kyle.ryan@LIGO.ORG - posted 18:12, Monday 26 February 2018 (40735)
Helium leak tested 4.5" CFF on BSC1
Gerardo, Kyle After calibrating using an external helium source and with a 6.8 x 10-9 mbar*L/sec signal baseline, Gerardo sprayed an audible flow of helium for 100 seconds per flange around the two 4.5" CFF feed-throughs that had been removed and re-installed as part of the ITMy diagnostics last week -> no signal detected.