2708e2d8e3ee431966ac1676d6e450f712d16da4
[u/mrichter/AliRoot.git] / VZERO / AliVZEROv2.cxx
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 2  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 november 2002                          //
24 //  (circular instead of trapezoidal shapes as in previous versions //
25 //   plus changes in cell dimensions and offsets)                   // 
26 //   New coordinate system implemented in october 2003              //
27 //                                                                  //
28 //////////////////////////////////////////////////////////////////////
29
30 // --- Standard libraries ---
31 #include <Riostream.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35 // --- ROOT libraries ---
36 #include <TClonesArray.h>
37 #include <TGeant3.h>
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 "AliConst.h"
50 #include "AliMagF.h"
51 #include "AliVZEROLoader.h"
52 #include "AliVZEROdigit.h"
53 #include "AliVZEROhit.h"
54 #include "AliVZEROv2.h"
55 #include "AliMC.h"
56
57 ClassImp(AliVZEROv2)
58
59 //--------------------------------------------------------------------
60 AliVZEROv2:: AliVZEROv2():AliVZERO()
61 {
62 // Standard default constructor 
63 }
64 //--------------------------------------------------------------------
65 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
66  AliVZERO(name,title)
67 {
68
69 // Standard constructor for V-zero Detector  version 2
70
71   Int_t i;
72
73   printf("\n");
74   for(i=0;i<26;i++) printf("*");
75   printf(" Create VZERO object ");
76   for(i=0;i<26;i++) printf("*");
77   printf("\n");
78   
79 }
80
81 //-------------------------------------------------------------------------
82 void AliVZEROv2::CreateGeometry()
83 {
84
85 // Creates the GEANT geometry of the V-zero Detector  version 2
86   
87   Int_t i;
88   
89   printf("\n");
90   for(i=0;i<26;i++) printf("*");
91   printf(" Create VZERO Geometry ");
92   for(i=0;i<26;i++) printf("*");
93   printf("\n");
94       
95   Int_t    *idtmed = fIdtmed->GetArray()-2999;
96
97   Int_t    ndetR = 1;
98   Int_t    ndetL = 1;
99  
100   Int_t    ncellsR = 1;
101   Int_t    ncellsL = 1;
102   
103   Int_t    idrotm[999];
104  
105   Float_t  height1, height2, height3, height4, height5; 
106   Float_t  height;
107   Float_t  theta;  
108   
109   Float_t  halfThickQua;
110   
111   Float_t  zdet;
112   Float_t  r0, r5;
113   Float_t  pi = TMath::Pi();
114     
115   height1           =     1.82;           // height of cell 1, in cm
116   height2           =     3.81;           // height of cell 2, in cm
117   height3           =     4.72;           // height of cell 3, in cm
118   height4           =     7.12;           // height of cell 4, in cm
119   height5           =    10.83;           // height of cell 5, in cm
120   
121   theta             = pi/6.0/2.0;       // half angular opening = 15 degrees
122     
123   halfThickQua    = fThickness1/2.0;   // half thickness of elementary cell (inner ring)
124     
125   zdet              =    90.0 - 0.6 -fThickness/2.0;  // distance to vertex (along Z axis)
126   r0                =    4.05;            // closest distance to center of the beam pipe
127   height            =    height1 + height2 + height3 + height4 + height5;
128   r5                =    r0 + height;
129
130 // Creation of mother volume v0LE - left part - :
131 // Entrance face at  +350.0 cm  (new coordinate system) ...
132
133    Float_t   partube[3];
134    
135    partube[0] =  4.3;
136    partube[1] = 45.0;
137    partube[2] = fThickness1/2.0;   
138     
139    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
140      
141 // Creation of five rings - left part - :
142 // Entrance face at +350.0 cm  (new coordinate system) ... 
