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Test for clusterisation, tracker and ESD filling of MUON for ALICE reconstruction...
[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>
42#include <TGeant3.h>
43#include <TGeometry.h>
44#include <TLorentzVector.h>
45#include <TMath.h>
46#include <TNode.h>
47#include <TObjectTable.h>
48#include <TTUBE.h>
49#include <TTUBS.h>
50#include <TVirtualMC.h>
51#include <TParticle.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 "AliVZEROv3.h"
f9721da6 62
63ClassImp(AliVZEROv3)
64
65//_____________________________________________________________________________
66AliVZEROv3:: AliVZEROv3():AliVZERO()
67{
68// Standard default constructor
69}
70
71//_____________________________________________________________________________
72AliVZEROv3::AliVZEROv3(const char *name, const char *title):
73 AliVZERO(name,title)
74{
75
76// Standard constructor for V-zero Detector version 2
77
78 Int_t i;
79
80 printf("\n");
81 for(i=0;i<26;i++) printf("*");
82 printf(" Create VZERO object ");
83 for(i=0;i<26;i++) printf("*");
84 printf("\n");
85
86 fLightYield = 93.75;
87 fLightAttenuation = 0.05;
88 fnMeters = 15.0;
89 fFibToPhot = 0.3;
90
91}
92
93//_____________________________________________________________________________
94void AliVZEROv3::CreateGeometry()
95{
96
97// Creates the GEANT geometry of the V-zero Detector version 3
98
99 Int_t i;
100
101 printf("\n");
102 for(i=0;i<26;i++) printf("*");
103 printf(" Create VZERO Geometry ");
104 for(i=0;i<26;i++) printf("*");
105 printf("\n");
106
107 Int_t *idtmed = fIdtmed->GetArray()-2999;
108
109 Int_t ndetR = 1;
110 Int_t ndetL = 1;
111
112 Int_t ncellsR = 1;
113 Int_t ncellsL = 1;
114
115 Int_t idrotm[999];
116
117 Float_t height1Right, height2Right, height3Right;
118 Float_t heightRight;
119 Float_t theta;
120
121 Float_t halfThickQua;
122
123 Float_t zdet;
124 Float_t r0Right, r3Right;
125 Float_t pi = TMath::Pi();
126
127 height1Right = 1.82 + 3.81; // height of cell 1, in cm
128 height2Right = 4.72 + 7.12; // height of cell 2, in cm
129 height3Right = 10.83; // height of cell 3, in cm
130
131 theta = pi/6.0/2.0; // half angular opening = 15 degrees
132
133 halfThickQua= fThickness1/2.0; // half thickness of elementary cell (inner ring)
134
135// distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
136// absorber nose sitting at 90 cm. Will use -zdet later...
137// size of V0R box (fThickness) is increased by 1 mm as compared to version v2
138
139 fThickness = fThickness + 0.1;
140 zdet = 90.0 - 0.6 - fThickness/2.0; // distance to vertex (along Z axis)
141 r0Right = 4.05; // closest distance to center of the beam pipe
142 heightRight = height1Right + height2Right + height3Right;
143 r3Right = r0Right + heightRight;
144
145// Creation of mother volume v0LE - left part - :
146// Entrance face at +350.0 cm (new coordinate system) ...
147
148 Float_t partube[3];
149
150 partube[0] = 4.3;
151 partube[1] = 45.0;
152 partube[2] = fThickness1/2.0;
153
154 gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
155
156// Creation of five rings - left part - :
157// Entrance face at +350.0 cm (new coordinate system) ...
158
159// Mother volume v0L0 in which will be set 5 scintillator cells
160
161 Float_t partubs[5];
162
163 Float_t r0Left = 4.3;
164 Float_t height1Left = 2.6 + 4.1; // previous ring 1 + ring 2
165 Float_t height2Left = 6.4 + 10.2; // previous ring 3 + ring 4
166 Float_t height3Left = 16.9;
167 Float_t heightLeft = height1Left + height2Left + height3Left;
168
169 Float_t r3Left = r0Left + heightLeft;
170
171 partubs[0] = r0Left;
172 partubs[1] = r3Left;
173 partubs[2] = fThickness1/2.0;
174 partubs[3] = 90.0-15.0;
175 partubs[4] = 120.0-15.0;
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 partubs[0] = r2Left;
196 partubs[1] = r3Left;
197
198 gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5); // quartz volume
199 gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
200
201
202// Creation of mother volume v0RI - right part - :
203
204 partube[0] = r0Right - 0.2;
205 partube[1] = r3Right + 1.0;
206 partube[2] = fThickness/2.0;
207
208 gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
209
210// Creation of carbon lids (3.5 mm thick) to keep v0RI box shut...
