Gabriele Cosmo
51 lines
1.9 KiB
Markdown
51 lines
1.9 KiB
Markdown
\page Examplegflash3 Example gflash3
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## Geometry and SD
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This example uses mass geometry to create the main volume (homogeneous material) and use it
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as an envelope for the parametrisation, but the readout geometry (crystals)
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are defined in the parallel geometry, together with the sensitive detector
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to store the hits.
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Geometry and sensitive detector are defined in:
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- ExGflash3DetectorConstruction
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- ExGflash3ParallelWorld
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- ExGflash3SensitiveDetector
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## Details of implementation:
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- ExGflash3.cc:
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Parallel world needs to be registered;
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Physics of the parallel world needs to be registered so sensitive detector can
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collect hits;
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Fast simulation is activated for mass world (where envelope is);
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- ExGflash3DetectorConstruction:
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Only main volume (box) with material is created;
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Creation of G4Region associated to G4LogicalVolume of that box;
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Initialization of GFlash, attaching it to the envelope (G4Region);
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- ExGflash3ParallelWorld:
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Construction of identical volume for the main box as in the mass geometry,
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but with dummy material (it is not used anyway);
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Construction of individual crystals for the readout geometry;
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Creation of the sensitive detector;
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- ExGflash3SensitiveDetector:
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Uses pointer to ExGflash3DetectorConstruction to get the crystals for the readout;
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## Macros
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- vis.mac - macro for use in interactive mode (default, if no arguments are specified)
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- test.mac - macro for tests: 50 GeV electrons are shot in the direction of the detector
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(along z axis), 10 times. As they enter the parametrisation envelope,
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the GFlash parametrisation is invoked and energy is deposited.
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The results are printed out:
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- energy in the most central crystal
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- energy in 3x3 crystals
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- energy in 5x5 crystals
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- number of created deposits
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- simulation time per event
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See also [Category "parameterisations/gflash"](../../html/Examples_gflash.html) documentation.
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