GENIEGenerator
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
Public Member Functions | Protected Member Functions | Protected Attributes | Friends | List of all members
genie::Intranuke Class Referenceabstract

The INTRANUKE intranuclear hadron transport MC. Is a concrete implementation of the EventRecordVisitorI interface. More...

#include <Intranuke.h>

Inheritance diagram for genie::Intranuke:
Inheritance graph
[legend]
Collaboration diagram for genie::Intranuke:
Collaboration graph
[legend]

Public Member Functions

 Intranuke ()
 
 Intranuke (string name)
 
 Intranuke (string name, string config)
 
 ~Intranuke ()
 
virtual void ProcessEventRecord (GHepRecord *event_rec) const
 
void Configure (const Registry &config)
 
void Configure (string param_set)
 
- Public Member Functions inherited from genie::EventRecordVisitorI
virtual ~EventRecordVisitorI ()
 
- Public Member Functions inherited from genie::Algorithm
virtual ~Algorithm ()
 
virtual void FindConfig (void)
 
virtual const RegistryGetConfig (void) const
 
RegistryGetOwnedConfig (void)
 
virtual const AlgIdId (void) const
 Get algorithm ID. More...
 
virtual AlgStatus_t GetStatus (void) const
 Get algorithm status. More...
 
virtual bool AllowReconfig (void) const
 
virtual AlgCmp_t Compare (const Algorithm *alg) const
 Compare with input algorithm. More...
 
virtual void SetId (const AlgId &id)
 Set algorithm ID. More...
 
virtual void SetId (string name, string config)
 
const AlgorithmSubAlg (const RgKey &registry_key) const
 
void AdoptConfig (void)
 
void AdoptSubstructure (void)
 
virtual void Print (ostream &stream) const
 Print algorithm info. More...
 

Protected Member Functions

virtual void LoadConfig (void)=0
 
void TransportHadrons (GHepRecord *ev) const
 
void GenerateVertex (GHepRecord *ev) const
 
bool NeedsRescattering (const GHepParticle *p) const
 
bool CanRescatter (const GHepParticle *p) const
 
bool IsInNucleus (const GHepParticle *p) const
 
void SetTrackingRadius (const GHepParticle *p) const
 
double GenerateStep (GHepRecord *ev, GHepParticle *p) const
 
virtual void SimulateHadronicFinalState (GHepRecord *ev, GHepParticle *p) const =0
 
virtual bool HandleCompoundNucleus (GHepRecord *ev, GHepParticle *p, int mom) const =0
 
- Protected Member Functions inherited from genie::EventRecordVisitorI
 EventRecordVisitorI ()
 
 EventRecordVisitorI (string name)
 
 EventRecordVisitorI (string name, string config)
 
- Protected Member Functions inherited from genie::Algorithm
 Algorithm ()
 
 Algorithm (string name)
 
 Algorithm (string name, string config)
 
void Initialize (void)
 
void DeleteConfig (void)
 
void DeleteSubstructure (void)
 
RegistryExtractLocalConfig (const Registry &in) const
 
RegistryExtractLowerConfig (const Registry &in, const string &alg_key) const
 Split an incoming configuration Registry into a block valid for the sub-algo identified by alg_key. More...
 
template<class T >
bool GetParam (const RgKey &name, T &p, bool is_top_call=true) const
 
template<class T >
bool GetParamDef (const RgKey &name, T &p, const T &def) const
 
template<class T >
int GetParamVect (const std::string &comm_name, std::vector< T > &v, bool is_top_call=true) const
 Handle to load vectors of parameters. More...
 
int GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const
 
template<class T >
int GetParamMat (const std::string &comm_name, TMatrixT< T > &mat, bool is_top_call=true) const
 Handle to load matrix of parameters. More...
 
template<class T >
int GetParamMatSym (const std::string &comm_name, TMatrixTSym< T > &mat, bool is_top_call=true) const
 
int GetParamMatKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const
 
int AddTopRegistry (Registry *rp, bool owns=true)
 add registry with top priority, also update ownership More...
 
int AddLowRegistry (Registry *rp, bool owns=true)
 add registry with lowest priority, also update ownership More...
 
int MergeTopRegistry (const Registry &r)
 
int AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
 Add registries with top priority, also udated Ownerships. More...
 

Protected Attributes

double fTrackingRadius
 tracking radius for the nucleus in the current event More...
 
TGenPhaseSpace fGenPhaseSpace
 a phase space generator More...
 
INukeHadroDatafHadroData
 a collection of h+N,h+A data & calculations More...
 
AlgFactoryfAlgf
 algorithm factory instance More...
 
const NuclearModelIfNuclmodel
 nuclear model used to generate fermi momentum More...
 
int fRemnA
 remnant nucleus A More...
 
int fRemnZ
 remnant nucleus Z More...
 
TLorentzVector fRemnP4
 P4 of remnant system. More...
 