211
212 Float_t lidThickness = 0.35;
213
214 partube[0] = r0Right;
215 partube[1] = r3Right;
216 partube[2] = +lidThickness/2.0;
217
218 gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
219 gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
220 gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
221
222// Creation of aluminum rings to maintain the v0RI pieces ...
223
224 partube[0] = r0Right - 0.2;
225 partube[1] = r0Right;
226 partube[2] = +fThickness/2.0;
227
228 gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
229 gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
230
231 partube[0] = r3Right;
232 partube[1] = r3Right + 1.0;
233 partube[2] = +fThickness/2.0;
234
235 gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
236 gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
237
238// Mother volume v0R0 in which will be set 3 scintillator cells
239
240 partubs[0] = r0Right;
241 partubs[1] = r3Right;
242 partubs[2] = fThickness/2.0;
243 partubs[3] = 90.0-15.0;
244 partubs[4] = 120.0-15.0;
245
246 gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5); // air volume
247
248// Elementary cell of ring 1 :
249// (cells of ring 1 will be shifted by 1.7 cm towards vertex to output fibers)
250
251 Float_t offsetFibers = 1.7;
252 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
253 Float_t r1Right = r0Right + height1Right;
254
255 partubs[0] = r0Right;
256 partubs[1] = r1Right;
257 partubs[2] = fThickness1/2.0;
258
259 gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5); // scintillator volume
260 gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
261
262// Elementary cell of ring 2 :
263
264 Float_t r2Right = r1Right + height2Right;
265
266 partubs[0] = r1Right;
267 partubs[1] = r2Right;
268
269 gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5); // scintillator volume
270 gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
271
272
273// Elementary cell of ring 3 :
274
275 partubs[0] = r2Right;
276 partubs[1] = r3Right;
277
278 gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5); // scintillator volume
279 gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
280
281
282 Float_t phiDeg = 180./6.;
283
284// Right part :
285
286 for(Float_t phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
287 {
288 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
289 gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
290 0.0,0.0,idrotm[902],"ONLY");
291 ndetR++;
292 }
293
294 gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
295
296 ncellsR = (ndetR - 1) * 3;
297 printf(" Number of cells on Right side = %d\n", ncellsR);
298
299// Left part :
300
301 for(Float_t phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
302 {
303 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
304 gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
305 0.0,0.0,idrotm[902],"ONLY");
306 ndetL++;
307 }
308
309 gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
310
311 ncellsL = (ndetL - 1) * 3;
312 printf(" Number of cells on Left side = %d\n", ncellsL);
313 for(i=0;i<75;i++) printf("*");
314 printf("\n");
315
316}
317
318//_____________________________________________________________________________
319void AliVZEROv3::BuildGeometry()
320{
321
322// Builds simple ROOT TNode geometry for event display
323
324 Int_t i;
325
326 printf("\n");
327 for(i=0;i<30;i++) printf("*");
328 printf(" VZERO BuildGeometry ");
329 for(i=0;i<30;i++) printf("*");
330 printf("\n");
331
332 TNode *top;
333
334 TNode *v0Rnode, *v0Rnode0, *v0Rnode6 , *v0Rnode7, *v0Rnode8, *v0Rnode9;
335 TNode *v0Rnode1, *v0Rnode2, *v0Rnode3;
336 TNode *v0Lnode, *v0Lnode0;
337 TNode *v0Lnode1, *v0Lnode2, *v0Lnode3;
338
339 const int kColorVZERO = kGreen;
340
341 top = gAlice->GetGeometry()->GetNode("alice");
342
343 Float_t height1Right, height2Right, height3Right;
344 Float_t heightRight;
345 Float_t theta;
346
347 Float_t halfThickQua;
348 Float_t zdet;
349 Float_t r0Right, r3Right;
350 Float_t pi = TMath::Pi();
351
352 height1Right = 1.82 + 3.81; // height of cell 1, in cm
353 height2Right = 4.72 + 7.12; // height of cell 2, in cm
354 height3Right = 10.83; // height of cell 3, in cm
355
356 theta = pi/6.0/2.0;
357
358 halfThickQua = fThickness1/2.0;
359
360 zdet = 90.0 - 0.6 - fThickness/2.0;
361 r0Right = 4.05;
362 heightRight = height1Right + height2Right + height3Right;
363 r3Right = r0Right + heightRight;
364
365 Int_t ndiv = 1;
366
367 Float_t partube[3];
368
369 partube[0] = r0Right - 0.2;
370 partube[1] = r3Right + 1.0;
371 partube[2] = fThickness/2.0;
372
373 TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
374
375 top->cd();
376
377 v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
378
379 v0Rnode->SetLineColor(kYellow);
380 fNodes->Add(v0Rnode);
381 v0Rnode->SetVisibility(2);
382
383// Rondelles de carbone (epaisseur 3.5 mm) de maintien des cellules ...
