1 /***************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 //-----------------------------------------------------//
18 // Date : August 05 2003 //
19 // This reads the file PMD.digits.root(TreeD), //
20 // calls the Clustering algorithm and stores the //
21 // clustering output in PMD.RecPoints.root(TreeR) //
23 //-----------------------------------------------------//
25 #include <Riostream.h>
28 #include <TObjArray.h>
29 #include <TClonesArray.h>
32 #include <TParticle.h>
35 #include "AliPMDcluster.h"
36 #include "AliPMDclupid.h"
37 #include "AliPMDDiscriminator.h"
39 ClassImp(AliPMDDiscriminator)
41 AliPMDDiscriminator::AliPMDDiscriminator() :
45 // Default Constructor
49 // -----------------------------------------------------------------------
50 AliPMDDiscriminator::~AliPMDDiscriminator()
55 // -----------------------------------------------------------------------
57 void AliPMDDiscriminator::Discrimination(TObjArray *pmdcontin, TObjArray *pmdcontout)
59 // Does Photon/Hadron discrimination
63 EmpDiscrimination(pmdcontin, pmdcontout);
65 else if(fDiscrim == 1)
70 // -----------------------------------------------------------------------
72 void AliPMDDiscriminator::EmpDiscrimination(TObjArray *pmdcontin, TObjArray *pmdcontout)
74 // Does Photon/Hadron discrimination
75 // matching the clusters of CPV and PREshower plane
77 const Int_t kumperdet = 24;
78 static Int_t neibx[6]={1,0,-1,-1,0,1}, neiby[6]={0,1,1,0,-1,-1};
79 Int_t det = 0, smn = 0;
80 Int_t iprecount[24], icpvcount[24];
81 Float_t xpos = 0., ypos = 0.;
82 Float_t adc = 0., ncell = 0., rad = 0.;
83 Float_t clusdata[6] = {0.,0.,0.,0.,0.,0.};
85 for(Int_t i = 0; i < kumperdet; i++)
90 AliPMDcluster *pmdcl = 0;
91 AliPMDclupid *pmdclout = 0;
93 Int_t nentries1 = pmdcontin->GetEntries();
95 AliDebug(1,Form("Number of total clusters from CPV PRE = %d",nentries1));
96 for (Int_t ient1 = 0; ient1 < nentries1; ient1++)
98 pmdcl = (AliPMDcluster*)pmdcontin->UncheckedAt(ient1);
100 det = pmdcl->GetDetector();
101 smn = pmdcl->GetSMN();
102 if(det == 0) iprecount[smn]++;
103 if(det == 1) icpvcount[smn]++;
104 } // Entries of TObjArray loop
106 Int_t idet = 0, ismn = 0;
107 Float_t edepcpv[48][96];
108 Int_t statuscpv[48][96];
110 for(Int_t i = 0; i < kumperdet; i++) // unit module
112 // Initialisation of the ADC of CPV (1UM)
113 for (Int_t ix = 0; ix < 48;ix++)
115 for (Int_t iy = 0; iy < 96;iy++)
117 edepcpv[ix][iy] = 0.;
118 statuscpv[ix][iy] = 0;
121 Int_t precounter = iprecount[i];
122 Int_t cpvcounter = icpvcount[i];
124 Float_t *xpadpre = new Float_t[precounter];
125 Float_t *ypadpre = new Float_t[precounter];
126 Float_t *adcpre = new Float_t[precounter];
127 Float_t *ncellpre = new Float_t[precounter];
128 Float_t *radpre = new Float_t[precounter];
129 Int_t *sortcoord = new Int_t[precounter];
130 Int_t *clupidpre = new Int_t[precounter];
132 Float_t *xpadcpv = new Float_t[cpvcounter];
133 Float_t *ypadcpv = new Float_t[cpvcounter];
134 Float_t *adccpv = new Float_t[cpvcounter];
135 Float_t *ncellcpv = new Float_t[cpvcounter];
136 Float_t *radcpv = new Float_t[cpvcounter];
140 for (Int_t ient1 = 0; ient1 < nentries1; ient1++)
142 pmdcl = (AliPMDcluster*)pmdcontin->UncheckedAt(ient1);
144 det = pmdcl->GetDetector();
145 smn = pmdcl->GetSMN();
146 xpos = pmdcl->GetClusX();
147 ypos = pmdcl->GetClusY();
148 adc = pmdcl->GetClusADC();
149 ncell = pmdcl->GetClusCells();
150 rad = pmdcl->GetClusRadius();
152 if(det == 0 && smn == i)
157 ncellpre[ii] = ncell;
161 if(det == 1 && smn == i)
163 Int_t ix = (Int_t) (xpos+0.5);
164 Int_t iy = (Int_t) (ypos+0.5);
167 edepcpv[ix][iy] = adc;
171 ncellcpv[ij] = ncell;
175 } // Entries of TObjArray loop
176 // sorts from lowest ADC to highest ADC
177 // and returns the coordinates
178 Bool_t jsort = false;
179 TMath::Sort(precounter,adcpre,sortcoord,jsort);
182 for(Int_t jj=0; jj<precounter; jj++)
185 // PIDs for PRE clusters are 0(photon) and 1(hadron)
187 jjsort = sortcoord[jj];
189 Int_t ix = (Int_t) (xpadpre[jjsort]+0.5);
190 Int_t iy = (Int_t) (ypadpre[jjsort]+0.5);
194 for(Int_t jk=0; jk<6; jk++)
196 Int_t jd1 = ix + neibx[jk];
197 Int_t jd2 = iy + neiby[jk];
199 if(jd1 >47) jd1 = 47;
201 if(jd2 >47) jd2 = 47;
202 if(edepcpv[jd1][jd2] > 0.0 && statuscpv[jd1][jd2] == 0)
204 statuscpv[jd1][jd2] = 1;
205 clupidpre[jjsort] = 1;
212 clusdata[0] = xpadpre[jjsort];
213 clusdata[1] = ypadpre[jjsort];
214 clusdata[2] = adcpre[jjsort];
215 clusdata[3] = ncellpre[jjsort];
216 clusdata[4] = radpre[jjsort];
217 //PH clusdata[5] = (Float_t) clupidpre[jjsort];
219 // Temporary the cluster PID is set to 1 if the
220 // adc > 3MIP units which will be changed later on.
222 if (adcpre[jjsort] > 4500.)
230 pmdclout = new AliPMDclupid(idet,ismn,clusdata);
231 pmdcontout->Add(pmdclout);
234 for(Int_t jj=0; jj<cpvcounter; jj++)
237 // PID for CPV clusters is 1
241 clusdata[0] = xpadcpv[jj];
242 clusdata[1] = ypadcpv[jj];
243 clusdata[2] = adccpv[jj];
244 clusdata[3] = ncellcpv[jj];
245 clusdata[4] = radcpv[jj];
248 pmdclout = new AliPMDclupid(idet,ismn,clusdata);
249 pmdcontout->Add(pmdclout);
252 // delete all the pointers
267 // -----------------------------------------------------------------------
268 void AliPMDDiscriminator::NNDiscrimination()
270 // This method does discrimination using Neural Network technique
273 // -----------------------------------------------------------------------
274 void AliPMDDiscriminator::SetDiscrimination(Int_t idiscrim)
278 // -----------------------------------------------------------------------