TITLE: 07/13 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 54Mpc
INCOMING OPERATOR: Travis
SHIFT SUMMARY:

I spent the beginning of the shift trying to help Jeff and Hugh damp violin modes. I worked on adjusting the gains for the first fundamental modes 2, 4, 6 and 8 of ETMY. Increasing the gain on modes 4 and 6 did not seem to have any effect on the ~508.219 Hz mode. Increasing the gain on modes 2 and 8 may have helped damp the ~507.992 Hz and ~508.66 Hz modes respectively, or they could have just been coming down regardless, it was unclear. Thomas, Pep and Jenne worked on moving the beam spot positions but reverted their changes before they left. We had another lock loss attributed to the BS ISI CP glitching. Hugh made another change to try and address it (see his alog). We can now make it to NLN without intervening in the violin mode damping and without skipping any states. After consulting with Vern we set the intent bit to observing despite the range of ~54 MPc.

LOG:

23:55 UTC GRB verbal alarm. LLO not on teamspeak. Ignoring.
00:42 UTC Lock loss. BS ISI CP glitch. Thomas and Pep reverting beam spot moving ASC changes.
00:44 UTC Hugh to CER to powercycle BS interface chassis.
00:48 UTC Untripped BS ISI. Hugh back to CER to tighten screws.
01:00 UTC Thomas and Pep done. Relocking.
01:36 UTC NLN.
02:01 UTC Observing after consulting with Vern.