| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14248
|
Fri Oct 12 20:20:29 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | I ran the script for measuring arm-loss
and calculated rough Y-arm round trip loss
temporally. The result was 89.6ppm. (The |
|
|
14251
|
Sat Oct 13 20:11:10 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements |
Quote:
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|
14254
|
Mon Oct 15 10:32:13 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | I used these values for measuring armloss:
Transmissivitity of ITM
= 1.384e-2 * (1 +/- 1e-2)
Transmissivitity |
|
|
14255
|
Mon Oct 15 12:52:54 2018 |
yuki | Update | Computer Scripts / Programs | additional comments |
Quote:
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14257
|
Mon Oct 15 20:11:56 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | Final Procedure Report for Green Locking
in YARM:
Purpose |
|
|
14258
|
Tue Oct 16 00:44:29 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | The scripts for measuring armloss are in
the directory "/opt/rtcds/caltech/c1/scripts/lossmap_scripts/armloss_scope".
armloss_derefl_asdcpd_scope.py: |
|
|
14260
|
Wed Oct 17 20:46:24 2018 |
yuki | Configuration | ASC | Y end table upgrade plan | To do for Green Locking in YARM:
The auto-alignment servo should
be completed. This servo requires many parameters |
|
|
14280
|
Wed Nov 7 05:16:16 2018 |
yuki | Update | Computer Scripts / Programs | arm loss measuremenents | Please check your data file and compare
with those Johannes made last year.
I think the power in your data file may have |
|
|
12825
|
Mon Feb 13 17:19:41 2017 |
yinzi | Configuration | | configuring ethernet for raspberry pi | Gautam and I were able to get the Raspberry
Pi up and running today, including being
able to ssh into it from the control room. |
|
|
14825
|
Fri Aug 2 17:07:33 2019 |
yehonathan, gautam | Update | Loss Measurement | | We run a loss measurement on the Y arm
with 50 repetitions. |
|
|
14816
|
Mon Jul 29 19:08:55 2019 |
yehonathan | Update | Loss Measurement | Reviving loss measurement by reflection | 1. X arm is totally misaligned in order
to measure the Y arm loss using the reflection
method. Each measurement round consists of |
|
|
14827
|
Mon Aug 5 14:47:36 2019 |
yehonathan | Update | Loss Measurement | | Summary:
I analyze the 100 reps loss measurement
of the Y arm using the AnalyzeLossData.ipynb |
|
|
Draft
|
Mon Aug 5 16:28:41 2019 |
yehonathan | Update | Loss Measurement | what is going on with the loss measurements ? | We hypothesize that the systematic error
in the loss measurement can come from the
fact that the requirement on the alignment |
|
|
14830
|
Mon Aug 5 17:36:04 2019 |
yehonathan | Update | Loss Measurement | | We check for unexpected drifts in the PD
reading (clipping and such). We put a pickoff
mirror where the PD used to be and place |
|
|
14831
|
Tue Aug 6 14:12:02 2019 |
yehonathan | Update | Computers | making rossa great again | cdsutils is not working on rossa.
Import cdsutils produces this error:
In [2]: import cdsutils |
|
|
14834
|
Tue Aug 6 16:44:50 2019 |
yehonathan | Update | Loss Measurement | | I grab 2 hours of the PD measurements using
dlData_simple.ipynb in the misaligned state.
I get pretty much a normally distributed |
|
|
15116
|
Fri Jan 10 19:48:46 2020 |
yehonathan | Update | PSL | Assembly underway for c1psl upgrade | {Yehonathan, Jon}
I finished pre-wiring the PSL chassis.
I mounted the Acromags on the DIN rails and |
|
|
15118
|
Mon Jan 13 16:05:18 2020 |
yehonathan | Update | PSL | Assembly underway for c1psl upgrade | {Yehonathan, Jon}
I configured the Acromag channels
according to the Slow |
|
|
15120
|
Tue Jan 14 17:16:43 2020 |
yehonathan | Update | PSL | Assembly underway for c1psl upgrade | {Yehonathan, Jon}
I isolated a BIO Acromag completely
from the chassis and powered it up. The inverted |
|
|
15262
|
Tue Mar 10 14:30:16 2020 |
yehonathan | Update | SUS | | ETMX was grossly misaligned.
I re-aligned it and the X arm now
locks. |
|
|
15263
|
Tue Mar 10 19:58:16 2020 |
yehonathan | Update | SUS | | I returned the triggering threshold to
normal values (5/3).
|
|
|
15614
|
Tue Oct 6 07:37:20 2020 |
yehonathan | Update | Wiki | New TIS measurements of 40m Optics | LiYuan has kindly done some Total Integrating
Sphere (TIS) measurements on ITMU01 and ITMU02.
A summary of the measurement is attached. |
|
|
15788
|
Tue Feb 2 17:09:17 2021 |
yehonathan | Update | BHD | SOS assembly | I set up a working area on the table next
to the south flow bench (see attachment).
I also brought in a rolling table for some |
|
|
15816
|
Thu Feb 18 15:15:12 2021 |
yehonathan | Update | SUS | OSEM testing for SOSs | I am setting up a testing rig for the OSEMs
we recently obtained. I found the schematic
for the OSEM assembly from which the pin |
|
|
15837
|
Wed Feb 24 10:09:16 2021 |
yehonathan | Update | SUS | OSEM testing for SOSs | Yes, my phone camera mirrored the image.
Sorry for the confusion.
