Import Geant4 0.0.0 source tree
This commit is contained in:
Gabriele Cosmo
@@ -0,0 +1,122 @@
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// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
|
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4EnergyRangeManager.cc,v 2.3 1998/07/13 17:38:15 fjones Exp $
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// GEANT4 tag $Name: geant4-00 $
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//
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// Hadronic Process: Energy Range Manager
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// original by H.P. Wellisch
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// modified by J.L. Chuma, TRIUMF, 22-Nov-1996
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// Last modified: 24-Mar-1997
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// fix in the counter-hndling: H.P. Wellisch 04-Apr-97
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// throw an exception if no model found: J.L. Chuma 04-Apr-97
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#include "G4EnergyRangeManager.hh"
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#include "Randomize.hh"
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G4EnergyRangeManager::G4EnergyRangeManager(
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const G4EnergyRangeManager &right )
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{
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if( this != &right )
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{
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for( G4int i=0; i<theHadronicInteractionCounter; ++i )
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theHadronicInteraction[i] = right.theHadronicInteraction[i];
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theHadronicInteractionCounter = right.theHadronicInteractionCounter;
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}
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}
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G4EnergyRangeManager &
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G4EnergyRangeManager::operator=(
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const G4EnergyRangeManager &right )
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{
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if( this != &right )
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{
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for( G4int i=0; i<theHadronicInteractionCounter; ++i )
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theHadronicInteraction[i] =
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right.theHadronicInteraction[i];
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theHadronicInteractionCounter =
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right.theHadronicInteractionCounter;
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}
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return *this;
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}
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void
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G4EnergyRangeManager::RegisterMe(
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G4HadronicInteraction *a )
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{
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if( theHadronicInteractionCounter+1 > MAX_NUMBER_OF_MODELS )
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G4Exception(
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"EnergyRangeManager::RegisterMe: TOO MANY MODELS");
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theHadronicInteraction[ theHadronicInteractionCounter++ ] = a;
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}
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G4HadronicInteraction *
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G4EnergyRangeManager::GetHadronicInteraction(
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const G4double kineticEnergy,
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const G4Material *aMaterial,
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const G4Element *anElement ) const
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{
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G4int counter = GetHadronicInteractionCounter();
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if( counter == 0 )
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G4Exception("GetHadronicInteraction: NO MODELS STORED");
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G4int cou = 0, memory = 0, memor2 = 0;
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G4double emi1 = 0.0, ema1 = 0.0, emi2 = 0.0, ema2 = 0.0;
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for( G4int i=0; i<counter; i++ ) {
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G4double low = theHadronicInteraction[i]->GetMinEnergy( aMaterial, anElement );
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// Work-around for particles with 0 kinetic energy, which still
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// require a model to return a ParticleChange
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if (low == 0.) low = -DBL_MIN;
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G4double high = theHadronicInteraction[i]->GetMaxEnergy( aMaterial, anElement );
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if( low < kineticEnergy && high >= kineticEnergy )
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{
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++cou;
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emi2 = emi1;
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ema2 = ema1;
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emi1 = low;
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ema1 = high;
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memor2 = memory;
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memory = i;
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}
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}
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G4int m;
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G4double rand;
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switch ( cou )
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{
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case 0:
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G4Exception("GetHadronicInteraction: No model found for this energy range");
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return 0;
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case 1:
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m = memory;
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break;
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case 2:
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if( (emi2<=emi1 && ema2>=ema1) || (emi2>=emi1 && ema2<=ema1) )
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G4Exception(
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"GetHadronicInteraction: Energy ranges of two models fully overlapping");
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rand = G4UniformRand();
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if( emi1 < emi2 )
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{
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if( (ema1-kineticEnergy)/(ema1-emi2)<rand )
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m = memory;
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else
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m = memor2;
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} else {
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if( (ema2-kineticEnergy)/(ema2-emi1)<rand )
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m = memor2;
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else
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m = memory;
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}
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break;
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default:
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G4Exception(
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"GetHadronicInteraction: More than two competing models in this energy range");
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}
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return theHadronicInteraction[m];
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}
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/* end of file */
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@@ -0,0 +1,112 @@
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// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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||||
//
|
||||
// By copying, distributing or modifying the Program (or any work
|
||||
// based on the Program) you indicate your acceptance of this statement,
|
||||
// and all its terms.
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//
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// $Id: G4HadronInelasticProcess.cc,v 2.1 1998/08/24 11:56:59 hpw Exp $
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// GEANT4 tag $Name: geant4-00 $
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//
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// Hadronic Inelastic Process Class
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// J.L. Chuma, TRIUMF, 24-Mar-1997
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// Last modified: 27-Mar-1997
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// J.P. Wellisch: Bug hunting, 23-Apr-97
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// Modified by J.L.Chuma 8-Jul-97 to eliminate possible division by zero for sigma
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//
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// 14-APR-98 F.W.Jones: variant G4HadronInelastic process for
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// G4CrossSectionDataSet/DataStore class design.
