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FIT-FT0#

FT0: General#

All QC plots are generated in 5 min. cycles. The histogram contents are reseted after each cycle. Please wait at least 10 min. from the start of the RUN to judge about the quality of collected data.

If a non-critical (i.e. expendable) QC task fails, please add a bookkeeping entry about it.

FT0: Out of bunch collisions#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

ft0_bc_triggers

BC vs trigger correlation for the events which were detected but are not aligned (out-of-bunch) with LHC filling scheme. The number of out-of-bunch events depends on the trigger settings. For the Vertex trigger should be almost ZERO counts.

Actions:

  • If ERROR/WARNING - make a bookkeeping entry.

FT0: CFD efficiency#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

ft0_cfd_efficiency

Efficiency for getting charge information in each detector channel. Horizontal lines show the levels below which the warnings/errors are raised.

Actions:

  • If ERROR/WARNING - make a bookkeeping entry.

Known issues#

  • channels 60-63 (FT0A side) are OFF in PHYSICS and COSMICS runs
  • channels 139 and 176-179 (FT0C side) are OFF in PHYSICS and COSMICS runs