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f4f76f65 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 5 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 16 th of june 2004 //
24// (now 8 sectors instead of 12 sectors as in previous version) //
25// V0R (now V0C) sits between Z values -89.6 and -84.9 cm //
26// V0L (now V0A) sits between Z values +339.0 and +341.0 cm //
27// New coordinate system has been implemented in october 2003 //
28// //
29//////////////////////////////////////////////////////////////////////
30
31// --- Standard libraries ---
32#include <Riostream.h>
33#include <stdlib.h>
34#include <string.h>
35
36// --- ROOT libraries ---
37#include <TClonesArray.h>
f4f76f65 38#include <TGeometry.h>
39#include <TLorentzVector.h>
40#include <TMath.h>
41#include <TNode.h>
42#include <TObjectTable.h>
43#include <TTUBE.h>
44#include <TTUBS.h>
45#include <TVirtualMC.h>
46#include <TParticle.h>
47
48// --- AliRoot header files ---
49#include "AliRun.h"
50#include "AliMC.h"
51#include "AliConst.h"
52#include "AliMagF.h"
53#include "AliVZEROLoader.h"
54#include "AliVZEROdigit.h"
55#include "AliVZEROhit.h"
56#include "AliVZEROv5.h"
254ef8f1 57#include "AliLog.h"
f4f76f65 58
59ClassImp(AliVZEROv5)
60
61//_____________________________________________________________________________
0b2bea8b 62AliVZEROv5:: AliVZEROv5():AliVZERO(),
63 fCellId(0),
64 fTrackPosition(),
65 fTrackMomentum(),
66 fLightYield(93.75),
67 fLightAttenuation(0.05),
68 fnMeters(15.0),
69 fFibToPhot(0.3)
f4f76f65 70{
71// Standard default constructor
72}
73
74//_____________________________________________________________________________
75AliVZEROv5::AliVZEROv5(const char *name, const char *title):
0b2bea8b 76 AliVZERO(name,title),
77 fCellId(0),
78 fTrackPosition(),
79 fTrackMomentum(),
80 fLightYield(93.75),
81 fLightAttenuation(0.05),
82 fnMeters(15.0),
83 fFibToPhot(0.3)
f4f76f65 84{
85
86// Standard constructor for V-zero Detector version 5
87
254ef8f1 88 AliDebug(2,"Create VZERO object ");
0b2bea8b 89//
90// fLightYield = 93.75; // Light yield in BC408 (93.75 eV per photon)
91// fLightAttenuation = 0.05; // Light attenuation in fiber (0.05 per meter)
92// fnMeters = 15.0; // Number of meters of clear fibers to PM
93// fFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
f4f76f65 94}
95
96//_____________________________________________________________________________
97void AliVZEROv5::CreateGeometry()
98{
99
100// Creates the GEANT geometry of the V-zero Detector version 5
101
254ef8f1 102 AliDebug(2,"Create Geometry ");
f4f76f65 103
104 Int_t *idtmed = fIdtmed->GetArray()-2999;
105
106 Int_t ndetR = 1;
107 Int_t ndetL = 1;
108
109 Int_t ncellsR = 1;
110 Int_t ncellsL = 1;
111
112 Int_t idrotm[999];
113
114 Float_t height1Right, height2Right, height3Right, height4Right;
115 Float_t heightRight;
116 Float_t theta;
117
118 Float_t halfThickQua;
119
120 Float_t zdet;
121 Float_t r0Right, r4Right, rBoxRight;
122 Float_t pi = TMath::Pi();
123
124 height1Right = 2.6; // height of cell 1, in cm
125 height2Right = 4.6; // height of cell 2, in cm
126 height3Right = 7.6; // height of cell 3, in cm
127 height4Right = 12.7; // height of cell 4, in cm
128
129 theta = pi/4.0/2.0; // half angular opening = 22.5 degrees
130
131 halfThickQua= fThickness1/2.0; // half thickness of elementary cell (inner ring)
132
133// distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
134// absorber nose sitting at 90 cm. Will use -zdet later...
135// size of V0R box (fThickness) is increased by 3 mm as compared to basic version
136
137 fThickness = fThickness + 0.3; // now 4.7 cm instead of 4.4 cm
138 zdet = 90.0 - 0.6 - fThickness/2.0; // distance to vertex (along Z axis)
139 r0Right = 4.20; // closest distance to center of the beam pipe
140 heightRight = height1Right + height2Right + height3Right + height4Right;
141 r4Right = r0Right + heightRight + 0.3;
142 rBoxRight = 38.0; // external radius of right box
143
144// Creation of mother volume v0LE - left part - :
145// Entrance face at +339.0 cm (new coordinate system) ...
