X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=TRD%2FAliTRDv1.cxx;h=77208541b8e3b437bfb2809393782e35121a93d4;hb=878fa0b3d4ee196b1e5cbd9da488c4109517c0f3;hp=f0ab04e9fb163eb0a5648d7d3a4d32a4c227fb71;hpb=92cd97ad5ff4d212f562f8d818c085434c0c3f16;p=u%2Fmrichter%2FAliRoot.git diff --git a/TRD/AliTRDv1.cxx b/TRD/AliTRDv1.cxx index f0ab04e9fb1..77208541b8e 100644 --- a/TRD/AliTRDv1.cxx +++ b/TRD/AliTRDv1.cxx @@ -30,6 +30,7 @@ #include #include #include +#include #include #include "AliConst.h" @@ -37,8 +38,10 @@ #include "AliTrackReference.h" #include "AliMC.h" #include "AliRun.h" +#include "AliGeomManager.h" #include "AliTRDgeometry.h" +#include "AliTRDCommonParam.h" #include "AliTRDhit.h" #include "AliTRDsimTR.h" #include "AliTRDv1.h" @@ -52,6 +55,7 @@ AliTRDv1::AliTRDv1() ,fTR(NULL) ,fTypeOfStepManager(0) ,fStepSize(0) + ,fWion(0) ,fDeltaE(NULL) ,fDeltaG(NULL) ,fTrackLength0(0) @@ -70,6 +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) @@ -81,6 +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); + } + } //_____________________________________________________________________________ @@ -136,16 +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()); @@ -157,25 +173,31 @@ void AliTRDv1::AddAlignableVolumes() const // ... // TRD/sm17/st4/pl5 // - for (Int_t isect = 0; isect < AliTRDgeometry::Nsect(); isect++) { + AliGeomManager::ELayerID idTRD1 = AliGeomManager::kTRD1; + Int_t layer, modUID; + + for (Int_t isector = 0; isector < AliTRDgeometry::Nsector(); isector++) { + + if (fGeometry->GetSMstatus(isector) == 0) continue; - if (fGeometry->GetSMstatus(isect) == 0) continue; + for (Int_t istack = 0; istack < AliTRDgeometry::Nstack(); istack++) { + for (Int_t ilayer = 0; ilayer < AliTRDgeometry::Nlayer(); ilayer++) { - for (Int_t icham = 0; icham < AliTRDgeometry::Ncham(); icham++) { - for (Int_t iplan = 0; iplan < AliTRDgeometry::Nplan(); iplan++) { + layer = idTRD1 + ilayer; + modUID = AliGeomManager::LayerToVolUIDSafe(layer,isector*5+istack); - Int_t idet = AliTRDgeometry::GetDetectorSec(iplan,icham); + Int_t idet = AliTRDgeometry::GetDetectorSec(ilayer,istack); volPath = vpStr; - volPath += isect; + volPath += isector; volPath += vpApp1; - volPath += isect; + volPath += isector; volPath += vpApp2; - switch (isect) { + switch (isector) { case 13: case 14: case 15: - if (icham == 2) { + if (istack == 2) { continue; } volPath += vpApp3c; @@ -191,24 +213,19 @@ void AliTRDv1::AddAlignableVolumes() const volPath += vpApp2; symName = snStr; - symName += Form("%02d",isect); + symName += Form("%02d",isector); symName += snApp1; - symName += icham; + symName += istack; symName += snApp2; - symName += iplan; + symName += ilayer; TGeoPNEntry *alignableEntry = - gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()); + gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data(),modUID); // Add the tracking to local matrix following the TPC example if (alignableEntry) { - const char *path = alignableEntry->GetTitle(); - if (!gGeoManager->cd(path)) { - AliFatal(Form("Volume path %s not valid!",path)); - } - // Is this correct still???? - TGeoHMatrix *globMatrix = gGeoManager->GetCurrentMatrix(); - Double_t sectorAngle = 20.0 * (isect % 18) + 10.0; + TGeoHMatrix *globMatrix = alignableEntry->GetGlobalOrig(); + Double_t sectorAngle = 20.0 * (isector % 18) + 10.0; TGeoHMatrix *t2lMatrix = new TGeoHMatrix(); t2lMatrix->RotateZ(sectorAngle); t2lMatrix->MultiplyLeft(&(globMatrix->Inverse())); @@ -266,9 +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; @@ -309,9 +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. @@ -334,7 +356,7 @@ 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 @@ -368,7 +390,7 @@ void AliTRDv1::Init() 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; @@ -434,13 +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; @@ -472,12 +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 @@ -532,17 +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) && @@ -557,7 +580,7 @@ void AliTRDv1::StepManagerGeant() // entering the drift volume if ((fTR) && (TMath::Abs(gMC->TrackPid()) == kPdgElectron)) { - CreateTRhit(det); + CreateTRhit(det); } } @@ -586,7 +609,7 @@ void AliTRDv1::StepManagerGeant() pid = 0; } else { - pid = processes[nofprocesses-1]; + pid = processes[nofprocesses-1]; } // Generate Edep according to GEANT parametrisation @@ -632,7 +655,7 @@ 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 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber() @@ -693,11 +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; @@ -728,12 +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 @@ -779,17 +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) && @@ -804,7 +828,7 @@ void AliTRDv1::StepManagerErmilova() // entering the drift volume if ((fTR) && (TMath::Abs(gMC->TrackPid()) == kPdgElectron)) { - CreateTRhit(det); + CreateTRhit(det); } } @@ -825,7 +849,7 @@ 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 if (drRegion) { @@ -898,14 +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]; @@ -927,13 +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 @@ -971,17 +995,17 @@ 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 Int_t trkStat = 0; @@ -1000,7 +1024,7 @@ void AliTRDv1::StepManagerFixedStep() // entering the drift volume if ((fTR) && (TMath::Abs(gMC->TrackPid()) == kPdgElectron)) { - CreateTRhit(det); + CreateTRhit(det); } } @@ -1018,7 +1042,7 @@ void AliTRDv1::StepManagerFixedStep() // Calculate the charge according to GEANT Edep // Create a new dEdx hit 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()