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d15a28e7 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
d72dfbc3 | 18 | /* $Log: |
19 | 1 October 2000. Yuri Kharlov: | |
20 | AreNeighbours() | |
21 | PPSD upper layer is considered if number of layers>1 | |
22 | ||
23 | 18 October 2000. Yuri Kharlov: | |
24 | AliPHOSClusterizerv1() | |
25 | CPV clusterizing parameters added | |
26 | ||
27 | MakeClusters() | |
28 | After first PPSD digit remove EMC digits only once | |
29 | */ | |
30 | ||
d15a28e7 | 31 | //_________________________________________________________________________ |
b2a60966 | 32 | // Implementation version 1 of the clusterization algorithm |
33 | // | |
34 | //*-- Author: Yves Schutz (SUBATECH) | |
d15a28e7 | 35 | ////////////////////////////////////////////////////////////////////////////// |
36 | ||
37 | // --- ROOT system --- | |
38 | ||
39 | #include "TMath.h" | |
40 | ||
41 | // --- Standard library --- | |
42 | ||
de9ec31b | 43 | #include <iostream.h> |
d15a28e7 | 44 | |
45 | // --- AliRoot header files --- | |
46 | ||
47 | #include "AliPHOSClusterizerv1.h" | |
48 | #include "AliPHOSDigit.h" | |
49 | #include "AliPHOSEmcRecPoint.h" | |
50 | #include "AliPHOSPpsdRecPoint.h" | |
0b06c60d | 51 | #include "AliPHOSCpvRecPoint.h" |
d15a28e7 | 52 | #include "AliPHOSv0.h" |
53 | #include "AliRun.h" | |
54 | ||
55 | ClassImp(AliPHOSClusterizerv1) | |
56 | ||
57 | //____________________________________________________________________________ | |
58 | AliPHOSClusterizerv1::AliPHOSClusterizerv1() | |
59 | { | |
b2a60966 | 60 | // default ctor (to be used) |
61 | ||
d15a28e7 | 62 | fA = 0.; |
63 | fB = 0.01 ; | |
6b9b768e | 64 | fGeom = AliPHOSGeometry::GetInstance(); |
d15a28e7 | 65 | fNumberOfEmcClusters = 0 ; |
66 | fNumberOfPpsdClusters = 0 ; | |
67 | fEmcClusteringThreshold = 0.1; | |
68 | fEmcEnergyThreshold = 0.01; | |
d72dfbc3 | 69 | fPpsdClusteringThreshold = 0.0; |
70 | fPpsdEnergyThreshold = 0.1; | |
d15a28e7 | 71 | fW0 = 4.5 ; |
72 | fLocMaxCut = 0.06 ; | |
d72dfbc3 | 73 | fW0CPV = 4.5 ; |
74 | fLocMaxCutCPV = 0.06 ; | |
d15a28e7 | 75 | } |
76 | ||
77 | //____________________________________________________________________________ | |
78 | Int_t AliPHOSClusterizerv1::AreNeighbours(AliPHOSDigit * d1, AliPHOSDigit * d2) | |
79 | { | |
b2a60966 | 80 | // Gives the neighbourness of two digits = 0 are not neighbour but continue searching |
81 | // = 1 are neighbour | |
82 | // = 2 are not neighbour but do not continue searching | |
83 | // neighbours are defined as digits having at least common vertex | |
84 | // The order of d1 and d2 is important: first (d1) should be a digit already in a cluster | |
85 | // which is compared to a digit (d2) not yet in a cluster | |
86 | ||
d15a28e7 | 87 | Int_t rv = 0 ; |
88 | ||
d15a28e7 | 89 | Int_t relid1[4] ; |
6b9b768e | 90 | fGeom->AbsToRelNumbering(d1->GetId(), relid1) ; |
d15a28e7 | 91 | |
92 | Int_t relid2[4] ; | |
6b9b768e | 93 | fGeom->AbsToRelNumbering(d2->GetId(), relid2) ; |