146
147 Float_t partube[3];
148
149 partube[0] = 4.3;
150 partube[1] = 44.0;
151 partube[2] = fThickness1/2.0;
152
153 gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
154
155// Creation of five rings - left part - :
156// Entrance face at +339.0 cm (new coordinate system) ...
157
158// Mother volume v0L0 in which will be set 5 scintillator cells
159
160 Float_t partubs[5];
161
162 Float_t r0Left = 4.3;
163 Float_t height1Left = 3.3;
164 Float_t height2Left = 6.2;
165 Float_t height3Left = 8.9;
166 Float_t height4Left = 20.9;
167 Float_t heightLeft = height1Left + height2Left + height3Left + height4Left;
168
169 Float_t r4Left = r0Left + heightLeft;
170
171 partubs[0] = r0Left;
172 partubs[1] = r4Left;
173 partubs[2] = fThickness1/2.0;
174 partubs[3] = 90.0-22.5;
175 partubs[4] = 135.0-22.5;
176
177 gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5); // air volume
178
179 Float_t r1Left = r0Left + height1Left;
180
181 partubs[0] = r0Left;
182 partubs[1] = r1Left;
183
184 gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5); // quartz volume
185 gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
186
187 Float_t r2Left = r1Left + height2Left;
188
189 partubs[0] = r1Left;
190 partubs[1] = r2Left;
191
192 gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5); // quartz volume
193 gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
194
195 Float_t r3Left = r2Left + height3Left;
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 partubs[0] = r3Left;
204 partubs[1] = r4Left;
205
206 gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5); // quartz volume
207 gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
208
209// Creation of mother volume v0RI - right part - :
210
211 partube[0] = r0Right - 0.2;
212 partube[1] = r4Right + 1.0;
213 partube[2] = fThickness/2.0;
214
215 gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
216
217// Creation of carbon lids (3.0 mm thick) to keep v0RI box shut...
218
219 Float_t lidThickness = 0.30;
220
221 partube[0] = r0Right;
222 partube[1] = rBoxRight;
223 partube[2] = +lidThickness/2.0;
224
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
229// Creation of aluminum rings 3.0 mm thick to maintain the v0RI pieces ...
230
231 partube[0] = r0Right;
232 partube[1] = r0Right + 0.3;
233 partube[2] = +fThickness/2.0;
234
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] = rBoxRight - 0.3;
239 partube[1] = rBoxRight;
240 partube[2] = +fThickness/2.0;
241
242 gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
243 gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
244
245// Mother volume v0R0 in which will be set 6 scintillator cells
246
247 partubs[0] = r0Right;
248 partubs[1] = r4Right;
249 partubs[2] = fThickness/2.0;
250 partubs[3] = 90.0-22.5;
251 partubs[4] = 135.0-22.5;
252
253 gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5); // air volume
254
255// Elementary cell of ring 1 :
256// (cells of ring 1 will be shifted by 2.0 cm backwards to output fibers)
257
258 Float_t offsetFibers = 1.0;
259 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
260 Float_t r1Right = r0Right + 0.3 + height1Right;
261
262 partubs[0] = r0Right + 0.3;
263 partubs[1] = r1Right;
264 partubs[2] = fThickness1/2.0;
265
266 gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5); // scintillator volume
267 gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
268
269// Elementary cell of ring 2 :
270// (cells of ring 2 will be shifted by 1.0 cm backwards to output fibers)
271
272 Float_t r2Right = r1Right + height2Right;
273
274 partubs[0] = r1Right;
275 partubs[1] = r2Right;
276
277 gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5); // scintillator volume
278 gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
279
280// Elementary cell of ring 3 :
