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AdV-ISC (Commissioning up to first full interferometer lock)
casanueva - 22:54 Monday 30 January 2023 (58631) Print this report
Relock

After the unlock of the ITF, and the problems with the ALS_NEB process, we tried to relock the ITF, but we didn't manage to reach CARM null 1f, since it didn't jump any of the times. Notice that any lock acquisition was tried after the SR CHROC change. We tried putting back the strategy of moving the PR vertically but it didn't work.

We leave the ARMS locked on the IR.

Comments to this report:
casanueva, mantovani - 18:33 Tuesday 31 January 2023 (58651) Print this report

At the beginning of yesterday's shift, we tried to stabilize the state of the etalon loop by setting a working point easier to reach (19.038 @ 14.56 UTC). As the loop was not working fast enough we tried a working point even closer to the present one (19.138 @ 17.11 UTC). Since the thermalization was still too slow, we decided to complete the etalon test and change the set point to 19.3 @ 17.59 UTC.

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