Geant4 10.7.0
Toolkit for the simulation of the passage of particles through matter
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Public Member Functions | List of all members
G4LEnp Class Reference

#include <G4LEnp.hh>

+ Inheritance diagram for G4LEnp:

Public Member Functions

 G4LEnp ()
 
 ~G4LEnp () override
 
G4HadFinalState * ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus) override
 
G4double SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A) override
 
- Public Member Functions inherited from G4HadronElastic
 G4HadronElastic (const G4String &name="hElasticLHEP")
 
 ~G4HadronElastic () override
 
G4HadFinalState * ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus) override
 
G4double SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A) override
 
G4double GetSlopeCof (const G4int pdg)
 
void SetLowestEnergyLimit (G4double value)
 
G4double LowestEnergyLimit () const
 
G4double ComputeMomentumCMS (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A)
 
void ModelDescription (std::ostream &) const override
 
- Public Member Functions inherited from G4HadronicInteraction
 G4HadronicInteraction (const G4String &modelName="HadronicModel")
 
virtual ~G4HadronicInteraction ()
 
virtual G4HadFinalState * ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)
 
virtual G4double SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A)
 
virtual G4bool IsApplicable (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)
 
G4double GetMinEnergy () const
 
G4double GetMinEnergy (const G4Material *aMaterial, const G4Element *anElement) const
 
void SetMinEnergy (G4double anEnergy)
 
void SetMinEnergy (G4double anEnergy, const G4Element *anElement)
 
void SetMinEnergy (G4double anEnergy, const G4Material *aMaterial)
 
G4double GetMaxEnergy () const
 
G4double GetMaxEnergy (const G4Material *aMaterial, const G4Element *anElement) const
 
void SetMaxEnergy (const G4double anEnergy)
 
void SetMaxEnergy (G4double anEnergy, const G4Element *anElement)
 
void SetMaxEnergy (G4double anEnergy, const G4Material *aMaterial)
 
G4int GetVerboseLevel () const
 
void SetVerboseLevel (G4int value)
 
const G4String & GetModelName () const
 
void DeActivateFor (const G4Material *aMaterial)
 
void ActivateFor (const G4Material *aMaterial)
 
void DeActivateFor (const G4Element *anElement)
 
void ActivateFor (const G4Element *anElement)
 
G4bool IsBlocked (const G4Material *aMaterial) const
 
G4bool IsBlocked (const G4Element *anElement) const
 
void SetRecoilEnergyThreshold (G4double val)
 
G4double GetRecoilEnergyThreshold () const
 
virtual const std::pair< G4double, G4double > GetFatalEnergyCheckLevels () const
 
virtual std::pair< G4double, G4double > GetEnergyMomentumCheckLevels () const
 
void SetEnergyMomentumCheckLevels (G4double relativeLevel, G4double absoluteLevel)
 
virtual void ModelDescription (std::ostream &outFile) const
 
virtual void BuildPhysicsTable (const G4ParticleDefinition &)
 
virtual void InitialiseModel ()
 
 G4HadronicInteraction (const G4HadronicInteraction &right)=delete
 
const G4HadronicInteraction & operator= (const G4HadronicInteraction &right)=delete
 
G4bool operator== (const G4HadronicInteraction &right) const =delete
 
G4bool operator!= (const G4HadronicInteraction &right) const =delete
 

Additional Inherited Members

- Protected Member Functions inherited from G4HadronicInteraction
void SetModelName (const G4String &nam)
 
G4bool IsBlocked () const
 
void Block ()
 
- Protected Attributes inherited from G4HadronElastic
G4double pLocalTmax
 
- Protected Attributes inherited from G4HadronicInteraction
G4HadFinalState theParticleChange
 
G4int verboseLevel
 
G4double theMinEnergy
 
G4double theMaxEnergy
 
G4bool isBlocked
 

Detailed Description

Definition at line 40 of file G4LEnp.hh.

Constructor & Destructor Documentation

◆ G4LEnp()

G4LEnp::G4LEnp ( )
explicit

Definition at line 45 of file G4LEnp.cc.

