| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14537
|
Thu Apr 11 12:21:01 2019 |
not Koji | Update | PSL | PSL fan is noisy | I could probably install the new fan if
we have one. Can you do without the
laser for a while? |
|
|
15586
|
Sat Sep 19 19:37:16 2020 |
not Koji | Update | VAC | TP3 RP failure | Disconcerting because those tip seals were
just replaced [15417].
Maybe they were just defective, but if there |
|
|
16561
|
Mon Jan 10 14:00:44 2022 |
not Koji | Update | BHD | SOS assembly -- SR2 | Yes,
For the thin optics adapter design,
we want Peek 1/4-20 screw (part # 98885A131) |
|
|
16568
|
Tue Jan 11 09:53:14 2022 |
not Koji | Update | BHD | SOS assembly -- Peek screws and nuts | I handed the Peek parts we got from McMaster
to Jordan for C&B. |
|
|
5784
|
Wed Nov 2 11:29:04 2011 |
not Zach | Update | SUS | "Dr. SUS" progress |
|
|
|
6928
|
Fri Jul 6 09:00:34 2012 |
not Zach | Update | Computers | NDS2 client now working on Ubuntu machines |
|
|
|
10073
|
Thu Jun 19 14:52:20 2014 |
not ericq | Update | Computer Scripts / Programs | control room bashrc change |
|
|
|
14200
|
Tue Sep 18 17:56:01 2018 |
not gautam | Update | IOO | PMC and IMC relocked, WFS inputs turned off | I restarted the LSC models in the usual
way via the c1lsc reboot script. After doing
this I was able to lock the YARM configuration |
|
|
14253
|
Sun Oct 14 16:55:15 2018 |
not gautam | Update | CDS | pianosa upgrade | DASWG is not what we want to use for config;
we should use the K. Thorne LLO
instructions, like I did for ROSSA. |
|
|
15113
|
Mon Jan 6 19:05:09 2020 |
not gautam | Update | PSL | Assembly underway for c1psl upgrade | I found them, thanks. After c1psl, there
are 4 2GB DIMM cards and 1 SSD left. I moved
them into the storage bins with all the other |
|
|
15127
|
Wed Jan 15 16:08:40 2020 |
not gautam | Update | PSL | Assembly underway for c1psl upgrade | You're right. We had the right
idea before but we got confused about this
issue. I changed all the XT1121s to XT1111 |
|
|
15647
|
Wed Oct 28 14:01:03 2020 |
not gautam | Update | General | ISS checkout | that little PD in the black mount was never
very good. The AD829 is not a good opamp
for transimpedance and especially not good |
|
|
13930
|
Thu Jun 7 22:36:09 2018 |
not keerthana | Update | PSL | observing the resonance signal corresponding to the injected frequency. | I worked a bit on the PSL table today |
|
|
9849
|
Thu Apr 24 14:23:09 2014 |
not manasa | Update | LSC | Y end whitening board |
maybe the tantalum caps on
the daughter board power supply lines are |
|
|
14220
|
Mon Oct 1 12:03:41 2018 |
not yuki | Configuration | ASC | PZT driver board verification | I assume this QPD set is a D1600079/D1600273
combo.
How much was the SUM output during |
|
|
16251
|
Mon Jul 19 22:16:08 2021 |
paco | Update | LSC | PRFPMI locking | [gautam, paco]
Gautam managed to lock PRFPMI a
little before ~ 22:00 local time. The ALS |
|
|
16269
|
Wed Aug 4 18:19:26 2021 |
paco | Update | General | Added infrasensing temperature unit to martian network | [ian, anchal, paco]
We hooked up the infrasensing unit
to power and changed its default IP address |
|
|
16274
|
Tue Aug 10 17:24:26 2021 |
paco | Update | General | Five day trend | Attachment 1 shows a five and a half day
minute-trend of the three temperature sensors.
Logging started last Thursday ~ 2 pm when |
|
|
17798
|
Tue Aug 22 10:29:14 2023 |
paco | Update | Optical Levers | Storm and earthquake recovery -- ETMY oplev laser dead, ITMY stuck? | [JC, paco]
This morning we noted most optics
were tripped, probably as a result of a recent |
|
|
17800
|
Tue Aug 22 11:31:38 2023 |
paco | Update | Optical Levers | Storm and earthquake recovery -- ITMY restored | [JC, Koji-remote, paco]
ITMY stuck --> Shaken remotely and |
|
|
951
|
Tue Sep 16 16:47:01 2008 |
pete | Configuration | PSL | Prototype FSS reference installed | After verifying output, I installed the new
prototype 21.5 MHz FSS reference (Wenzel
crystal oscillator and ZHL-2 amp). Yoichi |
|
|
986
|
Tue Sep 23 15:28:06 2008 |
pete | Configuration | PSL | new 21.5 MHz FSS reference installed | The new 21.5 MHz FSS reference is now installed
in the rack with the 7 Sorensen PS. Both
outputs give 18.7 dBm. The MC seems happy.