281
282 Float_t r3Right = r2Right + height3Right;
283
284 partubs[0] = r2Right;
285 partubs[1] = r3Right;
286 partubs[3] = 90.0-22.5;
287 partubs[4] = 112.5-22.5;
288
289 gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5); // scintillator volume
290 gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
291
292 partubs[3] = 112.5-22.5;
293 partubs[4] = 135.0-22.5;
294 gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5); // scintillator volume
295 gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
296
297// Elementary cell of ring 4 :
298
299 partubs[0] = r3Right;
300 partubs[1] = r4Right;
301 partubs[3] = 90.0-22.5;
302 partubs[4] = 112.5-22.5;
303
304 gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5); // scintillator volume
305 gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
306
307 partubs[3] = 112.5-22.5;
308 partubs[4] = 135.0-22.5;
309 gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5); // scintillator volume
310 gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
311
312 Float_t phiDeg = 180./4.;
313
314// Right part :
315
316 for(Float_t phi = 22.5; phi < 360.0; phi = phi + phiDeg)
317 {
318 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
319 gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
320 0.0,0.0,idrotm[902],"ONLY");
321 ndetR++;
322 }
323
324 gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
325
326 ncellsR = (ndetR - 1) * 6;
254ef8f1 327 AliInfo(Form("Number of cells on Right side = %d\n", ncellsR));
f4f76f65 328
329// Left part :
330
331 for(Float_t phi = 22.5; phi < 360.0; phi = phi + phiDeg)
332 {
333 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
334 gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
335 0.0,0.0,idrotm[902],"ONLY");
336 ndetL++;
337 }
338
339 gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,339.0+fThickness1/2.0,0,"ONLY");
340
341 ncellsL = (ndetL - 1) * 4;
254ef8f1 342 AliInfo(Form("Number of cells on Left side = %d\n", ncellsL));
f4f76f65 343
344}
345
346//_____________________________________________________________________________
347void AliVZEROv5::BuildGeometry()
348{
349
350// Builds simple ROOT TNode geometry for event display
351
254ef8f1 352 AliDebug(2,"VZERO BuildGeometry");
f4f76f65 353
354 TNode *top;
355
356 TNode *v0Rnode, *v0Rnode0, *v0Rnode7, *v0Rnode8, *v0Rnode9, *v0Rnode10;
357 TNode *v0Rnode1, *v0Rnode2, *v0Rnode3, *v0Rnode4, *v0Rnode5, *v0Rnode6;
358 TNode *v0Lnode, *v0Lnode0;
359 TNode *v0Lnode1, *v0Lnode2, *v0Lnode3, *v0Lnode4;
360
361 const int kColorVZERO = kGreen;
362
363 top = gAlice->GetGeometry()->GetNode("alice");
364
365 Float_t height1Right, height2Right, height3Right, height4Right;
366 Float_t heightRight;
367 Float_t theta;
368
369 Float_t halfThickQua;
370 Float_t zdet;
371 Float_t r0Right, r4Right, rBoxRight;
372 Float_t pi = TMath::Pi();
373
374 height1Right = 2.6; // height of cell 1, in cm
375 height2Right = 4.6; // height of cell 2, in cm
376 height3Right = 7.6; // height of cell 3, in cm
377 height4Right = 12.7; // height of cell 4, in cm
378
379 theta = pi/4.0/2.0;
380
381 halfThickQua = fThickness1/2.0;
382
383 zdet = 90.0 - 0.6 - fThickness/2.0;
384 r0Right = 4.20;
385 heightRight = height1Right + height2Right + height3Right + height4Right;
386 r4Right = r0Right + heightRight + 0.3;
387 rBoxRight = 38.0;
388
389 Int_t ndiv = 1;
390
391 Float_t partube[3];
392
393 partube[0] = r0Right - 0.2;
394 partube[1] = r4Right + 1.0;
395 partube[2] = fThickness/2.0;
396
397 TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
398
399 top->cd();
400
401 v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
402
403 v0Rnode->SetLineColor(kYellow);
404 fNodes->Add(v0Rnode);
405 v0Rnode->SetVisibility(2);
406
407// Rondelles de carbone (epaisseur 3.0 mm) de maintien des cellules ...
