material cherenkov properties adopted to TGeo according Savannah bug #67031, done...
[u/mrichter/AliRoot.git] / T0 / AliT0v1.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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13  * provided "as is" without express or implied warranty.                  *
14  **************************************************************************/
15
16 /* $Id$ */
17
18 /////////////////////////////////////////////////////////////////////
19 //                                                                 //
20 // T0 ( T-zero) detector  version 1                             //
21 //
22 //Begin Html       
23 /*
24 <img src="gif/AliT0v1Class.gif">
25 */
26 //End Html
27 //                                                                  //
28 //                                                                  //
29 //////////////////////////////////////////////////////////////////////
30
31 #include <Riostream.h>
32 #include <stdlib.h>
33
34 #include "TGeoCompositeShape.h"
35 #include "TGeoManager.h"
36 #include "TGeoMatrix.h"
37 #include "TGeoPcon.h"
38 #include "TGeoTube.h"
39 #include <TGeoGlobalMagField.h>
40 #include <TGraph.h>
41 #include <TLorentzVector.h>
42 #include <TMath.h>
43 #include <TVirtualMC.h>
44
45 #include "AliLog.h"
46 #include "AliMagF.h"
47 #include "AliRun.h"
48
49 #include "AliT0hit.h"
50 #include "AliT0v1.h"
51 #include "AliT0Parameters.h"
52
53 #include "AliMC.h"
54 #include "AliCDBLocal.h"
55 #include "AliCDBStorage.h"
56 #include "AliCDBManager.h"
57 #include "AliCDBEntry.h"
58 #include "AliTrackReference.h"
59
60 ClassImp(AliT0v1)
61
62
63 //--------------------------------------------------------------------
64 AliT0v1::AliT0v1():  AliT0(),
65                      fIdSens1(0),
66                      fEffPMT(0x0)
67
68 {
69   //
70   // Standart constructor for T0 Detector version 0
71 }
72 //--------------------------------------------------------------------
73 AliT0v1::AliT0v1(const char *name, const char *title):
74   AliT0(name,title),
75   fIdSens1(0),
76   fEffPMT(0x0)
77
78 {
79   //
80   // Standart constructor for T0 Detector version 0
81   //
82   fIshunt = 2;
83   AliT0Parameters* param = AliT0Parameters::Instance();
84   for (Int_t i=0; i<24; i++){
85     TGraph* grEff = param ->GetPMTeff(i);
86     fEffPMT.AddAtAndExpand(grEff,i);
87   }
88 }
89 //_____________________________________________________________________________
90
91 AliT0v1::~AliT0v1() 
92 {
93   // desctructor  
94 }
95
96 //-------------------------------------------------------------------------
97 void AliT0v1::CreateGeometry()
98 {
99   //
100   // Create the geometry of T0 Detector version 0
101   //
102   // begin Html
103   /*
104    <img src="gif/AliT0v0.gif">
105   */
106   //
107
108
109    Int_t *idtmed = fIdtmed->GetArray();
110    /*
111    AliT0Parameters* param = AliT0Parameters::Instance();
112    param->Init();
113   Float_t zdetC = param->GetZposition(0);
114   Float_t zdetA = param->GetZposition(1);
115    */
116    Float_t zdetC = 69.7;
117    Float_t zdetA = 373.;
118
119   Int_t is;
120   Int_t idrotm[999];
121   Double_t x,y,z;
122   //C T0 mother volume
123   Float_t pstartR[18]={0., 360., 5., 
124                        -6.8, 4.25, 10., //-76.5+0.00+69.7
125                        //  -0.75 , 4.45, 10.,  // -76.5+6.05+69.7
126                        //  1.25   , 4.45, 10.,  //-76.5+8.05+69.7
127                        -0.75 , 4.5, 10.,  // -76.5+6.05+69.7
128                        1.25   , 4.5, 10.,  //-76.5+8.05+69.7
129                        1.25 , 5.1, 10, //-76.5+8.05+69.7 
