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-<title>AliPHOSTrackSegmentMakerv1 - source file</title>
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-/**************************************************************************
- * 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. *
- **************************************************************************/
-
-/* $Id$ */
-
-<b>//_________________________________________________________________________</b>
-<b>// Implementation version 1 of algorithm class to construct PHOS track segments</b>
-<b>// Associates EMC and PPSD clusters</b>
-<b>// Unfolds the EMC cluster </b>
-<b>// </b>
-<b>//*-- Author: Dmitri Peressounko (RRC Ki & SUBATECH)</b>
-<b>//</b>
-
-<b>// --- ROOT system ---</b>
-
-#include "TObjArray.h"
-#include "TClonesArray.h"
-#include "TObjectTable.h"
-
-<b>// --- Standard library ---</b>
-
-#include <iostream>
-#include <cassert>
-
-<b>// --- AliRoot header files ---</b>
-
-#include "<a href="../AliPHOSTrackSegmentMakerv1.h">AliPHOSTrackSegmentMakerv1.h</a>"
-#include "<a href="../AliPHOSTrackSegment.h">AliPHOSTrackSegment.h</a>"
-#include "<a href="../AliPHOSLink.h">AliPHOSLink.h</a>"
-#include "<a href="../AliPHOSv0.h">AliPHOSv0.h</a>"
-#include "AliRun.h"
-
-extern void UnfoldingChiSquare(Int_t &nPar, Double_t *Grad, Double_t & fret, Double_t *x, Int_t iflag) ;
-
-ClassImp( AliPHOSTrackSegmentMakerv1)
-
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:AliPHOSTrackSegmentMakerv1"> </a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:AliPHOSTrackSegmentMakerv1">AliPHOSTrackSegmentMakerv1::AliPHOSTrackSegmentMakerv1</a>()
-{
-<b> // ctor</b>
-
- <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fR0">fR0</a> = 4. ;
- <a href=".././AliPHOSGeometry.html">AliPHOSGeometry</a> * geom = <a href=".././AliPHOSGeometry.html#AliPHOSGeometry:GetInstance">AliPHOSGeometry::GetInstance</a>() ;
-<b> //clusters are sorted in "rows" and "columns" of width geom->GetCrystalSize(0),</b>
- <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fDelta">fDelta</a> = <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fR0">fR0</a> + geom->GetCrystalSize(0) ;
- <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fMinuit">fMinuit</a> = new TMinuit(100) ;
- <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fUnfoldFlag">fUnfoldFlag</a> = kTRUE ;
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:~AliPHOSTrackSegmentMakerv1"> </a> <a href=".././AliPHOSTrackSegmentMakerv1.html">AliPHOSTrackSegmentMakerv1</a>::~<a href=".././AliPHOSTrackSegmentMakerv1.html">AliPHOSTrackSegmentMakerv1</a>()
-{
-<b> // dtor</b>
-
- delete <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fMinuit">fMinuit</a> ;
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:FindFit"> </a><a href="../ListOfTypes.html#Bool_t">Bool_t</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:FindFit">AliPHOSTrackSegmentMakerv1::FindFit</a>(<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emcRP, <a href="../ListOfTypes.html#int">int</a> * maxAt, <a href="../ListOfTypes.html#Float_t">Float_t</a> * maxAtEnergy,
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nPar, <a href="../ListOfTypes.html#Float_t">Float_t</a> * fitparameters)
-{
-<b> // Calls TMinuit to fit the energy distribution of a cluster with several maxima </b>
-
- <a href=".././AliPHOSGeometry.html">AliPHOSGeometry</a> * geom = <a href=".././AliPHOSGeometry.html#AliPHOSGeometry:GetInstance">AliPHOSGeometry::GetInstance</a>() ;
-