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//
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// 17-JUN-98 F.W.Jones: removed extraneous code causing core dump.
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//
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#include "G4HadronInelasticProcess.hh"
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G4double G4HadronInelasticProcess::GetMeanFreePath(
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const G4Track &aTrack,
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G4double previousStepSize,
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G4ForceCondition *condition )
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{
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const G4DynamicParticle *aParticle = aTrack.GetDynamicParticle();
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if( aParticle->GetDefinition() != theParticle )
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G4Exception( this->GetProcessName()+
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" called for "+
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aParticle->GetDefinition()->GetParticleName() );
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G4Material *aMaterial = aTrack.GetMaterial();
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G4int nElements = aMaterial->GetNumberOfElements();
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// returns the mean free path in GEANT4 internal units
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const RWTPtrVector<G4Element> *theElementVector =
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aMaterial->GetElementVector();
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const G4double *theAtomicNumDensityVector =
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aMaterial->GetAtomicNumDensityVector();
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G4Element *anElement = (*theElementVector)[0];
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G4int j = anElement->GetIndex();
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// This apparently should not be here (not useful and dumps core)
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// FWJ 17-JUN-1998
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// G4bool isOutRange;
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// G4double xSection = (*((*thePhysicsTable)(j))).GetValue(
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// aParticle->GetTotalMomentum()/GeV, isOutRange );
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G4double sigma = 0.0;
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for( G4int i=0; i<nElements; ++i )
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{
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G4double xSection =
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GetMicroscopicCrossSection( aParticle, (*theElementVector)[i] );
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sigma += theAtomicNumDensityVector[i] * xSection;
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}
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if( sigma > 0.0 )
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return 1.0/sigma;
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else
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return DBL_MAX;
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}
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void
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G4HadronInelasticProcess::BuildThePhysicsTable()
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{
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if (!theCrossSectionDataStore) {
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// G4Exception("G4HadronInelasticProcess::BuildThePhysicsTable: "
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// "no CrossSectionDataStore");
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return;
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}
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theCrossSectionDataStore->BuildPhysicsTable(*theParticle);
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// G4int numberOfElements = G4Element::GetNumberOfElements();
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// thePhysicsTable = new G4PhysicsTable( numberOfElements );
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//
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// // make a PhysicsVector for each element
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//
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// static const G4ElementTable *theElementTable = G4Element::GetElementTable();
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// for( G4int i=0; i<numberOfElements; ++i )
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// (*thePhysicsTable)(i) =
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// theCrossSectionData.MakePhysicsVector( *this, *theParticle,
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// (*theElementTable)[i] );
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}
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G4double G4HadronInelasticProcess::GetMicroscopicCrossSection(
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const G4DynamicParticle *aParticle,
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const G4Element *anElement)
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{
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// returns the microscopic cross section in GEANT4 internal units
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if (!theCrossSectionDataStore) {
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G4Exception("G4HadronInelasticProcess::GetMicroscopicCrossSection:"
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"no CrossSectionDataStore");
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return DBL_MIN;
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}
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return theCrossSectionDataStore->GetCrossSection(aParticle, anElement);
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// G4bool isOutRange;
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// G4int j = anElement->GetIndex();
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//
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// G4double s = (*((*thePhysicsTable)(j))).GetValue(
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// aParticle->GetTotalMomentum()/GeV, isOutRange );
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// return s;
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}
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/* end of file */
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@@ -0,0 +1,206 @@
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// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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||||
//
|
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// By copying, distributing or modifying the Program (or any work
|
||||
// based on the Program) you indicate your acceptance of this statement,
|
||||
// and all its terms.
