X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=FMD%2FAliFMDReconstructor.cxx;h=0bd09864de5deed6c4e14c04d1423618a5b458bb;hb=3e008bd7e691d38f892f61e358bf14f8becb9adc;hp=fb3233c27bf9078255cb0a302c8a4b3925c60fc3;hpb=27301b0a52d83db6f3e014e09601caeef4eeb46e;p=u%2Fmrichter%2FAliRoot.git diff --git a/FMD/AliFMDReconstructor.cxx b/FMD/AliFMDReconstructor.cxx index fb3233c27bf..0bd09864de5 100644 --- a/FMD/AliFMDReconstructor.cxx +++ b/FMD/AliFMDReconstructor.cxx @@ -12,267 +12,671 @@ * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ - -//_________________________________________________________________________ -// This is a class that constructs ReconstParticles (reconstructed particles) -// out of Digits -// +/* $Id$ */ +/** @file AliFMDReconstructor.cxx + @author Christian Holm Christensen + @date Mon Mar 27 12:47:09 2006 + @brief FMD reconstruction +*/ +//____________________________________________________________________ +// +// This is a class that constructs AliFMDRecPoint objects from of Digits +// This class reads either digits from a TClonesArray or raw data from +// a DDL file (or similar), and stores the read ADC counts in an +// internal cache (fAdcs). The rec-points are made via the naiive +// method. +// //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia -////////////////////////////////////////////////////////////////////////////// - -// --- ROOT system --- -#include "TTask.h" -#include "TTree.h" -#include "TSystem.h" -#include "TFile.h" -#include "TROOT.h" -#include "TFolder.h" -#include "TH2F.h" - -// --- Standard library --- -#include -#include - -// --- AliRoot header files --- - -#include "AliRunLoader.h" -#include "AliLoader.h" - -#include "AliFMDdigit.h" -#include "AliFMDhit.h" -#include "AliFMDReconstParticles.h" -#include "AliFMD.h" -#include "AliFMDv1.h" -#include "AliFMDReconstructor.h" -#include "AliRun.h" -#include "AliConfig.h" -#include "AliHeader.h" -#include "AliGenEventHeader.h" +// Latest changes by Christian Holm Christensen +// +// +//____________________________________________________________________ + +// #include // ALILOG_H +// #include // ALIRUN_H +#include "AliFMDDebug.h" +#include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H +#include "AliFMDParameters.h" // ALIFMDPARAMETERS_H +#include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H +#include "AliFMDDigit.h" // ALIFMDDIGIT_H +#include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H +#include "AliFMDRawReader.h" // ALIFMDRAWREADER_H +#include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H +#include "AliESDEvent.h" // ALIESDEVENT_H +#include "AliESDVertex.h" // ALIESDVERTEX_H +#include "AliESDTZERO.h" // ALIESDVERTEX_H +#include // ALIESDFMD_H +#include +#include +#include +#include +#include +// Import revertexer into a private namespace (to prevent conflicts) +namespace { +# include "AliFMDESDRevertexer.h" +} + +class AliRawReader; + +//____________________________________________________________________ ClassImp(AliFMDReconstructor) +#if 0 + ; // This is here to keep Emacs for indenting the next line +#endif - -//____________________________________________________________________________ +//____________________________________________________________________ +AliFMDReconstructor::AliFMDReconstructor() + : AliReconstructor(), + fMult(0x0), + fNMult(0), + fTreeR(0x0), + fCurrentVertex(0), + fESDObj(0x0), + fNoiseFactor(0), + fAngleCorrect(kTRUE), + fVertexType(kNoVertex), + fESD(0x0), + fDiagnostics(kTRUE), + fDiagStep1(0), + fDiagStep2(0), + fDiagStep3(0), + fDiagStep4(0), + fDiagAll(0) +{ + // Make a new FMD reconstructor object - default CTOR. + SetNoiseFactor(); + SetAngleCorrect(); + if (AliDebugLevel() > 0) fDiagnostics = kTRUE; +} + -void AliFMDReconstructor::Reconstruct(AliRunLoader* runLoader) const -{ - //Collects all digits in the same active volume into number of particles - /* - Reconstruct number of particles - in given group of pads for given FMDvolume - determine by numberOfVolume , - numberOfMinSector,numberOfMaxSector, - numberOfMinRing, numberOgMaxRing - Reconstructor method choose dependence on number of empty pads - */ +//____________________________________________________________________ +AliFMDReconstructor::AliFMDReconstructor(const AliFMDReconstructor& other) + : AliReconstructor(), + fMult(other.fMult), + fNMult(other.fNMult), + fTreeR(other.fTreeR), + fCurrentVertex(other.fCurrentVertex), + fESDObj(other.fESDObj), + fNoiseFactor(other.fNoiseFactor), + fAngleCorrect(other.fAngleCorrect), + fVertexType(other.fVertexType), + fESD(other.fESD), + fDiagnostics(other.fDiagnostics), + fDiagStep1(other.fDiagStep1), + fDiagStep2(other.fDiagStep2), + fDiagStep3(other.fDiagStep3), + fDiagStep4(other.fDiagStep4), + fDiagAll(other.fDiagAll) +{ + // Copy constructor +} + +//____________________________________________________________________ +AliFMDReconstructor& +AliFMDReconstructor::operator=(const AliFMDReconstructor& other) +{ + // Assignment operator + fMult = other.fMult; + fNMult = other.fNMult; + fTreeR = other.fTreeR; + fCurrentVertex = other.fCurrentVertex; + fESDObj = other.fESDObj; + fNoiseFactor = other.fNoiseFactor; + fAngleCorrect = other.fAngleCorrect; + fVertexType = other.fVertexType; + fESD = other.fESD; + fDiagnostics = other.fDiagnostics; + fDiagStep1 = other.fDiagStep1; + fDiagStep2 = other.fDiagStep2; + fDiagStep3 = other.fDiagStep3; + fDiagStep4 = other.fDiagStep4; + fDiagAll = other.fDiagAll; + return *this; +} -#ifdef DEBUG - Info("Exec ","Start"); -#endif +//____________________________________________________________________ +AliFMDReconstructor::~AliFMDReconstructor() +{ + // Destructor + if (fMult) fMult->Delete(); + if (fMult) delete fMult; + if (fESDObj) delete fESDObj; +} - Int_t const knumVolumes=5; - Int_t padADC; - Float_t eta, etain,etaout,rad,theta; - Int_t ivol, iSector, iRing; - Float_t rin[5]={4.2,15.4,4.2,15.4,4.2}; - Float_t rout[5]={17.4,28.4,17.4,28.4,17.4}; - Float_t z[5]={-62.8, -75.2, 83.4, 75.2, 340.}; - Int_t numberOfRings[5]={512,256,512,256,512}; - Int_t numberOfSectors[5]= {20,40,20,40,20}; - Int_t numberOfEtaIntervals[5]; - // number of ring for boundary 0.1 eta +//____________________________________________________________________ +void +AliFMDReconstructor::Init() +{ + // Initialize the reconstructor + // Initialize the geometry + AliFMDGeometry* geom = AliFMDGeometry::Instance(); + geom->Init(); + geom->InitTransformations(); + + // Initialize the parameters + AliFMDParameters* param = AliFMDParameters::Instance(); + param->Init(); - if (runLoader == 0x0) - { - Error("Exec","Run Loader loader is NULL - Session not opened"); - return; - } - - AliLoader* plFMD = runLoader->GetLoader("FMDLoader"); - if (plFMD == 0x0) - { - Fatal("AliFMDReconstructor","Can not find FMD (loader) in specified event"); - return;//never reached - } - - if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); - if (!runLoader->TreeE()) runLoader->LoadHeader(); - - TDirectory* cwd = gDirectory; - gDirectory = 0x0; - Text_t buf1[20]; - TH2F* hTotal[10]; - for (Int_t j=1; j<=5; j++){ - sprintf(buf1,"hTotal%d",j); + // Current vertex position + fCurrentVertex = 0; + // Create array of reconstructed strip multiplicities + fMult = new TClonesArray("AliFMDRecPoint", 51200); + // Create ESD output object + fESDObj = new AliESDFMD; + + // Check if we need diagnostics histograms + if (!fDiagnostics) return; + AliInfo("Making diagnostics histograms"); + fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC", + 1024, -.5, 1023.5, 1024, -.5, 1023.5); + fDiagStep1->SetDirectory(0); + fDiagStep1->GetXaxis()->SetTitle("ADC (read)"); + fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)", + fNoiseFactor)); + fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced", + 1024, -.5, 1023.5, 100, 0, 2); + fDiagStep2->SetDirectory(0); + fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)"); + fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]"); + fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected", + 100, 0., 2., 100, 0., 2.); + fDiagStep3->SetDirectory(0); + fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]"); + fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); + fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced", + 100, 0., 2., 100, -.1, 