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HcalForwardAnalysis.cc
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1 // system include files
2 #include <cmath>
3 #include <iostream>
4 #include <iomanip>
5 
6 // user include files
7 #include "SimG4CMS/ShowerLibraryProducer/interface/HcalForwardAnalysis.h"
8 
9 #include "SimG4Core/Notification/interface/BeginOfRun.h"
10 #include "SimG4Core/Notification/interface/BeginOfEvent.h"
11 #include "SimG4Core/Notification/interface/EndOfEvent.h"
12 
13 #include "DataFormats/Math/interface/Point3D.h"
14 
15 #include "FWCore/Framework/interface/Event.h"
16 #include "FWCore/Framework/interface/EventSetup.h"
17 #include "FWCore/Framework/interface/ESHandle.h"
18 #include "FWCore/MessageLogger/interface/MessageLogger.h"
19 #include "FWCore/ParameterSet/interface/ParameterSet.h"
20 
21 #include "G4SDManager.hh"
22 #include "G4VProcess.hh"
23 #include "G4HCofThisEvent.hh"
24 #include "CLHEP/Units/GlobalSystemOfUnits.h"
25 #include "CLHEP/Units/GlobalPhysicalConstants.h"
26 
27 HcalForwardAnalysis::HcalForwardAnalysis(const edm::ParameterSet& p) {
28  edm::ParameterSet m_SLP = p.getParameter<edm::ParameterSet>("HFShowerLibraryProducer");
29  theNames = m_SLP.getParameter<std::vector<std::string> >("Names");
30  //LibVer = m_HS.getParameter<std::string> ("LibVer");
31  //produces<HFShowerPhotonCollection> ();
32  init();
33  theEventCounter = 0;
34  nphot = 0;
35  for (int i = 0; i < 10000; ++i) {
36  x[i] = 0.;
37  y[i] = 0.;
38  z[i] = 0.;
39  t[i] = 0.;
40  lambda[i] = 0.;
41  fiberId[i] = 0;
42  }
43  primX = primY = primZ = primT = 0.;
44  primMomX = primMomY = primMomZ = 0.;
45 }
46 
47 HcalForwardAnalysis::~HcalForwardAnalysis() {}
48 
49 //
50 // member functions
51 //
52 
53 void HcalForwardAnalysis::produce(edm::Event& iEvent, const edm::EventSetup&) {
54  //std::auto_ptr<HFShowerPhotonCollection> product(new HFShowerPhotonCollection);
55  //edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis: =====> Filling event";
56  //fillEvent(*product);
57  //iEvent.put(product);
58  //std::auto_ptr<PHcalForwardLibInfo> product(new PHcalForwardLibInfo);
59  //fillEvent(*product);
60  fillEvent();
61  //iEvent.put(product);
62 }
63 
64 void HcalForwardAnalysis::init() {
65  theTree = theFile->make<TTree>("CherenkovPhotons", "Cherenkov Photons");
66  theTree->Branch("nphot", &nphot, "nphot/I");
67  theTree->Branch("x", &x, "x[nphot]/F");
68  theTree->Branch("y", &y, "y[nphot]/F");
69  theTree->Branch("z", &z, "z[nphot]/F");
70  theTree->Branch("t", &t, "t[nphot]/F");
71  theTree->Branch("lambda", &lambda, "lambda[nphot]/F");
72  theTree->Branch("fiberId", &fiberId, "fiberId[nphot]/I");
73  theTree->Branch("primX", &primX, "primX/F");
74  theTree->Branch("primY", &primY, "primY/F");
75  theTree->Branch("primZ", &primZ, "primZ/F");
76  theTree->Branch("primMomX", &primMomX, "primMomX/F");
77  theTree->Branch("primMomY", &primMomY, "primMomY/F");
78  theTree->Branch("primMomZ", &primMomZ, "primMomZ/F");
79  theTree->Branch("primT", &primT, "primT/F");
80 
81  // counter
82  count = 0;
83  evNum = 0;
84  clear();
85 }
86 
87 void HcalForwardAnalysis::update(const BeginOfRun* run) {
88  int irun = (*run)()->GetRunID();
89  edm::LogVerbatim("HcalForwardLib") << " =====> Begin of Run = " << irun;
90 }
91 
92 void HcalForwardAnalysis::update(const BeginOfEvent* evt) {
93  evNum = (*evt)()->GetEventID();
94  clear();
95  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis: =====> Begin of event = " << evNum;
96 }
97 
98 void HcalForwardAnalysis::update(const G4Step* aStep) {}
99 
100 void HcalForwardAnalysis::update(const EndOfEvent* evt) {
101  count++;
102 
103  //fill the buffer
104  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::Fill event " << (*evt)()->GetEventID();
105  setPhotons(evt);
106 
107  int iEvt = (*evt)()->GetEventID();
108  if (iEvt < 10)
