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  40m Log, Page 324 of 327  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  1511   Thu Apr 23 16:38:33 2009 steveUpdateVACvac valve relay box is shortingBen and I found this vacuum valve relay
box intermittently shorthing yesterday.
It effects V4, V5, VA6 and VM1........
 vacrel.png 
  7547   Mon Oct 15 13:07:51 2012 jamieUpdateVACvacuum VME crate broken, replaced, minor vacuum mayhem ensuesSteve and I managed to access the fuse
in the vacuum VME crate, but replacing it
did not bring it back up.  We decided
  
  11703   Tue Oct 20 16:27:04 2015 ericqUpdateVACvacuum VME machines rebooted[ericq, Gautam, Steve]

Following roughly the same procedure
as ELOG
  
  12525   Fri Sep 30 10:37:57 2016 SteveUpdateVACvacuum VME machines rebooted[ Gautam and Steve ]

c1vac1 and c1vac2 were rebooted
and the gauges are communicating now. V1,
 rebooted.png 
  2648   Mon Mar 1 11:21:50 2010 steveConfigurationVACvacuum contoller is back to normal


   
        
            
  
  9570   Thu Jan 23 08:04:04 2014 SteveUpdateVACvacuum control screen is blank 
There is 
 pd76m170d2dRgaOn.png 
  11960   Fri Jan 29 09:59:23 2016 SteveUpdateVACvacuum control upgradeRana stated yesterday that there will be
a vacuum control update in the close future.
Witnesses : Rich, Chris and Dave
 1100days.png 
  11706   Wed Oct 21 15:42:56 2015 SteveUpdateVACvacuum gauge checkConvectron gauge check:

Brand new 10 years old convectron
gauge at atm was swapped into the place of
 Gauges.png 
  13664   Mon Mar 5 10:13:21 2018 gautamUpdateVACvacuum healthIn Steve's absence, I've tried
to keep an eye on the health of the vacuum
system. From Attachment #1, the pressure
 VacuumStatus.png 
  12487   Tue Sep 13 16:16:28 2016 ChrisOmnistructureVACvacuum interlock bypassed(Steve, Chris)

The pumpdown had stalled because
of some ancient vacuum interlock code that
  
  2624   Mon Feb 22 11:38:05 2010 joe, jenne and steveConfigurationVACvacuum is back to normalMorning condition: vacuum rack power is
still off, no MEDM screen reading.....meaning
unknown vacuum pressure.We closed PSL shutter
  
  5962   Sun Nov 20 13:51:54 2011 steveUpdateVACvacuum is back up after ac interruptionState condition: Vac Normal,         
CC1 ~8e-6 Torr
The IFO pressure peaked at 
 notpumping.png 
  7549   Mon Oct 15 17:08:01 2012 SteveUpdateVACvacuum is back with some disabled valves

    

       
            
 VMEcrateout.pngIMG_1725.JPGwarning.pngshortcomings.jpg 
  10845   Sun Dec 28 07:29:16 2014 SteveUpdateVACvacuum is normal

    

       
            
 3d.png 
  9749   Tue Mar 25 14:52:57 2014 steveUpdateVACvacuum is recovered Out
gassing plus leak rate   0.15 
 17hrsNoPumping.png 
  9615   Mon Feb 10 09:45:53 2014 SteveUpdateVACvacuum normal is reached 


 pd77m5d.png13daysAtm.png 
  13268   Tue Aug 29 15:35:19 2017 SteveUpdateVACvacuum pump specifications & manualsRP1 and RP3 roughing pump manual of
Leybold D30A oily rotory pump

Fore pump of
 1759489_995814a9-55c1-4fa1-b333-f446d272c1cc.jpg 
  7605   Wed Oct 24 09:15:12 2012 SteveUpdateVACvacuum rack 24V ps was current limited

    

       
            
 currentlimited24V.jpg 
  5590   Fri Sep 30 18:35:42 2011 steve, kiwamuUpdateVACvacuum set for poweroutageWe did the following:
1, closed V1, VM1,  annuloses:
VASE, VASV, VABS, VAEV,  VAEE and VA6
 prepforpoweroutage.png 
  13245   Wed Aug 23 10:11:46 2017 SteveUpdateVACvacuum valve specificationsThe V1
gate valve specs installed at 40m wiki
page. VAT model number 10846-UE44-0007 Our
  
  4059   Wed Dec 15 16:04:49 2010 steveConfigurationVACvacuum valves found in default conditionThis condition is created when we run out
of nitrogen that holds the valves in set
positions. The Maglev and other turbos are
  
  3009   Fri May 28 13:32:01 2010 alberto, kiwamuUpdateVACvacuum workWe started
a vacuum work in this morning. And still
  
  3010   Fri May 28 13:51:51 2010 JenneUpdateVACvacuum work


   
        
            
  
  3011   Fri May 28 14:24:30 2010 JenneUpdateVACvacuum workI just got off the phone with Alberto and
Kiwamu, and I'm going to try to recalculate
things based on their measurements of the
  
  2613   Thu Feb 18 15:39:16 2010 Koji and SteveConfigurationVACvalve condition: ALL OFFAs preparation for the upcoming planned
power outage we turned turbos, RGA off and
closed valves.
  
