Epos Class Reference

This code is used to get an Epos Monte Carlo event. More...

#include <Epos.h>

Inheritance diagram for Epos:

Collaboration diagram for Epos:

Public Member Functions
	Epos (const std::string &name, ISvcLocator *pSvcLocator)
virtual	~Epos ()=default
virtual StatusCode	genInitialize ()
	For initializing the generator, if required.
virtual StatusCode	callGenerator ()
	For calling the generator on each iteration of the event loop.
virtual StatusCode	genFinalize ()
	For finalising the generator, if required.
virtual StatusCode	fillEvt (HepMC::GenEvent *evt)
	For filling the HepMC event object.
virtual StatusCode	sysInitialize () override
	Override sysInitialize.
virtual const DataObjIDColl &	extraOutputDeps () const override
	Return the list of extra output dependencies.
ServiceHandle< StoreGateSvc > &	evtStore ()
	The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.
const ServiceHandle< StoreGateSvc > &	detStore () const
	The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.
virtual StatusCode	sysStart () override
	Handle START transition.
virtual std::vector< Gaudi::DataHandle * >	inputHandles () const override
	Return this algorithm's input handles.
virtual std::vector< Gaudi::DataHandle * >	outputHandles () const override
	Return this algorithm's output handles.
Gaudi::Details::PropertyBase &	declareProperty (Gaudi::Property< T, V, H > &t)
void	updateVHKA (Gaudi::Details::PropertyBase &)
MsgStream &	msg () const
bool	msgLvl (const MSG::Level lvl) const
Event loop algorithm methods: not to be overloaded
StatusCode	initialize ()
StatusCode	execute ()
StatusCode	finalize ()
Gen-specific event loop methods: to be overloaded
virtual StatusCode	genuserInitialize ()
	For initialization of user code, if required. Called after genInitialize.
Event collection accessors (const and non-const)
HepMC::GenEvent *event	ATLAS_NOT_CONST_THREAD_SAFE ()
	Access the current signal event (first in the McEventCollection)
McEventCollection *events	ATLAS_NOT_CONST_THREAD_SAFE ()
	Access the current event's McEventCollection.
const HepMC::GenEvent *	event_const () const
	Access the current signal event (const)
const McEventCollection *	events_const () const
	Access the current event's McEventCollection (const)
const McEventCollection *	events_const (const EventContext &ctx) const
Particle data accessors
const ServiceHandle< IPartPropSvc >	partPropSvc () const
	Access the particle property service.
const HepPDT::ParticleDataTable &	particleTable () const
	Get a particle data table.
const HepPDT::ParticleDataTable &	pdt () const
	Shorter alias to get a particle data table.
const HepPDT::ParticleData *	particleData (int pid) const
	Access an element in the particle data table.

Protected Member Functions
void	renounceArray (SG::VarHandleKeyArray &handlesArray)
	remove all handles from I/O resolution
std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void >	renounce (T &h)
void	extraDeps_update_handler (Gaudi::Details::PropertyBase &ExtraDeps)
	Add StoreName to extra input/output deps as needed.

Protected Attributes
CRMCinterface *	m_interface
int	m_events
int	m_ievent
int	m_iout
double	m_beamMomentum
double	m_targetMomentum
int	m_model
int	m_primaryParticle
int	m_targetParticle
std::string	m_paramFile
std::string	m_lheout
int	m_itab
int	m_ilheout
int	m_nEvents
double	m_degymx
IntegerProperty	m_dsid {this, "Dsid", 999999}
std::vector< int >	m_partID
std::vector< double >	m_partPx
std::vector< double >	m_partPy
std::vector< double >	m_partPz
std::vector< double >	m_partEnergy
std::vector< double >	m_partMass
std::vector< int >	m_partStat
std::vector< long int >	m_seeds
Properties
std::string	m_mcEventKey {}
	StoreGate key for the MC event collection (defaults to GEN_EVENT)
BooleanProperty	m_mkMcEvent {this, "MakeMcEvent", false, "Create a new MC event collection if it doesn't exist"}
	Flag to determine if a new MC event collection should be made if it doesn't exist.

Static Protected Attributes
static const size_t	kMaxParticles {10000}

Private Types
typedef ServiceHandle< StoreGateSvc >	StoreGateSvc_t

Private Member Functions
Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
	specialization for handling Gaudi::Property<SG::VarHandleKey>

Private Attributes
DataObjIDColl	m_extendedExtraObjects
StoreGateSvc_t	m_evtStore
	Pointer to StoreGate (event store by default)
StoreGateSvc_t	m_detStore
	Pointer to StoreGate (detector store by default)
std::vector< SG::VarHandleKeyArray * >	m_vhka
bool	m_varHandleArraysDeclared

