Create fHits in SetTreeAddress only if it was not created before
[u/mrichter/AliRoot.git] / ZDC / AliZDC.cxx
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4c039060 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
88cb7938 16/* $Id$ */
4c039060 17
fe4da5cc 18///////////////////////////////////////////////////////////////////////////////
19// //
359cdddc 20// Zero Degree Calorimeter //
21// This class contains the basic functions for the ZDCs; //
22// functions specific to one particular geometry are //
23// contained in the derived classes //
fe4da5cc 24// //
fe4da5cc 25///////////////////////////////////////////////////////////////////////////////
26
65a824a5 27#include <stdlib.h>
ef0750c2 28#include <Riostream.h>
65a824a5 29
f901045b 30// --- ROOT system
fe4da5cc 31#include <TBRIK.h>
1450a7cd 32#include <TDirectory.h>
33#include <TF1.h>
88cb7938 34#include <TFile.h>
35#include <TGeometry.h>
36#include <TNode.h>
37#include <TTree.h>
38#include <TVirtualMC.h>
fe4da5cc 39
f901045b 40// --- AliRoot header files
88cb7938 41#include "AliDetector.h"
fe4da5cc 42#include "AliZDC.h"
88cb7938 43#include "AliZDCDigit.h"
f901045b 44#include "AliZDCHit.h"
b6d27557 45#include "AliZDCMergedHit.h"
359cdddc 46#include "AliZDCMerger.h"
1450a7cd 47#include "AliZDCReco.h"
88cb7938 48
fe4da5cc 49#include "AliConst.h"
88cb7938 50
359cdddc 51#include "AliHeader.h"
88cb7938 52#include "AliLoader.h"
53#include "AliRun.h"
fe4da5cc 54
fe4da5cc 55
56ClassImp(AliZDC)
57
58//_____________________________________________________________________________
59AliZDC::AliZDC()
60{
61 //
62 // Default constructor for the Zero Degree Calorimeter base class
63 //
2e6fc82a 64
1450a7cd 65 fIshunt = 1;
66 fNoShower = 0;
09630792 67
669dbdaa 68 fMerger = 0;
1450a7cd 69 fHits = 0;
70 fNhits = 0;
09630792 71
1450a7cd 72 fDigits = 0;
73 fNdigits = 0;
2685bf00 74
75 fMergedHits = 0;
2685bf00 76
77 fNRecPoints = 0;
1450a7cd 78 fRecPoints = 0;
359cdddc 79
fe4da5cc 80}
81
82//_____________________________________________________________________________
83AliZDC::AliZDC(const char *name, const char *title)
84 : AliDetector(name,title)
85{
86 //
87 // Standard constructor for the Zero Degree Calorimeter base class
88 //
89
359cdddc 90 fIshunt = 1;
91 fNoShower = 0;
92 fMerger = 0;
f901045b 93
359cdddc 94 // Allocate the hits array
f901045b 95 fHits = new TClonesArray("AliZDCHit",1000);
1cedd08a 96 gAlice->AddHitList(fHits);
b6d27557 97 // Allocate the merged hits array
98 fMergedHits = new TClonesArray("AliZDCMergedHit",1000);
f901045b 99
359cdddc 100 // Allocate the digits array
101 fDigits = new TClonesArray("AliZDCDigit",1000);
102
2685bf00 103 fNRecPoints = 0;
1450a7cd 104 fRecPoints = 0;
866ab5a2 105
106}
107//____________________________________________________________________________
108AliZDC::~AliZDC()
109{
110 //
111 // ZDC destructor
112 //
113
114 fIshunt = 0;
359cdddc 115
b6d27557 116 if(fMerger) delete fMerger;
2e6fc82a 117
fe4da5cc 118}
fe4da5cc 119//_____________________________________________________________________________
120void AliZDC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
121{
122 //
f901045b 123 // Add a ZDC hit to the hit list.
