X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=FMD%2FAliFMDReconstructor.cxx;h=3befa0df25f789ae22ab5c9d023bba3f4e35c6c5;hb=00d00f589a06592be25f063e8872b7e23b602b27;hp=5302ce9492288b44a12f5bf22bb857c96d2ff69e;hpb=925e65709851bc55cacc40068515d4c5a80fc419;p=u%2Fmrichter%2FAliRoot.git diff --git a/FMD/AliFMDReconstructor.cxx b/FMD/AliFMDReconstructor.cxx index 5302ce94922..3befa0df25f 100644 --- a/FMD/AliFMDReconstructor.cxx +++ b/FMD/AliFMDReconstructor.cxx @@ -12,436 +12,877 @@ * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ - /* $Id$ */ - +/** @file AliFMDReconstructor.cxx + @author Christian Holm Christensen + @date Mon Mar 27 12:47:09 2006 + @brief FMD reconstruction +*/ //____________________________________________________________________ // -// This is a class that constructs AliFMDMult (reconstructed -// multiplicity) from of Digits -// -// This class reads either digits from a TClonesArray or raw data from +// 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). -// -// From the cached values it then calculates the number of particles -// that hit a region of the FMDs, as specified by the user. -// -// The reconstruction can be done in two ways: Either via counting the -// number of empty strips (Poisson method), or by converting the ADC -// signal to an energy deposition, and then dividing by the typical -// energy loss of a particle. -// -// +---------------------+ +---------------------+ -// | AliFMDReconstructor |<>-----| AliFMDMultAlgorithm | -// +---------------------+ +---------------------+ -// ^ -// | -// +-----------+---------+ -// | | -// +-------------------+ +------------------+ -// | AliFMDMultPoisson | | AliFMDMultNaiive | -// +-------------------+ +------------------+ -// -// AliFMDReconstructor acts as a manager class. It contains a list of -// AliFMDMultAlgorithm objects. The call graph looks something like +// internal cache (fAdcs). The rec-points are made via the naiive +// method. // -// -// +----------------------+ +----------------------+ -// | :AliFMDReconstructor | | :AliFMDMultAlgorithm | -// +----------------------+ +----------------------+ -// | | -// Reconstruct +-+ | -// ------------>| | PreRun +-+ -// | |------------------------------->| | -// | | +-+ -// | |-----+ (for each event) | -// | | | *ProcessEvent | -// |+-+ | | -// || |<---+ PreEvent +-+ -// || |------------------------------>| | -// || | +-+ -// || |-----+ | -// || | | ProcessDigits | -// ||+-+ | | -// ||| |<---+ | -// ||| | *ProcessDigit(digit) +-+ -// ||| |----------------------------->| | -// ||| | +-+ -// ||+-+ | -// || | PostEvent +-+ -// || |------------------------------>| | -// || | +-+ -// |+-+ | -// | | PostRun +-+ -// | |------------------------------->| | -// | | +-+ -// +-+ | -// | | -// -// -// //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia // Latest changes by Christian Holm Christensen // // //____________________________________________________________________ -#include // ALILOG_H -#include // ALIRUN_H -#include // ALIRUNLOADER_H -#include // ALILOADER_H -#include // ALIHEADER_H -#include // ALIRAWREADER_H -#include // ALIGENEVENTHEADER_H -#include "AliFMD.h" // ALIFMD_H +// #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 "AliFMDSDigit.h" // ALIFMDDIGIT_H #include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H -#include "AliFMDRawStream.h" // ALIFMDRAWSTREAM_H +#include "AliFMDRecoParam.h" // ALIFMDRECOPARAM_H #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H -#include "AliFMDMultAlgorithm.h" // ALIFMDMULTALGORITHM_H -#include "AliFMDMultPoisson.h" // ALIFMDMULTPOISSON_H -#include "AliFMDMultNaiive.h" // ALIFMDMULTNAIIVE_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 +#include "AliFMDESDRevertexer.h" + + +class AliRawReader; //____________________________________________________________________ ClassImp(AliFMDReconstructor) +#if 0 + ; // This is here to keep Emacs for indenting the next line +#endif //____________________________________________________________________ AliFMDReconstructor::AliFMDReconstructor() : AliReconstructor(), - fPedestal(0), - fPedestalWidth(0), - fPedestalFactor(0) + fMult(0x0), + fNMult(0), + fTreeR(0x0), + fCurrentVertex(0), + fESDObj(0x0), + fNoiseFactor(0), + fAngleCorrect(kTRUE), + fVertexType(kNoVertex), + fESD(0x0), + fDiagnostics(kFALSE), + fDiagStep1(0), + fDiagStep2(0), + fDiagStep3(0), + fDiagStep4(0), + fDiagAll(0) { - // Make a new FMD reconstructor object - default CTOR. - SetPedestal(); - - fFMDLoader = 0; - fRunLoader = 0; - fFMD = 0; - fAlgorithms.Add(new AliFMDMultNaiive); - fAlgorithms.Add(new AliFMDMultPoisson); + // Make a new FMD reconstructor object - default CTOR. + SetNoiseFactor(); + SetAngleCorrect(); + if (AliDebugLevel() > 0) fDiagnostics = kTRUE; + for(Int_t det = 1; det<=3; det++) { + fZS[det-1] = kFALSE; + fZSFactor[det-1] = 0; + } } - //____________________________________________________________________ -AliFMDReconstructor::AliFMDReconstructor(const AliFMDReconstructor& other) - : AliReconstructor(), - fPedestal(0), - fPedestalWidth(0), - fPedestalFactor(0) +AliFMDReconstructor::~AliFMDReconstructor() { - // Copy constructor - SetPedestal(other.fPedestal, other.fPedestalWidth, other.fPedestalFactor); + // Destructor + if (fMult) fMult->Delete(); + if (fMult) delete fMult; + if (fESDObj) delete fESDObj; +} - fFMDLoader = other.fFMDLoader; - fRunLoader = other.fRunLoader; - fFMD = other.fFMD; +//____________________________________________________________________ +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(); - fAlgorithms.Delete(); - TIter next(&(other.fAlgorithms)); - AliFMDMultAlgorithm* algorithm = 0; - while ((algorithm = static_cast(next()))) - fAlgorithms.Add(algorithm); - fAlgorithms.SetOwner(kFALSE); -} + // 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"); +} //____________________________________________________________________ -AliFMDReconstructor& -AliFMDReconstructor::operator=(const AliFMDReconstructor& other) +void +AliFMDReconstructor::ConvertDigits(AliRawReader* reader, + TTree* digitsTree) const { - // Assignment operator - SetPedestal(other.fPedestal, other.fPedestalWidth, other.fPedestalFactor); - - fFMDLoader = other.fFMDLoader; - fRunLoader = other.fRunLoader; - fFMD = other.fFMD; + // Convert Raw digits to AliFMDDigit's in a tree + AliFMDDebug(1, ("Reading raw data into digits tree")); + if (!digitsTree) { + AliError("No digits tree passed"); + return; + } + static TClonesArray* array = new TClonesArray("AliFMDDigit"); + digitsTree->Branch("FMD", &array); + + AliFMDRawReader rawRead(reader, digitsTree); + // rawRead.SetSampleRate(fFMD->GetSampleRate()); + // rawRead.Exec(); + rawRead.ReadAdcs(array); - fAlgorithms.Delete(); - TIter next(&(other.fAlgorithms)); - AliFMDMultAlgorithm* algorithm = 0; - while ((algorithm = static_cast(next()))) - fAlgorithms.Add(algorithm); - fAlgorithms.SetOwner(kFALSE); + Int_t nWrite = digitsTree->Fill(); + AliFMDDebug(1, ("Got a grand total of %d digits, wrote %d bytes to tree", + array->GetEntriesFast(), nWrite)); - return *this; + + AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); + for (size_t i = 1; i <= 3; i++) { + fZS[i-1] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); + fZSFactor[i-1] = rawRead.NoiseFactor(map->Detector2DDL(i)); + } } //____________________________________________________________________ -AliFMDReconstructor::~AliFMDReconstructor() +void +AliFMDReconstructor::GetVertex(AliESDEvent* esd) const { - // Destructor - fAlgorithms.Delete(); + // Return the vertex to use. + // This is obtained from the ESD object. + // If not found, a warning is issued. + fVertexType = kNoVertex; + fCurrentVertex = 0; + if (!esd) return; + + const AliESDVertex* vertex = esd->GetPrimaryVertex(); + if (!vertex) vertex = esd->GetPrimaryVertexSPD(); + if (!vertex) vertex = esd->GetPrimaryVertexTPC(); + if (!vertex) vertex = esd->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 (esd->GetESDTZERO()) { + AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex())); + fCurrentVertex = esd->GetT0zVertex(); + fVertexType = kESDVertex; + return; + } + AliWarning("Didn't get any vertex from ESD or generator"); } //____________________________________________________________________ -void -AliFMDReconstructor::SetPedestal(Float_t mean, Float_t width, Float_t factor) +Int_t +AliFMDReconstructor::GetIdentifier() const { - // Set the pedestal, and pedestal width - fPedestal = mean; - fPedestalWidth = width; - fPedestalFactor = factor; + return AliReconstruction::GetDetIndex(GetDetectorName()); +} + +//____________________________________________________________________ +const AliFMDRecoParam* +AliFMDReconstructor::GetParameters() const +{ + Int_t iDet = 12; // GetIdentifier(); + const AliDetectorRecoParam* params = AliReconstructor::GetRecoParam(iDet); + if (!params || params->IsA() != AliFMDRecoParam::Class()) return 0; + return static_cast(params); } //____________________________________________________________________ void -AliFMDReconstructor::Reconstruct(AliRunLoader* runLoader, - AliRawReader* rawReader) 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 determined by numberOfVolume, - // numberOfMinSector, numberOfMaxSector, numberOfMinRing, - // numberOgMaxRing - // - // The reconstruction method is choosen based on the number of empty - // strips. - if (!runLoader) { - Error("Exec","Run Loader loader is NULL - Session not opened"); +AliFMDReconstructor::UseRecoParam(Bool_t set) const +{ + static Float_t savedNoiseFactor = fNoiseFactor; + static Bool_t savedAngleCorrect = fAngleCorrect; + if (set) { + const AliFMDRecoParam* params = GetParameters(); + if (params) { + fNoiseFactor = params->NoiseFactor(); + fAngleCorrect = params->AngleCorrect(); + } return; } - fRunLoader = runLoader; - fFMDLoader = runLoader->GetLoader("FMDLoader"); - if (!fFMDLoader) - Fatal("AliFMDReconstructor","Can not find FMD (loader) " - "in specified event"); - - // Get the AliRun object - if (!fRunLoader->GetAliRun()) fRunLoader->LoadgAlice(); + fNoiseFactor = savedNoiseFactor; + fAngleCorrect = savedAngleCorrect; +} - // Get the AliFMD object - fFMD = static_cast(fRunLoader->GetAliRun()->GetDetector("FMD")); - if (!fFMD) { - AliError("Can not get FMD from gAlice"); - return; + +//____________________________________________________________________ +void +AliFMDReconstructor::MarkDeadChannels(AliESDFMD* esd) const +{ + // Loop over all entries of the ESD and mark + // those that are dead as such + // - otherwise put in the zero signal. + AliFMDParameters* param = AliFMDParameters::Instance(); + + for (UShort_t d = 1; d <= 3; d++) { + UShort_t nR = (d == 1 ? 1 : 2); + + for (UShort_t q = 0; q < nR; q++) { + Char_t r = (q == 0 ? 'I' : 'O'); + UShort_t nS = (q == 0 ? 20 : 40); + UShort_t nT = (q == 0 ? 512 : 256); + + for (UShort_t s = 0; s < nS; s++) { + for (UShort_t t = 0; t < nT; t++) { + if (param->IsDead(d, r, s, t)) + esd->SetMultiplicity(d, r, s, t, AliESDFMD::kInvalidMult); + else if (esd->Multiplicity(d, r, s, t) == AliESDFMD::kInvalidMult) + esd->SetMultiplicity(d, r, s, t, 0); + } + } + } } - fFMDLoader->LoadRecPoints("RECREATE"); - - if (!fRunLoader->TreeE()) fRunLoader->LoadHeader(); +} - TIter next(&fAlgorithms); - AliFMDMultAlgorithm* algorithm = 0; - while ((algorithm = static_cast(next()))) - algorithm->PreRun(fFMD); +//____________________________________________________________________ +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 - 'cluster tree' to store rec-points in. + AliFMDDebug(1, ("Reconstructing from raw reader")); + AliFMDRawReader rawReader(reader, 0); + + UShort_t det, sec, str, fac; + Short_t adc, oldDet = -1; + Bool_t zs; + Char_t rng; + + UseRecoParam(kTRUE); + 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); + } + UseRecoParam(kFALSE); + +} - if (rawReader) { - Int_t event = 0; - while (rawReader->NextEvent()) { - ProcessEvent(event, rawReader); - event++; +//____________________________________________________________________ +void +AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) 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, sam, rat, fac; + Short_t adc, oldDet = -1; + Bool_t zs; + Char_t rng; + + UseRecoParam(kTRUE); + while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) { + if (!rawReader.SelectSample(sam, rat)) continue; + if (det != oldDet) { + fZS[det-1] = zs; + fZSFactor[det-1] = fac; + oldDet = det; } + DigitizeSignal(sdigits, det, rng, sec, str, sam, adc); } - else { - Int_t nEvents= Int_t(fRunLoader->TreeE()->GetEntries()); - for(Int_t event = 0; event < nEvents; event++) - ProcessEvent(event, 0); + UseRecoParam(kFALSE); +} + +//____________________________________________________________________ +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 + // + if (!fMult) fMult = new TClonesArray("AliFMDRecPoint"); + + AliFMDDebug(1, ("Reconstructing from digits in a tree")); + GetVertex(fESD); + + + + static TClonesArray* digits = new TClonesArray("AliFMDDigit"); + TBranch* digitBranch = digitsTree->GetBranch("FMD"); + if (!digitBranch) { + Error("Exec", "No digit branch for the FMD found"); + return; } + digitBranch->SetAddress(&digits); - next.Reset(); - algorithm = 0; - while ((algorithm = static_cast(next()))) - algorithm->PostRun(); + if (digits) digits->Clear(); + 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")); + UseRecoParam(kTRUE); + ProcessDigits(digits); + UseRecoParam(kFALSE); - fFMDLoader->UnloadRecPoints(); - fFMDLoader = 0; - fRunLoader = 0; - fFMD = 0; + Int_t written = clusterTree->Fill(); + AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); + // digits->Delete(); + // delete digits; } + //____________________________________________________________________ -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 determined by numberOfVolume, - // numberOfMinSector, numberOfMaxSector, numberOfMinRing, - // numberOgMaxRing - // - // The reconstruction method is choosen based on the number of empty - // strips. - Reconstruct(runLoader, 0); +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(2, ("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::ProcessEvent(Int_t event, - AliRawReader* reader) const +void +AliFMDReconstructor::ProcessSignal(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + Short_t adc) const { - // Process one event read from either a clones array or from a a raw - // data reader. - fRunLoader->GetEvent(event) ; - //event z-vertex for correction eta-rad dependence - AliHeader *header = fRunLoader->GetHeader(); - if (!header) Warning("ProcessEvent", "no AliHeader found!"); - AliGenEventHeader* genHeader = (header ? header->GenEventHeader() : 0); - - // Get the Z--coordinate from the event header - TArrayF o(3); - if (genHeader) genHeader->PrimaryVertex(o); - else Warning("ProcessEvent", "No GenEventHeader Found"); - fCurrentVertex = o.At(2); - - // If the recontruction tree isn't loaded, load it - if(fFMDLoader->TreeR()==0) fFMDLoader->MakeTree("R"); - - // Load or recreate the digits - if (fFMDLoader->LoadDigits((reader ? "UPDATE" : "READ"))) { - if (!reader) { - Error("Exec","Error occured while loading digits. Exiting."); - return; - } + // 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(1, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); + return; } - // Get the digits tree - TTree* digitTree = fFMDLoader->TreeD(); - if (!digitTree) { - if (!reader) { - Error("Exec","Can not get Tree with Digits. " - "Nothing to reconstruct - Exiting"); - return; - } - fFMDLoader->MakeTree("D"); - digitTree = fFMDLoader->TreeD(); + + // 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 > 20) { + // AliWarning(Form("The mutliplicity in FMD%d%c[%2d,%3d]=%f > 20 " + // "(ADC: %d, Energy: %f)", det, rng, sec, str, mult, + // counts, edep)); + // } + if (mult < 0) return; + AliFMDDebug(10, ("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++; } - // Get the FMD