SetParentPolarization

This commit is contained in:
paraiso 2006-03-15 09:31:34 +00:00
parent 299699b906
commit b9697137e5
2 changed files with 748 additions and 0 deletions

View File

@ -0,0 +1,460 @@
//
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. *
// * *
// * This code implementation is the intellectual property of the *
// * 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: G4VDecayChannel.cc,v 1.16 2004/12/02 08:09:00 kurasige Exp $
// GEANT4 tag $Name: geant4-07-00-cand-03 $
//
//
// ------------------------------------------------------------
// GEANT 4 class header file
//
// History: first implementation, based on object model of
// 27 July 1996 H.Kurashige
// 30 May 1997 H.Kurashige
// 23 Mar. 2000 H.Weber : add GetAngularMomentum
// ------------------------------------------------------------
#include "G4ParticleDefinition.hh"
#include "G4ParticleTable.hh"
#include "G4DecayTable.hh"
#include "G4DecayProducts.hh"
#include "G4VDecayChannel.hh"
const G4String G4VDecayChannel::noName = " ";
G4VDecayChannel::G4VDecayChannel(const G4String &aName, G4int Verbose)
:kinematics_name(aName),
rbranch(0.0),
numberOfDaughters(0),
parent_name(0), daughters_name(0),
particletable(0),
parent(0), daughters(0),
parent_mass(0.0), daughters_mass(0),
verboseLevel(Verbose)
{
// set pointer to G4ParticleTable (static and singleton object)
particletable = G4ParticleTable::GetParticleTable();
}
G4VDecayChannel::G4VDecayChannel(const G4String &aName,
const G4String& theParentName,
G4double theBR,
G4int theNumberOfDaughters,
const G4String& theDaughterName1,
const G4String& theDaughterName2,
const G4String& theDaughterName3,
const G4String& theDaughterName4 )
:kinematics_name(aName),
rbranch(theBR),
numberOfDaughters(theNumberOfDaughters),
parent_name(0), daughters_name(0),
particletable(0),
parent(0), daughters(0),
parent_mass(0.0), daughters_mass(0),
verboseLevel(1)
{
// set pointer to G4ParticleTable (static and singleton object)
particletable = G4ParticleTable::GetParticleTable();
// parent name
parent_name = new G4String(theParentName);
// cleate array
daughters_name = new G4String*[numberOfDaughters];
for (G4int index=0;index<numberOfDaughters;index++) daughters_name[index]=0;
// daughters' name
if (numberOfDaughters>0) daughters_name[0] = new G4String(theDaughterName1);
if (numberOfDaughters>1) daughters_name[1] = new G4String(theDaughterName2);
if (numberOfDaughters>2) daughters_name[2] = new G4String(theDaughterName3);
if (numberOfDaughters>3) daughters_name[3] = new G4String(theDaughterName4);
}
G4VDecayChannel::G4VDecayChannel(const G4VDecayChannel &right)
{
kinematics_name = right.kinematics_name;
verboseLevel = right.verboseLevel;
rbranch = right.rbranch;
// copy parent name
parent_name = new G4String(*right.parent_name);
parent = 0;
parent_mass = 0.0;
//create array
numberOfDaughters = right.numberOfDaughters;
if ( numberOfDaughters >0 ) {
daughters_name = new G4String*[numberOfDaughters];
//copy daughters name
for (G4int index=0; index < numberOfDaughters; index++)
{
daughters_name[index] = new G4String(*right.daughters_name[index]);
}
}
//
daughters_mass = 0;
daughters = 0;
// particle table
particletable = G4ParticleTable::GetParticleTable();
}
G4VDecayChannel & G4VDecayChannel::operator=(const G4VDecayChannel &right)
{
if (this != &right) {
kinematics_name = right.kinematics_name;
verboseLevel = right.verboseLevel;
rbranch = right.rbranch;
// copy parent name
parent_name = new G4String(*right.parent_name);
// clear daughters_name array
ClearDaughtersName();
// recreate array
numberOfDaughters = right.numberOfDaughters;
if ( numberOfDaughters >0 ) {
daughters_name = new G4String*[numberOfDaughters];
//copy daughters name
for (G4int index=0; index < numberOfDaughters; index++) {
daughters_name[index] = new G4String(*right.daughters_name[index]);
}
}
}
//
parent = 0;
daughters = 0;
parent_mass = 0.0;
daughters_mass = 0;
// particle table
particletable = G4ParticleTable::GetParticleTable();
return *this;
}
G4VDecayChannel::~G4VDecayChannel()
{
if (parent_name != 0) delete parent_name;
ClearDaughtersName();
if (daughters_mass != 0) delete [] daughters_mass;
}
void G4VDecayChannel::ClearDaughtersName()
{
if ( daughters_name != 0) {
if (numberOfDaughters>0) {
#ifdef G4VERBOSE
if (verboseLevel>1) {
