TITLE: "10/16 [OWL Shift]: 07:00-15:00UTC (00:00-08:00 PDT), all times posted in UTC"

STATE Of H1: Observing at ~80 Mpc for the past 2 hours.

SUPPORT: Kiwamu, Sheila

SHIFT SUMMARY: Difficulty locking more than half of the shift. First I ran into Guardian issue not turning on the gains for INP1 and PRC1. Corey probably ran the a2l script and turned on the right gains by accident when he reverted the SDF differences (after a2l script failed) so we weren't aware of this happening. After couple of times turning the gains on by hand and eventually reloaded Guardian code as Kiwamu suggested, I ran into another problem and kept losing lock at ENGAGE_ASC_PART3. During phone calls with Sheila and Kiwamu we though it was an issue with the ASC. Kiwamu came over and after noticing a huge drop in RF90 prior to a lockloss he suggested I run an initial alignment. Turned out there were 2urad offset in TMSY. I didn't have any trouble locking arms green and DRMI so I didn't suspect a bad alignment (although I kept having trouble finding IR. Maybe that could have been a red flag?).

After the initial alignment we lost lock at Switch to QPDS once but everything went smoothly afterward. We got to NOMINAL_LOW_NOISE, ran the a2l script (had no trouble running it on my account), and finally Observing for the first time in almost 7 hours at 12:56 UTC.

Tonight I learned how 2 urad can make life miserable. My world will never be the same again.....

INCOMING OPERATOR: Jim

ACTIVITY LOG:

See Shift Summary.