| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12564
|
Fri Oct 14 19:59:09 2016 |
Yinzi | Update | Green Locking | Continuing work with the TC 200 | Oct. 15, 2016
Another attempt (following elog
8755) |
|
|
12565
|
Mon Oct 17 14:48:12 2016 |
Steve | Update | safety | safety training | Ashley Fowler "high shool"
student received basic 40m safety training
and Lydia is her guarding angle. |
|
|
12566
|
Mon Oct 17 22:45:16 2016 |
gautam | Update | General | AS beam centered on all OMs | [ericq, lydia, gautam]
IMC realignment, Arm
dither alignment |
7x |
|
12567
|
Tue Oct 18 17:11:42 2016 |
Yinzi | Update | Green Locking | More serial port troubleshooting | I connected to the serial port using |
|
|
12568
|
Tue Oct 18 18:56:57 2016 |
gautam | Update | General | OM5 rotated to bypass OMC, green scatter is from window to PSL table | [ericq, lydia, gautam]
We started today by checking
leveling of ITMY table, all was okay on that |
|
|
12569
|
Wed Oct 19 08:28:11 2016 |
Steve | Update | SUS | ITMY_UL | Everybody is happy, except ITMY_UL or satalite
box.
Gautam shows perfect form in the |
|
|
12570
|
Wed Oct 19 14:43:15 2016 |
Steve | Update | General | Viewports & coating of 2001 | Tilted viewports installed in horizontal
position. Atm2 |
|
|
12571
|
Wed Oct 19 16:41:55 2016 |
gautam | Update | General | Heavy doors back on | [ericq, lydia, steve, gautam]
We aligned the arms, and
centered the in-air AS beam onto the PDs |
8x |
|
12572
|
Wed Oct 19 17:02:34 2016 |
rana | Update | General | Viewports & coating of 2016 | These old specs are not so bad. But we
now want to get replacements for the TRX
and TRY and PSL viewports that are R <0.1% |
|
|
12573
|
Wed Oct 19 18:32:25 2016 |
rana, yinzi | Update | PSL | RefCav thermal control: heater is dead | We wanted to re-activate the Heater for
the reference cavity today to use it as a
testbed for PID autotuning and the new heater |
|
|
12574
|
Thu Oct 20 09:17:08 2016 |
Steve | Update | VAC | Pumpdown 80 has started | Pumping again after 7 days at atmosphere.
BS, ITMY and OMC chambers were
open only. |
|
|
12575
|
Thu Oct 20 15:59:52 2016 |
Steve | Update | VAC | Pumpdown 80 has completed | IFO pressure 1.7E-4 Torr on new not logged
cold cathode gauge. P1 <7E-4 Torr
|
|
|
12576
|
Fri Oct 21 02:06:20 2016 |
gautam | Update | General | IFO recovery | The pressure on the newly installed gauge
on the X arm was 6E-5 torr when I came in
today evening, so I decided to start the |
|
|
12577
|
Fri Oct 21 09:28:21 2016 |
Steve | Update | VAC | Vac Normal reached | Dry pump of TP3 replaced after 9.5 months
of operation.[ 45 mTorr d3 ]
The annulosses are pumped. |
|
|
12578
|
Mon Oct 24 11:39:13 2016 |
gautam | Update | General | ALS recovered | I worked on recovering ALS today. Alignments
had drifted sufficiently that I had to to
the alignment on the PSL table onto the green |
|
|
12579
|
Tue Oct 25 15:56:11 2016 |
gautam | Update | General | PRFPMI locked, arms loss improved | [ericq,gautam]
Given that most of the post vent
recovery tasks were done, and that the ALS |
|
|
12580
|
Tue Oct 25 18:07:28 2016 |
Koji | Update | General | PRFPMI locked, arms loss improved | Great to hear that we have the PRG of ~16
now!
Is this 150ppm an avg loss per |
|
|
12581
|
Wed Oct 26 16:06:01 2016 |
Johannes | Update | General | Autolocker maintenance | [Gautam, Johannes]
The autolocker was acting up today,
Gautam traced it to EPICS channels ( namely |
|
|
12582
|
Thu Oct 27 09:38:32 2016 |
Steve | Update | PEM | mouse | We may have a mouse in the lab.
Do not leave any food scrap in trash ! Traps will be set. |
|
|
12583
|
Thu Oct 27 12:06:39 2016 |
gautam | Update | General | PRFPMI locked, arms loss improved |
|
|
|
12584
|
Thu Oct 27 13:48:20 2016 |
Koji | Update | General | PRFPMI locked, arms loss improved | It is also difficult to have a high arm
transmission without having high PRG.
What about to plot the arm trans |
|
|
12585
|
Thu Oct 27 23:29:47 2016 |
ericq | Update | General | PRFPMI locked, arms loss improved | As Gautam mentioned, we had some success
locking the PRFPMI last
night. (SRM satellite box is still in surgery...) |
|
|
12586
|
Fri Oct 28 01:44:48 2016 |
gautam | Update | General | PRFPMI model vs data studies | Following Koji's suggestion, I decided
to investigate the relation between my Finesse
model and the measured data. |
6x |
|
12588
|
Fri Oct 28 19:13:57 2016 |
rana | Update | General | PR gain | I don't think the loss of 25 ppm is
outrageous. Its just surprisingly good. The
SIS model predicted numbers more like 1 ppm |
|
|
12589
|
Mon Oct 31 16:20:50 2016 |
Steve | Update | VAC | RGA is reinstalled | Quad rods and ionizer kit: consisting
of repeller cage, anode grid, focus plate
and filament were replaced....... under |
|
|
12590
|
Tue Nov 1 09:03:08 2016 |
Steve | Update | SUS | seismic activity is up | Salton See is shaking again.
|
|
|
12591
|
Wed Nov 2 12:05:00 2016 |
ericq | Update | ASC | Quick WFS thoughts | I poked around a bit thinking about what
we need for a single AS WFS.
