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Geant4/parameterisations/gflash/src/GFlashHomoShowerParameterisation.cc

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Differences between /parameterisations/gflash/src/GFlashHomoShowerParameterisation.cc (Version 11.3.0) and /parameterisations/gflash/src/GFlashHomoShowerParameterisation.cc (Version 9.1.p1)


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                                                   >>  26 // $Id: GFlashHomoShowerParameterisation.cc,v 1.5 2006/06/29 19:14:14 gunter Exp $
                                                   >>  27 // GEANT4 tag $Name: geant4-09-01-patch-01 $
 26 //                                                 28 //
 27 //                                                 29 //
 28 // -------------------------------------------     30 // ------------------------------------------------------------
 29 // GEANT 4 class implementation                    31 // GEANT 4 class implementation
 30 //                                                 32 //
 31 //      ------- GFlashHomoShowerParameterisati     33 //      ------- GFlashHomoShowerParameterisation -------
 32 //                                                 34 //
 33 // Authors: E.Barberio & Joanna Weng - 9.11.20     35 // Authors: E.Barberio & Joanna Weng - 9.11.2004
 34 // -------------------------------------------     36 // ------------------------------------------------------------
 35                                                    37 
 36 #include <cmath>                               << 
 37                                                << 
 38 #include "GFlashHomoShowerParameterisation.hh" << 
 39 #include "GVFlashShowerParameterisation.hh"        38 #include "GVFlashShowerParameterisation.hh"
 40 #include "G4PhysicalConstants.hh"              <<  39 #include "GFlashHomoShowerParameterisation.hh"
 41 #include "G4SystemOfUnits.hh"                  <<  40 #include <cmath>
 42 #include "Randomize.hh"                            41 #include "Randomize.hh"
 43 #include "G4ios.hh"                                42 #include "G4ios.hh"
 44 #include "G4Material.hh"                           43 #include "G4Material.hh"
 45 #include "G4MaterialTable.hh"                      44 #include "G4MaterialTable.hh"
 46                                                    45 
 47 GFlashHomoShowerParameterisation::GFlashHomoSh <<  46 GFlashHomoShowerParameterisation::
 48                                                <<  47 GFlashHomoShowerParameterisation(G4Material * aMat,
 49   : GVFlashShowerParameterisation(),           <<  48                                  GVFlashHomoShowerTuning * aPar)
 50     ConstantResolution(0.),                    <<  49   : GVFlashShowerParameterisation()
 51     NoiseResolution(0.),                       <<  50 {  
 52     SamplingResolution(0.),                    <<  51   if(!aPar) { thePar = new GVFlashHomoShowerTuning; }
 53     AveLogAlphah(0.),                          <<  52   else      { thePar = aPar; }
 54     AveLogTmaxh(0.),                           << 
 55     SigmaLogAlphah(0.),                        << 
 56     SigmaLogTmaxh(0.),                         << 
 57     Rhoh(0.),                                  << 
 58     Alphah(0.),                                << 
 59     Tmaxh(0.),                                 << 
 60     Betah(0.)                                  << 
 61                                                << 
 62 {                                              << 
 63   if (!aPar) {                                 << 
 64     thePar = new GVFlashHomoShowerTuning;      << 
 65   }                                            << 
 66   else {                                       << 
 67     thePar = aPar;                             << 
 68   }                                            << 
 69                                                    53 
 70   SetMaterial(aMat);                               54   SetMaterial(aMat);
