G4ParticleGunMessenger.cc

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// G4ParticleGunMessenger class implementation
//
// Author: Makoto Asai, 1997
// --------------------------------------------------------------------
 
#include "G4ParticleGunMessenger.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleGun.hh"
#include "G4Geantino.hh"
#include "G4ThreeVector.hh"
#include "G4ParticleTable.hh"
#include "G4IonTable.hh"
#include "G4UIdirectory.hh"
#include "G4UIcmdWithoutParameter.hh"
#include "G4UIcmdWithAString.hh"
#include "G4UIcmdWithADoubleAndUnit.hh"
#include "G4UIcmdWith3Vector.hh"
#include "G4UIcmdWith3VectorAndUnit.hh"
#include "G4UIcmdWithAnInteger.hh"
#include "G4ios.hh"
#include "G4Tokenizer.hh"
#include "G4IonTable.hh"
 
G4ParticleGunMessenger::G4ParticleGunMessenger(G4ParticleGun* fPtclGun)
  : fParticleGun(fPtclGun)
{
  particleTable = G4ParticleTable::GetParticleTable();
 
  gunDirectory = new G4UIdirectory("/gun/");
  gunDirectory->SetGuidance("Particle Gun control commands.");
 
  listCmd = new G4UIcmdWithoutParameter("/gun/List",this);
  listCmd->SetGuidance("List available particles.");
  listCmd->SetGuidance(" Invoke G4ParticleTable.");
 
  particleCmd = new G4UIcmdWithAString("/gun/particle",this);
  particleCmd->SetGuidance("Set particle to be generated.");
  particleCmd->SetGuidance(" (geantino is default)");
  particleCmd->SetGuidance(" (ion can be specified for shooting ions)");
  particleCmd->SetParameterName("particleName",true);
  particleCmd->SetDefaultValue("geantino");
  G4String candidateList; 
  G4ParticleTable::G4PTblDicIterator* itr = particleTable->GetIterator();
  itr->reset();
  while( (*itr)() )
  {
    G4ParticleDefinition* pd = itr->value();
    if( !(pd->IsShortLived()) || pd->GetDecayTable() != nullptr )
    {
      candidateList += pd->GetParticleName();
      candidateList += " ";
    }
  }
  candidateList += "ion ";
  particleCmd->SetCandidates(candidateList);
 
  directionCmd = new G4UIcmdWith3Vector("/gun/direction",this);
  directionCmd->SetGuidance("Set momentum direction.");
  directionCmd->SetGuidance(" Direction needs not to be a unit vector.");
  directionCmd->SetParameterName("ex","ey","ez",true,true); 
  directionCmd->SetRange("ex != 0 || ey != 0 || ez != 0");
  
  energyCmd = new G4UIcmdWithADoubleAndUnit("/gun/energy",this);
  energyCmd->SetGuidance("Set kinetic energy.");
  energyCmd->SetParameterName("Energy",true,true);
  energyCmd->SetDefaultUnit("GeV");
  //energyCmd->SetUnitCategory("Energy");
  //energyCmd->SetUnitCandidates("eV keV MeV GeV TeV");
 
  momCmd = new G4UIcmdWith3VectorAndUnit("/gun/momentum",this);
  momCmd->SetGuidance("Set momentum. This command is equivalent to two commands");
  momCmd->SetGuidance(" /gun/direction and /gun/momentumAmp");
  momCmd->SetParameterName("px","py","pz",true,true); 
  momCmd->SetRange("px != 0 || py != 0 || pz != 0");
  momCmd->SetDefaultUnit("GeV");
 
  momAmpCmd = new G4UIcmdWithADoubleAndUnit("/gun/momentumAmp",this);
  momAmpCmd->SetGuidance("Set absolute value of momentum.");
  momAmpCmd->SetGuidance(" Direction should be set by /gun/direction command.");
  momAmpCmd->SetGuidance(" This command should be used alternatively with /gun/energy.");
  momAmpCmd->SetParameterName("Momentum",true,true);
  momAmpCmd->SetDefaultUnit("GeV");
 
