source: trunk/environments/g4py/examples/demos/TestEm0/g4lib/RunAction.cc@ 1337

Last change on this file since 1337 was 1337, checked in by garnier, 15 years ago

tag geant4.9.4 beta 1 + modifs locales
File size: 12.4 KB
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[1337]1//
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24// ********************************************************************
25//
26// $Id: RunAction.cc,v 1.1 2007/06/21 15:18:32 jjacquem Exp $
27// GEANT4 tag $Name: geant4-09-04-beta-01 $
28//
29//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
30//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31
32#include "RunAction.hh"
33#include "DetectorConstruction.hh"
34#include "PrimaryGeneratorAction.hh"
35
36#include "G4Run.hh"
37#include "G4ProcessManager.hh"
38#include "G4UnitsTable.hh"
39#include "G4EmCalculator.hh"
40#include "G4Electron.hh"
41
42#include <vector>
43
44//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45
46RunAction::RunAction(DetectorConstruction* det, PrimaryGeneratorAction* kin)
47:detector(det), primary(kin)
48{ }
49
50//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
51
52RunAction::~RunAction()
53{ }
54
55//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56
57void RunAction::BeginOfRunAction(const G4Run*)
58{
59 //set precision for printing
60 G4int prec = G4cout.precision(6);
61
62 // get particle
63 G4ParticleDefinition* particle = primary->GetParticleGun()
64 ->GetParticleDefinition();
65 G4String partName = particle->GetParticleName();
66 G4double charge = particle->GetPDGCharge();
67 G4double energy = primary->GetParticleGun()->GetParticleEnergy();
68
69 // get material
70 G4Material* material = detector->GetMaterial();
71 G4String matName = material->GetName();
72 G4double density = material->GetDensity();
73 G4double radl = material->GetRadlen();
74
75 G4cout << "\n " << partName << " ("
76 << G4BestUnit(energy,"Energy") << ") in "
77 << material->GetName() << " (density: "
78 << G4BestUnit(density,"Volumic Mass") << "; radiation length: "
79 << G4BestUnit(radl, "Length") << ")" << G4endl;
80
81 // get cuts
82 GetCuts();
83 if (charge != 0.) {
84 G4cout << "\n Range cuts : \t gamma "
85 << std::setw(8) << G4BestUnit(rangeCut[0],"Length")
86 << "\t e- " << std::setw(8) << G4BestUnit(rangeCut[1],"Length");
87 G4cout << "\n Energy cuts : \t gamma "
88 << std::setw(8) << G4BestUnit(energyCut[0],"Energy")
89 << "\t e- " << std::setw(8) << G4BestUnit(energyCut[1],"Energy")
90 << G4endl;
91 }
92
93 // get processList and extract EM processes (but not MultipleScattering)
94 G4ProcessVector* plist = particle->GetProcessManager()->GetProcessList();
95 G4String procName;
96 G4double cut;
97 std::vector<G4String> emName;
98 std::vector<G4double> enerCut;
99 size_t length = plist->size();
100 for (size_t j=0; j<length; j++) {
101 procName = (*plist)[j]->GetProcessName();
102 cut = energyCut[1];
103 if ((procName == "eBrem")||(procName == "muBrems")) cut = energyCut[0];
104 if (((*plist)[j]->GetProcessType() == fElectromagnetic) &&
105 (procName != "msc")) {
106 emName.push_back(procName);
107 enerCut.push_back(cut);
108 }
109 }
110
111 // print list of processes
112 G4cout << "\n processes : ";
113 for (size_t j=0; j<emName.size();j++)
114 G4cout << "\t" << std::setw(13) << emName[j] << "\t";
115 G4cout << "\t" << std::setw(13) <<"total";
116
117 //instanciate EmCalculator
118 G4EmCalculator emCal;
119 // emCal.SetVerbose(2);
120
121 //compute cross section per atom (only for single material)
122 if (material->GetNumberOfElements() == 1) {
123 G4double Z = material->GetZ();
124 G4double A = material->GetA();
125
126 std::vector<G4double> sigma0;
