The following report has been submitted to the On-call interface.
On-call events -> ITF Operation
Title: recovery of itf lock
Author(s): mantovani
| Called at: 18:00, 02-06-2023, by: Magazzu |
| Remote intervention: Started: 18:00, 02-06-2023; Ended: 22:30, 02-06-2023 |
| On-site intervention: Started: ; Ended: |
| Status: Resolved |
| Operator when issue resolved: Magazzu |
Details:
The lock acquisition was not working anymore
I've tuned the lock acquisition parameters starting from 100mW (especially DARM gain and phase) at each step
I've also changed the target ugf for DARM @ 3f from 65 Hz to 55Hz
we have unlocked going at LN2
we leave in DC readout to let Marco recover the alignment before the opening of the tower
* Note that any files attached to this report are available in the On-call interface.