Day's Activities

• 8:30-8:40:  Peter/Jeff moving chiller back from Large Equip to Receiving
• 8:34:  Hugh removing STS2 from beer garden
• 8:45-8:55:  Jeff inventory work in Cleaning Area
• 10:06:  Pepsi on site
• 10:10:  Nutsinee checking to see if irises were left closed at Hartman Sensor Table (at HAM4)
• 10:15- afternoon:  MX cleaning Christina/Karen
• 10:46:  MY trip for Jodi
• 11:00:  Ops Training
• 12:15:  Possible nds0 reboot by Dave/Dan M
• 1:45:  Filiberto roll up door
• 2:13:  Filiberto at MX
• 2:57:  DAQ restart (Dave)
• Robert had a few trips out to EY throughout the day

H1 Operator Locking Notes For Today

Came in to find the Arms not locking on GREEN in the morning.  Alignment was OK, but when I tweaked up alignment and engaged WFS & this would drop the arm powers.  With Daniel & Ellie's help (& Evan's alog), saw that there were issues with the Pit/Yaw M0 Lock Filters for the ITMs.  So Inputs were disabled, Cleared Histories & turned off FM2 (+20dB) & FM3 ("empty") filters for ITMx & ITMy.  After this we were able to take the arms to "Locked_No_Slow", and then walked through the rest of Initial Alignment.

When we went to locking the full ifo, the first steps is "Check IR" via ISC Lock Guardian Node.  We had nice ALS arm powers, but when we got to the "Find IR" state, the arms would break lock and the MC would break lock (not sure of the order though).  I believe Sheila caught the issue here (she noticed Tidal issues and then some filters being turned OFF on the ETMs).