X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=PHOS%2FAliPHOSv1.cxx;h=6155bacd7490d72f4353fc9c58aba01a452d9883;hb=e8541476a6fef106f14bb0aa5e7f11d3d5495bed;hp=647df5e780d40c44f6f0ec427be27578a16a0ce5;hpb=bc9ab547f589d8eed1f3d3c36f7c95625644d472;p=u%2Fmrichter%2FAliRoot.git diff --git a/PHOS/AliPHOSv1.cxx b/PHOS/AliPHOSv1.cxx index 647df5e780d..6155bacd749 100644 --- a/PHOS/AliPHOSv1.cxx +++ b/PHOS/AliPHOSv1.cxx @@ -1,303 +1,647 @@ -///////////////////////////////////////////////////////// -// Manager and hits classes for set:PHOS version 1 // -///////////////////////////////////////////////////////// - +/************************************************************************** + * 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. * + **************************************************************************/ + +/* $Id$ */ + +//_________________________________________________________________________ +// Implementation version v1 of PHOS Manager class +//--- +// Layout EMC + PPSD has name GPS2: +// Produces cumulated hits +//--- +// Layout EMC + CPV has name IHEP: +// Produces hits for CPV, cumulated hits +//--- +// Layout EMC + CPV + PPSD has name GPS: +// Produces hits for CPV, cumulated hits +//--- +//*-- Author: Yves Schutz (SUBATECH) + + // --- ROOT system --- -#include "TH1.h" -#include "TRandom.h" -#include "TFile.h" -#include "TTree.h" + #include "TBRIK.h" #include "TNode.h" -#include "TMath.h" +#include "TRandom.h" +#include "TTree.h" +#include "TParticle.h" + +// --- Standard library --- + +#include +#include +#include + +// --- AliRoot header files --- -// --- galice header files --- #include "AliPHOSv1.h" +#include "AliPHOSHit.h" +#include "AliPHOSCPVDigit.h" #include "AliRun.h" -#include "TGeant3.h" +#include "AliConst.h" +#include "AliMC.h" +#include "AliPHOSGeometry.h" +#include "AliPHOSQAIntCheckable.h" +#include "AliPHOSQAFloatCheckable.h" +#include "AliPHOSQAMeanChecker.h" ClassImp(AliPHOSv1) -//______________________________________________________________________________ - - -AliPHOSv1::AliPHOSv1() : AliPHOS() +//____________________________________________________________________________ +AliPHOSv1::AliPHOSv1(): +AliPHOSv0() { -} - -//______________________________________________________________________________ + // default ctor: initialze data memebers + fQAHitsMul = 0 ; + fQAHitsMulB = 0 ; + fQATotEner = 0 ; + fQATotEnerB = 0 ; + + fLightYieldMean = 0. ; + fIntrinsicPINEfficiency = 0. ; + fLightYieldAttenuation = 0. ; + fRecalibrationFactor = 0. ; + fElectronsPerGeV = 0. ; + fAPDGain = 0. ; + fLightFactor = 0. ; + fAPDFactor = 0. ; -AliPHOSv1::AliPHOSv1(const char *name, const char *title) - : AliPHOS(name, title) -{ } - -//___________________________________________ -void AliPHOSv1::CreateGeometry() -{ - AliMC* pMC = AliMC::GetMC(); - - AliPHOS *PHOS_tmp = (AliPHOS*)gAlice->GetModule("PHOS"); - if( NULL==PHOS_tmp ) - { - printf("There isn't PHOS detector!\n"); - return; +//____________________________________________________________________________ +AliPHOSv1::AliPHOSv1(const char *name, const char *title): + AliPHOSv0(name,title) +{ + // + // We store hits : + // - fHits (the "normal" one), which retains the hits associated with + // the current primary particle being tracked + // (this array is reset after each primary has been tracked). + // + + + + // We do not want to save in TreeH the raw hits + // But save the cumulated hits instead (need to create the branch myself) + // It is put in the Digit Tree because the TreeH is filled after each primary + // and the TreeD at the end of the event (branch is set in FinishEvent() ). + + fHits= new TClonesArray("AliPHOSHit",1000) ; + gAlice->AddHitList(fHits) ; + + fNhits = 0 ; + + fIshunt = 2 ; // All hits are associated with primary particles + + //Photoelectron statistics: + // The light yield is a poissonian distribution of the number of + // photons created in the PbWo4 crystal, calculated using following formula + // NumberOfPhotons = EnergyLost * LightYieldMean* APDEfficiency * + // exp (-LightYieldAttenuation * DistanceToPINdiodeFromTheHit); + // LightYieldMean is parameter calculated to be over 47000 photons per GeV + // APDEfficiency is 0.02655 + // k_0 is 0.0045 from Valery Antonenko + // The number of electrons created in the APD is + // NumberOfElectrons = APDGain * LightYield + // The APD Gain is 300 + fLightYieldMean = 47000; + fIntrinsicPINEfficiency = 0.02655 ; //APD= 0.1875/0.1271 * 0.018 (PIN) + fLightYieldAttenuation = 0.0045 ; + fRecalibrationFactor = 13.418/ fLightYieldMean ; + fElectronsPerGeV = 2.77e+8 ; + fAPDGain = 300. ; + fLightFactor = fLightYieldMean * fIntrinsicPINEfficiency ; + fAPDFactor = (fRecalibrationFactor/100.) * fAPDGain ; + + + Int_t nb = GetGeometry()->GetNModules() ; + + // create checkables + fQAHitsMul = new AliPHOSQAIntCheckable("HitsM") ; + fQATotEner = new AliPHOSQAFloatCheckable("TotEn") ; + fQAHitsMulB = new TClonesArray("AliPHOSQAIntCheckable",nb) ; + fQAHitsMulB->SetOwner() ; + fQATotEnerB = new TClonesArray("AliPHOSQAFloatCheckable", nb); + fQATotEnerB->SetOwner() ; + char tempo[20] ; + Int_t i ; + for ( i = 0 ; i < nb ; i++ ) { + sprintf(tempo, "HitsMB%d", i+1) ; + new( (*fQAHitsMulB)[i]) AliPHOSQAIntCheckable(tempo) ; + sprintf(tempo, "TotEnB%d", i+1) ; + new( (*fQATotEnerB)[i] ) AliPHOSQAFloatCheckable(tempo) ; } -// AliPHOS &PHOS = *PHOS_tmp; - - ////////////////////////////////////////////////////////////////////////////// - - Int_t rotation_matrix_number=0; - Float_t par[11], - x,y,z; - - const float cell_length = GetCrystalLength()+GetAirThickness()+GetWrapThickness()+GetPIN_Length(), - cell_side_size = GetCrystalSideSize()+2*GetAirThickness()+2*GetWrapThickness(), -// cell_angle = 180/kPI * 2 * atan(cell_side_size/2 / GetRadius()), // radians - cradle_thikness = cell_length + GetCPV_Thickness() + GetCPV_PHOS_Distance(), - distance_to_CPV = GetRadius() - GetCPV_Thickness() - GetCPV_PHOS_Distance(); - - ////////////////////////////////////////////////////////////////////////////// - // CELL volume and subvolumes creation - ////////////////////////////////////////////////////////////////////////////// - - par[0] = GetCrystalSideSize()/2 + GetWrapThickness(); - par[1] = GetCrystalSideSize()/2 + GetWrapThickness(); - par[2] = GetCrystalLength() /2 + GetWrapThickness()/2; - pMC->Gsvolu("WRAP","BOX ",GetPHOS_IDTMED_Tyvek(),par,3); - - par[0] = GetCrystalSideSize()/2; - par[1] = GetCrystalSideSize()/2; - par[2] = GetCrystalLength()/2; - pMC->Gsvolu("CRST","BOX ",GetPHOS_IDTMED_PbWO4(),par,3); - - // PIN - par[0] = GetPIN_SideSize()/2; - par[1] = GetPIN_SideSize()/2; - par[2] = GetPIN_Length()/2; - pMC->Gsvolu("PIN ","BOX ",GetPHOS_IDTMED_PIN(),par,3); - - ////////////////////////////////////////////////////////////////////////////// - // CRADLE,CPV creation. - ////////////////////////////////////////////////////////////////////////////// - - par[0] = cell_side_size/2 * GetNz(); - par[1] = cell_side_size/2 * GetNphi(); - par[2] = cradle_thikness/2; - pMC->Gsvolu("PHOS","BOX ",GetPHOS_IDTMED_AIR(),par,3); - -//par[0] : the same as above -//par[1] : the same as above - par[2] = GetCPV_Thickness()/2; - pMC->Gsvolu("CPV ","BOX ",GetPHOS_IDTMED_CPV(),par,3); - - x = 0; - y = 0; - z = (cell_length+GetCPV_PHOS_Distance())/2; - pMC->Gspos("CPV ",1,"PHOS",x,y,z,0,"ONLY"); - - par[0] = cell_side_size/2 * GetNz(); - par[1] = cell_side_size/2 * GetNphi(); - par[2] = cell_length/2; - pMC->Gsvolu("CRS0","BOX ",GetPHOS_IDTMED_AIR(),par,3); - - x = 0; - y = 0; - z = -(cradle_thikness-cell_length)/2; - pMC->Gspos("CRS0",1,"PHOS",x,y,z,0,"ONLY"); - - pMC->Gsdvn("CRS1","CRS0",GetNphi(),2); - pMC->Gsdvn("CELL","CRS1",GetNz() ,1); - - ////////////////////////////////////////////////////////////////////////////// - // CELL creation - ////////////////////////////////////////////////////////////////////////////// - - x = 0; - y = 0; - z = -GetWrapThickness()/2; - pMC->Gspos("CRST",1,"WRAP",x,y,z,0,"ONLY"); - - x = 0; - y = 0; - z = GetPIN_Length()/2; - pMC->Gspos("WRAP",1,"CELL",x,y,z,0,"ONLY"); - - x = 0; - y = 0; - z = -GetCrystalLength()/2-GetWrapThickness()/2; - pMC->Gspos("PIN ",1,"CELL",x,y,z,0,"ONLY"); - - ////////////////////////////////////////////////////////////////////////////// - // CELL has been created. - ////////////////////////////////////////////////////////////////////////////// - -// int n=0; -// z = -(GetCPV_Thickness()+GetCPV_PHOS_Distance())/2; -// -// for( int iy=0; iyGspos("CELL",++n,"PHOS",x,y,z,0,"ONLY"); -// } -// } - - ////////////////////////////////////////////////////////////////////////////// - // End of CRADLE creation. - ////////////////////////////////////////////////////////////////////////////// - - - ////////////////////////////////////////////////////////////////////////////// - // PHOS creation - ////////////////////////////////////////////////////////////////////////////// - - for( int i=0; iGspos("PHOS",i+1,"ALIC",x,y,z,rotation_matrix_number,"ONLY"); - - GetCradleAngle(i) = cradle_angle_pos; -// -// int n = PHOS.fCradles->GetEntries(); -// PHOS.fCradles->Add(new AliPHOSCradle( 1, // geometry. -// GetCrystalSideSize (), -// GetCrystalLength (), -// GetWrapThickness (), -// GetAirThickness (), -// GetPIN_SideSize (), -// GetPIN_Length (), -// GetRadius (), -// GetCPV_Thickness (), -// GetCPV_PHOS_Distance (), -// GetNz (), -// GetNphi (), -// cradle_angle_pos )); -// -// if( n+1 != PHOS.fCradles->GetEntries() || -// NULL == PHOS.fCradles->At(n) ) -// { -// cout << " Can not create or add AliPHOSCradle.\n"; -// exit(1); -// } + + AliPHOSQAMeanChecker * hmc = new AliPHOSQAMeanChecker("HitsMul", 100. ,25.) ; + AliPHOSQAMeanChecker * emc = new AliPHOSQAMeanChecker("TotEner", 10. ,5.) ; + AliPHOSQAMeanChecker * bhmc = new AliPHOSQAMeanChecker("HitsMulB", 100. ,5.) ; + AliPHOSQAMeanChecker * bemc = new AliPHOSQAMeanChecker("TotEnerB", 2. ,.5) ; + + // associate checkables and checkers + fQAHitsMul->AddChecker(hmc) ; + fQATotEner->AddChecker(emc) ; + for ( i = 0 ; i < nb ; i++ ) { + (static_cast((*fQAHitsMulB)[i]))->AddChecker(bhmc) ; + (static_cast((*fQATotEnerB)[i]))->AddChecker(bemc) ; } - AddPHOSCradles(); - ////////////////////////////////////////////////////////////////////////////// - // All is done. - // Print some information. - ////////////////////////////////////////////////////////////////////////////// } -void AliPHOSv1::StepManager() +//____________________________________________________________________________ +AliPHOSv1::~AliPHOSv1() { - static Bool_t inwold=0; // Status of previous ctrak->inwvol - AliMC *MC = AliMC::GetMC(); - Int_t copy; - - int cradle_number, cell_Z, cell_Phi; // Variables that describe cell position. - - if( MC->GetMedium() == GetPHOS_IDTMED_PIN() && (MC->TrackInside() || MC->TrackExiting()==2) && inwold && MC->TrackCharge()!