#include <RandomtXiGunProducer.h>

Inheritance diagram for edm::RandomtXiGunProducer:

Public Member Functions
	RandomtXiGunProducer (const ParameterSet &)

	~RandomtXiGunProducer () override

Public Member Functions inherited from edm::BaseRandomtXiGunProducer
	BaseRandomtXiGunProducer (const ParameterSet &)

void	beginRun (const edm::Run &r, const edm::EventSetup &) override

void	endRun (const edm::Run &r, const edm::EventSetup &) override

void	endRunProduce (edm::Run &r, const edm::EventSetup &) override

	~BaseRandomtXiGunProducer () override

Public Member Functions inherited from edm::one::EDProducer< one::WatchRuns, EndRunProducer >
	EDProducer ()=default

	EDProducer (const EDProducer &)=delete

SerialTaskQueue *	globalLuminosityBlocksQueue () final

SerialTaskQueue *	globalRunsQueue () final

bool	hasAbilityToProduceInBeginLumis () const final

bool	hasAbilityToProduceInBeginProcessBlocks () const final

bool	hasAbilityToProduceInBeginRuns () const final

bool	hasAbilityToProduceInEndLumis () const final

bool	hasAbilityToProduceInEndProcessBlocks () const final

bool	hasAbilityToProduceInEndRuns () const final

const EDProducer &	operator= (const EDProducer &)=delete

bool	wantsGlobalLuminosityBlocks () const final

bool	wantsGlobalRuns () const final

bool	wantsInputProcessBlocks () const final

bool	wantsProcessBlocks () const final

Public Member Functions inherited from edm::one::EDProducerBase
	EDProducerBase ()

ModuleDescription const &	moduleDescription () const

bool	wantsStreamLuminosityBlocks () const

bool	wantsStreamRuns () const

	~EDProducerBase () override

Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

std::vector < edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const

	ProducerBase ()

std::vector < edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...

void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)

	~ProducerBase () noexcept(false) override

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...

	EDConsumerBase ()

	EDConsumerBase (EDConsumerBase const &)=delete

	EDConsumerBase (EDConsumerBase &&)=default

ESProxyIndex const *	esGetTokenIndices (edm::Transition iTrans) const

std::vector< ESProxyIndex > const &	esGetTokenIndicesVector (edm::Transition iTrans) const

std::vector< ESRecordIndex > const &	esGetTokenRecordIndicesVector (edm::Transition iTrans) const

ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

std::vector < ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesWhoseProductsAreConsumed (std::array< std::vector< ModuleDescription const * > , NumBranchTypes > &modulesAll, std::vector< ModuleProcessName > &modulesInPreviousProcesses, ProductRegistry const &preg, std::map< std::string, ModuleDescription const > const &labelsToDesc, std::string const &processName) const

EDConsumerBase const &	operator= (EDConsumerBase const &)=delete

EDConsumerBase &	operator= (EDConsumerBase &&)=default

bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

void	selectInputProcessBlocks (ProductRegistry const &productRegistry, ProcessBlockHelperBase const &processBlockHelperBase)

ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const

void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)

void	updateLookup (eventsetup::ESRecordsToProxyIndices const &)

virtual	~EDConsumerBase () noexcept(false)

Protected Attributes
double	fMaxt

double	fMaxXi

double	fMint

double	fMinXi

Protected Attributes inherited from edm::BaseRandomtXiGunProducer
double	fECMS

HepMC::GenEvent *	fEvt

bool	fFireBackward

bool	fFireForward

bool	fLog_t

double	fMaxPhi

double	fMinPhi

std::vector< int >	fPartIDs

ESHandle < HepPDT::ParticleDataTable >	fPDGTable

double	fpEnergy

int	fVerbosity

const HepPDT::ParticleData *	PData

Private Member Functions
HepMC::FourVector	make_particle (double t, double Xi, double phi, int PartID, int direction)

double	Minimum_t (double xi)

void	produce (Event &e, const EventSetup &es) override

Additional Inherited Members
Public Types inherited from edm::one::EDProducerBase
typedef EDProducerBase	ModuleType

Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const , const char , edm::ProductResolverIndex >>

typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Static Public Member Functions inherited from edm::one::EDProducerBase
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::ProducerBase
ProducesCollector	producesCollector ()

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

template<BranchType B = InEvent>
EDConsumerBaseAdaptor< B >	consumes (edm::InputTag tag) noexcept

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes ()

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag const &tag)

template<Transition Tr = Transition::Event>
constexpr auto	esConsumes () noexcept

template<Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag tag) noexcept

template<Transition Tr = Transition::Event>
ESGetTokenGeneric	esConsumes (eventsetup::EventSetupRecordKey const &iRecord, eventsetup::DataKey const &iKey)
	Used with EventSetupRecord::doGet. More...

