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 //////////////////////////////////////////////////////////////////////
20 // (V-zero) detector version 6 as designed by the Lyon group //
21 // All comments should be sent to Brigitte CHEYNIS : //
22 // b.cheynis@ipnl.in2p3.fr //
23 // Geometry of september 2005 done with ROOT geometrical modeler // //
24 // V0R (now V0C) sits between Z values -89.5 and -84.8 cm //
25 // V0L (now V0A) sits between Z values +339.0 and +341.0 cm //
26 // New coordinate system has been implemented in october 2003 //
28 //////////////////////////////////////////////////////////////////////
30 // --- Standard libraries ---
31 #include <Riostream.h>
35 // --- ROOT libraries ---
36 #include <TClonesArray.h>
37 #include <TGeometry.h>
38 #include <TLorentzVector.h>
41 #include <TObjectTable.h>
42 #include <TVirtualMC.h>
43 #include <TParticle.h>
45 #include <TGeoManager.h>
46 #include <TGeoMaterial.h>
47 #include <TGeoMedium.h>
49 #include <TGeoVolume.h>
51 #include "TGeoMatrix.h"
53 // --- AliRoot header files ---
58 #include "AliVZEROLoader.h"
59 #include "AliVZEROdigit.h"
60 #include "AliVZEROhit.h"
61 #include "AliVZEROv6.h"
66 //_____________________________________________________________________________
67 AliVZEROv6:: AliVZEROv6():AliVZERO()
69 // Standard default constructor
72 //_____________________________________________________________________________
73 AliVZEROv6::AliVZEROv6(const char *name, const char *title):
77 // Standard constructor for V-zero Detector version 6
79 AliDebug(2,"Create VZERO object ");
81 fVersion = 6; // version number
83 // Parameters related to geometry :
84 // V0 part in front of muon arm absorber
86 fV0CHeight1 = 2.5; // height of cell 1, in cm
87 fV0CHeight2 = 4.4; // height of cell 2, in cm
88 fV0CHeight3 = 7.4; // height of cell 3, in cm
89 fV0CHeight4 = 12.5; // height of cell 4, in cm
91 fV0CRBox = 38.0; // outer radius of box, in cm
92 fV0CLidThickness = 0.30; // thickness of Carbon lid
93 fV0CCellThickness = 2.00; // thickness of elementary cell
94 fV0CBoxThickness = 4.70; // thickness of V0C Box
95 fV0COffsetFibers = 1.0; // offset to output fibers, in cm
97 // V0 part on the other side with respect to Interaction Point
99 fV0AHeight1 = 3.3; // height of cell 1, in cm
100 fV0AHeight2 = 6.2; // height of cell 2, in cm
101 fV0AHeight3 = 8.9; // height of cell 3, in cm
102 fV0AHeight4 = 20.9; // height of cell 4, in cm
104 fV0ACellThickness = 2.00; // thickness of elementary cell
106 // Parameters related to light output :
108 fLightYield = 93.75; // Light yield in BC408 (93.75 eV per photon)
109 fLightAttenuation = 0.05; // Light attenuation in fiber (0.05 per meter)
110 fnMeters = 15.0; // Number of meters of clear fibers to PM
111 fFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
114 //_____________________________________________________________________________
116 void AliVZEROv6::BuildGeometry()
121 //_____________________________________________________________________________
122 void AliVZEROv6::CreateGeometry()
125 // Constructs TGeo geometry
