Virgo Logbook

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Virgo Runs (O4b)

gherardini - 23:05 Friday 26 April 2024 (64108)

Operator Report - Afternoon shift

In this afternoon shift science mode stopped from 16:00UTC to 19:02UTC for daily calibration and commissioning (PRCL offset scan and ISC noise injections) and for troubleshooting from 14:45UTC to 14:48UTC to solve the problem with Hrec; the ITF unlocked during the commissioning and it relocked at the first attempt.

- guard tours(UTC):
17:40 --> 18:10
19:40 --> 20:10

Sub-system reports

ISC
- 18:24UTC: LSC injections (inject_lsc.py);
- 18:40UTC: ASC injections (inject_asc_test.py);
because of a lack of time injections on SSFS and PSTAB not done, it will be run tomorrow afternoon;

Other
from 14:07UTC to 14:45UTC we had a strange behavior of Hrec with the range going up and down randomly and the sensitivity too, it was because of a test done by Alain on a test version of Hrec that by mistake was writing in a wrong shared memory.

Images attached to this report

64108_1714165493_Screenshot 2024-04-26 at 23-04-01 DMS Event Monitor.png

64108_1714165505_Screenshot 2024-04-26 at 23-04-27 Plots for logbook report.png

Comments to this report:

masserot - 20:15 Friday 26 April 2024 (64111)

Offline Hrec test setup

While installing an offline Hrec test setup in the CascinaTest Cm domain, this afternoon I duplicated the Hrec configuration, updating the FD_IN parameters but forgotten to update the FDOUT ones .As consequence, when I started this offline server on the same host where the online Hrec server is running (olserver52), there were some troubles with the Hrec online data .I didn’t realize it was creating problems as I was working with offline data and in the CascinaTest Cm domain. When I realized this , I contacted the Control room and I fxed the issue .

This issue started at 2024-04-26-14h08m02-UTC and was fixed at 2024-04-26-14h40m34-UTC