 71   PrintMaterial(aMat);                             55   PrintMaterial(aMat);
 72                                                    56 
 73   /*******************************************     57   /********************************************/
 74   /* Homo Calorimeter                              58   /* Homo Calorimeter                         */
 75   /******************************************* <<  59   /********************************************/ 
 76   // Longitudinal Coefficients for a homogenio     60   // Longitudinal Coefficients for a homogenious calo
 77   // shower max                                    61   // shower max
 78   //                                               62   //
 79   ParAveT1 = thePar->ParAveT1();  // ln (ln y  <<  63   ParAveT1    = thePar->ParAveT1();   // ln (ln y -0.812)  
 80   ParAveA1 = thePar->ParAveA1();  // ln a (0.8 <<  64   ParAveA1    = thePar->ParAveA1();   // ln a (0.81 + (0.458 + 2.26/Z)ln y)
 81   ParAveA2 = thePar->ParAveA2();               <<  65   ParAveA2    = thePar->ParAveA2();
 82   ParAveA3 = thePar->ParAveA3();               <<  66   ParAveA3    = thePar->ParAveA3();
 83                                                    67 
 84   // Variance of shower max                        68   // Variance of shower max
 85   ParSigLogT1 = thePar->ParSigLogT1();  // Sig <<  69   ParSigLogT1 = thePar->ParSigLogT1();     // Sigma T1 (-1.4 + 1.26 ln y)**-1 
 86   ParSigLogT2 = thePar->ParSigLogT2();             70   ParSigLogT2 = thePar->ParSigLogT2();
 87                                                    71 
 88   // variance of 'alpha'                           72   // variance of 'alpha'
 89   //                                               73   //
 90   ParSigLogA1 = thePar->ParSigLogA1();  // Sig <<  74   ParSigLogA1 = thePar->ParSigLogA1();    // Sigma a (-0.58 + 0.86 ln y)**-1 
 91   ParSigLogA2 = thePar->ParSigLogA2();             75   ParSigLogA2 = thePar->ParSigLogA2();
 92                                                    76 
 93   // correlation alpha%T                           77   // correlation alpha%T
 94   //                                               78   //
 95   ParRho1 = thePar->ParRho1();  // Rho = 0.705 <<  79   ParRho1     = thePar->ParRho1();   // Rho = 0.705 -0.023 ln y 
 96   ParRho2 = thePar->ParRho2();                 <<  80   ParRho2     = thePar->ParRho2();
 97                                                    81 
 98   // Radial Coefficients                           82   // Radial Coefficients
 99   // r_C (tau)= z_1 +z_2 tau                       83   // r_C (tau)= z_1 +z_2 tau
100   // r_t (tau)= k1 (std::exp (k3(tau -k2 ))+st     84   // r_t (tau)= k1 (std::exp (k3(tau -k2 ))+std::exp (k_4 (tau- k_2))))
101   //                                               85   //
102   ParRC1 = thePar->ParRC1();  // z_1 = 0.0251  <<  86   ParRC1 =   thePar->ParRC1();   // z_1 = 0.0251 + 0.00319 ln E
103   ParRC2 = thePar->ParRC2();                   <<  87   ParRC2 =   thePar->ParRC2();
104                                                    88 
105   ParRC3 = thePar->ParRC3();  // z_2 = 0.1162  <<  89   ParRC3 =   thePar->ParRC3();   // z_2 = 0.1162 + - 0.000381 Z
106   ParRC4 = thePar->ParRC4();                   <<  90   ParRC4 =   thePar->ParRC4();
107                                                    91 
108   ParWC1 = thePar->ParWC1();                       92   ParWC1 = thePar->ParWC1();
109   ParWC2 = thePar->ParWC2();                       93   ParWC2 = thePar->ParWC2();
110   ParWC3 = thePar->ParWC3();                       94   ParWC3 = thePar->ParWC3();
111   ParWC4 = thePar->ParWC4();                       95   ParWC4 = thePar->ParWC4();
112   ParWC5 = thePar->ParWC5();                   <<  96   ParWC5 = thePar->ParWC5(); 
113   ParWC6 = thePar->ParWC6();                       97   ParWC6 = thePar->ParWC6();
114                                                    98 
115   ParRT1 = thePar->ParRT1();                       99   ParRT1 = thePar->ParRT1();
