Obsolete.
[u/mrichter/AliRoot.git] / VZERO / AliVZEROv3.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
4  * Author: The ALICE Off-line Project.                                    *
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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 <TGeometry.h>
43 #include <TLorentzVector.h>
44 #include <TMath.h>
45 #include <TNode.h>
46 #include <TObjectTable.h>
47 #include <TTUBE.h>
48 #include <TTUBS.h>
49 #include <TVirtualMC.h>
50 #include <TParticle.h>
51
52 // --- AliRoot header files ---
53 #include "AliConst.h"
54 #include "AliLog.h"
55 #include "AliMC.h"
56 #include "AliMagF.h"
57 #include "AliRun.h"
58 #include "AliVZEROLoader.h"
59 #include "AliVZEROdigit.h"
60 #include "AliVZEROhit.h"
61 #include "AliVZEROv3.h"
62  
63 ClassImp(AliVZEROv3)
64
65 //_____________________________________________________________________________
66 AliVZEROv3:: AliVZEROv3():AliVZERO(),
67    fCellId(0),
68    fTrackPosition(),
69    fTrackMomentum(), 
70    fLightYield(93.75),
71    fLightAttenuation(0.05),
72    fnMeters(15.0),
73    fFibToPhot(0.3)
74 {
75 // Standard default constructor 
76 }
77
78 //_____________________________________________________________________________
79 AliVZEROv3::AliVZEROv3(const char *name, const char *title):
80    AliVZERO(name,title),
81    fCellId(0),
82    fTrackPosition(),
83    fTrackMomentum(),
84    fLightYield(93.75),
85    fLightAttenuation(0.05),
86    fnMeters(15.0),
87    fFibToPhot(0.3)
88 {
89
90 // Standard constructor for V-zero Detector  version 2
91
92   AliDebug(2,"Create VZERO object");
93       
94 //   fLightYield              =  93.75;
95 //   fLightAttenuation        =   0.05; 
96 //   fnMeters                 =   15.0;  
97 //   fFibToPhot               =    0.3;
98  
99 }
100
101 //_____________________________________________________________________________
102 void AliVZEROv3::CreateGeometry()
103 {
104
105 // Creates the GEANT geometry of the V-zero Detector  version 3
106   
107   AliDebug(2,"Create VZERO Geometry");
108       
109   Int_t    *idtmed = fIdtmed->GetArray()-2999;
110
111   Int_t    ndetR = 1;
112   Int_t    ndetL = 1;
113  
114   Int_t    ncellsR = 1;
115   Int_t    ncellsL = 1;
116   
117   Int_t    idrotm[999];
118  
119   Float_t  height1Right, height2Right, height3Right; 
120   Float_t  heightRight;
121   Float_t  theta;  
122   
123   Float_t  halfThickQua;
124   
125   Float_t  zdet;
126   Float_t  r0Right, r3Right;
127   Float_t  pi = TMath::Pi();
128     
129   height1Right    =     1.82 + 3.81;  // height of cell 1, in cm
130   height2Right    =     4.72 + 7.12;  // height of cell 2, in cm
131   height3Right    =           10.83;  // height of cell 3, in cm
132   
133   theta       = pi/6.0/2.0;       // half angular opening = 15 degrees
134     
135   halfThickQua= fThickness1/2.0;  // half thickness of elementary cell (inner ring)
136   
137 // distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from 
138 // absorber nose sitting at 90 cm. Will use -zdet later...
139 // size of V0R box  (fThickness) is increased by 1 mm as compared to version v2 
140
141   fThickness  =    fThickness + 0.1;  
142   zdet        =    90.0 - 0.6 - fThickness/2.0;  // distance to vertex (along Z axis)   
143   r0Right     =    4.05;          // closest distance to center of the beam pipe
144   heightRight =    height1Right + height2Right + height3Right;
145   r3Right     =    r0Right + heightRight;
146
147 // Creation of mother volume v0LE - left part - :
148 // Entrance face at  +350.0 cm  (new coordinate system) ...
149
150    Float_t   partube[3];
151    
152    partube[0] =  4.3;
153    partube[1] = 45.0;
154    partube[2] = fThickness1/2.0;   
155     
156    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
157      
158 // Creation of five rings - left part - :
159 // Entrance face at +350.0 cm  (new coordinate system) ... 
