| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13952
|
Wed Jun 13 01:02:40 2018 |
gautam | Update | LSC | Reliable and repeatable 1f DRMI locking | [koji,
gautam]
With Koji's help, I got repeatable |
|
|
13966
|
Thu Jun 14 18:09:24 2018 |
gautam | Update | LSC | Reliable and repeatable 1f DRMI locking | I finally analyzed the sensing measurement
I ran on Tuesday evening. Sensing responses
for the DRMI DOFs seems consistent with what |
|
|
17202
|
Thu Oct 20 19:47:24 2022 |
Tega | Update | CDS | Relocate front-ends to Rack 1X7 | We mounted chiara, all front-end machines
and switches in rack 1x7; reconnected power,
dolphin, onestop and timing cables; and restarted |
|
|
16838
|
Mon May 9 18:49:05 2022 |
Tega | Update | BHD | Relocate green TRX and TRY PDs/cams/optics from PSL table to BS table | [Paco, Tega]
Started work on the relocating
the green transmission optics, cameras and |
|
|
16842
|
Tue May 10 15:46:38 2022 |
JC | Update | BHD | Relocate green TRX and TRY components from PSL table to BS table | [JC, Tega]
Tega and I cleaned up the BS OPLEV
Table and took out a couple of mirrors and |
|
|
12114
|
Tue May 10 03:44:59 2016 |
ericq | Update | LSC | Relocked | ALSX noise is solidly within past acceptable
performance levels. The DRFPMI was locked
on four out of six attempts. |
|
|
5271
|
Fri Aug 19 19:08:40 2011 |
Jenny | Update | PSL | Relocking NPRO to reference cavity. | I am trying again to measure a temperature
step response on the reference cavity on
the PSL table. |
|
|
5272
|
Fri Aug 19 23:41:20 2011 |
Jenny | Update | PSL | Relocking NPRO to reference cavity. |
|
|
|
5468
|
Mon Sep 19 20:56:36 2011 |
Paul | Summary | SUS | Remaining SRM and ITMY OSEMs calibrations |
I've now taken data for the pitch
and yaw calibrations for the OSEMs of SRM |
|
|
16519
|
Fri Dec 17 12:32:35 2021 |
Koji | Update | SUS | Remaining task for 2021 | Anything else? Feel free to edit this entry.
- SUS: AS1 hanging
- SUS: PR3/SR2/LO2 3/4" thick |
|
|
16522
|
Fri Dec 17 19:19:42 2021 |
Koji | Update | SUS | Remaining task for 2021 | I had the fear that any mistake in the
electronics chain could have been the show
stopper. |
|
|
16525
|
Sun Dec 19 07:52:51 2021 |
Anchal | Update | SUS | Remaining task for 2021 | The I/O chassis reassigns the ADC and DAC
indices on every power cycle. When we moved
it, it must have changed it from the order |
|
|
16534
|
Wed Dec 22 18:16:23 2021 |
Koji | Update | SUS | Remaining task for 2021 | The in-vacuum installation team has reported
that the side OSEMs of ITMX and LO1 are going
to be interfering if place LO1 at the planned |
|
|
2074
|
Fri Oct 9 03:53:56 2009 |
Jenne | Update | Adaptive Filtering | Remaking the ASS | The c1ass computer, which is now used for
the OAF system, has many remnants from the
days when it was actually used as an ASS. |
|
|
17712
|
Tue Jul 25 10:22:09 2023 |
Koji | Update | PEM | Remarks on the IFO recovery after CDS restart. | Yesterday during the recovery work from
the CDS restart, I found ASS was not working
for both arms. Both arms were flashing and |
|
|
17713
|
Tue Jul 25 15:06:57 2023 |
Yehonathan | Update | PEM | Remarks on the IFO recovery after CDS restart. | Yes, it seems like ITMX UL sensor issue
has reared its ugly head again (see attachment).