New things that we would need: |
|
|
12592
|
Wed Nov 2 22:56:45 2016 |
gautam | Update | CDS | c1pem revamped | installing the BLRMS 2k blocks turned out
to be quite non-trivial due to a whole host
of CDS issues that had to be debugged, but |
|
|
12593
|
Thu Nov 3 08:07:52 2016 |
Steve | Update | General | power glitch | Building:
Campus Wide
|
|
|
12594
|
Thu Nov 3 11:33:24 2016 |
gautam | Update | General | power glitch - recovery | I did the following:
Hard reboots for fb, megatron,
and all the frontends, in that order
Checked |
|
|
12595
|
Thu Nov 3 12:38:42 2016 |
gautam | Update | CDS | c1pem revamped | A number of changes were made to C1PEM
and some library parts. Recall that the motivation
was to add BLRMS channels for all our suspension |
|
|
12596
|
Thu Nov 3 12:40:10 2016 |
gautam | Update | General | projector light bulb is out | The projector failed just now with a pretty
loud 'pop' sound - I've never
been present when the lamp goes out, so I |
|
|
12597
|
Thu Nov 3 13:36:16 2016 |
ericq | Update | CDS | c1pem revamped | It seems that the EX and EY BLRMS banks
were missing the BP and LP filters for the
0.03-0.1 and 0.1-0.3 bands. I've copied |
|
|
12599
|
Fri Nov 4 18:31:05 2016 |
Lydia | Update | CDS | c1auxex channels/pins for Acromag | Here are the channels we are planning to
switch over from c1auxex to Acromag,
and their current pin numbers on the existing |
|
|
12600
|
Sat Nov 5 15:45:44 2016 |
rana | Update | CDS | c1auxex channels/pins for Acromag | We don't need to record any of the
AIOut channels, the OL channels (since we
record them fast), or the _MEAN channels |
|
|
12601
|
Mon Nov 7 08:00:11 2016 |
Steve | Update | SUS | SRM -PRM sat. amp swap | I just realized that Gautam set this test
up and turned damping off......He will explane
the details |
|
|
12602
|
Mon Nov 7 16:05:55 2016 |
gautam | Update | SUS | PRM Sat. Box. Debugging | Short summary of my Sat. Box. debugging
activities over the last few days. Recall
that the SRM Sat. Box has been plugged into |
|
|
12603
|
Mon Nov 7 17:24:12 2016 |
gautam | Update | Green Locking | Green beat setup on PSL table | I've been trying to understand the
green beat setup on the PSL table to see
if I can explain the abysmal mode-matching |
|
|
12604
|
Mon Nov 7 19:49:44 2016 |
Johannes | Update | CDS | acromag chassis hooked up to PSL | [Lydia, Johannes]
We're waiting on the last couple
electrical components to arrive that are |
|
|
12605
|
Tue Nov 8 08:51:59 2016 |
Steve | Update | PEM | mouse hole sealed | This is where the mammal came though. It
is reach able from room 108 CES
|
|
|
12606
|
Tue Nov 8 11:54:38 2016 |
gautam | Update | SUS | PRM Sat. Box. looks to be fixed | Looks like the PRM Sat. Box is now okay,
no evidence of the kind of glitchy behaviour
we are used to seeing in any of the 5 channels. |
|
|
12607
|
Tue Nov 8 17:51:09 2016 |
Lydia | Update | CDS | acromag chassis hooked up to PSL | We set up the chassis in 1X7 today. Steve
is ordering a longer 25 pin cable to reach.
Until then the PSL diagnostic channels will |
|
|
12608
|
Wed Nov 9 11:40:44 2016 |
ericq | Update | CDS | safe.snap BURT files now in svn | This is long overdue, but our burt files
for SDF now live in the LIGO userapps SVN,
as they should. |
|
|
12609
|
Wed Nov 9 23:21:44 2016 |
gautam | Update | Green Locking | Green beat setup on PSL table | I tried to realize an improvement in the
mode matching onto the BBPDs by moving the
lens mentioned in the previous elog in this |
|
|
12610
|
Thu Nov 10 19:02:03 2016 |
gautam | Update | CDS | EPICS Freezes are back | I've been noticing over the last couple
of days that the EPICS freezes are occurring
more frequently again. Attached is an instance |
|
|
12611
|
Sat Nov 12 01:09:56 2016 |
gautam | Update | LSC | Recovering DRMI locking | Now that we have all Satellite boxes working
again, I've been working on trying to
recover the DRMI 1f locking over the last |
|
|
12612
|
Sun Nov 13 23:42:43 2016 |
Lydia | Update | SUS | ETMX output matrix data | I took data of the ETMX SUSPOS, SUSPIT
and SUSYAW channels while driving each of
the 4 face coils. I manually turned off all |
|
|
12614
|
Mon Nov 14 19:15:57 2016 |
Johannes | Update | General | Achievable armloss measurement accuracy | Looking back at elog
12528, the uncertainty in the armloss
number from the individual quantities in |
|
|
12616
|
Tue Nov 15 19:22:17 2016 |
gautam | Update | General | housekeeping | PRM and SRM sat. boxes have been switched
for some time now - but the PRM sat. box
has one channel with a different |
|
|
12617
|
Tue Nov 15 20:26:35 2016 |
Johannes | Update | Cameras | Basler GigE-Camera on Optimus (+Mafalda dead) | I powered up the existing ace100gm GigE
cam with the PoE injector and tried to interface
with it as described in elog |
|