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 4 as designed by the Lyon group //
21 // All comments should be sent to Brigitte CHEYNIS : //
22 // b.cheynis@ipnl.in2p3.fr //
23 // Geometry of the 24th of february 2004 //
24 // (now 4 rings instead of 3 rings as in previous version) //
25 // V0R (now V0C) sits between Z values -89.4 and -84.9 cm //
26 // V0L (now V0A) sits between Z values +350.0 and +352.0 cm //
27 // New coordinate system has been implemented in october 2003 //
29 //////////////////////////////////////////////////////////////////////
31 // --- Standard libraries ---
32 #include <Riostream.h>
36 // --- ROOT libraries ---
37 #include <TClonesArray.h>
38 #include <TLorentzVector.h>
40 #include <TObjectTable.h>
41 #include <TVirtualMC.h>
42 #include <TParticle.h>
44 // --- AliRoot header files ---
50 #include "AliVZEROLoader.h"
51 #include "AliVZEROdigit.h"
52 #include "AliVZEROhit.h"
53 #include "AliVZEROv4.h"
57 //_____________________________________________________________________________
58 AliVZEROv4:: AliVZEROv4():AliVZERO(),
63 fLightAttenuation(0.05),
68 // Standard default constructor
71 //_____________________________________________________________________________
72 AliVZEROv4::AliVZEROv4(const char *name, const char *title):
78 fLightAttenuation(0.05),
84 // Standard constructor for V-zero Detector version 2
86 AliDebug(2,"Create VZERO object");
88 // fLightYield = 93.75; // Light yield in BC408 (93.75 eV per photon)
89 // fLightAttenuation = 0.05; // Light attenuation in fiber (0.05 per meter)
90 // fnMeters = 15.0; // Number of meters of clear fibers to PM
91 // fFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
94 //_____________________________________________________________________________
95 void AliVZEROv4::CreateGeometry()
98 // Creates the GEANT geometry of the V-zero Detector version 3
100 AliDebug(2,"Create VZERO Geometry ");
102 Int_t *idtmed = fIdtmed->GetArray()-2999;
112 Float_t height1Right, height2Right, height3Right, height4Right;
116 Float_t halfThickQua;
119 Float_t r0Right, r4Right;
120 Float_t pi = TMath::Pi();
122 height1Right = 3.42; // height of cell 1, in cm
123 height2Right = 6.78; // height of cell 2, in cm
124 height3Right = 7.11; // height of cell 3, in cm
125 height4Right = 10.91; // height of cell 4, in cm
127 theta = pi/6.0/2.0; // half angular opening = 15 degrees
129 halfThickQua= fThickness1/2.0; // half thickness of elementary cell (inner ring)
131 // distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
132 // absorber nose sitting at 90 cm. Will use -zdet later...
133 // size of V0R box (fThickness) is increased by 1 mm as compared to version v2
135 fThickness = fThickness + 0.1;
136 zdet = 90.0 - 0.6 - fThickness/2.0; // distance to vertex (along Z axis)
137 r0Right = 4.05; // closest distance to center of the beam pipe
138 heightRight = height1Right + height2Right + height3Right + height4Right;
139 r4Right = r0Right + heightRight;
141 // Creation of mother volume v0LE - left part - :
142 // Entrance face at +350.0 cm (new coordinate system) ...
148 partube[2] = fThickness1/2.0;
150 gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
152 // Creation of five rings - left part - :
153 // Entrance face at +350.0 cm (new coordinate system) ...
