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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"
57
58ClassImp(AliVZEROv5)
59
60//_____________________________________________________________________________
61AliVZEROv5:: AliVZEROv5():AliVZERO()
62{
63// Standard default constructor
64}
65
66//_____________________________________________________________________________
67AliVZEROv5::AliVZEROv5(const char *name, const char *title):
68 AliVZERO(name,title)
69{
70
71// Standard constructor for V-zero Detector version 5
72
73 Int_t i;
74
75 printf("\n");
76 for(i=0;i<26;i++) printf("*");
77 printf(" Create VZERO object ");
78 for(i=0;i<26;i++) printf("*");
79 printf("\n");
80
81 fLightYield = 93.75; // Light yield in BC408 (93.75 eV per photon)
82 fLightAttenuation = 0.05; // Light attenuation in fiber (0.05 per meter)
83 fnMeters = 15.0; // Number of meters of clear fibers to PM
84 fFibToPhot = 0.3; // Attenuation at fiber-photocathode interface
85}
86
87//_____________________________________________________________________________
88void AliVZEROv5::CreateGeometry()
89{
90
91// Creates the GEANT geometry of the V-zero Detector version 5
92
93 Int_t i;
94
95 printf("\n");
96 for(i=0;i<26;i++) printf("*");
97 printf(" Create VZERO Geometry ");
98 for(i=0;i<26;i++) printf("*");
99 printf("\n");
100
101 Int_t *idtmed = fIdtmed->GetArray()-2999;
102
103 Int_t ndetR = 1;
104 Int_t ndetL = 1;
105
106 Int_t ncellsR = 1;
107 Int_t ncellsL = 1;
108
109 Int_t idrotm[999];
110
111 Float_t height1Right, height2Right, height3Right, height4Right;
112 Float_t heightRight;
113 Float_t theta;
114
115 Float_t halfThickQua;
116
117 Float_t zdet;
118 Float_t r0Right, r4Right, rBoxRight;
119 Float_t pi = TMath::Pi();
120
121 height1Right = 2.6; // height of cell 1, in cm
122 height2Right = 4.6; // height of cell 2, in cm
123 height3Right = 7.6; // height of cell 3, in cm
124 height4Right = 12.7; // height of cell 4, in cm
125
126 theta = pi/4.0/2.0; // half angular opening = 22.5 degrees
127
128 halfThickQua= fThickness1/2.0; // half thickness of elementary cell (inner ring)
129
130// distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
131// absorber nose sitting at 90 cm. Will use -zdet later...
132// size of V0R box (fThickness) is increased by 3 mm as compared to basic version
133
134 fThickness = fThickness + 0.3; // now 4.7 cm instead of 4.4 cm
135 zdet = 90.0 - 0.6 - fThickness/2.0; // distance to vertex (along Z axis)
136 r0Right = 4.20; // closest distance to center of the beam pipe
137 heightRight = height1Right + height2Right + height3Right + height4Right;
138 r4Right = r0Right + heightRight + 0.3;
139 rBoxRight = 38.0; // external radius of right box
140
141// Creation of mother volume v0LE - left part - :
142// Entrance face at +339.0 cm (new coordinate system) ...
143
144 Float_t partube[3];
145
146 partube[0] = 4.3;
147 partube[1] = 44.0;
148 partube[2] = fThickness1/2.0;
149
150 gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
151
152// Creation of five rings - left part - :
153// Entrance face at +339.0 cm (new coordinate system) ...
154
155// Mother volume v0L0 in which will be set 5 scintillator cells
156
157 Float_t partubs[5];
158
159 Float_t r0Left = 4.3;
160 Float_t height1Left = 3.3;
161 Float_t height2Left = 6.2;
162 Float_t height3Left = 8.9;
163 Float_t height4Left = 20.9;
164 Float_t heightLeft = height1Left + height2Left + height3Left + height4Left;
165
166 Float_t r4Left = r0Left + heightLeft;
167
168 partubs[0] = r0Left;
169 partubs[1] = r4Left;
170 partubs[2] = fThickness1/2.0;
171 partubs[3] = 90.0-22.5;
172 partubs[4] = 135.0-22.5;
173
174 gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5); // air volume
175
176 Float_t r1Left = r0Left + height1Left;
177
178 partubs[0] = r0Left;
179 partubs[1] = r1Left;
180
181 gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5); // quartz volume
182 gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
183
184 Float_t r2Left = r1Left + height2Left;
185
186 partubs[0] = r1Left;
187 partubs[1] = r2Left;
188
189 gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5); // quartz volume
190 gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
191
192 Float_t r3Left = r2Left + height3Left;
193
194 partubs[0] = r2Left;
195 partubs[1] = r3Left;
196
197 gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5); // quartz volume
198 gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
199
200 partubs[0] = r3Left;
201 partubs[1] = r4Left;
202
203 gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5); // quartz volume
204 gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
205
206// Creation of mother volume v0RI - right part - :
207
208 partube[0] = r0Right - 0.2;
209 partube[1] = r4Right + 1.0;
210 partube[2] = fThickness/2.0;
211
212 gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
213
214// Creation of carbon lids (3.0 mm thick) to keep v0RI box shut...
