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695dc56f | 1 | #include "AliGenHBTosl.h" |
2 | //__________________________________________________________ | |
3 | ///////////////////////////////////////////////////////////// | |
4 | // // | |
5 | // class AliGenHBTosl // | |
6 | // // | |
7 | // Genarator simulating particle correlations // | |
8 | // // | |
9 | // The main idea of the generator is to produce particles // | |
10 | // according to some distribution of two particle // | |
11 | // property. In HBT they are qout,qsie and qlong. // | |
12 | // In order to be able to generate signal that produces // | |
13 | // given two particle correlation background must be // | |
14 | // known before in order to produce the shape of signal // | |
15 | // to randomize given distribution from. // | |
16 | // // | |
17 | // The generator works as follows: // | |
18 | // 1. Coarse Background (fQCoarseBackground) is generated // | |
19 | // ade from the particles // | |
20 | // given by the external generator (variable // | |
21 | // fGenerator) by the mixing technique. // | |
22 | // 2. Coarse signal is prduced by multiplying Coarse // | |
23 | // background by a required function // | |
24 | // See method FillCoarseSignal // | |
25 | // 3. Signal is randomized out of the coarse signal // | |
26 | // histogram (two particle property). First particle // | |
27 | // is taken from the external generator, and the // | |
28 | // second one is CALCULATED on the basis of the first // | |
29 | // one and the two particle property (qout,qside,qlong)// | |
30 | // Background is made by the mixing out of the // | |
31 | // genereted signal events. // | |
32 | // This step is cotinued up to the moment signal // | |
33 | // histogram has enough statistics (data member // | |
34 | // fMinFill) // | |
35 | // See method StartSignalPass1() // | |
36 | // 4. chi is calculated for each bin (chiarray variqable) // | |
37 | // (not the chi2 because sign is important) // | |
38 | // Two particle prioperty // | |
39 | // (qout,qside,qlong) is chosen at the points that // | |
40 | // chi is the smallest. First particle is taken from // | |
41 | // the the external generator (fGenerator) and second's / | |
42 | // momenta are caclulated out of their momenta and // | |
43 | // (qout,qside,qlong). Background is updated // | |
44 | // continuesely for all the events. This step is // | |
45 | // continued until stability conditions are fullfiled // | |
46 | // or maximum number of iteration is reached. // | |
47 | // 5. The same as step 4 but events are stored. // | |
48 | // // | |
49 | //////////////////////////////////////////////////////////// | |
50 | ||
695dc56f | 51 | #include <TCanvas.h> |
52 | ||
53 | ||
54 | #include <TH3D.h> | |
55 | #include <TList.h> | |
56 | #include <TPDGCode.h> | |
57 | #include <TParticle.h> | |
58 | #include <AliStack.h> | |
59 | #include <TMath.h> | |
60 | #include <TVector3.h> | |
61 | #include <TStopwatch.h> | |
62 | #include <TFile.h> | |
63 | ||
64 | #include "AliGenCocktailAfterBurner.h" | |
65 | #include "AliGeVSimParticle.h" | |
66 | #include "AliGenGeVSim.h" | |
67 | #include "AliGenHIJINGpara.h" | |
68 | ||
5fdc214b | 69 | |
695dc56f | 70 | /***********************************************************/ |
71 | ClassImp(AliGenHBTosl) | |
72 | ||
73 | AliGenHBTosl::AliGenHBTosl(): | |
74 | AliGenerator(), | |
75 | fQCoarseBackground(0x0), | |
76 | fQCoarseSignal(0x0), | |
77 | fQSignal(0x0), | |
78 | fQBackground(0x0), | |
79 | fQSecondSignal(0x0), | |
80 | fQSecondBackground(0x0), | |
5fdc214b | 81 | fQRange(0.06), |
695dc56f | 82 | fQNBins(60), |
83 | fGenerator(0x0), | |
84 | fBufferSize(5), | |
5fdc214b | 85 | fNBinsToScale(Int_t(fQNBins*0.1)), |
f5b253b3 | 86 | fDebug(0), |
5fdc214b | 87 | fMaxIterations(1000), |
695dc56f | 88 | fMaxChiSquereChange(0.01), |
89 | fMaxChiSquerePerNDF(1.5), | |
90 | fQRadius(8.0), | |
91 | fPID(kPiPlus), | |
92 | fSamplePhiMin(-0.01), | |
93 | fSamplePhiMax(TMath::TwoPi()+0.01), | |
94 | fSignalRegion(0.0), | |
5fdc214b | 95 | fMinFill(1000), |
96 | fLogFile(0x0) | |
695dc56f | 97 | { |
98 | //default constructor | |
99 | } | |
100 | /***********************************************************/ | |
101 | ||
102 | AliGenHBTosl::AliGenHBTosl(Int_t n, Int_t pid): | |
103 | AliGenerator(n), | |
104 | fQCoarseBackground(0x0), | |
105 | fQCoarseSignal(0x0), | |
106 | fQSignal(0x0), | |
107 | fQBackground(0x0), | |
108 | fQSecondSignal(0x0), | |
109 | fQSecondBackground(0x0), | |
5fdc214b | 110 | fQRange(0.06), |
695dc56f | 111 | fQNBins(60), |
112 | fGenerator(0x0), | |
113 | fBufferSize(5), | |
5fdc214b | 114 | fNBinsToScale(Int_t(fQNBins*0.1)), |
f5b253b3 | 115 | fDebug(0), |
695dc56f | 116 | fSignalShapeCreated(kFALSE), |
5fdc214b | 117 | fMaxIterations(1000), |
695dc56f | 118 | fMaxChiSquereChange(0.01), |
119 | fMaxChiSquerePerNDF(1.5), | |
120 | fQRadius(8.0), | |
121 | fPID(pid), | |
122 | fSamplePhiMin(-0.01), | |
123 | fSamplePhiMax(TMath::TwoPi()+0.01), | |
124 | fSignalRegion(0.0), | |
5fdc214b | 125 | fMinFill(1000), |
126 | fLogFile(0x0) | |
695dc56f | 127 | { |
128 | //default constructor | |
129 | } | |
130 | /***********************************************************/ | |
131 | ||
132 | AliGenHBTosl::~AliGenHBTosl() | |
133 | { | |
134 | //destructor | |
135 | delete fQCoarseSignal; | |
136 | delete fQCoarseBackground; | |
137 | delete fQSignal; | |
138 | delete fQBackground; | |
139 | delete fGenerator; | |
140 | delete fQSecondSignal; | |
141 | delete fQSecondBackground; | |
5fdc214b | 142 | delete fLogFile; |
695dc56f | 143 | } |
5fdc214b | 144 | /***********************************************************/ |
695dc56f | 145 | |
146 | void AliGenHBTosl::Init() | |
147 | { | |
148 | //Initializes generator | |
149 | if (fGenerator == 0x0) | |
150 | { | |
151 | ||
152 | AliGenHIJINGpara* bkggen = new AliGenHIJINGpara(fNpart*4); | |
153 | fGenerator = bkggen; | |
154 | ||
155 | /* | |
156 | AliGenGeVSim * gevsim = new AliGenGeVSim(0.0); | |
157 | AliGeVSimParticle* kplus = new AliGeVSimParticle(fPID,1,fNpart, 0.17, 0.9); | |
158 | gevsim->AddParticleType(kplus); | |
159 | ||
160 | fGenerator = gevsim; | |
161 | */ | |
162 | ||
163 | /* | |
164 | ||
165 | AliMevSimConfig *c = new AliMevSimConfig(1); | |
166 | c->SetRectPlane(1); // reaction plane control, model 4 | |
167 | c->SetGrid(80,80); | |
168 | ||
169 | AliGenMevSim *mevsim = new AliGenMevSim(c); | |
170 | mevsim->SetPtRange(0.001, 3); | |
171 | mevsim->SetMomentumRange(0.1, 3); | |
172 | mevsim->SetTrackingFlag(0); | |
173 | mevsim->SetOrigin(0.0, 0.0, 0.0); | |
174 | mevsim->SetSigma(0.0, 0.0, 0.0); | |
175 | AliMevSimParticle *kplus = new AliMevSimParticle(kKPlus, fNpart, 0, 0.25, 0.0, 2, 0.15, 0.0, 0.0 ); | |
176 | mevsim->AddParticleType(kplus); | |
177 | fGenerator = mevsim; | |
178 | */ | |
179 | ||
180 | fGenerator->SetOrigin(fOrigin[0],fOrigin[1],fOrigin[2]); | |
5fdc214b | 181 | static const Double_t kDegToRadCF = 180./TMath::Pi(); |
695dc56f | 182 | fGenerator->SetMomentumRange(fPtMin,fPtMax); |
5fdc214b | 183 | fGenerator->SetPhiRange(kDegToRadCF*fPhiMin,kDegToRadCF*fPhiMax); |
695dc56f | 184 | fGenerator->SetYRange(fYMin,fYMax); |
5fdc214b | 185 | fGenerator->SetThetaRange(kDegToRadCF*fThetaMin,kDegToRadCF*fThetaMax); |
695dc56f | 186 | fGenerator->Init(); |
187 | ||
188 | } | |
189 | ||
5fdc214b | 190 | // fQCoarseBackground = new TH3D("fQCoarseBackground","",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); |
191 | // fQCoarseSignal = new TH3D("fQCoarseSignal","fQCoarseSignal",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); | |
192 | // fQCoarseBackground->Sumw2(); | |
193 | // fQCoarseSignal->Sumw2(); | |
194 | ||
695dc56f | 195 | fQSignal = new TH3D("fQSignal1","fQSignal",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); |
196 | fQBackground = new TH3D("fQBackground1","fQBackground",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); | |
197 | ||
198 | fQSecondSignal = new TH3D("fQSignal2","fQSignal",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); | |
199 | fQSecondBackground = new TH3D("fQBackground2","fQBackground",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); | |
200 | ||
695dc56f | 201 | fQSignal->Sumw2(); |
202 | fQBackground->Sumw2(); | |
203 | fQSecondSignal->Sumw2(); | |
204 | fQSecondBackground->Sumw2(); | |
5fdc214b | 205 | |
206 | fLogFile = new ofstream("BadEvent",ios::out); | |
