ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
8986
|
Thu Aug 8 11:18:46 2013 |
manasa | Update | Computer Scripts / Programs | Unused scripts in ASS moved | I was receiving missing path error when
I was trying to measure the MC spot positions.
Jenne pointed out that Koji had moved all |
|
9000
|
Mon Aug 12 21:27:03 2013 |
manasa | Update | CDS | c1iscex needs help | I started to modify the c1asx model to
reduce the RFM model from hitting its max
time. |
|
9008
|
Tue Aug 13 21:09:03 2013 |
manasa | Update | Green Locking | Arms ready for ALS | I aligned
both the X and Y end green to the arms.
The transmitted green were aligned |
|
9014
|
Thu Aug 15 12:30:17 2013 |
manasa | Update | Green Locking | Lost beat notes | [Koji, Nic, Manasa]
Update from last night.
Koji and I realigned the green optics |
|
9015
|
Thu Aug 15 19:05:07 2013 |
manasa | Update | Green Locking | ALS out of loop noise | Beat notes were recovered for both the
arms.
I locked the arms to IR using PDH |
|
9033
|
Mon Aug 19 16:18:56 2013 |
manasa | Update | Green Locking | Xend green aligned | ASX scripts for PZT dither have been fixed
appropriately. Script resides in |
|
9065
|
Mon Aug 26 19:31:22 2013 |
manasa | Update | SUS | PRM, ITMY watch dogs | PRM and ITMY were found with their watchdogs
shutdown this afternoon (cause unknown).
I re-engaged them. |
|
9066
|
Mon Aug 26 19:54:15 2013 |
manasa | Update | CDS | c1als model modified | I had made changes to the c1als model a
couple of weeks ago. I had removed all the
beat_coarse channels that had existed from |
|
9070
|
Tue Aug 27 15:44:08 2013 |
manasa | Update | CDS | Issues with ALS fixed | I figured out the problem with ALS from
yesterday. While the model was just fine,
the medm screens were not checked if they |
|
9079
|
Wed Aug 28 05:21:58 2013 |
manasa | Update | CDS | CDS svn commits not happening | I am responsible for missed
svn commits with als and asx. I have committed them. |
|
9080
|
Wed Aug 28 06:17:15 2013 |
manasa | Update | Computer Scripts / Programs | alias for MATLAB2010 | Although Matlab 2013 has not been causing
any visible trouble so far, it takes a while
to startup. |
|
9081
|
Wed Aug 28 06:26:28 2013 |
manasa | Update | Computer Scripts / Programs | ASS req and snap files edited | [From yesterday] ASS for X arm was behaving
slightly funny over the last couple of days.
ASS could not correct the BS misalignment. |
|
9082
|
Wed Aug 28 07:33:51 2013 |
manasa | Update | LSC | MICH locking | I wanted to measure the OLTF of MICH.
What I did:
1. Ran LSC offsets script to zero |
|
9102
|
Wed Sep 4 16:08:22 2013 |
manasa | Update | SUS | MC2 tickler turned OFF | [Jenne, Manasa]
While we were trying to relock the
MC after Jenne put back the RF box, we found |
|
9105
|
Wed Sep 4 20:47:15 2013 |
manasa | Update | LSC | Calibrated in-loop MICH noise | To estimate in-loop MICH noise:
(a) Calibrate MICH_ERR:
1. Lock the arms for IR using POX11 |
|
9137
|
Wed Sep 18 11:29:43 2013 |
manasa | Update | CDS | Dataviewer cannot connect to fb | Masayuki pointed out that dataviewer wasn't
connecting to the fb this morning.
When I started dataviewer from the |
|
9170
|
Fri Sep 27 16:02:23 2013 |
manasa | Update | Green Locking | Y arm ALS phase tracking loop gain changed | [Masayuki, Manasa]
While trying to lock the arms using
ALS we found that the locks were not very |
   |
9171
|
Fri Sep 27 20:28:10 2013 |
manasa | Update | Green Locking | ALS servo | [Masayuki, Manasa]
I. ALS servo loops
After fixing things with the phase |
 |
9176
|
Mon Sep 30 17:55:45 2013 |
manasa | Update | Green Locking | X and Y arm transmission needs to be decoupled | [Masayuki, Manasa]
Problem
We wanted to lock both the arms using |
|
9178
|
Mon Sep 30 23:56:19 2013 |
manasa | Update | Green Locking | ALS autolocker flowchart | [Masayuki, Manasa]
Flowchart for ALS autolocker. The
error signal thresholds will be decided by |
|
9195
|
Thu Oct 3 09:01:06 2013 |
manasa | Update | Green Locking | ALS high frequency noise | As I was trying to solve the 2 arm
ALS problem, I found the Y arm ALS not so
stable AGAIN :( . I measured the in-loop |
|
9198
|
Thu Oct 3 13:54:25 2013 |
manasa | Update | Green Locking | ALS out-of loop noise | We found the PDH servo gain for Y arm green
was set at 2 (too low). The gain was set
to 8.6 (based on earlier OLTF measurement |
|
9219
|
Tue Oct 8 00:21:01 2013 |
manasa | HowTo | Green Locking | ALS arm stabilization | Step by
step procedure for stabilizing arms using
ALS servo |
|
9233
|
Fri Oct 11 00:37:23 2013 |
manasa | Update | Green Locking | X arm green locking modes | [Masayuki, Manasa]
We have stabilized the ALS for Y
arm and concluded that although the PDH servo |
 |
9260
|
Wed Oct 23 00:05:17 2013 |
manasa | Update | SUS | Unstable Y arm ALS points to problems with ETMY suspension | [Masayuki, Manasa]
Looking into control signals and error |
|
9303
|
Mon Oct 28 14:12:48 2013 |
manasa | Update | IOO | Mode Cleaner relocked |
|
|
9320
|
Wed Oct 30 16:46:17 2013 |
manasa | Update | IOO | MC aligned | MC has not been very happy since last night.
