hardcoded detector position; bug in alignment pth fixed
[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    Float_t zdetC = 69.7;
96    Float_t zdetA = 373.;
97
98   Int_t is;
99   Int_t idrotm[999];
100   Float_t x,y,z;
101   //C T0 mother volume
102   Float_t pstartR[18]={0., 360., 5., 
103                        -6.8, 4.25, 10., //-76.5+0.00+69.7
104                        -0.75 , 4.5, 10.,  // -76.5+6.05+69.7
105                        1.25   , 4.5, 10.,  //-76.5+8.05+69.7
106                        1.25 , 5.1, 10., //-76.5+8.05+69.7 
107                        6.8 , 5.1, 10.};  //-62.9+0.00+69.7
108   
109   Float_t pstart[3]={4.29, 12.5,6.8};
110   Float_t pinstart[3]={0.,1.6,6.5};
111   Float_t ppmt[3]={0.,1.5,3.5};
112   Float_t ptop[3]={0.,1.,1.0};
113   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
114   Float_t ptopout[3]={1.,1.01, 1.};  //metal air around raiator for photos reflection 
115   Float_t pbot[3]={0.6,1.2,0.1};
116   Float_t pglass[3]={1.2,1.3,2.};
117   Float_t pcer[3]={0.9,1.1,1.35};
118   Float_t psteel[3]={0.9,1.1,0.15};
119   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
120   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
121   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
122   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
123   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
124   Float_t psupport7[3] = {1.5,1.6,0.4}; //kolechko snaruzhu stakanchika Al
125    
126   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
127     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
128   Float_t ppcon[70]; 
129     ppcon[0]  =   0;
130     ppcon[1]  = 360;
131     ppcon[2]  =  13;
132 //  1: 
133     ppcon[3]  =  7.2; // 14.1/2;
134     ppcon[4]  =   4.4;
135     ppcon[5]  =   4.5;
136 //  2
137     ppcon[6]  = ppcon[3]+1.;
138     ppcon[7]  =   4.4;
139     ppcon[8]  =   4.5;
140 //  3
141     ppcon[9]  = ppcon[6];
142     ppcon[10] =   4.4;
143     ppcon[11] =   5.1;
144
145 //  4
146
147     ppcon[12]  = ppcon[9]+0.1;
148     ppcon[13] =   4.4;
149     ppcon[14] =   5.1;
150 //  5
151
152     ppcon[15]  = ppcon[12];
153     ppcon[16] =   4.9;
154     ppcon[17] =   5.1;
155     
156 //  6
157 //    ppcon[18]  = ppcon[15]+6.9;
158     ppcon[18]  = ppcon[15]+6.7;
159     ppcon[19] =   4.9;
160     ppcon[20] =   5.1;
161     
162 //  7
163     ppcon[21]  = ppcon[18];
164     ppcon[22] =   4.9;
165     ppcon[23] =   5.1;
166
167 /// 8
168     ppcon[24]  = ppcon[21]+0.01;
169     ppcon[25] =   3.15;
170     ppcon[26] =   3.25;
171     //   ppcon[25] =   2.25;
172     // ppcon[26] =   2.33;
173     
174 /// 9
175     ppcon[27]  = ppcon[24];
176     ppcon[28] =   ppcon[25];
177     ppcon[29] =  ppcon[26] ;
178     
179 //  10
180 //    ppcon[30]  = ppcon[27]+4.5;
181     ppcon[30]  = ppcon[27]+4.7;
182     ppcon[31] =   2.3;
183     ppcon[32] =  ppcon[26] ;
184
185 //  11
186     ppcon[33] = ppcon[30];
187     //    ppcon[34] =   3.15;
188     ppcon[34] =   2.3;
189     ppcon[35] =  ppcon[26] ;
190     
191 //  12
192     ppcon[36]  = ppcon[33];
193     ppcon[37] =   ppcon[34] ;
194     ppcon[38] =   7.6;
195     
196     //  13
197     ppcon[39]  = ppcon[33]+0.2;
198     ppcon[40] =   ppcon[34] ;
199     ppcon[41] =   7.6;
200     
201 //  14
202 //    ppcon[39]  = ppcon[36];
203 //    ppcon[40] =   3.15;
204 //    ppcon[41] =   7.6;
205
206
207
208     gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
209     //    gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,38);
210     z=-zdetC;
211     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
212
213  //-------------------------------------------------------------------
214  //  START volume 
215  //-------------------------------------------------------------------
216   
217     
218     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
219     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
220     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
221     gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
222
223 //START interior
224    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
225    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);     
226           
227     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
228     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
229     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
230     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
231     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
232     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
233     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
234     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
235              
236 // first ring: 12 units of Scintillator+PMT+divider
237   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetC);
238   Float_t angle  = 2 * TMath::Pi() / 12;
239   Float_t phi[3];
