/************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ /* $Id$ */ ////////////////////////////////////////////////////////////////////////////// // // Forward Multiplicity Detector based on Silicon wafers. This class // contains the base procedures for the Forward Multiplicity detector // Detector consists of 5 Si volumes covered pseudorapidity interval // from 1.7 to 5.1. // // This is the base class for all FMD manager classes. // // The actual code is done by various separate classes. Below is // diagram showing the relationship between the various FMD classes // that handles the geometry // // // +----------+ +----------+ // | AliFMDv1 | | AliFMDv1 | // +----------+ +----------+ // | | // +----+--------------+ // | // | +------------+ 1 +---------------+ // | +- | AliFMDRing |<>--| AliFMDPolygon | // V 2 | +------------+ +---------------+ // +--------+<>--+ | // | AliFMD | ^ // +--------+<>--+ V 1..2 // 3 | +-------------------+ // +-| AliFMDSubDetector | // +-------------------+ // ^ // | // +-------------+-------------+ // | | | // +---------+ +---------+ +---------+ // | AliFMD1 | | AliFMD2 | | AliFMD3 | // +---------+ +---------+ +---------+ // // // * AliFMD // This defines the interface for the various parts of AliROOT that // uses the FMD, like AliFMDDigitizer, AliFMDReconstructor, and so // on. // // * AliFMDv1 // This is a concrete implementation of the AliFMD interface. // It is the responsibility of this class to create the FMD // geometry, process hits in the FMD, and serve hits and digits to // the various clients. // // It uses the objects of class AliFMDSubDetector to do the various // stuff for FMD1, 2, and 3 // // * AliFMDRing // This class contains all stuff needed to do with a ring. It's // used by the AliFMDSubDetector objects to instantise inner and // outer rings. The AliFMDRing objects are shared by the // AliFMDSubDetector objects, and owned by the AliFMDv1 object. // // * AliFMDPolygon // The code I lifted from TGeoPolygon to help with the geometry of // the modules, as well as to decide wether a hit is actually with // in the real module shape. The point is, that the shape of the // various ring modules are really polygons (much like the lid of a // coffin), but it's segmented at constant radius. That is very // hard to implement using GEANT 3.21 shapes, so instead the // modules are implemented as TUBS (tube sections), and in the step // procedure we do the test whether the track was inside the real // shape of the module. // // * AliFMD1, AliFMD2, and AliFMD3 // These are specialisation of AliFMDSubDetector, that contains the // particularities of each of the sub-detector system. It is // envisioned that the classes should also define the support // volumes and material for each of the detectors. // // The responsible person for this module is Alla Maevskaia // . // // Many modifications by Christian Holm Christensen // #ifndef ROOT_TClonesArray #include #endif #ifndef ROOT_TGeomtry # include #endif #ifndef ROOT_TNode # include #endif #ifndef ROOT_TTUBE # include #endif #ifndef ROOT_TTree # include #endif #ifndef ROOT_TVirtualMC # include #endif #ifndef ROOT_TBrowser # include #endif #ifndef ROOT_TMath # include #endif #ifndef ALIRUNDIGITIZER_H # include "AliRunDigitizer.h" #endif #ifndef ALILOADER_H # include "AliLoader.h" #endif #ifndef ALIRUN_H # include "AliRun.h" #endif #ifndef ALIMC_H # include "AliMC.h" #endif #ifndef ALILOG_H # include "AliLog.h" #endif #ifndef ALIMAGF_H # include "AliMagF.h" #endif #ifndef ALIFMD_H # include "AliFMD.h" #endif #ifndef ALIFMDDIGIG_H # include "AliFMDDigit.h" #endif #ifndef ALIFMDHIT_H # include "AliFMDHit.h" #endif #ifndef ALIFMDDIGITIZER_H # include "AliFMDDigitizer.h" #endif #ifndef ALIFMD1_H # include "AliFMD1.h" #endif #ifndef ALIFMD2_H # include "AliFMD2.h" #endif #ifndef ALIFMD3_H # include "AliFMD3.h" #endif #ifndef ALIALTROBUFFER_H # include "AliAltroBuffer.h" #endif //____________________________________________________________________ ClassImp(AliFMD); //____________________________________________________________________ AliFMD::AliFMD() : fInner(0), fOuter(0), fFMD1(0), fFMD2(0), fFMD3(0), fSDigits(0), fNsdigits(0), fSiDensity(0), fPrintboardRotationId(0), fIdentityRotationId(0), fShortLegId(0), fLongLegId(0), fLegLength(0), fLegRadius(0), fModuleSpacing(0) { // // Default constructor for class AliFMD // AliDebug(0, "Default CTOR"); fHits = 0; fDigits = 0; fIshunt = 0; } //____________________________________________________________________ AliFMD::AliFMD(const char *name, const char *title, bool detailed) : AliDetector (name, title), fInner(0), fOuter(0), fFMD1(0), fFMD2(0), fFMD3(0), fSDigits(0), fNsdigits(0), fSiDensity(0), fPrintboardRotationId(0), fIdentityRotationId(0), fShortLegId(0), fLongLegId(0), fLegLength(0), fLegRadius(0), fModuleSpacing(0) { // // Standard constructor for Forward Multiplicity Detector // AliDebug(0, "Standard CTOR"); // Initialise Hit array HitsArray(); gAlice->GetMCApp()->AddHitList(fHits); // (S)Digits for the detectors disk DigitsArray(); SDigitsArray(); // CHC: What is this? fIshunt = 0; SetMarkerColor(kRed); SetLineColor(kYellow); SetSiDensity(); // Create sub-volume managers fInner = new AliFMDRing('I', detailed); fOuter = new AliFMDRing('O', detailed); fFMD1 = new AliFMD1(); fFMD2 = new AliFMD2(); fFMD3 = new AliFMD3(); // Specify parameters of sub-volume managers fFMD1->SetInner(fInner); fFMD1->SetOuter(0); fFMD2->SetInner(fInner); fFMD2->SetOuter(fOuter); fFMD3->SetInner(fInner); fFMD3->SetOuter(fOuter); SetLegLength(); SetLegRadius(); SetLegOffset(); SetModuleSpacing(); fInner->SetLowR(4.3); fInner->SetHighR(17.2); fInner->SetWaferRadius(13.4/2); fInner->SetTheta(36/2); fInner->SetNStrips(512); fInner->SetSiThickness(.03); fInner->SetPrintboardThickness(.11); fInner->SetBondingWidth(.5); fOuter->SetLowR(15.6); fOuter->SetHighR(28.0); fOuter->SetWaferRadius(13.4/2); fOuter->SetTheta(18/2); fOuter->SetNStrips( 256); fOuter->SetSiThickness(.03); fOuter->SetPrintboardThickness(.1); fOuter->SetBondingWidth(.5); fFMD1->SetHoneycombThickness(1); fFMD1->SetInnerZ(340.0); fFMD2->SetHoneycombThickness(1); fFMD2->SetInnerZ(83.4); fFMD2->SetOuterZ(75.2); fFMD3->SetHoneycombThickness(1); fFMD3->SetInnerZ(-62.8); fFMD3->SetOuterZ(-75.2); } //____________________________________________________________________ AliFMD::~AliFMD () { // Destructor for base class AliFMD if (fHits) { fHits->Delete(); delete fHits; fHits = 0; } if (fDigits) { fDigits->Delete(); delete fDigits; fDigits = 0; } if (fSDigits) { fSDigits->Delete(); delete fSDigits; fSDigits = 0; } } //==================================================================== // // GEometry ANd Traking // //____________________________________________________________________ void AliFMD::CreateGeometry() { // // Create the geometry of Forward Multiplicity Detector. The actual // construction of the geometry is delegated to the class AliFMDRing // and AliFMDSubDetector and the relevant derived classes. // // The flow of this member function is: // // FOR rings fInner and fOuter DO // AliFMDRing::Init(); // END FOR // // Set up hybrud card support (leg) volume shapes // // FOR rings fInner and fOuter DO // AliFMDRing::SetupGeometry(); // END FOR // // FOR subdetectors fFMD1, fFMD2, and fFMD3 DO // AliFMDSubDetector::SetupGeomtry(); // END FOR // // FOR subdetectors fFMD1, fFMD2, and fFMD3 DO // AliFMDSubDetector::Geomtry(); // END FOR // // DebugGuard guard("AliFMD::CreateGeometry"); AliDebug(10, "Creating geometry"); fInner->Init(); fOuter->Init(); TString name; Double_t par[3]; par[0] = fLegRadius - .1; par[1] = fLegRadius; par[2] = fLegLength / 2; name = "FSL"; fShortLegId = gMC->Gsvolu(name.Data(),"TUBE",(*fIdtmed)[kPlasticId],par,3); par[2] += fModuleSpacing / 2; name = "FLL"; fLongLegId = gMC->Gsvolu(name.Data(),"TUBE",(*fIdtmed)[kPlasticId],par,3); fInner->SetupGeometry((*fIdtmed)[kAirId], (*fIdtmed)[kSiId], (*fIdtmed)[kPcbId], fPrintboardRotationId, fIdentityRotationId); fOuter->SetupGeometry((*fIdtmed)[kAirId], (*fIdtmed)[kSiId], (*fIdtmed)[kPcbId], fPrintboardRotationId, fIdentityRotationId); fFMD1->SetupGeometry((*fIdtmed)[kAirId], (*fIdtmed)[kKaptionId]); fFMD2->SetupGeometry((*fIdtmed)[kAirId], (*fIdtmed)[kKaptionId]); fFMD3->SetupGeometry((*fIdtmed)[kAirId], (*fIdtmed)[kKaptionId]); fFMD1->Geometry("ALIC", fPrintboardRotationId, fIdentityRotationId); fFMD2->Geometry("ALIC", fPrintboardRotationId, fIdentityRotationId); fFMD3->Geometry("ALIC", fPrintboardRotationId, fIdentityRotationId); } //____________________________________________________________________ void AliFMD::CreateMaterials() { // Register various materials and tracking mediums with the // backend. // // Currently defined materials and mediums are // // FMD Air Normal air // FMD Si Active silicon of sensors // FMD Carbon Normal carbon used in support, etc. // FMD Kapton Carbon used in Honeycomb // FMD PCB Printed circuit board material // FMD Plastic Material for support legs // // Also defined are two rotation matricies. // // DebugGuard guard("AliFMD::CreateMaterials"); AliDebug(10, "Creating materials"); Int_t id; Double_t a = 0; Double_t z = 0; Double_t density = 0; Double_t radiationLength = 0; Double_t absorbtionLength = 999; Int_t fieldType = gAlice->Field()->Integ(); // Field type Double_t maxField = gAlice->Field()->Max(); // Field max. Double_t maxBending = 0; // Max Angle Double_t maxStepSize = 0.001; // Max step size Double_t maxEnergyLoss = 1; // Max Delta E Double_t precision = 0.001; // Precision Double_t minStepSize = 0.001; // Minimum step size // Silicon a = 28.0855; z = 14.; density = fSiDensity; radiationLength = 9.36; maxBending = 1; maxStepSize = .001; precision = .001; minStepSize = .001; id = kSiId; AliMaterial(id, "FMD Si$", a, z, density, radiationLength, absorbtionLength); AliMedium(kSiId, "FMD Si$",id,1,fieldType,maxField,maxBending, maxStepSize,maxEnergyLoss,precision,minStepSize); // Carbon a = 12.011; z = 6.; density = 2.265; radiationLength = 18.8; maxBending = 10; maxStepSize = .01; precision = .003; minStepSize = .003; id = kCarbonId; AliMaterial(id, "FMD Carbon$", a, z, density, radiationLength, absorbtionLength); AliMedium(kCarbonId, "FMD Carbon$",id,0,fieldType,maxField,maxBending, maxStepSize,maxEnergyLoss,precision,minStepSize); // Silicon chip { Float_t as[] = { 12.0107, 14.0067, 15.9994, 1.00794, 28.0855, 107.8682 }; Float_t zs[] = { 6., 7., 8., 1., 14., 47. }; Float_t ws[] = { 0.039730642, 0.001396798, 0.01169634, 0.004367771, 0.844665, 0.09814344903 }; density = 2.36436; maxBending = 10; maxStepSize = .01; precision = .003; minStepSize = .003; id = kSiChipId; AliMixture(id, "FMD Si Chip$", as, zs, density, 6, ws); AliMedium(kSiChipId, "FMD Si Chip$", id, 0, fieldType, maxField, maxBending, maxStepSize, maxEnergyLoss, precision, minStepSize); } // Kaption { Float_t as[] = { 1.00794, 12.0107, 14.010, 15.9994}; Float_t zs[] = { 1., 6., 7., 8.}; Float_t ws[] = { 0.026362, 0.69113, 0.07327, 0.209235}; density = 1.42; maxBending = 1; maxStepSize = .001; precision = .001; minStepSize = .001; id = kKaptionId; AliMixture(id, "FMD Kaption$", as, zs, density, 4, ws); AliMedium(kKaptionId, "FMD Kaption$",id,0,fieldType,maxField,maxBending, maxStepSize,maxEnergyLoss,precision,minStepSize); } // Air { Float_t as[] = { 12.0107, 14.0067, 15.9994, 39.948 }; Float_t zs[] = { 6., 7., 8., 18. }; Float_t ws[] = { 0.000124, 0.755267, 0.231781, 0.012827 }; density = .00120479; maxBending = 1; maxStepSize = .001; precision = .001; minStepSize = .001; id = kAirId; AliMixture(id, "FMD Air$", as, zs, density, 4, ws); AliMedium(kAirId, "FMD Air$", id,0,fieldType,maxField,maxBending, maxStepSize,maxEnergyLoss,precision,minStepSize); } // PCB { Float_t zs[] = { 14., 20., 13., 12., 5., 22., 11., 19., 26., 9., 8., 6., 7., 1.