45 :
46 G4HadronElastic("G4LEnp") // G4HadronicInteraction("G4LEnp")
47{
48 // theParticleChange.SetNumberOfSecondaries(1);
49
50 // SetMinEnergy(10.*MeV);
51 // SetMaxEnergy(1200.*MeV);
52 SetMinEnergy(0.);
53 SetMaxEnergy(5.*GeV);
54}
G4HadronicInteraction::SetMinEnergy
void SetMinEnergy(G4double anEnergy)
Definition: G4HadronicInteraction.hh:89
G4HadronicInteraction::SetMaxEnergy
void SetMaxEnergy(const G4double anEnergy)
Definition: G4HadronicInteraction.hh:102

◆ ~G4LEnp()

G4LEnp::~G4LEnp ( )
override

Definition at line 56 of file G4LEnp.cc.

57{
58 theParticleChange.Clear();
59}

Member Function Documentation

◆ ApplyYourself()

G4HadFinalState * G4LEnp::ApplyYourself ( const G4HadProjectile &  aTrack,
G4Nucleus &  targetNucleus 
)
overridevirtual

Reimplemented from G4HadronElastic.

Definition at line 62 of file G4LEnp.cc.

63{
64 theParticleChange.Clear();
65 const G4HadProjectile* aParticle = &aTrack;
66
67 G4double P = aParticle->GetTotalMomentum();
68 G4double Px = aParticle->Get4Momentum().x();
69 G4double Py = aParticle->Get4Momentum().y();
70 G4double Pz = aParticle->Get4Momentum().z();
71 G4double ek = aParticle->GetKineticEnergy();
72 G4ThreeVector theInitial = aParticle->Get4Momentum().vect();
73
74 if (verboseLevel > 1) {
75 G4double E = aParticle->GetTotalEnergy();
76 G4double E0 = aParticle->GetDefinition()->GetPDGMass();
77 G4double Q = aParticle->GetDefinition()->GetPDGCharge();
78 G4int A = targetNucleus.GetA_asInt();
79 G4int Z = targetNucleus.GetZ_asInt();
80 G4cout << "G4LEnp:ApplyYourself: incident particle: "
81 << aParticle->GetDefinition()->GetParticleName() << G4endl;
82 G4cout << "P = " << P/GeV << " GeV/c"
83 << ", Px = " << Px/GeV << " GeV/c"
84 << ", Py = " << Py/GeV << " GeV/c"
85 << ", Pz = " << Pz/GeV << " GeV/c" << G4endl;
86 G4cout << "E = " << E/GeV << " GeV"
87 << ", kinetic energy = " << ek/GeV << " GeV"
88 << ", mass = " << E0/GeV << " GeV"
89 << ", charge = " << Q << G4endl;
90 G4cout << "G4LEnp:ApplyYourself: material:" << G4endl;
91 G4cout << "A = " << A
92 << ", Z = " << Z
93 << ", atomic mass "
94 << G4Proton::Proton()->GetPDGMass()/GeV << "GeV"
95 << G4endl;
96 //
97 // GHEISHA ADD operation to get total energy, mass, charge
98 //
99 E += proton_mass_c2;
100 G4double E02 = E*E - P*P;
101 E0 = std::sqrt(std::abs(E02));
102 if (E02 < 0)E0 *= -1;
103 Q += Z;
104 G4cout << "G4LEnp:ApplyYourself: total:" << G4endl;
105 G4cout << "E = " << E/GeV << " GeV"
106 << ", mass = " << E0/GeV << " GeV"
107 << ", charge = " << Q << G4endl;
108 }
109
110 // Find energy bin
111
112 G4int je1 = 0;
113 G4int je2 = NENERGY - 1;
114 ek = ek/GeV;
115 do {
116 G4int midBin = (je1 + je2)/2;
117 if (ek < elab[midBin])
118 je2 = midBin;
119 else
120 je1 = midBin;
121 } while (je2 - je1 > 1); /* Loop checking, 10.08.2015, A.Ribon */
122 G4double delab = elab[je2] - elab[je1];
123
124 // Sample the angle
125
126 G4double sample = G4UniformRand();
127 G4int ke1 = 0;
128 G4int ke2 = NANGLE - 1;
129 G4double dsig = sig[je2][0] - sig[je1][0];
130 G4double rc = dsig/delab;
131 G4double b = sig[je1][0] - rc*elab[je1];
132 G4double sigint1 = rc*ek + b;
133 G4double sigint2 = 0.;
134
135 if (verboseLevel > 1) {
136 G4cout << "sample=" << sample << G4endl
137 << ke1 << " " << ke2 << " "
138 << sigint1 << " " << sigint2 << G4endl;
139 }
140 do {
141 G4int midBin = (ke1 + ke2)/2;
142 dsig = sig[je2][midBin] - sig[je1][midBin];
143 rc = dsig/delab;
144 b = sig[je1][midBin] - rc*elab[je1];
145 G4double sigint = rc*ek + b;
146 if (sample < sigint) {
147 ke2 = midBin;
148 sigint2 = sigint;
149 }
150 else {
151 ke1 = midBin;
152 sigint1 = sigint;
153 }
154 if (verboseLevel > 1) {
155 G4cout << ke1 << " " << ke2 << " "
156 << sigint1 << " " << sigint2 << G4endl;
