The following report has been submitted to the On-call interface.
On-call events -> Interferometer Sensing & Control
Title: CH tuning
Author(s): casanueva, cifaldi
| Called at: 12:45, 13-07-2025, by: None |
| Remote intervention: Started: 12:45, 13-07-2025; Ended: 14:30, 13-07-2025 |
| On-site intervention: Started: ; Ended: |
| Status: Resolved |
| Operator when issue resolved: Montanari |
Details:
Since the situation of the interferometer was so unstable, we decided together with Michal to make a step of the CH already on Sunday. Based on past experience we made a 10% common decrease of the CH. We waited for 1 hour and we tried to relock. The lock acquisition was succesful at the second attempt. FIgure 1 shows the evolution of the DIFFp TY gain, which is significantly better than in the morning.
Also FIgure 2 shows the evolution of the sidebands in the CITF during the CH transient. There is not a significant variation, which is encouraging.
* Note that any files attached to this report are available in the On-call interface.
