CosmicMuonGenerator.cc

CMSSW/GeneratorInterface/CosmicMuonGenerator/src/CosmicMuonGenerator.cc

Macros

sim_cxx

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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280	`///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////` `// modified by P. Biallass 29.03.2006 to implement new cosmic generator (CMSCGEN.cc) and new normalization of flux (CMSCGENnorm.cc)` `///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////` `// 04.12.2008 sonne: replaced Min/MaxE by Min/MaxP to get cos_sf/ug scripts working again` `// 20.04.2009 sonne: Implemented mechanism to read in multi muon events and propagate each muon` `#define sim_cxx` `#include "GeneratorInterface/CosmicMuonGenerator/interface/CosmicMuonGenerator.h"` `void CosmicMuonGenerator::runCMG() {` `initialize();` `for (unsigned int iGen = 0; iGen < NumberOfEvents; ++iGen) {` `nextEvent();` `}` `terminate();` `}` `void CosmicMuonGenerator::setRandomEngine(CLHEP::HepRandomEngine* v) {` `if (delRanGen)` `delete RanGen;` `RanGen = v;` `delRanGen = false;` `Cosmics->setRandomEngine(v);` `}` `void CosmicMuonGenerator::initialize(CLHEP::HepRandomEngine* rng) {` `if (delRanGen)` `delete RanGen;` `if (!rng) {` `RanGen = new CLHEP::HepJamesRandom;` `RanGen->setSeed(RanSeed, 0); //set seed for Random Generator (seed can be controled by config-file)` `delRanGen = true;` `} else {` `RanGen = rng;` `delRanGen = false;` `}` `checkIn();` `if (NumberOfEvents > 0) {` `// set up "surface geometry" dimensions` `double RadiusTargetEff = RadiusOfTarget; //get this from cfg-file` `double Z_DistTargetEff = ZDistOfTarget; //get this from cfg-file` `//double Z_CentrTargetEff = ZCentrOfTarget; //get this from cfg-file` `if (TrackerOnly == true) {` `RadiusTargetEff = RadiusTracker;` `Z_DistTargetEff = Z_DistTracker;` `}` `Target3dRadius = sqrt(RadiusTargetEff * RadiusTargetEff + Z_DistTargetEff * Z_DistTargetEff) + MinStepSize;` `if (Debug)` `std::cout << " radius of sphere around target = " << Target3dRadius << " mm" << std::endl;` `if (MinTheta > 90. * Deg2Rad) //upgoing muons from neutrinos` `SurfaceRadius = (RadiusCMS) * (-tan(MinTheta)) + MinStepSize;` `else` `SurfaceRadius = (SurfaceOfEarth + PlugWidth + RadiusTargetEff) * tan(MaxTheta) + Target3dRadius;` `if (Debug)` `std::cout << " starting point radius at Surface + PlugWidth = " << SurfaceRadius << " mm" << std::endl;` `OneMuoEvt.PlugVx = PlugVx;` `OneMuoEvt.PlugVz = PlugVz;` `OneMuoEvt.RhoAir = RhoAir;` `OneMuoEvt.RhoWall = RhoWall;` `OneMuoEvt.RhoRock = RhoRock;` `OneMuoEvt.RhoClay = RhoClay;` `OneMuoEvt.RhoPlug = RhoPlug;` `//set energy and angle limits for CMSCGEN, give same seed as above` `if (MinTheta >= 90. * Deg2Rad) //upgoing muons from neutrinos` `Cosmics->initializeNuMu(MinP, MaxP, MinTheta, MaxTheta, MinEnu, MaxEnu, MinPhi, MaxPhi, NuProdAlt, RanGen);` `else` `Cosmics->initialize(MinP, MaxP, MinTheta, MaxTheta, RanGen, TIFOnly_constant, TIFOnly_linear);` `#if ROOT_INTERACTIVE` `// book histos` `TH1D* ene = new TH1D("ene", "generated energy", 210, 0., 1050.);` `TH1D* the = new TH1D("the", "generated theta", 90, 0., 90.);` `TH1D* phi = new TH1D("phi", "generated phi", 120, 0., 360.);` `TH3F* ver = new TH3F("ver", "Z-X-Y coordinates", 100, -25., 25., 20, -10., 10., 40, -10., 10.);` `#endif` `if (EventDisplay)` `initEvDis();` `std::cout << std::endl;` `if (MultiMuon) {` `MultiIn = nullptr;` `std::cout << "MultiMuonFileName.c_str()=" << MultiMuonFileName.c_str() << std::endl;` `MultiIn = new TFile(MultiMuonFileName.c_str());` `if (!MultiIn)` `std::cout << "MultiMuon=True: MultiMuonFileName='" << MultiMuonFileName.c_str() << "' does not exist"` `<< std::endl;` `else` `std::cout << "MultiMuonFile: " << MultiMuonFileName.c_str() << " opened!" << std::endl;` `//MultiTree = (TTree) gDirectory->Get("sim");` `MultiTree = (TTree)MultiIn->Get("sim");` `SimTree = new sim(MultiTree);` `SimTree->Init(MultiTree);` `SimTreeEntries = SimTree->fChain->GetEntriesFast();` `std::cout << "SimTreeEntries=" << SimTreeEntries << std::endl;` `if (MultiMuonFileFirstEvent <= 0)` `SimTree_jentry = 0;` `else` `SimTree_jentry = MultiMuonFileFirstEvent - 1; //1=1st evt (SimTree_jentry=0)` `NcloseMultiMuonEvents = 0;` `NskippedMultiMuonEvents = 0;` `}` `if (!MultiMuon \|\| (MultiMuon && MultiIn))` `NotInitialized = false;` `}` `}` `void CosmicMuonGenerator::nextEvent() {` `double E = 0.;` `double Theta = 0.;` `double Phi = 0.;` `double RxzV = 0.;` `double PhiV = 0.;` `if (int(Nsel) % 100 == 0)` `std::cout << " generated " << int(Nsel) << " events" << std::endl;` `// generate cosmic (E,theta,phi)` `bool notSelected = true;` `while (notSelected) {` `bool badMomentumGenerated = true;` `while (badMomentumGenerated) {` `if (MinTheta > 90. * Deg2Rad) //upgoing muons from neutrinos` `Cosmics->generateNuMu();` `else` `Cosmics->generate(); //dice one event now` `E = sqrt(Cosmics->momentum_times_charge() * Cosmics->momentum_times_charge() + MuonMass * MuonMass);` `Theta = TMath::ACos(Cosmics->cos_theta()); //angle has to be in RAD here` `Ngen += 1.; //count number of initial cosmic events (in surface area), vertices will be added later` `badMomentumGenerated = false;` `Phi = RanGen->flat() * (MaxPhi - MinPhi) + MinPhi;` `}` `Norm->events_n100cos(E, Theta); //test if this muon is in normalization range` `Ndiced += 1; //one more cosmic is diced` `// generate vertex` `double Nver = 0.;` `bool badVertexGenerated = true;` `while (badVertexGenerated) {` `RxzV = sqrt(RanGen->flat()) * SurfaceRadius;` `PhiV = RanGen->flat() * TwoPi;` `// check phi range (for a sphere with Target3dRadius around the target)` `double dPhi = Pi;` `if (RxzV > Target3dRadius)` `dPhi = asin(Target3dRadius / RxzV);` `double rotPhi = PhiV + Pi;` `if (rotPhi > TwoPi)` `rotPhi -= TwoPi;` `double disPhi = std::fabs(rotPhi - Phi);` `if (disPhi > Pi)` `disPhi = TwoPi - disPhi;` `if (disPhi < dPhi \|\| AcptAllMu)` `badVertexGenerated = false;` `Nver += 1.;` `}` `Ngen += (Nver - 1.); //add number of generated vertices to initial cosmic events` `// complete event at surface` `int id = 13; // mu-` `if (Cosmics->momentum_times_charge() > 0.)` `id = -13; // mu+` `double absMom = sqrt(E * E - MuonMass * MuonMass);` `double verMom = absMom * cos(Theta);` `double horMom = absMom * sin(Theta);` `double Px = horMom * sin(Phi); // [GeV/c]` `double Py = -verMom; // [GeV/c]` `double Pz = horMom * cos(Phi); // [GeV/c]` `double Vx = RxzV * sin(PhiV); // [mm]` `double Vy;` `if (MinTheta > 90. * Deg2Rad) //upgoing muons from neutrinos` `Vy = -RadiusCMS;` `else` `Vy = SurfaceOfEarth + PlugWidth; // [mm]` `double Vz = RxzV * cos(PhiV); // [mm]` `double T0 = (RanGen->flat() * (MaxT0 - MinT0) + MinT0) * SpeedOfLight; // [mm/c];` `Id_at = id;` `Px_at = Px;` `Py_at = Py;` `Pz_at = Pz;` `E_at = E; //M_at = MuonMass;` `Vx_at = Vx;` `Vy_at = Vy;` `Vz_at = Vz;` `T0_at = T0;` `OneMuoEvt.create(id, Px, Py, Pz, E, MuonMass, Vx, Vy, Vz, T0);` `// if angles are ok, propagate to target` `if (goodOrientation()) {` `if (MinTheta > 90. * Deg2Rad) //upgoing muons from neutrinos` `OneMuoEvt.propagate(0., RadiusOfTarget, ZDistOfTarget, ZCentrOfTarget, TrackerOnly, MTCCHalf);` `else` `OneMuoEvt.propagate(ElossScaleFactor, RadiusOfTarget, ZDistOfTarget, ZCentrOfTarget, TrackerOnly, MTCCHalf);` `}` `if ((OneMuoEvt.hitTarget() && sqrt(OneMuoEvt.e() * OneMuoEvt.e() - MuonMass * MuonMass) > MinP_CMS) \|\|` `AcptAllMu == true) {` `Nsel += 1.; //count number of generated and accepted events` `notSelected = false;` `}` `}` `EventWeight = 1.;` `//just one outgoing particle at SurFace` `Id_sf.resize(1);` `Px_sf.resize(1);` `Py_sf.resize(1);` `Pz_sf.resize(1);` `E_sf.resize(1);` `//M_sf.resize(1);` `Vx_sf.resize(1);` `Vy_sf.resize(1);` `Vz_sf.resize(1);` `T0_sf.resize(1);` `Id_sf[0] = Id_at;` `Px_sf[0] = Px_at;` `Py_sf[0] = Py_at;` `Pz_sf[0] = Pz_at;` `E_sf[0] = E_at; //M_fs[0] = MuonMass;` `Vx_sf[0] = Vx_at;` `Vy_sf[0] = Vy_at;` `Vz_sf[0] = Vz_at;` `T0_sf[0] = T0_at;` `//just one particle at UnderGround` `Id_ug.resize(1);` `Px_ug.resize(1);` `Py_ug.resize(1);` `Pz_ug.resize(1);` `E_ug.resize(1);` `//M_ug.resize(1);` `Vx_ug.resize(1);` `Vy_ug.resize(1);` `Vz_ug.resize(1);` `T0_ug.resize(1);` `Id_ug[0] = OneMuoEvt.id();` `Px_ug[0] = OneMuoEvt.px();` `Py_ug[0] = OneMuoEvt.py();` `Pz_ug[0] = OneMuoEvt.pz();` `E_ug[0] = OneMuoEvt.e();` `//M_ug[0] = OneMuoEvt.m();` `Vx_ug[0] = OneMuoEvt.vx();` `Vy_ug[0] = OneMuoEvt.vy();` `Vz_ug[0] = OneMuoEvt.vz();` `T0_ug[0] = OneMuoEvt.t0();` `// plot variables of selected events` `#if ROOT_INTERACTIVE` `ene->Fill(OneMuoEvt.e());` `the->Fill((OneMuoEvt.theta() * Rad2Deg));` `phi->Fill((OneMuoEvt.phi() * Rad2Deg));` `ver->Fill((OneMuoEvt.vz() / 1000.), (OneMuoEvt.vx() / 1000.), (OneMuoEvt.vy() / 1000.));` `#endif` `if (Debug) {` `std::cout << "new event" << std::endl;` `std::cout << " Px,Py,Pz,E,m = " << OneMuoEvt.px() << ", " << OneMuoEvt.py() << ", " << OneMuoEvt.pz() << ", "` `<< OneMuoEvt.e() << ", " << OneMuoEvt.m() << " GeV" << std::endl;` `std::cout << " Vx,Vy,Vz,t0 = " << OneMuoEvt.vx() << ", " << OneMuoEvt.vy() << ", " << OneMuoEvt.vz() << ", "` `<< OneMuoEvt.t0() << " mm" << std::endl;` `}` `if (EventDisplay)` `displayEv();` `}` `bool CosmicMuonGenerator::nextMultiEvent() {` `if (Debug)` `std::cout << "\nEntered CosmicMuonGenerator::nextMultiEvent()" << std::endl;` `bool EvtRejected = true;` `bool MuInMaxDist = false;` `double MinDist; //[mm]` `while (EvtRejected) {` `//read in event from SimTree` `//ULong64_t ientry = SimTree->LoadTree(SimTree_jentry);` `Long64_t ientry = SimTree->GetEntry(SimTree_jentry);` `std::cout << "CosmicMuonGenerator::nextMultiEvent(): SimTree_jentry="` `<< SimTree_jentry` `//<< " ientry=" << ientry` `<< " SimTreeEntries=" << SimTreeEntries << std::endl;` `if (ientry < 0)` `return false; //stop run` `if (SimTree_jentry < SimTreeEntries) {` `SimTree_jentry++;` `} else {` `std::cout << "CosmicMuonGenerator.cc::nextMultiEvent: No more events in file!" << std::endl;` `return false; //stop run` `}` `int nmuons = SimTree->shower_nParticlesWritten;` `if (nmuons < MultiMuonNmin) {` `std::cout << "CosmicMuonGenerator.cc: Warning! Less than " << MultiMuonNmin << " muons in event!" << std::endl;` `std::cout << "trying next event from file" << std::endl;` `NskippedMultiMuonEvents++;` `continue; //EvtRejected while loop: get next event from file` `}` `Px_mu.resize(nmuons);` `Py_mu.resize(nmuons);` `Pz_mu.resize(nmuons);` `P_mu.resize(nmuons);` `MinDist = 99999.e9; //[mm]` `double MuMuDist;` `MuInMaxDist = false;` `//check if at least one muon pair closer than 30m at surface` `int NmuPmin = 0;` `for (int imu = 0; imu < nmuons; ++imu) {` `Px_mu[imu] =` `-SimTree->particle__Px[imu] * sin(NorthCMSzDeltaPhi) + SimTree->particle__Py[imu] * cos(NorthCMSzDeltaPhi);` `Pz_mu[imu] =` `SimTree->particle__Px[imu] * cos(NorthCMSzDeltaPhi) + SimTree->particle__Py[imu] * sin(NorthCMSzDeltaPhi);` `Py_mu[imu] = -SimTree->particle__Pz[imu]; //Corsika down going particles defined in -z direction!