384
385 Float_t lidThickness = 0.35;
386
387 partube[0] = r0Right;
388 partube[1] = r3Right;
389 partube[2] = +lidThickness/2.0;
390
391 TTUBE *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
392
393 v0Rnode->cd();
394 v0Rnode6 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);
395 v0Rnode6->SetLineColor(kYellow);
396 fNodes->Add(v0Rnode6);
397 v0Rnode->cd();
398 v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
399 v0Rnode7->SetLineColor(kYellow);
400 fNodes->Add(v0Rnode7);
401
402 partube[0] = r0Right - 0.2;
403 partube[1] = r0Right;
404 partube[2] = +fThickness/2.0;
405
406 TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
407
408 v0Rnode->cd();
409 v0Rnode8 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
410 v0Rnode8->SetLineColor(kYellow);
411 fNodes->Add(v0Rnode8);
412
413 partube[0] = r3Right;
414 partube[1] = r3Right + 1.0;
415 partube[2] = +fThickness/2.0;
416
417 TTUBE *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
418
419 v0Rnode->cd();
420 v0Rnode9 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
421 v0Rnode9->SetLineColor(kYellow);
422 fNodes->Add(v0Rnode9);
423
424 Float_t partubs[5];
425
426 partubs[0] = r0Right;
427 partubs[1] = r3Right;
428 partubs[2] = fThickness/2.0;
429 partubs[3] = 90.0-15.0;
430 partubs[4] = 120.0-15.0;
431
432 TTUBS *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
433 partubs[3], partubs[4]);
434
435 v0R0->SetNumberOfDivisions(ndiv);
436
437 Float_t r1Right = r0Right + height1Right;
438 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
439 Float_t offsetFibers = 1.7;
440
441 partubs[0] = r0Right;
442 partubs[1] = r1Right;
443 partubs[2] = fThickness1/2.0;
444
445 TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
446 partubs[3], partubs[4]);
447
448 v0R1->SetNumberOfDivisions(ndiv);
449
450 Float_t r2Right = r1Right + height2Right;
451
452 partubs[0] = r1Right;
453 partubs[1] = r2Right;
454
455 TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
456 partubs[3], partubs[4]);
457
458 v0R2->SetNumberOfDivisions(ndiv);
459
460 partubs[0] = r2Right;
461 partubs[1] = r3Right;
462
463 TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
464 partubs[3], partubs[4]);
465 v0R3->SetNumberOfDivisions(ndiv);
466
467 Float_t phi;
468 Float_t phiDeg= 180./6.;
469
470 Int_t ndetR = 1;
471
472 char nameNode[12];
473
474 for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
475
476 {
477
478 TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
479
480 sprintf(nameNode,"SUBDER%d",ndetR);
481
482 v0Rnode->cd();
483 v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);
484 v0Rnode0->SetLineColor(kYellow);
485 fNodes->Add(v0Rnode0);
486 ndetR++;
487
488 sprintf(nameNode,"SUBDER%d",ndetR);
489 v0Rnode0->cd();
490 v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset+ offsetFibers ,0);
491 v0Rnode1->SetLineColor(kColorVZERO);
492 fNodes->Add(v0Rnode1);
493 ndetR++;
494
495 sprintf(nameNode,"SUBDER%d",ndetR);
496 v0Rnode0->cd();
497 v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset,0);
498 v0Rnode2->SetLineColor(kColorVZERO);
499 fNodes->Add(v0Rnode2);
500 ndetR++;
501
502 sprintf(nameNode,"SUBDER%d",ndetR);
503 v0Rnode0->cd();
504 v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset,0);
505 v0Rnode3->SetLineColor(kColorVZERO);
506 fNodes->Add(v0Rnode3);
507 ndetR++;
508
509 v0Rnode0->SetVisibility(2);
510
511 }
512
513// Left side of VZERO :
514
515 Float_t r0Left = 4.3;
516 Float_t height1Left = 2.6 + 4.1;
517 Float_t height2Left = 6.4 + 10.2;
518 Float_t height3Left = 16.9;
519 Float_t heightLeft = height1Left + height2Left + height3Left;
520
521 Float_t r3Left = r0Left + heightLeft;
522
523 partube[0] = r0Left;
524 partube[1] = r3Left;
525 partube[2] = fThickness1/2.0;
526
527 TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
528
529 top->cd();
530
531 v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,350.0+fThickness1/2.0,0);
532
533 v0Lnode->SetLineColor(kBlue);
534 fNodes->Add(v0Lnode);
535
536 v0Lnode->SetVisibility(2);
537
538 partubs[0] = r0Left;
539 partubs[1] = r3Left;
540 partubs[2] = fThickness1/2.0;
541 partubs[3] = 90.0-15.0;
542 partubs[4] = 120.0-15.0;
543
544 TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