  positionCmd = new G4UIcmdWith3VectorAndUnit("/gun/position",this);
  positionCmd->SetGuidance("Set starting position of the particle.");
  positionCmd->SetParameterName("X","Y","Z",true,true);
  positionCmd->SetDefaultUnit("cm");
  // positionCmd->SetUnitCategory("Length");
  // positionCmd->SetUnitCandidates("microm mm cm m km");
 
  timeCmd = new G4UIcmdWithADoubleAndUnit("/gun/time",this);
  timeCmd->SetGuidance("Set initial time of the particle.");
  timeCmd->SetParameterName("t0",true,true);
  timeCmd->SetDefaultUnit("ns");
  // timeCmd->SetUnitCategory("Time");
  // timeCmd->SetUnitCandidates("ns ms s");
  
  polCmd = new G4UIcmdWith3Vector("/gun/polarization",this);
  polCmd->SetGuidance("Set polarization.");
  polCmd->SetParameterName("Px","Py","Pz",true,true); 
  polCmd->SetRange("Px>=-1.&&Px<=1.&&Py>=-1.&&Py<=1.&&Pz>=-1.&&Pz<=1.");
 
  numberCmd = new G4UIcmdWithAnInteger("/gun/number",this);
  numberCmd->SetGuidance("Set number of particles to be generated.");
  numberCmd->SetParameterName("N",true,true);
  numberCmd->SetRange("N>0");
 
  ionCmd = new G4UIcommand("/gun/ion",this);
  ionCmd->SetGuidance("Set properties of ion to be generated.");
  ionCmd->SetGuidance("[usage] /gun/ion Z A [Q E flb]");
  ionCmd->SetGuidance("        Z:(int) AtomicNumber");
  ionCmd->SetGuidance("        A:(int) AtomicMass");
  ionCmd->SetGuidance("        Q:(int) Charge of Ion (in unit of e)");
  ionCmd->SetGuidance("        E:(double) Excitation energy (in keV)");
  ionCmd->SetGuidance("        flb:(char) Floating level base");
  
  G4UIparameter* param;
  param = new G4UIparameter("Z",'i',false);
  ionCmd->SetParameter(param);
  param = new G4UIparameter("A",'i',false);
  ionCmd->SetParameter(param);
  param = new G4UIparameter("Q",'i',true);
  param->SetDefaultValue(-1);
  ionCmd->SetParameter(param);
  param = new G4UIparameter("E",'d',true);
  param->SetDefaultValue(0.0);
  ionCmd->SetParameter(param);
  param = new G4UIparameter("flb",'c',true);
  param->SetDefaultValue("noFloat");
  param->SetParameterCandidates("noFloat X Y Z U V W R S T A B C D E");
  ionCmd->SetParameter(param);
 
  ionLvlCmd = new G4UIcommand("/gun/ionL",this);
  ionLvlCmd->SetGuidance("THIS COMMAND IS DEPRECATED and will be removed in future releases.");
  ionLvlCmd->SetGuidance(" Use /gun/ion instead.");
  ionLvlCmd->SetGuidance(" Set properties of ion to be generated.");
  ionLvlCmd->SetGuidance(" [usage] /gun/ionL Z A [Q I]");
  ionLvlCmd->SetGuidance("        Z:(int) AtomicNumber");
  ionLvlCmd->SetGuidance("        A:(int) AtomicMass");
  ionLvlCmd->SetGuidance("        Q:(int) Charge of Ion (in unit of e)");
  ionLvlCmd->SetGuidance("        I:(int) Level number of metastable state (0 = ground)");
 
  G4UIparameter* paraml;
  paraml = new G4UIparameter("Z",'i',false);
  ionLvlCmd->SetParameter(paraml);
  paraml = new G4UIparameter("A",'i',false);
  ionLvlCmd->SetParameter(paraml);
  paraml = new G4UIparameter("Q",'i',true);
  paraml->SetDefaultValue(-1);
  ionLvlCmd->SetParameter(paraml);
  paraml = new G4UIparameter("I",'i',true);
  paraml->SetDefaultValue("0");
  ionLvlCmd->SetParameter(paraml);
 