GEvGenMode_t fGMode
 event generation mode (lepton+A, hadron+A, ...) More...
 
double fR0
 effective nuclear size param More...
 
double fNR
 param multiplying the nuclear radius, determining how far to track hadrons beyond the "nuclear boundary" More...
 
double fNucRmvE
 binding energy to subtract from cascade nucleons More...
 
double fDelRPion
 factor by which Pion Compton wavelength gets multiplied to become nuclear size enhancement More...
 
double fDelRNucleon
 factor by which Nucleon Compton wavelength gets multiplied to become nuclear size enhancement More...
 
double fHadStep
 step size for intranuclear hadron transport More...
 
double fNucAbsFac
 absorption xsec correction factor (hN Mode) More...
 
double fNucCEXFac
 charge exchange xsec correction factor (hN Mode) More...
 
double fEPreEq
 threshold for pre-equilibrium reaction More...
 
double fFermiFac
 testing parameter to modify fermi momentum More...
 
double fFermiMomentum
 whether or not particle collision is pauli blocked More...
 
bool fDoFermi
 whether or not to do fermi mom. More...
 
bool fDoMassDiff
 whether or not to do mass diff. mode More...
 
bool fDoCompoundNucleus
 whether or not to do compound nucleus considerations More...
 
double fChPionMFPScale
 tweaking factors for tuning More...
 
double fNeutralPionMFPScale
 
double fPionFracCExScale
 
double fPionFracElasScale
 
double fPionFracInelScale
 
double fPionFracAbsScale
 
double fPionFracPiProdScale
 
double fNucleonMFPScale
 
double fNucleonFracCExScale
 
double fNucleonFracElasScale
 
double fNucleonFracInelScale
 
double fNucleonFracAbsScale
 
double fNucleonFracPiProdScale
 
- Protected Attributes inherited from genie::Algorithm
bool fAllowReconfig
 
bool fOwnsSubstruc
 true if it owns its substructure (sub-algs,...) More...
 
AlgId fID
 algorithm name and configuration set More...
 
vector< Registry * > fConfVect
 
vector< bool > fOwnerships
 ownership for every registry in fConfVect More...
 
AlgStatus_t fStatus
 algorithm execution status More...
 
AlgMapfOwnedSubAlgMp
 local pool for owned sub-algs (taken out of the factory pool) More...
 

Friends

class IntranukeTester
 

Additional Inherited Members

- Static Public Member Functions inherited from genie::Algorithm
static string BuildParamVectKey (const std::string &comm_name, unsigned int i)
 
static string BuildParamVectSizeKey (const std::string &comm_name)
 
static string BuildParamMatKey (const std::string &comm_name, unsigned int i, unsigned int j)
 
static string BuildParamMatRowSizeKey (const std::string &comm_name)
 
static string BuildParamMatColSizeKey (const std::string &comm_name)
 

Detailed Description

The INTRANUKE intranuclear hadron transport MC. Is a concrete implementation of the EventRecordVisitorI interface.

References:
R.Merenyi et al., Phys.Rev.D45 (1992) R.D.Ransome, Nucl.Phys.B 139 (2005)

Current INTRANUKE development is led by S.Dytman and H.Gallagher. The original INTRANUKE cascade MC was developed (in fortran) for the NeuGEN MC by R.Edgecock, G.F.Pearce, W.A.Mann, R.Merenyi and others.

Author
Steve Dytman dytma.nosp@m.n+@p.nosp@m.itt.e.nosp@m.du, Pittsburgh University Aaron Meyer asm58.nosp@m.@pit.nosp@m.t.edu, Pittsburgh University Alex Bell, Pittsburgh University Hugh Gallagher galla.nosp@m.g@mi.nosp@m.nos.p.nosp@m.hy.t.nosp@m.ufts..nosp@m.edu, Tufts University Costas Andreopoulos <c.andreopoulos cern.ch> STFC, Rutherford Lab
Created:
September 20, 2005
License:
Copyright (c) 2003-2024, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Definition at line 54 of file Intranuke.h.

Constructor & Destructor Documentation

Intranuke::Intranuke ( )

Definition at line 91 of file Intranuke.cxx.

91  :
93 {
94 
95 }
Intranuke::Intranuke ( string  name)

Definition at line 97 of file Intranuke.cxx.

97  :
99 {
100 
101 }
const char * name
Intranuke::Intranuke ( string  name,
string  config 
)

Definition at line 103 of file Intranuke.cxx.

103  :
104 EventRecordVisitorI(name, config)
105 {
106 
107 }
const char * name
Intranuke::~Intranuke ( )

Definition at line 109 of file Intranuke.cxx.

110 {
111 
112 }

Member Function Documentation

bool Intranuke::CanRescatter ( const GHepParticle p) const
protected

Definition at line 231 of file Intranuke.cxx.

References genie::kPdgKP, genie::kPdgNeutron, genie::kPdgPi0, genie::kPdgPiM, genie::kPdgPiP, genie::kPdgProton, and genie::GHepParticle::Pdg().

Referenced by TransportHadrons().