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

void	resetItemsToGetFrom (BranchType iType)

Detailed Description

Definition at line 9 of file RandomtXiGunProducer.h.

Constructor & Destructor Documentation

RandomtXiGunProducer::RandomtXiGunProducer ( const ParameterSet & pset )

Definition at line 25 of file RandomtXiGunProducer.cc.

References edm::BaseRandomtXiGunProducer::fLog_t, fMaxt, fMaxXi, fMint, fMinXi, edm::ParameterSet::getParameter(), and edm::ParameterSet::getUntrackedParameter().

                                                                       : BaseRandomtXiGunProducer(pset) {
   ParameterSet defpset;
   edm::ParameterSet pgun_params = pset.getParameter<edm::ParameterSet>("PGunParameters");
 
   fMint = pgun_params.getParameter<double>("Mint");
   fMaxt = pgun_params.getParameter<double>("Maxt");
   fMinXi = pgun_params.getParameter<double>("MinXi");
   fMaxXi = pgun_params.getParameter<double>("MaxXi");
   fLog_t = pgun_params.getUntrackedParameter<bool>("Log_t", false);
 
   produces<HepMCProduct>("unsmeared");
   produces<GenEventInfoProduct>();
 }

RandomtXiGunProducer::~RandomtXiGunProducer ( )

override

Definition at line 39 of file RandomtXiGunProducer.cc.

                                             {
   // no need to cleanup GenEvent memory - done in HepMCProduct
 }

Member Function Documentation

HepMC::FourVector RandomtXiGunProducer::make_particle	(	double	t,
		double	Xi,
		double	phi,
		int	PartID,
		int	direction
	)

private

Definition at line 141 of file RandomtXiGunProducer.cc.

References funct::cos(), edm::BaseRandomtXiGunProducer::fpEnergy, edm::BaseRandomtXiGunProducer::fVerbosity, ResonanceBuilder::mass, edm::BaseRandomtXiGunProducer::PData, funct::sin(), mathSSE::sqrt(), and theta().

Referenced by produce().

                                                                                                               {
   double mass = PData->mass().value();
   double fpMom = sqrt(fpEnergy * fpEnergy - mass * mass);  // momentum of beam proton
   double sEnergy = (1.0 - Xi) * fpEnergy;                  // energy of scattered particle
   double sMom = sqrt(sEnergy * sEnergy - mass * mass);     // momentum of scattered particle
   double min_t = -2. * (fpMom * sMom - fpEnergy * sEnergy + mass * mass);
   if (t < min_t)
     t = min_t;  // protect against kinemactically forbiden region
   long double theta = acos((-t / 2. - mass * mass + fpEnergy * sEnergy) / (sMom * fpMom));  // use t = -t
 
   if (direction < 1)
     theta = acos(-1.) - theta;
 
   double px = sMom * cos(phi) * sin(theta);
   double py = sMom * sin(phi) * sin(theta);
   double pz = sMom * cos(theta);  // the direction is already set by the theta angle
   if (fVerbosity > 0)
     edm::LogInfo("RandomXiGunProducer")
         << "-----------------------------------------------------------------------------------------------------\n"
         << "Produced a proton with  phi : " << phi << " theta: " << theta << " t: " << t << " Xi: " << Xi << "\n"
         << "                         Px : " << px << " Py : " << py << " Pz : " << pz << "\n"
         << "                   direction: " << direction << "\n"
         << "-----------------------------------------------------------------------------------------------------"
         << std::endl;
 
   return HepMC::FourVector(px, py, pz, sEnergy);
 }

double edm::RandomtXiGunProducer::Minimum_t ( double xi )

inlineprivate

Definition at line 18 of file RandomtXiGunProducer.h.

References edm::BaseRandomtXiGunProducer::fpEnergy, edm::BaseRandomtXiGunProducer::PData, funct::pow(), and mathSSE::sqrt().

Referenced by produce().

                                 {
       double partE = fpEnergy * (1. - xi);
       double massSQ = pow(PData->mass().value(), 2);
       double partP = sqrt(partE * partE - massSQ);
       return -2. * (sqrt(fpEnergy * fpEnergy - massSQ) * partP - fpEnergy * partE + massSQ);
     };

void RandomtXiGunProducer::produce	(	edm::Event &	e,
		const EventSetup &	es
	)

overrideprivatevirtual

Implements edm::one::EDProducerBase.