- gMinuit->SetPrintLevel(-1) ; // No Printout
- gMinuit->SetFCN(UnfoldingChiSquare) ; // To set the address of the minimization function
- gMinuit->SetObjectFit(emcRP) ; // To tranfer pointer to UnfoldingChiSquare
-
-<b> // filling initial values for fit parameters</b>
- <a href=".././AliPHOSDigit.html">AliPHOSDigit</a> * digit ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> ierflg = 0;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> index = 0 ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nDigits = (<a href="../ListOfTypes.html#Int_t">Int_t</a>) nPar / 3 ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iDigit ;
-
-
- for(iDigit = 0; iDigit < nDigits; iDigit++){
- digit = (<a href=".././AliPHOSDigit.html">AliPHOSDigit</a> *) maxAt[iDigit];
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> relid[4] ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> x ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> z ;
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, x, z) ;
-
- <a href="../ListOfTypes.html#Float_t">Float_t</a> energy = maxAtEnergy[iDigit] ;
-
- gMinuit->mnparm(index, "x", x, 0.1, 0, 0, ierflg) ;
- index++ ;
- if(ierflg != 0){
- cout << "PHOS Unfolding> Unable to set initial value for fit procedure : x = " << x << endl ;
- return kFALSE;
- }
- gMinuit->mnparm(index, "z", z, 0.1, 0, 0, ierflg) ;
- index++ ;
- if(ierflg != 0){
- cout << "PHOS Unfolding> Unable to set initial value for fit procedure : z = " << z << endl ;
- return kFALSE;
- }
- gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;
- index++ ;
- if(ierflg != 0){
- cout << "PHOS Unfolding> Unable to set initial value for fit procedure : energy = " << energy << endl ;
- return kFALSE;
- }
- }
-
- <a href="../ListOfTypes.html#Double_t">Double_t</a> p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ; The number of function call slightly
-<b> // depends on it. </b>
- <a href="../ListOfTypes.html#Double_t">Double_t</a> p1 = 1.0 ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> p2 = 0.0 ;
-
- gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TgMinuit to reduce function calls
- gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
- gMinuit->SetMaxIterations(5);
- gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
- gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
- if(ierflg == 4){ // Minimum not found
- cout << "PHOS Unfolding> Fit not converged, cluster abandoned "<< endl ;
- return kFALSE ;
- }
- for(index = 0; index < nPar; index++){
- <a href="../ListOfTypes.html#Double_t">Double_t</a> err ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> val ;
- gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
- fitparameters[index] = val ;
- }
- return kTRUE;
-
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:FillOneModule"> </a><a href="../ListOfTypes.html#void">void</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:FillOneModule">AliPHOSTrackSegmentMakerv1::FillOneModule</a>(<a href="../ListOfTypes.html#DigitsList">DigitsList</a> * Dl, <a href="../ListOfTypes.html#RecPointsList">RecPointsList</a> * emcIn, TObjArray * emcOut,
- <a href="../ListOfTypes.html#RecPointsList">RecPointsList</a> * ppsdIn, TObjArray * ppsdOutUp,
- TObjArray * ppsdOutLow, <a href="../ListOfTypes.html#Int_t">Int_t</a> & phosmod, <a href="../ListOfTypes.html#Int_t">Int_t</a> & emcStopedAt,
- <a href="../ListOfTypes.html#Int_t">Int_t</a> & ppsdStopedAt)
-{
-<b> // Unfold clusters and fill xxxOut arrays with clusters from one PHOS module</b>
