Reports until 11:48, Tuesday 13 March 2018
H1 SUS
betsy.weaver@LIGO.ORG - posted 11:48, Tuesday 13 March 2018 (40988)
ETMY bias alignment sliders reset last Thur to old values after boot

The bias slider values that were stored in the SDF SAFE file were old.  When there was a boot fest last Thur of ETMY SUS (alog 40913), these values got restored and the ETMY no longer pointed to ~0 on the Oplev.  Today I trended those values an dataviewer in order to restore them.  The latest values which we mechanically pointed the ETMY to, used a little bit of bias:

PIT  34.4

YAW -105.0

 

However these values don't put it on the Oplev in PIT now.  Today it wants bias slider values below in order to be well centered on the OL:

PIT  -135.6

YAW  -105.0

 

Whatever.  So many mysteries, so little time.  Door closed.

I have loaded these newest bias values into the ETMY SUS SDF SAFE file.