| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12086
|
Thu Apr 21 15:12:38 2016 |
Steve | Update | VAC | RGA is not working |
|
|
|
12115
|
Wed May 11 16:39:01 2016 |
ericq | Update | VAC | c0rga alive, output wonky |
|
|
|
12116
|
Thu May 12 14:29:58 2016 |
gautam | Update | VAC | RGA back up and running | It looks like the hardware reset did the
trick. Previously, I had just tried ssh-ing
into c0rga and rebooting it. At the time, |
|
|
12117
|
Sun May 15 19:48:08 2016 |
Steve | Update | VAC | run out of N2 | 3-4 hrs ago we run out of nitrogen. We
are back to Vacuum Normal
|
|
|
12119
|
Tue May 17 14:46:51 2016 |
Steve | Update | VAC | RGA scan at day 595 | We have good RGA scan now. There was no
scan for 3 months. |
|
|
12174
|
Tue Jun 14 10:13:34 2016 |
Steve | Update | VAC | temporary N2 supply line | The drill room floor will be retiled Thursday,
June 16. Temporary nitrogen line set up will
allow emptying the hole area. |
|
|
12195
|
Fri Jun 17 15:22:31 2016 |
gautam | Update | VAC | N2 supply line restored after retiling |
|
|
|
12237
|
Fri Jul 1 09:20:44 2016 |
Steve | Update | VAC | vent 78 | VENT
OBJECTIVES:
1, Fix ETMX sus "jump issue" |
|
|
12238
|
Fri Jul 1 15:48:10 2016 |
Steve | Update | VAC | vent 78 at 710 Torr | I just disconnected the 6th instrument
grade air cylinder from the vacuum envelope
at 720 Torr. Now it will reach equilibrium |
|
|
12248
|
Wed Jul 6 08:34:00 2016 |
Steve | Update | VAC | RGA scan at day 639 | The last RGA scan of this pumpdown 78
Pressure plot of 640 days long
pd 78 |
|
|
12250
|
Wed Jul 6 10:58:07 2016 |
Steve | Update | VAC | vent 78 valve configuration | Vacuum Status: Chamber Open
All chamber annuloses are vented.
Vac Monitor screen is not communicating with |
|
|
12293
|
Tue Jul 12 18:13:19 2016 |
Koji | Update | VAC | N2 bottle replaced | Gautam, Koji
We replaced the right N2 bottle
as it was empty. |
|
|
12314
|
Wed Jul 20 11:39:07 2016 |
Steve | Update | VAC | vent 78 day 20 | RGA background scan
|
|
|
12337
|
Tue Jul 26 14:24:38 2016 |
Koji | Summary | VAC | Purge compressed air system at LHO | I've visited the purge clean
air system at LHO Yarm mid-station with John
Worden. |
12x |
|
12338
|
Tue Jul 26 16:01:32 2016 |
Steve | Summary | VAC | Purge compressed air system | Thanks for checking this out Koji
The builder in 1996 was Process
System International, Inc ( Westborough, |
|
|
12339
|
Tue Jul 26 17:41:59 2016 |
Koji | Summary | VAC | Purge compressed air system | We have no number for the CFM without calculation.
We can't assume a random number like
10-15 |
|
|
12483
|
Mon Sep 12 17:54:24 2016 |
Steve | Update | VAC | pumpdown 79 | We are pumping down. The annuloses
are below 10 mTorr
The vacuum gauges are not communicating |
|
|
12487
|
Tue Sep 13 16:16:28 2016 |
Chris | Omnistructure | VAC | vacuum interlock bypassed | (Steve, Chris)
The pumpdown had stalled because
of some ancient vacuum interlock code that |
|
|
12488
|
Tue Sep 13 17:47:04 2016 |
Steve | Update | VAC | pumpdown 79 completed | P1 IFO pressure is 1 mTorr, valve configuration: vacuum normal,
annulosses are pumped, RGA is off, not pumped. |
|
|
12492
|
Wed Sep 14 09:44:09 2016 |
Steve | Update | VAC | pumpdown 79 completed | The pumpdown started at
9-12-2016
The IFO is at 5e-5 Torr vacuum |
|
|
12496
|
Thu Sep 15 10:36:32 2016 |
Steve | Update | VAC | pumpdown 79 day 3 | IFO pressure 3.7e-5 Torr at new cold cathode
InstruTech - Hornet
New |
|
|
12525
|
Fri Sep 30 10:37:57 2016 |
Steve | Update | VAC | vacuum VME machines rebooted | [ Gautam and Steve ]
c1vac1 and c1vac2 were rebooted
and the gauges are communicating now. V1, |
|
|
12530
|
Tue Oct 4 11:02:31 2016 |
Steve | Update | VAC | RGA is out of order | The last good rga scan at vent 78
day 38
|
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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
|
|
|
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. |
|
|
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 |
|
|
12633
|
Tue Nov 22 11:31:52 2016 |
Steve | Update | VAC | RGA is running again | The Rga was turned on yesterday.