160
161 // Mother volume v0L0 in which will be set 5 scintillator cells 
162
163   Float_t   partubs[5];  
164     
165   Float_t   r0Left      =   4.3;   
166   Float_t   height1Left =   2.6 +  4.1;  // previous ring 1 + ring 2
167   Float_t   height2Left =   6.4 + 10.2;  // previous ring 3 + ring 4
168   Float_t   height3Left =  16.9;  
169   Float_t   heightLeft  =   height1Left + height2Left + height3Left; 
170                                       
171   Float_t   r3Left      =   r0Left  + heightLeft; 
172   
173   partubs[0]     =  r0Left;
174   partubs[1]     =  r3Left;
175   partubs[2]     =  fThickness1/2.0;
176   partubs[3]     =  90.0-15.0;
177   partubs[4]     = 120.0-15.0;
178
179   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
180   
181   Float_t  r1Left =  r0Left + height1Left;        
182      
183   partubs[0]     =  r0Left;
184   partubs[1]     =  r1Left;
185
186   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
187   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY"); 
188
189   Float_t  r2Left  =  r1Left + height2Left;       
190   
191   partubs[0]     =  r1Left;
192   partubs[1]     =  r2Left;
193
194   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
195   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY"); 
196     
197   partubs[0]     =  r2Left;
198   partubs[1]     =  r3Left;
199
200   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
201   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
202   
203
204 // Creation of mother volume v0RI - right part - :
205   
206   partube[0] = r0Right - 0.2;
207   partube[1] = r3Right + 1.0;
208   partube[2] = fThickness/2.0; 
209       
210   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
211   
212 // Creation of  carbon lids (3.5 mm thick) to keep v0RI box shut...
213
214   Float_t  lidThickness = 0.35;
215  
216   partube[0] =   r0Right;
217   partube[1] =   r3Right;
218   partube[2] =   +lidThickness/2.0;
219     
220   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3); 
221   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
222   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
223   
224 // Creation of aluminum rings to maintain the v0RI pieces ...
225
226   partube[0] =   r0Right - 0.2;
227   partube[1] =   r0Right;
228   partube[2] =   +fThickness/2.0;
229    
230   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);    
231   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
232
233   partube[0] =   r3Right;
234   partube[1] =   r3Right + 1.0;
235   partube[2] =   +fThickness/2.0;
236  
237   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);    
238   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
239   
240 // Mother volume v0R0 in which will be set 3  scintillator cells 
241   
242   partubs[0]      =  r0Right;
243   partubs[1]      =  r3Right;
244   partubs[2]      =  fThickness/2.0;
245   partubs[3]      =  90.0-15.0;
246   partubs[4]      = 120.0-15.0;
247
248   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume 
249
250 // Elementary cell of ring 1 :
251 // (cells of ring 1  will be shifted by 1.7 cm towards vertex to output fibers) 
252    
253   Float_t   offsetFibers  =  1.7;
254   Float_t   offset        =  fThickness/2.0 - lidThickness - fThickness1/2.0; 
255   Float_t   r1Right       =  r0Right + height1Right;
256       
257   partubs[0]     =  r0Right;
258   partubs[1]     =  r1Right;
259   partubs[2]     =  fThickness1/2.0;
260   
261   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
262   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY"); 
263
264 // Elementary cell of ring 2 :
265
266   Float_t   r2Right   =  r1Right + height2Right;       
267   
268   partubs[0]     =  r1Right;
269   partubs[1]     =  r2Right;
270
271   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
272   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY"); 
273
274
275 // Elementary cell of ring 3 :
276    
277   partubs[0]     =  r2Right;
278   partubs[1]     =  r3Right;
279
280   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
281   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
282
283
284   Float_t  phiDeg = 180./6.; 
285
286 // Right part : 
287  
288   for(Float_t  phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
289       {        
290         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
291         gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
292                           0.0,0.0,idrotm[902],"ONLY");
293         ndetR++;
294        }
295
296   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
297  
298   ncellsR = (ndetR - 1) * 3;  
299   AliInfo(Form("Number of cells on Right side =   %d",ncellsR));    
300
301 // Left part :