branch holding the digits. - TBranch *digitBranch = digitTree->GetBranch("FMD"); - TClonesArray* digits = fFMD->Digits(); - if (!digitBranch) { - if (!reader) { - Error("Exec", "No digit branch for the FMD found"); - return; - } - fFMD->MakeBranchInTree(digitTree, fFMD->GetName(), &(digits), 4000, 0); - } - if (!reader) digitBranch->SetAddress(&digits); - - if (reader) { - AliFMDRawReader rawRead(fFMD, reader); - AliDebug(10, Form("Making raw reader with sample rate: %d", - fFMD->GetSampleRate())); - rawRead.SetSampleRate(fFMD->GetSampleRate()); - rawRead.Exec(); - } - else { - // Read the ADC values from a clones array. - AliDebug(10, "Reading ADCs from Digits array"); - // read Digits, and reconstruct the particles - if (!fFMDLoader->TreeD()->GetEvent(0)) return; - } - TIter next(&fAlgorithms); - AliFMDMultAlgorithm* algorithm = 0; - while ((algorithm = static_cast(next()))) - algorithm->PreEvent(fFMDLoader->TreeR(), fCurrentVertex); + fESDObj->SetMultiplicity(det, rng, sec, str, mult); + fESDObj->SetEta(det, rng, sec, str, eta); + + if (fDiagAll) fDiagAll->Fill(adc, mult); - ProcessDigits(digits); +} - next.Reset(); - algorithm = 0; - while ((algorithm = static_cast(next()))) - algorithm->PostEvent(); +//____________________________________________________________________ +void +AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits, + UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + UShort_t /* sam */, + 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; + } + + // Substract pedestal. + UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); + if(counts == USHRT_MAX || counts == 0) return; - if (reader) { - digitTree->Fill(); - fFMDLoader->WriteDigits("OVERWRITE"); + // Gain match digits. + Double_t edep = Adc2Energy(det, rng, sec, str, counts); + // Get rid of nonsense energy + if(edep < 0) return; + + Int_t n = sdigits->GetEntriesFast(); + // AliFMDSDigit* sdigit = + new ((*sdigits)[n]) + AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts); + // sdigit->SetCount(sam, counts); +} + +//____________________________________________________________________ +UShort_t +AliFMDReconstructor::SubtractPedestal(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + UShort_t adc, + Float_t noiseFactor, + Bool_t zsEnabled, + UShort_t zsNoiseFactor) const +{ + AliFMDParameters* param = AliFMDParameters::Instance(); + Float_t ped = (zsEnabled ? 0 : + param->GetPedestal(det, rng, sec, str)); + Float_t noise = param->GetPedestalWidth(det, rng, sec, str); + if(ped < 0 || noise < 0) { + AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) " + "for FMD%d%c[%02d,%03d]", + ped, noise, det, rng, sec, str)); + return USHRT_MAX; } - fFMDLoader->UnloadDigits(); - fFMDLoader->TreeR()->Reset(); - fFMDLoader->TreeR()->Fill(); - fFMDLoader->WriteRecPoints("OVERWRITE"); + AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d " + "(%s w/factor %d, noise factor %f, " + "pedestal %8.2f+/-%8.2f)", + det, rng, sec, str, adc, + (zsEnabled ? "zs'ed" : "straight"), + zsNoiseFactor, noiseFactor, ped, noise)); + + Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped); + counts = TMath::Max(Int_t(counts), 0); + // Calculate the noise factor for suppressing remenants of the noise + // peak. If we have done on-line zero suppression, we only check + // for noise signals that are larger than the suppressed noise. If + // the noise factor used on line is larger than the factor used + // here, we do not do this check at all. + // + // For example: + // Online factor | Read factor | Result + // ---------------+--------------+------------------------------- + // 2 | 3 | Check if signal > 1 * noise + // 3 | 3 | Check if signal > 0 + // 3 | 2 | Check if signal > 0 + // + // In this way, we make sure that we do not suppress away too much + // data, and that the read-factor is the most stringent cut. + Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0)); + if (counts < noise * nf) counts = 0; + if (counts > 0) AliDebugClass(15, "Got a hit strip"); + + UShort_t ret = counts < 0 ? 