109  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis:: Event " << iEvt;
110  else if ((iEvt < 100) && (iEvt % 10 == 0))
111  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis:: Event " << iEvt;
112  else if ((iEvt < 1000) && (iEvt % 100 == 0))
113  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis:: Event " << iEvt;
114  else if ((iEvt < 10000) && (iEvt % 1000 == 0))
115  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis:: Event " << iEvt;
116 }
117 
118 void HcalForwardAnalysis::setPhotons(const EndOfEvent* evt) {
119  int idHC, j;
120  FiberG4HitsCollection* theHC;
121  // Look for the Hit Collection of HCal
122  G4HCofThisEvent* allHC = (*evt)()->GetHCofThisEvent();
123  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis:: Has " << allHC->GetNumberOfCollections()
124  << " collections";
125  for (int k = 0; k < allHC->GetNumberOfCollections(); ++k) {
126  G4String name = (allHC->GetHC(k) == nullptr) ? "Unknown" : allHC->GetHC(k)->GetName();
127  G4String nameSD = (allHC->GetHC(k) == nullptr) ? "Unknown" : allHC->GetHC(k)->GetSDname();
128  edm::LogVerbatim("HcalForwardLib") << "Collecttion[" << k << "] " << allHC->GetHC(k) << " " << name << ":"
129  << nameSD;
130  }
131  std::string sdName = theNames[0]; //name for fiber hits
132  idHC = G4SDManager::GetSDMpointer()->GetCollectionID(sdName);
133  theHC = (FiberG4HitsCollection*)allHC->GetHC(idHC);
134  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons() Hit Collection for " << sdName << " of ID "
135  << idHC << " is obtained at " << theHC;
136  std::vector<HFShowerPhoton> ShortFiberPhotons;
137  std::vector<HFShowerPhoton> LongFiberPhotons;
138  LongFiberPhotons.clear();
139  ShortFiberPhotons.clear();
140  if (idHC >= 0 && theHC != nullptr) {
141  int thehc_entries = theHC->entries();
142  edm::LogVerbatim("HcalForwardLib") << "FiberhitSize " << thehc_entries;
143  for (j = 0; j < thehc_entries; j++) {
144  FiberG4Hit* aHit = (*theHC)[j];
145  std::vector<HFShowerPhoton> thePhotonsFromHit = aHit->photon();
146  edm::LogVerbatim("HcalForwardLib") << "Fiberhit " << j << " has " << thePhotonsFromHit.size() << " photons.";
147  int fTowerId = -1;
148  int fCellId = -1;
149  int fFiberId = -1;
150  parseDetId(aHit->towerId(), fTowerId, fCellId, fFiberId);
151  for (unsigned int iph = 0; iph < thePhotonsFromHit.size(); ++iph) {
152  if (aHit->depth() == 1)
153  LongFiberPhotons.push_back(thePhotonsFromHit[iph]);
154  if (aHit->depth() == 2)
155  ShortFiberPhotons.push_back(thePhotonsFromHit[iph]);
156  }
157  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons() NbPhotons " << thePhotonsFromHit.size()
158  << " towerId " << fTowerId << " cellId " << fCellId << " fiberId " << fFiberId
159  << " depth " << aHit->depth();
160  }
161  } else {
162  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons(): No Photons!";
163  return;
164  }
165  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons() LongFibPhotons: " << LongFiberPhotons.size()
166  << " ShortFibPhotons: " << ShortFiberPhotons.size();
167  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons() LongFibPhotons: " << LongFiberPhotons.size()
168  << " ShortFibPhotons: " << ShortFiberPhotons.size();
169 
170  //Chamber hits to find information about primary particle on surface
171  HFShowerG4HitsCollection* theChamberHC;
172  G4HCofThisEvent* allChamberHC = (*evt)()->GetHCofThisEvent();
173  sdName = theNames[1];
174  idHC = G4SDManager::GetSDMpointer()->GetCollectionID(sdName);
175  theChamberHC = (HFShowerG4HitsCollection*)allChamberHC->GetHC(idHC);
176  math::XYZPoint primPosOnSurf(0, 0, 0);
177  math::XYZPoint primMomDirOnSurf(0, 0, 0);
178  float primTimeOnSurf = 0;
179  // the chamber hit is for primary particle, but step size can be small
180  // (in newer Geant4 versions) and as a result primary particle may have
181  // multiple hits. We want to take last one which is close the HF absorber