|
|
|
17729
|
Thu Jul 27 21:39:50 2023 |
Hiroki | Update | PEM | Remarks on the IFO recovery after CDS restart. | [Koji, Hiroki]
We
resotred the noisy ITMX UL sensor reported |
|
|
17733
|
Sat Jul 29 00:08:35 2023 |
Hiroki | Update | PEM | Remarks on the IFO recovery after CDS restart. | [Koji, Hiroki]
We investigated the cause of the
unstable OPLEV damping in ITMX and found |
|
|
17734
|
Sat Jul 29 00:44:57 2023 |
Koji | Update | PEM | Remarks on the IFO recovery after CDS restart. | I had a suspicion that some of the ITMX
coils were not properly working. So individual
coils of the 4 test masses were excited while |
|
|
11563
|
Thu Sep 3 00:45:25 2015 |
Ignacio | Update | IOO | Remeasured MC2 to MCL TF + Improved subtraction performance | Today, I
remeasured the transfer function for MC2
to MCL in order to improve the subtraction |
8x |
|
8498
|
Fri Apr 26 20:43:51 2013 |
Jenne | Update | LSC | Remeasuring the Schnupp asymmetry | [Jenne, Annalisa, with guidance from Koji]
We took data to remeasure the
Schnupp asymmetry, using the Valera method |
|
|
8528
|
Fri May 3 17:32:59 2013 |
Jenne | Update | LSC | Remeasuring the Schnupp asymmetry | I have looked at / analyzed the Schnupp
data that Annalisa and I took last week,
as well as some more Yarm data that I took |
|
|
17743
|
Tue Aug 1 21:52:46 2023 |
Hiroki | Update | PSL | Remote switching of PSL shutter is not working | [Yuta, Hiroki]
Remote
switching of PSL shutter is not working.
|
|
|
1738
|
Mon Jul 13 15:48:05 2009 |
rana | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | Around 2 PM today, I removed the blue flap
which has been deflecting the cold air from
the AC down into the laser chiller.
|
|
|
1740
|
Mon Jul 13 23:03:14 2009 |
rob, alberto | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | [quote]Around 2 PM today, I removed the blue
flap which has been deflecting the cold air
from the AC down into the laser chiller.
|
|
|
1741
|
Tue Jul 14 00:32:46 2009 |
rob, alberto | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | [quote][quote]Around 2 PM today, I removed
the blue flap which has been deflecting the
cold air from the AC down into the laser |
|
|
1745
|
Tue Jul 14 17:48:20 2009 |
Jenne | Omnistructure | Environment | Removal of the cold air deflection device for the MOPA chiller | [quote][quote][quote]Around 2 PM today, I
removed the blue flap which has been deflecting
the cold air from the AC down into the laser |
|
|
572
|
Thu Jun 26 10:56:15 2008 |
Max Jones | Update | PEM | Removed Magnetometer | I removed the Bartington Magnetometer on the
x arm to one of the outside benches. I'll
be trying to determine if and how it works |
|
|
17691
|
Tue Jul 18 00:16:01 2023 |
Hiroki | Update | General | Removed T&R measurement setup | I removed the T&R
measurement setup with permission from Radhika |
|
|
7246
|
Tue Aug 21 22:54:47 2012 |
Jenne | Update | Locking | Removed beam dump from POY path | POY was looking funny, and the YARM wasn't
locking. It looked like POY wasn't
seeing any light at all. I went to |
|
|
16676
|
Wed Feb 23 15:08:57 2022 |
Anchal | Update | General | Removed extra beamsplitter in MC WFS path | As discussed in the meeting, I removed
the extra beam splitter that dumps most of
the beam going towards WFS photodiodes. |
|
|
4561
|
Fri Apr 22 12:07:38 2011 |
josephb, steve | Update | CDS | Removed hanging D-sub to SCSI in 1X2 | Problem:
Way back, Jay had D-sub
to SCSI adapters made to adapt our existing
Sander box AA filters to the new SCSI based |
|
|
4590
|
Fri Apr 29 14:36:36 2011 |
josephb, steve | Update | CDS | Removed hanging D-sub to SCSI in 1X5 |
|
|
|
3080
|
