a9b1a3200104f43e71ede2ba2d1a32710ac60ad0
[u/mrichter/AliRoot.git] / START / AliSTARTv1.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 // START ( T-zero) detector  version 1                             //
21 //
22 //Begin Html       
23 /*
24 <img src="gif/AliSTARTv1Class.gif">
25 */
26 //End Html
27 //                                                                  //
28 //                                                                  //
29 //////////////////////////////////////////////////////////////////////
30
31 #include <Riostream.h>
32 #include <stdlib.h>
33
34 #include <TGeometry.h>
35 #include <TLorentzVector.h>
36 #include <TMath.h>
37 #include <TNode.h>
38 #include <TTUBE.h>
39 #include <TVirtualMC.h>
40 #include "TGeoManager.h"
41
42 #include "AliLog.h"
43 #include "AliMagF.h"
44 #include "AliRun.h"
45
46 #include "AliSTARThit.h"
47 #include "AliSTARTv1.h"
48 #include "AliSTARTParameters.h"
49
50 #include "AliMC.h"
51 #include "AliCDBLocal.h"
52 #include "AliCDBStorage.h"
53 #include "AliCDBManager.h"
54 #include "AliCDBEntry.h"
55
56 ClassImp(AliSTARTv1)
57
58 //--------------------------------------------------------------------
59 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
60   AliSTART(name,title),
61   fIdSens1(0)
62 {
63   //
64   // Standart constructor for START Detector version 0
65   //
66   fIshunt = 2;
67 }
68 //_____________________________________________________________________________
69
70 AliSTARTv1::~AliSTARTv1() 
71 {
72   // desctructor  
73 }
74
75 //-------------------------------------------------------------------------
76 void AliSTARTv1::CreateGeometry()
77 {
78   //
79   // Create the geometry of START Detector version 0
80   //
81   // begin Html
82   /*
83    <img src="gif/AliSTARTv0.gif">
84   */
85   //
86
87
88    Int_t *idtmed = fIdtmed->GetArray();
89   
90   AliSTARTParameters* param = AliSTARTParameters::Instance();
91   param->Init();
92   Float_t zdetC = param->GetZposition(0);
93   Float_t zdetA = param->GetZposition(1);
94   
95   Int_t is;
96   Int_t idrotm[999];
97   Float_t x,y,z;
98   //C T0 mother volume
99   Float_t pstartR[18]={0., 360., 5., 
100                        -6.8, 4.25, 10., //-76.5+0.00+69.7
101                        -0.75 , 4.5, 10.,  // -76.5+6.05+69.7
102                        1.25   , 4.5, 10.,  //-76.5+8.05+69.7
103                        1.25 , 5.1, 10., //-76.5+8.05+69.7 
104                        6.8 , 5.1, 10.};  //-62.9+0.00+69.7
105   
106   Float_t pstart[3]={4.29, 12.5,6.8};
107   Float_t pinstart[3]={0.,1.6,6.5};
108   Float_t ppmt[3]={0.,1.5,3.5};
109   Float_t ptop[3]={0.,1.,1.0};
110   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
111   Float_t ptopout[3]={1.,1.01, 1.};  //metal air around raiator for photos reflection 
112   Float_t pbot[3]={0.6,1.2,0.1};
113   Float_t pglass[3]={1.2,1.3,2.};
114   Float_t pcer[3]={0.9,1.1,1.35};
115   Float_t psteel[3]={0.9,1.1,0.15};
116   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
117   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
118   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
119   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
120   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
121   Float_t psupport7[3] = {1.5,1.6,0.4}; //kolechko snaruzhu stakanchika Al
122    
123   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
124     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
125   Float_t ppcon[70]; 
126     ppcon[0]  =   0;
127     ppcon[1]  = 360;
128     ppcon[2]  =  13;
129 //  1: 
130     ppcon[3]  =  7.2; // 14.1/2;
131     ppcon[4]  =   4.4;
132     ppcon[5]  =   4.5;
133 //  2
134     ppcon[6]  = ppcon[3]+1.;
135     ppcon[7]  =   4.4;
136     ppcon[8]  =   4.5;
137 //  3
138     ppcon[9]  = ppcon[6];
139     ppcon[10] =   4.4;
140     ppcon[11] =   5.1;
141
142 //  4
143
144     ppcon[12]  = ppcon[9]+0.1;
145     ppcon[13] =   4.4;
146     ppcon[14] =   5.1;
147 //  5
148
149     ppcon[15]  = ppcon[12];
150     ppcon[16] =   4.9;
151     ppcon[17] =   5.1;
152     
153 //  6
154 //    ppcon[18]  = ppcon[15]+6.9;
155     ppcon[18]  = ppcon[15]+6.7;
156     ppcon[19] =   4.9;
157     ppcon[20] =   5.1;
158     
159 //  7
160     ppcon[21]  = ppcon[18];
161     ppcon[22] =   4.9;
162     ppcon[23] =   5.1;
163
164 /// 8
165     ppcon[24]  = ppcon[21]+0.01;
166     ppcon[25] =   3.15;
167     ppcon[26] =   3.25;
168     //   ppcon[25] =   2.25;
169     // ppcon[26] =   2.33;
170     
171 /// 9
