X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=FMD%2FAliFMDv1.cxx;h=386115768af1796f25089eb21ebb0a78d6fabf5b;hb=6b1e75b2c2b515ac9cc9e6868e30b6e5a8360aed;hp=94c27d71cf2e5e492926c26a574f6bc311c7fc76;hpb=642f15cfce9ebda2ff71a55c5edb8d9bc0c729c4;p=u%2Fmrichter%2FAliRoot.git diff --git a/FMD/AliFMDv1.cxx b/FMD/AliFMDv1.cxx index 94c27d71cf2..386115768af 100644 --- a/FMD/AliFMDv1.cxx +++ b/FMD/AliFMDv1.cxx @@ -12,325 +12,325 @@ * 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 version 0 // -// -//Begin Html -/* - +/** @file AliFMDv1.cxx + @author Christian Holm Christensen + @date Mon Mar 27 12:48:51 2006 + @brief Concrete implementation of FMD detector driver - detailed + version + @ingroup FMD_sim */ -//End Html -// // -// // -////////////////////////////////////////////////////////////////////// - -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "AliFMDdigit.h" -#include "AliFMDhit.h" -#include "AliFMDv0.h" -#include "AliFMDv1.h" -#include "AliMagF.h" -#include "AliRun.h" - +//____________________________________________________________________ +// +// Forward Multiplicity Detector based on Silicon wafers. This class +// contains the base procedures for the Forward Multiplicity detector +// Detector consists of 3 sub-detectors FMD1, FMD2, and FMD3, each of +// which has 1 or 2 rings of silicon sensors. +// This class contains the detailed version of the FMD - that is, hits +// are produced during simulation. +// +// See also the class AliFMD for a more detailed explanation of the +// various componets. +// +#include // ROOT_TVirtualMC +#include // ALIRUN_H +#include // ALIMC_H +// #include // ALILOG_H +#include "AliFMDDebug.h" // Better debug macros +#include "AliFMDv1.h" // ALIFMDV1_H +// #include "AliFMDGeometryBuilder.h" +#include "AliFMDGeometry.h" +#include "AliFMDDetector.h" +#include "AliFMDRing.h" +#include +#include +#include "AliFMDHit.h" + +//____________________________________________________________________ ClassImp(AliFMDv1) +#if 0 + ; // This is here to keep Emacs for indenting the next line +#endif -//-------------------------------------------------------------------- -AliFMDv1::AliFMDv1(const char *name, const char *title): - AliFMD(name,title) -{ - // - // Standart constructor for Forward Multiplicity Detector version 0 - // - fIdSens1=0; - fIdSens2=0; - fIdSens3=0; - fIdSens4=0; - fIdSens5=0; -// setBufferSize(128000); -} -//------------------------------------------------------------------------- -void AliFMDv1::CreateGeometry() -{ - // - // Create the geometry of Forward Multiplicity Detector version 0 - // - //Detector consists of 6 volumes: - // 1st covered pseudorapidity interval from 3.3 to 2.0 - // and placed on 65cm in Z-direction; - // 2nd - from 2.0 to 1.6 and Z=85 cm; - // 3d - the same pseudorapidity interval as the 1st - // but on the other side from the interaction point z=-65cm; - // 4th - simmetricaly with the 2nd : - // pseudorapidity from 2.0 to 1.6, Z=-85cm - // 5th - from 3.6 to 4.7, Z=-270cm - // 6th - from 4.5 to 5.5 , Z=-630cm. - // Each part has 400mkm Si (sensetive area, detector itself), - // 0.75cm of plastic simulated electronics material, - // Al support ring 2cm thickness and 1cm width placed on - // the outer radius of each Si disk; - // - // begin Html - /* - - */ - // +//____________________________________________________________________ +Bool_t +AliFMDv1::VMC2FMD(TLorentzVector& v, UShort_t& detector, + Char_t& ring, UShort_t& sector, UShort_t& strip) const +{ + // Convert VMC coordinates to detector coordinates + TVirtualMC* mc = TVirtualMC::GetMC(); + AliFMDGeometry* fmd = AliFMDGeometry::Instance(); + + // Get track position + mc->TrackPosition(v); + Int_t moduleno; mc->CurrentVolOffID(fmd->GetModuleOff(), moduleno); + Int_t iring; mc->CurrentVolOffID(fmd->GetRingOff(), iring); + ring = Char_t(iring); + Int_t det; mc->CurrentVolOffID(fmd->GetDetectorOff(), det); + detector = det; - Int_t *idtmed = fIdtmed->GetArray(); - - Int_t ifmd; - Int_t idrotm[999]; - Float_t zfmd,par[3]; - char name[5], nameSi[5], nameSector[5], nameRing[5]; - - Float_t rin[6], rout[6],zpos; - - Float_t etain[5]= {3.40, 2.29, 3.68, 2.29, 5.09}; - Float_t etaout[6]={2.01, 1.70, 2.28, 1.70, 3.68}; - // Float_t z[6]={64., 85., -64., -85., -270., -630}; - Float_t z[6]={62.8, 75.2, -83.4, -75.2, -340.