130                        6.8 , 5.1, 10.};  //-62.9+0.00+69.7
131   
132   Float_t pstart[3]={4., 12.5,6.8};
133   Float_t pinstart[3]={0.,1.45,6.5};
134   Float_t ppmt[3]={0.,1.4,3.5};
135   Float_t ptop[3]={0.,1.,1.0};
136   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
137   Float_t ptopout[3]={1.,1.01, 1.};  //metal air around raiator for photos reflection 
138   Float_t pbot[3]={0.6,1.2,0.1};
139   Float_t pglass[3]={1.2,1.3,2.};
140   Float_t pcer[3]={0.9,1.1,1.35};
141   Float_t psteel[3]={0.9,1.1,0.15};
142   Float_t psupport1[3] = {4.51,4.52,4.0};//C kozhuh vnutri
143   Float_t psupport2[3] = {9.5,9.6,4.0};// snaruzhi  C
144   Float_t psupport3[3] = {4.52,9.5, 0.05};//kryshki  C
145   Float_t psupport5[3] = {1.44,1.45,6.5}; // stakanchik dlai feu  C
146   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
147   Float_t psupport7[3] = {1.44,1.45,0.4}; //kolechko snaruzhu stakanchika Al
148    
149   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
150     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
151   Float_t ppcon[70]; 
152     ppcon[0]  =   0;
153     ppcon[1]  = 360;
154     ppcon[2]  =  13;
155 //  1: 
156     ppcon[3]  =  7.2;
157     ppcon[4]  =   4.4;
158     ppcon[5]  =   4.5;
159 //  2
160     ppcon[6]  = 8.2;
161     ppcon[7]  = 4.4;
162     ppcon[8]  = 4.5;
163 //  3
164     ppcon[9]  = 8.2;
165     ppcon[10] = 4.4;
166     ppcon[11] = 5.1;
167
168 //  4
169
170     ppcon[12] = 8.3; 
171     ppcon[13] = 4.4;
172     ppcon[14] = 5.1;
173 //  5
174
175     ppcon[15] = 8.3;
176     ppcon[16] = 4.9;
177     ppcon[17] = 5.1;
178     
179 //  6
180     ppcon[18] = 15.; 
181     ppcon[19] = 4.9;
182     ppcon[20] = 5.1;
183     
184 //  7
185     ppcon[21] = 15.; 
186     ppcon[22] = 3.15  ;
187     ppcon[23] = 5.1;
188
189 /// 8
190     ppcon[24] = 15.01; 
191     ppcon[25] = 3.15;
192     ppcon[26] = 5.1;
193
194 /// 9
195     ppcon[27] = 15.01; 
196     ppcon[28] = 3.15;
197     ppcon[29] = 3.25;
198
199     
200 /// 9
201      ppcon[30] = 19.71;
202      ppcon[31] = 3.15;
203      ppcon[32] = 3.25; 
204 //  10
205     ppcon[33] = 19.8; 
206     ppcon[34] = 3.15;
207     ppcon[35] = 3.25;
208     //  11
209     ppcon[36] = 19.8;
210     ppcon[37] = 3.15;
211     ppcon[38] = 7.6;
212         
213    //  14
214
215     ppcon[39] =  19.99;
216     ppcon[40] =  3.15;
217     ppcon[41] =  7.6;
218
219
220     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
221     z = -zdetC;
222     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
223    
224 //-------------------------------------------------------------------
225  //  T0 volume 
226  //-------------------------------------------------------------------
227   
228     
229     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
230     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
231     // gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
232
233 //T0 interior
234    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
235    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);     
236           
237     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
238     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
239     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
240     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
241     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
242     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
243     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
244     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
245    
246  
247
248    //non-absorber side support  and T0A !!!!!!!!