172     ppcon[27]  = ppcon[24];
173     ppcon[28] =   ppcon[25];
174     ppcon[29] =  ppcon[26] ;
175     
176 //  10
177 //    ppcon[30]  = ppcon[27]+4.5;
178     ppcon[30]  = ppcon[27]+4.7;
179     ppcon[31] =   2.3;
180     ppcon[32] =  ppcon[26] ;
181
182 //  11
183     ppcon[33] = ppcon[30];
184     //    ppcon[34] =   3.15;
185     ppcon[34] =   2.3;
186     ppcon[35] =  ppcon[26] ;
187     
188 //  12
189     ppcon[36]  = ppcon[33];
190     ppcon[37] =   ppcon[34] ;
191     ppcon[38] =   7.6;
192     
193     //  13
194     ppcon[39]  = ppcon[33]+0.2;
195     ppcon[40] =   ppcon[34] ;
196     ppcon[41] =   7.6;
197     
198 //  14
199 //    ppcon[39]  = ppcon[36];
200 //    ppcon[40] =   3.15;
201 //    ppcon[41] =   7.6;
202
203
204
205     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
206     //    gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,38);
207     z=-zdetC;
208     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
209
210  //-------------------------------------------------------------------
211  //  START volume 
212  //-------------------------------------------------------------------
213   
214     
215     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
216     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
217     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
218     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
219
220 //START interior
221    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
222    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);     
223           
224     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
225     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
226     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
227     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
228     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
229     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
230     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
231     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
232              
233 // first ring: 12 units of Scintillator+PMT+divider
234   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetC);
235   Float_t angle  = 2 * TMath::Pi() / 12;
236   Float_t phi[3];
237     
238    for (is=0; is<12; is++)
239       {  
240
241         x = 6.5 * TMath::Sin(is * angle);
242         y = 6.5 * TMath::Cos(is * angle);
243         
244         phi[0] = -30 * is;
245         phi[1] = 90 - is * 30;
246         phi[2] = 90 - is * 30;
247         for (Int_t j = 0; j < 3; j++)
248           if (phi[j] < 0)  phi[j] += 360;
249         
250         AliMatrix (idrotm[902 + is], 90.,         phi[0],
251                    90. + theta, phi[1],
252                    theta,       phi[2]);  
253         z=-pstart[2]+pinstart[2]+0.2;
254         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
255         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
256       } 
257    
258       
259    x=0;
260    y=0;
261     z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
262    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
263    // PMT
264    
265    // Entry window (glass)
266    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
267    z=-ppmt[2]+ptop[2];
268    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
269    //"metal" air volume to simulate reclection  
270    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); 
271    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
272
273    //Fotokatod
274    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3); 
275    z = -ppmt[2] + 2 * ptop[2] + preg[2]; 
276    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); 
277   // Bottom glass
278    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
279    z=ppmt[2]-pbot[2];
280    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
281    // Side cylinder glass
282    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
283    z=ppmt[2]-pglass[2];
284    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
285    //PMT electrodes support structure
286    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
287    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
288    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
289    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
290    z +=psteel[2]+pcer[2];
291    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
292     
293    //Support  left side
