Required MarlinReco processors are outlined in MarlinReco Manual

Setting up Marlin:

My file directory used for reconstruction is ~/public_ppe/ExampleDSTAnalysis where I initialise ILCSoft with, build the Marlin processor using and finally run to set up the environment corretly.

Running Marlin:

Marlin steer_ild.xml

steer_ild.xml uses e-gun.slcio and corresponding GearOutput.xml which have been generated in Mokka and copied from ~/public_ppe/Mokka_Test/ParticleGun/


/generator/generator particleGun
/gun/particle e-
/gun/energy 100 GeV
/gun/momentumSmearing 5 GeV
/gun/position 0 0 0
/gun/direction 1 0 1
/run/beamOn 3000

Looking At SLCIO Files:

Marlin lookAtFilenew.xml

To view what the SLCIO file contains.

Current Status


Required processors for reconstruction of e- particle gun:

  • MyTPCDigiProcessor
  • MyVTXDigiProcessor
  • MySimpleCaloDigi
  • MyTrackCheater or MyLEPTrackingProcessor
  • MyClusterCheater or MyTrackwiseClustering
  • MyWolf


Unknown processors:

  • MyTrackCheater
  • MyClusterCheater
  • MyTrackwiseClustering
  • MyWolf

These are required for the Particle Flow Algorithm processor of type "Wolf" (also 'unknown') which creates the Reconstructed Particle Collection called 'RecoParticles' which will then be used to look at the physics of the events.

Marlin runs OK when using MyTPCDigiProcessor, MyVTXDigiProcessor, MySimpleCaloDigi and MyLEPTrackingProcessor, but not when including the processor MyTrackwiseClustering for the next part of reconstruction:

[ DEBUG1 "Marlin"] hello from ECALGarlicTrainer destructor 0x2b94baf9abe0
[ DEBUG1 "Marlin"] hello from ECALGarlic destructor 0x2b94baf9afa0
A runtime error occured - (uncaught exception):
lcio::Exception: ProcessorMgr::registerProcessor: unknown processor with type TrackwiseClustering !

Marlin will have to be terminated, sorry.

-- GavinMurdoch - 2013-11-28

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Topic revision: r2 - 2013-11-28 - GavinMurdoch
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