hugh.radkins@LIGO.ORG - posted 18:16, Friday 07 February 2014 - last comment - 18:21, Friday 07 February 2014(9926)
State of ISIs for ITMs ETMX & BS
Left these ISIs in following State
HEPI position loops on
Stage2 ISI in Lvl3 control with 750mHz blends for BS & ITMY and 250mHz for all dofs sans 100mHz for X & Y on the ITMX.
Stage1 ISI in Lvl3 control with T250 blends everywhere except: T100mHz.44NO on BS & T40mHz.44NO on ITMY or the X & Y dofs. Stage1 of the ITMX blends w/ TCrappy everywhere.
For the ETMX, the blends are all TCrappy, Stage1 is in Lvl3 control while Stage2 is in Lvl2 control. We are still getting some peaks slowly ringing up things out past the UUG which require notches for the Control3
Just found the BS Stage2 tripped back to damping only. Sounds like the Michelson Feedback forces our Actuators to their limit.