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ID	Date	Author	Status	Type	Category	Location	Title	Text
464	Mon Feb 2 15:29:45 2026	Ronic Chiche	Under Process	info	lasers and optics	ThomX igloo	Laser Amplifier used at 70%	today, I installed a laser dump just before the telescope to avoid any high power (50W instead of 17W usually) issue in the injection
463	Mon Dec 8 11:17:17 2025	Ronic Chiche	Under Process	issue	lasers and optics \| detectors and electronics	ThomX igloo	High frequency noise	This morning, I installed a high-voltage probe (1:1000) on the AC-line to see if one could detect a correlation between lock losses
462	Wed Dec 3 16:23:40 2025	Ronic Chiche	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Noise issue	yesterday, in the same conditions, we had so many locking issues... exactly in the same way than before. :-(
461	Mon Dec 1 18:03:29 2025	Ronic Chiche	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Noise issue	since several days, we see that the locking is more and more unstable and the lock duration was sometime less than 20-30 seconds !
460	Tue Oct 28 17:31:47 2025	Ronic Chiche	Under Process	issue	lasers and optics \| detectors and electronics	ThomX igloo	High frequency noise	we did some tests with Marie to make some vibrations on the door. below, I exhibit some pictures of
459	Tue Oct 28 10:07:48 2025	Ronic Chiche	Under Process	issue	lasers and optics \| detectors and electronics	ThomX igloo	High frequency noise	After this observation, we did a test with Daniele to try to correlate the road traffic in front of the Igloo with the lock losses
458	Wed Oct 1 10:14:12 2025	Ronic Chiche	Under Process	issue	lasers and optics \| detectors and electronics	ThomX igloo	High frequency noise	At the end of the day, we found out what was the origin of this noise : some road renovation work with jackhammer and road
457	Tue Sep 30 15:17:30 2025	Ronic Chiche	Under Process	issue	lasers and optics \| detectors and electronics	ThomX igloo	High frequency noise	Today, the lock of the FPC was particularly bad (maybe the worst ever seen), with a lot of high frequency noise.
456	Mon Sep 29 10:22:32 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| vacuum \| detectors and electronics \| cabling \| software \| utilities	ThomX igloo	Power shut down on September 23th	This morning I did a phase alignment on the PDH signal generator (Rigol DG4102) this procedure ensure that both phases
455	Fri Sep 26 11:13:35 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| vacuum \| detectors and electronics \| cabling \| software \| utilities	ThomX igloo	Power shut down on September 23th	the 33MHz/500MHz RF frequencies from the Ring seems different from the previous state (maybe working at an energy of 50MeV instead
454	Fri Sep 26 11:08:21 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| vacuum \| detectors and electronics \| cabling \| software \| utilities	ThomX igloo	Power shut down on September 23th	this morning, I restarted all the equipments of the FPC. everything was fine after being
453	Thu Sep 18 18:29:04 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| vacuum \| detectors and electronics \| cabling \| software \| utilities	ThomX igloo	Power shut down on September 23th	to anticipate the power shut down on next tuesday 23/09, this afternoon, I switched off all
452	Tue Sep 16 17:41:28 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Accelerometer measurement	with Daniele, we placed the accelerometer on top of the fiber amplifier box which is inside the housing.
451	Tue Sep 16 12:32:52 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	polarization measurement of the FP cavity beam	today, with Daniele, we did a simple polarization measurement in transmission of the FP cavity beam.
450	Thu Aug 28 18:01:46 2025	Ronic Chiche	Fixed	info	detectors and electronics	ThomX igloo	Power shut down on August 29th	after alignment, CEP adjustment and optimizing the PDH phase, I got back ~92kW in the FPC for 33% amplifier ratio.
449	Wed Aug 27 12:01:41 2025	Ronic Chiche	Fixed	info	detectors and electronics	ThomX igloo	Power shut down on August 29th	This morning, all the equipments have been switched off due to a power shut down tomorrow morning.
448	Thu Aug 7 11:14:47 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Alignment correction during the summer break	I restarted the FPC system this morning. after some classic alignement procedure (some LEFT steps on the cavity injection
447	Fri Jul 18 15:56:40 2025	Ronic Chiche	Under Process	info	lasers and optics	ThomX igloo	laser operation again with machine OFF	The laser start at 33% with 92 KW optimized and P=0.03
446	Fri Jul 18 09:23:40 2025	Ronic Chiche	Under Process	info	lasers and optics	ThomX igloo	Xrays experiment with prostate	Today we do XRays for experiment. The laser start to 33% at 93 KW but Pgain = 0.033
445	Wed Jul 16 17:17:57 2025	Ronic Chiche	Under Process	info	lasers and optics	ThomX igloo	Suite tests stabilit�	We continue to find what gives high freq. perturbation. The laser starts at 92 KW it is
444	Tue Jul 15 17:34:13 2025	Ronic Chiche	Under Process	info	lasers and optics	ThomX igloo	Stability test Without and with	The laser starts at 93 KW. This morning I operated the laser locked with the RF for 1h30 without any delock.
443	Fri Jul 11 16:15:12 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Tuning of the slow feeback loop analog BW + fast feedback loop gain + PID	Today with Daniele, we tuned the potentiometer after the Laselock which drives the analog BW of the PID on the laser PZT,
442	Thu Jul 10 18:33:48 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	New recipies with additionnal attenuation before the diffuser and new x3 amplifier on laser PZT	With optical attenuation + x3 amplifier on laser PZT channel + feedback tuning Temporary recipie
441	Thu Jul 10 18:02:54 2025	Ronic Chiche	Fixed	info	detectors and electronics	ThomX igloo	laser PZT amplifier	this afternoon, I added the Gain = 2.8 amplifier at the output of the Laselock to drive the laser PZT.
440	Thu Jul 10 15:44:43 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	long run to test the appearance of high frequency noise	today, long run directly at full power (33% amplifier ratio) => 98kW in the FPC at the very begining of the run.
439	Wed Jul 9 18:11:59 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	long run to test the appearance of high frequency noise	Today with Daniele, we did 6 long runs at different power (23kW, 46kW, 66kW, 73kW, 92kW, 92kW)
438	Wed Jul 9 17:20:01 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	New recipies with additionnal attenuation before the diffuser	With optical attenuation only For ~ 92kW power in the
437	Wed Jul 9 16:27:18 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	optical attenuator added on the diffuser + new PID parameters	Today we did several long runs (~1h each) at ~23kW, 46kW, 66kW with different PID parameters which seems better.
436	Wed Jul 9 14:12:54 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Recipies for different FPC power	For ~ 66kW power in the FP-cavity:
435	Tue Jul 8 18:48:51 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	long run today at relatively nominal power (~90kW) with double loop (FPC + RF) between 13:30am and 6:30pm
434	Tue Jul 8 18:45:17 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	long run yesterday at relatively low power (~23kW) with double loop (FPC + RF) between 10am and 6pm
433	Tue Jul 1 17:31:41 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	We had a long run without any lock loss during ~1h with the 23kW recipie in the morning. during the afternoon, we had some
432	Tue Jul 1 12:13:18 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Recipies for different FPC power	For ~ 23kW power in the FP-cavity: Alplhanov amplifier ratio : 15%
431	Thu Jun 26 12:37:22 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Recipies for different FPC power	For ~ 46kW power in the FP-cavity: Alplhanov amplifier ratio : 20%
430	Wed Jun 25 18:48:28 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	New locking parameters (I got 98kW for 33% amp ratio) : Axis 18 position : +0009420
429	Wed Jun 25 09:57:56 2025	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| vacuum \| detectors and electronics	ThomX igloo	Possible causes for the noise in the FP-cavity system	4.3 - Vibrations of the mirror mounts due to temperature related to cavity power (the electrons machine is OFF)
428	Wed Jun 25 09:43:36 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New power record in ThomX cavity	yesterday, we were able to store more than 98kW in the FP cavity, always with the same parameter : 33% laser amplifier ratio
427	Wed Jun 11 18:59:34 2025	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| vacuum \| detectors and electronics	ThomX igloo	Possible causes for the noise in the FP-cavity system	list of possible causes of the high frequency noise which makes the system loosing the lock => to be checked.
426	Wed Jun 11 11:35:22 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	33MHz phase adjustment	the 33MHz beating signal (phase) is used to start and stop automatically the lock on the 500MHz beating signal.
425	Wed May 14 09:50:52 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	Today, I removed the NKT oscillator from the bunker to put it in the PLIC room. I locked the FP cavity and obtained
424	Tue May 6 10:58:18 2025	Ronic Chiche	Under Process	report	lasers and optics	ThomX igloo	air conditionning in ThomX Bunker	I finally got 93-94kW for 33% amp ratio. I had to move the FP-cavity length to compensate the temperature change in the
423	Tue May 6 09:29:43 2025	Ronic Chiche	Under Process	report	lasers and optics	ThomX igloo	air conditionning in ThomX Bunker	after the new temperature setting for the bunker air cooling (winter to summer transition), the temperature drop from 24° to 20°C
422	Fri May 2 10:05:43 2025	Ronic Chiche	Under Process	report	lasers and optics	ThomX igloo	air conditionning in ThomX Bunker	The temperature slitly increase in thomx Bunker from 23° to 24° during the last day.
421	Tue Apr 29 09:26:08 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	today, after 1 week of vacation, I was able to easily lock the cavity with 92kW with 33% amp ratio without too much optimizations
420	Mon Mar 31 18:19:30 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New power record in ThomX cavity	today, we were able to store more than 97kW in the FP cavity, always with the same parameter : 33% laser
419	Mon Mar 31 17:12:56 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	today, the alignment of FP cavity was so bad that I tuned the 01 mode by error (CEP and alignment)... insead of the 00
418	Tue Mar 18 11:45:21 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New power record in ThomX cavity	today, we were able to store more than 95kW in the FP cavity, always with the same parameter : 33% laser amplifier ratio
417	Tue Mar 18 11:25:07 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	this morning, the cavity was pretty misaligned => basic alignment in y direction helps a lot => 93kW for 33% amp ratio.
416	Wed Mar 5 15:08:38 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Electrons-Photons phase stability measurement	the phase between the 500Mhz ring RF oscillator and the electrons is measured on a BPM and is very stable after 2-3ms (<< 6ps,
415	Wed Mar 5 13:17:26 2025	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Electrons-Photons phase stability measurement	we installed a measurement at the IP with the BPM for ion cleaning for electrons and we used a fast photodiode at the output of
414	Tue Mar 4 14:54:31 2025	Ronic Chiche	Fixed	info	mechanics \| software	ThomX igloo	New direction for cavity motors	from now on, one reverts the FP cavity motors direction to compensate the long drift from the begining of the project.
