[Hallb-engineering] sniffer back on line

Steve Christo christo at jlab.org
Thu Jan 28 04:48:27 EST 2010

The detector Dewar has been drained and dried and seems to be working 
fine. The large Dewar has enough LN2 to last till the normal Friday 
fill. I'm guessing that the recent heavy rains that caused the cable way 
and hallway to be inundated, raised the humidity level enough to cause 
the icing of the detector Dewar. It would probably be a good idea to 
warm and drain the detector Dewar once every 2 or 3 months as part of 
the routine maintenance.

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