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//
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// $Id: G4HadronicInteraction.cc,v 2.2 1998/07/13 17:22:13 urbi Exp $
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// GEANT4 tag $Name: geant4-00 $
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//
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// Hadronic Interaction base class
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// original by H.P. Wellisch
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// modified by J.L. Chuma, TRIUMF, 21-Mar-1997
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// Last modified: 04-Apr-1997
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#include "G4HadronicInteraction.hh"
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G4double
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G4HadronicInteraction::GetMinEnergy(
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const G4Material *aMaterial, const G4Element *anElement ) const
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{
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G4int i;
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if( IsBlocked(aMaterial) )return 0.*GeV;
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if( IsBlocked(anElement) )return 0.*GeV;
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for( i=0; i<theMinCounterElements; ++i )
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{
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if( anElement == theMinElements[i] )return theMinEnergyListElements[i];
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}
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for( i=0; i<theMinCounter; ++i )
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{
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if( aMaterial == theMinMaterials[i] )return theMinEnergyList[i];
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}
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if( verboseLevel > 0 )
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G4cout << "*** Warning from HadronicInteraction::GetMinEnergy" << endl
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<< " material " << aMaterial->GetName()
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<< " not found in min energy List" << endl;
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return theMinEnergy;
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}
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void
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G4HadronicInteraction::SetMinEnergy(
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G4double anEnergy,
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G4Element *anElement )
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{
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if( IsBlocked(anElement) )
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G4cout << "*** Warning from HadronicInteraction::SetMinEnergy" << endl
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<< " The model is not active for the Element "
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<< anElement->GetName() << "." << endl;
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for( G4int i=0; i<theMinCounterElements; ++i )
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{
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if( anElement == theMinElements[i] )
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{
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theMinEnergyListElements[i] = anEnergy;
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return;
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}
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}
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if( theMinCounterElements == MAX_LIST_SIZE )
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G4Exception("SetMinEnergy: exceeded size of min energy element List");
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theMinElements[theMinCounterElements] = anElement;
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theMinEnergyListElements[theMinCounterElements++] = anEnergy;
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}
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void
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G4HadronicInteraction::SetMinEnergy(
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G4double anEnergy,
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G4Material *aMaterial )
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{
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if( IsBlocked(aMaterial) )
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G4cout << "*** Warning from HadronicInteraction::SetMinEnergy" << endl
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<< " The model is not active for the Material "
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<< aMaterial->GetName() << "." << endl;
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for( G4int i=0; i<theMinCounter; ++i )
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{
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if( aMaterial == theMinMaterials[i] )
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{
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theMinEnergyList[i] = anEnergy;
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return;
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}
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}
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if( theMinCounter == MAX_LIST_SIZE )
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G4Exception("SetMinEnergy: exceeded size of min energy material List");
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theMinMaterials[theMinCounter] = aMaterial;
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theMinEnergyList[theMinCounter++] = anEnergy;
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}
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G4double
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G4HadronicInteraction::GetMaxEnergy(
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const G4Material *aMaterial, const G4Element *anElement ) const
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{
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G4int i;
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if( IsBlocked(aMaterial) )return 0.0*GeV;
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if( IsBlocked(anElement) )return 0.0*GeV;
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for( i=0; i<theMaxCounterElements; ++i )
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{
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if( anElement == theMaxElements[i] )return theMaxEnergyListElements[i];
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}
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for( i=0; i<theMaxCounter; ++i )
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{
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if( aMaterial == theMaxMaterials[i] )return theMaxEnergyList[i];
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}
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if( verboseLevel > 0 )
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G4cout << "*** Warning from HadronicInteraction::GetMaxEnergy" << endl
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<< " material " << aMaterial->GetName()
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<< " not found in min energy List" << endl;
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return theMaxEnergy;
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}
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|
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void
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G4HadronicInteraction::SetMaxEnergy(
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G4double anEnergy,
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G4Element *anElement )
|
||||
{
|
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if( IsBlocked(anElement) )
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G4cout << "*** Warning from HadronicInteraction::SetMaxEnergy" << endl
|
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<< "Warning: The model is not active for the Element "
|
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<< anElement->GetName() << "." << endl;
|
||||
|
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for( G4int i=0; i<theMaxCounterElements; ++i )
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{
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if( anElement == theMaxElements[i] )
|
||||
{
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theMaxEnergyListElements[i] = anEnergy;
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return;
|
||||
}
|
||||
}
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if( theMaxCounterElements == MAX_LIST_SIZE )
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G4Exception("SetMaxEnergy: exceeded size of max energy element List");
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theMaxElements[theMaxCounterElements] = anElement;
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||||
theMaxEnergyListElements[theMaxCounterElements++] = anEnergy;
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}
|
||||
|
||||
void
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||||
G4HadronicInteraction::SetMaxEnergy(
|
||||
G4double anEnergy,
|
||||
G4Material *aMaterial )
|
||||
{
|
||||
if( IsBlocked(aMaterial) )
|
||||
G4cout << "*** Warning from HadronicInteraction::SetMaxEnergy" << endl
|
||||
<< "Warning: The model is not active for the Material "
|
||||
<< aMaterial->GetName() << "." << endl;
|
||||
|
||||
for( G4int i=0; i<theMaxCounter; ++i )
|
||||
{
|
||||
if( aMaterial == theMaxMaterials[i] )
|
||||
{
|
||||
theMaxEnergyList[i] = anEnergy;
|
||||
return;
|
||||
}
|
||||
}
|
||||
if( theMaxCounter == MAX_LIST_SIZE )
|
||||
G4Exception("SetMaxEnergy: exceeded size of max energy material List");
|
||||
theMaxMaterials[theMaxCounter] = aMaterial;
|
||||
theMaxEnergyList[theMaxCounter++] = anEnergy;
|
||||
}
|
||||
|
||||
void
|
||||
G4HadronicInteraction::DeActivateFor( G4Material *aMaterial )
|
||||
{
|
||||
if( theBlockedCounter == MAX_LIST_SIZE )
|
||||
G4Exception("DeActivateFor: exceeded size of blocked material List");
|
||||
theBlockedList[ theBlockedCounter++ ] = aMaterial;
|
||||
}
|
||||
|
||||
void
|
||||
G4HadronicInteraction::DeActivateFor( G4Element *anElement )
|
||||
{
|
||||
if( theBlockedCounterElements == MAX_LIST_SIZE )
|
||||
G4Exception("DeActivateFor: exceeded size of blocked elements List");
|
||||
theBlockedListElements[ theBlockedCounterElements++ ] = anElement;
|
||||
}
|
||||
|
||||
G4bool
|
||||
G4HadronicInteraction::IsBlocked( const G4Material *aMaterial ) const
|
||||
{
|
||||
G4bool tt = false;
|
||||
for( G4int i=0; i<theBlockedCounter; ++i )
|
||||
{
|
||||
if( aMaterial == theBlockedList[i] )
|
||||
{
|
||||
tt = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return tt;
|
||||
}
|
||||
|
||||
G4bool
|
||||
G4HadronicInteraction::IsBlocked( const G4Element *anElement ) const
|
||||
{
|
||||
G4bool tt = false;
|
||||
for( G4int i=0; i<theBlockedCounterElements; ++i )
|
||||
{
|
||||
if( anElement == theBlockedListElements[i] )
|
||||
{
|
||||
tt = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return tt;
|
||||
}
|
||||
|
||||
/* end of file */
|
||||
|
||||
@@ -0,0 +1,72 @@
|
||||
// This code implementation is the intellectual property of
|
||||
// the RD44 GEANT4 collaboration.
