| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 ? |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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. |
|
|
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, |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
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. |
|
|
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 |
|
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 |
|
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 |
|