Modifing geometry
[u/mrichter/AliRoot.git] / START / AliSTARTv1.cxx
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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 <TMath.h>
31 #include <TGeometry.h>
32 #include <TTUBE.h>
33 #include <TNode.h>
34
35 #include "AliSTARTv1.h"
36 #include "AliRun.h"
37 #include "AliMC.h"
38 #include "AliSTARThit.h"
39
40 #include <iostream.h>
41 #include <fstream.h>
42
43 //#include "TGeant3.h"
44 #include <stdlib.h>
45
46 ClassImp(AliSTARTv1)
47
48 //--------------------------------------------------------------------
49 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
50  AliSTART(name,title)
51 {
52   //
53   // Standart constructor for START Detector version 0
54   //
55   fIdSens1=0;
56 //  setBufferSize(128000);
57 }
58 //-------------------------------------------------------------------------
59 void AliSTARTv1::CreateGeometry()
60 {
61   //
62   // Create the geometry of START Detector version 0
63   //
64   // begin Html
65   /*
66    <img src="gif/AliSTARTv0.gif">
67   */
68   //
69
70
71   Int_t *idtmed = fIdtmed->GetArray();
72   
73   Int_t is;
74   Int_t idrotm[999];
75   Float_t x,y,z;
76
77   Float_t pstart[3]={4.5,10.7,5.3};
78   Float_t ppmt[3]={0.,1.3,3.5};
79   Float_t pdivider[3]={0.,1.2,1.75};
80   Float_t pdiv2[3]={0.,1.2,1.25};
81   Float_t pdiv1[3]={0.6,1.2,0.5};
82   Float_t ptop[3]={0.,1.3,1.5};
83   Float_t pbot[3]={0.6,1.2,0.1};
84   Float_t pglass[3]={1.2,1.3,2.};
85   Float_t pcer[3]={0.9,1.1,0.09};
86   Float_t psteel[3]={0.9,1.1,0.01};
87   Float_t ppins[3]={0.6,1.2,0.014};
88   Float_t phole[3]={0.6,1.2,0.015};
89   Float_t pknob[3]={0.5,0.6,0.4};
90   Float_t pknob_vac[3]={0.,0.5,0.4};
91   Float_t pknob_bot[3]={0.,0.6,0.05};
92   Float_t pribber[3] = {0.,1.2,2.413/2.};
93   Float_t presist[3] = {0.,1.2,0.087/2.};
94
95   Float_t zdet=75.;
96  //-------------------------------------------------------------------
97  //  START volume 
98  //-------------------------------------------------------------------
99   
100   //  Float_t theta=TMath::ATan(6.5/zdet);
101   Float_t theta=(180./3.1415)*TMath::ATan(6.5/zdet);
102     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
103     
104     gMC->Gsvolu("STRT","TUBE",idtmed[1],pstart,3);
105     gMC->Gspos("STRT",1,"ALIC",0.,0.,zdet,0,"ONLY");
106     gMC->Gspos("STRT",2,"ALIC",0.,0.,-zdet,idrotm[901],"ONLY");
107
108 //START interior
109     gMC->Gsvolu("PMT ","TUBE",idtmed[3],ppmt,3);     
110     gMC->Gsvolu("DIVI","TUBE",idtmed[3],pdivider,3);     
111
112 // first ring: 12 units of Scintillator+PMT+divider
113     Double_t dang1 = 2*TMath::Pi()/12;
114     for (is=1; is<=12; is++)
115       {  
116         AliMatrix(idrotm[901+is], 
117                   90.-theta, 30.*is, 
118                   90.,       90.+30.*is,
119                   theta,    180.+30.*is); 
120         x=6.5*TMath::Sin(is*dang1);
121         y=6.5*TMath::Cos(is*dang1);
122         z=-pstart[2]+ppmt[2];
123         gMC->Gspos("PMT ",is,"STRT",x,y,z,idrotm[901+is],"ONLY");
124         printf("z PMT %f\n",z);
125         z=z+ppmt[2]+pdiv2[2]-pdiv1[2];
126         printf(" is %d, z Divider %f\n",is,z);