|
||||
//
|
||||
// By copying, distributing or modifying the Program (or any work
|
||||
// based on the Program) you indicate your acceptance of this statement,
|
||||
// and all its terms.
|
||||
//
|
||||
// $Id: G4HadronicProcess.cc,v 2.0 1998/07/02 16:22:25 gunter Exp $
|
||||
// GEANT4 tag $Name: geant4-00 $
|
||||
//
|
||||
// HPW to implement the choosing of an element for scattering.
|
||||
#include "G4HadronicProcess.hh"
|
||||
|
||||
G4Element * G4HadronicProcess::ChooseAandZ(
|
||||
const G4DynamicParticle *aParticle, const G4Material *aMaterial )
|
||||
{
|
||||
currentZ = 0;
|
||||
currentN = 0;
|
||||
const G4int numberOfElements = aMaterial->GetNumberOfElements();
|
||||
const G4ElementVector *theElementVector = aMaterial->GetElementVector();
|
||||
|
||||
if( numberOfElements == 1 )
|
||||
{
|
||||
currentZ = G4double((*theElementVector)(0)->GetZ());
|
||||
currentN = (*theElementVector)(0)->GetN();
|
||||
targetNucleus.SetParameters(currentN, currentZ);
|
||||
return (*theElementVector)(0);
|
||||
}
|
||||
|
||||
const G4double *theAtomicNumberDensity = aMaterial->GetAtomicNumDensityVector();
|
||||
G4double crossSectionTotal = 0;
|
||||
G4int i;
|
||||
for( i=0; i < numberOfElements; ++i )
|
||||
crossSectionTotal += theAtomicNumberDensity[i] *
|
||||
dispatch->GetMicroscopicCrossSection( aParticle, (*theElementVector)(i) );
|
||||
|
||||
G4double crossSectionSum= 0.;
|
||||
G4double random = G4UniformRand()*crossSectionTotal;
|
||||
for( i=0; i < numberOfElements; ++i )
|
||||
{
|
||||
crossSectionSum += theAtomicNumberDensity[i] *
|
||||
dispatch->GetMicroscopicCrossSection( aParticle, (*theElementVector)(i) );
|
||||
if( random<=crossSectionSum )
|
||||
{
|
||||
currentZ = G4double((*theElementVector)(i)->GetZ());
|
||||
currentN = (*theElementVector)(i)->GetN();
|
||||
targetNucleus.SetParameters(currentN, currentZ);
|
||||
return (*theElementVector)(i);
|
||||
}
|
||||
}
|
||||
currentZ = G4double((*theElementVector)(numberOfElements-1)->GetZ());
|
||||
currentN = (*theElementVector)(numberOfElements-1)->GetN();
|
||||
targetNucleus.SetParameters(currentN, currentZ);
|
||||
return (*theElementVector)(numberOfElements-1);
|
||||
}
|
||||
|
||||
G4VParticleChange *G4HadronicProcess::GeneralPostStepDoIt(
|
||||
const G4Track &aTrack, const G4Step &aStep )
|
||||
{
|
||||
const G4DynamicParticle *aParticle = aTrack.GetDynamicParticle();
|
||||
G4Material *aMaterial = aTrack.GetMaterial();
|
||||
G4double kineticEnergy = aParticle->GetKineticEnergy();
|
||||
G4Element * anElement = ChooseAandZ( aParticle, aMaterial );
|
||||
theInteraction = ChooseHadronicInteraction( kineticEnergy,
|
||||
aMaterial, anElement );
|
||||
G4VParticleChange *result =
|
||||
theInteraction->ApplyYourself( aTrack, targetNucleus);
|
||||
ResetNumberOfInteractionLengthLeft();
|
||||
return result;
|
||||
}
|
||||
|
||||
/* end of file */
|
||||
@@ -0,0 +1,365 @@
|
||||
// This code implementation is the intellectual property of
|
||||
// the RD44 GEANT4 collaboration.
