778244b4eedeee8ed4cccbb767dbc333c65649f9
[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.                                    *
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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
17 /////////////////////////////////////////////////////////////////////
18 //                                                                 //
19 // START ( T-zero) detector  version 1                             //
20 //
21 //Begin Html       
22 /*
23 <img src="gif/AliSTARTv1Class.gif">
24 */
25 //End Html
26 //                                                                  //
27 //                                                                  //
28 //////////////////////////////////////////////////////////////////////
29
30 #include <Riostream.h>
31 #include <stdlib.h>
32
33 #include <TGeometry.h>
34 #include <TLorentzVector.h>
35 #include <TMath.h>
36 #include <TNode.h>
37 #include <TTUBE.h>
38 #include <TVirtualMC.h>
39
40 #include "AliLog.h"
41 #include "AliMagF.h"
42 #include "AliRun.h"
43 #include "AliSTARThit.h"
44 #include "AliSTARTv1.h"
45 #include "AliMC.h"
46
47 ClassImp(AliSTARTv1)
48
49 //--------------------------------------------------------------------
50 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
51  AliSTART(name,title)
52 {
53   //
54   // Standart constructor for START Detector version 0
55   //
56   fIdSens1=0;
57   fIshunt = 2;
58 }
59 //_____________________________________________________________________________
60
61 AliSTARTv1::~AliSTARTv1() 
62 {
63   // desctructor  
64 }
65
66 //-------------------------------------------------------------------------
67 void AliSTARTv1::CreateGeometry()
68 {
69   //
70   // Create the geometry of START Detector version 0
71   //
72   // begin Html
73   /*
74    <img src="gif/AliSTARTv0.gif">
75   */
76   //
77
78
79
80   Int_t *idtmed = fIdtmed->GetArray();
81   
82   Int_t is;
83   Int_t idrotm[999];
84   Float_t x,y,z;
85
86   Float_t pstartR[18]={0., 360., 5., 
87                        -76.5+0.00+69.7, 4.25, 10.,
88                        -76.5+6.05+69.7, 4.5, 10., 
89                        -76.5+8.05+69.7, 4.5, 10.,
90                        -76.5+8.05+69.7, 5.1, 10.,
91                        -62.9+0.00+69.7, 5.1, 10.};
92   
93   Float_t pstart[3]={4.3, 12.,6.8};
94   Float_t pinstart[3]={0.,1.6,6.5};
95   Float_t ppmt[3]={0.,1.5,3.5};
96   Float_t ptop[3]={0.,1.,1.5};
97   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
98   Float_t ptopout[3]={1.,1.01,1.5}; 
99   //  Float_t pregafter[3]={0.,1.0,0.005}; 
100   Float_t pdivider[3]={0.,1.2,1.75};
101   Float_t pdiv2[3]={0.,1.2,1.25};
102   Float_t pdiv1[3]={0.6,1.2,0.5};
103   Float_t pbot[3]={0.6,1.2,0.1};
104   Float_t pglass[3]={1.2,1.3,2.};
105   Float_t pcer[3]={0.9,1.1,0.09};
106   Float_t psteel[3]={0.9,1.1,0.01};
107   Float_t ppins[3]={0.6,1.2,0.014};
108   Float_t phole[3]={0.6,1.2,0.015};
109   Float_t pknob[3]={0.5,0.6,0.4};
110   Float_t pknob_vac[3]={0.,0.5,0.4};
111   Float_t pknob_bot[3]={0.,0.6,0.05};
112   Float_t pribber[3] = {0.,1.2,2.413/2.};
113   Float_t presist[3] = {0.,1.2,0.087/2.};
114   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
115   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
116   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
117   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
118   Float_t psupport6[3] = {0,1.5,0.05}; //kryshechka stakanchika  Al
119   Float_t psupport7[3] = {1.5,1.6,0.6}; //kolechko snaruzhu stakanchika Al
120    
121   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
122     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
123   Float_t ppcon[70]; 
124     ppcon[0]  =   0;
125     ppcon[1]  = 360;
126     ppcon[2]  =  13;
127 //  1: 
128     ppcon[3]  =  14.1/2;
129     ppcon[4]  =   4.4;
130     ppcon[5]  =   4.5;
131 //  2
132     ppcon[6]  = ppcon[3]+1.;
133     ppcon[7]  =   4.4;
134     ppcon[8]  =   4.5;
135 //  3
136     ppcon[9]  = ppcon[6];
137     ppcon[10] =   4.4;
138     ppcon[11] =   5.1;
139
140 //  4
141
142     ppcon[12]  = ppcon[9]+0.1;
143     ppcon[13] =   4.4;
144     ppcon[14] =   5.1;
145 //  5
146
147     ppcon[15]  = ppcon[12];
148     ppcon[16] =   4.9;
149     ppcon[17] =   5.1;
150     
151 //  6
152     ppcon[18]  = ppcon[15]+7.05;
153     ppcon[19] =   4.9;
154     ppcon[20] =   5.1;
155     
156 //  7
157     ppcon[21]  = ppcon[18];
158     ppcon[22] =   4.9;
159     ppcon[23] =   5.1;
160
161 /// 8
162     ppcon[24]  = ppcon[21]+0.01;
163     ppcon[25] =   3.15;
164     ppcon[26] =   3.25;
165     
166 /// 9
167     ppcon[27]  = ppcon[24];
168     ppcon[28] =   3.15;
169     ppcon[29] =   3.25;
170     
171 //  10
172     ppcon[30]  = ppcon[27]+4.5;
