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GFlashShowerModel.cc
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26 // $Id: GFlashShowerModel.cc 69796 2013-05-15 13:26:12Z gcosmo $
27 //
28 //
29 // ------------------------------------------------------------
30 // GEANT 4 class implementation
31 //
32 // ---------------- GFlashShowerModel ----------------
33 //
34 // Authors: E.Barberio & Joanna Weng - 9.11.2004
35 // ------------------------------------------------------------
36 
37 #include "G4Electron.hh"
38 #include "G4Positron.hh"
39 #include "G4NeutrinoE.hh"
40 #include "G4NeutrinoMu.hh"
41 #include "G4NeutrinoTau.hh"
42 #include "G4AntiNeutrinoE.hh"
43 #include "G4AntiNeutrinoMu.hh"
44 #include "G4AntiNeutrinoTau.hh"
45 #include "G4PionZero.hh"
46 #include "G4VProcess.hh"
47 #include "G4ios.hh"
48 #include "G4LogicalVolume.hh"
49 #include "geomdefs.hh"
50 
51 #include "GFlashShowerModel.hh"
52 #include "GFlashHomoShowerParameterisation.hh"
53 #include "GFlashSamplingShowerParameterisation.hh"
54 #include "GFlashEnergySpot.hh"
55 
56 
57 GFlashShowerModel::GFlashShowerModel(G4String modelName,
58  G4Envelope* envelope)
59  : G4VFastSimulationModel(modelName, envelope),
60  PBound(0), Parameterisation(0), HMaker(0)
61 {
62  FlagParamType = 0;
63  FlagParticleContainment = 1;
64  StepInX0 = 0.1;
65  Messenger = new GFlashShowerModelMessenger(this);
66 }
67 
68 GFlashShowerModel::GFlashShowerModel(G4String modelName)
69  : G4VFastSimulationModel(modelName),
70  PBound(0), Parameterisation(0), HMaker(0)
71 {
72  FlagParamType =1;
73  FlagParticleContainment = 1;
74  StepInX0 = 0.1;
75  Messenger = new GFlashShowerModelMessenger(this);
76 }
77 
78 GFlashShowerModel::~GFlashShowerModel()
79 {
80  delete Messenger;
81 }
82 
83 G4bool
84 GFlashShowerModel::IsApplicable(const G4ParticleDefinition& particleType)
85 {
86  return
87  &particleType == G4Electron::ElectronDefinition() ||
88  &particleType == G4Positron::PositronDefinition();
89 }
90 
91 /**********************************************************************/
92 /* Checks whether conditions of fast parameterisation are fullfilled */
93 /**********************************************************************/
94 
95 G4bool GFlashShowerModel::ModelTrigger(const G4FastTrack & fastTrack )
96 
97 {
98  G4bool select = false;
99  if(FlagParamType != 0)
100  {
101  G4double ParticleEnergy = fastTrack.GetPrimaryTrack()->GetKineticEnergy();
102  G4ParticleDefinition &ParticleType =
103  *(fastTrack.GetPrimaryTrack()->GetDefinition());
104  if(ParticleEnergy > PBound->GetMinEneToParametrise(ParticleType) &&
105  ParticleEnergy < PBound->GetMaxEneToParametrise(ParticleType) )
106  {
107  // check conditions depending on particle flavour
108  // performance to be optimized @@@@@@@
109  Parameterisation->GenerateLongitudinalProfile(ParticleEnergy);
110  select = CheckParticleDefAndContainment(fastTrack);
111  if (select) EnergyStop= PBound->GetEneToKill(ParticleType);
112  }
113  }
114 
115  return select;
116 }
117 
118 
119 G4bool
120 GFlashShowerModel::CheckParticleDefAndContainment(const G4FastTrack& fastTrack)
121 {
122  G4bool filter=false;
123  G4ParticleDefinition * ParticleType =
124  fastTrack.GetPrimaryTrack()->GetDefinition();
125 
126  if( ParticleType == G4Electron::ElectronDefinition() ||
127  ParticleType == G4Positron::PositronDefinition() )
128  {
129  filter=true;
130  if(FlagParticleContainment == 1)
131  {
132  filter=CheckContainment(fastTrack);
133  }
134  }
135  return filter;
136 }
137 
138 G4bool GFlashShowerModel::CheckContainment(const G4FastTrack& fastTrack)
139 {
140  G4bool filter=false;
141  // track informations
142  G4ThreeVector DirectionShower=fastTrack.GetPrimaryTrackLocalDirection();
143  G4ThreeVector InitialPositionShower=fastTrack.GetPrimaryTrackLocalPosition();
144 
145  G4ThreeVector OrthoShower, CrossShower;
146  // Returns orthogonal vector
147  OrthoShower = DirectionShower.orthogonal();
148  // Shower in direction perpendicular to OrthoShower and DirectionShower
149  CrossShower = DirectionShower.cross(OrthoShower);
150 
151  G4double R = Parameterisation->GetAveR90();
152  G4double Z = Parameterisation->GetAveT90();
153  G4int CosPhi[4] = {1,0,-1,0};
154  G4int SinPhi[4] = {0,1,0,-1};
155 
156  G4ThreeVector Position;
157  G4int NlateralInside=0;
158  // pointer to solid we're in
159  G4VSolid *SolidCalo = fastTrack.GetEnvelopeSolid();
160  for(int i=0; i<4 ;i++)
161  {
162  // polar coordinates
163  Position = InitialPositionShower +
164  Z*DirectionShower +
165  R*CosPhi[i]*OrthoShower +
166  R*SinPhi[i]*CrossShower ;
167 
168  if(SolidCalo->Inside(Position) != kOutside)
169  NlateralInside++;
170  }
171 
172  // choose to parameterise or flag when all inetc...