124 // -> We make use of 2 array of hits:
125 // [1] fHits (the usual one) that contains hits for each PRIMARY
126 // [2] fStHits that contains hits for each EVENT and is used to
127 // obtain digits at the end of each event
fe4da5cc 128 //
f901045b 129
68ca986e 130 static Float_t primKinEn, xImpact, yImpact, sFlag;
131
43f34e8b 132 AliZDCHit *newquad, *curprimquad;
f901045b 133 newquad = new AliZDCHit(fIshunt, track, vol, hits);
65d4f2be 134 TClonesArray &lhits = *fHits;
cefa66cb 135
136 if(fNhits==0){
137 // First hit -> setting flag for primary or secondary particle
138 Int_t primary = gAlice->GetPrimary(track);
139 if(track != primary){
140 newquad->fSFlag = 1; // SECONDARY particle entering the ZDC
141 }
142 else if(track == primary){
143 newquad->fSFlag = 0; // PRIMARY particle entering the ZDC
144 }
cefa66cb 145 sFlag = newquad->fSFlag;
146 primKinEn = newquad->fPrimKinEn;
147 xImpact = newquad->fXImpact;
148 yImpact = newquad->fYImpact;
149 }
150 else{
151 newquad->fPrimKinEn = primKinEn;
152 newquad->fXImpact = xImpact;
153 newquad->fYImpact = yImpact;
154 newquad->fSFlag = sFlag;
155 }
156
43f34e8b 157 Int_t j;
f901045b 158 for(j=0; j<fNhits; j++){
2e6fc82a 159 // If hits are equal (same track, same volume), sum them.
f901045b 160 curprimquad = (AliZDCHit*) lhits[j];
161 if(*curprimquad == *newquad){
162 *curprimquad = *curprimquad+*newquad;
163 delete newquad;
68ca986e 164 return;
f901045b 165 }
166 }
f901045b 167
168 //Otherwise create a new hit
169 new(lhits[fNhits]) AliZDCHit(newquad);
170 fNhits++;
171
866ab5a2 172 delete newquad;
cefa66cb 173}
174
866ab5a2 175//_____________________________________________________________________________
359cdddc 176void AliZDC::AddDigit(Int_t *sect, Int_t digit)
f901045b 177{
359cdddc 178//
179 AliZDCDigit *newdigit;
180 newdigit = new AliZDCDigit(sect, digit);
359cdddc 181
182// printf("\n AddDigit -> sector[0] = %d, sector[1] = %d, digit = %d",
183// sect[0], sect[1], digit);
184 new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
185 fNdigits++;
186 delete newdigit;
f901045b 187}
359cdddc 188
fe4da5cc 189//_____________________________________________________________________________
190void AliZDC::BuildGeometry()
191{
192 //
193 // Build the ROOT TNode geometry for event display
194 // in the Zero Degree Calorimeter
195 // This routine is dummy for the moment
196 //
197
68ca986e 198 TNode *node, *top;
199 TBRIK *brik;
359cdddc 200 const int kColorZDC = kBlue;
fe4da5cc 201
202 //
68ca986e 203 top=gAlice->GetGeometry()->GetNode("alice");
fe4da5cc 204
205 // ZDC
fe4da5cc 206 brik = new TBRIK("S_ZDC","ZDC box","void",300,300,5);
68ca986e 207 top->cd();
208 node = new TNode("ZDC","ZDC","S_ZDC",0,0,600,"");
209 node->SetLineColor(kColorZDC);
210 fNodes->Add(node);
fe4da5cc 211}
212
213//_____________________________________________________________________________
214Int_t AliZDC::DistancetoPrimitive(Int_t , Int_t )
215{
216 //
217 // Distance from the mouse to the Zero Degree Calorimeter
218 // Dummy routine
219 //
220 return 9999;
221}
359cdddc 222
223//____________________________________________________________________________
224Float_t AliZDC::ZMin(void) const
225{
226 // Minimum dimension of the ZDC module in z
227 return 11600.;
228}
229
230//____________________________________________________________________________
231Float_t AliZDC::ZMax(void) const
