| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
57
|
Fri Sep 6 14:59:00 2019 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | LMA cleaning technique | Christophe MICHEL told us more precise
informations about spin coater cleaning.
They always clean with pur water |
|
|
34
|
Thu Apr 18 16:07:23 2019 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Injection of 33MHz Onefive through fiber | Output power of the Onefive, and power
after injection and different components
have been measured. |
|
|
465
|
Wed Apr 22 09:52:40 2026 |
Ronic Chiche | Under Process | report | lasers and optics | ThomX igloo | Increasing the FP-cavity power | Last Friday, we tried to increase the FP-cavity
power by just increasing the amplifier ratio
from 35% to 70%. |
8x |
|
466
|
Mon Apr 27 16:55:15 2026 |
Ronic Chiche | Under Process | report | lasers and optics | ThomX igloo | Increasing the FP-cavity power | today with Alice and Daniele,
we checked the distance of the
optical setup : |
|
|
467
|
Wed Apr 29 09:38:20 2026 |
Ronic Chiche | Under Process | report | lasers and optics | ThomX igloo | Increasing the FP-cavity power | new power increase after alignment of the
waveplates and iris.
amplifier ratio (%) => FPC cavity |
|
|
468
|
Wed Apr 29 15:31:06 2026 |
Ronic Chiche | Under Process | report | lasers and optics | ThomX igloo | Increasing the FP-cavity power | I installed a stronger optical filter on
the reflection photodiode and loaded it on
1kOhms. |
|
|
469
|
Mon May 18 11:33:46 2026 |
Ronic Chiche | Under Process | report | lasers and optics | ThomX igloo | Increasing the FP-cavity power | this morning with Daniele, we set the amplifier
ratio to 33% => 97kW
then, we set the amplifier ratio |
|
|
470
|
Thu May 28 10:31:23 2026 |
Ronic Chiche | Under Process | report | lasers and optics | ThomX igloo | Increasing the FP-cavity power | Last friday, with Daniele, we did some
realignement on the 2nd CVBG of the compressor
: the beam shape seems better, now. |
|
|
226
|
Wed Jun 28 19:07:42 2023 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Incoming laser beam power issue | today, we observed on the photodiode used
in reflexion of the cavity, that its voltage
level stops increasing after 50% of power |
|
|
68
|
Wed Oct 9 10:08:24 2019 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Improvement holder amplifier fiber | We've added a clamp in the 3rd stage
to prevent the pump fiber from moving and
tilting (it was tilting to the left). |
|
|
457
|
Tue Sep 30 15:17:30 2025 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | High frequency noise | Today, the lock of the FPC was particularly
bad (maybe the worst ever seen), with a lot
of high frequency noise. |
|
|
458
|
Wed Oct 1 10:14:12 2025 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | High frequency noise | At the end of the day, we found out what
was the origin of this noise : some road
renovation work with jackhammer and road |
|
|
459
|
Tue Oct 28 10:07:48 2025 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | High frequency noise | After this observation, we did a test with
Daniele to try to correlate the road traffic
in front of the Igloo with the lock losses |
|
|
460
|
Tue Oct 28 17:31:47 2025 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | High frequency noise | we did some tests with Marie to make some
vibrations on the door.
below, I exhibit some pictures of |
|
|
463
|
Mon Dec 8 11:17:17 2025 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | High frequency noise | This morning, I installed a high-voltage
probe (1:1000) on the AC-line to see if one
could detect a correlation between lock losses |
|
|
413
|
Fri Feb 21 19:52:57 2025 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | software | ThomX igloo | Good Xrays production trend | this afternoon, we succeeded to get a quite
long Xray production trend around 15-20 minutes
with a flux above 25k on i1. |
|
|
69
|
Wed Oct 9 10:10:01 2019 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Free Spectral Range (FSR) | FSR is 33.347 MHz @1e-8 mbar
|
|
|
318
|
Thu Jan 25 13:36:35 2024 |
Ronic Chiche | Fixed | info | detectors and electronics | ThomX igloo | First stable X-rays production | this morning, we locked the laser on the
FP-cavity with about 48-49kW stable in the
FP-cavity (for 32% of amplifier ratio). |
|
|
76
|
Tue Oct 22 09:10:45 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | First mode degeneracy on ThomX | Yesterday, we've observed the first
degeneracy on ThomX cavity at ~115 kW stored.
The shape of the stored power on the oscilloscope |
|
|
130
|
Fri Mar 11 17:33:33 2022 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | First hands on the Alphanov amplifier & software | Aurélien, Manar, and I spent more
than 2h trying to start the software communicating
with the Alphanov amplifier controller. |
|