127 const int kColorVZERO = kGreen;
129 AliDebug(2,"VZERO ConstructGeometry");
131 TGeoManager *geoManager = gGeoManager;
132 // TGeoMedium *medAir = gGeoManager->GetMedium("VZERO_Air");
133 TGeoMedium *medAlu = gGeoManager->GetMedium("VZERO_Aluminum");
134 TGeoMedium *medCar = gGeoManager->GetMedium("VZERO_Carbon");
135 TGeoMedium *medSci = gGeoManager->GetMedium("VZERO_Scintillator");
137 TGeoVolume *top = gGeoManager->GetVolume("ALIC");
139 Float_t heightRight, r4Right;
141 Float_t zdet = 90.0 - 0.5 - fV0CBoxThickness/2.0;
142 heightRight = fV0CHeight1 + fV0CHeight2 + fV0CHeight3 + fV0CHeight4;
143 r4Right = fV0CRMin + heightRight + 3.0*0.2; // 3 spacings of 2mm between rings
145 // Creation of assembly V0RI - right part - :
147 TGeoVolume *v0RI = new TGeoVolumeAssembly("V0RI");
148 TGeoTranslation *tr1 = new TGeoTranslation(0.,0.,-zdet);
149 top->AddNode(v0RI,1,tr1);
151 // Creation of carbon lids (3.0 mm thick) to keep V0C box shut :
155 partube[0] = fV0CRMin;
156 partube[1] = fV0CRBox;
157 partube[2] = fV0CLidThickness/2.0;
159 TGeoTube *sV0CA = new TGeoTube("V0CA", partube[0], partube[1], partube[2]);
160 TGeoVolume *v0CA = new TGeoVolume("V0CA",sV0CA,medCar);
161 TGeoTranslation *tr2 = new TGeoTranslation(0.,0., fV0CBoxThickness/2.0-partube[2]);
162 TGeoTranslation *tr3 = new TGeoTranslation(0.,0.,-fV0CBoxThickness/2.0+partube[2]);
163 v0RI->AddNode(v0CA,1,tr2);
164 v0RI->AddNode(v0CA,2,tr3);
165 v0CA->SetLineColor(kYellow);
167 // Creation of aluminum rings 3.0 mm thick to maintain the v0RI pieces :
169 partube[0] = fV0CRMin - 0.3;
170 partube[1] = fV0CRMin;
171 partube[2] = fV0CBoxThickness/2.0;
173 TGeoTube *sV0IR = new TGeoTube("V0IR", partube[0], partube[1], partube[2]);
174 TGeoVolume *v0IR = new TGeoVolume("V0IR",sV0IR,medAlu);
175 v0RI->AddNode(v0IR,1,0);
176 v0IR->SetLineColor(kYellow);
178 partube[0] = fV0CRBox;
179 partube[1] = fV0CRBox + 0.3;
180 partube[2] = fV0CBoxThickness/2.0;
182 TGeoTube *sV0ER = new TGeoTube("V0ER", partube[0], partube[1], partube[2]);
183 TGeoVolume *v0ER = new TGeoVolume("V0ER",sV0ER,medAlu);
184 v0RI->AddNode(v0ER,1,0);
185 v0ER->SetLineColor(kYellow);
187 // Creation of assembly V0R0 of scintillator cells within one sector
189 TGeoVolume *v0R0 = new TGeoVolumeAssembly("V0R0");
191 // Elementary cell of ring 1 - right part - :
192 // (cells of ring 1 will be shifted by 2.0 cm backwards to output fibers)
194 Float_t r1Right = fV0CRMin + fV0CHeight1;
195 Float_t offset = fV0CBoxThickness/2.0 - fV0CLidThickness - fV0CCellThickness/2.0;
199 partubs[0] = fV0CRMin;
200 partubs[1] = r1Right;
201 partubs[2] = fV0CCellThickness/2.0;
202 partubs[3] = 90.0-22.5;
203 partubs[4] = 135.0-22.5;
205 TGeoTubeSeg *sV0R1 = new TGeoTubeSeg("V0R1", partubs[0], partubs[1], partubs[2],
206 partubs[3], partubs[4]);
207 TGeoVolume *v0R1 = new TGeoVolume("V0R1",sV0R1,medSci);
208 TGeoTranslation *tr4 = new TGeoTranslation(0.,0.,-offset);
209 v0R0->AddNode(v0R1,1,tr4);
210 v0R1->SetLineColor(kColorVZERO);
212 // Elementary cell of ring 2 - right part - :
213 // (cells of ring 2 will be shifted by 1.0 cm backwards to output fibers)
