#include "TBRIK.h"
#include "TNode.h"
#include "TRandom.h"
+#include "TTree.h"
// --- Standard library ---
#include "AliPHOSReconstructioner.h"
#include "AliRun.h"
#include "AliConst.h"
+#include "AliMC.h"
ClassImp(AliPHOSv1)
{
// ctor
fNTmpHits = 0 ;
- fTmpHits = 0 ;
+ fTmpHits = 0 ;
+
+ // Create an empty array of AliPHOSCPVModule to satisfy
+ // AliPHOSv1::Streamer when reading root file
+
+ if ( NULL==(fCPVModules=new TClonesArray("AliPHOSCPVModule",0)) ) {
+ Error("AliPHOSv1","Can not create array of CPV modules");
+ exit(1);
+ }
+
}
//____________________________________________________________________________
AliPHOSv1::AliPHOSv1(const char *name, const char *title):
- AliPHOSv0(name,title)
+AliPHOSv0(name,title)
{
// ctor : title is used to identify the layout
- // GPS2 = 5 modules (EMC + PPSD)
+ // GPS2 = 5 modules (EMC + PPSD)
+ // IHEP = 5 modules (EMC + CPV )
// We use 2 arrays of hits :
//
// - fHits (the "normal" one), which retains the hits associated with
//
// - fTmpHits, which retains all the hits of the current event. It
// is used for the digitization part.
-
+
fPinElectronicNoise = 0.010 ;
- fDigitThreshold = 1. ; // 1 GeV
+ fDigitThreshold = 0.1 ; // 1 GeV
// 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() ).
+ // and the TreeD at the end of the event (branch is set in FinishEvent() ).
fTmpHits= new TClonesArray("AliPHOSHit",1000) ;
fDigits = new TClonesArray("AliPHOSDigit",1000) ;
-
fIshunt = 1 ; // All hits are associated with primary particles
-
+
+ // Create array of CPV modules for the IHEP's version of CPV
+
+ if ( strcmp(fGeom->GetName(),"IHEP") == 0 ) {
+ // Create array of AliPHOSCPVmodule of the size of PHOS modules number
+
+ if ( NULL==(fCPVModules=new TClonesArray("AliPHOSCPVModule",fGeom->GetNModules())) ) {
+ Error("AliPHOSv1","Can not create array of CPV modules");
+ exit(1);
+ }
+ TClonesArray &lcpvmodule = *fCPVModules;
+ for (Int_t i=0; i<fGeom->GetNModules(); i++) new(lcpvmodule[i]) AliPHOSCPVModule();
+ }
+ else {
+ // Create an empty array of AliPHOSCPVModule to satisfy
+ // AliPHOSv1::Streamer when writing root file
+
+ fCPVModules=new TClonesArray("AliPHOSCPVModule",0);
+
+ }
}
//____________________________________________________________________________
if (fGeom->IsInitialized() )
cout << "AliPHOS" << Version() << " : PHOS geometry intialized for " << fGeom->GetName() << endl ;
else
- cout << "AliPHOS" << Version() << " : PHOS geometry initialization failed !" << endl ;
+ cout << "AliPHOS" << Version() << " : PHOS geometry initialization failed !" << endl ;
// Defining the PHOS Reconstructioner
fReconstructioner = Reconstructioner ;
-
}
//____________________________________________________________________________
fTmpHits = 0 ;
}
- if ( fEmcRecPoints ) {
- fEmcRecPoints->Delete() ;
- delete fEmcRecPoints ;
- fEmcRecPoints = 0 ;
- }
-
- if ( fPpsdRecPoints ) {
- fPpsdRecPoints->Delete() ;
- delete fPpsdRecPoints ;
- fPpsdRecPoints = 0 ;
- }
