Activity Log: All Times in UTC (PT)

16:00 (08:00) Take over from Jim
16:59 (08:59) Christina & Karen – Going into the mechanical building to deliver supplies
17:25 (09:25) High temp alarm on CS Zone 1B. Will monitor.
17:55 (09:55) Out of Observing to try to improve power recycling gain
18:52 (10:52) Back into Observing mode
19:32 (11:32) Platt Electrical on site with a delivery for Richard
20:50 (12:50) LockLoss – POP_A_LF has been drifting down all morning despite the tweaking of PR2
21:00 (13:00) Start initial alignment and then on to relocking
22:00 (14:00) Travis – Going into the optics lab
22:02 (14:02) GRB Alert – LHO relocking so ignored alert
22:08 (14:08) IFO locked and back into Observing
22:22 (14:22) Travis – Out of the optics lab
22:44 (14:45) Travis – Going into optics lab
22:58 (14:58) Travis – Out of the optics lab
23:10 (15:10) Travis – Going into optics lab
23:15 (15:15) Travis – Out of the optics lab
00:00 (16:00) Turn over to Cheryl
 

End of Shift Summary:

Title:  01/04/2015, Day Shift 16:00 – 00:00 (08:00 – 16:00) All times in UTC (PT)

Support:  Sheila, Jenne, Kiwamu,   
 
Incoming Operator: Cheryl

Shift Detail Summary: Problems with the POP_A_LF plagued the lock all morning. Went out of Observing for about an hour while Sheila and Jenne tweaked PR2. They were able to improve things a bit but it did not last for long. Finally, the recycling power dropped enough to break lock. Did an initial alignment and relocked the IFO. There were no problems with either alignment or relocking. 
   The initial alignment did make some improvements the too POP_A_LF signal. However, the POP_A_LF signal is still a bit ragged; and has been drifting downward since the lock was reestablished. It is now just below the IMC-MC2_TRANS signal.  
   The IFO is locked in Observing mode. Power is good, range is around 79Mpc. In general, environmental conditions continue to be good.