-
- <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emcRecPoint ;
- <a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> * ppsdRecPoint ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> index ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nEmcUnfolded = emcIn->GetEntries() ;
- for(index = emcStopedAt; index < nEmcUnfolded; index++){
- emcRecPoint = (<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> *) (*emcIn)[index] ;
-
- if(emcRecPoint->GetPHOSMod() != phosmod )
- break ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nMultipl = emcRecPoint->GetMultiplicity() ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> maxAt[nMultipl] ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> maxAtEnergy[nMultipl] ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nMax = emcRecPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy) ;
-
- if(nMax <= 1 ) // if cluster is very flat (no pronounced maximum) then nMax = 0
- emcOut->Add(emcRecPoint) ;
- else if (<a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fUnfoldFlag">fUnfoldFlag</a>) {
- <a href="#AliPHOSTrackSegmentMakerv1:UnfoldClusters">UnfoldClusters</a>(Dl, emcIn, emcRecPoint, nMax, maxAt, maxAtEnergy, emcOut) ;
- emcIn->Remove(emcRecPoint);
- emcIn->Compress() ;
- nEmcUnfolded-- ;
- index-- ;
- }
- }
- emcStopedAt = index ;
-
- for(index = ppsdStopedAt; index < ppsdIn->GetEntries(); index++){
- ppsdRecPoint = (<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> *) (*ppsdIn)[index] ;
- if(ppsdRecPoint->GetPHOSMod() != phosmod )
- break ;
- if(ppsdRecPoint->GetUp() )
- ppsdOutUp->Add(ppsdRecPoint) ;
- else
- ppsdOutLow->Add(ppsdRecPoint) ;
- }
- ppsdStopedAt = index ;
-
- emcOut->Sort() ;
- ppsdOutUp->Sort() ;
- ppsdOutLow->Sort() ;
-}
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:GetDistanceInPHOSPlane"> </a><a href="../ListOfTypes.html#Float_t">Float_t</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:GetDistanceInPHOSPlane">AliPHOSTrackSegmentMakerv1::GetDistanceInPHOSPlane</a>(<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emcclu,<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> * PpsdClu, <a href="../ListOfTypes.html#Bool_t">Bool_t</a> &toofar)
-{
-<b> // Calculates the distance between the EMC RecPoint and the PPSD RecPoint</b>
-
- <a href="../ListOfTypes.html#Float_t">Float_t</a> r = <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fR0">fR0</a> ;
-
- TVector3 vecEmc ;
- TVector3 vecPpsd ;
-
- emcclu->GetLocalPosition(vecEmc) ;
- PpsdClu->GetLocalPosition(vecPpsd) ;
- if(emcclu->GetPHOSMod() == PpsdClu->GetPHOSMod()){
- if(vecPpsd.X() >= vecEmc.X() - <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fDelta">fDelta</a> ){
- if(vecPpsd.Z() >= vecEmc.Z() - <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fDelta">fDelta</a> ){
- <a href=".././AliPHOSGeometry.html">AliPHOSGeometry</a> * geom = <a href=".././AliPHOSGeometry.html#AliPHOSGeometry:GetInstance">AliPHOSGeometry::GetInstance</a>() ;
-<b> // Correct to difference in CPV and EMC position due to different distance to center.</b>
-<b> // we assume, that particle moves from center</b>
- <a href="../ListOfTypes.html#Float_t">Float_t</a> dCPV = geom->GetIPtoOuterCoverDistance();
- <a href="../ListOfTypes.html#Float_t">Float_t</a> dEMC = geom->GetIPtoCrystalSurface() ;
- dEMC = dEMC / dCPV ;
- vecPpsd = dEMC * vecPpsd - vecEmc ;
- r = vecPpsd.Mag() ;
- } // if zPpsd >= zEmc - <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fDelta">fDelta</a>
- toofar = kFALSE ;
