Reports until 19:31, Monday 19 August 2019
H1 SQZ (CAL)
sheila.dwyer@LIGO.ORG - posted 19:31, Monday 19 August 2019 (51394)
squeezing investigations today

Jeff K, Sheila, Jenne,

Today we measured the cross correlation without squeezing, and squeezing at various squeezing angles, as well as the DARM sensing function at 2 differest SRCL offsets.  We wanted to do this before we move the spot positions tomorow, because we have seen that the cavity pole can increase as we change the spot positions and because we have seen that the sensing function can be fit with a SRCL offset at these "August" spot positions, while at the July positions there is a more complicated angular cross coupling involved.  We plan to repeat this set of measurements Wed, after the spot position move. 

We lost lock when we attempted to use a SRCL offset of 200, which had been OK in the past (50591).

While relocking we ran into 3 problems:

After relocking we got the measurements at a SRCL offset of 100.  I will post the squeezing data soon, and Jeff K is writting an alog about the sensing function measurements now.