aLIGO LHO Logbook

H1 General

cheryl.vorvick@LIGO.ORG - posted 12:10, Friday 29 January 2016 - last comment - 13:19, Friday 29 January 2016(25242)

Day Shift Mid-Day Update: 20:00UTC (12:00PT)

State of H1: locking but not making it to DRMI_Locked

Summary:

morning work in the LVEA pulling cables to racks near HAM6 - finished at 11AM
H1 has been aligned from an initian alignment
DRMI is locking but cannot reach DRMI_Locked
ISI filter changes reverted in BS and ITM chambers
dark offsets set for ASAIR and POPAIR, which was necessary after the rack work at HAM6
Environmental: useism is 0.7um/s and winds are below 10mph

Comments related to this report

cheryl.vorvick@LIGO.ORG - 13:19, Friday 29 January 2016 (25244)

Update as of 21:12UTC (13:12PT)

H1 locked and went to Low Noise at 10W
the low power Low Noise lock is a test that needs about 30 minutes of lock time to analyze the data
the lock was unstable and broke lock
currently looking at changes
reverted those changes that were tests
reverted some changes logged mid-day today, and re-reverted back with Hugh's help
H1 is locking well, so expect to be relocked shortly, and look for cause of stability issues