1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.29 2002/06/04 08:17:04 coppedis
19 Reconstruction method improved
21 Revision 1.28 2002/02/04 09:18:08 coppedis
22 Merging and reconstruction code review
24 Revision 1.26.2.2 2001/11/12 18:41:44 hristov
25 All the changes from the head are merged to the release
27 Revision 1.27 2001/10/21 18:27:45 hristov
28 Several pointers were set to zero in the default constructors to avoid memory management problems
30 Revision 1.26 2001/10/04 14:30:28 coppedis
33 Revision 1.25 2001/10/04 14:24:15 coppedis
36 Revision 1.24 2001/09/26 16:03:41 coppedis
39 Revision 1.23 2001/05/15 13:44:57 coppedis
40 Changes in AddHit method
42 Revision 1.22 2001/05/14 09:53:32 coppedis
43 Adding functions ZMin and ZMax
45 Revision 1.21 2001/04/20 10:05:02 coppedis
48 Revision 1.20 2001/03/26 13:39:20 coppedis
51 Revision 1.19 2001/03/26 09:10:23 coppedis
52 Corrected bug in constructor (fIshunt has to be =1)
54 Revision 1.18 2001/03/20 08:21:55 coppedis
55 ZDC needs PIPE, ABSO, DIPO and SHIL
57 Revision 1.17 2001/03/16 16:18:03 coppedis
58 Correction for superposition of ZDC volumes with MUON arm one
60 Revision 1.16 2001/03/15 16:01:11 coppedis
63 Revision 1.15 2001/01/26 19:56:27 hristov
64 Major upgrade of AliRoot code
66 Revision 1.14 2000/12/12 13:17:01 coppedis
67 Minor corrections suggested by P. Hristov
69 Revision 1.12 2000/12/01 08:19:01 coppedis
70 Adding a message error if ZDC is constructed without DIPO
72 Revision 1.11 2000/11/30 17:21:03 coppedis
73 Introduce hit array fStHits reset only at the end of the event (for digitization)
75 Revision 1.10 2000/11/22 11:32:58 coppedis
78 Revision 1.9 2000/10/02 21:28:20 fca
79 Removal of useless dependecies via forward declarations
81 Revision 1.8 2000/07/10 13:58:01 fca
82 New version of ZDC from E.Scomparin & C.Oppedisano
84 Revision 1.7 2000/01/19 17:17:40 fca
86 Revision 1.6 1999/09/29 09:24:35 fca
87 Introduction of the Copyright and cvs Log
91 ///////////////////////////////////////////////////////////////////////////////
93 // Zero Degree Calorimeter //
94 // This class contains the basic functions for the ZDCs; //
95 // functions specific to one particular geometry are //
96 // contained in the derived classes //
98 ///////////////////////////////////////////////////////////////////////////////
101 #include <iostream.h>
106 #include <TGeometry.h>
109 #include <TDirectory.h>
112 // --- AliRoot header files
114 #include "AliZDCHit.h"
115 #include "AliZDCMergedHit.h"
116 #include "AliZDCMerger.h"
117 #include "AliZDCDigit.h"
118 #include "AliZDCReco.h"
119 #include "AliDetector.h"
120 #include "AliCallf77.h"
121 #include "AliConst.h"
124 #include "AliHeader.h"
129 //_____________________________________________________________________________
133 // Default constructor for the Zero Degree Calorimeter base class
153 //_____________________________________________________________________________
154 AliZDC::AliZDC(const char *name, const char *title)
155 : AliDetector(name,title)
158 // Standard constructor for the Zero Degree Calorimeter base class
165 // Allocate the hits array
166 fHits = new TClonesArray("AliZDCHit",1000);
167 gAlice->AddHitList(fHits);
168 // Allocate the merged hits array
169 fMergedHits = new TClonesArray("AliZDCMergedHit",1000);
171 // Allocate the digits array
172 fDigits = new TClonesArray("AliZDCDigit",1000);
178 //____________________________________________________________________________
187 if(fMerger) delete fMerger;
190 //_____________________________________________________________________________
191 void AliZDC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
194 // Add a ZDC hit to the hit list.
