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Detector Operation (Operations Report)
zaza - 16:33 Friday 24 April 2026 (69031) Print this report
Operator Report - Daily shift

ITF found DOWN in UPGRADING mode.

Planned activities:
Free space ALS / LB->EIB pointing (ISYS group, Cavalieri, Nenci). Still in progress.
NI cryotrap repair (Vacuum group)
- Change in the placement of ENV seismic probes ("yellow mushrooms") in the clean rooms of the central building under the towers (Tringali, Menzione)

Other activities:
- Missing data since tonight at midnight on HVAC channels: the problem was solved by starting the process zFbsInf
- Investigation ongoing due to slight anomalies on some signals: IB cryotrap valve closed (Vacuum group)

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Comments to this report:
sentenac - 10:53 Monday 27 April 2026 (69039) Print this report

During one week (from 2026-04-17-06h20m15 until 2026-04-24-07h13m06-UTC)  there were 2 instances of the same process (BACnetServer) running at the same time, explaining caotic loss of data at level of slow frame builder zFbsInf.

First trial of starting duplicated process was correctly excluded, and  rejected by Cm:

2026-04-17-06h19m01-UTC>INFO...-Cm> Name already used.

2026-04-17-06h19m01-UTC>INFO...-Cm> Error in server initialization.

However following insisting trials were not excluded.

The (old) instance was killed manually around 2026-04-24-07h13m06-UTC, when a new process of BACnetServer was restarted properly.

Independently, zFbsInf was restarted a bit later at 2026-04-24-07h24m51-UTC, insuring clearing the problem in the data transmission chain.

Everything back to normal.

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