MBTS

There was discussion about MBTS thresholds at: https://its.cern.ch/jira/browse/ATR-11388

Tim Martin closed the issue

Tim Martin closed ATR-11388.


Resolution: Fixed

After optimisation and discussions, the final MBTS settings used for low-mu data campaign are listed below.

Voltages were altered such that the average offline charge is now 9 pC.

  • A0 876 V
  • A1 872 V
  • A2 888 V
  • A3 851 V
  • A4 864 V
  • A5 840V
  • A6 813V
  • A7 825V

  • A8 950 V
  • A10 887 V
  • A12 888 V
  • A14 921 V

  • C0 876 V
  • C1 872 V
  • C2 888 V
  • C3 851 V
  • C4 864 V
  • C5 840 V
  • C6 813 V
  • C7 825 V

  • C8 950 V
  • C10 887 V
  • C12 888 V
  • C14 921 V

Thresholds:

All 16 inner counters now have a L1 threshold of 100 mV (approx. 0.05 pC offline)

All 8 outer counters now have a L1 threshold of 150 mV (approx 0.075 pC offline)

This difference between inner and outer is due to large cavern noise rate, predominately on C side.

The cavern background rate with these settings of L1_MBTS_1 is 1 Hz per BCID.

-- GrzegorzPawelGach - 2015-06-10

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Topic revision: r1 - 2015-06-10 - GrzegorzPawelGach
 
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