173  if(NlateralInside==4) filter=true;
174  // std::cout << " points = " <<NlateralInside << std::endl;
175  return filter;
176 }
177 
178 
179 void
180 GFlashShowerModel::DoIt(const G4FastTrack& fastTrack, G4FastStep& fastStep)
181 {
182  // parametrise electrons
183  if(fastTrack.GetPrimaryTrack()->GetDefinition()
184  == G4Electron::ElectronDefinition() ||
185  fastTrack.GetPrimaryTrack()->GetDefinition()
186  == G4Positron::PositronDefinition() )
187  ElectronDoIt(fastTrack,fastStep);
188 }
189 
190 void
191 GFlashShowerModel::ElectronDoIt(const G4FastTrack& fastTrack,
192  G4FastStep& fastStep)
193 {
194  // std::cout<<"--- ElectronDoit --- "<<std::endl;
195 
196  fastStep.KillPrimaryTrack();
197  fastStep.SetPrimaryTrackPathLength(0.0);
198  fastStep.SetTotalEnergyDeposited(fastTrack.GetPrimaryTrack()->
199  GetKineticEnergy());
200 
201  //-----------------------------
202  // Get track parameters
203  //-----------------------------
204  //E,vect{p} and t,vec(x)
205  G4double Energy = fastTrack.GetPrimaryTrack()->GetKineticEnergy();
206 
207  // axis of the shower, in global reference frame:
208  G4ThreeVector DirectionShower =
209  fastTrack.GetPrimaryTrack()->GetMomentumDirection();
210  G4ThreeVector OrthoShower, CrossShower;
211  OrthoShower = DirectionShower.orthogonal();
212  CrossShower = DirectionShower.cross(OrthoShower);
213 
214  //--------------------------------
216  //--------------------------------
217  Parameterisation->GenerateLongitudinalProfile(Energy);
218  // performance iteration @@@@@@@
219 
221  G4VSolid *SolidCalo = fastTrack.GetEnvelopeSolid();
222  G4ThreeVector pos = fastTrack.GetPrimaryTrackLocalPosition();
223  G4ThreeVector dir = fastTrack.GetPrimaryTrackLocalDirection();
224  G4double Bound = SolidCalo->DistanceToOut(pos,dir);
225 
226  G4double Dz = 0.00;
227  G4double ZEndStep = 0.00;
228 
229  G4double EnergyNow = Energy;
230  G4double EneIntegral = 0.00;
231  G4double LastEneIntegral = 0.00;
232  G4double DEne = 0.00;
233 
234  G4double NspIntegral = 0.00;
235  G4double LastNspIntegral = 0.00;
236  G4double DNsp = 0.00;
237 
238  // starting point of the shower:
239  G4ThreeVector PositionShower = fastTrack.GetPrimaryTrack()->GetPosition();
240  G4ThreeVector NewPositionShower = PositionShower;
241  G4double StepLenght = 0.00;
242 
243  G4int NSpotDeposited =0;
244 
245  //--------------------------
247  //-------------------------
248 
249  do
250  {
251  //determine step size=min(1Xo,next boundary)
252  G4double stepLength = StepInX0*Parameterisation->GetX0();
253  if(Bound < stepLength)
254  {
255  Dz = Bound;
256  Bound = 0.00;
257  }
258  else
259  {
260  Dz = stepLength;
261  Bound = Bound-Dz;
262  }
263  ZEndStep=ZEndStep+Dz;
264 
265  // Determine Energy Release in Step
266  if(EnergyNow > EnergyStop)
267  {
268  LastEneIntegral = EneIntegral;
269  EneIntegral = Parameterisation->IntegrateEneLongitudinal(ZEndStep);
270  DEne = std::min( EnergyNow,
271  (EneIntegral-LastEneIntegral)*Energy);
272  LastNspIntegral = NspIntegral;
273  NspIntegral = Parameterisation->IntegrateNspLongitudinal(ZEndStep);
274  DNsp = std::max(1., std::floor( (NspIntegral-LastNspIntegral)
275  *Parameterisation->GetNspot() ));
276  }
277  // end of the shower
278  else
279  {
