TITLE: 06/04 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 135Mpc
SHIFT SUMMARY:

- Arrived to H1 relocking

- Passing the IFO to Ryan S. locked and in observing, H1 appears to be stable and seismic motion is very low

- Lock #1:

• ACQUIRED NLN @ 15:39, but cannot go into OBSERVING due to HAM 7 ISI interface chassis failure - Dave's respective alog (and subsequent work repairs), here
• 18:47, chassis has been swapped by Jim/Marc and Vicky is recovering SQZ
• Back to OBSERVING @ 18:51
• EX saturation @ 19:17
• Intention bit flipped to COMMISSIONING @ 20:28 briefly, but whatever caused the flip was gone before I opened any medms (I think I may have seen the H1EDC on the CDS overview go red briefly?)
• LOCKLOSS @ 20:54 - DCPD saturation, possibly ASC ringup?, seeing drifts in SRCL/PRCL loops as well
  • Also seeing a decent amount of movement for the EX OSEM (particularly LR) on the locklost page
  • IMC_REFL_SERVO_SPLITMON on the board saturation plots on the locklost page is also showing a good amount of movement

- Lock #2:

• IFO acquired NLN @ 21:54 unaided, OBSERVING @ 22:04

LOG:

No log for this shift.