| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
297
|
Wed Nov 29 12:20:18 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Temperature control of the FP-cavity length | today, I removed one of the DC voltage
supply (as with 30V, we are already able
to 30°C on the heating cable). |
|
|
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 |
|
|
301
|
Thu Nov 30 15:53:10 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Temperature control of the FP-cavity length | this afternoon, I started the heating cable after
the warm-up of the FP-cavity :
14h20 : start to fill 50kW |
|
|
302
|
Mon Dec 4 10:45:50 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Temperature control of the FP-cavity length | last friday, I locked the cavity and then,
switched ON the heating cable after waiting
the cavity reaches a steady state in frequency |
|
|
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 |
|
|
304
|
Thu Dec 7 14:59:02 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Temperature control of the FP-cavity length | on last tuesday, I did a long-term measurement
of the frequency drift when the heating cable
is powered ON at 20V (2x 10V) @ t=0mn. |
|
|
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) |
|
|
306
|
Mon Dec 11 17:21:32 2023 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Temperature control of the FP-cavity length | today with Fatematuj, we did a long-term
frequency drift measurement between the FP-cavity
loaded with 50kW and the RF reference frequency... |
|
|
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 |
|