G4cout << "G4VDecayChannel::ClearDaughtersName ";
G4cout << "clear all daughters " << G4endl;
}
#endif
for (G4int index=0; index < numberOfDaughters; index++) {
if (daughters_name[index] != 0) delete daughters_name[index];
}
}
delete [] daughters_name;
daughters_name = 0;
}
//
if (daughters != 0) delete [] daughters;
if (daughters_mass != 0) delete [] daughters_mass;
daughters = 0;
daughters_mass = 0;
numberOfDaughters = 0;
}
void G4VDecayChannel::SetNumberOfDaughters(G4int size)
{
if (size >0) {
// remove old contents
ClearDaughtersName();
// cleate array
daughters_name = new G4String*[size];
for (G4int index=0;index<size;index++) daughters_name[index]=0;
numberOfDaughters = size;
}
}
void G4VDecayChannel::SetDaughter(G4int anIndex,
const G4String &particle_name)
{
// check numberOfDaughters is positive
if (numberOfDaughters<=0) {
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::SetDaughter: ";
G4cout << "Number of daughters is not defined" << G4endl;
}
#endif
return;
}
// check existence of daughters_name array
if (daughters_name == 0) {
// cleate array
daughters_name = new G4String*[numberOfDaughters];
for (G4int index=0;index<numberOfDaughters;index++) {
daughters_name[index]=0;
}
}
// check an index
if ( (anIndex<0) || (anIndex>=numberOfDaughters) ) {
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::SetDaughter";
G4cout << "index out of range " << anIndex << G4endl;
}
#endif
} else {
// delete the old name if it exists
if (daughters_name[anIndex]!=0) delete daughters_name[anIndex];
// fill the name
daughters_name[anIndex] = new G4String(particle_name);
// refill the array of daughters[] if it exists
if (daughters != 0) FillDaughters();
#ifdef G4VERBOSE
if (verboseLevel>1) {
G4cout << "G4VDecayChannel::SetDaughter[" << anIndex <<"] :";
G4cout << daughters_name[anIndex] << ":" << *daughters_name[anIndex]<<G4endl;
}
#endif
}
}
void G4VDecayChannel::SetDaughter(G4int anIndex, const G4ParticleDefinition * parent_type)
{
if (parent_type != 0) SetDaughter(anIndex, parent_type->GetParticleName());
}
void G4VDecayChannel::FillDaughters()
{
G4int index;
#ifdef G4VERBOSE
if (verboseLevel>1) G4cout << "G4VDecayChannel::FillDaughters()" <<G4endl;
#endif
if (daughters != 0) delete [] daughters;
// parent mass
if (parent == 0) FillParent();
G4double parentmass = parent->GetPDGMass();
//
G4double sumofdaughtermass = 0.0;
if ((numberOfDaughters <=0) || (daughters_name == 0) ){
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::FillDaughters ";
G4cout << "[ " << parent->GetParticleName() << " ]";
G4cout << "numberOfDaughters is not defined yet";
}
#endif
daughters = 0;
G4Exception("G4VDecayChannel::FillDaughters");
}
//create and set the array of pointers to daughter particles
daughters = new G4ParticleDefinition*[numberOfDaughters];
if (daughters_mass != 0) delete [] daughters_mass;
daughters_mass = new G4double[numberOfDaughters];
// loop over all daughters
for (index=0; index < numberOfDaughters; index++) {
if (daughters_name[index] == 0) {
// daughter name is not defined
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::FillDaughters ";
G4cout << "[ " << parent->GetParticleName() << " ]";
G4cout << index << "-th daughter is not defined yet" << G4endl;
}
#endif
daughters[index] = 0;
G4Exception("G4VDecayChannel::FillDaughters");
}
//search daughter particles in the particle table
daughters[index] = particletable->FindParticle(*daughters_name[index]);
if (daughters[index] == 0) {
// can not find the daughter particle
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::FillDaughters ";
G4cout << "[ " << parent->GetParticleName() << " ]";
G4cout << index << ":" << *daughters_name[index];
G4cout << " is not defined !!" << G4endl;
G4cout << " The BR of this decay mode is set to zero " << G4endl;
}
#endif
SetBR(0.0);
return;
}
#ifdef G4VERBOSE
if (verboseLevel>1) {
G4cout << index << ":" << *daughters_name[index];
G4cout << ":" << daughters[index] << G4endl;
}
#endif
daughters_mass[index] = daughters[index]->GetPDGMass();
sumofdaughtermass += daughters[index]->GetPDGMass();
} // end loop over all daughters
// check sum of daghter mass
G4double widthMass = parent->GetPDGWidth();
if ( (parent->GetParticleType() != "nucleus") &&
(sumofdaughtermass > parentmass + 5*widthMass) ){
// !!! illegal mass !!!