173     ppcon[31] =   3.15;
174     ppcon[32] =   3.25;
175
176 //  11
177     ppcon[33] = ppcon[30];
178     ppcon[34] =   3.15;
179     ppcon[35] =   3.25;
180
181 //  12
182     ppcon[36]  = ppcon[33];
183     ppcon[37] =   3.15;
184     ppcon[38] =   7.6;
185
186 //  13
187     ppcon[39]  = ppcon[33]+0.4;
188     ppcon[40] =   3.15;
189     ppcon[41] =   7.6;
190
191 //  14
192 //    ppcon[39]  = ppcon[36];
193 //    ppcon[40] =   3.15;
194 //    ppcon[41] =   7.6;
195
196     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
197     z=-69.7;//-14.1/2;
198     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
199
200
201    Float_t zdetRight=69.7,zdetLeft=350;
202  //-------------------------------------------------------------------
203  //  START volume 
204  //-------------------------------------------------------------------
205   
206     
207     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
208     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
209     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetRight-pstart[2],idrotm[901],"ONLY");
210     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetLeft+pstart[2],0,"ONLY");
211
212 //START interior
213    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
214    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);     
215           
216     gMC->Gsvolu("0DIV","TUBE",idtmed[kVac],pdivider,3);     
217     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
218     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
219     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
220     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
221     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
222     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
223     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
224     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
225              
226 // first ring: 12 units of Scintillator+PMT+divider
227   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetRight);
228   printf(" theta %f", theta);
229   Float_t angle  = 2 * TMath::Pi() / 12;
230   Float_t phi[3];
231     
232    for (is=0; is<12; is++)
233       {  
234
235         x = 6.5 * TMath::Sin(is * angle);
236         y = 6.5 * TMath::Cos(is * angle);
237         
238         phi[0] = -30 * is;
239         phi[1] = 90 - is * 30;
240         phi[2] = 90 - is * 30;
241         for (Int_t j = 0; j < 3; j++)
242           if (phi[j] < 0)  phi[j] += 360;
243         
244         AliMatrix (idrotm[902 + is], 90.,         phi[0],
245                    90. + theta, phi[1],
246                    theta,       phi[2]);  
247         z=-pstart[2]+pinstart[2]+0.2;
248         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
249         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
250         /*                      
251         x = 9.1 * TMath::Sin(angle/2+is * angle);
252         y = 9.1 * TMath::Cos(angle/2+is * angle);
253
254         gMC->Gspos ("0INS", is + 25, "0STL", x, y, z, 0, "ONLY");
255         */                      
256       } 
257    
258       
259    x=0;
260    y=0;
261    // z=-pinstart[2]+ppmt[2]+2.*psupport6[2]+0.1;
262     z=-pinstart[2]+ppmt[2];
263    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
264    //   z=z+pdivider[2]+ppmt[2];
265    //  gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
266    
267    // PMT
268    
269    // Entry window (glass)
270    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
271    //   gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
272    z=-ppmt[2]+ptop[2];
273    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
274    //metal volume to simulate reclection  
275    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); //glass
276    //   gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
277    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
278
279    //Fotokatod
280    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3); 
281    z = -ppmt[2] + 2 * ptop[2] + preg[2]; 
282    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); 
283    //optical volume special to detect photons in cathode 
284    //   gMC->Gsvolu ("0RE1", "TUBE", idtmed[kOpAirNext], pregafter, 3);
285    // z = -ppmt[2] + 2 * ptop[2] + 2*preg[2] + pregafter[2]; 
286    // gMC->Gspos ("0RE1", 1, "0PMT", 0, 0, z, 0, "ONLY");
287        
288    // Bottom glass
289    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
290    z=ppmt[2]-pbot[2];
291    AliDebugClass(1,Form("Z bottom %f\n",z));
292    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
293    // Side cylinder glass
294    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
295    z=ppmt[2]-pglass[2];
