Displaying report 1-1 of 1.
Reports until 16:48, Friday 02 September 2016
LHO General
patrick.thomas@LIGO.ORG - posted 16:48, Friday 02 September 2016 (29476)
Ops Day Summary
After one of the locklosses in the morning the IMC would not relock. Clearing some of the IMC WFS DOF histories brought it back.
I often had to adjust the BS in pitch to lock on DRMI.
At some point the X arm alignment ended up such that engaging the WFS would drive the green alignment off. Jenne and I trended the optical levers back for ITMX and ETMX and tried bringing these optics back to those values. This did not seem to help so Jenne suggested that I go through an initial alignment. I did and was able to lock both arms on green without difficulty after that.
After the initial alignment we kept losing lock engaging the DRMI ASC loops. Jenne and I stopped at LOCK_DRMI_1F and minimized the ASC loop error signals by hand. Eventually this allowed us to move on.

16:26 UTC Betsy to LVEA west bay
16:31 UTC Kyle to LVEA to take RGA scans
16:51 UTC Betsy done
17:48 UTC Kyle back, not able to take RGA scans
18:51 UTC Chris sending excitation to ITMX
18:53 UTC Kyle back
20:14 UTC Chris sending excitation to ITMX
21:40 UTC Kyle retrieved computer from LVEA
21:49 UTC Starting initial alignment
22:14 UTC Done initial alignment
22:42 UTC Kyle to mid Y to fill CP3
Displaying report 1-1 of 1.