| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
72
|
Thu Oct 10 17:51:26 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | Optical room | First Lock with 2nd satge of amplifier : Finesse issue ? | 1st lock today with the second stage of
the amplifier.
~ 300mW of injected power (but which |
|
|
73
|
Thu Oct 10 18:03:10 2019 |
Ronic Chiche | Fixed | issue | mechanics | Optical room | First Lock with 2nd satge of amplifier : Motor issue ? | Global locking almost clean : tranmission
and reflection are quite noiseless except
the peaks at every 500ms. |
|
|
74
|
Fri Oct 11 18:42:32 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | Optical room | First Lock with 2nd satge of amplifier : Finesse issue ? | First of all, we used and optical spectrometer
to determine which proportion of pump and
signal is in the injected beam. |
|
|
81
|
Fri Nov 22 17:56:56 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | Optical room | 30Hz noise issue | since some days, we observe the cavity
is difficult to lock and a strange 30Hz noise
has appeared on the PZT signal which normally |
|
|
82
|
Tue Nov 26 16:11:52 2019 |
Ronic Chiche | Fixed | issue | mechanics | Optical room | First Lock with 2nd satge of amplifier : Motor issue ? | The 500 ms noise disapeared. We had to
disable the "power save" mode of
the smaract translation stage. AND turn OFF |
|
|
83
|
Tue Nov 26 16:21:27 2019 |
Loïc Amoudry | Fixed | issue | vacuum | Optical room | Pneumatic valves | The pneumatic valves are now plugged on
the university air network.
The air valve is fully openned for |
|
|
84
|
Tue Nov 26 16:35:39 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | Optical room | 30Hz noise issue | The 30 Hz noise issue has been solved !
It came from translation stage
of P1 and/or P4. |
|
|
98
|
Fri Feb 28 09:20:37 2020 |
Ronic Chiche | Not Fixed | issue | lasers and optics | Optical room | Amplifier laser diodes issue | This is a long time issue for the ThomX
amplifier : on the 4 pumping diodes available,
the 1st diode has a higher temperature than |
|
|
111
|
Thu Jan 13 17:08:56 2022 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | Optical room | Alignment procedure | Picture of the installed mirrors inside
the FP cavity.
To install an Iris instead of a |
|
|
149
|
Tue Apr 26 11:12:58 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier compressor's CVBG thermal images | last Friday with Manar, we took some thermal
images of the Alpnavov compressor box.
I post a small document to summarize |
|
|
150
|
Tue Apr 26 11:15:23 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier compressor's CVBG thermal images | last Friday with Manar, we took some thermal
images of the Alpnavov compressor box.
I post a small document to summarize |
|
|
170
|
Wed Nov 9 13:03:50 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier issue | on Monday morning 7/11, we tried to restart
the Alphanov amplifier which was not turned
on since end of april 2022, but it didn't |
|
|
171
|
Wed Nov 9 14:49:52 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier issue | I just tested the fuse inside the black
ON/OFF switch on the rear panel => it
is OK ! :-( |
|
|
172
|
Thu Dec 1 13:51:05 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier issue | The laser amplifier controller has been
sent yesterday and received today by Alphannov.
they should do the assessment quickly... |
|
|
173
|
Tue Dec 6 11:47:36 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier issue | Today, I did a Teams meeting with Guillaume.
He didn't see any problem with
the controller. |
|
|
174
|
Thu Dec 15 11:41:36 2022 |
Ronic Chiche | Fixed | issue | lasers and optics | ThomX igloo | Alphanov amplifier issue | Yesterday, we received the controller back
from Alphanov
and I tested it immediately in the |
|
|
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 |
|
|
232
|
Wed Aug 2 13:07:59 2023 |
Ronic Chiche | Not Fixed | issue | detectors and electronics | ThomX igloo | ThomX ring injection kicker noise => USB communication issue with Alphanov amplifier | several times already, when the electrons
ring injection kicker is running @10Hz, we
observed peaks at the same frequency on reflected |
|
|
233
|
Wed Aug 2 13:13:52 2023 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | work with HV voltage on the Laselock | presently, the voltage on the laser PZT
is 0-10V, but during the several runs we
did, this voltage is too low to compensate |
|
|
234
|
Tue Sep 5 17:59:24 2023 |
Ronic Chiche | Fixed | issue | lasers and optics | detectors and electronics | ThomX igloo | work with HV voltage on the Laselock | Yesterday, I checked the 2 output HV channels
of the LaseLock : they work properly but
the noise is bigger than the low voltage |
|