240     
241    for (is=0; is<12; is++)
242       {  
243
244         x = 6.5 * TMath::Sin(is * angle);
245         y = 6.5 * TMath::Cos(is * angle);
246         
247         phi[0] = -30 * is;
248         phi[1] = 90 - is * 30;
249         phi[2] = 90 - is * 30;
250         for (Int_t j = 0; j < 3; j++)
251           if (phi[j] < 0)  phi[j] += 360;
252         
253         AliMatrix (idrotm[902 + is], 90.,         phi[0],
254                    90. + theta, phi[1],
255                    theta,       phi[2]);  
256         z=-pstart[2]+pinstart[2]+0.2;
257         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
258         gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
259       } 
260    
261       
262    x=0;
263    y=0;
264     z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
265    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
266    // PMT
267    
268    // Entry window (glass)
269    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
270    z=-ppmt[2]+ptop[2];
271    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
272    //"metal" air volume to simulate reclection  
273    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); 
274    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
275
276    //Fotokatod
277    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3); 
278    z = -ppmt[2] + 2 * ptop[2] + preg[2]; 
279    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); 
280   // Bottom glass
281    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
282    z=ppmt[2]-pbot[2];
283    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
284    // Side cylinder glass
285    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
286    z=ppmt[2]-pglass[2];
287    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
288    //PMT electrodes support structure
289    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
290    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
291    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
292    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
293    z +=psteel[2]+pcer[2];
294    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
295     
296    //Support  left side
297    z=-pstart[2]+psupport1[2]+0.1;
298    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
299    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
300    z=-pstart[2]+psupport3[2]+0.1;
301    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
302    z=-pstart[2]+2.*psupport1[2]-0.05;//+0.1;
303    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
304    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu 
305    z=-pinstart[2]+psupport6[2];
306    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka 
307    
308    z=pinstart[2]-psupport7[2];
309    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
310    
311    
312    Float_t par[3];
313    par[0]=4.4;
314    par[1]=4.5;
315    par[2]=0.5;
316    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
317    z=ppcon[3]+par[2];
318    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY"); 
319    z += par[2];
320    par[0]=4.4;
321    par[1]=5.1;
322    par[2]=0.05;
323    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
324    z += par[2];
325    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY"); 
326    z=z+par[2];
327    par[0]=4.9;
328    par[1]=5.0;
329    par[2]=6.7/2;
330     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
331     z += par[2];
332     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY"); 
333     z += par[2];
334    
335     par[0]=3.15;
336     par[1]=4.9;
337     par[2]=0.1/2;
338     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
339     
340     z += par[2];
341     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY"); 
342     z=z+par[2];
343     par[0]=3.15;
344     par[1]=3.16;
345     par[2]=4.7/2;
346     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
347     z += par[2];
348     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY"); 
349     z=z+par[2];
350     par[0]=3.16; // eta chast' prikruchena k absorberu
351     par[1]=7.5;
352     par[2]=0.1;
353     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
354     z += par[2];
355     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY"); 
356     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
357     par[1]=7.5;
358     par[2]=0.01;
359     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
360     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY"); 
361          
362  
363 }    
364 //------------------------------------------------------------------------
365 void AliSTARTv1::AddAlignableVolumes() const
366 {
367   //
368   // Create entries for alignable volumes associating the symbolic volume
369   // name with the corresponding volume path. Needs to be syncronized with
370   // eventual changes in the geometry.