116   ParRT2 = thePar->ParRT2();                      100   ParRT2 = thePar->ParRT2();
117   ParRT3 = thePar->ParRT3();                      101   ParRT3 = thePar->ParRT3();
118   ParRT4 = thePar->ParRT4();                   << 102   ParRT4 = thePar->ParRT4(); 
119   ParRT5 = thePar->ParRT5();                      103   ParRT5 = thePar->ParRT5();
120   ParRT6 = thePar->ParRT6();                      104   ParRT6 = thePar->ParRT6();
121                                                   105 
122   // Coeff for fluctueted radial  profiles for    106   // Coeff for fluctueted radial  profiles for a uniform media
123   //                                              107   //
124   ParSpotT1 = thePar->ParSpotT1();  // T_spot  << 108   ParSpotT1   = thePar->ParSpotT1();     // T_spot = T_hom =(0.698 + 0.00212)
125   ParSpotT2 = thePar->ParSpotT2();             << 109   ParSpotT2   = thePar->ParSpotT2();
126                                                   110 
127   ParSpotA1 = thePar->ParSpotA1();  // a_spot= << 111   ParSpotA1   = thePar->ParSpotA1();     // a_spot= a_hom (0.639 + 0.00334)
128   ParSpotA2 = thePar->ParSpotA2();             << 112   ParSpotA2   = thePar->ParSpotA2();  
129                                                   113 
130   ParSpotN1 = thePar->ParSpotN1();  // N_Spot  << 114   ParSpotN1   = thePar->ParSpotN1();     // N_Spot 93 * ln(Z) E ** 0.876   
131   ParSpotN2 = thePar->ParSpotN2();             << 115   ParSpotN2   = thePar->ParSpotN2(); 
132                                                   116 
133   // Inits                                        117   // Inits
134                                                   118 
135   NSpot = 0.00;                                << 119   NSpot         = 0.00;
136   AlphaNSpot = 0.00;                           << 120   AlphaNSpot    = 0.00;
137   TNSpot = 0.00;                               << 121   TNSpot        = 0.00;
138   BetaNSpot = 0.00;                            << 122   BetaNSpot     = 0.00;
139                                                << 123 
140   RadiusCore = 0.00;                           << 124   RadiusCore    = 0.00;
141   WeightCore = 0.00;                           << 125   WeightCore    = 0.00;
142   RadiusTail = 0.00;                           << 126   RadiusTail    = 0.00; 
143                                                   127 
144   G4cout << "/********************************    128   G4cout << "/********************************************/ " << G4endl;
145   G4cout << "  - GFlashHomoShowerParameterisat << 129   G4cout << "  - GFlashHomoShowerParameterisation::Constructor -  " << G4endl;  
146   G4cout << "/********************************    130   G4cout << "/********************************************/ " << G4endl;
147 }                                                 131 }
148                                                   132 
149 void GFlashHomoShowerParameterisation::SetMate << 133 void GFlashHomoShowerParameterisation::SetMaterial(G4Material *mat)
150 {                                                 134 {
151   material = mat;                              << 135   material= mat;
152   Z = GetEffZ(material);                          136   Z = GetEffZ(material);
153   A = GetEffA(material);                          137   A = GetEffA(material);
154   density = material->GetDensity() / (g / cm3) << 138   density = material->GetDensity()/(g/cm3);
155   X0 = material->GetRadlen();                  << 139   X0  = material->GetRadlen(); 
156   // O. I. Dovzhenkko and A. A. Pommanskii     << 140   Ec      = 2.66 * std::pow((X0 * Z / A),1.1); 
157   Ec = 2.66 * std::pow((X0 * Z / A), 1.1);     << 141   G4double Es = 21*MeV;
158   // // Rossi appriximation                    << 142   Rm = X0*Es/Ec;
159   // Ec = 610.0 * MeV / (Z + 1.24);            << 143   // PrintMaterial(); 
160   const G4double Es = 21.2 * MeV;              << 
161   Rm = X0 * Es / Ec;                           << 
162   // PrintMaterial();                          << 
163 }                                                 144 }