Features for derived classes to use internally
IntegerProperty	m_randomSeed {this, "RandomSeed", 1234567, "Random seed for the built-in random engine"}
	Seed for random number engine.
BooleanProperty	m_isAfterburner {this, "IsAfterburner", false, "Set true if generator modifies existing events rather than creating new ones"}
	Flag for normal vs. afterburner generators.
ServiceHandle< IAthRNGSvc >	m_rndmSvc {this, "RndmSvc", "AthRNGSvc"}
	Data members.
ServiceHandle< IIncidentSvc >	m_incidentSvc {this, "IncidentSvc", "IncidentSvc"}
	Handle on the incident service.
CLHEP::HepRandomEngine *	getRandomEngine (const std::string &streamName, const EventContext &ctx) const
CLHEP::HepRandomEngine *	getRandomEngine (const std::string &streamName, unsigned long int randomSeedOffset, const EventContext &ctx) const
CLHEP::HepRandomEngine *	getRandomEngineDuringInitialize (const std::string &streamName, unsigned long int randomSeedOffset, unsigned int conditionsRun=1, unsigned int lbn=1) const

Utility event-mangling functions
Todo Replace with HepMC units when available
ServiceHandle< IPartPropSvc >	m_ppSvc {this, "PartPropSvc", "PartPropSvc"}
	Handle on the particle property service.
SG::ReadHandleKey< McEventCollection >	m_mcevents_const { this, "McEventKey", "GEN_EVENT", "StoreGate key of the MC event collection" }
	Const handle to the MC event collection.
void	GeVToMeV (HepMC::GenEvent *evt)
	Scale event energies/momenta by x 1000.
void	MeVToGeV (HepMC::GenEvent *evt)
	Scale event energies/momenta by x 1/1000.
void	cmTomm (HepMC::GenEvent *evt)
	Scale event lengths by x 10.
void	mmTocm (HepMC::GenEvent *evt)
	Scale event lengths by x 1/10.

Detailed Description

This code is used to get an Epos Monte Carlo event.

genInitialize() is used to read parameters callGenerator() makes the event genFinalize() writes log files etc fillEvt(GeneratorEvent* evt) passes the event to HepMC

The output will be stored in the transient event store so it can be passed to the simulation.

Author

Sami Kama Adapted from Ian Hinchliffe's code

Definition at line 28 of file Epos.h.

Member Typedef Documentation

StoreGateSvc_t

typedef ServiceHandle<StoreGateSvc> AthCommonDataStore< AthCommonMsg< Algorithm > >::StoreGateSvc_t

privateinherited

Definition at line 388 of file AthCommonDataStore.h.

Constructor & Destructor Documentation

Epos()

Epos::Epos	(	const std::string &	name,
		ISvcLocator *	pSvcLocator )

Definition at line 60 of file Epos.cxx.

                                                           :
    GenModule( name, pSvcLocator )
{
    m_interface = nullptr;
    epos_rndm_stream = "EPOS_INIT";
 
    declareProperty( "BeamMomentum",    m_beamMomentum    = -6500.0 );      // GeV
    declareProperty( "TargetMomentum",  m_targetMomentum  = 6500.0 );
    declareProperty( "Model",           m_model           = 7 );            // 0=EPOS 1.99 LHC, 1=EPOS 1.99
    declareProperty( "PrimaryParticle", m_primaryParticle = 1 );            // 1=p, 12=C, 120=pi+, 207=Pb
    declareProperty( "TargetParticle",  m_targetParticle  = 1 );
    declareProperty( "ParamFile",       m_paramFile       = "crmc.param" );
    declareProperty( "LheOutput",       m_ilheout       = 0 );
    declareProperty( "LheFile",         m_lheout       = "epos.lhe" );
    declareProperty( "TabCreate",       m_itab       = 0 );
    declareProperty( "nEvents",         m_nEvents    = 5500 );
    declareProperty( "maxCMEnergy",     m_degymx     = 13000.0 ); // maximum center-of-mass energy which will be call in the run [GeV]
 
    m_events = 0; // current event number (counted by interface)
    m_ievent = 0;  // current event number counted by Epos
    m_iout = 0; // output type (output)
 
    // initialize internally used arrays
    ATH_MSG_INFO( "max number of Particles  " << kMaxParticles );
    m_partID.resize (kMaxParticles);
    m_partPx.resize (kMaxParticles);
    m_partPy.resize (kMaxParticles);
    m_partPz.resize (kMaxParticles);
    m_partEnergy.resize (kMaxParticles);
    m_partMass.resize (kMaxParticles);
    m_partStat.resize (kMaxParticles);
    for (size_t i = 0; i < kMaxParticles; ++i) {
        m_partID[i] = 0;
        m_partPx[i] = m_partPy[i] = m_partPz[i] = m_partEnergy[i] = m_partMass[i] = 0.0;
        m_partStat[i] = 0;
    }
 
}

~Epos()

virtual Epos::~Epos ( )

virtualdefault

Member Function Documentation

ATLAS_NOT_CONST_THREAD_SAFE() [1/2]

HepMC::GenEvent *event GenBase::ATLAS_NOT_CONST_THREAD_SAFE ( )

inlineinherited

Access the current signal event (first in the McEventCollection)

Note

This function will make a new McEventCollection if there is not already a valid one and MakeMcEvent=True.

Definition at line 76 of file GenBase.h.

                                                      {
    if (events()->empty())
      ATH_MSG_ERROR("McEventCollection is empty during first event access");
    return *(events()->begin());
  }

ATLAS_NOT_CONST_THREAD_SAFE() [2/2]

McEventCollection *events GenBase::ATLAS_NOT_CONST_THREAD_SAFE ( )

inherited

Access the current event's McEventCollection.

