A-side support
[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   *
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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 /* $Id$ */
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 #include "TGeoPgon.h"
42 #include "TGeoTube.h"
43 #include "TGeoCompositeShape.h"
44
45 #include "AliLog.h"
46 #include "AliMagF.h"
47 #include "AliRun.h"
48
49 #include "AliSTARThit.h"
50 #include "AliSTARTv1.h"
51 #include "AliSTARTParameters.h"
52
53 #include "AliMC.h"
54 #include "AliCDBLocal.h"
55 #include "AliCDBStorage.h"
56 #include "AliCDBManager.h"
57 #include "AliCDBEntry.h"
58
59 ClassImp(AliSTARTv1)
60
61 //--------------------------------------------------------------------
62 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
63   AliSTART(name,title),
64   fIdSens1(0)
65 {
66   //
67   // Standart constructor for START Detector version 0
68   //
69   fIshunt = 2;
70 }
71 //_____________________________________________________________________________
72
73 AliSTARTv1::~AliSTARTv1() 
74 {
75   // desctructor  
76 }
77
78 //-------------------------------------------------------------------------
79 void AliSTARTv1::CreateGeometry()
80 {
81   //
82   // Create the geometry of START Detector version 0
83   //
84   // begin Html
85   /*
86    <img src="gif/AliSTARTv0.gif">
87   */
88   //
89
90
91    Int_t *idtmed = fIdtmed->GetArray();
92    /*
93    AliSTARTParameters* param = AliSTARTParameters::Instance();
94    param->Init();
95   Float_t zdetC = param->GetZposition(0);
96   Float_t zdetA = param->GetZposition(1);
97    */
98    Float_t zdetC = 69.7;
99    Float_t zdetA = 373.;
100
101   Int_t is;
102   Int_t idrotm[999];
103   Float_t x,y,z;
104   //C T0 mother volume
105   Float_t pstartR[18]={0., 360., 5., 
106                        -6.8, 4.25, 10., //-76.5+0.00+69.7
107                        -0.75 , 4.5, 10.,  // -76.5+6.05+69.7
108                        1.25   , 4.5, 10.,  //-76.5+8.05+69.7
109                        1.25 , 5.1, 10., //-76.5+8.05+69.7 
110                        6.8 , 5.1, 10.};  //-62.9+0.00+69.7
111   
112   Float_t pstart[3]={4., 12.5,6.8};
113   Float_t pinstart[3]={0.,1.6,6.5};
114   Float_t ppmt[3]={0.,1.5,3.5};
115   Float_t ptop[3]={0.,1.,1.0};
116   Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
117   Float_t ptopout[3]={1.,1.01, 1.};  //metal air around raiator for photos reflection 
118   Float_t pbot[3]={0.6,1.2,0.1};
119   Float_t pglass[3]={1.2,1.3,2.};
120   Float_t pcer[3]={0.9,1.1,1.35};
121   Float_t psteel[3]={0.9,1.1,0.15};
122   Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
123   Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi  C
124   Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki  C
125   Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu  C
126   Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika  Al
127   Float_t psupport7[3] = {1.5,1.6,0.4}; //kolechko snaruzhu stakanchika Al
128    
129   // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
130     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
131   Float_t ppcon[70]; 
132     ppcon[0]  =   0;
133     ppcon[1]  = 360;
134     ppcon[2]  =  13;
135 //  1: 
136     ppcon[3]  =  7.2; // 14.1/2;
137     ppcon[4]  =   4.4;
138     ppcon[5]  =   4.5;
139 //  2
140     ppcon[6]  = ppcon[3]+1.;
141     ppcon[7]  =   4.4;
142     ppcon[8]  =   4.5;
143 //  3
144     ppcon[9]  = ppcon[6];
145     ppcon[10] =   4.4;
146     ppcon[11] =   5.1;
147
148 //  4
149
150     ppcon[12]  = ppcon[9]+0.1;
151     ppcon[13] =   4.4;
152     ppcon[14] =   5.1;
153 //  5
154
155     ppcon[15]  = ppcon[12];
156     ppcon[16] =   4.9;
157     ppcon[17] =   5.1;
158     
159 //  6
160 //    ppcon[18]  = ppcon[15]+6.9;
161     ppcon[18]  = ppcon[15]+6.7;
162     ppcon[19] =   4.9;
163     ppcon[20] =   5.1;
164     
165 //  7
166     ppcon[21]  = ppcon[18];
167     ppcon[22] =   4.9;
168     ppcon[23] =   5.1;
169
170 /// 8
171     ppcon[24]  = ppcon[21]+0.01;
172     ppcon[25] =   3.15;
173     ppcon[26] =   3.25;
174     //   ppcon[25] =   2.25;
175     // ppcon[26] =   2.33;
176     
177 /// 9
178     ppcon[27]  = ppcon[24];
179     ppcon[28] =   ppcon[25];
180     ppcon[29] =  ppcon[26] ;
181     
182 //  10
183 //    ppcon[30]  = ppcon[27]+4.5;
184     ppcon[30]  = ppcon[27]+4.7;
185     ppcon[31] =   2.3;
186     ppcon[32] =  ppcon[26] ;