371   //
372
373   TString volPath;
374   TString symName, sn;
375
376   TString vpA  = "/ALIC_1/0STL_1/0INS_";
377   TString vpC  = "/ALIC_1/0STR_1/0INS_";
378   TString vpInside  = "/0PMT_1/0TOP_1";
379
380
381   for (Int_t imod=0; imod<24; imod++)
382     {
383       if (imod < 12) 
384         {volPath  = vpC; sn="START/C/PMT";}
385       else  
386         {volPath  = vpA; sn="START/A/PMT";}
387       volPath += imod+1;
388       volPath += vpInside;
389       
390       symName = sn;
391       symName += imod+1;
392       
393       AliDebug(2,"--------------------------------------------");
394       AliDebug(2,Form("Alignable object %d", imod));
395       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
396       AliDebug(2,Form("symName=%s\n",symName.Data()));
397       AliDebug(2,"--------------------------------------------");
398       //  gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data());
399       if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
400         AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", 
401                       symName.Data(),volPath.Data()));
402       
403     }
404 }   
405 //------------------------------------------------------------------------
406 void AliSTARTv1::CreateMaterials()
407 {
408    Int_t isxfld   = gAlice->Field()->Integ();
409    Float_t sxmgmx = gAlice->Field()->Max();
410    //   Float_t a,z,d,radl,absl,buf[1];
411    // Int_t nbuf;
412    Int_t *idtmed = fIdtmed->GetArray();
413
414 // AIR
415                                                                                 
416    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
417    Float_t zAir[4]={6.,7.,8.,18.};
418    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
419    Float_t dAir = 1.20479E-3;
420                                                                                 
421 // Scintillator CH
422    Float_t ascin[2]={1.01,12.01};
423    Float_t zscin[2]={1,6};
424    Float_t wscin[2]={1,1};
425    Float_t denscin=1.03;
426 //Lucite C(CH3)CO2CH3
427    Float_t alucite[3]={1.01,12.01,15.999};
428    Float_t zlucite[3]={1,6,8};
429    Float_t wlucite[3]={8,5,2};
430    Float_t denlucite=1.16;
431  // PMT glass SiO2
432    Float_t aglass[2]={28.0855,15.9994};
433    Float_t zglass[2]={14.,8.};
434    Float_t wglass[2]={1.,2.};
435    Float_t dglass=2.65;
436 // Ceramic   97.2% Al2O3 , 2.8% SiO2
437    // Float_t wcer[2]={0.972,0.028};
438    Float_t aCeramic[2]  = { 26.981539,15.9994 };
439    Float_t zCeramic[2]  = { 13.,8. };
440    Float_t wCeramic[2]  = { 2.,3. };
441    Float_t denscer  = 3.6;
442
443 // Brass 80% Cu, 20% Zn
444    Float_t abrass[2] = {63.546,65.39};
445    Float_t zbrass[2] = {29,30};
446    Float_t wbrass[2] = {0.8,0.2};
447    Float_t denbrass=8.96;
448
449 //Ribber C6H12S
450    Float_t aribber[3] = {12.,1.,32.};
451    Float_t zribber[3] = {6.,1.,16.};
452    Float_t wribber[3] = {6.,12.,1.};
453    Float_t denribber=0.8;
454 // Support inside 
455    Float_t asupport[2] = {12.,1.};
456    Float_t zsupport[2] = {6.,1.};
457    Float_t wsupport[2] = {1.,1.};
458    Float_t densupport=0.1;
459     
460 //*** Definition Of avaible START materials ***
461    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
462    AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
463    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
464    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999); 
465    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999); 
466
467    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
468    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
469    /* 
470   char namate[21]="";
471   
472    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
473    acer[0]=a;  
474
475    zcer[0]=z;
476    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
477    acer[1]=a;
478    zcer[1]=z;
479    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
480    */ 
481     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
482    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
483    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
484    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
485    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
486    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
487    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
488     AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
489    AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
490    
491    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
492    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
493    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
494    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
495    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
496    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
497    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
498    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
499    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
500    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
501    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
502    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
503    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
504    AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
505    AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
506     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
507
508
