RPCDigitizer/src/RPCSimModelTiming.cc

0001 #include "Geometry/RPCGeometry/interface/RPCRoll.h"
0002 #include "Geometry/RPCGeometry/interface/RPCRollSpecs.h"
0003 #include "SimMuon/RPCDigitizer/src/RPCSimModelTiming.h"
0004 #include "SimMuon/RPCDigitizer/src/RPCSimSetUp.h"
0005
0006 #include "SimMuon/RPCDigitizer/src/RPCSynchronizer.h"
0007 #include "Geometry/CommonTopologies/interface/RectangularStripTopology.h"
0008 #include "Geometry/CommonTopologies/interface/TrapezoidalStripTopology.h"
0009 #include "Geometry/RPCGeometry/interface/RPCGeomServ.h"
0010
0011 #include <cmath>
0012
0013 #include "FWCore/Framework/interface/Frameworkfwd.h"
0014 #include "FWCore/Framework/interface/EventSetup.h"
0015 #include "FWCore/Framework/interface/Event.h"
0016 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0017
0018 #include "SimDataFormats/TrackingHit/interface/PSimHitContainer.h"
0019 #include "SimDataFormats/TrackingHit/interface/PSimHit.h"
0020 #include "Geometry/RPCGeometry/interface/RPCGeometry.h"
0021 #include "Geometry/Records/interface/MuonGeometryRecord.h"
0022 #include "DataFormats/MuonDetId/interface/RPCDetId.h"
0023 #include "SimMuon/RPCDigitizer/src/RPCSimSetUp.h"
0024
0025 #include <cstring>
0026 #include <iostream>
0027 #include <fstream>
0028 #include <string>
0029 #include <vector>
0030 #include <cstdlib>
0031 #include <utility>
0032 #include <map>
0033
0034 #include "CLHEP/Random/RandFlat.h"
0035 #include "CLHEP/Random/RandPoissonQ.h"
0036 #include "CLHEP/Random/RandGaussQ.h"
0037
0038 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0039
0040 RPCSimModelTiming::RPCSimModelTiming(const edm::ParameterSet& config) : RPCSim(config) {
0041   aveEff = config.getParameter<double>("averageEfficiency");
0042   aveCls = config.getParameter<double>("averageClusterSize");
0043   resRPC = config.getParameter<double>("timeResolution");
0044   timOff = config.getParameter<double>("timingRPCOffset");
0045   dtimCs = config.getParameter<double>("deltatimeAdjacentStrip");
0046   resEle = config.getParameter<double>("timeJitter");
0047   sspeed = config.getParameter<double>("signalPropagationSpeed");
0048   lbGate = config.getParameter<double>("linkGateWidth");
0049   rpcdigiprint = config.getParameter<bool>("printOutDigitizer");
0050
0051   rate = config.getParameter<double>("Rate");
0052   nbxing = config.getParameter<int>("Nbxing");
0053   gate = config.getParameter<double>("Gate");
0054   frate = config.getParameter<double>("Frate");
0055   do_Y = config.getParameter<bool>("do_Y_coordinate");
0056   sigmaY = config.getParameter<double>("sigmaY");
0057   eledig = config.getParameter<bool>("digitizeElectrons");
0058
0059   if (rpcdigiprint) {
0060     edm::LogInfo("RPC digitizer parameters") << "Average Efficiency        = " << aveEff;
0061     edm::LogInfo("RPC digitizer parameters") << "Average Cluster Size      = " << aveCls << " strips";
0062     edm::LogInfo("RPC digitizer parameters") << "RPC Time Resolution       = " << resRPC << " ns";
0063     edm::LogInfo("RPC digitizer parameters") << "RPC Signal formation time = " << timOff << " ns";
0064     edm::LogInfo("RPC digitizer parameters") << "RPC adjacent strip delay  = " << dtimCs << " ns";
0065     edm::LogInfo("RPC digitizer parameters") << "Electronic Jitter         = " << resEle << " ns";
0066     edm::LogInfo("RPC digitizer parameters") << "Signal propagation time   = " << sspeed << " x c";
0067     edm::LogInfo("RPC digitizer parameters") << "Link Board Gate Width     = " << lbGate << " ns";
0068   }
0069
0070   _rpcSync = new RPCSynchronizer(config);
0071 }
0072
0073 RPCSimModelTiming::~RPCSimModelTiming() { delete _rpcSync; }
0074
0075 void RPCSimModelTiming::simulate(const RPCRoll* roll,