302   
303   for(Float_t  phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
304       {       
305         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
306         gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
307                           0.0,0.0,idrotm[902],"ONLY");
308         ndetL++;
309        }
310
311   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
312  
313   ncellsL = (ndetL - 1) * 3;
314   AliInfo(Form("Number of cells on Left side  =   %d",  ncellsL));    
315            
316 }
317             
318 //_____________________________________________________________________________
319 void AliVZEROv3::BuildGeometry()
320 {
321   
322 // Builds simple ROOT TNode geometry for event display
323
324   AliDebug(2,"VZERO BuildGeometry");
325
326   TNode *top; 
327
328   TNode *v0Rnode, *v0Rnode0, *v0Rnode6 , *v0Rnode7, *v0Rnode8, *v0Rnode9;
329   TNode *v0Rnode1, *v0Rnode2, *v0Rnode3;
330   TNode *v0Lnode, *v0Lnode0;
331   TNode *v0Lnode1, *v0Lnode2, *v0Lnode3;
332    
333   const int kColorVZERO  = kGreen;
334  
335   top = gAlice->GetGeometry()->GetNode("alice");
336
337   Float_t  height1Right, height2Right, height3Right; 
338   Float_t  heightRight;
339   Float_t  theta;  
340   
341   Float_t  halfThickQua;
342   Float_t  zdet;
343   Float_t  r0Right, r3Right;
344   Float_t  pi = TMath::Pi();
345
346   height1Right      =     1.82 + 3.81;       // height of cell 1, in cm
347   height2Right      =     4.72 + 7.12;       // height of cell 2, in cm
348   height3Right      =           10.83;       // height of cell 3, in cm
349   
350   theta             =    pi/6.0/2.0;    
351    
352   halfThickQua      =    fThickness1/2.0; 
353   
354   zdet              =    90.0 - 0.6 - fThickness/2.0;   
355   r0Right                =    4.05;         
356   heightRight            =    height1Right + height2Right + height3Right;
357   r3Right                =    r0Right + heightRight;
358   
359   Int_t     ndiv    =     1;  
360
361   Float_t   partube[3];
362
363   partube[0] =  r0Right - 0.2;
364   partube[1] =  r3Right + 1.0;
365   partube[2] = fThickness/2.0;   
366   
367   TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
368                 
369   top->cd();
370   
371   v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
372   
373   v0Rnode->SetLineColor(kYellow);
374   fNodes->Add(v0Rnode);  
375   v0Rnode->SetVisibility(2);     
376  
377 // Rondelles de carbone (epaisseur 3.5 mm) de maintien des cellules ...
378
379   Float_t  lidThickness = 0.35;
380   
381   partube[0] =   r0Right;
382   partube[1] =   r3Right;
383   partube[2] =   +lidThickness/2.0;
384   
385   TTUBE  *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
386   
387   v0Rnode->cd();
388   v0Rnode6 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);        
389   v0Rnode6->SetLineColor(kYellow);
390   fNodes->Add(v0Rnode6); 
391   v0Rnode->cd();
392   v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);        
393   v0Rnode7->SetLineColor(kYellow);
394   fNodes->Add(v0Rnode7);
395   
396   partube[0] =   r0Right - 0.2;
397   partube[1] =   r0Right;
398   partube[2] =   +fThickness/2.0;
399   
400   TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
401  
402   v0Rnode->cd();
403   v0Rnode8 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
404   v0Rnode8->SetLineColor(kYellow);
405   fNodes->Add(v0Rnode8);
406
407   partube[0] =   r3Right;
408   partube[1] =   r3Right + 1.0; 
409   partube[2] =   +fThickness/2.0;
410
411   TTUBE  *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
412   
413   v0Rnode->cd();
414   v0Rnode9 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
415   v0Rnode9->SetLineColor(kYellow);
416   fNodes->Add(v0Rnode9);
417   
418   Float_t   partubs[5];
419  
420   partubs[0]      =  r0Right;
421   partubs[1]      =  r3Right;
422   partubs[2]      =  fThickness/2.0;
423   partubs[3]      =  90.0-15.0;
424   partubs[4]      = 120.0-15.0;
425
426   TTUBS  *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2], 
427                                                   partubs[3], partubs[4]); 
428                                                   
429   v0R0->SetNumberOfDivisions(ndiv);                                               
430
431   Float_t   r1Right =  r0Right + height1Right;
432   Float_t   offset  = fThickness/2.0 - lidThickness - fThickness1/2.0; 
433   Float_t   offsetFibers = 1.7;
434     
435   partubs[0]     =  r0Right;
436   partubs[1]     =  r1Right;
437   partubs[2]     =  fThickness1/2.0;
438
439   TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2], 
440                                                   partubs[3], partubs[4]);
441
442   v0R1->SetNumberOfDivisions(ndiv);