232{
233 // Maximum dimension of the ZDC module in z
234 return 11750.;
235}
236
237
fe4da5cc 238//_____________________________________________________________________________
359cdddc 239 void AliZDC::MakeBranch(Option_t *opt, const char *file)
fe4da5cc 240{
241 //
359cdddc 242 // Create Tree branches for the ZDC
fe4da5cc 243 //
359cdddc 244
245 char branchname[10];
246 sprintf(branchname,"%s",GetName());
88cb7938 247
248 const char *cH = strstr(opt,"H");
249
250 if (cH && fLoader->TreeH())
251 fHits = new TClonesArray("AliZDCHit",1000);
359cdddc 252
253 AliDetector::MakeBranch(opt);
254
255 const char *cS = strstr(opt,"S");
256
88cb7938 257 if (fLoader->TreeS() && cS) {
b6d27557 258 if(fMergedHits!=0) fMergedHits->Clear();
259 else fMergedHits = new TClonesArray ("AliZDCMergedHit",1000);
88cb7938 260 MakeBranchInTree(fLoader->TreeS(),
b6d27557 261 branchname, &fMergedHits, fBufferSize, file) ;
359cdddc 262 printf("* AliZDC::MakeBranch * Making Branch %s for SDigits\n\n",branchname);
263 }
264
265
266 const char *cD = strstr(opt,"D");
267
88cb7938 268 if (fLoader->TreeD() && cD) {
359cdddc 269 if(fDigits!=0) fDigits->Clear();
270 else fDigits = new TClonesArray ("AliZDCDigit",1000);
88cb7938 271 MakeBranchInTree(fLoader->TreeD(),
359cdddc 272 branchname, &fDigits, fBufferSize, file) ;
273 printf("* AliZDC::MakeBranch * Making Branch %s for Digits\n\n",branchname);
274 }
275
276
277 const char *cR = strstr(opt,"R");
278
279 if (gAlice->TreeR() && cR) {
669dbdaa 280 if(fRecPoints==0) fRecPoints = new TClonesArray("AliZDCReco",1000);
359cdddc 281 MakeBranchInTree(gAlice->TreeR(),
282 branchname, &fRecPoints, fBufferSize, file) ;
283 printf("* AliZDC::MakeBranch * Making Branch %s for RecPoints\n\n",branchname); }
284
fe4da5cc 285}
359cdddc 286
287//_____________________________________________________________________________
669dbdaa 288 void AliZDC::MakeBranchInTreeS(TTree *treeS, const char *file)
b6d27557 289{
290 // MakeBranchInTree
291 const Int_t kBufferSize = 4000;
292 char branchname[20];
293 sprintf(branchname,"%s",GetName());
88cb7938 294 if (fMergedHits==0x0) fMergedHits = new TClonesArray("AliZDCMergedHit",1000);
669dbdaa 295 MakeBranchInTree(treeS, branchname, &fMergedHits, kBufferSize, file) ;
b6d27557 296 printf("* AliZDC::MakeBranch * Making Branch %s for SDigits\n\n",branchname);
297
298}
299//_____________________________________________________________________________
300 void AliZDC::MakeBranchInTreeD(TTree *treeD, const char *file)
359cdddc 301{
b6d27557 302 // MakeBranchInTree
303 const Int_t kBufferSize = 4000;
304 char branchname[20];
305 sprintf(branchname,"%s",GetName());
88cb7938 306 if (fDigits == 0x0) fDigits = new TClonesArray("AliZDCDigit",1000);
b6d27557 307 MakeBranchInTree(treeD, branchname, &fDigits, kBufferSize, file) ;
308 printf("* AliZDC::MakeBranch * Making Branch %s for Digits\n\n",branchname);
359cdddc 309
b6d27557 310}
311//_____________________________________________________________________________
1450a7cd 312 void AliZDC::MakeBranchInTreeR(TTree *treeR, const char *file)
313{
314 // MakeBranchInTree
315 const Int_t kBufferSize = 4000;
316 char branchname[20];
317 sprintf(branchname,"%s",GetName());
318 MakeBranchInTree(treeR, branchname, &fRecPoints, kBufferSize, file) ;
319 printf("* AliZDC::MakeBranch * Making Branch %s for RecPoints\n\n",branchname);
320
321}
