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#include <FastSimulation/MuonSimHitProducer/src/MuonSimHitProducer.cc>
Description: <one line="" class="" summary>="">
Implementation: <Notes on="" implementation>="">
Description: Fast simulation producer of Muon Sim Hits (to be used for realistic Muon reconstruction)
Implementation: <Notes on="" implementation>="">
Definition at line 57 of file MuonSimHitProducer.h.
| MuonSimHitProducer::MuonSimHitProducer | ( | const edm::ParameterSet & | iConfig | ) | [explicit] |
Definition at line 80 of file MuonSimHitProducer.cc.
References Exception, edm::ParameterSet::getParameter(), edm::Service< T >::isAvailable(), MuonServiceProxy_cff::MuonServiceProxy, random, readParameters(), and theService.
: theEstimator(iConfig.getParameter<double>("Chi2EstimatorCut")), propagatorWithoutMaterial(0) { // // Initialize the random number generator service // edm::Service<edm::RandomNumberGenerator> rng; if ( ! rng.isAvailable() ) { throw cms::Exception("Configuration") << "MuonSimHitProducer requires the RandomGeneratorService \n" "which is not present in the configuration file. \n" "You must add the service in the configuration file\n" "or remove the module that requires it."; } random = new RandomEngine(&(*rng)); // Read relevant parameters readParameters(iConfig.getParameter<edm::ParameterSet>("MUONS"), iConfig.getParameter<edm::ParameterSet>("TRACKS"), iConfig.getParameter<edm::ParameterSet>("MaterialEffectsForMuons")); // // register your products ... need to declare at least one possible product... // produces<edm::PSimHitContainer>("MuonCSCHits"); produces<edm::PSimHitContainer>("MuonDTHits"); produces<edm::PSimHitContainer>("MuonRPCHits"); edm::ParameterSet serviceParameters = iConfig.getParameter<edm::ParameterSet>("ServiceParameters"); theService = new MuonServiceProxy(serviceParameters); }
| MuonSimHitProducer::~MuonSimHitProducer | ( | ) |
Definition at line 147 of file MuonSimHitProducer.cc.
References propagatorWithoutMaterial, random, and theMaterialEffects.
{
// do anything here that needs to be done at destruction time
// (e.g. close files, deallocate resources etc.)
if ( random ) {
delete random;
}
if ( theMaterialEffects ) delete theMaterialEffects;
if ( propagatorWithoutMaterial) delete propagatorWithoutMaterial;
}
| void MuonSimHitProducer::applyMaterialEffects | ( | TrajectoryStateOnSurface & | tsosWithdEdx, |
| TrajectoryStateOnSurface & | tsos, | ||
| double | radPath | ||
| ) | [private] |
Simulate material effects in iron (dE/dx, multiple scattering)
Definition at line 588 of file MuonSimHitProducer.cc.
References TrajectoryStateOnSurface::charge(), DeDxDiscriminatorTools::charge(), EnergyLossSimulator::deltaMom(), MaterialEffects::energyLossSimulator(), TrajectoryStateOnSurface::globalMomentum(), TrajectoryStateOnSurface::globalPosition(), PV3DBase< T, PVType, FrameType >::mag2(), magfield, RawParticle::momentum(), EnergyLossSimulator::mostLikelyLoss(), RPCpg::mu, MaterialEffects::multipleScatteringSimulator(), MaterialEffects::muonBremsstrahlungSimulator(), position, RawParticle::setID(), MaterialEffectsSimulator::setNormalVector(), RawParticle::setVertex(), mathSSE::sqrt(), TrajectoryStateOnSurface::surface(), Surface::tangentPlane(), theMaterialEffects, MaterialEffectsSimulator::updateState(), RawParticle::vertex(), PV3DBase< T, PVType, FrameType >::x(), RawParticle::X(), PV3DBase< T, PVType, FrameType >::y(), RawParticle::Y(), PV3DBase< T, PVType, FrameType >::z(), and RawParticle::Z().
Referenced by produce().