0076                                  const edm::PSimHitContainer& rpcHits,
0077                                  CLHEP::HepRandomEngine* engine) {
0078   _rpcSync->setRPCSimSetUp(getRPCSimSetUp());
0079   theRpcDigiSimLinks.clear();
0080   theDetectorHitMap.clear();
0081   theRpcDigiSimLinks = RPCDigiSimLinks(roll->id().rawId());
0082
0083   RPCDetId rpcId = roll->id();
0084   RPCGeomServ RPCname(rpcId);
0085
0086   const Topology& topology = roll->specs()->topology();
0087
0088   for (edm::PSimHitContainer::const_iterator _hit = rpcHits.begin(); _hit != rpcHits.end(); ++_hit) {
0089     if (!eledig && _hit->particleType() == 11)
0090       continue;
0091     // Here I hould check if the RPC are up side down;
0092     const LocalPoint& entr = _hit->entryPoint();
0093
0094     int time_hit = _rpcSync->getSimHitBxAndTimingForIRPC(&(*_hit), engine);
0095     double precise_time = _rpcSync->getSmearedTime();
0096
0097     float posX = roll->strip(_hit->localPosition()) - static_cast<int>(roll->strip(_hit->localPosition()));
0098
0099     std::vector<float> veff = (getRPCSimSetUp())->getEff(rpcId.rawId());
0100
0101     // Effinciecy
0102     int centralStrip = topology.channel(entr) + 1;
0103     ;
0104     float fire = CLHEP::RandFlat::shoot(engine);
0105
0106     float smearedPositionY = CLHEP::RandGaussQ::shoot(engine, _hit->localPosition().y(), sigmaY);
0107
0108     if (fire < veff[centralStrip - 1]) {
0109       int fstrip = centralStrip;
0110       int lstrip = centralStrip;
0111
0112       // Compute the cluster size
0113       int clsize = this->getClSize(rpcId.rawId(), posX, engine);  // This is for cluster size chamber by chamber
0114       std::vector<int> cls;
0115       cls.push_back(centralStrip);
0116       if (clsize > 1) {
0117         for (int cl = 0; cl < (clsize - 1) / 2; cl++) {
0118           if (centralStrip - cl - 1 >= 1) {
0119             fstrip = centralStrip - cl - 1;
0120             cls.push_back(fstrip);
0121           }
0122           if (centralStrip + cl + 1 <= roll->nstrips()) {
0123             lstrip = centralStrip + cl + 1;
0124             cls.push_back(lstrip);
0125           }
0126         }
0127         if (clsize % 2 == 0) {
0128           // insert the last strip according to the
0129           // simhit position in the central strip
0130           int lr = LeftRightNeighbour(*roll, entr, centralStrip);
0131           if (lr == 1) {
0132             if (lstrip < roll->nstrips()) {
0133               lstrip++;
0134               cls.push_back(lstrip);
0135             }
0136           } else {
0137             if (fstrip > 1) {
0138               fstrip--;
0139               cls.push_back(fstrip);
0140             }
0141           }
0142         }
0143       }
0144
0145       //digitize all the strips in the cluster
0146       //in the previuos version some strips were dropped
0147       //leading to un-physical "shift" of the cluster
0148       for (std::vector<int>::iterator i = cls.begin(); i != cls.end(); i++) {
0149         std::pair<int, int> digi(*i, time_hit);
0150         RPCDigi adigi(*i, time_hit);
0151         adigi.hasTime(true);
0152         adigi.setTime(precise_time);
0153         if (do_Y) {
0154           adigi.hasY(true);
0155           adigi.setY(smearedPositionY);
0156           adigi.setDeltaY(sigmaY);
0157         }
0158         irpc_digis.insert(adigi);
0159         theDetectorHitMap.insert(DetectorHitMap::value_type(digi, &(*_hit)));
0160       }
0161     }
0162   }
0163 }
0164
0165 void RPCSimModelTiming::simulateNoise(const RPCRoll* roll, CLHEP::HepRandomEngine* engine) {
0166   RPCDetId rpcId = roll->id();
0167   RPCGeomServ RPCname(rpcId);
0168   std::vector<float> vnoise = (getRPCSimSetUp())->getNoise(rpcId.rawId());