215 Float_t r2Right = r1Right + fV0CHeight2;
217 partubs[0] = r1Right; // must be equal to 7.1
218 partubs[1] = r2Right; // must be equal to 11.5
219 TGeoTubeSeg *sV0R2 = new TGeoTubeSeg("V0R2", partubs[0], partubs[1], partubs[2],
220 partubs[3], partubs[4]);
221 TGeoVolume *v0R2 = new TGeoVolume("V0R2",sV0R2,medSci);
222 TGeoTranslation *tr5 = new TGeoTranslation(0.0,0.2,-offset + fV0COffsetFibers);
223 v0R0->AddNode(v0R2,1,tr5);
224 v0R2->SetLineColor(kColorVZERO);
226 // Ring 3 - right part - :
228 // Float_t x = TMath::ATan(1.0/156.0) * ((180./TMath::Pi()));
230 r2Right = r2Right + 0.2;
231 Float_t r3Right = r2Right + fV0CHeight3;
232 // printf(" r2 = %f, r3 = %f \n\n", r2Right,r3Right);
234 partubs[0] = r2Right; // must be equal to 11.7
235 partubs[1] = r3Right; // must be equal to 19.1
236 partubs[3] = 90.0-22.5;
237 partubs[4] = 112.5-22.5;
239 TGeoTubeSeg *sV0R3 = new TGeoTubeSeg("V0R3", partubs[0], partubs[1], partubs[2],
240 partubs[3], partubs[4]);
241 TGeoVolume *v0R3 = new TGeoVolume("V0R3",sV0R3,medSci);
242 TGeoTranslation *tr6 = new TGeoTranslation(0.,0.2,-offset + 2.0*fV0COffsetFibers);
243 v0R0->AddNode(v0R3,1,tr6);
244 v0R3->SetLineColor(kColorVZERO);
246 partubs[3] = 112.5-22.5;
247 partubs[4] = 135.0-22.5;
249 TGeoTubeSeg *sV0R4 = new TGeoTubeSeg("V0R4", partubs[0], partubs[1], partubs[2],
250 partubs[3], partubs[4]);
251 TGeoVolume *v0R4 = new TGeoVolume("V0R4",sV0R4,medSci);
252 v0R0->AddNode(v0R4,1,tr6);
253 v0R4->SetLineColor(kColorVZERO);
255 // Ring 4 - right part - :
257 Float_t x = TMath::ATan(3.5/257.5) * ((180./TMath::Pi()));
258 r3Right = r3Right + 0.2 + 0.2; // + 0.2 because no shift in translation here !!
260 partubs[0] = r3Right; // must be equal to 19.5
261 partubs[1] = r4Right; // must be equal to 32.0
262 partubs[3] = 90.0-22.5+x;
263 partubs[4] = 112.5-22.5-x;
265 TGeoTubeSeg *sV0R5 = new TGeoTubeSeg("V0R5", partubs[0], partubs[1], partubs[2],
266 partubs[3], partubs[4]);
267 TGeoVolume *v0R5 = new TGeoVolume("V0R5",sV0R5,medSci);
268 TGeoTranslation *tr7 = new TGeoTranslation(0.,0.0,-offset + 2.0*fV0COffsetFibers);
269 v0R0->AddNode(v0R5,1,tr7);
270 v0R5->SetLineColor(kColorVZERO);
272 partubs[3] = 112.5-22.5+x;
273 partubs[4] = 135.0-22.5-x;
275 TGeoTubeSeg *sV0R6 = new TGeoTubeSeg("V0R6", partubs[0], partubs[1], partubs[2],
276 partubs[3], partubs[4]);
277 TGeoVolume *v0R6 = new TGeoVolume("V0R6",sV0R6,medSci);
278 v0R0->AddNode(v0R6,1,tr7);
279 v0R6->SetLineColor(kColorVZERO);
282 Float_t phiDeg= 180./4.;
284 Int_t nsecR = 1; // number of sectors in right part of V0
285 Int_t ncellsR; // number of scintillating cells
287 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
290 TGeoRotation *rot1 = new TGeoRotation("rot1", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
292 v0RI->AddNode(v0R0,nsecR,rot1);
296 ncellsR = (nsecR - 1) * 6; // 6 cells per sector (2 cells in ring 3 and 4)
297 AliInfo(Form("Number of cells on Right side - V0C = %d", ncellsR));
299 // Creation of assembly v0LE - left part - :
300 // Entrance face at +339.0 cm (new coordinate system) ...
