 Fri Jul 21 17:18:19 2006, Willy Andersson, Quench Recovery, Opened HIC142 fully open
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| Power leads have flatlined but still building LHe level. |
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Fri Jul 21 14:08:04 2006, Doug Preddy, Quench Recovery, switch to series mode
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| Coils temps <10K.Switching to series mode. |
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Fri Jul 21 07:39:37 2006, Doug Preddy, Quench Recovery, Cool down continues
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| Raised PIC229 to 11Bar. Started to close HIC155. Cooling rates improve. |
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Thu Jul 20 13:34:26 2006, Willy Andersson, Quench Recovery, cold return mode continues...
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Even though cr_c1 and cr_c12 have begun to tick down, cr_c7 and cr_c6 are
actually ticking up. This is probably a wave of warming propagating through
the solenoid. As long as the two inlets are falling in temperature then
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Thu Jul 20 13:27:21 2006, Willy Andersson, Quench Recovery, cold return mode continues...
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cr_c1 and cr_12 are both at about 45K and heading slowly down, so the
gamble of going to // cold return worked. Maximum opening of CV155 is
limited by CV204 goes fully closed and suction pressure begins to rise
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Thu Jul 20 13:21:57 2006, Willy Andersson, Quench Recovery, started // warm return flow.
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TIC121 was down to 27K
warm return valves were wide open
opened supply valves CV143 and CV146.
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Thu Jul 20 11:01:09 2006, Willy Andersson, Quench Recovery, Opened up warm return valves CV151 and CV153
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Mu2 pressure was just about at trip point due to trapped volume of helium
warming. So opened up warm returns to bleed off pressure and prevent it
from rising. |
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Thu Jul 20 08:18:31 2006, Doug Preddy, Quench Recovery, T1 started
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Started flow to turbines. Both started. T1 seems a bit slow. HIC110 at 0.85
SI110 = 4100.
Cool down started. |
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Thu Jul 20 02:59:06 2006, Doug Preddy, Quench Recovery, T1 still not starting
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| I will leave the cold box to warm overnight and try it again in the morning. |
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Thu Jul 20 00:52:13 2006, Doug Preddy, Quench Recovery, T1 frozen
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| T1 will not spin up. Warming up cold box. |
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Thu Jul 20 00:25:16 2006, Doug Preddy, Quench Recovery, Solenoid quenched @ 11:15
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Solenoid Quenched on C1 temp. It went above 5K. Shut off compressor.
Restarting system @ 12:15 |
Thu Jul 6 15:04:17 2006, Doug Preddy, Normal Running, test 
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| test |
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Thu Jul 6 15:00:15 2006, Doug Preddy, Normal Running, test
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Mon Jul 3 23:01:34 2006, Doug Preddy, Quench Recovery, power lead warming/ripples caused quench
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power lead warming/ripples caused quench at 18:45 today. Compressor stayed
on, but flow to solenoid stopped.
I started flow to solenoid at 22:40. |
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Fri Jun 30 11:17:57 2006, Doug Preddy, Normal Running, Solenoid recovered
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Tuesday night. June 27, 2006, the solenoid quenched for no apparent
reason. It was restarted Wednesday morning. The vacuum in the solenoid
went away (up to 8 Torr). This was found to be a result of a leaking
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Fri Jun 30 11:13:00 2006, Doug Preddy, Normal Running, E-log is back up and running
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| I would have made an entry when it died, but----- |
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Fri Jun 16 08:12:04 2006, Doug Preddy, Normal Running, LI108 indicates high on EPICS screen
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| LI108 indicates high on EPICS screen (150%) Controller shows ~64% |
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Wed Jun 14 16:27:01 2006, Willy Andersson, Quench Recovery, Energized solenoid
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| Powerleads appear stable. |
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Wed Jun 14 10:35:30 2006, Willy Andersson, Quench Recovery, Switched to series cooling.
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Had system in //return cooling overnight with small flow to keep power
leads cool. Switched to series mode about 30 minutes ago. Building LHe
level. |
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Tue Jun 13 16:04:33 2006, Willy Andersson, Quench Recovery, TIC 121 set to auto mode
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