143
144 // Mother volume v0L0 in which will be set 5 scintillator cells 
145
146   Float_t   partubs[5];  
147     
148   Float_t   r0Left      =   4.3;   
149   Float_t   height1Left =   2.6; 
150   Float_t   height2Left =   4.1;
151   Float_t   height3Left =   6.4;
152   Float_t   height4Left =  10.2;
153   Float_t   height5Left =  16.9;
154   Float_t   heightLeft  = height1Left + height2Left + height3Left 
155                                       + height4Left + height5Left;
156   Float_t   r5Left      = r0Left  + heightLeft; 
157   
158   partubs[0]      =  r0Left;
159   partubs[1]      =  r5Left;
160   partubs[2]      =  fThickness1/2.0;
161   partubs[3]      =  90.0-15.0;
162   partubs[4]      = 120.0-15.0;
163
164   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
165   
166   Float_t  r1Left =  r0Left + height1Left;        
167      
168   partubs[0]     =  r0Left;
169   partubs[1]     =  r1Left;
170
171   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
172   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY"); 
173
174   Float_t   r2Left  =   r1Left + height2Left;       
175   
176   partubs[0]     =  r1Left;
177   partubs[1]     =  r2Left;
178
179   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
180   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY"); 
181   
182   Float_t   r3Left =   r2Left + height3Left;
183    
184   partubs[0]     =  r2Left;
185   partubs[1]     =  r3Left;
186
187   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
188   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
189   
190   Float_t   r4Left =  r3Left + height4Left;
191    
192   partubs[0]     =  r3Left;
193   partubs[1]     =  r4Left;
194
195   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
196   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
197
198   partubs[0]     =  r4Left;
199   partubs[1]     =  r5Left;
200   partubs[3]     =  90.0-15.0;
201   partubs[4]     = 120.0-30.0;
202   
203   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
204   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
205   
206   partubs[3]     = 120.0-30.0;
207   partubs[4]     = 120.0-15.0;
208   
209   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
210   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
211   
212
213 // Creation of mother volume v0RI - right part - :
214   
215   partube[0] = r0 - 0.2;
216   partube[1] = r5 + 1.0;
217   partube[2] = fThickness/2.0; 
218       
219   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
220   
221 // Creation of  carbon lids (3 mm thick) to keep v0RI box shut...
222  
223   partube[0] =   r0;
224   partube[1] =   r5;
225   partube[2] =   +0.3/2.0;
226     
227   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3); 
228   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
229   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
230   
231 // Creation of aluminum rings to maintain the v0RI pieces ...
232
233   partube[0] =   r0 - 0.2;
234   partube[1] =   r0;
235   partube[2] =   +fThickness/2.0;
236    
237   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);    
238   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
239
240   partube[0] =   r5;
241   partube[1] =   r5 + 1.0;
242   partube[2] =   +fThickness/2.0;
243  
244   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);    
245   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
246   
247 // Mother volume v0R0 in which will be set 5  scintillator cells 
248   
249   partubs[0]      =  r0;
250   partubs[1]      =  r5;
251   partubs[2]      =  fThickness/2.0;
252   partubs[3]      =  90.0-15.0;
253   partubs[4]      = 120.0-15.0;
254
255   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume 
256
257 // Elementary cell of ring 1 :
258 // (the cells will be shifted by 3 mm to output fibers) 
259    
260   Float_t   offsetFibers =  0.7;
261   Float_t   offset        =  fThickness/2.0 - 0.3 - fThickness1/2.0; 
262   Float_t   r1            =  r0 + height1;
263       
264   partubs[0]     =  r0;
265   partubs[1]     =  r1;
266   partubs[2]     =  fThickness1/2.0;
267   
268   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
269   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY"); 
270
271 // Elementary cell of ring 2 :
272
273   Float_t   r2   =  r1 + height2;       
274   
275   partubs[0]     =  r1;
276   partubs[1]     =  r2;
277
278   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
279   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY"); 
