Reports until 14:06, Friday 18 October 2024
H1 AOS
sheila.dwyer@LIGO.ORG - posted 14:06, Friday 18 October 2024 (80746)
PSL NPRO current reduced

Sheila, Vicky, remote inputs from Jenne and Jason

We noticed that more of our low noise locklosses have been tagged with Camilla's IMC tag (which we think is related to the PSL glitches) since the laser current was raised (8 out of 15 locklosses were tagged 10/15-10/18), compared to the time since the IMC servo gain redistribution revert (10/10 to 10/15 1 lockloss out of 12 was tagged).  (Having this IMC tag made it very easy to do this check). 

After emailing with the PSL team, we decided to turn the current back down to 2.133A at the next lockloss. Vicky's screenshot shows us slowly lowering the current at 20:05 UTC.

 

Images attached to this report