443   
444   Float_t   r2Right   =  r1Right + height2Right;       
445   
446   partubs[0]     =  r1Right;
447   partubs[1]     =  r2Right;
448
449   TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2], 
450                                                   partubs[3], partubs[4]);
451
452   v0R2->SetNumberOfDivisions(ndiv);
453    
454   partubs[0]     =  r2Right;
455   partubs[1]     =  r3Right;
456   
457   TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2], 
458                                                   partubs[3], partubs[4]);
459   v0R3->SetNumberOfDivisions(ndiv);
460         
461   Float_t  phi;
462   Float_t  phiDeg= 180./6.;
463     
464   Int_t    ndetR = 1; 
465
466   char     nameNode[12];  
467  
468   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
469   
470   {
471      
472     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );        
473      
474     sprintf(nameNode,"SUBDER%d",ndetR);
475     
476     v0Rnode->cd();
477     v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);    
478     v0Rnode0->SetLineColor(kYellow);
479     fNodes->Add(v0Rnode0);
480     ndetR++;
481     
482     sprintf(nameNode,"SUBDER%d",ndetR);
483     v0Rnode0->cd();    
484     v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset+ offsetFibers ,0);      
485     v0Rnode1->SetLineColor(kColorVZERO);
486     fNodes->Add(v0Rnode1);
487     ndetR++;
488     
489     sprintf(nameNode,"SUBDER%d",ndetR);
490     v0Rnode0->cd();    
491     v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset,0);     
492     v0Rnode2->SetLineColor(kColorVZERO);
493     fNodes->Add(v0Rnode2);
494     ndetR++;
495
496     sprintf(nameNode,"SUBDER%d",ndetR);
497     v0Rnode0->cd();    
498     v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset,0);     
499     v0Rnode3->SetLineColor(kColorVZERO);
500     fNodes->Add(v0Rnode3);
501     ndetR++;
502        
503     v0Rnode0->SetVisibility(2);
504     
505   }    
506
507 // Left side of VZERO :
508      
509   Float_t   r0Left      =   4.3;   
510   Float_t   height1Left =   2.6 +  4.1; 
511   Float_t   height2Left =   6.4 + 10.2;
512   Float_t   height3Left =   16.9;  
513   Float_t   heightLeft  = height1Left + height2Left + height3Left; 
514                                         
515   Float_t   r3Left      = r0Left  + heightLeft; 
516
517   partube[0] =  r0Left;
518   partube[1] =  r3Left;
519   partube[2] =  fThickness1/2.0; 
520   
521   TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
522                 
523   top->cd();
524   
525   v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,350.0+fThickness1/2.0,0);
526   
527   v0Lnode->SetLineColor(kBlue);
528   fNodes->Add(v0Lnode);
529   
530   v0Lnode->SetVisibility(2);
531
532   partubs[0]      =  r0Left;
533   partubs[1]      =  r3Left;
534   partubs[2]      =  fThickness1/2.0;
535   partubs[3]      =  90.0-15.0;
536   partubs[4]      = 120.0-15.0;
537   
538   TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2], 
539                                                   partubs[3], partubs[4]);
540
541   v0L0->SetNumberOfDivisions(ndiv); 
542   v0L0->SetLineColor(7);
543   
544   Float_t   offsetLeft;
545   offsetLeft    = - fThickness1/2.0; 
546
547   Float_t   r1Left =  r0Left + height1Left;        
548       
549   partubs[0]     =  r0Left;
550   partubs[1]     =  r1Left;
551
552   TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2], 
553                                                   partubs[3], partubs[4]);
554   v0L1->SetNumberOfDivisions(ndiv);
555   
556   Float_t   r2Left =  r1Left + height2Left;       
557   
558   partubs[0]     =  r1Left;
559   partubs[1]     =  r2Left;
560
561   TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2], 
562                                                   partubs[3], partubs[4]);
563   v0L2->SetNumberOfDivisions(ndiv);
564    
565   partubs[0]     =  r2Left;
566   partubs[1]     =  r3Left;
567   
568   TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2], 
569                                                   partubs[3], partubs[4]);
570   v0L3->SetNumberOfDivisions(ndiv);
571  
572   Int_t    ndetL   = 1;
573  
574   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
575   
576   {
577      
578     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );        
579     
580  
581     sprintf(nameNode,"SUBDEL%d",ndetL);
582     
583     v0Lnode->cd();
584     v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);      
585     v0Lnode0->SetLineColor(kColorVZERO);
586     fNodes->Add(v0Lnode0);
587     ndetL++;
588     
589     sprintf(nameNode,"SUBDEL%d",ndetL);
590     v0Lnode0->cd();    
591     v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);         
