Reports until 09:06, Friday 12 December 2025
H1 General
matthewrichard.todd@LIGO.ORG - posted 09:06, Friday 12 December 2025 (88494)
Yesterday reseting XARM

Yesterday morning during locking attempts I noticed the ring heaters in the XARM were set incorrectly, and ETMX was completely off. I'm not completely sure why this happened, but my guess at this point is that after using the inverse filters last week, someone accepted SDFs or reverted to the safe values and these inverse filters were turned off but the set values were not restored in the nominal state. I'll try and understand if we can add this check to the TCS_RH_PWR guardian.

Anyway, I reused the inverse filters last night for ETMX and set them back to nominal this morning with the same set power.

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