| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
427
|
Wed Jun 11 18:59:34 2025 |
Ronic Chiche | Under Process | issue | mechanics | lasers and optics | vacuum | detectors and electronics | ThomX igloo | Possible causes for the noise in the FP-cavity system | list of possible causes of the high frequency
noise which makes the system loosing the
lock => to be checked. |
|
|
429
|
Wed Jun 25 09:57:56 2025 |
Ronic Chiche | Under Process | issue | mechanics | lasers and optics | vacuum | detectors and electronics | ThomX igloo | Possible causes for the noise in the FP-cavity system | 4.3 - Vibrations of the mirror mounts due
to temperature related to cavity power (the
electrons machine is OFF) |
|
|
53
|
Tue Sep 3 17:51:04 2019 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | vacuum | Optical room | Vessel cleanliness | looking in the vessel of the FP cavity
using a UV lamp shows a lot of dust... more
dust than outside the cavity !!! |
|
|
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. |
|
|
471
|
Wed Jun 10 16:16:33 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | vacuum | ThomX igloo | removing of the M1 mirror | after trying to increase the power and
after moving S3 to try to change the size
of the beam on the mirrors, the FPC power |
|
|
472
|
Thu Jun 11 11:16:55 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | vacuum | ThomX igloo | removing of the M1 mirror | this morning, with Daniele, we took some
images of the M1 mirror HR surface :
1- large image span of the mirror |
6x |
|
473
|
Thu Jun 11 17:11:02 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | vacuum | ThomX igloo | removing of the M1 mirror | This afternoon, we installed a new M1 mirror,
the only one for which the box was not already
opened. |
|
|
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. |
|
|
132
|
Mon Mar 14 18:39:40 2022 |
Manar Amer | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Current Installed Setup | Attached is the current setup in ThomX |
|
|
241
|
Fri Sep 8 12:43:04 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Removing high order modes | this morning we locked the laser and the
FP-cavity with ~ 40kW => some HOM appeared
"randomly" depending on the power. |
|
|
242
|
Fri Sep 8 18:22:21 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Removing high order modes | here is the picture of the L-shape arm
and the inside of the vessel.
this image corresponds to the "zero" |
|
|
245
|
Tue Sep 12 14:28:36 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Removing high order modes | yesterday with Daniele, we tried again
to move the arm horizontally and vertically
from the "zero position" to have |
|
|
258
|
Fri Sep 15 18:00:41 2023 |
Ronic Chiche | Under Process | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | 20Hz oscillation in the locking between Laser and FP-cavity | this morning, we tried to find the origin
of the 20Hz oscillation.
- we switched OFF the laser Smaract |
|
|
259
|
Fri Sep 15 18:11:07 2023 |
Ronic Chiche | Under Process | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | 20Hz oscillation in the locking between Laser and FP-cavity | this afternoon, we did 2 tests to better
understand this 20Hz oscillation:
- we locked the amplified laser |
|
|
261
|
Fri Sep 15 18:56:36 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | !!! strange FP cavity behavior => impossible to lock !!! | suddenly, BEFORE switching the HV amplifier
ON and BEFORE connecting it to the EOM (in
order to explore the HV effect on the EOM |
|
|
263
|
Mon Sep 18 12:48:39 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | !!! strange FP cavity behavior => impossible to lock !!! | this morning, we tried:
- to move a bit the arm of the
L-shape off the beam axis (in case of it |
|
|
264
|
Mon Sep 18 17:12:07 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | !!! strange FP cavity behavior => impossible to lock !!! | it could be also an optical unstability,
as when the intra-cavity power increases,
the radius of curvatures of the mirrors increases |
|
|
265
|
Wed Sep 20 14:16:09 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | !!! strange FP cavity behavior => impossible to lock !!! | This morning,
- I installed the fast feedback
loop. |
|
|
266
|
Wed Sep 20 19:10:16 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | !!! strange FP cavity behavior => impossible to lock !!! | this afternoon, in adjusting the CEP and
improving the parameters of the lock, I was
able to get ~ 47kW stable inside the cavity, |
|
|
275
|
Thu Nov 9 16:40:16 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Ring frequency / Laser "day by day" locking | today, the equivalent Smaract position
corresponding to the 500.25MHz ring frequency
is +156µm on MCS-1/ch0 (closed loop |
|