| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 |
|
|
411
|
Fri Feb 21 10:13:03 2025 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | correlations between accelerometer and lock losses @ 20Hz | for this 20Hz oscillation, could it be
a natural resonance of the optical table
placed on its feet ? |
|
|
417
|
Tue Mar 18 11:25:07 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, the cavity was pretty misaligned
=> basic alignment in y direction helps
a lot => 93kW for 33% amp ratio. |
|
|
419
|
Mon Mar 31 17:12:56 2025 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | today, the alignment of FP cavity was so
bad that I tuned the 01 mode by error (CEP
and alignment)... insead of the 00 |
|
|
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 |
|
|
452
|
Tue Sep 16 17:41:28 2025 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Accelerometer measurement | with Daniele, we placed the accelerometer
on top of the fiber amplifier box which is
inside the housing. |
|
|
22
|
Tue Mar 26 18:32:40 2019 |
Loïc Amoudry | Fixed | report | mechanics | lasers and optics | cabling | Optical room | Wires in laser path | There was some ceramic wires close to the
beem path right before P4. We moved them
away (we can imagine they could move again |
|
|
316
|
Thu Jan 25 10:15:28 2024 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | cabling | ThomX igloo | controller M1 & M4 (plan mirrors) with IcePap controllers | previously, we have connected motor M4
with an IcePap controller.
see this post : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/278 |
|
|
317
|
Thu Jan 25 12:45:41 2024 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | cabling | ThomX igloo | controller M1 & M4 (plan mirrors) with IcePap controllers | this double motors scheme works good.
if motor P4 is used by increasing
value, the FP-cavityPZT signal (pink signal |
|
|
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 : |
|
|
16
|
Thu Feb 14 18:20:52 2019 |
Loïc Amoudry | Fixed | report | mechanics | lasers and optics | Optical room | Basic alignment & alignment motors check | 14/02/19: The 4 motors but Mby control
works. Mby motor home does not bring
it to its "middle" position |
|