195 // -> We make use of 2 array of hits:
196 // [1] fHits (the usual one) that contains hits for each PRIMARY
197 // [2] fStHits that contains hits for each EVENT and is used to
198 // obtain digits at the end of each event
201 static Float_t primKinEn, xImpact, yImpact, sFlag;
203 AliZDCHit *newquad, *curprimquad;
204 newquad = new AliZDCHit(fIshunt, track, vol, hits);
205 TClonesArray &lhits = *fHits;
208 // First hit -> setting flag for primary or secondary particle
209 Int_t primary = gAlice->GetPrimary(track);
210 if(track != primary){
211 newquad->fSFlag = 1; // SECONDARY particle entering the ZDC
213 else if(track == primary){
214 newquad->fSFlag = 0; // PRIMARY particle entering the ZDC
216 sFlag = newquad->fSFlag;
217 primKinEn = newquad->fPrimKinEn;
218 xImpact = newquad->fXImpact;
219 yImpact = newquad->fYImpact;
222 newquad->fPrimKinEn = primKinEn;
223 newquad->fXImpact = xImpact;
224 newquad->fYImpact = yImpact;
225 newquad->fSFlag = sFlag;
229 for(j=0; j<fNhits; j++){
230 // If hits are equal (same track, same volume), sum them.
231 curprimquad = (AliZDCHit*) lhits[j];
232 if(*curprimquad == *newquad){
233 *curprimquad = *curprimquad+*newquad;
239 //Otherwise create a new hit
240 new(lhits[fNhits]) AliZDCHit(newquad);
246 //_____________________________________________________________________________
247 void AliZDC::AddDigit(Int_t *sect, Int_t digit)
250 AliZDCDigit *newdigit;
251 newdigit = new AliZDCDigit(sect, digit);
253 // printf("\n AddDigit -> sector[0] = %d, sector[1] = %d, digit = %d",
254 // sect[0], sect[1], digit);
255 new((*fDigits)[fNdigits]) AliZDCDigit(*newdigit);
260 //_____________________________________________________________________________
261 void AliZDC::BuildGeometry()
264 // Build the ROOT TNode geometry for event display
265 // in the Zero Degree Calorimeter
266 // This routine is dummy for the moment
271 const int kColorZDC = kBlue;
274 top=gAlice->GetGeometry()->GetNode("alice");
277 brik = new TBRIK("S_ZDC","ZDC box","void",300,300,5);
279 node = new TNode("ZDC","ZDC","S_ZDC",0,0,600,"");
280 node->SetLineColor(kColorZDC);
284 //_____________________________________________________________________________
285 Int_t AliZDC::DistancetoPrimitive(Int_t , Int_t )
288 // Distance from the mouse to the Zero Degree Calorimeter
294 //____________________________________________________________________________
295 Float_t AliZDC::ZMin(void) const
297 // Minimum dimension of the ZDC module in z
301 //____________________________________________________________________________
302 Float_t AliZDC::ZMax(void) const
304 // Maximum dimension of the ZDC module in z
309 //_____________________________________________________________________________
310 void AliZDC::MakeBranch(Option_t *opt, const char *file)
313 // Create Tree branches for the ZDC
317 sprintf(branchname,"%s",GetName());
319 AliDetector::MakeBranch(opt);
321 const char *cS = strstr(opt,"S");
323 if (gAlice->TreeS() && cS) {
324 if(fMergedHits!=0) fMergedHits->Clear();
325 else fMergedHits = new TClonesArray ("AliZDCMergedHit",1000);
326 MakeBranchInTree(gAlice->TreeS(),
327 branchname, &fMergedHits, fBufferSize, file) ;
328 printf("* AliZDC::MakeBranch * Making Branch %s for SDigits\n\n",branchname);
332 const char *cD = strstr(opt,"D");
