Reports until 09:32, Thursday 05 December 2024
H1 CAL (CAL)
francisco.llamas@LIGO.ORG - posted 09:32, Thursday 05 December 2024 - last comment - 10:44, Friday 06 December 2024(81630)
Changed drivealign L2L gain from kappa_tst

FranciscoL, SheilaD

Changed H1:SUS-ETMX_L3_DRIVEALIGN_L2L_GAIN by 3.63 % using KappaToDrivealign.py at gps 1417450784.

Script output:

Average H1:CAL-CS_TDEP_KAPPA_TST_OUTPUT is -3.6267% from 1.
Accept changes of    
H1:SUS-ETMX_L3_DRIVEALIGN_L2L_GAIN from 191.711517 to 198.664299
Proceed? [yes/no]
yes
Changing
H1:SUS-ETMX_L3_DRIVEALIGN_L2L_GAIN
H1:SUS-ETMX_L3_DRIVEALIGN_L2L_GAIN => 198.6643

First figure (kappa2drivealign_ndscope) is an ndscope of the relevant channels. The the second plot (top to bottom) is CAL-CS_TDEP_KAPPA_TST_OUT with a verticar marker aligned at a time where the uncertainty from CAL-CS_TDEP_PCAL_LINE3_UNCERTAINTY (third plot)  increased. This increase in uncertainty is expected from turning off lines before calibration measurement.

KAPPA_TST_OUT is around 1 from minute 5 to the marker, which is the objective of changing the drive gain.

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Comments related to this report
francisco.llamas@LIGO.ORG - 10:44, Friday 06 December 2024 (81651)

Attaching trend of CAL-CS_TDEP_KAPPA_TST from long lock stretch after changes.

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