BmnFD.cxx

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#include "BmnFD.h"
 
#include "BmnFDGeo.h"
#include "BmnFDPoint.h"
#include "CbmStack.h"
#include "FairGeoInterface.h"
#include "FairGeoLoader.h"
#include "FairGeoNode.h"
#include "FairGeoRootBuilder.h"
#include "FairMCPoint.h"
#include "FairRootManager.h"
#include "FairVolume.h"
#include "TClonesArray.h"
#include "TGeoArb8.h"
#include "TGeoMCGeometry.h"
#include "TGeoManager.h"
#include "TLorentzVector.h"
#include "TParticle.h"
#include "TVector3.h"
#include "TVirtualMC.h"
 
#include <iostream>
// add on for debug
// #include "FairGeoG3Builder.h"
#include "FairRun.h"
#include "FairRuntimeDb.h"
#include "TObjArray.h"
#include "TParticlePDG.h"
 
// -----   Default constructor   -------------------------------------------
BmnFD::BmnFD()
{
    fFDCollection = new TClonesArray("BmnFDPoint");
    volDetector = 0;
    fPosIndex = 0;
    // fpreflag = 0;
    // fpostflag = 0;
    // fEventID=-1;
    fVerboseLevel = 1;
}
// -------------------------------------------------------------------------
 
// -----   Standard constructor   ------------------------------------------
BmnFD::BmnFD(const char* name, Bool_t active)
    : FairDetector(name, active)
{
    fFDCollection = new TClonesArray("BmnFDPoint");
    fPosIndex = 0;
    volDetector = 0;
    // fpreflag = 0;
    // fpostflag = 0;
    // fEventID=-1;
    fVerboseLevel = 1;
}
// -------------------------------------------------------------------------
 
// -----   Destructor   ----------------------------------------------------
BmnFD::~BmnFD()
{
    if (fFDCollection) {
        fFDCollection->Delete();
        delete fFDCollection;
    }
}
// -------------------------------------------------------------------------
 
// -----   Public method Intialize   ---------------------------------------
void BmnFD::Initialize()
{
    // Init function
 
    FairDetector::Initialize();
    // FairRun* sim = FairRun::Instance();
    // FairRuntimeDb* rtdb=sim->GetRuntimeDb();
}
// -------------------------------------------------------------------------
void BmnFD::BeginEvent()
{
    // Begin of the event
}
 
// -----   Public method ProcessHits  --------------------------------------
Bool_t BmnFD::ProcessHits(FairVolume* vol)
{
 
    // if (TMath::Abs(gMC->TrackCharge()) <= 0) return kFALSE;
 
    static const Double_t dP = 1.032;
    static const Double_t BirkC1 = 0.013 / dP;
    static const Double_t BirkC2 = 9.6e-6 / (dP * dP);
 
    static Double_t lightYield;
    static Double_t timeIn;
    static Double_t timeOut;
    static Double_t lengthtrack;
    // static Double_t de_dx;
 
    Int_t ivol = vol->getMCid();
    // TLorentzVector tPos1, tMom1;
    // TLorentzVector tPos, tMom;
 
    // #define EDEBUG
#ifdef EDEBUG
    static Int_t lEDEBUGcounter = 0;
    if (lEDEBUGcounter < 1)
        std::cout << "EDEBUG-- BmnBd1::ProcessHits: entered" << gMC->CurrentVolPath() << endl;
#endif
 
    if (gMC->IsTrackEntering()) {
 
        ResetParameters();
 
        fELoss = 0.;
        fIsPrimary = 0;
        fCharge = -1;
        fPdgId = 0;
        lightYield = 0.;
        lengthtrack = 0.;
 
        TLorentzVector PosIn;
        gMC->TrackPosition(PosIn);
        fPosIn.SetXYZ(PosIn.X(), PosIn.Y(), PosIn.Z());
 
        TLorentzVector MomIn;
        gMC->TrackMomentum(MomIn);
        fMomIn.SetXYZ(MomIn.Px(), MomIn.Py(), MomIn.Pz());
 
        timeIn = gMC->TrackTime() * 1.0e09;
 
#ifdef EDEBUG
        // gMC->TrackPosition(tPos1);
        // gMC->TrackMomentum(tMom1);
#endif
 
        TParticle* part = 0;
        part = gMC->GetStack()->GetCurrentTrack();
 
        if (part) {
            fIsPrimary = (Int_t)part->IsPrimary();
            fCharge = (Int_t)part->GetPDG()->Charge() / 3.;
            fPdgId = (Int_t)part->GetPdgCode();
        }
    }
 
    if (gMC->TrackCharge() != 0) {
        Double_t BirkC1Mod = 0;
 
        if (TMath::Abs(gMC->TrackCharge()) >= 2)
 
            BirkC1Mod = BirkC1 * 7.2 / 12.6;
        else
            BirkC1Mod = BirkC1;
        if (gMC->TrackStep() > 0) {
 
