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Reports until 03:23, Tuesday 19 March 2019
H1 General
thomas.shaffer@LIGO.ORG - posted 03:23, Tuesday 19 March 2019 (47650)
Out of Observing Due to Violins and Violin GRD

Out of observing from 09:26-10:20 UTC

The ETMX mode 9 (516.781Hz) started increasing and was already high. I went to open the log for the VIOLIN_DAMPING Guardian node but could not. Looking at the code, it was logging a dictionary for every mode for every suspension on every loop of the run method. I assume this was put in place for debugging purposes, but this is not healthy. I commented that out and reloaded the node but it went into error because it reloaded on the run method and there was some variables defined in main. Pause, manual, reload, fixed.

There were a few SDF diffs that would pop up from 2nd harmonic damping filter gains set by the guardian. I unmonitored those.

Mode 7 & 9 (516.678 Hz & 516.781 Hz)  are tough to damp without ringing up the other since they are so close. Also, the Guardian will not allow you to change the gain if it has turned the gain off itself. This may need some rethinking.

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