` `P_mu[imu] = sqrt(Px_mu[imu] * Px_mu[imu] + Py_mu[imu] * Py_mu[imu] + Pz_mu[imu] * Pz_mu[imu]);` `if (P_mu[imu] < MinP_CMS && AcptAllMu == false)` `continue;` `else if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)` `continue;` `else` `NmuPmin++;` `for (int jmu = 0; jmu < imu; ++jmu) {` `if (P_mu[jmu] < MinP_CMS && AcptAllMu == false)` `continue;` `if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)` `continue;` `MuMuDist = sqrt((SimTree->particle__x[imu] - SimTree->particle__x[jmu]) ` `(SimTree->particle__x[imu] - SimTree->particle__x[jmu]) +` `(SimTree->particle__y[imu] - SimTree->particle__y[jmu]) ` `(SimTree->particle__y[imu] - SimTree->particle__y[jmu])) ` `10.; //CORSIKA [cm] to CMSCGEN [mm]` `if (MuMuDist < MinDist)` `MinDist = MuMuDist;` `if (MuMuDist < 2. Target3dRadius)` `MuInMaxDist = true;` `}` `}` `if (MultiMuonNmin >= 2) {` `if (MuInMaxDist) {` `NcloseMultiMuonEvents++;` `} else {` `std::cout << "CosmicMuonGenerator.cc: Warning! No muon pair closer than " << 2. * Target3dRadius / 1000.` `<< "m MinDist=" << MinDist / 1000. << "m at surface" << std::endl;` `std::cout << "Fraction of too wide opening angle multi muon events: "` `<< 1 - double(NcloseMultiMuonEvents) / SimTree_jentry << std::endl;` `std::cout << "NcloseMultiMuonEvents=" << NcloseMultiMuonEvents << std::endl;` `std::cout << "trying next event from file" << std::endl;` `NskippedMultiMuonEvents++;` `continue; //EvtRejected while loop: get next event from file` `}` `}` `if (NmuPmin < MultiMuonNmin && AcptAllMu == false) { //take single muon events consistently into account` `NskippedMultiMuonEvents++;` `continue; //EvtRejected while loop: get next event from file` `}` `if (Debug)` `if (MultiMuonNmin >= 2)` `std::cout << "start trial do loop: MuMuDist=" << MinDist / 1000. << "[m] Nmuons=" << nmuons` `<< " NcloseMultiMuonEvents=" << NcloseMultiMuonEvents` `<< " NskippedMultiMuonEvents=" << NskippedMultiMuonEvents << std::endl;` `//int primary_id = SimTree->run_ParticleID;` `Id_at = SimTree->shower_EventID;` `double M_at = 0.;` `//if (Id_at == 13) {` `Id_at = 2212; //convert from Corsika to HepPDT` `M_at = 938.272e-3; //[GeV] mass` `//}` `E_at = SimTree->shower_Energy;` `Theta_at = SimTree->shower_Theta;` `double phi_at = SimTree->shower_Phi - NorthCMSzDeltaPhi; //rotate by almost 90 degrees` `if (phi_at < -Pi)` `phi_at += TwoPi; //bring into interval (-Pi,Pi]` `else if (phi_at > Pi)` `phi_at -= TwoPi;` `double P_at = sqrt(E_at * E_at - M_at * M_at);` `//need to rotate about 90degrees around x->N axis => y<=>z,` `//then rotate new x-z-plane from x->North to x->LHC centre` `Px_at = P_at * sin(Theta_at) * sin(phi_at);` `Py_at = -P_at * cos(Theta_at);` `Pz_at = P_at * sin(Theta_at) * cos(phi_at);` `//compute maximal theta of secondary muons` `double theta_mu_max = Theta_at;` `double theta_mu_min = Theta_at;` `double phi_rel_min = 0.; //phi_mu_min - phi_at` `double phi_rel_max = 0.; //phi_mu_max - phi_at` `//std::cout << "SimTree->shower_Energy=" << SimTree->shower_Energy <<std::endl;` `Theta_mu.resize(nmuons);` `for (int imu = 0; imu < nmuons; ++imu) {` `Theta_mu[imu] = acos(-Py_mu[imu] / P_mu[imu]);` `if (Theta_mu[imu] > theta_mu_max)` `theta_mu_max = Theta_mu[imu];` `if (Theta_mu[imu] < theta_mu_min)` `theta_mu_min = Theta_mu[imu];` `double phi_mu = atan2(Px_mu[imu], Pz_mu[imu]); // in (-Pi,Pi]` `double phi_rel = phi_mu - phi_at;` `if (phi_rel < -Pi)` `phi_rel += TwoPi; //bring into interval (-Pi,Pi]` `else if (phi_rel > Pi)` `phi_rel -= TwoPi;` `if (phi_rel < phi_rel_min)` `phi_rel_min = phi_rel;` `else if (phi_rel > phi_rel_max)` `phi_rel_max = phi_rel;` `}` `double h_sf = SurfaceOfEarth + PlugWidth; //[mm]` `double R_at = h_sf * tan(Theta_at);` `double JdRxzV_dR_trans = 1.;` `double JdPhiV_dPhi_trans = 1.;` `double JdR_trans_sqrt = 1.;` `//chose random vertex Phi and Rxz weighted to speed up and smoothen` `double R_mu_max = (h_sf + Target3dRadius) * tan(theta_mu_max);` `double R_max = std::min(SurfaceRadius, R_mu_max);` `double R_mu_min = (h_sf - Target3dRadius) * tan(theta_mu_min);` `double R_min = std::max(0., R_mu_min);` `if (R_at > SurfaceRadius) {` `std::cout << "CosmicMuonGenerator.cc: Warning! R_at=" << R_at << " > SurfaceRadius=" << SurfaceRadius` `<< std::endl;` `}` `//do phase space transformation for horizontal radius R` `//determine first phase space limits` `double psR1min = R_min + 0.25 * (R_max - R_min);` `double psR1max = std::min(SurfaceRadius, R_max - 0.25 * (R_max - R_min)); //no R's beyond R_max` `double psR1 = psR1max - psR1min;` `double psR2min = R_min;` `double psR2max = R_max;` `double psR2 = psR2max - psR2min;` `double psR3min = 0.;` `double psR3max = SurfaceRadius;` `double psR3 = psR3max - psR3min;` `//double psall = psR1+psR2+psR3;` `double psRall = psR3;` `double fR1 = psR1 / psRall, fR2 = psR2 / psRall, fR3 = psR3 / psRall; //f1+f2+f3=130%` `double pR1 = 0.25, pR2 = 0.7, pR3 = 0.05;` `//do phase space transformation for azimuthal angle phi` `double psPh1 = 0.5 * (phi_rel_max - phi_rel_min);` `double psPh2 = phi_rel_max - phi_rel_min;` `double psPh3 = TwoPi;` `double psPhall = psPh3;` `double fPh1 = psPh1 / psPhall, fPh2 = psPh2 / psPhall,` `fPh3 = psPh3 / psPhall; //(f1+f2+f3=TwoPi+f1+f2)/(TwoPi+f1+f2)` `double pPh1 = 0.25, pPh2 = 0.7, pPh3 = 0.05;` `Trials = 0; //global int trials` `double trials = 0.; //local weighted trials` `Vx_mu.resize(nmuons);` `Vy_mu.resize(nmuons);` `Vz_mu.resize(nmuons);` `int NmuHitTarget = 0;` `while (NmuHitTarget < MultiMuonNmin) {` `NmuHitTarget = 0; //re-initialize every loop iteration` `double Nver = 0.;` `//chose phase space class` `double RxzV;` `double which_R_class = RanGen->flat();` `if (which_R_class < pR1) { //pR1% in psR1` `RxzV = psR1min + psR1 * RanGen->flat();` `JdRxzV_dR_trans = fR1 / pR1 * SurfaceRadius / psR1;` `} else if (which_R_class < pR1 + pR2) { //further pR2% in psR2` `RxzV = psR2min + psR2 * RanGen->flat();` `JdRxzV_dR_trans = fR2 / pR2 * SurfaceRadius / psR2;` `} else { //remaining pR3% in psR3=[0., R_max]` `RxzV = psR3min + psR3 * RanGen->flat();` `JdRxzV_dR_trans = fR3 / pR3 * SurfaceRadius / psR3;` `}` `JdR_trans_sqrt = 2. * RxzV / SurfaceRadius; //flat in sqrt(r) space` `//chose phase space class` `double PhiV;` `double which_phi_class = RanGen->flat();` `if (which_phi_class < pPh1) { //pPh1% in psPh1` `PhiV = phi_at + phi_rel_min + psPh1 * RanGen->flat();` `JdPhiV_dPhi_trans = fPh1 / pPh1 * TwoPi / psPh1;` `} else if (which_phi_class < pPh1 + pPh2) { //further pPh2% in psPh2` `PhiV = phi_at + phi_rel_min + psPh2 * RanGen->flat();` `JdPhiV_dPhi_trans = fPh2 / pPh2 * TwoPi / psPh2;` `} else { //remaining pPh3% in psPh3=[-Pi,Pi]` `PhiV = phi_at + phi_rel_min + psPh3 * RanGen->flat();` `JdPhiV_dPhi_trans = fPh3 / pPh3 * TwoPi / psPh3;` `}` `//shuffle PhiV into [-Pi,+Pi] interval` `if (PhiV < -Pi)` `PhiV += TwoPi;` `else if (PhiV > Pi)` `PhiV -= TwoPi;` `Nver++;` `trials += JdR_trans_sqrt * JdRxzV_dR_trans * JdPhiV_dPhi_trans;` `Trials++;` `if (trials > max_Trials)` `break; //while (Id_sf.size() < 2) loop` `Ngen += (Nver - 1.); //add number of generated vertices to initial cosmic events` `Vx_at = RxzV * sin(PhiV); // [mm]` `Vy_at = h_sf; // [mm] (SurfaceOfEarth + PlugWidth; Determine primary particle height below)` `//Vy_at = SimTree->shower_StartingAltitude10. + h_sf; // [mm]` `//std::cout << "SimTree->shower_StartingAltitude10=" << SimTree->shower_StartingAltitude10 <<std::endl;` `Vz_at = RxzV cos(PhiV); // [mm]` `int NmuHitTargetSphere = 0;` `for (int imu = 0; imu < nmuons; ++imu) {` `Vx_mu[imu] = Vx_at + (-SimTree->particle__x[imu] * sin(NorthCMSzDeltaPhi) +` `SimTree->particle__y[imu] * cos(NorthCMSzDeltaPhi)) ` `10; //[mm] (Corsika cm to CMSCGEN mm)` `Vy_mu[imu] = h_sf; //[mm] fixed at surface + PlugWidth` `Vz_mu[imu] = Vz_at + (SimTree->particle__x[imu] cos(NorthCMSzDeltaPhi) +` `SimTree->particle__y[imu] * sin(NorthCMSzDeltaPhi)) ` `10; //[mm] (Corsika cm to CMSCGEN mm)` `//add atmospheric height to primary particle (default SimTree->shower_StartingAltitude = 0.)` `double pt_sec = sqrt(Px_mu[imu] Px_mu[imu] + Pz_mu[imu] * Pz_mu[imu]);` `double theta_sec = atan2(std::fabs(Py_mu[imu]), pt_sec);` `double r_sec = sqrt((Vx_mu[imu] - Vx_at) * (Vx_mu[imu] - Vx_at) + (Vz_mu[imu] - Vz_at) * (Vz_mu[imu] - Vz_at));` `double h_prod = r_sec * tan(theta_sec);` `if (h_prod + h_sf > Vy_at)` `Vy_at = h_prod + h_sf;` `//only muons` `if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)` `continue;` `if (P_mu[imu] < MinP_CMS && AcptAllMu == false)` `continue;` `//check here if at least 2 muons make it to the target sphere` `double Vxz_mu = sqrt(Vx_mu[imu] * Vx_mu[imu] + Vz_mu[imu] * Vz_mu[imu]);` `theta_mu_max = atan((Vxz_mu + Target3dRadius) / (h_sf - Target3dRadius));` `theta_mu_min = atan((Vxz_mu - Target3dRadius) / (h_sf + Target3dRadius));` `if (Theta_mu[imu] > theta_mu_min && Theta_mu[imu] < theta_mu_max) {` `// check phi range (for a sphere with Target3dRadius around the target)` `double dPhi = Pi;` `if (Vxz_mu > Target3dRadius)` `dPhi = asin(Target3dRadius / Vxz_mu);` `double PhiPmu = atan2(Px_mu[imu], Pz_mu[imu]); //muon phi` `double PhiVmu = atan2(Vx_mu[imu], Vz_mu[imu]); //muon phi` `double rotPhi = PhiVmu + Pi;` `if (rotPhi > Pi)` `rotPhi -= TwoPi;` `double disPhi = std::fabs(rotPhi - PhiPmu);` `if (disPhi > Pi)` `disPhi = TwoPi - disPhi;` `if (disPhi < dPhi) {` `NmuHitTargetSphere++;` `}` `}` `} //end imu for loop` `if (NmuHitTargetSphere < MultiMuonNmin)` `continue; //while (Id_sf.size() < 2) loop` `//nmuons outgoing particle at SurFace` `Id_sf.clear();` `Px_sf.clear();` `Py_sf.clear();` `Pz_sf.clear();` `E_sf.clear();` `//M_sf_out.clear();` `Vx_sf.clear();` `Vy_sf.clear();` `Vz_sf.clear();` `T0_sf.clear();` `//nmuons particles at UnderGround` `Id_ug.clear();` `Px_ug.clear();` `Py_ug.clear();` `Pz_ug.clear();` `E_ug.clear();` `//M_ug.clear();` `Vx_ug.clear();` `Vy_ug.clear();` `Vz_ug.clear();` `T0_ug.clear();` `int Id_sf_this = 0;` `double Px_sf_this = 0., Py_sf_this = 0., Pz_sf_this = 0.;` `double E_sf_this = 0.;` `//double M_sf_this=0.;` `double Vx_sf_this = 0., Vy_sf_this = 0., Vz_sf_this = 0.;` `double T0_sf_this = 0.;` `T0_at = SimTree->shower_GH_t0 * SpeedOfLight; // [mm]` `for (int imu = 0; imu < nmuons; ++imu) {` `if (P_mu[imu] < MinP_CMS && AcptAllMu == false)` `continue;` `//for the time being only muons` `if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)` `continue;` `Id_sf_this = SimTree->particle__ParticleID[imu];` `if (Id_sf_this == 5)` `Id_sf_this = -13; //mu+` `else if (Id_sf_this == 6)` `Id_sf_this = 13; //mu-` `else if (Id_sf_this == 1)` `Id_sf_this = 22; //gamma` `else if (Id_sf_this == 2)` `Id_sf_this = -11; //e+` `else if (Id_sf_this == 3)` `Id_sf_this = 11; //e-` `else if (Id_sf_this == 7)` `Id_sf_this = 111; //pi0` `else if (Id_sf_this == 8)` `Id_sf_this = 211; //pi+` `else if (Id_sf_this == 9)` `Id_sf_this = -211; //pi-` `else if (Id_sf_this == 10)` `Id_sf_this = 130; //KL0` `else if (Id_sf_this == 11)` `Id_sf_this = 321; //K+` `else if (Id_sf_this == 12)` `Id_sf_this = -321; //K-` `else if (Id_sf_this == 13)` `Id_sf_this = 2112; //n` `else if (Id_sf_this == 14)` `Id_sf_this = 2212; //p` `else if (Id_sf_this == 15)` `Id_sf_this = -2212; //pbar` `else if (Id_sf_this == 16)` `Id_sf_this = 310; //Ks0` `else if (Id_sf_this == 17)` `Id_sf_this = 221; //eta` `else if (Id_sf_this == 18)` `Id_sf_this = 3122; //Lambda` `else {` `std::cout << "CosmicMuonGenerator.cc: Warning! Muon Id=" << Id_sf_this << " from file read in" << std::endl;` `Id_sf_this = 99999; //trouble` `}` `T0_sf_this = SimTree->particle__Time[imu] * SpeedOfLight; //in [mm]` `Px_sf_this = Px_mu[imu];` `Py_sf_this = Py_mu[imu]; //Corsika down going particles defined in -z direction!