  // Set initial value to G4ParticleGun
  //
  fParticleGun->SetParticleDefinition( G4Geantino::Geantino() );
  fParticleGun->SetParticleMomentumDirection( G4ThreeVector(1.0,0.0,0.0) );
  fParticleGun->SetParticleEnergy( 1.0*GeV );
  fParticleGun->SetParticlePosition(G4ThreeVector(0.0*cm, 0.0*cm, 0.0*cm));
  fParticleGun->SetParticleTime( 0.0*ns );
}
 
G4ParticleGunMessenger::~G4ParticleGunMessenger()
{
  delete listCmd;
  delete particleCmd;
  delete directionCmd;
  delete energyCmd;
  delete momCmd;
  delete momAmpCmd;
  delete positionCmd;
  delete timeCmd;
  delete polCmd;
  delete numberCmd;
  delete ionCmd;
  delete ionLvlCmd;
  delete gunDirectory;
}
 
void G4ParticleGunMessenger::
SetNewValue(G4UIcommand* command, G4String newValues)
{
  G4ExceptionDescription ed;
  if (command==listCmd)
  {
    particleTable->DumpTable();
  }
  else if (command==particleCmd)
  {
    if (newValues =="ion")
    {
      fShootIon = true;
    }
    else
    {
      fShootIon = false;
      G4ParticleDefinition* pd = particleTable->FindParticle(newValues);
      if(pd != nullptr)
      {
        fParticleGun->SetParticleDefinition( pd );
      }
      else
      {
        ed << "Particle [" << newValues << "] is not found.";
        command->CommandFailed(ed);
      }
    }
 
  } else if( command==directionCmd )
  { fParticleGun->SetParticleMomentumDirection(directionCmd->GetNew3VectorValue(newValues)); }
  else if( command==energyCmd )
  { fParticleGun->SetParticleEnergy(energyCmd->GetNewDoubleValue(newValues)); }
  else if( command==momCmd )
  { fParticleGun->SetParticleMomentum(momCmd->GetNew3VectorValue(newValues)); }
  else if( command==momAmpCmd )
  { fParticleGun->SetParticleMomentum(momAmpCmd->GetNewDoubleValue(newValues)); }
  else if( command==positionCmd )
  { fParticleGun->SetParticlePosition(positionCmd->GetNew3VectorValue(newValues)); }
  else if( command==timeCmd )
  { fParticleGun->SetParticleTime(timeCmd->GetNewDoubleValue(newValues)); }
  else if( command==polCmd )
  { fParticleGun->SetParticlePolarization(polCmd->GetNew3VectorValue(newValues)); }
  else if( command==numberCmd )
  { fParticleGun->SetNumberOfParticles(numberCmd->GetNewIntValue(newValues)); }
  else if( command==ionCmd ) 
  {
    if (fShootIon)
    {
      IonCommand(newValues);
    }
    else
    {
      ed << "Set /gun/particle to ion before using /gun/ion command";
      command->CommandFailed(ed);
    }
  }
  else if( command==ionLvlCmd ) 
  {
    G4ExceptionDescription depWarn; 
    depWarn << "\nCommand /gun/ionL is deprecated and will be removed in future releases.\n"
            << "Use /gun/ion instead.\n";
    G4Exception("G4ParticleGunMessenger::SetNewValue", "IonLWarn",
                JustWarning, depWarn);
 
    if (fShootIon)
    {
      IonLevelCommand(newValues);
    }
    else
    {
      ed << "Set /gun/particle to ion before using /gun/ion command";
      command->CommandFailed(ed);
    }
  }
}
 
G4String G4ParticleGunMessenger::GetCurrentValue(G4UIcommand* command)
{
  G4String cv;
  
