Ops Shift Log: 05/17/2019, Evening Shift 23:00 – 07:00 (16:00 - 00:00) Time - UTC (PT)

State of H1: Locked at NLN

Intent Bit: Observing

Support: Sheila

Incoming Operator: Niko

Shift Summary: Relocked the IFO after earthquake in the Solomon Islands rang down and the commissioners made a few tweaks. Sitting at NLN while Keita & Georgia are doing some commissioning.   

 

While looking for the cause of low range (high 90s low 100sMpc) found an error condition with the SQZ SHG reporting Conversion Efficiency Low. Per Keita’s instructions, called Sheila. She checked a few things and then had me drop out of Observing while I went to the Squeezer table. Under her direction adjusted the Squeezer laser current and temperature. Went back into Observing while letting things stabilize. Spoke with Sheila again, given the range was not too bad (wind and microseism have dropped) and that LLO and Virgo were up as well, decided not to make further adjustments at this time. While the problem is not fixed, but appears to be causing no additional trouble, at this time.    

 

Spent the remainder of the shift in Observing mode. Currently the range is 108.5Mpc. The wind has dropped to a Fresh Breeze and the microseism is down as well.  

 

 

Activity Log: Time - UTC (PT)

23:00 (16:00) Take over from Corey/Patrick

23:34 (16:34) Set SEI_CONF to EARTHQUAKE for mag 6.0 in the Solomon Islands

23:45 (16:45) Dance troupe on Overpass. – Approved by ML

00:01 (17:01) Vanessa – Showing her family around the site

00:25 (17:25) Set SEI_CONF back to WINDY after the EQ rang down

01:03 (18:03) Locked at NLN

02:32 (19:32) Set Intention to Observing

03:49 (20:49) Out of Observing to work on Squeezer problem

04:35 (21:35) Back to Observing while waiting for Squeezer changes to stabilize

07:00 (00:00) Turn over to Niko