{
// The energy loss simulator
EnergyLossSimulator* energyLoss = theMaterialEffects->energyLossSimulator();
// The multiple scattering simulator
MultipleScatteringSimulator* multipleScattering = theMaterialEffects->multipleScatteringSimulator();
// The Muon Bremsstrahlung simulator
MuonBremsstrahlungSimulator* bremsstrahlung = theMaterialEffects->muonBremsstrahlungSimulator();
// Initialize the Particle position, momentum and energy
const Surface& nextSurface = tsos.surface();
GlobalPoint gPos = energyLoss ? tsos.globalPosition() : tsosWithdEdx.globalPosition();
GlobalVector gMom = energyLoss ? tsos.globalMomentum() : tsosWithdEdx.globalMomentum();
double mu = 0.1056583692;
double en = std::sqrt(gMom.mag2()+mu*mu);
// And now create the Particle
XYZTLorentzVector position(gPos.x(),gPos.y(),gPos.z(),0.);
XYZTLorentzVector momentum(gMom.x(),gMom.y(),gMom.z(),en);
float charge = (float)(tsos.charge());
ParticlePropagator theMuon(momentum,position,charge,0);
theMuon.setID(-(int)charge*13);
// Recompute the energy loss to get the fluctuations
if ( energyLoss ) {
// Difference between with and without dE/dx (average only)
// (for corrections once fluctuations are applied)
GlobalPoint gPosWithdEdx = tsosWithdEdx.globalPosition();
GlobalVector gMomWithdEdx = tsosWithdEdx.globalMomentum();
double enWithdEdx = std::sqrt(gMomWithdEdx.mag2()+mu*mu);
XYZTLorentzVector
deltaPos(gPosWithdEdx.x()-gPos.x(),gPosWithdEdx.y()-gPos.y(),
gPosWithdEdx.z()-gPos.z(),0.);
XYZTLorentzVector
deltaMom(gMomWithdEdx.x()-gMom.x(),gMomWithdEdx.y()-gMom.y(),
gMomWithdEdx.z()-gMom.z(), enWithdEdx -en);
// Energy loss in iron (+ fluctuations)
energyLoss->updateState(theMuon,radPath);
// Correcting factors to account for slight differences in material descriptions
// (Material description is more accurate in the stepping helix propagator)
radPath *= -deltaMom.E()/energyLoss->mostLikelyLoss();
double fac = energyLoss->deltaMom().E()/energyLoss->mostLikelyLoss();
// Particle momentum & position after energy loss + fluctuation
XYZTLorentzVector theNewMomentum = theMuon.momentum() + energyLoss->deltaMom() + fac * deltaMom;
XYZTLorentzVector theNewPosition = theMuon.vertex() + fac * deltaPos;
fac = (theNewMomentum.E()*theNewMomentum.E()-mu*mu)/theNewMomentum.Vect().Mag2();
fac = fac>0.? std::sqrt(fac) : 1E-9;
theMuon.SetXYZT(theNewMomentum.Px()*fac,theNewMomentum.Py()*fac,
theNewMomentum.Pz()*fac,theNewMomentum.E());
theMuon.setVertex(theNewPosition);
}
// Does the actual mutliple scattering
if ( multipleScattering ) {
// Pass the vector normal to the "next" surface
GlobalVector normal = nextSurface.tangentPlane(tsos.globalPosition())->normalVector();
multipleScattering->setNormalVector(normal);
// Compute the amount of multiple scattering after a given path length
multipleScattering->updateState(theMuon,radPath);
}
// Muon Bremsstrahlung
if ( bremsstrahlung ) {
// Compute the amount of Muon Bremsstrahlung after given path length
bremsstrahlung->updateState(theMuon,radPath);
}
// Fill the propagated state
GlobalPoint propagatedPosition(theMuon.X(),theMuon.Y(),theMuon.Z());
GlobalVector propagatedMomentum(theMuon.Px(),theMuon.Py(),theMuon.Pz());
GlobalTrajectoryParameters propagatedGtp(propagatedPosition,propagatedMomentum,(int)charge,magfield);
tsosWithdEdx = TrajectoryStateOnSurface(propagatedGtp,nextSurface);
}
| void MuonSimHitProducer::beginRun | ( | edm::Run & | run, |
| const edm::EventSetup & | es | ||
| ) | [private, virtual] |
Reimplemented from edm::EDProducer.
Definition at line 118 of file MuonSimHitProducer.cc.
References Propagator::clone(), cscGeom, dtGeom, edm::EventSetup::get(), magfield, LargeD0_PixelPairStep_cff::propagator, MuonServiceProxy::propagator(), propagatorWithMaterial, propagatorWithoutMaterial, rpcGeom, SteppingHelixPropagator::setMaterialMode(), theService, and MuonServiceProxy::update().