413	Fri Feb 21 19:52:57 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics \| software	ThomX igloo	Good Xrays production trend	this afternoon, we succeeded to get a quite long Xray production trend around 15-20 minutes with a flux above 25k on i1.
412	Fri Feb 21 19:40:50 2025	Ronic Chiche	Fixed	issue	software	ThomX igloo	strange drift (new effect !?!)	today, we had a strange effect : both the laser and the FP cavity were locked on the RF frequency (500.10045 MHz),
411	Fri Feb 21 10:13:03 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	for this 20Hz oscillation, could it be a natural resonance of the optical table placed on its feet ?
410	Thu Feb 20 12:36:19 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New power record in ThomX cavity	today, we were able to store more than 94kW in the FP cavity, always with the same parameter : 33% laser
409	Wed Feb 19 10:35:06 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	I installed the accelerometer on the ground close to one feet of the FP cavity hexapod (see picture) and restarted the acquisition
408	Wed Feb 19 09:28:12 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	long term pk-pk measurement of the accelerometer (placed on the optical cavity table, on the marble part close to the laser oscillator)
407	Tue Feb 18 19:33:27 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	here is the same kind of measurement (pk-pk of 1 sec of acquisition) done on the laser PZT when the FP is at 90kW.
406	Tue Feb 18 17:36:25 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	here is the acquisition from 10:30am to 5:30pm 11k point in 7h => 1.57k points
405	Tue Feb 18 10:40:55 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	here is the pk-pk measurement of the accelerometer during the whole night. the recording started at 5pm yesterday
404	Mon Feb 17 17:37:27 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	one possible source for this acoustic noise was the vibrations coming from the water cooling of the dipoles which is normally
403	Mon Feb 17 12:12:02 2025	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New power record in ThomX cavity	today, we were able to store more than 93kW in the FP cavity, always with the same parameter : 33% laser amplifier ratio
402	Mon Feb 17 10:48:00 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	new plots, with the accelerometer placed directly on the optical cavity table (on the marble part), close to the oscillator.	7x
401	Mon Feb 17 09:52:21 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	this morning, I did some new plots with the accelerometer placed on the top of the case of the OneFive laser.	6x
400	Fri Feb 14 19:08:09 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	at the end of the day, I moved the accelerometer from the top of the cavity vessel to the top case of the Onefive laser.
399	Fri Feb 14 10:58:48 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	then, I moved the accelerometer on top of the "X-hutch side" vessel, placed directly on the metal top case, inside the	8x
398	Fri Feb 14 10:11:00 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	this morning, I did some measurement with nobody interfering with the tests. - the "no noise" image
397	Tue Feb 11 10:55:21 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	today I connected a copy of the laser PZT signal to the 2nd scope CH2 (with AC coupling to remove the DC offset) to be able to monitor
396	Fri Feb 7 15:35:37 2025	Ronic Chiche	Under Process	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	correlations between accelerometer and lock losses @ 20Hz	I installed an accelerometer setup in the bunker. presently, the accelerometer is placed
395	Thu Feb 6 10:29:36 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	this morning, I restarted the lock of the CFP after almost 2 weeks without operation. after quick alignment and CEP tuning,
394	Thu Jan 23 17:55:41 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	today we did x-rays => we got 41 000 pA at maximum and 90kW in the FPC for 33% amplifier ratio.
393	Wed Jan 22 15:32:53 2025	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| vacuum	ThomX igloo	correlations between vacuum gauges and lock losses @ 20Hz	the machine people saw a correlation between BPM jumps and vacuum gauges peaks related to breakdowns in the beam pipe.
392	Wed Jan 8 16:08:59 2025	Ronic Chiche	Under Process	info	lasers and optics \| detectors and electronics \| cabling	ThomX igloo	CEM noise measurements	This afternoon, we started almost all the parts of the machine with Vincent and Nicolas, and we didn't see any change in the Loop
391	Wed Jan 8 12:24:48 2025	Ronic Chiche	Under Process	info	lasers and optics \| detectors and electronics \| cabling	ThomX igloo	CEM noise measurements	The goal of these measurements is to check if one can find some correlation between the CFP lock losses observed during a run
390	Tue Jan 7 10:18:08 2025	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	this morning, I restarted the cavity after the Christmas shutdown. everything went fine.
389	Tue Dec 17 16:28:32 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	this morning, Kevin reduced the steering current in the IcePap controllers of the FP cavity motors.
388	Thu Dec 12 18:28:02 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	major result of the day: X-ray vertical scan by moving the hexapod abscise : hexapod position
387	Wed Dec 11 18:51:35 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	This morning, I added an amplifier on the 33MHz beating signal in between the mixer+LPF and the scope/Laselock.
386	Wed Dec 4 17:53:49 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	last thing we tried : we removed the threshold on the FPC/RF error signal.
385	Wed Dec 4 17:11:50 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	we observed that : - the MOT.03 motor always exhibits some perturbations on the transmitted, reflected
384	Wed Dec 4 12:26:03 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	today with Alice, we planned to do a long run with ~80kW in the FPC to check if the lock problems are coming from the interaction
383	Tue Nov 26 18:00:14 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	at the begining of the day, we started to get ~81kW in the FPC for 33% amplifier ratio and after ~1h, we got 84kW after CEP
382	Fri Nov 22 10:23:33 2024	Ronic Chiche	Under Process	report	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	day by day run for X-ray production	the RF frequency changed from 500.1003MHz to 500.0913MHz => it reduced by 9kHz @ 500MHz which is equivalent to 600Hz @ 33MHz
381	Wed Nov 20 18:55:37 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Checking the amplifier power	this afternoon, we put back the 1/4 and 1/2 waveplates and after a long alignment/angle tuning/CEP optimization process, we hardly
380	Wed Nov 20 12:42:11 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Checking the amplifier power	I put back and aligned the 1/2 waveplate only and I get 71kW max after its optimization and optimizing the CEP and alignment (without
379	Wed Nov 20 12:00:47 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Checking the amplifier power	we did a long term run (25 mn) with the powermeter located at the FPC position at 33% amplifier ratio.
378	Wed Nov 20 11:28:01 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Checking the amplifier power	this morning, with Daniele, we checked the amplifier power, right after the CVBG (the power meter has to be placed on a metal
377	Tue Nov 19 17:37:55 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	the RF frequency is now 500.1003MHz which is equivalent (if divided by 15) to 33.34002MHz. the frequency has to be changed
376	Fri Nov 8 15:23:11 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	this morning, I did some walking procedure and CEP alignment to get ~80kW in the FPC with 33% amplifier ratio.
375	Wed Oct 23 12:23:10 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	this morning, I did some walking procedure and I got 82kW in the FPC with 33% amplifier ratio (after CEP optimization too).
374	Tue Oct 22 18:58:56 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	Today, after setting the locking parameters, I got 80kW in the FPC for 33% amplifier ratio after CEP tuning (Smaract CH2 ~ -423.5µm)
373	Tue Oct 22 18:52:40 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Onefive 33MHz modelock loss	For the modulation/demodulation generator for the PDH signal, after a power shutdown, on can :
372	Mon Oct 21 09:20:47 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Onefive 33MHz modelock loss	After the new Yvette flooding of the last week and the consecutive AC-shut down, I restarted this morning the laser with the
371	Tue Oct 15 09:33:15 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Onefive 33MHz modelock loss	This morning, I verified the reason why the seeder frequency was not displayed on the amplifier software screen:
370	Mon Oct 14 10:21:17 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Onefive 33MHz modelock loss	On Friday 11th of October, due to the Yvette flooding, all the AC power of ThomX have been shut down.
369	Wed Oct 9 18:39:34 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	This afternoon, we scanned the optical table vertically with the hexapod in asynchronous mode to find its optimum position, looking
368	Wed Oct 9 09:56:21 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	This morning, I wanted to test quickly if the Smaract motors can be used in open loop instead of closed loop or in piezo scan.
367	Tue Oct 8 11:59:27 2024	Fatematuj Johora	Under Process	report	lasers and optics	Optical room	Characterizing Focus Tunable Lens	Yesterday Ronic and I worked on the high laser power measurements with the Vertical set-up of the Focus Tunable Lens. We went
366	Thu Oct 3 16:38:03 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	Today with Daniele and Alice, we operated to cavity. we obtained 84kW for 33% of amplifier
365	Tue Sep 17 13:04:32 2024	Ronic Chiche	Under Process	info	lasers and optics \| software	ThomX igloo	Optimizing lock parameters for stable X-ray production	here are the (good) lock parameters used this morning. for the RF/FPC lock, the 33MHz
364	Tue Sep 17 12:48:13 2024	Ronic Chiche	Fixed	info	mechanics	ThomX igloo	Finding correct motors position and parameters to keep the lock during a move	this morning with Daniele, we did a quite long run with this motor position and it seems we don't lose the lock too much.
363	Mon Sep 16 12:03:30 2024	Ronic Chiche	Fixed	info	mechanics	ThomX igloo	Finding correct motors position and parameters to keep the lock during a move	this morning, I try to find a new region for MOT.03 and MOT.06 where we can move them without unlocking
362	Mon Sep 9 11:00:43 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	this morning, with Vincent : - we added the 10Hz trigger to the CH2 on the remote scope (192.168.229.21)
361	Fri Sep 6 17:27:20 2024	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	20Hz oscillation in the locking between Laser and FP-cavity	could it be possible this 20Hz oscillations comes from anouncements in the bunker, puting the housing+table in vibration ?
360	Fri Sep 6 17:21:51 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	I changed a little bit the locking parameters (see picture) for the RF/FPC loop and it locked rapidely.
359	Fri Sep 6 15:20:20 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	now, the Ring RF frequency is set to 500.067MHz. so the CFP/laser frequency should be 500.067MHz/15 = 33.3378MHz.
358	Fri Sep 6 12:10:51 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	after redoing the alignment of the CVBG, we got back the initial power in the FPC (87kW)
357	Fri Sep 6 11:56:53 2024	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	ThomX igloo	fixing CVBG issue	this morning with Daniele, we realigned the amplifier beam axis on the iris position. it was pretty fast an easy => we
356	Thu Sep 5 09:53:10 2024	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	ThomX igloo	fixing CVBG issue	1) this morning, I aligned to CFP to get back 82kW in the cavity for 33% of amplifier ratio.	12x
355	Thu Sep 5 09:51:22 2024	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	ThomX igloo	fixing CVBG issue	the CVBG of the compressor module seems to have an issue. here is the plan of the work :
354	Fri Aug 30 17:59:01 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	amplifier power measurement before the compressor CVBG. we used a mirror in between the amplifier
353	Fri Aug 30 12:05:38 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	After the summer power shutdown, I restarted all the equipements and got quickly ~80kW for 33% amplifier ratio with CEP optimization
352	Fri Aug 30 10:50:45 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	this morning with Daniele, we are measuring the amplifier power just before the FP-cavity. Casemate temperature @19.5°C
351	Tue Aug 27 12:31:19 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	after doing some alignment (walking procedure on the Y axis), and CEP optimization, I got 83kW for 33% on the laser amplifier with
350	Tue Aug 27 11:33:24 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	we had to move the laser cavity motor to find the resonances and change a lot the CEP.