}; - Float_t zDet=0.03; - Float_t zElectronic=0.1; - Float_t zSupport=1.; - - Float_t zFMD=1.; -//------------------------------------------------------------------- - // FMD - //------------------------------------------------------------------ - cout<<" !!!!!!!!!!!New FMD geometry !!!!!!!!!"<Gsvolu("GSI","TUBE", idtmed[1], par, 0); - gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0); - gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0); - - for (ifmd =0; ifmd < 5; ifmd++){ - - sprintf(name,"FMD%d",ifmd+1); - sprintf(nameSi,"GSI%d",ifmd+1); - sprintf(nameSector,"GSC%d",ifmd+1); - sprintf(nameRing,"GRN%d",ifmd+1); - - zfmd=TMath::Abs(z[ifmd]); - - AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]); - AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]); - - par[0]=rin[ifmd]; // pipe size - par[1]=rout[ifmd]; - par[2]=zFMD/2; - gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3); - gMC->Gsvolu(nameSi,"TUBE", idtmed[1], par, 0); - - if (z[ifmd] < 0){ - gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],0, "ONLY");} - else { - gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");} - //Silicon detector - par[2]=zDet/2; - zpos=zFMD/2 -par[2]; - gMC->Gsposp(nameSi,ifmd+1,name,0,0,zpos,0, "ONLY",par,3); - - //Granularity - fSectorsSi1=20; - fRingsSi1=256; - fSectorsSi2=40; - fRingsSi2=128; - if(ifmd==1||ifmd==3) - { - gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2); - gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1); - } - else - { - gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2); - gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1); - } - - //Plastic slice for electronics - par[2]=zElectronic/2; - zpos=zpos-zDet/2-par[2]; - gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3); - - //Simple Al support - par[1]=rout[ifmd]; - par[0]=rout[ifmd]-2; - par[2]=zSupport/2; - zpos=zpos-zElectronic/2-par[2]; - // gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3); - - - } - -} + // Get the ring geometry + //Int_t nsec = fmd->GetDetector(detector)->GetRing(ring)->GetNSectors(); + Int_t nstr = fmd->GetDetector(detector)->GetRing(ring)->GetNStrips(); + Double_t lowr = fmd->GetDetector(detector)->GetRing(ring)->GetMinR(); + Double_t theta = fmd->GetDetector(detector)->GetRing(ring)->GetTheta(); + Double_t pitch = fmd->GetDetector(detector)->GetRing(ring)->GetPitch(); + + // Figure out the strip number + Double_t r = TMath::Sqrt(v.X() * v.X() + v.Y() * v.Y()); + Int_t str = Int_t((r - lowr) / pitch); + if (str < 0 || str >= nstr) return kFALSE; + strip = str; + + // Figure out the sector number + Double_t phi = TMath::ATan2(v.Y(), v.X()) * 180. / TMath::Pi(); + if (phi < 0) phi = 360. + phi; + Double_t t = phi - 2 * moduleno * theta; + sector = 2 * moduleno; + if (t < 0 || t > 2 * theta) return kFALSE; + else if (t > theta) sector += 1; + + AliFMDDebug(40, ("<1> Inside an active FMD volume FMD%d%c[%2d,%3d] %s", + detector, ring, sector, strip, mc->CurrentVolPath())); + return kTRUE; +} -//------------------------------------------------------------------------ -void AliFMDv1::CreateMaterials() +//____________________________________________________________________ +Bool_t +AliFMDv1::VMC2FMD(Int_t copy, TLorentzVector& v, + UShort_t& detector, Char_t& ring, + UShort_t& sector, UShort_t& strip) const { - Int_t isxfld = gAlice->Field()->Integ(); - Float_t sxmgmx = gAlice->Field()->Max(); - - // Plastic CH - Float_t aPlastic[2]={1.01,12.01}; - Float_t zPlastic[2]={1,6}; - Float_t wPlastic[2]={1,1}; - Float_t denPlastic=1.03; - // - - //*** Definition Of avaible FMD materials *** - AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999); - AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999); - AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999); - AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic); - - -//** - AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001); - AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001); - AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001); - AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003); - - + // Convert VMC coordinates to detector coordinates + TVirtualMC* mc = TVirtualMC::GetMC(); + AliFMDGeometry* fmd = AliFMDGeometry::Instance(); + + strip = copy - 1; + Int_t sectordiv; mc->CurrentVolOffID(fmd->GetSectorOff(), sectordiv); + if (fmd->GetModuleOff() >= 0) { + Int_t module; mc->CurrentVolOffID(fmd->GetModuleOff(), module); + sector = 2 * module + sectordiv; + } + else + sector = sectordiv; + AliFMDDebug(30, ("Getting ring volume with offset %d -> %s", + fmd->GetRingOff(), + mc->CurrentVolOffName(fmd->GetRingOff()))); + Int_t iring; mc->CurrentVolOffID(fmd->GetRingOff(), iring); + ring = Char_t(iring); + Int_t det; mc->CurrentVolOffID(fmd->GetDetectorOff(), det); + detector = det; + + //Double_t rz = fmd->GetDetector(detector)->GetRingZ(ring); + AliFMDDetector* gdet = fmd->GetDetector(detector); + AliFMDRing* gring = gdet->GetRing(ring); + if (!gring) { + AliFatal(Form("Ring %c not found (volume was %s at offset %d in path %s)", + ring, + mc->CurrentVolOffName(fmd->GetRingOff()), + fmd->GetRingOff(), + mc->CurrentVolPath())); + } + Int_t n = gring->GetNSectors(); +#if 0 + if (rz < 0) { + Int_t s = ((n - sector + n / 2) % n) + 1; + AliFMDDebug(1, ("Recalculating sector to %d (=%d-%d+%d/2%%%d+1 z=%f)", + s, n, sector, n, n, rz)); + sector = s; + } +#endif + if (sector < 1 || sector > n) { + AliWarning(Form("sector # %d out of range (0-%d)", sector-1, n-1)); + return kFALSE; + } + sector--; + // Get track position + mc->TrackPosition(v); + AliFMDDebug(40, ("<2> Inside an active FMD volume FMD%d%c[%2d,%3d] %s", + detector, ring, sector, strip, mc->CurrentVolPath())); + return kTRUE; } -//--------------------------------------------------------------------- -void AliFMDv1::DrawDetector() -{ -// -// Draw a shaded view of the Forward multiplicity detector version 0 -// -//Set ALIC mother transparent -gMC->Gsatt("ALIC","SEEN",0); -// -//Set volumes visible -gMC->Gsatt("FMD1","SEEN",1); -gMC->Gsatt("FMD2","SEEN",1); -gMC->Gsatt("FMD3","SEEN",1); -gMC->Gsatt("FMD4","SEEN",1); -gMC->Gsatt("FMD5","SEEN",1); -// -gMC->Gdopt("hide","on"); -gMC->Gdopt("shad","on"); -gMC->SetClipBox("."); -gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000); -gMC->DefaultRange(); -gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2); -gMC->Gdhead(1111,"Forward multiplicity detector"); -gMC->Gdopt("hide","off"); -} -//------------------------------------------------------------------- -void AliFMDv1::Init() +//____________________________________________________________________ +Bool_t +AliFMDv1::CheckHit(Int_t trackno, Int_t pdg, Float_t absQ, + const TLorentzVector& p, Float_t edep) const { -// Initialises version 0 of the Forward Multiplicity Detector -// -AliFMD::Init(); -fIdSens1=gMC->VolId("GRN1"); -fIdSens2=gMC->VolId("GRN2"); -fIdSens3=gMC->VolId("GRN3"); -fIdSens4=gMC->VolId("GRN4"); -fIdSens5=gMC->VolId("GRN5"); -printf("*** FMD version 1 initialized ***\n"); + // Check that a hit is good + if (AliLog::GetDebugLevel("FMD", "AliFMD") < 5) return kFALSE; + TVirtualMC* mc = TVirtualMC::GetMC(); + Double_t mass = mc->TrackMass(); + Double_t poverm = (mass == 0 ? 