{
//services
edm::ESHandle<MagneticField> magField;
edm::ESHandle<DTGeometry> dtGeometry;
edm::ESHandle<CSCGeometry> cscGeometry;
edm::ESHandle<RPCGeometry> rpcGeometry;
edm::ESHandle<Propagator> propagator;
es.get<IdealMagneticFieldRecord>().get(magField);
es.get<MuonGeometryRecord>().get("MisAligned",dtGeometry);
es.get<MuonGeometryRecord>().get("MisAligned",cscGeometry);
es.get<MuonGeometryRecord>().get(rpcGeometry);
magfield = &(*magField);
dtGeom = &(*dtGeometry);
cscGeom = &(*cscGeometry);
rpcGeom = &(*rpcGeometry);
theService->update(es);
// A few propagators
propagatorWithMaterial = &(*(theService->propagator("SteppingHelixPropagatorAny")));
propagatorWithoutMaterial = propagatorWithMaterial->clone();
SteppingHelixPropagator* SHpropagator = dynamic_cast<SteppingHelixPropagator*> (propagatorWithoutMaterial); // Beuark!
SHpropagator->setMaterialMode(true); // switches OFF material effects;
}
| void MuonSimHitProducer::endJob | ( | void | ) | [private, virtual] |
| void MuonSimHitProducer::produce | ( | edm::Event & | iEvent, |
| const edm::EventSetup & | iSetup | ||
| ) | [private, virtual] |
Implements edm::EDProducer.
Definition at line 168 of file MuonSimHitProducer.cc.
References abs, alongMomentum, anyDirection, applyMaterialEffects(), PV3DBase< T, PVType, FrameType >::basicVector(), BoundSurface::bounds(), RPCGeometry::chamber(), DTGeometry::chamber(), CSCGeometry::chamber(), DTTopology::channel(), CoreSimTrack::charge(), gather_cfg::cout, Vector3DBase< T, FrameTag >::cross(), CSC(), cscGeom, MuonServiceProxy::detLayerGeometry(), GeomDetEnumerators::DT, dtGeom, MuonPatternRecoDumper::dumpLayer(), CSCDetId::endcap(), cmsRelvalreport::exit, create_public_lumi_plots::exp, fCSC, fDT, DTTopology::firstChannel(), RandomEngine::flatShoot(), TrajectoryStateOnSurface::freeTrajectoryState(), GeomDet::geographicalId(), edm::Event::getByLabel(), SteppingHelixStateInfo::getStateOnSurface(), TrajectoryStateOnSurface::globalMomentum(), TrajectoryStateOnSurface::globalPosition(), i, errorMatrix2Lands_multiChannel::id, CSCGeometry::idToDetUnit(), RPCGeometry::idToDetUnit(), DTGeometry::idToDetUnit(), CSCLayerGeometry::inside(), Bounds::inside(), TrajectoryStateOnSurface::isValid(), kCSC, kDT, DTTopology::lastChannel(), DTLayerId::layer(), CSCDetId::layer(), RPCDetId::layer(), CSCChamber::layers(), TrajectoryStateOnSurface::localMomentum(), create_public_lumi_plots::log, m, PV3DBase< T, PVType, FrameType >::mag(), magfield, CoreSimTrack::momentum(), n, scaleCards::path, SteppingHelixStateInfo::path(), PV3DBase< T, PVType, FrameType >::phi(), pi, evf::utils::pid, PlaneBuilder::plane(), position, Propagator::propagateWithPath(), propagatorWithMaterial, propagatorWithoutMaterial, edm::Event::put(), SteppingHelixStateInfo::radPath(), random, DetId::rawId(), RPCDetId::ring(), CSCDetId::ring(), relativeConstraints::ring, RPCDetId::roll(), RPCChamber::rolls(), makeMuonMisalignmentScenario::rot, GeomDetEnumerators::RPCBarrel, GeomDetEnumerators::RPCEndcap, rpcGeom, RPCDetId::sector(), DTChamberId::sector(), mathSSE::sqrt(), relativeConstraints::station, RPCDetId::station(), CSCDetId::station(), DTChamberId::station(), GeomDet::subDetector(), RPCDetId::subsector(), DTSuperLayerId::superlayer(), DTChamber::superLayers(), GeomDet::surface(), theEstimator, theMaterialEffects, theService, theSimModuleLabel_, theSimModuleProcess_, PV3DBase< T, PVType, FrameType >::theta(), Bounds::thickness(), GeomDet::toLocal(), SimTrack::trackerSurfaceMomentum(), SimTrack::trackerSurfacePosition(), CoreSimTrack::trackId(), TrajectoryStateOnSurface::transverseCurvature(), CoreSimTrack::type(), Vector3DBase< T, FrameTag >::unit(), SimTrack::vertIndex(), DTChamberId::wheel(), PV3DBase< T, PVType, FrameType >::x(), x, PV3DBase< T, PVType, FrameType >::y(), detailsBasic3DVector::y, PV3DBase< T, PVType, FrameType >::z(), and z.