408
409 Float_t lidThickness = 0.30;
410
411 partube[0] = r0Right;
412 partube[1] = rBoxRight;
413 partube[2] = +lidThickness/2.0;
414
415 TTUBE *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
416
417 v0Rnode->cd();
418 v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);
419 v0Rnode7->SetLineColor(kYellow);
420 fNodes->Add(v0Rnode7);
421 v0Rnode->cd();
422 v0Rnode8 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
423 v0Rnode8->SetLineColor(kYellow);
424 fNodes->Add(v0Rnode8);
425
426 partube[0] = r0Right;
427 partube[1] = r0Right + 0.3;
428 partube[2] = +fThickness/2.0;
429
430 TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
431
432 v0Rnode->cd();
433 v0Rnode9 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
434 v0Rnode9->SetLineColor(kYellow);
435 fNodes->Add(v0Rnode9);
436
437 partube[0] = rBoxRight - 0.3;
438 partube[1] = rBoxRight;
439 partube[2] = +fThickness/2.0;
440
441 TTUBE *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
442
443 v0Rnode->cd();
444 v0Rnode10 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
445 v0Rnode10->SetLineColor(kYellow);
446 fNodes->Add(v0Rnode10);
447
448 Float_t partubs[5];
449
450 partubs[0] = r0Right;
451 partubs[1] = r4Right;
452 partubs[2] = fThickness/2.0;
453 partubs[3] = 90.0-22.5;
454 partubs[4] = 135.0-22.5;
455
456 TTUBS *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
457 partubs[3], partubs[4]);
458
459 v0R0->SetNumberOfDivisions(ndiv);
460
461 Float_t r1Right = r0Right + 0.3 + height1Right;
462 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
463 Float_t offsetFibers = 1.0;
464
465 partubs[0] = r0Right + 0.3;
466 partubs[1] = r1Right;
467 partubs[2] = fThickness1/2.0;
468
469 TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
470 partubs[3], partubs[4]);
471
472 v0R1->SetNumberOfDivisions(ndiv);
473
474 Float_t r2Right = r1Right + height2Right;
475
476 partubs[0] = r1Right;
477 partubs[1] = r2Right;
478
479 TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
480 partubs[3], partubs[4]);
481
482 v0R2->SetNumberOfDivisions(ndiv);
483
484// Ring 3 :
485
486 Float_t r3Right = r2Right + height3Right;
487
488 partubs[0] = r2Right;
489 partubs[1] = r3Right;
490 partubs[3] = 90.0-22.5;
491 partubs[4] = 112.5-22.5;
492
493 TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
494 partubs[3], partubs[4]);
495 v0R3->SetNumberOfDivisions(ndiv);
496
497 partubs[3] = 112.5-22.5;
498 partubs[4] = 135.0-22.5;
499
500 TTUBS *v0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
501 partubs[3], partubs[4]);
502 v0R4->SetNumberOfDivisions(ndiv);
503
504// Ring 4 :
505
506 partubs[0] = r3Right;
507 partubs[1] = r4Right;
508 partubs[3] = 90.0-22.5;
509 partubs[4] = 112.5-22.5;
510
511 TTUBS *v0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
512 partubs[3], partubs[4]);
513 v0R5->SetNumberOfDivisions(ndiv);
514
515 partubs[3] = 112.5-22.5;
516 partubs[4] = 135.0-22.5;
517
518 TTUBS *v0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
519 partubs[3], partubs[4]);
520 v0R6->SetNumberOfDivisions(ndiv);
521
522 Float_t phi;
523 Float_t phiDeg= 180./4.;
524
525 Int_t ndetR = 1;
526
527 char nameNode[12];
528
529 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
530
531 {
532 TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
533
534 sprintf(nameNode,"SUBDER%d",ndetR);
535
536 v0Rnode->cd();
537 v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);
538 v0Rnode0->SetLineColor(kYellow);
539 fNodes->Add(v0Rnode0);
540 ndetR++;
541
542 sprintf(nameNode,"SUBDER%d",ndetR);
543 v0Rnode0->cd();
544 v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset ,0);
545 v0Rnode1->SetLineColor(kColorVZERO);
546 fNodes->Add(v0Rnode1);
547 ndetR++;
548
549 sprintf(nameNode,"SUBDER%d",ndetR);
550 v0Rnode0->cd();
551 v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset + offsetFibers,0);
552 v0Rnode2->SetLineColor(kColorVZERO);
553 fNodes->Add(v0Rnode2);
554 ndetR++;
555
556 sprintf(nameNode,"SUBDER%d",ndetR);
557 v0Rnode0->cd();
558 v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset + 2.0*offsetFibers,0);
559 v0Rnode3->SetLineColor(kColorVZERO);