182  if (idHC >= 0 && theChamberHC != nullptr) {
183  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons() Chamber Hits size: "
184  << theChamberHC->entries();
185  int thec_hc_entries = theChamberHC->entries();
186  for (j = 0; j < thec_hc_entries; ++j) {
187  HFShowerG4Hit* aHit = (*theChamberHC)[j];
188  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons() Chamber Hit id " << aHit->hitId()
189  << " track id " << aHit->trackId() << " prim. pos. " << aHit->globalPosition()
190  << " prom mom. dir. " << aHit->primaryMomDir() << " time " << aHit->time();
191  primPosOnSurf.SetXYZ(aHit->globalPosition().x(), aHit->globalPosition().y(), aHit->globalPosition().z());
192  primMomDirOnSurf.SetXYZ(aHit->primaryMomDir().x(), aHit->primaryMomDir().y(), aHit->primaryMomDir().z());
193  primTimeOnSurf = aHit->time();
194  }
195  } else {
196  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis::setPhotons(): No Chamber hits. Something is wrong!";
197  return;
198  }
199  primX = primPosOnSurf.x();
200  primY = primPosOnSurf.y();
201  primZ = primPosOnSurf.z();
202  primT = primTimeOnSurf;
203  primMomX = primMomDirOnSurf.x();
204  primMomY = primMomDirOnSurf.y();
205  primMomZ = primMomDirOnSurf.z();
206  //production point of Cherenkov photons in long fibers w.r.t local coordinates
207  float photonProdX = 0.;
208  float photonProdY = 0.;
209  float photonProdZ = 0.;
210  float photonProdTime = 0.;
211  //angles for rotation matrices
212  double theta = primMomDirOnSurf.theta();
213  double phi = primMomDirOnSurf.phi();
214 
215  for (unsigned int k = 0; k < LongFiberPhotons.size(); ++k) {
216  HFShowerPhoton aPhoton = LongFiberPhotons[k];
217  photonProdX = aPhoton.x() * cos(theta) * cos(phi) + aPhoton.y() * cos(theta) * sin(phi) - aPhoton.z() * sin(theta) -
218  primPosOnSurf.x();
219  photonProdY = -aPhoton.x() * sin(phi) + aPhoton.y() * cos(phi) - primPosOnSurf.y();
220  photonProdZ = aPhoton.x() * sin(theta) * cos(phi) + aPhoton.y() * sin(theta) * sin(phi) + aPhoton.z() * cos(theta) -
221  primPosOnSurf.z();
222  photonProdTime = aPhoton.t() - primTimeOnSurf;
223  thePhotons.push_back(Photon(1, photonProdX, photonProdY, photonProdZ, photonProdTime, aPhoton.lambda()));
224  }
225  for (unsigned int k = 0; k < ShortFiberPhotons.size(); ++k) {
226  HFShowerPhoton aPhoton = ShortFiberPhotons[k];
227  photonProdX = aPhoton.x() * cos(theta) * cos(phi) + aPhoton.y() * cos(theta) * sin(phi) - aPhoton.z() * sin(theta) -
228  primPosOnSurf.x();
229  photonProdY = -aPhoton.x() * sin(phi) + aPhoton.y() * cos(phi) - primPosOnSurf.y();
230  photonProdZ = aPhoton.x() * sin(theta) * cos(phi) + aPhoton.y() * sin(theta) * sin(phi) + aPhoton.z() * cos(theta) -
231  primPosOnSurf.z();
232  photonProdTime = aPhoton.t() - primTimeOnSurf;
233  thePhotons.push_back(Photon(2, photonProdX, photonProdY, photonProdZ, photonProdTime, aPhoton.lambda()));
234  }
235 }
236 void HcalForwardAnalysis::fillEvent() {
237  /*
238  edm::LogVerbatim("HcalForwardLib") << "HcalForwardAnalysis: =====> filledEvent";
239  */
240  nphot = int(thePhotons.size());
241  for (int i = 0; i < nphot; ++i) {
242  x[i] = thePhotons[i].x;
243  y[i] = thePhotons[i].y;
244  z[i] = thePhotons[i].z;
245  t[i] = thePhotons[i].t;
246  lambda[i] = thePhotons[i].lambda;
247  fiberId[i] = thePhotons[i].fiberId;
248  }
249  theTree->Fill();
250 }
251 void HcalForwardAnalysis::parseDetId(int id, int& tower, int& cell, int& fiber) {
252  tower = id / 10000;
253  cell = id / 10 - tower * 10;
254  fiber = id - tower * 10000 - cell * 10;
255 }
256 
257 void HcalForwardAnalysis::clear() {
258  nphot = 0;
259  for (int i = 0; i < 10000; ++i) {
260  x[i] = 0.;
261  y[i] = 0.;
262  z[i] = 0.;
263  t[i] = 0.;
264  lambda[i] = 0.;
265  fiberId[i] = 0;
266  }
267  primX = primY = primZ = primT = 0.;
268  primMomX = primMomY = primMomZ = 0.;
269 
270  thePhotons.clear();
271 }
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