+// if ( fEmcRecPoints ) {
+// fEmcRecPoints->Delete() ;
+// delete fEmcRecPoints ;
+// fEmcRecPoints = 0 ;
+// }
+
+// if ( fPpsdRecPoints ) {
+// fPpsdRecPoints->Delete() ;
+// delete fPpsdRecPoints ;
+// fPpsdRecPoints = 0 ;
+// }
- if ( fTrackSegments ) {
- fTrackSegments->Delete() ;
- delete fTrackSegments ;
- fTrackSegments = 0 ;
- }
+// if ( fTrackSegments ) {
+// fTrackSegments->Delete() ;
+// delete fTrackSegments ;
+// fTrackSegments = 0 ;
+// }
}
Int_t relid[4];
Int_t j ;
TClonesArray &lDigits = *fDigits ;
- AliPHOSHit * hit ;
+ AliPHOSHit * hit ;
AliPHOSDigit * newdigit ;
AliPHOSDigit * curdigit ;
Bool_t deja = kFALSE ;
if( hit->GetEnergy() > fDigitThreshold)
newdigit = new AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
else
- newdigit = new AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
+ newdigit = new AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
deja =kFALSE ;
for ( j = 0 ; j < fNdigits ; j++) {
curdigit = (AliPHOSDigit*) lDigits[j] ;
Float_t energyandnoise ;
for ( i = 0 ; i < fNdigits ; i++ ) {
newdigit = (AliPHOSDigit * ) fDigits->At(i) ;
+
fGeom->AbsToRelNumbering(newdigit->GetId(), relid) ;
if (relid[1]==0){ // Digits belong to EMC (PbW0_4 crystals)
for (i = 0 ; i < fNdigits ; i++) {
newdigit = (AliPHOSDigit *) fDigits->At(i) ;
newdigit->SetIndexInList(i) ;
+
+// fGeom->AbsToRelNumbering(newdigit->GetId(), relid) ;
+// printf("FinishEvent(): relid=(%d,%d,%d,%d) Amp=%d\n",
+// relid[0],relid[1],relid[2],relid[3], newdigit->GetAmp());
}
-
+
}
//___________________________________________________________________________
void AliPHOSv1::MakeBranch(Option_t* opt)
{
// Create new branche in the current Root Tree in the digit Tree
-
AliDetector::MakeBranch(opt) ;
char branchname[10];
}
}
-}
+ // Create new branches CPV<i> for hits in CPV modules for IHEP geometry
+ // Yuri Kharlov, 28 September 2000.
+ if ( strcmp(fGeom->GetName(),"IHEP") == 0 ) {
+ for( Int_t i=0; i<fGeom->GetNModules(); i++ ) GetCPVModule(i).MakeBranch(i+1);
+ }
+
+}
//_____________________________________________________________________________
void AliPHOSv1::Reconstruction(AliPHOSReconstructioner * Reconstructioner)
// gAlice->MakeTree("R") ;
Int_t splitlevel = 0 ;
- if (fEmcRecPoints) {
- fEmcRecPoints->Delete() ;
- delete fEmcRecPoints ;
- fEmcRecPoints = 0 ;
- }
-
- // fEmcRecPoints= new AliPHOSRecPoint::RecPointsList("AliPHOSEmcRecPoint", 1000) ; if TClonesArray
- fEmcRecPoints= new AliPHOSRecPoint::RecPointsList(2000) ;
+ fEmcRecPoints->Delete() ;
if ( fEmcRecPoints && gAlice->TreeR() ) {
sprintf(branchname,"%sEmcRP",GetName()) ;
- // gAlice->TreeR()->Branch(branchname, &fEmcRecPoints, fBufferSize); if TClonesArray
gAlice->TreeR()->Branch(branchname, "TObjArray", &fEmcRecPoints, fBufferSize, splitlevel) ;
}
- if (fPpsdRecPoints) {
- fPpsdRecPoints->Delete() ;
- delete fPpsdRecPoints ;
- fPpsdRecPoints = 0 ;
- }
+ fPpsdRecPoints->Delete() ;
- // fPpsdRecPoints = new AliPHOSRecPoint::RecPointsList("AliPHOSPpsdRecPoint", 1000) ; if TClonesArray