` `Pz_sf_this = Pz_mu[imu];` `E_sf_this = sqrt(P_mu[imu] * P_mu[imu] + MuonMass * MuonMass);` `Vx_sf_this = Vx_mu[imu];` `Vy_sf_this = Vy_mu[imu]; //[mm] fixed at surface + PlugWidth` `Vz_sf_this = Vz_mu[imu];` `OneMuoEvt.create(Id_sf_this,` `Px_sf_this,` `Py_sf_this,` `Pz_sf_this,` `E_sf_this,` `MuonMass,` `Vx_sf_this,` `Vy_sf_this,` `Vz_sf_this,` `T0_sf_this);` `// if angles are ok, propagate to target` `if (goodOrientation()) {` `OneMuoEvt.propagate(ElossScaleFactor, RadiusOfTarget, ZDistOfTarget, ZCentrOfTarget, TrackerOnly, MTCCHalf);` `}` `if ((OneMuoEvt.hitTarget() && sqrt(OneMuoEvt.e() * OneMuoEvt.e() - MuonMass * MuonMass) > MinP_CMS) \|\|` `AcptAllMu == true) {` `Id_sf.push_back(Id_sf_this);` `Px_sf.push_back(Px_sf_this);` `Py_sf.push_back(Py_sf_this);` `Pz_sf.push_back(Pz_sf_this);` `E_sf.push_back(E_sf_this);` `//M_sf.push_back(M_sf_this);` `Vx_sf.push_back(Vx_sf_this);` `Vy_sf.push_back(Vy_sf_this);` `Vz_sf.push_back(Vz_sf_this);` `T0_sf.push_back(T0_sf_this);` `//T0_sf.push_back(0.); //synchronised arrival for 100% efficient full simulation tests` `Id_ug.push_back(OneMuoEvt.id());` `Px_ug.push_back(OneMuoEvt.px());` `Py_ug.push_back(OneMuoEvt.py());` `Pz_ug.push_back(OneMuoEvt.pz());` `E_ug.push_back(OneMuoEvt.e());` `//M_sf.push_back(OneMuoEvt.m());` `Vx_ug.push_back(OneMuoEvt.vx());` `Vy_ug.push_back(OneMuoEvt.vy());` `Vz_ug.push_back(OneMuoEvt.vz());` `T0_ug.push_back(OneMuoEvt.t0());` `NmuHitTarget++;` `}` `}` `} // while (Id_sf.size() < 2); //end of do loop` `if (trials > max_Trials) {` `std::cout << "CosmicMuonGenerator.cc: Warning! trials reach max_trials=" << max_Trials` `<< " without accepting event!" << std::endl;` `if (Debug) {` `std::cout << " N(mu)=" << Id_ug.size();` `if (!Id_ug.empty())` `std::cout << " E[0]=" << E_ug[0] << " theta="` `<< acos(-Py_ug[0] / sqrt(Px_ug[0] * Px_ug[0] + Py_ug[0] * Py_ug[0] + Pz_ug[0] * Pz_ug[0]))` `<< " R_xz=" << sqrt(Vx_sf[0] * Vx_sf[0] + Vy_sf[0] * Vy_sf[0]);` `std::cout << " Theta_at=" << Theta_at << std::endl;` `}` `std::cout << "Unweighted int num of Trials = " << Trials << std::endl;` `std::cout << "trying next event (" << SimTree_jentry << ") from file" << std::endl;` `NskippedMultiMuonEvents++;` `continue; //EvtRejected while loop: get next event from file` `} else {` `if (NmuHitTarget < MultiMuonNmin) {` `std::cout << "CosmicMuonGenerator.cc: Warning! less than " << MultiMuonNmin << " muons hit target: N(mu=)"` `<< NmuHitTarget << std::endl;` `std::cout << "trying next event (" << SimTree_jentry << ") from file" << std::endl;` `NskippedMultiMuonEvents++;` `continue; //EvtRejected while loop: get next event from file` `} else { //if (MuInMaxDist) {` `//re-adjust T0's of surviving muons shifted to trigger time box` `//(possible T0 increase due to propagation (loss of energy/speed + travelled distance))` `double T0_ug_min, T0_ug_max;` `T0_ug_min = T0_ug_max = T0_ug[0];` `double Tbox = (MaxT0 - MinT0) * SpeedOfLight; // [mm]` `double minDeltaT0 = 2 * Tbox;` `for (unsigned int imu = 0; imu < Id_ug.size(); ++imu) {` `double T0_this = T0_ug[imu];` `if (T0_this < T0_ug_min)` `T0_ug_min = T0_this;` `if (T0_this > T0_ug_max)` `T0_ug_max = T0_this;` `if (Debug)` `std::cout << "imu=" << imu << " T0_this=" << T0_this` `<< " P=" << sqrt(pow(Px_ug[imu], 2) + pow(Py_ug[imu], 2) + pow(Pz_ug[imu], 2)) << std::endl;` `for (unsigned int jmu = 0; jmu < imu; ++jmu) {` `if (std::fabs(T0_ug[imu] - T0_ug[jmu]) < minDeltaT0)` `minDeltaT0 = std::fabs(T0_ug[imu] - T0_ug[jmu]);` `}` `}` `if (int(Id_ug.size()) >= MultiMuonNmin && MultiMuonNmin >= 2 && minDeltaT0 > Tbox)` `continue; //EvtRejected while loop: get next event from file` `double T0_min = T0_ug_min + MinT0 * SpeedOfLight; //-12.5ns * c [mm]` `double T0_max = T0_ug_max + MaxT0 * SpeedOfLight; //+12.5ns * c [mm]` `//ckeck if >= NmuMin in time box, else throw new random number + augment evt weight` `int TboxTrials = 0;` `int NmuInTbox;` `double T0_offset, T0diff;` `for (int tboxtrial = 0; tboxtrial < 1000; ++tboxtrial) { //max 1000 trials` `T0_offset = RanGen->flat() * (T0_max - T0_min); // [mm]` `TboxTrials++;` `T0diff = T0_offset - T0_max; // [mm]` `NmuInTbox = 0;` `for (unsigned int imu = 0; imu < Id_ug.size(); ++imu) {` `if (T0_ug[imu] + T0diff > MinT0 * SpeedOfLight && T0_ug[imu] + T0diff < MaxT0 * SpeedOfLight)` `NmuInTbox++;` `}` `if (NmuInTbox >= MultiMuonNmin)` `break;` `}` `if (NmuInTbox < MultiMuonNmin)` `continue; //EvtRejected while loop: get next event from file` `if (Debug)` `std::cout << "initial T0_at=" << T0_at << " T0_min=" << T0_min << " T0_max=" << T0_max` `<< " T0_offset=" << T0_offset;` `T0_at += T0diff; //[mm]` `if (Debug)` `std::cout << " T0diff=" << T0diff << std::endl;` `for (unsigned int imu = 0; imu < Id_ug.size(); ++imu) { //adjust @ surface + underground` `if (Debug)` `std::cout << "before: T0_sf[" << imu << "]=" << T0_sf[imu] << " T0_ug=" << T0_ug[imu];` `T0_sf[imu] += T0diff;` `T0_ug[imu] += T0diff;` `if (Debug)` `std::cout << " after: T0_sf[" << imu << "]=" << T0_sf[imu] << " T0_ug=" << T0_ug[imu] << std::endl;` `}` `if (Debug)` `std::cout << "T0diff=" << T0diff << " T0_at=" << T0_at << std::endl;` `Nsel += 1;` `EventWeight = JdR_trans_sqrt * JdRxzV_dR_trans * JdPhiV_dPhi_trans / (trials * TboxTrials);` `EvtRejected = false;` `if (Debug)` `std::cout << "CosmicMuonGenerator.cc: Theta_at=" << Theta_at << " phi_at=" << phi_at << " Px_at=" << Px_at` `<< " Py_at=" << Py_at << " Pz_at=" << Pz_at << " T0_at=" << T0_at << " Vx_at=" << Vx_at` `<< " Vy_at=" << Vy_at << " Vz_at=" << Vz_at << " EventWeight=" << EventWeight` `<< " Nmuons=" << Id_sf.size() << std::endl;` `}` `}` `} //while loop EvtRejected` `return true; //write event to HepMC;` `}` `void CosmicMuonGenerator::terminate() {` `if (NumberOfEvents > 0) {` `std::cout << std::endl;` `std::cout << "*******************************************************" << std::endl;` `std::cout << "*****************************************************" << std::endl;` `std::cout << "* *" << std::endl;` `std::cout << "* C O S M I C M U O N S T A T I S T I C S *" << std::endl;` `std::cout << "* *" << std::endl;` `std::cout << "*****************************************************" << std::endl;` `std::cout << "******************************************************" << std::endl;` `std::cout << std::endl;` `std::cout << " number of initial cosmic events: " << int(Ngen) << std::endl;` `std::cout << " number of actually diced events: " << int(Ndiced) << std::endl;` `std::cout << " number of generated and accepted events: " << int(Nsel) << std::endl;` `double selEff = Nsel / Ngen; // selection efficiency` `std::cout << " event selection efficiency: " << selEff 100. << "%" << std::endl;` `int n100cos =` `Norm->events_n100cos(0., 0.); //get final amount of cosmics in defined range for normalisation of flux` `std::cout << " events with ~100 GeV and 1 - cos(theta) < 1/2pi: " << n100cos << std::endl;` `std::cout << std::endl;` `std::cout << " momentum range: " << MinP << " ... " << MaxP << " GeV" << std::endl;` `std::cout << " theta range: " << MinTheta * Rad2Deg << " ... " << MaxTheta * Rad2Deg << " deg"` `<< std::endl;` `std::cout << " phi range: " << MinPhi * Rad2Deg << " ... " << MaxPhi * Rad2Deg << " deg" << std::endl;` `std::cout << " time range: " << MinT0 << " ... " << MaxT0 << " ns" << std::endl;` `std::cout << " energy loss: " << ElossScaleFactor * 100. << "%" << std::endl;` `std::cout << std::endl;` `double area = 1.e-6 * Pi * SurfaceRadius * SurfaceRadius; // area on surface [m^2]` `if (MinTheta > 90. * Deg2Rad) //upgoing muons from neutrinos)` `std::cout << " area of initial cosmics at CMS detector bottom surface: " << area << " m^2" << std::endl;` `else` `std::cout << " area of initial cosmics on Surface + PlugWidth: " << area << " m^2" << std::endl;` `std::cout << " depth of CMS detector (from Surface): " << SurfaceOfEarth / 1000 << " m" << std::endl;` `//at least 100 evts., and` `//downgoing inside theta parametersisation range` `//or upgoing neutrino muons` `if ((n100cos > 0 && MaxTheta < 84.26 * Deg2Rad) \|\| MinTheta > 90. * Deg2Rad) {` `// rate: corrected for area and selection-Eff. and normalized to known flux, integration over solid angle (dOmega) is implicit` `// flux is normalised with respect to known flux of vertical 100GeV muons in area at suface level` `// rate seen by detector is lower than rate at surface area, so has to be corrected for selection-Eff.` `// normalisation factor has unit [1/s/m^2]` `// rate = N/time --> normalization factor gives 1/runtime/area` `// normalization with respect to number of actually diced events (Ndiced)` `if (MinTheta > 90. * Deg2Rad) { //upgoing muons from neutrinos)` `double Omega = (cos(MinTheta) - cos(MaxTheta)) * (MaxPhi - MinPhi);` `//EventRate = (Ndiced * 3.e-13) * Omega * area1.e4 selEff;//area in cm, flux=3.e-13cm^-2s^-1sr^-1` `EventRate = (Ndiced * 3.e-13) * Omega * 4. * RadiusOfTarget * ZDistOfTarget * 1.e-2 ` `selEff; //area in cm, flux=3.e-13cm^-2s^-1sr^-1` `rateErr_stat = EventRate / sqrt((double)Ndiced); // stat. rate error` `rateErr_syst = EventRate / 3.e-13 1.0e-13; // syst. rate error, from error of known flux` `} else {` `EventRate = (Ndiced * Norm->norm(n100cos)) * area * selEff;` `rateErr_stat = EventRate / sqrt((double)n100cos); // stat. rate error` `rateErr_syst = EventRate / 2.63e-3 * 0.06e-3; // syst. rate error, from error of known flux` `}` `// normalisation in region 1.-cos(theta) < 1./(2.Pi), if MaxTheta even lower correct for this` `if (MaxTheta < 0.572) {` `double spacean = 2. Pi * (1. - cos(MaxTheta));` `EventRate = (Ndiced * Norm->norm(n100cos)) * area * selEff * spacean;` `rateErr_stat = EventRate / sqrt((double)n100cos); // rate error` `rateErr_syst = EventRate / 2.63e-3 * 0.06e-3; // syst. rate error, from error of known flux` `}` `} else {` `EventRate = Nsel; //no info as no muons at 100 GeV` `rateErr_stat = Nsel;` `rateErr_syst = Nsel;` `std::cout << std::endl;` `if (MinP > 100.)