}; Float_t as[] = { 28.0855, 40.078, 26.981538, 24.305, 10.811, 47.867, 22.98977, 39.0983, 55.845, 18.9984, 15.9994, 12.0107, 14.0067, 1.00794}; Float_t ws[] = { 0.15144894, 0.08147477, 0.04128158, 0.00904554, 0.01397570, 0.00287685, 0.00445114, 0.00498089, 0.00209828, 0.00420000, 0.36043788, 0.27529426, 0.01415852, 0.03427566}; density = 1.8; maxBending = 1; maxStepSize = .001; precision = .001; minStepSize = .001; id = kPcbId; AliMixture(id, "FMD PCB$", as, zs, density, 14, ws); AliMedium(kPcbId, "FMD PCB$", id,1,fieldType,maxField,maxBending, maxStepSize,maxEnergyLoss,precision,minStepSize); } // Plastic { Float_t as[] = { 1.01, 12.01 }; Float_t zs[] = { 1., 6. }; Float_t ws[] = { 1., 1. }; density = 1.03; maxBending = 10; maxStepSize = .01; precision = .003; minStepSize = .003; id = kPlasticId; AliMixture(id, "FMD Plastic$", as, zs, density, -2, ws); AliMedium(kPlasticId, "FMD Plastic$", id,0,fieldType,maxField,maxBending, maxStepSize,maxEnergyLoss,precision,minStepSize); } AliMatrix(fPrintboardRotationId, 90, 90, 0, 90, 90, 0); AliMatrix(fIdentityRotationId, 90, 0, 90, 90, 0, 0); } //____________________________________________________________________ void AliFMD::Init() { // // Initialis the FMD after it has been built Int_t i; // if (fDebug) { std::cout << "\n" << ClassName() << ": " << std::flush; for (i = 0; i < 35; i++) std::cout << "*"; std::cout << " FMD_INIT "; for (i = 0; i < 35; i++) std::cout << "*"; std::cout << "\n" << ClassName() << ": " << std::flush; // // Here the FMD initialisation code (if any!) for (i = 0; i < 80; i++) std::cout << "*"; std::cout << std::endl; } // // } //==================================================================== // // Graphics and event display // //____________________________________________________________________ void AliFMD::BuildGeometry() { // // Build simple ROOT TNode geometry for event display // // Build a simplified geometry of the FMD used for event display // // The actual building of the TNodes is done by // AliFMDSubDetector::SimpleGeometry. AliDebug(10, "Creating a simplified geometry"); TNode* top = gAlice->GetGeometry()->GetNode("alice"); fFMD1->SimpleGeometry(fNodes, top, GetLineColor(), 0); fFMD2->SimpleGeometry(fNodes, top, GetLineColor(), 0); fFMD3->SimpleGeometry(fNodes, top, GetLineColor(), 0); } //____________________________________________________________________ void AliFMD::DrawDetector() { // // Draw a shaded view of the Forward multiplicity detector // // DebugGuard guard("AliFMD::DrawDetector"); AliDebug(10, "Draw detector"); //Set ALIC mother transparent gMC->Gsatt("ALIC","SEEN",0); //Set volumes visible fFMD1->Gsatt(); fFMD2->Gsatt(); fFMD3->Gsatt(); fInner->Gsatt(); fOuter->Gsatt(); // gMC->Gdopt("hide", "on"); gMC->Gdopt("shad", "on"); gMC->Gsatt("*", "fill", 7); gMC->SetClipBox("."); gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000); gMC->DefaultRange(); gMC->Gdraw("alic", 40, 30, 0, 12, 12, .055, .055); gMC->Gdhead(1111, "Forward Multiplicity Detector"); gMC->Gdman(16, 10, "MAN"); gMC->Gdopt("hide", "off"); } //____________________________________________________________________ const Int_t AliFMD::DistanceToPrimitive(Int_t, Int_t) { // // Calculate the distance from the mouse to the FMD on the screen // Dummy routine // return 9999; } //==================================================================== // // Hit and Digit managment // //____________________________________________________________________ void AliFMD::MakeBranch(Option_t * option) { // Create Tree branches for the FMD. // // Options: // // H Make a branch of TClonesArray of AliFMDHit's // D Make a branch of TClonesArray of AliFMDDigit's // S Make a branch of TClonesArray of AliFMDSDigit's // const Int_t kBufferSize = 16000; TString branchname(GetName()); TString opt(option); if (opt.Contains("H", TString::kIgnoreCase)) { HitsArray(); AliDetector::MakeBranch(option); } if (opt.Contains("D", TString::kIgnoreCase)) { DigitsArray(); MakeBranchInTree(fLoader->TreeD(), branchname.Data(), &fDigits, kBufferSize, 0); } if (opt.Contains("S", TString::kIgnoreCase)) { SDigitsArray(); MakeBranchInTree(fLoader->TreeS(), branchname.Data(), &fSDigits, kBufferSize, 0); } } //____________________________________________________________________ void AliFMD::SetTreeAddress() { // Set branch address for the Hits, Digits, and SDigits Tree. if (fLoader->TreeH()) HitsArray(); AliDetector::SetTreeAddress(); TTree *treeD = fLoader->TreeD(); if (treeD) { DigitsArray(); TBranch* branch = treeD->GetBranch ("FMD"); if (branch) branch->SetAddress(&fDigits); } TTree *treeS = fLoader->TreeS(); if (treeS) { SDigitsArray(); TBranch* branch = treeS->GetBranch ("FMD"); if (branch) branch->SetAddress(&fSDigits); } } //____________________________________________________________________ void AliFMD::SetHitsAddressBranch(TBranch *b) { // Set the TClonesArray to read hits into. b->SetAddress(&fHits); } //____________________________________________________________________ void AliFMD::AddHit(Int_t track, Int_t *vol, Float_t *hits) { // Add a hit to the hits tree // // The information of the two arrays are decoded as // // Parameters // track Track # // ivol[0] [UShort_t ] Detector # // ivol[1] [Char_t ] Ring ID // ivol[2] [UShort_t ] Sector # // ivol[3] [UShort_t ] Strip # // hits[0] [Float_t ] Track's X-coordinate at hit // hits[1] [Float_t ] Track's Y-coordinate at hit // hits[3] [Float_t ] Track's Z-coordinate at hit // hits[4] [Float_t ] X-component of track's momentum // hits[5] [Float_t ] Y-component of track's momentum // hits[6] [Float_t ] Z-component of track's momentum // hits[7] [Float_t ] Energy deposited by track // hits[8] [Int_t ] Track's particle Id # // hits[9] [Float_t ] Time when the track hit // // AddHit(track, UShort_t(vol[0]), // Detector # Char_t(vol[1]), // Ring ID UShort_t(vol[2]), // Sector # UShort_t(vol[3]), // Strip # hits[0], // X hits[1], // Y hits[2], // Z hits[3], // Px hits[4], // Py hits[5], // Pz hits[6], // Energy loss Int_t(hits[7]), // PDG hits[8]); // Time } //____________________________________________________________________ void AliFMD::AddHit(Int_t track, UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip, Float_t x, Float_t y, Float_t z, Float_t px, Float_t py, Float_t pz, Float_t edep, Int_t pdg, Float_t t) { // // Add a hit to the list // // Parameters: // // track Track # // detector Detector # (1, 2, or 3) // ring Ring ID ('I' or 'O') // sector Sector # (For inner/outer rings: 0-19/0-39) // strip Strip # (For inner/outer rings: 0-511/0-255) // x Track's X-coordinate at hit // y Track's Y-coordinate at hit // z Track's Z-coordinate at hit // px X-component of track's momentum // py Y-component of track's momentum // pz Z-component of track's momentum // edep Energy deposited by track // pdg Track's particle Id # // t Time when the track hit // TClonesArray& a = *(HitsArray()); // Search through the list of already registered hits, and see if we // find a hit with the same parameters. If we do, then don't create // a new hit, but rather update the energy deposited in the hit. // This is done, so that a FLUKA based simulation will get the // number of hits right, not just the enerrgy deposition. for (Int_t i = 0; i < fNhits; i++) { if (!a.At(i)) continue; AliFMDHit* hit = static_cast(a.At(i)); if (hit->Detector() == detector && hit->Ring() == ring && hit->Sector() == sector && hit->Strip() == strip && hit->Track() == track) { Warning("AddHit", "already had a hit in FMD%d%c[%2d,%3d] for track # %d," " adding energy (%f) to that hit (%f) -> %f", detector, ring, sector, strip, track, edep, hit->Edep(), hit->Edep() + edep); hit->SetEdep(hit->Edep() + edep); return; } } // If hit wasn't already registered, do so know. new (a[fNhits]) AliFMDHit(fIshunt, track, detector, ring, sector, strip, x, y, z, px, py, pz, edep, pdg, t); fNhits++; } //____________________________________________________________________ void AliFMD::AddDigit(Int_t* digits) { // Add a digit to the Digit tree // // Paramters // // digits[0] [UShort_t] Detector # // digits[1] [Char_t] Ring ID // digits[2] [UShort_t] Sector # // digits[3] [UShort_t] Strip # // digits[4] [UShort_t] ADC Count // digits[5] [Short_t] ADC Count, -1 if not used // digits[6] [Short_t] ADC Count, -1 if not used // AddDigit(UShort_t(digits[0]), // Detector # Char_t(digits[1]), // Ring ID UShort_t(digits[2]), // Sector # UShort_t(digits[3]), // Strip # UShort_t(digits[4]), // ADC Count1 Short_t(digits[5]), // ADC Count2 Short_t(digits[6])); // ADC Count3 } //____________________________________________________________________ void AliFMD::AddDigit(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip, UShort_t count1, Short_t count2, Short_t count3) { // add a real digit - as coming from data // // Parameters // // detector Detector # (1, 2, or 3) // ring