Reports until 15:52, Tuesday 28 May 2024
H1 OpsInfo
thomas.shaffer@LIGO.ORG - posted 15:52, Tuesday 28 May 2024 (78100)
Two minor changes in Locking_Arms_Green and Find_IR

I made two minor changes that I tested out during relocking today.

LOCKING_ARMS_GREEN state will not run increase flashes if the SEI state is not nominal in the respective arm. This is to stop increase flashes aligning to while an ISI is tripped and aligning to a bad spot. It will notify "Arm SEI not nominal, no I.F. until resolved", but I couldn't get it to stay up for long before other notifications would get in the way. Regardless, it wont run I.F. and will work for unattended times.

In ALS_DIFF  the find IR used to step the offset and then do an instantaneous check to see if there was any resonance with a low threshold. We've gotten unlucky a few times where it dipped just below the threshold during the check. To remove luck from this, I have it now grab data every step and look at the max. The downside to this is that if there is an nds issue, it will fail. I also increased the fine tune IR step size from 3 ->5 and it seemed to work well.