` `std::cout << " !!! MinP > 100 GeV. Cannot apply normalisation!" << std::endl;` `else if (MaxTheta > 84.26 * Deg2Rad)` `std::cout << " !!! Note: generated cosmics exceed parameterisation. No flux calculated!" << std::endl;` `else` `std::cout << " !!! Not enough statistics to apply normalisation (rate=1 +- 1) !!!" << std::endl;` `}` `std::cout << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" << std::endl;` `std::cout << " rate is " << EventRate << " +-" << rateErr_stat << " (stat) "` `<< "+-" << rateErr_syst << " (syst) "` `<< " muons per second" << std::endl;` `if (EventRate != 0)` `std::cout << " number of events corresponds to " << Nsel / EventRate << " s"` `<< std::endl; //runtime at CMS = Nsel/rate` `std::cout << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" << std::endl;` `std::cout << std::endl;` `std::cout << "*******************************************************" << std::endl;` `std::cout << "******************************************************" << std::endl;` `}` `}` `void CosmicMuonGenerator::checkIn() {` `if (MinP < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: min.energy is out of range (0 GeV ... inf]" << std::endl << std::endl;` `}` `if (MaxP < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.energy is out of range (0 GeV ... inf]" << std::endl << std::endl;` `}` `if (MaxP <= MinP) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.energy is not greater than min.energy" << std::endl << std::endl;` `}` `if (MinTheta < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: min.theta is out of range [0 deg ... 90 deg)" << std::endl << std::endl;` `}` `if (MaxTheta < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.theta is out of range [0 deg ... 90 deg)" << std::endl << std::endl;` `}` `if (MaxTheta <= MinTheta) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.theta is not greater than min.theta" << std::endl << std::endl;` `}` `if (MinPhi < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: min.phi is out of range [0 deg ... 360 deg]" << std::endl << std::endl;` `}` `if (MaxPhi < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.phi is out of range [0 deg ... 360 deg]" << std::endl << std::endl;` `}` `if (MaxPhi <= MinPhi) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.phi is not greater than min.phi" << std::endl << std::endl;` `}` `if (MaxT0 <= MinT0) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.t0 is not greater than min.t0" << std::endl << std::endl;` `}` `if (ElossScaleFactor < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: E-loss scale factor is out of range [0 ... inf)" << std::endl << std::endl;` `}` `if (MinEnu < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: min.Enu is out of range [0 GeV ... inf]" << std::endl << std::endl;` `}` `if (MaxEnu < 0.) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.Enu is out of range [0 GeV ... inf]" << std::endl << std::endl;` `}` `if (MaxEnu <= MinEnu) {` `NumberOfEvents = 0;` `std::cout << " CMG-ERR: max.Enu is not greater than min.Enu" << std::endl << std::endl;` `}` `}` `bool CosmicMuonGenerator::goodOrientation() {` `// check angular range (for a sphere with Target3dRadius around the target)` `bool goodAngles = false;` `bool phiaccepted = false;` `bool thetaaccepted = false;` `double RxzV = sqrt(OneMuoEvt.vx() OneMuoEvt.vx() + OneMuoEvt.vz() * OneMuoEvt.vz());` `double rVY;` `if (MinTheta > 90. * Deg2Rad) //upgoing muons from neutrinos` `rVY = -sqrt(RxzV * RxzV + RadiusCMS * RadiusCMS);` `else` `rVY = sqrt(RxzV * RxzV + (SurfaceOfEarth + PlugWidth) * (SurfaceOfEarth + PlugWidth));` `double Phi = OneMuoEvt.phi();` `double PhiV = atan2(OneMuoEvt.vx(), OneMuoEvt.vz()) + Pi;` `if (PhiV > TwoPi)` `PhiV -= TwoPi;` `double disPhi = std::fabs(PhiV - Phi);` `if (disPhi > Pi)` `disPhi = TwoPi - disPhi;` `double dPhi = Pi;` `if (RxzV > Target3dRadius)` `dPhi = asin(Target3dRadius / RxzV);` `if (disPhi < dPhi)` `phiaccepted = true;` `double Theta = OneMuoEvt.theta();` `double ThetaV = asin(RxzV / rVY);` `double dTheta = Pi;` `if (std::fabs(rVY) > Target3dRadius)` `dTheta = asin(Target3dRadius / std::fabs(rVY));` `//std::cout << " dPhi = " << dPhi << " (" << Phi << " <p\|V> " << PhiV << ")" << std::endl;` `//std::cout << " dTheta = " << dTheta << " (" << Theta << " <p\|V> " << ThetaV << ")" << std::endl;` `if (!phiaccepted && RxzV < Target3dRadius)` `//if (RxzV < Target3dRadius)` `std::cout << "Rejected phi=" << Phi << " PhiV=" << PhiV << " dPhi=" << dPhi << " disPhi=" << disPhi` `<< " RxzV=" << RxzV << " Target3dRadius=" << Target3dRadius << " Theta=" << Theta << std::endl;` `if (std::fabs(Theta - ThetaV) < dTheta)` `thetaaccepted = true;` `if (phiaccepted && thetaaccepted)` `goodAngles = true;` `return goodAngles;` `}` `void CosmicMuonGenerator::initEvDis() {` `#if ROOT_INTERACTIVE` `float rCMS = RadiusCMS / 1000.;` `float zCMS = Z_DistCMS / 1000.;` `if (TrackerOnly == true) {` `rCMS = RadiusTracker / 1000.;` `zCMS = Z_DistTracker / 1000.;` `}` `TH2F* disXY = new TH2F("disXY", "X-Y view", 160, -rCMS, rCMS, 160, -rCMS, rCMS);` `TH2F* disZY = new TH2F("disZY", "Z-Y view", 150, -zCMS, zCMS, 160, -rCMS, rCMS);` `gStyle->SetPalette(1, 0);` `gStyle->SetMarkerColor(1);` `gStyle->SetMarkerSize(1.5);` `TCanvas* disC = new TCanvas("disC", "Cosmic Muon Event Display", 0, 0, 800, 410);` `disC->Divide(2, 1);` `disC->cd(1);` `gPad->SetTicks(1, 1);` `disXY->SetMinimum(log10(MinP));` `disXY->SetMaximum(log10(MaxP));` `disXY->GetXaxis()->SetLabelSize(0.05);` `disXY->GetXaxis()->SetTitleSize(0.05);` `disXY->GetXaxis()->SetTitleOffset(1.0);` `disXY->GetXaxis()->SetTitle("X [m]");` `disXY->GetYaxis()->SetLabelSize(0.05);` `disXY->GetYaxis()->SetTitleSize(0.05);` `disXY->GetYaxis()->SetTitleOffset(0.8);` `disXY->GetYaxis()->SetTitle("Y [m]");` `disC->cd(2);` `gPad->SetGrid(1, 1);` `gPad->SetTicks(1, 1);` `disZY->SetMinimum(log10(MinP));` `disZY->SetMaximum(log10(MaxP));` `disZY->GetXaxis()->SetLabelSize(0.05);` `disZY->GetXaxis()->SetTitleSize(0.05);` `disZY->GetXaxis()->SetTitleOffset(1.0);` `disZY->GetXaxis()->SetTitle("Z [m]");` `disZY->GetYaxis()->SetLabelSize(0.05);` `disZY->GetYaxis()->SetTitleSize(0.05);` `disZY->GetYaxis()->SetTitleOffset(0.8);` `disZY->GetYaxis()->SetTitle("Y [m]");` `#endif` `}` `void CosmicMuonGenerator::displayEv() {` `#if ROOT_INTERACTIVE` `double RadiusDet = RadiusCMS;` `double Z_DistDet = Z_DistCMS;` `if (TrackerOnly == true) {` `RadiusDet = RadiusTracker;` `Z_DistDet = Z_DistTracker;` `}` `disXY->Reset();` `disZY->Reset();` `TMarker* InteractionPoint = new TMarker(0., 0., 2);` `TArc* r8m = new TArc(0., 0., (RadiusDet / 1000.));` `TLatex* logEaxis = new TLatex();` `logEaxis->SetTextSize(0.05);` `float energy = float(OneMuoEvt.e());` `float verX = float(OneMuoEvt.vx() / 1000.); // [m]` `float verY = float(OneMuoEvt.vy() / 1000.); // [m]` `float verZ = float(OneMuoEvt.vz() / 1000.); // [m]` `float dirX = float(OneMuoEvt.px()) / std::fabs(OneMuoEvt.py());` `float dirY = float(OneMuoEvt.py()) / std::fabs(OneMuoEvt.py());` `float dirZ = float(OneMuoEvt.pz()) / std::fabs(OneMuoEvt.py());` `float yStep = disXY->GetYaxis()->GetBinWidth(1);` `int NbinY = disXY->GetYaxis()->GetNbins();` `for (int iy = 0; iy < NbinY; ++iy) {` `verX += dirX * yStep;` `verY += dirY * yStep;` `verZ += dirZ * yStep;` `float rXY = sqrt(verX * verX + verY * verY) * 1000.; // [mm]` `float absZ = std::fabs(verZ) * 1000.; // [mm]` `if (rXY < RadiusDet && absZ < Z_DistDet) {` `disXY->Fill(verX, verY, log10(energy));` `disZY->Fill(verZ, verY, log10(energy));` `disC->cd(1);` `disXY->Draw("COLZ");` `InteractionPoint->Draw("SAME");` `r8m->Draw("SAME");` `logEaxis->DrawLatex((0.65 * RadiusDet / 1000.), (1.08 * RadiusDet / 1000.), "log_{10}E(#mu^{#pm})");` `disC->cd(2);` `disZY->Draw("COL");` `InteractionPoint->Draw("SAME");` `gPad->Update();` `}` `}` `#endif` `}` `void CosmicMuonGenerator::setNumberOfEvents(unsigned int N) {` `if (NotInitialized)` `NumberOfEvents = N;` `}` `void CosmicMuonGenerator::setRanSeed(int N) {` `if (NotInitialized)` `RanSeed = N;` `}` `void CosmicMuonGenerator::setMinP(double P) {` `if (NotInitialized)` `MinP = P;` `}` `void CosmicMuonGenerator::setMinP_CMS(double P) {` `if (NotInitialized)` `MinP_CMS = P;` `}` `void CosmicMuonGenerator::setMaxP(double P) {` `if (NotInitialized)` `MaxP = P;` `}` `void CosmicMuonGenerator::setMinTheta(double Theta) {` `if (NotInitialized)` `MinTheta = Theta * Deg2Rad;` `}` `void CosmicMuonGenerator::setMaxTheta(double Theta) {` `if (NotInitialized)` `MaxTheta = Theta * Deg2Rad;` `}` `void CosmicMuonGenerator::setMinPhi(double Phi) {` `if (NotInitialized)` `MinPhi = Phi * Deg2Rad;` `}` `void CosmicMuonGenerator::setMaxPhi(double Phi) {` `if (NotInitialized)` `MaxPhi = Phi * Deg2Rad;` `}` `void CosmicMuonGenerator::setMinT0(double T0) {` `if (NotInitialized)` `MinT0 = T0;` `}` `void CosmicMuonGenerator::setMaxT0(double T0) {` `if (NotInitialized)` `MaxT0 = T0;` `}` `void CosmicMuonGenerator::setElossScaleFactor(double ElossScaleFact) {` `if (NotInitialized)` `ElossScaleFactor = ElossScaleFact;` `}` `void CosmicMuonGenerator::setRadiusOfTarget(double R) {` `if (NotInitialized)` `RadiusOfTarget = R;` `}` `void CosmicMuonGenerator::setZDistOfTarget(double Z) {` `if (NotInitialized)` `ZDistOfTarget = Z;` `}` `void CosmicMuonGenerator::setZCentrOfTarget(double Z) {` `if (NotInitialized)` `ZCentrOfTarget = Z;` `}` `void CosmicMuonGenerator::setTrackerOnly(bool Tracker) {` `if (NotInitialized)` `TrackerOnly = Tracker;` `}` `void CosmicMuonGenerator::setMultiMuon(bool MultiMu) {` `if (NotInitialized)` `MultiMuon = MultiMu;` `}` `void CosmicMuonGenerator::setMultiMuonFileName(std::string MultiMuFile) {` `if (NotInitialized)` `MultiMuonFileName = MultiMuFile;` `}` `void CosmicMuonGenerator::setMultiMuonFileFirstEvent(int MultiMuFile1stEvt) {` `if (NotInitialized)` `MultiMuonFileFirstEvent = MultiMuFile1stEvt;` `}` `void CosmicMuonGenerator::setMultiMuonNmin(int MultiMuNmin) {` `if (NotInitialized)` `MultiMuonNmin = MultiMuNmin;` `}` `void CosmicMuonGenerator::setTIFOnly_constant(bool TIF) {` `if (NotInitialized)` `TIFOnly_constant = TIF;` `}` `void CosmicMuonGenerator::setTIFOnly_linear(bool TIF) {` `if (NotInitialized)` `TIFOnly_linear = TIF;` `}` `void CosmicMuonGenerator::setMTCCHalf(bool MTCC) {` `if (NotInitialized)` `MTCCHalf = MTCC;` `}` `void CosmicMuonGenerator::setPlugVx(double PlugVtx) {` `if (NotInitialized)` `PlugVx = PlugVtx;` `}` `void CosmicMuonGenerator::setPlugVz(double PlugVtz) {` `if (NotInitialized)` `PlugVz = PlugVtz;` `}` `void CosmicMuonGenerator::setRhoAir(double VarRhoAir) {` `if (NotInitialized)` `RhoAir = VarRhoAir;` `}` `void CosmicMuonGenerator::setRhoWall(double VarRhoWall) {` `if (NotInitialized)` `RhoWall = VarRhoWall;` `}` `void CosmicMuonGenerator::setRhoRock(double VarRhoRock) {` `if (NotInitialized)` `RhoRock = VarRhoRock;` `}` `void CosmicMuonGenerator::setRhoClay(double VarRhoClay) {` `if (NotInitialized)` `RhoClay = VarRhoClay;` `}` `void CosmicMuonGenerator::setRhoPlug(double VarRhoPlug) {` `if (NotInitialized)` `RhoPlug = VarRhoPlug;` `}` `void CosmicMuonGenerator::setClayWidth(double ClayLayerWidth) {` `if (NotInitialized)` `ClayWidth = ClayLayerWidth;` `}` `void CosmicMuonGenerator::setMinEnu(double MinEn) {` `if (NotInitialized)` `MinEnu = MinEn;` `}` `void CosmicMuonGenerator::setMaxEnu(double MaxEn) {` `if (NotInitialized)` `MaxEnu = MaxEn;` `}` `void CosmicMuonGenerator::setNuProdAlt(double NuPrdAlt) {` `if (NotInitialized)` `NuProdAlt = NuPrdAlt;` `}` `double CosmicMuonGenerator::getRate() { return EventRate; }` `void CosmicMuonGenerator::setAcptAllMu(bool AllMu) {` `if (NotInitialized)` `AcptAllMu = AllMu;` `}`