164                                                   145 
165 GFlashHomoShowerParameterisation::~GFlashHomoS    146 GFlashHomoShowerParameterisation::~GFlashHomoShowerParameterisation()
166 {                                              << 147 {}
167   delete thePar;                               << 
168 }                                              << 
169                                                   148 
170 void GFlashHomoShowerParameterisation::Generat << 149 void GFlashHomoShowerParameterisation::
                                                   >> 150 GenerateLongitudinalProfile(G4double Energy)
171 {                                                 151 {
172   if (material == 0) {                         << 152   if (material==0) 
173     G4Exception("GFlashHomoShowerParameterisat << 153   {
174                 FatalException, "No material i << 154     G4Exception("GFlashHomoShowerParameterisation::GenerateLongitudinalProfile()",
                                                   >> 155                 "InvalidSetup", FatalException, "No material initialized!");
175   }                                               156   }
176                                                << 157   
177   G4double y = Energy / Ec;                    << 158   G4double y = Energy/Ec;
178   ComputeLongitudinalParameters(y);            << 159   ComputeLongitudinalParameters(y);  
179   GenerateEnergyProfile(y);                       160   GenerateEnergyProfile(y);
180   GenerateNSpotProfile(y);                        161   GenerateNSpotProfile(y);
181 }                                                 162 }
182                                                   163 
183 void GFlashHomoShowerParameterisation::Compute << 164 void
                                                   >> 165 GFlashHomoShowerParameterisation::ComputeLongitudinalParameters(G4double y)
184 {                                                 166 {
185   AveLogTmaxh = std::log(ParAveT1 + std::log(y << 167   AveLogTmaxh  = std::log(ParAveT1 + std::log(y));
186   // ok  <ln T hom>                            << 168     //ok  <ln T hom>
187   AveLogAlphah = std::log(ParAveA1 + (ParAveA2 << 169   AveLogAlphah = std::log(ParAveA1 + (ParAveA2+ParAveA3/Z)*std::log(y));
188   // ok  <ln alpha hom>                        << 170     //ok  <ln alpha hom> 
189                                                << 171 
190   SigmaLogTmaxh = 1.00 / (ParSigLogT1 + ParSig << 172   SigmaLogTmaxh  = 1.00/( ParSigLogT1 + ParSigLogT2*std::log(y)) ;
191   // ok sigma (ln T hom)                       << 173     //ok sigma (ln T hom)
192   SigmaLogAlphah = 1.00 / (ParSigLogA1 + ParSi << 174   SigmaLogAlphah = 1.00/( ParSigLogA1 + ParSigLogA2*std::log(y));
193   // ok sigma (ln alpha hom)                   << 175     //ok sigma (ln alpha hom)
194   Rhoh = ParRho1 + ParRho2 * std::log(y);  //  << 176   Rhoh           = ParRho1+ParRho2*std::log(y);        //ok             
195 }                                                 177 }
196                                                   178 
197 void GFlashHomoShowerParameterisation::Generat    179 void GFlashHomoShowerParameterisation::GenerateEnergyProfile(G4double /* y */)
198 {                                              << 180 { 
199   G4double Correlation1h = std::sqrt((1 + Rhoh << 181   G4double Correlation1h = std::sqrt((1+Rhoh)/2);
200   G4double Correlation2h = std::sqrt((1 - Rhoh << 182   G4double Correlation2h = std::sqrt((1-Rhoh)/2);
201                                                   183 
202   G4double Random1 = G4RandGauss::shoot();        184   G4double Random1 = G4RandGauss::shoot();
203   G4double Random2 = G4RandGauss::shoot();        185   G4double Random2 = G4RandGauss::shoot();
204                                                   186 
205   // Parameters for Enenrgy Profile including  << 187   // Parameters for Enenrgy Profile including correaltion and sigmas 
206                                                << 188  