232 {
233 // checks whether a particle that needs to be rescattered, can in fact be
234 // rescattered by this cascade MC
235 
236  assert(p);
237  return ( p->Pdg() == kPdgPiP ||
238  p->Pdg() == kPdgPiM ||
239  p->Pdg() == kPdgPi0 ||
240  p->Pdg() == kPdgProton ||
241  p->Pdg() == kPdgNeutron ||
242  // p->Pdg() == kPdgGamma ||
243  p->Pdg() == kPdgKP //||
244  // p->Pdg() == kPdgKM
245  );
246 }
int Pdg(void) const
Definition: GHepParticle.h:63
const int kPdgKP
Definition: PDGCodes.h:172
const int kPdgPiP
Definition: PDGCodes.h:158
const int kPdgPi0
Definition: PDGCodes.h:160
const int kPdgPiM
Definition: PDGCodes.h:159
const int kPdgProton
Definition: PDGCodes.h:81
const int kPdgNeutron
Definition: PDGCodes.h:83
void Intranuke::Configure ( const Registry config)
virtual

Configure the algorithm with an external registry The registry is merged with the top level registry if it is owned, Otherwise a copy of it is added with the highest priority

Reimplemented from genie::Algorithm.

Definition at line 425 of file Intranuke.cxx.

References genie::Algorithm::Configure(), and LoadConfig().

426 {
427  Algorithm::Configure(config);
428  this->LoadConfig();
429 }
virtual void Configure(const Registry &config)
Definition: Algorithm.cxx:62
virtual void LoadConfig(void)=0
void Intranuke::Configure ( string  config)
virtual

Configure the algorithm from the AlgoConfigPool based on param_set string given in input An algorithm contains a vector of registries coming from different xml configuration files, which are loaded according a very precise prioriy This methods will load a number registries in order of priority: 1) "Tunable" parameter set from CommonParametes. This is loaded with the highest prioriry and it is designed to be used for tuning procedure Usage not expected from the user. 2) For every string defined in "CommonParame" the corresponding parameter set will be loaded from CommonParameter.xml 3) parameter set specified by the config string and defined in the xml file of the algorithm 4) if config is not "Default" also the Default parameter set from the same xml file will be loaded Effectively this avoids the repetion of a parameter when it is not changed in the requested configuration

Reimplemented from genie::Algorithm.

Definition at line 431 of file Intranuke.cxx.

References genie::Algorithm::Configure(), and LoadConfig().

432 {
433  Algorithm::Configure(param_set);
434  this->LoadConfig();
435 }
virtual void Configure(const Registry &config)
Definition: Algorithm.cxx:62
virtual void LoadConfig(void)=0
double Intranuke::GenerateStep ( GHepRecord ev,
GHepParticle p 
) const
protected

Definition at line 393 of file Intranuke.cxx.

References fChPionMFPScale, fDelRNucleon, fDelRPion, fNeutralPionMFPScale, fNucleonMFPScale, fRemnA, fRemnZ, genie::RandomGen::Instance(), genie::kPdgNeutron, genie::kPdgPi0, genie::kPdgPiM, genie::kPdgPiP, genie::kPdgProton, LOG, genie::utils::intranuke::MeanFreePath(), genie::GHepParticle::P4(), pDEBUG, genie::GHepParticle::Pdg(), genie::RandomGen::RndFsi(), and genie::GHepParticle::X4().

Referenced by TransportHadrons().

394 {
395 // Generate a step (in fermis) for particle p in the input event.
396 // Computes the mean free path L and generate an 'interaction' distance d
397 // from an exp(-d/L) distribution
398 
399  RandomGen * rnd = RandomGen::Instance();
400 
401  int pdgc = p->Pdg();
402 
403  double scale = 1.;
404  if (pdgc==kPdgPiP || pdgc==kPdgPiM) {
405  scale = fChPionMFPScale;
406  }
407  if (pdgc==kPdgPi0) {
408  scale = fNeutralPionMFPScale;
409  }
410  else if (pdgc==kPdgProton || pdgc==kPdgNeutron) {
411  scale = fNucleonMFPScale;
412  }
413 
414  double L = utils::intranuke::MeanFreePath(pdgc, *p->X4(), *p->P4(), fRemnA,
416  L *= scale;
417  double d = -1.*L * TMath::Log(rnd->RndFsi().Rndm());
418 
419  LOG("Intranuke", pDEBUG)
420  << "Mean free path = " << L << " fm / "
421  << "Generated path length = " << d << " fm";
422  return d;
423 }
TRandom3 & RndFsi(void) const
rnd number generator used by intranuclear cascade monte carlos
Definition: RandomGen.h:59
static RandomGen * Instance()
Access instance.
Definition: RandomGen.cxx:71
const TLorentzVector * P4(void) const
Definition: GHepParticle.h:78
A singleton holding random number generator classes. All random number generation in GENIE should tak...
Definition: RandomGen.h:29
int Pdg(void) const
Definition: GHepParticle.h:63
double fDelRNucleon
factor by which Nucleon Compton wavelength gets multiplied to become nuclear size enhancement ...
Definition: Intranuke.h:106
double fNucleonMFPScale
Definition: Intranuke.h:124
double fDelRPion
factor by which Pion Compton wavelength gets multiplied to become nuclear size enhancement ...
Definition: Intranuke.h:105
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE...
Definition: Messenger.h:96
const int kPdgPiP
Definition: PDGCodes.h:158
const int kPdgPi0
Definition: PDGCodes.h:160
int fRemnA
remnant nucleus A
Definition: Intranuke.h:96
double MeanFreePath(int pdgc, const TLorentzVector &x4, const TLorentzVector &p4, double A, double Z, double nRpi=0.5, double nRnuc=1.0)
Mean free path (pions, nucleons)
Definition: INukeUtils.cxx:70
const TLorentzVector * X4(void) const
Definition: GHepParticle.h:79
double fChPionMFPScale
tweaking factors for tuning
Definition: Intranuke.h:117
int fRemnZ
remnant nucleus Z
Definition: Intranuke.h:97
const int kPdgPiM
Definition: PDGCodes.h:159
const int kPdgProton
Definition: PDGCodes.h:81
double fNeutralPionMFPScale
Definition: Intranuke.h:118
const int kPdgNeutron
Definition: PDGCodes.h:83
#define pDEBUG
Definition: Messenger.h:63
void Intranuke::GenerateVertex ( GHepRecord ev) const
protected