{
// using namespace edm;
// using namespace std;
MuonPatternRecoDumper dumper;
edm::Handle<std::vector<SimTrack> > simMuons;
edm::Handle<std::vector<SimVertex> > simVertices;
std::vector<PSimHit> theCSCHits;
std::vector<PSimHit> theDTHits;
std::vector<PSimHit> theRPCHits;
DirectMuonNavigation navigation(theService->detLayerGeometry());
iEvent.getByLabel(theSimModuleLabel_,theSimModuleProcess_,simMuons);
iEvent.getByLabel(theSimModuleLabel_,simVertices);
for ( unsigned int itrk=0; itrk<simMuons->size(); itrk++ ) {
const SimTrack &mySimTrack = (*simMuons)[itrk];
math::XYZTLorentzVector mySimP4(mySimTrack.momentum().x(),
mySimTrack.momentum().y(),
mySimTrack.momentum().z(),
mySimTrack.momentum().t());
// Decaying hadrons are now in the list, and so are their muon daughter
// Ignore the hadrons here.
int pid = mySimTrack.type();
if ( abs(pid) != 13 ) continue;
double t0 = 0;
GlobalPoint initialPosition;
int ivert = mySimTrack.vertIndex();
if ( ivert >= 0 ) {
t0 = (*simVertices)[ivert].position().t();
GlobalPoint xyzzy((*simVertices)[ivert].position().x(),
(*simVertices)[ivert].position().y(),
(*simVertices)[ivert].position().z());
initialPosition = xyzzy;
}
//
// Presumably t0 has dimensions of cm if not mm?
// Convert to ns for internal calculations.
// I wonder where we should get c from?
//
double tof = t0/29.98;
#ifdef FAMOS_DEBUG
std::cout << " ===> MuonSimHitProducer::reconstruct() found SIMTRACK - pid = "
<< pid ;
std::cout << " : pT = " << mySimP4.Pt()
<< ", eta = " << mySimP4.Eta()
<< ", phi = " << mySimP4.Phi() << std::endl;
#endif
//
// Produce muons sim hits starting from undecayed simulated muons
//
GlobalPoint startingPosition(mySimTrack.trackerSurfacePosition().x(),
mySimTrack.trackerSurfacePosition().y(),
mySimTrack.trackerSurfacePosition().z());
GlobalVector startingMomentum(mySimTrack.trackerSurfaceMomentum().x(),
mySimTrack.trackerSurfaceMomentum().y(),
mySimTrack.trackerSurfaceMomentum().z());
//
// Crap... there's no time-of-flight to the trackerSurfacePosition()...
// So, this will be wrong when the curvature can't be neglected, but that
// will be rather seldom... May as well ignore the mass too.