Definition at line 43 of file RandomtXiGunProducer.cc.

                                                                        {
   edm::Service<edm::RandomNumberGenerator> rng;
   CLHEP::HepRandomEngine* engine = &rng->getEngine(e.streamID());
 
   if (fVerbosity > 0) {
     edm::LogInfo("RandomtXiGunProducer") << "Begin New Event Generation\n";
   }
   // event loop (well, another step in it...)
 
   // no need to clean up GenEvent memory - done in HepMCProduct
   //
 
   // here re-create fEvt (memory)
   //
   fEvt = new HepMC::GenEvent();
 
   // now actualy, cook up the event from PDGTable and gun parameters
   //
   // 1st, primary vertex
   //
   HepMC::GenVertex* Vtx = new HepMC::GenVertex(HepMC::FourVector(0., 0., 0.));
 
   // loop over particles
   //
   int barcode = 1;
   for (unsigned int ip = 0; ip < fPartIDs.size(); ++ip) {
     int PartID = fPartIDs[ip];
     //  t = -2*P*P'*(1-cos(theta)) -> t/(2*P*P')+1=cos(theta)
     // xi = 1 - P'/P  --> P'= (1-xi)*P
     //
     PData = fPDGTable->particle(HepPDT::ParticleID(abs(PartID)));
     if (!PData)
       exit(1);
     double t = 0;
     double Xi = 0;
     double phi = 0;
     if (fFireForward) {
       while (true) {
         Xi = CLHEP::RandFlat::shoot(engine, fMinXi, fMaxXi);
         double min_t = std::max(fMint, Minimum_t(Xi));
         double max_t = fMaxt;
         if (min_t > max_t) {
           edm::LogInfo("RandomtXiGunProducer") << "WARNING: t limits redefined (unphysical values for given xi).\n";
           max_t = min_t;
         }
         t = (fLog_t) ? pow(CLHEP::RandFlat::shoot(engine, log10(min_t), log10(max_t)), 10)
                      : CLHEP::RandFlat::shoot(engine, min_t, max_t);
         break;
       }
       phi = CLHEP::RandFlat::shoot(engine, fMinPhi, fMaxPhi);
       HepMC::GenParticle* Part = new HepMC::GenParticle(make_particle(t, Xi, phi, PartID, 1), PartID, 1);
       Part->suggest_barcode(barcode);
       barcode++;
       Vtx->add_particle_out(Part);
     }
     if (fFireBackward) {
       while (true) {
         Xi = CLHEP::RandFlat::shoot(engine, fMinXi, fMaxXi);
         double min_t = std::max(fMint, Minimum_t(Xi));
         double max_t = fMaxt;
         if (min_t > max_t) {
           edm::LogInfo("RandomtXiGunProducer")
               << "WARNING: t limits redefined (unphysical values for given xi)." << endl;
           max_t = min_t;
         }
         t = (fLog_t) ? pow(CLHEP::RandFlat::shoot(engine, log10(min_t), log10(max_t)), 10)
                      : CLHEP::RandFlat::shoot(engine, min_t, max_t);
         break;
       }
       phi = CLHEP::RandFlat::shoot(engine, fMinPhi, fMaxPhi);
       HepMC::GenParticle* Part2 = new HepMC::GenParticle(make_particle(t, Xi, phi, PartID, -1), PartID, 1);
       Part2->suggest_barcode(barcode);
       barcode++;
       Vtx->add_particle_out(Part2);
     }
   }
 
   fEvt->add_vertex(Vtx);
   fEvt->set_event_number(e.id().event());
   fEvt->set_signal_process_id(20);
 
   if (fVerbosity > 0) {
     fEvt->print();
   }
 
   std::unique_ptr<HepMCProduct> BProduct(new HepMCProduct());
   BProduct->addHepMCData(fEvt);
   e.put(std::move(BProduct), "unsmeared");
 
   std::unique_ptr<GenEventInfoProduct> genEventInfo(new GenEventInfoProduct(fEvt));
   e.put(std::move(genEventInfo));
 
   if (fVerbosity > 0) {
     // for testing purpose only
     // fEvt->print() ; // prints empty info after it's made into edm::Event
     edm::LogInfo("RandomtXiGunProducer") << " Event Generation Done \n";
   }
 }