215
216 Float_t lidThickness = 0.30;
217
218 partube[0] = r0Right;
219 partube[1] = rBoxRight;
220 partube[2] = +lidThickness/2.0;
221
222 gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
223 gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
224 gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
225
226// Creation of aluminum rings 3.0 mm thick to maintain the v0RI pieces ...
227
228 partube[0] = r0Right;
229 partube[1] = r0Right + 0.3;
230 partube[2] = +fThickness/2.0;
231
232 gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
233 gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
234
235 partube[0] = rBoxRight - 0.3;
236 partube[1] = rBoxRight;
237 partube[2] = +fThickness/2.0;
238
239 gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
240 gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
241
242// Mother volume v0R0 in which will be set 6 scintillator cells
243
244 partubs[0] = r0Right;
245 partubs[1] = r4Right;
246 partubs[2] = fThickness/2.0;
247 partubs[3] = 90.0-22.5;
248 partubs[4] = 135.0-22.5;
249
250 gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5); // air volume
251
252// Elementary cell of ring 1 :
253// (cells of ring 1 will be shifted by 2.0 cm backwards to output fibers)
254
255 Float_t offsetFibers = 1.0;
256 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
257 Float_t r1Right = r0Right + 0.3 + height1Right;
258
259 partubs[0] = r0Right + 0.3;
260 partubs[1] = r1Right;
261 partubs[2] = fThickness1/2.0;
262
263 gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5); // scintillator volume
264 gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
265
266// Elementary cell of ring 2 :
267// (cells of ring 2 will be shifted by 1.0 cm backwards to output fibers)
268
269 Float_t r2Right = r1Right + height2Right;
270
271 partubs[0] = r1Right;
272 partubs[1] = r2Right;
273
274 gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5); // scintillator volume
275 gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
276
277// Elementary cell of ring 3 :
278
279 Float_t r3Right = r2Right + height3Right;
280
281 partubs[0] = r2Right;
282 partubs[1] = r3Right;
283 partubs[3] = 90.0-22.5;
284 partubs[4] = 112.5-22.5;
285
286 gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5); // scintillator volume
287 gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
288
289 partubs[3] = 112.5-22.5;
290 partubs[4] = 135.0-22.5;
291 gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5); // scintillator volume
292 gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
293
294// Elementary cell of ring 4 :
295
296 partubs[0] = r3Right;
297 partubs[1] = r4Right;
298 partubs[3] = 90.0-22.5;
299 partubs[4] = 112.5-22.5;
300
301 gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5); // scintillator volume
302 gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
303
304 partubs[3] = 112.5-22.5;
305 partubs[4] = 135.0-22.5;
306 gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5); // scintillator volume
307 gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
308
309 Float_t phiDeg = 180./4.;
310
311// Right part :
312
313 for(Float_t phi = 22.5; phi < 360.0; phi = phi + phiDeg)
314 {
315 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
316 gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
317 0.0,0.0,idrotm[902],"ONLY");
318 ndetR++;
319 }
320
321 gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
322
323 ncellsR = (ndetR - 1) * 6;
324 printf(" Number of cells on Right side = %d\n", ncellsR);
325
326// Left part :
327
328 for(Float_t phi = 22.5; phi < 360.0; phi = phi + phiDeg)
329 {
330 AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
331 gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
332 0.0,0.0,idrotm[902],"ONLY");
333 ndetL++;
334 }
335
336 gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,339.0+fThickness1/2.0,0,"ONLY");