Ring ID ('I' or 'O') // sector Sector # (For inner/outer rings: 0-19/0-39) // strip Strip # (For inner/outer rings: 0-511/0-255) // count1 ADC count (a 10-bit word) // count2 ADC count (a 10-bit word), or -1 if not used // count3 ADC count (a 10-bit word), or -1 if not used TClonesArray& a = *(DigitsArray()); new (a[fNdigits++]) AliFMDDigit(detector, ring, sector, strip, count1, count2, count3); } //____________________________________________________________________ void AliFMD::AddSDigit(Int_t* digits) { // Add a digit to the SDigit tree // // Paramters // // digits[0] [UShort_t] Detector # // digits[1] [Char_t] Ring ID // digits[2] [UShort_t] Sector # // digits[3] [UShort_t] Strip # // digits[4] [Float_t] Total energy deposited // digits[5] [UShort_t] ADC Count // digits[6] [Short_t] ADC Count, -1 if not used // digits[7] [Short_t] ADC Count, -1 if not used // AddSDigit(UShort_t(digits[0]), // Detector # Char_t(digits[1]), // Ring ID UShort_t(digits[2]), // Sector # UShort_t(digits[3]), // Strip # Float_t(digits[4]), // Edep UShort_t(digits[5]), // ADC Count1 Short_t(digits[6]), // ADC Count2 Short_t(digits[7])); // ADC Count3 } //____________________________________________________________________ void AliFMD::AddSDigit(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip, Float_t edep, UShort_t count1, Short_t count2, Short_t count3) { // add a summable digit // // Parameters // // detector Detector # (1, 2, or 3) // ring Ring ID ('I' or 'O') // sector Sector # (For inner/outer rings: 0-19/0-39) // strip Strip # (For inner/outer rings: 0-511/0-255) // edep Total energy deposited // count1 ADC count (a 10-bit word) // count2 ADC count (a 10-bit word), or -1 if not used // count3 ADC count (a 10-bit word), or -1 if not used // TClonesArray& a = *(SDigitsArray()); new (a[fNsdigits++]) AliFMDSDigit(detector, ring, sector, strip, edep, count1, count2, count3); } //____________________________________________________________________ void AliFMD::ResetSDigits() { // // Reset number of digits and the digits array for this detector // fNsdigits = 0; if (fSDigits) fSDigits->Clear(); } //____________________________________________________________________ TClonesArray* AliFMD::HitsArray() { // Initialize hit array if not already, and return pointer to it. if (!fHits) { fHits = new TClonesArray("AliFMDHit", 1000); fNhits = 0; } return fHits; } //____________________________________________________________________ TClonesArray* AliFMD::DigitsArray() { // Initialize digit array if not already, and return pointer to it. if (!fDigits) { fDigits = new TClonesArray("AliFMDDigit", 1000); fNdigits = 0; } return fDigits; } //____________________________________________________________________ TClonesArray* AliFMD::SDigitsArray() { // Initialize digit array if not already, and return pointer to it. if (!fSDigits) { fSDigits = new TClonesArray("AliFMDSDigit", 1000); fNsdigits = 0; } return fSDigits; } //==================================================================== // // Digitization // //____________________________________________________________________ void AliFMD::Hits2Digits() { // Create AliFMDDigit's from AliFMDHit's. This is done by making a // AliFMDDigitizer, and executing that code. // AliRunDigitizer* manager = new AliRunDigitizer(1, 1); manager->SetInputStream(0, "galice.root"); manager->SetOutputFile("H2Dfile"); /* AliDigitizer* dig =*/ CreateDigitizer(manager); manager->Exec(""); } //____________________________________________________________________ void AliFMD::Hits2SDigits() { // Create AliFMDSDigit's from AliFMDHit's. This is done by creating // an AliFMDSDigitizer object, and executing it. // AliDigitizer* sdig = new AliFMDSDigitizer("galice.root"); sdig->Exec(""); } //____________________________________________________________________ AliDigitizer* AliFMD::CreateDigitizer(AliRunDigitizer* manager) const { // Create a digitizer object return new AliFMDDigitizer(manager); } //==================================================================== // // Raw data simulation // //__________________________________________________________________ void AliFMD::Digits2Raw() { // Turn digits into raw data. // // Digits are read from the Digit branch, and processed to make // three DDL files, one for each of the sub-detectors FMD1, FMD2, // and FMD3. // // The raw data files consists of a header, followed by ALTRO // formatted blocks. // // +-------------+ // | Header | // +-------------+ // | ALTRO Block | // | ... | // +-------------+ // DDL file // // An ALTRO formatted block, in the FMD context, consists of a // number of counts followed by a trailer. // // +------------------+ // | Count | // | ... | // | possible fillers | // +------------------+ // | Trailer | // +------------------+ // ALTRO block // // The counts are listed backwards, that is, starting with the // latest count, and ending in the first. // // Each count consist of 1 or more ADC samples of the VA1_ALICE // pre-amp. signal. Just how many samples are used depends on // whether the ALTRO over samples the pre-amp. Each sample is a // 10-bit word, and the samples are grouped into 40-bit blocks // // +------------------------------------+ // | S(n) | S(n-1) | S(n-2) | S(n-3) | // | ... | ... | ... | ... | // | S(2) | S(1) | AA | AA | // +------------------------------------+ // Counts + possible filler // // The trailer of the number of words of signales, the starting // strip number, the sector number, and the ring ID; each 10-bit // words, packed into 40-bits. // // +------------------------------------+ // | # words | start | sector | ring | // +------------------------------------+ // Trailer // // Note, that this method assumes that the digits are ordered. // AliFMD* fmd = static_cast(gAlice->GetDetector(GetName())); fLoader->LoadDigits(); TTree* digitTree = fLoader->TreeD(); if (!digitTree) { Error("Digits2Raw", "no digit tree"); return; } TClonesArray* digits = new TClonesArray("AliFMDDigit", 1000); fmd->SetTreeAddress(); TBranch* digitBranch = digitTree->GetBranch(GetName()); if (!digitBranch) { Error("Digits2Raw", "no branch for %s", GetName()); return; } digitBranch->SetAddress(&digits); Int_t nEvents = Int_t(digitTree->GetEntries()); for (Int_t event = 0; event < nEvents; event++) { fmd->ResetDigits(); digitTree->GetEvent(event); Int_t nDigits = digits->GetEntries(); if (nDigits < 1) continue; UShort_t prevDetector = 0; Char_t prevRing = '\0'; UShort_t prevSector = 0; // UShort_t prevStrip = 0; // The first seen strip number for a channel UShort_t startStrip = 0; // Which channel number in the ALTRO channel we're at UShort_t offset = 0; // How many times the ALTRO Samples one VA1_ALICE channel Int_t sampleRate = 1; // A buffer to hold 1 ALTRO channel - Normally, one ALTRO channel // holds 128 VA1_ALICE channels, sampled at a rate of `sampleRate' TArrayI channel(128 * sampleRate); // The Altro buffer AliAltroBuffer* altro = 0; // Loop over the digits in the event. Note, that we assume the // the digits are in order in the branch. If they were not, we'd // have to cache all channels before we could write the data to // the ALTRO buffer, or we'd have to set up a map of the digits. for (Int_t i = 0; i < nDigits; i++) { // Get the digit AliFMDDigit* digit = static_cast(digits->At(i)); UShort_t det = digit->Detector(); Char_t ring = digit->Ring(); UShort_t sector = digit->Sector(); UShort_t strip = digit->Strip(); if (det != prevDetector) { AliDebug(10, Form("FMD: New DDL, was %d, now %d", kBaseDDL + prevDetector - 1, kBaseDDL + det - 1)); // If an altro exists, delete the object, flushing the data to // disk, and closing the file. if (altro) { // When the first argument is false, we write the real // header. AliDebug(10, Form("New altro: Write channel at %d Strip: %d " "Sector: %d Ring: %d", i, startStrip, prevSector, prevRing)); // TPC to FMD translations // // TPC FMD // ----------+----------- // pad | strip // row | sector // sector | ring // altro->WriteChannel(Int_t(startStrip), Int_t(prevSector), Int_t((prevRing == 'I' ? 