187
188 //  11
189     ppcon[33] = ppcon[30];
190     //    ppcon[34] =   3.15;
191     ppcon[34] =   2.3;
192     ppcon[35] =  ppcon[26] ;
193     
194 //  12
195     ppcon[36]  = ppcon[33];
196     ppcon[37] =   ppcon[34] ;
197     ppcon[38] =   7.6;
198     
199     //  13
200     ppcon[39]  = ppcon[33]+0.2;
201     ppcon[40] =   ppcon[34] ;
202     ppcon[41] =   7.6;
203     
204 //  14
205 //    ppcon[39]  = ppcon[36];
206 //    ppcon[40] =   3.15;
207 //    ppcon[41] =   7.6;
208
209
210
211     gMC->Gsvolu("0SUP", "PCON", idtmed[kAl], ppcon,42);
212     //    gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,38);
213     z = -zdetC;
214     gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
215    
216 //-------------------------------------------------------------------
217  //  START volume 
218  //-------------------------------------------------------------------
219   
220     
221     gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
222     gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
223     gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
224     // gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
225
226 //START interior
227    gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
228    gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);     
229           
230     gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
231     gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi  C
232     gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai  C
233     gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai  C
234     //    gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
235     gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu  C
236     gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika  Al
237     gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
238    
239  
240
241    //non-absorber side support  and T0A !!!!!!!!
242     
243     TGeoPgon * supPgon = new TGeoPgon("supPgon",0.,360.,360,4);
244     supPgon->DefineSection(0, 0, 4.1, 5.5);
245     supPgon->DefineSection(1, 10.5 , 4.1, 5.5);
246     supPgon->DefineSection(2, 10.5 , 4.1, 4.9);
247     supPgon->DefineSection(3, 12.5 , 4.1, 4.9);
248     TGeoTranslation *trPgon = new TGeoTranslation("trPgon",0,0,0);
249     trPgon->RegisterYourself();
250  
251     TGeoVolumeAssembly * stlin = new TGeoVolumeAssembly("OSTL");//empty segment
252     TGeoVolume *ins = gGeoManager->GetVolume("0INS");
253
254     Double_t phimin = TMath::ACos((16-4.8)/16.) * (180 / TMath::Pi()) ;
255     //  TGeoTubeSeg *hole = new TGeoTubeSeg("hole", 0, 1.6, 0, -phimin+90, phimin+90);
256     TGeoTube*hole = new TGeoTube("hole", 0, 1.61, 6.5);
257     TGeoTranslation *tr [12];
258     Float_t angle  = 2 * TMath::Pi() / 12;
259     Char_t nameTr[4];
260     for (Int_t itr=0; itr<12; itr++) {
261       sprintf (nameTr,"tr%i",itr+1);
262       x = 6.5 * TMath::Sin(itr * angle);
263       y = 6.5 * TMath::Cos(itr * angle);
264       tr[itr] = new TGeoTranslation(nameTr,x,y,6.5);
265       tr[itr]->RegisterYourself();
266        stlin->AddNode(ins,itr+13,tr[itr]);
267     }
268     TGeoCompositeShape *supsh = new TGeoCompositeShape("supsh","supPgon:trPgon-(hole:tr1+hole:tr2+hole:tr3+hole:tr4+hole:tr5+hole:tr6+hole:tr7+hole:tr8+hole:tr9+hole:tr10+hole:tr11+hole:tr12)");
269   
270     TGeoMedium *medal = gGeoManager->GetMedium("START_Aluminium$");
271     TGeoVolume *supA = new TGeoVolume("0SUA",supsh,medal);
272     stlin->AddNode(supA,1,new TGeoTranslation(0,0,0));
273  
274     TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
275     alice->AddNode(stlin,1,new TGeoTranslation(0,0, zdetA ));
276             
277     // T0A finished
278
279     //T0C 
280 // first ring: 12 units of Scintillator+PMT+divider
281   Float_t  theta  = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetC);
282   Float_t phi[3];
283    for (is=0; is<12; is++)
284       {  
285
286         x = 6.5 * TMath::Sin(is * angle);
287         y = 6.5 * TMath::Cos(is * angle);
288         
289         phi[0] = -30 * is;
290         phi[1] = 90 - is * 30;
291         phi[2] = 90 - is * 30;
292         for (Int_t j = 0; j < 3; j++)
293           if (phi[j] < 0)  phi[j] += 360;
294         
295         AliMatrix (idrotm[902 + is], 90.,         phi[0],
296                    90. + theta, phi[1],