155 // Mother volume v0L0 in which will be set 5 scintillator cells
159 Float_t r0Left = 4.3;
160 Float_t height1Left = 3.6;
161 Float_t height2Left = 6.4;
162 Float_t height3Left = 14.9;
163 Float_t height4Left = 14.4;
164 Float_t heightLeft = height1Left + height2Left + height3Left + height4Left;
166 Float_t r4Left = r0Left + heightLeft;
170 partubs[2] = fThickness1/2.0;
171 partubs[3] = 90.0-15.0;
172 partubs[4] = 120.0-15.0;
174 gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5); // air volume
176 Float_t r1Left = r0Left + height1Left;
181 gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5); // quartz volume
182 gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
184 Float_t r2Left = r1Left + height2Left;
189 gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5); // quartz volume
190 gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
192 Float_t r3Left = r2Left + height3Left;
197 gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5); // quartz volume
198 gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
203 gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5); // quartz volume
204 gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
206 // Creation of mother volume v0RI - right part - :
208 partube[0] = r0Right - 0.2;
209 partube[1] = r4Right + 1.0;
210 partube[2] = fThickness/2.0;
212 gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
214 // Creation of carbon lids (3.5 mm thick) to keep v0RI box shut...
216 Float_t lidThickness = 0.35;
218 partube[0] = r0Right;
219 partube[1] = r4Right;
220 partube[2] = +lidThickness/2.0;
222 gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
223 gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
224 gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
226 // Creation of aluminum rings to maintain the v0RI pieces ...
228 partube[0] = r0Right - 0.2;
229 partube[1] = r0Right;
230 partube[2] = +fThickness/2.0;
232 gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
233 gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
235 partube[0] = r4Right;
236 partube[1] = r4Right + 1.0;
237 partube[2] = +fThickness/2.0;
239 gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
240 gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
242 // Mother volume v0R0 in which will be set 4 scintillator cells
244 partubs[0] = r0Right;
245 partubs[1] = r4Right;
246 partubs[2] = fThickness/2.0;
247 partubs[3] = 90.0-15.0;
248 partubs[4] = 120.0-15.0;
250 gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5); // air volume
252 // Elementary cell of ring 1 :
253 // (cells of ring 1 will be shifted by 1.7 cm towards vertex to output fibers)
255 Float_t offsetFibers = 1.7;
256 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
257 Float_t r1Right = r0Right + height1Right;
259 partubs[0] = r0Right;
260 partubs[1] = r1Right;
261 partubs[2] = fThickness1/2.0;
263 gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5); // scintillator volume
264 gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
266 // Elementary cell of ring 2 :
268 Float_t r2Right = r1Right + height2Right;
270 partubs[0] = r1Right;
271 partubs[1] = r2Right;
273 gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5); // scintillator volume
274 gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
277 // Elementary cell of ring 3 :
279 Float_t r3Right = r2Right + height3Right;
281 partubs[0] = r2Right;
282 partubs[1] = r3Right;
284 gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5); // scintillator volume
285 gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
287 // Elementary cell of ring 4 :
289 partubs[0] = r3Right;
290 partubs[1] = r4Right;
292 gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5); // scintillator volume
293 gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
295 Float_t phiDeg = 180./6.;
299 for(Float_t phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
301 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
302 gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
303 0.0,0.0,idrotm[902],"ONLY");
307 gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
309 ncellsR = (ndetR - 1) * 4;
310 AliInfo(Form("Number of cells on Right side = %d", ncellsR));
314 for(Float_t phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
316 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
317 gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
318 0.0,0.0,idrotm[902],"ONLY");
322 gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
324 ncellsL = (ndetL - 1) * 4;
325 AliInfo(Form("Number of cells on Left side = %d", ncellsL));
329 //_____________________________________________________________________________
330 void AliVZEROv4::CreateMaterials()