- } // if xPpsd >= xEmc - <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fDelta">fDelta</a>
- else
- toofar = kTRUE ;
- }
- else
- toofar = kTRUE ;
-
- return r ;
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:MakeLinks"> </a><a href="../ListOfTypes.html#void">void</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:MakeLinks">AliPHOSTrackSegmentMakerv1::MakeLinks</a>(TObjArray * emcRecPoints, TObjArray * ppsdRecPointsUp,
- TObjArray * ppsdRecPointsLow, TClonesArray * linklowArray,
- TClonesArray *linkupArray)
-{
-<b> // Finds distances (links) between all EMC and PPSD clusters, which are not further apart from each other than <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fR0">fR0</a> </b>
-
- TIter nextEmc(emcRecPoints) ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iEmcClu = 0 ;
-
- <a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> * ppsdlow ;
- <a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> * ppsdup ;
- <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emcclu ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iLinkLow = 0 ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iLinkUp = 0 ;
-
- while( (emcclu = (<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a>*)nextEmc() ) ) {
- <a href="../ListOfTypes.html#Bool_t">Bool_t</a> toofar ;
- TIter nextPpsdLow(ppsdRecPointsLow ) ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iPpsdLow = 0 ;
-
- while( (ppsdlow = (<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a>*)nextPpsdLow() ) ) {
- <a href="../ListOfTypes.html#Float_t">Float_t</a> r = <a href="#AliPHOSTrackSegmentMakerv1:GetDistanceInPHOSPlane">GetDistanceInPHOSPlane</a>(emcclu, ppsdlow, toofar) ;
-
- if(toofar)
- break ;
- if(r < <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fR0">fR0</a>)
- new( (*linklowArray)[iLinkLow++]) <a href=".././AliPHOSLink.html">AliPHOSLink</a>(r, iEmcClu, iPpsdLow) ;
-
- iPpsdLow++ ;
-
- }
-
- TIter nextPpsdUp(ppsdRecPointsUp ) ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iPpsdUp = 0 ;
-
- while( (ppsdup = (<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a>*)nextPpsdUp() ) ) {
- <a href="../ListOfTypes.html#Float_t">Float_t</a> r = <a href="#AliPHOSTrackSegmentMakerv1:GetDistanceInPHOSPlane">GetDistanceInPHOSPlane</a>(emcclu, ppsdup, toofar) ;
-
- if(toofar)
- break ;
- if(r < <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:fR0">fR0</a>)
- new( (*linkupArray)[iLinkUp++]) <a href=".././AliPHOSLink.html">AliPHOSLink</a>(r, iEmcClu, iPpsdUp) ;
-
- iPpsdUp++ ;
-
- }
-
- iEmcClu++ ;
-
- } // while nextEmC
-
- linklowArray->Sort() ; //first links with smallest distances
- linkupArray->Sort() ;
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:MakePairs"> </a><a href="../ListOfTypes.html#void">void</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:MakePairs">AliPHOSTrackSegmentMakerv1::MakePairs</a>(TObjArray * emcRecPoints, TObjArray * ppsdRecPointsUp,
- TObjArray * ppsdRecPointsLow, TClonesArray * linklowArray,
- TClonesArray * linkupArray, <a href="../ListOfTypes.html#TrackSegmentsList">TrackSegmentsList</a> * trsl)
-{
-
-<b> // Finds the smallest links and makes pairs of PPSD and EMC clusters with smallest distance </b>
-
- TIter nextLow(linklowArray) ;
- TIter nextUp(linkupArray) ;
-
- <a href=".././AliPHOSLink.html">AliPHOSLink</a> * linkLow ;
- <a href=".././AliPHOSLink.html">AliPHOSLink</a> * linkUp ;
-
- <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emc ;
