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1 | /************************************************************************** | |
2 | * This file is property of and copyright by * | |
3 | * the Relativistic Heavy Ion Group (RHIG), Yale University, US, 2009 * | |
4 | * * | |
5 | * Primary Author: Per Thomas Hille <perthomas.hille@yale.edu> * | |
6 | * * | |
7 | * Contributors are mentioned in the code where appropriate. * | |
8 | * Please report bugs to perthomas.hille@yale.edu * | |
9 | * * | |
10 | * Permission to use, copy, modify and distribute this software and its * | |
11 | * documentation strictly for non-commercial purposes is hereby granted * | |
12 | * without fee, provided that the above copyright notice appears in all * | |
13 | * copies and that both the copyright notice and this permission notice * | |
14 | * appear in the supporting documentation. The authors make no claims * | |
15 | * about the suitability of this software for any purpose. It is * | |
16 | * provided "as is" without express or implied warranty. * | |
17 | **************************************************************************/ | |
18 | ||
19 | ||
20 | // The Peak-Finder algorithm | |
21 | // The amplitude is extracted as a | |
22 | // weighted sum of the samples using the | |
23 | // best possible weights. | |
24 | // The wights is calculated only once and the | |
25 | // Actual extraction of amplitude and peak position | |
26 | // Is done with a simple vector multiplication, allowing for | |
27 | // Extreemely fast computations. | |
28 | ||
29 | #include "AliCaloRawAnalyzerPeakFinder.h" | |
30 | #include "AliCaloBunchInfo.h" | |
31 | #include "AliCaloFitResults.h" | |
32 | #include "TMath.h" | |
33 | #include "AliLog.h" | |
34 | #include "AliCDBEntry.h" | |
35 | #include "AliCDBManager.h" | |
36 | #include "TFile.h" | |
37 | #include "AliCaloPeakFinderVectors.h" | |
38 | ||
39 | using namespace std; | |
40 | ||
41 | ||
42 | ClassImp( AliCaloRawAnalyzerPeakFinder ) | |
43 | ||
44 | ||
45 | AliCaloRawAnalyzerPeakFinder::AliCaloRawAnalyzerPeakFinder() :AliCaloRawAnalyzer("Peak-Finder", "PF"), | |
46 | fAmp(0), | |
47 | fPeakFinderVectors(0), | |
48 | fRunOnAlien(false) | |
49 | { | |
50 | //Comment | |
51 | InitOCDB(fRunOnAlien); | |
52 | fPeakFinderVectors = new AliCaloPeakFinderVectors() ; | |
53 | ResetVectors(); | |
54 | LoadVectorsOCDB(); | |
55 | } | |
56 | ||
57 | ||
58 | void | |
59 | AliCaloRawAnalyzerPeakFinder::InitOCDB(bool alien) const | |
60 | { | |
61 | // Setting the default OCDB pathe depending on wether we work locally or on the GRID. | |
62 | AliCDBManager::Instance()->SetDefaultStorage( alien == true ? "alien://$ALICE_ROOT/OCDB" : "local://$ALICE_ROOT/OCDB"); | |
63 | AliCDBManager::Instance()->SetRun(100); | |
64 | } | |
65 | ||
66 | ||
67 | void | |
68 | AliCaloRawAnalyzerPeakFinder::ResetVectors() | |
69 | { | |
70 | //As name implies | |
71 | for(int i=0; i < MAXSTART; i++) | |
72 | { | |
73 | for(int j=0; j < SAMPLERANGE; j++ ) | |
74 | { | |
75 | for(int k=0; k < 100; k++ ) | |
76 | { | |
77 | fPFAmpVectors[i][j][k] = 0; | |
78 | fPFTofVectors[i][j][k] = 0; | |
79 | fPFAmpVectorsCoarse[i][j][k] = 0; | |
80 | fPFTofVectorsCoarse[i][j][k] = 0; | |
81 | } | |
82 | } | |
83 | } | |
84 | } | |
85 | ||
86 | ||
87 | AliCaloRawAnalyzerPeakFinder::~AliCaloRawAnalyzerPeakFinder() | |
88 | { | |
89 | //comment | |
90 | } | |
91 | ||
92 | ||
93 | ||
94 | Double_t | |
95 | AliCaloRawAnalyzerPeakFinder::ScanCoarse(const Double_t *const array, const int length ) const | |
96 | { | |
97 | // Fisrt (coarce) estimate of Amplitude using the Peak-Finder. | |
98 | // The output of the first iteration is sued to select vectors | |
99 | // for the second iteration. | |