Note

This function will make a new McEventCollection if there is not already a valid one and MakeMcEvent=True.

callGenerator()

StatusCode Epos::callGenerator ( )

virtual

For calling the generator on each iteration of the event loop.

Reimplemented from GenModule.

Definition at line 124 of file Epos.cxx.

{
    // ATH_MSG_INFO( " EPOS Generating." );
 
    //Re-seed the random number stream
    long seeds[7];
    const EventContext& ctx = Gaudi::Hive::currentContext();
    ATHRNG::calculateSeedsMC21(seeds, epos_rndm_stream, ctx.eventID().event_number(), m_dsid, m_randomSeed);
    p_rndmEngine->setSeeds(seeds, 0); // NOT THREAD-SAFE
 
    // save the random number seeds in the event
    const long *s = p_rndmEngine->getSeeds();
    m_seeds.clear();
    m_seeds.push_back(s[0]);
    m_seeds.push_back(s[1]);
 
    ++m_events;
 
    // as in crmchep.h
    int nParticles = 0;
    double impactParameter = -1.0;
 
    // generate event
    crmc_f_( m_iout, m_ievent,nParticles, impactParameter, m_partID[0], m_partPx[0], m_partPy[0], m_partPz[0],
             m_partEnergy[0], m_partMass[0], m_partStat[0]  );
 
    return StatusCode::SUCCESS;
}

cmTomm()

void GenBase::cmTomm ( HepMC::GenEvent * evt )

protectedinherited

Scale event lengths by x 10.

Definition at line 78 of file GenBase.cxx.

                                       {
  for (HepMC::GenEvent::vertex_iterator vtx = evt->vertices_begin(); vtx != evt->vertices_end(); ++vtx) {
    const HepMC::FourVector fv((*vtx)->position().x() * 10,
                               (*vtx)->position().y() * 10,
                               (*vtx)->position().z() * 10,
                               (*vtx)->position().t() * 10);
    (*vtx)->set_position(fv);
  }
}

declareGaudiProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< Algorithm > >::declareGaudiProperty ( Gaudi::Property< T, V, H > & hndl, const SG::VarHandleKeyType &  )

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKey>

Definition at line 156 of file AthCommonDataStore.h.

  {
    return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                       hndl.value(), 
                                                       hndl.documentation());
 
  }

declareProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< Algorithm > >::declareProperty ( Gaudi::Property< T, V, H > & t )

inlineinherited

Definition at line 145 of file AthCommonDataStore.h.

                                                                     {
    typedef typename SG::HandleClassifier<T>::type htype;
    return AthCommonDataStore<PBASE>::declareGaudiProperty(t, htype());
  }

detStore()

const ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< Algorithm > >::detStore ( ) const

inlineinherited

The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 95 of file AthCommonDataStore.h.

{ return m_detStore; }

event_const()

const HepMC::GenEvent * GenBase::event_const ( ) const

inlineinherited

Access the current signal event (const)

Definition at line 83 of file GenBase.h.

                                           {
    if (events_const()->empty())
      ATH_MSG_ERROR("Const McEventCollection is empty during first event access");
    return *(events_const()->begin());
  }

events_const() [1/2]

const McEventCollection * GenBase::events_const ( ) const

inlineinherited

Access the current event's McEventCollection (const)

Definition at line 96 of file GenBase.h.

                                                {
    return events_const( getContext() );
  }

events_const() [2/2]

const McEventCollection * GenBase::events_const ( const EventContext & ctx ) const

inlineinherited

Definition at line 99 of file GenBase.h.

                                                                         {
    SG::ReadHandle<McEventCollection> ret = SG::makeHandle(m_mcevents_const, ctx);
    if (!ret.isValid())
      ATH_MSG_ERROR("No McEventCollection found in StoreGate with key " << m_mcevents_const.key());
    return ret.cptr();
  }

evtStore()

ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< Algorithm > >::evtStore ( )

inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 85 of file AthCommonDataStore.h.

{ return m_evtStore; }

execute()

StatusCode GenModule::execute ( )

virtualinherited

Todo

Remove hard-coded alg name checking (already incomplete)

Reimplemented from GenBase.

Definition at line 70 of file GenModule.cxx.

                              {
  // Examples of how to retrieve the random number engine for a given
  // stream.
  // NB getRandomEngine should only be called once per event for a
  // given stream, as it causes the stream to be re-seeded each time
  // it is called.
 
  // Example 1 - seeded based on the current event number (+ slot, run, streamName)
  //const EventContext& ctx = Gaudi::Hive::currentContext();
  //CLHEP::HepRandomEngine* rndmEngine = this->getRandomEngine("MyStream", ctx);
 
  // Example 2 - seeded based on the m_randomSeed property (+ slot, run, streamName)
  //const EventContext& ctx = Gaudi::Hive::currentContext();
  //CLHEP::HepRandomEngine* rndmEngine = this->getRandomEngine("MyStream", m_randomSeed.value(), ctx);
 
  // Call the code that generates an event
  CHECK(this->callGenerator());
 
  // Create the MC event and send the GeneratorEvent stored in it to fillEvt
  HepMC::GenEvent* evt = HepMC::newGenEvent(1,1);
  CHECK(this->fillEvt(evt));
  HepMC::fillBarcodesAttribute(evt);
 