=0 ) - { - // GEANT particle just have entered into PIN diode. - - AliPHOS &PHOS = *(AliPHOS*)gAlice->GetModule("PHOS"); - - MC->CurrentVolOff(4,0,copy); - cradle_number = copy-1; - MC->CurrentVolOff(1,0,copy); - cell_Z = copy-1; - MC->CurrentVolOff(2,0,copy); - cell_Phi = copy-1; -/* - cradle_number = cvolu->number[cvolu->nlevel-5]-1; - cell_Z = cvolu->number[cvolu->nlevel-2]-1; - cell_Phi = cvolu->number[cvolu->nlevel-3]-1; -*/ - - TH2S &h = PHOS.GetCradle(cradle_number).fChargedTracksInPIN; - h.AddBinContent(h.GetBin(cell_Z,cell_Phi)); + // dtor + + if ( fHits) { + fHits->Delete() ; + delete fHits ; + fHits = 0 ; } + + delete fTreeQA ; - ////////////////////////////////////////////////////////////////////////////// - - if( MC->GetMedium() == GetPHOS_IDTMED_PbWO4() ) - { - // GEANT particle into crystal. - - AliPHOS &PHOS = *(AliPHOS*)gAlice->GetModule("PHOS"); - - MC->CurrentVolOff(5,0,copy); - cradle_number = copy-1; - MC->CurrentVolOff(2,0,copy); - cell_Z = copy-1; - MC->CurrentVolOff(3,0,copy); - cell_Phi = copy-1; -/* - cradle_number = cvolu->number[cvolu->nlevel-6]-1; - cell_Z = cvolu->number[cvolu->nlevel-3]-1; - cell_Phi = cvolu->number[cvolu->nlevel-4]-1; -*/ - TH2F &h = PHOS.GetCradle(cradle_number).fCellEnergy; - h.AddBinContent(h.GetBin(cell_Z,cell_Phi),MC->Edep()); + if ( fQAHitsMulB ) { + fQAHitsMulB->Delete() ; + delete fQAHitsMulB ; } - ////////////////////////////////////////////////////////////////////////////// + if ( fQATotEnerB ) { + fQATotEnerB->Delete() ; + delete fQATotEnerB ; + } + +} - if( MC->GetMedium()==GetPHOS_IDTMED_CPV() && (MC->TrackInside() || MC->TrackExiting()) && inwold ) - { - // GEANT particle just have entered into CPV detector. +//____________________________________________________________________________ +void AliPHOSv1::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t Id, Float_t * hits) +{ + // Add a hit to the hit list. + // A PHOS hit is the sum of all hits in a single crystal from one primary and within some time gate + + Int_t hitCounter ; + AliPHOSHit *newHit ; + AliPHOSHit *curHit ; + Bool_t deja = kFALSE ; + AliPHOSGeometry * geom = GetGeometry() ; + + newHit = new AliPHOSHit(shunt, primary, tracknumber, Id, hits) ; + + for ( hitCounter = fNhits-1 ; hitCounter >= 0 && !deja ; hitCounter-- ) { + curHit = dynamic_cast((*fHits)[hitCounter]) ; + if(curHit->GetPrimary() != primary) break ; + // We add hits with the same primary, while GEANT treats primaries succesively + if( *curHit == *newHit ) { + *curHit + *newHit ; + deja = kTRUE ; + } + } + + if ( !deja ) { + new((*fHits)[fNhits]) AliPHOSHit(*newHit) ; + // get the block Id number + Int_t relid[4] ; + geom->AbsToRelNumbering(Id, relid) ; + // and fill the relevant QA checkable (only if in PbW04) + if ( relid[1] == 0 ) { + fQAHitsMul->Update(1) ; + (static_cast((*fQAHitsMulB)[relid[0]-1]))->Update(1) ; + } + fNhits++ ; + } - AliPHOS &PHOS = *(AliPHOS*)gAlice->GetModule("PHOS"); + delete newHit; +} - MC->CurrentVolOff(1,0,cradle_number); - cradle_number--; -// cradle_number = cvolu->number[cvolu->nlevel-2]-1; +//____________________________________________________________________________ +void AliPHOSv1::FinishPrimary() +{ + // called at the end of each track (primary) by AliRun + // hits are reset for each new track + // accumulate the total hit-multiplicity +// if ( fQAHitsMul ) +// fQAHitsMul->Update( fHits->GetEntriesFast() ) ; - // Save CPV x,y hits position of charged particles. +} - AliPHOSCradle &cradle = PHOS.GetCradle(cradle_number); +//____________________________________________________________________________ +void AliPHOSv1::FinishEvent() +{ + // called at the end of each event by AliRun + // accumulate the hit-multiplicity and total energy per block + // if the values have been updated check it + + if ( fQATotEner ) { + if ( fQATotEner->HasChanged() ) { + fQATotEner->CheckMe() ; + fQATotEner->Reset() ; + } + } + + Int_t i ; + if ( fQAHitsMulB && fQATotEnerB ) { + for (i = 0 ; i < GetGeometry()->GetNModules() ; i++) { + AliPHOSQAIntCheckable * ci = static_cast((*fQAHitsMulB)[i]) ; + AliPHOSQAFloatCheckable* cf = static_cast((*fQATotEnerB)[i]) ; + if ( ci->HasChanged() ) { + ci->CheckMe() ; + ci->Reset() ; + } + if ( cf->HasChanged() ) { + cf->CheckMe() ; + cf->Reset() ; + } + } + } + + // check the total multiplicity + + if ( fQAHitsMul ) { + if ( fQAHitsMul->HasChanged() ) { + fQAHitsMul->CheckMe() ; + fQAHitsMul->Reset() ; + } + } +} +//____________________________________________________________________________ +void AliPHOSv1::StepManager(void) +{ + // Accumulates hits as long as the track stays in a single crystal or CPV gas Cell + + Int_t relid[4] ; // (box, layer, row, column) indices + Int_t absid ; // absolute cell ID number + Float_t xyzte[5]={-1000.,-1000.,-1000.,0.,0.} ; // position wrt MRS, time and energy deposited + TLorentzVector pos ; // Lorentz vector of the track current position + Int_t copy ; + + Int_t tracknumber = gAlice->CurrentTrack() ; + Int_t primary = gAlice->GetPrimary( gAlice->CurrentTrack() ); + TString name = GetGeometry()->GetName() ; + + Int_t moduleNumber ; + + if( gMC->CurrentVolID(copy) == gMC->VolId("PCPQ") && + (gMC->IsTrackEntering() ) && + gMC->TrackCharge() != 0) { + + gMC -> TrackPosition(pos); + + Float_t xyzm[3], xyzd[3] ; + Int_t i; + for (i=0; i<3; i++) xyzm[i] = pos[i]; + gMC -> Gmtod (xyzm, xyzd, 1); // transform coordinate from master to daughter system + + Float_t xyd[3]={0,0,0} ; //local position of the entering + xyd[0] = xyzd[0]; + xyd[1] =-xyzd[2]; + xyd[2] =-xyzd[1]; + + // Current momentum of the hit's track in the local ref. system + TLorentzVector pmom ; //momentum of the particle initiated hit + gMC -> TrackMomentum(pmom); + Float_t pm[3], pd[3]; + for (i=0; i<3; i++) + pm[i] = pmom[i]; + + gMC -> Gmtod (pm, pd, 2); // transform 3-momentum from master to daughter system + pmom[0] = pd[0]; + pmom[1] =-pd[1]; + pmom[2] =-pd[2]; + + // Digitize the current CPV hit: + + // 1. find pad response and + gMC->CurrentVolOffID(3,moduleNumber); + moduleNumber--; + + TClonesArray *cpvDigits = new TClonesArray("AliPHOSCPVDigit",0); // array of digits for current hit + CPVDigitize(pmom,xyd,moduleNumber,cpvDigits); + + Float_t xmean = 0; + Float_t zmean = 0; + Float_t qsum = 0; + Int_t idigit,ndigits; + + // 2. go through the current digit list and sum digits in pads + + ndigits = cpvDigits->GetEntriesFast(); + for (idigit=0; idigit(cpvDigits->UncheckedAt(idigit)); + Float_t x1 = cpvDigit1->GetXpad() ; + Float_t z1 = cpvDigit1->GetYpad() ; + for (Int_t jdigit=idigit+1; jdigit(cpvDigits->UncheckedAt(jdigit)); + Float_t x2 = cpvDigit2->GetXpad() ; + Float_t z2 = cpvDigit2->GetYpad() ; + if (x1==x2 && z1==z2) { + Float_t qsum = cpvDigit1->GetQpad() + cpvDigit2->GetQpad() ; + cpvDigit2->SetQpad(qsum) ; + cpvDigits->RemoveAt(idigit) ; + } + } + } + cpvDigits->Compress() ; + + // 3. add digits to temporary hit list fTmpHits + + ndigits = cpvDigits->GetEntriesFast(); + for (idigit=0; idigit(cpvDigits->UncheckedAt(idigit)); + relid[0] = moduleNumber + 1 ; // CPV (or PHOS) module number + relid[1] =-1 ; // means CPV + relid[2] = cpvDigit->GetXpad() ; // column number of a pad + relid[3] = cpvDigit->GetYpad() ; // row number of a pad + + // get the absolute Id number + GetGeometry()->RelToAbsNumbering(relid, absid) ; + + // add current digit to the temporary hit list + + xyzte[3] = gMC->TrackTime() ; + xyzte[4] = cpvDigit->GetQpad() ; // amplitude in a pad + primary = -1; // No need in primary for CPV + AddHit(fIshunt, primary, tracknumber, absid, xyzte); + + if (cpvDigit->GetQpad() > 0.02) { + xmean += cpvDigit->GetQpad() * (cpvDigit->GetXpad() + 0.5); + zmean += cpvDigit->GetQpad() * (cpvDigit->GetYpad() + 0.5); + qsum += cpvDigit->GetQpad(); + } + } + if (cpvDigits) { + cpvDigits->Delete(); + delete cpvDigits; + cpvDigits=0; + } + } - Float_t xyz[3]; - MC->TrackPosition(xyz); - TVector3 p(xyz[0],xyz[1],xyz[2]),v; + + + if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) { // We are inside a PBWO crystal + + gMC->TrackPosition(pos) ; + xyzte[0] = pos[0] ; + xyzte[1] = pos[1] ; + xyzte[2] = pos[2] ; + + Float_t global[3], local[3] ; + global[0] = pos[0] ; + global[1] = pos[1] ; + global[2] = pos[2] ; + Float_t lostenergy = gMC->Edep(); + + //Put in the TreeK particle entering PHOS and all its parents + if ( gMC->IsTrackEntering() ){ + Float_t xyzd[3] ; + gMC -> Gmtod (xyzte, xyzd, 1); // transform coordinate from master to daughter system + if (xyzd[1] > GetGeometry()->GetCrystalSize(1)/2-0.002 || + xyzd[1] < -GetGeometry()->GetCrystalSize(1)/2+0.002) { + TParticle * part = 0 ; + Int_t parent = gAlice->CurrentTrack() ; + while ( parent != -1 ) { + part = gAlice->Particle(parent) ; + part->SetBit(kKeepBit); + parent = part->GetFirstMother() ; + } + } + } + if ( lostenergy != 0 ) { // Track is inside the crystal and deposits some energy + xyzte[3] = gMC->TrackTime() ; + + gMC->CurrentVolOffID(10, moduleNumber) ; // get the PHOS module number ; + + Int_t strip ; + gMC->CurrentVolOffID(3, strip); + Int_t cell ; + gMC->CurrentVolOffID(2, cell); + + Int_t row = 1 + GetGeometry()->GetNZ() - strip % GetGeometry()->GetNZ() ; + Int_t col = (Int_t) TMath::Ceil((Double_t) strip/GetGeometry()->GetNZ()) -1 ; + + absid = (moduleNumber-1)*GetGeometry()->GetNCristalsInModule() + + row + (col*GetGeometry()->GetEMCAGeometry()->GetNCellsInStrip() + cell-1)*GetGeometry()->GetNZ() ; + + gMC->Gmtod(global, local, 1) ; + + //Calculates the light yield, the number of photons produced in the + //crystal + Float_t lightYield = gRandom->Poisson(fLightFactor * lostenergy * + exp(-fLightYieldAttenuation * + (local[1]+GetGeometry()->GetCrystalSize(1)/2.0 )) + ) ; + + //Calculates de energy deposited in the crystal + xyzte[4] = fAPDFactor * lightYield ; + + // add current hit to the hit list + //cout << "AliPHOSv1::StepManager " << primary << " " << tracknumber << endl ; + AddHit(fIshunt, primary,tracknumber, absid, xyzte); + + // fill the relevant QA Checkables + fQATotEner->Update( xyzte[4] ) ; // total energy in PHOS + (static_cast((*fQATotEnerB)[moduleNumber-1]))->Update( xyzte[4] ) ; // energy in this block + + } // there is deposited energy + } // we are inside a PHOS Xtal + +} - float x,y,l; - float R = cradle.GetRadius() - cradle.GetCPV_PHOS_Distance() - cradle.GetCPV_Thikness(); - cradle.GetXY(p,v,R,x,y,l); - if( PHOS.fDebugLevel>0 ) - if( l<0 ) - printf("PHOS_STEP: warning: negative distance to CPV!! %f\n", l); +//____________________________________________________________________________ +void AliPHOSv1::CPVDigitize (TLorentzVector p, Float_t *zxhit, Int_t moduleNumber, TClonesArray *cpvDigits) +{ + // ------------------------------------------------------------------------ + // Digitize one CPV hit: + // On input take