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Reports until 16:10, Monday 26 October 2015
H1 General
cheryl.vorvick@LIGO.ORG - posted 16:10, Monday 26 October 2015 (22854)
Ops Day Summary:

TITLE: Ops Day Summary: 15:00-23:00UTC, 8:00-16:00PT, all times in UTC

 

STATE of H1:  major interference in locking the from earthquake after effects, useism, and wind - locking is getting progressively better

 

Support:  Jenne, Evan, and Sheila

 

Quick Summary:  IFO is locking well up to DRMI, and gotten past DRMI, but not to ENGAGE_ASC, can now get to DARM_WFS

 

Details: 

- Ground motion significantly effecting arms, with arm powers in green and red dipping down to as low as 0.5-0.7

- Stopping at DARM_WFS to damp ROLL mode early - this is the stage where the signal becomes useful

- Switched to Quiet_90 ISI blend filters - alogged earlier

- Needed higher gain to lock X arm in IR, while doing an initial alignment

- Day spent considering and sometimes trying new approaches to improve locking with high ground motion

 

Shift Activities: work around the site

- Joe and Chris on X arm sealing the beam tube, morning and afternoon

- Richard to Electronics Room, 20:45-21:15UTC

- Kyle on Y arm at the y28, doors closest to End Station

 

Control Room Display:

- restarted cameras on video4 (camera's froze)

- restarted nuc4's dtt, DRMI_FOM_displacements

- Carlos working on nuc5 (couldn't get to lower screen when logged in)

 

Currently:

- locking is getting progressively better

- earthquake (~14 hours ago) effects are gone 

- useism is slowly coming down

- wind is dying down

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