| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
193
|
Mon Mar 13 14:02:59 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | CW laser installation and cleaning | This morning with Ronic , in preparation
for the mirror installation, we removed additional
mechanics and cables from the table. |
|
|
198
|
Fri Mar 17 18:54:19 2023 |
Manar Amer | Fixed | report | lasers and optics | Optical room | New Mirrors from LMA _ Images | Today we tested a mirror from one patch
image is for the front face of
the mirror |
|
|
200
|
Mon Mar 20 17:23:09 2023 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | 33MHz laser SN2439 back to Orsay | As the general local network for the FP-cavity
devices is 192.168.xxx.xxx, I changed the
IP adress of the smaract laser motors (Frep |
|
|
213
|
Thu Jun 1 10:31:45 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | the last tries to lock the 33MHz + amplifier
to the 30k Finesse FP-cavity were unsuccessful.
during a laser Frep scan using |
|
|
214
|
Thu Jun 1 18:15:04 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | finding the right modulation/demodulation
PDH phase is very difficult on the main resonance
because the we get non stationnary signals |
|
|
217
|
Tue Jun 6 15:52:59 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | today with Daniele, we locked easily (but
with a noisy lock) on the secundary resonance
and we tried to lock on the main resonance |
|
|
219
|
Thu Jun 8 11:12:20 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | After removing the 2 generators from the
optical table, the lock is much more stable
and now, it is possible to lock on the main |
|
|
222
|
Tue Jun 20 18:45:10 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | this morning, I tested the laser+amplifier
@ 30% lock on the FP cavity with and without
Smaract motors. |
|
|
223
|
Tue Jun 20 19:08:17 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | I checked with the Matlab code below the
CEP detuning effect (2nm sech² spectrum...
not exactly the same as in ThomX) |
|
|
224
|
Thu Jun 22 20:20:03 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | we checked yesterday morning the real input
power @ 30% for the amp => it is 16W in
agreement with the previously measured values |
|
|
225
|
Wed Jun 28 19:01:03 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | First X rays and FP-cavity mode and electron beam waists size @ IP | on friday 23/06 afternoon, after scanning
the hexapod z-axis, we observed a cut of
the power stored in the FP-cavity (with constant |
|
|
226
|
Wed Jun 28 19:07:42 2023 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Incoming laser beam power issue | today, we observed on the photodiode used
in reflexion of the cavity, that its voltage
level stops increasing after 50% of power |
|
|
227
|
Wed Jul 26 14:49:41 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | Today, we locked the cavity with input
power @ 30% for the amp => we got 40kW
with only 30% of coupling (and a bad lock |
|
|
235
|
Tue Sep 5 18:08:39 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | Equipments shutdown | on the August 30rd and 31th, a global power
shutdown was forseen for ThomX.
to prevent damage on equipments, |
|
|
236
|
Tue Sep 5 18:21:12 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | FP-cavity FSR shift | today, to match the ring frequency at 500.25MHz
(15th laser harmonic), we did a frequency
shift on the laser using the Smaract motors |
|
|
238
|
Wed Sep 6 20:09:56 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | Smaract controller remplacement | previously, we were using a spare Smaract
MCS controller to drive the Onefive linear
stages (without -LV -low vibration- |
|
|
239
|
Thu Sep 7 18:51:43 2023 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Onefive laser modelock and Smaract CEP controller | today, during an attempt in improving the
CEP with the Smaract controller CH2, we lost
the laser modelock. |
|
|
244
|
Fri Sep 8 19:45:56 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | redoing the PDH error signal scheme with
discrete components is more flexible and
it is easier to check the signal/noise ratio. |
|
|
262
|
Fri Sep 15 19:13:44 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | drift calculation for the SMA100A | the goal is to estimate what could be the
frequency drift at 500MHz for the SMA100A:
see phase noise datasheet in attachement |
|
|
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 |
|