d15a28e7 | 94 | |
95 | if ( (relid1[0] == relid2[0]) && (relid1[1]==relid2[1]) ) { // inside the same PHOS module and the same PPSD Module | |
92862013 | 96 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
97 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 98 | |
92862013 | 99 | if (( coldiff <= 1 ) && ( rowdiff <= 1 )){ |
d15a28e7 | 100 | rv = 1 ; |
101 | } | |
102 | else { | |
103 | if((relid2[2] > relid1[2]) && (relid2[3] > relid1[3]+1)) | |
104 | rv = 2; // Difference in row numbers is too large to look further | |
105 | } | |
106 | ||
107 | } | |
108 | else { | |
109 | ||
110 | if( (relid1[0] < relid2[0]) || (relid1[1] < relid2[1]) ) | |
111 | rv=2 ; | |
112 | ||
113 | } | |
d72dfbc3 | 114 | |
115 | //Do NOT clusterize upper PPSD | |
116 | if(fGeom->GetNumberOfCPVLayers() > 1 && | |
117 | relid1[1] > 0 && | |
118 | relid1[1] < fGeom->GetNumberOfPadsPhi()*fGeom->GetNumberOfPadsPhi() ) rv = 2 ; | |
119 | ||
d15a28e7 | 120 | return rv ; |
121 | } | |
122 | ||
123 | //____________________________________________________________________________ | |
124 | void AliPHOSClusterizerv1::FillandSort(const DigitsList * dl, TObjArray * tl) | |
125 | { | |
b2a60966 | 126 | // Copies the digits with energy above thershold and sorts the list |
d15a28e7 | 127 | // according to increasing Id number |
128 | ||
d15a28e7 | 129 | Int_t relid[4] ; |
130 | ||
131 | TIter next(dl) ; | |
132 | AliPHOSDigit * digit ; | |
133 | ||
134 | while ( (digit = (AliPHOSDigit *)next()) ) { | |
cf239357 | 135 | |
136 | // cout << " clusterizerv1 " << endl ; | |
137 | // int nprim = digit->GetNprimary() ; | |
138 | // int * aprim = digit->GetPrimary() ; | |
139 | // for ( int ii = 0 ; ii < nprim ; ii++) | |
140 | // cout << ii << " prim = " << aprim[ii] << endl ; | |
141 | ||
d15a28e7 | 142 | Int_t id = digit->GetId() ; |
143 | Float_t ene = Calibrate(digit->GetAmp()) ; | |
6b9b768e | 144 | fGeom->AbsToRelNumbering(id, relid) ; |
d15a28e7 | 145 | if(relid[1]==0){ // EMC |
6a3f1304 | 146 | if ( ene > fEmcEnergyThreshold ) |
d15a28e7 | 147 | tl->Add(digit) ; |
148 | } | |
149 | ||
150 | else { //Ppsd | |
151 | if ( ene > fPpsdEnergyThreshold ) | |
6a3f1304 | 152 | tl->Add(digit) ; |
d15a28e7 | 153 | } |
154 | ||
155 | } | |
156 | tl->Sort() ; | |
157 | } | |
158 | ||
159 | //____________________________________________________________________________ | |
160 | void AliPHOSClusterizerv1:: GetNumberOfClustersFound(Int_t * numb) | |
161 | { | |
b2a60966 | 162 | // Fills numb with the number of EMC (numb[0]) clusters found |
163 | // PPSD (numb[1]) clusters found | |
164 | ||
165 | numb[0] = fNumberOfEmcClusters ; | |
166 | numb[1] = fNumberOfPpsdClusters ; | |
d15a28e7 | 167 | } |
168 | ||
169 | //____________________________________________________________________________ | |
170 | Bool_t AliPHOSClusterizerv1::IsInEmc(AliPHOSDigit * digit) | |
171 | { | |
b2a60966 | 172 | // Tells if (true) or not (false) the digit is in a PHOS-EMC module |
173 | ||
9f616d61 | 174 | Bool_t rv = kFALSE ; |