0 : 1)), channel.fN, channel.fArray, 0); altro->Flush(); altro->WriteDataHeader(kFALSE, kFALSE); delete altro; altro = 0; } prevDetector = det; // Need to open a new DDL! Int_t ddlId = kBaseDDL + det - 1; TString filename(Form("%s_%d.ddl", GetName(), ddlId)); AliDebug(10, Form("New altro buffer with DDL file %s", filename.Data())); AliDebug(10, Form("New altro at %d", i)); // Create a new altro buffer - a `1' as the second argument // means `write mode' altro = new AliAltroBuffer(filename.Data(), 1); // Write a dummy (first argument is true) header to the DDL // file - later on, when we close the file, we write the real // header altro->WriteDataHeader(kTRUE, kFALSE); // Figure out the sample rate if (digit->Count2() > 0) sampleRate = 2; if (digit->Count3() > 0) sampleRate = 3; channel.Set(128 * sampleRate); offset = 0; prevRing = ring; prevSector = sector; startStrip = strip; } else if (offset == 128 || digit->Ring() != prevRing || digit->Sector() != prevSector) { // Force a new Altro channel AliDebug(10, Form("Flushing channel to disk because %s", (offset == 128 ? "channel is full" : (ring != prevRing ? "new ring up" : "new sector up")))); AliDebug(10, Form("New Channel: Write channel at %d Strip: %d " "Sector: %d Ring: %d", i, startStrip, prevSector, prevRing)); altro->WriteChannel(Int_t(startStrip), Int_t(prevSector), Int_t((prevRing == 'I' ? 0 : 1)), channel.fN, channel.fArray, 0); // Reset and update channel variables channel.Reset(0); offset = 0; startStrip = strip; prevRing = ring; prevSector = sector; } // Store the counts of the ADC in the channel buffer channel[offset * sampleRate] = digit->Count1(); if (sampleRate > 1) channel[offset * sampleRate + 1] = digit->Count2(); if (sampleRate > 2) channel[offset * sampleRate + 2] = digit->Count3(); offset++; } // Finally, we need to close the final ALTRO buffer if it wasn't // already if (altro) { altro->Flush(); altro->WriteDataHeader(kFALSE, kFALSE); delete altro; } } fLoader->UnloadDigits(); } //================================================================== // // Various setter functions for the common paramters // //__________________________________________________________________ void AliFMD::SetLegLength(Double_t length) { // Set lenght of plastic legs that hold the hybrid (print board and // silicon sensor) onto the honeycomp support // // DebugGuard guard("AliFMD::SetLegLength"); AliDebug(10, "AliFMD::SetLegLength"); fLegLength = length; fInner->SetLegLength(fLegLength); fOuter->SetLegLength(fLegLength); } //__________________________________________________________________ void AliFMD::SetLegOffset(Double_t offset) { // Set offset from edge of hybrid to plastic legs that hold the // hybrid (print board and silicon sensor) onto the honeycomp // support // // DebugGuard guard("AliFMD::SetLegOffset"); AliDebug(10, "AliFMD::SetLegOffset"); fInner->SetLegOffset(offset); fOuter->SetLegOffset(offset); } //__________________________________________________________________ void AliFMD::SetLegRadius(Double_t radius) { // Set the diameter of the plastic legs that hold the hybrid (print // board and silicon sensor) onto the honeycomp support // // DebugGuard guard("AliFMD::SetLegRadius"); AliDebug(10, "AliFMD::SetLegRadius"); fLegRadius = radius; fInner->SetLegRadius(fLegRadius); fOuter->SetLegRadius(fLegRadius); } //__________________________________________________________________ void AliFMD::SetModuleSpacing(Double_t spacing) { // Set the distance between the front and back sensor modules // (module staggering). // // DebugGuard guard("AliFMD::SetModuleSpacing"); AliDebug(10, "AliFMD::SetModuleSpacing"); fModuleSpacing = spacing; fInner->SetModuleSpacing(fModuleSpacing); fOuter->SetModuleSpacing(fModuleSpacing); } //==================================================================== // // Utility // //__________________________________________________________________ void AliFMD::Browse(TBrowser* b) { // Browse this object. // AliDebug(10, "AliFMD::Browse"); AliDetector::Browse(b); if (fInner) b->Add(fInner, "Inner Ring"); if (fOuter) b->Add(fOuter, "Outer Ring"); if (fFMD1) b->Add(fFMD1, "FMD1 SubDetector"); if (fFMD2) b->Add(fFMD2, "FMD2 SubDetector"); if (fFMD3) b->Add(fFMD3, "FMD3 SubDetector"); } //___________________________________________________________________ // // EOF //