322//_____________________________________________________________________________
b6d27557 323void AliZDC::Hits2SDigits()
324{
1450a7cd 325 printf("\n Entering AliZDC::SDigits2Digits() ");
b6d27557 326
327 //----------------------------------------------------------------
359cdddc 328 if(!fMerger){
1450a7cd 329 printf(" ZDC digitization (without merging)\n");
b6d27557 330
331 AliZDCMergedHit *MHit;
332 Int_t j, sector[2];
333 Float_t MHits[7];
334 fNMergedhits = 0;
335
88cb7938 336 TTree *treeH = TreeH();
359cdddc 337 Int_t ntracks = (Int_t) treeH->GetEntries();
359cdddc 338 gAlice->ResetHits();
339
340 // Tracks loop
341 for(Int_t itrack=0; itrack<ntracks; itrack++){
342 treeH->GetEvent(itrack);
359cdddc 343 for(AliZDCHit* zdcHit=(AliZDCHit*)this->FirstHit(-1); zdcHit;
b6d27557 344 zdcHit = (AliZDCHit*)this->NextHit()){
345
346 for(j=0; j<2; j++) sector[j] = zdcHit->GetVolume(j);
347 MHits[0] = zdcHit->GetPrimKinEn();
348 MHits[1] = zdcHit->GetXImpact();
349 MHits[2] = zdcHit->GetYImpact();
350 MHits[3] = zdcHit->GetSFlag();
351 MHits[4] = zdcHit->GetLightPMQ();
352 MHits[5] = zdcHit->GetLightPMC();
353 MHits[6] = zdcHit->GetEnergy();
354 }//Hits loop
355
356 MHit = new AliZDCMergedHit(sector, MHits);
357 new((*fMergedHits)[fNMergedhits]) AliZDCMergedHit(*MHit);
358 TClonesArray &sdigits = *fMergedHits;
359 new (sdigits[fNMergedhits]) AliZDCMergedHit(*MHit);
360 fNMergedhits++;
361 delete MHit;
359cdddc 362 }
359cdddc 363 gAlice->TreeS()->Fill();
669dbdaa 364 gAlice->TreeS()->AutoSave();
359cdddc 365 gAlice->TreeS()->Reset();
366 }
b6d27557 367 //----------------------------------------------------------------
368 else if(fMerger){
1450a7cd 369 printf(" ZDC merging and digitization\n");
b6d27557 370 // ### Initialise merging
371 fMerger -> InitMerging();
372
b6d27557 373 // SDigits tree
88cb7938 374
375
376
377 TTree *treeS = fLoader->TreeS();
378 if (treeS == 0x0)
379 {
380 Int_t retval = fLoader->LoadSDigits();
381 if (retval)
382 {
383 Error("Hits2SDigits","Error while loading S. Digits");
384 return;
385 }
386 treeS = fLoader->TreeS();
387 }
388
669dbdaa 389 if(!treeS){
390 printf("\n ERROR -> Can't find TreeS%d in background file\n",fMerger->EvNum());
b6d27557 391 }
669dbdaa 392
393 // ### Get TCA of MergedHits from AliZDCMerger
394 fMergedHits = fMerger->MergedHits();
395 fNMergedhits = fMerger->GetNMhits();
396
b6d27557 397 // Branch address
b6d27557 398 char branchSDname[20];
399 sprintf(branchSDname,"%s",GetName());
669dbdaa 400 if(treeS && fMergedHits){
401 TBranch *branchSD = treeS->GetBranch(branchSDname);
b6d27557 402 if(branchSD) branchSD->SetAddress(&fMergedHits);
669dbdaa 403 else if(!branchSD) MakeBranchInTreeS(treeS);
b6d27557 404 }
b6d27557 405 AliZDCMergedHit *MHit;
406 TClonesArray &sdigits = *fMergedHits;
407 Int_t imhit;
408 //Merged Hits loop
409 for(imhit=0; imhit<fNMergedhits; imhit++){
410 MHit = (AliZDCMergedHit*) fMergedHits->UncheckedAt(imhit);
411 new (sdigits[imhit]) AliZDCMergedHit(*MHit);
412 }
669dbdaa 413 treeS->Fill();
414 treeS->AutoSave();
b6d27557 415 }
359cdddc 416
417}
418
419//_____________________________________________________________________________
420void AliZDC::SDigits2Digits()
421{
422 if(!fMerger){ // Only digitization
669dbdaa 423 printf(" ZDC digitization (no merging) \n");
359cdddc 424 fMerger = new AliZDCMerger();
b6d27557 425 fMerger->Digitize(fNMergedhits, fMergedHits);