207 | ||
695dc56f | 208 | } |
209 | /***********************************************************/ | |
210 | ||
211 | void AliGenHBTosl::Generate() | |
212 | { | |
213 | //the main method | |
5fdc214b | 214 | |
215 | ofstream& logfile = *fLogFile; | |
216 | logfile<<"Generate"<<"Attempts to generate "<<fNpart<<" particles."; | |
217 | ||
218 | ||
695dc56f | 219 | if (fStackBuffer == 0x0) fStackBuffer = new TList(); |
220 | //Here is initialization level | |
221 | if (fSignalShapeCreated == kFALSE) | |
222 | { | |
223 | TH3D *hs = 0x0, *hb = 0x0; | |
224 | TFile* file; | |
225 | ||
226 | file = TFile::Open("QTSignal.root"); | |
227 | if (file) | |
228 | { | |
229 | hs = (TH3D*)file->Get("fQSignal1"); | |
230 | if (hs) hs->SetDirectory(0x0); | |
231 | } | |
232 | delete file; | |
233 | ||
234 | file = TFile::Open("QTBackground.root"); | |
235 | if (file) | |
236 | { | |
237 | hb = (TH3D*)file->Get("fQBackground1"); | |
238 | if (hb) hb->SetDirectory(0x0); | |
239 | } | |
240 | delete file; | |
241 | ||
242 | if (hs && hb) | |
243 | { | |
244 | Info("Generate","**********************************"); | |
245 | Info("Generate","Found starting histograms in files"); | |
246 | Info("Generate","**********************************"); | |
247 | delete fQSignal; | |
248 | delete fQBackground; | |
249 | fQSignal = hs; | |
250 | fQBackground = hb; | |
251 | } | |
252 | else | |
253 | { | |
254 | TH3D *cs = 0x0, *cb = 0x0; | |
255 | file = TFile::Open("QTCoarseBackground.root"); | |
256 | if (file) | |
257 | { | |
258 | cb = (TH3D*)file->Get("fQCoarseBackground"); | |
259 | if (cb) cb->SetDirectory(0x0); | |
260 | } | |
261 | delete file; | |
262 | ||
263 | file = TFile::Open("QTCoarseSignal.root"); | |
264 | if (file) | |
265 | { | |
266 | cs = (TH3D*)file->Get("fQCoarseSignal"); | |
267 | if (cs) cs->SetDirectory(0x0); | |
268 | } | |
269 | delete file; | |
270 | ||
271 | if (cs && cb) | |
272 | { | |
273 | ||
274 | Info("Generate","Got Coarse signal and bkg from files"); | |
275 | delete fQCoarseBackground; | |
276 | delete fQCoarseSignal; | |
277 | fQCoarseSignal = cs; | |
278 | fQCoarseBackground = cb; | |
279 | } | |
280 | else | |
281 | { | |
282 | if (cb) | |
283 | { | |
284 | Info("Generate","Got Coarse bkg from file"); | |
285 | delete fQCoarseBackground; | |
286 | fQCoarseBackground = cb; | |
287 | } | |
288 | else | |
5fdc214b | 289 | { |
290 | fQCoarseBackground = new TH3D("fQCoarseBackground","",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); | |
291 | fQCoarseBackground->Sumw2(); | |
292 | ||
695dc56f | 293 | FillCoarse(); //create coarse background - just to know the spectrum |
294 | } | |
5fdc214b | 295 | |
296 | fQCoarseSignal = new TH3D("fQCoarseSignal","fQCoarseSignal",fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange, fQNBins,-fQRange,fQRange); | |
297 | fQCoarseSignal->Sumw2(); | |
695dc56f | 298 | FillCoarseSignal();//create first coarse signal by brutal multplication coarse background and required function shape |
299 | } | |
300 | ||
301 | StartSignal(); //Initilizes the stack that is used for generation | |
302 | } | |
303 | fSignalShapeCreated = kTRUE; | |
304 | } | |
305 | ||
306 | AliStack* stack = RotateStack(); | |
307 | ||
308 | AliStack* genstack = fGenerator->GetStack(); | |
309 | if (genstack == 0x0) | |
310 | { | |
311 | genstack = new AliStack(fNpart); | |
312 | fGenerator->SetStack(genstack); | |
313 | } | |
314 | else | |
315 | { | |
316 | genstack->Reset(); | |
317 | } | |
318 | ||
319 | fGenerator->Generate(); | |
320 | Int_t j = 0, ntr = 0; | |
321 | if ( genstack->GetNtrack() < fNpart/2) | |
322 | { | |
323 | Warning("Generate","************************************************************"); | |
324 | Warning("Generate","Generator generated (%d) less particles then expected (%d).", | |
325 | stack->GetNtrack(),fNpart/2); | |
326 | Warning("Generate","************************************************************"); | |
327 | } | |
328 | ||
329 | TH3D* work = new TH3D("work","work",fQNBins,-fQRange,fQRange,fQNBins,-fQRange,fQRange,fQNBins,-fQRange,fQRange); | |
5fdc214b | 330 | work->SetDirectory(0x0); |
331 | work->Sumw2(); | |
695dc56f | 332 | |
333 | Double_t*** chiarray = new Double_t** [fQNBins+1]; | |
334 | Double_t*** sigarray = new Double_t** [fQNBins+1]; | |
335 | ||
336 | for (Int_t i = 1; i<=fQNBins; i++) | |
337 | { | |
338 | chiarray[i] = new Double_t* [fQNBins+1]; | |
339 | sigarray[i] = new Double_t* [fQNBins+1]; | |
340 | ||
341 | for (Int_t k = 1; k<=fQNBins; k++) | |
342 | { | |
343 | chiarray[i][k] = new Double_t [fQNBins+1]; | |
344 | sigarray[i][k] = new Double_t [fQNBins+1]; | |
345 | } | |
346 | } | |
347 | ||
348 | ||
349 | Double_t scale = Scale(fQSignal,fQBackground); | |
350 | work->Divide(fQSignal,fQBackground,scale); | |
351 | ||
352 | Double_t binwdh = work->GetBinWidth(1)/2.; | |
353 | ||
354 | for (Int_t k = 1; k<=fQNBins; k++) | |
355 | { | |
356 | Double_t z = work->GetZaxis()->GetBinCenter(k); | |
357 | for (Int_t j = 1; j<=fQNBins; j++) | |
358 | { | |
359 | Double_t y = work->GetYaxis()->GetBinCenter(j); | |
360 | for (Int_t i = 1; i<=fQNBins; i++) | |
361 | { | |
362 | sigarray[i][j][k] = fQSignal->GetBinContent(i,j,k);//store current value of signal histogram | |
363 | Double_t x = work->GetXaxis()->GetBinCenter(i);//get center value of a bin (qinv) | |
364 | Double_t v = GetQOutQSideQLongCorrTheorValue(x,y,z);//get expected value of CF in that qinv | |
365 | Double_t diff = v - work->GetBinContent(i,j,k);//store difference betweeon current value, and desired value | |
366 | chiarray[i][j][k] = diff; // no-x x is a weight to get good distribution | |
367 | } | |
368 | } | |
369 | } | |
5fdc214b | 370 | |
371 | char msg[1000]; | |
372 | logfile<<endl; | |
373 | sprintf(msg,"\n"); | |
695dc56f | 374 | Int_t middlebin = fQNBins/2; |
5fdc214b | 375 | |
376 | for (Int_t k = middlebin-5; k < middlebin+5; k++) | |
377 | { | |
378 | Double_t tx = work->GetXaxis()->GetBinCenter(30); | |
379 | Double_t ty = work->GetYaxis()->GetBinCenter(30); | |
380 | Double_t tz = work->GetZaxis()->GetBinCenter(k); | |
381 | sprintf(msg,"% 6.5f ",GetQOutQSideQLongCorrTheorValue(tx,ty,tz)); | |
382 | logfile<<msg; | |
383 | } | |
384 | logfile<<endl; | |
385 | ||
695dc56f | 386 | for (Int_t k = middlebin-5; k < middlebin+5; k++) |
387 | { | |
5fdc214b | 388 | sprintf(msg,"% 6.5f ",work->GetBinContent(30,30,k)); |
389 | logfile<<msg; | |
695dc56f | 390 | } |
5fdc214b | 391 | logfile<<endl; |
695dc56f | 392 | |
393 | for (Int_t k = middlebin-5; k < middlebin+5; k++) | |
394 | { | |
5fdc214b | 395 | sprintf(msg,"% 6.5f ",chiarray[30][30][k]); |
396 | logfile<<msg; | |
695dc56f | 397 | } |
5fdc214b | 398 | logfile<<endl; |
695dc56f | 399 | |
400 | TParticle particle(fPID,0,-1,-1,-1,-1,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0); | |
401 | TParticle* second = &particle; | |
402 | ||
403 | Bool_t shortloop = kTRUE; | |
404 | Int_t sc = 0;//security check against infinite loop | |
405 | ||
406 | while ( (ntr+1) < fNpart) | |
407 | { | |
408 | Int_t xmax = 1; | |
409 | Int_t ymax = 1; | |
410 | Int_t zmax = 1; | |
411 | Double_t qout; | |
412 | Double_t qside; | |
413 | Double_t qlong; | |
414 | ||
415 | ||
416 | Int_t loopmin; | |
417 | Int_t loopmax; | |
418 | ||
419 | if (shortloop) | |
420 | { | |
421 | shortloop = kFALSE; | |
422 | loopmax = fQNBins; | |
423 | loopmin = 1; | |
424 | } | |
425 | else | |
426 | { | |
427 | shortloop = kTRUE; | |
428 | loopmax = fQNBins/2+fQNBins/4; | |
429 | loopmin = fQNBins/2-fQNBins/4; | |
430 | } | |
431 | ||
432 | ||
433 | for (Int_t k = loopmin; k <=loopmax; k++ ) | |
434 | { | |
435 | qlong = work->GetZaxis()->GetBinCenter(k); | |
436 | for (Int_t j = loopmin; j<=loopmax; j++) | |
437 | { | |
438 | qside = work->GetYaxis()->GetBinCenter(j); | |
439 | for (Int_t i = loopmin; i<=loopmax; i++) | |
440 | { | |
441 | qout = work->GetXaxis()->GetBinCenter(i); | |
442 | if (chiarray[xmax][ymax][zmax] < chiarray[i][j][k]) | |
443 | { | |
444 | xmax = i; | |
445 | ymax = j; | |
446 | zmax = k; | |
447 | } | |
448 | ||
449 | // Double_t qdist = TMath::Sqrt(qout*qout + qside*qside + qlong*qlong); | |
450 | ||
451 | // Double_t fact = chiarray[i][j][k];//chiarray is chi2 | |
452 | // if (fact > work->GetBinError(i,j,k))//if differece between what we want and | |
453 | // { //what we have is bigger than stat. error | |
454 | // xmax = i; //we force to fill that bin | |
