minhyo.kim@LIGO.ORG - posted 15:51, Tuesday 05 March 2024 - last comment - 14:21, Monday 11 March 2024(76131)
OMC ASC signal comparison
From Minhyo & Preet After changing of OMC control, it might be good to check the signals. (Refer to Jennie's alog: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=76126, https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=76103) Figures are comparison between Mar. 5 and one of the date in O4a (Jan. 2. 2024): 1) SUS-OM3_LOCK comparison with both PIT and YAW 2) SUS-OMC_ASC comparison with both PIT and YAW 3) OMC-ASC_QPD A comparison with both PIT and YAW 4) OMC-ASC_QPD B comparison with both PIT and YAW Seems that the signal went up in high frequency (4 ~ 10 Hz), which is pretty similar with QPD signals.
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Update on Mar. 11 After locking of detector, compared the signals between O4a (Jan. 2, 2024, 05:00:00 UTC) and last Sat. (Mar. 9, 2024, 10:00:00 UTC). 1) SUS-OM3_LOCK comparison with both PIT and YAW 2) SUS-OMC_ASC comparison with both PIT and YAW 3) OMC-ASC_QPD A comparison with both PIT and YAW 4) OMC-ASC_QPD B comparison with both PIT and YAW QPD signals went down from the last time (Mar. 5), which is similar to SUS (OM3, OMC) signals.
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