349	Tue Aug 27 10:19:08 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	I refilled the chiller and the stabilized temperature is @ 25°C we started the 3rd stage of the
348	Tue Aug 27 09:59:18 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	restarting CFP system after the long summer shutdown (RF section conditionning) and Alphanov amplifier issue	temperature in the casemate ~ 19.5°C stable this morning, I measured the power
347	Tue Jul 23 09:37:24 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	picture of the connectors used to carry signals between the amplifier pump module and the rack under the table.
346	Mon Jul 22 09:54:24 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	Guillaume and Julien Bour from Alphanov will come on wednesday 24/07 to have a first look and check the amplifier.
345	Wed Jun 19 09:14:14 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	the present situation is : Guillaume asked me to disconnect the "Laser head" cable from the
344	Wed Jun 19 09:07:56 2024	Ronic Chiche	Fixed	info	software	ThomX igloo	New password for login on the ThomX computer	the previous password has expired. the new access from the computer :
343	Thu Jun 6 09:17:02 2024	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	FYI : to access special menus on the Alphanov software, login : "Administrator"
342	Fri May 31 18:12:59 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	today with Daniele, we disconnected the EOM to increase the injected power of the amplifier, we were at 4.8mW but we still
341	Tue May 28 15:05:46 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	today, I tried to restart the amplifier at 0% (without 3rd stage) but it didn't start... still the same error message.
340	Tue May 14 10:37:41 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	the air temperature is between 21°C and 22°C. I tried to lock the cavity but
339	Tue May 14 09:20:27 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	Yesterday, the ThomX water circuit should have been repared, and yesterday aftenoon, Daniele restarted
338	Thu Apr 25 09:09:49 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	this morning, the chiller was in error and I had to restart it.
337	Thu Apr 11 09:58:10 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	this morning, the computer was restarted and I had to launch all the applications. no problem except the powermeter for
336	Tue Apr 9 09:38:18 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	this morning, I had to restart the chiller. Temp Amp 1 is at 27.5°C after having started the amplifier at 33% ratio.
335	Tue Apr 2 09:19:31 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	from now on, the transmission factor for calculating the FP intra cavity power is 1/1.75ppm ~ 570 000 (changed in the Powermeter
334	Tue Apr 2 08:51:21 2024	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New multiplication factor for the Fabry-Perot intra-cavity power	last week, we measured the transmission of a plan mirror from the same batch than the ThomX mirrors and we got ~ 1.75ppm instead
333	Tue Mar 26 10:20:54 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	This morning, I locked again the FP-cavity at more than 50kW with 33% of laser amplifier ratio.
332	Tue Mar 19 13:01:22 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	FP-cavity lock survey during the Linac section changing operation	This morning with Daniele, we operated the FP-cavity to be sure there is no issue due to the Linac section changing operation
331	Tue Mar 5 11:20:43 2024	Ronic Chiche	Fixed	info	software	ThomX igloo	correct parameters for locking the FP-cavity	this morning, I finished the FP-cavity alignment with the new ring RF frequency. I get back 50kW @ 33% amplifier ratio.
330	Mon Mar 4 18:32:21 2024	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser and FP cavities frequency adjustment	This afternoon, I did the 2nd half of the travel: dF @ 33MHz = 0Hz => the Smaract motor position is
329	Mon Mar 4 12:39:56 2024	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser and FP cavities frequency adjustment	at the beginning of the procedure, the frequency gap between the new Ring 33MHz frequency (33.3378MHz) and the laser/FP cavities
328	Mon Mar 4 09:32:06 2024	Ronic Chiche	Fixed	info	software	ThomX igloo	correct parameters for locking the FP-cavity	this morning I solved the problem of the 33MHz frequency beating which should be ~12kHz between the generator (at the new frequency
327	Fri Mar 1 18:38:17 2024	Ronic Chiche	Fixed	info	software	ThomX igloo	correct parameters for locking the FP-cavity	Today, we restarted the FP-cavity locking, after 3 weeks without using it. those 3 weeks have been used to set
326	Fri Feb 9 18:00:05 2024	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	20Hz oscillation in the locking between Laser and FP-cavity	measure to be done next week to check the 20Hz noise on the laser amplifier signal: - install a DET10 in reflection
325	Fri Feb 9 15:49:39 2024	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	20Hz oscillation in the locking between Laser and FP-cavity	what does this 10ps phase jitter mean in term of cavity length variations ? L = L0 + dL sin(2pi fm t) = L0
324	Fri Feb 9 09:50:45 2024	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	20Hz oscillation in the locking between Laser and FP-cavity	yesterday I did 2 tests to try to understand the origin of the 20Hz oscillation which is dominant in the remaining 10-20ps rms
323	Wed Feb 7 18:33:42 2024	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	This morning with Daniele, we changed the laser/RF locking scheme : 1) we use the laser 33MHz internal
322	Fri Feb 2 11:53:40 2024	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser cavity temperature/pressure sensitivity	this morning, I did a 500MHz beating frequency (Laser vs RF) drift test with the Smaract motors configured with "Sensor Mode"
321	Thu Feb 1 17:23:23 2024	Ronic Chiche	Fixed	info	detectors and electronics	ThomX igloo	locking	during the last days we changed the FP-cavity - RF reference locking system to force the right bucket:
320	Fri Jan 26 13:04:56 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	33MHz (FP-cavity vs RF) phase stability	today, I locked the laser on the FP-cavity and the FP-cavity on the RF reference with 47kW inside the FP-cavity.
319	Fri Jan 26 11:05:27 2024	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| cabling	ThomX igloo	controller M1 & M4 (plan mirrors) with IcePap controllers	at the begining of each session, it will be mandatory to avoid any backlash for the motors :
318	Thu Jan 25 13:36:35 2024	Ronic Chiche	Fixed	info	detectors and electronics	ThomX igloo	First stable X-rays production	this morning, we locked the laser on the FP-cavity with about 48-49kW stable in the FP-cavity (for 32% of amplifier ratio).
317	Thu Jan 25 12:45:41 2024	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| cabling	ThomX igloo	controller M1 & M4 (plan mirrors) with IcePap controllers	this double motors scheme works good. if motor P4 is used by increasing value, the FP-cavityPZT signal (pink signal
316	Thu Jan 25 10:15:28 2024	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| cabling	ThomX igloo	controller M1 & M4 (plan mirrors) with IcePap controllers	previously, we have connected motor M4 with an IcePap controller. see this post : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/278
315	Fri Jan 19 18:05:42 2024	Ronic Chiche	Fixed	info	detectors and electronics	ThomX igloo	Adding one photodiode in reflection	this morning, I added a DET36 photodiode in reflection (I used a thin beam splitter) to better measure the coupling over the full
314	Tue Jan 16 12:26:12 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	33MHz (FP-cavity vs RF) phase stability	this morning, with Vincent Chaumat, we made a beating (phase detection) between the laser 33MHz and the 33MHz coming from
313	Tue Jan 16 12:19:35 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	Restarting equipements after Christmas shutdown	on last friday (12/01/2024), the IcePap DS issue was solved and I was able to control the FP-cavity motors properly.
312	Thu Jan 11 13:42:16 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	Restarting equipements after Christmas shutdown	this morning, I set the Ring frequency at 500.25MHz and after switching ON the power supply of the amplifiers for the RF signal
311	Wed Jan 10 18:43:03 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	Restarting equipements after Christmas shutdown	the laser coupled into the amplifier is still measured at ~3mW at the input, on the Alphanov software, once the Amp stage are
310	Wed Jan 10 15:21:46 2024	Ronic Chiche	Under Process	info	lasers and optics	ThomX igloo	Variable focal lens validation	we plan to use Electrically Tunable Lenses EL-10-30-C NIR to build the ThomX telescope but they need to be compatible with the powerful
309	Wed Jan 10 14:52:22 2024	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	Restarting equipements after Christmas shutdown	this morning, I plugged back the 4 power cables which supply all the equipments. all the equipments have restarted
308	Fri Dec 22 16:13:27 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	Christmas shutdown	this afternoon, I checked visually what happens when the AC power of the UPS is broken down => the laser controller has still
307	Fri Dec 22 09:46:18 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics \| software	ThomX igloo	Christmas shutdown	this morning, I shut off all the equipements (especially the computer) except the ones powered by the UPS : laser controller, laser
306	Mon Dec 11 17:21:32 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	today with Fatematuj, we did a long-term frequency drift measurement between the FP-cavity loaded with 50kW and the RF reference frequency...
305	Fri Dec 8 12:21:25 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	today, the Alphanov amplifier stopped because of the too low injected power : ~2.5mW (measured by the Alphanov software)
304	Thu Dec 7 14:59:02 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	on last tuesday, I did a long-term measurement of the frequency drift when the heating cable is powered ON at 20V (2x 10V) @ t=0mn.
303	Thu Dec 7 09:09:27 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	New mirrors batch informations	the 2 files describe the specfications for the16 mirrors ordered (4 for ThomX + spare, 4 for SBOX + spare) and the measurements
302	Mon Dec 4 10:45:50 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	last friday, I locked the cavity and then, switched ON the heating cable after waiting the cavity reaches a steady state in frequency
301	Thu Nov 30 15:53:10 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	this afternoon, I started the heating cable after the warm-up of the FP-cavity : 14h20 : start to fill 50kW
300	Thu Nov 30 12:33:08 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	FP-cavity inside power sensitivity	this morning I monitored the frequency shift between the FP-cavity frequency (the laser is locked on it) and the RF reference
299	Wed Nov 29 16:39:16 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Long term lock of Laser-FP cavity-RF reference	this afternoon, we did a new long-term "double lock" run w/o any single lock loss during 1/2h.
298	Wed Nov 29 12:33:33 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Long term lock of Laser-FP cavity-RF reference	today, I did a 20 minutes "double lock" run w/o any single lock loss. the attached file shows the recorded
297	Wed Nov 29 12:20:18 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	today, I removed one of the DC voltage supply (as with 30V, we are already able to 30°C on the heating cable).
