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48a2e3eb 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 p.t.hille@fys.uio.no *
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// The Peak-Finder algorithm
20// The amplitude is extracted as a
21// weighted sum of the samples using the
22// best possible weights.
23// The wights is calculated only once and the
24// Actual extraction of amplitude and peak position
25// Is done with a simple vector multiplication, allowing for
26// Extreemely fast computations.
27
28#include "AliCaloRawAnalyzerPeakFinderV2.h"
29#include "AliCaloBunchInfo.h"
30#include "AliCaloFitResults.h"
31#include <iostream>
32#include "unistd.h"
33#include "TMath.h"
34#include "AliLog.h"
35
36using namespace std;
37
38ClassImp( AliCaloRawAnalyzerPeakFinderV2 )
39
40AliCaloRawAnalyzerPeakFinderV2::AliCaloRawAnalyzerPeakFinderV2() :AliCaloRawAnalyzer("Peak-FinderV2", "PF")
41// fTof(0),
42// fAmp(0)
43{
44 //comment
45
46 fNsampleCut = 5;
47
48 for(int i=0; i < MAXSTART; i++)
49 {
50 for(int j=0; j < SAMPLERANGE; j++ )
51 {
52 fPFAmpVectors[i][j] = new double[100];
53 fPFTofVectors[i][j] = new double[100];
54 fPFAmpVectorsCoarse[i][j] = new double[100];
55 fPFTofVectorsCoarse[i][j] = new double[100];
56
57
58 for(int k=0; k < 100; k++ )
59 {
60 fPFAmpVectors[i][j][k] = 0;
61 fPFTofVectors[i][j][k] = 0;
62 fPFAmpVectorsCoarse[i][j][k] = 0;
63 fPFTofVectorsCoarse[i][j][k] = 0;
64 }
65 }
66 }
67
68 LoadVectors();
69
70}
71
72
73AliCaloRawAnalyzerPeakFinderV2::~AliCaloRawAnalyzerPeakFinderV2()
74{
75 //comment
76 for(int i=0; i < MAXSTART; i++)
77 {
78 for(int j=0; j < SAMPLERANGE; j++ )
79 {
80 delete[] fPFAmpVectors[i][j];
81 delete[] fPFTofVectors[i][j];
82 delete[] fPFAmpVectorsCoarse[i][j];
83 delete[] fPFTofVectorsCoarse[i][j];
84 }
85 }
86}
87
88
89Double_t
90AliCaloRawAnalyzerPeakFinderV2::ScanCoarse(const Double_t *const array, const int length ) const
91{
92 Double_t tmpTof = 0;
93 Double_t tmpAmp= 0;
94
95 for(int i=0; i < length; i++)
96 {
97 tmpTof += fPFTofVectorsCoarse[0][length][i]*array[i];
98 tmpAmp += fPFAmpVectorsCoarse[0][length][i]*array[i];
99 }
100
101 tmpTof = tmpTof / tmpAmp ;
102 return tmpTof;
103}
104
105
106AliCaloFitResults
107AliCaloRawAnalyzerPeakFinderV2::Evaluate( const vector<AliCaloBunchInfo> &bunchvector, const UInt_t altrocfg1, const UInt_t altrocfg2 )
108{
109 // Extracting the amplitude using the Peak-FinderV2 algorithm
110 // The amplitude is a weighted sum of the samples using
111 // optimum weights.