560 fNodes->Add(v0Rnode3);
561 ndetR++;
562
563 sprintf(nameNode,"SUBDER%d",ndetR);
564 v0Rnode0->cd();
565 v0Rnode4 = new TNode(nameNode,nameNode,v0R4,0.0,0.0, -offset + 2.0*offsetFibers,0);
566 v0Rnode4->SetLineColor(kColorVZERO);
567 fNodes->Add(v0Rnode4);
568 ndetR++;
569
570 sprintf(nameNode,"SUBDER%d",ndetR);
571 v0Rnode0->cd();
572 v0Rnode5 = new TNode(nameNode,nameNode,v0R5,0.0,0.0, -offset + 2.0*offsetFibers,0);
573 v0Rnode5->SetLineColor(kColorVZERO);
574 fNodes->Add(v0Rnode5);
575 ndetR++;
576
577 sprintf(nameNode,"SUBDER%d",ndetR);
578 v0Rnode0->cd();
579 v0Rnode6 = new TNode(nameNode,nameNode,v0R6,0.0,0.0, -offset + 2.0*offsetFibers,0);
580 v0Rnode6->SetLineColor(kColorVZERO);
581 fNodes->Add(v0Rnode6);
582 ndetR++;
583
584 v0Rnode0->SetVisibility(2);
585 }
586
587// Left side of VZERO :
588
589 Float_t r0Left = 4.3;
590 Float_t height1Left = 3.3;
591 Float_t height2Left = 6.2;
592 Float_t height3Left = 8.9;
593 Float_t height4Left = 20.9;
594 Float_t heightLeft = height1Left + height2Left + height3Left + height4Left;
595
596 Float_t r4Left = r0Left + heightLeft;
597
598 partube[0] = r0Left;
599 partube[1] = r4Left;
600 partube[2] = fThickness1/2.0;
601
602 TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
603
604 top->cd();
605
606 v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,339.0+fThickness1/2.0,0);
607
608 v0Lnode->SetLineColor(kBlue);
609 fNodes->Add(v0Lnode);
610
611 v0Lnode->SetVisibility(2);
612
613 partubs[0] = r0Left;
614 partubs[1] = r4Left;
615 partubs[2] = fThickness1/2.0;
616 partubs[3] = 90.0-22.5;
617 partubs[4] = 135.0-22.5;
618
619 TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
620 partubs[3], partubs[4]);
621
622 v0L0->SetNumberOfDivisions(ndiv);
623 v0L0->SetLineColor(7);
624
625 Float_t offsetLeft;
626 offsetLeft = - fThickness1/2.0;
627
628 Float_t r1Left = r0Left + height1Left;
629
630 partubs[0] = r0Left;
631 partubs[1] = r1Left;
632
633 TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
634 partubs[3], partubs[4]);
635 v0L1->SetNumberOfDivisions(ndiv);
636
637 Float_t r2Left = r1Left + height2Left;
638
639 partubs[0] = r1Left;
640 partubs[1] = r2Left;
641
642 TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
643 partubs[3], partubs[4]);
644 v0L2->SetNumberOfDivisions(ndiv);
645
646 Float_t r3Left = r2Left + height3Left;
647
648 partubs[0] = r2Left;
649 partubs[1] = r3Left;
650
651 TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
652 partubs[3], partubs[4]);
653 v0L3->SetNumberOfDivisions(ndiv);
654
655 partubs[0] = r3Left;
656 partubs[1] = r4Left;
657
658 TTUBS *v0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
659 partubs[3], partubs[4]);
660 v0L4->SetNumberOfDivisions(ndiv);
661
662 Int_t ndetL = 1;
663
664 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
665
666 {
667
668 TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
669
670 sprintf(nameNode,"SUBDEL%d",ndetL);
671
672 v0Lnode->cd();
673 v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);
674 v0Lnode0->SetLineColor(kColorVZERO);
675 fNodes->Add(v0Lnode0);
676 ndetL++;
677
678 sprintf(nameNode,"SUBDEL%d",ndetL);
679 v0Lnode0->cd();
680 v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);
681 v0Lnode1->SetLineColor(kColorVZERO);
682 fNodes->Add(v0Lnode1);
683 ndetL++;
684
685 sprintf(nameNode,"SUBDEL%d",ndetL);
686 v0Lnode0->cd();
687 v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);
688 v0Lnode2->SetLineColor(kColorVZERO);
689 fNodes->Add(v0Lnode2);
690 ndetL++;
691
692 sprintf(nameNode,"SUBDEL%d",ndetL);
693 v0Lnode0->cd();
694 v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);
695 v0Lnode3->SetLineColor(kColorVZERO);
696 fNodes->Add(v0Lnode3);
697 ndetL++;
698
699 sprintf(nameNode,"SUBDEL%d",ndetL);
700 v0Lnode0->cd();
701 v0Lnode4 = new TNode(nameNode,nameNode,v0L4,0.0,0.0, 0.0,0);
702 v0Lnode4->SetLineColor(kColorVZERO);
703 fNodes->Add(v0Lnode4);
704 ndetL++;
705
706 v0Lnode0->SetVisibility(2);
707 }
708}
709
710//_____________________________________________________________________________
711void AliVZEROv5::CreateMaterials()
712{
713
714// Creates materials used for geometry
715