exact 4-momentum p and position zxhit of the hit, + // find the pad response around this hit and + // put the amplitudes in the pads into array digits + // + // Author: Yuri Kharlov (after Serguei Sadovsky) + // 2 October 2000 + // ------------------------------------------------------------------------ + + const Float_t kCelWr = GetGeometry()->GetPadSizePhi()/2; // Distance between wires (2 wires above 1 pad) + const Float_t kDetR = 0.1; // Relative energy fluctuation in track for 100 e- + const Float_t kdEdx = 4.0; // Average energy loss in CPV; + const Int_t kNgamz = 5; // Ionization size in Z + const Int_t kNgamx = 9; // Ionization size in Phi + const Float_t kNoise = 0.03; // charge noise in one pad + + Float_t rnor1,rnor2; + + // Just a reminder on axes notation in the CPV module: + // axis Z goes along the beam + // axis X goes across the beam in the module plane + // axis Y is a normal to the module plane showing from the IP + + Float_t hitX = zxhit[0]; + Float_t hitZ =-zxhit[1]; + Float_t pX = p.Px(); + Float_t pZ =-p.Pz(); + Float_t pNorm = p.Py(); + Float_t eloss = kdEdx; + +// cout << "CPVDigitize: YVK : "<GetCPVGasThickness(); + Float_t dXY = pX/pNorm * GetGeometry()->GetCPVGasThickness(); + gRandom->Rannor(rnor1,rnor2); + eloss *= (1 + kDetR*rnor1) * + TMath::Sqrt((1 + ( pow(dZY,2) + pow(dXY,2) ) / pow(GetGeometry()->GetCPVGasThickness(),2))); + Float_t zhit1 = hitZ + GetGeometry()->GetCPVActiveSize(1)/2 - dZY/2; + Float_t xhit1 = hitX + GetGeometry()->GetCPVActiveSize(0)/2 - dXY/2; + Float_t zhit2 = zhit1 + dZY; + Float_t xhit2 = xhit1 + dXY; + + Int_t iwht1 = (Int_t) (xhit1 / kCelWr); // wire (x) coordinate "in" + Int_t iwht2 = (Int_t) (xhit2 / kCelWr); // wire (x) coordinate "out" + + Int_t nIter; + Float_t zxe[3][5]; + if (iwht1==iwht2) { // incline 1-wire hit + nIter = 2; + zxe[0][0] = (zhit1 + zhit2 - dZY*0.57735) / 2; + zxe[1][0] = (iwht1 + 0.5) * kCelWr; + zxe[2][0] = eloss/2; + zxe[0][1] = (zhit1 + zhit2 + dZY*0.57735) / 2; + zxe[1][1] = (iwht1 + 0.5) * kCelWr; + zxe[2][1] = eloss/2; + } + else if (TMath::Abs(iwht1-iwht2) != 1) { // incline 3-wire hit + nIter = 3; + Int_t iwht3 = (iwht1 + iwht2) / 2; + Float_t xwht1 = (iwht1 + 0.5) * kCelWr; // wire 1 + Float_t xwht2 = (iwht2 + 0.5) * kCelWr; // wire 2 + Float_t xwht3 = (iwht3 + 0.5) * kCelWr; // wire 3 + Float_t xwr13 = (xwht1 + xwht3) / 2; // center 13 + Float_t xwr23 = (xwht2 + xwht3) / 2; // center 23 + Float_t dxw1 = xhit1 - xwr13; + Float_t dxw2 = xhit2 - xwr23; + Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); + Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); + Float_t egm3 = kCelWr / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + kCelWr ); + zxe[0][0] = (dXY*(xwr13-xwht1)/dXY + zhit1 + zhit1) / 2; + zxe[1][0] = xwht1; + zxe[2][0] = eloss * egm1; + zxe[0][1] = (dXY*(xwr23-xwht1)/dXY + zhit1 + zhit2) / 2; + zxe[1][1] = xwht2; + zxe[2][1] = eloss * egm2; + zxe[0][2] = dXY*(xwht3-xwht1)/dXY + zhit1; + zxe[1][2] = xwht3; + zxe[2][2] = eloss * egm3; + } + else { // incline 2-wire hit + nIter = 2; + Float_t xwht1 = (iwht1 + 0.5) * kCelWr; + Float_t xwht2 = (iwht2 + 0.5) * kCelWr; + Float_t xwr12 = (xwht1 + xwht2) / 2; + Float_t dxw1 = xhit1 - xwr12; + Float_t dxw2 = xhit2 - xwr12; + Float_t egm1 = TMath::Abs(dxw1) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) ); + Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) ); + zxe[0][0] = (zhit1 + zhit2 - dZY*egm1) / 2; + zxe[1][0] = xwht1; + zxe[2][0] = eloss * egm1; + zxe[0][1] = (zhit1 + zhit2 + dZY*egm2) / 2; + zxe[1][1] = xwht2; + zxe[2][1] = eloss * egm2; + } - // Store current