Definition at line 151 of file Intranuke.cxx.

References epsilon, fTrackingRadius, genie::RandomGen::Instance(), genie::pdg::IsIon(), genie::pdg::IsPseudoParticle(), LOG, genie::GHepParticle::P4(), genie::GHepParticle::Pdg(), pNOTICE, genie::GHepRecord::Probe(), genie::RandomGen::RndFsi(), genie::GHepParticle::SetPosition(), genie::GHepRecord::TargetNucleus(), and genie::utils::print::Vec3AsString().

Referenced by ProcessEventRecord().

152 {
153 // Sets a vertex in the nucleus periphery
154 // Called onlt in hadron/photon-nucleus interactions.
155 
156  GHepParticle * nucltgt = evrec->TargetNucleus();
157  assert(nucltgt);
158 
159  RandomGen * rnd = RandomGen::Instance();
160  TVector3 vtx(999999.,999999.,999999.);
161 
162  // *** For h+A events (test mode):
163  // Assume a hadron beam with uniform intensity across an area,
164  // so we need to choose events uniformly within that area.
165  double x=999999., y=999999., epsilon = 0.001;
166  double R2 = TMath::Power(fTrackingRadius,2.);
167  double rp2 = TMath::Power(x,2.) + TMath::Power(y,2.);
168  while(rp2 > R2-epsilon) {
169  x = (fTrackingRadius-epsilon) * rnd->RndFsi().Rndm();
170  y = -fTrackingRadius + 2*fTrackingRadius * rnd->RndFsi().Rndm();
171  y -= ((y>0) ? epsilon : -epsilon);
172  rp2 = TMath::Power(x,2.) + TMath::Power(y,2.);
173  }
174  vtx.SetXYZ(x,y, -1.*TMath::Sqrt(TMath::Max(0.,R2-rp2)) + epsilon);
175 
176  // get the actual unit vector along the incoming hadron direction
177  TVector3 direction = evrec->Probe()->P4()->Vect().Unit();
178 
179  // rotate the vtx position
180  vtx.RotateUz(direction);
181 
182  LOG("Intranuke", pNOTICE)
183  << "Generated vtx @ R = " << vtx.Mag() << " fm / "
184  << print::Vec3AsString(&vtx);
185 
186  TObjArrayIter piter(evrec);
187  GHepParticle * p = 0;
188  while( (p = (GHepParticle *) piter.Next()) )
189  {
190  if(pdg::IsPseudoParticle(p->Pdg())) continue;
191  if(pdg::IsIon (p->Pdg())) continue;
192 
193  p->SetPosition(vtx.x(), vtx.y(), vtx.z(), 0.);
194  }
195 }
TRandom3 & RndFsi(void) const
rnd number generator used by intranuclear cascade monte carlos
Definition: RandomGen.h:59
static RandomGen * Instance()
Access instance.
Definition: RandomGen.cxx:71
double fTrackingRadius
tracking radius for the nucleus in the current event
Definition: Intranuke.h:91
A singleton holding random number generator classes. All random number generation in GENIE should tak...
Definition: RandomGen.h:29
const double epsilon
int Pdg(void) const
Definition: GHepParticle.h:63
void SetPosition(const TLorentzVector &v4)
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE...
Definition: Messenger.h:96
bool IsIon(int pdgc)
Definition: PDGUtils.cxx:42
bool IsPseudoParticle(int pdgc)
Definition: PDGUtils.cxx:27
#define pNOTICE
Definition: Messenger.h:61
STDHEP-like event record entry that can fit a particle or a nucleus.
Definition: GHepParticle.h:39
string Vec3AsString(const TVector3 *vec)
Definition: PrintUtils.cxx:80
virtual bool genie::Intranuke::HandleCompoundNucleus ( GHepRecord ev,
GHepParticle p,
int  mom 
) const
protectedpure virtual

Implemented in genie::HAIntranuke.

Referenced by TransportHadrons().

bool Intranuke::IsInNucleus ( const GHepParticle p) const
protected

Definition at line 248 of file Intranuke.cxx.

References fHadStep, fTrackingRadius, and genie::GHepParticle::X4().

Referenced by TransportHadrons().