254ef8f1 716 AliDebug(2,"Create materials");
f4f76f65 717
718/*
719 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,
720 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
721
722
723 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,
724 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
725
726 Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
727 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
728 1.662295, 1.68337 };
729
730 Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
731 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
732
733 Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
734
735
736 Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
737
738
739 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,
740 1e-4,1e-4,1e-4,1e-4 };
741 Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
742
743*/
744
745 Int_t *idtmed = fIdtmed->GetArray()-2999;
746
f4f76f65 747
748// Parameters related to Quarz (SiO2) :
749
750 Float_t aqua[2], zqua[2], densqua, wmatqua[2];
751 Int_t nlmatqua;
752
753 aqua[0] = 28.09;
754 aqua[1] = 16.;
755 zqua[0] = 14.;
756 zqua[1] = 8.;
757 densqua = 2.64;
758 nlmatqua = -2;
759 wmatqua[0] = 1.;
760 wmatqua[1] = 2.;
761
762// Parameters related to aluminum sheets :
763
764 Float_t aal = 26.98;
765 Float_t zal = 13.00;
766 Float_t densal= 2.7;
767 Float_t radlal= 8.9;
768
769// Parameters related to scintillator CH :
770
771 Float_t ascin[2] = {1.00794,12.011};
772 Float_t zscin[2] = {1.,6.};
773 Float_t wscin[2] = {1.,1.};
774 Float_t denscin = 1.032;
775
b84cd1d5 776// AIR
777
778 Float_t aAir[4]={12.,14.,16.,36.};
779 Float_t zAir[4]={6.,7.,8.,18.};
780 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
781 Float_t dAir = 1.20479E-3;
782
f4f76f65 783// Definition of materials :
784
b84cd1d5 785 AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
786 AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
f4f76f65 787 AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
788 AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
789 AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
790 AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
791
792 AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
793
794
795 Int_t iSXFLD = gAlice->Field()->Integ();
796 Float_t sXMGMX = gAlice->Field()->Max();
797
798 Float_t tmaxfd, stemax, deemax, epsil, stmin;
799
800 tmaxfd = 10.;
801 stemax = 0.1;
802 deemax = 0.1;
803 epsil = 0.001;
804 stmin = 0.001;
805
806// Active Air :
807 AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
808 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
809
810// Inactive air :
811
812 AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
813 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
814
815 AliMedium(2, "CARBON$ ", 2, 1, iSXFLD, sXMGMX,
816 tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
817
818 AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
819 tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
820
821 AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
822 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
823
824
825 AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
826 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
827
828 AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
829
830 gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
831 gMC->Gstpar(idtmed[3000], "HADR", 1.);
832 gMC->Gstpar(idtmed[3000], "DCAY", 1.);
833 gMC->Gstpar(idtmed[3000], "DRAY", 1.);
834
835 gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
836 gMC->Gstpar(idtmed[3001], "HADR", 1.);
837 gMC->Gstpar(idtmed[3001], "DCAY", 1.);
838 gMC->Gstpar(idtmed[3001], "DRAY", 1.);
839
840 gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
841 gMC->Gstpar(idtmed[3002], "HADR", 1.);
842 gMC->Gstpar(idtmed[3002], "DCAY", 1.);
843 gMC->Gstpar(idtmed[3002], "DRAY", 1.);
844 gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
845 gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
846
847 gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
848 gMC->Gstpar(idtmed[3003], "HADR", 1.);
849 gMC->Gstpar(idtmed[3003], "DCAY", 1.);
