G4INCLParticleSpecies.cc

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//
// INCL++ intra-nuclear cascade model
// Alain Boudard, CEA-Saclay, France
// Joseph Cugnon, University of Liege, Belgium
// Jean-Christophe David, CEA-Saclay, France
// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
// Sylvie Leray, CEA-Saclay, France
// Davide Mancusi, CEA-Saclay, France
//
#define INCLXX_IN_GEANT4_MODE 1

#include "globals.hh"

/*
 * G4INCLParticleSpecies.cc
 *
 *  \date Nov 25, 2011
 * \author Davide Mancusi
 */

#include "G4INCLParticleSpecies.hh"
#include "G4INCLParticleTable.hh"
#include <algorithm>
#include <cctype>
#include <sstream>
#include <algorithm>

namespace G4INCL {

  ParticleSpecies::ParticleSpecies(std::string const &pS) {
    // Normalise the string to lower case
    if(pS=="p" || pS=="proton") {
      theA = 1;
      theZ = 1;
      theS = 0;
      theType = G4INCL::Proton;
    } else if(pS=="n" || pS=="neutron") {
      theA = 1;
      theZ = 0;
      theS = 0;
      theType = G4INCL::Neutron;
    } else if(pS=="delta++" || pS=="deltaplusplus") {
      theA = 1;
      theZ = 2;
      theS = 0;
      theType = G4INCL::DeltaPlusPlus;
    } else if(pS=="delta+" || pS=="deltaplus") {
      theA = 1;
      theZ = 1;
      theS = 0;
      theType = G4INCL::DeltaPlus;
    } else if(pS=="delta0" || pS=="deltazero") {
      theA = 1;
      theZ = 0;
      theS = 0;
      theType = G4INCL::DeltaZero;
    } else if(pS=="delta-" || pS=="deltaminus") {
      theA = 1;
      theZ = -1;
      theS = 0;
      theType = G4INCL::DeltaMinus;
    } else if(pS=="pi+" || pS=="pion+" || pS=="piplus" || pS=="pionplus") {
      theA = 0;
      theZ = 1;
      theS = 0;
      theType = G4INCL::PiPlus;
    } else if(pS=="pi0" || pS=="pion0" || pS=="pizero" || pS=="pionzero") {
      theA = 0;
      theZ = 0;
      theS = 0;
      theType = G4INCL::PiZero;
    } else if(pS=="pi-" || pS=="pion-" || pS=="piminus" || pS=="pionminus") {
      theA = 0;
      theZ = -1;
      theS = 0;
      theType = G4INCL::PiMinus;
    } else if(pS=="lambda" || pS=="l" || pS=="l0")  {
      theA = 1;
      theZ = 0;
      theS = -1;
      theType = G4INCL::Lambda;
    } else if(pS=="s+" || pS=="sigma+" || pS=="sigmaplus")  {
      theA = 1;
      theZ = 1;
      theS = -1;
      theType = G4INCL::SigmaPlus;
    } else if(pS=="s0" || pS=="sigma0" || pS=="sigmazero")  {
      theA = 1;
      theZ = 0;
      theS = -1;
      theType = G4INCL::SigmaZero;
    } else if(pS=="s-" || pS=="sigma-" || pS=="sigmaminus")  { //Sm = Samarium
      theA = 1;
      theZ = -1;
      theS = -1;
      theType = G4INCL::SigmaMinus;
    } else if(pS=="k+" || pS=="kaon+" || pS=="kplus" || pS=="kaonplus") {
      theA = 0;
      theZ = 1;
      theS = 1;
      theType = G4INCL::KPlus;
    } else if(pS=="k0" || pS=="kaon0" || pS=="kzero" || pS=="kaonzero") {
      theA = 0;
      theZ = 0;
      theS = 1;
      theType = G4INCL::KZero;
    } else if(pS=="k0b" || pS=="kzb" || pS=="kaon0bar" || pS=="kzerobar" || pS=="kaonzerobar") {
      theA = 0;
      theZ = 0;
      theS = -1;
      theType = G4INCL::KZeroBar;
    } else if(pS=="k-" || pS=="kaon-" || pS=="kminus" || pS=="kaonminus") {
      theA = 0;
      theZ = -1;
      theS = -1;
      theType = G4INCL::KMinus;
    } else if(pS=="k0s" || pS=="kshort" || pS=="ks" || pS=="kaonshort") {
      theA = 0;
      theZ = 0;
      theS = -99;
      theType = G4INCL::KShort;
    } else if(pS=="k0l" || pS=="klong" || pS=="kl" || pS=="kaonlong") {
      theA = 0;
      theZ = 0;
      theS = 99;
      theType = G4INCL::KLong;
    } else if(pS=="d" || pS=="deuteron") {
      theA = 2;
      theZ = 1;
      theS = 0;
      theType = G4INCL::Composite;
    } else if(pS=="t" || pS=="triton") {
      theA = 3;
      theZ = 1;
      theS = 0;
      theType = G4INCL::Composite;
    } else if(pS=="a" || pS=="alpha") {
      theA = 4;
      theZ = 2;
      theS = 0;
      theType = G4INCL::Composite;
    } else if(pS=="eta") {
      theA = 0;
      theZ = 0;
      theS = 0;
      theType = G4INCL::Eta;
    } else if(pS=="omega") {
      theA = 0;
      theZ = 0;
      theS = 0;
      theType = G4INCL::Omega;
    } else if(pS=="etaprime" || pS=="etap") {
      theA = 0;
      theZ = 0;
      theS = 0;
      theType = G4INCL::EtaPrime;
    } else if(pS=="photon") {
      theA = 0;
      theZ = 0;
      theS = 0;
      theType = G4INCL::Photon;
    } else
      parseNuclide(pS);
  }