#ifdef G4VERBOSE
if (GetVerboseLevel()>0) {
G4cout << "G4VDecayChannel::FillDaughters ";
G4cout << "[ " << parent->GetParticleName() << " ]";
G4cout << " Energy/Momentum conserevation breaks " <<G4endl;
if (GetVerboseLevel()>1) {
G4cout << " parent:" << *parent_name;
G4cout << " mass:" << parentmass/GeV << "[GeV/c/c]" <<G4endl;
for (index=0; index < numberOfDaughters; index++){
G4cout << " daughter " << index << ":" << *daughters_name[index];
G4cout << " mass:" << daughters[index]->GetPDGMass()/GeV;
G4cout << "[GeV/c/c]" <<G4endl;
}
}
}
#endif
}
}
void G4VDecayChannel::FillParent()
{
if (parent_name == 0) {
// parent name is not defined
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::FillParent ";
G4cout << ": parent name is not defined !!" << G4endl;
}
#endif
parent = 0;
G4Exception("G4VDecayChannel::FillParent");
}
// search parent particle in the particle table
parent = particletable->FindParticle(*parent_name);
if (parent == 0) {
// parent particle does not exist
#ifdef G4VERBOSE
if (verboseLevel>0) {
G4cout << "G4VDecayChannel::FillParent ";
G4cout << *parent_name << " does not exist !!" << G4endl;
}
#endif
G4Exception("G4VDecayChannel::FillParent");
}
parent_mass = parent->GetPDGMass();
}
void G4VDecayChannel::SetParent(const G4ParticleDefinition * parent_type)
{
if (parent_type != 0) SetParent(parent_type->GetParticleName());
}
G4int G4VDecayChannel::GetAngularMomentum()
{
// determine angular momentum
// fill pointers to daughter particles if not yet set
if (daughters == 0) FillDaughters();
const G4int PiSpin = parent->GetPDGiSpin();
const G4int PParity = parent->GetPDGiParity();
if (2==numberOfDaughters) { // up to now we can only handle two particle decays
const G4int D1iSpin = daughters[0]->GetPDGiSpin();
const G4int D1Parity = daughters[0]->GetPDGiParity();
const G4int D2iSpin = daughters[1]->GetPDGiSpin();
const G4int D2Parity = daughters[1]->GetPDGiParity();
const G4int MiniSpin = std::abs (D1iSpin - D2iSpin);
const G4int MaxiSpin = D1iSpin + D2iSpin;
const G4int lMax = (PiSpin+D1iSpin+D2iSpin)/2; // l is allways int
G4int lMin;
#ifdef G4VERBOSE
if (verboseLevel>1) {
G4cout << "iSpin: " << PiSpin << " -> " << D1iSpin << " + " << D2iSpin << G4endl;
G4cout << "2*jmin, 2*jmax, lmax " << MiniSpin << " " << MaxiSpin << " " << lMax << G4endl;
}
#endif
for (G4int j=MiniSpin; j<=MaxiSpin; j+=2){ // loop over all possible spin couplings
lMin = std::abs(PiSpin-j)/2;
#ifdef G4VERBOSE
if (verboseLevel>1)
G4cout << "-> checking 2*j=" << j << G4endl;
#endif
for (G4int l=lMin; l<=lMax; l++) {
#ifdef G4VERBOSE
if (verboseLevel>1)
G4cout << " checking l=" << l << G4endl;
#endif
if (l%2==0) {
if (PParity == D1Parity*D2Parity) { // check parity for this l
return l;
}
} else {
if (PParity == -1*D1Parity*D2Parity) { // check parity for this l
return l;
}
}
}
}
} else {
G4Exception ("G4VDecayChannel::GetAngularMomentum: Sorry, can't handle 3 particle decays (up to now)");
}
G4Exception ("G4VDecayChannel::GetAngularMomentum: Can't find angular momentum for this decay!");
return 0;
}
void G4VDecayChannel::DumpInfo()
{
G4cout << " BR: " << rbranch << " [" << kinematics_name << "]";
G4cout << " : " ;
for (G4int index=0; index < numberOfDaughters; index++)
{
if(daughters_name[index] != 0) {
G4cout << " " << *(daughters_name[index]);
} else {
G4cout << " not defined ";
}
}
G4cout << G4endl;
