| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3891
|
Thu Nov 11 04:32:53 2010 |
yuta | Summary | CDS | found poor contact of DAC cable, previous A2L results were wrong | (Koji, Jenne, Yuta)
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|
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3892
|
Thu Nov 11 05:56:04 2010 |
yuta | Summary | IOO | setting up temporary oplev for coil balancing of MCs | (Suresh, Yuta)
Background: |
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|
3905
|
Fri Nov 12 06:10:24 2010 |
yuta | Update | IOO | MC aligned (without coil balancing) | Background:
Last night, we found that one
of DAC channels are poorly connected, so |
|
|
3912
|
Sat Nov 13 15:53:05 2010 |
yuta | Update | CDS | diagonalization of MC input matrix | Motivation:
MC is aligned from the A2L
measurement, but to do the beam centering |
|
|
3929
|
Tue Nov 16 03:33:22 2010 |
yuta | Update | IOO | aligned Faraday, beam reached SM just before PRM | (Koji, Yuta)
|
|
|
3937
|
Wed Nov 17 02:53:41 2010 |
yuta | Update | IOO | placed new PRM to BS table | (Kiwamu, Yuta)
Background: |
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|
3941
|
Wed Nov 17 20:44:59 2010 |
yuta | Summary | CDS | no QPD channels on c1sus machine today | (Joe, Suresh, Yuta)
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|
|
3943
|
Thu Nov 18 00:40:31 2010 |
yuta | Update | IOO | PRM reflected beam reached AP table | (Kiwamu, Yuta)
Summary: |
|
|
3948
|
Thu Nov 18 16:32:21 2010 |
yuta | Summary | CDS | current damping status for all optics c1sus handles | Summary:
I set Q-values for each
ringdown of PRM, BS, ITMX, ITMY, MC1, MC2, |
|
|
3957
|
Fri Nov 19 17:12:22 2010 |
yuta | Update | CDS | ETMX damped, but with weird TO_COIL matrix | Background:
c1iscex machine is currently
being setup and RT model c1scx is running. |
|
|
3959
|
Sat Nov 20 01:58:56 2010 |
yuta | HowTo | CDS | editting RT models and MEDM screens | (Suresh, Yuta)
If you come up with a good idea and |
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|
3960
|
Sat Nov 20 02:25:30 2010 |
yuta | Update | CDS | 2 LOCKINs for suspension models | (Suresh, Koji, Yuta)
Background: |
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|
3961
|
Sat Nov 20 03:37:11 2010 |
yuta | Summary | CDS | CDS time delay measurement - the ripple | (Koji, Joe, Yuta)
Motivation: |
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|
6654
|
Mon May 21 21:27:39 2012 |
yuta | Update | CDS | MEDM suspension screens using macro | Background:
We need more organized MEDM
screens. Let's use macro. |
|
|
6663
|
Tue May 22 20:46:38 2012 |
yuta | Update | CDS | MEDM suspension screens using macro | I fixed the problem Jamie pointed out in
elog #6657
and #6659. |
|
|
6677
|
Thu May 24 16:13:05 2012 |
yuta | Update | Computers | ASS scripts on new ubuntu machines | [Den, Yuta]
Background: |
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|
6709
|
Tue May 29 21:05:30 2012 |
yuta | Update | IOO | PMC, MC alignment are shit |
|
|
|
6713
|
Wed May 30 01:35:15 2012 |
yuta | Update | Green Locking | aligned Y arm green beam | [Jenne, Yuta]
We aligned the Y arm for IR (C1:LSC-TRY_OUT
is now ~ 0.9), and aligned the green beam |
|
|
6715
|
Wed May 30 15:51:22 2012 |
yuta | Update | IOO | MC beam spot oscillation | [Koji, Suresh, Jenne, Yuta]
Background:
We noticed that the beam spots |
|
|
6718
|
Wed May 30 19:27:38 2012 |
yuta | Update | IOO | MC beam spot oscillation | [Koji, Yuta]
We found that C1:SUS-MC{1,2,3}_TO_COIL_3_4_GAIN |
|
|
6724
|
Thu May 31 01:27:16 2012 |
yuta | Update | Green Locking | PSL and Y arm green beams aligned | [Jenne, Yuta]
We aligned the PSL green optics so
that the PSL green beam and Y arm green beam |
|
|
6725
|
Thu May 31 01:36:17 2012 |
yuta | Update | Green Locking | GREEN_TRX/GREEN_TRY PDs | I did the cabling for monitoring DC transmission
of the green beam from the end table.
The two PDs are called GREEN TRX and |
|
|
6726
|
Thu May 31 02:27:24 2012 |
yuta | Update | IOO | script for reliefing MC WFS | I wrote a simple script for reliefing MC
WFS servo. The script is located at /opt/rtcds/caltech/c1/scripts/MC/reliefMCWFS. |
|
|
6727
|
Thu May 31 04:03:17 2012 |
yuta | Update | IOO | script for MC beam spot measurement | I wrote a wrapping script for measuring
MC beam spot. We had to run several scripts
for the measurement (see elog #6688), |
|
|
6731
|
Thu May 31 16:19:07 2012 |
yuta | Update | Green Locking | temperature setting for PSL doubling crystal | I fixed the temperature control of the
oven for the PSL doubling crystal.