249     
250     TGeoPcon * supPgon = new TGeoPcon("0supPgon",0.,360.,4);
251     supPgon->DefineSection(0, 0, 4.1, 5.5);
252     supPgon->DefineSection(1, 10.5 , 4.1, 5.5);
253     supPgon->DefineSection(2, 10.5 , 4.1, 4.9);
254     supPgon->DefineSection(3, 12.5 , 4.1, 4.9);
255     TGeoTranslation *trPgon = new TGeoTranslation("0trPgon",0,0,0);
256     trPgon->RegisterYourself();
257  
258     TGeoVolumeAssembly * stlin = new TGeoVolumeAssembly("0STL");//empty segment
259     TGeoVolume *ins = gGeoManager->GetVolume("0INS");
260
261     new TGeoTube("0HOLE", 0, 1.51, 6.5);
262     TGeoTranslation *tr [12];
263     Double_t angle  = 2 * TMath::Pi() / 12;
264     Char_t nameTr[40];
265     for (Int_t itr=0; itr<12; itr++) {
266       sprintf (nameTr,"0TR%i",itr+1);
267       x = 6.5 * TMath::Sin(itr * angle);
268       y = 6.5 * TMath::Cos(itr * angle);
269       tr[itr] = new TGeoTranslation(nameTr,x,y,6.5);
270       tr[itr]->RegisterYourself();
271       stlin->AddNode(ins,itr+13,tr[itr]);
272     }
273     TGeoCompositeShape *supsh = new TGeoCompositeShape("0supsh","0supPgon:0trPgon-(0HOLE:0TR1+0HOLE:0TR2+0HOLE:0TR3+0HOLE:0TR4+0HOLE:0TR5+0HOLE:0TR6+0HOLE:0TR7+0HOLE:0TR8+0HOLE:0TR9+0HOLE:0TR10+0HOLE:0TR11+0HOLE:0TR12)");
274   
275     TGeoMedium *medal = gGeoManager->GetMedium("T0_Aluminium$");
276     TGeoVolume *supA = new TGeoVolume("0SUA",supsh,medal);
277     stlin->AddNode(supA,1,new TGeoTranslation(0,0,0));
278  
279     TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
280     alice->AddNode(stlin,1,new TGeoTranslation(0,0, zdetA ));
281             
282     // T0A finished
283
284     //T0C 
285 // first ring: 12 units of Scintillator+PMT+divider
286   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.6 / zdetC);
287   Float_t phi[3];
288    for (is=0; is<12; is++)
289       {  
290
291         x = 6.6 * TMath::Sin(is * angle);
292         y = 6.6 * TMath::Cos(is * angle);
293         
294         phi[0] = -30 * is;
295         phi[1] = 90 - is * 30;
296         phi[2] = 90 - is * 30;
297         for (Int_t j = 0; j < 3; j++)
298           if (phi[j] < 0)  phi[j] += 360;
299         
300         AliMatrix (idrotm[902 + is], 90.,         phi[0],
301                    90. + theta, phi[1],
302                    theta,       phi[2]);  
303         z=-pstart[2]+pinstart[2]+0.3;
304         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
305   }     
306      
307    x=0;
308    y=0;
309    //   z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
310    z=-pinstart[2]+ppmt[2]+0.08; //+psupport6[2];
311    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
312    // PMT
313    
314    // Entry window (glass)
315    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
316    z=-ppmt[2]+ptop[2];
317    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
318    //"metal" air volume to simulate reclection  
319    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); 
320    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
321
322    //Fotokatod
323    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3); 
324    z = -ppmt[2] + 2 * ptop[2] + preg[2]; 
325    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); 
326   // Bottom glass
327    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
328    z=ppmt[2]-pbot[2];
329    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
330    // Side cylinder glass
331    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
332    z=ppmt[2]-pglass[2];
333    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
334    //PMT electrodes support structure
335    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
336    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
337    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
338    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
339    z +=psteel[2]+pcer[2];
340    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
341     
342    //Support absorber (C) side
343    z=-pstart[2]+psupport1[2];//  0.05; //0.1;
344    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
345    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
346    z=-pstart[2]+psupport3[2];//  - 0.1;
347    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
348    z=-pstart[2]+2.*psupport1[2];//+0.1;
349    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
350    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu 
351    z=-pinstart[2]+psupport6[2]; //-0.1;
352    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka 
353    
354    z=pinstart[2]-psupport7[2];
355    //  gMC->Gspos("0SU8",1,"0SU6",0,0,z,0,"ONLY"); //Al kolechko
356    
357    
358    Float_t par[3];
359    par[0]=4.4;
360    par[1]=4.5;
361    par[2]=0.5;
362    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
363    z=ppcon[3]+par[2];
364    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY"); 
365    z += par[2];
366    par[0]=4.4;
367    par[1]=5.1;
368    par[2]=0.05;
369    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
370    z += par[2];
371    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY"); 
372    z=z+par[2];
373    par[0]=4.9;
374    par[1]=5.0;
375    par[2]=6.7/2;
376     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
377     z += par[2];
378     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY"); 
379     z += par[2];
380    
381     par[0]=3.15;
382     par[1]=4.9;
383     par[2]=0.01/2;
384
385     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
386     
387      z += par[2];
388      //  z -= par[2];
389     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY"); 
390     z=z+par[2];
391     par[0]=3.15;
392     par[1]=3.16;
393     par[2]=4.7/2;
394     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
395     z += par[2];
396     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY"); 
397     z=z+par[2];
398     par[0]=3.16; // eta chast' prikruchena k absorberu
399     par[1]=7.4;
400     par[2]=0.01;
401     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
402     //   z += par[2];
403    z = ppcon[39] - par[2];
404     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY"); 
405     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
406     par[1]=7.4;
407     par[2]=0.01;
408     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
409     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"MANY"); 
410  
411    
412
413  
414 }    
415 //------------------------------------------------------------------------
416 void AliT0v1::AddAlignableVolumes() const
417 {
418   //
419   // Create entries for alignable volumes associating the symbolic volume
420   // name with the corresponding volume path. Needs to be syncronized with
421   // eventual changes in the geometry.
422   //
423
424   // TString volPath;
425   // TString symName, sn;
426   
427
428
429
430   TString volPath;
431   TString symName, sn;
432
433   TString vpA  = "/ALIC_1/0STL_1/0INS_";
434   TString vpC  = "/ALIC_1/0STR_1/0INS_";
435   TString vpInside  = "/0PMT_1/0TOP_1";
436   TString vpAalign = "/ALIC_1/0STL_1";
437   TString vpCalign = "/ALIC_1/0STR_1";
438   
439   for (Int_t imod=0; imod<26; imod++)
440     {
441       if (imod < 24)
442       {
443        if (imod < 12)
444          { volPath  = vpC; sn="T0/C/PMT";}
445         else
446           { volPath  = vpA; sn="T0/A/PMT";}
447       volPath += imod+1;
448       volPath += vpInside;
449       symName = sn;
450      symName += imod+1;
451      }
452      else if (imod == 24)
453        {volPath  = vpCalign; symName="/ALIC_1/0STR_1";}
454      else
455        {volPath  = vpAalign; symName="/ALIC_1/0STL_1";}
456
457       AliDebug(2,"--------------------------------------------");
458       AliDebug(2,Form("Alignable object %d", imod));
459       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
460       AliDebug(2,Form("symName=%s\n",symName.Data()));
461       AliDebug(2,"--------------------------------------------");
462       if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
463        AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
464 symName.Data(),volPath.Data()));
465    }
466 }   
467 //------------------------------------------------------------------------
468 void AliT0v1::CreateMaterials()
469 {
470    Int_t isxfld   = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
471    Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
472    //   Float_t a,z,d,radl,absl,buf[1];
473    // Int_t nbuf;
474 // AIR
475                                                                                 
476    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
477    Float_t zAir[4]={6.,7.,8.,18.};
478    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
479    Float_t dAir = 1.20479E-3;
480    Float_t dAir1 = 1.20479E-11;
481                                                                                
482 // Scintillator CH
483    Float_t ascin[2]={1.01,12.01};
484    Float_t zscin[2]={1,6};
485    Float_t wscin[2]={1,1};
486    Float_t denscin=1.03;
487 //Lucite C(CH3)CO2CH3
488    Float_t alucite[3]={1.01,12.01,15.999};
489    Float_t zlucite[3]={1,6,8};
490    Float_t wlucite[3]={8,5,2};
491    Float_t denlucite=1.16;
492  // PMT glass SiO2
493    Float_t aglass[2]={28.0855,15.9994};
494    Float_t zglass[2]={14.,8.};
495    Float_t wglass[2]={1.,2.};
496    Float_t dglass=2.65;
497 // Ceramic   97.2% Al2O3 , 2.8% SiO2
498    // Float_t wcer[2]={0.972,0.028};
499    Float_t aCeramic[2]  = { 26.981539,15.9994 };
500    Float_t zCeramic[2]  = { 13.,8. };
501    Float_t wCeramic[2]  = { 2.,3. };
502    Float_t denscer  = 3.6;
503
504 // Brass 80% Cu, 20% Zn
505    Float_t abrass[2] = {63.546,65.39};
506    Float_t zbrass[2] = {29,30};
507    Float_t wbrass[2] = {0.8,0.2};
508    Float_t denbrass=8.96;
509
510 //Ribber C6H12S
511    Float_t aribber[3] = {12.,1.,32.};
512    Float_t zribber[3] = {6.,1.,16.};
513    Float_t wribber[3] = {6.,12.,1.};
514    Float_t denribber=0.8;
515 // Support inside 
516    Float_t asupport[2] = {12.,1.};
517    Float_t zsupport[2] = {6.,1.};
518    Float_t wsupport[2] = {1.,1.};
519    Float_t densupport=0.1;
520     
521 //*** Definition Of avaible T0 materials ***
522    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
523    AliMixture(1, "Vacuum$", aAir, zAir, dAir1,4,wAir);
524    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
525    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999); 
526    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999); 
527
528    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
529    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
530    /* 
531   char namate[21]="";
532   
533    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
534    acer[0]=a;  
535
536    zcer[0]=z;
537    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
538    acer[1]=a;
539    zcer[1]=z;
540    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
541    */ 
542     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
543    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
544    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
