Problem 9934: PV infos (especially PV z pos) do not match references (from Presenter page /Shift/TRACK: PV Info)

System
TRACK
Severity
Report
Start date
2017-06-16 02:01
End date
2017-06-20 12:16
Runs affected
Reported by
Alessio Piucci on 2017-06-16 02:01

Comments

#1 by Alessio Piucci on 2017-06-16 02:01

The number of primary vertices and number of tracks do not match the reference. Called the piquet, the references have to be updated.

The PV z distribution look wider then the reference and with some long tails. The piquet says the distribution was fine in the previous fill. Investigating with the LHC people.

Logbook link

#2 by Giulio Dujany on 2017-06-20 12:18

Problem was due to the large ammount of beamgas events sent to the monitoring farm (the distribution of PV z for beamgas events is wider than for collision events)
Closed the problem with end date: 2017-06-20 12:16:00

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