|
||||
//
|
||||
// By copying, distributing or modifying the Program (or any work
|
||||
// based on the Program) you indicate your acceptance of this statement,
|
||||
// and all its terms.
|
||||
//
|
||||
//
|
||||
// Hadronic Process: Inelastic Interaction
|
||||
// original by H.P. Wellisch
|
||||
// modified by J.L. Chuma, TRIUMF, 22-Nov-1996
|
||||
// Last modified: 27-Mar-1997
|
||||
// J.P. Wellisch: 23-Apr-97: G4Exception removed
|
||||
// J.P. Wellisch: 24-Apr-97: correction for SetUpPions
|
||||
// Modified by J.L. Chuma, 30-Apr-97: added originalTarget to CalculateMomenta
|
||||
// since TwoBody needed to reset the target particle
|
||||
// J.L. Chuma, 20-Jun-97: Modified CalculateMomenta to correct the decision process
|
||||
// for whether to use GenerateXandPt or TwoCluster
|
||||
// J.L. Chuma, 06-Aug-97: added original incident particle, before Fermi motion and
|
||||
// evaporation effects are included, needed for calculating
|
||||
// self absorption and corrections for single particle spectra
|
||||
// HPW removed misunderstanding of LocalEnergyDeposit, 11.04.98.
|
||||
|
||||
#include "G4InelasticInteraction.hh"
|
||||
#include "Randomize.hh"
|
||||
|
||||
G4double
|
||||
G4InelasticInteraction::Pmltpc( // used in Cascade functions
|
||||
G4int np, G4int nm, G4int nz, G4int n, G4double b, G4double c )
|
||||
{
|
||||
const G4double expxu = 82.; // upper bound for arg. of exp
|
||||
const G4double expxl = -expxu; // lower bound for arg. of exp
|
||||
G4double npf = 0.0;
|
||||
G4double nmf = 0.0;
|
||||
G4double nzf = 0.0;
|
||||
G4int i;
|
||||
for( i=2; i<=np; i++ )npf += log((double)i);
|
||||
for( i=2; i<=nm; i++ )nmf += log((double)i);
|
||||
for( i=2; i<=nz; i++ )nzf += log((double)i);
|
||||
G4double r;
|
||||
r = min( expxu, max( expxl, -(np-nm+nz+b)*(np-nm+nz+b)/(2*c*c*n*n)-npf-nmf-nzf ) );
|
||||
return exp(r);
|
||||
}
|
||||
|
||||
G4bool
|
||||
G4InelasticInteraction::MarkLeadingStrangeParticle(
|
||||
const G4ReactionProduct ¤tParticle,
|
||||
const G4ReactionProduct &targetParticle,
|
||||
G4ReactionProduct &leadParticle )
|
||||
{
|
||||
// the following was in GenerateXandPt and TwoCluster
|
||||
// add a parameter to the GenerateXandPt function telling it about the strange particle
|
||||
//
|
||||
// assumes that the original particle was a strange particle
|
||||
//
|
||||
G4bool lead = false;
|
||||
if( (currentParticle.GetMass() >= G4KaonPlus::KaonPlus()->GetPDGMass()) &&
|
||||
(currentParticle.GetDefinition() != G4Proton::Proton()) &&
|
||||
(currentParticle.GetDefinition() != G4Neutron::Neutron()) )
|
||||
{
|
||||
lead = true;
|
||||
leadParticle = currentParticle; // set lead to the incident particle
|
||||
}
|
||||
else if( (targetParticle.GetMass() >= G4KaonPlus::KaonPlus()->GetPDGMass()) &&
|
||||
(targetParticle.GetDefinition() != G4Proton::Proton()) &&
|
||||
(targetParticle.GetDefinition() != G4Neutron::Neutron()) )
|
||||
{
|
||||
lead = true;
|
||||
leadParticle = targetParticle; // set lead to the target particle
|
||||
}
|
||||
return lead;
|
||||
}
|
||||
|
||||
void
|
||||
G4InelasticInteraction::SetUpPions(
|
||||
const G4int np,
|
||||
const G4int nm,
|
||||
const G4int nz,
|
||||
G4FastVector<G4ReactionProduct,128> &vec,
|
||||
G4int &vecLen )
|
||||
{
|
||||
if( np+nm+nz == 0 )return;
|
||||
G4int i;
|
||||
G4ReactionProduct *p = new G4ReactionProduct [np+nm+nz];
|
||||
for( i=0; i<np; ++i )
|
||||
{
|
||||
p[i].SetDefinition( G4PionPlus::PionPlus() );
|
||||
(G4UniformRand() < 0.5) ? p[i].SetSide( -1 ) : p[i].SetSide( 1 );
