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