 Fri Nov 22 16:32:08 2013, Steve, Update, VAC, RGA scan at day 108 
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Fri Dec 13 16:34:20 2013, Steve, Update, VAC, PS will be replaced next week
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Instrument rack power supplies checked and labeled at present loads. |
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Fri Dec 20 20:04:01 2013, Steve, Update, VAC, power supply replaced with a short vent
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Fri Dec 20 23:00:41 2013, Koji, Update, VAC, power supply replaced with a short vent
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I'm leaving the 40m now. IFO is aligned. Everything look good.
- The main volume P1=5e-4, CC1=1.4e-5 is still pumped by TP1 and TP2
- RGA P4<0e-4, CC4 2.1e-7, is pumped by TP3 |
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Sat Dec 21 10:53:35 2013, Steve, Update, VAC, power supply replaced with a short vent-pumpdown completed
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The recovery- pumpdown reached valve configuration vacuum normal at 20 hours, cc1 7.7e-6 Torr
Lesson learned: turn all pumps off, close all valves before you reboot
! like you |
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Thu Jan 2 10:50:24 2014, Steve, Update, VAC, vacuum monitor is still blank
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The date is correct on this monitor.
Last stored RGA scan data Dec 20, 2013
IFO pressure at CC1 5.8e-6 Torr |
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Thu Jan 2 13:35:06 2014, Koji, Update, VAC, vacuum monitor is still blank
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| We probably need to restart the machine, but I didn't want to touch c1vac1 and c1vac2. |
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Fri Jan 3 11:18:41 2014, Steve, Summary, VAC, power supply replaced with a short vent
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Mon Jan 13 16:50:55 2014, Steve, Update, VAC, Maglev controller needs service
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The date is correct on this monitor. |
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Tue Jan 21 17:26:59 2014, Jenne, Summary, VAC, Rebooted RGA computer and reset RGA settings
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[Jenne, Steve]
Steve noticed that the RGA was not logging data and that not all the correct connection lights were on, and he wasn't able to run the "RGAset.py"
script (in ...../scripts/RGA/) that sets up the proper parameters. |
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Wed Jan 22 15:24:11 2014, Steve, Summary, VAC, Rga scan after reboot
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[Jenne, Steve] |
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Thu Jan 23 08:04:04 2014, Steve, Update, VAC, vacuum control screen is blank
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There is BLANK VacControl_BAK.adl
screen only. |
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Thu Jan 23 13:23:10 2014, Steve, Update, VAC, 40m IFO is at atmosphere
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Mon Jan 27 09:08:00 2014, Steve, Update, VAC, 4 days at atmosphere
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Tue Jan 28 11:13:50 2014, Koji, Update, VAC, vacuum monitor is still blank
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[Steve Koji]
We pushed the reset button of c1vac1 and c1vac2 and the vacuum screen is back.
First, we pushed the reset button of c1vac1 and pushed the one on c1vac2. |
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Tue Jan 28 16:26:40 2014, Steve, Update, VAC, vacuum computers are back without safety
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[Steve Koji] |
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Wed Feb 5 08:14:59 2014, Steve, Update, VAC, vacuum computers are back without safety
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Wed Feb 5 19:36:50 2014, Steve, Update, VAC, pumpdown at 25 Torr
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[Steve, Manasa] |
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Wed Feb 5 19:53:51 2014, Steve, Update, VAC, pumpdown stops for the day at 14 Torr
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Thu Feb 6 11:14:07 2014, Steve, Update, VAC, pumpdown completed
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Pumpdown completed. IR shutter opened at P1 1 mTorr The block is still in the beam path.
Remember to protect MCR pd before crack up the PSL power.
The ion pump gate valves were just closed by cc1 triggered interlock |
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Mon Feb 10 09:45:53 2014, Steve, Update, VAC, vacuum normal is reached
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Tue Feb 11 10:44:15 2014, Steve, Update, VAC, RGA scan at day 6
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Tue Feb 18 10:38:55 2014, Steve, Update, VAC, RGA scan at day 13
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All normal.
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Fri Mar 7 16:13:03 2014, Steve, Update, VAC, pumping speed is recovered
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Wed Mar 12 08:40:42 2014, Steve, Update, VAC, RGA scan at day 35
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Mon Mar 24 10:41:46 2014, Steve, Update, VAC, RGA scan at day 50
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 Mon Mar 24 19:42:12 2014, Charles, Frogs, VAC, Power Failure
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The 40m experienced a building-wide power failure for ~30 seconds at ~7:38 pm today.
Thought that might be important... |
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Tue Mar 25 14:52:57 2014, steve, Update, VAC, vacuum is recovered
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Out gassing plus leak rate 0.15 mTorr / hour
The pressure rose to 2.5 mTorr in 17 hours
V1 was opened at 1:56pm |
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Fri Mar 28 16:26:20 2014, steve, Update, VAC, RGA scan after power failure
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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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Thu Apr 3 17:05:52 2014, Steve, Update, VAC, Maglev controller swapped
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Thu Apr 10 16:09:29 2014, Steve, Update, VAC, RGA scan at 75% pumping speed
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Mon Apr 21 10:14:00 2014, Steve, Update, VAC, Maglev controller serviced
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Tue Apr 29 16:42:29 2014, Steve, Update, VAC, TP2 drypump replaced
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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 |
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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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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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[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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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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