0 : p.P() / mass); + + // This `if' is to debug abnormal energy depositions. We trigger on + // p/m approx larger than or equal to a MIP, and a large edep - more + // than 1 keV - a MIP is 100 eV. + if (!(edep > absQ * absQ && poverm > 1)) return kFALSE; + + TArrayI procs; + mc->StepProcesses(procs); + TString processes; + for (Int_t ip = 0; ip < procs.fN; ip++) { + if (ip != 0) processes.Append(","); + processes.Append(TMCProcessName[procs.fArray[ip]]); + } + TDatabasePDG* pdgDB = TDatabasePDG::Instance(); + TParticlePDG* particleType = pdgDB->GetParticle(pdg); + TString pname(particleType ? particleType->GetName() : "???"); + TString what; + if (mc->IsTrackEntering()) what.Append("entering "); + if (mc->IsTrackExiting()) what.Append("exiting "); + if (mc->IsTrackInside()) what.Append("inside "); + if (mc->IsTrackDisappeared()) what.Append("disappeared "); + if (mc->IsTrackStop()) what.Append("stopped "); + if (mc->IsNewTrack()) what.Append("new "); + if (mc->IsTrackAlive()) what.Append("alive "); + if (mc->IsTrackOut()) what.Append("out "); + + Int_t mother = gAlice->GetMCApp()->GetPrimary(trackno); + AliFMDDebug(15, ("Track # %5d deposits a lot of energy\n" + " Volume: %s\n" + " Momentum: (%7.4f,%7.4f,%7.4f)\n" + " PDG: %d (%s)\n" + " Edep: %-14.7f keV (mother %d)\n" + " p/m: %-7.4f/%-7.4f = %-14.7f\n" + " Processes: %s\n" + " What: %s\n", + trackno, mc->CurrentVolPath(), p.X(), p.Y(), p.Z(), + pdg, pname.Data(), edep, mother, p.P(), mass, + poverm, processes.Data(), what.Data())); + return kTRUE; } -//------------------------------------------------------------------- -void AliFMDv1::StepManager() +//____________________________________________________________________ +void +AliFMDv1::StepManager() { + // Member function that is executed each time a hit is made in the + // FMD. None-charged particles are ignored. Dead tracks are + // ignored. // - // Called for every step in the Forward Multiplicity Detector - // - Int_t id,copy,copy1,copy2; - static Float_t hits[9]; - static Int_t vol[3]; - static Float_t de; - TLorentzVector pos; - TLorentzVector mom; - - - TClonesArray &lhits = *fHits; - if(!gMC->IsTrackAlive()) return; // particle has disappeared - - Float_t charge = gMC->TrackCharge(); - if(TMath::Abs(charge)<=0.) return; //take only charged particles - - // printf(" in StepManeger \n"); - id=gMC->CurrentVolID(copy); - //((TGeant3*)gMC)->Gpcxyz(); + // The procedure is as follows: + // + // - IF NOT track is alive THEN RETURN ENDIF + // - IF NOT particle is charged THEN RETURN ENDIF + // - IF NOT volume name is "STRI" or "STRO" THEN RETURN ENDIF + // - Get strip number (volume copy # minus 1) + // - Get phi division number (mother volume copy #) + // - Get module number (grand-mother volume copy #) + // - section # = 2 * module # + phi division # - 1 + // - Get ring Id from volume name + // - Get detector # from grand-grand-grand-mother volume name + // - Get pointer to sub-detector object. + // - Get track position + // - IF track is entering volume AND track is inside real shape THEN + // - Reset energy deposited + // - Get track momentum + // - Get particle ID # + /// - ENDIF + // - IF track is inside volume AND inside real shape THEN + /// - Update energy deposited + // - ENDIF + // - IF track is inside real shape AND (track is leaving volume, + // or it died, or it is stopped THEN + // - Create a hit + // - ENDIF + // + TVirtualMC* mc = TVirtualMC::GetMC(); + if (!mc->IsTrackAlive()) return; + Double_t absQ = TMath::Abs(mc->TrackCharge()); + if (absQ <= 0) return; -// Check the sensetive volume - if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5) - { - if(gMC->IsTrackEntering()) - { - vol[2]=copy; - gMC->CurrentVolOffID(1,copy1); - vol[1]=copy1; - gMC->CurrentVolOffID(2,copy2); - vol[0]=copy2; - - gMC->TrackPosition(pos); - hits[0]=pos[0]; - hits[1]=pos[1]; - hits[2]=pos[2]; - - gMC->TrackMomentum(mom); - hits[3]=mom[0]; - hits[4]=mom[1]; - hits[5]=mom[2]; - - Int_t iPart= gMC->TrackPid(); - Int_t partId=gMC->IdFromPDG(iPart); - hits[7]=partId; - hits[8]=1e9*gMC->TrackTime(); - de=0.; - } - if(gMC->IsTrackInside()){ - de=de+1000.