545 partubs[3], partubs[4]);
546
547 v0L0->SetNumberOfDivisions(ndiv);
548 v0L0->SetLineColor(7);
549
550 Float_t offsetLeft;
551 offsetLeft = - fThickness1/2.0;
552
553 Float_t r1Left = r0Left + height1Left;
554
555 partubs[0] = r0Left;
556 partubs[1] = r1Left;
557
558 TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
559 partubs[3], partubs[4]);
560 v0L1->SetNumberOfDivisions(ndiv);
561
562 Float_t r2Left = r1Left + height2Left;
563
564 partubs[0] = r1Left;
565 partubs[1] = r2Left;
566
567 TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
568 partubs[3], partubs[4]);
569 v0L2->SetNumberOfDivisions(ndiv);
570
571 partubs[0] = r2Left;
572 partubs[1] = r3Left;
573
574 TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
575 partubs[3], partubs[4]);
576 v0L3->SetNumberOfDivisions(ndiv);
577
578 Int_t ndetL = 1;
579
580 for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
581
582 {
583
584 TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
585
586
587 sprintf(nameNode,"SUBDEL%d",ndetL);
588
589 v0Lnode->cd();
590 v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);
591 v0Lnode0->SetLineColor(kColorVZERO);
592 fNodes->Add(v0Lnode0);
593 ndetL++;
594
595 sprintf(nameNode,"SUBDEL%d",ndetL);
596 v0Lnode0->cd();
597 v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);
598 v0Lnode1->SetLineColor(kColorVZERO);
599 fNodes->Add(v0Lnode1);
600 ndetL++;
601
602 sprintf(nameNode,"SUBDEL%d",ndetL);
603 v0Lnode0->cd();
604 v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);
605 v0Lnode2->SetLineColor(kColorVZERO);
606 fNodes->Add(v0Lnode2);
607 ndetL++;
608
609 sprintf(nameNode,"SUBDEL%d",ndetL);
610 v0Lnode0->cd();
611 v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);
612 v0Lnode3->SetLineColor(kColorVZERO);
613 fNodes->Add(v0Lnode3);
614 ndetL++;
615
616 v0Lnode0->SetVisibility(2);
617
618 }
619
620}
621
622//_____________________________________________________________________________
623void AliVZEROv3::CreateMaterials()
624{
625
626// Creates materials used for geometry
627
628 Int_t i;
629
630 printf("\n");
631 for(i=0;i<25;i++) printf("*");
632 printf(" VZERO create materials ");
633 for(i=0;i<26;i++) printf("*");
634 printf("\n");
635
636/*
637 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,
638 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
639
640
641 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,
642 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
643
644 Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
645 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
646 1.662295, 1.68337 };
647
648 Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
649 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
650
651 Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
652
653
654 Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
655
656
657 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,
658 1e-4,1e-4,1e-4,1e-4 };
659 Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
660
661*/
662
663 Int_t *idtmed = fIdtmed->GetArray()-2999;
664
665// TGeant3 *geant3 = (TGeant3*) gMC;
666
667// Parameters related to Quarz (SiO2) :
668
669 Float_t aqua[2], zqua[2], densqua, wmatqua[2];
670 Int_t nlmatqua;
671
672 aqua[0] = 28.09;
673 aqua[1] = 16.;
674 zqua[0] = 14.;
675 zqua[1] = 8.;
676 densqua = 2.64;
677 nlmatqua = -2;
678 wmatqua[0] = 1.;
679 wmatqua[1] = 2.;
680
681// Parameters related to aluminum sheets :
682
683 Float_t aal = 26.98;
684 Float_t zal = 13.00;
685 Float_t densal= 2.7;
686 Float_t radlal= 8.9;
687
688// Parameters related to scintillator CH :
689
690 Float_t ascin[2] = {1.00794,12.011};
691 Float_t zscin[2] = {1.,6.};
692 Float_t wscin[2] = {1.,1.};
693 Float_t denscin = 1.032;
694
695// Definition of materials :
696
697 AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
698 AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
699 AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
700 AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
701 AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
702 AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
703
704 AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
705
706