297                    theta,       phi[2]);  
298         z=-pstart[2]+pinstart[2]+0.2;
299         gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
300   }     
301      
302    x=0;
303    y=0;
304     z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
305    gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
306    // PMT
307    
308    // Entry window (glass)
309    gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
310    z=-ppmt[2]+ptop[2];
311    gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
312    //"metal" air volume to simulate reclection  
313    gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); 
314    gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
315
316    //Fotokatod
317    gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3); 
318    z = -ppmt[2] + 2 * ptop[2] + preg[2]; 
319    gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY"); 
320   // Bottom glass
321    gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
322    z=ppmt[2]-pbot[2];
323    gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
324    // Side cylinder glass
325    gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
326    z=ppmt[2]-pglass[2];
327    gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
328    //PMT electrodes support structure
329    gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
330    gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
331    z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
332    gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
333    z +=psteel[2]+pcer[2];
334    gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
335     
336    //Support absorber (C) side
337    z=-pstart[2]+psupport1[2]+0.1;
338    gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
339    gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
340    z=-pstart[2]+psupport3[2]+0.1;
341    gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
342    z=-pstart[2]+2.*psupport1[2]-0.05;//+0.1;
343    gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
344    gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu 
345    z=-pinstart[2]+psupport6[2];
346    gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka 
347    
348    z=pinstart[2]-psupport7[2];
349    gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
350    
351    
352    Float_t par[3];
353    par[0]=4.4;
354    par[1]=4.5;
355    par[2]=0.5;
356    gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
357    z=ppcon[3]+par[2];
358    gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY"); 
359    z += par[2];
360    par[0]=4.4;
361    par[1]=5.1;
362    par[2]=0.05;
363    gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
364    z += par[2];
365    gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY"); 
366    z=z+par[2];
367    par[0]=4.9;
368    par[1]=5.0;
369    par[2]=6.7/2;
370     gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
371     z += par[2];
372     gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY"); 
373     z += par[2];
374    
375     par[0]=3.15;
376     par[1]=4.9;
377     par[2]=0.1/2;
378     gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
379     
380     z += par[2];
381     gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY"); 
382     z=z+par[2];
383     par[0]=3.15;
384     par[1]=3.16;
385     par[2]=4.7/2;
386     gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
387     z += par[2];
388     gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY"); 
389     z=z+par[2];
390     par[0]=3.16; // eta chast' prikruchena k absorberu
391     par[1]=7.5;
392     par[2]=0.1;
393     gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
394     z += par[2];
395     gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY"); 
396     par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
397     par[1]=7.5;
398     par[2]=0.01;
399     gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
400     gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY"); 
401  
402    
403
404  
405 }    
406 //------------------------------------------------------------------------
407 void AliSTARTv1::AddAlignableVolumes() const
408 {
409   //
410   // Create entries for alignable volumes associating the symbolic volume
411   // name with the corresponding volume path. Needs to be syncronized with
412   // eventual changes in the geometry.