127         gMC->Gspos("DIVI",is,"STRT",x,y,z,idrotm[901+is],"ONLY");
128       }
129      /*  
130 //second ring: 20 units of Scintillator+PMT+divider
131       Double_t dang2 = 2*TMath::Pi()/26;
132       Double_t dang3 = 2*TMath::Pi()/20;
133        for (is=14; is<=33;is++)  
134      {  
135      x=9.3*TMath::Sin(dang2+(is-13)*dang3);
136      y=9.3*TMath::Cos(dang2+(is-13)*dang3);
137       z=-pstart[2]+ppmt[2];
138       gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
139       z=z+ppmt[2]+pdiv2[2];
140       gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
141       }
142      */
143 // PMT
144       
145     // Entry window (glass)
146     gMC->Gsvolu("PTOP","TUBE",idtmed[6],ptop,3);
147     z=-ppmt[2]+ptop[2];
148     gMC->Gspos("PTOP",1,"PMT ",0,0,z,0,"ONLY");
149     //     printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
150     // Bottom glass
151     gMC->Gsvolu("PBOT","TUBE",idtmed[6],pbot,3);
152     z=ppmt[2]-pbot[2];
153     printf("Z bottom %f\n",z);
154     gMC->Gspos("PBOT",1,"PMT ",0,0,z,0,"ONLY");
155     // Side cylinder glass
156     gMC->Gsvolu("POUT","TUBE",idtmed[6],pglass,3);
157     z=ppmt[2]-pglass[2];
158     //      printf("Z glass %f\n",z);
159     gMC->Gspos("POUT",1,"PMT ",0,0,z,0,"ONLY");
160     //PMT electrodes support structure
161     gMC->Gsvolu("PCER","TUBE",idtmed[4],pcer,3);
162     gMC->Gsvolu("PSTE","TUBE",idtmed[8],psteel,3);
163     z=-ppmt[2]+2*ptop[2]+0.3;;
164     //      printf("Z Cer 1 %f\n",z);
165     for (is=1; is<=15; is++)
166       {
167         z=z+psteel[2]+pcer[2];
168         gMC->Gspos("PCER",is,"PMT",0,0,z,0,"ONLY");
169         z=z+psteel[2]+pcer[2];
170         gMC->Gspos("PSTE",is,"PMT",0,0,z,0,"ONLY");
171       }
172     
173     // Divider
174     // Knob at the bottom of PMT baloon
175     
176     gMC->Gsvolu("KNOB","TUBE",idtmed[6],pknob,3);
177     z=-pdivider[2]+pknob[2];
178     //      printf("zknob %f\n",z);
179     gMC->Gspos("KNOB",1,"DIVI",0,0,z,0,"ONLY");
180     gMC->Gsvolu("KNBO","TUBE",idtmed[6],pknob_bot,3);
181     z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
182     //      printf("knobbot %f\n",z);
183     gMC->Gspos("KNBO",1,"DIVI ",0,0,z,0,"ONLY");
184     gMC->Gsvolu("KNVA","TUBE",idtmed[3],pknob_vac,3);
185     z=-pdivider[2]+pknob_vac[2];
186     //      printf("knobvac %f\n",z);
187     gMC->Gspos("KNVA",1,"DIVI",0,0,z,0,"ONLY");
188     //Steel pins + pin holes
189     gMC->Gsvolu("PINS","TUBE",idtmed[8],ppins,3);
190     z=-pdivider[2]+ppins[2];
191     gMC->Gspos("PINS",1,"DIVI",0,0,z,0,"ONLY");
192     gMC->Gsvolu("HOLE","TUBE",idtmed[11],phole,3);
193     z=-pdivider[2]+2*ppins[2]+phole[2];
194     gMC->Gspos("HOLE",1,"DIVI",0,0,z,0,"ONLY");
195     
196     //Socket
197     gMC->Gsvolu("DIV1","TUBE",idtmed[4],pdiv1,3);
198     z=-pdivider[2]+pdiv1[2];
199     gMC->Gspos("DIV1",1,"DIVI",0,0,z,0,"ONLY");
200     //Resistors
201     gMC->Gsvolu("DIV2","TUBE",idtmed[1],pdiv2,3);
202     z=pdivider[2]-pdiv2[2];
203     gMC->Gspos("DIV2",1,"DIVI",0,0,z,0,"ONLY");
204     gMC->Gsvolu("DRES","TUBE",idtmed[4],presist,3);
205     z=-pdiv2[2]+presist[2];