280
281
282 // Elementary cell of ring 3 :
283   
284   Float_t   r3   =  r2 + height3;
285    
286   partubs[0]     =  r2;
287   partubs[1]     =  r3;
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 // Elementary cell of ring 4 :
293   
294   Float_t   r4   =  r3 + height4 ;
295   
296   partubs[0]     =  r3;
297   partubs[1]     =  r4;
298
299   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
300   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  -offset + 3.0 * offsetFibers, 0,"ONLY");
301
302 // Elementary cells of ring 5 :
303
304   partubs[0]     =  r4;
305   partubs[1]     =  r5;
306   partubs[3]     =  90.0-15.0;
307   partubs[4]     = 120.0-30.0;
308   
309   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
310   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 4.0 * offsetFibers, 0,"ONLY");  
311
312   partubs[3]     = 120.0-30.0;
313   partubs[4]     = 120.0-15.0;
314   
315   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
316   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  -offset + 4.0 * offsetFibers, 0,"ONLY");
317    
318   Float_t  phiDeg = 180./6.; 
319
320 // Right part : 
321  
322   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phiDeg)
323       {        
324         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
325         gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
326                           0.0,0.0,idrotm[902],"ONLY");
327         ndetR++;
328        }
329
330   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
331  
332   ncellsR = (ndetR - 1) * 6;  
333   printf("    Number of cells on Right side =   %d\n",  ncellsR);    
334
335 // Left part :
336
337   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phiDeg)
338       {       
339         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
340         gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
341                           0.0,0.0,idrotm[902],"ONLY");
342         ndetL++;
343        }
344
345   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
346  
347   ncellsL = (ndetL - 1) * 6;
348   printf("    Number of cells on Left side  =   %d\n",  ncellsL);    
349   for(i=0;i<75;i++) printf("*");
350   printf("\n");
351            
352 }
353             
354 //_____________________________________________________________________________
355 void AliVZEROv2::BuildGeometry()
356 {
357   
358 // Builds simple ROOT TNode geometry for event display
359
360   Int_t i;
361
362   printf("\n");
363   for(i=0;i<30;i++) printf("*");
364   printf(" VZERO BuildGeometry ");
365   for(i=0;i<30;i++) printf("*");
366   printf("\n");
367
368   TNode *top; 
369
370   TNode *v0Rnode, *v0Rnode0, *v0Rnode6 , *v0Rnode7, *v0Rnode8, *v0Rnode9;
371   TNode *v0Rnode1, *v0Rnode2, *v0Rnode3, *v0Rnode4, *v0Rnode5;
372   TNode *v0Lnode, *v0Lnode0;
373   TNode *v0Lnode1, *v0Lnode2, *v0Lnode3, *v0Lnode4, *v0Lnode5, *v0Lnode6;
374    
375   const int kColorVZERO  = kGreen;
376  
377   top = gAlice->GetGeometry()->GetNode("alice");
378
379   Float_t  height1, height2, height3, height4, height5; 
380   Float_t  height;
381   Float_t  theta;  
382   
383   Float_t  halfThickQua;
384   Float_t  zdet;
385   Float_t  r0, r5;
386   Float_t  pi = TMath::Pi();
387
388   height1           =     1.82;           // height of cell 1, in cm
389   height2           =     3.81;           // height of cell 2, in cm
390   height3           =     4.72;           // height of cell 3, in cm
391   height4           =     7.12;           // height of cell 4, in cm
392   height5           =    10.83;           // height of cell 5, in cm  
393
394   theta             =    pi/6.0/2.0;    
395    
396   halfThickQua    =    fThickness1/2.0; 
397   
398   zdet              =    90.0 - 0.6 - fThickness/2.0;   
399   r0                =    4.05;         
400   height            =    height1 + height2 + height3 + height4 + height5;
401   r5                =    r0 + height;
402   
403   Int_t     ndiv    =     1;  
404
405   Float_t   partube[3];
406
407   partube[0] =  r0 - 0.2;
408   partube[1] =  r5 + 1.0;
409   partube[2] = fThickness/2.0;   
410   
411   TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
412                 
413   top->cd();
414   
415   v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
416   
417   v0Rnode->SetLineColor(kYellow);
418   fNodes->Add(v0Rnode);  
419   v0Rnode->SetVisibility(2);     
420  
421 // Rondelles de carbone (epaisseur 3 mm) de maintien des cellules ...