127 G4double sig, sigtot = 0.;
128
129 for (size_t j=0; j<emName.size();j++) {
130 sig = emCal.ComputeCrossSectionPerAtom
131 (energy,particle,emName[j],Z,A,enerCut[j]);
132 sigtot += sig;
133 sigma0.push_back(sig);
134 }
135 sigma0.push_back(sigtot);
136
137 G4cout << "\n \n cross section per atom : ";
138 for (size_t j=0; j<sigma0.size();j++) {
139 G4cout << "\t" << std::setw(13) << G4BestUnit(sigma0[j], "Surface");
140 }
141 G4cout << G4endl;
142 }
143
144 //get cross section per volume
145 std::vector<G4double> sigma1;
146 std::vector<G4double> sigma2;
147 G4double Sig, Sigtot = 0.;
148
149 for (size_t j=0; j<emName.size();j++) {
150 Sig = emCal.GetCrossSectionPerVolume(energy,particle,emName[j],material);
151 if (Sig == 0.) Sig = emCal.ComputeCrossSectionPerVolume
152 (energy,particle,emName[j],material,enerCut[j]);
153 Sigtot += Sig;
154 sigma1.push_back(Sig);
155 sigma2.push_back(Sig/density);
156 }
157 sigma1.push_back(Sigtot);
158 sigma2.push_back(Sigtot/density);
159
160 //print cross sections
161 G4cout << "\n \n cross section per volume : ";
162 for (size_t j=0; j<sigma1.size();j++) {
163 G4cout << "\t" << std::setw(13) << sigma1[j]*cm << " cm^-1";
164 }
165
166 G4cout << "\n cross section per mass : ";
167 for (size_t j=0; j<sigma2.size();j++) {
168 G4cout << "\t" << std::setw(13) << G4BestUnit(sigma2[j], "Surface/Mass");
169 }
170
171 //print mean free path
172
173 G4double lambda;
174
175 G4cout << "\n \n mean free path : ";
176 for (size_t j=0; j<sigma1.size();j++) {
177 lambda = DBL_MAX;
178 if (sigma1[j] > 0.) lambda = 1/sigma1[j];
179 G4cout << "\t" << std::setw(13) << G4BestUnit( lambda, "Length");
180 }
181
182 //mean free path (g/cm2)
183 G4cout << "\n (g/cm2) : ";
184 for (size_t j=0; j<sigma2.size();j++) {
185 lambda = DBL_MAX;
186 if (sigma2[j] > 0.) lambda = 1/sigma2[j];
187 G4cout << "\t" << std::setw(13) << G4BestUnit( lambda, "Mass/Surface");
188 }
189 G4cout << G4endl;
190
191 if (charge == 0.) {
192 G4cout.precision(prec);
193 G4cout << "\n-------------------------------------------------------------\n"
194 << G4endl;
195 return;
196 }
197
198 //get stopping power
199 std::vector<G4double> dedx1;
200 std::vector<G4double> dedx2;
201 G4double dedx, dedxtot = 0.;
202
203 for (size_t j=0; j<emName.size();j++) {
204 dedx = emCal.ComputeDEDX(energy,particle,emName[j],material,enerCut[j]);
205 dedx1.push_back(dedx);
206 dedx2.push_back(dedx/density);
207 }
208 dedxtot = emCal.GetDEDX(energy,particle,material);
209 dedx1.push_back(dedxtot);
210 dedx2.push_back(dedxtot/density);
211
212 //print stopping power
213 G4cout << "\n \n restricted dE/dx : ";
214 for (size_t j=0; j<sigma1.size();j++) {
215 G4cout << "\t" << std::setw(13) << G4BestUnit(dedx1[j],"Energy/Length");
216 }
217
218 G4cout << "\n (MeV/g/cm2) : ";
219 for (size_t j=0; j<sigma2.size();j++) {
220 G4cout << "\t" << std::setw(13) << G4BestUnit(dedx2[j],"Energy*Surface/Mass");
221 }
222
223 //get range from restricted dedx
224 G4double range1 = emCal.GetRangeFromRestricteDEDX(energy,particle,material);
225 G4double range2 = range1*density;
226
227 //get range from full dedx
228 G4double Range1 = emCal.GetCSDARange(energy,particle,material);
229 G4double Range2 = Range1*density;
230
231 //print range
232 G4cout << "\n \n range from restrict dE/dx: "
233 << "\t" << std::setw(8) << G4BestUnit(range1,"Length")
234 << " (" << std::setw(8) << G4BestUnit(range2,"Mass/Surface") << ")";
235
236 G4cout << "\n range from full dE/dx : "
237 << "\t" << std::setw(8) << G4BestUnit(Range1,"Length")
238 << " (" << std::setw(8) << G4BestUnit(Range2,"Mass/Surface") << ")";
239
240 //get transport mean free path (for multiple scattering)