455 | // ymax = j; | |
456 | // zmax = k; | |
457 | // break; | |
458 | // } | |
459 | } | |
460 | } | |
461 | } | |
5fdc214b | 462 | Double_t qlongc = work->GetZaxis()->GetBinCenter(zmax); |
463 | Double_t qsidec = work->GetYaxis()->GetBinCenter(ymax); | |
464 | Double_t qoutc = work->GetXaxis()->GetBinCenter(xmax); | |
695dc56f | 465 | |
5fdc214b | 466 | |
467 | sprintf(msg,"Generate Fill bin chi2(%d,%d,%d)=%f",xmax,ymax,zmax,chiarray[xmax][ymax][zmax]); | |
468 | logfile<<msg; | |
695dc56f | 469 | |
5fdc214b | 470 | qout = gRandom->Uniform(qoutc -binwdh, qoutc +binwdh); |
471 | qside = gRandom->Uniform(qsidec-binwdh, qsidec+binwdh); | |
472 | qlong = gRandom->Uniform(qlongc-binwdh, qlongc+binwdh); | |
695dc56f | 473 | |
474 | TParticle* first = 0; | |
475 | while (j < genstack->GetNtrack()) | |
476 | { | |
477 | TParticle* tmpp = genstack->Particle(j++); | |
478 | if (tmpp->GetPdgCode() == fPID) | |
479 | { | |
480 | if (CheckParticle(tmpp,0x0,stack) == kFALSE) | |
481 | { | |
482 | first = tmpp; | |
483 | break; | |
484 | } | |
485 | } | |
486 | } | |
487 | ||
488 | if (first == 0x0) | |
489 | { | |
490 | if ( fDebug > 2 ) Info("StartSignal","No more particles of that type"); | |
491 | break; | |
492 | } | |
493 | ||
494 | //Here put the check if this particle do not fall into signal region with other partticle | |
495 | ||
496 | Int_t retval = GetThreeD(first,second,qout,qside,qlong); | |
497 | if (retval) | |
498 | { | |
499 | //Info("StartSignal","Can not find momenta for this OSL and particle"); | |
500 | continue; | |
501 | } | |
502 | //in case this particle is falling into signal area with another | |
503 | //particle we take a another pair | |
504 | //it can intruduce artificial correlations | |
505 | Bool_t checkresult = CheckParticle(second,first,stack); | |
506 | if ( checkresult && (sc < 10) ) | |
507 | { | |
508 | sc++; | |
509 | continue; | |
510 | } | |
511 | sc = 0; | |
512 | ||
513 | //Put on output stack | |
514 | SetTrack(first,ntr); | |
515 | SetTrack(second,ntr); | |
516 | ||
517 | //Put on internal stack | |
518 | Int_t etmp; | |
519 | SetTrack(first,etmp,stack); | |
520 | SetTrack(second,etmp,stack); | |
521 | ||
5fdc214b | 522 | Double_t y = GetQOutQSideQLongCorrTheorValue(qoutc,qsidec,qlongc); |
695dc56f | 523 | |
524 | sigarray[xmax][ymax][zmax] ++; | |
525 | chiarray[xmax][ymax][zmax] = scale*sigarray[xmax][ymax][zmax]/fQBackground->GetBinContent(xmax,ymax,zmax); | |
526 | chiarray[xmax][ymax][zmax] = (y - chiarray[xmax][ymax][zmax]); | |
527 | ||
528 | } | |
529 | ||
530 | Mix(fStackBuffer,fQBackground,fQSecondSignal); //upgrate background | |
531 | Mix(stack,fQSignal,fQSecondBackground); //upgrate signal | |
5fdc214b | 532 | |
533 | delete work; | |
534 | ||
695dc56f | 535 | for (Int_t i = 1; i<=fQNBins; i++) |
536 | { | |
537 | for (Int_t k = 1; k<=fQNBins; k++) | |
538 | { | |
539 | delete [] chiarray[i][k]; | |
540 | delete [] sigarray[i][k]; | |
541 | } | |
542 | delete [] chiarray[i]; | |
543 | delete [] sigarray[i]; | |
544 | } | |
545 | delete [] chiarray; | |
546 | delete [] sigarray; | |
547 | } | |
548 | /***********************************************************/ | |
549 | ||
550 | void AliGenHBTosl::GetOneD(TParticle* first, TParticle* second,Double_t qinv) | |
551 | { | |
552 | //deprecated method that caclulates momenta of the second particle | |
553 | // out of qinv and the first particle | |
554 | //first particle is rotated that only X is non-zero | |
555 | ||
556 | ||
557 | Double_t m = first->GetMass(); | |
558 | Double_t msqrd = m*m; | |
559 | Double_t fourmassSquered = 4.*msqrd; | |
560 | ||
561 | //Condition that R must fullfill to be possible to have qinv less smaller then randomized | |
562 | // Double_t rRange = qinv*TMath::Sqrt(qinv*qinv + fourmassSquered)/fourmassSquered; | |
563 | // Double_t r = gRandom->Uniform(rRange); | |
564 | ||
565 | Double_t r = gRandom->Uniform(qinv); | |
566 | Double_t phi = gRandom->Uniform(TMath::TwoPi()); | |
567 | ||
568 | Double_t firstPx = first->P();//first particle is rotated that only X is non-zero thus P==Px | |
569 | Double_t px = 2.*msqrd*firstPx + firstPx*qinv*qinv; | |
570 | Double_t temp = qinv*qinv*qinv*qinv + fourmassSquered * (qinv*qinv - r*r ); | |
571 | if (temp < 0.0) | |
572 | { | |
573 | Error("GetOneD","temp is less then 0: %f",temp); | |
574 | return; | |
575 | } | |
576 | temp = temp*(msqrd+firstPx*firstPx); | |
577 | ||
578 | px = (px - TMath::Sqrt(temp))/(2.*msqrd); | |
579 | ||
580 | Double_t py = r*TMath::Sin(phi); | |
581 | Double_t pz = r*TMath::Cos(phi); | |
582 | ||
583 | TVector3 firstpvector(first->Px(),first->Py(),first->Pz()); | |
584 | TVector3 vector(px,py,pz); | |
585 | Rotate(firstpvector,vector); | |
586 | ||
587 | Double_t e = TMath::Sqrt(msqrd + vector.X()*vector.X() + vector.Y()*vector.Y() + vector.Z()*vector.Z()); | |
588 | second->SetMomentum(vector.X(),vector.Y(),vector.Z(),e); | |
589 | // TParticle* f = new TParticle(first->GetPdgCode(),0,-1,-1,-1,-1, firstPx,0,0,e=TMath::Sqrt(msqrd+firstPx*firstPx),0.0,0.0,0.0,0.0); | |
590 | // TParticle(pdg, is, parent, -1, kFirstDaughter, kLastDaughter, | |
591 | // px, py, pz, e, vx, vy, vz, tof); | |
592 | ||
593 | if (GetDebug()) Info("GetOneD","Randomized qinv = %f, obtained = %f",qinv,GetQInv(first,second)); | |
594 | ||
595 | } | |
596 | /***********************************************************/ | |
597 | ||
598 | Int_t AliGenHBTosl::GetThreeD(TParticle* first,TParticle* second, Double_t qout, Double_t qside, Double_t qlong) | |
599 | { | |
600 | //deprecated method that caclulates momenta of the second particle | |
601 | //out of qout qside and qlong and the first particle | |
602 | Double_t m = first->GetMass(); | |
603 | Double_t m2 = m*m; | |
604 | ||
605 | Double_t px = first->P();//first particle is rotated that only X is non-zero thus P==Px | |
606 | Double_t px2 = px*px; | |
607 | ||
608 | ||
609 | Double_t qout2 = qout*qout; | |
610 | Double_t qside2 = qside*qside; | |
611 | Double_t qlong2 = qlong*qlong; | |
612 | ||
613 | ||
614 | Double_t util1 = 4.*px2 - qside2;//4*P1x^2 - Y^2 | |
615 | if (util1 < 0) | |
616 | { | |
617 | Info("GetThreeD","4.*px2* - qside2 is negative px: %f, qside: %f",px,qside); | |
618 | return 1; | |
619 | } | |
620 | Double_t util2 = TMath::Sqrt(px2*qout2*util1); | |
621 | ||
622 | ||
623 | Double_t p2x,p2y,p2z; | |
624 | ||
625 | // if ( (qside >= 0) && (qout >= 0) && (qlong >= 0)) | |
626 | if (qout >= 0) | |
627 | { | |
628 | //p2x | |
629 | Double_t tmp = px*(2.*px2 - qside2); | |
630 | tmp -= util2; | |
631 | p2x = tmp/(2.*px2); | |
632 | ||
633 | //p2y | |
634 | tmp = qout - TMath::Sqrt(util1); | |
635 | p2y = - (tmp*qside)/(2.*px); | |
636 | ||
637 | //p2z | |
638 | tmp = 4.*m2 + 2.*qout2+qlong2; | |
639 | tmp *= px; | |
640 | tmp -= 2.*util2;//!!! | |
641 | tmp += 4.*px*px2; | |
642 | tmp *= qlong2; | |
643 | ||
644 | Double_t m2px2 = m2+px2; | |
645 | Double_t tmp2 = m2px2*tmp; | |
646 | ||
647 | tmp = 4.*(m2px2+qout2) + qlong2; | |
648 | tmp *= px; | |
649 | tmp -= 4.*util2; | |
650 | tmp *= 4.*(m2px2) + qlong2; | |
651 | tmp *= qlong2*qlong2; | |
652 | tmp *= m2px2*m2px2; | |
653 | tmp *= px; | |
654 | if (tmp < 0) | |
655 | { | |
656 | Error("","Argument of sqrt is negative"); | |
657 | return 1; | |
658 | } | |
659 | ||
660 | tmp2 += TMath::Sqrt(tmp); | |
661 | ||
662 | tmp = 8.0*px*m2px2*m2px2; | |
663 | p2z = -TMath::Sqrt(tmp2/tmp); | |
664 | if (qlong < 0) p2z = -p2z; | |
665 | } | |
666 | else | |
667 | { | |
668 | //p2x | |
669 | Double_t tmp = px*(2.*px2 - qside2); | |
670 | tmp += util2; | |
671 | p2x = tmp/(2.*px2); | |
672 | ||
673 | //p2y | |
674 | tmp = qout - TMath::Sqrt(util1); | |
675 | p2y = - (tmp*qside)/(2.*px); | |
676 | ||
677 | //p2z | |
678 | tmp = 4.*m2 + 2.*qout2+qlong2; | |
679 | tmp *= px; | |
680 | tmp += 2.*util2;//!!! | |
681 | tmp += 4.*px*px2; | |
682 | tmp *= qlong2; | |
683 | ||
684 | Double_t m2px2 = m2+px2; | |
685 | Double_t tmp2 = m2px2*tmp; | |
686 | ||
687 | tmp = 4.*(m2px2+qout2) + qlong2; | |
688 | tmp *= px; | |
689 | tmp += 4.*util2; | |
690 | tmp *= 4.*(m2px2) + qlong2; | |
691 | tmp *= qlong2*qlong2; | |
692 | tmp *= m2px2*m2px2; | |
693 | tmp *= px; | |
694 | if (tmp < 0) | |
695 | { | |
696 | Error("","Argument of sqrt is negative"); | |
697 | return 1; | |
698 | } | |
699 | ||
700 | tmp2 += TMath::Sqrt(tmp); | |
701 | ||
702 | tmp = 8.0*px*m2px2*m2px2; | |
