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G4PAIxSection.hh
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27 // $Id$
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29 //
30 // G4PAIxSection.hh -- header file
31 //
32 // GEANT 4 class header file --- Copyright CERN 1995
33 // CERB Geneva Switzerland
34 //
35 // for information related to this code, please, contact
36 // CERN, CN Division, ASD Group
37 //
38 // Preparation of ionizing collision cross section according to Photo Absorption
39 // Ionization (PAI) model for simulation of ionization energy losses in very thin
40 // absorbers. Author: Vladimir.Grichine@cern.ch
41 //
42 // History:
43 //
44 // 28.10.11, V. Ivanchenko: Migration of exceptions to the new design
45 // 19.10.03, V. Grichine: Integral dEdx was added for G4PAIModel class
46 // 13.05.03, V. Grichine: Numerical instability was fixed in SumOverInterval/Border
47 // functions
48 // 10.02.02, V. Grichine: New functions and arrays/gets for Cerenkov and
49 // plasmon collisions dN/dx
50 // 27.10.99, V. Grichine: Bug fixed in constructors, 3rd constructor and
51 // GetStepEnergyLoss(step) were added, fDelta = 0.005
52 // 30.11.97, V. Grichine: 2nd version
53 // 11.06.97, V. Grichine: 1st version
54 
55 #ifndef G4PAIXSECTION_HH
56 #define G4PAIXSECTION_HH
57 
58 #include "G4ios.hh"
59 #include "globals.hh"
60 #include "Randomize.hh"
61 
62 #include"G4SandiaTable.hh"
63 
64 class G4MaterialCutsCouple;
65 class G4Sandiatable;
66 
67 
68 class G4PAIxSection
69 {
70 public:
71  // Constructors
72  G4PAIxSection( G4MaterialCutsCouple* matCC);
73 
74  G4PAIxSection( G4int materialIndex,
75  G4double maxEnergyTransfer );
76 
77  G4PAIxSection( G4int materialIndex, // for proton loss table
78  G4double maxEnergyTransfer,
79  G4double betaGammaSq ,
80  G4double** photoAbsCof, G4int intNumber );
81 
82  G4PAIxSection( G4int materialIndex, // test constructor
83  G4double maxEnergyTransfer,
84  G4double betaGammaSq );
85 
86  // G4PAIxSection(const G4PAIxSection& right);
87 
88  // Destructor
89 
90  ~G4PAIxSection();
91 
92  // Operators
93  // G4PAIxSection& operator=(const G4PAIxSection& right);
94  // G4int operator==(const G4PAIxSection& right)const;
95  // G4int operator!=(const G4PAIxSection& right)const;
96 
97  // Methods
98 
99  // General control functions
100 
101  void InitPAI();
102 
103  void NormShift( G4double betaGammaSq );
104 
105  void SplainPAI( G4double betaGammaSq );
106 
107  // Physical methods
108 
109 
110  G4double RutherfordIntegral( G4int intervalNumber,
111  G4double limitLow,
112  G4double limitHigh );
113 
114  G4double ImPartDielectricConst( G4int intervalNumber,
115  G4double energy );
116 
117  G4double GetPhotonRange( G4double energy );
118  G4double GetElectronRange( G4double energy );
119 
120  G4double RePartDielectricConst(G4double energy);
121 
122  G4double DifPAIxSection( G4int intervalNumber,
123  G4double betaGammaSq );
124 
125  G4double PAIdNdxCerenkov( G4int intervalNumber,
126  G4double betaGammaSq );
127  G4double PAIdNdxMM( G4int intervalNumber,
128  G4double betaGammaSq );
129 
130  G4double PAIdNdxPlasmon( G4int intervalNumber,
131  G4double betaGammaSq );
132 
133  G4double PAIdNdxResonance( G4int intervalNumber,
134  G4double betaGammaSq );
135 
136  void IntegralPAIxSection();
137  void IntegralCerenkov();
138  void IntegralMM();
139  void IntegralPlasmon();
140  void IntegralResonance();
141 
142  G4double SumOverInterval(G4int intervalNumber);