            Double_t dedxcm = gMC->Edep() * 1000. / gMC->TrackStep();   //[MeV/cm]
            Double_t curLightYield = gMC->Edep() * 1000. / (1. + BirkC1Mod * dedxcm + BirkC2 * dedxcm * dedxcm);
            curLightYield /= 1000.;   //[GeV]
            lightYield += curLightYield;
        }
    }
 
    Double_t eLoss = gMC->Edep();
    if (eLoss > 0)
        fELoss += eLoss;
 
    Double_t slengthtrack = gMC->TrackStep();
    lengthtrack += slengthtrack;
 
    if ((gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()) && (fELoss > 0)) {
        TLorentzVector PosOut;
        gMC->TrackPosition(PosOut);
        fPosOut.SetXYZ(PosOut.X(), PosOut.Y(), PosOut.Z());
 
        TLorentzVector MomOut;
        gMC->TrackMomentum(MomOut);
        fMomOut.SetXYZ(MomOut.Px(), MomOut.Py(), MomOut.Pz());
 
        timeOut = gMC->TrackTime() * 1.0e09;
 
#ifndef EDEBUG
 
        if (fELoss == 0.)
            return kFALSE;
 
#endif
 
        fTrackID = gMC->GetStack()->GetCurrentTrackNumber();
 
        Double_t time = gMC->TrackTime() * 1.0e09;
        Double_t length = gMC->TrackLength();
 
        Int_t copyNo;
        /*Int_t ivol1 = */ gMC->CurrentVolID(copyNo);
 
        Int_t iCell;
        gMC->CurrentVolOffID(1, iCell);
 
#ifdef EDEBUG
        if (lEDEBUGcounter < 100) {
            std::cout << "EDEBUG-- BmnFD::ProcessHits: TrackID:" << fTrackID <<
                //    " ELoss: " << fELoss <<
                //    "   particle: " << (part->GetName()) <<
                "   " << gMC->CurrentVolPath() << " " << tPos.Z() <<
                //          "   " << (gMC->GetStack()->GetCurrentTrack()->GetMother(1)) <<
                "   " << ivol << "==" << gMC->CurrentVolID(copyNo) << "," << copyNo << "   "
                      << gMC->CurrentVolOffID(1, iCell) << " " << iCell << " " << gMC->CurrentVolOffName(1) << " "
                      << gMC->CurrentVolOffName(0) <<
                //    "   " << vol->getRealName() << "  " << gMC->CurrentVolPath() <<
                //    "   ivol,iCell,copyNo= " << ivol << ","<< iCell << ","<< copyNo <<
                //    "   " << vol->getRealName() << "  "<< gMC->CurrentVolName() << "  "<< gMC->CurrentVolPath() <<
                //    "   "  << ivol << ","<< vol->getVolumeId() << " : "<< gMC->CurrentVolID(copyNo) << ","<< copyNo <<
                //          "  "<< gMC->CurrentVolOffName(2) << "  "<< gMC->CurrentVolOffName(3) <<
                std::endl;
            lEDEBUGcounter++;
        }
 
        AddHit(fTrackID, ivol, copyNo, fPosIn, fPosOut, fMomIn, fMomOut, time, length, fELoss, fIsPrimary, fCharge,
               fPdgId, lightYield, timeIn, timeOut, lengthtrack);
#else
 
        AddHit(fTrackID, ivol, copyNo, fPosIn, fPosOut, fMomIn, fMomOut, time, length, fELoss, fIsPrimary, fCharge,
               fPdgId, lightYield, timeIn, timeOut, lengthtrack);
#endif
 
        ////      Int_t points = gMC->GetStack()->GetCurrentTrack()->GetMother(1);
        //       Int_t nBdPoints = (points & (1<<30)) >> 30;
        //       nBdPoints ++;
        //       if (nBdPoints > 1) nBdPoints = 1;
        //      points = ( points & ( ~ (1<<30) ) ) | (nBdPoints << 30);
        ////       points = ( points & ( ~ (1<<30) ) ) | (1 << 30);
        ////       gMC->GetStack()->GetCurrentTrack()->SetMother(1,points);
 
        ((CbmStack*)gMC->GetStack())->AddPoint(kFD);
    }
 
    return kTRUE;
 
#undef EDEBUG
}
 
// -----   Public method EndOfEvent   -----------------------------------------
void BmnFD::EndOfEvent()
{
    if (fVerboseLevel)
        Print("");
    Reset();
}
 
// -----   Public method Register   -------------------------------------------
void BmnFD::Register()
{
    FairRootManager::Instance()->Register("FDPoint", "FD", fFDCollection, kTRUE);
}
 