|
|
|
12636
|
Wed Nov 23 11:32:13 2016 |
Steve | Update | VAC | TP3 drypump replaced again | TP3 drypump replaced at 655 mTorr, no load,
tp3 0.3A
This seal lasted only for 33 days |
|
|
12642
|
Mon Nov 28 09:45:44 2016 |
Steve | Update | VAC | RGA scan at pumpdown day 40 | The vacuum envelope ~1 C warmer today than
7 days ago. Bad peaks are coming down as
normal. |
|
|
12681
|
Thu Dec 22 09:37:20 2016 |
Steve | Update | VAC | RGA scan at day 63 | Valve configuration: vacuum normal
RGA head temp: 43.5 C
Vac envelope temp: 23 C |
|
|
12698
|
Tue Jan 10 14:24:09 2017 |
Steve | Update | VAC | RGA scan at day 82 | Valve configuration: vacuum normal
Vacuum envelope: 23C
Rga head: 44C |
|
|
12774
|
Tue Jan 31 14:14:29 2017 |
rana | Update | VAC | Pressure watch script | I think this cron job is running on NODUS
(our gateway) instead of our scripts machine:
p.p1 {margin: |
|
|
12853
|
Mon Feb 27 15:33:10 2017 |
Steve | Update | VAC | RGA scan at day 130 | Valve configuration: vacuum normal
Vacuum envelope: 23.5 C
RGA head: 46.6 C |
|
|
13047
|
Wed Jun 7 11:32:56 2017 |
Steve | Update | VAC | smooth vac reboot | Gautam and Steve,
The medm monitor & vac control |
|
|
13075
|
Tue Jun 20 16:28:23 2017 |
Steve | Update | VAC | RGA scan | |
|
|
13132
|
Sun Jul 23 15:00:28 2017 |
Jamie | Omnistructure | VAC | strange sound around X arm vacuum pumps | While walking down to the X end to reset
c1iscex I heard what I would call a "rythmic
squnching" sound coming from under the |
|
|
13134
|
Mon Jul 24 09:55:29 2017 |
Steve | Omnistructure | VAC | controller failer | Ifo pressure was 5.5 mTorr this Monday
morning. The PSL shutter was still open.
TP2 controller failed. Interlock closed V1, |
|
|
13142
|
Tue Jul 25 08:48:57 2017 |
Steve | Update | VAC | RGA scan at d278 | The RGA did not shut down at the turbo
pump controller failing.
|
|
|
13143
|
Tue Jul 25 14:04:06 2017 |
Steve | Update | VAC | turbo controller installed and we are running at vac normal | Gautam and Steve,
Spare Varian turbo-V 70 controller,
Model 969-9505, sn 21612 was swapped in. |
|
|
13171
|
Tue Aug 8 17:04:26 2017 |
Steve | Update | VAC | unintended pump down | IFO pressure 2 Torr, PSL
shutter closed. I'm pumping down
with 2 roughing pumps with ion pump gate |
|
|
13172
|
Tue Aug 8 17:44:11 2017 |
Steve | Update | VAC | unintended pump down | Pumpdown stopped for over night at
~ 1 Torr
The roughing line disconnected. |
|
|
13175
|
Wed Aug 9 11:59:51 2017 |
Steve | Update | VAC | unintended pump down at vacuum normal | pd80b has reached Vac Normal. IFO pressure
0.5 mTorr
We need our vauum channels back |
|
|
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 |
|
|
13186
|
Thu Aug 10 15:45:34 2017 |
Steve | Update | VAC | accidental vent to 17 Torr | Finally we got the cold cathode gauge working.
IFO pressure 7e-6 Torr-it, vacuum normal
valve configuration with all 4 ion pump gate |
|
|
13233
|
Mon Aug 21 14:53:32 2017 |
gautam | Update | VAC | RGA reset | [gautam, steve]
In the aftermath of the accidental
vent, it looks like the RGA was shutdown. |
|
|
13234
|
Mon Aug 21 16:35:48 2017 |
gautam | Update | VAC | UPS checkup | [steve, gautam]
At Rolf/Rich Abbott's request,
we performed a check of the UPS today. |
|