//
GlobalVector dtracker = startingPosition-initialPosition;
tof += dtracker.mag()/29.98;
#ifdef FAMOS_DEBUG
std::cout << " the Muon START position " << startingPosition << std::endl;
std::cout << " the Muon START momentum " << startingMomentum << std::endl;
#endif
//
// Some magic to define a TrajectoryStateOnSurface
//
PlaneBuilder pb;
GlobalVector zAxis = startingMomentum.unit();
GlobalVector yAxis(zAxis.y(),-zAxis.x(),0);
GlobalVector xAxis = yAxis.cross(zAxis);
Surface::RotationType rot = Surface::RotationType(xAxis,yAxis,zAxis);
PlaneBuilder::ReturnType startingPlane = pb.plane(startingPosition,rot);
GlobalTrajectoryParameters gtp(startingPosition,
startingMomentum,
(int)mySimTrack.charge(),
magfield);
TrajectoryStateOnSurface startingState(gtp,*startingPlane);
std::vector<const DetLayer *> navLayers;
if ( fabs(startingState.globalMomentum().eta()) > 4.5 ) {
navLayers = navigation.compatibleEndcapLayers(*(startingState.freeState()),
alongMomentum);
}
else {
navLayers = navigation.compatibleLayers(*(startingState.freeState()),
alongMomentum);
}
/*
edm::ESHandle<Propagator> propagator =
theService->propagator("SteppingHelixPropagatorAny");
*/
if ( navLayers.empty() ) continue;
#ifdef FAMOS_DEBUG
std::cout << "Found " << navLayers.size()
<< " compatible DetLayers..." << std::endl;
#endif
TrajectoryStateOnSurface propagatedState = startingState;
for ( unsigned int ilayer=0; ilayer<navLayers.size(); ilayer++ ) {
#ifdef FAMOS_DEBUG
std::cout << "Propagating to layer " << ilayer << " "
<< dumper.dumpLayer(navLayers[ilayer])
<< std::endl;
#endif
std::vector<DetWithState> comps =
navLayers[ilayer]->compatibleDets(propagatedState,*propagatorWithMaterial,theEstimator);
if ( comps.empty() ) continue;
#ifdef FAMOS_DEBUG
std::cout << "Propagating " << propagatedState << std::endl;
#endif
// Starting momentum
double pi = propagatedState.globalMomentum().mag();
// Propagate with material effects (dE/dx average only)
SteppingHelixStateInfo shsStart(*(propagatedState.freeTrajectoryState()));
const SteppingHelixStateInfo& shsDest =
((const SteppingHelixPropagator*)propagatorWithMaterial)->propagate(shsStart,navLayers[ilayer]->surface());
std::pair<TrajectoryStateOnSurface,double> next(shsDest.getStateOnSurface(navLayers[ilayer]->surface()),
shsDest.path());
// No need to continue if there is no valid propagation available.
// This happens rarely (~0.1% of ttbar events)
if ( !next.first.isValid() ) continue;
// This is the estimate of the number of radiation lengths traversed,
// together with the total path length
double radPath = shsDest.radPath();
double pathLength = next.second;
// Now propagate without dE/dx (average)
// [To add the dE/dx fluctuations to the actual dE/dx]
std::pair<TrajectoryStateOnSurface,double> nextNoMaterial =
propagatorWithoutMaterial->propagateWithPath(propagatedState,navLayers[ilayer]->surface());
// Update the propagated state
propagatedState = next.first;
double pf = propagatedState.globalMomentum().mag();
// Insert dE/dx fluctuations and multiple scattering
// Skip this step if nextNoMaterial.first is not valid
// This happens rarely (~0.02% of ttbar events)
if ( theMaterialEffects && nextNoMaterial.first.isValid() ) applyMaterialEffects(propagatedState,nextNoMaterial.first,radPath);
// Check that the 'shaken' propagatedState is still valid, otherwise continue
if ( !propagatedState.isValid() ) continue;
// (No evidence that this ever happens)
//
// Consider this... 1 GeV muon has a velocity that is only 0.5% slower than c...
// We probably can safely ignore the mass for anything that makes it out to the
// muon chambers.
//
double pavg = 0.5*(pi+pf);
double m = mySimP4.M();
double rbeta = sqrt(1+m*m/(pavg*pavg))/29.98;
double dtof = pathLength*rbeta;
#ifdef FAMOS_DEBUG
std::cout << "Propagated to next surface... path length = " << pathLength
<< " cm, dTOF = " << dtof << " ns" << std::endl;
#endif
tof += dtof;
for ( unsigned int icomp=0; icomp<comps.size(); icomp++ )
{
const GeomDet *gd = comps[icomp].first;
if ( gd->subDetector() == GeomDetEnumerators::DT ) {
DTChamberId id(gd->geographicalId());
const DTChamber *chamber = dtGeom->chamber(id);
std::vector<const DTSuperLayer *> superlayer = chamber->superLayers();
for ( unsigned int isl=0; isl<superlayer.size(); isl++ ) {
std::vector<const DTLayer *> layer = superlayer[isl]->layers();
for ( unsigned int ilayer=0; ilayer<layer.size(); ilayer++ ) {
DTLayerId lid = layer[ilayer]->id();
#ifdef FAMOS_DEBUG
std::cout << " Extrapolated to DT ("
<< lid.wheel() << ","
<< lid.station() << ","
<< lid.sector() << ","
<< lid.superlayer() << ","
<< lid.layer() << ")" << std::endl;
#endif
const GeomDetUnit *det = dtGeom->idToDetUnit(lid);
HelixArbitraryPlaneCrossing crossing(propagatedState.globalPosition().basicVector(),
propagatedState.globalMomentum().basicVector(),
propagatedState.transverseCurvature(),
anyDirection);
std::pair<bool,double> path = crossing.pathLength(det->surface());
if ( ! path.first ) continue;
LocalPoint lpos = det->toLocal(GlobalPoint(crossing.position(path.second)));
if ( ! det->surface().bounds().inside(lpos) ) continue;
const DTTopology& dtTopo = layer[ilayer]->specificTopology();
int wire = dtTopo.channel(lpos);
if (wire - dtTopo.firstChannel() < 0 || wire - dtTopo.lastChannel() > 0 ) continue;
// no drift cell here (on the chamber edge or just outside)
// this hit would otherwise be discarded downstream in the digitizer
DTWireId wid(lid,wire);
double thickness = det->surface().bounds().thickness();
LocalVector lmom = det->toLocal(GlobalVector(crossing.direction(path.second)));
lmom = lmom.unit()*propagatedState.localMomentum().mag();
// Factor that takes into account the (rec)hits lost because of delta's, etc.:
// (Not fully satisfactory patch, but it seems to work...)
double pmu = lmom.mag();
double theDTHitIneff = pmu>0? exp(kDT*log(pmu)+fDT):0.;
if (random->flatShoot()<theDTHitIneff) continue;
double eloss = 0;
double pz = fabs(lmom.z());
LocalPoint entry = lpos - 0.5*thickness*lmom/pz;
LocalPoint exit = lpos + 0.5*thickness*lmom/pz;
double dtof = path.second*rbeta;
int trkid = mySimTrack.trackId();
unsigned int id = wid.rawId();
short unsigned int processType = 2;
PSimHit hit(entry,exit,lmom.mag(),
tof+dtof,eloss,pid,id,trkid,lmom.theta(),lmom.phi(),processType);
theDTHits.push_back(hit);
}
}
}
else if ( gd->subDetector() == GeomDetEnumerators::CSC ) {
CSCDetId id(gd->geographicalId());
const CSCChamber *chamber = cscGeom->chamber(id);
std::vector<const CSCLayer *> layers = chamber->layers();
for ( unsigned int ilayer=0; ilayer<layers.size(); ilayer++ ) {
CSCDetId lid = layers[ilayer]->id();
#ifdef FAMOS_DEBUG
std::cout << " Extrapolated to CSC ("
<< lid.endcap() << ","
<< lid.ring() << ","
<< lid.station() << ","
<< lid.layer() << ")" << std::endl;
#endif
const GeomDetUnit *det = cscGeom->idToDetUnit(lid);
HelixArbitraryPlaneCrossing crossing(propagatedState.globalPosition().basicVector(),
propagatedState.globalMomentum().basicVector(),
propagatedState.transverseCurvature(),
anyDirection);
std::pair<bool,double> path = crossing.pathLength(det->surface());
if ( ! path.first ) continue;
LocalPoint lpos = det->toLocal(GlobalPoint(crossing.position(path.second)));
// For CSCs the Bounds are for chamber frames not gas regions
// if ( ! det->surface().bounds().inside(lpos) ) continue;
// New function knows where the 'active' volume is:
const CSCLayerGeometry* laygeom = layers[ilayer]->geometry();
if ( ! laygeom->inside( lpos ) ) continue;
//double thickness = laygeom->thickness(); gives number which is about 20 times too big
double thickness = det->surface().bounds().thickness(); // this one works much better...
LocalVector lmom = det->toLocal(GlobalVector(crossing.direction(path.second)));
lmom = lmom.unit()*propagatedState.localMomentum().mag();
// Factor that takes into account the (rec)hits lost because of delta's, etc.:
// (Not fully satisfactory patch, but it seems to work...)