- fPpsdRecPoints = new AliPHOSRecPoint::RecPointsList(2000) ;
if ( fPpsdRecPoints && gAlice->TreeR() ) {
sprintf(branchname,"%sPpsdRP",GetName()) ;
- // gAlice->TreeR()->Branch(branchname, &fPpsdRecPoints, fBufferSize); if TClonesArray
gAlice->TreeR()->Branch(branchname, "TObjArray", &fPpsdRecPoints, fBufferSize, splitlevel) ;
}
- if (fTrackSegments) {
- fTrackSegments->Delete() ;
- delete fTrackSegments ;
- fTrackSegments = 0 ;
- }
+ fTrackSegments->Delete() ;
- fTrackSegments = new AliPHOSTrackSegment::TrackSegmentsList("AliPHOSTrackSegment", 2000) ;
if ( fTrackSegments && gAlice->TreeR() ) {
sprintf(branchname,"%sTS",GetName()) ;
gAlice->TreeR()->Branch(branchname, &fTrackSegments, fBufferSize) ;
}
- if (fRecParticles) {
- fRecParticles->Delete() ;
- delete fRecParticles ;
- fRecParticles = 0 ;
- }
- fRecParticles = new AliPHOSRecParticle::RecParticlesList("AliPHOSRecParticle", 2000) ;
- if ( fRecParticles && gAlice->TreeR() ) {
- sprintf(branchname,"%sRP",GetName()) ;
- gAlice->TreeR()->Branch(branchname, &fRecParticles, fBufferSize) ;
+ fRecParticles->Delete() ;
+
+ if (strcmp(fGeom->GetName(),"GPS2") == 0) {
+ if ( fRecParticles && gAlice->TreeR() ) {
+ sprintf(branchname,"%sRP",GetName()) ;
+ gAlice->TreeR()->Branch(branchname, &fRecParticles, fBufferSize) ;
+ }
}
// 3.
-
- fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints, fTrackSegments, fRecParticles);
+ if (strcmp(fGeom->GetName(),"GPS2") == 0)
+ fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints, fTrackSegments, fRecParticles);
+ else if (strcmp(fGeom->GetName(),"IHEP") == 0)
+ fReconstructioner->Make(fDigits, fEmcRecPoints, fPpsdRecPoints);
// 4. Expand or Shrink the arrays to the proper size
fRecParticles->Expand(size) ;
gAlice->TreeR()->Fill() ;
- cout << "filled" << endl ;
// 5.
gAlice->TreeR()->Write(0,TObject::kOverwrite) ;
- cout << "writen" << endl ;
// Deleting reconstructed objects
ResetReconstruction();
}
+//____________________________________________________________________________
+void AliPHOSv1::ResetHits()
+{
+ // Reset hit tree for CPV in IHEP geometry
+ // Yuri Kharlov, 28 September 2000
+
+ AliDetector::ResetHits();
+ if ( strcmp(fGeom->GetName(),"IHEP") == 0 ) {
+ for (Int_t i=0; i<fGeom->GetNModules(); i++) ((AliPHOSCPVModule*)(*fCPVModules)[i]) -> Clear();
+ }
+}
//____________________________________________________________________________
void AliPHOSv1::ResetDigits()
{
if ( fRecParticles ) fRecParticles->Delete();
}
-//____________________________________________________________________________
//____________________________________________________________________________
void AliPHOSv1::SetTreeAddress()
// if ( treeR && fPpsdRecPoints ) {
// branch = treeR->GetBranch("PHOSPpsdRP");
// if (branch) branch->SetAddress(&fPpsdRecPoints) ;
- // }
+// }
+
+ // Set branch address for the Hits Tree for hits in CPV modules for IHEP geometry
+ // Yuri Kharlov, 28 September 2000.