703 | p2z = -TMath::Sqrt(tmp2/tmp); | |
704 | if (qlong < 0) p2z = -p2z; | |
705 | } | |
706 | ||
707 | // if ( (qside >= 0) && (qout >= 0) && (qlong >= 0)) p2z = -p2z; | |
708 | ||
709 | TVector3 firstpvector(first->Px(),first->Py(),first->Pz()); | |
710 | TVector3 vector(p2x,p2y,p2z); | |
711 | Rotate(firstpvector,vector); | |
712 | ||
713 | Double_t e = TMath::Sqrt(m2 + vector.X()*vector.X() + vector.Y()*vector.Y() + vector.Z()*vector.Z()); | |
714 | second->SetMomentum(vector.X(),vector.Y(),vector.Z(),e); | |
715 | ||
716 | //////////// | |
717 | if ( GetDebug() > 3 ) | |
718 | { | |
719 | e=TMath::Sqrt(m2+px*px); | |
720 | TParticle* f = new TParticle(first->GetPdgCode(),0,-1,-1,-1,-1, px , 0.0, 0.0, e,0.0,0.0,0.0,0.0); | |
721 | ||
722 | e = TMath::Sqrt(m2 + p2x*p2x + p2y*p2y + p2z*p2z); | |
723 | TParticle* s = new TParticle(first->GetPdgCode(),0,-1,-1,-1,-1, p2x, p2y, p2z, e, 0.0, 0.0, 0.0, 0.0); | |
724 | ||
725 | Double_t qo, qs, ql; | |
726 | GetQOutQSideQLong(f,s,qo, qs, ql); | |
727 | ||
728 | Info("GetThreeD","TEST"); | |
729 | f->Print(); | |
730 | s->Print(); | |
731 | Info("GetThreeD","Required %f %f %f",qout,qside,qlong); | |
732 | Info("GetThreeD","Got %f %f %f",qo,qs,ql); | |
733 | if ( qout == qo) | |
734 | if (qside == qs) | |
735 | if (qlong == ql) | |
736 | Info("GetThreeD","!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"); | |
737 | } | |
738 | ///////////// | |
739 | return 0; | |
740 | } | |
741 | /***********************************************************/ | |
742 | ||
743 | void AliGenHBTosl::StartSignal() | |
744 | { | |
745 | //Starts the signal histograms | |
5fdc214b | 746 | ofstream& logfile = *fLogFile; |
747 | logfile<<"\n\n\n\n"; | |
748 | logfile<<"************************************************"<<endl; | |
749 | logfile<<"************************************************"<<endl; | |
750 | logfile<<" StartSignal "<<endl; | |
751 | logfile<<"************************************************"<<endl; | |
752 | logfile<<"************************************************"<<endl; | |
753 | ||
695dc56f | 754 | AliStack* stack; |
755 | ||
756 | fSwapped = kFALSE; | |
757 | ||
758 | TParticle particle(fPID,0,-1,-1,-1,-1,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0); | |
759 | TParticle* second = &particle; | |
760 | ||
761 | TIter next(fStackBuffer); | |
762 | while(( stack=(AliStack*)next() )) | |
763 | { | |
764 | stack->Reset(); | |
765 | } | |
766 | ||
767 | AliStack* genstack = fGenerator->GetStack(); | |
768 | if (genstack == 0x0) | |
769 | { | |
770 | genstack = new AliStack(fNpart); | |
771 | fGenerator->SetStack(genstack); | |
772 | } | |
773 | else | |
774 | { | |
775 | genstack->Reset(); | |
776 | } | |
777 | ||
5fdc214b | 778 | StartSignalPass1(); |
779 | //We alread have detailed histograms and we do not need Coarse anymore | |
780 | delete fQCoarseSignal; | |
781 | delete fQCoarseBackground; | |
782 | fQCoarseSignal = 0x0; | |
783 | fQCoarseBackground = 0x0; | |
784 | ||
785 | ||
786 | const Double_t kNDF = fQNBins*fQNBins*fQNBins; | |
695dc56f | 787 | |
788 | TH3D* work = new TH3D("work","work",fQNBins,-fQRange,fQRange,fQNBins,-fQRange,fQRange,fQNBins,-fQRange,fQRange); | |
789 | work->Sumw2(); | |
790 | work->SetDirectory(0x0); | |
791 | ||
792 | ||
793 | Double_t binwdh = work->GetBinWidth(1)/2.; | |
794 | ||
795 | Double_t*** chiarray = new Double_t** [fQNBins+1]; | |
796 | Double_t*** sigarray = new Double_t** [fQNBins+1]; | |
797 | ||
798 | for (Int_t i = 1; i<=fQNBins; i++) | |
799 | { | |
800 | chiarray[i] = new Double_t* [fQNBins+1]; | |
801 | sigarray[i] = new Double_t* [fQNBins+1]; | |
802 | ||
803 | for (Int_t k = 1; k<=fQNBins; k++) | |
804 | { | |
805 | chiarray[i][k] = new Double_t [fQNBins+1]; | |
806 | sigarray[i][k] = new Double_t [fQNBins+1]; | |
807 | } | |
808 | } | |
809 | ||
810 | ||
811 | Float_t chisqrchange = fMaxChiSquereChange + 1.; | |
812 | Float_t chisqrPerDF = fMaxChiSquerePerNDF; | |
813 | Float_t chisqrold = 0.0; | |
814 | ||
815 | Int_t counter = 1; | |
816 | Int_t niterations = 1; | |
817 | Int_t rotaxisorder = 1;//defines order of looping over 3D histo (X,Y,Z or Y,Z,X or Z,X,Y) | |
818 | ||
819 | Bool_t flag = kTRUE; | |
820 | Bool_t shortloop = kTRUE; | |
821 | TCanvas* c1 = new TCanvas(); | |
822 | ||
695dc56f | 823 | |
824 | printf("\n"); | |
825 | Info("StartSignal","\n\n\n\nSecond Pass\n\n\n\n"); | |
826 | ||
827 | while ( ( (chisqrPerDF > fMaxChiSquereChange) || flag) && (niterations++ < fMaxIterations) ) | |
828 | { | |
829 | ||
5fdc214b | 830 | logfile<<"StartSignal\n"; |
831 | logfile<<" Row 1 Theory, 2 current value, 3 Chi2 \n"; | |
695dc56f | 832 | |
833 | Double_t chisqrnew = 0.0; | |
834 | flag = kFALSE; | |
835 | ||
836 | Double_t scale = Scale(fQSignal,fQBackground); | |
837 | work->Divide(fQSignal,fQBackground,scale); | |
838 | ||
839 | if ( (counter%100) == 0) | |
840 | { | |
841 | c1->cd(); | |
842 | char buff[50]; | |
843 | sprintf(buff,"QTWorkPass2.%3d.root",counter); | |
844 | TFile* file = TFile::Open(buff,"update"); | |
845 | work->Write(); | |
846 | work->SetDirectory(0x0); | |
847 | file->Close(); | |
848 | delete file; | |
849 | ||
850 | sprintf(buff,"QTBackgroundPass2.%3d.root",counter); | |
851 | file = TFile::Open(buff,"update"); | |
852 | fQBackground->Write(); | |
853 | fQBackground->SetDirectory(0x0); | |
854 | file->Close(); | |
855 | delete file; | |
856 | ||
857 | sprintf(buff,"QTSignalPass2.%3d.root",counter); | |
858 | file = TFile::Open(buff,"update"); | |
859 | fQSignal->Write(); | |
860 | fQSignal->SetDirectory(0x0); | |
861 | file->Close(); | |
862 | delete file; | |
863 | } | |
864 | ||
865 | counter++; | |
866 | Int_t novertresh = 0; | |
867 | for (Int_t k = 1; k<=fQNBins; k++) | |
868 | { | |
869 | Double_t z = work->GetZaxis()->GetBinCenter(k); | |
870 | for (Int_t j = 1; j<=fQNBins; j++) | |
871 | { | |
872 | Double_t y = work->GetYaxis()->GetBinCenter(j); | |
873 | for (Int_t i = 1; i<=fQNBins; i++) | |
874 | { | |
875 | Double_t x = work->GetXaxis()->GetBinCenter(i);//get center value of a bin (qout) | |
876 | sigarray[i][j][k] = fQSignal->GetBinContent(i,j,k);//store current value of signal histogram | |
877 | Double_t v = GetQOutQSideQLongCorrTheorValue(x,y,z);//get expected value of CF in that qinv | |
878 | Double_t diff = v - work->GetBinContent(i,j,k);//store difference betweeon current value, and desired value | |
879 | chiarray[i][j][k] = diff; // no-x x is a weight to get good distribution | |
880 | Double_t be = work->GetBinError(i,j,k); | |
881 | chisqrnew += diff*diff/(be*be);//add up chisq | |
882 | ||
883 | //even if algorithm is stable (chi sqr change less then threshold) | |
884 | //and any bin differs more then 5% from expected value we continue | |
885 | Double_t fact = diff; | |
886 | if (TMath::Abs(fact) > 0.1) | |
887 | { | |
888 | flag = kTRUE; | |
889 | novertresh++; | |
890 | } | |
891 | } | |
892 | } | |
893 | } | |
894 | ||
895 | ||
5fdc214b | 896 | char msg[1000]; |
695dc56f | 897 | |
5fdc214b | 898 | printf("\n"); |
899 | ||
900 | for (Int_t k = 25; k < 36; k++) | |
695dc56f | 901 | { |
5fdc214b | 902 | Double_t tx = work->GetXaxis()->GetBinCenter(30); |
903 | Double_t ty = work->GetYaxis()->GetBinCenter(30); | |
695dc56f | 904 | Double_t tz = work->GetZaxis()->GetBinCenter(k); |
5fdc214b | 905 | sprintf(msg,"% 6.5f ",GetQOutQSideQLongCorrTheorValue(tx,ty,tz)); |
906 | logfile<<msg; | |
695dc56f | 907 | } |
5fdc214b | 908 | logfile<<endl; |
695dc56f | 909 | |
5fdc214b | 910 | for (Int_t k = 25; k < 36; k++) |
695dc56f | 911 | { |
5fdc214b | 912 | sprintf(msg,"%6.5f ",work->GetBinContent(30,30,k)); |
913 | logfile<<msg; | |
695dc56f | 914 | } |
5fdc214b | 915 | logfile<<endl; |
695dc56f | 916 | |
5fdc214b | 917 | for (Int_t k = 25; k < 36; k++) |
695dc56f | 918 | { |
5fdc214b | 919 | sprintf(msg,"% 6.5f ",chiarray[30][30][k]); |
920 | logfile<<msg; | |
695dc56f | 921 | } |
5fdc214b | 922 | logfile<<endl; |
695dc56f | 923 | |
924 | chisqrchange = TMath::Abs(chisqrnew - chisqrold)/chisqrnew; | |
925 | chisqrold = chisqrnew; | |
926 | ||
5fdc214b | 927 | chisqrPerDF = chisqrnew/kNDF; |
695dc56f | 928 | |
929 | Info("StartSignal","Iteration %d Chi-sq change %f%%",niterations,chisqrchange*100.0); | |
5fdc214b | 930 | Info("StartSignal","ChiSq = %f, NDF = %f, ChiSq/NDF = %f",chisqrnew, kNDF, chisqrPerDF ); |
695dc56f | 931 | Info("StartSignal","novertresh = %d",novertresh); |
932 | ||
933 | ||