- <a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> * ppsdLow ;
- <a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> * ppsdUp ;
-
- <a href=".././AliPHOSRecPoint.html">AliPHOSRecPoint</a> * nullpointer = 0 ;
-
- while ( (linkLow = (<a href=".././AliPHOSLink.html">AliPHOSLink</a> *)nextLow() ) ){
- emc = (<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> *) emcRecPoints->At(linkLow->GetEmc()) ;
- ppsdLow = (<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> *) ppsdRecPointsLow->At(linkLow->GetPpsd()) ;
- if( (emc) && (ppsdLow) ){ // RecPoints not removed yet
- ppsdUp = 0 ;
-
- while ( (linkUp = (<a href=".././AliPHOSLink.html">AliPHOSLink</a> *)nextUp() ) ){
- if(linkLow->GetEmc() == linkUp->GetEmc() ){
- ppsdUp = (<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> *) ppsdRecPointsUp->At(linkUp->GetPpsd()) ;
- break ;
- }
-
- } // while nextUp
-
- nextUp.Reset();
- <a href=".././AliPHOSTrackSegment.html">AliPHOSTrackSegment</a> * subtr = new <a href=".././AliPHOSTrackSegment.html">AliPHOSTrackSegment</a>(emc, ppsdUp, ppsdLow ) ;
- trsl->Add(subtr) ;
- emcRecPoints->AddAt(nullpointer,linkLow->GetEmc()) ;
- ppsdRecPointsLow->AddAt(nullpointer,linkLow->GetPpsd()) ;
-
- if(ppsdUp)
- ppsdRecPointsUp->AddAt(nullpointer,linkUp->GetPpsd()) ;
-
- }
- }
-
- TIter nextEmc(emcRecPoints) ;
- nextEmc.Reset() ;
-
- while( (emc = (<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a>*)nextEmc()) ){ //to create pairs if no ppsdlow
- ppsdLow = 0 ;
- ppsdUp = 0 ;
-
- while ( (linkUp = (<a href=".././AliPHOSLink.html">AliPHOSLink</a> *)nextUp() ) ){
-
- if(emcRecPoints->IndexOf(emc) == linkUp->GetEmc() ){
- ppsdUp = (<a href=".././AliPHOSPpsdRecPoint.html">AliPHOSPpsdRecPoint</a> *) ppsdRecPointsUp->At(linkUp->GetPpsd()) ;
- break ;
- }
-
- }
- <a href=".././AliPHOSTrackSegment.html">AliPHOSTrackSegment</a> * subtr = new <a href=".././AliPHOSTrackSegment.html">AliPHOSTrackSegment</a>(emc, ppsdUp, ppsdLow ) ;
- trsl->Add(subtr) ;
-
- if(ppsdUp)
- ppsdRecPointsUp->AddAt(nullpointer,linkUp->GetPpsd()) ;
- }
-
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:MakeTrackSegments"> </a><a href="../ListOfTypes.html#void">void</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:MakeTrackSegments">AliPHOSTrackSegmentMakerv1::MakeTrackSegments</a>(<a href="../ListOfTypes.html#DigitsList">DigitsList</a> * DL, <a href="../ListOfTypes.html#RecPointsList">RecPointsList</a> * emcl,
- <a href="../ListOfTypes.html#RecPointsList">RecPointsList</a> * ppsdl, <a href="../ListOfTypes.html#TrackSegmentsList">TrackSegmentsList</a> * trsl)
-{
-<b> // Makes the track segments out of the list of EMC and PPSD Recpoints and stores them in a list</b>
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> phosmod = 1 ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> emcStopedAt = 0 ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> ppsdStopedAt = 0 ;
-
- TObjArray * emcRecPoints = new TObjArray(100) ; // these arrays keep pointers
- TObjArray * ppsdRecPointsUp = new TObjArray(100) ; // to RecPoints, which are
- TObjArray * ppsdRecPointsLow = new TObjArray(100) ; // kept in TClonesArray's emcl and ppsdl
-
-
- TClonesArray * linklowArray = new TClonesArray("<a href=".././AliPHOSLink.html">AliPHOSLink</a>", 100);
- TClonesArray * linkupArray = new TClonesArray("<a href=".././AliPHOSLink.html">AliPHOSLink</a>", 100);
-
- <a href=".././AliPHOSGeometry.html">AliPHOSGeometry</a> * geom = <a href=".././AliPHOSGeometry.html#AliPHOSGeometry:GetInstance">AliPHOSGeometry::GetInstance</a>() ;