302 Float_t heightLeft = fV0AHeight1 + fV0AHeight2 + fV0AHeight3 + fV0AHeight4;
303 Float_t r4Left = fV0ARMin + heightLeft;
305 TGeoVolume *v0LE = new TGeoVolumeAssembly("V0LE");
307 TGeoTranslation *tr8 = new TGeoTranslation(0.,0.,339.0 + fV0ACellThickness/2.0);
308 top->AddNode(v0LE,1,tr8);
310 // Creation of assembly V0L0 of scintillator cells within one sector
312 TGeoVolume *v0L0 = new TGeoVolumeAssembly("V0L0");
315 offsetLeft = - fV0ACellThickness/2.0;
317 Float_t r1Left = fV0ARMin + fV0AHeight1;
319 partubs[0] = fV0ARMin;
321 partubs[2] = fV0ACellThickness/2.0;
322 partubs[3] = 90.0-22.5;
323 partubs[4] = 135.0-22.5;
325 TGeoTubeSeg *sV0L1 = new TGeoTubeSeg("V0L1", partubs[0], partubs[1], partubs[2],
326 partubs[3], partubs[4]);
327 TGeoVolume *v0L1 = new TGeoVolume("V0L1",sV0L1,medSci);
328 v0L0->AddNode(v0L1,1,gGeoIdentity);
329 v0L1->SetLineColor(kColorVZERO);
330 v0L1->SetVisibility(kTRUE);
332 Float_t r2Left = r1Left + fV0AHeight2;
337 TGeoTubeSeg *sV0L2 = new TGeoTubeSeg("V0L2", partubs[0], partubs[1], partubs[2],
338 partubs[3], partubs[4]);
339 TGeoVolume *v0L2 = new TGeoVolume("V0L2",sV0L2,medSci);
340 v0L0->AddNode(v0L2,1,gGeoIdentity);
341 v0L2->SetLineColor(kColorVZERO);
342 v0L2->SetVisibility(kTRUE);
344 Float_t r3Left = r2Left + fV0AHeight3;
349 TGeoTubeSeg *sV0L3 = new TGeoTubeSeg("V0L3", partubs[0], partubs[1], partubs[2],
350 partubs[3], partubs[4]);
351 TGeoVolume *v0L3 = new TGeoVolume("V0L3",sV0L3,medSci);
352 v0L0->AddNode(v0L3,1,gGeoIdentity);
353 v0L3->SetLineColor(kColorVZERO);
354 v0L3->SetVisibility(kTRUE);
359 TGeoTubeSeg *sV0L4 = new TGeoTubeSeg("V0L4", partubs[0], partubs[1], partubs[2],
360 partubs[3], partubs[4]);
361 TGeoVolume *v0L4 = new TGeoVolume("V0L4",sV0L4,medSci);
362 v0L0->AddNode(v0L4,1,gGeoIdentity);
363 v0L4->SetLineColor(kColorVZERO);
364 v0L4->SetVisibility(kTRUE);
366 Int_t nsecL = 1; // number of sectors in left part of V0
367 Int_t ncellsL; // number of scintillating cells
369 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
372 TGeoRotation *rot1 = new TGeoRotation("rot1", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
373 v0LE->AddNode(v0L0,nsecL,rot1);
377 ncellsL = (nsecL - 1) * 4; // 4 cells per sector
378 AliInfo(Form("Number of cells on Left side - V0A = %d\n", ncellsL));
380 gGeoManager->CloseGeometry();
381 // gGeoManager-> SetVisLevel(4);
382 geoManager->Export("VZEROGeometry.root");
385 //_____________________________________________________________________________
386 void AliVZEROv6::CreateMaterials()
389 // Creates materials used for geometry
391 AliDebug(2,"Create materials");
393 // Int_t *idtmed = fIdtmed->GetArray()-2999;
