Frontemare di Trieste
Istituto Nazionale di Fisica Nucleare
Sezione di Trieste

Noise and Bad Channels

Total of ~2.6 million of channels

  • ~90% of the channels are active in the DAQ.
  • 6 half-ladders switched off due to electrical problems (~4.2% of the total channels)
  • Few modules manually masked due to noisy areas.
  • Detector Algorithm (DA) runs online to detect noisy channels

  • Average p-side noise ~ 2.4 ADC ch
  • Average n-side noise < 3.5 ADC ch
  • Stable noise vs time
  • More bad channels on layer 6 than on layer 5 (Mainly originating from SINTEF modules that exhibit a noise level above the average one)
  • Bad Channels vs Time (Two examples: pp run period, PbPb run period)
  • Average Noise vs Time (Two examples: pp run period, PbPb run period)

Proton-Proton run

Lead-Lead run

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