cheryl.vorvick@LIGO.ORG - posted 16:19, Friday 24 July 2015 (19916)
PR3 changes alignment without an obvious requested change:
The morning around 17:42UTC, PR3 moved but there was no alignment slider or other requested alignment change.
Two plots show this:
Plot 1: 3 channels
- H1:SUS-PR3_M3_WIT_PMON - red
- H1:SUS-PR3_M3_OPLEV_PIT_OUTPUT - green
- H1:SUS-PR3_M1_OPTICALIGN_P_OFFSET - blue
- blue trace, alignment slider, 17:09 to 17:57(end of plot) no change
- red and green traces, pmon and oplev pitch, 17:42 optic takes a step
Plot 2: 9 optic alignment channels, ISI pmon, POPAIR, TEST, and IMC power
- H1:SUS-PR3_M3_OPLEV_PIT_OUTPUT
- H1:SUS-PR3_M3_WIT_PMON
- H1:SUS-PR3_M3_OLDAMP_P_INMON
- H1:SUS-PR3_M3_DITHER_P_INMON - no change
- H:SUS-PR3_M3_LOCK_P_INMON - no change
- H1:SUS-PR3_M2_OLDAMP_P_INMON
- H1:SUS-PR3_M2_DITHER_P_INMON - no change
- H1:SUS-PR3_M2_LOCK_P_INMON - no change
- H1:SUS-PR3_M1_DAMP_P_INMON
- H1:SUS-PR3_M1_OPTICALIGN_P_OFFSET
- H1:SUS-PR3_M1_DITHER_P_INMON - no change
- H1:SUS-PR3_M1_LOCK_P_INMON - no change
- H1:SUS-PR3_M1_ISIWIT_PMON - steady
- H1:LSC-POPAIR_A_LF_OUTPUT
- H1:SUS-PR3_M1_TEST_P_OUTPUT
- H1:IMC-PWR_IN_OUTPUT
- nothing that explains why the optic would move
Images attached to this report