157 }
158 } while (ke2 - ke1 > 1); /* Loop checking, 10.08.2015, A.Ribon */
159
160 dsig = sigint2 - sigint1;
161 rc = 1./dsig;
162 b = ke1 - rc*sigint1;
163 G4double kint = rc*sample + b;
164 G4double theta = (0.5 + kint)*pi/180.;
165
166 if (verboseLevel > 1) {
167 G4cout << " energy bin " << je1 << " energy=" << elab[je1] << G4endl;
168 G4cout << " angle bin " << kint << " angle=" << theta/degree << G4endl;
169 }
170
171 // Get the target particle
172
173 G4DynamicParticle* targetParticle = targetNucleus.ReturnTargetParticle();
174
175 G4double E1 = aParticle->GetTotalEnergy();
176 G4double M1 = aParticle->GetDefinition()->GetPDGMass();
177 G4double E2 = targetParticle->GetTotalEnergy();
178 G4double M2 = targetParticle->GetDefinition()->GetPDGMass();
179 G4double totalEnergy = E1 + E2;
180 G4double pseudoMass = std::sqrt(totalEnergy*totalEnergy - P*P);
181
182 // Transform into centre of mass system
183
184 G4double px = (M2/pseudoMass)*Px;
185 G4double py = (M2/pseudoMass)*Py;
186 G4double pz = (M2/pseudoMass)*Pz;
187 G4double p = std::sqrt(px*px + py*py + pz*pz);
188
189 if (verboseLevel > 1) {
190 G4cout << " E1, M1 (GeV) " << E1/GeV << " " << M1/GeV << G4endl;
191 G4cout << " E2, M2 (GeV) " << E2/GeV << " " << M2/GeV << G4endl;
192 G4cout << " particle 1 momentum in CM " << px/GeV << " " << py/GeV << " "
193 << pz/GeV << " " << p/GeV << G4endl;
194 }
195
196 // First scatter w.r.t. Z axis
197 G4double phi = G4UniformRand()*twopi;
198 G4double pxnew = p*std::sin(theta)*std::cos(phi);
199 G4double pynew = p*std::sin(theta)*std::sin(phi);
200 G4double pznew = p*std::cos(theta);
201
202 // Rotate according to the direction of the incident particle
203 if (px*px + py*py > 0) {
204 G4double cost, sint, ph, cosp, sinp;
205 cost = pz/p;
206 sint = (std::sqrt(std::fabs((1-cost)*(1+cost))) + std::sqrt(px*px+py*py)/p)/2;
207 py < 0 ? ph = 3*halfpi : ph = halfpi;
208 if (std::abs(px) > 0.000001*GeV) ph = std::atan2(py,px);
209 cosp = std::cos(ph);
210 sinp = std::sin(ph);
211 px = (cost*cosp*pxnew - sinp*pynew + sint*cosp*pznew);
212 py = (cost*sinp*pxnew + cosp*pynew + sint*sinp*pznew);
213 pz = (-sint*pxnew + cost*pznew);
214 }
215 else {
216 px = pxnew;
217 py = pynew;
218 pz = pznew;
219 }
220
221 if (verboseLevel > 1) {
222 G4cout << " AFTER SCATTER..." << G4endl;
223 G4cout << " particle 1 momentum in CM " << px/GeV << " " << py/GeV << " "
224 << pz/GeV << " " << p/GeV << G4endl;
225 }
226
227 // Transform to lab system
228
229 G4double E1pM2 = E1 + M2;
230 G4double betaCM = P/E1pM2;
231 G4double betaCMx = Px/E1pM2;
232 G4double betaCMy = Py/E1pM2;
233 G4double betaCMz = Pz/E1pM2;
234 G4double gammaCM = E1pM2/std::sqrt(E1pM2*E1pM2 - P*P);
235
236 if (verboseLevel > 1) {
237 G4cout << " betaCM " << betaCMx << " " << betaCMy << " "
238 << betaCMz << " " << betaCM << G4endl;
239 G4cout << " gammaCM " << gammaCM << G4endl;
240 }
241
242 // Now following GLOREN...
243
244 G4double BETA[5], PA[5], PB[5];
245 BETA[1] = -betaCMx;
246 BETA[2] = -betaCMy;
247 BETA[3] = -betaCMz;
248 BETA[4] = gammaCM;
249
250 //The incident particle...
251
252 PA[1] = px;
253 PA[2] = py;
254 PA[3] = pz;
255 PA[4] = std::sqrt(M1*M1 + p*p);
256
257 G4double BETPA = BETA[1]*PA[1] + BETA[2]*PA[2] + BETA[3]*PA[3];
258 G4double BPGAM = (BETPA * BETA[4]/(BETA[4] + 1.) - PA[4]) * BETA[4];
259
260 PB[1] = PA[1] + BPGAM * BETA[1];
261 PB[2] = PA[2] + BPGAM * BETA[2];
262 PB[3] = PA[3] + BPGAM * BETA[3];
263 PB[4] = (PA[4] - BETPA) * BETA[4];
264
265 G4DynamicParticle* newP = new G4DynamicParticle;
266 newP->SetDefinition(aParticle->GetDefinition());
267 newP->SetMomentum(G4ThreeVector(PB[1], PB[2], PB[3]));
268
269 //The target particle...
270
271 PA[1] = -px;
272 PA[2] = -py;
273 PA[3] = -pz;