19.9); + fDiagStep4->SetDirectory(0); + fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); + fDiagStep4->GetYaxis()->SetTitle("Multiplicity"); + fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced", + 1024, -.5, 1023.5, 100, -.1, 19.9); + fDiagAll->SetDirectory(0); + fDiagAll->GetXaxis()->SetTitle("ADC (read)"); + fDiagAll->GetYaxis()->SetTitle("Multiplicity"); +} + +//____________________________________________________________________ +void +AliFMDReconstructor::ConvertDigits(AliRawReader* reader, + TTree* digitsTree) const +{ + // Convert Raw digits to AliFMDDigit's in a tree + AliFMDDebug(2, ("Reading raw data into digits tree")); + AliFMDRawReader rawRead(reader, digitsTree); + // rawRead.SetSampleRate(fFMD->GetSampleRate()); + rawRead.Exec(); + AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); + for (size_t i = 1; i <= 3; i++) { + fZS[i] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); + fZSFactor[i] = rawRead.NoiseFactor(map->Detector2DDL(i)); + } +} + +//____________________________________________________________________ +void +AliFMDReconstructor::GetVertex() const +{ + // Return the vertex to use. + // This is obtained from the ESD object. + // If not found, a warning is issued. + fVertexType = kNoVertex; + fCurrentVertex = 0; + if (fESD) { + const AliESDVertex* vertex = fESD->GetPrimaryVertex(); + if (!vertex) vertex = fESD->GetPrimaryVertexSPD(); + if (!vertex) vertex = fESD->GetPrimaryVertexTPC(); + if (!vertex) vertex = fESD->GetVertex(); + + if (vertex) { + AliFMDDebug(2, ("Got %s (%s) from ESD: %f", + vertex->GetName(), vertex->GetTitle(), vertex->GetZv())); + fCurrentVertex = vertex->GetZv(); + fVertexType = kESDVertex; + return; + } + else if (fESD->GetESDTZERO()) { + AliFMDDebug(2, ("Got primary vertex from T0: %f", fESD->GetT0zVertex())); + fCurrentVertex = fESD->GetT0zVertex(); + fVertexType = kESDVertex; + return; + } + } + AliWarning("Didn't get any vertex from ESD or generator"); +} + + +//____________________________________________________________________ +void +AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const +{ + // Reconstruct directly from raw data (no intermediate output on + // digit tree or rec point tree). + // + // Parameters: + // reader Raw event reader + // ctree Not used. + AliFMDRawReader rawReader(reader, 0); + + UShort_t det, sec, str, fac; + Short_t adc, oldDet = -1; + Bool_t zs; + Char_t rng; - hTotal[j] = new TH2F(buf1," Number of primary particles ", - numberOfSectors[j-1],1,numberOfSectors[j-1], - numberOfRings[j-1],1,numberOfRings[j-1]); - } - gDirectory = cwd; - - plFMD->LoadRecPoints("RECREATE"); - Int_t retval=0; - Int_t nevents=Int_t (runLoader->TreeE()->GetEntries()); -#ifdef DEBUG - cout<<" nevents "<GetEvent(ievent) ; - //event z-vertex for correction eta-rad dependence - AliHeader *header = runLoader->GetHeader(); - AliGenEventHeader* genHeader = header->GenEventHeader(); - TArrayF *o = new TArrayF(3); - if (genHeader) genHeader->PrimaryVertex(*o); - Float_t zVertex=o->At(2); - - for (Int_t i=0; i<5; i++) - hTotal[i+1]->Reset(); - - retval = plFMD->LoadDigits("READ"); - if (retval) - { - Error("Exec","Error occured while loading digits. Exiting."); - return; - } - - AliFMD * fFMD = (AliFMD *)gAlice->GetDetector("FMD"); - TClonesArray *fReconParticles=fFMD->ReconParticles(); - TClonesArray *fDigits=fFMD->Digits(); + while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) { + if (det != oldDet) { + fZS[det-1] = zs; + fZSFactor[det-1] = fac; + oldDet = det; + } + ProcessSignal(det, rng, sec, str, adc); + } +} + +//____________________________________________________________________ +void +AliFMDReconstructor::Reconstruct(TTree* digitsTree, + TTree* clusterTree) const +{ + // Reconstruct event from digits in tree + // Get the FMD branch holding the digits. + // FIXME: The vertex may not be known yet, so we may have to move + // some of this to FillESD. + // + // Parameters: + // digitsTree Pointer to a tree containing digits + // clusterTree Pointer to output tree + // + AliFMDDebug(2, ("Reconstructing from digits in a tree")); + GetVertex(); + + TBranch *digitBranch = digitsTree->GetBranch("FMD"); + if (!digitBranch) { + Error("Exec", "No digit branch for the FMD