296    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
297    //PMT electrodes support structure
298    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
299    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
300    z=-ppmt[2]+2*ptop[2]+0.3;;
301    for (is=1; is<=15; is++)
302      {
303        z=z+psteel[2]+pcer[2];
304        gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
305        z=z+psteel[2]+pcer[2];
306        gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
307      }
308    
309    // Divider
310    // Knob at the bottom of PMT baloon
311    
312    gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
313    z=-pdivider[2]+pknob[2];
314    gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
315    gMC->Gsvolu("0KB","TUBE",idtmed[kGlass],pknob_bot,3);
316    z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
317    gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
318    gMC->Gsvolu("0VAC","TUBE",idtmed[kVac],pknob_vac,3);
319    z=-pdivider[2]+pknob_vac[2];
320    gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
321    //Steel pins + pin holes
322    gMC->Gsvolu("0PIN","TUBE",idtmed[kSteel],ppins,3);
323    z=-pdivider[2]+ppins[2];
324    gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
325    gMC->Gsvolu("0HOL","TUBE",idtmed[kBrass],phole,3);
326    z=-pdivider[2]+2*ppins[2]+phole[2];
327    gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
328    
329    //Socket
330    gMC->Gsvolu("0V1","TUBE",idtmed[kCer],pdiv1,3);
331    z=-pdivider[2]+pdiv1[2];
332    gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
333    //Resistors
334    gMC->Gsvolu("0V2","TUBE",idtmed[kAir],pdiv2,3);
335    z=pdivider[2]-pdiv2[2];
336    gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
337    gMC->Gsvolu("0RS","TUBE",idtmed[kCer],presist,3);
338    z=-pdiv2[2]+presist[2];
339    gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
340    gMC->Gsvolu("0RB","TUBE",idtmed[kRibber],pribber,3);
341    z=pdiv2[2]-pribber[2];
342    gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
343    
344    
345    //Support  left side
346    z=-pstart[2]+psupport1[2]+0.1;
347    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
348    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
349    z=-pstart[2]+psupport3[2]+0.1;
350    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
351    z=-pstart[2]+2.*psupport1[2]+0.1;
352    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
353    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu 
354    z=-pinstart[2]+psupport6[2];
355    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka 
356    
357    z=pinstart[2]-psupport7[2];
358    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
359    
360    
361    Float_t par[3];
362    par[0]=4.4;
363    par[1]=4.5;
364    par[2]=0.5;
365    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
366    z=ppcon[3]+par[2];
367    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY"); 
368    z += par[2];
369    par[0]=4.4;
370    par[1]=5.1;
371    par[2]=0.05;
372    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
373    z += par[2];
374    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY"); 
375    z=z+par[2];
376    par[0]=4.9;
377    par[1]=5.0;
378    par[2]=6.9/2;
379     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
380     z += par[2];
381     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY"); 
382     z += par[2];
383    
384      par[0]=3.15;
385     par[1]=4.9;
386     par[2]=0.1/2;
387     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
388     
389     z += par[2];
390     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY"); 
391     z=z+par[2];
392     par[0]=3.15;
393     par[1]=3.16;
394     par[2]=4.5/2;
395     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
396     z += par[2];
397     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY"); 
398     z=z+par[2];
399     par[0]=3.16; // eta chast' prikruchena k absorberu
400     par[1]=7.5;
401     par[2]=0.2;
402     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
403     z += 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]=7.5;
407     par[2]=0.01;
408     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
409     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY"); 
410          
411  
412 }    
413 //------------------------------------------------------------------------
414 void AliSTARTv1::CreateMaterials()
415 {
416    Int_t isxfld   = gAlice->Field()->Integ();
417    Float_t sxmgmx = gAlice->Field()->Max();
418    //   Float_t a,z,d,radl,absl,buf[1];
419    // Int_t nbuf;
420    Int_t *idtmed = fIdtmed->GetArray();
421
422 // AIR
