sheila.dwyer@LIGO.ORG - posted 02:02, Friday 11 November 2016 (31412)
moving IMs to imitate IMC offsets
The other night I ran Stefan's spot move script, which tracks the alignment of all optics based on the combination of ASC control signals and sliders. Tnight I tried to imitate that move of the interferometer alignemt by moving IMs, by moving IM1 I was able to see a small improvement in recycling gain, (from about 30.7 to 30.8) but no improvement in the 260Hz jitter peak. I started trying to move IM2, but moved too quickly and broke the lock.
When I moved the IMC DOF1P offset to 120 counts this is how the other optics moved:
PIT: SUS-IM1_M1_ 0.0
PIT: SUS-IM2_M1_ 0.0
PIT: SUS-IM3_M1_ 0.0
PIT: SUS-IM4_M1_ 216.43917736
PIT: SUS-PR3_M1_ -0.969715063742
PIT: SUS-PR2_M1_ 0.0
PIT: SUS-PRM_M1_ 16.5389045477
PIT: SUS-SR3_M1_ -0.271161516136
PIT: SUS-SR2_M1_ -4.54283499983
PIT: SUS-SRM_M1_ 8.67872423671
PIT: SUS-ITMX_M0_ -0.70503574262
PIT: SUS-ITMY_M0_ -0.40533570994
PIT: SUS-ETMX_M0_ -0.90667144337
PIT: SUS-ETMY_M0_ -0.857070888167
PIT: SUS-BS_M1_ 0.624958316139
YAW: SUS-IM1_M1_ 0.0
YAW: SUS-IM2_M1_ 0.0
YAW: SUS-IM3_M1_ 0.0
YAW: SUS-IM4_M1_ 48.1848550634
YAW: SUS-PR3_M1_ -0.349704714379
YAW: SUS-PR2_M1_ 0.0
YAW: SUS-PRM_M1_ 5.76586403042
YAW: SUS-SR3_M1_ 0.0
YAW: SUS-SR2_M1_ -2.83357133757
YAW: SUS-SRM_M1_ -3.72819321526
YAW: SUS-ITMX_M0_ -0.420298950499
YAW: SUS-ITMY_M0_ 0.349713072835
YAW: SUS-ETMX_M0_ 0.482002886834
YAW: SUS-ETMY_M0_ -0.467300066782
YAW: SUS-BS_M1_ -0.0339036457322
The attached screenshot shows what happened when I moved IM1 tonight.
Images attached to this report