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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// modified by P. Biallass 29.03.2006 to implement new cosmic generator (CMSCGEN.cc) and new normalization of flux (CMSCGENnorm.cc)
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 04.12.2008 sonne: replaced Min/MaxE by Min/MaxP to get cos_sf/ug scripts working again
// 20.04.2009 sonne: Implemented mechanism to read in multi muon events and propagate each muon
#define sim_cxx

#include "GeneratorInterface/CosmicMuonGenerator/interface/CosmicMuonGenerator.h"

void CosmicMuonGenerator::runCMG() {
  initialize();
  for (unsigned int iGen = 0; iGen < NumberOfEvents; ++iGen) {
    nextEvent();
  }
  terminate();
}

void CosmicMuonGenerator::setRandomEngine(CLHEP::HepRandomEngine* v) {
  if (delRanGen)
    delete RanGen;
  RanGen = v;
  delRanGen = false;
  Cosmics->setRandomEngine(v);
}

void CosmicMuonGenerator::initialize(CLHEP::HepRandomEngine* rng) {
  if (delRanGen)
    delete RanGen;
  if (!rng) {
    RanGen = new CLHEP::HepJamesRandom;
    RanGen->setSeed(RanSeed, 0);  //set seed for Random Generator (seed can be controled by config-file)
    delRanGen = true;
  } else {
    RanGen = rng;
    delRanGen = false;
  }
  checkIn();
  if (NumberOfEvents > 0) {
    // set up "surface geometry" dimensions
    double RadiusTargetEff = RadiusOfTarget;  //get this from cfg-file
    double Z_DistTargetEff = ZDistOfTarget;   //get this from cfg-file
    //double Z_CentrTargetEff = ZCentrOfTarget;  //get this from cfg-file
    if (TrackerOnly == true) {
      RadiusTargetEff = RadiusTracker;
      Z_DistTargetEff = Z_DistTracker;
    }
    Target3dRadius = sqrt(RadiusTargetEff * RadiusTargetEff + Z_DistTargetEff * Z_DistTargetEff) + MinStepSize;
    if (Debug)
      std::cout << "  radius of sphere  around  target = " << Target3dRadius << " mm" << std::endl;

    if (MinTheta > 90. * Deg2Rad)  //upgoing muons from neutrinos
      SurfaceRadius = (RadiusCMS) * (-tan(MinTheta)) + MinStepSize;
    else
      SurfaceRadius = (SurfaceOfEarth + PlugWidth + RadiusTargetEff) * tan(MaxTheta) + Target3dRadius;
    if (Debug)
      std::cout << "  starting point radius at Surface + PlugWidth = " << SurfaceRadius << " mm" << std::endl;

    OneMuoEvt.PlugVx = PlugVx;
    OneMuoEvt.PlugVz = PlugVz;
    OneMuoEvt.RhoAir = RhoAir;
    OneMuoEvt.RhoWall = RhoWall;
    OneMuoEvt.RhoRock = RhoRock;
    OneMuoEvt.RhoClay = RhoClay;
    OneMuoEvt.RhoPlug = RhoPlug;
    //set energy and angle limits for CMSCGEN, give same seed as above
    if (MinTheta >= 90. * Deg2Rad)  //upgoing muons from neutrinos
      Cosmics->initializeNuMu(MinP, MaxP, MinTheta, MaxTheta, MinEnu, MaxEnu, MinPhi, MaxPhi, NuProdAlt, RanGen);
    else
      Cosmics->initialize(MinP, MaxP, MinTheta, MaxTheta, RanGen, TIFOnly_constant, TIFOnly_linear);

#if ROOT_INTERACTIVE
    // book histos
    TH1D* ene = new TH1D("ene", "generated energy", 210, 0., 1050.);
    TH1D* the = new TH1D("the", "generated theta", 90, 0., 90.);
    TH1D* phi = new TH1D("phi", "generated phi", 120, 0., 360.);
    TH3F* ver = new TH3F("ver", "Z-X-Y coordinates", 100, -25., 25., 20, -10., 10., 40, -10., 10.);
#endif
    if (EventDisplay)
      initEvDis();
    std::cout << std::endl;

    if (MultiMuon) {
      MultiIn = nullptr;

      std::cout << "MultiMuonFileName.c_str()=" << MultiMuonFileName.c_str() << std::endl;
      MultiIn = new TFile(MultiMuonFileName.c_str());

      if (!MultiIn)
        std::cout << "MultiMuon=True: MultiMuonFileName='" << MultiMuonFileName.c_str() << "' does not exist"
                  << std::endl;
      else
        std::cout << "MultiMuonFile: " << MultiMuonFileName.c_str() << " opened!" << std::endl;
      //MultiTree = (TTree*) gDirectory->Get("sim");
      MultiTree = (TTree*)MultiIn->Get("sim");
      SimTree = new sim(MultiTree);
      SimTree->Init(MultiTree);
      SimTreeEntries = SimTree->fChain->GetEntriesFast();
      std::cout << "SimTreeEntries=" << SimTreeEntries << std::endl;

      if (MultiMuonFileFirstEvent <= 0)
        SimTree_jentry = 0;
      else
        SimTree_jentry = MultiMuonFileFirstEvent - 1;  //1=1st evt (SimTree_jentry=0)

      NcloseMultiMuonEvents = 0;
      NskippedMultiMuonEvents = 0;
    }

    if (!MultiMuon || (MultiMuon && MultiIn))
      NotInitialized = false;
  }
}

void CosmicMuonGenerator::nextEvent() {
  double E = 0.;
  double Theta = 0.;
  double Phi = 0.;
  double RxzV = 0.;
  double PhiV = 0.;
  if (int(Nsel) % 100 == 0)
    std::cout << "    generated " << int(Nsel) << " events" << std::endl;
  // generate cosmic (E,theta,phi)
  bool notSelected = true;
  while (notSelected) {
    bool badMomentumGenerated = true;
    while (badMomentumGenerated) {
      if (MinTheta > 90. * Deg2Rad)  //upgoing muons from neutrinos
        Cosmics->generateNuMu();
      else
        Cosmics->generate();  //dice one event now

      E = sqrt(Cosmics->momentum_times_charge() * Cosmics->momentum_times_charge() + MuonMass * MuonMass);
      Theta = TMath::ACos(Cosmics->cos_theta());  //angle has to be in RAD here
      Ngen += 1.;  //count number of initial cosmic events (in surface area), vertices will be added later
      badMomentumGenerated = false;
      Phi = RanGen->flat() * (MaxPhi - MinPhi) + MinPhi;
    }
    Norm->events_n100cos(E, Theta);  //test if this muon is in normalization range
    Ndiced += 1;                     //one more cosmic is diced

    // generate vertex
    double Nver = 0.;
    bool badVertexGenerated = true;
    while (badVertexGenerated) {
      RxzV = sqrt(RanGen->flat()) * SurfaceRadius;
      PhiV = RanGen->flat() * TwoPi;
      // check phi range (for a sphere with Target3dRadius around the target)
      double dPhi = Pi;
      if (RxzV > Target3dRadius)
        dPhi = asin(Target3dRadius / RxzV);
      double rotPhi = PhiV + Pi;
      if (rotPhi > TwoPi)
        rotPhi -= TwoPi;
      double disPhi = std::fabs(rotPhi - Phi);
      if (disPhi > Pi)
        disPhi = TwoPi - disPhi;
      if (disPhi < dPhi || AcptAllMu)
        badVertexGenerated = false;
      Nver += 1.;
    }
    Ngen += (Nver - 1.);  //add number of generated vertices to initial cosmic events

    // complete event at surface
    int id = 13;  // mu-
    if (Cosmics->momentum_times_charge() > 0.)
      id = -13;  // mu+
    double absMom = sqrt(E * E - MuonMass * MuonMass);
    double verMom = absMom * cos(Theta);
    double horMom = absMom * sin(Theta);
    double Px = horMom * sin(Phi);  // [GeV/c]
    double Py = -verMom;            // [GeV/c]
    double Pz = horMom * cos(Phi);  // [GeV/c]
    double Vx = RxzV * sin(PhiV);   // [mm]

    double Vy;
    if (MinTheta > 90. * Deg2Rad)  //upgoing muons from neutrinos
      Vy = -RadiusCMS;
    else
      Vy = SurfaceOfEarth + PlugWidth;  // [mm]

    double Vz = RxzV * cos(PhiV);                                           // [mm]
    double T0 = (RanGen->flat() * (MaxT0 - MinT0) + MinT0) * SpeedOfLight;  // [mm/c];

    Id_at = id;
    Px_at = Px;
    Py_at = Py;
    Pz_at = Pz;
    E_at = E;  //M_at = MuonMass;
    Vx_at = Vx;
    Vy_at = Vy;
    Vz_at = Vz;
    T0_at = T0;

    OneMuoEvt.create(id, Px, Py, Pz, E, MuonMass, Vx, Vy, Vz, T0);
    // if angles are ok, propagate to target
    if (goodOrientation()) {
      if (MinTheta > 90. * Deg2Rad)  //upgoing muons from neutrinos
        OneMuoEvt.propagate(0., RadiusOfTarget, ZDistOfTarget, ZCentrOfTarget, TrackerOnly, MTCCHalf);
      else
        OneMuoEvt.propagate(ElossScaleFactor, RadiusOfTarget, ZDistOfTarget, ZCentrOfTarget, TrackerOnly, MTCCHalf);
    }

    if ((OneMuoEvt.hitTarget() && sqrt(OneMuoEvt.e() * OneMuoEvt.e() - MuonMass * MuonMass) > MinP_CMS) ||
        AcptAllMu == true) {
      Nsel += 1.;  //count number of generated and accepted events
      notSelected = false;
    }
  }

  EventWeight = 1.;

  //just one outgoing particle at SurFace
  Id_sf.resize(1);
  Px_sf.resize(1);
  Py_sf.resize(1);
  Pz_sf.resize(1);
  E_sf.resize(1);
  //M_sf.resize(1);
  Vx_sf.resize(1);
  Vy_sf.resize(1);
  Vz_sf.resize(1);
  T0_sf.resize(1);

  Id_sf[0] = Id_at;
  Px_sf[0] = Px_at;
  Py_sf[0] = Py_at;
  Pz_sf[0] = Pz_at;
  E_sf[0] = E_at;  //M_fs[0] = MuonMass;
  Vx_sf[0] = Vx_at;
  Vy_sf[0] = Vy_at;
  Vz_sf[0] = Vz_at;
  T0_sf[0] = T0_at;

  //just one particle at UnderGround
  Id_ug.resize(1);
  Px_ug.resize(1);
  Py_ug.resize(1);
  Pz_ug.resize(1);
  E_ug.resize(1);
  //M_ug.resize(1);
  Vx_ug.resize(1);
  Vy_ug.resize(1);
  Vz_ug.resize(1);
  T0_ug.resize(1);

  Id_ug[0] = OneMuoEvt.id();
  Px_ug[0] = OneMuoEvt.px();
  Py_ug[0] = OneMuoEvt.py();
  Pz_ug[0] = OneMuoEvt.pz();
  E_ug[0] = OneMuoEvt.e();
  //M_ug[0] = OneMuoEvt.m();
  Vx_ug[0] = OneMuoEvt.vx();
  Vy_ug[0] = OneMuoEvt.vy();
  Vz_ug[0] = OneMuoEvt.vz();
  T0_ug[0] = OneMuoEvt.t0();

  // plot variables of selected events
#if ROOT_INTERACTIVE
  ene->Fill(OneMuoEvt.e());
  the->Fill((OneMuoEvt.theta() * Rad2Deg));
  phi->Fill((OneMuoEvt.phi() * Rad2Deg));
  ver->Fill((OneMuoEvt.vz() / 1000.), (OneMuoEvt.vx() / 1000.), (OneMuoEvt.vy() / 1000.));
#endif
  if (Debug) {
    std::cout << "new event" << std::endl;
    std::cout << "  Px,Py,Pz,E,m = " << OneMuoEvt.px() << ", " << OneMuoEvt.py() << ", " << OneMuoEvt.pz() << ", "
              << OneMuoEvt.e() << ", " << OneMuoEvt.m() << " GeV" << std::endl;
    std::cout << "  Vx,Vy,Vz,t0  = " << OneMuoEvt.vx() << ", " << OneMuoEvt.vy() << ", " << OneMuoEvt.vz() << ", "
              << OneMuoEvt.t0() << " mm" << std::endl;
  }
  if (EventDisplay)
    displayEv();
}

bool CosmicMuonGenerator::nextMultiEvent() {
  if (Debug)
    std::cout << "\nEntered CosmicMuonGenerator::nextMultiEvent()" << std::endl;
  bool EvtRejected = true;
  bool MuInMaxDist = false;
  double MinDist;  //[mm]

  while (EvtRejected) {
    //read in event from SimTree
    //ULong64_t ientry = SimTree->LoadTree(SimTree_jentry);
    Long64_t ientry = SimTree->GetEntry(SimTree_jentry);
    std::cout << "CosmicMuonGenerator::nextMultiEvent(): SimTree_jentry="
              << SimTree_jentry
              //<< " ientry=" << ientry
              << " SimTreeEntries=" << SimTreeEntries << std::endl;
    if (ientry < 0)
      return false;  //stop run
    if (SimTree_jentry < SimTreeEntries) {
      SimTree_jentry++;
    } else {
      std::cout << "CosmicMuonGenerator.cc::nextMultiEvent: No more events in file!" << std::endl;
      return false;  //stop run
    }

    int nmuons = SimTree->shower_nParticlesWritten;
    if (nmuons < MultiMuonNmin) {
      std::cout << "CosmicMuonGenerator.cc: Warning!  Less than " << MultiMuonNmin << " muons in event!" << std::endl;
      std::cout << "trying next event from file" << std::endl;
      NskippedMultiMuonEvents++;
      continue;  //EvtRejected while loop: get next event from file
    }

    Px_mu.resize(nmuons);
    Py_mu.resize(nmuons);
    Pz_mu.resize(nmuons);
    P_mu.resize(nmuons);