100 | ||
101 | Double_t tmpTof = 0; | |
102 | Double_t tmpAmp= 0; | |
103 | ||
104 | for(int i=0; i < length; i++) | |
105 | { | |
106 | tmpTof += fPFTofVectorsCoarse[0][length][i]*array[i]; | |
107 | tmpAmp += fPFAmpVectorsCoarse[0][length][i]*array[i]; | |
108 | } | |
109 | ||
110 | tmpTof = tmpTof / tmpAmp ; | |
111 | return tmpTof; | |
112 | } | |
113 | ||
114 | ||
115 | AliCaloFitResults | |
116 | AliCaloRawAnalyzerPeakFinder::Evaluate( const vector<AliCaloBunchInfo> &bunchvector, const UInt_t altrocfg1, const UInt_t altrocfg2 ) | |
117 | { | |
118 | // Extracting the amplitude using the Peak-Finder algorithm | |
119 | // The amplitude is a weighted sum of the samples using | |
120 | // optimum weights. | |
121 | ||
122 | short maxampindex; //index of maximum amplitude | |
123 | short maxamp; //Maximum amplitude | |
124 | fAmp = 0; | |
125 | int index = SelectBunch( bunchvector, &maxampindex, &maxamp ); | |
126 | ||
127 | if( index >= 0) | |
128 | { | |
129 | Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed ); | |
130 | Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed ); | |
131 | short timebinOffset = maxampindex - (bunchvector.at( index ).GetLength()-1); | |
132 | ||
133 | if( maxf < fAmpCut || ( maxamp - ped) > fOverflowCut ) // (maxamp - ped) > fOverflowCut = Close to saturation (use low gain then) | |
134 | { | |
135 | return AliCaloFitResults( maxamp, ped, AliCaloFitResults::kCrude, maxf, timebinOffset); | |
136 | } | |
137 | else if ( maxf >= fAmpCut ) | |
138 | { | |
139 | int first = 0; | |
140 | int last = 0; | |
141 | short maxrev = maxampindex - bunchvector.at(index).GetStartBin(); | |
142 | SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxrev, &first, &last); | |
143 | int nsamples = last - first; | |
144 | ||
145 | if( ( nsamples ) >= fNsampleCut ) // no if statement needed really; keep for readability | |
146 | { | |
147 | int startbin = bunchvector.at(index).GetStartBin(); | |
148 | int n = last - first; | |
149 | int pfindex = n - fNsampleCut; | |
150 | pfindex = pfindex > SAMPLERANGE ? SAMPLERANGE : pfindex; | |
151 | ||
152 | int dt = maxampindex - startbin -2; | |
153 | int tmpindex = 0; | |
154 | ||
155 | Float_t tmptof = ScanCoarse( &fReversed[dt] , n ); | |
156 | ||
157 | if( tmptof < -1 ) | |
158 | { | |
159 | tmpindex = 0; | |
160 | } | |
161 | else | |
162 | if( tmptof > -1 && tmptof < 100 ) | |
163 | { | |
164 | tmpindex = 1; | |
165 | } | |
166 | else | |
167 | { | |
168 | tmpindex = 2; | |
169 | } | |
170 | ||
171 | double tof = 0; | |
172 | ||
173 | for(int k=0; k < SAMPLERANGE; k++ ) | |
174 | { | |
175 | tof += fPFTofVectors[0][pfindex][k]*fReversed[ dt +k + tmpindex -1 ]; | |
176 | } | |
177 | ||
178 | for( int i=0; i < SAMPLERANGE; i++ ) | |
179 | { | |
180 | { | |
181 | fAmp += fPFAmpVectors[0][pfindex][i]*fReversed[ dt +i +tmpindex -1 ]; | |
182 | } | |
183 | } | |
184 | if( TMath::Abs( (maxf - fAmp )/maxf ) > 0.1 ) | |
185 | { | |
186 | fAmp = maxf; | |
187 | } | |
188 | ||
189 | tof = timebinOffset - 0.01*tof/fAmp; // clock ticks | |
190 | ||
191 | // use local-array time for chi2 estimate | |
192 | Float_t chi2 = CalculateChi2(fAmp, tof-timebinOffset+maxrev, first, last); | |
193 | Int_t ndf = last - first - 1; // nsamples - 2 | |
194 | return AliCaloFitResults( maxamp, ped , AliCaloFitResults::kFitPar, fAmp, tof, | |
195 | timebinOffset, chi2, ndf, | |
196 | AliCaloFitResults::kDummy, AliCaloFitSubarray(index, maxrev, first, last) ); | |
197 | } | |
198 | else | |
199 | { | |
200 | Float_t chi2 = CalculateChi2(maxf, maxrev, first, last); | |
201 | Int_t ndf = last - first - 1; // nsamples - 2 | |
202 | return AliCaloFitResults( maxamp, ped , AliCaloFitResults::kCrude, maxf, timebinOffset, | |