422   
423   partube[0] =   r0;
424   partube[1] =   r5;
425   partube[2] =   +0.3/2.0;
426   
427   TTUBE  *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
428   
429   v0Rnode->cd();
430   v0Rnode6 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);        
431   v0Rnode6->SetLineColor(kYellow);
432   fNodes->Add(v0Rnode6); 
433   v0Rnode->cd();
434   v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);        
435   v0Rnode7->SetLineColor(kYellow);
436   fNodes->Add(v0Rnode7);
437   
438   partube[0] =   r0 - 0.2;
439   partube[1] =   r0;
440   partube[2] =   +fThickness/2.0;
441   
442   TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
443  
444   v0Rnode->cd();
445   v0Rnode8 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
446   v0Rnode8->SetLineColor(kYellow);
447   fNodes->Add(v0Rnode8);
448
449   partube[0] =   r5;
450   partube[1] =   r5 + 1.0; 
451   partube[2] =   +fThickness/2.0;
452
453   TTUBE  *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
454   
455   v0Rnode->cd();
456   v0Rnode9 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
457   v0Rnode9->SetLineColor(kYellow);
458   fNodes->Add(v0Rnode9);
459   
460   Float_t   partubs[5];
461  
462   partubs[0]      =  r0;
463   partubs[1]      =  r5;
464   partubs[2]      =  fThickness/2.0;
465   partubs[3]      =  90.0-15.0;
466   partubs[4]      = 120.0-15.0;
467
468   TTUBS  *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2], 
469                                                   partubs[3], partubs[4]); 
470                                                   
471   v0R0->SetNumberOfDivisions(ndiv);                                               
472
473   Float_t   r1     =  r0 + height1;
474   Float_t   offset = fThickness/2.0 - 0.3 - fThickness1/2.0; 
475   Float_t   offsetFibers = 0.7;
476     
477   partubs[0]     =  r0;
478   partubs[1]     =  r1;
479   partubs[2]     =  fThickness1/2.0;
480
481   TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2], 
482                                                   partubs[3], partubs[4]);
483
484   v0R1->SetNumberOfDivisions(ndiv);
485   
486   Float_t   r2   =  r1 + height2;       
487   
488   partubs[0]     =  r1;
489   partubs[1]     =  r2;
490
491   TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2], 
492                                                   partubs[3], partubs[4]);
493
494   v0R2->SetNumberOfDivisions(ndiv);
495   
496   Float_t   r3   =  r2 + height3;
497    
498   partubs[0]     =  r2;
499   partubs[1]     =  r3;
500   
501   TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2], 
502                                                   partubs[3], partubs[4]);
503   v0R3->SetNumberOfDivisions(ndiv);
504  
505   Float_t   r4   =  r3 + height4;
506    
507   partubs[0]     =  r3;
508   partubs[1]     =  r4;
509
510   TTUBS *v0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2], 
511                                                   partubs[3], partubs[4]);
512
513   v0R4->SetNumberOfDivisions(ndiv);
514
515   partubs[0]     =  r4;
516   partubs[1]     =  r5;
517   partubs[3]     =  90.0-15.0;
518   partubs[4]     = 120.0-30.0;
519   
520   TTUBS *v0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2], 
521                                                   partubs[3], partubs[4]);
522
523   v0R5->SetNumberOfDivisions(ndiv);
524
525   partubs[3]     = 120.0-30.0;
526   partubs[4]     = 120.0-15.0;
527   
528   TTUBS *v0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2], 
529                                                   partubs[3], partubs[4]);
530                                                   
531   v0R6->SetNumberOfDivisions(ndiv);
532                 
533   Float_t  phi;
534   Float_t  phiDeg= 180./6.;
535     
536   Int_t    ndetR = 1; 
537
538   char     nameNode[12];  
539  
540   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
541   
542   {
543      
544     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );        
545      
546     sprintf(nameNode,"SUBDER%d",ndetR);
547     
548     v0Rnode->cd();
549     v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);    
550     v0Rnode0->SetLineColor(kYellow);
551     fNodes->Add(v0Rnode0);
552     ndetR++;
553     
554     sprintf(nameNode,"SUBDER%d",ndetR);
555     v0Rnode0->cd();    
556     v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset,0);     
557     v0Rnode1->SetLineColor(kColorVZERO);
558     fNodes->Add(v0Rnode1);
559     ndetR++;
560     
561     sprintf(nameNode,"SUBDER%d",ndetR);
562     v0Rnode0->cd();    
563     v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset + offsetFibers,0);      
564     v0Rnode2->SetLineColor(kColorVZERO);
565     fNodes->Add(v0Rnode2);
566     ndetR++;
567
