Reports until 07:39, Monday 01 June 2026
LHO General
ryan.short@LIGO.ORG - posted 07:39, Monday 01 June 2026 - last comment - 08:24, Monday 01 June 2026(90407)
Ops Day Shift Start

TITLE: 06/01 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 7mph Gusts, 5mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.16 μm/s 
QUICK SUMMARY: Will continue recovery of various sytems following power outages over the weekend and will work on discovering what still needs attention.

Comments related to this report
ryan.short@LIGO.ORG - 08:24, Monday 01 June 2026 (90408)
Link

Current status:

  • Cannot remote login to PSL computer to restart the laser
    • I expect I won't be able to power it on anyway as the benchtop power supply in the PSL racks powering CB2 probably needs to be turned back on manually
    • Site laser interlock is tripped too; can't reset since PSL Beckoff is down
  • HEPI_ETM{X,Y} and CDS_CA_COPY Guardian nodes were in error, reloading fixed
    • Guardian machine does not seem to have gone down as nodes all look okay
  • All suspesnions recovered (except BS and ITMs, did not touch these)
  • All HEPI pump stations are down, cannot untrip HEPI
    • Not untripping ISIs while HEPIs are down
  • ISI HAM8 recovered, ISI HAM7 recovered but then quickly tripped again (chamber is vented, makes some sense)
  • Cannot seem to trend any data via ndscope before the outage on Saturday
  • End BRSs are down (if Beckhoff is still down, this makes sense)