592     v0Lnode1->SetLineColor(kColorVZERO);
593     fNodes->Add(v0Lnode1);
594     ndetL++;
595     
596     sprintf(nameNode,"SUBDEL%d",ndetL);
597     v0Lnode0->cd();    
598     v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);         
599     v0Lnode2->SetLineColor(kColorVZERO);
600     fNodes->Add(v0Lnode2);
601     ndetL++;
602
603     sprintf(nameNode,"SUBDEL%d",ndetL);
604     v0Lnode0->cd();    
605     v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);         
606     v0Lnode3->SetLineColor(kColorVZERO);
607     fNodes->Add(v0Lnode3);
608     ndetL++;
609        
610     v0Lnode0->SetVisibility(2);
611     
612   }    
613      
614 }  
615     
616 //_____________________________________________________________________________
617 void AliVZEROv3::CreateMaterials()
618 {
619
620 // Creates materials used for geometry 
621
622     AliDebug(2,"VZERO create materials");
623     
624 /*
625     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, 
626                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
627
628            
629     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, 
630                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
631                            
632     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458, 
633                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362, 
634                                  1.662295, 1.68337 };
635                                  
636     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525, 
637                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };   
638                                                                                         
639     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
640     
641         
642     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. }; 
643     
644     
645     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,
646                                1e-4,1e-4,1e-4,1e-4 };
647     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
648
649 */        
650
651     Int_t *idtmed = fIdtmed->GetArray()-2999;
652     
653     
654 //  Parameters related to Quarz (SiO2) :
655  
656     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
657     Int_t nlmatqua;
658     
659     aqua[0]    = 28.09;
660     aqua[1]    = 16.;
661     zqua[0]    = 14.;
662     zqua[1]    = 8.;
663     densqua    = 2.64;
664     nlmatqua   = -2;
665     wmatqua[0] = 1.;
666     wmatqua[1] = 2.;
667
668 // Parameters  related to aluminum sheets :
669     
670     Float_t  aal   = 26.98;
671     Float_t  zal   = 13.00; 
672     Float_t  densal=   2.7; 
673     Float_t  radlal=   8.9;
674        
675 // Parameters  related to scintillator CH :
676     
677     Float_t ascin[2] = {1.00794,12.011};
678     Float_t zscin[2] = {1.,6.};
679     Float_t wscin[2] = {1.,1.};
680     Float_t denscin  = 1.032;
681     
682 // AIR
683
684     Float_t aAir[4]={12.,14.,16.,36.};
685     Float_t zAir[4]={6.,7.,8.,18.};
686     Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
687     Float_t dAir = 1.20479E-3;
688     
689 //  Definition of materials :
690
691 // AIR
692
693     AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
694     AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
695     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
696     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
697     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
698     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
699  
700     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
701     
702      
703     Int_t   iSXFLD = gAlice->Field()->Integ();
704     Float_t sXMGMX = gAlice->Field()->Max();
705     
706     Float_t tmaxfd, stemax, deemax, epsil, stmin;
707         
708     tmaxfd = 10.;
709     stemax = 0.1;
710     deemax = 0.1;     
711     epsil  = 0.001;
712     stmin  = 0.001;
713   
714 //  Active Air :    
715     AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
716               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
717
718 //  Inactive air : 
719   
720     AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
721               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
722     
723     AliMedium(2, "CARBON$ ", 2,  1, iSXFLD, sXMGMX,
724               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);   
725
726     AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
727               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
728     
729     AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
730               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