double pmu = lmom.mag();
double theCSCHitIneff = pmu>0? exp(kCSC*log(pmu)+fCSC):0.;
// Take into account the different geometry in ME11:
if (id.station()==1 && id.ring()==1) theCSCHitIneff = theCSCHitIneff*0.442;
if (random->flatShoot()<theCSCHitIneff) continue;
double eloss = 0;
double pz = fabs(lmom.z());
LocalPoint entry = lpos - 0.5*thickness*lmom/pz;
LocalPoint exit = lpos + 0.5*thickness*lmom/pz;
double dtof = path.second*rbeta;
int trkid = mySimTrack.trackId();
unsigned int id = lid.rawId();
short unsigned int processType = 2;
PSimHit hit(entry,exit,lmom.mag(),
tof+dtof,eloss,pid,id,trkid,lmom.theta(),lmom.phi(),processType);
theCSCHits.push_back(hit);
}
}
else if ( gd->subDetector() == GeomDetEnumerators::RPCBarrel ||
gd->subDetector() == GeomDetEnumerators::RPCEndcap ) {
RPCDetId id(gd->geographicalId());
const RPCChamber *chamber = rpcGeom->chamber(id);
std::vector<const RPCRoll *> roll = chamber->rolls();
for ( unsigned int iroll=0; iroll<roll.size(); iroll++ ) {
RPCDetId rid = roll[iroll]->id();
#ifdef FAMOS_DEBUG
std::cout << " Extrapolated to RPC ("
<< rid.ring() << ","
<< rid.station() << ","
<< rid.sector() << ","
<< rid.subsector() << ","
<< rid.layer() << ","
<< rid.roll() << ")" << std::endl;
#endif
const GeomDetUnit *det = rpcGeom->idToDetUnit(rid);
HelixArbitraryPlaneCrossing crossing(propagatedState.globalPosition().basicVector(),
propagatedState.globalMomentum().basicVector(),
propagatedState.transverseCurvature(),
anyDirection);
std::pair<bool,double> path = crossing.pathLength(det->surface());
if ( ! path.first ) continue;
LocalPoint lpos = det->toLocal(GlobalPoint(crossing.position(path.second)));
if ( ! det->surface().bounds().inside(lpos) ) continue;
double thickness = det->surface().bounds().thickness();
LocalVector lmom = det->toLocal(GlobalVector(crossing.direction(path.second)));
lmom = lmom.unit()*propagatedState.localMomentum().mag();
double eloss = 0;
double pz = fabs(lmom.z());
LocalPoint entry = lpos - 0.5*thickness*lmom/pz;
LocalPoint exit = lpos + 0.5*thickness*lmom/pz;
double dtof = path.second*rbeta;
int trkid = mySimTrack.trackId();
unsigned int id = rid.rawId();
short unsigned int processType = 2;
PSimHit hit(entry,exit,lmom.mag(),
tof+dtof,eloss,pid,id,trkid,lmom.theta(),lmom.phi(),processType);
theRPCHits.push_back(hit);
}
}
else {
std::cout << "Extrapolated to unknown subdetector '" << gd->subDetector() << "'..." << std::endl;
}
}
}
}
std::auto_ptr<edm::PSimHitContainer> pcsc(new edm::PSimHitContainer);
int n = 0;
for ( std::vector<PSimHit>::const_iterator i = theCSCHits.begin();
i != theCSCHits.end(); i++ ) {
pcsc->push_back(*i);
n += 1;
}
iEvent.put(pcsc,"MuonCSCHits");
std::auto_ptr<edm::PSimHitContainer> pdt(new edm::PSimHitContainer);
n = 0;
for ( std::vector<PSimHit>::const_iterator i = theDTHits.begin();
i != theDTHits.end(); i++ ) {
pdt->push_back(*i);
n += 1;
}
iEvent.put(pdt,"MuonDTHits");
std::auto_ptr<edm::PSimHitContainer> prpc(new edm::PSimHitContainer);
n = 0;
for ( std::vector<PSimHit>::const_iterator i = theRPCHits.begin();
i != theRPCHits.end(); i++ ) {
prpc->push_back(*i);
n += 1;
}
iEvent.put(prpc,"MuonRPCHits");
}
| void MuonSimHitProducer::readParameters | ( | const edm::ParameterSet & | fastMuons, |
| const edm::ParameterSet & | fastTracks, | ||
| const edm::ParameterSet & | matEff | ||
| ) | [private] |
Definition at line 551 of file MuonSimHitProducer.cc.
References fCSC, fDT, fullPattern_, edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), kCSC, kDT, random, theMaterialEffects, theSimModuleLabel_, theSimModuleProcess_, and theTrkModuleLabel_.
Referenced by MuonSimHitProducer().
