Reports until 08:43, Tuesday 01 October 2024
H1 CDS
david.barker@LIGO.ORG - posted 08:43, Tuesday 01 October 2024 - last comment - 09:22, Tuesday 01 October 2024(80389)
VACSTAT detected BSC3 glitch at 02:13:44 PDT Tue 01 Oct 2024

VACSTAT issued alarms for a BSC vacuum glitch at 02:13 this morning. Attachment shows main VACSTAT MEDM, the latch plots for BSC3, and a 24 hour trend of BSC2 and BSC3.

The glitch is a square wave, 3 second wide. Vacuum goes up from 5.3e-08 to 7.5e-08 Torr for these 3 seconds. Neighbouring BSC2 shows no glitch in the trend.

Looks like a PT132_MOD2 sensor glitch.

Images attached to this report
Comments related to this report
david.barker@LIGO.ORG - 09:06, Tuesday 01 October 2024 (80391)

vacstat_ioc.service was restarted on cdsioc0 at 09:04 to clear the latched event.

david.barker@LIGO.ORG - 09:22, Tuesday 01 October 2024 (80393)

This is the second false-positive VACSTAT PT132 glitch detected.

02:13 Tue 01 Oct 2024
02:21 Sun 01 Sep 2024

alog for 01sep glitch