249 {
250 // check whether the input particle is still within the nucleus
251 //
252  return (p->X4()->Vect().Mag() < fTrackingRadius + fHadStep);
253 }
double fHadStep
step size for intranuclear hadron transport
Definition: Intranuke.h:107
double fTrackingRadius
tracking radius for the nucleus in the current event
Definition: Intranuke.h:91
const TLorentzVector * X4(void) const
Definition: GHepParticle.h:79
virtual void genie::Intranuke::LoadConfig ( void  )
protectedpure virtual

Implemented in genie::HAIntranuke.

Referenced by Configure().

bool Intranuke::NeedsRescattering ( const GHepParticle p) const
protected

Definition at line 212 of file Intranuke.cxx.

References fGMode, genie::pdg::IsIon(), genie::kGMdHadronNucleus, genie::kGMdPhotonNucleus, genie::kIStHadronInTheNucleus, genie::kIStInitialState, genie::GHepParticle::Pdg(), and genie::GHepParticle::Status().

Referenced by TransportHadrons().

213 {
214 // checks whether the particle should be rescattered
215 
216  assert(p);
217 
218  if(fGMode == kGMdHadronNucleus ||
220  // hadron/photon-nucleus scattering propagate the incoming particle
221  return (
223  && !pdg::IsIon(p->Pdg()));
224  }
225  else {
226  // attempt to rescatter anything marked as 'hadron in the nucleus'
227  return (p->Status() == kIStHadronInTheNucleus);
228  }
229 }
GHepStatus_t Status(void) const
Definition: GHepParticle.h:64
int Pdg(void) const
Definition: GHepParticle.h:63
GEvGenMode_t fGMode
event generation mode (lepton+A, hadron+A, ...)
Definition: Intranuke.h:99
bool IsIon(int pdgc)
Definition: PDGUtils.cxx:42
void Intranuke::ProcessEventRecord ( GHepRecord event_rec) const
virtual

Implements genie::EventRecordVisitorI.

Reimplemented in genie::HAIntranuke.

Definition at line 114 of file Intranuke.cxx.

References genie::GHepRecord::EventGenerationMode(), fGMode, GenerateVertex(), genie::kGMdHadronNucleus, genie::kGMdPhotonNucleus, LOG, pINFO, SetTrackingRadius(), genie::GHepRecord::TargetNucleus(), and TransportHadrons().

Referenced by genie::HAIntranuke::ProcessEventRecord().

115 {
116  // Do not continue if there is no nuclear target
117  GHepParticle * nucltgt = evrec->TargetNucleus();
118  if (!nucltgt) {
119  LOG("HNIntranuke", pINFO) << "No nuclear target found - INTRANUKE exits";
120  return;
121  }
122 
123  // Decide tracking radius for the current nucleus (few * R0 * A^1/3)
124  this->SetTrackingRadius(nucltgt);
125 
126  // Understand what the event generation mode is (hadron/photon-nucleus,
127  // lepton-nucleus, nucleon decay) from the input event.
128  // The determined mode has an effect on INTRANUKE behaviour (how to lookup
129  // the residual nucleus, whether to set an intranuclear vtx etc) but it
130  // does not affect the INTRANUKE physics.
131  fGMode = evrec->EventGenerationMode();
132 
133  // For lepton-nucleus scattering and for nucleon decay intranuclear vtx
134  // position (in the target nucleus coord system) is set elsewhere.
135  // This method only takes effect in hadron/photon-nucleus interactions.
136  // In this special mode, an interaction vertex is set at the periphery
137  // of the target nucleus.
138  if(fGMode == kGMdHadronNucleus ||
140  {
141  this->GenerateVertex(evrec);
142  }
143 
144  // Now transport all hadrons outside the tracking radius.
145  // Stepping part is common for both HA and HN.
146  // Once it has been estabished that an interaction takes place then
147  // HA and HN specific code takes over in order to simulate the final state.
148  this->TransportHadrons(evrec);
149 }
void SetTrackingRadius(const GHepParticle *p) const
Definition: Intranuke.cxx:197
GEvGenMode_t fGMode
event generation mode (lepton+A, hadron+A, ...)
Definition: Intranuke.h:99
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE...
Definition: Messenger.h:96
#define pINFO
Definition: Messenger.h:62
void GenerateVertex(GHepRecord *ev) const
Definition: Intranuke.cxx:151
void TransportHadrons(GHepRecord *ev) const
Definition: Intranuke.cxx:255
STDHEP-like event record entry that can fit a particle or a nucleus.
Definition: GHepParticle.h:39
void Intranuke::SetTrackingRadius ( const GHepParticle p) const
protected

Definition at line 197 of file Intranuke.cxx.

References genie::units::A, genie::GHepParticle::A(), fNR, fR0, fTrackingRadius, genie::pdg::IsIon(), LOG, genie::GHepParticle::Pdg(), and pNOTICE.

Referenced by ProcessEventRecord().