337
338 ncellsL = (ndetL - 1) * 4;
339 printf(" Number of cells on Left side = %d\n", ncellsL);
340 for(i=0;i<75;i++) printf("*");
341 printf("\n");
342
343}
344
345//_____________________________________________________________________________
346void AliVZEROv5::BuildGeometry()
347{
348
349// Builds simple ROOT TNode geometry for event display
350
351 Int_t i;
352
353 printf("\n");
354 for(i=0;i<30;i++) printf("*");
355 printf(" VZERO BuildGeometry ");
356 for(i=0;i<30;i++) printf("*");
357 printf("\n");
358
359 TNode *top;
360
361 TNode *v0Rnode, *v0Rnode0, *v0Rnode7, *v0Rnode8, *v0Rnode9, *v0Rnode10;
362 TNode *v0Rnode1, *v0Rnode2, *v0Rnode3, *v0Rnode4, *v0Rnode5, *v0Rnode6;
363 TNode *v0Lnode, *v0Lnode0;
364 TNode *v0Lnode1, *v0Lnode2, *v0Lnode3, *v0Lnode4;
365
366 const int kColorVZERO = kGreen;
367
368 top = gAlice->GetGeometry()->GetNode("alice");
369
370 Float_t height1Right, height2Right, height3Right, height4Right;
371 Float_t heightRight;
372 Float_t theta;
373
374 Float_t halfThickQua;
375 Float_t zdet;
376 Float_t r0Right, r4Right, rBoxRight;
377 Float_t pi = TMath::Pi();
378
379 height1Right = 2.6; // height of cell 1, in cm
380 height2Right = 4.6; // height of cell 2, in cm
381 height3Right = 7.6; // height of cell 3, in cm
382 height4Right = 12.7; // height of cell 4, in cm
383
384 theta = pi/4.0/2.0;
385
386 halfThickQua = fThickness1/2.0;
387
388 zdet = 90.0 - 0.6 - fThickness/2.0;
389 r0Right = 4.20;
390 heightRight = height1Right + height2Right + height3Right + height4Right;
391 r4Right = r0Right + heightRight + 0.3;
392 rBoxRight = 38.0;
393
394 Int_t ndiv = 1;
395
396 Float_t partube[3];
397
398 partube[0] = r0Right - 0.2;
399 partube[1] = r4Right + 1.0;
400 partube[2] = fThickness/2.0;
401
402 TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
403
404 top->cd();
405
406 v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
407
408 v0Rnode->SetLineColor(kYellow);
409 fNodes->Add(v0Rnode);
410 v0Rnode->SetVisibility(2);
411
412// Rondelles de carbone (epaisseur 3.0 mm) de maintien des cellules ...
413
414 Float_t lidThickness = 0.30;
415
416 partube[0] = r0Right;
417 partube[1] = rBoxRight;
418 partube[2] = +lidThickness/2.0;
419
420 TTUBE *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
421
422 v0Rnode->cd();
423 v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);
424 v0Rnode7->SetLineColor(kYellow);
425 fNodes->Add(v0Rnode7);
426 v0Rnode->cd();
427 v0Rnode8 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
428 v0Rnode8->SetLineColor(kYellow);
429 fNodes->Add(v0Rnode8);
430
431 partube[0] = r0Right;
432 partube[1] = r0Right + 0.3;
433 partube[2] = +fThickness/2.0;
434
435 TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
436
437 v0Rnode->cd();
438 v0Rnode9 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
439 v0Rnode9->SetLineColor(kYellow);
440 fNodes->Add(v0Rnode9);
441
442 partube[0] = rBoxRight - 0.3;
443 partube[1] = rBoxRight;
444 partube[2] = +fThickness/2.0;
445
446 TTUBE *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
447
448 v0Rnode->cd();
449 v0Rnode10 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
450 v0Rnode10->SetLineColor(kYellow);
451 fNodes->Add(v0Rnode10);
452
453 Float_t partubs[5];
454
455 partubs[0] = r0Right;
456 partubs[1] = r4Right;
457 partubs[2] = fThickness/2.0;
458 partubs[3] = 90.0-22.5;
459 partubs[4] = 135.0-22.5;
460
461 TTUBS *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
462 partubs[3], partubs[4]);
463
464 v0R0->SetNumberOfDivisions(ndiv);
465
466 Float_t r1Right = r0Right + 0.3 + height1Right;
467 Float_t offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
468 Float_t offsetFibers = 1.0;
469
470 partubs[0] = r0Right + 0.3;
471 partubs[1] = r1Right;
472 partubs[2] = fThickness1/2.0;
473
474 TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