d15a28e7 | 175 | |
d15a28e7 | 176 | Int_t relid[4] ; |
6b9b768e | 177 | fGeom->AbsToRelNumbering(digit->GetId(), relid) ; |
d15a28e7 | 178 | |
179 | if ( relid[1] == 0 ) | |
180 | rv = kTRUE; | |
181 | ||
182 | return rv ; | |
183 | } | |
184 | ||
185 | //____________________________________________________________________________ | |
88714635 | 186 | void AliPHOSClusterizerv1::MakeClusters(const DigitsList * dl, |
187 | AliPHOSRecPoint::RecPointsList * emcl, | |
188 | AliPHOSRecPoint::RecPointsList * ppsdl) | |
d15a28e7 | 189 | { |
b2a60966 | 190 | // Steering method to construct the clusters stored in a list of Reconstructed Points |
191 | // A cluster is defined as a list of neighbour digits | |
c161df70 | 192 | |
193 | fNumberOfEmcClusters = 0 ; | |
194 | fNumberOfPpsdClusters = 0 ; | |
195 | ||
d15a28e7 | 196 | // Fill and sort the working digits list |
92862013 | 197 | TObjArray tempodigitslist( dl->GetEntries() ) ; |
198 | FillandSort(dl, &tempodigitslist) ; | |
d15a28e7 | 199 | |
200 | // Clusterization starts | |
92862013 | 201 | TIter nextdigit(&tempodigitslist) ; |
d15a28e7 | 202 | AliPHOSDigit * digit ; |
92862013 | 203 | Bool_t notremoved = kTRUE ; |
6ad0bfa0 | 204 | |
d15a28e7 | 205 | while ( (digit = (AliPHOSDigit *)nextdigit()) ) { // scan over the list of digits |
206 | AliPHOSRecPoint * clu ; | |
c161df70 | 207 | |
83974468 | 208 | AliPHOSDigit ** clusterdigitslist = new AliPHOSDigit*[dl->GetEntries()] ; |
d15a28e7 | 209 | Int_t index ; |
d72dfbc3 | 210 | if (( ( IsInEmc(digit) ) && ( Calibrate(digit->GetAmp() ) > fEmcClusteringThreshold ) ) || |
9f616d61 | 211 | ( ( !IsInEmc(digit) ) && ( Calibrate(digit->GetAmp() ) > fPpsdClusteringThreshold ) ) ) { |
d15a28e7 | 212 | |
213 | Int_t iDigitInCluster = 0 ; | |
214 | ||
6ad0bfa0 | 215 | if ( IsInEmc(digit) ) { |
83974468 | 216 | // start a new EMC RecPoint |
d72dfbc3 | 217 | if(fNumberOfEmcClusters >= emcl->GetSize()) emcl->Expand(2*fNumberOfEmcClusters+1) ; |
83974468 | 218 | (*emcl)[fNumberOfEmcClusters] = new AliPHOSEmcRecPoint(fW0, fLocMaxCut) ; |
6b9b768e | 219 | clu = (AliPHOSEmcRecPoint *) emcl->At(fNumberOfEmcClusters) ; |
9f616d61 | 220 | fNumberOfEmcClusters++ ; |
221 | clu->AddDigit(*digit, Calibrate(digit->GetAmp())) ; | |
83974468 | 222 | clusterdigitslist[iDigitInCluster] = digit ; |
9f616d61 | 223 | iDigitInCluster++ ; |
92862013 | 224 | tempodigitslist.Remove(digit) ; |
ca77b032 | 225 | |
d72dfbc3 | 226 | } else { |
83974468 | 227 | |
228 | // start a new PPSD cluster | |
d72dfbc3 | 229 | if(fNumberOfPpsdClusters >= ppsdl->GetSize()) ppsdl->Expand(2*fNumberOfPpsdClusters+1); |
230 | if (strcmp(fGeom->GetName(),"GPS2") == 0) { | |
231 | (*ppsdl)[fNumberOfPpsdClusters] = new AliPHOSPpsdRecPoint() ; | |
232 | clu = (AliPHOSPpsdRecPoint *) ppsdl->At(fNumberOfPpsdClusters) ; | |
233 | } | |
234 | else if (strcmp(fGeom->GetName(),"IHEP") == 0) { | |
0b06c60d | 235 | (*ppsdl)[fNumberOfPpsdClusters] = new AliPHOSCpvRecPoint(fW0CPV, fLocMaxCutCPV) ; |