334 if (gAlice->TreeD() && cD) {
335 if(fDigits!=0) fDigits->Clear();
336 else fDigits = new TClonesArray ("AliZDCDigit",1000);
337 MakeBranchInTree(gAlice->TreeD(),
338 branchname, &fDigits, fBufferSize, file) ;
339 printf("* AliZDC::MakeBranch * Making Branch %s for Digits\n\n",branchname);
343 const char *cR = strstr(opt,"R");
345 if (gAlice->TreeR() && cR) {
346 if(fRecPoints==0) fRecPoints = new TClonesArray("AliZDCReco",1000);
347 MakeBranchInTree(gAlice->TreeR(),
348 branchname, &fRecPoints, fBufferSize, file) ;
349 printf("* AliZDC::MakeBranch * Making Branch %s for RecPoints\n\n",branchname); }
353 //_____________________________________________________________________________
354 void AliZDC::MakeBranchInTreeS(TTree *treeS, const char *file)
357 const Int_t kBufferSize = 4000;
359 sprintf(branchname,"%s",GetName());
360 MakeBranchInTree(treeS, branchname, &fMergedHits, kBufferSize, file) ;
361 printf("* AliZDC::MakeBranch * Making Branch %s for SDigits\n\n",branchname);
364 //_____________________________________________________________________________
365 void AliZDC::MakeBranchInTreeD(TTree *treeD, const char *file)
368 const Int_t kBufferSize = 4000;
370 sprintf(branchname,"%s",GetName());
371 MakeBranchInTree(treeD, branchname, &fDigits, kBufferSize, file) ;
372 printf("* AliZDC::MakeBranch * Making Branch %s for Digits\n\n",branchname);
375 //_____________________________________________________________________________
376 void AliZDC::MakeBranchInTreeR(TTree *treeR, const char *file)
379 const Int_t kBufferSize = 4000;
381 sprintf(branchname,"%s",GetName());
382 MakeBranchInTree(treeR, branchname, &fRecPoints, kBufferSize, file) ;
383 printf("* AliZDC::MakeBranch * Making Branch %s for RecPoints\n\n",branchname);
386 //_____________________________________________________________________________
387 void AliZDC::Hits2SDigits()
389 printf("\n Entering AliZDC::SDigits2Digits() ");
391 //----------------------------------------------------------------
393 printf(" ZDC digitization (without merging)\n");
395 AliZDCMergedHit *MHit;
400 TTree *treeH = gAlice->TreeH();
401 Int_t ntracks = (Int_t) treeH->GetEntries();
405 for(Int_t itrack=0; itrack<ntracks; itrack++){
406 treeH->GetEvent(itrack);
407 for(AliZDCHit* zdcHit=(AliZDCHit*)this->FirstHit(-1); zdcHit;
408 zdcHit = (AliZDCHit*)this->NextHit()){
410 for(j=0; j<2; j++) sector[j] = zdcHit->GetVolume(j);
411 MHits[0] = zdcHit->GetPrimKinEn();
412 MHits[1] = zdcHit->GetXImpact();
413 MHits[2] = zdcHit->GetYImpact();
414 MHits[3] = zdcHit->GetSFlag();
415 MHits[4] = zdcHit->GetLightPMQ();
416 MHits[5] = zdcHit->GetLightPMC();
417 MHits[6] = zdcHit->GetEnergy();
420 MHit = new AliZDCMergedHit(sector, MHits);
421 new((*fMergedHits)[fNMergedhits]) AliZDCMergedHit(*MHit);
422 TClonesArray &sdigits = *fMergedHits;
423 new (sdigits[fNMergedhits]) AliZDCMergedHit(*MHit);
427 gAlice->TreeS()->Fill();
428 gAlice->TreeS()->AutoSave();
429 gAlice->TreeS()->Reset();
431 //----------------------------------------------------------------
433 printf(" ZDC merging and digitization\n");
434 // ### Initialise merging
435 fMerger -> InitMerging();
440 sprintf(treeSName,"TreeS%d",fMerger->EvNum());
441 if(gAlice->GetTreeSFile()){
442 gAlice->GetTreeSFile()->cd();