731               
732
733     AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
734               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);    
735
736     AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
737
738     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
739     gMC->Gstpar(idtmed[3000], "HADR", 1.);
740     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
741     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
742     
743     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
744     gMC->Gstpar(idtmed[3001], "HADR", 1.);
745     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
746     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
747
748     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
749     gMC->Gstpar(idtmed[3002], "HADR", 1.);
750     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
751     gMC->Gstpar(idtmed[3002], "DRAY", 1.);  
752     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ; 
753     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
754     
755     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
756     gMC->Gstpar(idtmed[3003], "HADR", 1.);
757     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
758     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
759     
760     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
761     gMC->Gstpar(idtmed[3004], "HADR", 1.);
762     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
763     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
764     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ; 
765     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
766     
767     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
768     gMC->Gstpar(idtmed[3005], "HADR", 1.);
769     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
770     gMC->Gstpar(idtmed[3005], "DRAY", 1.); 
771     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ; 
772     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
773       
774     
775 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);    
776 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
777
778 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);    
779 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
780                                        
781 }
782
783 //_____________________________________________________________________________
784 void AliVZEROv3::DrawModule() const
785 {
786
787 //  Drawing is done in DrawVZERO.C
788
789    AliDebug(2,"VZERO DrawModule");
790
791 }
792
793 //_____________________________________________________________________________
794 void AliVZEROv3::Init()
795 {
796 // Initialises version 2 of the VZERO Detector
797 // Just prints an information message
798   
799   AliInfo(Form("VZERO version %d initialized",IsVersion()));
800    
801 //   gMC->SetMaxStep(fMaxStepAlu);
802 //   gMC->SetMaxStep(fMaxStepQua);
803    
804     AliVZERO::Init();
805   
806 }
807
808
809 //_____________________________________________________________________________
810 void AliVZEROv3::StepManager()
811 {
812  
813 // Step Manager, called at each step 
814  
815      Int_t     copy;
816      static    Int_t   vol[4];
817      static    Float_t hits[21];
818      static    Float_t eloss, tlength;
819      static    Int_t   nPhotonsInStep;
820      static    Int_t   nPhotons; 
821      static    Int_t   numStep;
822      Float_t   ringNumber;
823      Float_t   destep, step;
824      
825      numStep += 1; 
826           
827 //   We keep only charged tracks :
828      
829      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return; 
830
831      static Int_t idV0R1 = gMC->VolId("V0R1");
832      static Int_t idV0L1 = gMC->VolId("V0L1");
833      static Int_t idV0R2 = gMC->VolId("V0R2");
834      static Int_t idV0L2 = gMC->VolId("V0L2");
835      static Int_t idV0R3 = gMC->VolId("V0R3");
836      static Int_t idV0L3 = gMC->VolId("V0L3");
837
838      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
839      vol[2]    = gMC->CurrentVolID(copy);
840      vol[3]    = copy;
841      
842      if      ( gMC->CurrentVolID(copy) == idV0R1 ||
843                gMC->CurrentVolID(copy) == idV0L1 )
844                ringNumber = 1.0;
845      else if ( gMC->CurrentVolID(copy) == idV0R2 ||
846                gMC->CurrentVolID(copy) == idV0L2 ) 
847                ringNumber = 2.0;  
848      else if ( gMC->CurrentVolID(copy) == idV0R3 ||
849                gMC->CurrentVolID(copy) == idV0L3 )
850                ringNumber = 3.0;
851      else
852                ringNumber = 0.0;
853
854      if  (  ringNumber > 0.5  ) { 
855      
856         destep    = gMC->Edep();