  ParticleSpecies::ParticleSpecies(ParticleType const t) :
    theType(t),
    theA(ParticleTable::getMassNumber(theType)),
    theZ(ParticleTable::getChargeNumber(theType)),
    theS(ParticleTable::getStrangenessNumber(theType))
  {}

  ParticleSpecies::ParticleSpecies(const G4int A, const G4int Z) :
    theType(Composite),
    theA(A),
    theZ(Z),
    theS(0)
  {}

  ParticleSpecies::ParticleSpecies(const G4int A, const G4int Z, const G4int S) :
    theType(Composite),
    theA(A),
    theZ(Z),
    theS(S)
  {}

  void ParticleSpecies::parseNuclide(std::string const &pS) {
    theType = Composite;

    // Allowed characters
    const std::string separators("-_");
    std::string allowed("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
    allowed += separators;

    // There must be at least one character
    if(pS.find_first_not_of(allowed)!=std::string::npos) {
      // Malformed input string
      // Setting unknown particle species
      (*this) = ParticleSpecies(UnknownParticle);
      return;
    }
    if(pS.size()<1) {
      // Malformed input string
      // Setting unknown particle species
      (*this) = ParticleSpecies(UnknownParticle);
      return;
    }

    std::size_t firstSeparator = pS.find_first_of(separators);
    std::size_t lastSeparator = pS.find_last_of(separators);
    if(firstSeparator!=std::string::npos && firstSeparator!=lastSeparator) {
      // Several separators in malformed input string
      // Setting unknown particle species
      (*this) = ParticleSpecies(UnknownParticle);
      return;
    }

    // Identify the type of the first character
    G4int (*predicate)(G4int);
    G4bool startsWithAlpha = std::isalpha(pS.at(0));
    if(startsWithAlpha) {
      predicate=std::isdigit;
    } else if(std::isdigit(pS.at(0))) {
      predicate=std::isalpha;
    } else {
      // Non-alphanumeric character in string
      // Setting unknown particle species
      (*this) = ParticleSpecies(UnknownParticle);
      return;
    }

    G4bool hasIsotope = true;
    size_t endFirstSection, beginSecondSection;
    if(firstSeparator==std::string::npos) {
      // No separator, Fe56 or 56Fe style
      // Identify the end of the first section

