The following report has been submitted to the On-call interface.
On-call events -> Injection System
Title: Fmoderr misbehaving
Author(s): gosselin
| Called at: 21:00, 25-10-2024, by: Gherardini |
| Remote intervention: Started: 21:00, 25-10-2024; Ended: 23:00, 25-10-2024 |
| On-site intervention: Started: ; Ended: |
| Status: Resolved |
| Operator when issue resolved: Gherardini |
Details:
I have been called by Fabio Diego and Manuel who were still in control room because Fmoderr was behaving strangely when reaching the final steps.
I investigated from remote together with them in control room. At the end of the day we noticed that the 1111 Hz was not presented in the FFT of IMC REFL PRE as it should be.
This was due to the perturb cable if the IMC rampeauto that has not been replugged after the shift of Monday. Somehow the ITF was stable enough between Monday and today to work with a mistuned Fmoderr.
Fabio went in piscina, he replugged the cable and we got the 1111 back. We did a check of Fmoderr starting from INJ in down and it worked correctly.
Lock acquisition in progress.
* Note that any files attached to this report are available in the On-call interface.