|
||||
vec.SetElement( vecLen++, &p[i] );
|
||||
}
|
||||
for( i=np; i<np+nm; ++i )
|
||||
{
|
||||
p[i].SetDefinition( G4PionMinus::PionMinus() );
|
||||
(G4UniformRand() < 0.5) ? p[i].SetSide( -1 ) : p[i].SetSide( 1 );
|
||||
vec.SetElement( vecLen++, &p[i] );
|
||||
}
|
||||
for( i=np+nm; i<np+nm+nz; ++i )
|
||||
{
|
||||
p[i].SetDefinition( G4PionZero::PionZero() );
|
||||
(G4UniformRand() < 0.5) ? p[i].SetSide( -1 ) : p[i].SetSide( 1 );
|
||||
vec.SetElement( vecLen++, &p[i] );
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
G4InelasticInteraction::GetNormalizationConstant(
|
||||
const G4double energy, // MeV, <0 means annihilation channels
|
||||
G4double &n,
|
||||
G4double &anpn )
|
||||
{
|
||||
const G4double expxu = 82.; // upper bound for arg. of exp
|
||||
const G4double expxl = -expxu; // lower bound for arg. of exp
|
||||
const G4int numSec = 60;
|
||||
//
|
||||
// the only difference between the calculation for annihilation channels
|
||||
// and normal is the starting value, iBegin, for the loop below
|
||||
//
|
||||
G4int iBegin = 1;
|
||||
G4double en = energy;
|
||||
if( energy < 0.0 )
|
||||
{
|
||||
iBegin = 2;
|
||||
en *= -1.0;
|
||||
}
|
||||
//
|
||||
// number of total particles vs. centre of mass Energy - 2*proton mass
|
||||
//
|
||||
G4double aleab = log(en/GeV);
|
||||
n = 3.62567 + aleab*(0.665843 + aleab*(0.336514 + aleab*(0.117712 + 0.0136912*aleab)));
|
||||
n -= 2.0;
|
||||
//
|
||||
// normalization constant for kno-distribution
|
||||
//
|
||||
anpn = 0.0;
|
||||
G4double test, temp;
|
||||
for( G4int i=iBegin; i<=numSec; ++i )
|
||||
{
|
||||
temp = pi*i/(2.0*n*n);
|
||||
test = exp( min( expxu, max( expxl, -(pi/4.0)*(i*i)/(n*n) ) ) );
|
||||
if( temp < 1.0 )
|
||||
{
|
||||
if( test >= 1.0e-10 )anpn += temp*test;
|
||||
}
|
||||
else
|
||||
anpn += temp*test;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
G4InelasticInteraction::CalculateMomenta(
|
||||
G4FastVector<G4ReactionProduct,128> &vec,
|
||||
G4int &vecLen,
|
||||
const G4DynamicParticle *originalIncident, // the original incident particle
|
||||
const G4DynamicParticle *originalTarget,
|
||||
G4ReactionProduct &modifiedOriginal, // Fermi motion and evap. effects included
|
||||
G4Nucleus &targetNucleus,
|
||||
G4ReactionProduct ¤tParticle,
|
||||
G4ReactionProduct &targetParticle,
|
||||
G4bool &incidentHasChanged,
|
||||
G4bool &targetHasChanged,
|
||||
G4bool quasiElastic )
|
||||
{
|
||||
theReactionDynamics.ProduceStrangeParticlePairs( vec, vecLen,
|
||||
modifiedOriginal, originalTarget,
|
||||
currentParticle, targetParticle,
|
||||
incidentHasChanged, targetHasChanged );
|
||||
if( quasiElastic )
|
||||
{
|
||||
theReactionDynamics.TwoBody( vec, vecLen,
|
||||
modifiedOriginal, originalTarget,
|
||||
currentParticle, targetParticle,
|
||||
targetNucleus, targetHasChanged );
|
||||
return;
|
||||
}
|
||||
G4ReactionProduct leadingStrangeParticle;
|
||||
G4bool leadFlag = MarkLeadingStrangeParticle( currentParticle,
|
||||
targetParticle,
|
||||
leadingStrangeParticle );
|
||||
//
|
||||
// Note: the number of secondaries can be reduced in GenerateXandPt and TwoCluster
|
||||
//
|
||||
G4bool finishedGenXPt = false;
|
||||
G4bool annihilation = false;
|
||||
if( originalIncident->GetDefinition()->GetPDGEncoding() < 0 &&
|
||||
currentParticle.GetMass() == 0.0 && targetParticle.GetMass() == 0.0 )
|
||||
{
|
||||
// original was an anti-particle and annihilation has taken place
|
||||
annihilation = true;
|
||||
G4double ekcor = 1.0;
|
||||