198 {
199  assert(p && pdg::IsIon(p->Pdg()));
200  double A = p->A();
201  fTrackingRadius = fR0 * TMath::Power(A, 1./3.);
202 
203  // multiply that by some input factor so that hadrons are tracked
204  // beyond the nuclear 'boundary' since the nuclear density distribution
205  // is not zero there
206  fTrackingRadius *= fNR;
207 
208  LOG("Intranuke", pNOTICE)
209  << "Setting tracking radius to R = " << fTrackingRadius;
210 }
double fTrackingRadius
tracking radius for the nucleus in the current event
Definition: Intranuke.h:91
int Pdg(void) const
Definition: GHepParticle.h:63
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE...
Definition: Messenger.h:96
static constexpr double A
Definition: Units.h:74
double fR0
effective nuclear size param
Definition: Intranuke.h:102
bool IsIon(int pdgc)
Definition: PDGUtils.cxx:42
int A(void) const
#define pNOTICE
Definition: Messenger.h:61
double fNR
param multiplying the nuclear radius, determining how far to track hadrons beyond the &quot;nuclear bounda...
Definition: Intranuke.h:103
virtual void genie::Intranuke::SimulateHadronicFinalState ( GHepRecord ev,
GHepParticle p 
) const
protectedpure virtual

Implemented in genie::HAIntranuke.

Referenced by TransportHadrons().

void Intranuke::TransportHadrons ( GHepRecord ev) const
protected

Definition at line 255 of file Intranuke.cxx.

References genie::GHepParticle::A(), genie::GHepRecord::AddParticle(), CanRescatter(), fGMode, fHadStep, genie::GHepParticle::FirstMother(), fRemnA, fRemnP4, fRemnZ, fTrackingRadius, GenerateStep(), HandleCompoundNucleus(), IsInNucleus(), genie::kGMdDarkMatterNucleus, genie::kGMdHadronNucleus, genie::kGMdLeptonNucleus, genie::kGMdNeutronOsc, genie::kGMdNucleonDecay, genie::kGMdPhotonNucleus, genie::GHepParticle::KinE(), genie::kIStFinalStateNuclearRemnant, genie::kIStIntermediateState, genie::kIStStableFinalState, genie::kPdgHadronicBlob, LOG, genie::GHepParticle::Name(), NeedsRescattering(), genie::GHepParticle::P4(), genie::GHepRecord::Particle(), pERROR, pNOTICE, genie::GHepRecord::RemnantNucleusPosition(), genie::GHepParticle::SetFirstMother(), genie::GHepParticle::SetStatus(), SimulateHadronicFinalState(), genie::utils::intranuke::StepParticle(), genie::GHepRecord::TargetNucleusPosition(), genie::GHepParticle::X4(), and genie::GHepParticle::Z().

Referenced by ProcessEventRecord().