333 // Creates materials used for geometry
335 AliDebug(2,"VZERO create materials");
338 Float_t ppckov[14] = { 5.5e-9, 5.7e-9, 5.9e-9, 6.1e-9, 6.3e-9, 6.5e-9, 6.7e-9,
339 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
342 Float_t ppckov_alu[14] = { 5.5e-9, 5.7e-9, 5.9e-9, 6.1e-9, 6.3e-9, 6.5e-9, 6.7e-9,
343 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
345 Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
346 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
349 Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
350 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
352 Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
355 Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
358 Float_t absco_alu[14] = { 1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,
359 1e-4,1e-4,1e-4,1e-4 };
360 Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
364 Int_t *idtmed = fIdtmed->GetArray()-2999;
367 // Parameters related to Quarz (SiO2) :
369 Float_t aqua[2], zqua[2], densqua, wmatqua[2];
381 // Parameters related to aluminum sheets :
388 // Parameters related to scintillator CH :
390 Float_t ascin[2] = {1.00794,12.011};
391 Float_t zscin[2] = {1.,6.};
392 Float_t wscin[2] = {1.,1.};
393 Float_t denscin = 1.032;
397 Float_t aAir[4]={12.,14.,16.,36.};
398 Float_t zAir[4]={6.,7.,8.,18.};
399 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
400 Float_t dAir = 1.20479E-3;
402 // Definition of materials :
406 AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
407 AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
408 AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
409 AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
410 AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
411 AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
413 AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
416 Int_t iSXFLD = gAlice->Field()->Integ();
417 Float_t sXMGMX = gAlice->Field()->Max();
419 Float_t tmaxfd, stemax, deemax, epsil, stmin;
428 AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
429 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
433 AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
434 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
436 AliMedium(2, "CARBON$ ", 2, 1, iSXFLD, sXMGMX,
437 tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
439 AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
440 tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
442 AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
443 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
446 AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
447 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
449 AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
451 gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
452 gMC->Gstpar(idtmed[3000], "HADR", 1.);
453 gMC->Gstpar(idtmed[3000], "DCAY", 1.);
454 gMC->Gstpar(idtmed[3000], "DRAY", 1.);
456 gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
457 gMC->Gstpar(idtmed[3001], "HADR", 1.);
458 gMC->Gstpar(idtmed[3001], "DCAY", 1.);
459 gMC->Gstpar(idtmed[3001], "DRAY", 1.);
461 gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
462 gMC->Gstpar(idtmed[3002], "HADR", 1.);
463 gMC->Gstpar(idtmed[3002], "DCAY", 1.);
464 gMC->Gstpar(idtmed[3002], "DRAY", 1.);
465 gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
466 gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
468 gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
469 gMC->Gstpar(idtmed[3003], "HADR", 1.);
470 gMC->Gstpar(idtmed[3003], "DCAY", 1.);
471 gMC->Gstpar(idtmed[3003], "DRAY", 1.);
473 gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
474 gMC->Gstpar(idtmed[3004], "HADR", 1.);
475 gMC->Gstpar(idtmed[3004], "DCAY", 1.);
476 gMC->Gstpar(idtmed[3004], "DRAY", 1.);
477 gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
478 gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
480 gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
481 gMC->Gstpar(idtmed[3005], "HADR", 1.);
482 gMC->Gstpar(idtmed[3005], "DCAY", 1.);
483 gMC->Gstpar(idtmed[3005], "DRAY", 1.);
484 gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
485 gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
488 // geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
489 // geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
491 // gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
492 // gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
496 //_____________________________________________________________________________
497 void AliVZEROv4::DrawModule() const
500 // Drawing is done in DrawVZERO.C
502 AliDebug(2,"VZERO DrawModule");
