ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
8889
|
Mon Jul 22 16:30:31 2013 |
Koji | Update | General | Vent preparation | [Annalisa, Manasa, Jenne, Koji]
We are working on the vent preparation.
First of all, |
|
8895
|
Mon Jul 22 22:06:18 2013 |
Koji | Update | CDS | FE Web view was fixed | FE Web view was broken for a long time.
It was fixed now.
The problem was that path names were |
|
8896
|
Tue Jul 23 00:51:46 2013 |
Koji | Update | endtable upgrade | End table picture | The spot on the IPANG QPD was checked.
The spot is higher than the center and South
side of the lens. |
   |
8898
|
Tue Jul 23 03:10:57 2013 |
Koji | Update | General | Vent preparation - In progress | Centering
of the oplev beams: done
|
 |
8901
|
Tue Jul 23 04:22:03 2013 |
Koji | Update | General | Vent preparation - In progress | [Koji Jenne]
Low
power MC locking |
|
8905
|
Tue Jul 23 13:29:58 2013 |
Koji | Summary | General | | record of the initial state |
|
8906
|
Tue Jul 23 13:55:08 2013 |
Koji | Update | IOO | MC manually aligned | The MC was manually aligned. The spot positions
were measured and it is consistent with the
measurements done yesterday. |
 |
8908
|
Tue Jul 23 16:39:31 2013 |
Koji | Update | General | Full IFO alignment recovered | [Annnalisa Koji]
Full alignment of the IFO was recovered.
The arms were locked with the green beams |
|
8913
|
Tue Jul 23 21:32:43 2013 |
Koji | Update | IOO | Found the cause of mysterious MC motion | Thesedays
we were continuously annoyed by unELOGGED
activities of the interferometer. |
|
8918
|
Wed Jul 24 15:07:54 2013 |
Koji | Update | SUS | SR2 flipped | After the first flipping, X/Y arms were
aligned and locked. Then the ASS aligned
the arms. |
|
8921
|
Thu Jul 25 02:53:00 2013 |
Koji | Update | General | IFO Alignment after TT flipping - no progress | There was no progress tonight after Jenne
left.
I could not find any reasonable fringes |
|
8926
|
Fri Jul 26 13:39:30 2013 |
Koji | Update | ASC | POP QPD analysis | It was not actually easy to see from the
entry what signal was taken in what condition
but from the shape of the spectra |
|
8934
|
Mon Jul 29 16:15:13 2013 |
Koji | Update | VAC | AC removed | Prior to the access connector removal,
Manasa and I aligned the IFO mirrors.
The arms were locked and aligned by |
|
8936
|
Tue Jul 30 00:21:15 2013 |
Koji | Update | General | Vent progress | [Koji, Manasa, Sujan]
Tomorrow we'll make final checks |
|
8938
|
Tue Jul 30 13:41:35 2013 |
Koji | Update | General | ITMX oplev | I wonder what optics is causing the halo
on the oplev beam.
It this comes from any uncoated lens |
|
8968
|
Mon Aug 5 19:10:01 2013 |
Koji | Update | CDS | Choosing LO Amplitudes and Frequencies | - I suppose the green transmission paths
were thoroughly inspected and aligned in
prior to the measurement |
|
8975
|
Wed Aug 7 10:09:30 2013 |
Koji | Update | LSC | Arms locked in IR, aligned. IFO at nominal power | I have a concern about the SRM suspension.
The yaw alignment bias produces huge pitch
coupling. |
|
8977
|
Wed Aug 7 15:32:37 2013 |
Koji | Update | ASC | ASS setting up accelerated (slightly) | I moved bunch of ezcawrite from the ASS
Dither On script to a snapshot file.
This accelerated a half of the "up" |
|
8982
|
Wed Aug 7 22:18:43 2013 |
Koji | Update | ASC | ASS update | While Gautam is working on the Xarm green
ASS...
The EPICS monitor points for the |
|
8989
|
Thu Aug 8 21:25:36 2013 |
Koji | Update | General | Post-vent alignment cont'd | - IPANG aligned on the QPD. The beam seems
to be partially clipped in the chamber.
- Oplev of the IFO mirrors are aligned. |
|
8991
|
Fri Aug 9 21:05:28 2013 |
Koji | Update | SUS | fixed: SRM coils fine - problem with slow bias slider | Now the SRM Yaw bias in yaw is functional
without any strage behavior.
|
|
8992
|
Fri Aug 9 22:51:37 2013 |
Koji | Update | LSC | PRMI(sb) lock recovered | PRMI(sb) lock
was recovered |
|
8999
|
Mon Aug 12 17:30:03 2013 |
Koji | Update | ASC | PRCL ASS software in place | Why POPDC??? |
|
9007
|
Tue Aug 13 17:20:54 2013 |
Koji | Update | CDS | [Fixed] c1iscex needs help | c1x01 timing issue was solved. Now all
of the models on c1iscex are nicely running.
Symptons |
|
9009
|
Tue Aug 13 21:49:32 2013 |
Koji | Summary | General | Testing new AG4395A network analyzer | New AG4395, sn MY41101114 for West
Bridge Labs was delivered. For the test purpose
it is at the 40m now. |
|
9010
|
Tue Aug 13 22:21:12 2013 |
Koji | Summary | General | Minicircuit Filter TFs (AG4395A test) | As a part of the network analyzer test
in the previous entry, the transfer functions
of Mini-Circuits filters we have at the 40m |
   |
9012
|
Thu Aug 15 01:51:50 2013 |
Koji | Summary | General | RFM<->Dolphin bridge distributed to c1rfm and c1mcs | Since the RFM-Dolphin bridges for the ASX
model was added to the c1rfm model, c1rfm
kept timing-out from the single sample time |
|
9018
|
Fri Aug 16 13:25:50 2013 |
Koji | Update | ASS | ASX model/screen cleaning up | [Koji Manasa]
Yesterday we cleaned up the ASX model
and screens to have more straight forward |
|
9025
|
Mon Aug 19 09:36:32 2013 |
Koji | Update | Green Locking | Xend green aligned | [Rana Koji]
This is an elog about the activity
on Friday night. |
|
9032
|
Mon Aug 19 15:23:07 2013 |
Koji | Update | IOO | MC mirrors' ASC has non-zero inputs | [Jenne, Koji]
This disturbance in the MC ASC channels
were fixed. |
|
9035
|
Mon Aug 19 19:08:35 2013 |
Koji | Update | Green Locking | Xend green layout corrections | - An Aluminum mirror instead of 2"
unknown mirror for the pick-off for the rejected
beam from the green faraday isolator (Steve) |
|
9040
|
Tue Aug 20 11:41:30 2013 |
Koji | Update | LSC | REFL investigations | As I always tell everyone: Don't use a 10% reflector
which produce ghost beams. Use a 90% reflector. |
|
9048
|
Wed Aug 21 23:50:40 2013 |
Koji | Update | SUS | PRM SUS_LSC violin (FM5) set to correct frequency | [Jenne Koji]
It seems that the PRM violin mode
freqs shifted from 625-ish to 640Hz. |
|
9053
|
Thu Aug 22 13:20:54 2013 |
Koji | Update | LSC | DRMI Locked for 1+ minute!!!!!! | Don't go for a hacky solution. We want
to climb a staircase step by step.
Prepare an independent 110MHz demod |
|
9060
|
Sat Aug 24 00:11:07 2013 |
Koji | Update | LSC | DRMI Locked with improved lock streatches | Friday night |
|
9064
|
Mon Aug 26 19:13:38 2013 |
Koji | Update | LSC | LSCoffset script updated | What do you mean???
What is the effect of the anti-whitening
filter? |
|
9073
|
Tue Aug 27 18:58:52 2013 |
Koji | Configuration | Electronics | 110 MHz LO options | - Do we have an appropriate amplifier?
- True challenge could be to find
a feedthrough for the new port. (or to find |
|
9076
|
Tue Aug 27 20:43:34 2013 |
Koji | Configuration | CDS | front end IPC configuration | The reason we had the PCIe/RFM system was
to test this mixed configuration in prior
to the actual implementation at the sites. |
|
9116
|
Fri Sep 6 23:01:08 2013 |
Koji | Update | LSC | Stable DRMI lock was recovered from the impact on the RF system modification | Summary
|
  |
9124
|
Wed Sep 11 23:43:10 2013 |
Koji | Summary | Green Locking | ALS locking in both arms | What was the beat freq for each arm?
The HF noise level depends on the
frequency of the beat note. |
|
9189
|
Thu Oct 3 01:18:57 2013 |
Koji | HowTo | LSC | steps to full IFO | I vote on PRMI+1arm -> PRFPMI |
|
9251
|
Thu Oct 17 18:29:28 2013 |
Koji | Update | LSC | PRMI+2arm attempt (not really yet) | While Manasa, Jenne, and Masayuki are working
on the preparing the interferometer, I write
the elog for them. |
|
9256
|
Mon Oct 21 13:15:52 2013 |
Koji | Update | IOO | PMC aligned | PMC aligned. Trans 0.78 -> 0.83 |
|
9280
|
Thu Oct 24 15:19:58 2013 |
Koji | Update | LSC | PRMI + 2 ALS arms | > all of complications
of handing off |
|
9284
|
Thu Oct 24 21:46:18 2013 |
Koji | Update | Green Locking | ALS OFFSETTER calibration |
|
|
9327
|
Fri Nov 1 17:44:06 2013 |
Koji | Summary | LSC | Simulation of REFL_3f signal when the arms come in | Yes, the resonance of the 2nd-order sidebands
to the IFO screws up the 3f scheme.
2f (~22MHz) and 10f (~110MHz) are |
|
9340
|
Mon Nov 4 18:24:15 2013 |
Koji | Update | LSC | Thoughts on Transition to IR | You have the data. Why don't you
just calculate 1/SQRT(TRX)?
...yeah, you can calculate it but |
|
9363
|
Sat Nov 9 10:25:43 2013 |
Koji | Update | LSC | New Broadband PD for POP 22/110 | General Remarks on the BBPD
- To form the LC network: Use fixed |
|
9390
|
Fri Nov 15 09:27:58 2013 |
Koji | Update | IOO | WFS with beam dumps | Unfortunately this does not work. These
WFSs are not the detectors which we can move
freely. |
|
9394
|
Fri Nov 15 12:00:28 2013 |
Koji | Update | CDS | Can't talk to AUXEY? |
|
|