426
427 char hname[30];
428 sprintf(hname,"TreeD%d",gAlice->GetHeader()->GetEvent());
429 gAlice->TreeD()->Fill();
669dbdaa 430 gAlice->TreeD()->AutoSave();
b6d27557 431 gAlice->TreeD()->Reset();
359cdddc 432 }
b6d27557 433 else if(fMerger){ // Merging and digitization
1450a7cd 434 printf(" ZDC merging and digitization\n");
b6d27557 435 fMerger->Digitize(fNMergedhits, fMergedHits);
436
b6d27557 437 // Digits tree
88cb7938 438
439 TTree *treeD = fLoader->TreeD();
440 if (treeD == 0x0)
441 {
442 Int_t retval = fLoader->LoadDigits();
443 if (retval)
444 {
445 Error("SDigits2Digits","Error while loading Digits");
446 return;
447 }
448 treeD = fLoader->TreeD();
449 }
450
451
452
669dbdaa 453 if(!treeD){
454 printf("\n ERROR -> Can't find TreeD%d in background file\n",fMerger->EvNum());
b6d27557 455 }
456 // Branch address
b6d27557 457 char branchDname[20];
458 sprintf(branchDname,"%s",GetName());
669dbdaa 459 if(treeD && fDigits){
460 TBranch *branchD = treeD->GetBranch(branchDname);
b6d27557 461 if(branchD) branchD->SetAddress(&fDigits);
669dbdaa 462 else if(!branchD) MakeBranchInTreeD(treeD);
b6d27557 463 }
669dbdaa 464 treeD->Fill();
465 treeD->AutoSave();
359cdddc 466 }
b6d27557 467
359cdddc 468
469}
470//_____________________________________________________________________________
471void AliZDC::Hits2Digits()
472{
473 gAlice->Hits2SDigits();
474 gAlice->SDigits2Digits();
475}
476
477//_____________________________________________________________________________
478void AliZDC::Digits2Reco()
479{
669dbdaa 480 printf(" Entering AliZDC::Digits2Reco\n");
1450a7cd 481 AliDetector *ZDC = gAlice->GetDetector("ZDC");
482 TClonesArray *ZDCdigits = ZDC->Digits();
483
88cb7938 484 TTree *TD = fLoader->TreeD();
485 if (TD == 0x0)
486 {
487 Int_t retval = fLoader->LoadDigits();
488 if (retval)
489 {
490 Error("Digits2Reco","Error while loading Digits");
491 return;
492 }
493 TD = fLoader->TreeD();
494 }
495
496
1450a7cd 497 if(TD){
1450a7cd 498 char brname[20];
499 sprintf(brname,"%s",ZDC->GetName());
500 TBranch *br = TD->GetBranch(brname);
501 if(br) br->SetAddress(&ZDCdigits);
502 }
503 else if(!TD) printf(" ERROR -> TreeD NOT found in gAlice object\n");
504
505 Int_t nt = (Int_t) (TD->GetEntries());
1450a7cd 506 gAlice->ResetDigits();
507
508 AliZDCDigit *dig;
509 Int_t j, idig, ndigits, ZNraw=0, ZPraw=0, ZEMraw=0;
510 // --- Summing raw ADCs for each detector to obtain total light
511 for(j=0; j<nt; j++){
512 TD->GetEvent(j);
513 ndigits = ZDCdigits->GetEntries();
1450a7cd 514 ZNraw=0;
515 ZPraw=0;
516 ZEMraw=0;
517 // --- Loop over event digits
518 for(idig=0; idig<ndigits; idig++){
519 dig = (AliZDCDigit*) ZDCdigits->UncheckedAt(idig);
520 if(dig->GetSector(0) == 1) ZNraw += dig->GetADCValue();
521 else if(dig->GetSector(0) == 2) ZPraw += dig->GetADCValue();
522 else if(dig->GetSector(0) == 3) ZEMraw += dig->GetADCValue();
523 } // Digits loop
524 } // TreeD entries loop
525 printf("\n --- ZNraw = %d, ZPraw = %d, ZEMraw = %d\n",ZNraw, ZPraw, ZEMraw);
526
527 // --- Pedestal subtraction
528 Int_t ZNcorr, ZPcorr, ZEMcorr, MeanPed=50;
529 ZNcorr = ZNraw - 5*MeanPed;
530 ZPcorr = ZPraw - 5*MeanPed;
531 ZEMcorr = ZEMraw - 2*MeanPed;
532 if(ZNcorr<0) ZNcorr=0;
533 if(ZPcorr<0) ZPcorr=0;
534 if(ZEMcorr<0) ZEMcorr=0;
535 printf("\n ZNcorr = %d, ZPcorr = %d, ZEMcorr = %d\n",ZNcorr,ZPcorr,ZEMcorr);
536
