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ID Date Author Operational Mode Subject Text   197   Wed May 30 08:38:38 2007 Doug Preddy Quench Recovery Solenoid quenched this morning Solenoid quenched this morning on power lead temp (I believe). I restarted it at ~7:00, but the capacity      198   Wed May 30 11:27:32 2007 Doug Preddy Quench Recovery Problems recovering Various start up problems : MV51 stuck open. Finally got it closed by hitting the valve with a hammer.      199   Thu May 31 07:11:05 2007 Doug Preddy Quench Recovery switched to parallel cold return switched to parallel cold return earlier this morning. Vacuum is 5 x 10-5.      200   Thu May 31 11:51:49 2007 Doug Preddy Quench Recovery Switched to series mode        201   Tue Jun 12 12:48:25 2007 Doug Preddy Maintenance added one bottle UHP helium to system        202   Thu Jun 14 00:10:10 2007 Doug Preddy Quench Recovery recovering from earlier quench Solenoid quenched on power lead temperature last night at about 6:00. I  restarted flow to the solenoid in parallel      203   Sat Jun 16 15:05:03 2007 Doug Preddy Normal Running Solenoid power lead temp problem Power lead temps rippling and increasing. I asked an operator to cycle  HIC142. This seems to have fixed the problem      204   Tue Jun 19 21:15:41 2007 Doug Preddy Quench Recovery Today's quench power lead temps caused a quench at 8:30 this morning. Recovery of system  and flow to solenoid was started by 11:00.      205   Sun Jul 1 16:09:37 2007 Doug Preddy Normal Running M9B:DP2 tripped off Diffusion pump tripped off and vacuum (and power lead temps) going up. I  had an experimentor cycle HIC 142 at 4:15      206   Wed Jul 4 11:13:12 2007 Doug Preddy Quench Recovery test This is a test to make sure the e-mail works.      207   Thu Jul 5 03:04:50 2007 Doug Preddy Normal Running Power lead problems The power leads temps are starting to cycle again. Earlier today M9  experimentor cycled HIC142 to stablize the      209   Sat Jul 28 15:45:17 2007 Doug Preddy Quench Recovery quench recovery The solenoid tripped off this morning due to pwer lead over temp. The  compressor was also off. I restarted this      210   Sat Jul 28 22:30:13 2007 Doug Preddy Quench Recovery quench again recovered system and energized solenoid at about 6:00 this evening. At 9:30 power lead temps quenched solenoid      211   Sun Jul 29 04:58:27 2007 Doug Preddy Quench Recovery Energizing solenoid LHe level~50%. Still have a slight ripple in the power leads, but they are  cold enough to power the solenoid. LHe_in      213   Mon Aug 6 08:41:31 2007 Doug Preddy Quench Recovery Cold box trip at 6:00 compressor off due to cold box trip at 6:00 this morning. Restarted system  and started flow to solenoid in parallel      214   Tue Aug 14 10:15:22 2007 Doug Preddy Maintenance Solenoid ramped down Solenoid ramped down and locked out for M9A slits work.      215   Tue Aug 14 12:55:12 2007 Doug Preddy Normal Running Strip tool saves There are two strip tools saved: coils powerlead      216   Wed Sep 12 12:01:02 2007 Doug Preddy Maintenance regenerated adsorber regenerated adsorber replaced MV902 "ON" switch (used nitrogen precooling on switch)      217   Fri Sep 14 12:44:52 2007 Doug Preddy Start Up started compressor running purifier over weekend      219   Wed Sep 19 20:53:18 2007 Doug Preddy Maintenance More diff pump news Cold box pumped out to ~ 190 mTorr overnight.Leak checked the pump again.  Still leaks at dip stick.Tried resetting

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