203 | timebinOffset, chi2, ndf, AliCaloFitResults::kDummy, AliCaloFitSubarray(index, maxrev, first, last) ); | |
204 | } | |
205 | } // ampcut | |
206 | } | |
207 | return AliCaloFitResults(AliCaloFitResults::kInvalid, AliCaloFitResults::kInvalid); | |
208 | } | |
209 | ||
210 | ||
211 | void | |
212 | AliCaloRawAnalyzerPeakFinder::CopyVectors(const AliCaloPeakFinderVectors *const pfv ) | |
213 | { | |
214 | // As name implies | |
215 | ||
216 | if ( pfv != 0) | |
217 | { | |
218 | for(int i = 0; i < MAXSTART ; i++) | |
219 | { | |
220 | for( int j=0; j < SAMPLERANGE; j++) | |
221 | { | |
222 | pfv->GetVector( i, j, fPFAmpVectors[i][j] , fPFTofVectors[i][j], | |
223 | fPFAmpVectorsCoarse[i][j] , fPFTofVectorsCoarse[i][j] ); | |
224 | fPeakFinderVectors->SetVector( i, j, fPFAmpVectors[i][j], fPFTofVectors[i][j], | |
225 | fPFAmpVectorsCoarse[i][j], fPFTofVectorsCoarse[i][j] ); | |
226 | } | |
227 | } | |
228 | } | |
229 | else | |
230 | { | |
231 | AliFatal( "pfv = ZERO !!!!!!!"); | |
232 | } | |
233 | } | |
234 | ||
235 | ||
236 | ||
237 | void | |
238 | AliCaloRawAnalyzerPeakFinder::LoadVectorsOCDB() | |
239 | { | |
240 | //Loading of Peak-Finder vectors from the | |
241 | //Offline Condition Database (OCDB) | |
242 | AliCDBEntry* entry = AliCDBManager::Instance()->Get("EMCAL/Calib/PeakFinder/"); | |
243 | ||
244 | if( entry != 0 ) | |
245 | { | |
246 | AliCaloPeakFinderVectors *pfv = (AliCaloPeakFinderVectors *)entry->GetObject(); | |
247 | CopyVectors( pfv ); | |
248 | } | |
249 | } | |
250 | ||
251 | ||
252 | void | |
253 | AliCaloRawAnalyzerPeakFinder::LoadVectorsASCII() | |
254 | { | |
255 | //Read in the Peak finder vecors from ASCI files | |
256 | for(int i = 0; i < MAXSTART ; i++) | |
257 | { | |
258 | for( int j=0; j < SAMPLERANGE; j++) | |
259 | { | |
260 | char filenameCoarse[256]; | |
261 | char filename[256]; | |
262 | int n = j+fNsampleCut; | |
263 | double start = (double)i+0; | |
264 | ||
265 | sprintf(filename, "%s/EMCAL/vectors-emcal/start%.1fN%dtau0.235fs10dt1.0.txt", getenv("ALICE_ROOT"), start, n); | |
266 | sprintf(filenameCoarse, "%s/EMCAL/vectors-emcal/start%.1fN%dtau0.235fs10dt3.0.txt", getenv("ALICE_ROOT"), start, n); | |
267 | ||
268 | FILE *fp = fopen(filename, "r"); | |
269 | FILE *fpc = fopen(filenameCoarse, "r"); | |
270 | ||
271 | if( fp == 0 ) | |
272 | { | |
273 | AliFatal( Form( "could not open file: %s", filename ) ); | |
274 | } | |
275 | ||
276 | if(fpc == 0) | |
277 | { | |
278 | AliFatal( Form( "could not open file: %s", filenameCoarse ) ); | |
279 | } | |
280 | else | |
281 | { | |
282 | for(int m = 0; m < n ; m++ ) | |
283 | { | |
284 | fscanf(fp, "%lf\t", &fPFAmpVectors[i][j][m] ); | |
285 | fscanf(fpc, "%lf\t", &fPFAmpVectorsCoarse[i][j][m] ); | |
286 | } | |
287 | fscanf(fp, "\n" ); | |
288 | fscanf(fpc, "\n" ); | |
289 | for(int m = 0; m < n ; m++ ) | |
290 | { | |
291 | fscanf(fp, "%lf\t", &fPFTofVectors[i][j][m] ); | |
292 | fscanf(fpc, "%lf\t", &fPFTofVectorsCoarse[i][j][m] ); | |
293 | } | |
294 | ||
295 | fPeakFinderVectors->SetVector( i, j, fPFAmpVectors[i][j], fPFTofVectors[i][j], | |
296 | fPFAmpVectorsCoarse[i][j], fPFTofVectorsCoarse[i][j] ); | |
297 | ||
298 | fclose (fp); | |
299 | fclose (fpc); | |
300 | } | |
301 | } | |
302 | } | |
303 | } | |
304 | ||
305 | ||
306 | void | |
307 | AliCaloRawAnalyzerPeakFinder::WriteRootFile() const | |
308 | { | |
309 | // Utility function to write Peak-Finder vectors to an root file | |
310 | // The output is used to create an OCDB entry. | |
311 | fPeakFinderVectors->PrintVectors(); | |
312 | TFile *f = new TFile("peakfindervectors2.root", "recreate" ); | |
313 | fPeakFinderVectors->Write(); | |
314 | f->Close(); | |
315 | delete f; | |
316 | } |