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Removing obsolete option
[u/mrichter/AliRoot.git] / VZERO / AliVZEROv3.cxx
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f9721da6 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
16/* $Id$ */
17
18//////////////////////////////////////////////////////////////////////
19// //
20// (V-zero) detector version 3 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 4th of december 2003 //
24// (now 3 rings instead of 5 rings as in previous versions -budget //
25// cuts !! - therefore changes in cell dimensions and offsets) //
26// previous ring 1 and ring 2 become now ring 1 //
27// previous ring 3 and ring 4 become now ring 2 //
28// previous ring 5 becomes now ring 3 - both for Left and Right //
29// V0R (now V0C) sits between Z values -89.4 and -84.9 cm //
30// V0L (now V0A) sits between Z values +350.0 and +352.0 cm //
31// New coordinate system has been implemented in october 2003 //
32// //
33//////////////////////////////////////////////////////////////////////
34
35// --- Standard libraries ---
36#include <Riostream.h>
37#include <stdlib.h>
38#include <string.h>
39
40// --- ROOT libraries ---
41#include <TClonesArray.h>
f9721da6 42#include <TGeometry.h>
43#include <TLorentzVector.h>
44#include <TMath.h>
45#include <TNode.h>
46#include <TObjectTable.h>
47#include <TTUBE.h>
48#include <TTUBS.h>
49#include <TVirtualMC.h>
50#include <TParticle.h>
51
52// --- AliRoot header files ---
f9721da6 53#include "AliConst.h"
254ef8f1 54#include "AliLog.h"
55#include "AliMC.h"
f9721da6 56#include "AliMagF.h"
254ef8f1 57#include "AliRun.h"
f9721da6 58#include "AliVZEROLoader.h"
59#include "AliVZEROdigit.h"
60#include "AliVZEROhit.h"
61#include "AliVZEROv3.h"
f9721da6 62
63ClassImp(AliVZEROv3)
64
65//_____________________________________________________________________________
0b2bea8b 66AliVZEROv3:: AliVZEROv3():AliVZERO(),
67 fCellId(0),
68 fTrackPosition(),
69 fTrackMomentum(),
70 fLightYield(93.75),
71 fLightAttenuation(0.05),
72 fnMeters(15.0),
73 fFibToPhot(0.3)
f9721da6 74{
75// Standard default constructor
76}
77
78//_____________________________________________________________________________
79AliVZEROv3::AliVZEROv3(const char *name, const char *title):
0b2bea8b 80 AliVZERO(name,title),
81 fCellId(0),
82 fTrackPosition(),
83 fTrackMomentum(),
84 fLightYield(93.75),
85 fLightAttenuation(0.05),
86 fnMeters(15.0),
87 fFibToPhot(0.3)
f9721da6 88{
89
90// Standard constructor for V-zero Detector version 2
91
254ef8f1 92 AliDebug(2,"Create VZERO object");
f9721da6 93
0b2bea8b 94// fLightYield = 93.75;
95// fLightAttenuation = 0.05;
96// fnMeters = 15.0;
97// fFibToPhot = 0.3;
f9721da6 98
99}
100
101//_____________________________________________________________________________
102void AliVZEROv3::CreateGeometry()
103{
104
105// Creates the GEANT geometry of the V-zero Detector version 3
106
254ef8f1 107 AliDebug(2,"Create VZERO Geometry");
f9721da6 108
109 Int_t *idtmed = fIdtmed->GetArray()-2999;
110
111 Int_t ndetR = 1;
112 Int_t ndetL = 1;
113
114 Int_t ncellsR = 1;
115 Int_t ncellsL = 1;
116
117 Int_t idrotm[999];
118
119 Float_t height1Right, height2Right, height3Right;
120 Float_t heightRight;
121 Float_t theta;
122
123 Float_t halfThickQua;
124
125 Float_t zdet;
126 Float_t r0Right, r3Right;
127 Float_t pi = TMath::Pi();
128
129 height1Right = 1.82 + 3.81; // height of cell 1, in cm
130 height2Right = 4.72 + 7.12; // height of cell 2, in cm
131 height3Right = 10.83; // height of cell 3, in cm
132
133 theta = pi/6.0/2.0; // half angular opening = 15 degrees
134
135 halfThickQua= fThickness1/2.0; // half thickness of elementary cell (inner ring)
136
137// distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
138// absorber nose sitting at 90 cm. Will use -zdet later...
