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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.

There will be many empty channels in FT0 plots for COSMICS. This can be safely ignored

FT0: Amplitude vs channel#

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

ft0_ampl_channel

Charge amplitude distribution vs channel ID [0-207]. It should be non-empty.

Units: Charge is expressed in ADC channels.

Actions:

  • if one or more empty channels (crosscheck known-issues file) - call FIT-on-call.

FT0: Time vs channel#

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

ft0_time_channel

The time distribution vs channel ID [0-207]. It should be non-empty.

Units: Time is expressed in TDC channels, channel = 13 ps.

Actions:

  • if one or more empty channels (crosscheck known-issues file) - call FIT-on-call.

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