413   //
414
415   TString volPath;
416   TString symName, sn;
417
418   TString vpA  = "/ALIC_1/0STL_1/0INS_";
419   TString vpC  = "/ALIC_1/0STR_1/0INS_";
420   TString vpInside  = "/0PMT_1/0TOP_1";
421
422
423   for (Int_t imod=0; imod<24; imod++)
424     {
425       if (imod < 12) 
426         {volPath  = vpC; sn="START/C/PMT";}
427       else  
428         {volPath  = vpA; sn="START/A/PMT";}
429       volPath += imod+1;
430       volPath += vpInside;
431       
432       symName = sn;
433       symName += imod+1;
434       
435       AliDebug(2,"--------------------------------------------");
436       AliDebug(2,Form("Alignable object %d", imod));
437       AliDebug(2,Form("volPath=%s\n",volPath.Data()));
438       AliDebug(2,Form("symName=%s\n",symName.Data()));
439       AliDebug(2,"--------------------------------------------");
440       gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data());
441       // if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
442       //        AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", 
443       //              symName.Data(),volPath.Data()));
444       
445     }
446 }   
447 //------------------------------------------------------------------------
448 void AliSTARTv1::CreateMaterials()
449 {
450    Int_t isxfld   = gAlice->Field()->Integ();
451    Float_t sxmgmx = gAlice->Field()->Max();
452    //   Float_t a,z,d,radl,absl,buf[1];
453    // Int_t nbuf;
454    Int_t *idtmed = fIdtmed->GetArray();
455
456 // AIR
457                                                                                 
458    Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
459    Float_t zAir[4]={6.,7.,8.,18.};
460    Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
461    Float_t dAir = 1.20479E-3;
462                                                                                 
463 // Scintillator CH
464    Float_t ascin[2]={1.01,12.01};
465    Float_t zscin[2]={1,6};
466    Float_t wscin[2]={1,1};
467    Float_t denscin=1.03;
468 //Lucite C(CH3)CO2CH3
469    Float_t alucite[3]={1.01,12.01,15.999};
470    Float_t zlucite[3]={1,6,8};
471    Float_t wlucite[3]={8,5,2};
472    Float_t denlucite=1.16;
473  // PMT glass SiO2
474    Float_t aglass[2]={28.0855,15.9994};
475    Float_t zglass[2]={14.,8.};
476    Float_t wglass[2]={1.,2.};
477    Float_t dglass=2.65;
478 // Ceramic   97.2% Al2O3 , 2.8% SiO2
479    // Float_t wcer[2]={0.972,0.028};
480    Float_t aCeramic[2]  = { 26.981539,15.9994 };
481    Float_t zCeramic[2]  = { 13.,8. };
482    Float_t wCeramic[2]  = { 2.,3. };
483    Float_t denscer  = 3.6;
484
485 // Brass 80% Cu, 20% Zn
486    Float_t abrass[2] = {63.546,65.39};
487    Float_t zbrass[2] = {29,30};
488    Float_t wbrass[2] = {0.8,0.2};
489    Float_t denbrass=8.96;
490
491 //Ribber C6H12S
492    Float_t aribber[3] = {12.,1.,32.};
493    Float_t zribber[3] = {6.,1.,16.};
494    Float_t wribber[3] = {6.,12.,1.};
495    Float_t denribber=0.8;
496 // Support inside 
497    Float_t asupport[2] = {12.,1.};
498    Float_t zsupport[2] = {6.,1.};
499    Float_t wsupport[2] = {1.,1.};
500    Float_t densupport=0.1;
501     
502 //*** Definition Of avaible START materials ***
503    AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
504    AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
505    AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
506    AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999); 
507    AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999); 
508
509    AliMixture( 3, "Ceramic  $",aCeramic, zCeramic, denscer, -2, wCeramic);
510    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
511    /* 
512   char namate[21]="";
513   
514    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
515    acer[0]=a;  
516
517    zcer[0]=z;
518    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
519    acer[1]=a;
520    zcer[1]=z;
521    AliMixture( 11, "Ceramic    $", acer, zcer, denscer, 2, wcer);
522    */ 
523     AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
524    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
525    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
526    AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
527    AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
528    AliMixture( 21, "PMT Optical glass   $",aglass,zglass,dglass,-2,wglass);
529    AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
530     AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
531    AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
532    
533    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
534    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
535    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
536    AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
537    AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
538    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
539    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
540    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
541    AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
542    AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
543    AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
544    AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);  
545    AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
546    AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
547    AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
548     AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
549
550
551 // Definition Cherenkov parameters