*gMC->Edep(); - } - - if(gMC->IsTrackExiting() - ||gMC->IsTrackDisappeared()|| - gMC->IsTrackStop()) - { - hits[6]=de+1000.*gMC->Edep(); - new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->GetCurrentTrackNumber(),vol,hits); - } // IsTrackExiting() - } + Int_t copy; + Int_t vol = mc->CurrentVolID(copy); + AliFMDGeometry* fmd = AliFMDGeometry::Instance(); + if (!fmd->IsActive(vol)) { + AliFMDDebug(50, ("Not an FMD volume %d '%s'",vol,mc->CurrentVolName())); + return; } -//-------------------------------------------------------------------------- - -void AliFMDv1::Response( Float_t Edep) -{ - Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6; - Float_t chargeOnly=Edep/I; - //Add noise ~500electrons - Int_t charge=500; - if (Edep>0) - charge=Int_t(gRandom->Gaus(chargeOnly,500)); - } - - - - - - + TLorentzVector v; + UShort_t detector; + Char_t ring; + UShort_t sector; + UShort_t strip; + + if (fmd->IsDetailed()) { + if (!VMC2FMD(copy, v, detector, ring, sector, strip)) return; + } else { + if (!VMC2FMD(v, detector, ring, sector, strip)) return; + } + TLorentzVector p; + mc->TrackMomentum(p); + Int_t trackno = gAlice->GetMCApp()->GetCurrentTrackNumber(); + Int_t pdg = mc->TrackPid(); + Double_t edep = mc->Edep() * 1000; // keV + Bool_t isBad = CheckHit(trackno, pdg, absQ, p, edep); + + // Check that the track is actually within the active area + Bool_t entering = mc->IsTrackEntering(); + Bool_t inside = mc->IsTrackInside(); + Bool_t out = (mc->IsTrackExiting()|| mc->IsTrackDisappeared()|| + mc->IsTrackStop()); + // Reset the energy deposition for this track, and update some of + // our parameters. + if (entering) { + AliFMDDebug(15, ("Track # %8d entering active FMD volume %s: " + "Edep=%f (%f,%f,%f)", trackno, mc->CurrentVolPath(), + edep, v.X(), v.Y(), v.Z())); + fCurrentP = p; + fCurrentV = v; + fCurrentDeltaE = edep; + fCurrentPdg = pdg; // mc->IdFromPDG(pdg); + } + // If the track is inside, then update the energy deposition + if (inside && fCurrentDeltaE >= 0) { + fCurrentDeltaE += edep; + AliFMDDebug(15, ("Track # %8d inside active FMD volume %s: Edep=%f, " + "Accumulated Edep=%f (%f,%f,%f)", trackno, + mc->CurrentVolPath(), edep, fCurrentDeltaE, + v.X(), v.Y(), v.Z())); + } + // The track exits the volume, or it disappeared in the volume, or + // the track is stopped because it no longer fulfills the cuts + // defined, then we create a hit. + if (out) { + if (fCurrentDeltaE >= 0) { + fCurrentDeltaE += edep; + AliFMDDebug(15, ("Track # %8d exiting active FMD volume %s: Edep=%g, " + "Accumulated Edep=%g (%f,%f,%f)", trackno, + mc->CurrentVolPath(), edep, fCurrentDeltaE, + v.X(), v.Y(), v.Z())); + TVector3 cur(v.Vect()); + cur -= fCurrentV.Vect(); + Double_t len = cur.Mag(); + AliFMDHit* h = + AddHitByFields(trackno, detector, ring, sector, strip, + fCurrentV.X(), fCurrentV.Y(), fCurrentV.Z(), + fCurrentP.X(), fCurrentP.Y(), fCurrentP.Z(), + fCurrentDeltaE, fCurrentPdg, fCurrentV.T(), + len, mc->IsTrackDisappeared()||mc->IsTrackStop()); + // Add a copy + if (isBad && fBad) { + new ((*fBad)[fBad->GetEntries()]) AliFMDHit(*h); + } + // Check the geometry that we can get back the coordinates. +#ifdef CHECK_TRANS + Double_t x, y, z; + fmd->Detector2XYZ(detector, ring, sector, strip, x, y ,z); + AliFMDDebug(1, ("Hit at (%f,%f,%f), geometry says (%f,%f,%f)", + fCurrentV.X(), fCurrentV.Y(), fCurrentV.Z(), x, y, z)); +#endif + } + fCurrentDeltaE = -1; + } +} +//___________________________________________________________________ +// +// EOF +//