jeffrey.kissel@LIGO.ORG - posted 17:18, Wednesday 06 June 2018 (42367)
Progress on Suspension Health Checks Post-Pump-Down
J. Kissel I'm slowly working through measuring the standard health-check transfer functions and ASDs for all suspensions now that most chambers are closed and pumped down. I'm seeing a few suspicious things along the way that I'll need to go back and run more tests (see "notes" below), but for now I'm moving on when I see weird things, trying to get all that are "OK to GO" measured and confirmed good. I list the progress below. Where there are suspensions that are "OK to GO" I list the date of the measurement. Suspension Measured Data Processed Notes RM1 Not Yet n/a RM2 Not Yet n/a MC1 Not Yet n/a MC3 | | IM1 | | IM2 | | IM3 | | IM4 | | PRM | | PR3 V V MC2 Not Yet n/a PR2 Not Yet n/a BS Not Yet n/a ITMX M0 done, R0 Not Yet Not Yet ITMY M0 done, R0 Not Yet Not Yet ETMX Not Yet n/a TMSX Not Yet n/a ETMY Yes Not Yet All good. 2018-06-05_2125, 2018-06-05_2244 TMSY Somewhat Suspiciously nasty Roll to Roll TFs. Need to investigate further. SR2 M1 done Not Yet Icky looking results with currently desired alignment offsets. Took "no offsets" data -- looks good. Need to investigate further SR3 M1 done Not Yet All good. 2018-06-06_2256 SRM M1 done Not Yet Icky looking results with currently desired alignment offsets. Took "no offsets" data -- looks good. Need to investigate further OFI M1 done Not Yet All good. 2018-06-06_2308 ZM2 M1 done Not Yet All good. 2018-06-06_2323 OM1 Not Yet n/a OM2 | n/a OM3 | n/a OMC | n/a ZM1 | n/a OPO V n/a