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
isolation valve between the solenoid and T2. T2 was vented, which caused
the solenoid to slowly vet. When T2 was pumped out again, the solenoid
vacuum recovered. This caused a delay in recovering the solenoid. As of
Friday morning 7:15 the solenoid power supply was ramped up. |