568     sprintf(nameNode,"SUBDER%d",ndetR);
569     v0Rnode0->cd();    
570     v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset + 2.0*offsetFibers,0);  
571     v0Rnode3->SetLineColor(kColorVZERO);
572     fNodes->Add(v0Rnode3);
573     ndetR++;
574
575     sprintf(nameNode,"SUBDER%d",ndetR);
576     v0Rnode0->cd();    
577     v0Rnode4 = new TNode(nameNode,nameNode,v0R4,0.0,0.0, -offset + 3.0*offsetFibers,0);  
578     v0Rnode4->SetLineColor(kColorVZERO);
579     fNodes->Add(v0Rnode4);
580     ndetR++;
581      
582     sprintf(nameNode,"SUBDER%d",ndetR);
583     v0Rnode0->cd();    
584     v0Rnode5 = new TNode(nameNode,nameNode,v0R5,0.0,0.0, -offset + 4.0*offsetFibers,0);  
585     v0Rnode5->SetLineColor(kColorVZERO);
586     fNodes->Add(v0Rnode5);
587     ndetR++;
588     
589     sprintf(nameNode,"SUBDER%d",ndetR);
590     v0Rnode0->cd();    
591     v0Rnode6 = new TNode(nameNode,nameNode,v0R6,0.0,0.0, -offset + 4.0*offsetFibers,0);  
592     v0Rnode6->SetLineColor(kColorVZERO);
593     fNodes->Add(v0Rnode6);
594     ndetR++;
595        
596     v0Rnode0->SetVisibility(2);
597     
598   }    
599
600 // Left side of VZERO :
601      
602   Float_t   r0Left      =   4.3;   
603   Float_t   height1Left =   2.6; 
604   Float_t   height2Left =   4.1;
605   Float_t   height3Left =   6.4;
606   Float_t   height4Left =  10.2;
607   Float_t   height5Left =  16.9;
608   Float_t   heightLeft  = height1Left + height2Left + height3Left 
609                                         + height4Left + height5Left;
610   Float_t   r5Left      = r0Left  + heightLeft; 
611
612   partube[0] =  r0Left;
613   partube[1] =  r5Left;
614   partube[2] =  fThickness1/2.0; 
615   
616   TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
617                 
618   top->cd();
619   
620   v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,350.0+fThickness1/2.0,0);
621   
622   v0Lnode->SetLineColor(kBlue);
623   fNodes->Add(v0Lnode);
624   
625   v0Lnode->SetVisibility(2);
626
627   partubs[0]      =  r0Left;
628   partubs[1]      =  r5Left;
629   partubs[2]      =  fThickness1/2.0;
630   partubs[3]      =  90.0-15.0;
631   partubs[4]      = 120.0-15.0;
632   
633   TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2], 
634                                                   partubs[3], partubs[4]);
635
636   v0L0->SetNumberOfDivisions(ndiv); 
637   v0L0->SetLineColor(7);
638   
639   Float_t   offset_left;
640   offset_left    = - fThickness1/2.0; 
641
642   Float_t   r1Left =  r0Left + height1Left;        
643       
644   partubs[0]     =  r0Left;
645   partubs[1]     =  r1Left;
646
647   TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2], 
648                                                   partubs[3], partubs[4]);
649
650   v0L1->SetNumberOfDivisions(ndiv);
651   
652   Float_t   r2Left =  r1Left + height2Left;       
653   
654   partubs[0]     =  r1Left;
655   partubs[1]     =  r2Left;
656
657   TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2], 
658                                                   partubs[3], partubs[4]);
659
660   v0L2->SetNumberOfDivisions(ndiv);
661   
662   Float_t   r3Left  =  r2Left + height3Left;
663   
664   partubs[0]     =  r2Left;
665   partubs[1]     =  r3Left;
666   
667   TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2], 
668                                                   partubs[3], partubs[4]);
669   v0L3->SetNumberOfDivisions(ndiv);
670  
671   Float_t   r4Left  =   r3Left + height4Left;
672   
673   partubs[0]     =  r3Left;
674   partubs[1]     =  r4Left;
675
676   TTUBS *v0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2], 
677                                                   partubs[3], partubs[4]);
678
679   v0L4->SetNumberOfDivisions(ndiv);
680
681   partubs[0]     =  r4Left;
682   partubs[1]     =  r5Left;
683   partubs[3]     =  90.0-15.0;
684   partubs[4]     = 120.0-30.0;
685   
686   TTUBS *v0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2], 
687                                                   partubs[3], partubs[4]);
688
689
690   v0L5->SetNumberOfDivisions(ndiv);
691
692   partubs[3]     = 120.0-30.0;
693   partubs[4]     = 120.0-15.0;
694   
695   TTUBS *v0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2], 
696                                                   partubs[3], partubs[4]);
697                                                   
698   v0L6->SetNumberOfDivisions(ndiv);
699
700   Int_t    ndetL   = 1;
701  
702   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
703   
704   {
705      
706     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );        
707     
708  
709     sprintf(nameNode,"SUBDEL%d",ndetL);
710     
711     v0Lnode->cd();
712     v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offset_left + halfThickQua,mat920);     