  // Add the event to the MC event collection
  if (events()) {
    // If this is an "afterburner" generator, replace the last event rather than add a new one
    if (m_isAfterburner.value() || name() == "Tauola" || name() == "Photos") {
      events()->pop_back();
    }
    // Add the event to the end of the collection
    events()->push_back(evt);
    ATH_MSG_DEBUG("MC event added to McEventCollection");
 
    // remove the empty event in case of ParticleDecayer
    if (name() == "ParticleDecayer") {
      events()->pop_back();
    }
  }
 
  // Call the incident service to notify that an event has been made
  m_incidentSvc->fireIncident( Incident(name(), "McEventGenerated") );
  return StatusCode::SUCCESS;
}

extraDeps_update_handler()

void AthCommonDataStore< AthCommonMsg< Algorithm > >::extraDeps_update_handler ( Gaudi::Details::PropertyBase & ExtraDeps )

protectedinherited

Add StoreName to extra input/output deps as needed.

use the logic of the VarHandleKey to parse the DataObjID keys supplied via the ExtraInputs and ExtraOuputs Properties to add the StoreName if it's not explicitly given

extraOutputDeps()

const DataObjIDColl & AthAlgorithm::extraOutputDeps ( ) const

overridevirtualinherited

Return the list of extra output dependencies.

This list is extended to include symlinks implied by inheritance relations.

Definition at line 50 of file AthAlgorithm.cxx.

{
  // If we didn't find any symlinks to add, just return the collection
  // from the base class.  Otherwise, return the extended collection.
  if (!m_extendedExtraObjects.empty()) {
    return m_extendedExtraObjects;
  }
  return Algorithm::extraOutputDeps();
}

fillEvt()

StatusCode Epos::fillEvt ( HepMC::GenEvent * evt )

virtual

For filling the HepMC event object.

We use the old approach for HepMC2, as the CRMC 2.0.1 has a bug that prevents us from using the same approach as for HepMC3. This should be changed once the bug is fixed.

Implements GenModule.

Definition at line 183 of file Epos.cxx.

{
    CRMChepevt<HepMC::GenParticlePtr, HepMC::GenVertexPtr, HepMC::FourVector, HepMC::GenEvent> hepevtconverter;
#ifdef HEPMC3
    hepevtconverter.convert(*evt);
    evt->set_event_number(m_events);
    HepMC::fillBarcodesAttribute(evt);
    HepMC::set_random_states(evt, m_seeds );
    evt->weights().push_back(1.0);
    m_runinfo = std::make_shared<HepMC3::GenRunInfo>();
    std::vector<std::string> names = {"Default"};
    m_runinfo->set_weight_names(names);
    evt->set_run_info(m_runinfo);
    evt->set_units(HepMC3::Units::MEV, HepMC3::Units::MM);
#else
    hepevtconverter.convert();
    for (auto& v: hepevtconverter.vertices()) evt->add_vertex(v);
    if  (hepevtconverter.beams().size() == 2) evt->set_beam_particles(hepevtconverter.beams()[0],hepevtconverter.beams()[1]);
    if  (hepevtconverter.beams().size() == 1) evt->set_beam_particles(hepevtconverter.beams()[0],nullptr);
    evt->set_event_number(m_events);
    HepMC::set_random_states(evt, m_seeds );
    evt->weights().push_back(1.0);
    GeVToMeV(evt);
#endif
 
    std::vector<HepMC::GenParticlePtr> beams;
 
    for (auto p: *evt) {
        if (p->status() == 4) {
            beams.push_back(std::move(p));
        }
    }
 
    if (beams.size() >= 2) {
        evt->set_beam_particles(beams[0], beams[1]);
    } else {
        ATH_MSG_INFO( "EPOS event has only " << beams.size() << " beam particles" );
    }
 
    // Heavy Ion and Signal ID from Epos to HepMC
 
#ifdef HEPMC3
    HepMC::GenHeavyIonPtr ion= std::make_shared<HepMC::GenHeavyIon>();
    ion->Ncoll_hard=cevt_.kohevt;
    ion->Npart_proj=cevt_.npjevt;
    ion->Npart_targ=cevt_.ntgevt;
    ion->Ncoll=cevt_.kolevt;
    ion->spectator_neutrons=cevt_.npnevt + cevt_.ntnevt;
    ion->spectator_protons=cevt_.nppevt + cevt_.ntpevt;
    ion->N_Nwounded_collisions=-1;
    ion->Nwounded_N_collisions=-1;
    ion->Nwounded_Nwounded_collisions=-1;
    ion->impact_parameter= cevt_.bimevt;
    ion->event_plane_angle=cevt_.phievt;
    ion->eccentricity=-1;  //c2evt_.fglevt,  //correct name but not defined
    ion->sigma_inel_NN=1e9*hadr5_.sigine;
#else
    HepMC::HeavyIon ion(cevt_.kohevt,
                        cevt_.npjevt,
                        cevt_.ntgevt,
                        cevt_.kolevt,
                        cevt_.npnevt + cevt_.ntnevt,
                        cevt_.nppevt + cevt_.ntpevt,
                        -1,
                        -1,
                        -1,
                        cevt_.bimevt,
                        cevt_.phievt,
                        -1,  //c2evt_.fglevt,  //correct name but not defined
                        1e9*hadr5_.sigine);
#endif
 
    evt->set_heavy_ion(std::move(ion));
 