934 | stack = RotateStack(); | |
935 | genstack->Reset(); | |
936 | fGenerator->Generate(); | |
937 | Int_t ninputparticle = 0, ntr = 0; | |
938 | if ( genstack->GetNtrack() < fNpart/2) | |
939 | { | |
940 | Warning("StartSignal","**********************************"); | |
941 | Warning("StartSignal","Generator generated (%d) less particles then expected (%d).", | |
942 | genstack->GetNtrack(),fNpart/2); | |
943 | Warning("StartSignal","**********************************"); | |
944 | } | |
945 | ||
946 | Int_t sc = 0; //security check against infinite loop | |
947 | while ( (ntr+1) < fNpart)//ntr is number of track generated up to now | |
948 | { | |
949 | Int_t xmax = 1; | |
950 | Int_t ymax = 1; | |
951 | Int_t zmax = 1; | |
952 | Double_t qout; | |
953 | Double_t qside; | |
954 | Double_t qlong; | |
955 | ||
956 | Int_t i,j,k; | |
957 | ||
958 | Int_t* cx = 0x0; | |
959 | Int_t* cy = 0x0; | |
960 | Int_t* cz = 0x0; | |
961 | ||
962 | switch (rotaxisorder) | |
963 | { | |
964 | case 1: | |
965 | cx = &i; | |
966 | cy = &j; | |
967 | cz = &k; | |
968 | break; | |
969 | case 2: | |
970 | cx = &j; | |
971 | cy = &k; | |
972 | cz = &i; | |
973 | break; | |
974 | case 3: | |
975 | cx = &k; | |
976 | cy = &i; | |
977 | cz = &j; | |
978 | break; | |
979 | } | |
980 | rotaxisorder++; | |
981 | if (rotaxisorder > 3) rotaxisorder = 1; | |
982 | Int_t nrange; | |
983 | ||
984 | if (shortloop) | |
985 | { | |
986 | shortloop = kFALSE; | |
987 | nrange = fQNBins; | |
988 | } | |
989 | else | |
990 | { | |
991 | shortloop = kTRUE; | |
992 | nrange = fQNBins/4; | |
993 | } | |
994 | ||
995 | // Bool_t force = kFALSE; | |
996 | for ( k = 1; k <=nrange;k++ ) | |
997 | { | |
998 | for ( j = 1; j<=nrange; j++) | |
999 | { | |
1000 | for ( i = 1; i<=nrange; i++) | |
1001 | { | |
1002 | if ( (chiarray[*cx][*cy][*cz]) > (chiarray[xmax][ymax][zmax]) ) | |
1003 | { | |
1004 | xmax = *cx; | |
1005 | ymax = *cy; | |
1006 | zmax = *cz; | |
1007 | } | |
1008 | ||
1009 | // Double_t fact = chiarray[*cx][*cy][*cz];//chiarray is chi2*qinv | |
1010 | // if (fact > work->GetBinError(*cx,*cy,*cz))//if differece between what we want and | |
1011 | // { //what we have is bigger than stat. error | |
1012 | // //we force to fill that bin | |
1013 | // qout = work->GetXaxis()->GetBinCenter(*cx); | |
1014 | // qside = work->GetYaxis()->GetBinCenter(*cy); | |
1015 | // qlong = work->GetZaxis()->GetBinCenter(*cz); | |
1016 | ||
1017 | // Info("StartSignal"," bin: (%d,%d,%d) loop status (%d,%d,%d) \nUsing Force: chiarray: %f \nq(o,s,l): (%f,%f,%f) signal: %d background: %d binerror: %f", | |
1018 | // *cx,*cy,*cz,i,j,k,fact,qout,qside,qlong, | |
1019 | // (Int_t)sigarray[*cx][*cy][*cz],(Int_t)fQBackground->GetBinContent(*cx,*cy,*cz),work->GetBinError(*cx,*cy,*cz)); | |
1020 | // force = kTRUE; | |
1021 | // break; | |
1022 | // } | |
1023 | ||
1024 | } | |
1025 | // if (force) break; | |
1026 | } | |
1027 | // if (force) break; | |
1028 | } | |
1029 | ||
1030 | ||
1031 | qout = work->GetXaxis()->GetBinCenter(xmax); | |
1032 | qside = work->GetYaxis()->GetBinCenter(ymax); | |
1033 | qlong = work->GetZaxis()->GetBinCenter(zmax); | |
1034 | ||
1035 | // Info("StartSignal"," bin: (%d,%d,%d) chiarray: %f \nq(o,s,l): (%f,%f,%f) signal: %d background: %d binerror: %f", | |
1036 | // xmax,ymax,zmax,chiarray[xmax][ymax][zmax],qout,qside,qlong, | |
1037 | // (Int_t)sigarray[xmax][ymax][zmax], | |
1038 | // (Int_t)fQBackground->GetBinContent(xmax,ymax,zmax), | |
1039 | // work->GetBinError(xmax,ymax,zmax)); | |
1040 | ||
1041 | qout = gRandom->Uniform(qout-binwdh,qout+binwdh); | |
1042 | qside = gRandom->Uniform(qside-binwdh,qside+binwdh); | |
1043 | qlong = gRandom->Uniform(qlong-binwdh,qlong+binwdh); | |
1044 | ||
1045 | TParticle* first = 0; | |
1046 | while (ninputparticle < genstack->GetNtrack()) | |
1047 | { | |
1048 | TParticle* tmpp = genstack->Particle(ninputparticle++); | |
1049 | if (tmpp->GetPdgCode() == fPID) | |
1050 | { | |
1051 | if (CheckParticle(tmpp,0x0,stack) == kFALSE) | |
1052 | { | |
1053 | first = tmpp; | |
1054 | break; | |
1055 | } | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | if (first == 0x0) | |
1060 | { | |
1061 | if ( fDebug > 2 ) Info("StartSignal","No more particles of that type"); | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | Int_t retval = GetThreeD(first,second,qout,qside,qlong); | |
1066 | if (retval) | |
1067 | { | |
1068 | Info("StartSignal","Can not find momenta for this OSL and particle OSL = %f %f %f",qout,qside,qlong); | |
1069 | first->Print(); | |
1070 | second->Print(); | |
1071 | ||
1072 | continue; | |
1073 | } | |
1074 | //in case this particle is falling into signal area with another | |
1075 | //particle we take a another pair | |
1076 | //it can intruduce artificial correlations | |
1077 | Bool_t checkresult = CheckParticle(second,first,stack); | |
1078 | if ( checkresult && (sc < 10) ) | |
1079 | { | |
1080 | sc++; | |
1081 | continue; | |
1082 | } | |
1083 | sc = 0; | |
1084 | ||
1085 | //Put on output stack | |
1086 | SetTrack(first,ntr,stack); | |
1087 | SetTrack(second,ntr,stack); | |
1088 | ||
1089 | Double_t y = GetQOutQSideQLongCorrTheorValue(qout,qside,qlong); | |
1090 | ||
1091 | sigarray[xmax][ymax][zmax] ++; | |
1092 | chiarray[xmax][ymax][zmax] = scale*sigarray[xmax][ymax][zmax]/fQBackground->GetBinContent(xmax,ymax,zmax); | |
1093 | chiarray[xmax][ymax][zmax] = (y - chiarray[xmax][ymax][zmax]); | |
1094 | ||
1095 | } | |
1096 | Info("StartSignal","Mixing background..."); | |
1097 | Mix(fStackBuffer,fQBackground,fQSecondBackground); //upgrate background | |
1098 | Info("StartSignal","Mixing signal..."); | |
1099 | Mix(stack,fQSignal,fQSecondSignal); //upgrate background | |
5fdc214b | 1100 | |
1101 | ||
1102 | // if ( (chisqrPerDF < 2.0) && (fSwapped == kFALSE) ) | |
1103 | // { | |
1104 | // SwapGeneratingHistograms(); | |
1105 | // } | |
695dc56f | 1106 | |
1107 | } | |
1108 | TFile* filef = TFile::Open("QTBackground.root","recreate"); | |
1109 | fQBackground->Write(); | |
1110 | fQBackground->SetDirectory(0x0); | |
1111 | filef->Close(); | |
1112 | delete filef; | |
1113 | ||
1114 | filef = TFile::Open("QTSignal.root","recreate"); | |
1115 | fQSignal->Write(); | |
1116 | fQSignal->SetDirectory(0x0); | |
1117 | filef->Close(); | |
1118 | delete filef; | |
1119 | ||
1120 | ||
1121 | delete c1; | |
1122 | delete work; | |
1123 | ||
1124 | for (Int_t i = 1; i<=fQNBins; i++) | |
1125 | { | |
1126 | for (Int_t k = 1; k<=fQNBins; k++) | |
1127 | { | |
1128 | delete [] chiarray[i][k]; | |
1129 | delete [] sigarray[i][k]; | |
1130 | } | |
1131 | delete [] chiarray[i]; | |
1132 | delete [] sigarray[i]; | |
1133 | } | |
1134 | delete [] chiarray; | |
1135 | delete [] sigarray; | |
1136 | ||
1137 | } | |
1138 | /***********************************************************/ | |
1139 | ||
1140 | void AliGenHBTosl::StartSignalPass1() | |
1141 | { | |
1142 | //This method makes first part of the initialization of working histograms | |
1143 | //It randomizes qout, qside and qlong from the coarse signal histogram | |
1144 | ||
1145 | Bool_t flag = kTRUE; | |
1146 | TParticle particle(fPID,0,-1,-1,-1,-1,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0); | |
1147 | TParticle* second = &particle; | |
1148 | Double_t qout; | |
1149 | Double_t qside; | |
1150 | Double_t qlong; | |
1151 | ||
1152 | Info("StartSignalPass1","\n\nFirst Pass\n\n"); | |
1153 | ||
1154 | while (flag) | |
1155 | { | |
1156 | Info("StartSignalPass1","NextEvent"); | |
1157 | AliStack* stack = RotateStack(); | |
1158 | AliStack* genstack = fGenerator->GetStack(); | |
1159 | genstack->Reset(); | |
1160 | fGenerator->Generate(); | |
1161 | Int_t j = 0, ntr = 0; | |
1162 | if ( genstack->GetNtrack() < fNpart/2) | |
1163 | { | |
1164 | Warning("StartSignalPass1","**********************************"); | |
1165 | Warning("StartSignalPass1","Generator generated (%d) less particles then expected (%d).", | |
1166 | genstack->GetNtrack(),fNpart/2); | |
1167 | Warning("StartSignalPass1","**********************************"); | |
1168 | } | |
1169 | ||
1170 | Int_t sc = 0;//security check against infinite loop | |
1171 | while ((ntr+1)<fNpart) | |
1172 | { | |
1173 | ||
1174 | // Info("StartSignal","Number of track on output stack: = %d", ntr); | |
1175 | // Info("StartSignal","Number of track on input stack: = %d\n", j); | |
1176 | ||
1177 | TParticle* first = 0; | |