}
const G4String& G4VDecayChannel::GetNoName() const
{
return noName;
}

View File

@ -0,0 +1,288 @@
//
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. *
// * *
// * This code implementation is the intellectual property of the *
// * 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: G4VDecayChannel.hh,v 1.11 2004/12/02 08:08:58 kurasige Exp $
// GEANT4 tag $Name: geant4-07-00-cand-03 $
//
//
// ------------------------------------------------------------
// GEANT 4 class header file
//
// History: first implementation, based on object model of
// 27 July 1996 H.Kurashige
// 30 May 1997 H.Kurashige
// 23 Mar. 2000 H.Weber : add GetAngularMomentum()
// ------------------------------------------------------------
#ifndef G4VDecayChannel_h
#define G4VDecayChannel_h 1
#include "G4ios.hh"
#include "globals.hh"
#include <cmath>
#include "G4ThreeVector.hh"
class G4ParticleDefinition;
class G4DecayProducts;
class G4ParticleTable;
class G4VDecayChannel
{
// Class Description
// This class is a abstract class to describe decay kinematics
//
public:
//Constructors
G4VDecayChannel(const G4String &aName, G4int Verbose = 1);
G4VDecayChannel(const G4String &aName,
const G4String& theParentName,
G4double theBR,
G4int theNumberOfDaughters,
const G4String& theDaughterName1,
const G4String& theDaughterName2 = "",
const G4String& theDaughterName3 = "",
const G4String& theDaughterName4 = "" );
// Destructor
virtual ~G4VDecayChannel();
private:
// copy constructor and assignment operatotr
G4VDecayChannel(const G4VDecayChannel &);
G4VDecayChannel & operator=(const G4VDecayChannel &);
public:
// equality operators
G4int operator==(const G4VDecayChannel &right) const {return (this == &right);}
G4int operator!=(const G4VDecayChannel &right) const {return (this != &right);}
// less-than operator is defined for G4DecayTable
G4int operator<(const G4VDecayChannel &right) const;
public: // With Description
virtual G4DecayProducts* DecayIt(G4double parentMass = -1.0) = 0;
public: // With Description
//get kinematics name
G4String GetKinematicsName() const;
//get branching ratio
G4double GetBR() const;
//get number of daughter particles
G4int GetNumberOfDaughters() const;
//get the pointer to the parent particle
G4ParticleDefinition * GetParent();
//get the pointer to a daughter particle
G4ParticleDefinition * GetDaughter(G4int anIndex);
//get the angular momentum of the decay
G4int GetAngularMomentum();
//get the name of the parent particle
const G4String& GetParentName() const;
//get the name of a daughter particle
const G4String& GetDaughterName(G4int anIndex) const;
// get mass of parent
G4double GetParentMass() const;
G4double GetDaughterMass(G4int anIndex) const;
G4ThreeVector GetParentPolarization();
//set the parent particle (by name or by pointer)
void SetParent(const G4ParticleDefinition * particle_type);
void SetParent(const G4String &particle_name);
//set branching ratio
void SetBR(G4double value);
//set number of daughter particles
void SetNumberOfDaughters(G4int value);
//set a daughter particle (by name or by pointer)
void SetDaughter(G4int anIndex,
const G4ParticleDefinition * particle_type);
void SetDaughter(G4int anIndex,
const G4String &particle_name);
void SetParentPolarization(G4ThreeVector polar);
protected:
// kinematics name
G4String kinematics_name;
// branching ratio [0.0 - 1.0]