236 | clu = (AliPHOSCpvRecPoint *) ppsdl->At(fNumberOfPpsdClusters) ; | |
d72dfbc3 | 237 | } |
9f616d61 | 238 | fNumberOfPpsdClusters++ ; |
6ad0bfa0 | 239 | clu->AddDigit(*digit, Calibrate(digit->GetAmp()) ) ; |
83974468 | 240 | clusterdigitslist[iDigitInCluster] = digit ; |
9f616d61 | 241 | iDigitInCluster++ ; |
92862013 | 242 | tempodigitslist.Remove(digit) ; |
d15a28e7 | 243 | nextdigit.Reset() ; |
244 | ||
9f616d61 | 245 | // Here we remove resting EMC digits, which cannot make cluster |
246 | ||
92862013 | 247 | if( notremoved ) { |
9f616d61 | 248 | while( ( digit = (AliPHOSDigit *)nextdigit() ) ) { |
9f616d61 | 249 | if( IsInEmc(digit) ) |
92862013 | 250 | tempodigitslist.Remove(digit) ; |
d15a28e7 | 251 | else |
252 | break ; | |
d72dfbc3 | 253 | } |
254 | notremoved = kFALSE ; | |
255 | } | |
d15a28e7 | 256 | |
257 | } // else | |
258 | ||
259 | nextdigit.Reset() ; | |
260 | ||
261 | AliPHOSDigit * digitN ; | |
262 | index = 0 ; | |
9f616d61 | 263 | while (index < iDigitInCluster){ // scan over digits already in cluster |
83974468 | 264 | digit = clusterdigitslist[index] ; |
9f616d61 | 265 | index++ ; |
d15a28e7 | 266 | while ( (digitN = (AliPHOSDigit *)nextdigit()) ) { // scan over the reduced list of digits |
d72dfbc3 | 267 | Int_t ineb = AreNeighbours(digit, digitN); // call (digit,digitN) in THAT oder !!!!! |
d15a28e7 | 268 | switch (ineb ) { |
9f616d61 | 269 | case 0 : // not a neighbour |
d72dfbc3 | 270 | break ; |
9f616d61 | 271 | case 1 : // are neighbours |
83974468 | 272 | clu->AddDigit(*digitN, Calibrate( digitN->GetAmp() ) ) ; |
273 | clusterdigitslist[iDigitInCluster] = digitN ; | |
9f616d61 | 274 | iDigitInCluster++ ; |
92862013 | 275 | tempodigitslist.Remove(digitN) ; |
d15a28e7 | 276 | break ; |
9f616d61 | 277 | case 2 : // too far from each other |
d15a28e7 | 278 | goto endofloop; |
279 | } // switch | |
280 | ||
281 | } // while digitN | |
282 | ||
283 | endofloop: ; | |
284 | nextdigit.Reset() ; | |
285 | ||
286 | } // loop over cluster | |
d72dfbc3 | 287 | } //below energy theshold |
288 | ||
31aa6d6c | 289 | delete[] clusterdigitslist ; |
290 | ||
d15a28e7 | 291 | } // while digit |
292 | ||
92862013 | 293 | tempodigitslist.Clear() ; |
83974468 | 294 | |
c161df70 | 295 | ppsdl->Sort() ; |
296 | Int_t index ; | |
297 | for(index = 0; index < ppsdl->GetEntries(); index++) | |
298 | ((AliPHOSPpsdRecPoint *)ppsdl->At(index))->SetIndexInList(index) ; | |
d15a28e7 | 299 | } |
300 | ||
301 | //____________________________________________________________________________ | |
302 | void AliPHOSClusterizerv1::PrintParameters() | |
303 | { | |
b2a60966 | 304 | // Print the energy thresholds |
305 | ||
d15a28e7 | 306 | cout << "PHOS Clusterizer version 1 :" << endl |
307 | << " EMC Clustering threshold = " << fEmcClusteringThreshold << endl | |
308 | << " EMC Energy threshold = " << fEmcEnergyThreshold << endl | |
309 | << " PPSD Clustering threshold = " << fPpsdClusteringThreshold << endl | |
310 | << " PPSD Energy threshold = " << fPpsdEnergyThreshold << endl ; | |
311 | } |