545    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
546    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
547    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
548    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
549     AliMixture(22, "T0 Opt Air$", aAir, zAir, dAir,4,wAir);
550    AliMixture(23, "T0 Opt Air Next$", aAir, zAir, dAir,4,wAir);
551    
552    AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
553    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
554    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
555    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
556    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
557    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
558    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
559    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
560    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
561    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
562    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
563    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
564    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
565    AliMedium(17, "T0 OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
566    AliMedium(18, "T0 OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
567     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
568    
569    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
570    
571    
572 }
573 //---------------------------------------------------------------------
574 void AliT0v1::DrawDetector()
575 {
576 //
577 // Draw a shaded view of the Forward multiplicity detector version 0
578 //
579   
580   //Set ALIC mother transparent
581   gMC->Gsatt("ALIC","SEEN",0);
582   //
583   //Set volumes visible
584   //  gMC->Gsatt("0STR","SEEN",0);
585   //  gMC->Gsatt("0INS","SEEN",0);
586   // gMC->Gsatt("0PMT","SEEN",1);
587   // gMC->Gsatt("0DIV","SEEN",1);
588   //
589   gMC->Gdopt("hide","off");
590   gMC->Gdopt("shad","on");
591   gMC->SetClipBox(".");
592   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
593   gMC->DefaultRange();
594   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
595   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
596   gMC->Gdhead(1111,"T-Zero detector");
597   gMC->Gdopt("hide","off");
598 }
599
600 //-------------------------------------------------------------------
601 void AliT0v1::DefineOpticalProperties()
602 {
603 // Optical properties definition.
604    Int_t *idtmed = fIdtmed->GetArray();
605 // Definition Cherenkov parameters
606    int i;
607    const Int_t kNbins=31;
608    
609    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
610    Double_t efficMet[kNbins], aReflMet[kNbins];
611            
612    // quartz 20mm
613    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4, 
614                              25.9, 25.3, 24.9, 24.5, 23.7, 
615                              23.2, 22.8, 22.4, 21.8, 21.3,
616                              22.8, 22.1, 21.7, 21.2, 20.5, 
617                              19.9, 19.3, 18.7, 18.0, 17.1, 
618                              16.3, 15.3, 14.3, 14.3   };
619           
620    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
621                              4.48, 4.58, 4.69, 4.81, 4.93, 
622                              5.05, 5.19, 5.33, 5.48, 5.63,
623                              5.8,  5.97, 6.16, 6.36, 6.57, 
624                              6.8,  7.04, 7.3,  7.58, 7.89, 
625                              8.22, 8.57, 8.97, 9.39 };  
626   Double_t dPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
627                              4.48, 4.58, 4.69, 4.81, 4.93,
628                              5.05, 5.19, 5.33, 5.48, 5.63,
629                              5.8,  5.97, 6.16, 6.36, 6.57,
630                              6.8,  7.04, 7.3,  7.58, 7.89,
631                              8.22, 8.57, 8.97, 9.39 };
632
633    /*     
634    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
635                               0.21, 0.22, 0.23, 0.24, 0.26, 
636                               0.27, 0.29, 0.30, 0.29, 0.29, 
637                               0.28, 0.28, 0.27, 0.26, 0.25, 
638                               0.25, 0.23, 0.20, 0.19, 0.17,
639                               0.17, 0.17, 0.2, 0.23};