713     v0Lnode0->SetLineColor(kColorVZERO);
714     fNodes->Add(v0Lnode0);
715     ndetL++;
716     
717     sprintf(nameNode,"SUBDEL%d",ndetL);
718     v0Lnode0->cd();    
719     v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);         
720     v0Lnode1->SetLineColor(kColorVZERO);
721     fNodes->Add(v0Lnode1);
722     ndetL++;
723     
724     sprintf(nameNode,"SUBDEL%d",ndetL);
725     v0Lnode0->cd();    
726     v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);         
727     v0Lnode2->SetLineColor(kColorVZERO);
728     fNodes->Add(v0Lnode2);
729     ndetL++;
730
731
732     sprintf(nameNode,"SUBDEL%d",ndetL);
733     v0Lnode0->cd();    
734     v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);         
735     v0Lnode3->SetLineColor(kColorVZERO);
736     fNodes->Add(v0Lnode3);
737     ndetL++;
738
739     sprintf(nameNode,"SUBDEL%d",ndetL);
740     v0Lnode0->cd();    
741     v0Lnode4 = new TNode(nameNode,nameNode,v0L4,0.0,0.0, 0.0,0);         
742     v0Lnode4->SetLineColor(kColorVZERO);
743     fNodes->Add(v0Lnode4);
744     ndetL++;
745      
746     sprintf(nameNode,"SUBDEL%d",ndetL);
747     v0Lnode0->cd();    
748     v0Lnode5 = new TNode(nameNode,nameNode,v0L5,0.0,0.0, 0.0,0);         
749     v0Lnode5->SetLineColor(kColorVZERO);
750     fNodes->Add(v0Lnode5);
751     ndetL++;
752     
753     sprintf(nameNode,"SUBDEL%d",ndetL);
754     v0Lnode0->cd();    
755     v0Lnode6 = new TNode(nameNode,nameNode,v0L6,0.0,0.0, 0.0,0);         
756     v0Lnode6->SetLineColor(kColorVZERO);
757     fNodes->Add(v0Lnode6);
758     ndetL++;
759        
760     v0Lnode0->SetVisibility(2);
761     
762   }    
763      
764 }  
765     
766 //------------------------------------------------------------------------
767 void AliVZEROv2::CreateMaterials()
768 {
769
770 // Creates materials used for geometry 
771
772     Int_t i;
773
774     printf("\n");
775     for(i=0;i<25;i++) printf("*");
776     printf(" VZERO create materials ");
777     for(i=0;i<26;i++) printf("*");
778     printf("\n");
779     
780 /*
781     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, 
782                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
783
784            
785     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, 
786                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
787                            
788     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458, 
789                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362, 
790                                  1.662295, 1.68337 };
791                                  
792     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525, 
793                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };   
794                                                                                         
795     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
796     
797         
798     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. }; 
799     
800     
801     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,
802                                1e-4,1e-4,1e-4,1e-4 };
803     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
804
805 */        
806
807     Int_t *idtmed = fIdtmed->GetArray()-2999;
808     
809 //    TGeant3 *geant3 = (TGeant3*) gMC;
810     
811 //  Parameters related to Quarz (SiO2) :
812  
813     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
814     Int_t nlmatqua;
815     
816     aqua[0]    = 28.09;
817     aqua[1]    = 16.;
818     zqua[0]    = 14.;
819     zqua[1]    = 8.;
820     densqua    = 2.64;
821     nlmatqua   = -2;
822     wmatqua[0] = 1.;
823     wmatqua[1] = 2.;
824
825 // Parameters  related to aluminum sheets :
826     
827     Float_t  aal   = 26.98;
828     Float_t  zal   = 13.00; 
829     Float_t  densal=   2.7; 
830     Float_t  radlal=   8.9;
831        
832 // Parameters  related to scintillator CH :
833     
834     Float_t ascin[2] = {1.00794,12.011};
835     Float_t zscin[2] = {1.,6.};
836     Float_t wscin[2] = {1.,1.};
837     Float_t denscin  = 1.032;
838     
839 //  Definition of materials :
840        
841     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
842     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
843     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
844     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
845     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
846     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
847  
848     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
849     
850      
851     Int_t   iSXFLD = gAlice->Field()->Integ();
852     Float_t sXMGMX = gAlice->Field()->Max();
853     