    //an integer ID uniquely specifying the signal process (i.e. MSUB in Pythia)
    // Epos 1-ND, 2-DD, 3-CD, 4 AB->XB, -4 AB->AX translated into signal_proces_id 101-ND, 105 - DD, 102 - CD, 103 -AB->XB, 104 AB->AX
    int sig_id = -1;
    switch (int(c2evt_.typevt))
    {
    case  1: sig_id = 101; break;
    case -1: sig_id = 101; break;
    case  2: sig_id = 105; break;
    case -2: sig_id = 105; break;
    case  3: sig_id = 102; break;
    case -3: sig_id = 102; break;
    case  4: sig_id = 103; break;
    case -4: sig_id = 104; break;
    default: ATH_MSG_INFO( "Signal ID not recognised for setting HEPEVT \n");
    }
 
    HepMC::set_signal_process_id(evt,sig_id);
 
    double xsigtot, xsigine, xsigela, xsigdd, xsigsd, xsloela, xsigtotaa, xsigineaa, xsigelaaa;
    xsigtot = xsigine = xsigela = xsigdd = xsigsd = xsloela = xsigtotaa = xsigineaa = xsigelaaa = 0.0;
    crmc_xsection_f_(xsigtot, xsigine, xsigela, xsigdd, xsigsd, xsloela, xsigtotaa, xsigineaa, xsigelaaa);
    xsigtot *= 1000000;         // [mb] to [nb] conversion
#ifdef HEPMC3
    std::shared_ptr<HepMC3::GenCrossSection> xsec = std::make_shared<HepMC3::GenCrossSection>();
    xsec->set_cross_section(xsigine, 0.0);
#else
    HepMC::GenCrossSection xsec;
    xsec.set_cross_section(xsigine, 0.0);
#endif
    evt->set_cross_section(std::move(xsec));
 
    return StatusCode::SUCCESS;
}

finalize()

StatusCode GenModule::finalize ( )

inlineinherited

Definition at line 55 of file GenModule.h.

{ return genFinalize(); }

genFinalize()

StatusCode Epos::genFinalize ( )

virtual

For finalising the generator, if required.

Reimplemented from GenModule.

Definition at line 154 of file Epos.cxx.

{
    ATH_MSG_INFO("EPOS finalizing.");
 
    std::cout << "MetaData: generator = Epos " << std::endl;
 
    // retrieve information about the total cross-section from Epos
    double xsigtot, xsigine, xsigela, xsigdd, xsigsd, xsloela, xsigtotaa, xsigineaa, xsigelaaa;
    xsigtot = xsigine = xsigela = xsigdd = xsigsd = xsloela = xsigtotaa = xsigineaa = xsigelaaa = 0.0;
 
    crmc_xsection_f_(xsigtot, xsigine, xsigela, xsigdd, xsigsd, xsloela, xsigtotaa, xsigineaa, xsigelaaa);
 
    xsigtot *= 1000000;         // [mb] to [nb] conversion
    std::cout << "MetaData: cross-section (nb) = " << xsigtot << std::endl;
    xsigine *= 1000000;        //[mb] to [nb] conversion
    std::cout << "MetaData: cross-section inelastic (cut + projectile diffraction)[nb] = " << xsigine << std::endl;
    xsigela *= 1000000;         // [mb] to [nb] conversion
    std::cout << "MetaData: cross-section elastic (includes target diffraction)[nb] = " << xsigela << std::endl;
    xsigdd *= 1000000;         // [mb] to [nb] conversion
    std::cout << "MetaData: cross-section dd (nb) = " << xsigdd << std::endl;
    xsigsd *= 1000000;         // [mb] to [nb] conversion
    std::cout << "MetaData: cross-section sd (nb) = " << xsigsd << std::endl;
 
    //  m_eposEventInfo.close();
 
    return StatusCode::SUCCESS;
}

genInitialize()

StatusCode Epos::genInitialize ( )

virtual

For initializing the generator, if required.

Reimplemented from GenModule.

Definition at line 100 of file Epos.cxx.

{
    ATH_MSG_INFO( " CRMC INITIALISING.\n" );
    ATH_MSG_INFO( "signal_rocess_id 101-ND, 105-DD, 102-CD, 103 AB->XB, 104 AB->AX \n");
 
    p_rndmEngine = getRandomEngineDuringInitialize(epos_rndm_stream, m_randomSeed, m_dsid); // NOT THREAD-SAFE
    const long *sip = p_rndmEngine->getSeeds();
    long int si1 = sip[0];
 
    int iSeed = si1%1000000000;     // FIXME ?
    int lout = 50;     //lenght of the output string (useful only for LHE output)
    // initialise Epos and set up initial values
 
    crmc_init_f_( m_degymx, iSeed, m_model, m_itab, m_ilheout, (m_paramFile + " ").c_str(), m_lheout.c_str(), lout);
    crmc_set_f_(m_nEvents,m_beamMomentum, m_targetMomentum, m_primaryParticle, m_targetParticle);
 
    epos_rndm_stream = "EPOS";
 
    m_events = 0;
 
    return StatusCode::SUCCESS;
}

genuserInitialize()

virtual StatusCode GenModule::genuserInitialize ( )

inlinevirtualinherited

For initialization of user code, if required. Called after genInitialize.