296	Wed Nov 29 09:35:10 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser cavity temperature/pressure sensitivity	long-term correlation, over 5-6 days, between the temperature measured in the bunker, outside of the housing (blue curve) and the temperature
295	Tue Nov 28 19:01:19 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Long term lock of Laser-FP cavity-RF reference	today for the first time, we were able to make a long term lock of all the elements (Laser on FP cavity and FP-cavity on RF reference)
294	Tue Nov 28 18:38:16 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	several days ago, we installed a heating cable around the output flange (close to the X-hutch) of the FP-cavity vessel.
293	Tue Nov 28 11:32:17 2023	Ronic Chiche	Fixed	info	mechanics \| detectors and electronics	ThomX igloo	Smaract motors parameters and controller	current Smaract motors parameters : - Closed loop Max frequency : 5000 - Signal Amplitude threshold : 2047
292	Tue Nov 28 10:24:47 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser cavity temperature/pressure sensitivity	today, I swapped the 500MHz RF reference oscillator for a Siglent 500MHz DDS oscillator. see the attached plot : the
291	Fri Nov 24 18:47:25 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser cavity temperature/pressure sensitivity	the last thing we did with Daniele, is to start/stop the airflow on top of the housing (closed) to see a possible pressure effect
290	Fri Nov 24 18:16:37 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser cavity temperature/pressure sensitivity	Now, I placed a temperature probe stuck on the laser housing itself. fig. 1
289	Fri Nov 24 12:56:39 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics	ThomX igloo	Laser cavity temperature/pressure sensitivity	laser cavity : when one decreases the laser motor position, the laser repetition rate
288	Thu Nov 23 12:26:26 2023	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Temperature control of the Laser length with the inside Peltier	bunker temperature @ 22.5°C today, Sebastien Pitrel improved
287	Thu Nov 23 12:25:07 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Temperature control of the FP-cavity length	as the CFP motors displacements induce a cavity unlock, we try to change the cavity length by changing the temperature of elment
285	Fri Nov 17 11:44:35 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Laser / FP-cavity "day by day" locking	temperature @ 21.9°C 48.5kW inside CFP for 30% amplifier ratio
284	Thu Nov 16 17:48:29 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Laser / FP-cavity "day by day" locking	temperature @ 22.3°C today, all the PC applications were closed except the web browser.
283	Wed Nov 15 09:36:35 2023	Ronic Chiche	Fixed	report	detectors and electronics	ThomX igloo	bunker temperature curve
282	Tue Nov 14 11:33:45 2023	Ronic Chiche	Fixed	report	mechanics \| lasers and optics	ThomX igloo	M4 motor using icepap controller and jive/Atkpanel IHM	one problem is the FP-cavity/laser lock loss when one moves a FP-cavity motor. with acceleration = 0.01 units/s²
281	Tue Nov 14 10:51:57 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Ring frequency / Laser "day by day" locking	temperature stable around 21.7°C today, the equivalent Smaract position corresponding to the 500.25MHz ring frequency
280	Tue Nov 14 10:35:16 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Laser / FP-cavity "day by day" locking	temperature since we moved to temperature probe (jump at the beginning of the plot) below the ring on a metallic base.
279	Fri Nov 10 12:37:42 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Laser / FP-cavity "day by day" locking	as the temperature is back to a normal value ~ 20.8°C, the injected power to the amplifier (PD_IN in the Alphanov software)
278	Fri Nov 10 09:51:22 2023	Ronic Chiche	Fixed	report	mechanics \| lasers and optics	ThomX igloo	M4 motor using icepap controller and jive/Atkpanel IHM	Kevin moved the M4 mirror controller from the ISP controller to some ICEPAP controller. the IHM to access this ICEPAP controller
277	Fri Nov 10 09:43:26 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Ring frequency / Laser "day by day" locking	temperature stable around 20.8°C today, the equivalent Smaract position corresponding to the 500.25MHz ring frequency
276	Thu Nov 9 17:02:26 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Laser / FP-cavity "day by day" locking	today, we locked the FP cavity at ~50kW with 30% laser amplifier ratio (16W) during almost all the day (from 10am to 4pm)
275	Thu Nov 9 16:40:16 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Ring frequency / Laser "day by day" locking	today, the equivalent Smaract position corresponding to the 500.25MHz ring frequency is +156µm on MCS-1/ch0 (closed loop
274	Wed Nov 8 18:52:44 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	some changes in the feedback scheme	from several weeks, the maximum power stored in the FP-cavity was ~ 5kW. today with Daniele, we finished
273	Wed Nov 8 17:51:30 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics	ThomX igloo	!!! strange amplifier beam pointing fluctuations !!!	we confirmed the effect of the bunker temperature on the laser amplifier "beam pointing" fluctuations.
272	Tue Nov 7 14:09:25 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	Today, the power measured at the input of the amplifier (PD_IN on the LAL amplifier software) is 2.5mW instead of >3mW generally
271	Mon Oct 9 13:11:23 2023	Daniele Nutarelli	Fixed	info	lasers and optics	ThomX igloo	Tests of pointing stability of the laser CFP	Last monday with Victor we have cheked the stability of de pointing of the laser FP.
270	Fri Sep 22 11:30:28 2023	Daniele Nutarelli	Fixed	report	lasers and optics	Optical room	Laser FP operation	This morning FP Laser was operating well locked at 30 KWatts in stable vay. There are some fluctuations due
269	Thu Sep 21 18:56:56 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics	ThomX igloo	!!! strange amplifier beam pointing fluctuations !!!	this morning, I locked the cavity to ~25kW without any problem. but this afternoon, the reflected
268	Wed Sep 20 19:17:44 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	after a sudden FP-cavity Finesse increase, we had to install the Fast Feedback Loop in order to continue to lock the cavity.
267	Wed Sep 20 19:12:16 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Fast feedback loop between laser and FP cavity	I copy the post about Fast Feedback loop : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/265 This morning,
266	Wed Sep 20 19:10:16 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	!!! strange FP cavity behavior => impossible to lock !!!	this afternoon, in adjusting the CEP and improving the parameters of the lock, I was able to get ~ 47kW stable inside the cavity,
265	Wed Sep 20 14:16:09 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	!!! strange FP cavity behavior => impossible to lock !!!	This morning, - I installed the fast feedback loop.
264	Mon Sep 18 17:12:07 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	!!! strange FP cavity behavior => impossible to lock !!!	it could be also an optical unstability, as when the intra-cavity power increases, the radius of curvatures of the mirrors increases
263	Mon Sep 18 12:48:39 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	!!! strange FP cavity behavior => impossible to lock !!!	this morning, we tried: - to move a bit the arm of the L-shape off the beam axis (in case of it
262	Fri Sep 15 19:13:44 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	drift calculation for the SMA100A	the goal is to estimate what could be the frequency drift at 500MHz for the SMA100A: see phase noise datasheet in attachement
261	Fri Sep 15 18:56:36 2023	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	!!! strange FP cavity behavior => impossible to lock !!!	suddenly, BEFORE switching the HV amplifier ON and BEFORE connecting it to the EOM (in order to explore the HV effect on the EOM
260	Fri Sep 15 18:27:24 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Fast feedback loop between laser and FP cavity	this afternoon, we tried to better understand how to drive properly the EOM to kill high frequency noise.
259	Fri Sep 15 18:11:07 2023	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	20Hz oscillation in the locking between Laser and FP-cavity	this afternoon, we did 2 tests to better understand this 20Hz oscillation: - we locked the amplified laser
258	Fri Sep 15 18:00:41 2023	Ronic Chiche	Under Process	issue	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	20Hz oscillation in the locking between Laser and FP-cavity	this morning, we tried to find the origin of the 20Hz oscillation. - we switched OFF the laser Smaract
257	Thu Sep 14 19:16:44 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	this afternoon, we were able to lock the laser on the FP-cavity and the FP-cavity on the Ring reference oscillator in a same
256	Wed Sep 13 18:33:50 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	this afternoon, I firstly connected the HV output of the Laselock to the FP-cavity PZT : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/248
248	Wed Sep 13 17:57:08 2023	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	ThomX igloo	work with HV voltage on the Laselock	This afternoon, I connected the HV output of the Laselock (instead of the standard 0-10V output) to the FP-cavity PZT to increase
255	Wed Sep 13 12:24:14 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	this morning, I added a Thorlabs lowpass filter at 1kHz after the mixer and a resistor at the Laselock output to the FP-cavity PZT.
254	Tue Sep 12 17:58:41 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	this afternoon, I tried to lock the FP-cavity on a local 500MHz synthesizer as a frequency reference
245	Tue Sep 12 14:28:36 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Removing high order modes	yesterday with Daniele, we tried again to move the arm horizontally and vertically from the "zero position" to have
244	Fri Sep 8 19:45:56 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	redoing the PDH error signal scheme with discrete components is more flexible and it is easier to check the signal/noise ratio.
253	Fri Sep 8 19:35:36 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	this afternoon, I installed the frequency detection scheme in the bunker : - I changed the large reflected
242	Fri Sep 8 18:22:21 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Removing high order modes	here is the picture of the L-shape arm and the inside of the vessel. this image corresponds to the "zero"
241	Fri Sep 8 12:43:04 2023	Ronic Chiche	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Removing high order modes	this morning we locked the laser and the FP-cavity with ~ 40kW => some HOM appeared "randomly" depending on the power.
240	Thu Sep 7 19:23:36 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Fast feedback loop between laser and FP cavity	today, after the several unsuccessful attempt yesterday to get an improvement in the lock, we decided to "rebuild"
239	Thu Sep 7 18:51:43 2023	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Onefive laser modelock and Smaract CEP controller	today, during an attempt in improving the CEP with the Smaract controller CH2, we lost the laser modelock.
238	Wed Sep 6 20:09:56 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Smaract controller remplacement	previously, we were using a spare Smaract MCS controller to drive the Onefive linear stages (without -LV -low vibration-
237	Wed Sep 6 19:57:48 2023	Ronic Chiche	Fixed	info	lasers and optics \| detectors and electronics	ThomX igloo	Fast feedback loop between laser and FP cavity	today, we tried to lock the FP cavity with the Smaract motors ON (with option -LV). we know the Smaract controllers produce
236	Tue Sep 5 18:21:12 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	FP-cavity FSR shift	today, to match the ring frequency at 500.25MHz (15th laser harmonic), we did a frequency shift on the laser using the Smaract motors
235	Tue Sep 5 18:08:39 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Equipments shutdown	on the August 30rd and 31th, a global power shutdown was forseen for ThomX. to prevent damage on equipments,
234	Tue Sep 5 17:59:24 2023	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	ThomX igloo	work with HV voltage on the Laselock	Yesterday, I checked the 2 output HV channels of the LaseLock : they work properly but the noise is bigger than the low voltage
233	Wed Aug 2 13:13:52 2023	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	ThomX igloo	work with HV voltage on the Laselock	presently, the voltage on the laser PZT is 0-10V, but during the several runs we did, this voltage is too low to compensate
232	Wed Aug 2 13:07:59 2023	Ronic Chiche	Not Fixed	issue	detectors and electronics	ThomX igloo	ThomX ring injection kicker noise => USB communication issue with Alphanov amplifier	several times already, when the electrons ring injection kicker is running @10Hz, we observed peaks at the same frequency on reflected
252	Wed Aug 2 11:38:20 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	Today, I connected the BNC-DB9 female prolongator cable to the FP-cavity PZT cable (DB9-DB9) and to the channel B of the Laselock.