The PID settings were not good, and |
|
|
6746
|
Sat Jun 2 03:19:37 2012 |
yuta | Update | Green Locking | Y green beat note found? - too small | Summary:
I tried to find Y arm green
beat in order to do the mode scan. |
|
|
6757
|
Tue Jun 5 21:09:40 2012 |
yuta | Update | Computer Scripts / Programs | hacked ezca tools | Currently, ezca tools are flakey and fails
too much.
So, I hacked ezca tools just like |
|
|
6763
|
Wed Jun 6 02:28:02 2012 |
yuta | Update | Green Locking | tried to see Yarm length change with weak beat note | [Jenne, Yuta]
Summary: |
|
|
6767
|
Wed Jun 6 15:16:00 2012 |
yuta | Update | IOO | MC WFS offsets adjusted | MC reflection (C1:IOO-MC_RFPD_INMON) got
worse when WFS servos were on. After aligning
MC optics, it will be ~0.5 but if I turned |
|
|
6771
|
Wed Jun 6 21:11:45 2012 |
yuta | Update | Green Locking | improved Y arm green alignment | Summary:
Y arm green transmission to
the PSL table improved from ~ 20 uW to 61 |
|
|
6775
|
Thu Jun 7 01:46:05 2012 |
yuta | Summary | Green Locking | Y green beat - found it!! | I found the big big Y green beat. Details
will be posted later.
|
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|
6776
|
Thu Jun 7 02:25:27 2012 |
yuta | Update | Green Locking | improved Y arm green alignment - even more | [Koji, Yuta]
Summary: |
|
|
6777
|
Thu Jun 7 02:59:31 2012 |
yuta | Update | Green Locking | Y green beat - found it!! | Summary:
I found the big green beat
note for the Y arm. The alignment of the |
|
|
6778
|
Thu Jun 7 03:37:26 2012 |
yuta | Update | CDS | mx_stream restarted on c1lsc, c1ioo | c1lsc and c1ioo computers had FB net statuses
all red. So, I restarted mx_stream on each
computer. |
|
|
6779
|
Thu Jun 7 05:39:41 2012 |
yuta | Update | Green Locking | coarsely stabilized Y arm length with ALS | I coarsely stabilized Y arm length to off
resonance point for IR using ALS.
Currently, ASL servo loop is unstable |
|
|
6788
|
Thu Jun 7 18:46:13 2012 |
yuta | Update | SUS | PRM oplev centered | PRM oplev beam was not hitting on the QPD
since Jun 1, so I centered it. I reverted
the oplev servo gains and now oplev servo |
|
|
6789
|
Fri Jun 8 15:08:27 2012 |
yuta | Update | Green Locking | aligned/mode-matched Y green beat setup | Laser temperature settings for Y arm green
work today are;
|
|
|
6794
|
Mon Jun 11 21:50:08 2012 |
yuta | Update | Green Locking | beatbox looks OK | Summary:
We need I-Q frequency deiscriminator
to control the arm length fine and continuously. |
|
|
6798
|
Tue Jun 12 01:58:33 2012 |
yuta | Update | Green Locking | aligned Y arm to Y end green | [Jenne, Yuta]
We aligned Y arm to the Y end green |
|
|
6808
|
Tue Jun 12 20:35:46 2012 |
yuta | Update | Green Locking | c1gcv recompiled | [Jamie, Yuta]
We recompiled c1gcv because the order |
|
|
6809
|
Tue Jun 12 23:18:18 2012 |
yuta | Update | Green Locking | I-Q signals for the beat | [Mengyao, Yuta]
|
|
|
6810
|
Wed Jun 13 02:11:59 2012 |
yuta | Update | Green Locking | my first modescan (sort of) | I stabilized Y arm length by using only
I phase coarse signal from the beat(C1:ALS-BEATY_COARSE_I_ERR).
I sweeped the arm length by injecting |
|
|
6812
|
Wed Jun 13 03:03:38 2012 |
yuta | Update | Green Locking | my first modescan (sort of) | Linear range df of the delay line technique
is about df ~ c/(2D). So, the linear range
for the fine signal(delay line length D=30m) |
|
|
6815
|
Wed Jun 13 17:39:13 2012 |
yuta | Update | Green Locking | calibrating the beatbox | [Jenne, Yuta]
We put 0 dBm sine wave to the RF input |
|
|
6816
|
Thu Jun 14 01:36:34 2012 |
yuta | Update | Green Locking | can't scan Y arm for 1FSR | [Jenne, Koji, Yuta]
We tried to scan of the Y arm but |
|
|
6817
|
Thu Jun 14 04:53:39 2012 |
yuta | Summary | Green Locking | designing ALS loop for mode scan | [[Requirement]]
Arm cavity FWHM for IR is
|
|
|
6818
|
Thu Jun 14 21:37:37 2012 |
yuta | Update | Green Locking | succeeded in 1FSR mode scan | [Jenne, Yuta]
We couldn't scan the Y arm for 1FSR |
|
|
6819
|
Fri Jun 15 00:50:54 2012 |
yuta | Update | Green Locking | scanned Y arm for 5FSR | I scanned Y arm for 5FSR (below).
I could done this after I put a whitening
filter. |
|
|
6821
|
Fri Jun 15 13:33:39 2012 |
yuta | Update | Green Locking | ADC noise contribution to ALS | ADC noise is not a limiting noise source
in a current ALS setup.
|
|
|
6822
|
Sat Jun 16 01:03:21 2012 |
yuta | Update | Green Locking | used longer delay line for mode scan | [Mengyao, Yuta]
Last night, I used 1.5 m delay line |
|