Reports until 08:46, Wednesday 21 May 2014
H1 SUS
arnaud.pele@LIGO.ORG - posted 08:46, Wednesday 21 May 2014 - last comment - 15:43, Wednesday 21 May 2014(12007)
SRM 3a lower stages transfer functions completed

Measurements on lower stages (M2-M2 and M3-M3) of SRM succesfully completed yesterday night. The transfer functions are showing a good match with the model (plots pending).

Comments related to this report
arnaud.pele@LIGO.ORG - 15:43, Wednesday 21 May 2014 (12012)
Link

Attached are the in chamber (HAM5 locked), in air, transfer functions and spectra plots for the three stages of SRM. 

Betsy's adjustments to center the osem on M2 UR flag has alleviated any osem readout/actuation issues (cf M2 spectra and TF)

Attachments are in the following order : 

  • M1-M1 undamped transfer functions for the 6 dofs compared with the model 
  • M1 spectra of osems comparing damped / undamped
  • M2-M2 undamped transfer functions compared with the model
  • M2 spectra of osems comparing damped / undamped
  • M3-M3 undamped transfer functions compared with the model
  • M3 spectra of osems comparing damped / undamped
Non-image files attached to this comment