// -----   Public method GetCollection   --------------------------------------
TClonesArray* BmnFD::GetCollection(Int_t iColl) const
{
    if (iColl == 0)
        return fFDCollection;
 
    return NULL;
}
 
// -----   Public method Print   ----------------------------------------------
void BmnFD::Print(Option_t*) const
{
    Int_t nHits = fFDCollection->GetEntriesFast();
    cout << "-I- BmnFD: " << nHits << " points registered in this event." << endl;
 
    if (fVerboseLevel > 1)
        for (Int_t i = 0; i < nHits; i++)
            (*fFDCollection)[i]->Print();
}
 
// -----   Public method Reset   ----------------------------------------------
void BmnFD::Reset()
{
    fFDCollection->Delete();
 
    fPosIndex = 0;
}
 
// guarda in FairRootManager::CopyClones
// -----   Public method CopyClones   -----------------------------------------
void BmnFD::CopyClones(TClonesArray* cl1, TClonesArray* cl2, Int_t offset)
{
    Int_t nEntries = cl1->GetEntriesFast();
    // cout << "-I- BmnFD: " << nEntries << " entries to add." << endl;
    TClonesArray& clref = *cl2;
    BmnFDPoint* oldpoint = NULL;
    for (Int_t i = 0; i < nEntries; i++) {
        oldpoint = (BmnFDPoint*)cl1->At(i);
        Int_t index = oldpoint->GetTrackID() + offset;
        oldpoint->SetTrackID(index);
        new (clref[fPosIndex]) BmnFDPoint(*oldpoint);
        fPosIndex++;
    }
    cout << " -I- BmnFD: " << cl2->GetEntriesFast() << " merged entries." << endl;
}
 
//--------------------------------------------------------------------------------------------------------------------------------------
void BmnFD::ConstructGeometry()
{
    TString fileName = GetGeometryFileName();
    if (fileName.EndsWith(".root")) {
        LOG(info) << "Constructing FD geometry from ROOT file " << fileName.Data();
        ConstructRootGeometry();
    } else if (fileName.EndsWith(".geo")) {
        LOG(info) << "Constructing FD geometry from ASCII file " << fileName.Data();
        ConstructAsciiGeometry();
    } else
        LOG(fatal) << "Geometry format of FD file " << fileName.Data() << " not supported.";
}
//--------------------------------------------------------------------------------------------------------------------------------------
void BmnFD::ConstructAsciiGeometry()
{
    FairGeoLoader* geoLoad = FairGeoLoader::Instance();
    FairGeoInterface* geoFace = geoLoad->getGeoInterface();
    BmnFDGeo* FDGeo = new BmnFDGeo();
    FDGeo->setGeomFile(GetGeometryFileName());
    geoFace->addGeoModule(FDGeo);
 
    Bool_t rc = geoFace->readSet(FDGeo);
    if (rc)
        FDGeo->create(geoLoad->getGeoBuilder());
    TList* volList = FDGeo->getListOfVolumes();
 
    // store geo parameter
    FairRun* fRun = FairRun::Instance();
    FairRuntimeDb* rtdb = FairRun::Instance()->GetRuntimeDb();
    BmnFDGeoPar* par = (BmnFDGeoPar*)(rtdb->getContainer("BmnFDGeoPar"));
    TObjArray* fSensNodes = par->GetGeoSensitiveNodes();
    TObjArray* fPassNodes = par->GetGeoPassiveNodes();
 
    TListIter iter(volList);
    FairGeoNode* node = nullptr;
    FairGeoVolume* aVol = nullptr;
 
    while ((node = (FairGeoNode*)iter.Next())) {
        aVol = dynamic_cast<FairGeoVolume*>(node);
 
        if (node->isSensitive())
            fSensNodes->AddLast(aVol);
        else
            fPassNodes->AddLast(aVol);
    }
 
    par->setChanged();
    par->setInputVersion(fRun->GetRunId(), 1);
    ProcessNodes(volList);
}
 
//--------------------------------------------------------------------------------------------------------------------------------------
 
Bool_t BmnFD::CheckIfSensitive(std::string name)
{
    TString tsname = name;
    if (tsname.Contains("Active"))
        return kTRUE;
 
    return kFALSE;
}
//-------------------------------------------------------------------------
 
// -----   Private method AddHit   --------------------------------------------
BmnFDPoint* BmnFD::AddHit(Int_t trackID,
                          Int_t detID,
                          Int_t copyNo,
                          TVector3 posIn,
                          TVector3 posOut,
                          TVector3 momIn,
                          TVector3 momOut,
                          Double_t time,
                          Double_t length,
                          Double_t eLoss,
                          Bool_t isPrimary,
                          Double_t charge,
                          Int_t pdgId,
                          Double_t lightYield,
                          Double_t timeIn,
                          Double_t timeOut,
                          Double_t lengthtrack)
{
 
    TClonesArray& clref = *fFDCollection;
    Int_t size = clref.GetEntriesFast();
    return new (clref[size]) BmnFDPoint(trackID, detID, copyNo, posIn, posOut, momIn, momOut, time, length, eLoss,
                                        isPrimary, charge, pdgId, lightYield, timeIn, timeOut, lengthtrack);
}