Dead channels at Roman Pots

retrieve list of dead and noisy channels

The list of dead and noisy channels can be obtained by using extract_vfat_channels script written by Dominik Mierzejewski. The description of this script can be found at https://twiki.cern.ch/twiki/bin/view/TOTEM/CompComTools.

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convert this list to XML file

To convert this list to XML file we can use deadChannelsToXML.py which is described at https://twiki.cern.ch/twiki/bin/view/TOTEM/CompComTools.

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use AnalysisMask in order to exclude channels from simulation and reconstruction

To exclude channels from simulation or reconstruction we have to simply check whether an AnalysisMask contains this channels and then (if it is true) remove this channels from vector (or sth similar) of channels. For Roman Pots it is done in:

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Reconstruction

In class TotemRawData (TotemRawData/RawToDigi/plugins/Raw2DigiProducer.cc) in method rpDataProduce

Simulation

In class RPDigiProducer (SimTotem/RPDigiProducer/src/RPDigiProducer.cc)

• reading AnalysisMask

In method beginJob (after software migration it is very likely that this method will change to beginRun)

• removing dead and noisy channels

In method produce, using DeadChannelsManager (SimTotem/RPDigiProducer/src/DeadChannelsManager.cc)

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NOTE If you need more specific documentation, please look into source code of class mentioned in this documentation.

NOTE2 All scripts presented in this section (extract_vfat_channels, deadChannelsToXML.py) works only for Roman Pots.

-- JakubSmajek - 09-Sep-2011