      // Find the first character that is not of the same type as the first one
      beginSecondSection = std::find_if(pS.begin()+1, pS.end(), predicate) - pS.begin();

      if(beginSecondSection>=pS.size()) {
        if(startsWithAlpha) {
          // Only alphabetic characters are present -- must be an element name
          hasIsotope = false;
        } else {
          // Only numeric characters in the string
          // Setting unknown particle species
          (*this) = ParticleSpecies(UnknownParticle);
          return;
        }
      }

      endFirstSection = beginSecondSection;

    } else {
      // One separator, Fe-56 or 56-Fe style
      endFirstSection = firstSeparator;
      beginSecondSection = firstSeparator+1;
    }

    std::string firstSection(pS.substr(0,endFirstSection));
    std::string secondSection(pS.substr(beginSecondSection,std::string::npos));
    std::stringstream parsingStream;

    // Parse the sections
    G4bool success;
    if(startsWithAlpha) {
      parsingStream.str(secondSection);
      success = parseElement(firstSection);
    } else {
      parsingStream.str(firstSection);
      success = parseElement(secondSection);
    }
    if(!success) {
      // Couldn't parse the element section
      // Setting unknown particle species
      (*this) = ParticleSpecies(UnknownParticle);
      return;
    }

    if(hasIsotope) {
      parsingStream >> theA;
      if(parsingStream.fail()) {
        // Couldn't parse the mass section
        // Setting unknown particle species
        (*this) = ParticleSpecies(UnknownParticle);
        return;
      }
    } else
      theA = 0;

    // Check that Z<=A
    if(theZ>theA && hasIsotope) {
      // Setting unknown particle species
      (*this) = ParticleSpecies(UnknownParticle);
      return;
    }

    // Special particle type for protons
    if(theZ==1 && theA==1)
      theType = Proton;
  }

  G4bool ParticleSpecies::parseElement(std::string const &s) {
    theZ = ParticleTable::parseElement(s);

    if(theZ<0)
      theZ = ParticleTable::parseIUPACElement(s);

    if(theZ<0)
      return false;
    else
      return true;
  }

  G4bool ParticleSpecies::parseIUPACElement(std::string const &s) {
    theZ = ParticleTable::parseIUPACElement(s);
    if(theZ==0)
      return false;
    else
      return true;
  }
  
  G4int ParticleSpecies::getPDGCode() const {
    switch (theType) {
    case Proton:
        return 2212;
      break;
    case Neutron:
        return 2112;
      break;
    case DeltaPlusPlus:
        return 2224;
      break;
    case DeltaPlus:
        return 2214;
      break;
    case DeltaZero:
        return 2114;
      break;
    case DeltaMinus:
        return 1114;
      break;
    case PiPlus:
        return 211;
      break;
    case PiZero:
        return 111;
      break;
    case PiMinus:
        return -211;
      break;
    case Eta:
        return 221;
      break;
    case Omega:
        return 223;
      break;
    case EtaPrime:
        return 331;
      break;
    case Photon:
        return 22;
      break;
    case Lambda:
        return 3122;
      break;
    case SigmaPlus:
        return 3222;
      break;
    case SigmaZero:
        return 3212;
      break;
    case SigmaMinus:
        return 3112;
      break;
    case KPlus:
        return 321;
      break;
    case KZero:
        return 311;
      break;
    case KZeroBar:
        return -311;
      break;
    case KShort:
        return 310;
      break;
    case KLong:
        return 130;
      break;
    case KMinus:
        return -321;
      break;
    case Composite:
      if(theA == 1 && theZ == 1 && theS == 0) return 2212;
      else if(theA == 1 && theZ == 0 && theS == 0) return 2112;
      else if(theA == 1 && theZ == 0 && theS == -1) return 3122;
      else return theA+theZ*1000-theS*1e6; // Here -theS because hyper-nucleus -> theS < 0
      break;
    default:
      INCL_ERROR("ParticleSpecies::getPDGCode: Unknown particle type." << '\n');
      return 0;
      break;
  } 
  }
}