found"); + return; + } + TClonesArray* digits = new TClonesArray("AliFMDDigit"); + digitBranch->SetAddress(&digits); + + if (fMult) fMult->Clear(); + if (fESDObj) fESDObj->Clear(); + + fNMult = 0; + fTreeR = clusterTree; + fTreeR->Branch("FMD", &fMult); + + AliFMDDebug(5, ("Getting entry 0 from digit branch")); + digitBranch->GetEntry(0); + + AliFMDDebug(5, ("Processing digits")); + ProcessDigits(digits); + + Int_t written = clusterTree->Fill(); + AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); + digits->Delete(); + delete digits; +} - TTree* treeD = plFMD->TreeD(); - if (treeD == 0x0) - { - Error("Exec","Can not get Tree with Digits. Nothing to reconstruct - Exiting"); - return; - } - - TBranch *brDigits=0; - - brDigits=treeD->GetBranch("FMD"); - - if (brDigits) { - brDigits->SetAddress(&fDigits); - }else{ - cerr<<"EXEC Branch FMD digits not found"<TreeR()==0) plFMD->MakeTree("R"); - - //Make branches - fFMD->MakeBranch("R"); - - Int_t zeroADC=6; - // read Digits - AliFMDdigit *fmdDigit; - if (fFMD) - { - plFMD->TreeD()->GetEvent(0); - - Int_t nDigits=fDigits->GetEntries(); - Int_t recParticles[6]; - Int_t nRecPart=0 ; - Int_t zeroPads=0; - Int_t numberOfPads=0; - Int_t pedestal; - Float_t channelWidth=(22400*50)/1024; - for (Int_t digit=0;digitUncheckedAt(digit); - ivol=fmdDigit->Volume(); - iSector=fmdDigit->NumberOfSector(); - iRing=fmdDigit->NumberOfRing(); - pedestal=Int_t(gRandom->Gaus(500,250)); - padADC= fmdDigit->ADCsignal() - -Int_t(Float_t(pedestal)/channelWidth); - if (padADC<0) padADC=0; - hTotal[ivol]->Fill(iSector,iRing,padADC); - } //digit loop - - //reconstruct multiplicity in 0.1 eta according Poisson distribution - - Int_t rmin=0; Int_t rmax=0; - Int_t smin=0; Int_t smax=0; - for (ivol=0; ivolGetBinContent(isector+1,iring+1) - TreeR()->Reset(); - plFMD->TreeR()->Fill(); - plFMD->WriteRecPoints("OVERWRITE"); - plFMD->UnloadDigits(); - } //event loop - plFMD->UnloadRecPoints(); -#ifdef DEBUG - Info(" Exec"," finished"); +//____________________________________________________________________ +void +AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const +{ + // For each digit, find the pseudo rapdity, azimuthal angle, and + // number of corrected ADC counts, and pass it on to the algorithms + // used. + // + // Parameters: + // digits Array of digits + // + Int_t nDigits = digits->GetEntries(); + AliFMDDebug(1, ("Got %d digits", nDigits)); + fESDObj->SetNoiseFactor(fNoiseFactor); + fESDObj->SetAngleCorrected(fAngleCorrect); + for (Int_t i = 0; i < nDigits; i++) { + AliFMDDigit* digit = static_cast(digits->At(i)); + if (!digit) continue; + ProcessDigit(digit); + } +} + +//____________________________________________________________________ +void +AliFMDReconstructor::ProcessDigit(AliFMDDigit* digit) const +{ + UShort_t det = digit->Detector(); + Char_t rng = digit->Ring(); + UShort_t sec = digit->Sector(); + UShort_t str = digit->Strip(); + Short_t adc = digit->Counts(); + + ProcessSignal(det, rng, sec, str, adc); +} + +//____________________________________________________________________ +void +AliFMDReconstructor::ProcessSignal(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + Short_t adc) const +{ + // Process the signal from a single strip + // + // Parameters: + // det Detector ID + // rng Ring ID + // sec Sector ID + // rng Strip ID + // adc ADC counts + // + AliFMDParameters* param = AliFMDParameters::Instance(); + // Check that the strip is not marked as dead + if (param->IsDead(det, rng, sec, str)) { + AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); + return; + } + + // digit->Print(); + // Get eta and phi + Float_t eta, phi; + PhysicalCoordinates(det, rng, sec, str, eta, phi); + + // Substract pedestal. + UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); + if(counts == USHRT_MAX) return; + + // Gain match digits. + Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts); + // Get rid of nonsense energy + if(edep < 0) return; + + // Make rough multiplicity + Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep); + // Get rid of nonsense mult + if (mult < 0) return; + AliFMDDebug(5, ("FMD%d%c[%2d,%3d]: " + "ADC: %d, Counts: %d, Energy: %f, Mult: %f", + det, rng, sec, str, adc, counts, edep, mult)); + + // Create a `RecPoint' on the output branch. + if (fMult) { + AliFMDRecPoint* m = + new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str, + eta, phi, edep, mult); + (void)m; // Suppress warnings about unused variables. + fNMult++; + } + + fESDObj->SetMultiplicity(det, rng, sec, str, mult); + fESDObj->SetEta(det, rng, sec, str, eta); + + if (fDiagAll) fDiagAll->Fill(adc, mult); + +} + + + +//____________________________________________________________________ +UShort_t +AliFMDReconstructor::SubtractPedestal(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + Short_t adc) const +{ + // Member function to subtract the pedestal from a digit + // + // Parameters: + // det Detector ID + // rng Ring ID + // sec Sector ID + // rng Strip ID + // adc # of ADC counts + // Return: + // Pedestal subtracted signal or USHRT_MAX in case of problems + // + AliFMDParameters* param = AliFMDParameters::Instance(); + Bool_t zs = fZS[det-1]; + UShort_t fac = fZSFactor[det-1]; + Float_t ped = (zs ? 0 : + param->GetPedestal(det, rng, sec, str)); + Float_t noise = param->GetPedestalWidth(det, rng, sec, str); + if(ped < 0 || noise < 0) { + AliWarning(Form("Invalid pedestal (%f) or noise (%f) " + "for FMD%d%c[%02d,%03d]", ped, noise, det, rng, sec, str)); + return USHRT_MAX; + } + + AliFMDDebug(5, ("Subtracting pedestal %f from signal %d", ped, adc)); + // if (digit->Count3() > 0) adc = digit->Count3(); + // else if (digit->Count2() > 0) adc = digit->Count2(); + // else adc = digit->Count1(); + Int_t counts = adc + Int_t(zs ? fac * noise : - ped); + counts = TMath::Max(Int_t(counts), 0); + if (counts < noise * fNoiseFactor) counts = 0; + if (counts > 0) AliFMDDebug(15, ("Got a hit strip")); + if (fDiagStep1) fDiagStep1->Fill(adc, counts); + + return UShort_t(counts); +} + +//____________________________________________________________________ +Float_t +AliFMDReconstructor::Adc2Energy(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + Float_t eta, + UShort_t count) const +{ + // Converts number of ADC counts to energy deposited. + // Note, that this member function can be overloaded by derived + // classes to do strip-specific look-ups in databases or the like, + // to find the proper gain for a strip. + // + // In the first simple version, we calculate the energy deposited as + // + // EnergyDeposited = cos(theta) * gain * count + // + // where + // + // Pre_amp_MIP_Range + // gain = ----------------- * Energy_deposited_per_MIP + // ADC_channel_size + // + // is constant and the same for all strips. + // + // For the production we use the conversion measured in the NBI lab. + // The total conversion is then: + // + // gain = ADC / DAC + // + // EdepMip * count + // => energy = ---------------- + // gain * DACPerADC + // + // Parameters: + // det Detector ID + // rng Ring ID + // sec Sector ID + // rng Strip ID + // eta Psuedo-rapidity + // counts Number of ADC counts over pedestal + // Return + // The energy deposited in a single strip, or -1 in case of problems + // + if (count <= 0) return 0; + AliFMDParameters* param = AliFMDParameters::Instance(); + Float_t gain = param->GetPulseGain(det, rng, sec, str); + // 'Tagging' bad gains as bad energy + if (gain < 0) { + AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]", + gain, det, rng, sec, str)); + return -1; + } + AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)", + count, gain,param->GetDACPerMIP())); + + Double_t edep = ((count * param->GetEdepMip()) + / (gain * param->GetDACPerMIP())); + if (fDiagStep2) fDiagStep2->Fill(count, edep); + if (fAngleCorrect) { + Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); + Double_t corr = TMath::Abs(TMath::Cos(theta)); + Double_t cedep = corr * edep; + AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", + edep, corr, cedep, eta, theta)); + if (fDiagStep3) fDiagStep3->Fill(edep, cedep); + edep = cedep; + } + return edep; +} + +//____________________________________________________________________ +Float_t +AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/, + Char_t /*rng*/, + UShort_t /*sec*/, + UShort_t /*str*/, + Float_t edep) const +{ + // Converts an