1178 | while (j < genstack->GetNtrack()) | |
1179 | { | |
1180 | TParticle* tmpp = genstack->Particle(j++); | |
1181 | if (tmpp->GetPdgCode() == fPID) | |
1182 | { | |
1183 | if (CheckParticle(tmpp,0x0,stack) == kFALSE) | |
1184 | { | |
1185 | first = tmpp; | |
1186 | break; | |
1187 | } | |
1188 | else | |
1189 | { | |
1190 | Info("StartSignalPass1","Particle did not pass the safety check 1"); | |
1191 | tmpp->Print(); | |
1192 | } | |
1193 | } | |
1194 | } | |
1195 | ||
1196 | if (first == 0x0) | |
1197 | { | |
1198 | if ( fDebug > 2 ) Info("StartSignalPass1","No more particles of that type"); | |
1199 | ||
1200 | break; | |
1201 | } | |
1202 | ||
1203 | SetTrack(first,ntr,stack); | |
1204 | ||
1205 | fQCoarseSignal->GetRandom3(qout,qside,qlong); | |
1206 | ||
1207 | Int_t retval = GetThreeD(first,second,qout,qside,qlong); | |
1208 | if (retval) | |
1209 | { | |
1210 | //Info("StartSignal","Can not find momenta for this OSL and particle"); | |
1211 | continue; | |
1212 | } | |
1213 | //in case this particle is falling into signal area with another | |
1214 | //particle we take a another pair | |
1215 | //it can intruduce artificial correlations | |
1216 | Bool_t checkresult = CheckParticle(second,first,stack); | |
1217 | if ( checkresult && (sc < 10) ) | |
1218 | { | |
1219 | sc++; | |
1220 | Info("StartSignalPass1","Particle did not pass the safety check 2"); | |
1221 | second->Print(); | |
1222 | continue; | |
1223 | } | |
1224 | ||
1225 | sc = 0; | |
1226 | ||
1227 | SetTrack(second,ntr,stack); | |
1228 | } | |
1229 | ||
1230 | Mix(stack,fQSignal,fQSecondSignal); | |
1231 | Mix(fStackBuffer,fQBackground,fQSecondBackground); | |
1232 | ||
1233 | flag = kFALSE; | |
1234 | ||
1235 | for (Int_t k = 1; k<=fQNBins; k++) | |
1236 | { | |
1237 | for (Int_t j = 1; j<=fQNBins; j++) | |
1238 | { | |
1239 | for (Int_t i = 1; i<=fQNBins; i++) | |
1240 | { | |
1241 | if ( (fQBackground->GetBinContent(i,j,k) < fMinFill) ) | |
1242 | { | |
1243 | //(fQSignal->GetBinContent(i,j,k) < fMinFill) || | |
1244 | Info("StartSignalPass1","bin (%d,%d,%d): signal=%f background=%f",i,j,k, | |
1245 | fQSignal->GetBinContent(i,j,k),fQBackground->GetBinContent(i,j,k)); | |
1246 | flag = kTRUE;//continue while | |
1247 | break;//breakes for not while | |
1248 | } | |
1249 | } | |
1250 | if (flag == kTRUE) break; | |
1251 | } | |
1252 | if (flag == kTRUE) break; | |
1253 | } | |
1254 | ||
1255 | }//while (flag) | |
1256 | ||
1257 | ||
1258 | } | |
1259 | /***********************************************************/ | |
1260 | ||
1261 | void AliGenHBTosl::FillCoarseSignal() | |
1262 | { | |
1263 | //Makes coarse signal by multiplying the coarse background and required function | |
1264 | Info("FillCoarseSignal","START"); | |
1265 | for (Int_t k = 1; k <=fQNBins ;k++ ) | |
1266 | { | |
1267 | Double_t z = fQCoarseBackground->GetZaxis()->GetBinCenter(k); | |
1268 | for (Int_t j = 1; j <=fQNBins; j++) | |
1269 | { | |
1270 | Double_t y = fQCoarseBackground->GetYaxis()->GetBinCenter(j); | |
1271 | for (Int_t i = 1; i <=fQNBins; i++) | |
1272 | { | |
1273 | Double_t x = fQCoarseBackground->GetXaxis()->GetBinCenter(i); | |
1274 | Double_t v = GetQOutQSideQLongCorrTheorValue(x,y,z); | |
1275 | Info("FillCoarseSignal","Bin (%d,%d,%d): osl(%f,%f,%f)=%f",i,j,k,x,y,z,v); | |
1276 | fQCoarseSignal->SetBinContent(i,j,k,v*fQCoarseBackground->GetBinContent(i,j,k)); | |
1277 | } | |
1278 | } | |
1279 | } | |
1280 | ||
1281 | //if (GetDebug()) | |
1282 | TestCoarseSignal(); | |
1283 | ||
1284 | Info("FillCoarseSignal","DONE"); | |
1285 | } | |
1286 | /***********************************************************/ | |
1287 | ||
1288 | void AliGenHBTosl::FillCoarse() | |
1289 | { | |
1290 | //creates the statistical background histogram on the base of input from | |
1291 | //fGenerator | |
1292 | Info("FillCoarse","START"); | |
1293 | ||
1294 | AliStack* stack; | |
1295 | Int_t niter = 0; | |
1296 | ||
1297 | Bool_t cont; | |
1298 | TH3D tmph("tmph","tmph",2,0,1,2,0,1,2,0,1); | |
1299 | printf("\n"); | |
1300 | ||
1301 | do | |
1302 | { | |
1303 | // if (niter > 20) break; | |
1304 | ||
5fdc214b | 1305 | cout<<niter++<<" bincont "<<fQCoarseBackground->GetBinContent(30,30,28) |
1306 | <<" "<<fQCoarseBackground->GetBinContent(30,30,29) | |
1307 | <<" "<<fQCoarseBackground->GetBinContent(30,30,30) | |
1308 | <<" "<<fQCoarseBackground->GetBinContent(30,30,31) | |
1309 | <<" "<<fQCoarseBackground->GetBinContent(30,30,32) | |
695dc56f | 1310 | <<"\n"; |
1311 | fflush(0); | |
1312 | ||
1313 | stack = RotateStack(); | |
1314 | fGenerator->SetStack(stack); | |
1315 | fGenerator->Init(); | |
1316 | fGenerator->Generate(); | |
1317 | ||
1318 | Mix(fStackBuffer,fQCoarseBackground,&tmph); | |
1319 | ||
1320 | cont = kFALSE; | |
1321 | ||
1322 | Info("FillCoarse","fMinFill = %d",fMinFill); | |
1323 | for (Int_t k = 1; k<=fQNBins; k++) | |
1324 | { | |
1325 | for (Int_t j = 1; j<=fQNBins; j++) | |
1326 | { | |
1327 | for (Int_t i = 1; i<=fQNBins; i++) | |
1328 | { | |
1329 | if ( fQCoarseBackground->GetBinContent(i,j,k) < fMinFill ) | |
1330 | { | |
1331 | cont = kTRUE; | |
1332 | Info("FillCoarse","bin (%d,%d,%d)=%f",i,j,k,fQCoarseBackground->GetBinContent(i,j,k)); | |
1333 | break; | |
1334 | } | |
1335 | ||
1336 | } | |
1337 | if (cont) break; | |
1338 | } | |
1339 | if (cont) break; | |
1340 | } | |
1341 | }while(cont); | |
1342 | ||
1343 | printf("\n"); | |
1344 | fGenerator->SetStack(0x0); | |
1345 | Info("FillCoarse","DONE"); | |
1346 | ||
1347 | } | |
1348 | /***********************************************************/ | |
1349 | ||
1350 | void AliGenHBTosl::Mix(TList* eventbuffer,TH3D* denominator,TH3D* denominator2) | |
1351 | { | |
1352 | //Fills denominators | |
1353 | //Mixes events stored in the eventbuffer and fills the background histograms | |
1354 | static TStopwatch stoper; | |
1355 | ||
1356 | if (eventbuffer == 0x0) | |
1357 | { | |
1358 | Error("Mix","Buffer List is null."); | |
1359 | return; | |
1360 | } | |
1361 | ||
1362 | if (denominator == 0x0) | |
1363 | { | |
1364 | Error("Mix","Denominator histogram is null."); | |
1365 | return; | |
1366 | } | |
1367 | ||
1368 | if (denominator2 == 0x0) | |
1369 | { | |
1370 | Error("Mix","Denominator2 histogram is null."); | |
1371 | return; | |
1372 | } | |
1373 | ||
1374 | Info("Mix","%s",denominator->GetName()); | |
1375 | stoper.Start(); | |
1376 | ||
1377 | TIter next(eventbuffer); | |
1378 | AliStack* firstevent; | |
1379 | AliStack* secondevent = 0x0; | |
1380 | ||
1381 | while(( firstevent=(AliStack*)next() )) | |
1382 | { | |
1383 | if (secondevent == 0x0) | |
1384 | { | |
1385 | secondevent = firstevent; | |
1386 | continue; | |
1387 | } | |
1388 | // Info("Mix","Mixing %#x with %#x",firstevent,secondevent); | |
1389 | for(Int_t j = 0; j < firstevent->GetNtrack(); j++ ) | |
1390 | { | |
1391 | TParticle* firstpart = firstevent->Particle(j); | |
1392 | ||
1393 | Float_t phi = firstpart->Phi(); | |
1394 | if ( (phi < fSamplePhiMin) || ( phi > fSamplePhiMax)) continue; | |
1395 | ||
1396 | // Info("Mix","Mixing %d phi %f min %f max %f",j,phi,fSamplePhiMin,fSamplePhiMax); | |
1397 | ||
1398 | for(Int_t i = 0; i < secondevent->GetNtrack(); i++ ) | |
1399 | { | |
1400 | TParticle* secondpart = secondevent->Particle(i); | |
1401 | phi = secondpart->Phi(); | |
1402 | if ( (phi < fSamplePhiMin) || ( phi > fSamplePhiMax)) continue; | |
1403 | ||
1404 | Double_t qout; | |
1405 | Double_t qside; | |
1406 | Double_t qlong; | |
1407 | GetQOutQSideQLong(firstpart,secondpart,qout,qside,qlong); | |
1408 | denominator->Fill(qout,qside,qlong); | |
1409 | denominator2->Fill(qout,qside,qlong); | |
1410 | } | |
1411 | } | |
1412 | ||
1413 | secondevent = firstevent; | |
1414 | } | |
1415 | stoper.Stop(); | |
1416 | stoper.Print(); | |
1417 | ||
1418 | } | |
1419 | /***********************************************************/ | |
1420 | ||
1421 | void AliGenHBTosl::Mix(AliStack* stack, TH3D* numerator, TH3D* numerator2) | |
1422 | { | |
1423 | //fils numerator with particles from stack | |
1424 | static TStopwatch stoper; | |
1425 | if (stack == 0x0) | |
1426 | { | |
1427 | Error("Mix","Stack is null."); | |
1428 | return; | |
1429 | } | |
1430 | ||
1431 | if ( (numerator == 0x0) || (numerator2 == 0x0) ) | |
1432 | { | |
1433 | Error("Mix","Numerator histogram is null."); | |
1434 | return; | |
1435 | } | |
1436 | ||
1437 | Info("Mix","%s",numerator->GetName()); | |
