Reports until 20:21, Friday 03 January 2020
LHO VE (VE)
gerardo.moreno@LIGO.ORG - posted 20:21, Friday 03 January 2020 - last comment - 16:19, Monday 06 January 2020(54280)
HAM6's RGA Ion Pump System Crashed

(Kyle R, Richard M, Gerardo M)

The HAM6 RGA ion pump system crashed, this caused the the HAM6 high voltage interlock to trip and take the IFO down.  The controller for the ion pump was found with a message on the main screen, message was "short", and the "short' remained after several attempts to start the controller.  We could not locate a direct replacement for such controller, and we have 2 different types, a negative and a positive (we need a positive type), due to time constraints the decision was to swap the cable for the high voltage interlock back to the nominal state, back to HAM6 Inficon gauge.  Attached is a plot of PT110 gauge pressure for the past 30 days.

FRS ticket 14014.

Non-image files attached to this report
30days.pdf
Comments related to this report
gerardo.moreno@LIGO.ORG - 16:19, Monday 06 January 2020 (54318)VE
Link

With the IFO out of lock (lost lock at 22:04 utc 1/6/2020), I replaced the RGA ion pump controller, turned it ON, and the controller did not have issues staying on, and with no complains.

Closed FRS ticket 14014.