850 gMC->Gstpar(idtmed[3003], "DRAY", 1.);
851
852 gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
853 gMC->Gstpar(idtmed[3004], "HADR", 1.);
854 gMC->Gstpar(idtmed[3004], "DCAY", 1.);
855 gMC->Gstpar(idtmed[3004], "DRAY", 1.);
856 gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
857 gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
858
859 gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
860 gMC->Gstpar(idtmed[3005], "HADR", 1.);
861 gMC->Gstpar(idtmed[3005], "DCAY", 1.);
862 gMC->Gstpar(idtmed[3005], "DRAY", 1.);
863 gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
864 gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
865
866
867// geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
868// geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
869
870// gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
871// gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
872
873}
874
875//_____________________________________________________________________________
ba380e33 876void AliVZEROv5::DrawModule() const
f4f76f65 877{
878
879// Drawing is done in DrawVZERO.C
880
254ef8f1 881 AliDebug(2,"DrawModule");
f4f76f65 882}
883
884//_____________________________________________________________________________
885void AliVZEROv5::Init()
886{
887// Initialises version 2 of the VZERO Detector
888// Just prints an information message
889
254ef8f1 890 AliInfo(Form("VZERO version %d initialized \n",IsVersion()));
f4f76f65 891
892// gMC->SetMaxStep(fMaxStepAlu);
893// gMC->SetMaxStep(fMaxStepQua);
894
895 AliVZERO::Init();
896}
897
898//_____________________________________________________________________________
899void AliVZEROv5::StepManager()
900{
901
902// Step Manager, called at each step
903
904 Int_t copy;
905 static Int_t vol[4];
906 static Float_t hits[21];
907 static Float_t eloss, tlength;
908 static Int_t nPhotonsInStep;
909 static Int_t nPhotons;
910 static Int_t numStep;
911 Float_t ringNumber;
912 Float_t destep, step;
913
914 numStep += 1;
915
916// We keep only charged tracks :
917
918 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
919
920 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
921 vol[2] = gMC->CurrentVolID(copy);
922 vol[3] = copy;
923
d6fb41ac 924 static Int_t idV0R1 = gMC->VolId("V0R1");
925 static Int_t idV0L1 = gMC->VolId("V0L1");
926 static Int_t idV0R2 = gMC->VolId("V0R2");
927 static Int_t idV0L2 = gMC->VolId("V0L2");
928 static Int_t idV0R3 = gMC->VolId("V0R3");
929 static Int_t idV0L3 = gMC->VolId("V0L3");
930 static Int_t idV0R4 = gMC->VolId("V0R4");
931 static Int_t idV0L4 = gMC->VolId("V0L4");
932 static Int_t idV0R5 = gMC->VolId("V0R5");
933 static Int_t idV0R6 = gMC->VolId("V0R6");
934
935 if ( gMC->CurrentVolID(copy) == idV0R1 ||
936 gMC->CurrentVolID(copy) == idV0L1 )
f4f76f65 937 ringNumber = 1.0;
d6fb41ac 938 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
939 gMC->CurrentVolID(copy) == idV0L2 )
f4f76f65 940 ringNumber = 2.0;
d6fb41ac 941 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
942 gMC->CurrentVolID(copy) == idV0R4 ||
943 gMC->CurrentVolID(copy) == idV0L3 )
f4f76f65 944 ringNumber = 3.0;
d6fb41ac 945 else if ( gMC->CurrentVolID(copy) == idV0R5 ||
946 gMC->CurrentVolID(copy) == idV0R6 ||
947 gMC->CurrentVolID(copy) == idV0L4 )
f4f76f65 948 ringNumber = 4.0;
949 else
950 ringNumber = 0.0;
951
952 if ( ringNumber > 0.5 ) {
953
954 destep = gMC->Edep();
955 step = gMC->TrackStep();
956
957 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
958 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
959
960 eloss += destep;
961 tlength += step;
962
963 if ( gMC->IsTrackEntering() ) {
964
965 nPhotons = nPhotonsInStep;
966 gMC->TrackPosition(fTrackPosition);
967 gMC->TrackMomentum(fTrackMomentum);
968
969 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
970 fTrackMomentum.Py() * fTrackMomentum.Py() );
971
972 hits[0] = fTrackPosition.X();
973 hits[1] = fTrackPosition.Y();
974 hits[2] = fTrackPosition.Z();
975 hits[3] = Float_t (gMC->TrackPid());
976
977 hits[4] = gMC->TrackTime();
978 hits[5] = gMC->TrackCharge();