251	Mon Jul 31 19:17:40 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	Today, I installed a DB9-DB9 female-male cable on the PZT connector of the FP-cavity. the PZT is connected between pins
250	Fri Jul 28 13:19:22 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	régler le problème 1: Kevin m'a apporté un déphaseur
249	Thu Jul 27 18:47:57 2023	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	lock oscillateur 33MHz - synth� 500MHz	pour préparer le lock cavité-anneau, j'ai un setup de lock en salle optique entre le laser OneFive 133MHz et un synthé
227	Wed Jul 26 14:49:41 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	Today, we locked the cavity with input power @ 30% for the amp => we got 40kW with only 30% of coupling (and a bad lock
226	Wed Jun 28 19:07:42 2023	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Incoming laser beam power issue	today, we observed on the photodiode used in reflexion of the cavity, that its voltage level stops increasing after 50% of power
225	Wed Jun 28 19:01:03 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	First X rays and FP-cavity mode and electron beam waists size @ IP	on friday 23/06 afternoon, after scanning the hexapod z-axis, we observed a cut of the power stored in the FP-cavity (with constant
224	Thu Jun 22 20:20:03 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	we checked yesterday morning the real input power @ 30% for the amp => it is 16W in agreement with the previously measured values
223	Tue Jun 20 19:08:17 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	I checked with the Matlab code below the CEP detuning effect (2nm sech² spectrum... not exactly the same as in ThomX)
222	Tue Jun 20 18:45:10 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	this morning, I tested the laser+amplifier @ 30% lock on the FP cavity with and without Smaract motors.
221	Mon Jun 19 16:08:15 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics \| cabling \| software	ThomX igloo	Cavity Lock - Alphanov Amplifier	The computer is possible to connect from the control room, we are able to run remotely the
220	Fri Jun 9 19:51:43 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics \| cabling \| software	ThomX igloo	Cavity Lock - Alphanov Amplifier	In the morning, we locked on the first resonance. With an increase on the amplifier power @ 20-25% and 30%, which reduced the
219	Thu Jun 8 11:12:20 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	After removing the 2 generators from the optical table, the lock is much more stable and now, it is possible to lock on the main
218	Wed Jun 7 21:46:50 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics \| cabling \| software	ThomX igloo	Cavity Lock - Alphanov Amplifier	Today with Ronic, starting with major events that happened (Water circulation + ThomX valves
217	Tue Jun 6 15:52:59 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	today with Daniele, we locked easily (but with a noisy lock) on the secundary resonance and we tried to lock on the main resonance
216	Tue Jun 6 01:12:11 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics \| cabling \| software	ThomX igloo	Cavity Lock - Alphanov Amplifier	Today, I installed a power meter at the transmission point of the 1st spherical mirror , transmission 3 ppm (direct from cavity
215	Fri Jun 2 10:54:25 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics \| cabling \| software	ThomX igloo	Cavity Lock - Alphanov Amplifier	Yesterday, with Ronic we locked ThomX cavity on the second resonance Laser : 33.36 MHz , Amplifier :	13x
214	Thu Jun 1 18:15:04 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	finding the right modulation/demodulation PDH phase is very difficult on the main resonance because the we get non stationnary signals
213	Thu Jun 1 10:31:45 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	33MHz oscillator + Alphanov amplifier lock	the last tries to lock the 33MHz + amplifier to the 30k Finesse FP-cavity were unsuccessful. during a laser Frep scan using
212	Tue May 30 18:32:37 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics \| cabling \| software	ThomX igloo	Cavity Lock - Alphanov Amplifier	This morning, while trying Guillaume solution of disconnecting the 24 V necessary to the second and third stage and raise the threshold
211	Mon May 22 16:07:12 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	PW laser Injection into cavity	Today with Ronic and Daniele we attempted to lock the cavity, but the alphanov amplifier did not turn on because of an error in MMD3
210	Wed Apr 19 16:41:46 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	PW laser Injection into cavity	Added Note: the coupling we get is at low power, only preamplifier is on (~ 300 mW) was done at the end due to excitation
209	Wed Apr 19 16:39:28 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	PW laser Injection into cavity	On Monday with Daniele, we did full characterization of amplifier beam @ 10% amplification, adjusted the telescope
208	Thu Apr 13 17:48:49 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	PW laser Injection into cavity	Yesterday, we installed the second high power reflecting mirrors at the output
207	Tue Apr 11 16:58:16 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP Finesse measurement using CW	This morning, with Ronic and Daniele, we locked the cavity again (The lock was relatively easy and stable during the reading of the
206	Fri Apr 7 15:56:40 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	CW FP Cavit lock	This morning with Daniele and Viktor, - we confirmed the "potato" mode was well centered on the injected beam
205	Fri Apr 7 00:26:11 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	CW FP Cavit lock	Yesterday morning we locked the cavity on a strange mode in the cavity (we call it mode, but not sure what it is ??)
204	Tue Apr 4 13:03:23 2023	Manar Amer	Fixed	report	lasers and optics \| vacuum \| detectors and electronics	ThomX igloo	Cavity Alighnment	Today, we prepared lenses for a telescope for the CW laser injection into the cavity, yet to be installed
203	Tue Mar 28 13:56:52 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Cavity Alighnment	Last week, with Ronic and Victor we aligned the cavity using CW laser (Koheras) we have also installed	9x
202	Mon Mar 20 17:55:25 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	due to several "case temperature" issues, I change the "Max case temperature" in the "general config" of the
201	Mon Mar 20 17:39:28 2023	Ronic Chiche	Fixed	info	utilities	ThomX igloo	Power shut down on Saturday the 18th	Today, I restarted all the equipements : Chiller
200	Mon Mar 20 17:23:09 2023	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	As the general local network for the FP-cavity devices is 192.168.xxx.xxx, I changed the IP adress of the smaract laser motors (Frep
199	Mon Mar 20 09:33:54 2023	Ronic Chiche	Fixed	info	utilities	ThomX igloo	Power shut down on Saturday the 18th	All the equipments have been switched off on Friday 17th due to a power shut down on Saturday 18th :
198	Fri Mar 17 18:54:19 2023	Manar Amer	Fixed	report	lasers and optics	Optical room	New Mirrors from LMA _ Images	Today we tested a mirror from one patch image is for the front face of the mirror
197	Wed Mar 15 21:14:51 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Amplifier Beam Profile over time	Information about today's work is added to logBook !!
196	Wed Mar 15 21:13:07 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Amplifier Beam Profile over time	This morning we took data of the beam profile at 4 different points to see the evolution of	10x
195	Tue Mar 14 16:54:48 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Amplifier Beam Profile over time	This morning, with Ronic, we opened the compressor box to observe if there is any misalignment of the mounts or the CVBG's
194	Mon Mar 13 16:10:24 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	We took reading of the beam profile of the amplifier without a lens @ 30 cm from the 2nd wedge for amplification percentages
193	Mon Mar 13 14:02:59 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	CW laser installation and cleaning	This morning with Ronic , in preparation for the mirror installation, we removed additional mechanics and cables from the table.
192	Wed Mar 8 15:11:49 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	CW laser installation and cleaning	This morning with Manar, in order to prepare the installation of the news FP cavity mirrors, - we installed the Koheras below
191	Wed Mar 8 14:49:12 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	this morning with Manar, we checked the Alphanov amplifier issue : "The laser has been stopped
190	Mon Feb 27 18:23:13 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	This morning with Victor we took a reading of the beam profile using a 400 mm lens at 70 % and 100 % amplification.
189	Thu Feb 23 10:15:30 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	Yesterday, Guillaume Machinet and Vincent Clet from Alphanov came to fixe some issues with the
188	Wed Feb 22 16:11:32 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	On Monday 20th of February, Daniele and Viktor took some beam profile measurement data @ 50% of power amplification.
187	Tue Feb 14 12:53:09 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	This morning with Daniele, we did a second measurement of the beam profile using a different lens of focal 400 mm.
186	Fri Feb 10 09:54:46 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	This morning, - with the "Alphanov" software => Central panel => "system"
185	Wed Feb 8 14:09:50 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	With Daniele after, we took a readings of the beam with a lens of 750 mm. From the observed data, we can
184	Wed Feb 8 11:25:50 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	we have had this new issue (watchdog alarm switching off the amplifier) for several days.
183	Mon Jan 30 17:40:10 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Alphanov amplifier beam profile Data	This Morning with Victor the amplifier was turned on @ 20% amplification (output ~ 9 W ) for approximately 3 hours and no
182	Mon Jan 30 17:28:33 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	the laser amplifier worked for some days but it ended to a "watchdog" alarm which switches off the amplifier... investigation
181	Mon Jan 30 17:28:00 2023	Ronic Chiche	Fixed	report	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	Ronic on Friday operated the Amplifier from the Alphanov software, switched it off then turned on the LAL software,
180	Wed Jan 11 17:38:13 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Alphanov amplifier beam profile measurement	this morning with Manar, - we fixed the chiller problem (+/-2°C fluctuation around the set temperature
179	Wed Jan 11 17:31:00 2023	Ronic Chiche	Fixed	info	lasers and optics \| software	ThomX igloo	Alphanov amplifier beam profile measurement	Today with Ronic For
178	Mon Jan 9 14:03:16 2023	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Alphanov amplifier beam profile Data	Adding the schematic of the measurements., the 4° Beam Deviation, AR Coating ( B coating)	8x
177	Mon Jan 9 12:11:14 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Alphanov amplifier beam profile measurement	this morning with Manar, - we checked first the chiller problem.
176	Thu Jan 5 09:58:50 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Alphanov amplifier beam profile measurement	yesterday morning with Manar, 1) we fixed the threshold level of the laser input signal which makes the
175	Mon Jan 2 15:21:09 2023	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Alphanov amplifier beam profile measurement	today with Manar, we brought everything to make the profile measurement. the chiller was in error
174	Thu Dec 15 11:41:36 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	Yesterday, we received the controller back from Alphanov and I tested it immediately in the
173	Tue Dec 6 11:47:36 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	Today, I did a Teams meeting with Guillaume. He didn't see any problem with the controller.