energy signal to number of particles. + // Note, that this member function can be overloaded by derived + // classes to do strip-specific look-ups in databases or the like, + // to find the proper gain for a strip. + // + // In this simple version, we calculate the multiplicity as + // + // multiplicity = Energy_deposited / Energy_deposited_per_MIP + // + // where + // + // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness + // + // is constant and the same for all strips + // + // Parameters: + // det Detector ID + // rng Ring ID + // sec Sector ID + // rng Strip ID + // edep Energy deposited in a single strip + // Return + // The "bare" multiplicity corresponding to the energy deposited + AliFMDParameters* param = AliFMDParameters::Instance(); + Double_t edepMIP = param->GetEdepMip(); + Float_t mult = edep / edepMIP; +#if 0 + if (edep > 0) + AliFMDDebug(15, ("Translating energy %f to multiplicity via " + "divider %f->%f", edep, edepMIP, mult)); #endif - // delete hTotal[10]; + if (fDiagStep4) fDiagStep4->Fill(edep, mult); + return mult; +} +//____________________________________________________________________ +void +AliFMDReconstructor::PhysicalCoordinates(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + Float_t& eta, + Float_t& phi) const +{ + // Get the eta and phi of a digit + // + // Parameters: + // det Detector ID + // rng Ring ID + // sec Sector ID + // rng Strip ID + // eta On return, contains the psuedo-rapidity of the strip + // phi On return, contains the azimuthal angle of the strip + // + AliFMDGeometry* geom = AliFMDGeometry::Instance(); + Double_t x, y, z, r, theta; + geom->Detector2XYZ(det, rng, sec, str, x, y, z); + // Correct for vertex offset. + z += fCurrentVertex; + phi = TMath::ATan2(y, x); + r = TMath::Sqrt(y * y + x * x); + theta = TMath::ATan2(r, z); + eta = -TMath::Log(TMath::Tan(theta / 2)); } + -//_____________________________________________________________________________ -void AliFMDReconstructor::FillESD(AliRunLoader* /*runLoader*/, - AliESD* /*esd*/) const +//____________________________________________________________________ +void +AliFMDReconstructor::FillESD(TTree* /* digitsTree */, + TTree* /* clusterTree */, + AliESDEvent* esd) const { -// nothing to be done + // nothing to be done + // FIXME: The vertex may not be known when Reconstruct is executed, + // so we may have to move some of that member function here. + AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); + // fESDObj->Print(); + + Double_t oldVz = fCurrentVertex; + GetVertex(); + if (fVertexType != kNoVertex) { + AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)", + fCurrentVertex, oldVz)); + AliFMDESDRevertexer revertexer; + revertexer.Revertex(fESDObj, fCurrentVertex); + } + if (esd) { + AliFMDDebug(2, ("Writing FMD data to ESD tree")); + esd->SetFMDData(fESDObj); + } + + if (!fDiagnostics || !esd) return; + static bool first = true; + // This is most likely NOT the event number you'd like to use. It + // has nothing to do with the 'real' event number. + // - That's OK. We just use it for the name of the directory - + // nothing else. Christian + Int_t evno = esd->GetEventNumberInFile(); + AliFMDDebug(1, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); + TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); + first = false; + f.cd(); + TDirectory* d = f.mkdir(Form("%03d", evno), + Form("Diagnostics histograms for event # %d", evno)); + d->cd(); + if (fDiagStep1) fDiagStep1->Write(); + if (fDiagStep2) fDiagStep2->Write(); + if (fDiagStep3) fDiagStep3->Write(); + if (fDiagStep4) fDiagStep4->Write(); + if (fDiagAll) fDiagAll->Write(); + d->Write(); + f.Write(); + f.Close(); + + if (fDiagStep1) fDiagStep1->Reset(); + if (fDiagStep2) fDiagStep2->Reset(); + if (fDiagStep3) fDiagStep3->Reset(); + if (fDiagStep4) fDiagStep4->Reset(); + if (fDiagAll) fDiagAll->Reset(); +} + +//____________________________________________________________________ +void +AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, + AliESDEvent* esd) const +{ + TTree* dummy = 0; + FillESD(dummy, clusterTree, esd); } +//____________________________________________________________________ +// +// EOF +//