274 PA[4] = std::sqrt(M2*M2 + p*p);
275
276 BETPA = BETA[1]*PA[1] + BETA[2]*PA[2] + BETA[3]*PA[3];
277 BPGAM = (BETPA * BETA[4]/(BETA[4] + 1.) - PA[4]) * BETA[4];
278
279 PB[1] = PA[1] + BPGAM * BETA[1];
280 PB[2] = PA[2] + BPGAM * BETA[2];
281 PB[3] = PA[3] + BPGAM * BETA[3];
282 PB[4] = (PA[4] - BETPA) * BETA[4];
283
284 targetParticle->SetMomentum(G4ThreeVector(PB[1], PB[2], PB[3]));
285
286 if (verboseLevel > 1) {
287 G4cout << " particle 1 momentum in LAB "
288 << newP->GetMomentum()*(1./GeV)
289 << " " << newP->GetTotalMomentum()/GeV << G4endl;
290 G4cout << " particle 2 momentum in LAB "
291 << targetParticle->GetMomentum()*(1./GeV)
292 << " " << targetParticle->GetTotalMomentum()/GeV << G4endl;
293 G4cout << " TOTAL momentum in LAB "
294 << (newP->GetMomentum()+targetParticle->GetMomentum())*(1./GeV)
295 << " "
296 << (newP->GetMomentum()+targetParticle->GetMomentum()).mag()/GeV
297 << G4endl;
298 }
299
300 theParticleChange.SetMomentumChange(newP->GetMomentumDirection());
301 theParticleChange.SetEnergyChange(newP->GetKineticEnergy());
302 delete newP;
303 theParticleChange.AddSecondary(targetParticle);
304
305 return &theParticleChange;
306}
A
double A(double temperature)
Definition: G4DNAElectronHoleRecombination.cc:60
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition: G4ThreeVector.hh:36
G4double
double G4double
Definition: G4Types.hh:83
G4int
int G4int
Definition: G4Types.hh:85
G4endl
#define G4endl
Definition: G4ios.hh:57
G4cout
G4GLOB_DLL std::ostream G4cout
G4UniformRand
#define G4UniformRand()
Definition: Randomize.hh:52
CLHEP::HepLorentzVector::vect
Hep3Vector vect() const
G4DynamicParticle::GetMomentumDirection
const G4ThreeVector & GetMomentumDirection() const
G4DynamicParticle::SetDefinition
void SetDefinition(const G4ParticleDefinition *aParticleDefinition)
Definition: G4DynamicParticle.cc:325
G4DynamicParticle::GetDefinition
G4ParticleDefinition * GetDefinition() const
G4DynamicParticle::GetKineticEnergy
G4double GetKineticEnergy() const
G4DynamicParticle::GetTotalEnergy
G4double GetTotalEnergy() const
G4DynamicParticle::SetMomentum
void SetMomentum(const G4ThreeVector &momentum)
Definition: G4DynamicParticle.cc:393
G4DynamicParticle::GetMomentum
G4ThreeVector GetMomentum() const
G4DynamicParticle::GetTotalMomentum
G4double GetTotalMomentum() const
G4HadFinalState::AddSecondary
void AddSecondary(G4DynamicParticle *aP, G4int mod=-1)
Definition: G4HadFinalState.hh:61
G4HadFinalState::SetEnergyChange
void SetEnergyChange(G4double anEnergy)
Definition: G4HadFinalState.cc:39
G4HadFinalState::SetMomentumChange
void SetMomentumChange(const G4ThreeVector &aV)
Definition: G4HadFinalState.hh:56
G4HadProjectile::GetTotalMomentum
G4double GetTotalMomentum() const
Definition: G4HadProjectile.hh:111
G4HadProjectile::GetDefinition
const G4ParticleDefinition * GetDefinition() const
Definition: G4HadProjectile.hh:86
G4HadProjectile::GetKineticEnergy
G4double GetKineticEnergy() const
Definition: G4HadProjectile.hh:116
G4HadProjectile::Get4Momentum
const G4LorentzVector & Get4Momentum() const
Definition: G4HadProjectile.hh:91
G4HadProjectile::GetTotalEnergy
G4double GetTotalEnergy() const
Definition: G4HadProjectile.hh:106
G4Nucleus::GetA_asInt
G4int GetA_asInt() const
Definition: G4Nucleus.hh:109
G4Nucleus::GetZ_asInt
G4int GetZ_asInt() const
Definition: G4Nucleus.hh:115
G4Nucleus::ReturnTargetParticle
G4DynamicParticle * ReturnTargetParticle() const
Definition: G4Nucleus.cc:241
G4ParticleDefinition::GetPDGCharge
G4double GetPDGCharge() const
Definition: G4ParticleDefinition.hh:112
G4ParticleDefinition::GetParticleName
const G4String & GetParticleName() const
Definition: G4ParticleDefinition.hh:108
G4Proton::Proton
static G4Proton * Proton()
Definition: G4Proton.cc:92

