lars/geant4
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Import Geant4 9.5.0 source tree

Browse Source
This commit is contained in:
Gabriele Cosmo
2016-06-09 16:46:55 +02:00
parent 89a9605df1
commit b1eb5424d2
10957 changed files with 888481 additions and 160139 deletions
Download Patch File Download Diff File Expand all files Collapse all files
source/processes/hadronic/models/coherent_elastic/src/G4LEpp.cc
+21 -70
View File
@@ -27,6 +27,7 @@
// G4 Low energy model: n-n or p-p scattering
// F.W. Jones, L.G. Greeniaus, H.P. Wellisch
// FWJ 27-AUG-2010: extended Coulomb-suppressed data to 5 GeV
#include "G4LEpp.hh"
#include "Randomize.hh"
@@ -44,7 +45,7 @@ G4LEpp::G4LEpp():G4HadronicInteraction("G4LEpp")
SetCoulombEffects(0);
SetMinEnergy(0.);
SetMaxEnergy(1200.*GeV);
SetMaxEnergy(5.*GeV);
}
G4LEpp::~G4LEpp()
@@ -62,6 +63,7 @@ G4LEpp::SetCoulombEffects(G4int State)
sig[i] = SigCoul[i];
}
elab = ElabCoul;
SetMaxEnergy(1.2*GeV);
}
else {
for(G4int i=0; i<NANGLE; i++)
@@ -69,6 +71,7 @@ G4LEpp::SetCoulombEffects(G4int State)
sig[i] = Sig[i];
}
elab = Elab;
SetMaxEnergy(5.*GeV);
}
}
@@ -86,13 +89,12 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
G4double ek = aParticle->GetKineticEnergy();
G4ThreeVector theInitial = aParticle->Get4Momentum().vect();
// if (verboseLevel > 1)
{
if (verboseLevel > 1) {
G4double E = aParticle->GetTotalEnergy();
G4double E0 = aParticle->GetDefinition()->GetPDGMass();
G4double Q = aParticle->GetDefinition()->GetPDGCharge();
G4double N = targetNucleus.GetN();
G4double Z = targetNucleus.GetZ();
G4int A = targetNucleus.GetA_asInt();
G4int Z = targetNucleus.GetZ_asInt();
G4cout << "G4LEpp:ApplyYourself: incident particle: "
<< aParticle->GetDefinition()->GetParticleName() << G4endl;
G4cout << "P = " << P/GeV << " GeV/c"
@@ -104,7 +106,7 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
<< ", mass = " << E0/GeV << " GeV"
<< ", charge = " << Q << G4endl;
G4cout << "G4LEpp:ApplyYourself: material:" << G4endl;
G4cout << "A = " << N
G4cout << "A = " << A
<< ", Z = " << Z
<< ", atomic mass "
<< G4Proton::Proton()->GetPDGMass()/GeV << "GeV"
@@ -112,9 +114,9 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
//
// GHEISHA ADD operation to get total energy, mass, charge
//
E += G4Proton::Proton()->GetPDGMass();
E += proton_mass_c2;
G4double E02 = E*E - P*P;
E0 = std::sqrt(std::abs(E02));
E0 = std::sqrt(std::fabs(E02));
if (E02 < 0)E0 *= -1;
Q += Z;
G4cout << "G4LEpp:ApplyYourself: total:" << G4endl;
@@ -135,8 +137,6 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
else
je1 = midBin;
} while (je2 - je1 > 1);
// G4int j;
//std::abs(ek-elab[je1]) < std::abs(ek-elab[je2]) ? j = je1 : j = je2;
G4double delab = elab[je2] - elab[je1];
// Sample the angle
@@ -172,37 +172,19 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
<< sigint1 << " " << sigint2 << G4endl;
} while (ke2 - ke1 > 1);
// sigint1 and sigint2 should be recoverable from above loop
// G4double dsig = sig[je2][ke1] - sig[je1][ke1];
// G4double rc = dsig/delab;
// G4double b = sig[je1][ke1] - rc*elab[je1];
// G4double sigint1 = rc*ek + b;
// G4double dsig = sig[je2][ke2] - sig[je1][ke2];
// G4double rc = dsig/delab;
// G4double b = sig[je1][ke2] - rc*elab[je1];
// G4double sigint2 = rc*ek + b;
dsig = sigint2 - sigint1;
rc = 1./dsig;
b = ke1 - rc*sigint1;
G4double kint = rc*sample + b;
G4double theta = (0.5 + kint)*pi/180.;
if (theta < 0.) theta = 0.;
// G4int k;
//std::abs(sample-sig[j][ke1]) < std::abs(sample-sig[j][ke2]) ? k = ke1 : k = ke2;
// G4double theta = (0.5 + k)*pi/180.;
if (theta < 0.) { theta = 0.; }
if (verboseLevel > 1) {
G4cout << " energy bin " << je1 << " energy=" << elab[je1] << G4endl;
G4cout << " angle bin " << kint << " angle=" << theta/degree << G4endl;
}
// Get the target particle