395 Int_t fieldType = gAlice->Field()->Integ(); // Field type
396 Double_t maxField = gAlice->Field()->Max(); // Field max.
397 Double_t maxBending = 0; // Max Angle
398 Double_t maxStepSize = 0.001; // Max step size
399 Double_t maxEnergyLoss = 1; // Max Delta E
400 Double_t precision = 0.001; // Precision
401 Double_t minStepSize = 0.001; // Minimum step size
403 Double_t a, z, density, radLength, absLength;
404 Float_t tmaxfd, stemax, deemax, epsil, stmin;
416 // Parameters for Air (= 0.01% C + 75% N + 23% O + 1% Ar )
418 Float_t aa[] = { 12.0107, 14.0067, 15.9994, 39.948 };
419 Float_t za[] = { 6., 7., 8., 18. };
420 Float_t wa[] = { 0.000124, 0.755267, 0.231781, 0.012827 };
421 density = 0.00120479;
427 AliMixture(id, "Air", aa, za, density, 4, wa);
428 AliMedium(id, "Air", id, 1, fieldType, maxField, maxBending,
429 maxStepSize, maxEnergyLoss, precision, minStepSize);
431 // Parameters for Aluminum
442 AliMaterial( id, "Aluminum", a, z, density, radLength, 37.2, 0, 0);
443 AliMedium(id, "Aluminum", id, 1, fieldType, maxField, maxBending,
444 maxStepSize, maxEnergyLoss, precision, minStepSize);
446 // Parameters for Carbon
453 AliMaterial(id, "Carbon", a, z, density, radLength, 49.9, 0, 0);
454 AliMedium(id, "Carbon", id, 1, fieldType, maxField, maxBending,
455 maxStepSize, maxEnergyLoss, precision, minStepSize);
457 // Parameters for scintillator
459 Float_t as[] = { 1.00794, 12.011};
460 Float_t zs[] = { 1., 6.};
461 Float_t ws[] = { 1., 1.};
468 AliMixture(id, "Scintillator", as, zs, density, -2, ws);
469 AliMedium(id, "Scintillator", id, 1, fieldType, maxField, maxBending,
470 maxStepSize,maxEnergyLoss,precision,minStepSize);
475 //_____________________________________________________________________________
476 void AliVZEROv6::DrawModule() const
479 // Drawing is done in DrawVZERO.C
481 AliDebug(2,"DrawModule");
485 //_____________________________________________________________________________
486 void AliVZEROv6::DrawGeometry()
489 // Drawing of V0 geometry done in DrawV0.C
491 AliDebug(2,"DrawGeometry");
493 // Here is DrawV0.C :
497 // TGeoVolume *top = gGeoManager->GetMasterVolume();
498 // gGeoManager->SetNsegments(80);
499 // Int_t nd = top->GetNdaughters();
500 // for (Int_t i=0; i<nd; i++) top->GetNode(i)->GetVolume()->InvisibleAll();
501 // TGeoVolume *v0ri = gGeoManager->GetVolume("V0RI");
502 // TGeoVolume *v0le = gGeoManager->GetVolume("V0LE");
503 // v0ri->SetVisibility(kTRUE);
504 // v0ri->VisibleDaughters(kTRUE);
505 // v0le->SetVisibility(kTRUE);
506 // v0le->VisibleDaughters(kTRUE);
507 // top->SetVisibility(kTRUE);
513 //_____________________________________________________________________________
514 void AliVZEROv6::Init()
516 // Initialises version of the VZERO Detector given in Config
517 // Just prints an information message
519 AliInfo(Form("VZERO version %d initialized \n",IsVersion()));
524 //_____________________________________________________________________________
525 void AliVZEROv6::StepManager()
528 // Step Manager, called at each step
532 static Float_t hits[21];
533 static Float_t eloss, tlength;
534 static Int_t nPhotonsInStep;
535 static Int_t nPhotons;
536 static Int_t numStep;
538 Float_t destep, step;
542 // We keep only charged tracks :
544 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
546 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
547 vol[2] = gMC->CurrentVolID(copy);
550 static Int_t idV0R1 = gMC->VolId("V0R1");
551 static Int_t idV0L1 = gMC->VolId("V0L1");
552 static Int_t idV0R2 = gMC->VolId("V0R2");
553 static Int_t idV0L2 = gMC->VolId("V0L2");
554 static Int_t idV0R3 = gMC->VolId("V0R3");
555 static Int_t idV0L3 = gMC->VolId("V0L3");
556 static Int_t idV0R4 = gMC->VolId("V0R4");
557 static Int_t idV0L4 = gMC->VolId("V0L4");
558 static Int_t idV0R5 = gMC->VolId("V0R5");
559 static Int_t idV0R6 = gMC->VolId("V0R6");
561 if ( gMC->CurrentVolID(copy) == idV0R1 ||
562 gMC->CurrentVolID(copy) == idV0L1 )
564 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
565 gMC->CurrentVolID(copy) == idV0L2 )
567 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
568 gMC->CurrentVolID(copy) == idV0R4 ||