1438 | stoper.Start(); | |
1439 | ||
1440 | for(Int_t j = 0; j < stack->GetNtrack(); j++ ) | |
1441 | { | |
1442 | TParticle* firstpart = stack->Particle(j); | |
1443 | Float_t phi = firstpart->Phi(); | |
1444 | if ( (phi < fSamplePhiMin) || ( phi > fSamplePhiMax)) continue; | |
1445 | ||
1446 | for(Int_t i = j+1; i < stack->GetNtrack(); i++ ) | |
1447 | { | |
1448 | TParticle* secondpart = stack->Particle(i); | |
1449 | phi = secondpart->Phi(); | |
1450 | if ( (phi < fSamplePhiMin) || ( phi > fSamplePhiMax)) continue; | |
1451 | Double_t qout; | |
1452 | Double_t qside; | |
1453 | Double_t qlong; | |
1454 | GetQOutQSideQLong(firstpart,secondpart,qout,qside,qlong); | |
1455 | numerator->Fill(qout,qside,qlong); | |
1456 | numerator2->Fill(qout,qside,qlong); | |
1457 | } | |
1458 | } | |
1459 | stoper.Stop(); | |
1460 | stoper.Print(); | |
1461 | ||
1462 | } | |
1463 | /***********************************************************/ | |
1464 | ||
1465 | Double_t AliGenHBTosl::GetQInv(TParticle* f, TParticle* s) | |
1466 | { | |
1467 | //calculates qinv | |
1468 | // cout<<f->Px()<<" "<<s->Px()<<endl; | |
1469 | Double_t pxdiff = f->Px() - s->Px(); | |
1470 | Double_t pydiff = f->Py() - s->Py(); | |
1471 | Double_t pzdiff = f->Pz() - s->Pz(); | |
1472 | Double_t ediff = f->Energy() - s->Energy(); | |
1473 | ||
1474 | Double_t qinvl = ediff*ediff - ( pxdiff*pxdiff + pydiff*pydiff + pzdiff*pzdiff ); | |
1475 | Double_t qinv = TMath::Sqrt(TMath::Abs(qinvl)); | |
1476 | return qinv; | |
1477 | } | |
1478 | /***********************************************************/ | |
1479 | ||
1480 | void AliGenHBTosl::GetQOutQSideQLong(TParticle* f, TParticle* s,Double_t& out, Double_t& side, Double_t& lon) | |
1481 | { | |
1482 | //returns qout,qside and qlong of the pair of particles | |
1483 | out = side = lon = 10e5; | |
1484 | ||
1485 | Double_t pxsum = f->Px() + s->Px(); | |
1486 | Double_t pysum = f->Py() + s->Py(); | |
1487 | Double_t pzsum = f->Pz() + s->Pz(); | |
1488 | Double_t esum = f->Energy() + s->Energy(); | |
1489 | Double_t pxdiff = f->Px() - s->Px(); | |
1490 | Double_t pydiff = f->Py() - s->Py(); | |
1491 | Double_t pzdiff = f->Pz() - s->Pz(); | |
1492 | Double_t ediff = f->Energy() - s->Energy(); | |
1493 | Double_t kt = 0.5*TMath::Hypot(pxsum,pysum); | |
1494 | ||
1495 | Double_t k2 = pxsum*pxdiff+pysum*pydiff; | |
1496 | ||
1497 | if (kt == 0.0) | |
1498 | { | |
1499 | f->Print(); | |
1500 | s->Print(); | |
1501 | kt = 10e5; | |
1502 | } | |
1503 | else | |
1504 | { | |
1505 | out = 0.5*k2/kt; | |
1506 | side = (f->Px()*s->Py()-s->Px()*f->Py())/kt; | |
1507 | } | |
1508 | ||
1509 | Double_t beta = pzsum/esum; | |
1510 | Double_t gamma = 1.0/TMath::Sqrt(1.0 - beta*beta); | |
1511 | ||
1512 | lon = gamma * ( pzdiff - beta*ediff ); | |
1513 | ||
1514 | // out = TMath::Abs(out); | |
1515 | // side = TMath::Abs(side); | |
1516 | // lon = TMath::Abs(lon); | |
1517 | } | |
1518 | ||
1519 | /***********************************************************/ | |
1520 | ||
1521 | Double_t AliGenHBTosl::Scale(TH3D* num, TH3D* den) | |
1522 | { | |
1523 | //Calculates the factor that should be used to scale | |
1524 | //quatience of num and den to 1 at tail | |
1525 | ||
1526 | if (GetDebug()) Info("Scale","Entered Scale()"); | |
1527 | if(!num) | |
1528 | { | |
1529 | Error("Scale","No numerator"); | |
1530 | return 0.0; | |
1531 | } | |
1532 | if(!den) | |
1533 | { | |
1534 | Error("Scale","No denominator"); | |
1535 | return 0.0; | |
1536 | } | |
1537 | ||
1538 | if(fNBinsToScale < 1) | |
1539 | { | |
1540 | return 0.0; | |
1541 | Error("Scale","Number of bins for scaling is smaller thnan 1"); | |
1542 | } | |
1543 | Int_t fNBinsToScaleX = fNBinsToScale; | |
1544 | Int_t fNBinsToScaleY = fNBinsToScale; | |
1545 | Int_t fNBinsToScaleZ = fNBinsToScale; | |
1546 | ||
1547 | Int_t nbinsX = num->GetNbinsX(); | |
1548 | if (fNBinsToScaleX > nbinsX) | |
1549 | { | |
1550 | Error("Scale","Number of X bins for scaling is bigger thnan number of bins in histograms"); | |
1551 | return 0.0; | |
1552 | } | |
1553 | ||
1554 | Int_t nbinsY = num->GetNbinsX(); | |
1555 | if (fNBinsToScaleY > nbinsY) | |
1556 | { | |
1557 | Error("Scale","Number of Y bins for scaling is bigger thnan number of bins in histograms"); | |
1558 | return 0.0; | |
1559 | } | |
1560 | ||
1561 | Int_t nbinsZ = num->GetNbinsZ(); | |
1562 | if (fNBinsToScaleZ > nbinsZ) | |
1563 | { | |
1564 | Error("Scale","Number of Z bins for scaling is bigger thnan number of bins in histograms"); | |
1565 | return 0.0; | |
1566 | } | |
1567 | ||
1568 | if (GetDebug()>0) Info("Scale","No errors detected"); | |
1569 | ||
1570 | Int_t offsetX = nbinsX - fNBinsToScaleX - 1; //bin that we start loop over bins in axis X | |
1571 | Int_t offsetY = nbinsY - fNBinsToScaleY - 1; //bin that we start loop over bins in axis Y | |
1572 | Int_t offsetZ = nbinsZ - fNBinsToScaleZ - 1; //bin that we start loop over bins in axis Z | |
1573 | ||
1574 | Double_t densum = 0.0; | |
1575 | Double_t numsum = 0.0; | |
1576 | ||
1577 | for (Int_t k = offsetZ; k<nbinsZ; k++) | |
1578 | for (Int_t j = offsetY; j<nbinsY; j++) | |
1579 | for (Int_t i = offsetX; i<nbinsX; i++) | |
1580 | { | |
1581 | if ( num->GetBinContent(i,j,k) > 0.0 ) | |
1582 | { | |
1583 | ||
1584 | densum += den->GetBinContent(i,j,k); | |
1585 | numsum += num->GetBinContent(i,j,k); | |
1586 | } | |
1587 | } | |
1588 | ||
1589 | if(GetDebug() > 0) | |
1590 | Info("Scale","numsum=%f densum=%f fNBinsToScaleX=%d fNBinsToScaleY=%d fNBinsToScaleZ=%d", | |
1591 | numsum,densum,fNBinsToScaleX,fNBinsToScaleY,fNBinsToScaleZ); | |
1592 | ||
1593 | if (numsum == 0) return 0.0; | |
1594 | Double_t ret = densum/numsum; | |
1595 | ||
1596 | if(GetDebug() > 0) Info("Scale","returning %f",ret); | |
1597 | return ret; | |
1598 | ||
1599 | } | |
1600 | /***********************************************************/ | |
1601 | ||
1602 | void AliGenHBTosl::TestCoarseSignal() | |
1603 | { | |
1604 | //Tests how works filling from generated histogram shape | |
1605 | TH3D* work = new TH3D("work","work",fQNBins,-fQRange,fQRange,fQNBins,-fQRange,fQRange,fQNBins,-fQRange,fQRange); | |
1606 | ||
1607 | // for (Int_t i = 0; i < fQCoarseBackground->GetEntries() ;i++) | |
1608 | // { | |
1609 | // Double_t x,y,z; | |
1610 | // fQCoarseSignal->GetRandom3(x,y,z); | |
1611 | // work->Fill(x,y,z); | |
1612 | // } | |
1613 | ||
1614 | TCanvas* c1 = new TCanvas(); | |
1615 | c1->cd(); | |
1616 | work->Draw(); | |
1617 | c1->SaveAs("QTwork.root"); | |
1618 | TFile* file = TFile::Open("QTwork.root","update"); | |
1619 | // work->Write(); | |
1620 | work->SetDirectory(0x0); | |
1621 | file->Close(); | |
1622 | ||
1623 | fQCoarseSignal->Draw(); | |
1624 | c1->SaveAs("QTCoarseSignal.root"); | |
1625 | file = TFile::Open("QTCoarseSignal.root","update"); | |
1626 | fQCoarseSignal->Write(); | |
1627 | fQCoarseSignal->SetDirectory(0x0); | |
1628 | file->Close(); | |
1629 | ||
1630 | fQCoarseBackground->Draw(); | |
1631 | c1->SaveAs("QTCoarseBackground.root"); | |
1632 | file = TFile::Open("QTCoarseBackground.root","update"); | |
1633 | fQCoarseBackground->Write(); | |
1634 | fQCoarseBackground->SetDirectory(0x0); | |
1635 | file->Close(); | |
1636 | ||
1637 | TH1 *result = (TH1*)fQCoarseBackground->Clone("ratio"); | |
1638 | result->SetTitle("ratio"); | |
1639 | Float_t normfactor = Scale(work,fQCoarseBackground); | |
1640 | result->Divide(work,fQCoarseBackground,normfactor);//work | |
1641 | ||
1642 | ||
1643 | c1->cd(); | |
1644 | result->Draw(); | |
1645 | c1->SaveAs("QTresult.root"); | |
1646 | file = TFile::Open("QTresult.root","update"); | |
1647 | result->Write(); | |
1648 | result->SetDirectory(0x0); | |
1649 | file->Close(); | |
1650 | ||
1651 | delete work; | |
1652 | delete c1; | |
1653 | } | |
1654 | /***********************************************************/ | |
1655 | ||
5fdc214b | 1656 | void AliGenHBTosl::SetTrack(TParticle* p, Int_t& ntr) |
695dc56f | 1657 | { |
1658 | //Shortcut to PushTrack(bla,bla,bla,bla.............) | |
1659 | if (p->P() == 0.0) | |
1660 | { | |
1661 | Error("SetTrack(TParticle*,Int_t&)","Particle has zero momentum"); | |
1662 | return; | |
1663 | } | |
1664 | ||
1665 | ||
1666 | Int_t pdg = p->GetPdgCode(); | |
1667 | Double_t px = p->Px(); | |
1668 | Double_t py = p->Py(); | |
1669 | Double_t pz = p->Pz(); | |
1670 | Double_t e = p->Energy(); | |
1671 | Double_t vx = p->Vx(); | |