537 // --- ADCchannel -> photoelectrons
538 // NB-> PM gain = 10^(5), ADC resolution = 6.4*10^(-7)
539 Float_t ZNphe, ZPphe, ZEMphe, ConvFactor = 0.064;
540 ZNphe = ZNcorr/ConvFactor;
541 ZPphe = ZPcorr/ConvFactor;
542 ZEMphe = ZEMcorr/ConvFactor;
543 printf("\n ZNphe = %f, ZPphe = %f, ZEMphe = %f\n",ZNphe, ZPphe, ZEMphe);
544
545 // --- Energy calibration
546 // Conversion factors for hadronic ZDCs goes from phe yield to TRUE incident
547 // energy (conversion from GeV to TeV is included); while for EM calos
548 // conversion is from light yield to detected energy calculated by GEANT
549 // NB -> ZN and ZP conversion factors are constant since incident spectators
550 // have all the same energy, ZEM energy is obtained through a fit over the whole
551 // range of incident particle energies (obtained with full HIJING simulations)
552 Float_t ZNenergy, ZPenergy, ZEMenergy, ZDCenergy;
553 Float_t ZNphexTeV=329., ZPphexTeV=369.;
554 ZNenergy = ZNphe/ZNphexTeV;
555 ZPenergy = ZPphe/ZPphexTeV;
556 ZDCenergy = ZNenergy+ZPenergy;
557 ZEMenergy = -4.81+0.3238*ZEMphe;
558 if(ZEMenergy<0) ZEMenergy=0;
559 printf(" ZNenergy = %f TeV, ZPenergy = %f TeV, ZDCenergy = %f GeV, "
560 "\n ZEMenergy = %f TeV\n", ZNenergy, ZPenergy,
561 ZDCenergy, ZEMenergy);
562
563 if(ZDCenergy==0)
564 printf("\n\n ### ATTENZIONE!!! -> ev# %d: ZNenergy = %f TeV, ZPenergy = %f TeV, ZDCenergy = %f GeV, "
669dbdaa 565 " ZEMenergy = %f TeV\n\n", fMerger->EvNum(), ZNenergy, ZPenergy, ZDCenergy, ZEMenergy);
1450a7cd 566
567 // --- Number of incident spectator nucleons
568 Int_t NDetSpecN, NDetSpecP;
569 NDetSpecN = (Int_t) (ZNenergy/2.760);
570 NDetSpecP = (Int_t) (ZPenergy/2.760);
571 printf("\n NDetSpecN = %d, NDetSpecP = %d\n",NDetSpecN, NDetSpecP);
572
573 // --- Number of generated spectator nucleons and impact parameter
92e95964 574 // --------------------------------------------------------------------------------------------------
575 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
576 /*// Fit results for neutrons (Nspectator n true vs. EZN)
1450a7cd 577 TF1 *fZNCen = new TF1("fZNCen",
578 "(-2.116909+sqrt(2.116909*2.116909-4*(-0.00651)*(14.556798-x)))/(2*(-0.00651))",0.,158.5);
579 TF1 *fZNPer = new TF1("fZNPer",
580 "(-34.695134-sqrt(34.695134*34.695134-4*(-0.174780)*(-1562.283443-x)))/(2*(-0.174780))",0.,158.5);
581 // Fit results for protons (Nspectator p true vs. EZP)
582 TF1 *fZPCen = new TF1("fZPCen",
583 "(-1.3217+sqrt(1.3217*1.3217-4*(-0.007934)*(4.742873-x)))/(2*(-0.007934))",0.,58.91);
584 TF1 *fZPPer = new TF1("fZPPer",
585 "(-15.788267-sqrt(15.788267*15.788267-4*(-0.133359)*(-383.800673-x)))/(2*(-0.133359))",0.,58.91);
586 // Fit results for total number of spectators (Nspectators true vs. EZDC)
587 TF1 *fZDCCen = new TF1("fZDCCen",
588 "(-1.867335+sqrt(1.867335*1.867335-4*(-0.004119)*(19.100289-x)))/(2*(-0.004119))",0.,220.4);
589 TF1 *fZDCPer = new TF1("fZDCPer",
92e95964 590 "(-22.429097-sqrt(22.429097*22.429097-4*(-0.072435)*(-1482.034526-x)))/(2*(-0.072435))",0.,220.4);*/
591 // --------------------------------------------------------------------------------------------------
592 // [1] ### Results from a new production -> 0<b<18 fm (Apr 2002)
593 // Fit results for neutrons (Nspectator n true vs. EZN)
594 TF1 *fZNCen = new TF1("fZNCen",
595 "(-2.287920+sqrt(2.287920*2.287920-4*(-0.007629)*(11.921710-x)))/(2*(-0.007629))",0.,164.);
