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47d9b1cb 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/* $Id$ */
47d9b1cb 17
18//////////////////////////////////////////////////////////////////////
19// //
20// (V-zero) detector version 2 as designed by the Lyon group //
21// All comments should be sent to Brigitte CHEYNIS : //
22// b.cheynis@ipnl.in2p3.fr //
2f77b146 23// Geometry of the 26th of november 2003 //
47d9b1cb 24// (circular instead of trapezoidal shapes as in previous versions //
2f77b146 25// plus changes in cell dimensions and offsets) : //
26// Scintillating cells are now 2 cm thick instead of 0.7 cm //
27// V0R sits between Z values -89.4 and -85.0 cm //
28// V0L sits between Z values +350.0 and +352.0 cm //
29// New coordinate system has been implemented in october 2003 //
47d9b1cb 30// //
31//////////////////////////////////////////////////////////////////////
32
f359b593 33// --- Standard libraries ---
88cb7938 34#include <Riostream.h>
35#include <stdlib.h>
36#include <string.h>
37
f359b593 38// --- ROOT libraries ---
88cb7938 39#include <TClonesArray.h>
88cb7938 40#include <TGeometry.h>
88cb7938 41#include <TLorentzVector.h>
42#include <TMath.h>
43#include <TNode.h>
44#include <TObjectTable.h>
47d9b1cb 45#include <TTUBE.h>
88cb7938 46#include <TTUBS.h>
47#include <TVirtualMC.h>
48#include <TParticle.h>
47d9b1cb 49
f359b593 50// --- AliRoot header files ---
b2501ea3 51#include "AliRun.h"
52#include "AliMC.h"
9a5d59b6 53#include "AliConst.h"
254ef8f1 54#include "AliLog.h"
47d9b1cb 55#include "AliMagF.h"
f359b593 56#include "AliVZEROLoader.h"
47d9b1cb 57#include "AliVZEROdigit.h"
88cb7938 58#include "AliVZEROhit.h"
59#include "AliVZEROv2.h"
47d9b1cb 60
61ClassImp(AliVZEROv2)
62
b2501ea3 63//_____________________________________________________________________________
47d9b1cb 64AliVZEROv2:: AliVZEROv2():AliVZERO()
65{
f359b593 66// Standard default constructor
47d9b1cb 67}
b2501ea3 68
69//_____________________________________________________________________________
47d9b1cb 70AliVZEROv2::AliVZEROv2(const char *name, const char *title):
71 AliVZERO(name,title)
72{
73
f359b593 74// Standard constructor for V-zero Detector version 2
47d9b1cb 75
254ef8f1 76 AliDebug(2,"Create VZERO object");
47d9b1cb 77
78}
79
b2501ea3 80//_____________________________________________________________________________
47d9b1cb 81void AliVZEROv2::CreateGeometry()
82{
83
84// Creates the GEANT geometry of the V-zero Detector version 2
47d9b1cb 85
254ef8f1 86 AliDebug(2,"Create VZERO Geometry");
c288a388 87
47d9b1cb 88 Int_t *idtmed = fIdtmed->GetArray()-2999;
89
f359b593 90 Int_t ndetR = 1;
91 Int_t ndetL = 1;
47d9b1cb 92
f359b593 93 Int_t ncellsR = 1;
94 Int_t ncellsL = 1;
47d9b1cb 95
96 Int_t idrotm[999];
97
98 Float_t height1, height2, height3, height4, height5;
99 Float_t height;
100 Float_t theta;
101
f359b593 102 Float_t halfThickQua;
47d9b1cb 103
104 Float_t zdet;
105 Float_t r0, r5;
106 Float_t pi = TMath::Pi();
c288a388 107
b2501ea3 108 height1 = 1.82; // height of cell 1, in cm
109 height2 = 3.81; // height of cell 2, in cm
110 height3 = 4.72; // height of cell 3, in cm
111 height4 = 7.12; // height of cell 4, in cm
112 height5 = 10.83; // height of cell 5, in cm
47d9b1cb 113
b2501ea3 114 theta = pi/6.0/2.0; // half angular opening = 15 degrees
c288a388 115
b2501ea3 116 halfThickQua= fThickness1/2.0; // half thickness of elementary cell (inner ring)
2f77b146 117
118// distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
119// absorber nose sitting at 90 cm. Will use -zdet later...
120
121 zdet = 90.0 - 0.6 -fThickness/2.0; // distance to vertex (along Z axis)
b2501ea3 122 r0 = 4.05; // closest distance to center of the beam pipe
123 height = height1 + height2 + height3 + height4 + height5;
124 r5 = r0 + height;
47d9b1cb 125
f359b593 126// Creation of mother volume v0LE - left part - :
9a5d59b6 127// Entrance face at +350.0 cm (new coordinate system) ...
47d9b1cb 128
129 Float_t partube[3];
130
131 partube[0] = 4.3;
132 partube[1] = 45.0;
133 partube[2] = fThickness1/2.0;
134
135 gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
c288a388 136
47d9b1cb 137// Creation of five rings - left part - :
9a5d59b6 138// Entrance face at +350.0 cm (new coordinate system) ...
47d9b1cb 139
f359b593 140// Mother volume v0L0 in which will be set 5 scintillator cells
47d9b1cb 141
47d9b1cb 142 Float_t partubs[5];
143
f359b593 144 Float_t r0Left = 4.3;
145 Float_t height1Left = 2.6;
146 Float_t height2Left = 4.1;
147 Float_t height3Left = 6.4;
148 Float_t height4Left = 10.2;
149 Float_t height5Left = 16.9;
150 Float_t heightLeft = height1Left + height2Left + height3Left
151 + height4Left + height5Left;
152 Float_t r5Left = r0Left + heightLeft;
153
154 partubs[0] = r0Left;
155 partubs[1] = r5Left;
47d9b1cb 156 partubs[2] = fThickness1/2.0;
157 partubs[3] = 90.0-15.0;
158 partubs[4] = 120.0-15.0;
159
160 gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5); // air volume
161
f359b593 162 Float_t r1Left = r0Left + height1Left;
47d9b1cb 163
f359b593 164 partubs[0] = r0Left;
165 partubs[1] = r1Left;
47d9b1cb 166
167 gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5); // quartz volume
168 gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
169
f359b593 170 Float_t r2Left = r1Left + height2Left;
47d9b1cb 171
f359b593 172 partubs[0] = r1Left;
173 partubs[1] = r2Left;
47d9b1cb 174
175 gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5); // quartz volume
176 gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
177
f359b593 178 Float_t r3Left = r2Left + height3Left;
47d9b1cb 179
f359b593 180 partubs[0] = r2Left;
181 partubs[1] = r3Left;
47d9b1cb 182
183 gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5); // quartz volume
184 gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
185
f359b593 186 Float_t r4Left = r3Left + height4Left;
47d9b1cb 187
f359b593 188 partubs[0] = r3Left;
189 partubs[1] = r4Left;
47d9b1cb 190
47d9b1cb 191 gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5); // quartz volume
192 gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
193
f359b593 194 partubs[0] = r4Left;
195 partubs[1] = r5Left;
47d9b1cb 196 partubs[3] = 90.0-15.0;
197 partubs[4] = 120.0-30.0;
198
47d9b1cb 199 gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5); // quartz volume
200 gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
201
47d9b1cb 202 partubs[3] = 120.0-30.0;
203 partubs[4] = 120.0-15.0;
204
47d9b1cb 205 gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5); // quartz volume
206 gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
207
208
f359b593 209// Creation of mother volume v0RI - right part - :
47d9b1cb 210
211 partube[0] = r0 - 0.2;
212 partube[1] = r5 + 1.0;
213 partube[2] = fThickness/2.0;
c288a388 214
47d9b1cb 215 gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
216
2f77b146 217// Creation of carbon lids (2 mm thick) to keep v0RI box shut...
218
219 Float_t lidThickness = 0.2;
47d9b1cb 220
221 partube[0] = r0;
222 partube[1] = r5;
2f77b146 223 partube[2] = +lidThickness/2.0;
c288a388 224
47d9b1cb 225 gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
226 gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
227 gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
228
f359b593 229// Creation of aluminum rings to maintain the v0RI pieces ...
47d9b1cb 230
231 partube[0] = r0 - 0.2;
232 partube[1] = r0;
233 partube[2] = +fThickness/2.0;
c288a388 234
47d9b1cb 235 gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
236 gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
237
238 partube[0] = r5;
239 partube[1] = r5 + 1.0;
240 partube[2] = +fThickness/2.0;
241
47d9b1cb 242 gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
243 gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
244
f359b593 245// Mother volume v0R0 in which will be set 5 scintillator cells
47d9b1cb 246
247 partubs[0] = r0;
248 partubs[1] = r5;
249 partubs[2] = fThickness/2.0;
250 partubs[3] = 90.0-15.0;
251 partubs[4] = 120.0-15.0;
252
c288a388 253 gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5); // air volume
47d9b1cb 254
255// Elementary cell of ring 1 :
2f77b146 256// (cells 2 and 3 will be shifted by 1 cm to output fibers)
47d9b1cb 257
2f77b146 258 Float_t offsetFibers = 1.0;
259 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
47d9b1cb 260 Float_t r1 = r0 + height1;
261
262 partubs[0] = r0;
263 partubs[1] = r1;
264 partubs[2] = fThickness1/2.0;
265
266 gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5); // scintillator volume
9a5d59b6 267 gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
47d9b1cb 268
269// Elementary cell of ring 2 :
270
271 Float_t r2 = r1 + height2;
272
273 partubs[0] = r1;
274 partubs[1] = r2;
275
276 gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5); // scintillator volume
f359b593 277 gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
47d9b1cb 278
279
280// Elementary cell of ring 3 :
281
282 Float_t r3 = r2 + height3;
283
284 partubs[0] = r2;
285 partubs[1] = r3;
286
287 gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5); // scintillator volume
f359b593 288 gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
47d9b1cb 289
290// Elementary cell of ring 4 :
291
292 Float_t r4 = r3 + height4 ;
293
294 partubs[0] = r3;
295 partubs[1] = r4;
296
297 gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5); // scintillator volume
2f77b146 298 gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
47d9b1cb 299
300// Elementary cells of ring 5 :
301
302 partubs[0] = r4;
303 partubs[1] = r5;
304 partubs[3] = 90.0-15.0;
305 partubs[4] = 120.0-30.0;
306
47d9b1cb 307 gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5); // scintillator volume
2f77b146 308 gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
47d9b1cb 309
310 partubs[3] = 120.0-30.0;
311 partubs[4] = 120.0-15.0;
312
47d9b1cb 313 gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5); // scintillator volume
2f77b146 314 gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
c288a388 315
f359b593 316 Float_t phiDeg = 180./6.;
47d9b1cb 317
318// Right part :
319
f359b593 320 for(Float_t phi = 15.0; phi < 360.0; phi = phi + phiDeg)
47d9b1cb 321 {
322 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
f359b593 323 gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
c288a388 324 0.0,0.0,idrotm[902],"ONLY");
f359b593 325 ndetR++;
47d9b1cb 326 }
327
9a5d59b6 328 gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
47d9b1cb 329
f359b593 330 ncellsR = (ndetR - 1) * 6;
254ef8f1 331 AliInfo(Form("Number of cells on Right side = %d", ncellsR));
47d9b1cb 332
333// Left part :
334
f359b593 335 for(Float_t phi = 15.0; phi < 360.0; phi = phi + phiDeg)
47d9b1cb 336 {
337 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
f359b593 338 gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
47d9b1cb 339 0.0,0.0,idrotm[902],"ONLY");
f359b593 340 ndetL++;
47d9b1cb 341 }
342
9a5d59b6 343 gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
47d9b1cb 344
f359b593 345 ncellsL = (ndetL - 1) * 6;
254ef8f1 346 AliInfo(Form("Number of cells on Left side = %d", ncellsL));
c288a388 347
7dd2cbe4 348}
47d9b1cb 349
b2501ea3 350//_____________________________________________________________________________
47d9b1cb 351void AliVZEROv2::CreateMaterials()
352{
f359b593 353
354// Creates materials used for geometry
355
254ef8f1 356 AliDebug(2,"VZERO create materials");
47d9b1cb 357
358/*
359 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,
360 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
361
362
363 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,
364 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
365
366 Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
367 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
368 1.662295, 1.68337 };
369
370 Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
371 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
372
373 Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
374
375
376 Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
377
378
379 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,
380 1e-4,1e-4,1e-4,1e-4 };
381 Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
382
383*/
384
385 Int_t *idtmed = fIdtmed->GetArray()-2999;
386
47d9b1cb 387
388// Parameters related to Quarz (SiO2) :
389
390 Float_t aqua[2], zqua[2], densqua, wmatqua[2];
391 Int_t nlmatqua;
392
393 aqua[0] = 28.09;
394 aqua[1] = 16.;
395 zqua[0] = 14.;
396 zqua[1] = 8.;
397 densqua = 2.64;
398 nlmatqua = -2;
399 wmatqua[0] = 1.;
400 wmatqua[1] = 2.;
401
402// Parameters related to aluminum sheets :
403
404 Float_t aal = 26.98;
405 Float_t zal = 13.00;
406 Float_t densal= 2.7;
407 Float_t radlal= 8.9;
408
409// Parameters related to scintillator CH :
410
411 Float_t ascin[2] = {1.00794,12.011};
412 Float_t zscin[2] = {1.,6.};
413 Float_t wscin[2] = {1.,1.};
414 Float_t denscin = 1.032;
25252ad5 415
416// AIR
417
418 Float_t aAir[4]={12.,14.,16.,36.};
419 Float_t zAir[4]={6.,7.,8.,18.};
420 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
421 Float_t dAir = 1.20479E-3;
422
47d9b1cb 423// Definition of materials :
424
25252ad5 425 AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
426 AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
47d9b1cb 427 AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
428 AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
429 AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
430 AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
431
432 AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
433
434
f359b593 435 Int_t iSXFLD = gAlice->Field()->Integ();
436 Float_t sXMGMX = gAlice->Field()->Max();
47d9b1cb 437
438 Float_t tmaxfd, stemax, deemax, epsil, stmin;
439
440 tmaxfd = 10.;
441 stemax = 0.1;
442 deemax = 0.1;
443 epsil = 0.001;
444 stmin = 0.001;
445
446// Active Air :
f359b593 447 AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
47d9b1cb 448 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
449
450// Inactive air :
451
f359b593 452 AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
47d9b1cb 453 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
454
f359b593 455 AliMedium(2, "CARBON$ ", 2, 1, iSXFLD, sXMGMX,
47d9b1cb 456 tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
457
f359b593 458 AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
47d9b1cb 459 tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
460
f359b593 461 AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
47d9b1cb 462 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
463
464
f359b593 465 AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
47d9b1cb 466 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
467
f359b593 468 AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
47d9b1cb 469
470 gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
471 gMC->Gstpar(idtmed[3000], "HADR", 1.);
472 gMC->Gstpar(idtmed[3000], "DCAY", 1.);
473 gMC->Gstpar(idtmed[3000], "DRAY", 1.);
474
475 gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
476 gMC->Gstpar(idtmed[3001], "HADR", 1.);
477 gMC->Gstpar(idtmed[3001], "DCAY", 1.);
478 gMC->Gstpar(idtmed[3001], "DRAY", 1.);
479
480 gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
481 gMC->Gstpar(idtmed[3002], "HADR", 1.);
482 gMC->Gstpar(idtmed[3002], "DCAY", 1.);
483 gMC->Gstpar(idtmed[3002], "DRAY", 1.);
484 gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
485 gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
486
487 gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
488 gMC->Gstpar(idtmed[3003], "HADR", 1.);
489 gMC->Gstpar(idtmed[3003], "DCAY", 1.);
490 gMC->Gstpar(idtmed[3003], "DRAY", 1.);
491
492 gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
493 gMC->Gstpar(idtmed[3004], "HADR", 1.);
494 gMC->Gstpar(idtmed[3004], "DCAY", 1.);
495 gMC->Gstpar(idtmed[3004], "DRAY", 1.);
496 gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
497 gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
498
499 gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
500 gMC->Gstpar(idtmed[3005], "HADR", 1.);
501 gMC->Gstpar(idtmed[3005], "DCAY", 1.);
502 gMC->Gstpar(idtmed[3005], "DRAY", 1.);
503 gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
504 gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
505
506
507// geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
508// geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
509
510// gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
511// gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
b2501ea3 512
47d9b1cb 513}
b2501ea3 514
515//_____________________________________________________________________________
ba380e33 516void AliVZEROv2::DrawModule() const
47d9b1cb 517{
518
519// Drawing is done in DrawVZERO.C
520
254ef8f1 521 AliDebug(2,"VZERO DrawModule");
47d9b1cb 522
523}
524
b2501ea3 525//_____________________________________________________________________________
47d9b1cb 526void AliVZEROv2::Init()
527{
b2501ea3 528// Initialises version 2 of the VZERO Detector
47d9b1cb 529// Just prints an information message
530
254ef8f1 531 AliInfo(Form("VZERO version %d initialized",IsVersion()));
47d9b1cb 532
533// gMC->SetMaxStep(fMaxStepAlu);
534// gMC->SetMaxStep(fMaxStepQua);
535
536 AliVZERO::Init();
537
538}
539
47d9b1cb 540
b2501ea3 541//_____________________________________________________________________________
47d9b1cb 542void AliVZEROv2::StepManager()
543{
f359b593 544
545// Step Manager, called at each step
47d9b1cb 546
547 Int_t copy;
548 static Int_t vol[4];
c288a388 549 static Float_t hits[19];
47d9b1cb 550 static Float_t eloss, tlength;
551
552 TLorentzVector pos;
553 TLorentzVector mom;
554
555 Float_t theta;
556 Float_t phi;
f359b593 557 Float_t ringNumber;
47d9b1cb 558
559 Int_t ipart;
560 Float_t destep, step;
561
562
563// We keep only charged tracks :
564
565 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
566
567
568 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
569 vol[2] = gMC->CurrentVolID(copy);
570 vol[3] = copy;
571
d6fb41ac 572 static Int_t idV0R1 = gMC->VolId("V0R1");
573 static Int_t idV0L1 = gMC->VolId("V0L1");
574 static Int_t idV0R2 = gMC->VolId("V0R2");
575 static Int_t idV0L2 = gMC->VolId("V0L2");
576 static Int_t idV0R3 = gMC->VolId("V0R3");
577 static Int_t idV0L3 = gMC->VolId("V0L3");
578 static Int_t idV0R4 = gMC->VolId("V0R4");
579 static Int_t idV0L4 = gMC->VolId("V0L4");
580 static Int_t idV0R5 = gMC->VolId("V0R5");
581 static Int_t idV0L5 = gMC->VolId("V0L5");
582 static Int_t idV0R6 = gMC->VolId("V0R6");
583 static Int_t idV0L6 = gMC->VolId("V0L6");
584
585 if ( gMC->CurrentVolID(copy) == idV0R1 ||
586 gMC->CurrentVolID(copy) == idV0L1 )
f359b593 587 ringNumber = 1.0;
d6fb41ac 588 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
589 gMC->CurrentVolID(copy) == idV0L2 )
f359b593 590 ringNumber = 2.0;
d6fb41ac 591 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
592 gMC->CurrentVolID(copy) == idV0L3 )
f359b593 593 ringNumber = 3.0;
d6fb41ac 594 else if ( gMC->CurrentVolID(copy) == idV0R4 ||
595 gMC->CurrentVolID(copy) == idV0L4 )
f359b593 596 ringNumber = 4.0;
d6fb41ac 597 else if ( gMC->CurrentVolID(copy) == idV0R5 ||
598 gMC->CurrentVolID(copy) == idV0L5 ||
599 gMC->CurrentVolID(copy) == idV0R6 ||
600 gMC->CurrentVolID(copy) == idV0L6 )
f359b593 601 ringNumber = 5.0;
47d9b1cb 602 else
f359b593 603 ringNumber = 0.0;
47d9b1cb 604
f359b593 605 if ( ringNumber > 0.5 ) {
47d9b1cb 606
607 destep = gMC->Edep();
608 step = gMC->TrackStep();
609 eloss += destep;
610 tlength += step;
25252ad5 611
47d9b1cb 612 if ( gMC->IsTrackEntering() ) {
613
614 gMC->TrackPosition(pos);
615
616 gMC->TrackMomentum(mom);
617 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
f359b593 618 Double_t pt = TMath::Sqrt(tc);
619 Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
620 theta = Float_t(TMath::ATan2(pt,Double_t(mom[2])))*kRaddeg;
25252ad5 621 phi = Float_t(TMath::ATan2(Double_t(pos[1]),Double_t(pos[0])))*kRaddeg;
622
623////////////////////////////////////////////////////////////////////////////
624 Float_t angle1 = Float_t(TMath::ATan2(Double_t(pos[1]),Double_t(pos[0])))*kRaddeg;
625 if(angle1 < 0.0) angle1 = angle1 + 360.0;
254ef8f1 626 //PH AliDebug(2,Form("RingNumber, copy, phi1 = %f %d %f \n", ringNumber,vol[1],angle1));
25252ad5 627////////////////////////////////////////////////////////////////////////////
628
47d9b1cb 629
630 ipart = gMC->TrackPid();
631
632 hits[0] = pos[0];
633 hits[1] = pos[1];
634 hits[2] = pos[2];
c288a388 635 hits[3] = Float_t (ipart);
47d9b1cb 636
637 hits[4] = gMC->TrackTime();
638 hits[5] = gMC->TrackCharge();
639 hits[6] = theta;
640 hits[7] = phi;
f359b593 641 hits[8] = ringNumber;
47d9b1cb 642
f359b593 643 hits[9] = pt;
644 hits[10] = pmom;
47d9b1cb 645 hits[11] = mom[0];
646 hits[12] = mom[1];
647 hits[13] = mom[2];
c288a388 648
5d12ce38 649 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
c288a388 650 hits[14] = par->Vx();
651 hits[15] = par->Vy();
652 hits[16] = par->Vz();
653
47d9b1cb 654 tlength = 0.0;
655 eloss = 0.0;
656
657 }
658
659 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
660
c288a388 661 hits[17] = eloss;
662 hits[18] = tlength;
47d9b1cb 663
5d12ce38 664 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
c288a388 665
47d9b1cb 666 tlength = 0.0;
667 eloss = 0.0;
47d9b1cb 668
669 }
670 }
671
672}
673
674//_____________________________________________________________________________
675void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
676{
677
f359b593 678// Adds a VZERO hit
47d9b1cb 679
47d9b1cb 680 TClonesArray &lhits = *fHits;
681 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
682}
683
b2501ea3 684//_____________________________________________________________________________
47d9b1cb 685void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits)
686{
687
f359b593 688// Adds a VZERO digit
689
47d9b1cb 690 TClonesArray &ldigits = *fDigits;
691 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
692}
693
b2501ea3 694//_____________________________________________________________________________
47d9b1cb 695void AliVZEROv2::MakeBranch(Option_t *option)
696{
697
f359b593 698// Creates new branches in the current Root Tree
699
47d9b1cb 700 char branchname[10];
701 sprintf(branchname,"%s",GetName());
254ef8f1 702 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
47d9b1cb 703
f359b593 704 const char *cH = strstr(option,"H");
47d9b1cb 705
cb5b8b21 706 if (fHits && fLoader->TreeH() && cH) {
707 fLoader->TreeH()->Branch(branchname,&fHits, fBufferSize);
254ef8f1 708 AliDebug(2,Form("Making Branch %s for hits",branchname));
47d9b1cb 709 }
710
f359b593 711 const char *cD = strstr(option,"D");
b2501ea3 712
f359b593 713 if (fDigits && fLoader->TreeD() && cD) {
88cb7938 714 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
254ef8f1 715 AliDebug(2,Form("Making Branch %s for digits",branchname));
47d9b1cb 716 }
717
718}