1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // |
---|
27 | // $Id: Shoot.hh,v 1.9 2006/06/29 18:15:29 gunter Exp $ |
---|
28 | // GEANT4 tag $Name: geant4-09-04-beta-cand-01 $ |
---|
29 | // |
---|
30 | #ifndef SHOOT_HH |
---|
31 | #define SHOOT_HH |
---|
32 | |
---|
33 | #include "G4Timer.hh" |
---|
34 | #include "G4VPhysicalVolume.hh" |
---|
35 | #include "G4Navigator.hh" |
---|
36 | #include "G4ThreeVector.hh" |
---|
37 | #include "G4ios.hh" |
---|
38 | |
---|
39 | void Shoot(const G4int numShoot, |
---|
40 | G4VPhysicalVolume *pTopNode, |
---|
41 | const G4ThreeVector& pSource, |
---|
42 | const G4ThreeVector& pVec) |
---|
43 | { |
---|
44 | G4double physStep=kInfinity; |
---|
45 | G4int i; |
---|
46 | G4double safety; |
---|
47 | G4double Step; |
---|
48 | G4Navigator myNav; |
---|
49 | G4Timer timer; |
---|
50 | G4ThreeVector partLoc; |
---|
51 | G4VPhysicalVolume *located=0; |
---|
52 | |
---|
53 | myNav.SetWorldVolume(pTopNode); |
---|
54 | |
---|
55 | timer.Start(); |
---|
56 | |
---|
57 | for (i=numShoot;i>0;i--) |
---|
58 | { |
---|
59 | // G4cout << "#Loop " << i << G4endl ; |
---|
60 | |
---|
61 | partLoc=pSource; |
---|
62 | located=myNav.LocateGlobalPointAndSetup(partLoc,0,false,true); |
---|
63 | while (located) |
---|
64 | { |
---|
65 | /* |
---|
66 | G4cout << "Loc = " << partLoc << " Vec = " << pVec << G4endl ; |
---|
67 | G4cout << "Safety = " << safety << G4endl ; |
---|
68 | */ |
---|
69 | Step=myNav.ComputeStep(partLoc,pVec,physStep,safety); |
---|
70 | |
---|
71 | partLoc+=Step*pVec; |
---|
72 | myNav.SetGeometricallyLimitedStep(); |
---|
73 | located=myNav.LocateGlobalPointAndSetup(partLoc); |
---|
74 | }; |
---|
75 | } |
---|
76 | timer.Stop(); |
---|
77 | // G4cout << "Shots = " << numShoot << " " << timer << G4endl; |
---|
78 | } |
---|
79 | |
---|
80 | #include "G4TransportationManager.hh" |
---|
81 | #include "G4MagneticField.hh" |
---|
82 | #include "G4UniformMagField.hh" |
---|
83 | #include "G4ChordFinder.hh" |
---|
84 | #include "G4PropagatorInField.hh" |
---|
85 | #include "G4FieldManager.hh" |
---|
86 | #include "G4HelixExplicitEuler.hh" |
---|
87 | #include "G4HelixSimpleRunge.hh" |
---|
88 | #include "G4HelixImplicitEuler.hh" |
---|
89 | #include "G4ExplicitEuler.hh" |
---|
90 | #include "G4ImplicitEuler.hh" |
---|
91 | #include "G4SimpleRunge.hh" |
---|
92 | #include "G4SimpleHeum.hh" |
---|
93 | #include "G4ClassicalRK4.hh" |
---|
94 | #include "G4Mag_UsualEqRhs.hh" |
---|
95 | #include "G4CashKarpRKF45.hh" |
---|
96 | #include "G4RKG3_Stepper.hh" |
---|
97 | |
---|
98 | void MagneticShoot(const G4int numShoot, |
---|
99 | G4VPhysicalVolume *pTopNode, |
---|
100 | const G4ThreeVector& pSource, |
---|
101 | const G4ThreeVector& pVec, |
---|
102 | const G4double fieldValue, // ** already in tesla ** |
---|
103 | const G4double DeltaChord) // ** already in mm ** |
---|
104 | { |
---|
105 | /** Setting up the Magnetic field **/ |
---|
106 | |
---|
107 | G4UniformMagField magField (0.,0.,fieldValue); |
---|
108 | G4Navigator *myNav = G4TransportationManager:: |
---|
109 | GetTransportationManager()-> GetNavigatorForTracking(); |
---|
110 | myNav->SetWorldVolume(pTopNode); |
---|
111 | |
---|
112 | G4double momentum = 0.05*proton_mass_c2; |
---|
113 | G4double kineticEnergy = momentum*momentum / |
---|
114 | (std::sqrt(momentum*momentum+proton_mass_c2*proton_mass_c2)+proton_mass_c2); |
---|
115 | G4double velocity = momentum / (proton_mass_c2+kineticEnergy); |
---|
116 | G4double labTof= 10.*ns; |
---|
117 | G4double properTof= 0.1*ns; |
---|
118 | |
---|
119 | /* Field Properties */ |
---|
120 | |
---|
121 | G4Mag_UsualEqRhs *fEquation = new G4Mag_UsualEqRhs(&magField); |
---|
122 | |
---|
123 | /* Choose your stepper here */ |
---|
124 | /* G4ClassicalRK4 is the default one */ |
---|
125 | G4MagIntegratorStepper* pStepper = new G4ClassicalRK4( fEquation ); |
---|
126 | |
---|
127 | /* |
---|
128 | pStepper = new G4ExplicitEuler( fEquation ); |
---|
129 | pStepper = new G4ImplicitEuler( fEquation ); |
---|
130 | pStepper = new G4SimpleRunge( fEquation ); |
---|
131 | pStepper = new G4SimpleHeum( fEquation ); |
---|
132 | pStepper = new G4ClassicalRK4( fEquation ); |
---|
133 | pStepper = new G4HelixExplicitEuler( fEquation ); |
---|
134 | pStepper = new G4HelixImplicitEuler( fEquation ); |
---|
135 | pStepper = new G4HelixSimpleRunge( fEquation ); |
---|
136 | pStepper = new G4RKG3_Stepper( fEquation ); |
---|
137 | */ |
---|
138 | |
---|
139 | G4FieldManager* pFieldMgr = G4TransportationManager:: |
---|
140 | GetTransportationManager()->GetFieldManager(); |
---|
141 | pFieldMgr->SetDetectorField( &magField ); |
---|
142 | |
---|
143 | G4ChordFinder* pChordFinder = new G4ChordFinder( &magField,DeltaChord,pStepper); |
---|
144 | pFieldMgr->SetChordFinder( pChordFinder ); |
---|
145 | |
---|
146 | G4PropagatorInField *pMagFieldPropagator= G4TransportationManager:: |
---|
147 | GetTransportationManager()-> GetPropagatorInField (); |
---|
148 | |
---|
149 | pChordFinder->SetChargeMomentumMass(1., // charge in e+ units |
---|
150 | momentum, // Momentum in Mev/c ? |
---|
151 | proton_mass_c2 ); |
---|
152 | G4Timer timer; |
---|
153 | timer.Start(); |
---|
154 | |
---|
155 | for (G4int i=numShoot;i>0;i--) |
---|
156 | { |
---|
157 | G4VPhysicalVolume *located; |
---|
158 | G4ThreeVector Vec = pVec ; |
---|
159 | G4ThreeVector partLoc = pSource ; |
---|
160 | /* |
---|
161 | G4cout << "#Loop " << i << G4endl ; |
---|
162 | G4cout << "Loc = " << partLoc << " Vec = " << Vec << G4endl << G4endl ; |
---|
163 | */ |
---|
164 | momentum = (0.5+i*0.1) * proton_mass_c2; |
---|
165 | kineticEnergy = momentum*momentum / |
---|
166 | (std::sqrt(momentum*momentum+proton_mass_c2*proton_mass_c2)+proton_mass_c2); |
---|
167 | velocity = momentum / (proton_mass_c2+kineticEnergy); |
---|
168 | |
---|
169 | pFieldMgr->GetChordFinder() |
---|
170 | ->SetChargeMomentumMass(1, // charge in e+ units |
---|
171 | momentum, // Momentum in Mev/c |
---|
172 | proton_mass_c2); // Mass |
---|
173 | |
---|
174 | located=myNav->LocateGlobalPointAndSetup(partLoc); |
---|
175 | while (located) |
---|
176 | { |
---|
177 | G4double physStep= kInfinity; // 2.5*mm ; |
---|
178 | G4double safety = 1.0*m; |
---|
179 | G4double Step = 0.0*m; |
---|
180 | /* |
---|
181 | G4cout << "Loc = " << partLoc << " Vec = " << Vec << G4endl ; |
---|
182 | G4cout << "Safety = " << safety << G4endl ; |
---|
183 | */ |
---|
184 | |
---|
185 | G4FieldTrack initTrack(partLoc,pVec,0.,kineticEnergy, |
---|
186 | proton_mass_c2,velocity,labTof,properTof,0); |
---|
187 | Step=pMagFieldPropagator->ComputeStep(initTrack,physStep,safety); |
---|
188 | |
---|
189 | myNav->SetGeometricallyLimitedStep(); |
---|
190 | |
---|
191 | partLoc = pMagFieldPropagator->EndPosition(); |
---|
192 | Vec = pMagFieldPropagator->EndMomentumDir(); |
---|
193 | |
---|
194 | located=myNav->LocateGlobalPointAndSetup(partLoc); |
---|
195 | }; |
---|
196 | } |
---|
197 | timer.Stop(); |
---|
198 | // G4cout << "Shots = " << numShoot << " " << timer << G4endl; |
---|
199 | } |
---|
200 | |
---|
201 | |
---|
202 | void ShootVerbose(G4VPhysicalVolume *pTopNode, |
---|
203 | const G4ThreeVector& pSource, |
---|
204 | const G4ThreeVector& pVec) |
---|
205 | { |
---|
206 | const G4double physStep=kInfinity; |
---|
207 | G4double safety,Step; |
---|
208 | G4Navigator myNav; |
---|
209 | G4ThreeVector partLoc; |
---|
210 | G4VPhysicalVolume *located=0; |
---|
211 | |
---|
212 | myNav.SetWorldVolume(pTopNode); |
---|
213 | |
---|
214 | partLoc=pSource; |
---|
215 | located=myNav.LocateGlobalPointAndSetup(partLoc); |
---|
216 | while (located) |
---|
217 | { |
---|
218 | Step=myNav.ComputeStep(partLoc,pVec,physStep,safety); |
---|
219 | G4cout << "Physical Location=" << located->GetName() |
---|
220 | << " #" << located->GetCopyNo() << G4endl |
---|
221 | << " Step=" << Step << " Safety=" << safety |
---|
222 | << " ---->" << G4endl; |
---|
223 | |
---|
224 | partLoc+=Step*pVec; |
---|
225 | myNav.SetGeometricallyLimitedStep(); |
---|
226 | located=myNav.LocateGlobalPointAndSetup(partLoc); |
---|
227 | }; |
---|
228 | } |
---|
229 | |
---|
230 | #endif |
---|
231 | |
---|