294    z=-pstart[2]+psupport1[2]+0.1;
295    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
296    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
297    z=-pstart[2]+psupport3[2]+0.1;
298    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
299    z=-pstart[2]+2.*psupport1[2]-0.05;//+0.1;
300    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
301    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu 
302    z=-pinstart[2]+psupport6[2];
303    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka 
304    
305    z=pinstart[2]-psupport7[2];
306    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
307    
308    
309    Float_t par[3];
310    par[0]=4.4;
311    par[1]=4.5;
312    par[2]=0.5;
313    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
314    z=ppcon[3]+par[2];
315    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY"); 
316    z += par[2];
317    par[0]=4.4;
318    par[1]=5.1;
319    par[2]=0.05;
320    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
321    z += par[2];
322    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY"); 
323    z=z+par[2];
324    par[0]=4.9;
325    par[1]=5.0;
326    par[2]=6.7/2;
327     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
328     z += par[2];
329     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY"); 
330     z += par[2];
331    
332      par[0]=3.15;
333     par[1]=4.9;
334     par[2]=0.1/2;
335     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
336     
337     z += par[2];
338     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY"); 
339     z=z+par[2];
340     par[0]=3.15;
341     par[1]=3.16;
342     par[2]=4.7/2;
343     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
344     z += par[2];
345     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY"); 
346     z=z+par[2];
347     par[0]=3.16; // eta chast' prikruchena k absorberu
348     par[1]=7.5;
349     par[2]=0.1;
350     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
351     z += par[2];
352     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY"); 
353     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
354     par[1]=7.5;
355     par[2]=0.01;
356     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
357     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY"); 
358          
359  
360 }    
361 //------------------------------------------------------------------------
362 void AliSTARTv1::AddAlignableVolumes() const
363 {
364   //
365   // Create entries for alignable volumes associating the symbolic volume
366   // name with the corresponding volume path. Needs to be syncronized with
367   // eventual changes in the geometry.
368   //
369
370   TString volPath;
371   TString symName, sn;
372
373   TString vpA  = "ALIC_1/0STL_1/0INS_";
374   TString vpC  = "ALIC_1/0STR_1/0INS_";
375   TString vpInside  = "/0PMT_1/OTOP_1";
376
377
378   for (Int_t imod=0; imod<24; imod++)
379     {
380       if (imod < 12) 
381         {volPath  = vpA; sn="START/A/PMT";}
382       else  
383         {volPath  = vpC; sn="START/C/PMT";}
384       volPath += imod+1;
385       volPath += vpInside;
386       
387       symName = sn;
388       symName += imod+1;
389       
390       AliDebug(2,"--------------------------------------------");
391       AliDebug(2,Form("Alignable object %d", imod));
392       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
393       AliDebug(2,Form("symName=%s\n",symName.Data()));
394       AliDebug(2,"--------------------------------------------");
395       gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data());
396     }
397 }   
398 //------------------------------------------------------------------------
399 void AliSTARTv1::CreateMaterials()
400 {
401    Int_t isxfld   = gAlice->Field()->Integ();
402    Float_t sxmgmx = gAlice->Field()->Max();
403    //   Float_t a,z,d,radl,absl,buf[1];
404    // Int_t nbuf;
405    Int_t *idtmed = fIdtmed->GetArray();
406
407 // AIR
408                                                                                 
409    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
410    Float_t zAir[4]={6.,7.,8.,18.};
411    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
412    Float_t dAir = 1.20479E-3;
413                                                                                 
414 // Scintillator CH
415    Float_t ascin[2]={1.01,12.01};
416    Float_t zscin[2]={1,6};
417    Float_t wscin[2]={1,1};
418    Float_t denscin=1.03;