1672 | Double_t vy = p->Vy(); | |
1673 | Double_t vz = p->Vz(); | |
1674 | Double_t tof = p->T(); | |
1675 | ||
1676 | TVector3 pol; | |
1677 | p->GetPolarisation(pol); | |
1678 | ||
1679 | Double_t polx = pol.X(); | |
1680 | Double_t poly = pol.Y(); | |
1681 | Double_t polz = pol.Z(); | |
1682 | TMCProcess mech = AliGenCocktailAfterBurner::IntToMCProcess(p->GetUniqueID()); | |
1683 | Float_t weight = p->GetWeight(); | |
1684 | ||
1685 | AliGenerator::PushTrack(fTrackIt, -1, pdg, px, py, pz, e, vx, vy, vz, tof,polx, poly, polz, mech, ntr, weight); | |
1686 | } | |
1687 | /***********************************************************/ | |
1688 | ||
5fdc214b | 1689 | void AliGenHBTosl::SetTrack(TParticle* p, Int_t& ntr, AliStack* stack) const |
695dc56f | 1690 | { |
1691 | //Shortcut to SetTrack(bla,bla,bla,bla.............) | |
1692 | if (p->P() == 0.0) | |
1693 | { | |
1694 | Error("SetTrack(TParticle*,Int_t&,AliStack*)","Particle has zero momentum"); | |
1695 | return; | |
1696 | } | |
1697 | ||
1698 | Int_t pdg = p->GetPdgCode(); | |
1699 | Double_t px = p->Px(); | |
1700 | Double_t py = p->Py(); | |
1701 | Double_t pz = p->Pz(); | |
1702 | Double_t e = p->Energy(); | |
1703 | ||
1704 | stack->PushTrack(fTrackIt, -1, pdg, px, py, pz, e, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, kPPrimary, ntr,1,0); | |
1705 | } | |
1706 | /***********************************************************/ | |
1707 | ||
1708 | void AliGenHBTosl::Rotate(TVector3& relvector, TVector3& vector) | |
1709 | { | |
1710 | //This method rotates vector about the angeles that are needed to rotate | |
1711 | //relvector from postion (firstPx,0,0) to its actual positon | |
1712 | //In other words: To make equations easier | |
1713 | ||
1714 | static TVector3 first; | |
1715 | if (GetDebug()) | |
1716 | { | |
1717 | first.SetXYZ(relvector.x(),relvector.y(),relvector.z()); | |
1718 | } | |
1719 | ||
1720 | Double_t firstPx = TMath::Sqrt( relvector.x()*relvector.x() + | |
1721 | relvector.y()*relvector.y() + | |
1722 | relvector.z()*relvector.z() ); | |
1723 | ||
1724 | Double_t rotAngleZ = -TMath::ATan2(relvector.y(),relvector.x());//calculating rot angles | |
1725 | relvector.RotateZ(rotAngleZ); | |
1726 | rotAngleZ = -rotAngleZ; | |
1727 | Double_t rotAngleY = -TMath::ATan2(relvector.z(),relvector.x()); | |
1728 | ||
1729 | vector.RotateY(rotAngleY); | |
1730 | vector.RotateZ(rotAngleZ); | |
1731 | ||
1732 | if (GetDebug()>5) | |
1733 | { | |
1734 | TVector3 test(firstPx,0.0,0.0); | |
1735 | test.RotateY(rotAngleY); | |
1736 | test.RotateZ(rotAngleZ); | |
1737 | ::Info("Rotate","Rotation test: px %f %f",first.x(),test.x()); | |
1738 | ::Info("Rotate","Rotation test: py %f %f",first.y(),test.y()); | |
1739 | ::Info("Rotate","Rotation test: pz %f %f",first.z(),test.z()); | |
1740 | } | |
1741 | } | |
1742 | /***********************************************************/ | |
1743 | ||
1744 | Double_t AliGenHBTosl::Rotate(Double_t x,Double_t y,Double_t z) | |
1745 | { | |
1746 | //Rotates vector to base where only x - coordinate is no-zero, and returns that | |
1747 | ||
1748 | Double_t xylength = TMath::Hypot(x,y); | |
1749 | Double_t sinphi = -y/xylength; | |
1750 | Double_t cosphi = x/xylength; | |
1751 | ||
1752 | Double_t xprime = cosphi*x - sinphi*y; | |
1753 | Double_t yprime = sinphi*x + cosphi*y; | |
1754 | ||
1755 | TVector3 v(x,y,z); | |
1756 | Double_t a1 = -TMath::ATan2(v.Y(),v.X()); | |
1757 | ||
5fdc214b | 1758 | if (GetDebug()>5) |
1759 | { | |
1760 | ::Info("Rotate","Xpr = %f Ypr = %f",xprime,yprime); | |
1761 | ::Info("Rotate","Calc sin = %f, and %f",sinphi,TMath::Sin(a1)); | |
1762 | ::Info("Rotate","Calc cos = %f, and %f",cosphi,TMath::Cos(a1)); | |
1763 | } | |
1764 | ||
695dc56f | 1765 | Double_t xprimezlength = TMath::Hypot(xprime,z); |
1766 | ||
1767 | Double_t sintheta = z/xprimezlength; | |
1768 | Double_t costheta = xprime/xprimezlength; | |
1769 | ||
1770 | ||
1771 | Double_t xbis = sintheta*z + costheta*(cosphi*x - sinphi*y); | |
1772 | ||
1773 | ::Info("Rotate","Calculated rot %f, modulus %f",xbis,TMath::Sqrt(x*x+y*y+z*z)); | |
1774 | return xbis; | |
1775 | } | |
1776 | /***********************************************************/ | |
1777 | ||
1778 | AliStack* AliGenHBTosl::RotateStack() | |
1779 | { | |
1780 | //swaps to next stack last goes to first and is reseted | |
1781 | ||
1782 | AliStack* stack; | |
1783 | if ( fStackBuffer->GetSize() >= fBufferSize ) | |
1784 | { | |
1785 | stack = (AliStack*)fStackBuffer->Remove(fStackBuffer->Last()); | |
1786 | } | |
1787 | else | |
1788 | { | |
1789 | stack = new AliStack(fNpart); | |
1790 | } | |
1791 | ||
1792 | fStackBuffer->AddFirst(stack); | |
1793 | stack->Reset(); | |
1794 | return stack; | |
1795 | } | |
1796 | /***********************************************************/ | |
1797 | ||
1798 | Double_t AliGenHBTosl::GetQInvCorrTheorValue(Double_t qinv) const | |
1799 | { | |
1800 | //Function (deprecated) | |
5fdc214b | 1801 | static const Double_t kFactorsqrd = 0.197*0.197;//squared conversion factor SI<->eV |
695dc56f | 1802 | |
5fdc214b | 1803 | return 1.0 + 0.5*TMath::Exp(-qinv*qinv*fQRadius*fQRadius/kFactorsqrd); |
695dc56f | 1804 | } |
1805 | /***********************************************************/ | |
1806 | ||
1807 | Double_t AliGenHBTosl::GetQOutQSideQLongCorrTheorValue(Double_t& out, Double_t& side, Double_t& lon) const | |
1808 | { | |
1809 | //Theoretical function. Wa want to get correlation of the shape of this function | |
5fdc214b | 1810 | static const Double_t kFactorsqrd = 0.197*0.197;//squared conversion factor SI<->eV |
1811 | return 1.0 + 0.7*TMath::Exp(-fQRadius*fQRadius*(out*out+side*side+lon*lon)/kFactorsqrd); | |
695dc56f | 1812 | } |
1813 | /***********************************************************/ | |
1814 | ||
1815 | Bool_t AliGenHBTosl::CheckParticle(TParticle* p, TParticle* aupair ,AliStack* stack) | |
1816 | { | |
1817 | //Checks if a given particle is falling into signal region with any other particle | |
1818 | //already existing on stack | |
1819 | return kFALSE; | |
1820 | ||
1821 | if (fSignalRegion <=0) return kFALSE; | |
1822 | ||
1823 | for (Int_t i = 0; i < stack->GetNtrack(); i++) | |
1824 | { | |
1825 | TParticle* part = stack->Particle(i); | |
1826 | if (part == aupair) continue; | |
1827 | Double_t qout = 10e5; | |
1828 | Double_t qside= 10e5; | |
1829 | Double_t qlong= 10e5; | |
1830 | GetQOutQSideQLong(p,part,qout,qside,qlong); | |
1831 | ||
1832 | if (TMath::Abs(qout) < fSignalRegion) | |
1833 | if (TMath::Abs(qside) < fSignalRegion) | |
1834 | if (TMath::Abs(qlong) < fSignalRegion) | |
1835 | return kTRUE; | |
1836 | } | |
1837 | return kFALSE; | |
1838 | } | |
1839 | /***********************************************************/ | |
1840 | ||
1841 | void AliGenHBTosl::SwapGeneratingHistograms() | |
1842 | { | |
1843 | //Checks if it is time to swap signal and background histograms | |
1844 | //if yes it swaps them | |
1845 | Int_t threshold = fMinFill; | |
1846 | for (Int_t k = 1; k<=fQNBins; k++) | |
1847 | { | |
1848 | for (Int_t j = 1; j<=fQNBins; j++) | |
1849 | { | |
1850 | for (Int_t i = 1; i<=fQNBins; i++) | |
1851 | { | |
1852 | if ( fQSecondBackground->GetBinContent(i,j,k) < threshold) return; | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | } | |
1857 | ||
1858 | ||
1859 | Info("SwapGeneratingHistograms","*******************************************"); | |
1860 | Info("SwapGeneratingHistograms","*******************************************"); | |
1861 | Info("SwapGeneratingHistograms","*******************************************"); | |
1862 | Info("SwapGeneratingHistograms","**** SWAPPING HISTOGRAMS ****"); | |
1863 | Info("SwapGeneratingHistograms","*******************************************"); | |
1864 | Info("SwapGeneratingHistograms","*******************************************"); | |
1865 | Info("SwapGeneratingHistograms","*******************************************"); | |
1866 | ||
1867 | ||
1868 | TH3D* h = fQSignal; | |
1869 | fQSignal = fQSecondSignal; | |
1870 | fQSecondSignal = h; | |
1871 | fQSecondSignal->Reset(); | |
1872 | fQSecondSignal->SetDirectory(0x0); | |
1873 | ||
1874 | h = fQBackground; | |
1875 | fQBackground = fQSecondBackground; | |
1876 | fQSecondBackground = h; | |
1877 | fQSecondBackground->Reset(); | |
1878 | fQSecondBackground->SetDirectory(0x0); | |
1879 | ||
1880 | fSwapped = kTRUE; | |
1881 | ||
1882 | } |