443 treeS = (TTree*)gAlice->GetTreeSFile()->Get(treeSName);
446 treeS = gAlice->TreeS();
449 printf("\n ERROR -> Can't find TreeS%d in background file\n",fMerger->EvNum());
452 // ### Get TCA of MergedHits from AliZDCMerger
453 fMergedHits = fMerger->MergedHits();
454 fNMergedhits = fMerger->GetNMhits();
457 char branchSDname[20];
458 sprintf(branchSDname,"%s",GetName());
459 if(treeS && fMergedHits){
460 TBranch *branchSD = treeS->GetBranch(branchSDname);
461 if(branchSD) branchSD->SetAddress(&fMergedHits);
462 else if(!branchSD) MakeBranchInTreeS(treeS);
464 AliZDCMergedHit *MHit;
465 TClonesArray &sdigits = *fMergedHits;
468 for(imhit=0; imhit<fNMergedhits; imhit++){
469 MHit = (AliZDCMergedHit*) fMergedHits->UncheckedAt(imhit);
470 new (sdigits[imhit]) AliZDCMergedHit(*MHit);
478 //_____________________________________________________________________________
479 void AliZDC::SDigits2Digits()
481 if(!fMerger){ // Only digitization
482 printf(" ZDC digitization (no merging) \n");
483 fMerger = new AliZDCMerger();
484 fMerger->Digitize(fNMergedhits, fMergedHits);
487 sprintf(hname,"TreeD%d",gAlice->GetHeader()->GetEvent());
488 gAlice->TreeD()->Fill();
489 gAlice->TreeD()->AutoSave();
490 gAlice->TreeD()->Reset();
492 else if(fMerger){ // Merging and digitization
493 printf(" ZDC merging and digitization\n");
494 fMerger->Digitize(fNMergedhits, fMergedHits);
499 sprintf(treeDName,"TreeD%d",fMerger->EvNum());
500 if(gAlice->GetTreeDFile()){
501 treeD = (TTree*)gAlice->GetTreeDFile()->Get(treeDName);
504 treeD = gAlice->TreeD();
507 printf("\n ERROR -> Can't find TreeD%d in background file\n",fMerger->EvNum());
510 char branchDname[20];
511 sprintf(branchDname,"%s",GetName());
512 if(treeD && fDigits){
513 TBranch *branchD = treeD->GetBranch(branchDname);
514 if(branchD) branchD->SetAddress(&fDigits);
515 else if(!branchD) MakeBranchInTreeD(treeD);
523 //_____________________________________________________________________________
524 void AliZDC::Hits2Digits()
526 gAlice->Hits2SDigits();
527 gAlice->SDigits2Digits();
530 //_____________________________________________________________________________
531 void AliZDC::Digits2Reco()
533 printf(" Entering AliZDC::Digits2Reco\n");
534 AliDetector *ZDC = gAlice->GetDetector("ZDC");
535 TClonesArray *ZDCdigits = ZDC->Digits();
539 sprintf(treeDame,"TreeD%d",fMerger->EvNum());
540 if(gAlice->GetTreeDFile()){
541 TD = (TTree*)gAlice->GetTreeDFile()->Get(treeDame);
544 TD = gAlice->TreeD();
548 sprintf(brname,"%s",ZDC->GetName());
549 TBranch *br = TD->GetBranch(brname);
550 if(br) br->SetAddress(&ZDCdigits);
552 else if(!TD) printf(" ERROR -> TreeD NOT found in gAlice object\n");
554 Int_t nt = (Int_t) (TD->GetEntries());
555 gAlice->ResetDigits();
558 Int_t j, idig, ndigits, ZNraw=0, ZPraw=0, ZEMraw=0;
559 // --- Summing raw ADCs for each detector to obtain total light
562 ndigits = ZDCdigits->GetEntries();
566 // --- Loop over event digits
567 for(idig=0; idig<ndigits; idig++){
568 dig = (AliZDCDigit*) ZDCdigits->UncheckedAt(idig);
569 if(dig->GetSector(0) == 1) ZNraw += dig->GetADCValue();
570 else if(dig->GetSector(0) == 2) ZPraw += dig->GetADCValue();
571 else if(dig->GetSector(0) == 3) ZEMraw += dig->GetADCValue();
573 } // TreeD entries loop