419 //Lucite C(CH3)CO2CH3
420    Float_t alucite[3]={1.01,12.01,15.999};
421    Float_t zlucite[3]={1,6,8};
422    Float_t wlucite[3]={8,5,2};
423    Float_t denlucite=1.16;
424  // PMT glass SiO2
425    Float_t aglass[2]={28.0855,15.9994};
426    Float_t zglass[2]={14.,8.};
427    Float_t wglass[2]={1.,2.};
428    Float_t dglass=2.65;
429 // Ceramic   97.2% Al2O3 , 2.8% SiO2
430    // Float_t wcer[2]={0.972,0.028};
431    Float_t aCeramic[2]  = { 26.981539,15.9994 };
432    Float_t zCeramic[2]  = { 13.,8. };
433    Float_t wCeramic[2]  = { 2.,3. };
434    Float_t denscer  = 3.6;
435
436 // Brass 80% Cu, 20% Zn
437    Float_t abrass[2] = {63.546,65.39};
438    Float_t zbrass[2] = {29,30};
439    Float_t wbrass[2] = {0.8,0.2};
440    Float_t denbrass=8.96;
441
442 //Ribber C6H12S
443    Float_t aribber[3] = {12.,1.,32.};
444    Float_t zribber[3] = {6.,1.,16.};
445    Float_t wribber[3] = {6.,12.,1.};
446    Float_t denribber=0.8;
447 // Support inside 
448    Float_t asupport[2] = {12.,1.};
449    Float_t zsupport[2] = {6.,1.};
450    Float_t wsupport[2] = {1.,1.};
451    Float_t densupport=0.1;
452     
453 //*** Definition Of avaible START materials ***
454    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
455    AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
456    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
457    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999); 
458    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999); 
459
460    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
461    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
462    /* 
463   char namate[21]="";
464   
465    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
466    acer[0]=a;  
467
468    zcer[0]=z;
469    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
470    acer[1]=a;
471    zcer[1]=z;
472    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
473    */ 
474     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
475    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
476    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
477    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
478    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
479    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
480    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
481     AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
482    AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
483    
484    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
485    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
486    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
487    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
488    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
489    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
490    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
491    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
492    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
493    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
494    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
495    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
496    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
497    AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
498    AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
499     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
500
501
502 // Definition Cherenkov parameters
503    int i;
504    const Int_t kNbins=31;
505    
506    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
507             
508    // quartz 20mm
509    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4, 
510                              25.9, 25.3, 24.9, 24.5, 23.7, 
511                              23.2, 22.8, 22.4, 21.8, 21.3,
512                              22.8, 22.1, 21.7, 21.2, 20.5, 
513                              19.9, 19.3, 18.7, 18.0, 17.1, 
514                              16.3, 15.3, 14.3, 14.3   };
515           
516    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
517                              4.48, 4.58, 4.69, 4.81, 4.93, 
518                              5.05, 5.19, 5.33, 5.48, 5.63,
519                              5.8,  5.97, 6.16, 6.36, 6.57, 
520                              6.8,  7.04, 7.3,  7.58, 7.89, 
521                              8.22, 8.57, 8.97, 9.39 };  
522    /*     
523    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
