| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14387
|
Mon Jan 7 11:54:12 2019 |
Jon | Configuration | Computer Scripts / Programs | Vac system shutdown | I'm making a controlled shutdown of
the vac controls to add new ADC channels.
Will advise when it's back up. |
|
|
14388
|
Mon Jan 7 19:21:45 2019 |
Jon | Configuration | Computer Scripts / Programs | Vac system shutdown | ADC work finished for the day. The vac
controls are back up, with all valves
CLOSED and all pumps OFF. |
|
|
3343
|
Sat Jul 31 22:35:01 2010 |
Koji | Update | VAC | Vac-P1 still 1.2mtorr | I resumed the pumping from 19:00.
Now the valve RV1 is full open. But
the pumping is really slow as we are using |
|
|
14452
|
Thu Feb 14 15:37:35 2019 |
gautam | Update | VAC | Vacromag failure | [chub, gautam]
Sumary:
One of the XT1111 units (XT1111a) |
|
|
14453
|
Thu Feb 14 18:16:24 2019 |
Jon | Update | VAC | Vacromag failure | I sent Gautam instructions to first try
stopping the modbus service, power
cycling the Acromag chassis, then |
|
|
14309
|
Mon Nov 19 23:38:41 2018 |
Jon | Omnistructure | | Vacuum Acromag Channel Assignments | I've completed bench testing of all
seven vacuum Acromags installed in a custom
rackmount chassis. The system contains |
|
|
14296
|
Wed Nov 14 21:34:44 2018 |
Jon | Omnistructure | | Vacuum Acromags installed and tested | All 7 Acromag units are now installed in
the vacuum chassis. They are connected to
24V DC power and Ethernet. |
|
|
14375
|
Thu Dec 20 21:29:41 2018 |
Jon | Omnistructure | Upgrade | Vacuum Controls Switchover Completed | [Jon, Chub, Koji, Gautam]
Summary
Today we carried
out the first pumpdown with the new vacuum |
|
|
14493
|
Thu Mar 21 18:36:59 2019 |
Jon | Omnistructure | Upgrade | Vacuum Controls Switchover Completed | Updated vac channel list is attached. There
are several new ADC channels.
|
|
|
14315
|
Sun Nov 25 17:41:43 2018 |
Jon | Omnistructure | | Vacuum Controls Upgrade - Status and Plans | New hardware has been installed in the
vacuum controls rack. It is shown in the
below post-install photo. |
|
|
13179
|
Wed Aug 9 16:34:46 2017 |
rana | Update | VAC | Vacuum Document recovered | Steve and I found the previous draft of
the 40m Vacuum Document. Someone in 2015
had browsed into the Docs history and then |
|
|
16508
|
Wed Dec 15 15:06:08 2021 |
Jordan | Update | VAC | Vacuum Feedthru Install | Jordan, Chub
We installed the 4x DB25 feedthru
flange on the North-West port of ITMX chamber |
|
|
17312
|
Fri Nov 25 12:15:46 2022 |
Anchal | Update | VAC | Vacuum Gate valves restored | I came today to find that PSL shutter was
closed. I orginially thought some shimmer
obersvations are underway in the quiet state. |
|
|
17797
|
Mon Aug 21 10:56:16 2023 |
JC | Update | VAC | Vacuum Loss of N2 Pressure | There was a loss of N2 pressure over this
weekend. When I came in to check the cylinder
pressures, I was able to hear a hissing sound |
|
|
9017
|
Fri Aug 16 09:35:18 2013 |
Steve | Update | VAC | Vacuum Normal state recognition is back |
|
|
|
16980
|
Fri Jul 8 14:03:33 2022 |
JC | HowTo | VAC | Vacuum Preparation for Power Shutdown | [Koji, JC]
Koji and I have prepared the vacuum
system for the power outage on Saturday. |
|
|
14308
|
Mon Nov 19 22:45:23 2018 |
Jon | Omnistructure | | Vacuum System Subnetwork | I've set up a closed subnetwork for
interfacing the vacuum hardware (Acromags
and serial devices) with the new controls |
|
|
5180
|
Wed Aug 10 22:47:22 2011 |
rana | Summary | VAC | Vacuum Workstation (linux3) re-activated | For some reason the workstation at the
vac rack was off and unplugged. Nicole and
I plugged its power back in to the EX rack. |
|
|
11352
|
Wed Jun 10 15:54:14 2015 |
Steve | Update | VAC | Vacuum comp. rebooted | Koji and Steve succeded rebooting C1vac1,
C1vac2 and pressure reading is working now
More tomorrow ......... |
|
|
11353
|
Thu Jun 11 19:40:59 2015 |
Koji | Update | VAC | Vacuum comp. rebooted | The serial connections to the vacuum gauges
were recovered by rebooting c1vac1 and c1vac2.