256 {
257 // transport all hadrons outside the nucleus
258 
259  int inucl = -1;
260  fRemnA = -1;
261  fRemnZ = -1;
262 
263  // Get 'nuclear environment' at the beginning of hadron transport
264  // and keep track of the remnant nucleus A,Z
265 
266  if(fGMode == kGMdHadronNucleus ||
268  {
269  inucl = evrec->TargetNucleusPosition();
270  }
271  else
272  if(fGMode == kGMdLeptonNucleus ||
276  {
277  inucl = evrec->RemnantNucleusPosition();
278  }
279 
280  LOG("Intranuke", pNOTICE)
281  << "Propagating hadrons within nucleus found in position = " << inucl;
282  GHepParticle * nucl = evrec->Particle(inucl);
283  if(!nucl) {
284  LOG("Intranuke", pERROR)
285  << "No nucleus found in position = " << inucl;
286  LOG("Intranuke", pERROR)
287  << *evrec;
288  return;
289  }
290 
291  fRemnA = nucl->A();
292  fRemnZ = nucl->Z();
293 
294  LOG("Intranuke", pNOTICE)
295  << "Nucleus (A,Z) = (" << fRemnA << ", " << fRemnZ << ")";
296 
297  const TLorentzVector & p4nucl = *(nucl->P4());
298  fRemnP4 = p4nucl;
299 
300  // Loop over GHEP and run intranuclear rescattering on handled particles
301  TObjArrayIter piter(evrec);
302  GHepParticle * p = 0;
303  int icurr = -1;
304 
305  while( (p = (GHepParticle *) piter.Next()) )
306  {
307  icurr++;
308 
309  // Check whether the particle needs rescattering, otherwise skip it
310  if( ! this->NeedsRescattering(p) ) continue;
311 
312  if(this->HandleCompoundNucleus(evrec,p,icurr)) continue;
313 
314  LOG("Intranuke", pNOTICE)
315  << " >> Stepping a " << p->Name()
316  << " with kinetic E = " << p->KinE() << " GeV";
317 
318  // Rescatter a clone, not the original particle
319  GHepParticle * sp = new GHepParticle(*p);
320 
321  // Set clone's mom to be the hadron that was cloned
322  sp->SetFirstMother(icurr);
323 
324  // Check whether the particle can be rescattered
325  if(!this->CanRescatter(sp)) {
326 
327  // if I can't rescatter it, I will just take it out of the nucleus
328  LOG("Intranuke", pNOTICE)
329  << "... Current version can't rescatter a " << sp->Name();
330  sp->SetFirstMother(icurr);
332  evrec->AddParticle(*sp);
333  delete sp;
334  continue; // <-- skip to next GHEP entry
335  }
336 
337  // Start stepping particle out of the nucleus
338  bool has_interacted = false;
339  while ( this-> IsInNucleus(sp) )
340  {
341  // advance the hadron by a step
343 
344  // check whether it interacts
345  double d = this->GenerateStep(evrec,sp);
346  has_interacted = (d<fHadStep);
347  if(has_interacted) break;
348  }//stepping
349 
350  if(has_interacted && fRemnA>0) {
351  // the particle interacts - simulate the hadronic interaction
352  LOG("Intranuke", pNOTICE)
353  << "Particle has interacted at location: "
354  << sp->X4()->Vect().Mag() << " / nucl rad= " << fTrackingRadius;
355  this->SimulateHadronicFinalState(evrec,sp);
356  } else if(has_interacted && fRemnA<=0) {
357  // nothing left to interact with!
358  LOG("Intranuke", pNOTICE)
359  << "*** Nothing left to interact with, escaping.";
361  evrec->AddParticle(*sp);
362  evrec->Particle(sp->FirstMother())->SetRescatterCode(1);
363  } else {
364  // the exits the nucleus without interacting - Done with it!
365  LOG("Intranuke", pNOTICE)
366  << "*** Hadron escaped the nucleus! Done with it.";
368  evrec->AddParticle(*sp);
369  evrec->Particle(sp->FirstMother())->SetRescatterCode(1);
370  }
371  delete sp;
372 
373  // Current snapshot
374  //LOG("Intranuke", pINFO) << "Current event record snapshot: " << *evrec;
375 
376  }// GHEP entries
377 
378  // Add remnant nucleus - that 'hadronic blob' has all the remaining hadronic
379  // 4p not put explicitly into the simulated particles
380  TLorentzVector v4(0.,0.,0.,0.);
381  GHepParticle remnant_nucleus(
383  evrec->AddParticle(remnant_nucleus);
384  // Mark the initial remnant nucleus as an intermediate state
385  // Don't do that in the hadron/photon-nucleus scatterig mode since the initial
386  // remnant nucleus and the target nucleus coincide.
387  if(fGMode != kGMdHadronNucleus &&
389  evrec->Particle(inucl)->SetStatus(kIStIntermediateState);
390  }
391 }
int Z(void) const
void SetFirstMother(int m)
Definition: GHepParticle.h:132
#define pERROR
Definition: Messenger.h:59
TLorentzVector fRemnP4
P4 of remnant system.
Definition: Intranuke.h:98
const TLorentzVector * P4(void) const
Definition: GHepParticle.h:78
const int kPdgHadronicBlob
Definition: PDGCodes.h:211
double fHadStep
step size for intranuclear hadron transport
Definition: Intranuke.h:107
double fTrackingRadius
tracking radius for the nucleus in the current event
Definition: Intranuke.h:91
virtual void SimulateHadronicFinalState(GHepRecord *ev, GHepParticle *p) const =0
int FirstMother(void) const
Definition: GHepParticle.h:66
string Name(void) const
Name that corresponds to the PDG code.
GEvGenMode_t fGMode
event generation mode (lepton+A, hadron+A, ...)
Definition: Intranuke.h:99
#define LOG(stream, priority)
A macro that returns the requested log4cpp::Category appending a string (using the FILE...
Definition: Messenger.h:96
bool NeedsRescattering(const GHepParticle *p) const
Definition: Intranuke.cxx:212
int fRemnA
remnant nucleus A
Definition: Intranuke.h:96
bool CanRescatter(const GHepParticle *p) const
Definition: Intranuke.cxx:231
double KinE(bool mass_from_pdg=false) const
Get kinetic energy.
void StepParticle(GHepParticle *p, double step, double nuclear_radius=-1.)
Step particle.
Definition: INukeUtils.cxx:341
const TLorentzVector * X4(void) const
Definition: GHepParticle.h:79
void SetStatus(GHepStatus_t s)
Definition: GHepParticle.h:126
int fRemnZ
remnant nucleus Z
Definition: Intranuke.h:97
virtual bool HandleCompoundNucleus(GHepRecord *ev, GHepParticle *p, int mom) const =0
double GenerateStep(GHepRecord *ev, GHepParticle *p) const
Definition: Intranuke.cxx:393
int A(void) const
#define pNOTICE
Definition: Messenger.h:61
STDHEP-like event record entry that can fit a particle or a nucleus.
Definition: GHepParticle.h:39
bool IsInNucleus(const GHepParticle *p) const
Definition: Intranuke.cxx:248

Friends And Related Function Documentation

friend class IntranukeTester
friend

Definition at line 56 of file Intranuke.h.

Member Data Documentation

AlgFactory* genie::Intranuke::fAlgf
protected

algorithm factory instance

Definition at line 94 of file Intranuke.h.

double genie::Intranuke::fChPionMFPScale
protected

tweaking factors for tuning

Definition at line 117 of file Intranuke.h.

Referenced by GenerateStep(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fDelRNucleon
protected

factor by which Nucleon Compton wavelength gets multiplied to become nuclear size enhancement

Definition at line 106 of file Intranuke.h.

