| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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) |
|
|
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 |
|
473
|
Thu Jun 11 17:11:02 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | vacuum | ThomX igloo | removing of the M1 mirror | This afternoon, we installed a new M1 mirror,
the only one for which the box was not already
opened. |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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) |
|
|
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. |
|
|
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: |
|
|
249
|
Thu Jul 27 18:47:57 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | pour préparer le lock cavité-anneau,
j'ai un setup de lock en salle optique
entre le laser OneFive 133MHz et un synthé |
|
|
250
|
Fri Jul 28 13:19:22 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz |
régler le problème
1:
Kevin m'a apporté un déphaseur |
|
|
251
|
Mon Jul 31 19:17:40 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | Today, I installed a DB9-DB9 female-male
cable on the PZT connector of the FP-cavity.
the PZT is connected between pins |
|
|
252
|
Wed Aug 2 11:38:20 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 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. |
|
|
253
|
Fri Sep 8 19:35:36 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | this afternoon, I installed the frequency
detection scheme in the bunker :
- I changed the large reflected |
|
|
254
|
Tue Sep 12 17:58:41 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | this afternoon, I tried to lock the FP-cavity
on a local 500MHz synthesizer as a frequency
reference |
|
|
255
|
Wed Sep 13 12:24:14 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 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. |
|
|
256
|
Wed Sep 13 18:33:50 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 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 |
|
|
257
|
Thu Sep 14 19:16:44 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 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 |
|
|
268
|
Wed Sep 20 19:17:44 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | after a sudden FP-cavity Finesse increase,
we had to install the Fast Feedback Loop
in order to continue to lock the cavity. |
|