◆ SampleInvariantT()

G4double G4LEnp::SampleInvariantT ( const G4ParticleDefinition *  p,
G4double  plab,
G4int  Z,
G4int  A 
)
overridevirtual

Reimplemented from G4HadronElastic.

Definition at line 312 of file G4LEnp.cc.

314{
315 G4double nMass = p->GetPDGMass(); // 939.565346*MeV;
316 G4double ek = std::sqrt(plab*plab+nMass*nMass) - nMass;
317
318 // Find energy bin
319
320 G4int je1 = 0;
321 G4int je2 = NENERGY - 1;
322 ek = ek/GeV;
323
324 do
325 {
326 G4int midBin = (je1 + je2)/2;
327 if (ek < elab[midBin])
328 je2 = midBin;
329 else
330 je1 = midBin;
331 } while (je2 - je1 > 1); /* Loop checking, 10.08.2015, A.Ribon */
332
333 G4double delab = elab[je2] - elab[je1];
334
335 // Sample the angle
336
337 G4double sample = G4UniformRand();
338 G4int ke1 = 0;
339 G4int ke2 = NANGLE - 1;
340 G4double dsig = sig[je2][0] - sig[je1][0];
341 G4double rc = dsig/delab;
342 G4double b = sig[je1][0] - rc*elab[je1];
343 G4double sigint1 = rc*ek + b;
344 G4double sigint2 = 0.;
345
346 do
347 {
348 G4int midBin = (ke1 + ke2)/2;
349 dsig = sig[je2][midBin] - sig[je1][midBin];
350 rc = dsig/delab;
351 b = sig[je1][midBin] - rc*elab[je1];
352 G4double sigint = rc*ek + b;
353
354 if (sample < sigint)
355 {
356 ke2 = midBin;
357 sigint2 = sigint;
358 }
359 else
360 {
361 ke1 = midBin;
362 sigint1 = sigint;
363 }
364 } while (ke2 - ke1 > 1); /* Loop checking, 10.08.2015, A.Ribon */
365
366 dsig = sigint2 - sigint1;
367 rc = 1./dsig;
368 b = ke1 - rc*sigint1;
369
370 G4double kint = rc*sample + b;
371 G4double theta = (0.5 + kint)*pi/180.;
372 G4double t = 0.5*plab*plab*(1-std::cos(theta));
373
374 return t;
375}
The documentation for this class was generated from the following files: