Reports until 22:49, Tuesday 13 October 2026
H1 IOO (OpsInfo)
jennifer.wright@LIGO.ORG - posted 22:49, Tuesday 13 October 2026 (92303)
Tuning JAC ASC measurement

I did some trials for a measurement of the JAC ASC open loop gain tonight. The template I used is saved in userapps/ioo/h1/templates/dtt/JAC_DOF1_P.xml and I copied it over from the template for INP1_P and slowly turned up the excitation.

I still can't get a good measurement and its getting late so I will come back to this tomorrow.

NB: I had some trouble leaving the IMC in offline as ISC_LOCK kept transitioning to PREP_FOR_LOCKING and re-locking it. Also confused myself by selecting a higher number state and so ISC_LOCK went to state 'LOCKING_ALS'.  I finally realised I had to take ISC_LOCK to DOWN, pause this guardian and take the IMC_LOCK guardian to MANUAL. (Thanks Jim for the help.)

Leaving the ISC_LOCK in PREP_FOR_LOCKING as I found it with IMC_LOCK back in managed state.