Reimplemented in Pythia8B_i.

Definition at line 64 of file GenModule.h.

{ return StatusCode::SUCCESS; }

getRandomEngine() [1/2]

CLHEP::HepRandomEngine * GenModule::getRandomEngine ( const std::string & streamName, const EventContext & ctx ) const

protectedinherited

Definition at line 34 of file GenModule.cxx.

{
  ATHRNG::RNGWrapper* rngWrapper = m_rndmSvc->getEngine(this, streamName);
  std::string rngName = name()+streamName;
  rngWrapper->setSeed( rngName, ctx );
  return rngWrapper->getEngine(ctx);
}

getRandomEngine() [2/2]

CLHEP::HepRandomEngine * GenModule::getRandomEngine ( const std::string & streamName, unsigned long int randomSeedOffset, const EventContext & ctx ) const

protectedinherited

Definition at line 44 of file GenModule.cxx.

{
  ATHRNG::RNGWrapper* rngWrapper = m_rndmSvc->getEngine(this, streamName);
  rngWrapper->setSeed( streamName, ctx.slot(), randomSeedOffset, ctx.eventID().run_number() );
  return rngWrapper->getEngine(ctx);
}

getRandomEngineDuringInitialize()

CLHEP::HepRandomEngine * GenModule::getRandomEngineDuringInitialize ( const std::string & streamName, unsigned long int randomSeedOffset, unsigned int conditionsRun = 1, unsigned int lbn = 1 ) const

protectedinherited

Definition at line 53 of file GenModule.cxx.

{
  const size_t slot=0;
  EventContext ctx;
  ctx.setSlot( slot );
  ctx.setEventID (EventIDBase (conditionsRun,
               EventIDBase::UNDEFEVT,  // event
               EventIDBase::UNDEFNUM,  // timestamp
               EventIDBase::UNDEFNUM,  // timestamp ns
               lbn));
  Atlas::setExtendedEventContext(ctx,
                                 Atlas::ExtendedEventContext( evtStore()->hiveProxyDict(),
                                                              conditionsRun) );
  return getRandomEngine(streamName, randomSeedOffset, ctx);
}

GeVToMeV()

void GenBase::GeVToMeV ( HepMC::GenEvent * evt )

protectedinherited

Scale event energies/momenta by x 1000.

Todo

Add HepMC units awareness and do it differently when HepMC provides this functionality directly (and reference-based FourVector accessors)

Definition at line 58 of file GenBase.cxx.

                                         {
  for (HepMC::GenEvent::particle_iterator p = evt->particles_begin(); p != evt->particles_end(); ++p) {
    const HepMC::FourVector fv((*p)->momentum().px() * 1000,
                               (*p)->momentum().py() * 1000,
                               (*p)->momentum().pz() * 1000,
                               (*p)->momentum().e()  * 1000);
    (*p)->set_momentum(fv);
    (*p)->set_generated_mass(1000 * (*p)->generated_mass());
  }
}

initialize()

StatusCode GenModule::initialize ( )

virtualinherited

Reimplemented from GenBase.

Definition at line 21 of file GenModule.cxx.

                                 {
  // Base class initializations
  CHECK(GenBase::initialize());
  // Get the random number service
  CHECK(m_rndmSvc.retrieve());
  // Get the incident service
  CHECK(m_incidentSvc.retrieve());
  CHECK(genInitialize());
  CHECK(genuserInitialize());
  return StatusCode::SUCCESS;
}

inputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< Algorithm > >::inputHandles ( ) const

overridevirtualinherited

Return this algorithm's input handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

MeVToGeV()

void GenBase::MeVToGeV ( HepMC::GenEvent * evt )

protectedinherited

Scale event energies/momenta by x 1/1000.

Definition at line 68 of file GenBase.cxx.

                                         {
  for (HepMC::GenEvent::particle_iterator p = evt->particles_begin(); p != evt->particles_end(); ++p) {
    const HepMC::FourVector fv((*p)->momentum().px() / 1000,
                               (*p)->momentum().py() / 1000,
                               (*p)->momentum().pz() / 1000,
                               (*p)->momentum().e()  / 1000);
    (*p)->set_momentum(fv);
    (*p)->set_generated_mass((*p)->generated_mass() / 1000);
  }
}

mmTocm()

void GenBase::mmTocm ( HepMC::GenEvent * evt )

protectedinherited

Scale event lengths by x 1/10.

Definition at line 87 of file GenBase.cxx.

                                       {
  for (HepMC::GenEvent::vertex_iterator vtx = evt->vertices_begin(); vtx != evt->vertices_end(); ++vtx) {
    const HepMC::FourVector fv((*vtx)->position().x() / 10,
                               (*vtx)->position().y() / 10,
                               (*vtx)->position().z() / 10,
                               (*vtx)->position().t() / 10);
    (*vtx)->set_position(fv);
  }
}

msg()

MsgStream & AthCommonMsg< Algorithm >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                {
    return this->msgStream();
  }

msgLvl()

bool AthCommonMsg< Algorithm >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                               {
    return this->msgLevel(lvl);
  }

outputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< Algorithm > >::outputHandles ( ) const

overridevirtualinherited

Return this algorithm's output handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

particleData()

const HepPDT::ParticleData * GenBase::particleData ( int pid ) const

inlineinherited

Access an element in the particle data table.

