SubsystemNeutronReader Class Reference

#include <SubsystemNeutronReader.h>

Inheritance diagram for SubsystemNeutronReader:

Public Member Functions
void	clear ()
void	generateChamberNoise (int chamberType, int chamberIndex, edm::PSimHitContainer &result, CLHEP::HepRandomEngine *)
	SubsystemNeutronReader (const edm::ParameterSet &pset)
virtual	~SubsystemNeutronReader ()

Protected Member Functions
virtual int	detId (int chamberIndex, int localDetId)=0

Private Attributes
std::vector< int >	theChambersDone
	just makes sure chambers aren't done twice More...
float	theEndTime
std::vector< double >	theEventOccupancy
float	theEventsInWindow
	how many collsions happened between theStartTime and theEndTime More...
NeutronReader *	theHitReader
float	theLuminosity
	in units of 10**34, set by Muon:NeutronLuminosity More...
float	theStartTime

Detailed Description

Definition at line 20 of file SubsystemNeutronReader.h.

Constructor & Destructor Documentation

SubsystemNeutronReader()

SubsystemNeutronReader::SubsystemNeutronReader

(

const edm::ParameterSet &

pset

)

the hits will be distributed flat in time between startTime and endTime eventOccupancy is the expected chamber occupancy from a single min bias event for each chamber type

Definition at line 13 of file SubsystemNeutronReader.cc.

References input, createfilelist::int, muonDTDigis_cfi::pset, DQM::reader, theEndTime, theEventsInWindow, theHitReader, theLuminosity, and theStartTime.

    : theHitReader(nullptr),
      theLuminosity(pset.getParameter<double>("luminosity")),  // in units of 10^34
      theStartTime(pset.getParameter<double>("startTime")),
      theEndTime(pset.getParameter<double>("endTime")),
      theEventOccupancy(pset.getParameter<vector<double> >("eventOccupancy"))  // TODO make map
{
  // 17.3 collisions per live bx, 79.5% of bx live
  float collisionsPerCrossing = 13.75 * theLuminosity;
  int windowSize = (int)((theEndTime - theStartTime) / 25.);
  theEventsInWindow = collisionsPerCrossing * windowSize;
  string reader = pset.getParameter<string>("reader");
  edm::FileInPath input = pset.getParameter<edm::FileInPath>("input");
  if (reader == "ASCII") {
    theHitReader = new AsciiNeutronReader(input.fullPath());
  } else if (reader == "ROOT") {
    theHitReader = new RootNeutronReader(input.fullPath());
  }
}

~SubsystemNeutronReader()

SubsystemNeutronReader::~SubsystemNeutronReader ( )

virtual

Definition at line 33 of file SubsystemNeutronReader.cc.

References theHitReader.

{ delete theHitReader; }

Member Function Documentation

clear()

void SubsystemNeutronReader::clear ( void  )

inline

Definition at line 32 of file SubsystemNeutronReader.h.

References theChambersDone.

{ theChambersDone.clear(); }

detId()

virtual int SubsystemNeutronReader::detId ( int  chamberIndex, int  localDetId  )

protectedpure virtual

detector-specific way to get the global detector ID, given the local one.

Implemented in CSCNeutronReader.

Referenced by generateChamberNoise().

generateChamberNoise()

void SubsystemNeutronReader::generateChamberNoise	(	int	chamberType,
		int	chamberIndex,
		edm::PSimHitContainer &	result,
		CLHEP::HepRandomEngine *	engine
	)

this class makes sure the same chamberIndex isn't called twice for an event

Definition at line 35 of file SubsystemNeutronReader.cc.

References nano_mu_digi_cff::chamberType, detId(), PSimHit::detUnitId(), PSimHit::energyLoss(), PSimHit::entryPoint(), PSimHit::exitPoint(), spr::find(), mps_fire::i, PSimHit::pabs(), PSimHit::particleType(), PSimHit::phiAtEntry(), PSimHit::processType(), NeutronReader::readNextEvent(), mps_fire::result, theChambersDone, theEndTime, theEventOccupancy, theEventsInWindow, theHitReader, theStartTime, PSimHit::thetaAtEntry(), simBeamSpotPI::timeOffset, PSimHit::tof(), and PSimHit::trackId().