0 : counts; + return ret; } + //____________________________________________________________________ UShort_t -AliFMDReconstructor::SubtractPedestal(AliFMDDigit* digit) const +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 - // This implementation does nothing, but a derived class could over - // load this to subtract a pedestal that was given in a database or - // something like that. - - Int_t counts = 0; - Float_t ped = fPedestal + fPedestalFactor * fPedestalWidth; - if (digit->Count3() > 0) counts = digit->Count3(); - else if (digit->Count2() > 0) counts = digit->Count2(); - else counts = digit->Count1(); - counts = TMath::Max(Int_t(counts - ped), 0); - return UShort_t(counts); + // + // 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 + // + UShort_t counts = SubtractPedestal(det, rng, sec, str, adc, + fNoiseFactor, fZS[det-1], + fZSFactor[det-1]); + if (fDiagStep1) fDiagStep1->Fill(adc, counts); + + return counts; } //____________________________________________________________________ -void -AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const +Float_t +AliFMDReconstructor::Adc2Energy(UShort_t det, + Char_t rng, + UShort_t sec, + UShort_t str, + UShort_t count) const { - Int_t nDigits = digits->GetEntries(); - for (Int_t i = 0; i < nDigits; i++) { - AliFMDDigit* digit = static_cast(digits->At(i)); - AliFMDSubDetector* subDetector = 0; - switch (digit->Detector()) { - case 1: subDetector = fFMD->GetFMD1(); break; - case 2: subDetector = fFMD->GetFMD2(); break; - case 3: subDetector = fFMD->GetFMD3(); break; - } - if (!subDetector) { - Warning("ProcessDigits", "Unknown detector: FMD%d" , digit->Detector()); - continue; - } - - AliFMDRing* ring = 0; - Float_t ringZ = 0; - switch(digit->Ring()) { - case 'i': - case 'I': - ring = subDetector->GetInner(); - ringZ = subDetector->GetInnerZ(); - break; - case 'o': - case 'O': - ring = subDetector->GetOuter(); - ringZ = subDetector->GetOuterZ(); - break; - } - if (!ring) { - Warning("ProcessDigits", "Unknown ring: FMD%d%c", digit->Detector(), - digit->Ring()); - break; - } - - Float_t realZ = fCurrentVertex + ringZ; - Float_t stripR = ((ring->GetHighR() - ring->GetLowR()) - / ring->GetNStrips() * (digit->Strip() + .5) - + ring->GetLowR()); - Float_t theta = TMath::ATan2(stripR, realZ); - Float_t phi = (2 * TMath::Pi() / ring->GetNSectors() - * (digit->Sector() + .5)); - Float_t eta = -TMath::Log(TMath::Tan(theta / 2)); - UShort_t counts = SubtractPedestal(digit); - - TIter next(&fAlgorithms); - AliFMDMultAlgorithm* algorithm = 0; - while ((algorithm = static_cast(next()))) - algorithm->ProcessDigit(digit, eta, phi, counts); + // 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 + // 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())); + return edep; } + +//____________________________________________________________________ +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 + // + Double_t edep = Adc2Energy(det, rng, sec, str, count); + + 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 + 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, deta, dphi; + geom->Detector2XYZ(det, rng, sec, str, x, y, z); + + // Correct for vertex offset. + z -= fCurrentVertex; + AliFMDGeometry::XYZ2REtaPhiTheta(x, y, z, r, deta, dphi, theta); + eta = deta; + phi = dphi; +} + - + //____________________________________________________________________ void -AliFMDReconstructor::FillESD(AliRunLoader* /*fRunLoader*/, - AliESD* /*esd*/) const +AliFMDReconstructor::FillESD(TTree* /* digitsTree */, + TTree* /* clusterTree */, + AliESDEvent* esd) const { // 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(); + + // Fix up ESD so that only truely dead channels get the kInvalidMult flag. + MarkDeadChannels(fESDObj); + + Double_t oldVz = fCurrentVertex; + GetVertex(esd); + 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(3, ("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