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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