857         step      = gMC->TrackStep();
858         
859         nPhotonsInStep  = Int_t(destep / (fLightYield *1e-9) ); 
860         nPhotonsInStep  = gRandom->Poisson(nPhotonsInStep);
861         
862         eloss    += destep;
863         tlength  += step;        
864         
865         if  ( gMC->IsTrackEntering()  )  { 
866          
867             nPhotons  =  nPhotonsInStep;       
868             gMC->TrackPosition(fTrackPosition);
869             gMC->TrackMomentum(fTrackMomentum);
870             
871             Float_t pt  = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
872                                        fTrackMomentum.Py() * fTrackMomentum.Py() );
873                
874             hits[0]  = fTrackPosition.X();
875             hits[1]  = fTrackPosition.Y();
876             hits[2]  = fTrackPosition.Z();               
877             hits[3]  = Float_t (gMC->TrackPid()); 
878
879             hits[4]  = gMC->TrackTime();
880             hits[5]  = gMC->TrackCharge();
881             hits[6]  = fTrackMomentum.Theta()*TMath::RadToDeg();
882             hits[7]  = fTrackMomentum.Phi()*TMath::RadToDeg();
883             hits[8]  = ringNumber;
884          
885             hits[9]  = pt;
886             hits[10] = fTrackMomentum.P();
887             hits[11] = fTrackMomentum.Px();
888             hits[12] = fTrackMomentum.Py();
889             hits[13] = fTrackMomentum.Pz();
890             
891             TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
892             hits[14] = par->Vx();
893             hits[15] = par->Vy();
894             hits[16] = par->Vz();
895             
896             tlength  = 0.0;
897             eloss    = 0.0;
898             
899          }
900          
901          nPhotons  = nPhotons + nPhotonsInStep;
902          
903          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
904          
905          nPhotons  = nPhotons - Int_t( (Float_t(nPhotons) * fLightAttenuation * fnMeters) );     
906          nPhotons  = nPhotons - Int_t(  Float_t(nPhotons) * fFibToPhot );        
907          
908          hits[17] =   eloss;
909          hits[18] = tlength;
910          hits[19] = nPhotons;
911          hits[20] = GetCellId (vol, hits); 
912                  
913          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
914                  
915          tlength         = 0.0;
916          eloss           = 0.0; 
917          nPhotons        =   0;
918          nPhotonsInStep  =   0;
919          
920          numStep         =   0;  
921          } 
922     }
923       
924 }
925
926 //_____________________________________________________________________________
927 void AliVZEROv3::AddHit(Int_t track, Int_t *vol, Float_t *hits)
928 {
929   
930 //  Adds a VZERO hit
931   
932   TClonesArray &lhits = *fHits;
933   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
934 }
935
936 //_____________________________________________________________________________
937 void AliVZEROv3::AddDigits(Int_t *tracks, Int_t* digits) 
938 {
939
940 //  Adds a VZERO digit
941
942    TClonesArray  &ldigits = *fDigits;
943    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
944 }
945
946 //_____________________________________________________________________________
947 void AliVZEROv3::MakeBranch(Option_t *option)
948 {
949   
950 // Creates new branches in the current Root Tree
951     
952   char branchname[10];
953   sprintf(branchname,"%s",GetName());
954   AliDebug(2,Form("fBufferSize = %d",fBufferSize));
955   
956   const char *cH = strstr(option,"H");
957   
958   if (fHits   && TreeH() && cH) {
959     TreeH()->Branch(branchname,&fHits, fBufferSize);
960     AliDebug(2,Form("Making Branch %s for hits",branchname));
961   }     
962
963   const char *cD = strstr(option,"D");
964   
965   if (fDigits   && fLoader->TreeD() && cD) {
966     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
967     AliDebug(2,Form("Making Branch %s for digits",branchname));
968   }  
969    
970 }
971
972 //_____________________________________________________________________________
973 Int_t AliVZEROv3::GetCellId(Int_t *vol, Float_t *hits) 
974 {
975
976   //   Returns Id of scintillator cell
977   //   Right side from  0 to 35
978   //   Left  side from 36 to 71
979
980    Int_t index = vol[1];
981    fCellId     = 0;
982    
983    if (index < 10) index = index + 12; 
984    
985    if (hits[2] < 0.0) { 
986       index = (index - 10) + ( ( Int_t(hits[8]) - 1 ) * 12);
987       fCellId   = index;
988    }
989    else if (hits[2] > 0.0)
990    {
991       index = (index  + 26) + ( ( Int_t(hits[8]) - 1 ) * 12);
992       fCellId   = index;}
993           
994    return fCellId;
995 }