G4double ek = originalIncident->GetKineticEnergy()/GeV;
|
||||
const G4double tarmas = originalTarget->GetDefinition()->GetPDGMass()/GeV;
|
||||
if( ek > 1.0 )ekcor = 1./ek;
|
||||
const G4double atomicWeight = targetNucleus.GetN();
|
||||
ek = 2*tarmas + ek*(1.+ekcor/atomicWeight);
|
||||
modifiedOriginal.SetKineticEnergy( ek*GeV );
|
||||
//
|
||||
// evaporation -- re-calculate black track energies
|
||||
// this was Done already just before the cascade
|
||||
//
|
||||
G4double tkin = targetNucleus.EvaporationEffects( ek*GeV )/GeV;
|
||||
ek -= tkin;
|
||||
ek = max( 0.0001, ek );
|
||||
modifiedOriginal.SetKineticEnergy( ek*GeV );
|
||||
G4double amas = originalIncident->GetDefinition()->GetPDGMass()/GeV;
|
||||
G4double et = ek + amas;
|
||||
G4double p = sqrt( abs(et*et-amas*amas) );
|
||||
G4double pp = modifiedOriginal.GetMomentum().mag()/GeV;
|
||||
if( pp > 0.0 )
|
||||
{
|
||||
G4ThreeVector momentum = modifiedOriginal.GetMomentum();
|
||||
modifiedOriginal.SetMomentum( momentum * (p/pp) );
|
||||
}
|
||||
if( ek <= 0.0001 )
|
||||
{
|
||||
modifiedOriginal.SetKineticEnergy( 0.0 );
|
||||
modifiedOriginal.SetMomentum( 0.0, 0.0, 0.0 );
|
||||
}
|
||||
}
|
||||
const G4double twsup[] = { 1.0, 0.7, 0.5, 0.3, 0.2, 0.1 };
|
||||
G4double rand1 = G4UniformRand();
|
||||
G4double rand2 = G4UniformRand();
|
||||
if( annihilation || (vecLen >= 6) ||
|
||||
(modifiedOriginal.GetKineticEnergy()/GeV >= 1.0) &&
|
||||
(((originalIncident->GetDefinition() == G4KaonPlus::KaonPlus() ||
|
||||
originalIncident->GetDefinition() == G4KaonMinus::KaonMinus() ||
|
||||
originalIncident->GetDefinition() == G4KaonZeroLong::KaonZeroLong() ||
|
||||
originalIncident->GetDefinition() == G4KaonZeroShort::KaonZeroShort()) &&
|
||||
rand1 < 0.5) || rand2 > twsup[vecLen]) )
|
||||
finishedGenXPt =
|
||||
theReactionDynamics.GenerateXandPt( vec, vecLen,
|
||||
modifiedOriginal, originalIncident,
|
||||
currentParticle, targetParticle,
|
||||
targetNucleus, incidentHasChanged,
|
||||
targetHasChanged, leadFlag,
|
||||
leadingStrangeParticle );
|
||||
if( finishedGenXPt )return;
|
||||
G4bool finishedTwoClu = false;
|
||||
if( modifiedOriginal.GetTotalMomentum()/MeV < 1.0 )vecLen = 0;
|
||||
else
|
||||
{
|
||||
theReactionDynamics.SuppressChargedPions( vec, vecLen,
|
||||
modifiedOriginal, currentParticle,
|
||||
targetParticle, targetNucleus,
|
||||
incidentHasChanged, targetHasChanged );
|
||||
finishedTwoClu = theReactionDynamics.TwoCluster( vec, vecLen,
|
||||
modifiedOriginal, originalIncident,
|
||||
currentParticle, targetParticle,
|
||||
targetNucleus, incidentHasChanged,
|
||||
targetHasChanged, leadFlag,
|
||||
leadingStrangeParticle );
|
||||
}
|
||||
if( finishedTwoClu )return;
|
||||
//
|
||||
// PNBlackTrackEnergy is the kinetic energy available for
|
||||
// proton/neutron black track particles [was enp(1) in fortran code]
|
||||
// DTABlackTrackEnergy is the kinetic energy available for
|
||||
// deuteron/triton/alpha particles [was enp(3) in fortran code]
|
||||
//const G4double pnCutOff = 0.1;
|
||||
//const G4double dtaCutOff = 0.1;
|
||||
//if( (targetNucleus.GetN() >= 1.5)
|
||||
// && !(incidentHasChanged || targetHasChanged)
|
||||
// && (targetNucleus.GetPNBlackTrackEnergy()/MeV <= pnCutOff)
|
||||
// && (targetNucleus.GetDTABlackTrackEnergy()/MeV <= dtaCutOff) )
|
||||
//{
|
||||
// the atomic weight of the target nucleus is >= 1.5 AND
|
||||
// neither the incident nor the target particles have changed AND
|
||||
// there is no kinetic energy available for either proton/neutron
|