+
+ if ( strcmp(fGeom->GetName(),"IHEP") == 0 ) {
+ for( Int_t i=0; i<fGeom->GetNModules(); i++ ) GetCPVModule(i).SetTreeAddress(i+1);
+ }
+
}
//____________________________________________________________________________
// Accumulates hits as long as the track stays in a single crystal or PPSD gas Cell
Int_t relid[4] ; // (box, layer, row, column) indices
- Float_t xyze[4] ; // position wrt MRS and energy deposited
- TLorentzVector pos ;
- Int_t copy ;
+ Int_t absid ; // absolute cell ID number
+ Float_t xyze[4] ; // position wrt MRS 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 = fGeom->GetName() ;
- if ( name == "GPS2" ) { // the CPV is a PPSD
+ Int_t primary = gAlice->GetPrimary( gAlice->CurrentTrack() );
+ TString name = fGeom->GetName() ;
+
+ if ( name == "GPS2" ) { // ======> CPV is a GPS' PPSD
+
if( gMC->CurrentVolID(copy) == gMC->VolId("GCEL") ) // We are inside a gas cell
{
gMC->TrackPosition(pos) ;
// get the absolute Id number
- Int_t absid ;
fGeom->RelToAbsNumbering(relid, absid) ;
// add current hit to the hit list
AddHit(fIshunt, primary, tracknumber, absid, xyze);
} // there is deposited energy
- } // We are inside the gas of the CPV
- } // GPS2 configuration
+ } // We are inside the gas of the CPV
+ } // GPS2 configuration
+
+ else if ( name == "IHEP" ) { // ======> CPV is a IHEP's one
+
+ // Yuri Kharlov, 28 September 2000
+
+ if( gMC->CurrentVolID(copy) == gMC->VolId("CPVQ") &&
+ gMC->IsTrackEntering() &&
+ gMC->TrackCharge() != 0) {
+
+ // Charged track has just entered to the CPV sensitive plane
+
+ AliPHOSv1 &PHOS = *(AliPHOSv1*)gAlice->GetModule("PHOS");
+
+ Int_t ModuleNumber;
+ gMC->CurrentVolOffID(3,ModuleNumber);
+ ModuleNumber--;
+
+ // Current position of the hit in the CPV module ref. system
+
+ gMC -> TrackPosition(pos);
+ Float_t xyzm[3], xyzd[3], xyd[2];
+ for (Int_t i=0; i<3; i++) xyzm[i] = pos[i];
+ gMC -> Gmtod (xyzm, xyzd, 1); // transform coordinate from master to daughter system
+ xyd[0] = xyzd[0];
+ xyd[1] =-xyzd[2];
+
+ // Current momentum of the hit's track in the CPV module ref. system
+
+ TLorentzVector pmom;
+ gMC -> TrackMomentum(pmom);
+ Float_t pm[3], pd[3];
+ for (Int_t 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];
+
+ // Current particle type of the hit's track
+
+ Int_t ipart = gMC->TrackPid();
+
+ // Add the current particle in the list of the CPV hits.
+
+ PHOS.GetCPVModule(ModuleNumber).AddHit(pmom,xyd,ipart);
+
+ printf("CPV hit added to module #%2d: p = (% .4f, % .4f, % .4f, % .4f) GeV,\n",
+ ModuleNumber,pmom.Px(),pmom.Py(),pmom.Pz(),pmom.E());
+ printf( " xy = (%8.4f, %8.4f) cm, ipart = %d\n",
+ xyd[0],xyd[1],ipart);
+
+ // Digitize the current CPV hit:
+
+ // 1. find pad response and
+
+ 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 ndigits;
+
+ // 2. go through the current digit list and sum digits in pads
+
+ ndigits = cpvDigits->GetEntriesFast();
+ for (Int_t idigit=0; idigit<ndigits-1; idigit++) {
+ AliPHOSCPVDigit *cpvDigit1 = (AliPHOSCPVDigit*) cpvDigits->UncheckedAt(idigit);
+ Float_t x1 = cpvDigit1->GetXpad() ;
+ Float_t z1 = cpvDigit1->GetYpad() ;
+ for (Int_t jdigit=idigit+1; jdigit<ndigits; jdigit++) {
+ AliPHOSCPVDigit *cpvDigit2 = (AliPHOSCPVDigit*) 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 (Int_t idigit=0; idigit<ndigits; idigit++) {