  5104   Wed Aug 3 09:40:13 2011 steveUpdateVACventThe vacuum system is coming up to atm.
The vent was started with slow N2 flow. The
PSL output is blocked 2 places on the table.
 pzt2011Aug3.png 
  44   Thu Nov 1 09:17:27 2007 steveRoutineVACvent 64Yesterday before vent I could not lock  MC,
therfore I could not measure the 
transmitted power at MC2 
 vent64.jpg 
  10559   Thu Oct 2 09:23:23 2014 SteveUpdateVACvent 77

    

       
            
 vent77SRMmoved.png 
  12237   Fri Jul 1 09:20:44 2016 SteveUpdateVACvent 78  VENT
OBJECTIVES:

1, Fix ETMX sus "jump issue"
 vent78.pngvent78at250T.png 
  12314   Wed Jul 20 11:39:07 2016 SteveUpdateVACvent 78 day 20RGA background scan




 vent78-d20.png 
  12383   Mon Aug 8 10:35:12 2016 SteveUpdatePEMvent 78 day 38 




 Vent38days.pngvent78d40RgaBg.png 
  12250   Wed Jul 6 10:58:07 2016 SteveUpdateVACvent 78 valve configurationVacuum Status: Chamber Open

All chamber annuloses are vented. 
Vac Monitor screen is not communicating with
 CamberOpen.png 
  12238   Fri Jul 1 15:48:10 2016 SteveUpdateVACvent 78 at 710 TorrI just disconnected the 6th instrument
grade air cylinder from the vacuum envelope
at 720 Torr. Now it will reach equilibrium
 pd78at710T.png 
  12559   Thu Oct 13 16:48:34 2016 SteveUpdateVACvent 79 is completedIFO is at atmosphere. The MC can be locked
in air now.

The doors will be coming off tomorrow
 vent_79.png 
  12557   Thu Oct 13 09:30:38 2016 SteveUpdateGeneralvent 79 is happening


 vent79precond.pngventing.png 
  10536   Thu Sep 25 08:21:15 2014 SteveUpdateVACvent day 1

    

       
            
 ventDay1.png 
  10542   Fri Sep 26 09:13:17 2014 SteveUpdateSUSvent day 2 ITMY in vac table needs leveling.  ventDay2.pngITMY.png 
  7594   Tue Oct 23 08:45:00 2012 SteveUpdateVACvent day 3

    

       
            
 ventd4.pngIMG_1743.JPG 
  10547   Mon Sep 29 09:11:25 2014 SteveUpdateVACvent day 5 RGA scan 
 
 v77_bg-mag-d5.png 
  2635   Tue Feb 23 19:00:45 2010 kiwamuConfigurationVACvent finishedThe vent has been
finished.
  
  3259   Wed Jul 21 12:41:31 2010 kiwamuUpdateVACvent finishedThe vent
has been finished successfully in this morning.
  
  3266   Thu Jul 22 08:07:27 2010 steveUpdateVACvent finished

    
        
 30hvent.jpg 
  6889   Thu Jun 28 20:59:28 2012 yutaBureaucracyLockingvent for PRC check, TOMORROW!Koji, Jamie and I talked together and I decided to VENT TOMORROW   
  6890   Thu Jun 28 22:08:57 2012 JenneBureaucracyLockingvent for PRC check, TOMORROW!

    

       
            
  
  6891   Fri Jun 29 01:49:36 2012 yutaBureaucracyLockingvent for PRC check, TOMORROW!

    

       
            
  
  7849   Tue Dec 18 10:43:20 2012 SteveUpdateVACvent has completed The 40m vacuum envelope is at atm   
It took 4.5 hours at ~3 Torr/min speed. Atm1
 
 vent74.pngbvent.pngbefVent.png 
  7582   Fri Oct 19 16:45:39 2012 SteveUpdateVACvent has started

    

       
            
  
  7584   Fri Oct 19 19:26:42 2012 JenneUpdateVACvent has started

    

       
            
  
  5111   Wed Aug 3 16:18:30 2011 steveUpdateVACvent is almost finishedP1 at 750 Torr,  Vent valve VV1 is
left open to atm. It will reach equilibrium
in an hour. The PSL power is not turned down
 vent8h.jpg 
  2636   Tue Feb 23 19:07:43 2010 kiwamu and steveConfigurationVACvent is completed

    
        
 vent2010feb23.jpg 
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