Referenced by GenerateStep(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fDelRPion
protected

factor by which Pion Compton wavelength gets multiplied to become nuclear size enhancement

Definition at line 105 of file Intranuke.h.

Referenced by GenerateStep(), and genie::HAIntranuke::LoadConfig().

bool genie::Intranuke::fDoCompoundNucleus
protected

whether or not to do compound nucleus considerations

Definition at line 115 of file Intranuke.h.

Referenced by genie::HAIntranuke::LoadConfig().

bool genie::Intranuke::fDoFermi
protected

whether or not to do fermi mom.

Definition at line 113 of file Intranuke.h.

Referenced by genie::HAIntranuke::Inelastic(), genie::HAIntranuke::InelasticHA(), and genie::HAIntranuke::LoadConfig().

bool genie::Intranuke::fDoMassDiff
protected

whether or not to do mass diff. mode

Definition at line 114 of file Intranuke.h.

double genie::Intranuke::fEPreEq
protected

threshold for pre-equilibrium reaction

Definition at line 110 of file Intranuke.h.

Referenced by genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fFermiFac
protected

testing parameter to modify fermi momentum

Definition at line 111 of file Intranuke.h.

Referenced by genie::HAIntranuke::Inelastic(), genie::HAIntranuke::InelasticHA(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fFermiMomentum
protected

whether or not particle collision is pauli blocked

Definition at line 112 of file Intranuke.h.

Referenced by genie::HAIntranuke::Inelastic(), and genie::HAIntranuke::LoadConfig().

TGenPhaseSpace genie::Intranuke::fGenPhaseSpace
mutableprotected

a phase space generator

Definition at line 92 of file Intranuke.h.

GEvGenMode_t genie::Intranuke::fGMode
mutableprotected

event generation mode (lepton+A, hadron+A, ...)

Definition at line 99 of file Intranuke.h.

Referenced by NeedsRescattering(), ProcessEventRecord(), and TransportHadrons().

INukeHadroData* genie::Intranuke::fHadroData
protected

a collection of h+N,h+A data & calculations

Definition at line 93 of file Intranuke.h.

Referenced by genie::HAIntranuke::HadronFateHA(), genie::HAIntranuke::Inelastic(), genie::HAIntranuke::InelasticHA(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fHadStep
protected

step size for intranuclear hadron transport

Definition at line 107 of file Intranuke.h.

Referenced by IsInNucleus(), genie::HAIntranuke::LoadConfig(), and TransportHadrons().

double genie::Intranuke::fNeutralPionMFPScale
protected

Definition at line 118 of file Intranuke.h.

Referenced by GenerateStep(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fNR
protected

param multiplying the nuclear radius, determining how far to track hadrons beyond the "nuclear boundary"

Definition at line 103 of file Intranuke.h.

Referenced by genie::HAIntranuke::LoadConfig(), and SetTrackingRadius().

double genie::Intranuke::fNucAbsFac
protected

absorption xsec correction factor (hN Mode)

Definition at line 108 of file Intranuke.h.

Referenced by genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fNucCEXFac
protected

charge exchange xsec correction factor (hN Mode)

Definition at line 109 of file Intranuke.h.

Referenced by genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fNucleonFracAbsScale
protected
double genie::Intranuke::fNucleonFracCExScale
protected
double genie::Intranuke::fNucleonFracElasScale
protected
double genie::Intranuke::fNucleonFracInelScale
protected
double genie::Intranuke::fNucleonFracPiProdScale
protected
double genie::Intranuke::fNucleonMFPScale
protected

Definition at line 124 of file Intranuke.h.

Referenced by GenerateStep(), and genie::HAIntranuke::LoadConfig().

const NuclearModelI* genie::Intranuke::fNuclmodel
protected

nuclear model used to generate fermi momentum

Definition at line 95 of file Intranuke.h.

Referenced by genie::HAIntranuke::Inelastic(), genie::HAIntranuke::InelasticHA(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fNucRmvE
protected

binding energy to subtract from cascade nucleons

Definition at line 104 of file Intranuke.h.

Referenced by genie::HAIntranuke::Inelastic(), and genie::HAIntranuke::LoadConfig().

double genie::Intranuke::fPionFracAbsScale
protected
double genie::Intranuke::fPionFracCExScale
protected
double genie::Intranuke::fPionFracElasScale
protected
double genie::Intranuke::fPionFracInelScale
protected
double genie::Intranuke::fPionFracPiProdScale
protected
double genie::Intranuke::fR0
protected

effective nuclear size param

Definition at line 102 of file Intranuke.h.

Referenced by genie::HAIntranuke::LoadConfig(), and SetTrackingRadius().

int genie::Intranuke::fRemnA
mutableprotected
TLorentzVector genie::Intranuke::fRemnP4
mutableprotected
int genie::Intranuke::fRemnZ
mutableprotected
double genie::Intranuke::fTrackingRadius
mutableprotected

tracking radius for the nucleus in the current event

Definition at line 91 of file Intranuke.h.

Referenced by GenerateVertex(), IsInNucleus(), SetTrackingRadius(), and TransportHadrons().


The documentation for this class was generated from the following files: