| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
361
|
Fri Sep 6 17:27:20 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 | could it be possible this 20Hz oscillations
comes from anouncements in the bunker, puting
the housing+table in vibration ? |
|
|
365
|
Tue Sep 17 13:04:32 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | here are the (good) lock parameters used
this morning.
for the RF/FPC lock, the 33MHz |
|
|
366
|
Thu Oct 3 16:38:03 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | Today with Daniele and Alice, we operated
to cavity.
we obtained 84kW for 33% of amplifier |
|
|
367
|
Tue Oct 8 11:59:27 2024 |
Fatematuj Johora | Under Process | report | lasers and optics | Optical room | Characterizing Focus Tunable Lens | Yesterday Ronic and I worked on the high
laser power measurements with the Vertical
set-up of the Focus Tunable Lens. We went |
|
|
368
|
Wed Oct 9 09:56:21 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | This morning, I wanted to test quickly
if the Smaract motors can be used in open
loop instead of closed loop or in piezo scan. |
|
|
369
|
Wed Oct 9 18:39:34 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | This afternoon, we scanned the optical
table vertically with the hexapod in asynchronous
mode to find its optimum position, looking |
|
|
374
|
Tue Oct 22 18:58:56 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | Today, after setting the locking parameters,
I got 80kW in the FPC for 33% amplifier ratio
after CEP tuning (Smaract CH2 ~ -423.5µm) |
|
|
375
|
Wed Oct 23 12:23:10 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | this morning, I did some walking procedure
and I got 82kW in the FPC with 33% amplifier
ratio (after CEP optimization too). |
|
|
376
|
Fri Nov 8 15:23:11 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | this morning, I did some walking procedure
and CEP alignment to get ~80kW in the FPC
with 33% amplifier ratio. |
|
|
377
|
Tue Nov 19 17:37:55 2024 |
Ronic Chiche | Under Process | info | lasers and optics | software | ThomX igloo | Optimizing lock parameters for stable X-ray production | the RF frequency is now 500.1003MHz which
is equivalent (if divided by 15) to 33.34002MHz.
the frequency has to be changed |
|
|
382
|
Fri Nov 22 10:23:33 2024 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | the RF frequency changed from 500.1003MHz
to 500.0913MHz => it reduced by 9kHz @
500MHz which is equivalent to 600Hz @ 33MHz |
|
|
383
|
Tue Nov 26 18:00:14 2024 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | at the begining of the day, we started
to get ~81kW in the FPC for 33% amplifier
ratio and after ~1h, we got 84kW after CEP |
|
|
384
|
Wed Dec 4 12:26:03 2024 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | today with Alice, we planned to do a long
run with ~80kW in the FPC to check if the
lock problems are coming from the interaction |
|
|
385
|
Wed Dec 4 17:11:50 2024 |
Ronic Chiche | Under Process | report | mechanics | lasers and optics | detectors and electronics | ThomX igloo | day by day run for X-ray production | we observed that :
- the MOT.03 motor always exhibits
some perturbations on the transmitted, reflected |
|