+ AliPHOSCPVDigit *cpvDigit = (AliPHOSCPVDigit*) 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
+ fGeom->RelToAbsNumbering(relid, absid) ;
+
+ // add current digit to the temporary hit list
+ xyze[0] = 0. ;
+ xyze[1] = 0. ;
+ xyze[2] = 0. ;
+ xyze[3] = cpvDigit->GetQpad() ; // amplitude in a pad
+ primary = -1; // No need in primary for CPV
+ AddHit(fIshunt, primary, tracknumber, absid, xyze);
+
+ if (cpvDigit->GetQpad() > 0.02) {
+ xmean += cpvDigit->GetQpad() * (cpvDigit->GetXpad() + 0.5);
+ zmean += cpvDigit->GetQpad() * (cpvDigit->GetYpad() + 0.5);
+ qsum += cpvDigit->GetQpad();
+ }
+ }
+ delete cpvDigits;
+ }
+ } // end of IHEP configuration
- if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) // We are inside a PBWO crystal
- {
- gMC->TrackPosition(pos) ;
- xyze[0] = pos[0] ;
- xyze[1] = pos[1] ;
- xyze[2] = pos[2] ;
- xyze[3] = gMC->Edep() ;
-
- if ( xyze[3] != 0 ) {
- gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ;
- relid[1] = 0 ; // means PBW04
- gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module
- gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module
-
- // get the absolute Id number
-
- Int_t absid ;
- fGeom->RelToAbsNumbering(relid, absid) ;
-
- // add current hit to the hit list
+ if(gMC->CurrentVolID(copy) == gMC->VolId("PXTL") ) { // We are inside a PBWO crystal
+ gMC->TrackPosition(pos) ;
+ xyze[0] = pos[0] ;
+ xyze[1] = pos[1] ;
+ xyze[2] = pos[2] ;
+ xyze[3] = gMC->Edep() ;
+
+ if ( xyze[3] != 0 ) {
+ gMC->CurrentVolOffID(10, relid[0]) ; // get the PHOS module number ;
+ relid[1] = 0 ; // means PBW04
+ gMC->CurrentVolOffID(4, relid[2]) ; // get the row number inside the module
+ gMC->CurrentVolOffID(3, relid[3]) ; // get the cell number inside the module
+
+ // get the absolute Id number
+
+ fGeom->RelToAbsNumbering(relid, absid) ;
+
+ // add current hit to the hit list
+
+ AddHit(fIshunt, primary,tracknumber, absid, xyze);
+
+ } // there is deposited energy
+ } // we are inside a PHOS Xtal
+}
+
+//____________________________________________________________________________
+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 celWr = fGeom->GetPadSizePhi()/2; // Distance between wires (2 wires above 1 pad)
+ const Float_t detR = 0.1; // Relative energy fluctuation in track for 100 e-
+ const Float_t dEdx = 4.0; // Average energy loss in CPV;
+ const Int_t ngamz = 5; // Ionization size in Z
+ const Int_t ngamx = 9; // Ionization size in Phi
+ const Float_t qNoise = 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
+
+// cout << __PRETTY_FUNCTION__ << ": YVK : Start digitization\n";
+
+ 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 E = dEdx;
+
+// cout << "CPVDigitize: YVK : "<<hitX<<" "<<hitZ<<" | "<<pX<<" "<<pZ<<" "<<pNorm<<endl;
+
+ Float_t dZY = pZ/pNorm * fGeom->GetCPVGasThickness();
+ Float_t dXY = pX/pNorm * fGeom->GetCPVGasThickness();
+ gRandom->Rannor(rnor1,rnor2);
+ E *= (1 + detR*rnor1) *
+ TMath::Sqrt((1 + ( pow(dZY,2) + pow(dXY,2) ) / pow(fGeom->GetCPVGasThickness(),2)));
+ Float_t zhit1 = hitZ + fGeom->GetCPVActiveSize(1)/2 - dZY/2;
+ Float_t xhit1 = hitX + fGeom->GetCPVActiveSize(0)/2 - dXY/2;
+ Float_t zhit2 = zhit1 + dZY;
+ Float_t xhit2 = xhit1 + dXY;
+
+// cout << "CPVDigitize: YVK : "<<xhit1<<" "<<xhit2<<" | "<<zhit1<<" "<<zhit2<<" | "