241 G4double MSmfp1 = emCal.GetMeanFreePath(energy,particle,"msc",material);
242 G4double MSmfp2 = MSmfp1*density;
243
244 //print transport mean free path
245 G4cout << "\n \n transport mean free path : "
246 << "\t" << std::setw(8) << G4BestUnit(MSmfp1,"Length")
247 << " (" << std::setw(8) << G4BestUnit(MSmfp2,"Mass/Surface") << ")";
248
249 if (particle == G4Electron::Electron()) CriticalEnergy();
250
251 G4cout << "\n-------------------------------------------------------------\n";
252 G4cout << G4endl;
253
254 // reset default precision
255 G4cout.precision(prec);
256}
257
258//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
259
260void RunAction::EndOfRunAction(const G4Run* )
261{ }
262
263//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
264
265#include "G4ProductionCutsTable.hh"
266
267//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
268
269void RunAction::GetCuts()
270{
271 G4ProductionCutsTable* theCoupleTable =
272 G4ProductionCutsTable::GetProductionCutsTable();
273
274 size_t numOfCouples = theCoupleTable->GetTableSize();
275 const G4MaterialCutsCouple* couple = 0;
276 G4int index = 0;
277 for (size_t i=0; i<numOfCouples; i++) {
278 couple = theCoupleTable->GetMaterialCutsCouple(i);
279 if (couple->GetMaterial() == detector->GetMaterial()) {index = i; break;}
280 }
281
282 rangeCut[0] =
283 (*(theCoupleTable->GetRangeCutsVector(idxG4GammaCut)))[index];
284 rangeCut[1] =
285 (*(theCoupleTable->GetRangeCutsVector(idxG4ElectronCut)))[index];
286 rangeCut[2] =
287 (*(theCoupleTable->GetRangeCutsVector(idxG4PositronCut)))[index];
288
289 energyCut[0] =
290 (*(theCoupleTable->GetEnergyCutsVector(idxG4GammaCut)))[index];
291 energyCut[1] =
292 (*(theCoupleTable->GetEnergyCutsVector(idxG4ElectronCut)))[index];
293 energyCut[2] =
294 (*(theCoupleTable->GetEnergyCutsVector(idxG4PositronCut)))[index];
295
296}
297
298//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
299
300void RunAction::CriticalEnergy()
301{
302 // compute e- critical energy (Rossi definition) and Moliere radius.
303 // Review of Particle Physics - Eur. Phys. J. C3 (1998) page 147
304 //
305 G4EmCalculator emCal;
306
307 const G4Material* material = detector->GetMaterial();
308 const G4double radl = material->GetRadlen();
309 G4double ekin = 5*MeV;
310 G4double deioni;
311 G4double err = 1., errmax = 0.001;
312 G4int iter = 0 , itermax = 10;
313 while (err > errmax && iter < itermax) {
314 iter++;
315 deioni = radl*
316 emCal.ComputeDEDX(ekin,G4Electron::Electron(),"eIoni",material);
317 err = std::abs(deioni - ekin)/ekin;
318 ekin = deioni;
319 }
320 G4cout << "\n \n critical energy (Rossi) : "
321 << "\t" << std::setw(8) << G4BestUnit(ekin,"Energy");
322
323 //Pdg formula (only for single material)
324 G4double pdga[2] = { 610*MeV, 710*MeV };
325 G4double pdgb[2] = { 1.24, 0.92 };
326 G4double EcPdg = 0.;
327
328 if (material->GetNumberOfElements() == 1) {
329 G4int istat = 0;
330 if (material->GetState() == kStateGas) istat = 1;
331 G4double Zeff = material->GetZ() + pdgb[istat];
332 EcPdg = pdga[istat]/Zeff;
333 G4cout << "\t\t\t (from Pdg formula : "
334 << std::setw(8) << G4BestUnit(EcPdg,"Energy") << ")";
335 }
336
337 const G4double Es = 21.2052*MeV;
338 G4double rMolier1 = Es/ekin, rMolier2 = rMolier1*radl;
339 G4cout << "\n Moliere radius : "
340 << "\t" << std::setw(8) << rMolier1 << " X0 "
341 << "= " << std::setw(8) << G4BestUnit(rMolier2,"Length");
342
343 if (material->GetNumberOfElements() == 1) {
344 G4double rMPdg = radl*Es/EcPdg;
345 G4cout << "\t (from Pdg formula : "
346 << std::setw(8) << G4BestUnit(rMPdg,"Length") << ")";
347 }
348}
349
350//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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