475 partubs[3], partubs[4]);
476
477 v0R1->SetNumberOfDivisions(ndiv);
478
479 Float_t r2Right = r1Right + height2Right;
480
481 partubs[0] = r1Right;
482 partubs[1] = r2Right;
483
484 TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
485 partubs[3], partubs[4]);
486
487 v0R2->SetNumberOfDivisions(ndiv);
488
489// Ring 3 :
490
491 Float_t r3Right = r2Right + height3Right;
492
493 partubs[0] = r2Right;
494 partubs[1] = r3Right;
495 partubs[3] = 90.0-22.5;
496 partubs[4] = 112.5-22.5;
497
498 TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
499 partubs[3], partubs[4]);
500 v0R3->SetNumberOfDivisions(ndiv);
501
502 partubs[3] = 112.5-22.5;
503 partubs[4] = 135.0-22.5;
504
505 TTUBS *v0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
506 partubs[3], partubs[4]);
507 v0R4->SetNumberOfDivisions(ndiv);
508
509// Ring 4 :
510
511 partubs[0] = r3Right;
512 partubs[1] = r4Right;
513 partubs[3] = 90.0-22.5;
514 partubs[4] = 112.5-22.5;
515
516 TTUBS *v0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
517 partubs[3], partubs[4]);
518 v0R5->SetNumberOfDivisions(ndiv);
519
520 partubs[3] = 112.5-22.5;
521 partubs[4] = 135.0-22.5;
522
523 TTUBS *v0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
524 partubs[3], partubs[4]);
525 v0R6->SetNumberOfDivisions(ndiv);
526
527 Float_t phi;
528 Float_t phiDeg= 180./4.;
529
530 Int_t ndetR = 1;
531
532 char nameNode[12];
533
534 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
535
536 {
537 TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
538
539 sprintf(nameNode,"SUBDER%d",ndetR);
540
541 v0Rnode->cd();
542 v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);
543 v0Rnode0->SetLineColor(kYellow);
544 fNodes->Add(v0Rnode0);
545 ndetR++;
546
547 sprintf(nameNode,"SUBDER%d",ndetR);
548 v0Rnode0->cd();
549 v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset ,0);
550 v0Rnode1->SetLineColor(kColorVZERO);
551 fNodes->Add(v0Rnode1);
552 ndetR++;
553
554 sprintf(nameNode,"SUBDER%d",ndetR);
555 v0Rnode0->cd();
556 v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset + offsetFibers,0);
557 v0Rnode2->SetLineColor(kColorVZERO);
558 fNodes->Add(v0Rnode2);
559 ndetR++;
560
561 sprintf(nameNode,"SUBDER%d",ndetR);
562 v0Rnode0->cd();
563 v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset + 2.0*offsetFibers,0);
564 v0Rnode3->SetLineColor(kColorVZERO);
565 fNodes->Add(v0Rnode3);
566 ndetR++;
567
568 sprintf(nameNode,"SUBDER%d",ndetR);
569 v0Rnode0->cd();
570 v0Rnode4 = new TNode(nameNode,nameNode,v0R4,0.0,0.0, -offset + 2.0*offsetFibers,0);
571 v0Rnode4->SetLineColor(kColorVZERO);
572 fNodes->Add(v0Rnode4);
573 ndetR++;
574
575 sprintf(nameNode,"SUBDER%d",ndetR);
576 v0Rnode0->cd();
577 v0Rnode5 = new TNode(nameNode,nameNode,v0R5,0.0,0.0, -offset + 2.0*offsetFibers,0);
578 v0Rnode5->SetLineColor(kColorVZERO);
579 fNodes->Add(v0Rnode5);
580 ndetR++;
581
582 sprintf(nameNode,"SUBDER%d",ndetR);
583 v0Rnode0->cd();
584 v0Rnode6 = new TNode(nameNode,nameNode,v0R6,0.0,0.0, -offset + 2.0*offsetFibers,0);
585 v0Rnode6->SetLineColor(kColorVZERO);
586 fNodes->Add(v0Rnode6);
587 ndetR++;
588
589 v0Rnode0->SetVisibility(2);
590 }
591
592// Left side of VZERO :
593
594 Float_t r0Left = 4.3;
595 Float_t height1Left = 3.3;
596 Float_t height2Left = 6.2;
597 Float_t height3Left = 8.9;
598 Float_t height4Left = 20.9;
599 Float_t heightLeft = height1Left + height2Left + height3Left + height4Left;
600
601 Float_t r4Left = r0Left + heightLeft;
602
603 partube[0] = r0Left;
604 partube[1] = r4Left;
605 partube[2] = fThickness1/2.0;
606
607 TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
608
609 top->cd();
610
611 v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,339.0+fThickness1/2.0,0);
612
613 v0Lnode->SetLineColor(kBlue);
614 fNodes->Add(v0Lnode);
615
616 v0Lnode->SetVisibility(2);
617
618 partubs[0] = r0Left;
