| 1 | $Id: README,v 1.5 2004/05/31 18:13:04 gum Exp $
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| 2 | -------------------------------------------------------------------
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| 3 |
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| 4 | =========================================================
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| 5 | Geant4 - an Object-Oriented Toolkit for Simulation in HEP
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| 6 | =========================================================
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| 7 |
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| 8 | ExampleN06
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| 9 | ----------
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| 10 |
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| 11 | This example presently illustrates the following basic concepts, and in
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| 12 | particular (indicated with ***), how to use G4 for optical photon
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| 13 | generation and transport. An extended example of what is possible
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| 14 | in Geant4 with optical photons can be found at
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| 15 | examples/extended/optical/LXe.
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| 16 |
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| 17 | main()
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| 18 | ------
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| 19 |
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| 20 | ==> define Random Number Engine and initial seed
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| 21 |
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| 22 | G4VUserPhysicsList
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| 23 | ------------------
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| 24 |
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| 25 | ==> define particles; including *** G4OpticalPhoton ***
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| 26 | define processes; including *** G4Cerenkov ***
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| 27 | *** G4Scintillation ***
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| 28 | *** G4OpAbsorption ***
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| 29 | *** G4OpRayleigh ***
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| 30 | *** G4OpBoundaryProcess ***
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| 31 |
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| 32 | G4VUserDetectorConstruction
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| 33 | ---------------------------
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| 34 |
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| 35 | ==> define material: Air and Water
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| 36 | define simple G4box geometry
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| 37 | *** add G4MaterialPropertiesTable to G4Material ***
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| 38 | *** define G4LogicalSurface(s) ***
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| 39 | *** define G4OpticalSurface ***
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| 40 | *** add G4MaterialPropertiesTable to G4OpticalSurface ***
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| 41 |
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| 42 | G4VUserPrimaryGeneratorAction
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| 43 | -----------------------------
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| 44 |
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| 45 | ==> Use G4ParticleGun to shoot a charge particle into a Cerenkov radiator
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| 46 |
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| 47 | ==> A messenger command allows to define interactivly the polarization of an
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| 48 | primary optical photon (see for instance optPhoton.mac)
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| 49 |
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| 50 | G4UserRunAction
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| 51 | ---------------
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| 52 |
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| 53 | ==> define G4Timer (start/stop)
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| 54 | set verbose levels
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| 55 |
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| 56 | G4UserStackingAction
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| 57 | --------------------
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| 58 |
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| 59 | ==> show how to count the number of secondary particles in an event
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| 60 |
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| 61 | Visualisation
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| 62 | -------------
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| 63 |
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| 64 | The Visualization Manager is set in the main().
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| 65 | The initialisation of the drawing is done via a set of /vis/ commands
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| 66 | in the macro vis.mac. This macro is automatically read from
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| 67 | the main in case of interactive running mode.
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| 68 |
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| 69 | The detector has a default view which is a longitudinal view of the tank.
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| 70 | The tracks are drawn at the end of event, and erased at the end of run.
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| 71 |
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| 72 | How to start
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| 73 | ------------
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| 74 |
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| 75 | - compile and link to generate an executable
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| 76 | % cd N06
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| 77 | % gmake
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| 78 |
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| 79 | - execute N06 in 'batch' mode from macro files
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| 80 | % exampleN06 exampleN06.in
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| 81 |
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| 82 | - execute N06 in 'interactive mode' with visualization
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| 83 | % exampleN06
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| 84 | ....
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| 85 | Idle> type your commands. For instance:
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| 86 | Idle> /control/execute optPhoton.mac
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| 87 | ....
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| 88 | Idle> exit
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| 89 |
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