{
// Muons
theSimModuleLabel_ = fastMuons.getParameter<std::string>("simModuleLabel");
theSimModuleProcess_ = fastMuons.getParameter<std::string>("simModuleProcess");
theTrkModuleLabel_ = fastMuons.getParameter<std::string>("trackModuleLabel");
std::vector<double> simHitIneffDT = fastMuons.getParameter<std::vector<double> >("simHitDTIneffParameters");
std::vector<double> simHitIneffCSC = fastMuons.getParameter<std::vector<double> >("simHitCSCIneffParameters");
kDT = simHitIneffDT[0];
fDT = simHitIneffDT[1];
kCSC = simHitIneffCSC[0];
fCSC = simHitIneffCSC[1];
// Tracks
fullPattern_ = fastTracks.getUntrackedParameter<bool>("FullPatternRecognition");
// The following should be on LogInfo
// std::cout << " MUON SIM HITS: FastSimulation parameters " << std::endl;
// std::cout << " ============================================== " << std::endl;
// if ( fullPattern_ )
// std::cout << " The FULL pattern recognition option is turned ON" << std::endl;
// else
// std::cout << " The FAST tracking option is turned ON" << std::endl;
// Material Effects
theMaterialEffects = 0;
if ( matEff.getParameter<bool>("PairProduction") ||
matEff.getParameter<bool>("Bremsstrahlung") ||
matEff.getParameter<bool>("MuonBremsstrahlung") ||
matEff.getParameter<bool>("EnergyLoss") ||
matEff.getParameter<bool>("MultipleScattering") )
theMaterialEffects = new MaterialEffects(matEff,random);
}
const CSCGeometry* MuonSimHitProducer::cscGeom [private] |
Definition at line 71 of file MuonSimHitProducer.h.
Referenced by beginRun(), and produce().
bool MuonSimHitProducer::doGL_ [private] |
Definition at line 99 of file MuonSimHitProducer.h.
bool MuonSimHitProducer::doL1_ [private] |
Definition at line 99 of file MuonSimHitProducer.h.
bool MuonSimHitProducer::doL3_ [private] |
Definition at line 99 of file MuonSimHitProducer.h.
const DTGeometry* MuonSimHitProducer::dtGeom [private] |
Definition at line 70 of file MuonSimHitProducer.h.
Referenced by beginRun(), and produce().
double MuonSimHitProducer::fCSC [private] |
Definition at line 89 of file MuonSimHitProducer.h.
Referenced by produce(), and readParameters().
double MuonSimHitProducer::fDT [private] |
Definition at line 87 of file MuonSimHitProducer.h.
Referenced by produce(), and readParameters().
bool MuonSimHitProducer::fullPattern_ [private] |
Definition at line 98 of file MuonSimHitProducer.h.
Referenced by readParameters().
double MuonSimHitProducer::kCSC [private] |
Definition at line 88 of file MuonSimHitProducer.h.
Referenced by produce(), and readParameters().
double MuonSimHitProducer::kDT [private] |
Definition at line 86 of file MuonSimHitProducer.h.
Referenced by produce(), and readParameters().
const MagneticField* MuonSimHitProducer::magfield [private] |
Definition at line 69 of file MuonSimHitProducer.h.
Referenced by applyMaterialEffects(), beginRun(), and produce().
const Propagator* MuonSimHitProducer::propagatorWithMaterial [private] |
Definition at line 73 of file MuonSimHitProducer.h.
Referenced by beginRun(), and produce().
Definition at line 74 of file MuonSimHitProducer.h.
Referenced by beginRun(), produce(), and ~MuonSimHitProducer().
const RandomEngine* MuonSimHitProducer::random [private] |
Definition at line 65 of file MuonSimHitProducer.h.
Referenced by MuonSimHitProducer(), produce(), readParameters(), and ~MuonSimHitProducer().
const RPCGeometry* MuonSimHitProducer::rpcGeom [private] |
Definition at line 72 of file MuonSimHitProducer.h.
Referenced by beginRun(), and produce().
Definition at line 67 of file MuonSimHitProducer.h.
Referenced by produce().
Definition at line 76 of file MuonSimHitProducer.h.
Referenced by applyMaterialEffects(), produce(), readParameters(), and ~MuonSimHitProducer().
MuonServiceProxy* MuonSimHitProducer::theService [private] |
Definition at line 66 of file MuonSimHitProducer.h.
Referenced by beginRun(), MuonSimHitProducer(), and produce().
std::string MuonSimHitProducer::theSimModuleLabel_ [private] |
Definition at line 100 of file MuonSimHitProducer.h.
Referenced by produce(), and readParameters().
std::string MuonSimHitProducer::theSimModuleProcess_ [private] |
Definition at line 100 of file MuonSimHitProducer.h.
Referenced by produce(), and readParameters().
std::string MuonSimHitProducer::theTrkModuleLabel_ [private] |
Definition at line 100 of file MuonSimHitProducer.h.
Referenced by readParameters().
1.7.3