Referenced by CSCNeutronReader::addHits().

                                                                                {
  // make sure this chamber hasn't been done before
  if (find(theChambersDone.begin(), theChambersDone.end(), chamberIndex) == theChambersDone.end()) {
    float meanNumberOfEvents = theEventOccupancy[chamberType - 1] * theEventsInWindow;
    CLHEP::RandPoissonQ randPoissonQ(*engine, meanNumberOfEvents);
    int nEventsToAdd = randPoissonQ.fire();
    //    LogDebug("NeutronReader") << "Number of neutron events to add: "
    //std::cout << "Number of neutron events to add for chamber type " << chamberType << " : "
    // << nEventsToAdd <<  " mean " << meanNumberOfEvents << std::endl;
    //                   << nEventsToAdd <<  " mean " << meanNumberOfEvents;

    for (int i = 0; i < nEventsToAdd; ++i) {
      // find the time for this event
      float timeOffset = CLHEP::RandFlat::shoot(engine, theStartTime, theEndTime);
      vector<PSimHit> neutronHits;
      theHitReader->readNextEvent(chamberType, neutronHits);

      for (vector<PSimHit>::const_iterator neutronHitItr = neutronHits.begin(); neutronHitItr != neutronHits.end();
           ++neutronHitItr) {
        const PSimHit& rawHit = *neutronHitItr;
        // do the time offset and local det id
        int det = detId(chamberIndex, rawHit.detUnitId());
        PSimHit hit(rawHit.entryPoint(),
                    rawHit.exitPoint(),
                    rawHit.pabs(),
                    rawHit.tof() + timeOffset,
                    rawHit.energyLoss(),
                    rawHit.particleType(),
                    det,
                    rawHit.trackId(),
                    rawHit.thetaAtEntry(),
                    rawHit.phiAtEntry(),
                    rawHit.processType());
        //std::cout << "NEWHIT " << hit << std::endl;
        result.push_back(hit);
      }
    }
    theChambersDone.push_back(chamberIndex);
  }
}

Member Data Documentation

theChambersDone

std::vector<int> SubsystemNeutronReader::theChambersDone

private

just makes sure chambers aren't done twice

Definition at line 43 of file SubsystemNeutronReader.h.

Referenced by clear(), and generateChamberNoise().

theEndTime

float SubsystemNeutronReader::theEndTime

private

Definition at line 48 of file SubsystemNeutronReader.h.

Referenced by generateChamberNoise(), and SubsystemNeutronReader().

theEventOccupancy

std::vector<double> SubsystemNeutronReader::theEventOccupancy

private

Definition at line 52 of file SubsystemNeutronReader.h.

Referenced by generateChamberNoise().

theEventsInWindow

float SubsystemNeutronReader::theEventsInWindow

private

how many collsions happened between theStartTime and theEndTime

Definition at line 50 of file SubsystemNeutronReader.h.

Referenced by generateChamberNoise(), and SubsystemNeutronReader().

theHitReader

NeutronReader* SubsystemNeutronReader::theHitReader

private

Definition at line 40 of file SubsystemNeutronReader.h.

Referenced by generateChamberNoise(), SubsystemNeutronReader(), and ~SubsystemNeutronReader().

theLuminosity

float SubsystemNeutronReader::theLuminosity

private

in units of 10**34, set by Muon:NeutronLuminosity

Definition at line 46 of file SubsystemNeutronReader.h.

Referenced by SubsystemNeutronReader().

theStartTime

float SubsystemNeutronReader::theStartTime

private

Definition at line 47 of file SubsystemNeutronReader.h.

Referenced by generateChamberNoise(), and SubsystemNeutronReader().