| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
344
|
Wed Jun 19 09:07:56 2024 |
Ronic Chiche | Fixed | info | software | ThomX igloo | New password for login on the ThomX computer | the previous password has expired.
the new access from the computer
: |
|
|
343
|
Thu Jun 6 09:17:02 2024 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier issue | FYI : to access special menus on the Alphanov
software,
login : "Administrator" |
|
|
342
|
Fri May 31 18:12:59 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | today with Daniele, we disconnected the
EOM to increase the injected power of the
amplifier, we were at 4.8mW but we still |
|
|
341
|
Tue May 28 15:05:46 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | today, I tried to restart the amplifier
at 0% (without 3rd stage) but it didn't
start... still the same error message. |
|
|
340
|
Tue May 14 10:37:41 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | the air temperature is between 21°C
and 22°C.
I tried to lock the cavity but |
|
|
339
|
Tue May 14 09:20:27 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | Yesterday, the ThomX water circuit should
have been repared,
and yesterday aftenoon, Daniele restarted |
|
|
338
|
Thu Apr 25 09:09:49 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation |
this morning, the chiller was in
error and I had to restart it. |
|
|
337
|
Thu Apr 11 09:58:10 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | this morning, the computer was restarted
and I had to launch all the applications.
no problem except the powermeter for |
|
|
336
|
Tue Apr 9 09:38:18 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | this morning, I had to restart the chiller.
Temp Amp 1 is at 27.5°C after having
started the amplifier at 33% ratio. |
|
|
335
|
Tue Apr 2 09:19:31 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | from now on, the transmission factor for
calculating the FP intra cavity power is
1/1.75ppm ~ 570 000 (changed in the Powermeter |
|
|
334
|
Tue Apr 2 08:51:21 2024 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | New multiplication factor for the Fabry-Perot intra-cavity power | last week, we measured the transmission
of a plan mirror from the same batch than
the ThomX mirrors and we got ~ 1.75ppm instead |
|
|
333
|
Tue Mar 26 10:20:54 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | This morning, I locked again the FP-cavity
at more than 50kW with 33% of laser amplifier
ratio. |
|
|
332
|
Tue Mar 19 13:01:22 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | FP-cavity lock survey during the Linac section changing operation | This morning with Daniele, we operated
the FP-cavity to be sure there is no issue
due to the Linac section changing operation |
|
|
331
|
Tue Mar 5 11:20:43 2024 |
Ronic Chiche | Fixed | info | software | ThomX igloo | correct parameters for locking the FP-cavity | this morning, I finished the FP-cavity
alignment with the new ring RF frequency.
I get back 50kW @ 33% amplifier ratio. |
|
|
330
|
Mon Mar 4 18:32:21 2024 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser and FP cavities frequency adjustment | This afternoon, I did the 2nd half of the
travel: dF @ 33MHz = 0Hz
=> the Smaract motor position is |
|
|
329
|
Mon Mar 4 12:39:56 2024 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser and FP cavities frequency adjustment | at the beginning of the procedure, the
frequency gap between the new Ring 33MHz
frequency (33.3378MHz) and the laser/FP cavities |
|
|
328
|
Mon Mar 4 09:32:06 2024 |
Ronic Chiche | Fixed | info | software | ThomX igloo | correct parameters for locking the FP-cavity | this morning I solved the problem of the
33MHz frequency beating which should be ~12kHz
between the generator (at the new frequency |
|
|
327
|
Fri Mar 1 18:38:17 2024 |
Ronic Chiche | Fixed | info | software | ThomX igloo | correct parameters for locking the FP-cavity | Today, we restarted the FP-cavity locking,
after 3 weeks without using it.
those 3 weeks have been used to set |
|
|
326
|
Fri Feb 9 18:00:05 2024 |
Ronic Chiche | Under Process | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | 20Hz oscillation in the locking between Laser and FP-cavity | measure to be done next week to check the
20Hz noise on the laser amplifier signal:
- install a DET10 in reflection |
|
|
325
|
Fri Feb 9 15:49:39 2024 |
Ronic Chiche | Under Process | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | 20Hz oscillation in the locking between Laser and FP-cavity | what does this 10ps phase jitter mean in
term of cavity length variations ?
L = L0 + dL sin(2pi fm t) = L0 |
|