Reports until 10:09, Thursday 28 August 2025
H1 SUS (SUS)
ibrahim.abouelfettouh@LIGO.ORG - posted 10:09, Thursday 28 August 2025 - last comment - 10:27, Thursday 28 August 2025(86614)
Weekly In-Lock SUS Charge Measurement - FAMIS 28420

Closes FAMIS 28420, last checked in alog 86471.

IX did not run with the following error popping (only error lines copied):

Coherence for bias_drive_bias_off is 0.015409917227075794, which is below the threshold of 0.1. Skipping this measurement
Cannot calculate beta/beta2 because some measurements failed or have insufficient coherence!
Cannot calculate alpha/gamma because some measurements failed or have insufficient coherence!
Something went wrong with analysis, skipping ITMX_13_Hz_1440255043"

Coherence for bias_drive_bias_off is 0.0825334918693312, which is below the threshold of 0.1. Skipping this measurement
Cannot calculate beta/beta2 because some measurements failed or have insufficient coherence!
Cannot calculate alpha/gamma because some measurements failed or have insufficient coherence!
Something went wrong with analysis, skipping ITMX_13_Hz_1438440647

Previously analyzed ETMY_12_Hz_1439650262 - skipping

Analyzing data in ITMX_13_Hz_1437835843...
Reading time series for bias_drive_bias_on
Reading time series for L_drive_bias_on
Reading time series for bias_drive_bias_off
Reading time series for L_drive_bias_off
Coherence for bias_drive_bias_off is 0.07205627679480447, which is below the threshold of 0.1. Skipping this measurement
Cannot calculate beta/beta2 because some measurements failed or have insufficient coherence!
Cannot calculate alpha/gamma because some measurements failed or have insufficient coherence!
Something went wrong with analysis, skipping ITMX_13_Hz_1437835843
 

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Comments related to this report
camilla.compton@LIGO.ORG - 10:27, Thursday 28 August 2025 (86619)

Thanks Ibrahim! In the past we've concluded that this is a good sign and means the charge build up on ITMX is low: 81858