979 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
980 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
981 hits[8] = ringNumber;
982
983 hits[9] = pt;
984 hits[10] = fTrackMomentum.P();
985 hits[11] = fTrackMomentum.Px();
986 hits[12] = fTrackMomentum.Py();
987 hits[13] = fTrackMomentum.Pz();
988
989 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
990 hits[14] = par->Vx();
991 hits[15] = par->Vy();
992 hits[16] = par->Vz();
993
994 tlength = 0.0;
995 eloss = 0.0;
996 }
997
998 nPhotons = nPhotons + nPhotonsInStep;
999
1000 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1001
1002 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * fLightAttenuation * fnMeters));
1003 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot);
1004
1005 hits[17] = eloss;
1006 hits[18] = tlength;
1007 hits[19] = nPhotons;
1008 hits[20] = GetCellId (vol, hits);
1009
1010 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1011
1012 tlength = 0.0;
1013 eloss = 0.0;
1014 nPhotons = 0;
1015 nPhotonsInStep = 0;
1016
1017 numStep = 0;
1018 }
1019 }
1020
1021}
1022
1023//_____________________________________________________________________________
1024void AliVZEROv5::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1025{
1026
1027// Adds a VZERO hit
1028
1029 TClonesArray &lhits = *fHits;
1030 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1031}
1032
1033//_____________________________________________________________________________
1034void AliVZEROv5::AddDigits(Int_t *tracks, Int_t* digits)
1035{
1036
1037// Adds a VZERO digit
1038
1039 TClonesArray &ldigits = *fDigits;
1040 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1041}
1042
1043//_____________________________________________________________________________
1044void AliVZEROv5::MakeBranch(Option_t *option)
1045{
1046
1047// Creates new branches in the current Root Tree
1048
1049 char branchname[10];
1050 sprintf(branchname,"%s",GetName());
254ef8f1 1051 AliDebug(2,Form("fBufferSize = %d",fBufferSize));
f4f76f65 1052
1053 const char *cH = strstr(option,"H");
1054
1055 if (fHits && TreeH() && cH) {
1056 TreeH()->Branch(branchname,&fHits, fBufferSize);
254ef8f1 1057 AliDebug(2,Form("Making Branch %s for hits",branchname));
f4f76f65 1058 }
1059
1060 const char *cD = strstr(option,"D");
1061
1062 if (fDigits && fLoader->TreeD() && cD) {
1063 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
254ef8f1 1064 AliDebug(2,Form("Making Branch %s for digits",branchname));
f4f76f65 1065 }
1066
1067}
1068
1069//_____________________________________________________________________________
1070Int_t AliVZEROv5::GetCellId(Int_t *vol, Float_t *hits)
1071{
1072
1073 // Returns Id of scintillator cell
1074 // Right side from 0 to 47
1075 // Left side from 48 to 95
1076
1077 // hits[8] = ring number (1 to 4)
1078 // vol[1] = copy number (1 to 8)
1079
1080 Int_t index = vol[1];
1081 Int_t RingNumber = Int_t(hits[8]);
1082 fCellId = 0;
1083
1084// cout << "volID = " << vol[0] << " copy = " << vol[1] << endl;
1085// cout << "X = " << hits[0] << " Y = " << hits[1] << endl;
1086
1087 Float_t phi = Float_t(TMath::ATan2(Double_t(hits[1]),Double_t(hits[0])) );
f4f76f65 1088 phi = kRaddeg * phi;
1089
1090 if (index < 7) index = index + 8;
1091
1092 if (hits[2] < 0.0) {
1093 if(RingNumber < 3) {
1094 index = (index - 7) + ( ( RingNumber - 1 ) * 8);}
1095 else if(RingNumber >= 3){
1096 if(gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R3")||
1097 gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R5") )
1098 {index = (index*2 - 14) + ( ( RingNumber - 2 ) * 16); }
1099 if(gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R4")||
1100 gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R6") )
1101 {index = (index*2 - 13) + ( ( RingNumber - 2 ) * 16); }
1102 }
1103 fCellId = index;
1104 }
1105
1106 else if (hits[2] > 0.0){
1107 index = (index - 7 + 48) + ( ( RingNumber - 1 ) * 8);
1108 fCellId = index;}
1109
1110// cout << " ring = " << RingNumber << " phi = "<< phi << endl;
1111// cout << " cellID = " << fCellId << endl;
1112// cout << "**********" << endl;
1113
1114 return fCellId;
1115
1116
1117}