X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDv1.cxx;h=77208541b8e3b437bfb2809393782e35121a93d4;hb=878fa0b3d4ee196b1e5cbd9da488c4109517c0f3;hp=0c238f9c51b1b11165d97fbed4d692f133ca0b11;hpb=2fa01832717e4446cfc61fbbc7a4a84656efa265;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDv1.cxx b/TRD/AliTRDv1.cxx index 0c238f9c51b..77208541b8e 100644 --- a/TRD/AliTRDv1.cxx +++ b/TRD/AliTRDv1.cxx @@ -30,15 +30,20 @@ #include #include #include +#include +#include #include "AliConst.h" #include "AliLog.h" +#include "AliTrackReference.h" #include "AliMC.h" #include "AliRun.h" +#include "AliGeomManager.h" #include "AliTRDgeometry.h" +#include "AliTRDCommonParam.h" #include "AliTRDhit.h" -#include "AliTRDsim.h" +#include "AliTRDsimTR.h" #include "AliTRDv1.h" ClassImp(AliTRDv1) @@ -50,6 +55,7 @@ AliTRDv1::AliTRDv1() ,fTR(NULL) ,fTypeOfStepManager(0) ,fStepSize(0) + ,fWion(0) ,fDeltaE(NULL) ,fDeltaG(NULL) ,fTrackLength0(0) @@ -68,6 +74,7 @@ AliTRDv1::AliTRDv1(const char *name, const char *title) ,fTR(NULL) ,fTypeOfStepManager(2) ,fStepSize(0.1) + ,fWion(0) ,fDeltaE(NULL) ,fDeltaG(NULL) ,fTrackLength0(0) @@ -79,6 +86,17 @@ AliTRDv1::AliTRDv1(const char *name, const char *title) SetBufferSize(128000); + if (AliTRDCommonParam::Instance()->IsXenon()) { + fWion = 23.53; // Ionization energy XeCO2 (85/15) + } + else if (AliTRDCommonParam::Instance()->IsArgon()) { + fWion = 27.21; // Ionization energy ArCO2 (82/18) + } + else { + AliFatal("Wrong gas mixture"); + exit(1); + } + } //_____________________________________________________________________________ @@ -117,14 +135,16 @@ void AliTRDv1::AddAlignableVolumes() const TString volPath; TString symName; - TString vpStr = "ALIC_1/B077_1/BSEGMO"; - TString vpApp1 = "_1/BTRD"; - TString vpApp2 = "_1"; - TString vpApp3 = "/UTR1_1/UTS1_1/UTI1_1/UT"; + TString vpStr = "ALIC_1/B077_1/BSEGMO"; + TString vpApp1 = "_1/BTRD"; + TString vpApp2 = "_1"; + TString vpApp3a = "/UTR1_1/UTS1_1/UTI1_1/UT"; + TString vpApp3b = "/UTR2_1/UTS2_1/UTI2_1/UT"; + TString vpApp3c = "/UTR3_1/UTS3_1/UTI3_1/UT"; - TString snStr = "TRD/sm"; - TString snApp1 = "/st"; - TString snApp2 = "/pl"; + TString snStr = "TRD/sm"; + TString snApp1 = "/st"; + TString snApp2 = "/pl"; // // The super modules @@ -132,16 +152,16 @@ void AliTRDv1::AddAlignableVolumes() const // ... // TRD/sm17 // - for (Int_t isect = 0; isect < AliTRDgeometry::Nsect(); isect++) { + for (Int_t isector = 0; isector < AliTRDgeometry::Nsector(); isector++) { volPath = vpStr; - volPath += isect; + volPath += isector; volPath += vpApp1; - volPath += isect; + volPath += isector; volPath += vpApp2; symName = snStr; - symName += Form("%02d",isect); + symName += Form("%02d",isector); gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()); @@ -153,29 +173,67 @@ void AliTRDv1::AddAlignableVolumes() const // ... // TRD/sm17/st4/pl5 // - for (Int_t isect = 0; isect < AliTRDgeometry::Nsect(); isect++) { - for (Int_t icham = 0; icham < AliTRDgeometry::Ncham(); icham++) { - for (Int_t iplan = 0; iplan < AliTRDgeometry::Nplan(); iplan++) { + AliGeomManager::ELayerID idTRD1 = AliGeomManager::kTRD1; + Int_t layer, modUID; + + for (Int_t isector = 0; isector < AliTRDgeometry::Nsector(); isector++) { - Int_t