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This commit is contained in:
Gabriele Cosmo
2021-06-25 16:12:29 +02:00
parent c968e26a39
commit 6399a014b6
4200 changed files with 207479 additions and 237366 deletions
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source/processes/electromagnetic/muons/src/G4MuBetheBlochModel.cc
+16 -29
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@@ -78,23 +78,14 @@ using namespace std;
G4MuBetheBlochModel::G4MuBetheBlochModel(const G4ParticleDefinition* p,
const G4String& nam)
: G4VEmModel(nam),
particle(nullptr),
limitKinEnergy(100.*keV),
logLimitKinEnergy(G4Log(limitKinEnergy)),
twoln10(2.0*G4Log(10.0)),
//bg2lim(0.0169),
//taulim(8.4146e-3),
alphaprime(fine_structure_const/twopi)
limitKinEnergy(100.*CLHEP::keV),
logLimitKinEnergy(G4Log(limitKinEnergy)),
twoln10(2.0*G4Log(10.0)),
alphaprime(CLHEP::fine_structure_const/CLHEP::twopi)
{
theElectron = G4Electron::Electron();
corr = G4LossTableManager::Instance()->EmCorrections();
fParticleChange = nullptr;
// initial initialisation of memeber should be overwritten
// by SetParticle
mass = massSquare = ratio = 1.0;
if(p) { SetParticle(p); }
if(nullptr != p) { SetParticle(p); }
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -121,8 +112,10 @@ G4double G4MuBetheBlochModel::MaxSecondaryEnergy(const G4ParticleDefinition*,
void G4MuBetheBlochModel::Initialise(const G4ParticleDefinition* p,
const G4DataVector&)
{
if(p) { SetParticle(p); }
if(!fParticleChange) { fParticleChange = GetParticleChangeForLoss(); }
SetParticle(p);
if(nullptr == fParticleChange) {
fParticleChange = GetParticleChangeForLoss();
}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -135,7 +128,7 @@ G4double G4MuBetheBlochModel::ComputeCrossSectionPerElectron(
{
G4double cross = 0.0;
G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
G4double maxEnergy = min(tmax,maxKinEnergy);
G4double maxEnergy = std::min(tmax,maxKinEnergy);
if(cutEnergy < maxEnergy) {
G4double totEnergy = kineticEnergy + mass;
@@ -153,7 +146,7 @@ G4double G4MuBetheBlochModel::ComputeCrossSectionPerElectron(
G4double logstep = logtmax - logtmin;
G4double dcross = 0.0;
for (G4int ll=0; ll<8; ll++)
for (G4int ll=0; ll<8; ++ll)
{
G4double ep = G4Exp(logtmin + xgi[ll]*logstep);
G4double a1 = G4Log(1.0 + 2.0*ep/electron_mass_c2);
@@ -165,9 +158,7 @@ G4double G4MuBetheBlochModel::ComputeCrossSectionPerElectron(
}
cross *= twopi_mc2_rcl2/beta2;
}
// G4cout << "tmin= " << cutEnergy << " tmax= " << tmax
// << " cross= " << cross << G4endl;
@@ -212,7 +203,7 @@ G4double G4MuBetheBlochModel::ComputeDEDXPerVolume(const G4Material* material,
{
G4double tmax = MaxSecondaryEnergy(p, kineticEnergy);
G4double tau = kineticEnergy/mass;
G4double cutEnergy = min(cut,tmax);
G4double cutEnergy = std::min(cut,tmax);
G4double gam = tau + 1.0;
G4double bg2 = tau * (tau+2.0);
G4double beta2 = bg2/(gam*gam);
@@ -235,10 +226,7 @@ G4double G4MuBetheBlochModel::ComputeDEDXPerVolume(const G4Material* material,
// shell correction
dedx -= 2.0*corr->ShellCorrection(p,material,kineticEnergy);
// now compute the total ionization loss
if (dedx < 0.0) dedx = 0.0 ;
dedx = std::max(dedx, 0.0);
// radiative corrections of R. Kokoulin
if (cutEnergy > limitKinEnergy) {
@@ -258,7 +246,7 @@ G4double G4MuBetheBlochModel::ComputeDEDXPerVolume(const G4Material* material,
dedx += dloss*logstep*alphaprime;
}
dedx *= twopi_mc2_rcl2*eDensity/beta2;
dedx *= CLHEP::twopi_mc2_rcl2*eDensity/beta2;
//High order corrections
dedx += corr->HighOrderCorrections(p,material,kineticEnergy,cutEnergy);
@@ -297,7 +285,6 @@ void G4MuBetheBlochModel::SampleSecondaries(vector<G4DynamicParticle*>* vdp,
deltaKinEnergy = minKinEnergy*maxKinEnergy
/(minKinEnergy*(1.0 - q) + maxKinEnergy*q);
f = 1.0 - beta2*deltaKinEnergy/tmax
+ 0.5*deltaKinEnergy*deltaKinEnergy/etot2;
@@ -323,9 +310,9 @@ void G4MuBetheBlochModel::SampleSecondaries(vector<G4DynamicParticle*>* vdp,
G4double cost = deltaKinEnergy * (totEnergy + electron_mass_c2) /
(deltaMomentum * totalMomentum);
G4double sint = sqrt(1.0 - cost*cost);
G4double sint = std::sqrt(1.0 - cost*cost);
G4double phi = twopi * G4UniformRand() ;
G4double phi = CLHEP::twopi * G4UniformRand() ;
G4ThreeVector deltaDirection(sint*cos(phi),sint*sin(phi), cost) ;
G4ThreeVector direction = dp->GetMomentumDirection();