Steve claimed that the vacuum screen |
|
|
11354
|
Fri Jun 12 08:40:17 2015 |
Steve | Update | VAC | Vacuum comp. rebooted | Koji and Steve,
One computer expert and one vacuum
expert required. |
|
|
1673
|
Mon Jun 15 15:17:33 2009 |
josephb, Steve | Configuration | VAC | Vacuum control and monitor screens | We updated the vacuum control and monitor
screens (C0VAC_MONITOR.adl and C0VAC_CONTROL.adl).
We also updated the /cvs/cds/caltech/target/c1vac1/Vac.db |
|
|
15499
|
Thu Jul 23 15:58:24 2020 |
Jon | Summary | VAC | Vacuum controls refurbishment plan | This year we've struggled with vacuum
controls unreliability (e.g., spurious interlock
triggers) caused by decaying hardware. Here |
|
|
14419
|
Fri Jan 25 16:14:51 2019 |
gautam | Update | VAC | Vacuum interlock code, N2 warning | I reset the remote of this git repo to
the 40m version instead of Jon's personal
one, to ensure consistency between what's |
|
|
15283
|
Wed Mar 25 15:15:55 2020 |
gautam | Update | VAC | Vacuum interlock code, N2 warning update | The email address in the N2 checking script
wasn't right - I now updated it to email
the 40m list if the sum of reserve tank pressures |
|
|
15501
|
Mon Jul 27 15:48:36 2020 |
Jon | Summary | VAC | Vacuum parts ordered | To carry out the next steps of the vac
refurbishment plan [ELOG
15499], I've ordered parts necessary |
|
|
16312
|
Thu Sep 2 21:21:14 2021 |
Koji | Summary | Computers | Vacuum recovery 2 | Attachment 1:
We are pumping the main volume with
TP2. Once P1a reached the pressure ~2.2mtorr, |
|
|
7272
|
Fri Aug 24 16:03:39 2012 |
Steve | Update | VAC | Vacuum related work at atm | Vacuum related work at atmosphere:
Atm1, Check all chamber dog
clamps tightness with torque wrench, |
|
|
15526
|
Fri Aug 14 10:10:56 2020 |
Jon | Configuration | VAC | Vacuum repairs today | The vac system is going down now for planned
repairs [ELOG
15499]. It will likely take most |
|
|
15527
|
Sat Aug 15 02:02:13 2020 |
Jon | Configuration | VAC | Vacuum repairs today | Vacuum work is completed. The TP2 and TP3
interlocks have been overhauled as proposed
in ELOG |
|
|
8752
|
Wed Jun 26 01:30:31 2013 |
rana | Summary | PEM | Variation in 10-30 Hz seismic RMS | For quite a while (no one knows how long),
we've seen fluctuations in the 10-30 Hz seismic
motion. This shows up as the purple trace |
|
|
828
|
Tue Aug 12 12:21:13 2008 |
josephb | Configuration | Cameras | Variation in fit over 140 images for GC650 and GC750 | Used matlab to calculate Gaussian fits on
145 GC650 images and 142 GC750 images. These
were individual images (no averaging) looking |
|
|
8882
|
Fri Jul 19 22:35:06 2013 |
Koji | Summary | LSC | Various Arm signal (Yarm) | The StripTool plot attached below shows
various arm signals measured with the Y arm
cavity swept using ALS. |
|
|
9685
|
Mon Mar 3 17:35:10 2014 |
Koji | Update | LSC | Various demod phase measurement | I wanted to check how the refl signals
looked like.