207   Tmaxh =                                      << 189   Tmaxh  = std::exp( AveLogTmaxh  + SigmaLogTmaxh  *
208     std::exp(AveLogTmaxh + SigmaLogTmaxh * (Co << 190            (Correlation1h*Random1 + Correlation2h*Random2) );
209   Alphah =                                     << 191   Alphah = std::exp( AveLogAlphah + SigmaLogAlphah *
210     std::exp(AveLogAlphah + SigmaLogAlphah * ( << 192            (Correlation1h*Random1 - Correlation2h*Random2) );
211   Betah = (Alphah - 1.00) / Tmaxh;             << 193   Betah  = (Alphah-1.00)/Tmaxh;
212 }                                                 194 }
213                                                   195 
214 void GFlashHomoShowerParameterisation::Generat    196 void GFlashHomoShowerParameterisation::GenerateNSpotProfile(const G4double y)
215 {                                                 197 {
216   TNSpot = Tmaxh * (ParSpotT1 + ParSpotT2 * Z) << 198   TNSpot     = Tmaxh *  (ParSpotT1+ParSpotT2*Z);   // ok
217   AlphaNSpot = Alphah * (ParSpotA1 + ParSpotA2 << 199   AlphaNSpot = Alphah * (ParSpotA1+ParSpotA2*Z);   
218   BetaNSpot = (AlphaNSpot - 1.00) / TNSpot;  / << 200   BetaNSpot  = (AlphaNSpot-1.00)/TNSpot;           // ok 
219   NSpot = ParSpotN1 * std::log(Z) * std::pow(( << 201   NSpot      = ParSpotN1 * std::log(Z)*std::pow((y*Ec)/GeV,ParSpotN2 ); // ok
220 }                                                 202 }
221                                                   203 
222 G4double GFlashHomoShowerParameterisation::       204 G4double GFlashHomoShowerParameterisation::
223 IntegrateEneLongitudinal(G4double Longitudinal    205 IntegrateEneLongitudinal(G4double LongitudinalStep)
224 {                                                 206 {
225   G4double LongitudinalStepInX0 = Longitudinal    207   G4double LongitudinalStepInX0 = LongitudinalStep / X0;
226   G4float x1= Betah*LongitudinalStepInX0;         208   G4float x1= Betah*LongitudinalStepInX0;
227   G4float x2= Alphah;                             209   G4float x2= Alphah;
228   float x3 =  gam(x1,x2);                         210   float x3 =  gam(x1,x2);
229   G4double DEne=x3;                               211   G4double DEne=x3;
230   return DEne;                                    212   return DEne;
231 }                                                 213 }
232                                                   214 
233 G4double GFlashHomoShowerParameterisation::Int << 215 G4double GFlashHomoShowerParameterisation::
                                                   >> 216 IntegrateNspLongitudinal(G4double LongitudinalStep)
234 {                                                 217 {
235   G4double LongitudinalStepInX0 = Longitudinal << 218   G4double LongitudinalStepInX0 = LongitudinalStep / X0; 
236   G4float x1 = BetaNSpot * LongitudinalStepInX << 219   G4float x1 = BetaNSpot*LongitudinalStepInX0;
237   G4float x2 = AlphaNSpot;                        220   G4float x2 = AlphaNSpot;
238   G4float x3 = gam(x1, x2);                    << 221   G4float x3 =  gam(x1,x2);
239   G4double DNsp = x3;                             222   G4double DNsp = x3;
240   return DNsp;                                    223   return DNsp;
241 }                                                 224 }
242                                                   225 
243 G4double GFlashHomoShowerParameterisation::Gen << 226 
244                                                << 227 G4double GFlashHomoShowerParameterisation::
                                                   >> 228 GenerateRadius(G4int ispot, G4double Energy, G4double LongitudinalPosition)
245 {                                                 229 {
246   if (ispot < 1) {                             << 230   if(ispot < 1) 
                                                   >> 231   {
247     // Determine lateral parameters in the mid    232     // Determine lateral parameters in the middle of the step.
248     // They depend on energy & position along     233     // They depend on energy & position along step.
