 Fri Mar 28 16:26:20 2014, steve, Update, VAC, RGA scan after power failure 
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Quote:
Out gassing plus leak rate 0.15 mTorr / hour |
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Wed Apr 2 16:34:15 2014, Steve, Update, VAC, Maglev controller needs service
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Quote:
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Thu Apr 3 17:05:52 2014, Steve, Update, VAC, Maglev controller swapped
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Quote:
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Thu Apr 10 16:09:29 2014, Steve, Update, VAC, RGA scan at 75% pumping speed
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Quote:
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Mon Apr 21 10:14:00 2014, Steve, Update, VAC, Maglev controller serviced
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Quote:
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Tue Apr 29 16:42:29 2014, Steve, Update, VAC, TP2 drypump replaced
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Quote:
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Tue May 27 11:00:43 2014, Steve, Update, VAC, RGA scan at day 111
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Rga scan at pump down 77, vacuum normal valve configuration, maglev rotation 560 Hz and day 111 |
 Mon Jun 30 10:06:39 2014, Steve, Update, VAC, low on pneumatic pressure of vacuum valves
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This morning valve condition: V1, VM1, V4 and V5 valves were closed. IFO pressure rose to 1.3 mTorr
It was caused by low N2 pressure. Our vacuum valves are moved-controlled by 60-70 PSI of nitrogen.
When this supply drops below 50-60 PSI the interlock closes V1 valve. This is the minimum pressure required to move the large valves. |
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Wed Jul 2 11:47:26 2014, Steve, Update, VAC, broken changeover regulator of N2 supply
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Quote:
This morning valve condition: V1, VM1, V4 and V5 valves were closed. IFO pressure rose to 1.3 mTorr |
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Mon Jul 21 10:51:06 2014, Steve, Update, VAC, N2 supply run out
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Interlock closed valve V1, V4, V5 and VM1 when the nitrogen supply run out. The IFO pressure rose to P1 1 mTorr
In order to recover Vacuum Normal valve configuration I did the following:
Replaced both nitrogen cylinders. Confirmed pneumatic nitrogen pressure 70 PSI. Opened valves V4 and V5 |
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Thu Aug 21 15:07:48 2014, Steve, Update, VAC, RGA scan at day 197
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Mon Sep 22 15:20:32 2014, Steve, Update, VAC, RGA scan at day 229
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Wed Sep 24 08:40:29 2014, Steve, Update, VAC, Vent has started
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Jam nuts checked. Oplev servos turned off. Particle count checked. Vertex crane functionality checked. |
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Wed Sep 24 13:28:48 2014, Steve, Update, VAC, vent is completed
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| The vent is completed. ITMX was kicked up accidentally. Valve configuration: chamber open, RGA is pumped through VM2 Maglev |
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Wed Sep 24 16:02:58 2014, Jenne, Update, VAC, vent is completed
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[Steve, EricQ, Jenne]
ITMY and BS heavy doors are off, light doors are on. Q is aligning the IFO. |
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Thu Sep 25 08:21:15 2014, Steve, Update, VAC, vent day 1
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Quote:
[Steve, EricQ, Jenne] |
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Mon Sep 29 09:11:25 2014, Steve, Update, VAC, vent day 5 RGA scan
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Mon Sep 29 10:29:25 2014, Steve, Update, VAC, RGA is not running
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The RGA time stamp was correct last at 20140527
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Tue Sep 30 16:18:57 2014, Steve, Update, VAC, pump down #78 has started
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Q checked the earth quake stops of SRM and we put the ITMY & BS doors on. |
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Tue Sep 30 18:02:53 2014, Steve, Update, VAC, pump down #78 stops at 320 Torr
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We stopped pumping just short of 3 hours at 320 Torr. Pumping speed was 2.7 Torr / min with partially closed RV1 and butterfly valve/
RP1&3 roughing pump hose is disconnected. Butterfly valve removed. The vac envelope is closed. |
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Wed Oct 1 10:21:19 2014, Steve, Update, VAC, pump down #78 stops at 3.5 Torr
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Quote:
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Wed Oct 1 16:26:53 2014, Steve, Update, VAC, pump down #78 completed
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Pump down reached "vacuum normal" state. IFO _P1 pressure 1e-4 torr in 8 hrs actual pumping time
PSL shutter is opened. |
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Thu Oct 2 09:23:23 2014, Steve, Update, VAC, vent 77
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Quote:
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Fri Oct 3 10:10:37 2014, Steve, Update, VAC, cold cathode gauge reading switched
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We have two cold cathode gauges at the pump spool and one signal cable to controller. CC1 in horizontal position and CC1 in vertical
position. |
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Mon Oct 6 10:23:43 2014, Steve, Update, VAC, Unexpected power shutdown
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Quote:
We had an unexpected power shutdown for 5 sec at ~ 9:15 AM. |
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Tue Oct 7 16:55:16 2014, Steve, Update, VAC, Unexpected sweaty valves
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Pump spool valves V5, V4, V3 sweating a lot. VM3 and VC2 not so much.
They are VAT valves F28-62887-03, 11, 14 and so on ~15-16 years old.