574 printf("\n --- ZNraw = %d, ZPraw = %d, ZEMraw = %d\n",ZNraw, ZPraw, ZEMraw);
576 // --- Pedestal subtraction
577 Int_t ZNcorr, ZPcorr, ZEMcorr, MeanPed=50;
578 ZNcorr = ZNraw - 5*MeanPed;
579 ZPcorr = ZPraw - 5*MeanPed;
580 ZEMcorr = ZEMraw - 2*MeanPed;
581 if(ZNcorr<0) ZNcorr=0;
582 if(ZPcorr<0) ZPcorr=0;
583 if(ZEMcorr<0) ZEMcorr=0;
584 printf("\n ZNcorr = %d, ZPcorr = %d, ZEMcorr = %d\n",ZNcorr,ZPcorr,ZEMcorr);
586 // --- ADCchannel -> photoelectrons
587 // NB-> PM gain = 10^(5), ADC resolution = 6.4*10^(-7)
588 Float_t ZNphe, ZPphe, ZEMphe, ConvFactor = 0.064;
589 ZNphe = ZNcorr/ConvFactor;
590 ZPphe = ZPcorr/ConvFactor;
591 ZEMphe = ZEMcorr/ConvFactor;
592 printf("\n ZNphe = %f, ZPphe = %f, ZEMphe = %f\n",ZNphe, ZPphe, ZEMphe);
594 // --- Energy calibration
595 // Conversion factors for hadronic ZDCs goes from phe yield to TRUE incident
596 // energy (conversion from GeV to TeV is included); while for EM calos
597 // conversion is from light yield to detected energy calculated by GEANT
598 // NB -> ZN and ZP conversion factors are constant since incident spectators
599 // have all the same energy, ZEM energy is obtained through a fit over the whole
600 // range of incident particle energies (obtained with full HIJING simulations)
601 Float_t ZNenergy, ZPenergy, ZEMenergy, ZDCenergy;
602 Float_t ZNphexTeV=329., ZPphexTeV=369.;
603 ZNenergy = ZNphe/ZNphexTeV;
604 ZPenergy = ZPphe/ZPphexTeV;
605 ZDCenergy = ZNenergy+ZPenergy;
606 ZEMenergy = -4.81+0.3238*ZEMphe;
607 if(ZEMenergy<0) ZEMenergy=0;
608 printf(" ZNenergy = %f TeV, ZPenergy = %f TeV, ZDCenergy = %f GeV, "
609 "\n ZEMenergy = %f TeV\n", ZNenergy, ZPenergy,
610 ZDCenergy, ZEMenergy);
613 printf("\n\n ### ATTENZIONE!!! -> ev# %d: ZNenergy = %f TeV, ZPenergy = %f TeV, ZDCenergy = %f GeV, "
614 " ZEMenergy = %f TeV\n\n", fMerger->EvNum(), ZNenergy, ZPenergy, ZDCenergy, ZEMenergy);
616 // --- Number of incident spectator nucleons
617 Int_t NDetSpecN, NDetSpecP;
618 NDetSpecN = (Int_t) (ZNenergy/2.760);
619 NDetSpecP = (Int_t) (ZPenergy/2.760);
620 printf("\n NDetSpecN = %d, NDetSpecP = %d\n",NDetSpecN, NDetSpecP);
622 // --- Number of generated spectator nucleons and impact parameter
623 // --------------------------------------------------------------------------------------------------
624 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
625 /*// Fit results for neutrons (Nspectator n true vs. EZN)
626 TF1 *fZNCen = new TF1("fZNCen",
627 "(-2.116909+sqrt(2.116909*2.116909-4*(-0.00651)*(14.556798-x)))/(2*(-0.00651))",0.,158.5);
628 TF1 *fZNPer = new TF1("fZNPer",
629 "(-34.695134-sqrt(34.695134*34.695134-4*(-0.174780)*(-1562.283443-x)))/(2*(-0.174780))",0.,158.5);
630 // Fit results for protons (Nspectator p true vs. EZP)
631 TF1 *fZPCen = new TF1("fZPCen",
632 "(-1.3217+sqrt(1.3217*1.3217-4*(-0.007934)*(4.742873-x)))/(2*(-0.007934))",0.,58.91);
633 TF1 *fZPPer = new TF1("fZPPer",
634 "(-15.788267-sqrt(15.788267*15.788267-4*(-0.133359)*(-383.800673-x)))/(2*(-0.133359))",0.,58.91);
635 // Fit results for total number of spectators (Nspectators true vs. EZDC)
636 TF1 *fZDCCen = new TF1("fZDCCen",
637 "(-1.867335+sqrt(1.867335*1.867335-4*(-0.004119)*(19.100289-x)))/(2*(-0.004119))",0.,220.4);
638 TF1 *fZDCPer = new TF1("fZDCPer",
639 "(-22.429097-sqrt(22.429097*22.429097-4*(-0.072435)*(-1482.034526-x)))/(2*(-0.072435))",0.,220.4);*/
