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Reports until 14:34, Friday 10 May 2024
H1 ISC (OpsInfo)
ryan.short@LIGO.ORG - posted 14:34, Friday 10 May 2024 (77767)
CHECK_VIOLINS State Now Turns on 2W Damping

I've added a parameter into the CHECK_VIOLINS_BEFORE_POWERUP state which engages 2W damping settings if the saturation checker flags that it's not safe to power up. Once someone requests ISC_LOCK to a higher state to continue locking and the saturation check passes, all damping will be turned back off before continuing.

Speaking of 2W damping settings, I've edited the VIOLIN_DAMPING Guardian to now allow 2W damping for all four quads (previously settings were only enabled for ITMX and ETMX). For modes which have dedicated settings for 2W damping, the Guardian will use those, and for those that don't, the otherwise nominal settings will be used. We had the opportunity to test these 2W damping settings earlier in the week when violins were rung up, and all of them appear to work well, motivating these improvements to our automated damping.

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