G4DynamicParticle* targetParticle = targetNucleus.ReturnTargetParticle();
G4double E1 = aParticle->GetTotalEnergy();
@@ -211,7 +193,6 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
G4double M2 = targetParticle->GetDefinition()->GetPDGMass();
G4double totalEnergy = E1 + E2;
G4double pseudoMass = std::sqrt(totalEnergy*totalEnergy - P*P);
// pseudoMass also = std::sqrt(M1*M1 + M2*M2 + 2*M2*E1)
// Transform into centre of mass system
@@ -224,7 +205,7 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
G4cout << " E1, M1 (GeV) " << E1/GeV << " " << M1/GeV << G4endl;
G4cout << " E2, M2 (GeV) " << E2/GeV << " " << M2/GeV << G4endl;
G4cout << " particle 1 momentum in CM " << px/GeV << " " << py/GeV << " "
<< pz/GeV << " " << p/GeV << G4endl;
<< pz/GeV << " " << p/GeV << G4endl;
}
// First scatter w.r.t. Z axis
@@ -237,18 +218,14 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
if (px*px + py*py > 0) {
G4double cost, sint, ph, cosp, sinp;
cost = pz/p;
sint = (std::sqrt(std::abs((1-cost)*(1+cost))) + std::sqrt(px*px+py*py)/p)/2;
sint = (std::sqrt(std::fabs((1-cost)*(1+cost))) + std::sqrt(px*px+py*py)/p)/2;
py < 0 ? ph = 3*halfpi : ph = halfpi;
if (std::abs(px) > 0.000001*GeV) ph = std::atan2(py,px);
if (std::fabs(px) > 0.000001*GeV) ph = std::atan2(py,px);
cosp = std::cos(ph);
sinp = std::sin(ph);
px = (cost*cosp*pxnew - sinp*pynew + sint*cosp*pznew);
py = (cost*sinp*pxnew + cosp*pynew + sint*sinp*pznew);
pz = (-sint*pxnew + cost*pznew);
// G4ThreeVector it(a,b,c);
// p0->SetMomentum(it);
// G4ThreeVector aTargetMom = theInitial - it;
// targetParticle->SetMomentum(aTargetMom);
}
else {
px = pxnew;
@@ -304,7 +281,6 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
newP->SetDefinition(const_cast<G4ParticleDefinition *>(aParticle->GetDefinition()) );
newP->SetMomentum(G4ThreeVector(PB[1], PB[2], PB[3]));
//The target particle...
PA[1] = -px;
@@ -322,51 +298,26 @@ G4LEpp::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& targetNucleus)
targetParticle->SetMomentum(G4ThreeVector(PB[1], PB[2], PB[3]));
// G4double ektotal = newP->GetKineticEnergy() +
// targetParticle->GetKineticEnergy();
if (verboseLevel > 1) {
G4cout << " particle 1 momentum in LAB "
<< newP->GetMomentum()*(1./GeV)
<< newP->GetMomentum()/GeV
<< " " << newP->GetTotalMomentum()/GeV << G4endl;
G4cout << " particle 2 momentum in LAB "
<< targetParticle->GetMomentum()*(1./GeV)
<< targetParticle->GetMomentum()/GeV
<< " " << targetParticle->GetTotalMomentum()/GeV << G4endl;
G4cout << " TOTAL momentum in LAB "
<< (newP->GetMomentum()+targetParticle->GetMomentum())*(1./GeV)
<< (newP->GetMomentum()+targetParticle->GetMomentum())/GeV
<< " "
<< (newP->GetMomentum()+targetParticle->GetMomentum()).mag()/GeV
<< G4endl;
}
// if (theta < pi/2.) {
// G4double p = newP->GetMomentum().mag();
// G4ThreeVector m = newP->GetMomentum();
// if (p > DBL_MIN)
// theParticleChange.SetMomentumChange(m.x()/p, m.y()/p, m.z()/p);
// else
// theParticleChange.SetMomentumChange(0., 0., 0.);
theParticleChange.SetMomentumChange( newP->GetMomentumDirection());
theParticleChange.SetEnergyChange(newP->GetKineticEnergy());
delete newP;
// }
// else {
// // charge exchange
// theParticleChange.SetNumberOfSecondaries(2);
// theParticleChange.AddSecondary(newP);
// theParticleChange.SetStatusChange(fStopAndKill);
// // theParticleChange.SetEnergyChange(0.0);
// }
theParticleChange.SetMomentumChange( newP->GetMomentumDirection());
theParticleChange.SetEnergyChange(newP->GetKineticEnergy());
delete newP;
// Recoil particle
G4DynamicParticle* p1 = new G4DynamicParticle;
p1->SetDefinition(targetParticle->GetDefinition());
p1->SetMomentum(targetParticle->GetMomentum());
theParticleChange.AddSecondary(p1);
theParticleChange.AddSecondary(targetParticle);
return &theParticleChange;
}