505 //_____________________________________________________________________________
506 void AliVZEROv4::Init()
508 // Initialises version 2 of the VZERO Detector
509 // Just prints an information message
511 AliDebug(2,Form("VZERO version %d initialized",IsVersion()));
513 // gMC->SetMaxStep(fMaxStepAlu);
514 // gMC->SetMaxStep(fMaxStepQua);
519 //_____________________________________________________________________________
520 void AliVZEROv4::StepManager()
523 // Step Manager, called at each step
527 static Float_t hits[21];
528 static Float_t eloss, tlength;
529 static Int_t nPhotonsInStep;
530 static Int_t nPhotons;
531 static Int_t numStep;
533 Float_t destep, step;
537 // We keep only charged tracks :
539 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
541 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
542 vol[2] = gMC->CurrentVolID(copy);
545 static Int_t idV0R1 = gMC->VolId("V0R1");
546 static Int_t idV0L1 = gMC->VolId("V0L1");
547 static Int_t idV0R2 = gMC->VolId("V0R2");
548 static Int_t idV0L2 = gMC->VolId("V0L2");
549 static Int_t idV0R3 = gMC->VolId("V0R3");
550 static Int_t idV0L3 = gMC->VolId("V0L3");
551 static Int_t idV0R4 = gMC->VolId("V0R4");
552 static Int_t idV0L4 = gMC->VolId("V0L4");
554 if ( gMC->CurrentVolID(copy) == idV0R1 ||
555 gMC->CurrentVolID(copy) == idV0L1 )
557 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
558 gMC->CurrentVolID(copy) == idV0L2 )
560 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
561 gMC->CurrentVolID(copy) == idV0L3 )
563 else if ( gMC->CurrentVolID(copy) == idV0R4 ||
564 gMC->CurrentVolID(copy) == idV0L4 )
569 if ( ringNumber > 0.5 ) {
571 destep = gMC->Edep();
572 step = gMC->TrackStep();
574 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
575 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
580 if ( gMC->IsTrackEntering() ) {
582 nPhotons = nPhotonsInStep;
583 gMC->TrackPosition(fTrackPosition);
584 gMC->TrackMomentum(fTrackMomentum);
586 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
587 fTrackMomentum.Py() * fTrackMomentum.Py() );
589 hits[0] = fTrackPosition.X();
590 hits[1] = fTrackPosition.Y();
591 hits[2] = fTrackPosition.Z();
592 hits[3] = Float_t (gMC->TrackPid());
594 hits[4] = gMC->TrackTime();
595 hits[5] = gMC->TrackCharge();
596 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
597 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
598 hits[8] = ringNumber;
601 hits[10] = fTrackMomentum.P();
602 hits[11] = fTrackMomentum.Px();
603 hits[12] = fTrackMomentum.Py();
604 hits[13] = fTrackMomentum.Pz();
606 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
607 hits[14] = par->Vx();
608 hits[15] = par->Vy();
609 hits[16] = par->Vz();
615 nPhotons = nPhotons + nPhotonsInStep;
617 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
619 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * fLightAttenuation * fnMeters));
620 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot);
625 hits[20] = GetCellId (vol, hits);
627 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
640 //_____________________________________________________________________________
641 void AliVZEROv4::AddHit(Int_t track, Int_t *vol, Float_t *hits)
646 TClonesArray &lhits = *fHits;
647 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
650 //_____________________________________________________________________________
651 void AliVZEROv4::AddDigits(Int_t *tracks, Int_t* digits)
654 // Adds a VZERO digit
656 TClonesArray &ldigits = *fDigits;
657 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
660 //_____________________________________________________________________________
661 void AliVZEROv4::MakeBranch(Option_t *option)
664 // Creates new branches in the current Root Tree
667 sprintf(branchname,"%s",GetName());
668 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
670 const char *cH = strstr(option,"H");
672 if (fHits && fLoader->TreeH() && cH) {
673 fLoader->TreeH()->Branch(branchname,&fHits, fBufferSize);
674 AliDebug(2,Form("Making Branch %s for hits",branchname));
677 const char *cD = strstr(option,"D");
679 if (fDigits && fLoader->TreeD() && cD) {
680 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
681 AliDebug(2,Form("Making Branch %s for digits",branchname));
686 //_____________________________________________________________________________
687 Int_t AliVZEROv4::GetCellId(Int_t *vol, Float_t *hits)
690 // Returns Id of scintillator cell
691 // Right side from 0 to 47
692 // Left side from 48 to 95
694 Int_t index = vol[1];
697 if (index < 10) index = index + 12;
700 index = (index - 10) + ( ( Int_t(hits[8]) - 1 ) * 12);
703 else if (hits[2] > 0.0)
705 index = (index + 38) + ( ( Int_t(hits[8]) - 1 ) * 12);