| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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. |
|
|
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. |
|
|
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 |
|
|
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, |
|
|
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. |
|
|
445
|
Wed Jul 16 17:17:57 2025 |
Ronic Chiche | Under Process | info | lasers and optics | ThomX igloo | Suite tests stabilité | We continue to find what gives high freq.
perturbation.
The laser starts at 92 KW it is |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
464
|
Mon Feb 2 15:29:45 2026 |
Ronic Chiche | Fixed | 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 |
|
|
471
|
Wed Jun 10 16:16:33 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | vacuum | ThomX igloo | removing of the M1 mirror | after trying to increase the power and
after moving S3 to try to change the size
of the beam on the mirrors, the FPC power |
|
|
472
|
Thu Jun 11 11:16:55 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | vacuum | ThomX igloo | removing of the M1 mirror | this morning, with Daniele, we took some
images of the M1 mirror HR surface :
1- large image span of the mirror |
6x |