    MinDist = 99999.e9;  //[mm]
    double MuMuDist;
    MuInMaxDist = false;
    //check if at least one muon pair closer than 30m at surface
    int NmuPmin = 0;
    for (int imu = 0; imu < nmuons; ++imu) {
      Px_mu[imu] =
          -SimTree->particle__Px[imu] * sin(NorthCMSzDeltaPhi) + SimTree->particle__Py[imu] * cos(NorthCMSzDeltaPhi);
      Pz_mu[imu] =
          SimTree->particle__Px[imu] * cos(NorthCMSzDeltaPhi) + SimTree->particle__Py[imu] * sin(NorthCMSzDeltaPhi);
      Py_mu[imu] = -SimTree->particle__Pz[imu];  //Corsika down going particles defined in -z direction!
      P_mu[imu] = sqrt(Px_mu[imu] * Px_mu[imu] + Py_mu[imu] * Py_mu[imu] + Pz_mu[imu] * Pz_mu[imu]);

      if (P_mu[imu] < MinP_CMS && AcptAllMu == false)
        continue;
      else if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)
        continue;
      else
        NmuPmin++;

      for (int jmu = 0; jmu < imu; ++jmu) {
        if (P_mu[jmu] < MinP_CMS && AcptAllMu == false)
          continue;
        if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)
          continue;
        MuMuDist = sqrt((SimTree->particle__x[imu] - SimTree->particle__x[jmu]) *
                            (SimTree->particle__x[imu] - SimTree->particle__x[jmu]) +
                        (SimTree->particle__y[imu] - SimTree->particle__y[jmu]) *
                            (SimTree->particle__y[imu] - SimTree->particle__y[jmu])) *
                   10.;  //CORSIKA [cm] to CMSCGEN [mm]
        if (MuMuDist < MinDist)
          MinDist = MuMuDist;
        if (MuMuDist < 2. * Target3dRadius)
          MuInMaxDist = true;
      }
    }
    if (MultiMuonNmin >= 2) {
      if (MuInMaxDist) {
        NcloseMultiMuonEvents++;
      } else {
        std::cout << "CosmicMuonGenerator.cc: Warning! No muon pair closer than " << 2. * Target3dRadius / 1000.
                  << "m   MinDist=" << MinDist / 1000. << "m at surface" << std::endl;
        std::cout << "Fraction of too wide opening angle multi muon events: "
                  << 1 - double(NcloseMultiMuonEvents) / SimTree_jentry << std::endl;
        std::cout << "NcloseMultiMuonEvents=" << NcloseMultiMuonEvents << std::endl;
        std::cout << "trying next event from file" << std::endl;
        NskippedMultiMuonEvents++;
        continue;  //EvtRejected while loop: get next event from file
      }
    }

    if (NmuPmin < MultiMuonNmin && AcptAllMu == false) {  //take single muon events consistently into account
      NskippedMultiMuonEvents++;
      continue;  //EvtRejected while loop: get next event from file
    }

    if (Debug)
      if (MultiMuonNmin >= 2)
        std::cout << "start trial do loop: MuMuDist=" << MinDist / 1000. << "[m]   Nmuons=" << nmuons
                  << "  NcloseMultiMuonEvents=" << NcloseMultiMuonEvents
                  << "  NskippedMultiMuonEvents=" << NskippedMultiMuonEvents << std::endl;

    //int primary_id = SimTree->run_ParticleID;
    Id_at = SimTree->shower_EventID;

    double M_at = 0.;
    //if (Id_at == 13) {
    Id_at = 2212;       //convert from Corsika to HepPDT
    M_at = 938.272e-3;  //[GeV] mass
    //}

    E_at = SimTree->shower_Energy;
    Theta_at = SimTree->shower_Theta;
    double phi_at = SimTree->shower_Phi - NorthCMSzDeltaPhi;  //rotate by almost 90 degrees
    if (phi_at < -Pi)
      phi_at += TwoPi;  //bring into interval (-Pi,Pi]
    else if (phi_at > Pi)
      phi_at -= TwoPi;
    double P_at = sqrt(E_at * E_at - M_at * M_at);
    //need to rotate about 90degrees around x->N axis => y<=>z,
    //then rotate new x-z-plane from x->North to x->LHC centre
    Px_at = P_at * sin(Theta_at) * sin(phi_at);
    Py_at = -P_at * cos(Theta_at);
    Pz_at = P_at * sin(Theta_at) * cos(phi_at);

    //compute maximal theta of secondary muons
    double theta_mu_max = Theta_at;
    double theta_mu_min = Theta_at;

    double phi_rel_min = 0.;  //phi_mu_min - phi_at
    double phi_rel_max = 0.;  //phi_mu_max - phi_at

    //std::cout << "SimTree->shower_Energy=" << SimTree->shower_Energy <<std::endl;

    Theta_mu.resize(nmuons);
    for (int imu = 0; imu < nmuons; ++imu) {
      Theta_mu[imu] = acos(-Py_mu[imu] / P_mu[imu]);
      if (Theta_mu[imu] > theta_mu_max)
        theta_mu_max = Theta_mu[imu];
      if (Theta_mu[imu] < theta_mu_min)
        theta_mu_min = Theta_mu[imu];

      double phi_mu = atan2(Px_mu[imu], Pz_mu[imu]);  // in (-Pi,Pi]
      double phi_rel = phi_mu - phi_at;
      if (phi_rel < -Pi)
        phi_rel += TwoPi;  //bring into interval (-Pi,Pi]
      else if (phi_rel > Pi)
        phi_rel -= TwoPi;
      if (phi_rel < phi_rel_min)
        phi_rel_min = phi_rel;
      else if (phi_rel > phi_rel_max)
        phi_rel_max = phi_rel;
    }

    double h_sf = SurfaceOfEarth + PlugWidth;  //[mm]

    double R_at = h_sf * tan(Theta_at);

    double JdRxzV_dR_trans = 1.;
    double JdPhiV_dPhi_trans = 1.;
    double JdR_trans_sqrt = 1.;

    //chose random vertex Phi and Rxz weighted to speed up and smoothen
    double R_mu_max = (h_sf + Target3dRadius) * tan(theta_mu_max);
    double R_max = std::min(SurfaceRadius, R_mu_max);
    double R_mu_min = (h_sf - Target3dRadius) * tan(theta_mu_min);
    double R_min = std::max(0., R_mu_min);

    if (R_at > SurfaceRadius) {
      std::cout << "CosmicMuonGenerator.cc: Warning! R_at=" << R_at << " > SurfaceRadius=" << SurfaceRadius
                << std::endl;
    }

    //do phase space transformation for horizontal radius R

    //determine first phase space limits

    double psR1min = R_min + 0.25 * (R_max - R_min);
    double psR1max = std::min(SurfaceRadius, R_max - 0.25 * (R_max - R_min));  //no R's beyond R_max
    double psR1 = psR1max - psR1min;

    double psR2min = R_min;
    double psR2max = R_max;
    double psR2 = psR2max - psR2min;

    double psR3min = 0.;
    double psR3max = SurfaceRadius;
    double psR3 = psR3max - psR3min;

    //double psall = psR1+psR2+psR3;
    double psRall = psR3;

    double fR1 = psR1 / psRall, fR2 = psR2 / psRall, fR3 = psR3 / psRall;  //f1+f2+f3=130%
    double pR1 = 0.25, pR2 = 0.7, pR3 = 0.05;

    //do phase space transformation for azimuthal angle phi
    double psPh1 = 0.5 * (phi_rel_max - phi_rel_min);
    double psPh2 = phi_rel_max - phi_rel_min;
    double psPh3 = TwoPi;
    double psPhall = psPh3;

    double fPh1 = psPh1 / psPhall, fPh2 = psPh2 / psPhall,
           fPh3 = psPh3 / psPhall;  //(f1+f2+f3=TwoPi+f1+f2)/(TwoPi+f1+f2)

    double pPh1 = 0.25, pPh2 = 0.7, pPh3 = 0.05;

    Trials = 0;          //global int trials
    double trials = 0.;  //local weighted trials
    Vx_mu.resize(nmuons);
    Vy_mu.resize(nmuons);
    Vz_mu.resize(nmuons);
    int NmuHitTarget = 0;
    while (NmuHitTarget < MultiMuonNmin) {
      NmuHitTarget = 0;  //re-initialize every loop iteration
      double Nver = 0.;

      //chose phase space class
      double RxzV;
      double which_R_class = RanGen->flat();
      if (which_R_class < pR1) {  //pR1% in psR1
        RxzV = psR1min + psR1 * RanGen->flat();
        JdRxzV_dR_trans = fR1 / pR1 * SurfaceRadius / psR1;
      } else if (which_R_class < pR1 + pR2) {  //further pR2% in psR2
        RxzV = psR2min + psR2 * RanGen->flat();
        JdRxzV_dR_trans = fR2 / pR2 * SurfaceRadius / psR2;
      } else {  //remaining pR3% in psR3=[0., R_max]
        RxzV = psR3min + psR3 * RanGen->flat();
        JdRxzV_dR_trans = fR3 / pR3 * SurfaceRadius / psR3;
      }

      JdR_trans_sqrt = 2. * RxzV / SurfaceRadius;  //flat in sqrt(r) space

      //chose phase space class
      double PhiV;
      double which_phi_class = RanGen->flat();
      if (which_phi_class < pPh1) {  //pPh1% in psPh1
        PhiV = phi_at + phi_rel_min + psPh1 * RanGen->flat();
        JdPhiV_dPhi_trans = fPh1 / pPh1 * TwoPi / psPh1;
      } else if (which_phi_class < pPh1 + pPh2) {  //further pPh2% in psPh2
        PhiV = phi_at + phi_rel_min + psPh2 * RanGen->flat();
        JdPhiV_dPhi_trans = fPh2 / pPh2 * TwoPi / psPh2;
      } else {  //remaining pPh3% in psPh3=[-Pi,Pi]
        PhiV = phi_at + phi_rel_min + psPh3 * RanGen->flat();
        JdPhiV_dPhi_trans = fPh3 / pPh3 * TwoPi / psPh3;
      }

      //shuffle PhiV into [-Pi,+Pi] interval
      if (PhiV < -Pi)
        PhiV += TwoPi;
      else if (PhiV > Pi)
        PhiV -= TwoPi;

      Nver++;
      trials += JdR_trans_sqrt * JdRxzV_dR_trans * JdPhiV_dPhi_trans;
      Trials++;
      if (trials > max_Trials)
        break;              //while (Id_sf.size() < 2) loop
      Ngen += (Nver - 1.);  //add number of generated vertices to initial cosmic events

      Vx_at = RxzV * sin(PhiV);  // [mm]

      Vy_at = h_sf;  // [mm] (SurfaceOfEarth + PlugWidth; Determine primary particle height below)
      //Vy_at = SimTree->shower_StartingAltitude*10. + h_sf; // [mm]
      //std::cout << "SimTree->shower_StartingAltitude*10=" << SimTree->shower_StartingAltitude*10 <<std::endl;
      Vz_at = RxzV * cos(PhiV);  // [mm]

      int NmuHitTargetSphere = 0;
      for (int imu = 0; imu < nmuons; ++imu) {
        Vx_mu[imu] = Vx_at + (-SimTree->particle__x[imu] * sin(NorthCMSzDeltaPhi) +
                              SimTree->particle__y[imu] * cos(NorthCMSzDeltaPhi)) *
                                 10;  //[mm] (Corsika cm to CMSCGEN mm)
        Vy_mu[imu] = h_sf;            //[mm] fixed at surface + PlugWidth
        Vz_mu[imu] = Vz_at + (SimTree->particle__x[imu] * cos(NorthCMSzDeltaPhi) +
                              SimTree->particle__y[imu] * sin(NorthCMSzDeltaPhi)) *
                                 10;  //[mm] (Corsika cm to CMSCGEN mm)

        //add atmospheric height to primary particle (default SimTree->shower_StartingAltitude = 0.)
        double pt_sec = sqrt(Px_mu[imu] * Px_mu[imu] + Pz_mu[imu] * Pz_mu[imu]);
        double theta_sec = atan2(std::fabs(Py_mu[imu]), pt_sec);
        double r_sec = sqrt((Vx_mu[imu] - Vx_at) * (Vx_mu[imu] - Vx_at) + (Vz_mu[imu] - Vz_at) * (Vz_mu[imu] - Vz_at));
        double h_prod = r_sec * tan(theta_sec);
        if (h_prod + h_sf > Vy_at)
          Vy_at = h_prod + h_sf;

        //only muons
        if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)
          continue;

        if (P_mu[imu] < MinP_CMS && AcptAllMu == false)
          continue;

        //check here if at least 2 muons make it to the target sphere
        double Vxz_mu = sqrt(Vx_mu[imu] * Vx_mu[imu] + Vz_mu[imu] * Vz_mu[imu]);
        theta_mu_max = atan((Vxz_mu + Target3dRadius) / (h_sf - Target3dRadius));
        theta_mu_min = atan((Vxz_mu - Target3dRadius) / (h_sf + Target3dRadius));
        if (Theta_mu[imu] > theta_mu_min && Theta_mu[imu] < theta_mu_max) {
          // check phi range (for a sphere with Target3dRadius around the target)
          double dPhi = Pi;
          if (Vxz_mu > Target3dRadius)
            dPhi = asin(Target3dRadius / Vxz_mu);
          double PhiPmu = atan2(Px_mu[imu], Pz_mu[imu]);  //muon phi
          double PhiVmu = atan2(Vx_mu[imu], Vz_mu[imu]);  //muon phi
          double rotPhi = PhiVmu + Pi;
          if (rotPhi > Pi)
            rotPhi -= TwoPi;
          double disPhi = std::fabs(rotPhi - PhiPmu);
          if (disPhi > Pi)
            disPhi = TwoPi - disPhi;
          if (disPhi < dPhi) {
            NmuHitTargetSphere++;
          }
        }

      }  //end imu for loop

      if (NmuHitTargetSphere < MultiMuonNmin)
        continue;  //while (Id_sf.size() < 2) loop

      //nmuons outgoing particle at SurFace
      Id_sf.clear();
      Px_sf.clear();
      Py_sf.clear();
      Pz_sf.clear();
      E_sf.clear();
      //M_sf_out.clear();
      Vx_sf.clear();
      Vy_sf.clear();
      Vz_sf.clear();
      T0_sf.clear();

      //nmuons particles at UnderGround
      Id_ug.clear();
      Px_ug.clear();
      Py_ug.clear();
      Pz_ug.clear();
      E_ug.clear();
      //M_ug.clear();
      Vx_ug.clear();
      Vy_ug.clear();
      Vz_ug.clear();
      T0_ug.clear();

      int Id_sf_this = 0;
      double Px_sf_this = 0., Py_sf_this = 0., Pz_sf_this = 0.;
      double E_sf_this = 0.;
      //double M_sf_this=0.;
      double Vx_sf_this = 0., Vy_sf_this = 0., Vz_sf_this = 0.;
      double T0_sf_this = 0.;

      T0_at = SimTree->shower_GH_t0 * SpeedOfLight;  // [mm]

      for (int imu = 0; imu < nmuons; ++imu) {
        if (P_mu[imu] < MinP_CMS && AcptAllMu == false)
          continue;
        //for the time being only muons
        if (SimTree->particle__ParticleID[imu] != 5 && SimTree->particle__ParticleID[imu] != 6)
          continue;