||||
// or for deuteron/triton/alpha black track particles
|
||||
// For diffraction scattering on heavy nuclei use elastic routines instead
|
||||
//G4cerr << "*** Error in G4InelasticInteraction::CalculateMomenta" << endl;
|
||||
//G4cerr << "*** the elastic scattering would be better here ***" <<endl;
|
||||
//}
|
||||
theReactionDynamics.TwoBody( vec, vecLen,
|
||||
modifiedOriginal, originalTarget,
|
||||
currentParticle, targetParticle,
|
||||
targetNucleus, targetHasChanged );
|
||||
}
|
||||
|
||||
void
|
||||
G4InelasticInteraction::SetUpChange(
|
||||
G4FastVector<G4ReactionProduct,128> &vec,
|
||||
G4int &vecLen,
|
||||
G4ReactionProduct ¤tParticle,
|
||||
G4ReactionProduct &targetParticle,
|
||||
G4bool &incidentHasChanged )
|
||||
{
|
||||
G4ParticleDefinition *aKaonZL = G4KaonZeroLong::KaonZeroLong();
|
||||
G4ParticleDefinition *aKaonZS = G4KaonZeroShort::KaonZeroShort();
|
||||
G4int i;
|
||||
if( currentParticle.GetDefinition() == aKaonZL )
|
||||
{
|
||||
if( G4UniformRand() <= 0.5 )
|
||||
{
|
||||
currentParticle.SetDefinition( aKaonZS );
|
||||
incidentHasChanged = true;
|
||||
}
|
||||
}
|
||||
else if( currentParticle.GetDefinition() == aKaonZS )
|
||||
{
|
||||
if( G4UniformRand() > 0.5 )
|
||||
{
|
||||
currentParticle.SetDefinition( aKaonZL );
|
||||
incidentHasChanged = true;
|
||||
}
|
||||
}
|
||||
if( targetParticle.GetDefinition() == aKaonZL )
|
||||
{
|
||||
if( G4UniformRand() <= 0.5 )targetParticle.SetDefinition( aKaonZS );
|
||||
}
|
||||
else if( targetParticle.GetDefinition() == aKaonZS )
|
||||
{
|
||||
if( G4UniformRand() > 0.5 )targetParticle.SetDefinition( aKaonZL );
|
||||
}
|
||||
for( i=0; i<vecLen; ++i )
|
||||
{
|
||||
if( vec[i]->GetDefinition() == aKaonZL )
|
||||
{
|
||||
if( G4UniformRand() <= 0.5 )vec[i]->SetDefinition( aKaonZS );
|
||||
}
|
||||
else if( vec[i]->GetDefinition() == aKaonZS )
|
||||
{
|
||||
if( G4UniformRand() > 0.5 )vec[i]->SetDefinition( aKaonZL );
|
||||
}
|
||||
}
|
||||
if( incidentHasChanged )
|
||||
{
|
||||
theParticleChange.SetNumberOfSecondaries( vecLen+2 );
|
||||
G4DynamicParticle* p0 = new G4DynamicParticle;
|
||||
p0->SetDefinition( currentParticle.GetDefinition() );
|
||||
p0->SetMomentum( currentParticle.GetMomentum() );
|
||||
theParticleChange.AddSecondary( p0 );
|
||||
theParticleChange.SetStatusChange( fStopAndKill );
|
||||
theParticleChange.SetEnergyChange( 0.0 );
|
||||
}
|
||||
else
|
||||
{
|
||||
theParticleChange.SetNumberOfSecondaries( vecLen+1 );
|
||||
G4double p = currentParticle.GetMomentum().mag()/MeV;
|
||||
G4ThreeVector m = currentParticle.GetMomentum();
|
||||
if( p > DBL_MIN )
|
||||
theParticleChange.SetMomentumChange( m.x()/p, m.y()/p, m.z()/p );
|
||||
else
|
||||
theParticleChange.SetMomentumChange( 0.0, 0.0, 0.0 );
|
||||
|
||||
theParticleChange.SetEnergyChange( currentParticle.GetKineticEnergy() );
|
||||
}
|
||||
if( targetParticle.GetMass() > 0.0 ) // targetParticle can be eliminated in TwoBody
|
||||
{
|
||||
G4DynamicParticle *p1 = new G4DynamicParticle;
|
||||
p1->SetDefinition( targetParticle.GetDefinition() );
|
||||
p1->SetMomentum( targetParticle.GetMomentum() );
|
||||
theParticleChange.AddSecondary( p1 );
|
||||
}
|
||||
G4DynamicParticle *p;
|
||||
for( i=0; i<vecLen; ++i )
|
||||
{
|
||||
p = new G4DynamicParticle();
|
||||
p->SetDefinition( vec[i]->GetDefinition() );
|
||||
p->SetMomentum( vec[i]->GetMomentum() );
|
||||
theParticleChange.AddSecondary( p );
|
||||
}
|
||||
}
|
||||
|
||||
/* end of file */
|
||||
|
||||
Reference in New Issue
Block a user