-
- while(phosmod <= geom->GetNModules() ){
-
- <a href="#AliPHOSTrackSegmentMakerv1:FillOneModule">FillOneModule</a>(DL, emcl, emcRecPoints, ppsdl, ppsdRecPointsUp, ppsdRecPointsLow, phosmod, emcStopedAt, ppsdStopedAt) ;
-
- <a href="#AliPHOSTrackSegmentMakerv1:MakeLinks">MakeLinks</a>(emcRecPoints, ppsdRecPointsUp, ppsdRecPointsLow, linklowArray, linkupArray) ;
-
- <a href="#AliPHOSTrackSegmentMakerv1:MakePairs">MakePairs</a>(emcRecPoints, ppsdRecPointsUp, ppsdRecPointsLow, linklowArray, linkupArray, trsl) ;
-
- emcRecPoints->Clear() ;
-
- ppsdRecPointsUp->Clear() ;
-
- ppsdRecPointsLow->Clear() ;
-
- linkupArray->Clear() ;
-
- linklowArray->Clear() ;
-
- phosmod++ ;
- }
- delete emcRecPoints ;
- emcRecPoints = 0 ;
-
- delete ppsdRecPointsUp ;
- ppsdRecPointsUp = 0 ;
-
- delete ppsdRecPointsLow ;
- ppsdRecPointsLow = 0 ;
-
- delete linkupArray ;
- linkupArray = 0 ;
-
- delete linklowArray ;
- linklowArray = 0 ;
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:ShowerShape"> </a><a href="../ListOfTypes.html#Double_t">Double_t</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:ShowerShape">AliPHOSTrackSegmentMakerv1::ShowerShape</a>(<a href="../ListOfTypes.html#Double_t">Double_t</a> r)
-{
-<b> // Shape of the shower (see PHOS TDR)</b>
-<b> // If you change this function, change also the gradien evaluation in ChiSquare()</b>
-
- <a href="../ListOfTypes.html#Double_t">Double_t</a> r4 = r*r*r*r ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> r295 = TMath::Power(r, 2.95) ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> shape = TMath::Exp( -r4 * (1. / (2.32 + 0.26 * r4) + 0.0316 / (1 + 0.0652 * r295) ) ) ;
- return shape ;
-}
-
-<b>//____________________________________________________________________________</b>
-<a name="AliPHOSTrackSegmentMakerv1:UnfoldClusters"> </a><a href="../ListOfTypes.html#void">void</a> <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:UnfoldClusters">AliPHOSTrackSegmentMakerv1::UnfoldClusters</a>(<a href="../ListOfTypes.html#DigitsList">DigitsList</a> * DL, <a href="../ListOfTypes.html#RecPointsList">RecPointsList</a> * emcIn, <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * iniEmc,
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nMax, <a href="../ListOfTypes.html#int">int</a> * maxAt, <a href="../ListOfTypes.html#Float_t">Float_t</a> * maxAtEnergy, TObjArray * emcList)
-{
-<b> // Performs the unfolding of a cluster with nMax overlapping showers </b>
-<b> // This is time consuming (use the (Un)SetUnfolFlag() )</b>
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nPar = 3 * nMax ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> fitparameters[nPar] ;
- <a href=".././AliPHOSGeometry.html">AliPHOSGeometry</a> * geom = <a href=".././AliPHOSGeometry.html#AliPHOSGeometry:GetInstance">AliPHOSGeometry::GetInstance</a>() ;
-
- <a href="../ListOfTypes.html#Bool_t">Bool_t</a> rv = <a href="#AliPHOSTrackSegmentMakerv1:FindFit">FindFit</a>(iniEmc, maxAt, maxAtEnergy, nPar, fitparameters) ;
- if( !rv ) // Fit failed, return and remove cluster
- return ;
-
- <a href="../ListOfTypes.html#Float_t">Float_t</a> xDigit ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> zDigit ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> relid[4] ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> nDigits = iniEmc->GetMultiplicity() ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> xpar ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> zpar ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> epar ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> distance ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> ratio ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> efit[nDigits] ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iparam ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iDigit ;