        Id_sf_this = SimTree->particle__ParticleID[imu];
        if (Id_sf_this == 5)
          Id_sf_this = -13;  //mu+
        else if (Id_sf_this == 6)
          Id_sf_this = 13;  //mu-

        else if (Id_sf_this == 1)
          Id_sf_this = 22;  //gamma
        else if (Id_sf_this == 2)
          Id_sf_this = -11;  //e+
        else if (Id_sf_this == 3)
          Id_sf_this = 11;  //e-
        else if (Id_sf_this == 7)
          Id_sf_this = 111;  //pi0
        else if (Id_sf_this == 8)
          Id_sf_this = 211;  //pi+
        else if (Id_sf_this == 9)
          Id_sf_this = -211;  //pi-
        else if (Id_sf_this == 10)
          Id_sf_this = 130;  //KL0
        else if (Id_sf_this == 11)
          Id_sf_this = 321;  //K+
        else if (Id_sf_this == 12)
          Id_sf_this = -321;  //K-
        else if (Id_sf_this == 13)
          Id_sf_this = 2112;  //n
        else if (Id_sf_this == 14)
          Id_sf_this = 2212;  //p
        else if (Id_sf_this == 15)
          Id_sf_this = -2212;  //pbar
        else if (Id_sf_this == 16)
          Id_sf_this = 310;  //Ks0
        else if (Id_sf_this == 17)
          Id_sf_this = 221;  //eta
        else if (Id_sf_this == 18)
          Id_sf_this = 3122;  //Lambda

        else {
          std::cout << "CosmicMuonGenerator.cc: Warning! Muon Id=" << Id_sf_this << " from file read in" << std::endl;
          Id_sf_this = 99999;  //trouble
        }

        T0_sf_this = SimTree->particle__Time[imu] * SpeedOfLight;  //in [mm]

        Px_sf_this = Px_mu[imu];
        Py_sf_this = Py_mu[imu];  //Corsika down going particles defined in -z direction!
        Pz_sf_this = Pz_mu[imu];
        E_sf_this = sqrt(P_mu[imu] * P_mu[imu] + MuonMass * MuonMass);
        Vx_sf_this = Vx_mu[imu];
        Vy_sf_this = Vy_mu[imu];  //[mm] fixed at surface + PlugWidth
        Vz_sf_this = Vz_mu[imu];

        OneMuoEvt.create(Id_sf_this,
                         Px_sf_this,
                         Py_sf_this,
                         Pz_sf_this,
                         E_sf_this,
                         MuonMass,
                         Vx_sf_this,
                         Vy_sf_this,
                         Vz_sf_this,
                         T0_sf_this);
        // if angles are ok, propagate to target
        if (goodOrientation()) {
          OneMuoEvt.propagate(ElossScaleFactor, RadiusOfTarget, ZDistOfTarget, ZCentrOfTarget, TrackerOnly, MTCCHalf);
        }

        if ((OneMuoEvt.hitTarget() && sqrt(OneMuoEvt.e() * OneMuoEvt.e() - MuonMass * MuonMass) > MinP_CMS) ||
            AcptAllMu == true) {
          Id_sf.push_back(Id_sf_this);
          Px_sf.push_back(Px_sf_this);
          Py_sf.push_back(Py_sf_this);
          Pz_sf.push_back(Pz_sf_this);
          E_sf.push_back(E_sf_this);
          //M_sf.push_back(M_sf_this);
          Vx_sf.push_back(Vx_sf_this);
          Vy_sf.push_back(Vy_sf_this);
          Vz_sf.push_back(Vz_sf_this);
          T0_sf.push_back(T0_sf_this);
          //T0_sf.push_back(0.); //synchronised arrival for 100% efficient full simulation tests

          Id_ug.push_back(OneMuoEvt.id());
          Px_ug.push_back(OneMuoEvt.px());
          Py_ug.push_back(OneMuoEvt.py());
          Pz_ug.push_back(OneMuoEvt.pz());
          E_ug.push_back(OneMuoEvt.e());
          //M_sf.push_back(OneMuoEvt.m());
          Vx_ug.push_back(OneMuoEvt.vx());
          Vy_ug.push_back(OneMuoEvt.vy());
          Vz_ug.push_back(OneMuoEvt.vz());
          T0_ug.push_back(OneMuoEvt.t0());

          NmuHitTarget++;
        }
      }

    }  // while (Id_sf.size() < 2); //end of do loop

    if (trials > max_Trials) {
      std::cout << "CosmicMuonGenerator.cc: Warning! trials reach max_trials=" << max_Trials
                << " without accepting event!" << std::endl;
      if (Debug) {
        std::cout << " N(mu)=" << Id_ug.size();
        if (!Id_ug.empty())
          std::cout << " E[0]=" << E_ug[0] << " theta="
                    << acos(-Py_ug[0] / sqrt(Px_ug[0] * Px_ug[0] + Py_ug[0] * Py_ug[0] + Pz_ug[0] * Pz_ug[0]))
                    << " R_xz=" << sqrt(Vx_sf[0] * Vx_sf[0] + Vy_sf[0] * Vy_sf[0]);
        std::cout << " Theta_at=" << Theta_at << std::endl;
      }
      std::cout << "Unweighted int num of Trials = " << Trials << std::endl;
      std::cout << "trying next event (" << SimTree_jentry << ") from file" << std::endl;
      NskippedMultiMuonEvents++;
      continue;  //EvtRejected while loop: get next event from file
    } else {
      if (NmuHitTarget < MultiMuonNmin) {
        std::cout << "CosmicMuonGenerator.cc: Warning! less than " << MultiMuonNmin << " muons hit target: N(mu=)"
                  << NmuHitTarget << std::endl;
        std::cout << "trying next event (" << SimTree_jentry << ") from file" << std::endl;
        NskippedMultiMuonEvents++;
        continue;  //EvtRejected while loop: get next event from file
      } else {     //if (MuInMaxDist) {

        //re-adjust T0's of surviving muons shifted to trigger time box
        //(possible T0 increase due to propagation (loss of energy/speed + travelled distance))
        double T0_ug_min, T0_ug_max;
        T0_ug_min = T0_ug_max = T0_ug[0];
        double Tbox = (MaxT0 - MinT0) * SpeedOfLight;  // [mm]
        double minDeltaT0 = 2 * Tbox;
        for (unsigned int imu = 0; imu < Id_ug.size(); ++imu) {
          double T0_this = T0_ug[imu];
          if (T0_this < T0_ug_min)
            T0_ug_min = T0_this;
          if (T0_this > T0_ug_max)
            T0_ug_max = T0_this;
          if (Debug)
            std::cout << "imu=" << imu << " T0_this=" << T0_this
                      << " P=" << sqrt(pow(Px_ug[imu], 2) + pow(Py_ug[imu], 2) + pow(Pz_ug[imu], 2)) << std::endl;
          for (unsigned int jmu = 0; jmu < imu; ++jmu) {
            if (std::fabs(T0_ug[imu] - T0_ug[jmu]) < minDeltaT0)
              minDeltaT0 = std::fabs(T0_ug[imu] - T0_ug[jmu]);
          }
        }

        if (int(Id_ug.size()) >= MultiMuonNmin && MultiMuonNmin >= 2 && minDeltaT0 > Tbox)
          continue;  //EvtRejected while loop: get next event from file

        double T0_min = T0_ug_min + MinT0 * SpeedOfLight;  //-12.5ns * c [mm]
        double T0_max = T0_ug_max + MaxT0 * SpeedOfLight;  //+12.5ns * c [mm]

        //ckeck if >= NmuMin in time box, else throw new random number + augment evt weight
        int TboxTrials = 0;
        int NmuInTbox;
        double T0_offset, T0diff;
        for (int tboxtrial = 0; tboxtrial < 1000; ++tboxtrial) {  //max 1000 trials
          T0_offset = RanGen->flat() * (T0_max - T0_min);         // [mm]
          TboxTrials++;
          T0diff = T0_offset - T0_max;  // [mm]
          NmuInTbox = 0;
          for (unsigned int imu = 0; imu < Id_ug.size(); ++imu) {
            if (T0_ug[imu] + T0diff > MinT0 * SpeedOfLight && T0_ug[imu] + T0diff < MaxT0 * SpeedOfLight)
              NmuInTbox++;
          }
          if (NmuInTbox >= MultiMuonNmin)
            break;
        }
        if (NmuInTbox < MultiMuonNmin)
          continue;  //EvtRejected while loop: get next event from file

        if (Debug)
          std::cout << "initial T0_at=" << T0_at << " T0_min=" << T0_min << " T0_max=" << T0_max
                    << " T0_offset=" << T0_offset;
        T0_at += T0diff;  //[mm]
        if (Debug)
          std::cout << " T0diff=" << T0diff << std::endl;
        for (unsigned int imu = 0; imu < Id_ug.size(); ++imu) {  //adjust @ surface + underground
          if (Debug)
            std::cout << "before: T0_sf[" << imu << "]=" << T0_sf[imu] << "  T0_ug=" << T0_ug[imu];
          T0_sf[imu] += T0diff;
          T0_ug[imu] += T0diff;
          if (Debug)
            std::cout << "   after: T0_sf[" << imu << "]=" << T0_sf[imu] << "  T0_ug=" << T0_ug[imu] << std::endl;
        }
        if (Debug)
          std::cout << "T0diff=" << T0diff << " T0_at=" << T0_at << std::endl;

        Nsel += 1;
        EventWeight = JdR_trans_sqrt * JdRxzV_dR_trans * JdPhiV_dPhi_trans / (trials * TboxTrials);
        EvtRejected = false;
        if (Debug)
          std::cout << "CosmicMuonGenerator.cc: Theta_at=" << Theta_at << " phi_at=" << phi_at << " Px_at=" << Px_at
                    << " Py_at=" << Py_at << " Pz_at=" << Pz_at << " T0_at=" << T0_at << " Vx_at=" << Vx_at
                    << " Vy_at=" << Vy_at << " Vz_at=" << Vz_at << " EventWeight=" << EventWeight
                    << " Nmuons=" << Id_sf.size() << std::endl;
      }
    }

  }  //while loop EvtRejected

  return true;  //write event to HepMC;
}

void CosmicMuonGenerator::terminate() {
  if (NumberOfEvents > 0) {
    std::cout << std::endl;
    std::cout << "*********************************************************" << std::endl;
    std::cout << "*********************************************************" << std::endl;
    std::cout << "***                                                   ***" << std::endl;
    std::cout << "***    C O S M I C   M U O N   S T A T I S T I C S    ***" << std::endl;
    std::cout << "***                                                   ***" << std::endl;
    std::cout << "*********************************************************" << std::endl;
    std::cout << "*********************************************************" << std::endl;
    std::cout << std::endl;
    std::cout << "       number of initial cosmic events:  " << int(Ngen) << std::endl;
    std::cout << "       number of actually diced events:  " << int(Ndiced) << std::endl;
    std::cout << "       number of generated and accepted events:  " << int(Nsel) << std::endl;
    double selEff = Nsel / Ngen;  // selection efficiency
    std::cout << "       event selection efficiency:  " << selEff * 100. << "%" << std::endl;
    int n100cos =
        Norm->events_n100cos(0., 0.);  //get final amount of cosmics in defined range for normalisation of flux
    std::cout << "       events with ~100 GeV and 1 - cos(theta) < 1/2pi: " << n100cos << std::endl;
    std::cout << std::endl;
    std::cout << "       momentum range: " << MinP << " ... " << MaxP << " GeV" << std::endl;
    std::cout << "       theta  range:   " << MinTheta * Rad2Deg << " ... " << MaxTheta * Rad2Deg << " deg"
              << std::endl;
    std::cout << "       phi    range:   " << MinPhi * Rad2Deg << " ... " << MaxPhi * Rad2Deg << " deg" << std::endl;
    std::cout << "       time   range:   " << MinT0 << " ... " << MaxT0 << " ns" << std::endl;
    std::cout << "       energy  loss:   " << ElossScaleFactor * 100. << "%" << std::endl;
    std::cout << std::endl;
    double area = 1.e-6 * Pi * SurfaceRadius * SurfaceRadius;  // area on surface [m^2]
    if (MinTheta > 90. * Deg2Rad)                              //upgoing muons from neutrinos)
      std::cout << "       area of initial cosmics at CMS detector bottom surface:   " << area << " m^2" << std::endl;
    else
      std::cout << "       area of initial cosmics on Surface + PlugWidth:   " << area << " m^2" << std::endl;
    std::cout << "       depth of CMS detector (from Surface):   " << SurfaceOfEarth / 1000 << " m" << std::endl;

    //at least 100 evts., and
    //downgoing inside theta parametersisation range
    //or upgoing neutrino muons
    if ((n100cos > 0 && MaxTheta < 84.26 * Deg2Rad) || MinTheta > 90. * Deg2Rad) {
      // rate: corrected for area and selection-Eff. and normalized to known flux, integration over solid angle (dOmega) is implicit
      // flux is normalised with respect to known flux of vertical 100GeV muons in area at suface level
      // rate seen by detector is lower than rate at surface area, so has to be corrected for selection-Eff.
      // normalisation factor has unit [1/s/m^2]
      // rate = N/time --> normalization factor gives 1/runtime/area
      // normalization with respect to number of actually diced events (Ndiced)

      if (MinTheta > 90. * Deg2Rad) {  //upgoing muons from neutrinos)
        double Omega = (cos(MinTheta) - cos(MaxTheta)) * (MaxPhi - MinPhi);
        //EventRate = (Ndiced * 3.e-13) * Omega * area*1.e4 * selEff;//area in cm, flux=3.e-13cm^-2s^-1sr^-1
        EventRate = (Ndiced * 3.e-13) * Omega * 4. * RadiusOfTarget * ZDistOfTarget * 1.e-2 *
                    selEff;                               //area in cm, flux=3.e-13cm^-2s^-1sr^-1
        rateErr_stat = EventRate / sqrt((double)Ndiced);  // stat. rate error
        rateErr_syst = EventRate / 3.e-13 * 1.0e-13;      // syst. rate error, from error of known flux
      } else {
        EventRate = (Ndiced * Norm->norm(n100cos)) * area * selEff;
        rateErr_stat = EventRate / sqrt((double)n100cos);  // stat. rate error
        rateErr_syst = EventRate / 2.63e-3 * 0.06e-3;      // syst. rate error, from error of known flux
      }

      // normalisation in region 1.-cos(theta) < 1./(2.*Pi), if MaxTheta even lower correct for this
      if (MaxTheta < 0.572) {
        double spacean = 2. * Pi * (1. - cos(MaxTheta));
        EventRate = (Ndiced * Norm->norm(n100cos)) * area * selEff * spacean;
        rateErr_stat = EventRate / sqrt((double)n100cos);  // rate error
        rateErr_syst = EventRate / 2.63e-3 * 0.06e-3;      // syst. rate error, from error of known flux
      }