172	Thu Dec 1 13:51:05 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	The laser amplifier controller has been sent yesterday and received today by Alphannov. they should do the assessment quickly...
171	Wed Nov 9 14:49:52 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	I just tested the fuse inside the black ON/OFF switch on the rear panel => it is OK ! :-(
170	Wed Nov 9 13:03:50 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier issue	on Monday morning 7/11, we tried to restart the Alphanov amplifier which was not turned on since end of april 2022, but it didn't
169	Wed Nov 9 11:34:54 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	Monday 7/11 morning, the power in the fiber was still 6.2 mW
168	Thu Nov 3 09:09:18 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	this morning : still 6.2 mW at the output of the fiber. the powermeter has been removed
167	Wed Nov 2 11:42:43 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	This morning with Manar, we continued the strecher CVBG alignment and fiber injection procedure :
166	Mon Oct 24 17:35:01 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	Manar + Victor, today in the morning we aligned the CVBG of the stretcher. The double path using the mirror
165	Thu Oct 20 15:01:02 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	I used the 33MHz spectrum measurement : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/153 fitted by P=P0*sech²((f-f0)/df)
164	Wed Oct 19 15:01:32 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	This morning with Ronic, using a pickup mirror, we measured the power in different locations along the path of the stretcher
163	Wed Oct 19 14:57:43 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	This morning with Manar, we measured the power at different points: - direct measurement at the output
162	Tue Oct 18 17:51:12 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	In preparation for tomorrow morning, I did a test with a 45° mount to have a power pickup inside the injection box.
161	Mon Oct 17 13:58:08 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	This morning with Viktor, we started the alignment of the CVBG and fiber. we did a better alignment of the
160	Thu Oct 13 12:26:07 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Strecher and fiber injection alignment	Today, after laser was modelocked, we checked the power inside the fiber coming from the Alphanov Strecher box.
159	Thu Oct 13 12:19:11 2022	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	Today, we succeded to make the laser modelock. the ouptut power is above 35mW (the powermeter was saturated)
158	Thu Oct 13 12:12:49 2022	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	Yesterday, we put back the 33MHz oscillator into the casemate with the new Smaract controller. after switching ON the laser controller,
157	Fri Oct 7 17:47:39 2022	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	Today, we used an "ELI-NP" Smaract controller made with these 2 references : MCS-3CC-ETH-TAB (SN 2271) => main
156	Wed Oct 5 15:51:26 2022	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	Yesterday with Aurélien, we try to make the laser modelock using the Smaract translation stages embedded inside the laser
155	Mon Oct 3 18:54:58 2022	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	This morning, with Aurélien and Daniele, we did the swap between the 33MHz and 133MHz oscillators.
154	Tue Aug 30 18:31:49 2022	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Amplifier output power	We checked the Dichroic mirror we have : it is a DMSP1000 shortpass dichroic mirror as specified in this post.
153	Tue Jul 12 15:55:20 2022	Ronic Chiche	Fixed	info	lasers and optics	Optical room	33MHz laser SN2439 back to Orsay	On the 8th of July, the SN2439 33MHz laser was returned from NKT to our lab, being repaired. it stayed all the weekend to warm
152	Wed Jun 15 15:18:57 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	mirrors removing	This morning with Viktor, we opened the 2 vessels and removed the 4 FP-cavity mirrors. all the mirrors have been put in
151	Tue Jun 14 10:43:07 2022	Ronic Chiche	Fixed	info	vacuum	ThomX igloo	Vessels vacuum at ambiant pressure	Last Friday and this morning, with Bruno, we close the ring/cavity valves and put some dry air in the two vessels through a filter
150	Tue Apr 26 11:15:23 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier compressor's CVBG thermal images	last Friday with Manar, we took some thermal images of the Alpnavov compressor box. I post a small document to summarize
149	Tue Apr 26 11:12:58 2022	Ronic Chiche	Fixed	issue	lasers and optics	ThomX igloo	Alphanov amplifier compressor's CVBG thermal images	last Friday with Manar, we took some thermal images of the Alpnavov compressor box. I post a small document to summarize
148	Tue Apr 19 12:15:43 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	For better comparison , the measurements done previously with 2 CVBGs was done at ~ 30 cm and the	8x
147	Fri Apr 15 19:00:20 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Victor, Ronic, Manar Today was dedicated to the study of the CVBG, and it's effect on	20x
146	Fri Apr 8 19:25:16 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Pulse Duration	Pulse Duration FWHM = 12.9 ps
145	Fri Apr 8 19:24:32 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Pulse Duration	Measurement of the pulse was done at the end of the afternoon, Pulse Duration FWHM = 12.9 ps
144	Fri Apr 8 13:34:54 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Pulse Duration	The pulse duration from the amplifier compressor output will be measured using PulseCheck autocorelator
143	Fri Apr 8 13:15:18 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	First hands on the Alphanov amplifier & software	Software Works well and is operational. Just closing the log series!!!
142	Fri Apr 8 13:12:34 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	This Morning, another reading was taken for the output of the amplifier after the compressor using 2 wedge mirrors.	12x
141	Mon Apr 4 14:23:14 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Adding the readings 20% , 30% , 40% for output of amplifier after the compressor	6x
140	Sat Apr 2 00:51:07 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Readings of the beam shape and fit at the output of the compressor differance from
139	Sat Apr 2 00:45:25 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Readings of the beam shape and horizontal (upper plot) and vertical (lower plot) axis fit at the direct output of the amplifier.	9x
138	Fri Apr 1 23:59:51 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Today a second reading of the beam profile was done , with Victor ,Ronic, Aurlien and Manar
137	Wed Mar 23 13:55:11 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Adding the fitted beam in 1D in Horizontal and vertical axis. for 10% to 60%	6x
136	Tue Mar 22 21:20:28 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile
135	Tue Mar 22 21:19:48 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Alphanov amplifier Beam Profile	Today: Manar, Ronic and Aurlien started the study of the beam profile of the alphanov amplifier at high power.	8x
134	Fri Mar 18 15:04:30 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Alphanov amplifier power measurement	answers from Guillaume: - the chiller temperature has to be set to 25°C
133	Fri Mar 18 11:48:14 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	Alphanov amplifier power measurement	This morning, with Manar and Aurélien, we measure the power directly at the output of the Alphanov amplifier with
132	Mon Mar 14 18:39:40 2022	Manar Amer	Fixed	info	mechanics \| lasers and optics \| detectors and electronics	ThomX igloo	Current Installed Setup	Attached is the current setup in ThomX
131	Fri Mar 11 17:58:24 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	First hands on the Alphanov amplifier & software	Additional information related to the injected power into the amplifier fibers. power = 4.45 mW (as shown from
130	Fri Mar 11 17:33:33 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	First hands on the Alphanov amplifier & software	Aurélien, Manar, and I spent more than 2h trying to start the software communicating with the Alphanov amplifier controller.
129	Fri Mar 11 12:59:35 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	Cavity beam Image	Updated beam image after change on the mode axis. Taken after P4.
128	Fri Mar 11 12:46:58 2022	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	FP cavity mode axis change and Finesse measurement	this morning with Manar, we did a cavity mode axis change. we checked the cavity mode centroid
127	Fri Feb 4 10:59:56 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Cavity Lock and Finess measurment	one thing which could reduce the Finesse is the L-shape metal piece if it is slightly inserted in the FP-cavity mode path.
126	Thu Feb 3 19:01:04 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Cavity Lock and Finess measurment	After changing the way of injecting modulation for PDH and modulation for FSR
125	Thu Feb 3 18:59:10 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Cavity Lock and Finess measurment	to measure the Finesse, instead of having 2x EOM for the PDH and for the
123	Thu Feb 3 18:40:04 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	The fluctuation problem has been solved. It was simply the new scheme to inject 2 RF frequencies in a single EOM.
121	Thu Feb 3 14:11:50 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	Cavity Lock and Finess measurment	This morning, me and Ronic managed to obtain the FSR and image of the finesse which is to be analyzed.	6x
120	Thu Feb 3 14:10:08 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	As it can be seen on the first plot, even with a good locking (good reduction of "high" frequencies noise: we had better locking
119	Thu Feb 3 13:56:24 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	Ending alignment series !!
118	Wed Feb 2 11:41:01 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	Adding Oscilloscope images delocked + locked intervals showing the 20% coupling lock
117	Wed Feb 2 11:22:51 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	This morning with Manar, we installed the AOM+RF amplifier and the associated fast feedback loop.
116	Tue Feb 1 16:40:06 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	This afternoon, I did some alignment of the injection mirrors with a fast scan on the LaseLock to get a regular transmission
115	Tue Feb 1 14:17:02 2022	Manar Amer	Fixed	report	lasers and optics \| detectors and electronics	ThomX igloo	FP cavity alignment	Installed and inputs: CW laser ; power = 101 mW PDH ; at output Low
114	Wed Jan 19 09:36:53 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	FP cavity alignment	Yesterday, we did the alignment again using Iris and beam profilers to obtain a more precise result.
113	Mon Jan 17 21:22:28 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	FP cavity alignment	*** Continuation of the alignment ---- FP Cavity Open --- ** The cavity was put under outer
112	Mon Jan 17 10:04:14 2022	Ronic Chiche	Fixed	info	mechanics	ThomX igloo	Documentation about mechanics on Atrium	https://atrium.in2p3.fr/0dded51a-1cb0-43e6-ae0d-626cd5db7078 a lot of schematics regarding the
111	Thu Jan 13 17:08:56 2022	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics	Optical room	Alignment procedure	Picture of the installed mirrors inside the FP cavity. To install an Iris instead of a
110	Tue Jan 11 10:36:35 2022	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	FP cavity alignment	The alignment is on hold until next week 17th - 18th Jan an Alignment attempt will be done
109	Thu Dec 2 21:31:21 2021	Manar Amer	Fixed	report	lasers and optics	ThomX igloo	FP cavity alignment	Note the direction of injection is M1 - M2 - M3 - M4
108	Fri Nov 26 20:12:10 2021	Ronic Chiche	Fixed	report	lasers and optics	ThomX igloo	FP cavity alignment	A continuation of the alignment process was done, there was change in it due to variation in temperature,
107	Thu Nov 4 18:57:16 2021	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	FP cavity alignment	This afternoon, we continued the alignment of the red laser. we did it using the 2 final injection
106	Thu Nov 4 13:05:49 2021	Ronic Chiche	Fixed	info	lasers and optics	ThomX igloo	FP cavity alignment	as the iris used to locate the FP-cavity axis have been removed before moving the table inside the Igloo, we have to find again
105	Fri Dec 18 17:06:53 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Onefive ouput power and spectrum	1) Note: The OneFive laser used for experimenting is the one for the SBox but, for now only this laser arrived
104	Fri Dec 18 16:10:04 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Onefive ouput power and spectrum	After turning on, one can see the 133.33MHz Onefive output power for ~40min with OD2 filter (~/20). So the real output power is
103	Fri Nov 6 14:23:16 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Beam size and finesse	Measurement behind P4 (planar mirror)
102	Tue Oct 27 13:13:50 2020	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Coating reflectivity	Coatings reflectivity curves and datas for HR Saphir, HR Suprasil and HR ULE.	6x
101	Tue Jul 7 12:49:38 2020	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Finesse measurement after the Edge installation	After the Edge installation inside the cavity, the Finesse has been measured several times by modulation technique with an average
100	Tue Jun 16 13:03:52 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Finesse measurement after confinement	After 3 months without human presence, finesse has been measured 3 times with average optimization:
99	Fri Feb 28 17:44:12 2020	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Pointing stability with CVBG	Yesterday, with Titouan, we made some measurements on pointing stability of the laser beam after amplifier and CVBG.