640 // --------------------------------------------------------------------------------------------------
641 // [1] ### Results from a new production -> 0<b<18 fm (Apr 2002)
642 // Fit results for neutrons (Nspectator n true vs. EZN)
643 TF1 *fZNCen = new TF1("fZNCen",
644 "(-2.287920+sqrt(2.287920*2.287920-4*(-0.007629)*(11.921710-x)))/(2*(-0.007629))",0.,164.);
645 TF1 *fZNPer = new TF1("fZNPer",
646 "(-37.812280-sqrt(37.812280*37.812280-4*(-0.190932)*(-1709.249672-x)))/(2*(-0.190932))",0.,164.);
647 // Fit results for protons (Nspectator p true vs. EZP)
648 TF1 *fZPCen = new TF1("fZPCen",
649 "(-1.321353+sqrt(1.321353*1.321353-4*(-0.007283)*(3.550697-x)))/(2*(-0.007283))",0.,60.);
650 TF1 *fZPPer = new TF1("fZPPer",
651 "(-42.643308-sqrt(42.643308*42.643308-4*(-0.310786)*(-1402.945615-x)))/(2*(-0.310786))",0.,60.);
652 // Fit results for total number of spectators (Nspectators true vs. EZDC)
653 TF1 *fZDCCen = new TF1("fZDCCen",
654 "(-1.934991+sqrt(1.934991*1.934991-4*(-0.004080)*(15.111124-x)))/(2*(-0.004080))",0.,225.);
655 TF1 *fZDCPer = new TF1("fZDCPer",
656 "(-34.380639-sqrt(34.380639*34.380639-4*(-0.104251)*(-2612.189017-x)))/(2*(-0.104251))",0.,225.);
657 // --------------------------------------------------------------------------------------------------
658 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
659 /*// Fit results for b (b vs. EZDC)
660 //TF1 *fbCen = new TF1("fbCen","0.611543+0.052231*x-0.000112*x*x+0.000000374*x*x*x",0.,222.);
661 //TF1 *fbPer = new TF1("fbPer","16.552010-0.023866*x-0.00001*x*x",0.,222.);
662 TF1 *fbCen = new TF1("fbCen","0.612769+0.051929*x-0.0001074*x*x+0.0000003724*x*x*x",0.,225.);
663 TF1 *fbPer = new TF1("fbPer","16.6131016-0.026053*x+0.000006893*x*x",0.,225.);*/
664 // --------------------------------------------------------------------------------------------------
665 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
666 TF1 *fbCen = new TF1("fbCen","-0.056923+0.079703*x-0.0004301*x*x+0.000001366*x*x*x",0.,220.);
667 TF1 *fbPer = new TF1("fbPer","17.943998-0.046846*x+0.000074*x*x",0.,220.);
668 // --------------------------------------------------------------------------------------------------
669 // Evaluating Nspectators and b from ZEM energy
670 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
671 /*TF1 *fZEMn = new TF1("fZEMn","124.2-0.0566*x+0.000006014*x*x",0.,3500.);
672 TF1 *fZEMp = new TF1("fZEMp","81.3-0.03834*x+0.000004359*x*x",0.,3500.);
673 TF1 *fZEMsp = new TF1("fZEMsp","205.6-0.09567*x+0.00001056*x*x",0.,3500.);
674 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.);*/
675 // --------------------------------------------------------------------------------------------------
676 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
677 TF1 *fZEMn = new TF1("fZEMn","126.2-0.05399*x+0.000005679*x*x",0.,4000.);
678 TF1 *fZEMp = new TF1("fZEMp","82.49-0.03611*x+0.00000385*x*x",0.,4000.);
679 TF1 *fZEMsp = new TF1("fZEMsp","208.7-0.09006*x+0.000009526*x*x",0.,4000.);
680 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.);
682 Int_t NGenSpecN=0, NGenSpecP=0, NGenSpec=0;
684 // Cut value for Ezem (GeV)
685 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
686 //Float_t EZEMCut = 360.;