I'm speculating that some plastic is aging-braking down
at the atmospheric-pneumatic side of valves. |
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Wed Oct 8 08:46:57 2014, Steve, Update, VAC, VAT valves actuator lubricant
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Pump spool valves V5, V4, V3 sweating a lot. VM3 and VC2 not so much. |
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Thu Oct 9 11:56:35 2014, Steve, Update, VAC, Power outage II & recovery
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Post 30-40min unexpected power outage this morning, Steve checked the status of the vacuum and I powered up Chiara. |
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Thu Oct 9 17:33:28 2014, Steve, Update, VAC, Power outage II & recovery
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Fri Oct 10 14:41:04 2014, Steve, Update, VAC, Power outage II & recovery
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Mon Oct 13 14:44:52 2014, Steve, Update, VAC, RGA scan pd78 -day 13
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Our first RGA scan since May 27, 2014 elog10585
The Rga is still warming up. It was turned on 3 days ago as we recovered from the second power outage.
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Mon Dec 1 17:13:57 2014, Steve, Update, VAC, RGA scan pd78 -day 63
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Quote:
Our first RGA scan since May 27, 2014 elog10585 |
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Tue Dec 23 14:33:24 2014, Steve, Update, VAC, Chiara gets UPS
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Quote:
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Tue Dec 23 15:37:32 2014, Steve, Update, VAC, TP3 drypump replaced
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Fri Dec 26 17:45:21 2014, Steve, Update, VAC, vac pressure rose to 1.3 mTorr
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We run out of N2 for the vacuum system. The pressure peaked at 1.3 mTorr with MC locked. V1 did not closed because the N2 pressure sensor failed.
We are back to vac normal. I will be here tomorrow to check on things. |
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Sun Dec 28 07:29:16 2014, Steve, Update, VAC, vacuum is normal
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Quote:
We run out of N2 for the vacuum system. The pressure peaked at 1.3 mTorr with MC locked. V1 did not closed because the N2 pressure sensor |
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Tue Feb 3 15:20:13 2015, Steve, Koji, Update, VAC, Pneumatic pressure is being read again
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[Koji, Steve]
Summary
The N2 pressure reading (C1:VAC-N2PRES) is now up-to-date after rebooting c1vac1. |
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Sun Mar 22 18:42:40 2015, Steve, Update, VAC, vac pressure rose to 1.2mTorr
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We run out of N2 for |
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Mon Mar 23 10:36:55 2015, ericq, Update, VAC, Pressure watch script
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Based on Jenne's chiara disk usage monitoring script, I made a script that checks the N2 pressure, which will send an email to myself, Jenne, Rana,
Koji, and Steve, should the pressure fall below 60psi. I also updated the chiara disk checking script to work on the new Nodus setup. I tested the
two, only emailing myself, and they appear to work as expected. |
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Fri Mar 27 10:38:40 2015, steve, Update, VAC, vac rack UPS battery replaced
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Batteries replaced after 3.5 years with Amstron AP-1250F2, 8x 12V 6Ah
Quote:
APC Smart -UPS 2200 |
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Tue Mar 31 09:03:32 2015, Steve, Update, VAC, RGA scan pd78 day 182
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Fri Apr 24 17:30:32 2015, Jenne, Update, VAC, Pressure watch script broken
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Quote:
I made a script that
checks the N2 pressure, which will send an email to myself, Jenne, Rana, Koji, and Steve, should the pressure fall below 60psi. |
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Sat Apr 25 18:50:47 2015, ericq, Update, VAC, Pressure watch script broken
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Ugh, this turns out to be because cron doesn't source the controls bashrc that defines where to find caget and all that jazz that many commands depend
on. This is probably also why the AutoMX cron job isn't working either.
Also, cron automatically emails everything from stderr to the email address that is configured for the user, which is why the n2 script blew |
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Mon Apr 27 14:37:55 2015, Steve, Update, VAC, N2 pneumatic pressure watch
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Based on Jenne's |
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Mon Apr 27 21:42:07 2015, rana, Update, VAC, Summary pages
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We want to have a VAC page in the summaries, so Steve
- please put a list of important channel names for the vacuum system into the elog so that we can start monitoring for trouble.
Also, anyone that has any ideas can feel free to just add a comment to the summary pages DisQus comment section with the 40m shared account or |
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Tue Apr 28 09:49:26 2015, Steve, Update, VAC, Vac Summery Channels
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Thu Apr 30 16:30:25 2015, Steve, Update, VAC, N2 pneumatic pressure watch set up
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We have 2 transduser PX303-3KG5V http://www.omega.com/pressure/pdf/PX303.pdf They
will be installed on the out put of the N2 cylinders to read the supply pressure.
I will order one DC power supply http://www.omega.com/pptst/PSU93_FPW15.html |
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Tue May 5 16:02:57 2015, Steve, Update, VAC, Vac Summery Channels with discription
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As it was requested by the Bos.
It would be nice to read from the epic screen C1:Vac-state_mon.......Current State: Vacuum Normal, valve configuration
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Fri May 8 14:30:09 2015, Steve, Update, VAC, CC1 cold cathode gauges are baked now
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CC1s are not reading any longer. It is an attempt to clean them over the weekend at 85C
These brand new gauges "10421002" sn 11823-vertical, sn 11837 horizontal replaced 11 years old 421 http://nsei.missouri.edu/manuals/hps-mks/421%20Cold%20Cathode%20Ionization%20Guage.pdf
on 09-06-2012 http://nodus.ligo.caltech.edu:8080/40m/7441 |
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Tue May 12 14:57:52 2015, Steve, Update, VAC, CC1 cold cathode gauges are baked now
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Baking both CC1 at 85 C for 60 hrs did not help.
The temperature is increased to 125 C and it is being repeated.
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