-
- <a href=".././AliPHOSDigit.html">AliPHOSDigit</a> * digit ;
- <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emcRP ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> * emcDigits = iniEmc->GetDigitsList() ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> * emcEnergies = iniEmc->GetEnergiesList() ;
-
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iRecPoint = emcIn->GetEntries() ;
-
- for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
- digit = (<a href=".././AliPHOSDigit.html">AliPHOSDigit</a> *) emcDigits[iDigit];
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, xDigit, zDigit) ;
- efit[iDigit] = 0;
- iparam = 0 ;
-
- while(iparam < nPar ){
- xpar = fitparameters[iparam] ;
- zpar = fitparameters[iparam+1] ;
- epar = fitparameters[iparam+2] ;
- iparam += 3 ;
- distance = (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) ;
- distance = TMath::Sqrt(distance) ;
- efit[iDigit] += epar * <a href="#AliPHOSTrackSegmentMakerv1:ShowerShape">ShowerShape</a>(distance) ;
- }
- }
-
- iparam = 0 ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> eDigit ;
-
- while(iparam < nPar ){
- xpar = fitparameters[iparam] ;
- zpar = fitparameters[iparam+1] ;
- epar = fitparameters[iparam+2] ;
- iparam += 3 ;
- new ((*emcIn)[iRecPoint]) <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a>( iniEmc->GetLogWeightCut(), iniEmc->GetLocMaxCut() ) ;
- emcRP = (<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> *) emcIn->At(iRecPoint++);
-
- for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
- digit = (<a href=".././AliPHOSDigit.html">AliPHOSDigit</a> *) emcDigits[iDigit];
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, xDigit, zDigit) ;
- distance = (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) ;
- distance = TMath::Sqrt(distance) ;
- ratio = epar * <a href="#AliPHOSTrackSegmentMakerv1:ShowerShape">ShowerShape</a>(distance) / efit[iDigit] ;
- eDigit = emcEnergies[iDigit] * ratio ;
- emcRP->AddDigit( *digit, eDigit ) ;
- }
-
- emcList->Add(emcRP) ;
-
- }
-}
-
-<b>//______________________________________________________________________________</b>
-<a href="../ListOfTypes.html#void">void</a> UnfoldingChiSquare(<a href="../ListOfTypes.html#Int_t">Int_t</a> & nPar, <a href="../ListOfTypes.html#Double_t">Double_t</a> * Grad, <a href="../ListOfTypes.html#Double_t">Double_t</a> & fret, <a href="../ListOfTypes.html#Double_t">Double_t</a> * x, <a href="../ListOfTypes.html#Int_t">Int_t</a> iflag)
-{
-<b> // Calculates th Chi square for the cluster unfolding minimization</b>
-<b> // Number of parameters, Gradient, Chi squared, parameters, what to do</b>
-
- <a href=".././AliPHOSGeometry.html">AliPHOSGeometry</a> * geom = <a href=".././AliPHOSGeometry.html#AliPHOSGeometry:GetInstance">AliPHOSGeometry::GetInstance</a>() ;
-
- <a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> * emcRP = (<a href=".././AliPHOSEmcRecPoint.html">AliPHOSEmcRecPoint</a> *) gMinuit->GetObjectFit() ; // EmcRecPoint to fit
- <a href="../ListOfTypes.html#Int_t">Int_t</a> * emcDigits = emcRP->GetDigitsList() ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> * emcEnergies = emcRP->GetEnergiesList() ;
