source: trunk/source/processes/electromagnetic/lowenergy/include/G4hLowEnergyLoss.hh@ 1141

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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 *
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12// * institutes,nor the agencies providing financial support for this *
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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: G4hLowEnergyLoss.hh,v 1.17 2006/06/29 19:37:58 gunter Exp $
28// GEANT4 tag $Name: geant4-09-03-beta-cand-00 $
29//
30// $Id:
31// ------------------------------------------------------------
32// GEANT 4 class header file
33//
34// History: first implementation, based on object model of
35// 2nd December 1995, G.Cosmo
36// ---------- G4hEnergyLoss physics process -----------
37// by Laszlo Urban, 30 May 1997
38//
39// ************************************************************
40// It is the first implementation of the NEW UNIFIED ENERGY LOSS PROCESS.
41// It calculates the continuous energy loss for charged hadrons.
42// Processes giving contribution to the continuous loss :
43// ionisation (= cont.ion.loss + delta ray production)
44// can be added more easily ..........
45// This class creates static proton/antiproton dE/dx and range tables ,
46// which tables can be used by other processes.
47// The energy loss for other charged hadrons is calculated from the p/pbar
48// tables with scaled kinetic energy.
49//
50// 7/10/98 L.Urban some bugs fixed + some cleanup
51// 22/10/98 L.Urban cleanup
52// 02/02/99 L.Urban several bugs fixed
53// 31/03/00 V.Ivanchenko rename to lowenergy as G4hLowEnergyLoss.hh
54// 09/08/00 V.Ivanchenko remove GetContinuousStepLimit and IsApplicable
55// 23/11/01 V.Ivanchenko Move static member-functions from header to source
56// 22/01/03 V.Ivanchenko Cuts per region
57// 18/04/03 V.Ivanchenko Make dRoverRange protected
58//
59// Class description:
60// Class for Low Energy electromagnetic energy loss of hadrons
61// Further documentation available from http://www.ge.infn.it/geant4/lowE
62
63// ****************************************************************************
64
65#ifndef G4hLowEnergyLoss_h
66#define G4hLowEnergyLoss_h 1
67
68#include "G4ios.hh"
69#include "globals.hh"
70#include "Randomize.hh"
71#include "G4VContinuousDiscreteProcess.hh"
72#include "G4Material.hh"
73#include "G4Element.hh"
74#include "G4Proton.hh"
75#include "G4AntiProton.hh"
76#include "G4Electron.hh"
77#include "G4VParticleChange.hh"
78#include "G4Track.hh"
79#include "G4Step.hh"
80#include "G4PhysicsLogVector.hh"
81#include "G4PhysicsLinearVector.hh"
82
83class G4EnergyLossMessenger;
84
85class G4hLowEnergyLoss : public G4VContinuousDiscreteProcess
86
87{
88 public:
89
90 G4hLowEnergyLoss(const G4String& );
91
92 ~G4hLowEnergyLoss();
93
94 virtual G4double GetMeanFreePath(
95 const G4Track& track,
96 G4double previousStepSize,
97 enum G4ForceCondition* condition
98 ) = 0 ;
99
100 virtual G4VParticleChange* PostStepDoIt(const G4Track& track,
101 const G4Step& Step) = 0 ;
102
103
104 protected:
105
106 G4bool CutsWhereModified();
107
108 private:
109
110 // hide assignment operator
111
112 G4hLowEnergyLoss(G4hLowEnergyLoss &);
113 G4hLowEnergyLoss & operator=(const G4hLowEnergyLoss &right);
114
115
116// =====================================================================
117
118 public:
119
120 private:
121
122 // variables for the integration routines
123 static G4double Mass,taulow,tauhigh,ltaulow,ltauhigh;
124
125 protected:
126// G4Material *lastMaterial ;
127 const G4double MaxExcitationNumber ;
128 const G4double probLimFluct ;
129 const long nmaxDirectFluct,nmaxCont1,nmaxCont2 ;
130
131// ====================================================================
132// static part of the class
133
134 public:
135
136 // get the number of processes contributing to the cont.energy loss
137 static G4int GetNumberOfProcesses();
138
139 // set the number of processes contributing to the cont.energy loss
140 static void SetNumberOfProcesses(G4int number);
141
142 // Increment the number of processes contributing to the cont.energy loss
143 static void PlusNumberOfProcesses();
144
145 // decrement the number of processes contributing to the cont.energy loss
146 static void MinusNumberOfProcesses();
147
148 static void SetdRoverRange(G4double value);