+// << (Int_t)(xhit1/fGeom->GetPadSizePhi())<<" "<<(Int_t)(zhit1/fGeom->GetPadSizeZ())<<" "<<endl;
+
+ Int_t iwht1 = (Int_t) (xhit1 / celWr); // wire (x) coordinate "in"
+ Int_t iwht2 = (Int_t) (xhit2 / celWr); // 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) * celWr;
+ zxe[2][0] = E/2;
+ zxe[0][1] = (zhit1 + zhit2 + dZY*0.57735) / 2;
+ zxe[1][1] = (iwht1 + 0.5) * celWr;
+ zxe[2][1] = E/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) * celWr; // wire 1
+ Float_t xwht2 = (iwht2 + 0.5) * celWr; // wire 2
+ Float_t xwht3 = (iwht3 + 0.5) * celWr; // 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) + celWr );
+ Float_t egm2 = TMath::Abs(dxw2) / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + celWr );
+ Float_t egm3 = celWr / ( TMath::Abs(dxw1) + TMath::Abs(dxw2) + celWr );
+ zxe[0][0] = (dXY*(xwr13-xwht1)/dXY + zhit1 + zhit1) / 2;
+ zxe[1][0] = xwht1;
+ zxe[2][0] = E * egm1;
+ zxe[0][1] = (dXY*(xwr23-xwht1)/dXY + zhit1 + zhit2) / 2;
+ zxe[1][1] = xwht2;
+ zxe[2][1] = E * egm2;
+ zxe[0][2] = dXY*(xwht3-xwht1)/dXY + zhit1;
+ zxe[1][2] = xwht3;
+ zxe[2][2] = E * egm3;
+ }
+ else { // incline 2-wire hit
+ nIter = 2;
+ Float_t xwht1 = (iwht1 + 0.5) * celWr;
+ Float_t xwht2 = (iwht2 + 0.5) * celWr;
+ 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] = E * egm1;
+ zxe[0][1] = (zhit1 + zhit2 + dZY*egm2) / 2;
+ zxe[1][1] = xwht2;
+ zxe[2][1] = E * egm2;
+ }
- AddHit(fIshunt, primary,tracknumber, absid, xyze);
-
- } // there is deposited energy
- } // we are inside a PHOS Xtal
+ // Finite size of ionization region
+
+ Int_t nCellZ = fGeom->GetNumberOfPadsZ();
+ Int_t nCellX = fGeom->GetNumberOfPadsPhi();
+ Int_t nz3 = (ngamz+1)/2;
+ Int_t nx3 = (ngamx+1)/2;
+ cpvDigits->Expand(nIter*ngamx*ngamz);
+ TClonesArray &ldigits = *(TClonesArray *)cpvDigits;
+
+ for (Int_t iter=0; iter<nIter; iter++) {
+// cout << "CPVDigitize: YVK : iter="<<iter<<endl;
+
+ Float_t zhit = zxe[0][iter];
+ Float_t xhit = zxe[1][iter];
+ Float_t qhit = zxe[2][iter];
+ Float_t zcell = zhit / fGeom->GetPadSizeZ();
+ Float_t xcell = xhit / fGeom->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<=ngamz; 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<=ngamx; 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 += qNoise*rnor2;
+ if (qpad<0) continue;
+
+ // Fill the array with pad response ID and amplitude
+ new(ldigits[cpvDigits->GetEntriesFast()]) AliPHOSCPVDigit(kxg,kzg,qpad);
+// printf("(%2d,%2d,%5.3f) ",kxg,kzg,qpad);
+ }
+// cout << endl;
+ }
+// cout << endl;
+ }
}
+//____________________________________________________________________________
+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 = fGeom->GetPadSizeZ() / 2;
+ Double_t dx = fGeom->GetPadSizePhi() / 2;
+ Double_t z = zhit * fGeom->GetPadSizeZ();
+ Double_t x = xhit * fGeom->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;
+}
+
+//____________________________________________________________________________
+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 a=1.0;
+ const Double_t b=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) * b;
+ cumulPRF += TMath::Power(-1,i) * TMath::ATan( xy / (b1*TMath::Sqrt(b1*b1 + r2)) );
+ }
+ cumulPRF *= a/(2*TMath::Pi());
+ return cumulPRF;
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff