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Data calibration class
[u/mrichter/AliRoot.git] / VZERO / AliVZEROv6.cxx
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c985a636 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 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 //
27// //
28//////////////////////////////////////////////////////////////////////
29
30// --- Standard libraries ---
31#include <Riostream.h>
32#include <stdlib.h>
33#include <string.h>
34
35// --- ROOT libraries ---
36#include <TClonesArray.h>
37#include <TGeometry.h>
38#include <TLorentzVector.h>
39#include <TMath.h>
40#include <TNode.h>
41#include <TObjectTable.h>
42#include <TVirtualMC.h>
43#include <TParticle.h>
44
45#include <TGeoManager.h>
46#include <TGeoMaterial.h>
47#include <TGeoMedium.h>
48#include <TGeoNode.h>
49#include <TGeoVolume.h>
50#include "TGeoTube.h"
51#include "TGeoMatrix.h"
52
53// --- AliRoot header files ---
54#include "AliRun.h"
55#include "AliMC.h"
56#include "AliConst.h"
57#include "AliMagF.h"
58#include "AliVZEROLoader.h"
59#include "AliVZEROdigit.h"
60#include "AliVZEROhit.h"
61#include "AliVZEROv6.h"
62#include "AliLog.h"
63
64ClassImp(AliVZEROv6)
65
66//_____________________________________________________________________________
67AliVZEROv6:: AliVZEROv6():AliVZERO()
68{
69// Standard default constructor
70}
71
72//_____________________________________________________________________________
73AliVZEROv6::AliVZEROv6(const char *name, const char *title):
74 AliVZERO(name,title)
75{
76
77// Standard constructor for V-zero Detector version 6
78
79 AliDebug(2,"Create VZERO object ");
80
81 fVersion = 6; // version number
82
83// Parameters related to geometry :
84// V0 part in front of muon arm absorber
85
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
90 fV0CRMin = 4.6;
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
96
97// V0 part on the other side with respect to Interaction Point
98
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
103 fV0ARMin = 4.30;
104 fV0ACellThickness = 2.00; // thickness of elementary cell
105
106// Parameters related to light output :
107
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
112}
113
114//_____________________________________________________________________________
115
116void AliVZEROv6::BuildGeometry()
117{
118
119}
120
121//_____________________________________________________________________________
122void AliVZEROv6::CreateGeometry()
123{
124
125// Constructs TGeo geometry
126
127 const int kColorVZERO = kGreen;
128
129 AliDebug(2,"VZERO ConstructGeometry");
130
131 TGeoManager *geoManager = gGeoManager;
54aa7396 132// TGeoMedium *medAir = gGeoManager->GetMedium("VZERO_Air");
c985a636 133 TGeoMedium *medAlu = gGeoManager->GetMedium("VZERO_Aluminum");
134 TGeoMedium *medCar = gGeoManager->GetMedium("VZERO_Carbon");
135 TGeoMedium *medSci = gGeoManager->GetMedium("VZERO_Scintillator");
136
137 TGeoVolume *top = gGeoManager->GetVolume("ALIC");
138
c985a636 139 Float_t heightRight, r4Right;
140
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
c985a636 144
54aa7396 145// Creation of assembly V0RI - right part - :
c985a636 146
54aa7396 147 TGeoVolume *v0RI = new TGeoVolumeAssembly("V0RI");
c985a636 148 TGeoTranslation *tr1 = new TGeoTranslation(0.,0.,-zdet);
149 top->AddNode(v0RI,1,tr1);
c985a636 150
151// Creation of carbon lids (3.0 mm thick) to keep V0C box shut :
54aa7396 152
153 Float_t partube[3];
c985a636 154
155 partube[0] = fV0CRMin;
156 partube[1] = fV0CRBox;
157 partube[2] = fV0CLidThickness/2.0;
158
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);
166
167// Creation of aluminum rings 3.0 mm thick to maintain the v0RI pieces :
168
169 partube[0] = fV0CRMin - 0.3;
170 partube[1] = fV0CRMin;
171 partube[2] = fV0CBoxThickness/2.0;
172
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);
177
178 partube[0] = fV0CRBox;
179 partube[1] = fV0CRBox + 0.3;
180 partube[2] = fV0CBoxThickness/2.0;
181
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);
186
54aa7396 187// Creation of assembly V0R0 of scintillator cells within one sector
c985a636 188
54aa7396 189 TGeoVolume *v0R0 = new TGeoVolumeAssembly("V0R0");
c985a636 190
191// Elementary cell of ring 1 - right part - :
192// (cells of ring 1 will be shifted by 2.0 cm backwards to output fibers)
193
194 Float_t r1Right = fV0CRMin + fV0CHeight1;
54aa7396 195 Float_t offset = fV0CBoxThickness/2.0 - fV0CLidThickness - fV0CCellThickness/2.0;
196
197 Float_t partubs[5];
198
c985a636 199 partubs[0] = fV0CRMin;
200 partubs[1] = r1Right;
201 partubs[2] = fV0CCellThickness/2.0;
54aa7396 202 partubs[3] = 90.0-22.5;
203 partubs[4] = 135.0-22.5;
204
c985a636 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);
211
212// Elementary cell of ring 2 - right part - :
213// (cells of ring 2 will be shifted by 1.0 cm backwards to output fibers)
214
215 Float_t r2Right = r1Right + fV0CHeight2;
216
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);
225
226// Ring 3 - right part - :
227
228// Float_t x = TMath::ATan(1.0/156.0) * ((180./TMath::Pi()));
229
230 r2Right = r2Right + 0.2;
231 Float_t r3Right = r2Right + fV0CHeight3;
54aa7396 232// printf(" r2 = %f, r3 = %f \n\n", r2Right,r3Right);
c985a636 233
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;
238
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);
245
246 partubs[3] = 112.5-22.5;
247 partubs[4] = 135.0-22.5;
248
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);
254
255// Ring 4 - right part - :
256
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 !!
259
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;
264
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);
271
272 partubs[3] = 112.5-22.5+x;
273 partubs[4] = 135.0-22.5-x;
274
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);
280
281 Float_t phi;
282 Float_t phiDeg= 180./4.;
283
284 Int_t nsecR = 1; // number of sectors in right part of V0
285 Int_t ncellsR; // number of scintillating cells
286
287 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
288
289 {
290 TGeoRotation *rot1 = new TGeoRotation("rot1", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
291
292 v0RI->AddNode(v0R0,nsecR,rot1);
293 nsecR++;
294 }
295
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));
298
54aa7396 299// Creation of assembly v0LE - left part - :
c985a636 300// Entrance face at +339.0 cm (new coordinate system) ...
301
302 Float_t heightLeft = fV0AHeight1 + fV0AHeight2 + fV0AHeight3 + fV0AHeight4;
303 Float_t r4Left = fV0ARMin + heightLeft;
54aa7396 304
305 TGeoVolume *v0LE = new TGeoVolumeAssembly("V0LE");
306
c985a636 307 TGeoTranslation *tr8 = new TGeoTranslation(0.,0.,339.0 + fV0ACellThickness/2.0);
308 top->AddNode(v0LE,1,tr8);
54aa7396 309
310// Creation of assembly V0L0 of scintillator cells within one sector
311
312 TGeoVolume *v0L0 = new TGeoVolumeAssembly("V0L0");
c985a636 313
314 Float_t offsetLeft;
315 offsetLeft = - fV0ACellThickness/2.0;
316
317 Float_t r1Left = fV0ARMin + fV0AHeight1;
318
319 partubs[0] = fV0ARMin;
320 partubs[1] = r1Left;
54aa7396 321 partubs[2] = fV0ACellThickness/2.0;
322 partubs[3] = 90.0-22.5;
323 partubs[4] = 135.0-22.5;
324
c985a636 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);
331
332 Float_t r2Left = r1Left + fV0AHeight2;
333
334 partubs[0] = r1Left;
335 partubs[1] = r2Left;
336
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);
343
344 Float_t r3Left = r2Left + fV0AHeight3;
345
346 partubs[0] = r2Left;
347 partubs[1] = r3Left;
348
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);
355
356 partubs[0] = r3Left;
357 partubs[1] = r4Left;
358
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);
365
366 Int_t nsecL = 1; // number of sectors in left part of V0
367 Int_t ncellsL; // number of scintillating cells
368
369 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
370
371 {
372 TGeoRotation *rot1 = new TGeoRotation("rot1", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
373 v0LE->AddNode(v0L0,nsecL,rot1);
374 nsecL++;
375 }
376
377 ncellsL = (nsecL - 1) * 4; // 4 cells per sector
378 AliInfo(Form("Number of cells on Left side - V0A = %d\n", ncellsL));
379
380 gGeoManager->CloseGeometry();
381// gGeoManager-> SetVisLevel(4);
382 geoManager->Export("VZEROGeometry.root");
383}
384
385//_____________________________________________________________________________
386void AliVZEROv6::CreateMaterials()
387{
388
389// Creates materials used for geometry
390
391 AliDebug(2,"Create materials");
392
393// Int_t *idtmed = fIdtmed->GetArray()-2999;
394
395 Int_t fieldType = gAlice->Field()->Integ(); // Field type
54aa7396 396 Double_t maxField = gAlice->Field()->Max(); // Field max.
c985a636 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
402 Int_t id;
403 Double_t a, z, density, radLength, absLength;
404 Float_t tmaxfd, stemax, deemax, epsil, stmin;
405
406 a = 0.0; z = 0.0;
54aa7396 407 density = 0.0;
408 radLength = 0.0;
409 absLength = 999.0;
410 tmaxfd = 10.;
411 stemax = 0.1;
412 deemax = 0.1;
413 epsil = 0.001;
414 stmin = 0.001;
c985a636 415
416// Parameters for Air (= 0.01% C + 75% N + 23% O + 1% Ar )
417
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;
422 maxBending = 1;
423 maxStepSize = .001;
424 precision = .001;
425 minStepSize = .001;
426 id = 1;
427 AliMixture(id, "Air", aa, za, density, 4, wa);
428 AliMedium(id, "Air", id, 1, fieldType, maxField, maxBending,
429 maxStepSize, maxEnergyLoss, precision, minStepSize);
430
431// Parameters for Aluminum
432
433 a = 26.98;
434 z = 13.00;
435 density = 2.7;
436 radLength = 8.9;
437 maxBending = 10;
438 maxStepSize = .01;
439 precision = .003;
440 minStepSize = .003;
441 id = 2;
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);
445
446// Parameters for Carbon
447
448 a = 12.01;
449 z = 6.00;
450 density = 2.265;
451 radLength = 18.8;
452 id = 3;
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);
456
457// Parameters for scintillator
458
459 Float_t as[] = { 1.00794, 12.011};
460 Float_t zs[] = { 1., 6.};
461 Float_t ws[] = { 1., 1.};
462 density = 1.032;
463 maxBending = 10;
464 maxStepSize = .01;
465 precision = .003;
466 minStepSize = .003;
467 id = 4;
468 AliMixture(id, "Scintillator", as, zs, density, -2, ws);
469 AliMedium(id, "Scintillator", id, 1, fieldType, maxField, maxBending,
470 maxStepSize,maxEnergyLoss,precision,minStepSize);
471
472
473}
474
475//_____________________________________________________________________________
476void AliVZEROv6::DrawModule() const
477{
478
479// Drawing is done in DrawVZERO.C
480
481 AliDebug(2,"DrawModule");
482}
483
484
485//_____________________________________________________________________________
486void AliVZEROv6::DrawGeometry()
487{
488
489// Drawing of V0 geometry done in DrawV0.C
490
491 AliDebug(2,"DrawGeometry");
492
493// Here is DrawV0.C :
494
495// void DrawV0()
496// {
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);
508// top->Draw();
509// }
510
511}
512
513//_____________________________________________________________________________
514void AliVZEROv6::Init()
515{
516// Initialises version of the VZERO Detector given in Config
517// Just prints an information message
518
519 AliInfo(Form("VZERO version %d initialized \n",IsVersion()));
520
521 AliVZERO::Init();
522}
523
524//_____________________________________________________________________________
525void AliVZEROv6::StepManager()
526{
527
528// Step Manager, called at each step
529
530 Int_t copy;
531 static Int_t vol[4];
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;
537 Float_t ringNumber;
538 Float_t destep, step;
539
540 numStep += 1;
541
542// We keep only charged tracks :
543
544 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
545
546 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
547 vol[2] = gMC->CurrentVolID(copy);
548 vol[3] = copy;
549
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");
560
561 if ( gMC->CurrentVolID(copy) == idV0R1 ||
562 gMC->CurrentVolID(copy) == idV0L1 )
563 ringNumber = 1.0;
564 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
565 gMC->CurrentVolID(copy) == idV0L2 )
566 ringNumber = 2.0;
567 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
568 gMC->CurrentVolID(copy) == idV0R4 ||
569 gMC->CurrentVolID(copy) == idV0L3 )
570 ringNumber = 3.0;
571 else if ( gMC->CurrentVolID(copy) == idV0R5 ||
572 gMC->CurrentVolID(copy) == idV0R6 ||
573 gMC->CurrentVolID(copy) == idV0L4 )
574 ringNumber = 4.0;
575 else
576 ringNumber = 0.0;
577
578
579 if ( ringNumber > 0.5 ) {
580
581 destep = gMC->Edep();
582 step = gMC->TrackStep();
583
584 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
585 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
586
587 eloss += destep;
588 tlength += step;
589
590 if ( gMC->IsTrackEntering() ) {
591
592 nPhotons = nPhotonsInStep;
593 gMC->TrackPosition(fTrackPosition);
594 gMC->TrackMomentum(fTrackMomentum);
595
596 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
597 fTrackMomentum.Py() * fTrackMomentum.Py() );
598
599 hits[0] = fTrackPosition.X();
600 hits[1] = fTrackPosition.Y();
601 hits[2] = fTrackPosition.Z();
602 hits[3] = Float_t (gMC->TrackPid());
603
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;
609
610 hits[9] = pt;
611 hits[10] = fTrackMomentum.P();
612 hits[11] = fTrackMomentum.Px();
613 hits[12] = fTrackMomentum.Py();
614 hits[13] = fTrackMomentum.Pz();
615
616 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
617 hits[14] = par->Vx();
618 hits[15] = par->Vy();
619 hits[16] = par->Vz();
620
621 tlength = 0.0;
622 eloss = 0.0;
623 }
624
625 nPhotons = nPhotons + nPhotonsInStep;
626
627 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
628
629 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * fLightAttenuation * fnMeters));
630 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot);
631
632 hits[17] = eloss;
633 hits[18] = tlength;
634 hits[19] = nPhotons;
635 hits[20] = GetCellId (vol, hits);
54aa7396 636
c985a636 637 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
638
639 tlength = 0.0;
640 eloss = 0.0;
641 nPhotons = 0;
642 nPhotonsInStep = 0;
643
644 numStep = 0;
645 }
646 }
647
648}
649
650//_____________________________________________________________________________
651void AliVZEROv6::AddHit(Int_t track, Int_t *vol, Float_t *hits)
652{
653
654// Adds a VZERO hit
655
656 TClonesArray &lhits = *fHits;
657 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
658}
659
660//_____________________________________________________________________________
661void AliVZEROv6::AddDigits(Int_t *tracks, Int_t* digits)
662{
663
664// Adds a VZERO digit
665
666 TClonesArray &ldigits = *fDigits;
667 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
668}
669
670//_____________________________________________________________________________
671void AliVZEROv6::MakeBranch(Option_t *option)
672{
673
674// Creates new branches in the current Root Tree
675
676 char branchname[10];
677 sprintf(branchname,"%s",GetName());
678 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
679
680 const char *cH = strstr(option,"H");
681
682 if (fHits && TreeH() && cH) {
683 TreeH()->Branch(branchname,&fHits, fBufferSize);
684 AliDebug(2,Form("Making Branch %s for hits",branchname));
685 }
686
687 const char *cD = strstr(option,"D");
688
689 if (fDigits && fLoader->TreeD() && cD) {
690 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
691 AliDebug(2,Form("Making Branch %s for digits",branchname));
692 }
693
694}
695
696//_____________________________________________________________________________
697Int_t AliVZEROv6::GetCellId(Int_t *vol, Float_t *hits)
698{
699
700 // Returns Id of scintillator cell
701 // Right side from 0 to 47
702 // Left side from 48 to 95
703
704 // hits[8] = ring number (1 to 4)
705 // vol[1] = copy number (1 to 8)
706
707 Int_t index = vol[1];
708 Int_t RingNumber = Int_t(hits[8]);
709 fCellId = 0;
710
711// cout << "volID = " << vol[0] << " copy = " << vol[1] << endl;
712// cout << "X = " << hits[0] << " Y = " << hits[1] << endl;
713
714 Float_t phi = Float_t(TMath::ATan2(Double_t(hits[1]),Double_t(hits[0])) );
715 Float_t kRaddeg = 180.0/TMath::Pi();
716 phi = kRaddeg * phi;
717
718 if (index < 7) index = index + 8;
719
720 if (hits[2] < 0.0) {
721 if(RingNumber < 3) {
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); }
730 }
731 fCellId = index;
732 }
733
734 else if (hits[2] > 0.0){
735 index = (index - 7 + 48) + ( ( RingNumber - 1 ) * 8);
736 fCellId = index;}
737
738// cout << " ring = " << RingNumber << " phi = "<< phi << endl;
739// cout << " cellID = " << fCellId << endl;
740// cout << "**********" << endl;
741
742 return fCellId;
743
744
745}