143  G4double SumOverIntervaldEdx(G4int intervalNumber);
144  G4double SumOverInterCerenkov(G4int intervalNumber);
145  G4double SumOverInterMM(G4int intervalNumber);
146  G4double SumOverInterPlasmon(G4int intervalNumber);
147  G4double SumOverInterResonance(G4int intervalNumber);
148 
149  G4double SumOverBorder( G4int intervalNumber,
150  G4double energy );
151  G4double SumOverBorderdEdx( G4int intervalNumber,
152  G4double energy );
153  G4double SumOverBordCerenkov( G4int intervalNumber,
154  G4double energy );
155  G4double SumOverBordMM( G4int intervalNumber,
156  G4double energy );
157  G4double SumOverBordPlasmon( G4int intervalNumber,
158  G4double energy );
159  G4double SumOverBordResonance( G4int intervalNumber,
160  G4double energy );
161 
162  G4double GetStepEnergyLoss( G4double step );
163  G4double GetStepCerenkovLoss( G4double step );
164  G4double GetStepMMLoss( G4double step );
165  G4double GetStepPlasmonLoss( G4double step );
166  G4double GetStepResonanceLoss( G4double step );
167 
168  G4double GetEnergyTransfer();
169  G4double GetCerenkovEnergyTransfer();
170  G4double GetMMEnergyTransfer();
171  G4double GetPlasmonEnergyTransfer();
172  G4double GetResonanceEnergyTransfer();
173  G4double GetRutherfordEnergyTransfer();
174 
175  // Inline access functions
176 
177  G4int GetNumberOfGammas() const { return fNumberOfGammas; }
178 
179  G4int GetSplineSize() const { return fSplineNumber; }
180 
181  G4int GetIntervalNumber() const { return fIntervalNumber; }
182 
183  G4double GetEnergyInterval(G4int i){ return fEnergyInterval[i]; }
184 
185  G4double GetDifPAIxSection(G4int i){ return fDifPAIxSection[i]; }
186  G4double GetPAIdNdxCerenkov(G4int i){ return fdNdxCerenkov[i]; }
187  G4double GetPAIdNdxMM(G4int i){ return fdNdxMM[i]; }
188  G4double GetPAIdNdxPlasmon(G4int i){ return fdNdxPlasmon[i]; }
189  G4double GetPAIdNdxResonance(G4int i){ return fdNdxResonance[i]; }
190 
191  G4double GetMeanEnergyLoss() const {return fIntegralPAIxSection[0]; }
192  G4double GetMeanCerenkovLoss() const {return fIntegralCerenkov[0]; }
193  G4double GetMeanMMLoss() const {return fIntegralMM[0]; }
194  G4double GetMeanPlasmonLoss() const {return fIntegralPlasmon[0]; }
195  G4double GetMeanResonanceLoss() const {return fIntegralResonance[0]; }
196 
197  G4double GetNormalizationCof() const { return fNormalizationCof; }
198 
199  inline G4double GetPAItable(G4int i,G4int j) const;
200 
201  inline G4double GetLorentzFactor(G4int i) const;
202 
203  inline G4double GetSplineEnergy(G4int i) const;
204 
205  inline G4double GetIntegralPAIxSection(G4int i) const;
206  inline G4double GetIntegralPAIdEdx(G4int i) const;
207  inline G4double GetIntegralCerenkov(G4int i) const;
208  inline G4double GetIntegralMM(G4int i) const;
209  inline G4double GetIntegralPlasmon(G4int i) const;
210  inline G4double GetIntegralResonance(G4int i) const;
211 
212 private :
213 
214  void CallError(G4int i, const G4String& methodName) const;
215 
216  G4PAIxSection & operator=(const G4PAIxSection &right);
217  G4PAIxSection(const G4PAIxSection&);
218 
219 // Local class constants
220 
221 static const G4double fDelta; // energy shift from interval border = 0.001
222 static const G4double fError; // error in lin-log approximation = 0.005
223 
224 static G4int fNumberOfGammas; // = 111;
225 static const G4double fLorentzFactor[112]; // static gamma array
226 
227 static
228 const G4int fRefGammaNumber ; // The number of gamma for creation of spline (15)
