| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
293
|
Tue Nov 28 11:32:17 2023 |
Ronic Chiche | Fixed | info | mechanics | detectors and electronics | ThomX igloo | Smaract motors parameters and controller | current Smaract motors parameters :
- Closed loop Max frequency : 5000
- Signal Amplitude threshold : 2047 |
|
|
295
|
Tue Nov 28 19:01:19 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Long term lock of Laser-FP cavity-RF reference | today for the first time, we were able
to make a long term lock of all the elements
(Laser on FP cavity and FP-cavity on RF reference) |
|
|
296
|
Wed Nov 29 09:35:10 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser cavity temperature/pressure sensitivity | long-term correlation, over 5-6 days, between
the temperature measured in the bunker, outside
of the housing (blue curve) and the temperature |
|
|
298
|
Wed Nov 29 12:33:33 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Long term lock of Laser-FP cavity-RF reference | today, I did a 20 minutes "double
lock" run w/o any single lock loss.
the attached file shows the recorded |
|
|
299
|
Wed Nov 29 16:39:16 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Long term lock of Laser-FP cavity-RF reference | this afternoon, we did a new long-term
"double lock" run w/o any single
lock loss during 1/2h. |
|
|
300
|
Thu Nov 30 12:33:08 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | FP-cavity inside power sensitivity | this morning I monitored the frequency
shift between the FP-cavity frequency (the
laser is locked on it) and the RF reference |
|
|
303
|
Thu Dec 7 09:09:27 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | New mirrors batch informations | the 2 files describe the specfications
for the16 mirrors ordered (4 for ThomX
+ spare, 4 for SBOX + spare) and the measurements |
|
|
305
|
Fri Dec 8 12:21:25 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | Strecher and fiber injection alignment | today, the Alphanov amplifier stopped because
of the too low injected power : ~2.5mW (measured
by the Alphanov software) |
|
|
307
|
Fri Dec 22 09:46:18 2023 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | Christmas shutdown | this morning, I shut off all the equipements
(especially the computer) except the ones
powered by the UPS : laser controller, laser |
|
|
308
|
Fri Dec 22 16:13:27 2023 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | Christmas shutdown | this afternoon, I checked visually what
happens when the AC power of the UPS is broken
down => the laser controller has still |
|
|
309
|
Wed Jan 10 14:52:22 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | Restarting equipements after Christmas shutdown | this morning, I plugged back the 4 power
cables which supply all the equipments.
all the equipments have restarted |
|
|
310
|
Wed Jan 10 15:21:46 2024 |
Ronic Chiche | Under Process | info | lasers and optics | ThomX igloo | Variable focal lens validation | we plan to use Electrically Tunable Lenses
EL-10-30-C NIR to build the ThomX telescope
but they need to be compatible with the powerful |
|
|
311
|
Wed Jan 10 18:43:03 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | Restarting equipements after Christmas shutdown | the laser coupled into the amplifier is
still measured at ~3mW at the input, on the
Alphanov software, once the Amp stage are |
|
|
312
|
Thu Jan 11 13:42:16 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | Restarting equipements after Christmas shutdown | this morning, I set the Ring frequency
at 500.25MHz and after switching ON the power
supply of the amplifiers for the RF signal |
|
|
313
|
Tue Jan 16 12:19:35 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | Restarting equipements after Christmas shutdown | on last friday (12/01/2024), the IcePap
DS issue was solved and I was able to control
the FP-cavity motors properly. |
|
|
314
|
Tue Jan 16 12:26:12 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | 33MHz (FP-cavity vs RF) phase stability | this morning, with Vincent Chaumat, we
made a beating (phase detection) between
the laser 33MHz and the 33MHz coming from |
|
|
315
|
Fri Jan 19 18:05:42 2024 |
Ronic Chiche | Fixed | info | detectors and electronics | ThomX igloo | Adding one photodiode in reflection | this morning, I added a DET36 photodiode
in reflection (I used a thin beam splitter)
to better measure the coupling over the full |
|
|
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 |
|
|
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). |
|