TITLE: 07/06 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 151Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

H1 was locked at beginning of the shift, but had a lockloss just after 10am local.  Relocking sadly took 3hrs, but it isn't clear why it took so long, because other than trying multiple times and eventually running an alignment and continued with more locking attempts, H1 finally made it past DRMI (and then locking was mostly automatic from there), but.... within an hour one of the 1kHz violins rung up (itmx13).  I made some fairly large gain drops/increases which probably didn't help---currently Rahul is closely damping with much smaller gains.  The DARM spectrum on nuc30 is glitchy/ugly---assuming it's due to noisier violins.

Sadly, no Calibration run today.

Guardian Notes:

• DIAG MAIN Messages:  (1) PSL RefCav transmission low, (2) Stand Down Alert query failure, (3) ISS diffracted power is low.
• IMC_LOCK has a message for WFS not centered

LOG:

• 1707 Lockloss & Locking notes:
  • Lots of locklosses for LOCKING ALS due to glitches
  • 1744-1802 Alignment
• 1836 heard a bang/ping in control room...sounded like it could be above roof panels.  (calm winds, 93degF)
• 1954-2043 New Zealand Rosmini College tour arrives in control room (fred)
• 2011 Back to OBSERVING!
  • Aim for Calibration after 4pm-ish (for me, or have TJ run it!)
• 2050 ITMx mode 13 gain change (only noticed this after the tour left and happened to see slight ramping up of violins on nuc31)
  • texted Rahul for assistance
• 2101-2141 Out of Observing for ITMx violin setting changes to damp this mode down.