Definition at line 126 of file GenBase.h.

                                                        {
    return pdt().particle(HepPDT::ParticleID(std::abs(pid)));
  }

particleTable()

const HepPDT::ParticleDataTable & GenBase::particleTable ( ) const

inlineinherited

Get a particle data table.

Definition at line 118 of file GenBase.h.

                                                       {
    return *(m_ppSvc->PDT());
  }

partPropSvc()

const ServiceHandle< IPartPropSvc > GenBase::partPropSvc ( ) const

inlineinherited

Access the particle property service.

Definition at line 113 of file GenBase.h.

                                                        {
    return m_ppSvc;
  }

pdt()

const HepPDT::ParticleDataTable & GenBase::pdt ( ) const

inlineinherited

Shorter alias to get a particle data table.

Definition at line 123 of file GenBase.h.

{ return particleTable(); }

renounce()

std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > AthCommonDataStore< AthCommonMsg< Algorithm > >::renounce ( T & h )

inlineprotectedinherited

Definition at line 380 of file AthCommonDataStore.h.

  {
    h.renounce();
    PBASE::renounce (h);
  }

renounceArray()

void AthCommonDataStore< AthCommonMsg< Algorithm > >::renounceArray ( SG::VarHandleKeyArray & handlesArray )

inlineprotectedinherited

remove all handles from I/O resolution

Definition at line 364 of file AthCommonDataStore.h.

                                                          {
    handlesArray.renounce();
  }

sysInitialize()

StatusCode AthAlgorithm::sysInitialize ( )

overridevirtualinherited

Override sysInitialize.

Override sysInitialize from the base class.

Loop through all output handles, and if they're WriteCondHandles, automatically register them and this Algorithm with the CondSvc

Scan through all outputHandles, and if they're WriteCondHandles, register them with the CondSvc

Reimplemented from AthCommonDataStore< AthCommonMsg< Algorithm > >.

Reimplemented in AthAnalysisAlgorithm, AthFilterAlgorithm, AthHistogramAlgorithm, and PyAthena::Alg.

Definition at line 66 of file AthAlgorithm.cxx.

                                       {
  StatusCode sc=AthCommonDataStore<AthCommonMsg<Algorithm>>::sysInitialize();
 
  if (sc.isFailure()) {
    return sc;
  }
  ServiceHandle<ICondSvc> cs("CondSvc",name());
  for (auto h : outputHandles()) {
    if (h->isCondition() && h->mode() == Gaudi::DataHandle::Writer) {
      // do this inside the loop so we don't create the CondSvc until needed
      if ( cs.retrieve().isFailure() ) {
        ATH_MSG_WARNING("no CondSvc found: won't autoreg WriteCondHandles");
        return StatusCode::SUCCESS;
      }
      if (cs->regHandle(this,*h).isFailure()) {
        sc = StatusCode::FAILURE;
        ATH_MSG_ERROR("unable to register WriteCondHandle " << h->fullKey()
                      << " with CondSvc");
      }
    }
  }
  return sc;
}

sysStart()

virtual StatusCode AthCommonDataStore< AthCommonMsg< Algorithm > >::sysStart ( )

overridevirtualinherited

Handle START transition.

We override this in order to make sure that conditions handle keys can cache a pointer to the conditions container.

updateVHKA()

void AthCommonDataStore< AthCommonMsg< Algorithm > >::updateVHKA ( Gaudi::Details::PropertyBase & )

inlineinherited

Definition at line 308 of file AthCommonDataStore.h.

                                               {
    // debug() << "updateVHKA for property " << p.name() << " " << p.toString() 
    //         << "  size: " << m_vhka.size() << endmsg;
    for (auto &a : m_vhka) {
      std::vector<SG::VarHandleKey*> keys = a->keys();
      for (auto k : keys) {
        k->setOwner(this);
      }
    }
  }

Member Data Documentation

kMaxParticles

const size_t Epos::kMaxParticles {10000}

inlinestaticprotected

Definition at line 65 of file Epos.h.

{10000};

m_beamMomentum

double Epos::m_beamMomentum

protected

Definition at line 47 of file Epos.h.

m_degymx

double Epos::m_degymx

protected

Definition at line 57 of file Epos.h.

m_detStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< Algorithm > >::m_detStore

privateinherited

Pointer to StoreGate (detector store by default)

Definition at line 393 of file AthCommonDataStore.h.

m_dsid

IntegerProperty Epos::m_dsid {this, "Dsid", 999999}

protected

Definition at line 60 of file Epos.h.

