TITLE: 04/28 Day Shift 15:00 – 23:00 (08:00 -16:00), all times posted in UTC

STATE of H1: Aligning

INCOMING OPERATOR: Patrick

SHIFT SUMMARY: Started out unable to get through ACQUIRE_PRX in initial alignment. With Keita’s help, I was able to adjust PRM to get H1:ASC-POP_A_NSUM_OUTPUT high enough to get to WFS_CENTERING_PRX. Then after more searching we reverted changes to the SUS HTTS SDF, which allowed us to get through initial alignment. Then misaligning SR2 at the beginning of the lock sequence was causing SUS_SRM to trip because the damping filters were all turned off. We turned those on, and then I was not able to get past FIND_IR because the COMM_OFFSET frequency had changed from -200 to -37,500 and the offset search was too far away to find it. I then lost lock from OFFLOAD_DRMI_ASC several times due to (I’m guessing) SRM being badly misaligned. Leaving it with Patrick, who is starting an initial alignment.

LOG:

15:00 (08:00) Start of shift

19:56 (12:56) Robert to LVEA -- take picture of chamber

20:00 (13:00) Robert back from LVEA

23:00 (16:00) End of shift