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ID Date Author Operational Mode Subject Text   226   Fri Oct 5 13:25:41 2007 Doug Preddy Quench Recovery funny graph There was a fluctuation of the positive lead temp with no flow going to  the power leads.      225   Fri Oct 5 10:25:43 2007 Doug Preddy Quench Recovery Unknown quench 2 Kevin and I were at the Sulzer panel when the system quenched 2. No  obvious reasons. Restarted the system.      224   Tue Oct 2 13:02:37 2007 Doug Preddy Normal Running PLC problems While downloading new code for 2A PLC the M9 and M15 vacuum systems were  shut off. This is due to the two systems      223   Thu Sep 27 07:41:15 2007 Doug Preddy Start Up Solenoid cold Solenoid cold and in series mode. 50% liquid level. Starting flow to  powerleads.      222   Wed Sep 26 08:52:46 2007 Doug Preddy Start Up switched to parallel cold return        221   Tue Sep 25 07:34:04 2007 Doug Preddy Start Up PIC229 to 11 bar adjusted turbine speeds and HIC104 to maintain their values.      220   Mon Sep 24 15:08:41 2007 Doug Preddy Start Up Started cool down this morning The vacuum in the cold box was good on Friday 0.0 X 10-4. Let it pump over  the weekend. Added two bottles of UHP helium      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      218   Tue Sep 18 18:48:11 2007 Curtis Ballard Maintenance cold box leak check The leak check of the cold box diff pump fittings.  Found a leak at the  base of the diff pump on the tee that is      217   Fri Sep 14 12:44:52 2007 Doug Preddy Start Up started compressor running purifier over weekend      216   Wed Sep 12 12:01:02 2007 Doug Preddy Maintenance regenerated adsorber regenerated adsorber replaced MV902 "ON" switch (used nitrogen precooling on switch)      215   Tue Aug 14 12:55:12 2007 Doug Preddy Normal Running Strip tool saves There are two strip tools saved: coils powerlead      214   Tue Aug 14 10:15:22 2007 Doug Preddy Maintenance Solenoid ramped down Solenoid ramped down and locked out for M9A slits work.      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      212   Tue Jul 31 07:53:57 2007 Kevin Trithardt Normal Running cycled power leads got a page for the power lead temp came down and cycled the power leads.. did not seem to make a difference..      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      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      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      208   Thu Jul 5 11:01:47 2007 Kevin Trithardt Other Current lead warm up Due to curent lead temperature occilation Doug recommended warming up the  current leads.      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

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