423                                                                                 
424    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
425    Float_t zAir[4]={6.,7.,8.,18.};
426    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
427    Float_t dAir = 1.20479E-3;
428                                                                                 
429 // Scintillator CH
430    Float_t ascin[2]={1.01,12.01};
431    Float_t zscin[2]={1,6};
432    Float_t wscin[2]={1,1};
433    Float_t denscin=1.03;
434 //Lucite C(CH3)CO2CH3
435    Float_t alucite[3]={1.01,12.01,15.999};
436    Float_t zlucite[3]={1,6,8};
437    Float_t wlucite[3]={8,5,2};
438    Float_t denlucite=1.16;
439  // PMT glass SiO2
440    Float_t aglass[2]={28.0855,15.9994};
441    Float_t zglass[2]={14.,8.};
442    Float_t wglass[2]={1.,2.};
443    Float_t dglass=2.65;
444 // Ceramic   97.2% Al2O3 , 2.8% SiO2
445    // Float_t wcer[2]={0.972,0.028};
446    Float_t aCeramic[2]  = { 26.981539,15.9994 };
447    Float_t zCeramic[2]  = { 13.,8. };
448    Float_t wCeramic[2]  = { 2.,3. };
449    Float_t denscer  = 3.6;
450
451 // Brass 80% Cu, 20% Zn
452    Float_t abrass[2] = {63.546,65.39};
453    Float_t zbrass[2] = {29,30};
454    Float_t wbrass[2] = {0.8,0.2};
455    Float_t denbrass=8.96;
456
457 //Ribber C6H12S
458    Float_t aribber[3] = {12.,1.,32.};
459    Float_t zribber[3] = {6.,1.,16.};
460    Float_t wribber[3] = {6.,12.,1.};
461    Float_t denribber=0.8;
462 // Support inside 
463    Float_t asupport[2] = {12.,1.};
464    Float_t zsupport[2] = {6.,1.};
465    Float_t wsupport[2] = {1.,1.};
466    Float_t densupport=0.1;
467     
468 //*** Definition Of avaible START materials ***
469    AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
470    AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
471    AliMixture(2, "START Air$", aAir, zAir, dAir,4,wAir);
472    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999); 
473    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999); 
474
475    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
476    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
477    /* 
478   char namate[21]="";
479   
480    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
481    acer[0]=a;  
482
483    zcer[0]=z;
484    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
485    acer[1]=a;
486    zcer[1]=z;
487    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
488    */ 
489     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
490    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
491    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
492    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
493    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
494    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
495    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
496     AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
497    AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
498    
499    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
500    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
501    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
502    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
503    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
504    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
505    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
506    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
507    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
508    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
509    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
510    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
511    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
512    AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
513    AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
514     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
515
516
517 // Definition Cherenkov parameters
518    int i;
519    const Int_t kNbins=31;
520    
521    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
522             
523    // quartz 20mm
524    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4, 
525                              25.9, 25.3, 24.9, 24.5, 23.7, 
526                              23.2, 22.8, 22.4, 21.8, 21.3,
527                              22.8, 22.1, 21.7, 21.2, 20.5, 
528                              19.9, 19.3, 18.7, 18.0, 17.1, 
529                              16.3, 15.3, 14.3, 14.3   };
530           
531    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
532                              4.48, 4.58, 4.69, 4.81, 4.93, 
533                              5.05, 5.19, 5.33, 5.48, 5.63,