552    int i;
553    const Int_t kNbins=31;
554    
555    Float_t rindexSiO2[kNbins],  efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
556             
557    // quartz 20mm
558    Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4, 
559                              25.9, 25.3, 24.9, 24.5, 23.7, 
560                              23.2, 22.8, 22.4, 21.8, 21.3,
561                              22.8, 22.1, 21.7, 21.2, 20.5, 
562                              19.9, 19.3, 18.7, 18.0, 17.1, 
563                              16.3, 15.3, 14.3, 14.3   };
564           
565    Float_t aPckov[kNbins]  ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
566                              4.48, 4.58, 4.69, 4.81, 4.93, 
567                              5.05, 5.19, 5.33, 5.48, 5.63,
568                              5.8,  5.97, 6.16, 6.36, 6.57, 
569                              6.8,  7.04, 7.3,  7.58, 7.89, 
570                              8.22, 8.57, 8.97, 9.39 };  
571    /*     
572    Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
573                               0.21, 0.22, 0.23, 0.24, 0.26, 
574                               0.27, 0.29, 0.30, 0.29, 0.29, 
575                               0.28, 0.28, 0.27, 0.26, 0.25, 
576                               0.25, 0.23, 0.20, 0.19, 0.17,
577                               0.17, 0.17, 0.2, 0.23};
578    */     
579    //  Float_t aAbsSiO2[kNbins]; //quartz 30mm
580   for(i=0;i<kNbins;i++)
581     {
582       aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV   
583       rindexAir[i]=0;
584       rindexSiO2[i]=1.458; //refractive index for qwarts
585       rindexCathodeNext[i]=0;
586       efficAll[i]=1.;
587
588       //      aAbsSiO2[i]=28.5; //quartz 30mm
589       absorAir[i]=0.3;      
590       absorbCathodeNext[i]=0;
591
592     }
593   
594   
595    gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
596    // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
597    gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
598   gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
599    gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
600    
601    AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
602    
603    
604 }
605 //---------------------------------------------------------------------
606 void AliSTARTv1::DrawDetector()
607 {
608 //
609 // Draw a shaded view of the Forward multiplicity detector version 0
610 //
611   
612   //Set ALIC mother transparent
613   gMC->Gsatt("ALIC","SEEN",0);
614   //
615   //Set volumes visible
616   //  gMC->Gsatt("0STR","SEEN",0);
617   //  gMC->Gsatt("0INS","SEEN",0);
618   // gMC->Gsatt("0PMT","SEEN",1);
619   // gMC->Gsatt("0DIV","SEEN",1);
620   //
621   gMC->Gdopt("hide","off");
622   gMC->Gdopt("shad","on");
623   gMC->SetClipBox(".");
624   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
625   gMC->DefaultRange();
626   gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
627   //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
628   gMC->Gdhead(1111,"T-Zero detector");
629   gMC->Gdopt("hide","off");
630 }
631
632 //-------------------------------------------------------------------
633 void AliSTARTv1::Init()
634 {
635 // Initialises version 0 of the Forward Multiplicity Detector
636 //
637 //Int_t *idtmed  = gAlice->Idtmed();
638   AliSTART::Init();
639   fIdSens1=gMC->VolId("0REG");
640
641    AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
642
643 }
644
645 //-------------------------------------------------------------------
646
647 void AliSTARTv1::StepManager()
648 {
649   //
650   // Called for every step in the START Detector
651   //
652   Int_t id,copy,copy1;
653   static Float_t hits[6];
654   static Int_t vol[2];
655   TLorentzVector pos;
656   
657   //   TClonesArray &lhits = *fHits;
658   
659   if(!gMC->IsTrackAlive()) return; // particle has disappeared
660   
661   
662     // If particles is photon then ...
663   
664  if (gMC->TrackPid() == 50000050)
665   {
666       id=gMC->CurrentVolID(copy);
667       
668       
669       // Check the sensetive volume
670       if(id==fIdSens1 ) { 
671         if(gMC->IsTrackEntering()) {
672           gMC->CurrentVolOffID(2,copy);
673           vol[1]=copy;
674           gMC->CurrentVolOffID(3,copy1);
675           vol[0]=copy1;
676           gMC->TrackPosition(pos);
677           hits[0] = pos[0];
678           hits[1] = pos[1];
679           hits[2] = pos[2];
680           if(pos[2]<0) vol[0]=2;
681           if(pos[2]>=0) vol[0]=1; 
682           
683           Float_t etot=gMC->Etot();
684           hits[3]=etot;
685           Int_t iPart= gMC->TrackPid();
686           Int_t partID=gMC->IdFromPDG(iPart);
687           hits[4]=partID;
688           Float_t ttime=gMC->TrackTime();
689           hits[5]=ttime*1e12;
690           AddHit(fIshunt,vol,hits);
691           //  cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
692         }
693         /*              
694                 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
695                        gAlice->GetMCApp()->GetCurrentTrackNumber(),
696                gMC->IsTrackAlive(),
697                gMC->IsTrackDisappeared(),
698                gMC->IsTrackEntering(),
699                gMC->IsTrackExiting(),
700                gMC->IsTrackInside(),
701                gMC->IsTrackOut(),
702                gMC->IsTrackStop(),
703                gMC->IsNewTrack());
704         */              
705       } //sensitive
706   } //photon
707 }
708
709
710
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715