98	Fri Feb 28 09:20:37 2020	Ronic Chiche	Not Fixed	issue	lasers and optics	Optical room	Amplifier laser diodes issue	This is a long time issue for the ThomX amplifier : on the 4 pumping diodes available, the 1st diode has a higher temperature than
97	Wed Feb 26 16:48:02 2020	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Optical spectrum before and after CVBG	Measurement of the optical spectrum with Avantes OSA before (1st picture) and after CVBG (2nd picture) with 2nd stage on the
96	Wed Feb 26 11:05:09 2020	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Optical spectrum analyzer resolution	Same measurement with Koheras @100mW and using fiber coupling lenses between Koheras and Avantes OSA.
95	Wed Feb 26 10:38:37 2020	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Optical spectrum analyzer resolution	The Koheras @0.5mW is directly connected with fibers FC/APC -> FC/PC to the Avantes optical spectrum analyzer.
94	Mon Feb 24 16:28:52 2020	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Beam pulse duration	Last Thursday (20th of February), Loïc and Titouan realigned the stretcher CVBG to its nominal angle and they used an interferometric
93	Wed Feb 19 17:21:28 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Powerup with 2.5ps pulses	A power up has been performed on ThomX until 65kW intracavity power. We didn't see any modes but stored power was really
92	Tue Feb 18 12:24:00 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	ThomX Locked with CVBGs	ThomX has been locked with a new telescope while using compression CVBGs. Coupling is ~50-55% and lock is stable.
91	Fri Feb 14 18:02:37 2020	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Telescope for compressors and ThomX	CVBGs telescope is done with w ~= 1mm. ThomX telescope is done with w ~= 2.3mm in x and y.
90	Fri Feb 14 09:26:07 2020	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Beam pulse duration	Yesterday, Loïc put the CVBG's back to their specified angles. We used an interferometric technique
89	Wed Feb 12 17:43:43 2020	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Beam pulse duration	Yesterday, Loic installed a telescope before CVBG's to reduce the spot size on CVBG's and reduced the incident angle 0.5-1°
88	Fri Feb 7 14:46:55 2020	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Beam pulse duration	We installed the 2 CVBG for compression after the amplifier. We used an interferometric technique
87	Tue Feb 4 14:39:56 2020	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Onefive output power	Onefive output power measured today. 3.52 mW with OD1 filter ==> ~35mW.
86	Thu Nov 28 10:40:29 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	CVBG reference and Eric Cormier calculation	The Stretcher is the "D 24-02-II", it must be used in double path before the amplifier injection.
85	Wed Nov 27 13:53:57 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Onefive output power	The pump voltage has been increased few days ago when looking for a modlock of the laser.
84	Tue Nov 26 16:35:39 2019	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	Optical room	30Hz noise issue	The 30 Hz noise issue has been solved ! It came from translation stage of P1 and/or P4.
83	Tue Nov 26 16:21:27 2019	Lo�c Amoudry	Fixed	issue	vacuum	Optical room	Pneumatic valves	The pneumatic valves are now plugged on the university air network. The air valve is fully openned for
82	Tue Nov 26 16:11:52 2019	Ronic Chiche	Fixed	issue	mechanics	Optical room	First Lock with 2nd satge of amplifier : Motor issue ?	The 500 ms noise disapeared. We had to disable the "power save" mode of the smaract translation stage. AND turn OFF
81	Fri Nov 22 17:56:56 2019	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	Optical room	30Hz noise issue	since some days, we observe the cavity is difficult to lock and a strange 30Hz noise has appeared on the PZT signal which normally
80	Thu Nov 21 11:37:13 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Onefive Origami 33MHz specs	Beam Size Onefive added
79	Wed Nov 13 15:05:18 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Amplifier output power
78	Wed Nov 13 14:44:56 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Amplifier output power	The ouput power of the ThomX amplifier has been measured as a function of the 3rd stage pumps current (0A is 1st and 2nd stage
77	Wed Nov 6 16:11:12 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Spherical mirrors at closest position. FSR, finesse and beam size.	The spherical mirrors are at the closest position to get a FSR ~=33.3435 MHz. Planar mirrors are at the largest position.
76	Tue Oct 22 09:10:45 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	First mode degeneracy on ThomX	Yesterday, we've observed the first degeneracy on ThomX cavity at ~115 kW stored. The shape of the stored power on the oscilloscope
75	Fri Oct 11 18:49:00 2019	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	New locking scheme	Before, the locking scheme was to produce an error signal with the PDH box, send its output to the electronic amplifier box and
74	Fri Oct 11 18:42:32 2019	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	Optical room	First Lock with 2nd satge of amplifier : Finesse issue ?	First of all, we used and optical spectrometer to determine which proportion of pump and signal is in the injected beam.
73	Thu Oct 10 18:03:10 2019	Ronic Chiche	Fixed	issue	mechanics	Optical room	First Lock with 2nd satge of amplifier : Motor issue ?	Global locking almost clean : tranmission and reflection are quite noiseless except the peaks at every 500ms.
72	Thu Oct 10 17:51:26 2019	Ronic Chiche	Fixed	issue	lasers and optics \| detectors and electronics	Optical room	First Lock with 2nd satge of amplifier : Finesse issue ?	1st lock today with the second stage of the amplifier. ~ 300mW of injected power (but which
71	Wed Oct 9 11:41:11 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Onefive spectrum and CVBG spectrum	The Onefive spectrum has shifted a little bit to lower lambda. It's still enough for the experiment (3mW injection of ampli
70	Wed Oct 9 10:16:24 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Fiber injection and onefive output power	Fiber injection is finished with the new ThomX stretching CVBG in double pass (+50% injection power compared to K-BOX CVBG in
69	Wed Oct 9 10:10:01 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Free Spectral Range (FSR)	FSR is 33.347 MHz @1e-8 mbar
68	Wed Oct 9 10:08:24 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Improvement holder amplifier fiber	We've added a clamp in the 3rd stage to prevent the pump fiber from moving and tilting (it was tilting to the left).
67	Thu Oct 3 18:00:10 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	ThomX amplifier M2	The ThomX M2 has been measured between 1.5-1.6 for x and y
66	Thu Oct 3 14:00:13 2019	Lo�c Amoudry	Fixed	issue	cabling	Optical room	Electrical trouble (disjunction)	The circuit breaker on ThomX cavity drops @1.5-1.8kW when we turn on 1/2nd stage of the amplifier or 3rd stage of the
65	Thu Oct 3 13:53:44 2019	Lo�c Amoudry	Fixed	report	vacuum	Optical room	Cavity under vacuum	The cavity is right now at 6.5e-8 mbar (turbo pumps on for 1 night and ionic pumps for 3h), primary pumps and turbo pumps are
64	Thu Oct 3 13:49:58 2019	Lo�c Amoudry	Fixed	info	mechanics	Optical room	Pneumatic valves	Frederic and Manu from vacuum group came this morning to fix again the pneumatic valves which had a leak again.
63	Mon Sep 30 11:30:32 2019	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Finesse measurement	To complete these observations: Finesse has been measured on thursday, right after cleaning the cavity
62	Mon Sep 30 11:20:48 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Diffusion ULE spherical mirror (S3) vs Fused Silicate injection planar mirror (P1)	Observation made with IR Beam Viewer: The observation of P1 and S3 simultaneously while locking shows much higher diffusion
61	Fri Sep 27 16:17:36 2019	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Finesse measurement	After mirrors were going back from LMA for cleaning and thermal anealing, they have been installed in FP cavity for Finesse measurement.
60	Fri Sep 27 10:43:17 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	New Suprasil mirror from LMA	19/09/2019 : email from Chrisophe Michel about AR coating of LMA mirrors after reading that Ta2O5 layers can be damaged in vacuum
59	Wed Sep 25 15:49:28 2019	Ronic Chiche	Fixed	issue	mechanics \| detectors and electronics	Optical room	Motor issue	Today again, same problem with axis 9 blocking the controlling software during the mirror alignment procedure.
58	Thu Sep 12 16:19:26 2019	Lo�c Amoudry	Fixed	report	mechanics \| lasers and optics	Optical room	Cavity dust source check	Several experiments have been done in order to check the potential source of dust in the ThomX cavity. For each step, we look
57	Fri Sep 6 14:59:00 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	LMA cleaning technique	Christophe MICHEL told us more precise informations about spin coater cleaning. They always clean with pur water
56	Fri Sep 6 14:48:14 2019	Lo�c Amoudry	Fixed	report	mechanics \| vacuum	Optical room	Primary vacuum to check dust	The cavity has been cleaned then put under primary vacuum (primary pump without vacuum flow control). Dusts presence was checked
55	Tue Sep 3 18:06:29 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Mirrors sent to LMA	Mirrors have been sent today to LMA for cleaning and maybe annealing (recuit). 3 ULE of ThomX and the fused silicate for injection
54	Tue Sep 3 18:04:03 2019	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Finesse measurement after mirror cleaning using the spin coater	Following finesse measurements (start @10700): Clean P1 with SC (water) + isoprop (wipe) finesse @15000
53	Tue Sep 3 17:51:04 2019	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics \| vacuum	Optical room	Vessel cleanliness	looking in the vessel of the FP cavity using a UV lamp shows a lot of dust... more dust than outside the cavity !!!
52	Fri Aug 30 17:52:41 2019	Ronic Chiche	Fixed	issue	mechanics \| detectors and electronics	Optical room	Motor issue	Today, Axis 9 (Z-axis of P1) has blocked the software which drives all the motors. impossible to bypass the problem.