229 
230 G4int fIntervalNumber ; // The number of energy intervals
231 G4double fNormalizationCof; // Normalization cof for PhotoAbsorptionXsection
232 
233 // G4double fBetaGammaSq; // (beta*gamma)^2
234 
235  G4int fMaterialIndex; // current material index
236  G4double fDensity; // Current density
237  G4double fElectronDensity; // Current electron (number) density
238  G4int fSplineNumber; // Current size of spline
239 
240 // Arrays of Sandia coefficients
241 
242  G4OrderedTable* fMatSandiaMatrix;
243  G4SandiaTable* fSandia;
244 
245 G4double* fEnergyInterval;
246 G4double* fA1;
247 G4double* fA2;
248 G4double* fA3;
249 G4double* fA4;
250 
251 static
252 const G4int fMaxSplineSize ; // Max size of output splain arrays = 500
253 
254 /* ******************
255 G4double* fSplineEnergy; // energy points of splain
256 G4double* fRePartDielectricConst; // Real part of dielectric const
257 G4double* fImPartDielectricConst; // Imaginary part of dielectric const
258 G4double* fIntegralTerm; // Integral term in PAI cross section
259 G4double* fDifPAIxSection; // Differential PAI cross section
260 G4double* fIntegralPAIxSection; // Integral PAI cross section ?
261 */
262 
263 
264 G4double fSplineEnergy[500]; // energy points of splain
265 G4double fRePartDielectricConst[500]; // Real part of dielectric const
266 G4double fImPartDielectricConst[500]; // Imaginary part of dielectric const
267 G4double fIntegralTerm[500]; // Integral term in PAI cross section
268 G4double fDifPAIxSection[500]; // Differential PAI cross section
269 G4double fdNdxCerenkov[500]; // dNdx of Cerenkov collisions
270 G4double fdNdxMM[500]; // dNdx of MM-Cerenkov collisions
271 G4double fdNdxPlasmon[500]; // dNdx of Plasmon collisions
272 G4double fdNdxResonance[500]; // dNdx of resonance collisions
273 
274 G4double fIntegralPAIxSection[500]; // Integral PAI cross section ?
275 G4double fIntegralPAIdEdx[500]; // Integral PAI dEdx ?
276 G4double fIntegralCerenkov[500]; // Integral Cerenkov N>omega ?
277 G4double fIntegralMM[500]; // Integral MM-Cerenkov N>omega ?
278 G4double fIntegralPlasmon[500]; // Integral Plasmon N>omega ?
279 G4double fIntegralResonance[500]; // Integral resonance N>omega ?
280 
281 G4double fPAItable[500][112]; // Output array
282 
283 };
284 
286 //
287 
288 inline G4double G4PAIxSection::GetPAItable(G4int i, G4int j) const
289 {
290  return fPAItable[i][j];
291 }
292 
293 inline G4double G4PAIxSection::GetLorentzFactor(G4int j) const
294 {
295  return fLorentzFactor[j];
296 }
297 
298 inline G4double G4PAIxSection::GetSplineEnergy(G4int i) const
299 {
300  if(i < 1 || i > fSplineNumber) { CallError(i, "GetSplineEnergy"); }
301  return fSplineEnergy[i];
302 }
303 
304 inline G4double G4PAIxSection::GetIntegralPAIxSection(G4int i) const
305 {
306  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralPAIxSection"); }
307  return fIntegralPAIxSection[i];
308 }
309 
310 inline G4double G4PAIxSection::GetIntegralPAIdEdx(G4int i) const
311 {
312  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralPAIdEdx"); }
313  return fIntegralPAIdEdx[i];
314 }
315 
316 inline G4double G4PAIxSection::GetIntegralCerenkov(G4int i) const
317 {
318  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralCerenkov"); }
319  return fIntegralCerenkov[i];
320 }
321 
322 inline G4double G4PAIxSection::GetIntegralMM(G4int i) const
323 {
324  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralMM"); }
325  return fIntegralMM[i];
326 }
327 
328 inline G4double G4PAIxSection::GetIntegralPlasmon(G4int i) const
329 {
330  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralPlasmon"); }
331  return fIntegralPlasmon[i];
332 }
333 
334 inline G4double G4PAIxSection::GetIntegralResonance(G4int i) const
335 {
336  if(i < 1 || i > fSplineNumber) { CallError(i, "GetIntegralResonance"); }
337  return fIntegralResonance[i];
338 }
339 
340 #endif
341 
342 // ----------------- end of G4PAIxSection header file -------------------
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