640    */     
641    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
642  for(i=0;i<kNbins;i++)
643     {
644       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV   
645       rindexAir[i]=0.0001;
646       rindexSiO2[i]=1.458; //refractive index for qwarts
647       rindexCathodeNext[i]=0;
648       efficAll[i]=1.;
649       efficMet[i]=0.;
650       aReflMet[i]=1.;
651       //      aAbsSiO2[i]=28.5; //quartz 30mm
652       absorAir[i]=0.3;      
653       absorbCathodeNext[i]=0;
654
655     }
656   
657   
658    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
659    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
660    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
661   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
662    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
663
664    //Define a boarder for radiator optical properties
665    gMC->DefineOpSurface("surfRd", kUnified /*kGlisur*/,kDielectric_metal,kPolished, 0.);
666    gMC->SetMaterialProperty("surfRd", "EFFICIENCY", kNbins, dPckov, efficMet);
667    gMC->SetMaterialProperty("surfRd", "REFLECTIVITY", kNbins, dPckov, aReflMet);
668    gMC->SetBorderSurface("0TOPborder", "0TOP",1,"0TOO",1, "surfRd");
669
670
671 }
672
673 //-------------------------------------------------------------------
674 void AliT0v1::Init()
675 {
676 // Initialises version 0 of the Forward Multiplicity Detector
677 //
678   AliT0::Init();
679   fIdSens1=gMC->VolId("0REG");
680
681    AliDebug(1,Form("%s: *** T0 version 1 initialized ***\n",ClassName()));
682 }
683
684 //-------------------------------------------------------------------
685
686 void AliT0v1::StepManager()
687 {
688   //
689   // Called for every step in the T0 Detector
690   //
691   Int_t id,copy,copy1;
692   static Float_t hits[6];
693   static Int_t vol[2];
694   TLorentzVector pos;
695   TLorentzVector mom;
696   
697   //   TClonesArray &lhits = *fHits;
698   
699   if(!gMC->IsTrackAlive()) return; // particle has disappeared
700   
701   id=gMC->CurrentVolID(copy);
702   
703   // Check the sensetive volume
704   if(id==fIdSens1 ) { 
705     if(gMC->IsTrackEntering()) {
706       gMC->CurrentVolOffID(2,copy);
707       vol[1]=copy;
708       gMC->CurrentVolOffID(3,copy1);
709       vol[0]=copy1;
710       gMC->TrackPosition(pos);
711       hits[0] = pos[0];
712       hits[1] = pos[1];
713       hits[2] = pos[2];
714       if(pos[2]<0) vol[0] = 2;
715       if(pos[2]>=0) vol[0] = 1; 
716       
717       Float_t etot=gMC->Etot();
718       hits[3]=etot;
719       Int_t iPart= gMC->TrackPid();
720       Int_t partID=gMC->IdFromPDG(iPart);
721       hits[4]=partID;
722       Float_t ttime=gMC->TrackTime();
723       hits[5]=ttime*1e12;
724       if (gMC->TrackPid() == 50000050)   // If particles is photon then ...
725         {
726           if(RegisterPhotoE(vol[1]-1,hits[3])) {
727             AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
728             // Create a track reference at the exit of photocatode
729           }         
730         }
731
732       //charge particle 
733       if ( gMC->TrackCharge() )
734         AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kT0);
735       
736         /*              
737                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
738                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
739                gMC->IsTrackAlive(),
740                gMC->IsTrackDisappeared(),
741                gMC->IsTrackEntering(),
742                gMC->IsTrackExiting(),
743                gMC->IsTrackInside(),
744                gMC->IsTrackOut(),
745                gMC->IsTrackStop(),
746                gMC->IsNewTrack());
747         */
748     }// trck entering           
749   } //sensitive
750   
751 }
752
753
754
755 //------------------------------------------------------------------------
756 Bool_t AliT0v1::RegisterPhotoE(Int_t ipmt,Double_t energy)
757 {
758
759   
760   //  Float_t hc=197.326960*1.e6; //mev*nm
761   Double_t hc=1.973*1.e-6; //gev*nm
762   Float_t lambda=hc/energy;
763   Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
764   Double_t  p = gRandom->Rndm();
765
766   if (p > eff)
767     return kFALSE;
768   
769   return kTRUE;
770 }
771
772 //----------------------------------------------------------------------------
773
774
775
776
777
778