509 // Definition Cherenkov parameters
510    int i;
511    const Int_t kNbins=31;
512    
513    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
514             
515    // quartz 20mm
516    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4, 
517                              25.9, 25.3, 24.9, 24.5, 23.7, 
518                              23.2, 22.8, 22.4, 21.8, 21.3,
519                              22.8, 22.1, 21.7, 21.2, 20.5, 
520                              19.9, 19.3, 18.7, 18.0, 17.1, 
521                              16.3, 15.3, 14.3, 14.3   };
522           
523    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
524                              4.48, 4.58, 4.69, 4.81, 4.93, 
525                              5.05, 5.19, 5.33, 5.48, 5.63,
526                              5.8,  5.97, 6.16, 6.36, 6.57, 
527                              6.8,  7.04, 7.3,  7.58, 7.89, 
528                              8.22, 8.57, 8.97, 9.39 };  
529    /*     
530    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
531                               0.21, 0.22, 0.23, 0.24, 0.26, 
532                               0.27, 0.29, 0.30, 0.29, 0.29, 
533                               0.28, 0.28, 0.27, 0.26, 0.25, 
534                               0.25, 0.23, 0.20, 0.19, 0.17,
535                               0.17, 0.17, 0.2, 0.23};
536    */     
537    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
538   for(i=0;i<kNbins;i++)
539     {
540       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV   
541       rindexAir[i]=0;
542       rindexSiO2[i]=1.458; //refractive index for qwarts
543       rindexCathodeNext[i]=0;
544       efficAll[i]=1.;
545
546       //      aAbsSiO2[i]=28.5; //quartz 30mm
547       absorAir[i]=0.3;      
548       absorbCathodeNext[i]=0;
549
550     }
551   
552   
553    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
554    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
555    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
556   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
557    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
558    
559    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
560    
561    
562 }
563 //---------------------------------------------------------------------
564 void AliSTARTv1::DrawDetector()
565 {
566 //
567 // Draw a shaded view of the Forward multiplicity detector version 0
568 //
569   
570   //Set ALIC mother transparent
571   gMC->Gsatt("ALIC","SEEN",0);
572   //
573   //Set volumes visible
574   //  gMC->Gsatt("0STR","SEEN",0);
575   //  gMC->Gsatt("0INS","SEEN",0);
576   // gMC->Gsatt("0PMT","SEEN",1);
577   // gMC->Gsatt("0DIV","SEEN",1);
578   //
579   gMC->Gdopt("hide","off");
580   gMC->Gdopt("shad","on");
581   gMC->SetClipBox(".");
582   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
583   gMC->DefaultRange();
584   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
585   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
586   gMC->Gdhead(1111,"T-Zero detector");
587   gMC->Gdopt("hide","off");
588 }
589
590 //-------------------------------------------------------------------
591 void AliSTARTv1::Init()
592 {
593 // Initialises version 0 of the Forward Multiplicity Detector
594 //
595 //Int_t *idtmed  = gAlice->Idtmed();
596   AliSTART::Init();
597   fIdSens1=gMC->VolId("0REG");
598
599    AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
600
601 }
602
603 //-------------------------------------------------------------------
604
605 void AliSTARTv1::StepManager()
606 {
607   //
608   // Called for every step in the START Detector
609   //
610   Int_t id,copy,copy1;
611   static Float_t hits[6];
612   static Int_t vol[2];
613   TLorentzVector pos;
614   
615   //   TClonesArray &lhits = *fHits;
616   
617   if(!gMC->IsTrackAlive()) return; // particle has disappeared
618   
619   
620     // If particles is photon then ...
621   
622  if (gMC->TrackPid() == 50000050)
623   {
624       id=gMC->CurrentVolID(copy);
625       
626       
627       // Check the sensetive volume
628       if(id==fIdSens1 ) { 
629         if(gMC->IsTrackEntering()) {
630           gMC->CurrentVolOffID(2,copy);
631           vol[1]=copy;
632           gMC->CurrentVolOffID(3,copy1);
633           vol[0]=copy1;
634           gMC->TrackPosition(pos);
635           hits[0] = pos[0];
636           hits[1] = pos[1];
637           hits[2] = pos[2];
638           if(pos[2]<0) vol[0]=2;
639           if(pos[2]>=0) vol[0]=1; 
640           
641           Float_t etot=gMC->Etot();
642           hits[3]=etot;
643           Int_t iPart= gMC->TrackPid();
644           Int_t partID=gMC->IdFromPDG(iPart);
645           hits[4]=partID;
646           Float_t ttime=gMC->TrackTime();
647           hits[5]=ttime*1e12;
648           AddHit(fIshunt,vol,hits);
649           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
650         }
651         /*              
652                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
653                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
654                gMC->IsTrackAlive(),
655                gMC->IsTrackDisappeared(),
656                gMC->IsTrackEntering(),
657                gMC->IsTrackExiting(),
658                gMC->IsTrackInside(),
659                gMC->IsTrackOut(),
660                gMC->IsTrackStop(),
661                gMC->IsNewTrack());
662         */              
663       } //sensitive
664   } //photon
665 }
666
667
668
669
670
671
672
673