|
|
|
1043
|
Mon Oct 13 13:51:49 2008 |
pete | Configuration | PSL | attempt to measure FSS ref phase | On Friday I began a measurement of the FSS
reference phase. The setup involves the
following:
|
|
|
1046
|
Tue Oct 14 14:19:36 2008 |
pete | Configuration | PSL | FSS ref phase | Today I made several measurements which should
yield the optimized phase for the FSS 21.5
MHz reference. I made two sets of measurements, |
|
|
1050
|
Wed Oct 15 22:07:52 2008 |
pete | Configuration | PSL | FSS ref phase measurements | Optimizing the FSS LO/RF phase at 500 kHz,
above the servo band, proved to be noisy
and those measurements were useless. Today |
|
|
1053
|
Thu Oct 16 13:12:58 2008 |
pete | Configuration | PSL | phase between FSS reference outputs | I verified the phase between the FSS reference
outputs (used for LO and RF) using matched
BNC cables. I measured 0.95 degree (average |
|
|
1054
|
Thu Oct 16 16:26:26 2008 |
pete | Configuration | PSL | FSS phase matching cable installed | RG 405 cable has a solid teflon dielectric,
and a velocity factor of 0.69. To get the
8.2 degrees of additional phase on the LO |
|
|
1078
|
Thu Oct 23 20:47:28 2008 |
pete | Configuration | PSL | FSS LO calibration for MEDM | Today I took a quick series of measurements
to calibrate the FSS LO power measurement
in the MEDM. This was done by using the |
|
|
1083
|
Fri Oct 24 11:21:26 2008 |
pete | Configuration | PSL | FSS LO input calibrated in dBm | Based on the measurements described in my
previous elog, I created a new calc record
in the file /cvs/cds/caltech/target/c1psl/psl.db
|
|
|
1245
|
Thu Jan 22 12:08:59 2009 |
pete | Update | oplevs | oplev calibration | Following the procedure described in Royal
Reinecke's 2006 SURF report, I've calibrated
the ETMY yaw oplev DOF. The idea is to sweep |
|
|
1247
|
Thu Jan 22 23:36:50 2009 |
pete | HowTo | oplevs | arm cavity oplev calibration | calibrated the y-arm oplevs. the procedure
is contained in a matlab script. the whereabouts
of this script will be revealed in a future |
|
|
1251
|
Fri Jan 23 16:33:27 2009 |
pete | Update | oplevs | x-arm oplev calibrations | ITMXpit 71 microrad/ct
ITMXyaw 77 microrad/ct
ETMXpit 430 microrad/ct
|
|
|
1327
|
Thu Feb 19 23:50:31 2009 |
pete | Update | Locking | aligned pd's on AP table | Yoichi, Peter
While continuing our efforts to lock,
we noticed the procedure failed at a point |
|
|
1335
|
Tue Feb 24 18:42:15 2009 |
pete | Update | Locking | mc board repair | Peter, Yoichi
Last night:
|
|
|
1435
|
Fri Mar 27 02:40:06 2009 |
pete | Summary | IOO | MC glitch investigation | Yoichi, Pete
The MC loses lock due to glitches
in the MC1 coils.
We do |
|
|
1463
|
Thu Apr 9 12:23:49 2009 |
pete | Update | Locking | tuning ETM common mode | Pete, Yoichi
Last night, we put the IFO in FP
Michelson configuration. We took transfer |
|
|
1489
|
Thu Apr 16 16:26:57 2009 |
pete | Update | Locking | Wed. night locking | yoichi, pete
We installed the watchLockLoss script in |
|
|
1525
|
Tue Apr 28 01:48:45 2009 |
pete | Configuration | VAC | VC1 open | At about 1am or so Yoichi and I opened
VC1. CC1 had fallen to about 5e-5 torr. |
|
|
1557
|
Thu May 7 18:12:12 2009 |
pete | Update | Locking | arm power curve | I've plotted TRX, TRY, PD12I and PD11Q.
Arm powers after locking increase for a few
tens of minutes, peak out, and then decrease |
|
|
1558
|
Thu May 7 23:21:04 2009 |
pete | Update | Locking | arm power curve |
|
|
|
1560
|
Fri May 8 02:08:59 2009 |
pete | Update | Locking | lock stretches | locks last for about an hour. this
was true last night as well (see "arm
power curve" entries). the second |
|
|
1565
|
Fri May 8 15:40:44 2009 |
pete | Update | Locking | progressively weaker locks | the align script was run after the third
lock here. it would have been interesting
to see the arm powers in a 4th lock |
|
|
1578
|
Tue May 12 17:26:56 2009 |
pete | Update | oplevs | etmy oplev quad was bad | Pete, Rob
After looking at some oplev noise
spectra in DTT, we discovered that the ETMY |
|
|
1580
|
Wed May 13 03:05:13 2009 |
pete | Update | oplevs | etmy oplev quad was bad |
|
|
|
1585
|
Thu May 14 02:36:05 2009 |
pete | Update | Locking | unstable IFO | It seems that the MC3 problem is intermittent
(one-day trend attached). I tried to
take advantage of a "clean MC3" |
|
|
1587
|
Thu May 14 16:07:20 2009 |
pete | Summary | SUS | Channel Hopping: That ancient enemy (MC problems) | [quote][quote]The MC side problem could also
be the side tramp unit problem. Set the tramp
to 0 and see if that helps.[/quote]
|
|
|
1588
|
Fri May 15 00:02:34 2009 |
pete | Update | SUS | ETMX coils look OK | I checked the four rear coils on ETMX by
exciting XXCOIL_EXC channel in DTT with amplitude
1000@ 500 Hz and observing the oplev PERROR |
|
|
1610
|
Wed May 20 01:41:19 2009 |
pete | Update | VAC | cryopump probably not it | I found some neat signal analysis software
for my mac (http://www.faberacoustical.com/products/),
and took a spectrum of the ambient noise |
|
|
1616
|
Thu May 21 18:05:03 2009 |
pete | Update | SUS | ETMX coils look OK |
|
|
|
1620
|
Fri May 22 01:27:14 2009 |
pete | Update | SUS | 200 days of MC3 side | Looks like something went nuts in late
April. We have yet to try a hard reboot. |
|