corey.gray@LIGO.ORG - posted 01:36, Monday 20 February 2017 - last comment - 08:15, Monday 20 February 2017(34250)
EX Vacuum Gauge Still Off (i.e. PT524)
Starting my shift, one check we do is the Alarm Handlers. The Vacuum one has an alarm for the EX PT524 vacuum gauge. Chandra noted this went down on Tues (Fire Dept Glitch?) & looks like it's remained down ever since. Since other gauges look good with pressures of 1e-9Torr at EX, I'll assume we do not need to pay any mind to this alarm for the moment.
These cold cathode gauges sometimes take a while to turn back on at low pressures.