  if( command==directionCmd )
  { cv = directionCmd->ConvertToString(fParticleGun->GetParticleMomentumDirection()); }
  else if( command==particleCmd )
  { cv = fParticleGun->GetParticleDefinition()->GetParticleName(); }
  else if( command==energyCmd )
  {
    G4double ene = fParticleGun->GetParticleEnergy();
    if(ene == 0.)
    { G4cerr << " G4ParticleGun:  was defined in terms of momentum." << G4endl; }
    else
    { cv = energyCmd->ConvertToString(ene,"GeV"); }
  }
  else if( command==momCmd || command==momAmpCmd )
  {
    G4double mom = fParticleGun->GetParticleMomentum();
    if(mom == 0.)
    {
      G4cerr << " G4ParticleGun:  was defined in terms of kinetic energy."
             << G4endl;
    }
    else
    {
      if( command==momCmd )
      { cv = momCmd->ConvertToString(mom*(fParticleGun->GetParticleMomentumDirection()),"GeV"); }
      else
      { cv = momAmpCmd->ConvertToString(mom,"GeV"); }
    }
  }
  else if( command==positionCmd )
  { cv = positionCmd->ConvertToString(fParticleGun->GetParticlePosition(),"cm"); }
  else if( command==timeCmd )
  { cv = timeCmd->ConvertToString(fParticleGun->GetParticleTime(),"ns"); }
  else if( command==polCmd )
  { cv = polCmd->ConvertToString(fParticleGun->GetParticlePolarization()); }
  else if( command==numberCmd )
  { cv = numberCmd->ConvertToString(fParticleGun->GetNumberOfParticles()); }
  else if( command==ionCmd )
  { 
    if (fShootIon)
    {
      cv = ItoS(fAtomicNumber) + " " + ItoS(fAtomicMass) + " ";
      cv += ItoS(fIonCharge);
    }
    else
    {
      cv = "";
    }  
  }    
  return cv;
}
 
void G4ParticleGunMessenger::IonLevelCommand(const G4String& newValues)
{
  G4Tokenizer next( newValues );
 
  // Check argument
  //
  fAtomicNumber = StoI(next());
  fAtomicMass = StoI(next());
  G4String sQ = next();
  if (sQ.empty() || StoI(sQ)<0)
  {
    fIonCharge = fAtomicNumber;
  }
  else
  {
    fIonCharge = StoI(sQ);
  }
  sQ = next();
  if (sQ.empty())
  {
    fIonEnergyLevel = 0;
  }
  else
  {
    fIonEnergyLevel = StoI(sQ);
  }
  G4ParticleDefinition* ion = G4IonTable::GetIonTable()
      ->GetIon(fAtomicNumber,fAtomicMass,fIonEnergyLevel);
  if (ion == nullptr)
  {
    G4ExceptionDescription ed;
    ed << "Ion with Z = " << fAtomicNumber << ", A = " << fAtomicMass
       << ", I = " << fIonEnergyLevel << " is not defined ";
    ionLvlCmd->CommandFailed(ed);
  }
  else
  {
    fParticleGun->SetParticleDefinition(ion);
    fParticleGun->SetParticleCharge(fIonCharge*eplus);
  }
}
 
void G4ParticleGunMessenger::IonCommand(const G4String& newValues)
{
  G4Tokenizer next( newValues );
 
  // Check argument
  //
  fAtomicNumber = StoI(next());
  fAtomicMass = StoI(next());
  fIonCharge = fAtomicNumber;
  fIonExciteEnergy = 0.0;
  fIonFloatingLevelBase = '\0';
  G4String sQ = next();
  if (!(sQ.empty()))
  {
    if (StoI(sQ)>=0)
    fIonCharge = StoI(sQ);
 
    sQ = next();
    if (!(sQ.empty()))
    {
      fIonExciteEnergy = StoD(sQ) * keV;
 
      sQ = next();
      if (sQ.empty()||sQ=="noFloat")
      { fIonFloatingLevelBase = '\0'; }
      else
      { fIonFloatingLevelBase = sQ[(std::size_t)0]; }
    }
  }
  G4ParticleDefinition* ion = G4IonTable::GetIonTable()
    ->GetIon(fAtomicNumber,fAtomicMass,fIonExciteEnergy,fIonFloatingLevelBase);
  if (ion==nullptr)
  {
    G4ExceptionDescription ed;
    ed << "Ion with Z=" << fAtomicNumber;
    ed << " A=" << fAtomicMass << "is not defined";    
    ionCmd->CommandFailed(ed);
  }
  else
  {
    fParticleGun->SetParticleDefinition(ion);
    fParticleGun->SetParticleCharge(fIonCharge*eplus);
  }
}