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User name folts
Log entry time 16:40:28 on November 10, 2009
Entry number 298769
We found a bad vacuum on right Q2 cold return. This U tube was looked at
between experiments and was good so we want to take a closer look at it
when we have time. We left the pump on it.
Installed, purged and have opened (cracked) a bayonet cooldown bypass on
the right Q2 in an attempt to lessen the heat bumps that occur when a
fill valve opens after a long closure.
Cryo noted a correlation between our magnet trips and the operation of
the target JT valve. They are looking at limiting the control loops on
the target controls.