idet = AliTRDgeometry::GetDetectorSec(iplan,icham); + if (fGeometry->GetSMstatus(isector) == 0) continue; + + for (Int_t istack = 0; istack < AliTRDgeometry::Nstack(); istack++) { + for (Int_t ilayer = 0; ilayer < AliTRDgeometry::Nlayer(); ilayer++) { + + layer = idTRD1 + ilayer; + modUID = AliGeomManager::LayerToVolUIDSafe(layer,isector*5+istack); + + Int_t idet = AliTRDgeometry::GetDetectorSec(ilayer,istack); volPath = vpStr; - volPath += isect; + volPath += isector; volPath += vpApp1; - volPath += isect; + volPath += isector; volPath += vpApp2; - volPath += vpApp3; + switch (isector) { + case 13: + case 14: + case 15: + if (istack == 2) { + continue; + } + volPath += vpApp3c; + break; + case 11: + case 12: + volPath += vpApp3b; + break; + default: + volPath += vpApp3a; + }; volPath += Form("%02d",idet); volPath += vpApp2; symName = snStr; - symName += Form("%02d",isect); + symName += Form("%02d",isector); symName += snApp1; - symName += icham; + symName += istack; symName += snApp2; - symName += iplan; - - gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()); + symName += ilayer; + + TGeoPNEntry *alignableEntry = + gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data(),modUID); + + // Add the tracking to local matrix following the TPC example + if (alignableEntry) { + TGeoHMatrix *globMatrix = alignableEntry->GetGlobalOrig(); + Double_t sectorAngle = 20.0 * (isector % 18) + 10.0; + TGeoHMatrix *t2lMatrix = new TGeoHMatrix(); + t2lMatrix->RotateZ(sectorAngle); + t2lMatrix->MultiplyLeft(&(globMatrix->Inverse())); + alignableEntry->SetMatrix(t2lMatrix); + } + else { + AliError(Form("Alignable entry %s is not valid!",symName.Data())); + } } } @@ -225,9 +283,6 @@ void AliTRDv1::CreateTRhit(Int_t det) // volume. // - // Ionization energy - const Float_t kWion = 23.53; - // Maximum number of TR photons per track const Int_t kNTR = 50; @@ -268,9 +323,17 @@ void AliTRDv1::CreateTRhit(Int_t det) // The absorbtion cross sections in the drift gas // Gas-mixture (Xe/CO2) - Double_t muXe = fTR->GetMuXe(energyMeV); + Double_t muNo = 0.0; + if (AliTRDCommonParam::Instance()->IsXenon()) { + muNo = fTR->GetMuXe(energyMeV); + } + else if (AliTRDCommonParam::Instance()->IsArgon()) { + muNo = fTR->GetMuAr(energyMeV); + } Double_t muCO = fTR->GetMuCO(energyMeV); - sigma = (0.85 * muXe + 0.15 * muCO) * fGasDensity * fTR->GetTemp(); + sigma = (fGasNobleFraction * muNo + (1.0 - fGasNobleFraction) * muCO) + * fGasDensity + * fTR->GetTemp(); // The distance after which the energy of the TR photon // is deposited. @@ -293,16 +356,15 @@ void AliTRDv1::CreateTRhit(Int_t det) posHit[2] = pos[2] + mom[2] / pTot * absLength; // Create the charge - Int_t q = ((Int_t) (energyeV / kWion)); + Int_t q = ((Int_t) (energyeV / fWion)); // Add the hit to the array. TR photon hits are marked // by negative charge - // The hit time is needed for pile-up events AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber() ,det ,posHit ,-q - ,gMC->TrackTime()*1.0e06 + ,gMC->TrackTime()*1.0e06 ,kTRUE); } @@ -325,10 +387,10 @@ void AliTRDv1::Init() AliInfo("TR simulation off"); } else { - fTR = new AliTRDsim(); + fTR = new AliTRDsimTR(); } - // First ionization potential (eV) for the gas