G4double rbranch;
// number of daughters
G4int numberOfDaughters;
// parent particle
G4String* parent_name;
//daughter particles
G4String** daughters_name;
protected: // With Description
// celar daughters array
void ClearDaughtersName();
protected:
// pointer to particle table
G4ParticleTable* particletable;
// temporary buffers of pointers to G4ParticleDefinition
G4ParticleDefinition* parent;
G4ParticleDefinition** daughters;
// parent mass
G4double parent_mass;
G4double* daughters_mass;
//parent theParentPolarization
G4ThreeVector theParentPolarization;
// fill daughters array
void FillDaughters();
// fill parent
void FillParent();
public: // With Description
void SetVerboseLevel(G4int value);
G4int GetVerboseLevel() const;
void DumpInfo();
private:
const G4String& GetNoName() const;
private:
// controle flag for output message
G4int verboseLevel;
// 0: Silent
// 1: Warning message
// 2: More
static const G4String noName;
};
inline
G4int G4VDecayChannel::operator<(const G4VDecayChannel &right) const
{
return (this->rbranch < right.rbranch);
}
inline
G4ParticleDefinition* G4VDecayChannel::GetDaughter(G4int anIndex)
{
//pointers to daughter particles are filled, if they are not set yet
if (daughters == 0) FillDaughters();
//get the pointer to a daughter particle
if ( (anIndex>=0) && (anIndex<numberOfDaughters) ) {
return daughters[anIndex];
} else {
if (verboseLevel>0)
G4cout << "G4VDecayChannel::GetDaughter index out of range "<<anIndex<<G4endl;
return 0;
}
}
inline
const G4String& G4VDecayChannel::GetDaughterName(G4int anIndex) const
{
if ( (anIndex>=0) && (anIndex<numberOfDaughters) ) {
return *daughters_name[anIndex];
} else {
if (verboseLevel>0){
G4cout << "G4VDecayChannel::GetDaughterName ";
G4cout << "index out of range " << anIndex << G4endl;
}
return GetNoName();
}
}
inline
G4double G4VDecayChannel::GetDaughterMass(G4int anIndex) const
{
if ( (anIndex>=0) && (anIndex<numberOfDaughters) ) {
return daughters_mass[anIndex];
} else {
if (verboseLevel>0){
G4cout << "G4VDecayChannel::GetDaughterMass ";
G4cout << "index out of range " << anIndex << G4endl;
}
return 0.0;
}
}
inline
G4ParticleDefinition* G4VDecayChannel::GetParent()
{
//the pointer to the parent particle is filled, if it is not set yet
if (parent == 0) FillParent();
//get the pointer to the parent particle
return parent;
}
inline
const G4String& G4VDecayChannel::GetParentName() const
{
return *parent_name;
}
inline
G4double G4VDecayChannel::GetParentMass() const
{
return parent_mass;
}
inline
void G4VDecayChannel::SetParent(const G4String &particle_name)
{
if (parent_name != 0) delete parent_name;
parent_name = new G4String(particle_name);
parent = 0;
}
inline
G4int G4VDecayChannel::GetNumberOfDaughters() const
{
return numberOfDaughters;
}
inline
G4String G4VDecayChannel::GetKinematicsName() const { return kinematics_name; }
inline
void G4VDecayChannel::SetBR(G4double value){ rbranch = value; }
inline
G4double G4VDecayChannel::GetBR() const { return rbranch; }
inline
void G4VDecayChannel::SetVerboseLevel(G4int value){ verboseLevel = value; }
inline
G4int G4VDecayChannel::GetVerboseLevel() const { return verboseLevel; }
inline G4ThreeVector G4VDecayChannel::GetParentPolarization(){return theParentPolarization;}
inline void G4VDecayChannel::SetParentPolarization(G4ThreeVector polar){theParentPolarization=polar;}
#endif