I see you already uploaded the |
|
|
16062
|
Wed Apr 21 11:09:57 2021 |
yehonathan | Update | PSL | Laser amplifier | I went to the TCS lab to take a look at
the chillers lying around. I spotted two
chillers: |
|
|
16253
|
Wed Jul 21 18:08:35 2021 |
yehonathan | Update | Loss Measurement | Loss measurement | {Gautam, Yehonathan, Anchal, Paco}
We prepared for the loss measurement
using DC reflection method. We did the following |
|
|
16371
|
Fri Oct 1 14:25:27 2021 |
yehonathan | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | {Paco, Yehonathan, Hang}
We measured the sensing PRMI sensing
matrix. Attachment 1 shows the results, the |
|
|
16779
|
Thu Apr 14 11:52:57 2022 |
yehonathan | Summary | BHD | Part IIa of BHR upgrade - POY11 debugging | {JC, Paco, Yehonathan, Ian}
POY lens was moved to infront of
the POY steering mirror to make the POU beam |
|
|
16799
|
Thu Apr 21 18:18:42 2022 |
yehonathan | Update | BHD | POX Alignment | {Yehonathan, Paco}
BS, ITMX and ETMX were aligned
to get flashing in the X arm. |
|
|
17041
|
Thu Jul 28 13:09:28 2022 |
yehonathan | Update | BHD | Mode matching considerations | The LO beam was found to have a power of
60uW, 10% of the power expected. We are pretty
sure about the expectation because the AS |
|
|
17146
|
Tue Sep 20 15:40:07 2022 |
yehonathan | Update | BHD | Trying doing AC lock | We resume the LO phase locking work. MICH
was locked with an offset of 80 cts. LO and
AS beams were aligned to maximize the BHD |
|
|
17338
|
Tue Dec 6 09:39:22 2022 |
yehonathan | Update | CDS | Another CDS crash | Around 9:30 we noticed IMC going out of
lock with MC1 swinging hard. It seems like
the coil output shut down. |
|
|
17343
|
Tue Dec 6 17:12:23 2022 |
yehonathan | Summary | BHD | LO phase control using audio (MICH and AS1) + RF | {Yuta, Yehonathan}
Today we lock LO phase using audio+RF
method in two variants: AS1+RF and MICH(BS)+RF. |
|
|
17418
|
Wed Jan 25 10:02:47 2023 |
yehonathan | Update | | Earthquake, MC3 watchdog tripped | We came this morning and noticed the FSS_FAST
channel was moving very rapidly. Short inspection
showed that MC3 watchdog got tripped. After |
|
|
14193
|
Wed Sep 5 10:59:23 2018 |
wgautam | Update | CDS | CDS status update | Rolf came by today morning. For now, we've
restarted the FE machine and the expansion
chassis (note that the correct order in which |
|
|
6
|
Sat Oct 20 11:54:13 2007 |
waldman | Other | OMC | OMC and OMC-SUS work | [Rich, Chub, Pinkesh, Chris, Sam]
Friday the 18th was a busy day in OMC land. |
|
|
14
|
Thu Oct 25 17:52:45 2007 |
waldman | Other | OMC | OMCs with QPDs | [Rich, Chub, Pinkesh, Sam]
Yesterday we got the QPD, OTAS, and PZT cabling |
|
|
16
|
Thu Oct 25 23:35:36 2007 |
waldman | Other | OMC | Hang the OMC! | [Pinkesh, Sam]
We tried, convicted and hung the OMC today. |
|
|
19
|
Fri Oct 26 17:34:43 2007 |
waldman | Other | OMC | OMC + earthquake stops |
[Chub, chris, Pinkesh, Sam]
|
|
|
20
|
Fri Oct 26 21:48:40 2007 |
waldman | Configuration | OMC | Fiber to 056 | I set up a 700 mW NPRO in Rana's lab and launched
it onto a 50m fiber. I got a few mW onto
the fiber, enough to see with a card before |
|
|
21
|
Sat Oct 27 19:00:44 2007 |
waldman | Configuration | OMC | Hanging, locked OMC with REFL extracted. | I got the OMC locked to the fiber output today.
It was much more difficult than I expected
and I spent about 30 minutes or so flailing |
|
|
25
|
Mon Oct 29 11:07:22 2007 |
waldman | Software Installation | OMC | Software install on OMS | [Alex, Sam]
We spent a little time this morning working |
|
|
26
|
Mon Oct 29 12:20:15 2007 |
waldman | Configuration | OMC | Changed OMS filters | I changed the OMS configuration so that some
of the OMC-SUS LED channels go to a breakout
box so that we can input the PDH error signal. |
|
|
27
|
Mon Oct 29 23:10:05 2007 |
waldman | Configuration | OMC | Lost in DAQspace | [Pinkesh, Sam]
In setting up a Digital based control of |
|
|
37
|
Wed Oct 31 09:45:28 2007 |
waldman | Other | OMC | Resolution to DAQland saga | [Jay, Sam]
We did a rough accounting for the linear |
|
|
42
|
Wed Oct 31 23:55:17 2007 |
waldman | Other | OMC | QPD tests | The 4 QPDs for the OMC have been installed
in the 056 at the test setup. All 4 QPDs
work and have medm screens located under |
|
|
43
|
Thu Nov 1 01:28:04 2007 |
waldman | Other | OMC | First digital lock of OMC | [Pinkesh, Sam]
We locked a fiber based NPRO to the suspended |
|
|
58
|
Fri Nov 2 12:18:47 2007 |
waldman | Summary | OMC | Locked OMC with DCPD | [Rich, Sam]
We locked the OMC and look at the signal |
|
|
59
|
Sat Nov 3 16:20:43 2007 |
waldman | Summary | OMC | A good day's work |
I followed up yesterday's test of the PZT
with a whole mess of characterizations of |
6x |