619 partubs[1] = r4Left;
620 partubs[2] = fThickness1/2.0;
621 partubs[3] = 90.0-22.5;
622 partubs[4] = 135.0-22.5;
623
624 TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
625 partubs[3], partubs[4]);
626
627 v0L0->SetNumberOfDivisions(ndiv);
628 v0L0->SetLineColor(7);
629
630 Float_t offsetLeft;
631 offsetLeft = - fThickness1/2.0;
632
633 Float_t r1Left = r0Left + height1Left;
634
635 partubs[0] = r0Left;
636 partubs[1] = r1Left;
637
638 TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
639 partubs[3], partubs[4]);
640 v0L1->SetNumberOfDivisions(ndiv);
641
642 Float_t r2Left = r1Left + height2Left;
643
644 partubs[0] = r1Left;
645 partubs[1] = r2Left;
646
647 TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
648 partubs[3], partubs[4]);
649 v0L2->SetNumberOfDivisions(ndiv);
650
651 Float_t r3Left = r2Left + height3Left;
652
653 partubs[0] = r2Left;
654 partubs[1] = r3Left;
655
656 TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
657 partubs[3], partubs[4]);
658 v0L3->SetNumberOfDivisions(ndiv);
659
660 partubs[0] = r3Left;
661 partubs[1] = r4Left;
662
663 TTUBS *v0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
664 partubs[3], partubs[4]);
665 v0L4->SetNumberOfDivisions(ndiv);
666
667 Int_t ndetL = 1;
668
669 for (phi = 22.5; phi < 360.0; phi = phi + phiDeg)
670
671 {
672
673 TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
674
675 sprintf(nameNode,"SUBDEL%d",ndetL);
676
677 v0Lnode->cd();
678 v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);
679 v0Lnode0->SetLineColor(kColorVZERO);
680 fNodes->Add(v0Lnode0);
681 ndetL++;
682
683 sprintf(nameNode,"SUBDEL%d",ndetL);
684 v0Lnode0->cd();
685 v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);
686 v0Lnode1->SetLineColor(kColorVZERO);
687 fNodes->Add(v0Lnode1);
688 ndetL++;
689
690 sprintf(nameNode,"SUBDEL%d",ndetL);
691 v0Lnode0->cd();
692 v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);
693 v0Lnode2->SetLineColor(kColorVZERO);
694 fNodes->Add(v0Lnode2);
695 ndetL++;
696
697 sprintf(nameNode,"SUBDEL%d",ndetL);
698 v0Lnode0->cd();
699 v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);
700 v0Lnode3->SetLineColor(kColorVZERO);
701 fNodes->Add(v0Lnode3);
702 ndetL++;
703
704 sprintf(nameNode,"SUBDEL%d",ndetL);
705 v0Lnode0->cd();
706 v0Lnode4 = new TNode(nameNode,nameNode,v0L4,0.0,0.0, 0.0,0);
707 v0Lnode4->SetLineColor(kColorVZERO);
708 fNodes->Add(v0Lnode4);
709 ndetL++;
710
711 v0Lnode0->SetVisibility(2);
712 }
713}
714
715//_____________________________________________________________________________
716void AliVZEROv5::CreateMaterials()
717{
718
719// Creates materials used for geometry
720
721 Int_t i;
722
723 printf("\n");
724 for(i=0;i<25;i++) printf("*");
725 printf(" VZERO create materials ");
726 for(i=0;i<26;i++) printf("*");
727 printf("\n");
728
729/*
730 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,
731 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
732
733
734 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,
735 6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
736
737 Float_t rindex_quarz[14] = { 1.52398, 1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
738 1.57488, 1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
739 1.662295, 1.68337 };
740
741 Float_t absco_quarz[14] = { 105.8, 45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
742 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
743
744 Float_t effic_all[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
745
746
747 Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
748
749
750 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,
751 1e-4,1e-4,1e-4,1e-4 };
752 Float_t effic_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
753
754*/
755
756 Int_t *idtmed = fIdtmed->GetArray()-2999;
757
f4f76f65 758
759// Parameters related to Quarz (SiO2) :
760