534                              5.8,  5.97, 6.16, 6.36, 6.57, 
535                              6.8,  7.04, 7.3,  7.58, 7.89, 
536                              8.22, 8.57, 8.97, 9.39 };  
537    /*     
538    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
539                               0.21, 0.22, 0.23, 0.24, 0.26, 
540                               0.27, 0.29, 0.30, 0.29, 0.29, 
541                               0.28, 0.28, 0.27, 0.26, 0.25, 
542                               0.25, 0.23, 0.20, 0.19, 0.17,
543                               0.17, 0.17, 0.2, 0.23};
544    */     
545    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
546   for(i=0;i<kNbins;i++)
547     {
548       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV   
549       rindexAir[i]=0;
550       rindexSiO2[i]=1.458; //refractive index for qwarts
551       rindexCathodeNext[i]=0;
552       efficAll[i]=1.;
553
554       //      aAbsSiO2[i]=28.5; //quartz 30mm
555       absorAir[i]=0.3;      
556       absorbCathodeNext[i]=0;
557
558     }
559   
560   
561    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
562    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
563    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
564   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
565    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
566    
567    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
568    
569    
570 }
571 //---------------------------------------------------------------------
572 void AliSTARTv1::DrawDetector()
573 {
574 //
575 // Draw a shaded view of the Forward multiplicity detector version 0
576 //
577   
578   //Set ALIC mother transparent
579   gMC->Gsatt("ALIC","SEEN",0);
580   //
581   //Set volumes visible
582   //  gMC->Gsatt("0STR","SEEN",0);
583   //  gMC->Gsatt("0INS","SEEN",0);
584   // gMC->Gsatt("0PMT","SEEN",1);
585   // gMC->Gsatt("0DIV","SEEN",1);
586   //
587   gMC->Gdopt("hide","off");
588   gMC->Gdopt("shad","on");
589   gMC->SetClipBox(".");
590   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
591   gMC->DefaultRange();
592   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
593   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
594   gMC->Gdhead(1111,"T-Zero detector");
595   gMC->Gdopt("hide","off");
596 }
597
598 //-------------------------------------------------------------------
599 void AliSTARTv1::Init()
600 {
601 // Initialises version 0 of the Forward Multiplicity Detector
602 //
603 //Int_t *idtmed  = gAlice->Idtmed();
604   AliSTART::Init();
605   fIdSens1=gMC->VolId("0REG");
606
607    AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
608
609 }
610
611 //-------------------------------------------------------------------
612
613 void AliSTARTv1::StepManager()
614 {
615   //
616   // Called for every step in the START Detector
617   //
618   Int_t id,copy,copy1;
619   static Float_t hits[6];
620   static Int_t vol[2];
621   TLorentzVector pos;
622   
623   //   TClonesArray &lhits = *fHits;
624   
625   if(!gMC->IsTrackAlive()) return; // particle has disappeared
626   
627 // If particles is photon then ...
628   
629  if (gMC->TrackPid() == 50000050)
630   {
631       id=gMC->CurrentVolID(copy);
632       
633       
634       // Check the sensetive volume
635       if(id==fIdSens1 ) { 
636         if(gMC->IsTrackEntering()) {
637           gMC->CurrentVolOffID(2,copy);
638           vol[1]=copy;
639           gMC->CurrentVolOffID(3,copy1);
640           vol[0]=copy1;
641           gMC->TrackPosition(pos);
642           hits[0] = pos[0];
643           hits[1] = pos[1];
644           hits[2] = pos[2];
645           if(pos[2]<0) vol[0]=2;
646           if(pos[2]>=0) vol[0]=1; 
647           
648           Float_t etot=gMC->Etot();
649           hits[3]=etot;
650           Int_t iPart= gMC->TrackPid();
651           Int_t partID=gMC->IdFromPDG(iPart);
652           hits[4]=partID;
653           Float_t ttime=gMC->TrackTime();
654           hits[5]=ttime*1e12;
655           AddHit(fIshunt,vol,hits);
656           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
657         }
658         /*              
659                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
660                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
661                gMC->IsTrackAlive(),
662                gMC->IsTrackDisappeared(),
663                gMC->IsTrackEntering(),
664                gMC->IsTrackExiting(),
665                gMC->IsTrackInside(),
666                gMC->IsTrackOut(),
667                gMC->IsTrackStop(),
668                gMC->IsNewTrack());
669         */              
670       } //sensitive
671   } //photon
672 }
673
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