kyle.ryan@LIGO.ORG - posted 17:39, Friday 21 October 2011 (1604)
Leak testing of recently installed aLIGO flanges on BSC8 complete
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.