761 Float_t aqua[2], zqua[2], densqua, wmatqua[2];
762 Int_t nlmatqua;
763
764 aqua[0] = 28.09;
765 aqua[1] = 16.;
766 zqua[0] = 14.;
767 zqua[1] = 8.;
768 densqua = 2.64;
769 nlmatqua = -2;
770 wmatqua[0] = 1.;
771 wmatqua[1] = 2.;
772
773// Parameters related to aluminum sheets :
774
775 Float_t aal = 26.98;
776 Float_t zal = 13.00;
777 Float_t densal= 2.7;
778 Float_t radlal= 8.9;
779
780// Parameters related to scintillator CH :
781
782 Float_t ascin[2] = {1.00794,12.011};
783 Float_t zscin[2] = {1.,6.};
784 Float_t wscin[2] = {1.,1.};
785 Float_t denscin = 1.032;
786
b84cd1d5 787// AIR
788
789 Float_t aAir[4]={12.,14.,16.,36.};
790 Float_t zAir[4]={6.,7.,8.,18.};
791 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
792 Float_t dAir = 1.20479E-3;
793
f4f76f65 794// Definition of materials :
795
b84cd1d5 796 AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
797 AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
f4f76f65 798 AliMaterial( 2, "CARBON$" , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
799 AliMixture( 3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
800 AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
801 AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
802
803 AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
804
805
806 Int_t iSXFLD = gAlice->Field()->Integ();
807 Float_t sXMGMX = gAlice->Field()->Max();
808
809 Float_t tmaxfd, stemax, deemax, epsil, stmin;
810
811 tmaxfd = 10.;
812 stemax = 0.1;
813 deemax = 0.1;
814 epsil = 0.001;
815 stmin = 0.001;
816
817// Active Air :
818 AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
819 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
820
821// Inactive air :
822
823 AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
824 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
825
826 AliMedium(2, "CARBON$ ", 2, 1, iSXFLD, sXMGMX,
827 tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
828
829 AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
830 tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
831
832 AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
833 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
834
835
836 AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
837 tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
838
839 AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
840
841 gMC->Gstpar(idtmed[3000], "LOSS", 1.); // [3000] = air ACTIF [3010] = air INACTIF
842 gMC->Gstpar(idtmed[3000], "HADR", 1.);
843 gMC->Gstpar(idtmed[3000], "DCAY", 1.);
844 gMC->Gstpar(idtmed[3000], "DRAY", 1.);
845
846 gMC->Gstpar(idtmed[3001], "LOSS", 1.); // [3001] = carbon
847 gMC->Gstpar(idtmed[3001], "HADR", 1.);
848 gMC->Gstpar(idtmed[3001], "DCAY", 1.);
849 gMC->Gstpar(idtmed[3001], "DRAY", 1.);
850
851 gMC->Gstpar(idtmed[3002], "LOSS", 1.); // [3002] = quartz
852 gMC->Gstpar(idtmed[3002], "HADR", 1.);
853 gMC->Gstpar(idtmed[3002], "DCAY", 1.);
854 gMC->Gstpar(idtmed[3002], "DRAY", 1.);
855 gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
856 gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
857
858 gMC->Gstpar(idtmed[3003], "LOSS", 1.); // [3003] = normal aluminum
859 gMC->Gstpar(idtmed[3003], "HADR", 1.);
860 gMC->Gstpar(idtmed[3003], "DCAY", 1.);
861 gMC->Gstpar(idtmed[3003], "DRAY", 1.);
862
863 gMC->Gstpar(idtmed[3004], "LOSS", 1.); // [3004] = reflecting aluminum
864 gMC->Gstpar(idtmed[3004], "HADR", 1.);
865 gMC->Gstpar(idtmed[3004], "DCAY", 1.);
866 gMC->Gstpar(idtmed[3004], "DRAY", 1.);
867 gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
868 gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
869
870 gMC->Gstpar(idtmed[3005], "LOSS", 1.); // [3005] = scintillator
871 gMC->Gstpar(idtmed[3005], "HADR", 1.);
872 gMC->Gstpar(idtmed[3005], "DCAY", 1.);
873 gMC->Gstpar(idtmed[3005], "DRAY", 1.);
874 gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