524                               0.21, 0.22, 0.23, 0.24, 0.26, 
525                               0.27, 0.29, 0.30, 0.29, 0.29, 
526                               0.28, 0.28, 0.27, 0.26, 0.25, 
527                               0.25, 0.23, 0.20, 0.19, 0.17,
528                               0.17, 0.17, 0.2, 0.23};
529    */     
530    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
531   for(i=0;i<kNbins;i++)
532     {
533       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV   
534       rindexAir[i]=0;
535       rindexSiO2[i]=1.458; //refractive index for qwarts
536       rindexCathodeNext[i]=0;
537       efficAll[i]=1.;
538
539       //      aAbsSiO2[i]=28.5; //quartz 30mm
540       absorAir[i]=0.3;      
541       absorbCathodeNext[i]=0;
542
543     }
544   
545   
546    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
547    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
548    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
549   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
550    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
551    
552    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
553    
554    
555 }
556 //---------------------------------------------------------------------
557 void AliSTARTv1::DrawDetector()
558 {
559 //
560 // Draw a shaded view of the Forward multiplicity detector version 0
561 //
562   
563   //Set ALIC mother transparent
564   gMC->Gsatt("ALIC","SEEN",0);
565   //
566   //Set volumes visible
567   //  gMC->Gsatt("0STR","SEEN",0);
568   //  gMC->Gsatt("0INS","SEEN",0);
569   // gMC->Gsatt("0PMT","SEEN",1);
570   // gMC->Gsatt("0DIV","SEEN",1);
571   //
572   gMC->Gdopt("hide","off");
573   gMC->Gdopt("shad","on");
574   gMC->SetClipBox(".");
575   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
576   gMC->DefaultRange();
577   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
578   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
579   gMC->Gdhead(1111,"T-Zero detector");
580   gMC->Gdopt("hide","off");
581 }
582
583 //-------------------------------------------------------------------
584 void AliSTARTv1::Init()
585 {
586 // Initialises version 0 of the Forward Multiplicity Detector
587 //
588 //Int_t *idtmed  = gAlice->Idtmed();
589   AliSTART::Init();
590   fIdSens1=gMC->VolId("0REG");
591
592    AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
593
594 }
595
596 //-------------------------------------------------------------------
597
598 void AliSTARTv1::StepManager()
599 {
600   //
601   // Called for every step in the START Detector
602   //
603   Int_t id,copy,copy1;
604   static Float_t hits[6];
605   static Int_t vol[2];
606   TLorentzVector pos;
607   
608   //   TClonesArray &lhits = *fHits;
609   
610   if(!gMC->IsTrackAlive()) return; // particle has disappeared
611   
612   
613     // If particles is photon then ...
614   
615  if (gMC->TrackPid() == 50000050)
616   {
617       id=gMC->CurrentVolID(copy);
618       
619       
620       // Check the sensetive volume
621       if(id==fIdSens1 ) { 
622         if(gMC->IsTrackEntering()) {
623           gMC->CurrentVolOffID(2,copy);
624           vol[1]=copy;
625           gMC->CurrentVolOffID(3,copy1);
626           vol[0]=copy1;
627           gMC->TrackPosition(pos);
628           hits[0] = pos[0];
629           hits[1] = pos[1];
630           hits[2] = pos[2];
631           if(pos[2]<0) vol[0]=2;
632           if(pos[2]>=0) vol[0]=1; 
633           
634           Float_t etot=gMC->Etot();
635           hits[3]=etot;
636           Int_t iPart= gMC->TrackPid();
637           Int_t partID=gMC->IdFromPDG(iPart);
638           hits[4]=partID;
639           Float_t ttime=gMC->TrackTime();
640           hits[5]=ttime*1e12;
641           AddHit(fIshunt,vol,hits);
642           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
643         }
644         /*              
645                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
646                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
647                gMC->IsTrackAlive(),
648                gMC->IsTrackDisappeared(),
649                gMC->IsTrackEntering(),
650                gMC->IsTrackExiting(),
651                gMC->IsTrackInside(),
652                gMC->IsTrackOut(),
653                gMC->IsTrackStop(),
654                gMC->IsNewTrack());
655         */              
656       } //sensitive
657   } //photon
658 }
659
660
661
662
663
664
665
666