149 static void SetRndmStep (G4bool value);
150 static void SetEnlossFluc (G4bool value);
151 static void SetStepFunction (G4double c1, G4double c2);
152
153 protected:
154
155 static void BuildDEDXTable(const G4ParticleDefinition& aParticleType);
156
157 private:
158
159 static void BuildRangeTable(const G4ParticleDefinition& aParticleType);
160
161 static void BuildInverseRangeTable(
162 const G4ParticleDefinition& aParticleType);
163
164 static void BuildTimeTables(const G4ParticleDefinition& aParticleType);
165
166 static void BuildLabTimeVector(G4int materialIndex,
167 G4PhysicsLogVector* rangeVector);
168
169 static void BuildProperTimeVector(G4int materialIndex,
170 G4PhysicsLogVector* rangeVector);
171
172 static void InvertRangeVector(G4int materialIndex,
173 G4PhysicsLogVector* rangeVector);
174
175 static void BuildRangeVector(G4int materialIndex,
176 G4PhysicsLogVector* rangeVector);
177
178 static G4double LabTimeIntLog(G4PhysicsVector* physicsVector
179 ,G4int nbin);
180
181 static G4double ProperTimeIntLog(G4PhysicsVector* physicsVector,
182 G4int nbin);
183
184 static G4double RangeIntLin(G4PhysicsVector* physicsVector
185 ,G4int nbin);
186
187 static G4double RangeIntLog(G4PhysicsVector* physicsVector
188 ,G4int nbin);
189
190 static void BuildRangeCoeffATable(
191 const G4ParticleDefinition& aParticleType);
192 static void BuildRangeCoeffBTable(
193 const G4ParticleDefinition& aParticleType);
194 static void BuildRangeCoeffCTable(
195 const G4ParticleDefinition& aParticleType);
196
197// ====================================================================
198
199 public:
200
201 protected:
202
203 static G4PhysicsTable* theDEDXpTable ;
204 static G4PhysicsTable* theDEDXpbarTable ;
205 static G4PhysicsTable* theRangepTable ;
206 static G4PhysicsTable* theRangepbarTable ;
207
208 //inverse of the range tables
209 static G4PhysicsTable* theInverseRangepTable ;
210 static G4PhysicsTable* theInverseRangepbarTable ;
211
212 //lab and proper time tables
213 static G4PhysicsTable* theLabTimepTable ;
214 static G4PhysicsTable* theLabTimepbarTable ;
215
216 static G4PhysicsTable* theProperTimepTable ;
217 static G4PhysicsTable* theProperTimepbarTable ;
218
219 // processes inherited from G4hLowEnergyLoss
220 // register themselves in the static array Recorder
221 static G4PhysicsTable** RecorderOfpProcess;
222 static G4PhysicsTable** RecorderOfpbarProcess;
223 static G4int CounterOfpProcess ;
224 static G4int CounterOfpbarProcess ;
225
226 // particle mass
227 static G4double ParticleMass ;
228
229 // cut in range
230 static G4double ptableElectronCutInRange;
231 static G4double pbartableElectronCutInRange;
232
233 static G4double Charge ;
234
235
236 static G4double LowestKineticEnergy;
237 static G4double HighestKineticEnergy;
238 static G4int TotBin; // number of bins in table,
239 // calculated in BuildPhysicsTable
240
241 static G4double RTable,LOGRTable; // LOGRTable=std::log(HighestKineticEnergy
242 // /LowestKineticEnergy)/TotBin
243 // RTable = std::exp(LOGRTable)
244 private:
245
246 static G4PhysicsTable* theDEDXTable;
247
248 static G4PhysicsTable* theRangeTable;
249 static G4PhysicsTable* theInverseRangeTable;
250
251 static G4PhysicsTable* theLabTimeTable;
252 static G4PhysicsTable* theProperTimeTable;
253
254 static G4PhysicsTable** RecorderOfProcess;
255 static G4int CounterOfProcess;
256
257 static G4PhysicsTable* thepRangeCoeffATable;
258 static G4PhysicsTable* thepRangeCoeffBTable;
259 static G4PhysicsTable* thepRangeCoeffCTable;
260 static G4PhysicsTable* thepbarRangeCoeffATable;
261 static G4PhysicsTable* thepbarRangeCoeffBTable;
262 static G4PhysicsTable* thepbarRangeCoeffCTable;
263
264 static G4PhysicsTable* theRangeCoeffATable;
265 static G4PhysicsTable* theRangeCoeffBTable;
266 static G4PhysicsTable* theRangeCoeffCTable;
267 static G4int NumberOfProcesses ;
268
269 protected:
270
271 G4PhysicsTable* theLossTable ;
272
273 G4double linLossLimit ;
274
275 G4double MinKineticEnergy ;
276
277 static G4double dRoverRange ; // maximum allowed deltarange/range
278 // in one step
279 static G4double finalRange ; // last step before stop
280 static G4double c1lim,c2lim,c3lim ; // coeffs for computing steplimit
281
282 static G4bool rndmStepFlag ;
283 static G4bool EnlossFlucFlag ;
284
285};
286
287#endif
288
289
290
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