I decided to measure the demod phase |
|
|
2556
|
Mon Feb 1 18:33:10 2010 |
steve | Update | MOPA | Ve half the lazer! | The 2W
NPRO from Valera arrived today and I haf |
|
|
17036
|
Tue Jul 26 19:50:25 2022 |
Deeksha | Update | Computer Scripts / Programs | Vector fitting | Trying to vectfit to the data taken from
the DFD previously but failing horribly.
I will update this post as soon as I get |
|
|
17038
|
Tue Jul 26 21:16:41 2022 |
Koji | Update | Computer Scripts / Programs | Vector fitting | I think the fit fails as the measurement
quality is not good enough.
|
|
|
16955
|
Tue Jun 28 16:26:58 2022 |
Cici | Summary | General | Vector fitting open loop transfer function/Audio cancellation of optical table enclosure | [Deeksha, Cici]
We attempted to use vectfit to
fit our earlier transfer function data, and |
|
|
14064
|
Fri Jul 13 10:54:55 2018 |
aaron | Update | VAC | Vent 80 | [aaron, steve]
Steve gave me a venting tutorial.
I'll record this in probably a bit more |
|
|
14066
|
Fri Jul 13 16:26:52 2018 |
Steve | Update | VAC | Vent 80 is completing... | Steve and Aaron,
6 hrs vent is reaching equlibrium
to room air. It took 3 and a half instrument |
|
|
14081
|
Wed Jul 18 03:14:48 2018 |
Annalisa | Update | General | Vent 80 recovery | [Gautam, Johannes, Koji, Annalisa]
Tonight we increased the power
of the PSL laser and we achieved the lock |
|
|
14084
|
Wed Jul 18 23:43:50 2018 |
Koji | Update | General | Vent 80 recovery | Is the reflector too close to the beam
and causing clipping?
|
|
|
14305
|
Mon Nov 19 14:59:48 2018 |
Chub | Update | VAC | Vent 81 | Vent 80 is nearly complete; the instrument
is almost to atmosphere. All four ion
pump gate valves have been disconnected, |
|
|
14306
|
Mon Nov 19 17:09:00 2018 |
Steve | Update | VAC | Vent 81 | Gautam, Aaron, Chub and Steve,
|
|
|
14318
|
Mon Nov 26 15:58:48 2018 |
Steve | Update | VAC | Vent 81 | Gautam, Aaron, Chub & Steve,
ETMY heavy door replaced by light
one. |
|
|
14398
|
Mon Jan 14 10:06:53 2019 |
gautam | Update | VAC | Vent 82 complete | [chub, gautam]
IFO pressure was ~2e-4 |
|
|
12233
|
Thu Jun 30 16:11:57 2016 |
ericq | Update | General | Vent Prep | I have updated
the vent
prep checklist on the wiki. Gautam and |
|
|
12235
|
Thu Jun 30 21:24:36 2016 |
ericq | Update | General | Vent Prep | Steve has ordered some teflon parts to
take the place of the metal parts in his
acetone-soaking jig. They should arrive tomorrow. |
|
|
15649
|
Wed Oct 28 20:42:53 2020 |
Koji | Update | General | Vent Prep |
Two arms / BS / PRM / SRM were
aligned. (Attachment 1)
IMC
was aligned by WFS and the WFS offsets were |
10x |
|
15651
|
Thu Oct 29 12:43:35 2020 |
gautam | Update | General | Vent Prep |
Oplev HeNe at ETMY was replaced,
see here
for my earlier discussion on this.
I |
|