596 TF1 *fZNPer = new TF1("fZNPer",
597 "(-37.812280-sqrt(37.812280*37.812280-4*(-0.190932)*(-1709.249672-x)))/(2*(-0.190932))",0.,164.);
598 // Fit results for protons (Nspectator p true vs. EZP)
599 TF1 *fZPCen = new TF1("fZPCen",
600 "(-1.321353+sqrt(1.321353*1.321353-4*(-0.007283)*(3.550697-x)))/(2*(-0.007283))",0.,60.);
601 TF1 *fZPPer = new TF1("fZPPer",
602 "(-42.643308-sqrt(42.643308*42.643308-4*(-0.310786)*(-1402.945615-x)))/(2*(-0.310786))",0.,60.);
603 // Fit results for total number of spectators (Nspectators true vs. EZDC)
604 TF1 *fZDCCen = new TF1("fZDCCen",
605 "(-1.934991+sqrt(1.934991*1.934991-4*(-0.004080)*(15.111124-x)))/(2*(-0.004080))",0.,225.);
606 TF1 *fZDCPer = new TF1("fZDCPer",
607 "(-34.380639-sqrt(34.380639*34.380639-4*(-0.104251)*(-2612.189017-x)))/(2*(-0.104251))",0.,225.);
608 // --------------------------------------------------------------------------------------------------
609 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
610 /*// Fit results for b (b vs. EZDC)
1450a7cd 611 //TF1 *fbCen = new TF1("fbCen","0.611543+0.052231*x-0.000112*x*x+0.000000374*x*x*x",0.,222.);
612 //TF1 *fbPer = new TF1("fbPer","16.552010-0.023866*x-0.00001*x*x",0.,222.);
613 TF1 *fbCen = new TF1("fbCen","0.612769+0.051929*x-0.0001074*x*x+0.0000003724*x*x*x",0.,225.);
92e95964 614 TF1 *fbPer = new TF1("fbPer","16.6131016-0.026053*x+0.000006893*x*x",0.,225.);*/
615 // --------------------------------------------------------------------------------------------------
616 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
617 TF1 *fbCen = new TF1("fbCen","-0.056923+0.079703*x-0.0004301*x*x+0.000001366*x*x*x",0.,220.);
618 TF1 *fbPer = new TF1("fbPer","17.943998-0.046846*x+0.000074*x*x",0.,220.);
619 // --------------------------------------------------------------------------------------------------
1450a7cd 620 // Evaluating Nspectators and b from ZEM energy
92e95964 621 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
622 /*TF1 *fZEMn = new TF1("fZEMn","124.2-0.0566*x+0.000006014*x*x",0.,3500.);
1450a7cd 623 TF1 *fZEMp = new TF1("fZEMp","81.3-0.03834*x+0.000004359*x*x",0.,3500.);
624 TF1 *fZEMsp = new TF1("fZEMsp","205.6-0.09567*x+0.00001056*x*x",0.,3500.);
92e95964 625 TF1 *fZEMb = new TF1("fZEMb","15.8-0.02084*x+2.802e-5*x*x-2.007e-8*x*x*x+6.586e-12*x*x*x*x-8.042e-16*x*x*x*x*x",0.,3500.);*/
626 // --------------------------------------------------------------------------------------------------
627 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
628 TF1 *fZEMn = new TF1("fZEMn","126.2-0.05399*x+0.000005679*x*x",0.,4000.);
629 TF1 *fZEMp = new TF1("fZEMp","82.49-0.03611*x+0.00000385*x*x",0.,4000.);
630 TF1 *fZEMsp = new TF1("fZEMsp","208.7-0.09006*x+0.000009526*x*x",0.,4000.);
631 TF1 *fZEMb = new TF1("fZEMb","16.06-0.01633*x+1.44e-5*x*x-6.778e-9*x*x*x+1.438e-12*x*x*x*x-1.112e-16*x*x*x*x*x",0.,4000.);
1450a7cd 632
633 Int_t NGenSpecN=0, NGenSpecP=0, NGenSpec=0;
634 Double_t ImpPar=0;
92e95964 635 // Cut value for Ezem (GeV)
636 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
637 //Float_t EZEMCut = 360.;
638 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
639 Float_t EZEMCut = 420.;
640 Float_t DeltaEZEMSup = 690.;
641 Float_t DeltaEZEMInf = 270.;
642 if(ZEMenergy > (EZEMCut+DeltaEZEMSup)){
1450a7cd 643 NGenSpecN = (Int_t) (fZNCen->Eval(ZNenergy));
