Reports until 01:00, Wednesday 13 March 2019
H1 ISC
daniel.brown@LIGO.ORG - posted 01:00, Wednesday 13 March 2019 - last comment - 10:08, Wednesday 13 March 2019(47491)
ESD bias test

Georgia, Dan, Sheila

We changed the ESD bias voltages on ITMX, ITMY, and ETMY to see how it affected DARM - it didn't.

 

Images attached to this report
Comments related to this report
rich.abbott@LIGO.ORG - 08:34, Wednesday 13 March 2019 (47495)
Link 

Dan, forgive my ignorance, but were you expecting a change?  I would have guessed that there would be a change seen in DARM.  What is the message to take away from this observation?
daniel.brown@LIGO.ORG - 10:08, Wednesday 13 March 2019 (47498)
Link

Hi Rich, we were not expecting to see a change, but LLO saw some effects when they were changing theirs in alog 43081 and we wanted to see if perhaps we did too.