{this, "Dsid", 999999};

m_events

int Epos::m_events

protected

Definition at line 42 of file Epos.h.

m_evtStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< Algorithm > >::m_evtStore

privateinherited

Pointer to StoreGate (event store by default)

Definition at line 390 of file AthCommonDataStore.h.

m_extendedExtraObjects

DataObjIDColl AthAlgorithm::m_extendedExtraObjects

privateinherited

Definition at line 79 of file AthAlgorithm.h.

m_ievent

int Epos::m_ievent

protected

Definition at line 43 of file Epos.h.

m_ilheout

int Epos::m_ilheout

protected

Definition at line 55 of file Epos.h.

m_incidentSvc

ServiceHandle<IIncidentSvc> GenModule::m_incidentSvc {this, "IncidentSvc", "IncidentSvc"}

privateinherited

Handle on the incident service.

Definition at line 101 of file GenModule.h.

{this, "IncidentSvc", "IncidentSvc"};

m_interface

CRMCinterface* Epos::m_interface

protected

Definition at line 40 of file Epos.h.

m_iout

int Epos::m_iout

protected

Definition at line 44 of file Epos.h.

m_isAfterburner

BooleanProperty GenModule::m_isAfterburner {this, "IsAfterburner", false, "Set true if generator modifies existing events rather than creating new ones"}

protectedinherited

Flag for normal vs. afterburner generators.

Definition at line 87 of file GenModule.h.

{this, "IsAfterburner", false, "Set true if generator modifies existing events rather than creating new ones"};

m_itab

int Epos::m_itab

protected

Definition at line 54 of file Epos.h.

m_lheout

std::string Epos::m_lheout

protected

Definition at line 53 of file Epos.h.

m_mcEventKey

std::string GenBase::m_mcEventKey {}

protectedinherited

StoreGate key for the MC event collection (defaults to GEN_EVENT)

Definition at line 137 of file GenBase.h.

{};

m_mcevents_const

SG::ReadHandleKey<McEventCollection> GenBase::m_mcevents_const { this, "McEventKey", "GEN_EVENT", "StoreGate key of the MC event collection" }

privateinherited

Const handle to the MC event collection.

Definition at line 163 of file GenBase.h.

{ this, "McEventKey", "GEN_EVENT", "StoreGate key of the MC event collection" };

m_mkMcEvent

BooleanProperty GenBase::m_mkMcEvent {this, "MakeMcEvent", false, "Create a new MC event collection if it doesn't exist"}

protectedinherited

Flag to determine if a new MC event collection should be made if it doesn't exist.

Definition at line 139 of file GenBase.h.

{this, "MakeMcEvent", false, "Create a new MC event collection if it doesn't exist"};

m_model

int Epos::m_model

protected

Definition at line 49 of file Epos.h.

m_nEvents

int Epos::m_nEvents

protected

Definition at line 56 of file Epos.h.

m_paramFile

std::string Epos::m_paramFile

protected

Definition at line 52 of file Epos.h.

m_partEnergy

std::vector<double> Epos::m_partEnergy

protected

Definition at line 70 of file Epos.h.

m_partID

std::vector<int> Epos::m_partID

protected

Definition at line 66 of file Epos.h.

m_partMass

std::vector<double> Epos::m_partMass

protected

Definition at line 71 of file Epos.h.

m_partPx

std::vector<double> Epos::m_partPx

protected

Definition at line 67 of file Epos.h.

m_partPy

std::vector<double> Epos::m_partPy

protected

Definition at line 68 of file Epos.h.

m_partPz

std::vector<double> Epos::m_partPz

protected

Definition at line 69 of file Epos.h.

m_partStat

std::vector<int> Epos::m_partStat

protected

Definition at line 72 of file Epos.h.

m_ppSvc

ServiceHandle<IPartPropSvc> GenBase::m_ppSvc {this, "PartPropSvc", "PartPropSvc"}

privateinherited

Handle on the particle property service.

Definition at line 160 of file GenBase.h.

{this, "PartPropSvc", "PartPropSvc"};

m_primaryParticle

int Epos::m_primaryParticle

protected

Definition at line 50 of file Epos.h.

m_randomSeed

IntegerProperty GenModule::m_randomSeed {this, "RandomSeed", 1234567, "Random seed for the built-in random engine"}

protectedinherited

Seed for random number engine.

Definition at line 84 of file GenModule.h.

{this, "RandomSeed", 1234567, "Random seed for the built-in random engine"}; // FIXME make this into an unsigned long int?

m_rndmSvc

ServiceHandle<IAthRNGSvc> GenModule::m_rndmSvc {this, "RndmSvc", "AthRNGSvc"}

privateinherited

Data members.

Definition at line 99 of file GenModule.h.

{this, "RndmSvc", "AthRNGSvc"};

m_seeds

std::vector<long int> Epos::m_seeds

protected

Definition at line 74 of file Epos.h.

m_targetMomentum

double Epos::m_targetMomentum

protected

Definition at line 48 of file Epos.h.

m_targetParticle

int Epos::m_targetParticle

protected

Definition at line 51 of file Epos.h.

m_varHandleArraysDeclared

bool AthCommonDataStore< AthCommonMsg< Algorithm > >::m_varHandleArraysDeclared

privateinherited

Definition at line 399 of file AthCommonDataStore.h.

m_vhka

std::vector<SG::VarHandleKeyArray*> AthCommonDataStore< AthCommonMsg< Algorithm > >::m_vhka

privateinherited

Definition at line 398 of file AthCommonDataStore.h.

---

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

• Epos.h
• Epos.cxx