Wed Jun 16 11:31:19 2010 |
josephb | Summary | Computers | Removed scaling fonts from medm on Allegra | Because it was driving me crazy while working
on the new medm screens for the simulated
plant, I went and removed the aliased font |
|
|
17184
|
Tue Oct 11 16:52:42 2022 |
Anchal | Update | IOO | Renaming WFS channels to match LIGO site conventions | [Tega, Anchal]
c1mcs and c1ioo models have been
updated to add new acquisition of data. |
|
|
2806
|
Mon Apr 19 07:38:07 2010 |
rana | HowTo | Electronics | Repair and Calibration of SR560: s/n 59650 | Frank noticed that this particular SR560
had an offset on the output which was unzeroable
by the usual method of tuning the trim pot |
|
|
9560
|
Thu Jan 16 21:38:13 2014 |
ericq | Update | LSC | Repeat of PRC length measurement | [ericq,Jenne]
Since we don't have agreement between
the measurements we made the other day and |
|
|
15966
|
Thu Mar 25 16:02:15 2021 |
gautam | Summary | SUS | Repeated measurement of coil Rs & Ls for PRM/BS | Method
Since I am mainly concerned with
the actuator part of the OSEM, I chose to |
|
|
9335
|
Mon Nov 4 12:07:55 2013 |
Dmass | Omnistructure | General | Replaced Broken Drill Bits | I broke a small bit while using the 40m
drill press to vent some 1/4-20 screws for
the cryo experiment. |
|
|
9202
|
Fri Oct 4 12:33:27 2013 |
Masayuki | Update | SUS | Replaced the laser for Optical Lever of ETMY | [Steve, Masayuki]
We replaced the laser for optical
lever of ETMY. And also we aligned the path |
|
|
9203
|
Fri Oct 4 14:36:44 2013 |
rana | Update | SUS | Replaced the laser for Optical Lever of ETMY | That's good, but please no
more Oplev work. We want to do all of
it at once and to make no more changes until |
|
|
9206
|
Sun Oct 6 18:37:43 2013 |
rana | Update | SUS | Replaced the laser for Optical Lever of ETMY | I centered the ETMY OL today and found
that the UGF was around 3-4x too LOW after
the laser swap and re-alignment. That's why |
|
|
9212
|
Mon Oct 7 10:51:18 2013 |
Steve | Update | SUS | Replaced the laser for Optical Lever of ETMY | Just plot.
RA: I'm not |
|
|
8125
|
Wed Feb 20 23:25:50 2013 |
Zach | Summary | Electronics | Replacement for the AD743: OPA140 and OPA827 | I have found two great FET input chips |
|
|
8151
|
Sat Feb 23 18:01:38 2013 |
Zach | Summary | Electronics | Replacement for the AD743: OPA140 and OPA827 | Rana suggested that I measure the OPA827
and OPA140 noise with high source impedance
so as to see if we could find the low-frequency |
|
|
8153
|
Sun Feb 24 16:49:00 2013 |
rana | Summary | Electronics | Replacement for the AD743: OPA140 and OPA827 | This looks pretty good already.
Not sure if we can even measure anything
reasonable below 0.1 Hz without a lot of |
|
|
12239
|
Fri Jul 1 17:51:28 2016 |
Praful | Summary | Electronics | Replacing DIMM on Optimus | There has been an ongoing memory error
in optimus with the following messages:
controls@optimus|~ |
|
|
12275
|
Fri Jul 8 15:44:07 2016 |
Praful | Update | Electronics | Replacing DIMM on Optimus | Optimus' memory errors are back so
I found the exact DIMM model needed to replace:
http://www.ebay.com/itm/Lot-of-10-Samsung-4GB-2Rx4-PC2-5300P-555-12-L0-M393T5160QZA-CE6-ECC-Memory-/201604698112?hash=item2ef0939000:g:EgEAAOSwqBJXWFZh |
|
|
12613
|
Mon Nov 14 14:21:06 2016 |
gautam | Summary | CDS | Replacing DIMM on Optimus | I replaced the suspected faulty DIMM earlier
today (actually I replaced a pair of them
as per the Sun Fire X4600 manual). I did |
|
|
12615
|
Mon Nov 14 19:32:51 2016 |
rana | Summary | CDS | Replacing DIMM on Optimus | I did apt-get update and then apt-get upgrade
on optimus. All systems are nominal. |
|