| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
324
|
Fri Feb 9 09:50:45 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 | yesterday I did 2 tests to try to understand
the origin of the 20Hz oscillation which
is dominant in the remaining 10-20ps rms |
|
|
323
|
Wed Feb 7 18:33:42 2024 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | This morning with Daniele, we changed the
laser/RF locking scheme :
1) we use the laser 33MHz internal |
|
|
322
|
Fri Feb 2 11:53:40 2024 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser cavity temperature/pressure sensitivity | this morning, I did a 500MHz beating frequency
(Laser vs RF) drift test with the Smaract
motors configured with "Sensor Mode" |
|
|
321
|
Thu Feb 1 17:23:23 2024 |
Ronic Chiche | Fixed | info | detectors and electronics | ThomX igloo | locking | during the last days we changed the FP-cavity
- RF reference locking system to force the
right bucket: |
|
|
320
|
Fri Jan 26 13:04:56 2024 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | 33MHz (FP-cavity vs RF) phase stability | today, I locked the laser on the
FP-cavity and the FP-cavity on the RF reference
with 47kW inside the FP-cavity. |
|
|
319
|
Fri Jan 26 11:05:27 2024 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | cabling | ThomX igloo | controller M1 & M4 (plan mirrors) with IcePap controllers | at the begining of each session, it will
be mandatory to avoid any backlash for the
motors : |
|
|
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). |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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... |
|
|
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) |
|