| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 : |
|
|
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. |
|
|
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: |
|
|
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" |
|
|
323
|
Wed Feb 7 18:33:42 2024 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | This morning with Daniele, we changed the
laser/RF locking scheme :
1) we use the laser 33MHz internal |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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. |
|