644 NGenSpecP = (Int_t) (fZPCen->Eval(ZPenergy));
645 NGenSpec = (Int_t) (fZDCCen->Eval(ZDCenergy));
646 ImpPar = fbCen->Eval(ZDCenergy);
647 //printf(" fZNCen = %f, fZPCen = %f, fZDCCen = %f\n",fZNCen->Eval(ZNenergy),
648 // fZPCen->Eval(ZPenergy),fZDCCen->Eval(ZDCenergy));
649 }
92e95964 650 else if(ZEMenergy < (EZEMCut-DeltaEZEMInf)){
1450a7cd 651 NGenSpecN = (Int_t) (fZNPer->Eval(ZNenergy));
652 NGenSpecP = (Int_t) (fZPPer->Eval(ZPenergy));
653 NGenSpec = (Int_t) (fZDCPer->Eval(ZDCenergy));
654 ImpPar = fbPer->Eval(ZDCenergy);
655 //printf(" fZNPer = %f, fZPPer = %f, fZDCPer = %f\n",fZNPer->Eval(ZNenergy),
656 // fZPPer->Eval(ZPenergy),fZDCPer->Eval(ZDCenergy));
657 }
92e95964 658 else if(ZEMenergy >= (EZEMCut-DeltaEZEMInf) && ZEMenergy <= (EZEMCut+DeltaEZEMSup)){
659 NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
660 NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
661 NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
662 ImpPar = fZEMb->Eval(ZEMenergy);
663 //printf(" Nspec ZEM = %f, Nspec ZDC = %f\n",fZEMsp->Eval(ZNenergy),fZDCPer->Eval(ZDCenergy));
664 }
665 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
666 /*if(ZNenergy>158.5) NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
1450a7cd 667 if(ZPenergy>58.91) NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
668 if(ZDCenergy>220.4) NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
92e95964 669 if(ZDCenergy>225.) ImpPar = fZEMb->Eval(ZEMenergy);*/
670 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
671 if(ZNenergy>162.) NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
672 if(ZPenergy>59.75) NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
673 if(ZDCenergy>221.5) NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
674 if(ZDCenergy>220.) ImpPar = fZEMb->Eval(ZEMenergy);
1450a7cd 675
676 if(NGenSpecN>125) NGenSpecN=125;
677 else if(NGenSpecN<0) NGenSpecN=0;
678 if(NGenSpecP>82) NGenSpecP=82;
679 else if(NGenSpecP<0) NGenSpecP=0;
680 if(NGenSpec>207) NGenSpec=207;
681 else if(NGenSpec<0) NGenSpec=0;
92e95964 682 //printf(" NRecSpecN = %d, NRecSpecP = %d, NRecSpec = %d\n",NGenSpecN,NGenSpecP,NGenSpec);
1450a7cd 683
684 // --- Number of participants
685 Int_t NPart, NPartTot;
92e95964 686 NPart = 207-NGenSpecN-NGenSpecP;
687 NPartTot = 207-NGenSpec;
688 //printf(" ### NPart(ZP+ZN) = %d, NPart(ZDC) = %d, b = %f fm\n",NPart,NPartTot,ImpPar);
689 printf(" ### NPart = %d, b = %f fm\n",NPartTot,ImpPar);
1450a7cd 690
691 // --- Writing RecPoints TCA
692 // Allocate the RecPoints TCA
693 fRecPoints = new TClonesArray("AliZDCReco",1000);
694 AliZDCReco *reco = new AliZDCReco(ZNenergy,ZPenergy,ZDCenergy,ZEMenergy,
695 NDetSpecN,NDetSpecP,NGenSpecN,NGenSpecP,NGenSpec,NPartTot,ImpPar);
696 new((*fRecPoints)[fNRecPoints]) AliZDCReco(*reco);
1450a7cd 697 //fNRecPoints++;
698 //fRecPoints->Dump();
699 delete reco;
700
701 // TreeR
702 TTree *treeR = gAlice->TreeR();
669dbdaa 703 if(!treeR) printf("\n ERROR -> Can't find TreeR%d in background file\n",fMerger->EvNum());
1450a7cd 704 // Branch address
705 char branchRname[20];
706 sprintf(branchRname,"%s",GetName());
707 if(fRecPoints){
708 TBranch *branchR = treeR->GetBranch(branchRname);
709 if(branchR) branchR->SetAddress(&fRecPoints);
710 else if(!branchR) MakeBranchInTreeR(treeR);
711 }
712 treeR->Fill();
669dbdaa 713 treeR->AutoSave();
1450a7cd 714 treeR->Reset();
359cdddc 715}
716
717