51	Fri Aug 30 17:46:15 2019	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Finesse measurement after mirror cleaning using the spin coater	today I cleaned S3 with isopropanol and then with pure water on spin coater. Finesse is only 10 700.(coupling 50%
50	Fri Aug 30 09:44:56 2019	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Finesse measurement after mirror cleaning using the spin coater	Last Finesse measurement in air : ~ 17 000 the 20th of may (see logbook) 28th and 29th of august, we cleanned,
49	Mon Jul 29 17:15:35 2019	Lo�c Amoudry	Fixed	info	mechanics \| lasers and optics	Optical room	Spin coater air supply removed and front panel changed	Spin coater firstly needed vacuum and air supply. The air supply being useless for our experiments, it has been disabled.
48	Thu Jul 4 18:30:39 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	2nd stage output power validated	Onefive output power : 28mW Power before fiber injection : 7.8mW
47	Thu Jul 4 18:28:55 2019	Lo�c Amoudry	Fixed	issue	lasers and optics	Optical room	Onefive 33MHz unmodelocked	Oscillator randomly unmodelocked on 3rd july afternoon (during oscillator power measurement, maybe a reflection from the
46	Thu Jul 4 10:17:46 2019	Ronic Chiche	Fixed	info	detectors and electronics	Optical room	New design for PDH boxes	A new design has been studied for the 5 PDH boxes to better match the low (33MHz) repetition rate of the ThomX laser.
43	Tue Jun 18 20:44:34 2019	Huan Wang	Fixed	info	lasers and optics	Optical room	telescope for Koheras	telescope of Koheras is removed, information record here: - distance between collimator edge
42	Wed Jun 12 17:49:20 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Polarization	Polariztion measured with Input vertically/horizontally polarized (~100% DOLP) - Transmission (P4) locked on cavity
41	Wed Jun 12 12:07:11 2019	Lo�c Amoudry	Fixed	report	mechanics \| lasers and optics	Other	Amplifier mission Bordeaux	M² mesuré à 10W. M²x = 1.17 M²y = 1.14
40	Tue Jun 11 18:03:10 2019	Lo�c Amoudry	Fixed	report	mechanics \| lasers and optics	Other	Amplifier mission Bordeaux	Voyage Bordeaux au CELIA avec Jérôme LHERMITE (Loïc et Titoutan) 1er jour (34°) :
39	Thu May 23 17:30:03 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Transmission of Sapphire mirror	See image.
38	Thu May 23 10:10:56 2019	Ronic Chiche	Fixed	report	lasers and optics	Optical room	Finesse measurement by decay time technique	5 Files attached: - Note on the technique and results for the present cavity on 2019, May 21th
37	Tue May 21 17:49:30 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Finesse after cleaning (new suprasil mirror)	15/05/19-20/05/19: Cleaning of the mirrors: Initial finesse 14000 @air
36	Tue May 21 17:44:46 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	New Suprasil mirror from LMA	14/05/19: New Suprasil mirror received. It will replace the S-BOX suprasil mirror on
35	Thu Apr 18 16:17:53 2019	Lo�c Amoudry	Fixed	issue	lasers and optics	Optical room	33MHz Onefive power overtime decrease	Power of the 33MHz Onfive decreases over time. Have to pay attention to that. Note that air dryers have never been
34	Thu Apr 18 16:07:23 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Injection of 33MHz Onefive through fiber	Output power of the Onefive, and power after injection and different components have been measured.
33	Wed Apr 10 13:11:46 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Mirror's cleaning and finesse	Summary of what have been cleaned the last week: P1 with isopropanol, finesse 11000
32	Mon Apr 8 11:55:40 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	P4 cleaned and finesse measurement	P4 cleaned with isopropanol. Finesse measured afterward: ~=13 000 (clear increase)
31	Mon Apr 8 10:18:31 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Finesse after 2days	Finesse measured this morning after P1 SUPRASIL being into the cavity for two days. In order to check if it's getting
30	Fri Apr 5 11:28:39 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Finesse with P1 SUPRASIL	P1 SUPRASIL has been installed instead of P1 Sapphire. It has been cleaned 3 times on each face with wipe+isopropanol before
29	Fri Apr 5 11:18:47 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Transmission of the mirrors	P1 transmission out of the mount (means angle of the mirror is not the real angle): Pin = 3.2 mW
28	Thu Apr 4 09:42:12 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Transmission of the mirrors	After verification, transmission of P1 correspond to ~150ppm. The 1337ppm come from a beam leakage.
27	Tue Apr 2 18:05:46 2019	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Beam size at closest spherical mirrors position	S3 and S2 @ +1 640 000 and P1 and P4 @ -825 000 Diameter in x: 4.7mm
26	Tue Apr 2 18:03:31 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Transmission of the mirrors	We openned the cavity, removed S2 and measured trans of P1 and same for S2. Pin ~= 3.91 mW
25	Tue Apr 2 17:59:18 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Finesse after removing wires	19/04/01: We removed the wires from the beam path in the cavity. Finesse stayed at 3400. FSR: 33.342 MHz.
24	Fri Mar 29 18:33:15 2019	Ronic Chiche	Fixed	issue	mechanics \| lasers and optics	Optical room	Alignment procedure	we did again the complete alignment procedure starting with iris and optimizing injection motors Ma and Mb, then installing mirror
23	Thu Mar 28 09:25:58 2019	Lo�c Amoudry	Fixed	issue	mechanics	Optical room	Motors Z axis reversed	All Z motors (for P1, S2, S3 and P4) have been initialized again with a proper HOME command with their own controller with
22	Tue Mar 26 18:32:40 2019	Lo�c Amoudry	Fixed	report	mechanics \| lasers and optics \| cabling	Optical room	Wires in laser path	There was some ceramic wires close to the beem path right before P4. We moved them away (we can imagine they could move again
21	Tue Mar 26 18:26:32 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Check of mirrors and coating directions	Direction of HR face of P1 and P4 have been checked, there was no problem. The mirrors are in the good direction and the coating
20	Fri Mar 22 17:53:10 2019	Lo�c Amoudry	Fixed	report	lasers and optics \| vacuum	Optical room	Cavity at atm pressure	Dry air injected into the cavity. Lock has been proceeded without any trouble. ~~4000 finesse. Considered to
19	Tue Mar 19 17:01:52 2019	Lo�c Amoudry	Fixed	issue	mechanics	Optical room	Motors Z axis reversed	S2 and S3 z-axis are initially at 1/4 (5mm/20mm) of there range over ~20mm range. This is meant to be able to spread them up to ~15mm in
18	Tue Mar 19 16:35:32 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Beam size and finesse	FSR initiale : 33.34 MHz (S3 = -825000 et S4 = -825000) Beam size initiale : wx=2.05mm
17	Tue Feb 19 15:50:08 2019	Lo�c Amoudry	Fixed	info	mechanics	Optical room	Motors connexions	Motors are connected. The true mirror's name are P1 for injection mirrors, S2, S3 and P4. (S=spherical, P=planar).
16	Thu Feb 14 18:20:52 2019	Lo�c Amoudry	Fixed	report	mechanics \| lasers and optics	Optical room	Basic alignment & alignment motors check	14/02/19: The 4 motors but Mby control works. Mby motor home does not bring it to its "middle" position
15	Fri Feb 1 14:10:25 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Other	Mirrors sent to LMA	30/01/19 - As LMA people came, we discussed about the spots on ThomX mirrors which should be clean. As mentionned in "SBOX commissioning",
14	Fri Feb 1 13:39:21 2019	Lo�c Amoudry	Fixed	report	lasers and optics	Optical room	Mirrors checked with binocular microscope	29/01/19 - ThomX mirrors have also been checked with binocular microscope. They shown the same spots as S-BOX mirrors.
13	Fri Feb 1 13:20:47 2019	Lo�c Amoudry	Fixed	report	utilities	Optical room	End of cleaning, plastic fixed on cavity	08/02/19 - End of the cleaning process.
12	Wed Jan 16 14:54:14 2019	Lo�c Amoudry	Fixed	report	lasers and optics \| utilities	Optical room	Cleaning outside IP cavity	From 7th january to 11th january.
11	Fri Dec 21 13:55:09 2018	Lo�c Amoudry	Fixed	info	vacuum	Optical room	End of vacuum test and cavity ready for cleaning	Vacuum tests finished on 19 december 2018. Spent last two days to discuss
10	Mon Nov 26 15:18:49 2018	Ronic Chiche	Fixed	info	vacuum	Optical room	Etuvage cavit� THOMX	Mail de Bruno Mercier du 19/11/2018 : Une première cavité
9	Mon Oct 22 11:29:41 2018	Ronic Chiche	Fixed	info	mechanics	Optical room	Remontage des v�rins	Mail de Yann du 8/10/2018 : Bonjour, Tous les vérins sont maintenant
8	Mon Oct 22 11:27:35 2018	Ronic Chiche	Fixed	info	mechanics	Optical room	Remontage m�canique	Mail de Yann du 12/10/2018 : Je vous fais le bilan des actions effectuées :
7	Mon Oct 22 11:03:22 2018	Ronic Chiche	Fixed	info	vacuum	Optical room	D�tection de fuite	Mail de Bruno Mercier du 18/10/2018 : Un petit CR de la journée:
6	Fri Oct 5 10:17:30 2018	Ronic Chiche	Fixed	report	mechanics \| cabling	Optical room	test des v�rins ISP 20mm et 6mm
5	Wed Oct 3 11:28:46 2018	Ronic Chiche	Fixed	report	mechanics \| cabling	Optical room	test des v�rins ISP 20mm et 6mm	Après avoir utilisé la chaine : driver ISP - cable ISP DB9 - Feedthrough enceinte DB9-DB9 - cable perlé DB9-SUB-C
4	Tue Oct 2 18:00:36 2018	Ronic Chiche	Fixed	issue	mechanics \| cabling \| software	Optical room	test des v�rins ISP
3	Tue Oct 2 16:23:54 2018	Ronic Chiche	Fixed	issue	mechanics \| cabling \| software	Optical room	test des v�rins ISP	* les vérins de 20mm (axe Z) ont été testés sur table grace à une rallonge SUB-C - DB9,
2	Thu Sep 27 15:43:48 2018	Ronic Chiche	Fixed	info	lasers and optics	Optical room	Onefive Origami 33MHz specs - Polarisation	one rotate a lambda/2 before a PBS and meausure the refected power: Pmax=35.6 mW
1	Tue Sep 25 19:17:43 2018	Lo�c Amoudry	Fixed	info	lasers and optics	Optical room	Onefive Origami 33MHz specs	Power during ~20h, power after turn on, spectrum image and excel datas, polarisation and pulse length.	6x

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