    } else {
      EventRate = Nsel;  //no info as no muons at 100 GeV
      rateErr_stat = Nsel;
      rateErr_syst = Nsel;
      std::cout << std::endl;
      if (MinP > 100.)
        std::cout << " !!! MinP > 100 GeV. Cannot apply normalisation!" << std::endl;
      else if (MaxTheta > 84.26 * Deg2Rad)
        std::cout << " !!! Note: generated cosmics exceed parameterisation. No flux calculated!" << std::endl;

      else
        std::cout << " !!! Not enough statistics to apply normalisation (rate=1 +- 1) !!!" << std::endl;
    }

    std::cout << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" << std::endl;
    std::cout << "       rate is " << EventRate << " +-" << rateErr_stat << " (stat) "
              << "+-" << rateErr_syst << " (syst) "
              << " muons per second" << std::endl;
    if (EventRate != 0)
      std::cout << "       number of events corresponds to " << Nsel / EventRate << " s"
                << std::endl;  //runtime at CMS = Nsel/rate
    std::cout << "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" << std::endl;
    std::cout << std::endl;
    std::cout << "*********************************************************" << std::endl;
    std::cout << "*********************************************************" << std::endl;
  }
}

void CosmicMuonGenerator::checkIn() {
  if (MinP < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: min.energy is out of range (0 GeV ... inf]" << std::endl << std::endl;
  }
  if (MaxP < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.energy is out of range (0 GeV ... inf]" << std::endl << std::endl;
  }
  if (MaxP <= MinP) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.energy is not greater than min.energy" << std::endl << std::endl;
  }
  if (MinTheta < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: min.theta is out of range [0 deg ... 90 deg)" << std::endl << std::endl;
  }
  if (MaxTheta < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.theta is out of range [0 deg ... 90 deg)" << std::endl << std::endl;
  }
  if (MaxTheta <= MinTheta) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.theta is not greater than min.theta" << std::endl << std::endl;
  }
  if (MinPhi < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: min.phi is out of range [0 deg ... 360 deg]" << std::endl << std::endl;
  }
  if (MaxPhi < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.phi is out of range [0 deg ... 360 deg]" << std::endl << std::endl;
  }
  if (MaxPhi <= MinPhi) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.phi is not greater than min.phi" << std::endl << std::endl;
  }
  if (MaxT0 <= MinT0) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.t0 is not greater than min.t0" << std::endl << std::endl;
  }
  if (ElossScaleFactor < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: E-loss scale factor is out of range [0 ... inf)" << std::endl << std::endl;
  }
  if (MinEnu < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: min.Enu is out of range [0 GeV ... inf]" << std::endl << std::endl;
  }
  if (MaxEnu < 0.) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.Enu is out of range [0 GeV ... inf]" << std::endl << std::endl;
  }
  if (MaxEnu <= MinEnu) {
    NumberOfEvents = 0;
    std::cout << "  CMG-ERR: max.Enu is not greater than min.Enu" << std::endl << std::endl;
  }
}

bool CosmicMuonGenerator::goodOrientation() {
  // check angular range (for a sphere with Target3dRadius around the target)
  bool goodAngles = false;
  bool phiaccepted = false;
  bool thetaaccepted = false;
  double RxzV = sqrt(OneMuoEvt.vx() * OneMuoEvt.vx() + OneMuoEvt.vz() * OneMuoEvt.vz());

  double rVY;
  if (MinTheta > 90. * Deg2Rad)  //upgoing muons from neutrinos
    rVY = -sqrt(RxzV * RxzV + RadiusCMS * RadiusCMS);
  else
    rVY = sqrt(RxzV * RxzV + (SurfaceOfEarth + PlugWidth) * (SurfaceOfEarth + PlugWidth));

  double Phi = OneMuoEvt.phi();
  double PhiV = atan2(OneMuoEvt.vx(), OneMuoEvt.vz()) + Pi;
  if (PhiV > TwoPi)
    PhiV -= TwoPi;
  double disPhi = std::fabs(PhiV - Phi);
  if (disPhi > Pi)
    disPhi = TwoPi - disPhi;
  double dPhi = Pi;
  if (RxzV > Target3dRadius)
    dPhi = asin(Target3dRadius / RxzV);
  if (disPhi < dPhi)
    phiaccepted = true;
  double Theta = OneMuoEvt.theta();
  double ThetaV = asin(RxzV / rVY);
  double dTheta = Pi;
  if (std::fabs(rVY) > Target3dRadius)
    dTheta = asin(Target3dRadius / std::fabs(rVY));
  //std::cout << "    dPhi = " <<   dPhi << "  (" <<   Phi << " <p|V> " <<   PhiV << ")" << std::endl;
  //std::cout << "  dTheta = " << dTheta << "  (" << Theta << " <p|V> " << ThetaV << ")" << std::endl;

  if (!phiaccepted && RxzV < Target3dRadius)
    //if (RxzV < Target3dRadius)
    std::cout << "Rejected phi=" << Phi << "  PhiV=" << PhiV << "  dPhi=" << dPhi << "  disPhi=" << disPhi
              << "  RxzV=" << RxzV << "  Target3dRadius=" << Target3dRadius << "  Theta=" << Theta << std::endl;

  if (std::fabs(Theta - ThetaV) < dTheta)
    thetaaccepted = true;
  if (phiaccepted && thetaaccepted)
    goodAngles = true;
  return goodAngles;
}

void CosmicMuonGenerator::initEvDis() {
#if ROOT_INTERACTIVE
  float rCMS = RadiusCMS / 1000.;
  float zCMS = Z_DistCMS / 1000.;
  if (TrackerOnly == true) {
    rCMS = RadiusTracker / 1000.;
    zCMS = Z_DistTracker / 1000.;
  }
  TH2F* disXY = new TH2F("disXY", "X-Y view", 160, -rCMS, rCMS, 160, -rCMS, rCMS);
  TH2F* disZY = new TH2F("disZY", "Z-Y view", 150, -zCMS, zCMS, 160, -rCMS, rCMS);
  gStyle->SetPalette(1, 0);
  gStyle->SetMarkerColor(1);
  gStyle->SetMarkerSize(1.5);
  TCanvas* disC = new TCanvas("disC", "Cosmic Muon Event Display", 0, 0, 800, 410);
  disC->Divide(2, 1);
  disC->cd(1);
  gPad->SetTicks(1, 1);
  disXY->SetMinimum(log10(MinP));
  disXY->SetMaximum(log10(MaxP));
  disXY->GetXaxis()->SetLabelSize(0.05);
  disXY->GetXaxis()->SetTitleSize(0.05);
  disXY->GetXaxis()->SetTitleOffset(1.0);
  disXY->GetXaxis()->SetTitle("X [m]");
  disXY->GetYaxis()->SetLabelSize(0.05);
  disXY->GetYaxis()->SetTitleSize(0.05);
  disXY->GetYaxis()->SetTitleOffset(0.8);
  disXY->GetYaxis()->SetTitle("Y [m]");
  disC->cd(2);
  gPad->SetGrid(1, 1);
  gPad->SetTicks(1, 1);
  disZY->SetMinimum(log10(MinP));
  disZY->SetMaximum(log10(MaxP));
  disZY->GetXaxis()->SetLabelSize(0.05);
  disZY->GetXaxis()->SetTitleSize(0.05);
  disZY->GetXaxis()->SetTitleOffset(1.0);
  disZY->GetXaxis()->SetTitle("Z [m]");
  disZY->GetYaxis()->SetLabelSize(0.05);
  disZY->GetYaxis()->SetTitleSize(0.05);
  disZY->GetYaxis()->SetTitleOffset(0.8);
  disZY->GetYaxis()->SetTitle("Y [m]");
#endif
}

void CosmicMuonGenerator::displayEv() {
#if ROOT_INTERACTIVE
  double RadiusDet = RadiusCMS;
  double Z_DistDet = Z_DistCMS;
  if (TrackerOnly == true) {
    RadiusDet = RadiusTracker;
    Z_DistDet = Z_DistTracker;
  }
  disXY->Reset();
  disZY->Reset();
  TMarker* InteractionPoint = new TMarker(0., 0., 2);
  TArc* r8m = new TArc(0., 0., (RadiusDet / 1000.));
  TLatex* logEaxis = new TLatex();
  logEaxis->SetTextSize(0.05);
  float energy = float(OneMuoEvt.e());
  float verX = float(OneMuoEvt.vx() / 1000.);  // [m]
  float verY = float(OneMuoEvt.vy() / 1000.);  // [m]
  float verZ = float(OneMuoEvt.vz() / 1000.);  // [m]
  float dirX = float(OneMuoEvt.px()) / std::fabs(OneMuoEvt.py());
  float dirY = float(OneMuoEvt.py()) / std::fabs(OneMuoEvt.py());
  float dirZ = float(OneMuoEvt.pz()) / std::fabs(OneMuoEvt.py());
  float yStep = disXY->GetYaxis()->GetBinWidth(1);
  int NbinY = disXY->GetYaxis()->GetNbins();
  for (int iy = 0; iy < NbinY; ++iy) {
    verX += dirX * yStep;
    verY += dirY * yStep;
    verZ += dirZ * yStep;
    float rXY = sqrt(verX * verX + verY * verY) * 1000.;  // [mm]
    float absZ = std::fabs(verZ) * 1000.;                 // [mm]
    if (rXY < RadiusDet && absZ < Z_DistDet) {
      disXY->Fill(verX, verY, log10(energy));
      disZY->Fill(verZ, verY, log10(energy));
      disC->cd(1);
      disXY->Draw("COLZ");
      InteractionPoint->Draw("SAME");
      r8m->Draw("SAME");
      logEaxis->DrawLatex((0.65 * RadiusDet / 1000.), (1.08 * RadiusDet / 1000.), "log_{10}E(#mu^{#pm})");
      disC->cd(2);
      disZY->Draw("COL");
      InteractionPoint->Draw("SAME");
      gPad->Update();
    }
  }
#endif
}

void CosmicMuonGenerator::setNumberOfEvents(unsigned int N) {
  if (NotInitialized)
    NumberOfEvents = N;
}

void CosmicMuonGenerator::setRanSeed(int N) {
  if (NotInitialized)
    RanSeed = N;
}

void CosmicMuonGenerator::setMinP(double P) {
  if (NotInitialized)
    MinP = P;
}

void CosmicMuonGenerator::setMinP_CMS(double P) {
  if (NotInitialized)
    MinP_CMS = P;
}

void CosmicMuonGenerator::setMaxP(double P) {
  if (NotInitialized)
    MaxP = P;
}

void CosmicMuonGenerator::setMinTheta(double Theta) {
  if (NotInitialized)
    MinTheta = Theta * Deg2Rad;
}

void CosmicMuonGenerator::setMaxTheta(double Theta) {
  if (NotInitialized)
    MaxTheta = Theta * Deg2Rad;
}

void CosmicMuonGenerator::setMinPhi(double Phi) {
  if (NotInitialized)
    MinPhi = Phi * Deg2Rad;
}

void CosmicMuonGenerator::setMaxPhi(double Phi) {
  if (NotInitialized)
    MaxPhi = Phi * Deg2Rad;
}

void CosmicMuonGenerator::setMinT0(double T0) {
  if (NotInitialized)
    MinT0 = T0;
}

void CosmicMuonGenerator::setMaxT0(double T0) {
  if (NotInitialized)
    MaxT0 = T0;
}

void CosmicMuonGenerator::setElossScaleFactor(double ElossScaleFact) {
  if (NotInitialized)
    ElossScaleFactor = ElossScaleFact;
}

void CosmicMuonGenerator::setRadiusOfTarget(double R) {
  if (NotInitialized)
    RadiusOfTarget = R;
}

void CosmicMuonGenerator::setZDistOfTarget(double Z) {
  if (NotInitialized)
    ZDistOfTarget = Z;
}

void CosmicMuonGenerator::setZCentrOfTarget(double Z) {
  if (NotInitialized)
    ZCentrOfTarget = Z;
}

void CosmicMuonGenerator::setTrackerOnly(bool Tracker) {
  if (NotInitialized)
    TrackerOnly = Tracker;
}

void CosmicMuonGenerator::setMultiMuon(bool MultiMu) {
  if (NotInitialized)
    MultiMuon = MultiMu;
}
void CosmicMuonGenerator::setMultiMuonFileName(std::string MultiMuFile) {
  if (NotInitialized)
    MultiMuonFileName = MultiMuFile;
}
void CosmicMuonGenerator::setMultiMuonFileFirstEvent(int MultiMuFile1stEvt) {
  if (NotInitialized)
    MultiMuonFileFirstEvent = MultiMuFile1stEvt;
}
void CosmicMuonGenerator::setMultiMuonNmin(int MultiMuNmin) {
  if (NotInitialized)
    MultiMuonNmin = MultiMuNmin;
}

void CosmicMuonGenerator::setTIFOnly_constant(bool TIF) {
  if (NotInitialized)
    TIFOnly_constant = TIF;
}

void CosmicMuonGenerator::setTIFOnly_linear(bool TIF) {
  if (NotInitialized)
    TIFOnly_linear = TIF;
}
void CosmicMuonGenerator::setMTCCHalf(bool MTCC) {
  if (NotInitialized)
    MTCCHalf = MTCC;
}

void CosmicMuonGenerator::setPlugVx(double PlugVtx) {
  if (NotInitialized)
    PlugVx = PlugVtx;
}
void CosmicMuonGenerator::setPlugVz(double PlugVtz) {
  if (NotInitialized)
    PlugVz = PlugVtz;
}
void CosmicMuonGenerator::setRhoAir(double VarRhoAir) {
  if (NotInitialized)
    RhoAir = VarRhoAir;
}
void CosmicMuonGenerator::setRhoWall(double VarRhoWall) {
  if (NotInitialized)
    RhoWall = VarRhoWall;
}
void CosmicMuonGenerator::setRhoRock(double VarRhoRock) {
  if (NotInitialized)
    RhoRock = VarRhoRock;
}
void CosmicMuonGenerator::setRhoClay(double VarRhoClay) {
  if (NotInitialized)
    RhoClay = VarRhoClay;
}
void CosmicMuonGenerator::setRhoPlug(double VarRhoPlug) {
  if (NotInitialized)
    RhoPlug = VarRhoPlug;
}
void CosmicMuonGenerator::setClayWidth(double ClayLayerWidth) {
  if (NotInitialized)
    ClayWidth = ClayLayerWidth;
}

void CosmicMuonGenerator::setMinEnu(double MinEn) {
  if (NotInitialized)
    MinEnu = MinEn;
}
void CosmicMuonGenerator::setMaxEnu(double MaxEn) {
  if (NotInitialized)
    MaxEnu = MaxEn;
}
void CosmicMuonGenerator::setNuProdAlt(double NuPrdAlt) {
  if (NotInitialized)
    NuProdAlt = NuPrdAlt;
}

double CosmicMuonGenerator::getRate() { return EventRate; }

void CosmicMuonGenerator::setAcptAllMu(bool AllMu) {
  if (NotInitialized)
    AcptAllMu = AllMu;
}