Kyle, Gerardo 

Helium baseline value 3 x 10-10 torr*L/sec at start of testing and 6 x 10-10 torr*L/sec at completion of testing (~3hours).  Large known leaking feed-through shielded via 4 layers of ultra tape.  Helium flow > 1 bubble per second when submerged.  

YBM to be vented on Monday and leaking feed-through flange will be replaced then.