875 gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
876
877
878// geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
879// geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
880
881// gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
882// gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
883
884}
885
886//_____________________________________________________________________________
ba380e33 887void AliVZEROv5::DrawModule() const
f4f76f65 888{
889
890// Drawing is done in DrawVZERO.C
891
892 Int_t i;
893
894 printf("\n");
895 for(i=0;i<30;i++) printf("*");
896 printf(" VZERO DrawModule ");
897 for(i=0;i<30;i++) printf("*");
898 printf("\n");
899}
900
901//_____________________________________________________________________________
902void AliVZEROv5::Init()
903{
904// Initialises version 2 of the VZERO Detector
905// Just prints an information message
906
907 printf(" VZERO version %d initialized \n",IsVersion());
908
909// gMC->SetMaxStep(fMaxStepAlu);
910// gMC->SetMaxStep(fMaxStepQua);
911
912 AliVZERO::Init();
913}
914
915//_____________________________________________________________________________
916void AliVZEROv5::StepManager()
917{
918
919// Step Manager, called at each step
920
921 Int_t copy;
922 static Int_t vol[4];
923 static Float_t hits[21];
924 static Float_t eloss, tlength;
925 static Int_t nPhotonsInStep;
926 static Int_t nPhotons;
927 static Int_t numStep;
928 Float_t ringNumber;
929 Float_t destep, step;
930
931 numStep += 1;
932
933// We keep only charged tracks :
934
935 if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
936
937 vol[0] = gMC->CurrentVolOffID(1, vol[1]);
938 vol[2] = gMC->CurrentVolID(copy);
939 vol[3] = copy;
940
d6fb41ac 941 static Int_t idV0R1 = gMC->VolId("V0R1");
942 static Int_t idV0L1 = gMC->VolId("V0L1");
943 static Int_t idV0R2 = gMC->VolId("V0R2");
944 static Int_t idV0L2 = gMC->VolId("V0L2");
945 static Int_t idV0R3 = gMC->VolId("V0R3");
946 static Int_t idV0L3 = gMC->VolId("V0L3");
947 static Int_t idV0R4 = gMC->VolId("V0R4");
948 static Int_t idV0L4 = gMC->VolId("V0L4");
949 static Int_t idV0R5 = gMC->VolId("V0R5");
950 static Int_t idV0R6 = gMC->VolId("V0R6");
951
952 if ( gMC->CurrentVolID(copy) == idV0R1 ||
953 gMC->CurrentVolID(copy) == idV0L1 )
f4f76f65 954 ringNumber = 1.0;
d6fb41ac 955 else if ( gMC->CurrentVolID(copy) == idV0R2 ||
956 gMC->CurrentVolID(copy) == idV0L2 )
f4f76f65 957 ringNumber = 2.0;
d6fb41ac 958 else if ( gMC->CurrentVolID(copy) == idV0R3 ||
959 gMC->CurrentVolID(copy) == idV0R4 ||
960 gMC->CurrentVolID(copy) == idV0L3 )
f4f76f65 961 ringNumber = 3.0;
d6fb41ac 962 else if ( gMC->CurrentVolID(copy) == idV0R5 ||
963 gMC->CurrentVolID(copy) == idV0R6 ||
964 gMC->CurrentVolID(copy) == idV0L4 )
f4f76f65 965 ringNumber = 4.0;
966 else
967 ringNumber = 0.0;
968
969 if ( ringNumber > 0.5 ) {
970
971 destep = gMC->Edep();
972 step = gMC->TrackStep();
973
974 nPhotonsInStep = Int_t(destep / (fLightYield *1e-9) );
975 nPhotonsInStep = gRandom->Poisson(nPhotonsInStep);
976
977 eloss += destep;
978 tlength += step;
979
980 if ( gMC->IsTrackEntering() ) {
981
982 nPhotons = nPhotonsInStep;
983 gMC->TrackPosition(fTrackPosition);
984 gMC->TrackMomentum(fTrackMomentum);
985
986 Float_t pt = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
987 fTrackMomentum.Py() * fTrackMomentum.Py() );
988
989 hits[0] = fTrackPosition.X();
990 hits[1] = fTrackPosition.Y();
991 hits[2] = fTrackPosition.Z();
992 hits[3] = Float_t (gMC->TrackPid());
993
994 hits[4] = gMC->TrackTime();
995 hits[5] = gMC->TrackCharge();
996 hits[6] = fTrackMomentum.Theta()*TMath::RadToDeg();
997 hits[7] = fTrackMomentum.Phi()*TMath::RadToDeg();
998 hits[8] = ringNumber;
999
1000 hits[9] = pt;
1001 hits[10] = fTrackMomentum.P();
1002 hits[11] = fTrackMomentum.Px();
1003 hits[12] = fTrackMomentum.Py();
