| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12537
|
Fri Oct 7 10:29:57 2016 |
Steve | Update | VAC | RGA removed | The RGA is removed for repaire. It's
volume at atmophere and sealed.. P4 reading
of 38 Torr is not correct. |
|
|
12538
|
Fri Oct 7 15:36:03 2016 |
Steve | Update | PEM | the lab temp is up | The IFO room temp is up
|
|
|
12539
|
Fri Oct 7 20:25:14 2016 |
Koji | Update | CDS | Power-cycled c1psl and c1iool0 | Found the MC autolocker kept failing, It
turned out that c1iool0 and c1psl went bad
and did not accept the epics commands. |
|
|
12540
|
Fri Oct 7 20:56:15 2016 |
Koji | Update | SUS | Output matrix diagonalization | I wanted to see what is the reason to have
such large coupling between pitch and yaw
motions. |
|
|
12541
|
Mon Oct 10 09:31:25 2016 |
Steve | Update | SUS | PRM damping restored | Local earth quake 3.7 mag trips PRM
ETMY_UL glitch
What about the MC? |
|
|
12542
|
Mon Oct 10 11:48:05 2016 |
gautam | Update | CDS | Power-cycled c1susaux, realigned PMC, spots centered on WFS1 and WFS2 | [Koji, Gautam]
We did the following today morning:
I re-aligned the PMC - |
|
|
12543
|
Mon Oct 10 17:27:29 2016 |
rana | Update | DMF | summar pages dead again | Been non-functional for 3 weeks. Anyone
else notice this? images missing since ~Sep
21. |
|
|
12544
|
Mon Oct 10 17:42:47 2016 |
Max Isi | Update | DMF | summar pages dead again | I've re-submitted the Condor job; pages
should be back within the hour.
|
|
|
12545
|
Mon Oct 10 18:34:52 2016 |
gautam | Update | General | PZT OM Mirrors | I did a quick survey of the drive electronics
for the PZT OM mirrors today. The hope is
that we can correct for the clipping observed |
|
|
12546
|
Tue Oct 11 00:43:50 2016 |
ericq | Update | SUS | PRM LR problematic again | Tonight, and during last week's locking,
we noticed something intermittently kicking
the PRM. I've determined that PRM's |
|
|
12547
|
Tue Oct 11 02:48:43 2016 |
ericq | Update | LSC | Revival Attempts | Still no luck relocking, but got a little
further. I disabled the output of the problematic
PRM OSEM, it seems to work ok. Looking at |
|
|
12548
|
Tue Oct 11 08:09:46 2016 |
Max Isi | Update | DMF | summar pages dead again | Summary pages will be unavailable today
due to LDAS server maintenance. This is unrelated
to the issue that Rana reported. |
|
|
12549
|
Tue Oct 11 10:15:04 2016 |
Steve | Update | SUS | PRM LR problematic again | It started here
|
|
|
12550
|
Tue Oct 11 10:38:51 2016 |
Steve | Update | SUS | wire standoffs update | 100 Sapphire prizms arrived.
|
|
|
12551
|
Tue Oct 11 13:30:49 2016 |
gautam | Update | SUS | PRM LR problematic again | Perhaps the problem is electrical? The
attached plot shows a downward trend for
the LR sensor output over the past 20 days |
|
|
12552
|
Wed Oct 12 13:34:28 2016 |
gautam | Update | SUS | PRM LR problematic again | Looks like what were PRM problems are now
seen in the SRM channels, while PRM itself
seems well behaved. This supports the hypothesis |
|
|
12553
|
Wed Oct 12 15:01:22 2016 |
steve | Update | SUS | SOS ITM baffles plates are ready | The two 40 mm apeture baffles at the ends
were replaced by 50 mm one. ITM baffles with
50 mm apeture are baked ready for installation. |
|
|
12554
|
Wed Oct 12 18:09:25 2016 |
Lydia | Update | General | Acromag Progress | [Lydia, Johannes]
Johannes acquired a crate to contain
the Acromag setup and wiring, and installed |
|
|
12555
|
Wed Oct 12 22:51:26 2016 |
Koji | Update | General | Clipping could not be improved by the PZTs - NEED ANOTHER VENT | [Gautam Koji]
We engaged the HV driver
to the output port PZTs, hoping to mitigate |
|
|
12556
|
Thu Oct 13 00:23:54 2016 |
ericq | Update | VAC | Pre-vent prep | I have completed the following non-Steve
portions of the pre-vent checklist [wiki-40m.ligo.caltech.edu]
Center all oplevs, transom |
|
|
12557
|
Thu Oct 13 09:30:38 2016 |
Steve | Update | General | vent 79 is happening |
|
|
|
12558
|
Thu Oct 13 14:49:57 2016 |
Koji | Configuration | PEM | XLR(F)-XLR(M) cable took from the fibox to the Blue microphone | [Gautam Koji]
XLR(F)-XLR(M) cable for the blue
microphone is missing. Steve ordered one. |
|
|
12559
|
Thu Oct 13 16:48:34 2016 |
Steve | Update | VAC | vent 79 is completed | IFO is at atmosphere. The MC can be locked
in air now.
The doors will be coming off tomorrow |
|
|
12560
|
Thu Oct 13 19:28:14 2016 |
gautam | Update | General | in-air alignment | I did the following today to prepare for
taking the doors off tomorrow.
Locked MC at low power
low |
|
|
12561
|
Fri Oct 14 10:31:53 2016 |
gautam | Update | General | doors are off ITMY and BS/PRM chambers | [steve,ericq,gautam]
We re-checked IMC locking, arm
alignments (we were able to lock and dither |
|
|
12562
|
Fri Oct 14 15:47:00 2016 |
rana | Update | Treasure | filters + clip | I say just fix the clipping. Don't
worry about the PRM OSEM filters. We can
do that next time when we put in the ITM |
|
|
12563
|
Fri Oct 14 18:33:55 2016 |
gautam | Update | General | AS clipping investigations | [steve,ericq,gautam]
In the afternoon, we took the heavy
door off the OMC chamber as well, such that |
7x |
|
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 |