Reports until 09:56, Tuesday 21 October 2025
H1 IOO
sheila.dwyer@LIGO.ORG - posted 09:56, Tuesday 21 October 2025 (87603)
IMC throughput check, fix for laser power guardian

After my change to the laser power guardian (87545 87581) caused a problem last night (87598) , I edited it so that the power scaling is set to a function.  If the IMC is locked, it will use IMC-IM4_TRANS_NSUM_OUTMON , if not it will use H1:IMC-PWR_IN_OUT16.  

I also made a plot to check if the IMC throughput is dropping as we power up, it is dropping but only by 0.4%.  

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