| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
278
|
Fri Nov 10 09:51:22 2023 |
Ronic Chiche | Fixed | report | mechanics | lasers and optics | ThomX igloo | M4 motor using icepap controller and jive/Atkpanel IHM | Kevin moved the M4 mirror controller from
the ISP controller to some ICEPAP controller.
the IHM to access this ICEPAP controller |
|
|
282
|
Tue Nov 14 11:33:45 2023 |
Ronic Chiche | Fixed | report | mechanics | lasers and optics | ThomX igloo | M4 motor using icepap controller and jive/Atkpanel IHM | one problem is the FP-cavity/laser lock
loss when one moves a FP-cavity motor.
with acceleration = 0.01 units/s² |
|
|
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) |
|
|
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. |
|
|
289
|
Fri Nov 24 12:56:39 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser cavity temperature/pressure sensitivity | laser cavity :
when one decreases the laser motor
position, the laser repetition rate |
|
|
290
|
Fri Nov 24 18:16:37 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser cavity temperature/pressure sensitivity | Now, I placed a temperature probe stuck on
the laser housing itself.
fig. 1 |
|
|
291
|
Fri Nov 24 18:47:25 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser cavity temperature/pressure sensitivity | the last thing we did with Daniele, is
to start/stop the airflow on top of the housing
(closed) to see a possible pressure effect |
|
|
292
|
Tue Nov 28 10:24:47 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | ThomX igloo | Laser cavity temperature/pressure sensitivity | today, I swapped the 500MHz RF reference
oscillator for a Siglent 500MHz DDS oscillator.
see the attached plot : the |
|
|
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 |
|
|
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" |
|
|
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 |
|
|
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 |
|
|
270
|
Fri Sep 22 11:30:28 2023 |
Daniele Nutarelli | Fixed | report | lasers and optics | Optical room | Laser FP operation | This morning FP Laser was operating well
locked at 30 KWatts in stable vay.
There are some fluctuations due |
|
|
464
|
Mon Feb 2 15:29:45 2026 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | Laser Amplifier used at 70% | today, I installed a laser dump just before
the telescope to avoid any high power (50W
instead of 17W usually) issue in the injection |
|
|
276
|
Thu Nov 9 17:02:26 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Laser / FP-cavity "day by day" locking | today, we locked the FP cavity at ~50kW
with 30% laser amplifier ratio (16W) during
almost all the day (from 10am to 4pm) |
|
|
279
|
Fri Nov 10 12:37:42 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Laser / FP-cavity "day by day" locking | as the temperature is back to a normal
value ~ 20.8°C, the injected power to
the amplifier (PD_IN in the Alphanov software) |
|
|
280
|
Tue Nov 14 10:35:16 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Laser / FP-cavity "day by day" locking | temperature since we moved to temperature
probe (jump at the beginning of the plot)
below the ring on a metallic base. |
|
|
284
|
Thu Nov 16 17:48:29 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Laser / FP-cavity "day by day" locking | temperature @ 22.3°C
today, all the PC applications
were closed except the web browser. |
|
|
285
|
Fri Nov 17 11:44:35 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Laser / FP-cavity "day by day" locking | temperature @ 21.9°C
48.5kW inside CFP for 30% amplifier
ratio |
|