Reports until 13:23, Thursday 13 June 2013
H1 SEI
vincent.lhuillier@LIGO.ORG - posted 13:23, Thursday 13 June 2013 (6740)
H1 HPI BS - Controlled in position (100mHz)

During testing, we saw that actuator V4 of HPI BS was not able to deliver full power. We didn't try to fix the problem (risk of disturbing alignment). The HEPI at the beam splitter is now controlled in position at 100mHz. We will come back to the problematic actuator later.
Some correction gains were applied to the HEPI actuators to compensate for differences in the actuator drives. The correction gains are:
 

DOF Act Gain
H1 1.016
H2 1.064
H3 0.957
H4 0.970
V1 0.888
V2 0.932
V3 0.978
V4 1.284

 

The offsets used on the IPSs are:

DOF Offsets
X -128873
Y -381126
RZ -79880
HP 19919
Z 536676
RX -16017
RY -32412
HP 84305