707 Int_t iSXFLD = gAlice->Field()->Integ();
708 Float_t sXMGMX = gAlice->Field()->Max();
709
710 Float_t tmaxfd, stemax, deemax, epsil, stmin;
711
712 tmaxfd = 10.;
713 stemax = 0.1;
714 deemax = 0.1;
715 epsil = 0.001;
716 stmin = 0.001;
717
718// Active Air :
719 AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
720 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
721
722// Inactive air :
723
724 AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
725 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
726
727 AliMedium(2, "CARBON$ ", 2, 1, iSXFLD, sXMGMX,
728 tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
729
730 AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
731 tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
732
733 AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
734 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
735
736
737 AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
738 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
739
740 AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
741
742 gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
743 gMC->Gstpar(idtmed[3000], "HADR", 1.);
744 gMC->Gstpar(idtmed[3000], "DCAY", 1.);
745 gMC->Gstpar(idtmed[3000], "DRAY", 1.);
746
747 gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
748 gMC->Gstpar(idtmed[3001], "HADR", 1.);
749 gMC->Gstpar(idtmed[3001], "DCAY", 1.);
750 gMC->Gstpar(idtmed[3001], "DRAY", 1.);
751
752 gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
753 gMC->Gstpar(idtmed[3002], "HADR", 1.);
754 gMC->Gstpar(idtmed[3002], "DCAY", 1.);
755 gMC->Gstpar(idtmed[3002], "DRAY", 1.);
756 gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
757 gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
758
759 gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
760 gMC->Gstpar(idtmed[3003], "HADR", 1.);
761 gMC->Gstpar(idtmed[3003], "DCAY", 1.);
762 gMC->Gstpar(idtmed[3003], "DRAY", 1.);
763
764 gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
765 gMC->Gstpar(idtmed[3004], "HADR", 1.);
766 gMC->Gstpar(idtmed[3004], "DCAY", 1.);
767 gMC->Gstpar(idtmed[3004], "DRAY", 1.);
768 gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
769 gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
770
771 gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
772 gMC->Gstpar(idtmed[3005], "HADR", 1.);
773 gMC->Gstpar(idtmed[3005], "DCAY", 1.);
774 gMC->Gstpar(idtmed[3005], "DRAY", 1.);
775 gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
776 gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
777
778
779// geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
780// geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
781
782// gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
783// gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
784
785}
786
787//_____________________________________________________________________________
788void AliVZEROv3::DrawModule()
789{
790
791// Drawing is done in DrawVZERO.C
792
793 Int_t i;
794
795 printf("\n");
796 for(i=0;i<30;i++) printf("*");
797 printf(" VZERO DrawModule ");
798 for(i=0;i<30;i++) printf("*");
799 printf("\n");
800
801
802}
803
804//_____________________________________________________________________________
805void AliVZEROv3::Init()
806{
807// Initialises version 2 of the VZERO Detector
808// Just prints an information message
809
810 printf(" VZERO version %d initialized \n",IsVersion());
811
812// gMC->SetMaxStep(fMaxStepAlu);
813// gMC->SetMaxStep(fMaxStepQua);
814
815 AliVZERO::Init();
816
817}
818
819
820//_____________________________________________________________________________
821void AliVZEROv3::StepManager()
822{
823
824// Step Manager, called at each step
825
826 Int_t copy;
827 static Int_t vol[4];
828 static Float_t hits[21];
829 static Float_t eloss, tlength;
f9721da6 830 static Int_t nPhotonsInStep;
831 static Int_t nPhotons;
832 static Int_t numStep;
833 Float_t ringNumber;
834 Float_t destep, step;
835
836 numStep += 1;
837
838// We keep only charged tracks :
839
840 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
841
842 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
843 vol[2] = gMC->CurrentVolID(copy);