280  DEne = EnergyNow;
281  DNsp = std::max(1., std::floor( (1.- NspIntegral)
282  *Parameterisation->GetNspot() ));
283  }
284  EnergyNow = EnergyNow - DEne;
285 
286  // Apply sampling fluctuation - only in sampling calorimeters
287  //
288  GFlashSamplingShowerParameterisation* sp =
289  dynamic_cast<GFlashSamplingShowerParameterisation*>(Parameterisation);
290  if (sp)
291  {
292  G4double DEneSampling = sp->ApplySampling(DEne,Energy);
293  DEne = DEneSampling;
294  }
295 
296  //move particle in the middle of the step
297  StepLenght = StepLenght + Dz/2.00;
298  NewPositionShower = NewPositionShower +
299  StepLenght*DirectionShower;
300  StepLenght = Dz/2.00;
301 
302  //generate spots & hits:
303  for (int i = 0; i < DNsp; i++)
304  {
305  NSpotDeposited++;
306  GFlashEnergySpot Spot;
307 
308  //Spot energy: the same for all spots
309  Spot.SetEnergy( DEne / DNsp );
310  G4double PhiSpot = Parameterisation->GeneratePhi(); // phi of spot
311  G4double RSpot = Parameterisation // radius of spot
312  ->GenerateRadius(i,Energy,ZEndStep-Dz/2.);
313 
314  // check reference-> may be need to introduce rot matrix @@@
315  // Position: equally spaced in z
316 
317  G4ThreeVector SpotPosition = NewPositionShower +
318  Dz/DNsp*DirectionShower*(i+1/2.-DNsp/2.) +
319  RSpot*std::cos(PhiSpot)*OrthoShower +
320  RSpot*std::sin(PhiSpot)*CrossShower;
321  Spot.SetPosition(SpotPosition);
322 
323  //Generate Hits of this spot
324  HMaker->make(&Spot, &fastTrack);
325  }
326  }
327  while(EnergyNow > 0.0 && Bound> 0.0);
328 
329  //---------------
331  //---------------
332 }
333 
334 /*
335 
336 void
337 GFlashShowerModel::GammaDoIt(const G4FastTrack& fastTrack,
338  G4FastStep& fastStep)
339 {
340 
341  if( fastTrack.GetPrimaryTrack()->GetKineticEnergy() > EnergyStop )
342  return;
343 
344  //deposita in uno spot unico l'energia
345  //con andamento exp decrescente.
346 
347  // Kill the particle to be parametrised
348  fastStep.KillPrimaryTrack();
349  fastStep.SetPrimaryTrackPathLength(0.0);
350  fastStep.SetTotalEnergyDeposited(fastTrack.GetPrimaryTrack()
351  ->GetKineticEnergy());
352  // other settings????
353  feSpotList.clear();
354 
355  //-----------------------------
356  // Get track parameters
357  //-----------------------------
358 
359  // E,vect{p} and t,vec(x)
360  G4double Energy =
361  fastTrack.GetPrimaryTrack()->GetKineticEnergy();
362  // axis of the shower, in global reference frame:
363  G4ThreeVector DirectionShower =
364  fastTrack.GetPrimaryTrack()->GetMomentumDirection();
365  // starting point of the shower:
366  G4ThreeVector PositionShower =
367  fastTrack.GetPrimaryTrack()->GetPosition();
368 
369  //G4double DEneSampling = Parameterisation->ApplySampling(Energy,Energy);
370  //if(DEneSampling <= 0.00) DEneSampling=Energy;
371 
372  if(Energy > 0.0)
373  {
374  G4double dist = Parameterisation->GenerateExponential(Energy);
375 
376  GFlashEnergySpot Spot;
377  Spot.SetEnergy( Energy );
378  G4ThreeVector SpotPosition = PositionShower + dist*DirectionShower;
379  Spot.SetPosition(SpotPosition);
380 
381  // Record the Spot:
382  feSpotList.push_back(Spot);
383 
384  //Generate Hits of this spot
385  HMaker->make(Spot);
386  }
387 }
388 
389 */
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