854     Float_t tmaxfd, stemax, deemax, epsil, stmin;
855         
856     tmaxfd = 10.;
857     stemax = 0.1;
858     deemax = 0.1;     
859     epsil  = 0.001;
860     stmin  = 0.001;
861   
862 //  Active Air :    
863     AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
864               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
865
866 //  Inactive air : 
867   
868     AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
869               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
870     
871     AliMedium(2, "CARBON$ ", 2,  1, iSXFLD, sXMGMX,
872               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);   
873
874     AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
875               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
876     
877     AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
878               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
879               
880
881     AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
882               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);    
883
884     AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
885
886     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
887     gMC->Gstpar(idtmed[3000], "HADR", 1.);
888     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
889     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
890     
891     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
892     gMC->Gstpar(idtmed[3001], "HADR", 1.);
893     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
894     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
895
896     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
897     gMC->Gstpar(idtmed[3002], "HADR", 1.);
898     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
899     gMC->Gstpar(idtmed[3002], "DRAY", 1.);  
900     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ; 
901     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
902     
903     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
904     gMC->Gstpar(idtmed[3003], "HADR", 1.);
905     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
906     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
907     
908     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
909     gMC->Gstpar(idtmed[3004], "HADR", 1.);
910     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
911     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
912     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ; 
913     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
914     
915     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
916     gMC->Gstpar(idtmed[3005], "HADR", 1.);
917     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
918     gMC->Gstpar(idtmed[3005], "DRAY", 1.); 
919     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ; 
920     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
921       
922     
923 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);    
924 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
925
926 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);    
927 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
928                                    
929     
930 }
931 //---------------------------------------------------------------------
932 void AliVZEROv2::DrawModule()
933 {
934
935 //  Drawing is done in DrawVZERO.C
936
937    Int_t i;
938
939    printf("\n");
940    for(i=0;i<30;i++) printf("*");
941    printf(" VZERO DrawModule ");
942    for(i=0;i<30;i++) printf("*");
943    printf("\n");
944
945
946 }
947
948 //-------------------------------------------------------------------
949 void AliVZEROv2::Init()
950 {
951 // Initialises version 1 of the VZERO Detector
952 // Just prints an information message
953   
954    printf(" VZERO version %d initialized \n",IsVersion());
955    
956 //   gMC->SetMaxStep(fMaxStepAlu);
957 //   gMC->SetMaxStep(fMaxStepQua);
958    
959     AliVZERO::Init();
960   
961 }
962
963 //-------------------------------------------------------------------
964
965 void AliVZEROv2::StepManager()
966 {
967  
968 // Step Manager, called at each step 
969    
970      Int_t     copy;
971      static    Int_t   vol[4];
972      static    Float_t hits[19];
973      static    Float_t eloss, tlength;
974      
975      TLorentzVector pos;     
976      TLorentzVector mom;
977      
978      Float_t        theta;
979      Float_t        phi;
980      Float_t        kRaddeg = 180/TMath::Pi();
981      Float_t        ringNumber;
982
983      Int_t          ipart;
984      Float_t        destep, step;
985           
986
987 //   We keep only charged tracks :
988      
989      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return; 
990
991
992      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
993      vol[2]    = gMC->CurrentVolID(copy);
994      vol[3]    = copy;
995      
996
997      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
998                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
999                ringNumber = 1.0;
1000      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1001                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") ) 
1002                ringNumber = 2.0;  
1003      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1004                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1005                ringNumber = 3.0;
1006      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1007                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )   
1008                ringNumber = 4.0; 
1009      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1010                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") ||
1011                gMC->CurrentVolID(copy) == gMC->VolId("V0L6") ||
1012                gMC->CurrentVolID(copy) == gMC->VolId("V0R6") )    
1013                ringNumber = 5.0; 
1014      else
1015                ringNumber = 0.0;
1016
1017      if  (  ringNumber > 0.5  ) { 
1018      
1019         destep    = gMC->Edep();
1020         step      = gMC->TrackStep();
1021         eloss    += destep;
1022         tlength  += step; 
1023         
1024                  
1025         if  ( gMC->IsTrackEntering()  )  {  
1026        
1027             gMC->TrackPosition(pos);
1028      
1029             gMC->TrackMomentum(mom);      
1030             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1031             Double_t pt   = TMath::Sqrt(tc);
1032             Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1033             theta   = Float_t(TMath::ATan2(pt,Double_t(mom[2])))*kRaddeg;
1034             phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1035      
1036             ipart  = gMC->TrackPid();
1037
1038             hits[0]  = pos[0];
1039             hits[1]  = pos[1];
1040             hits[2]  = pos[2];           
1041             hits[3]  =  Float_t (ipart); 
1042
1043             hits[4]  = gMC->TrackTime();
1044             hits[5]  = gMC->TrackCharge();
1045             hits[6]  = theta;
1046             hits[7]  = phi;
1047             hits[8]  = ringNumber;
1048          
1049             hits[9]  = pt;
1050             hits[10] = pmom;
1051             hits[11] = mom[0];
1052             hits[12] = mom[1];
1053             hits[13] = mom[2];
1054             
1055             TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
1056             hits[14] = par->Vx();
1057             hits[15] = par->Vy();
1058             hits[16] = par->Vz();
1059             
1060             tlength  = 0.0;
1061             eloss    = 0.0;
1062             
1063          }
1064          
1065          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1066          
1067          hits[17] =   eloss;
1068          hits[18] = tlength;
1069          
1070          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1071                  
1072          tlength  = 0.0;
1073          eloss    = 0.0; 
1074
1075           
1076          } 
1077     }
1078       
1079 }
1080
1081 //_____________________________________________________________________________
1082 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1083 {
1084   
1085 //  Adds a VZERO hit
1086   
1087   TClonesArray &lhits = *fHits;
1088   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1089 }
1090
1091 //---------------------------------------------------------------------
1092 void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits) 
1093 {
1094
1095 //  Adds a VZERO digit
1096
1097    TClonesArray  &ldigits = *fDigits;
1098    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1099 }
1100
1101 //---------------------------------------------------------------------
1102 void AliVZEROv2::MakeBranch(Option_t *option)
1103 {
1104   
1105 // Creates new branches in the current Root Tree
1106     
1107   char branchname[10];
1108   sprintf(branchname,"%s",GetName());
1109   printf(" fBufferSize = %d \n",fBufferSize);
1110   
1111   const char *cH = strstr(option,"H");
1112   
1113   if (fHits   && TreeH() && cH) {
1114     TreeH()->Branch(branchname,&fHits, fBufferSize);
1115     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1116   }     
1117
1118   const char *cD = strstr(option,"D");
1119   //
1120   if (fDigits   && fLoader->TreeD() && cD) {
1121     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1122     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1123   }  
1124    
1125 }