| Geant4 Cross Reference |
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4 Geant4 - an Object-Oriented Toolkit for S
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7 ExUCN
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9 Peter Gumplinger
10 TRIUMF, Vancouver, Canada
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12 This example exhibits the functionality of UCN
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14
15 1- GEOMETRY DEFINITION
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17 The geometry consists of a single hollow
18 placed in a world.
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20 Default World Size: G4Box - 1m x 1m x 100
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22 The pipe wall is made of G4_Ni while the
23 the inside of the pipe is made from G4_Ga
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25 The G4UCNMaterialPropertiesTable properti
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27 "REFLECTIVITY" = 1
28 "DIFFUSION" = 0.1
29 "FERMIPOT" = 252.0 neV
30 "SPINFLIP"= 0.
31 "LOSS" = 12.5e-5
32 "LOSSCS" = 0.
33 "ABSCS"= 4.49 // 1/v loss cross-sectio
34 "SCATCS" = 18.5 // (incoherent) "elastic
35
36 The MicroRoughnessParameters are:
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38 Roughness correlation length w = 30nm
39 Surface roughness b = 1nm
40 # of angles theta_i in the look-up tables
41 # of energie bins in the look-up tables:
42 min. and max. values of theta_i: 0*degree
43 min. and max values of Energy: 1neV and 1
44 # of angles theta_o in the look-up table
45 # of angels phi_o in the look-up table
46 angular cut: 0.01*degree
47
48 The default step limits in the vacuum is
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50 The simulation is in a G4UniformGravityFi
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52 2- PHYSICS LIST
53
54 The ExUCNPhysicsList defines only G4Neutro
55 G4AntiNeutrinoE, G4MuonPlus, G4MuonMinus a
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57 Through ExUCNExtraPhysics the following pr
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59 G4StepLimiter
60 G4UserSpecialCuts
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62 and in ConstructUCN()
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64 G4UCNLoss
65 G4UCNAbsorption
66 G4UCNMultiScattering
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68 3- AN EVENT : THE PRIMARY GENERATOR
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70 The primary kinematic consists of a singl
71 uniform between 1neV and 100neV, from the
72 into 4pi solid angle.
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74 A RUN is a set of events.
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76
77 4- VISUALIZATION
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79 The Visualization Manager is set in the m
80 The initialisation of the drawing is done
81 /control/execute vis.mac
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83 5- HOW TO START ?
84
85 This example handles the program arguments
86 It can be run with the following optional a
87 % ExUCN [-m macro ] [-u UIsession] [-t nThr
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89 The -t option is available only in multi-th
90 and it allows the user to override the Gean
91 threads. The number of threads can be also
92 environment variable which has the top prio
93
94 - execute ExUCN in 'batch' mode from m
95 % ExUCN -m ExUCN.in > ExUCN.ou
96
97 - execute ExUCN in 'interactive' mode
98 % ExUCN
99 ....
100 Idle> type your commands, for
101 Idle> run/beamOn 1
102 ....
103
104 6- HISTOGRAMS
105
106 - no histograms for now