0169   std::vector<float> veff = (getRPCSimSetUp())->getEff(rpcId.rawId());
0170   unsigned int nstrips = roll->nstrips();
0171   double area = 0.0;
0172   float striplength, xmin, xmax;
0173   if (rpcId.region() == 0) {
0174     const RectangularStripTopology* top_ = dynamic_cast<const RectangularStripTopology*>(&(roll->topology()));
0175     xmin = (top_->localPosition(0.)).x();
0176     xmax = (top_->localPosition((float)roll->nstrips())).x();
0177     striplength = (top_->stripLength());
0178     area = striplength * (xmax - xmin);
0179   } else {
0180     const TrapezoidalStripTopology* top_ = dynamic_cast<const TrapezoidalStripTopology*>(&(roll->topology()));
0181     xmin = (top_->localPosition(0.)).x();
0182     xmax = (top_->localPosition((float)roll->nstrips())).x();
0183     striplength = (top_->stripLength());
0184     area = striplength * (xmax - xmin);
0185   }
0186
0187   for (unsigned int j = 0; j < vnoise.size(); ++j) {
0188     if (j >= nstrips)
0189       break;
0190
0191     double ave = vnoise[j] * nbxing * gate * area * 1.0e-9 * frate / ((float)roll->nstrips());
0192
0193     CLHEP::RandPoissonQ randPoissonQ(*engine, ave);
0194     N_hits = randPoissonQ.fire();
0195     for (int i = 0; i < N_hits; i++) {
0196       double precise_time = CLHEP::RandFlat::shoot(engine, (nbxing * gate) / gate);
0197       int time_hit = (static_cast<int>(precise_time)) - nbxing / 2;
0198       RPCDigi adigi(j + 1, time_hit);
0199       adigi.hasTime(true);
0200       adigi.setTime(precise_time);
0201       if (do_Y) {
0202         double positionY = CLHEP::RandFlat::shoot(engine, striplength);
0203         positionY -= striplength / 2;
0204         adigi.hasY(true);
0205         adigi.setY(positionY);
0206         adigi.setDeltaY(sigmaY);
0207       }
0208       irpc_digis.insert(adigi);
0209     }
0210   }
0211 }
0212
0213 int RPCSimModelTiming::getClSize(uint32_t id, float posX, CLHEP::HepRandomEngine* engine) {
0214   std::vector<double> clsForDetId = getRPCSimSetUp()->getCls(id);
0215
0216   int cnt = 1;
0217   int min = 1;
0218   double func = 0.0;
0219   std::vector<double> sum_clsize;
0220
0221   sum_clsize.clear();
0222   sum_clsize = clsForDetId;
0223   int vectOffset(0);
0224
0225   double rr_cl = CLHEP::RandFlat::shoot(engine);
0226
0227   if (0.0 <= posX && posX < 0.2) {
0228     func = clsForDetId[19] * (rr_cl);
0229     vectOffset = 0;
0230   }
0231   if (0.2 <= posX && posX < 0.4) {
0232     func = clsForDetId[39] * (rr_cl);
0233     vectOffset = 20;
0234   }
0235   if (0.4 <= posX && posX < 0.6) {
0236     func = clsForDetId[59] * (rr_cl);
0237     vectOffset = 40;
0238   }
0239   if (0.6 <= posX && posX < 0.8) {
0240     func = clsForDetId[79] * (rr_cl);
0241     vectOffset = 60;
0242   }
0243   if (0.8 <= posX && posX < 1.0) {
0244     func = clsForDetId[89] * (rr_cl);
0245     vectOffset = 80;
0246   }
0247
0248   for (int i = vectOffset; i < (vectOffset + 20); i++) {
0249     cnt++;
0250     if (func > clsForDetId[i]) {
0251       min = cnt;
0252     } else if (func < clsForDetId[i]) {
0253       break;
0254     }
0255   }
0256   return min;
0257 }
0258
0259 int RPCSimModelTiming::LeftRightNeighbour(const RPCRoll& roll, const LocalPoint& hit_pos, int strip) {
0260   //if left return -1
0261   //if right return +1
0262
0263   int leftStrip = strip - 1;
0264   int rightStrip = strip + 1;
0265
0266   if (leftStrip < 0)
0267     return +1;
0268   if (rightStrip > roll.nstrips())
0269     return -1;
0270
0271   double deltawL = fabs((roll.centreOfStrip(leftStrip)).x() - hit_pos.x());
0272   double deltawR = fabs((roll.centreOfStrip(rightStrip)).x() - hit_pos.x());
0273
0274   if (deltawL >= deltawR) {
0275     return +1;
0276   } else {
0277     return -1;
0278   }
0279 }