112
113 short maxampindex; //index of maximum amplitude
114 short maxamp; //Maximum amplitude
115 // fAmp = 0;
116 fAmpA[0] = 0;
117 fAmpA[1] = 0;
118 fAmpA[2] = 0;
119
120 int index = SelectBunch( bunchvector, &maxampindex, &maxamp );
121
122 if( index >= 0)
123 {
124 Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed );
125 Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed );
126
127 if( maxf < fAmpCut || ( maxamp - ped) > 900 ) // (maxamp - ped) > 900 = Close to saturation (use low gain then)
128 {
129 // cout << __FILE__ << __LINE__ <<":, maxamp = " << maxamp << ", ped = "<< ped << ",. maxf = "<< maxf << ", maxampindex = "<< maxampindex << endl;
130 return AliCaloFitResults( maxamp, ped, -1, maxf, maxampindex, -1, -1 );
131 }
132
133 int first;
134 int last;
135
136 if ( maxf > fAmpCut )
137 {
138 SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxampindex - bunchvector.at(index).GetStartBin(), &first, &last);
139 int nsamples = last - first;
140 if( ( nsamples ) >= fNsampleCut )
141 {
142 int startbin = bunchvector.at(index).GetStartBin();
143 int n = last - first;
144 int pfindex = n - fNsampleCut;
145 pfindex = pfindex > SAMPLERANGE ? SAMPLERANGE : pfindex;
146
147 int dt = maxampindex - startbin -1;
148
149
150 // cout << __FILE__ << __LINE__ <<"\t The coarse estimated t0 is " << ScanCoarse( &fReversed[dt] , n ) << endl;
151
152
153
154 // Float_t tmptof = ScanCoarse( &fReversed[dt] , n );
155 // cout << __FILE__ << __LINE__ << "\ttmptof = " << tmptof << endl;
156
157
158 // cout << __FILE__ << __LINE__ << ", dt = " << dt << ",\tmaxamindex = " << maxampindex << "\tstartbin = "<< startbin << endl;
159
160 for( int i=0; i < SAMPLERANGE; i++ )
161 {
162 for( int j = 0; j < 3; j++ )
163 {
164 // fAmpA[j] += fPFAmpVectors[0][pfindex][i]*tmp[j];
165 fAmpA[j] += fPFAmpVectors[0][pfindex][i]*fReversed[ dt +i +j -1 ];
166 }
167 }
168
169 double diff = 9999;
170 int tmpindex = 0;
171
172 for(int k=0; k < 3; k ++)
173 {
174 // cout << __FILE__ << __LINE__ << "amp[="<< k <<"] = " << fAmpA[k] << endl;
175 if( TMath::Abs(fAmpA[k] - ( maxamp - ped) ) < diff)
176 {
177 diff = TMath::Abs(fAmpA[k] - ( maxamp - ped));
178 tmpindex = k;
179 }
180 }
181
182 Float_t tmptof = ScanCoarse( &fReversed[dt] , n );
183
184 // Double_t tofnew = PolTof(tmptof) + ( dt + startbin )*100 ;
185 // int dt = maxampindex - startbin -1;
186
187 // Double_t tofnew = PolTof(tmptof) + startbin*100 ;
188
189 // Double_t tofnew = PolTof(tmptof) + maxampindex*100 ;
190
191
192 // Double_t tofnew = PolTof(tmptof) + (dt + startbin + tmpindex )*100 ;
193 Double_t tofnew = PolTof(tmptof) ;
194
195 // tmptof= tofnew;
196
197 // Double_t tofnew = PolTof(tmptof) + maxampindex ;
198
199
200 if(tmptof < 0 )
201 {
202 cout << __FILE__ << __LINE__ << "\ttmptof = " << tmptof << endl;
203 }
204
205
206 if( tmptof < -1 )
207 {
208 tmpindex = 0;
209 }
210 else
211 if( tmptof > -1 && tmptof < 100 )
212 {
213 tmpindex =1;
214 }
215 else
216 {
217 tmpindex = 2;
218 }
219
220
221
222 double tof = 0;
223
224 for(int k=0; k < SAMPLERANGE; k++ )
225 {
226 tof += fPFTofVectors[0][pfindex][k]*fReversed[ dt +k + tmpindex -1 ];
227 }
228
229 // cout << __FILE__ << __LINE__ << "tofRaw = "<< tof / fAmpA[tmpindex] << endl;
230
231 // tof = tof / fAmpA[tmpindex] + (dt + startbin)*100;
232
233 if( TMath::Abs( (maxf - fAmpA[tmpindex])/maxf ) > 0.1 )
234 {
235 fAmpA[tmpindex] = maxf;
236 }
237
238 // tof = (dt + startbin + tmpindex )*100 - tof/fAmpA[tmpindex]; // ns
239 tof = dt + startbin + tmpindex - 0.01*tof/fAmpA[tmpindex]; // clock ticks
240
241
242 return AliCaloFitResults( maxamp, ped , -1, fAmpA[tmpindex], tof , -2, -3 );
243 }
244 else
245 {
