Gabriele Cosmo
43 lines
1.3 KiB
Markdown
43 lines
1.3 KiB
Markdown
\page ExampleHepMCEx02 Example HepMCEx02
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This example demonstrates how to interface primary particles in Geant4
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with various event generators via the HepMC Monte Carlo event interface.
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This is another example having the same generator action as
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[HepMCEx01](../../html_HepMCEx01/html/ExampleHepMCEx01.html),
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but much simpler user control.
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## Primary Generator
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H02PrimaryGeneratorAction has HepMCG4Interface as the generator.
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There are two types of generators provided as samples. One generator reads
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primary information from a HepMC Ascii file (data/example_MyPythia.dat).
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The other one generates primaries directly invoking PYTHIA routines
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in every event.
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## Geometry
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A simplified collider-type geometry, which consists of
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- endcap calorimeter (a set of tubes filled with lead),
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- barrel calorimeter (tube filled with lead),
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- barrel muon detector (8 sets of plates filled with Ar),
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- endcap muon detecror, (a set of tubes filled with Ar) and
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- uniform magnetic field along the z axis of 3 Tesla at the
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central region.
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## Physics List
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FTFP_BERT predefined physics list
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## User actions
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All particles except muons are killed in the calorimeter section.
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## Installation
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See ["eventgenerator/HepMC" page](../../html/Examples_HepMC.html) how to build this example.
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## Execution
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```
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% /HepMCEx02 hepmc_pygen.in
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```
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