- fret = 0. ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iparam ;
-
- if(iflag == 2)
- for(iparam = 0 ; iparam < nPar ; iparam++)
- Grad[iparam] = 0 ; // Will evaluate gradient
-
- <a href="../ListOfTypes.html#Double_t">Double_t</a> efit ;
-
- <a href=".././AliPHOSDigit.html">AliPHOSDigit</a> * digit ;
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iDigit = 0 ;
-
- while ( (digit = (<a href=".././AliPHOSDigit.html">AliPHOSDigit</a> *)emcDigits[iDigit] )){
- <a href="../ListOfTypes.html#Int_t">Int_t</a> relid[4] ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> xDigit ;
- <a href="../ListOfTypes.html#Float_t">Float_t</a> zDigit ;
- geom->AbsToRelNumbering(digit->GetId(), relid) ;
- geom->RelPosInModule(relid, xDigit, zDigit) ;
-
- if(iflag == 2){ // calculate gradient
- <a href="../ListOfTypes.html#Int_t">Int_t</a> iParam = 0 ;
- efit = 0 ;
- while(iParam < nPar ){
- <a href="../ListOfTypes.html#Double_t">Double_t</a> distance = (xDigit - x[iParam]) * (xDigit - x[iParam]) ;
- iParam++ ;
- distance += (zDigit - x[iParam]) * (zDigit - x[iParam]) ;
- distance = TMath::Sqrt( distance ) ;
- iParam++ ;
- efit += x[iParam] * <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:ShowerShape">AliPHOSTrackSegmentMakerv1::ShowerShape</a>(distance) ;
- iParam++ ;
- }
- <a href="../ListOfTypes.html#Double_t">Double_t</a> sum = 2. * (efit - emcEnergies[iDigit]) / emcEnergies[iDigit] ; // Here we assume, that sigma = sqrt(E)
- iParam = 0 ;
- while(iParam < nPar ){
- <a href="../ListOfTypes.html#Double_t">Double_t</a> xpar = x[iParam] ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> zpar = x[iParam+1] ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> epar = x[iParam+2] ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> dr = TMath::Sqrt( (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) );
- <a href="../ListOfTypes.html#Double_t">Double_t</a> shape = sum * <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:ShowerShape">AliPHOSTrackSegmentMakerv1::ShowerShape</a>(dr) ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> r4 = dr*dr*dr*dr ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> r295 = TMath::Power(dr,2.95) ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> deriv =-4. * dr*dr * ( 2.32 / ( (2.32 + 0.26 * r4) * (2.32 + 0.26 * r4) ) +
- 0.0316 * (1. + 0.0171 * r295) / ( ( 1. + 0.0652 * r295) * (1. + 0.0652 * r295) ) ) ;
-
- Grad[iParam] += epar * shape * deriv * (xpar - xDigit) ; // Derivative over x
- iParam++ ;
- Grad[iParam] += epar * shape * deriv * (zpar - zDigit) ; // Derivative over z
- iParam++ ;
- Grad[iParam] += shape ; // Derivative over energy
- iParam++ ;
- }
- }
- efit = 0;
- iparam = 0 ;
- while(iparam < nPar ){
- <a href="../ListOfTypes.html#Double_t">Double_t</a> xpar = x[iparam] ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> zpar = x[iparam+1] ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> epar = x[iparam+2] ;
- iparam += 3 ;
- <a href="../ListOfTypes.html#Double_t">Double_t</a> distance = (xDigit - xpar) * (xDigit - xpar) + (zDigit - zpar) * (zDigit - zpar) ;
- distance = TMath::Sqrt(distance) ;
- efit += epar * <a href=".././AliPHOSTrackSegmentMakerv1.html#AliPHOSTrackSegmentMakerv1:ShowerShape">AliPHOSTrackSegmentMakerv1::ShowerShape</a>(distance) ;
- }
- fret += (efit-emcEnergies[iDigit])*(efit-emcEnergies[iDigit])/emcEnergies[iDigit] ;
-<b> // Here we assume, that sigma = sqrt(E)</b>
- iDigit++ ;
- }
-}
-</pre>
-
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