1004 hits[13] = fTrackMomentum.Pz();
1005
1006 TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
1007 hits[14] = par->Vx();
1008 hits[15] = par->Vy();
1009 hits[16] = par->Vz();
1010
1011 tlength = 0.0;
1012 eloss = 0.0;
1013 }
1014
1015 nPhotons = nPhotons + nPhotonsInStep;
1016
1017 if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1018
1019 nPhotons = nPhotons - Int_t((Float_t(nPhotons) * fLightAttenuation * fnMeters));
1020 nPhotons = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot);
1021
1022 hits[17] = eloss;
1023 hits[18] = tlength;
1024 hits[19] = nPhotons;
1025 hits[20] = GetCellId (vol, hits);
1026
1027 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1028
1029 tlength = 0.0;
1030 eloss = 0.0;
1031 nPhotons = 0;
1032 nPhotonsInStep = 0;
1033
1034 numStep = 0;
1035 }
1036 }
1037
1038}
1039
1040//_____________________________________________________________________________
1041void AliVZEROv5::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1042{
1043
1044// Adds a VZERO hit
1045
1046 TClonesArray &lhits = *fHits;
1047 new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1048}
1049
1050//_____________________________________________________________________________
1051void AliVZEROv5::AddDigits(Int_t *tracks, Int_t* digits)
1052{
1053
1054// Adds a VZERO digit
1055
1056 TClonesArray &ldigits = *fDigits;
1057 new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1058}
1059
1060//_____________________________________________________________________________
1061void AliVZEROv5::MakeBranch(Option_t *option)
1062{
1063
1064// Creates new branches in the current Root Tree
1065
1066 char branchname[10];
1067 sprintf(branchname,"%s",GetName());
1068 printf(" fBufferSize = %d \n",fBufferSize);
1069
1070 const char *cH = strstr(option,"H");
1071
1072 if (fHits && TreeH() && cH) {
1073 TreeH()->Branch(branchname,&fHits, fBufferSize);
1074 printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1075 }
1076
1077 const char *cD = strstr(option,"D");
1078
1079 if (fDigits && fLoader->TreeD() && cD) {
1080 fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1081 printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1082 }
1083
1084}
1085
1086//_____________________________________________________________________________
1087Int_t AliVZEROv5::GetCellId(Int_t *vol, Float_t *hits)
1088{
1089
1090 // Returns Id of scintillator cell
1091 // Right side from 0 to 47
1092 // Left side from 48 to 95
1093
1094 // hits[8] = ring number (1 to 4)
1095 // vol[1] = copy number (1 to 8)
1096
1097 Int_t index = vol[1];
1098 Int_t RingNumber = Int_t(hits[8]);
1099 fCellId = 0;
1100
1101// cout << "volID = " << vol[0] << " copy = " << vol[1] << endl;
1102// cout << "X = " << hits[0] << " Y = " << hits[1] << endl;
1103
1104 Float_t phi = Float_t(TMath::ATan2(Double_t(hits[1]),Double_t(hits[0])) );
1105 Float_t kRaddeg = 180.0/TMath::Pi();
1106 phi = kRaddeg * phi;
1107
1108 if (index < 7) index = index + 8;
1109
1110 if (hits[2] < 0.0) {
1111 if(RingNumber < 3) {
1112 index = (index - 7) + ( ( RingNumber - 1 ) * 8);}
1113 else if(RingNumber >= 3){
1114 if(gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R3")||
1115 gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R5") )
1116 {index = (index*2 - 14) + ( ( RingNumber - 2 ) * 16); }
1117 if(gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R4")||
1118 gMC->CurrentVolID(vol[1]) == gMC->VolId("V0R6") )
1119 {index = (index*2 - 13) + ( ( RingNumber - 2 ) * 16); }
1120 }
1121 fCellId = index;
1122 }
1123
1124 else if (hits[2] > 0.0){
1125 index = (index - 7 + 48) + ( ( RingNumber - 1 ) * 8);
1126 fCellId = index;}
1127
1128// cout << " ring = " << RingNumber << " phi = "<< phi << endl;
1129// cout << " cellID = " << fCellId << endl;
1130// cout << "**********" << endl;
1131
1132 return fCellId;
1133
1134
1135}