249     //                                            234     //
250     G4double Tau = ComputeTau(LongitudinalPosi    235     G4double Tau = ComputeTau(LongitudinalPosition);
251     ComputeRadialParameters(Energy, Tau);      << 236     ComputeRadialParameters(Energy,Tau);  
252   }                                               237   }
253                                                   238 
254   G4double Radius;                                239   G4double Radius;
255   G4double Random1 = G4UniformRand();             240   G4double Random1 = G4UniformRand();
256   G4double Random2 = G4UniformRand();          << 241   G4double Random2 = G4UniformRand(); 
257                                                   242 
258   if (Random1 < WeightCore)  // WeightCore = p << 243   if(Random1  <WeightCore) //WeightCore = p < w_i  
259   {                                               244   {
260     Radius = Rm * RadiusCore * std::sqrt(Rando << 245     Radius = Rm * RadiusCore * std::sqrt( Random2/(1. - Random2) );
261   }                                               246   }
262   else {                                       << 247   else
263     Radius = Rm * RadiusTail * std::sqrt(Rando << 248   {
264   }                                            << 249     Radius = Rm * RadiusTail * std::sqrt( Random2/(1. - Random2) );
265   Radius = std::min(Radius, DBL_MAX);          << 250   }   
                                                   >> 251   Radius =  std::min(Radius,DBL_MAX);
266   return Radius;                                  252   return Radius;
267 }                                                 253 }
268                                                   254 
269 G4double GFlashHomoShowerParameterisation::Com << 255 G4double GFlashHomoShowerParameterisation::
                                                   >> 256 ComputeTau(G4double LongitudinalPosition)
270 {                                                 257 {
271   G4double tau = LongitudinalPosition / Tmaxh  << 258   G4double tau = LongitudinalPosition / Tmaxh / X0     //<t> = T* a /(a - 1) 
272                  * (Alphah - 1.00) / Alphah *  << 259   * (Alphah-1.00) /Alphah * 
273                  / (std::exp(AveLogAlphah) - 1 << 260   std::exp(AveLogAlphah)/(std::exp(AveLogAlphah)-1.);  //ok 
274   return tau;                                     261   return tau;
275 }                                                 262 }
276                                                   263 
277 void GFlashHomoShowerParameterisation::Compute << 264 void GFlashHomoShowerParameterisation::
                                                   >> 265 ComputeRadialParameters(G4double Energy, G4double Tau)
278 {                                                 266 {
279   G4double z1 = ParRC1 + ParRC2 * std::log(Ene << 267   G4double z1 = ParRC1 + ParRC2* std::log(Energy/GeV)  ;       //ok
280   G4double z2 = ParRC3 + ParRC4 * Z;  // ok    << 268   G4double z2 = ParRC3+ParRC4*Z ;                              //ok
281   RadiusCore = z1 + z2 * Tau;  // ok           << 269   RadiusCore   =  z1 + z2 * Tau  ;                             //ok 
282                                                << 270 
283   G4double p1 = ParWC1 + ParWC2 * Z;  // ok    << 271   G4double p1 = ParWC1+ParWC2*Z;                               //ok
284   G4double p2 = ParWC3 + ParWC4 * Z;  // ok    << 272   G4double p2 = ParWC3+ParWC4*Z;                               //ok
285   G4double p3 = ParWC5 + ParWC6 * std::log(Ene << 273   G4double p3 = ParWC5+ParWC6*std::log(Energy/GeV);            //ok
286                                                << 274 
287   WeightCore = p1 * std::exp((p2 - Tau) / p3 - << 275   WeightCore   =  p1 * std::exp( (p2-Tau)/p3 - std::exp( (p2-Tau) /p3) ); //ok
288                                                << 276 
289   G4double k1 = ParRT1 + ParRT2 * Z;  // ok    << 277   G4double k1 = ParRT1+ParRT2*Z;                   // ok
290   G4double k2 = ParRT3;  // ok                 << 278   G4double k2 = ParRT3;                            // ok
291   G4double k3 = ParRT4;  // ok                 << 279   G4double k3 = ParRT4;                            // ok
292   G4double k4 = ParRT5 + ParRT6 * std::log(Ene << 280   G4double k4 = ParRT5+ParRT6* std::log(Energy/GeV);    // ok
293                                                   281 
294   RadiusTail = k1 * (std::exp(k3 * (Tau - k2)) << 282   RadiusTail   = k1*(std::exp(k3*(Tau-k2))  +
                                                   >> 283   std::exp(k4*(Tau-k2)) );            //ok
295 }                                                 284 }
296                                                   285 
297 G4double GFlashHomoShowerParameterisation::       286 G4double GFlashHomoShowerParameterisation::
298 GenerateExponential(const G4double /* Energy *    287 GenerateExponential(const G4double /* Energy */ )
299 {                                                 288 {
300   G4double ParExp1 =  9./7.*X0;                   289   G4double ParExp1 =  9./7.*X0;
301   G4double random  = -ParExp1*G4RandExponentia << 290   G4double random  = -ParExp1*CLHEP::RandExponential::shoot() ;
302   return random;                                  291   return random;
303 }                                                 292 }
304                                                   293