246 return AliCaloFitResults( maxamp, ped , -5, maxf, -6, -7, -8 );
247 }
248 }
249 }
250 // cout << __FILE__ << __LINE__ << "WARNING, returning amp = -1 " << endl;
251 return AliCaloFitResults(-1, -1);
252}
253
254
255Double_t
256AliCaloRawAnalyzerPeakFinderV2::PolTof( const double fx1 ) const
257{
258
259 //Newtons method
260 Double_t tolerance = 0.01;
261 // cout << "************************" << endl;
262 Double_t fx2 = PolValue( fx1 );
263 Double_t tmpfx1 = fx1;
264
265 while( TMath::Abs( fx2 - fx1 ) > tolerance )
266 {
267 Double_t der = PolDerivative( tmpfx1 );
268 // tmpx = der*( x - val) +x;
269 tmpfx1 = ( fx1 - fx2)/der +tmpfx1;
270
271 // tmpx = der*( val - tmpx ) +tmpx;
272 fx2 = PolValue( tmpfx1 );
273 // cout << __FILE__ << __LINE__ << "Der =\t" << der << " x=\t"<<x<<"\tval="<<val << endl;
274 // cout << __FILE__ << __LINE__ << "Der =\t" << der << " tmpx=\t"<< tmpfx1 <<"\tval="<< fx2 << endl;
275 }
276
277 // cout << __FILE__ << __LINE__ << "CONVERGED !! fx1 = "<< fx1 <<" tmpfx1 = "<< tmpfx1 <<" f(tmpfx1) = "<< fx2 << endl;
278
279 // cout << "************************" << endl;
280
281 return tmpfx1;
282
283}
284
285
286Double_t
287AliCaloRawAnalyzerPeakFinderV2::PolValue(const Double_t x) const
288{
289 static Double_t p0 = -55.69;
290 static Double_t p1 = 4.718;
291 static Double_t p2 = -0.05587;
292 static Double_t p3 = 0.0003185;
293 static Double_t p4 = -7.91E-7;
294 static Double_t p5 = 7.576E-10;
295
296 // return p0 + p1*x + p2*TMath::Power(x, 2) + p3*TMath::Power(x, 3) + p4*TMath::Power(x, 4) + p5*TMath::Power(x, 5);
297
298 return p0 + p1*x + p2*x*x + p3*x*x*x + p4*x*x*x*x + p5*x*x*x*x*x;
299
300}
301
302
303Double_t
304AliCaloRawAnalyzerPeakFinderV2::PolDerivative(const Double_t x) const
305{
306 static Double_t dp0 = 0;
307 static Double_t dp1 = 4.718;
308 static Double_t dp2 = -0.11174;
309 static Double_t dp3 = 0.0009555;
310 static Double_t dp4 = -3.164E-6;
311 static Double_t dp5 = 3.788E-9;
312
313 // return dp0 + dp1 + dp2*x + dp3*TMath::Power(x, 2) + dp4*TMath::Power(x, 3) + dp5*TMath::Power(x, 4);
314
315
316
317 return dp0 + dp1 + dp2*x + dp3*x*x + dp4*x*x*x + dp5*x*x*x*x;
318
319}
320
321
322void
323AliCaloRawAnalyzerPeakFinderV2::LoadVectors()
324{
325 //Read in the Peak finder vecors from file
326 for(int i = 0; i < MAXSTART ; i++)
327 {
328 for( int j=0; j < SAMPLERANGE; j++)
329 {
330 char filenameCoarse[256];
331 char filename[256];
332
333 int n = j+fNsampleCut;
334
335 // double start = (double)i+0.5;
336 double start = (double)i+0;
337
338 sprintf(filename, "%s/EMCAL/vectors-emcal/start%.1fN%dtau0.235fs10dt1.0.txt", getenv("ALICE_ROOT"), start, n);
339 sprintf(filenameCoarse, "%s/EMCAL/vectors-emcal/start%.1fN%dtau0.235fs10dt3.0.txt", getenv("ALICE_ROOT"), start, n);
340
341 FILE *fp = fopen(filename, "r");
342 FILE *fpc = fopen(filenameCoarse, "r");
343
344 if( fp == 0 )
345 {
346 AliFatal( Form( "could not open file: %s", filename ) );
347 }
348
349 if(fpc == 0)
350 {
351 AliFatal( Form( "could not open file: %s", filenameCoarse ) );
352 }
353 else
354 {
355 for(int m = 0; m < n ; m++ )
356 {
357 cout << __FILE__ << __LINE__ << "i="<<i <<"\tj=" <<j << "\tm=" << m << endl;
358
359 fscanf(fp, "%lf\t", &fPFAmpVectors[i][j][m] );
360 // fPFAmpVectorsCoarse[i][j][m] = 1;
361 fscanf(fpc, "%lf\t", &fPFAmpVectorsCoarse[i][j][m] );
362 }
363
364 fscanf(fp, "\n" );
365 fscanf(fpc, "\n" );
366
367 for(int m = 0; m < n ; m++ )
368 {
369 // fPFTofVectors[i][j][m] = 1;
370
371 fscanf(fp, "%lf\t", &fPFTofVectors[i][j][m] );
372 fscanf(fpc, "%lf\t", &fPFTofVectorsCoarse[i][j][m] );
373 // fPFTofVectorsCoarse[i][j][m] = 1;
374 }
375 fclose (fp);
376 fclose (fpc);
377 }
378 }
379 }
380}
381
382