What I did to fix this:
1. Disabled autolocker and WFS and |
|
9322
|
Thu Oct 31 15:34:28 2013 |
manasa | Update | IOO | MC not happy since yesterday |
|
|
9342
|
Tue Nov 5 00:39:43 2013 |
manasa | Update | IOO | IFO alignment tuning | Information acknowledged from Steve:
The last steering mirror mount for
IR on the PSL was swapped for a more robust |
|
9350
|
Tue Nov 5 19:50:07 2013 |
manasa | Update | Electronics | IOO rack +/-5V power supplies | The power supply to the ADC box on the
IOO rack (that reads the beat I & Q signals)
was pulled out because it did not run through |
|
9356
|
Wed Nov 6 15:59:41 2013 |
manasa | Update | Electronics | IOO rack +/-5V power supplies |
|
|
9391
|
Fri Nov 15 10:19:26 2013 |
manasa | Update | CDS | Can't talk to AUXEY? |
|
|
9397
|
Fri Nov 15 14:08:13 2013 |
manasa | Update | PSL | PSL Innolight shuts down again |
|
|
9411
|
Tue Nov 19 14:47:59 2013 |
manasa | Update | LSC | Green status |
|
|
9414
|
Tue Nov 19 21:28:05 2013 |
manasa | Update | LSC | PRMI carrier locking | Since we have never tried to lock PRMI
on carrier after the folding mirrors were
flipped, I tried to lock PRCL on carrier. |
|
9415
|
Tue Nov 19 21:59:35 2013 |
manasa | Update | LSC | PRMI carrier locking |
|
|
9526
|
Tue Jan 7 16:41:08 2014 |
manasa | Update | IOO | WFS moving MC suspensions |
|
 |
9527
|
Tue Jan 7 17:16:04 2014 |
manasa | Update | IOO | MC aligned |
|
|
9532
|
Tue Jan 7 23:09:10 2014 |
manasa | Update | IOO | MC aligned |
|
|
9540
|
Wed Jan 8 17:53:26 2014 |
manasa | Update | General | IFO plan, IPANG telescope | For the IPANG telescope design, we are
in the 'beyond the Rayleigh range' regime.
So using a single lens to make the beam small |
 |
9587
|
Thu Jan 30 11:59:03 2014 |
manasa | Update | CDS | fb timing was off |
|
|
9589
|
Fri Jan 31 18:41:25 2014 |
manasa | Update | General | IFO alignment update | [EricQ, Gabriele, Manasa]
We found we had lost the Y arm pointing
from yesterday. We tried to recover the pointing |
|
9596
|
Tue Feb 4 16:43:50 2014 |
manasa | Update | General | IFO alignment update | [EricQ, Manasa]
We are close to the end of the vent
except for a couple of issues. |
|
9597
|
Tue Feb 4 17:40:19 2014 |
manasa | Update | General | Ready for pump down?? |
|
|
9601
|
Wed Feb 5 15:26:57 2014 |
manasa | Update | General | Ready for pump down?? |
|
|
9602
|
Wed Feb 5 15:39:41 2014 |
manasa | Update | General | We are pumping down | [Steve, Manasa]
I checked the alignment one last
time. The arms locked, PRM aligned, oplevs |
|
9621
|
Mon Feb 10 22:21:55 2014 |
manasa | Update | Green Locking | X and Y arm green tuned | Y arm green: Nothing
much was disturbed. I touched the steering
mirrors and brought |
|
9624
|
Tue Feb 11 21:22:02 2014 |
manasa | Update | Green Locking | ALS X and Y arm restored | The X and
Y arms were locked successfully using ALS |
|
9632
|
Thu Feb 13 13:18:33 2014 |
manasa | Update | IOO | MC needed some help | The MC has been funny since yesterday.
I checked the suspensions INMON channels
and they seemed ok. So I went ahead and tweaked |
|
9638
|
Fri Feb 14 02:33:09 2014 |
manasa | Update | General | My IFO time summary | MC
tuning
Although the morning MC tuning looked |
|