687 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
688 Float_t EZEMCut = 420.;
689 Float_t DeltaEZEMSup = 690.;
690 Float_t DeltaEZEMInf = 270.;
691 if(ZEMenergy > (EZEMCut+DeltaEZEMSup)){
692 NGenSpecN = (Int_t) (fZNCen->Eval(ZNenergy));
693 NGenSpecP = (Int_t) (fZPCen->Eval(ZPenergy));
694 NGenSpec = (Int_t) (fZDCCen->Eval(ZDCenergy));
695 ImpPar = fbCen->Eval(ZDCenergy);
696 //printf(" fZNCen = %f, fZPCen = %f, fZDCCen = %f\n",fZNCen->Eval(ZNenergy),
697 // fZPCen->Eval(ZPenergy),fZDCCen->Eval(ZDCenergy));
699 else if(ZEMenergy < (EZEMCut-DeltaEZEMInf)){
700 NGenSpecN = (Int_t) (fZNPer->Eval(ZNenergy));
701 NGenSpecP = (Int_t) (fZPPer->Eval(ZPenergy));
702 NGenSpec = (Int_t) (fZDCPer->Eval(ZDCenergy));
703 ImpPar = fbPer->Eval(ZDCenergy);
704 //printf(" fZNPer = %f, fZPPer = %f, fZDCPer = %f\n",fZNPer->Eval(ZNenergy),
705 // fZPPer->Eval(ZPenergy),fZDCPer->Eval(ZDCenergy));
707 else if(ZEMenergy >= (EZEMCut-DeltaEZEMInf) && ZEMenergy <= (EZEMCut+DeltaEZEMSup)){
708 NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
709 NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
710 NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
711 ImpPar = fZEMb->Eval(ZEMenergy);
712 //printf(" Nspec ZEM = %f, Nspec ZDC = %f\n",fZEMsp->Eval(ZNenergy),fZDCPer->Eval(ZDCenergy));
714 // [1] ### Results in Chiara's PhD thesis -> 0<b<15 fm (Dec 2001)
715 /*if(ZNenergy>158.5) NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
716 if(ZPenergy>58.91) NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
717 if(ZDCenergy>220.4) NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
718 if(ZDCenergy>225.) ImpPar = fZEMb->Eval(ZEMenergy);*/
719 // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002)
720 if(ZNenergy>162.) NGenSpecN = (Int_t) (fZEMn->Eval(ZEMenergy));
721 if(ZPenergy>59.75) NGenSpecP = (Int_t) (fZEMp->Eval(ZEMenergy));
722 if(ZDCenergy>221.5) NGenSpec = (Int_t)(fZEMsp->Eval(ZEMenergy));
723 if(ZDCenergy>220.) ImpPar = fZEMb->Eval(ZEMenergy);
725 if(NGenSpecN>125) NGenSpecN=125;
726 else if(NGenSpecN<0) NGenSpecN=0;
727 if(NGenSpecP>82) NGenSpecP=82;
728 else if(NGenSpecP<0) NGenSpecP=0;
729 if(NGenSpec>207) NGenSpec=207;
730 else if(NGenSpec<0) NGenSpec=0;
731 //printf(" NRecSpecN = %d, NRecSpecP = %d, NRecSpec = %d\n",NGenSpecN,NGenSpecP,NGenSpec);
733 // --- Number of participants
734 Int_t NPart, NPartTot;
735 NPart = 207-NGenSpecN-NGenSpecP;
736 NPartTot = 207-NGenSpec;
737 //printf(" ### NPart(ZP+ZN) = %d, NPart(ZDC) = %d, b = %f fm\n",NPart,NPartTot,ImpPar);
738 printf(" ### NPart = %d, b = %f fm\n",NPartTot,ImpPar);
740 // --- Writing RecPoints TCA
741 // Allocate the RecPoints TCA
742 fRecPoints = new TClonesArray("AliZDCReco",1000);
743 AliZDCReco *reco = new AliZDCReco(ZNenergy,ZPenergy,ZDCenergy,ZEMenergy,
744 NDetSpecN,NDetSpecP,NGenSpecN,NGenSpecP,NGenSpec,NPartTot,ImpPar);
745 new((*fRecPoints)[fNRecPoints]) AliZDCReco(*reco);
747 //fRecPoints->Dump();
751 TTree *treeR = gAlice->TreeR();
752 if(!treeR) printf("\n ERROR -> Can't find TreeR%d in background file\n",fMerger->EvNum());
754 char branchRname[20];
755 sprintf(branchRname,"%s",GetName());
757 TBranch *branchR = treeR->GetBranch(branchRname);
758 if(branchR) branchR->SetAddress(&fRecPoints);
759 else if(!branchR) MakeBranchInTreeR(treeR);