mixture (90% Xe + 10% CO2) + // First ionization potential (eV) for the gas mixture const Float_t kPoti = 12.1; // Maximum energy (50 keV); const Float_t kEend = 50000.0; @@ -394,13 +456,15 @@ void AliTRDv1::StepManagerGeant() // to Bethe-Bloch. The energy distribution of the delta electrons follows // a spectrum taken from Geant3. // + // Works only for Xe/CO2!! + // // Version by A. Bercuci // - Int_t pla = 0; - Int_t cha = 0; - Int_t sec = 0; - Int_t det = 0; + Int_t layer = 0; + Int_t stack = 0; + Int_t sector = 0; + Int_t det = 0; Int_t iPdg; Int_t qTot; @@ -432,12 +496,11 @@ void AliTRDv1::StepManagerGeant() TArrayI processes; - const Int_t kNplan = AliTRDgeometry::Nplan(); - const Int_t kNcham = AliTRDgeometry::Ncham(); - const Int_t kNdetsec = kNplan * kNcham; + const Int_t kNlayer = AliTRDgeometry::Nlayer(); + const Int_t kNstack = AliTRDgeometry::Nstack(); + const Int_t kNdetsec = kNlayer * kNstack; const Double_t kBig = 1.0e+12; // Infinitely big - const Float_t kWion = 23.53; // Ionization energy const Float_t kPTotMaxEl = 0.002; // Maximum momentum for e+ e- g // Minimum energy for the step size adjustment @@ -492,17 +555,17 @@ void AliTRDv1::StepManagerGeant() cIdPath = gGeoManager->GetPath(); cIdSector[0] = cIdPath[21]; cIdSector[1] = cIdPath[22]; - sec = atoi(cIdSector); + sector = atoi(cIdSector); - // The plane and chamber number + // The layer and stack number cIdChamber[0] = cIdCurrent[2]; cIdChamber[1] = cIdCurrent[3]; Int_t idChamber = (atoi(cIdChamber) % kNdetsec); - cha = ((Int_t) idChamber / kNplan); - pla = ((Int_t) idChamber % kNplan); + stack = ((Int_t) idChamber / kNlayer); + layer = ((Int_t) idChamber % kNlayer); // The detector number - det = fGeometry->GetDetector(pla,cha,sec); + det = fGeometry->GetDetector(layer,stack,sector); // Special hits only in the drift region if ((drRegion) && @@ -511,13 +574,13 @@ void AliTRDv1::StepManagerGeant() // Create a track reference at the entrance of each // chamber that contains the momentum components of the particle gMC->TrackMomentum(mom); - AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); + AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTRD); // Create the hits from TR photons if electron/positron is // entering the drift volume if ((fTR) && (TMath::Abs(gMC->TrackPid()) == kPdgElectron)) { - CreateTRhit(det); + CreateTRhit(det); } } @@ -527,7 +590,7 @@ void AliTRDv1::StepManagerGeant() // Create a track reference at the exit of each // chamber that contains the momentum components of the particle gMC->TrackMomentum(mom); - AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); + AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTRD); } @@ -546,7 +609,7 @@ void AliTRDv1::StepManagerGeant() pid = 0; } else { - pid = processes[nofprocesses-1]; + pid = processes[nofprocesses-1]; } // Generate Edep according to GEANT parametrisation @@ -592,15 +655,14 @@ void AliTRDv1::StepManagerGeant() // Generate the electron cluster size if (eDelta > 0.0) { - qTot = ((Int_t) (eDelta / kWion) + 1); + qTot = ((Int_t) (eDelta / fWion) + 1); // Create a new dEdx hit - // The hit time is needed for pile-up events AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber() ,det ,hits ,qTot - ,gMC->TrackTime()*1.0e06 + ,gMC->TrackTime()*1.0e06 ,drRegion); } @@ -654,11 +716,13 @@ void AliTRDv1::StepManagerErmilova() // to Bethe-Bloch. The energy distribution of the delta electrons follows // a spectrum taken from Ermilova et al. // + // Works only for Xe/CO2!! + // - Int_t pla = 0; - Int_t cha = 0; - Int_t sec = 0; - Int_t det = 0; + Int_t layer = 0; + Int_t stack = 0; + Int_t sector = 0; + Int_t det = 0; Int_t iPdg; Int_t qTot; @@ -689,12 +753,11 @@ void AliTRDv1::StepManagerErmilova() TLorentzVector pos; TLorentzVector mom; - const Int_t kNplan = AliTRDgeometry::Nplan(); - const Int_t kNcham = AliTRDgeometry::Ncham(); - const Int_t kNdetsec = kNplan * kNcham; + const Int_t kNlayer = AliTRDgeometry::Nlayer(); + const Int_t kNstack = AliTRDgeometry::Nstack(); + const Int_t kNdetsec = kNlayer * kNstack; const Double_t kBig = 1.0e+12; // Infinitely big - const Float_t kWion = 23.53; // Ionization energy const Float_t kPTotMaxEl = 0.002; // Maximum momentum for e+ e- g // Minimum energy for the step size adjustment @@ -740,17 +803,17 @@ void AliTRDv1::StepManagerErmilova() cIdPath = gGeoManager->GetPath(); cIdSector[0] = cIdPath[21]; cIdSector[1] = cIdPath[22]; - sec = atoi(cIdSector); + sector = atoi(cIdSector); // The plane and chamber number cIdChamber[0] = cIdCurrent[2]; cIdChamber[1] = cIdCurrent[3]; Int_t idChamber = (atoi(cIdChamber) % kNdetsec); - cha = ((Int_t) idChamber / kNplan); - pla = ((Int_t) idChamber % kNplan); + stack = ((Int_t) idChamber / kNlayer); + layer = ((Int_t) idChamber % kNlayer); // The detector number - det = fGeometry->GetDetector(pla,cha,sec); + det = fGeometry->GetDetector(layer,stack,sector); // Special hits only in the drift region if ((drRegion) && @@ -759,13 +822,13 @@ void AliTRDv1::StepManagerErmilova() // Create a track reference at the entrance of each // chamber that contains the momentum components of the particle gMC->TrackMomentum(mom); - AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); + AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTRD); // Create the hits from TR photons if electron/positron is // entering the drift volume if ((fTR) && (TMath::Abs(gMC->TrackPid()) == kPdgElectron)) { - CreateTRhit(det); + CreateTRhit(det); } } @@ -775,7 +838,7 @@ void AliTRDv1::StepManagerErmilova() // Create a track reference at the exit of each // chamber that contains the momentum components of the particle gMC->TrackMomentum(mom); - AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); + AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTRD); } @@ -786,16 +849,15 @@ void AliTRDv1::StepManagerErmilova() // Generate the electron cluster size if (eDelta > 0.0) { - qTot = ((Int_t) (eDelta / kWion) + 1); + qTot = ((Int_t) (eDelta / fWion) + 1); // Create a new dEdx hit - // The hit time is needed for pile-up events if (drRegion) { AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber() ,det ,hits ,qTot - ,gMC->TrackTime()*1.0e06 + ,gMC->TrackTime()*1.0e06 ,kTRUE); } else { @@ -803,7 +865,7 @@ void AliTRDv1::StepManagerErmilova() ,det ,hits ,qTot - ,gMC->TrackTime()*1.0e06 + ,gMC->TrackTime()*1.0e06 ,kFALSE); } @@ -860,14 +922,16 @@ void AliTRDv1::StepManagerFixedStep() // along its path