844 vol[3] = copy;
845
846 if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
847 gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
848 ringNumber = 1.0;
849 else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
850 gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
851 ringNumber = 2.0;
852 else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
853 gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
854 ringNumber = 3.0;
855 else
856 ringNumber = 0.0;
857
858 if ( ringNumber > 0.5 ) {
859
860 destep = gMC->Edep();
861 step = gMC->TrackStep();
862
863 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
864 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
865
866 eloss += destep;
867 tlength += step;
868
869 if ( gMC->IsTrackEntering() ) {
870
871 nPhotons = nPhotonsInStep;
872 gMC->TrackPosition(fTrackPosition);
873 gMC->TrackMomentum(fTrackMomentum);
874
875 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
876 fTrackMomentum.Py() * fTrackMomentum.Py() );
877
878 hits[0] = fTrackPosition.X();
879 hits[1] = fTrackPosition.Y();
880 hits[2] = fTrackPosition.Z();
881 hits[3] = Float_t (gMC->TrackPid());
882
883 hits[4] = gMC->TrackTime();
884 hits[5] = gMC->TrackCharge();
885 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
886 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
887 hits[8] = ringNumber;
888
889 hits[9] = pt;
890 hits[10] = fTrackMomentum.P();
891 hits[11] = fTrackMomentum.Px();
892 hits[12] = fTrackMomentum.Py();
893 hits[13] = fTrackMomentum.Pz();
894
895 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
896 hits[14] = par->Vx();
897 hits[15] = par->Vy();
898 hits[16] = par->Vz();
899
900 tlength = 0.0;
901 eloss = 0.0;
902
903 }
904
905 nPhotons = nPhotons + nPhotonsInStep;
906
907 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
908
909 nPhotons = nPhotons - Int_t( (Float_t(nPhotons) * fLightAttenuation * fnMeters) );
910 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot );
911
912 hits[17] = eloss;
913 hits[18] = tlength;
914 hits[19] = nPhotons;
915 hits[20] = GetCellId (vol, hits);
916
917 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
918
919 tlength = 0.0;
920 eloss = 0.0;
921 nPhotons = 0;
922 nPhotonsInStep = 0;
923
924 numStep = 0;
925 }
926 }
927
928}
929
930//_____________________________________________________________________________
931void AliVZEROv3::AddHit(Int_t track, Int_t *vol, Float_t *hits)
932{
933
934// Adds a VZERO hit
935
936 TClonesArray &lhits = *fHits;
937 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
938}
939
940//_____________________________________________________________________________
941void AliVZEROv3::AddDigits(Int_t *tracks, Int_t* digits)
942{
943
944// Adds a VZERO digit
945
946 TClonesArray &ldigits = *fDigits;
947 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
948}
949
950//_____________________________________________________________________________
951void AliVZEROv3::MakeBranch(Option_t *option)
952{
953
954// Creates new branches in the current Root Tree
955
956 char branchname[10];
957 sprintf(branchname,"%s",GetName());
958 printf(" fBufferSize = %d \n",fBufferSize);
959
960 const char *cH = strstr(option,"H");
961
962 if (fHits && TreeH() && cH) {
963 TreeH()->Branch(branchname,&fHits, fBufferSize);
964 printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
965 }
966
967 const char *cD = strstr(option,"D");
968
969 if (fDigits && fLoader->TreeD() && cD) {
970 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
971 printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
972 }
973
974}
975
976//_____________________________________________________________________________
977Int_t AliVZEROv3::GetCellId(Int_t *vol, Float_t *hits)
978{
979
980 // Returns Id of scintillator cell
981 // Right side from 0 to 35
982 // Left side from 36 to 71
983
984 Int_t index = vol[1];
985 fCellId = 0;
986
987 if (index < 10) index = index + 12;
988
989 if (hits[2] < 0.0) {
990 index = (index - 10) + ( ( Int_t(hits[8]) - 1 ) * 12);
991 fCellId = index;
992 }
993 else if (hits[2] > 0.0)
994 {
995 index = (index + 26) + ( ( Int_t(hits[8]) - 1 ) * 12);
996 fCellId = index;}
997
998 return fCellId;
999}