| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
421
|
Tue Apr 29 09:26:08 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | today, after 1 week of vacation, I was
able to easily lock the cavity with 92kW
with 33% amp ratio without too much optimizations |
|
|
425
|
Wed May 14 09:50:52 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | Today, I removed the NKT oscillator from
the bunker to put it in the PLIC room.
I locked the FP cavity and obtained |
|
|
430
|
Wed Jun 25 18:48:28 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | New locking parameters (I got 98kW for
33% amp ratio) :
Axis 18 position : +0009420 |
|
|
433
|
Tue Jul 1 17:31:41 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | We had a long run without any lock loss
during ~1h with the 23kW recipie in the morning.
during the afternoon, we had some |
|
|
434
|
Tue Jul 8 18:45:17 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | long run yesterday at relatively low power
(~23kW) with double loop (FPC + RF) between
10am and 6pm |
|
|
435
|
Tue Jul 8 18:48:51 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | long run today at relatively
nominal power (~90kW) with double loop
(FPC + RF) between 13:30am and 6:30pm |
|
|
393
|
Wed Jan 22 15:32:53 2025 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | vacuum | ThomX igloo | correlations between vacuum gauges and lock losses @ 20Hz | the machine people saw a correlation between
BPM jumps and vacuum gauges peaks related
to breakdowns in the beam pipe. |
|
|
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. |
|
|
408
|
Wed Feb 19 09:28:12 2025 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | correlations between accelerometer and lock losses @ 20Hz | long term pk-pk measurement of the accelerometer
(placed on the optical cavity table, on the
marble part close to the laser oscillator) |
|
|
409
|
Wed Feb 19 10:35:06 2025 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | correlations between accelerometer and lock losses @ 20Hz | I installed the accelerometer on the ground
close to one feet of the FP cavity hexapod
(see picture) and restarted the acquisition |
|