Reports until 17:09, Friday 28 March 2025
H1 CDS
david.barker@LIGO.ORG - posted 17:09, Friday 28 March 2025 (83625)
VACSTAT detected LVEA vacuum glitch

Gerardo, Dave:

At 16:51:34 Fri 28mar2025 PDT we had another small vacuum glitch in the LVEA, which this time was reported by VACSTAT, detected by those gauges with increased sensitivity (BSC2, CP2, YARM and XARM). Attached trends show this was a modest ~0.1e-09 Torr increase. Rising edge about 10 seconds, pumpdown time about 3 mins.

H1 was locked throughout. I reset vacstat_ioc.service to clear the alarm.

Images attached to this report