139// size of V0R box (fThickness) is increased by 1 mm as compared to version v2
140
141 fThickness = fThickness + 0.1;
142 zdet = 90.0 - 0.6 - fThickness/2.0; // distance to vertex (along Z axis)
143 r0Right = 4.05; // closest distance to center of the beam pipe
144 heightRight = height1Right + height2Right + height3Right;
145 r3Right = r0Right + heightRight;
146
147// Creation of mother volume v0LE - left part - :
148// Entrance face at +350.0 cm (new coordinate system) ...
149
150 Float_t partube[3];
151
152 partube[0] = 4.3;
153 partube[1] = 45.0;
154 partube[2] = fThickness1/2.0;
155
156 gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
157
158// Creation of five rings - left part - :
159// Entrance face at +350.0 cm (new coordinate system) ...
160
161// Mother volume v0L0 in which will be set 5 scintillator cells
162
163 Float_t partubs[5];
164
165 Float_t r0Left = 4.3;
166 Float_t height1Left = 2.6 + 4.1; // previous ring 1 + ring 2
167 Float_t height2Left = 6.4 + 10.2; // previous ring 3 + ring 4
168 Float_t height3Left = 16.9;
169 Float_t heightLeft = height1Left + height2Left + height3Left;
170
171 Float_t r3Left = r0Left + heightLeft;
172
173 partubs[0] = r0Left;
174 partubs[1] = r3Left;
175 partubs[2] = fThickness1/2.0;
176 partubs[3] = 90.0-15.0;
177 partubs[4] = 120.0-15.0;
178
179 gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5); // air volume
180
181 Float_t r1Left = r0Left + height1Left;
182
183 partubs[0] = r0Left;
184 partubs[1] = r1Left;
185
186 gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5); // quartz volume
187 gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
188
189 Float_t r2Left = r1Left + height2Left;
190
191 partubs[0] = r1Left;
192 partubs[1] = r2Left;
193
194 gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5); // quartz volume
195 gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
196
197 partubs[0] = r2Left;
198 partubs[1] = r3Left;
199
200 gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5); // quartz volume
201 gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
202
203
204// Creation of mother volume v0RI - right part - :
205
206 partube[0] = r0Right - 0.2;
207 partube[1] = r3Right + 1.0;
208 partube[2] = fThickness/2.0;
209
210 gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
211
212// Creation of carbon lids (3.5 mm thick) to keep v0RI box shut...
213
214 Float_t lidThickness = 0.35;
215
216 partube[0] = r0Right;
217 partube[1] = r3Right;
218 partube[2] = +lidThickness/2.0;
219
220 gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
221 gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
222 gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
223
224// Creation of aluminum rings to maintain the v0RI pieces ...
225
226 partube[0] = r0Right - 0.2;
227 partube[1] = r0Right;
228 partube[2] = +fThickness/2.0;
229
230 gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
231 gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
232
233 partube[0] = r3Right;
234 partube[1] = r3Right + 1.0;
235 partube[2] = +fThickness/2.0;
236
237 gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
238 gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
239
240// Mother volume v0R0 in which will be set 3 scintillator cells
241
242 partubs[0] = r0Right;
243 partubs[1] = r3Right;
244 partubs[2] = fThickness/2.0;
245 partubs[3] = 90.0-15.0;
246 partubs[4] = 120.0-15.0;
247
248 gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5); // air volume
249
250// Elementary cell of ring 1 :
251// (cells of ring 1 will be shifted by 1.7 cm towards vertex to output fibers)
252
253 Float_t offsetFibers = 1.7;
254 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
255 Float_t r1Right = r0Right + height1Right;
256
257 partubs[0] = r0Right;
258 partubs[1] = r1Right;
259 partubs[2] = fThickness1/2.0;
260
261 gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5); // scintillator volume
262 gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
263
264// Elementary cell of ring 2 :
265
266 Float_t r2Right = r1Right + height2Right;
267
268 partubs[0] = r1Right;
269 partubs[1] = r2Right;
270
271 gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5); // scintillator volume
272 gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
273
274
275// Elementary cell of ring 3 :
276
277 partubs[0] = r2Right;
278 partubs[1] = r3Right;
279
280 gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5); // scintillator volume
281 gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
282
283
284 Float_t phiDeg = 180./6.;
285
286// Right part :
287
288 for(Float_t phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
289 {
290 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
291 gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
292 0.0,0.0,idrotm[902],"ONLY");
293 ndetR++;
294 }
295
296 gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
297
298 ncellsR = (ndetR - 1) * 3;
254ef8f1 299 AliInfo(Form("Number of cells on Right side = %d",ncellsR));
f9721da6 300
301// Left part :
302
303 for(Float_t phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
304 {
305 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
306 gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
307 0.0,0.0,idrotm[902],"ONLY");
308 ndetL++;
309 }
310
311 gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
312
313 ncellsL = (ndetL - 1) * 3;
254ef8f1 314 AliInfo(Form("Number of cells on Left side = %d", ncellsL));
f9721da6 315
316}
317
f9721da6 318//_____________________________________________________________________________
319void AliVZEROv3::CreateMaterials()
320{
321
322// Creates materials used for geometry
323
254ef8f1 324 AliDebug(2,"VZERO create materials");
f9721da6 325
326/*
327 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,
328 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
329
330
331 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,
332 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
333
334 Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
335 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
336 1.662295, 1.68337 };
337
338 Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
339 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
340
341 Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
342
343
344 Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
345
346
347 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,
348 1e-4,1e-4,1e-4,1e-4 };
349 Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
350
351*/
352
353 Int_t *idtmed = fIdtmed->GetArray()-2999;
354
f9721da6 355
356// Parameters related to Quarz (SiO2) :
357
358 Float_t aqua[2], zqua[2], densqua, wmatqua[2];
359 Int_t nlmatqua;
360
361 aqua[0] = 28.09;
362 aqua[1] = 16.;
363 zqua[0] = 14.;
364 zqua[1] = 8.;
365 densqua = 2.64;
366 nlmatqua = -2;
367 wmatqua[0] = 1.;
368 wmatqua[1] = 2.;
369
370// Parameters related to aluminum sheets :
371
372 Float_t aal = 26.98;
373 Float_t zal = 13.00;
374 Float_t densal= 2.7;
375 Float_t radlal= 8.9;
376
377// Parameters related to scintillator CH :
378
379 Float_t ascin[2] = {1.00794,12.011};
380 Float_t zscin[2] = {1.,6.};
381 Float_t wscin[2] = {1.,1.};
382 Float_t denscin = 1.032;
383
f7b3a79e 384// AIR
385
386 Float_t aAir[4]={12.,14.,16.,36.};
387 Float_t zAir[4]={6.,7.,8.,18.};
388 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
389 Float_t dAir = 1.20479E-3;
390
f9721da6 391// Definition of materials :
f7b3a79e 392
393// AIR
394
395 AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
396 AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
f9721da6 397 AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
398 AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
399 AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
400 AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
401
402 AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
403
404
405 Int_t iSXFLD = gAlice->Field()->Integ();
406 Float_t sXMGMX = gAlice->Field()->Max();
407
408 Float_t tmaxfd, stemax, deemax, epsil, stmin;
409
410 tmaxfd = 10.;
411 stemax = 0.1;
412 deemax = 0.1;
413 epsil = 0.001;
414 stmin = 0.001;
415
416// Active Air :
417 AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
418 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
419
420// Inactive air :
421
422 AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
423 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
424
425 AliMedium(2, "CARBON$ ", 2, 1, iSXFLD, sXMGMX,
426 tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
427
428 AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
429 tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
430
431 AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
432 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
433
434
435 AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
436 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
437
438 AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
439
440 gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
441 gMC->Gstpar(idtmed[3000], "HADR", 1.);
442 gMC->Gstpar(idtmed[3000], "DCAY", 1.);
443 gMC->Gstpar(idtmed[3000], "DRAY", 1.);
444
445 gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
446 gMC->Gstpar(idtmed[3001], "HADR", 1.);
447 gMC->Gstpar(idtmed[3001], "DCAY", 1.);
448 gMC->Gstpar(idtmed[3001], "DRAY", 1.);
449
450 gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
451 gMC->Gstpar(idtmed[3002], "HADR", 1.);
452 gMC->Gstpar(idtmed[3002], "DCAY", 1.);
453 gMC->Gstpar(idtmed[3002], "DRAY", 1.);
454 gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
455 gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
456
457 gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
458 gMC->Gstpar(idtmed[3003], "HADR", 1.);
459 gMC->Gstpar(idtmed[3003], "DCAY", 1.);
460 gMC->Gstpar(idtmed[3003], "DRAY", 1.);
461
462 gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
463 gMC->Gstpar(idtmed[3004], "HADR", 1.);
464 gMC->Gstpar(idtmed[3004], "DCAY", 1.);
465 gMC->Gstpar(idtmed[3004], "DRAY", 1.);
466 gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
467 gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
468
469 gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
470 gMC->Gstpar(idtmed[3005], "HADR", 1.);
471 gMC->Gstpar(idtmed[3005], "DCAY", 1.);
472 gMC->Gstpar(idtmed[3005], "DRAY", 1.);
473 gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
474 gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
475
476
477// geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
478// geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
479
480// gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
481// gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
482
483}
484
485//_____________________________________________________________________________
ba380e33 486void AliVZEROv3::DrawModule() const
f9721da6 487{
488
489// Drawing is done in DrawVZERO.C
490
254ef8f1 491 AliDebug(2,"VZERO DrawModule");
f9721da6 492
493}
494
495//_____________________________________________________________________________
496void AliVZEROv3::Init()
497{
498// Initialises version 2 of the VZERO Detector
499// Just prints an information message
500
254ef8f1 501 AliInfo(Form("VZERO version %d initialized",IsVersion()));
f9721da6 502
503// gMC->SetMaxStep(fMaxStepAlu);
504// gMC->SetMaxStep(fMaxStepQua);
505
506 AliVZERO::Init();
507
508}
509
510
511//_____________________________________________________________________________
512void AliVZEROv3::StepManager()
513{
514
515// Step Manager, called at each step
516
517 Int_t copy;
518 static Int_t vol[4];
519 static Float_t hits[21];
520 static Float_t eloss, tlength;
f9721da6 521 static Int_t nPhotonsInStep;
522 static Int_t nPhotons;
523 static Int_t numStep;
524 Float_t ringNumber;
525 Float_t destep, step;
526
527 numStep += 1;
528
529// We keep only charged tracks :
530
531 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
532
d6fb41ac 533 static Int_t idV0R1 = gMC->VolId("V0R1");
534 static Int_t idV0L1 = gMC->VolId("V0L1");
535 static Int_t idV0R2 = gMC->VolId("V0R2");
536 static Int_t idV0L2 = gMC->VolId("V0L2");
537 static Int_t idV0R3 = gMC->VolId("V0R3");
538 static Int_t idV0L3 = gMC->VolId("V0L3");
539
f9721da6 540 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
541 vol[2] = gMC->CurrentVolID(copy);
542 vol[3] = copy;
543
d6fb41ac 544 if ( gMC->CurrentVolID(copy) == idV0R1 ||
545 gMC->CurrentVolID(copy) == idV0L1 )
f9721da6 546 ringNumber = 1.0;
d6fb41ac 547 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
548 gMC->CurrentVolID(copy) == idV0L2 )
f9721da6 549 ringNumber = 2.0;
d6fb41ac 550 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
551 gMC->CurrentVolID(copy) == idV0L3 )
f9721da6 552 ringNumber = 3.0;
553 else
554 ringNumber = 0.0;
555
556 if ( ringNumber > 0.5 ) {
557
558 destep = gMC->Edep();
559 step = gMC->TrackStep();
560
561 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
562 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
563
564 eloss += destep;
565 tlength += step;
566
567 if ( gMC->IsTrackEntering() ) {
568
569 nPhotons = nPhotonsInStep;
570 gMC->TrackPosition(fTrackPosition);
571 gMC->TrackMomentum(fTrackMomentum);
572
573 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
574 fTrackMomentum.Py() * fTrackMomentum.Py() );
575
576 hits[0] = fTrackPosition.X();
577 hits[1] = fTrackPosition.Y();
578 hits[2] = fTrackPosition.Z();
579 hits[3] = Float_t (gMC->TrackPid());
580
581 hits[4] = gMC->TrackTime();
582 hits[5] = gMC->TrackCharge();
583 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
584 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
585 hits[8] = ringNumber;
586
587 hits[9] = pt;
588 hits[10] = fTrackMomentum.P();
589 hits[11] = fTrackMomentum.Px();
590 hits[12] = fTrackMomentum.Py();
591 hits[13] = fTrackMomentum.Pz();
592
593 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
594 hits[14] = par->Vx();
595 hits[15] = par->Vy();
596 hits[16] = par->Vz();
597
598 tlength = 0.0;
599 eloss = 0.0;
600
601 }
602
603 nPhotons = nPhotons + nPhotonsInStep;
604
605 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
606
607 nPhotons = nPhotons - Int_t( (Float_t(nPhotons) * fLightAttenuation * fnMeters) );
608 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot );
609
610 hits[17] = eloss;
611 hits[18] = tlength;
612 hits[19] = nPhotons;
613 hits[20] = GetCellId (vol, hits);
614
615 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
616
617 tlength = 0.0;
618 eloss = 0.0;
619 nPhotons = 0;
620 nPhotonsInStep = 0;
621
622 numStep = 0;
623 }
624 }
625
626}
627
628//_____________________________________________________________________________
629void AliVZEROv3::AddHit(Int_t track, Int_t *vol, Float_t *hits)
630{
631
632// Adds a VZERO hit
633
634 TClonesArray &lhits = *fHits;
635 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
636}
637
638//_____________________________________________________________________________
639void AliVZEROv3::AddDigits(Int_t *tracks, Int_t* digits)
640{
641
642// Adds a VZERO digit
643
644 TClonesArray &ldigits = *fDigits;
645 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
646}
647
648//_____________________________________________________________________________
649void AliVZEROv3::MakeBranch(Option_t *option)
650{
651
652// Creates new branches in the current Root Tree
653
654 char branchname[10];
655 sprintf(branchname,"%s",GetName());
254ef8f1 656 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
f9721da6 657
658 const char *cH = strstr(option,"H");
659
cb5b8b21 660 if (fHits && fLoader->TreeH() && cH) {
661 fLoader->TreeH()->Branch(branchname,&fHits, fBufferSize);
254ef8f1 662 AliDebug(2,Form("Making Branch %s for hits",branchname));
f9721da6 663 }
664
665 const char *cD = strstr(option,"D");
666
667 if (fDigits && fLoader->TreeD() && cD) {
668 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
254ef8f1 669 AliDebug(2,Form("Making Branch %s for digits",branchname));
f9721da6 670 }
671
672}
673
674//_____________________________________________________________________________
675Int_t AliVZEROv3::GetCellId(Int_t *vol, Float_t *hits)
676{
677
678 // Returns Id of scintillator cell
679 // Right side from 0 to 35
680 // Left side from 36 to 71
681
682 Int_t index = vol[1];
683 fCellId = 0;
684
685 if (index < 10) index = index + 12;
686
687 if (hits[2] < 0.0) {
688 index = (index - 10) + ( ( Int_t(hits[8]) - 1 ) * 12);
689 fCellId = index;
690 }
691 else if (hits[2] > 0.0)
692 {
693 index = (index + 26) + ( ( Int_t(hits[8]) - 1 ) * 12);
694 fCellId = index;}
695
696 return fCellId;
697}