particle in the list of Cradle particles. - Float_t pmom[4]; - MC->TrackMomentum(pmom); - float Px = pmom[0] * pmom[3], - Py = pmom[1] * pmom[3], - Pz = pmom[2] * pmom[3]; - Int_t Ipart = MC->TrackPid(); + // Finite size of ionization region + + Int_t nCellZ = GetGeometry()->GetNumberOfCPVPadsZ(); + Int_t nCellX = GetGeometry()->GetNumberOfCPVPadsPhi(); + Int_t nz3 = (kNgamz+1)/2; + Int_t nx3 = (kNgamx+1)/2; + cpvDigits->Expand(nIter*kNgamx*kNgamz); + TClonesArray &ldigits = *(static_cast(cpvDigits)); + + for (Int_t iter=0; iterGetPadSizeZ(); + Float_t xcell = xhit / GetGeometry()->GetPadSizePhi(); + if ( zcell<=0 || xcell<=0 || + zcell>=nCellZ || xcell>=nCellX) return; + Int_t izcell = (Int_t) zcell; + Int_t ixcell = (Int_t) xcell; + Float_t zc = zcell - izcell - 0.5; + Float_t xc = xcell - ixcell - 0.5; + for (Int_t iz=1; iz<=kNgamz; iz++) { + Int_t kzg = izcell + iz - nz3; + if (kzg<=0 || kzg>nCellZ) continue; + Float_t zg = (Float_t)(iz-nz3) - zc; + for (Int_t ix=1; ix<=kNgamx; ix++) { + Int_t kxg = ixcell + ix - nx3; + if (kxg<=0 || kxg>nCellX) continue; + Float_t xg = (Float_t)(ix-nx3) - xc; + + // Now calculate pad response + Float_t qpad = CPVPadResponseFunction(qhit,zg,xg); + qpad += kNoise*rnor2; + if (qpad<0) continue; + + // Fill the array with pad response ID and amplitude + new(ldigits[cpvDigits->GetEntriesFast()]) AliPHOSCPVDigit(kxg,kzg,qpad); + } + } + } +} -// TClonesArray &P=cradle.GetParticles(); -// new( P[P.GetEntries()] ) AliPHOSgamma(x,0,y,0,ctrak->getot,0,Px,Py,Pz); - cradle.GetParticles().Add(new AliPHOSgamma(x,y,MC->Etot(),Px,Py,Pz,Ipart)); +//____________________________________________________________________________ +Float_t AliPHOSv1::CPVPadResponseFunction(Float_t qhit, Float_t zhit, Float_t xhit) { + // ------------------------------------------------------------------------ + // Calculate the amplitude in one CPV pad using the + // cumulative pad response function + // Author: Yuri Kharlov (after Serguei Sadovski) + // 3 October 2000 + // ------------------------------------------------------------------------ + + Double_t dz = GetGeometry()->GetPadSizeZ() / 2; + Double_t dx = GetGeometry()->GetPadSizePhi() / 2; + Double_t z = zhit * GetGeometry()->GetPadSizeZ(); + Double_t x = xhit * GetGeometry()->GetPadSizePhi(); + Double_t amplitude = qhit * + (CPVCumulPadResponse(z+dz,x+dx) - CPVCumulPadResponse(z+dz,x-dx) - + CPVCumulPadResponse(z-dz,x+dx) + CPVCumulPadResponse(z-dz,x-dx)); + return (Float_t)amplitude; +} - if( MC->TrackCharge()!=0 ) - cradle.AddCPVHit(x,y); +//____________________________________________________________________________ +Double_t AliPHOSv1::CPVCumulPadResponse(Double_t x, Double_t y) { + // ------------------------------------------------------------------------ + // Cumulative pad response function + // It includes several terms from the CF decomposition in electrostatics + // Note: this cumulative function is wrong since omits some terms + // but the cell amplitude obtained with it is correct because + // these omitting terms cancel + // Author: Yuri Kharlov (after Serguei Sadovski) + // 3 October 2000 + // ------------------------------------------------------------------------ + + const Double_t kA=1.0; + const Double_t kB=0.7; + + Double_t r2 = x*x + y*y; + Double_t xy = x*y; + Double_t cumulPRF = 0; + for (Int_t i=0; i<=4; i++) { + Double_t b1 = (2*i + 1) * kB; + cumulPRF += TMath::Power(-1,i) * TMath::ATan( xy / (b1*TMath::Sqrt(b1*b1 + r2)) ); } - - inwold=MC->TrackEntering(); // Save current status of GEANT variable. + cumulPRF *= kA/(2*TMath::Pi()); + return cumulPRF; }