| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 |
|
|
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 |
|
|
249
|
Thu Jul 27 18:47:57 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | pour préparer le lock cavité-anneau,
j'ai un setup de lock en salle optique
entre le laser OneFive 133MHz et un synthé |
|
|
250
|
Fri Jul 28 13:19:22 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz |
régler le problème
1:
Kevin m'a apporté un déphaseur |
|
|
251
|
Mon Jul 31 19:17:40 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | Today, I installed a DB9-DB9 female-male
cable on the PZT connector of the FP-cavity.
the PZT is connected between pins |
|
|
252
|
Wed Aug 2 11:38:20 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | Today, I connected the BNC-DB9 female prolongator
cable to the FP-cavity PZT cable (DB9-DB9)
and to the channel B of the Laselock. |
|
|
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 |
|
|
237
|
Wed Sep 6 19:57:48 2023 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | Fast feedback loop between laser and FP cavity | today, we tried to lock the FP cavity with
the Smaract motors ON (with option -LV).
we know the Smaract controllers produce |
|
|
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- |
|
|
240
|
Thu Sep 7 19:23:36 2023 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | Fast feedback loop between laser and FP cavity | today, after the several unsuccessful attempt
yesterday to get an improvement in the lock,
we decided to "rebuild" |
|
|
241
|
Fri Sep 8 12:43:04 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Removing high order modes | this morning we locked the laser and the
FP-cavity with ~ 40kW => some HOM appeared
"randomly" depending on the power. |
|
|
242
|
Fri Sep 8 18:22:21 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Removing high order modes | here is the picture of the L-shape arm
and the inside of the vessel.
this image corresponds to the "zero" |
|
|
253
|
Fri Sep 8 19:35:36 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | this afternoon, I installed the frequency
detection scheme in the bunker :
- I changed the large reflected |
|
|
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. |
|
|
245
|
Tue Sep 12 14:28:36 2023 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Removing high order modes | yesterday with Daniele, we tried again
to move the arm horizontally and vertically
from the "zero position" to have |
|
|
254
|
Tue Sep 12 17:58:41 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | this afternoon, I tried to lock the FP-cavity
on a local 500MHz synthesizer as a frequency
reference |
|
|
255
|
Wed Sep 13 12:24:14 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | this morning, I added a Thorlabs lowpass
filter at 1kHz after the mixer and a resistor
at the Laselock output to the FP-cavity PZT. |
|
|
256
|
Wed Sep 13 18:33:50 2023 |
Ronic Chiche | Fixed | info | detectors and electronics | Optical room | lock oscillateur 33MHz - synthé 500MHz | this afternoon, I firstly connected the
HV output of the Laselock to the FP-cavity
PZT : https://elog.lal.in2p3.fr/FPC/THOMX+commissioning/248 |
|