across the drift volume. The step size is fixed in // this version of the step manager. // + // Works for Xe/CO2 as well as Ar/CO2 + // // PDG code electron const Int_t kPdgElectron = 11; - Int_t pla = 0; - Int_t cha = 0; - Int_t sec = 0; - Int_t det = 0; + Int_t layer = 0; + Int_t stack = 0; + Int_t sector = 0; + Int_t det = 0; Int_t qTot; Float_t hits[3]; @@ -889,13 +953,11 @@ void AliTRDv1::StepManagerFixedStep() TLorentzVector pos; TLorentzVector mom; - const Int_t kNplan = AliTRDgeometry::Nplan(); - const Int_t kNcham = AliTRDgeometry::Ncham(); - const Int_t kNdetsec = kNplan * kNcham; + const Int_t kNlayer = AliTRDgeometry::Nlayer(); + const Int_t kNstack = AliTRDgeometry::Nstack(); + const Int_t kNdetsec = kNlayer * kNstack; const Double_t kBig = 1.0e+12; - - const Float_t kWion = 23.53; // Ionization energy const Float_t kEkinMinStep = 1.0e-5; // Minimum energy for the step size adjustment // Set the maximum step size to a very large number for all @@ -933,19 +995,19 @@ void AliTRDv1::StepManagerFixedStep() cIdPath = gGeoManager->GetPath(); cIdSector[0] = cIdPath[21]; cIdSector[1] = cIdPath[22]; - sec = atoi(cIdSector); + sector = atoi(cIdSector); // The plane and chamber number cIdChamber[0] = cIdCurrent[2]; cIdChamber[1] = cIdCurrent[3]; Int_t idChamber = (atoi(cIdChamber) % kNdetsec); - cha = ((Int_t) idChamber / kNplan); - pla = ((Int_t) idChamber % kNplan); + stack = ((Int_t) idChamber / kNlayer); + layer = ((Int_t) idChamber % kNlayer); // The detector number - det = fGeometry->GetDetector(pla,cha,sec); + det = fGeometry->GetDetector(layer,stack,sector); - // 0:InFlight 1:Entering 2:Exiting + // 0: InFlight 1:Entering 2:Exiting Int_t trkStat = 0; // Special hits only in the drift region @@ -955,14 +1017,14 @@ void AliTRDv1::StepManagerFixedStep() // Create a track reference at the entrance of each // chamber that contains the momentum components of the particle gMC->TrackMomentum(mom); - AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); + AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTRD); trkStat = 1; // Create the hits from TR photons if electron/positron is // entering the drift volume if ((fTR) && (TMath::Abs(gMC->TrackPid()) == kPdgElectron)) { - CreateTRhit(det); + CreateTRhit(det); } } @@ -972,23 +1034,22 @@ void AliTRDv1::StepManagerFixedStep() // Create a track reference at the exit of each // chamber that contains the momentum components of the particle gMC->TrackMomentum(mom); - AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); + AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTRD); trkStat = 2; } // Calculate the charge according to GEANT Edep // Create a new dEdx hit - // The hit time is needed for pile-up events eDep = TMath::Max(gMC->Edep(),0.0) * 1.0e+09; - qTot = (Int_t) (eDep / kWion); + qTot = (Int_t) (eDep / fWion); if ((qTot) || (trkStat)) { AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber() ,det ,hits ,qTot - ,gMC->TrackTime()*1.0e06 + ,gMC->TrackTime()*1.0e06 ,drRegion); } @@ -1189,6 +1250,10 @@ Double_t IntSpecGeant(Double_t *x, Double_t *) Int_t i; Double_t energy = x[0]; + if (energy >= arre[npts-1]) { + return 0.0; + } + for (i = 0; i < npts; i++) { if (energy < arre[i]) { break;