569 gMC->CurrentVolID(copy) == idV0L3 )
571 else if ( gMC->CurrentVolID(copy) == idV0R5 ||
572 gMC->CurrentVolID(copy) == idV0R6 ||
573 gMC->CurrentVolID(copy) == idV0L4 )
579 if ( ringNumber > 0.5 ) {
581 destep = gMC->Edep();
582 step = gMC->TrackStep();
584 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
585 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
590 if ( gMC->IsTrackEntering() ) {
592 nPhotons = nPhotonsInStep;
593 gMC->TrackPosition(fTrackPosition);
594 gMC->TrackMomentum(fTrackMomentum);
596 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
597 fTrackMomentum.Py() * fTrackMomentum.Py() );
599 hits[0] = fTrackPosition.X();
600 hits[1] = fTrackPosition.Y();
601 hits[2] = fTrackPosition.Z();
602 hits[3] = Float_t (gMC->TrackPid());
604 hits[4] = gMC->TrackTime();
605 hits[5] = gMC->TrackCharge();
606 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
607 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
608 hits[8] = ringNumber;
611 hits[10] = fTrackMomentum.P();
612 hits[11] = fTrackMomentum.Px();
613 hits[12] = fTrackMomentum.Py();
614 hits[13] = fTrackMomentum.Pz();
616 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
617 hits[14] = par->Vx();
618 hits[15] = par->Vy();
619 hits[16] = par->Vz();
625 nPhotons = nPhotons + nPhotonsInStep;
627 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
629 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * fLightAttenuation * fnMeters));
630 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot);
635 hits[20] = GetCellId (vol, hits);
637 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
650 //_____________________________________________________________________________
651 void AliVZEROv6::AddHit(Int_t track, Int_t *vol, Float_t *hits)
656 TClonesArray &lhits = *fHits;
657 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
660 //_____________________________________________________________________________
661 void AliVZEROv6::AddDigits(Int_t *tracks, Int_t* digits)
664 // Adds a VZERO digit
666 TClonesArray &ldigits = *fDigits;
667 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
670 //_____________________________________________________________________________
671 void AliVZEROv6::MakeBranch(Option_t *option)
674 // Creates new branches in the current Root Tree
677 sprintf(branchname,"%s",GetName());
678 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
680 const char *cH = strstr(option,"H");
682 if (fHits && TreeH() && cH) {
683 TreeH()->Branch(branchname,&fHits, fBufferSize);
684 AliDebug(2,Form("Making Branch %s for hits",branchname));
687 const char *cD = strstr(option,"D");
689 if (fDigits && fLoader->TreeD() && cD) {
690 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
691 AliDebug(2,Form("Making Branch %s for digits",branchname));
696 //_____________________________________________________________________________
697 Int_t AliVZEROv6::GetCellId(Int_t *vol, Float_t *hits)
700 // Returns Id of scintillator cell
701 // Right side from 0 to 47
702 // Left side from 48 to 95
704 // hits[8] = ring number (1 to 4)
705 // vol[1] = copy number (1 to 8)
707 Int_t index = vol[1];
708 Int_t RingNumber = Int_t(hits[8]);
711 // cout << "volID = " << vol[0] << " copy = " << vol[1] << endl;
712 // cout << "X = " << hits[0] << " Y = " << hits[1] << endl;
714 Float_t phi = Float_t(TMath::ATan2(Double_t(hits[1]),Double_t(hits[0])) );
715 Float_t kRaddeg = 180.0/TMath::Pi();
718 if (index < 7) index = index + 8;
722 index = (index - 7) + ( ( RingNumber - 1 ) * 8);}
723 else if(RingNumber >= 3){
724 if(gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R3")||
725 gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R5") )
726 {index = (index*2 - 14) + ( ( RingNumber - 2 ) * 16); }
727 if(gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R4")||
728 gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R6") )
729 {index = (index*2 - 13) + ( ( RingNumber - 2 ) * 16); }
734 else if (hits[2] > 0.0){
735 index = (index - 7 + 48) + ( ( RingNumber - 1 ) * 8);
738 // cout << " ring = " << RingNumber << " phi = "<< phi << endl;
739 // cout << " cellID = " << fCellId << endl;
740 // cout << "**********" << endl;