206     gMC->Gspos("DRES",1,"DIV2",0,0,z,0,"ONLY");
207     gMC->Gsvolu("DRIB","TUBE",idtmed[9],pribber,3);
208     z=pdiv2[2]-pribber[2];
209     gMC->Gspos("DRIB",1,"DIV2",0,0,z,0,"ONLY");
210     //      printf("z DRIB %f\n",z);
211     
212     
213 }    
214 //------------------------------------------------------------------------
215 void AliSTARTv1::CreateMaterials()
216 {
217    Int_t ISXFLD   = gAlice->Field()->Integ();
218    Float_t SXMGMX = gAlice->Field()->Max();
219    Float_t a,z,d,radl,absl,buf[1];
220    Int_t nbuf;
221
222 // Scintillator CH
223    Float_t ascin[2]={1.01,12.01};
224    Float_t zscin[2]={1,6};
225    Float_t wscin[2]={1,1};
226    Float_t denscin=1.03;
227 // PMT glass SiO2
228    Float_t aglass[2]={28.0855,15.9994};
229    Float_t zglass[2]={14.,8.};
230    Float_t wglass[2]={1.,2.};
231    Float_t dglass=2.65;
232 // Ceramic   97.2% Al2O3 , 2.8% SiO2
233    Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
234    Float_t aal2o3[2]  = { 26.981539,15.9994 };
235    Float_t zal2o3[2]  = { 13.,8. };
236    Float_t wal2o3[2]  = { 2.,3. };
237    Float_t denscer  = 3.6;
238
239 // Brass 80% Cu, 20% Zn
240    Float_t abrass[2] = {63.546,65.39};
241    Float_t zbrass[2] = {29,30};
242    Float_t wbrass[2] = {0.8,0.2};
243    Float_t denbrass=8.96;
244
245 //Ribber C6H12S
246    Float_t aribber[3] = {12.,1.,32.};
247    Float_t zribber[3] = {6.,1.,16.};
248    Float_t wribber[3] = {6.,12.,1.};
249    Float_t denribber=0.8;
250    /*
251 // Definition Cherenkov parameters
252    Float_t ppckov[14] = { 5.63e-9,5.77e-9,5.9e-9,6.05e-9,6.2e-9,6.36e-9,6.52e-9,6.7e-9,6.88e-9,7.08e-9,7.3e-9,7.51e-9,7.74e-9,8e-9 };
253    Float_t rindex_quarz[14] = { 1.528309,1.533333,
254                                 1.538243,1.544223,1.550568,1.55777,
255                                 1.565463,1.574765,1.584831,1.597027,
256                                 1.611858,1.6277,1.6472,1.6724 };
257  
258    Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
259                                 6.324,4.483,1.6,.323,.073,0. };
260    */
261    Int_t *idtmed = fIdtmed->GetArray()-2100;
262     
263    //  TGeant3 *geant3 = (TGeant3*) gMC;
264     
265 //*** Definition Of avaible START materials ***
266    AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
267    AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
268    AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999); 
269
270    AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
271    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
272    char namate[21];
273    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
274    acer[0]=a;
275    zcer[0]=z;
276    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
277    acer[1]=a;
278    zcer[1]=z;
279    
280    AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
281    AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
282    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
283    
284    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
285    
286    
287    AliMedium(1, "START Air$", 2, 0, ISXFLD, SXMGMX, 10., .1, 1., .003, .003);
288    AliMedium(2, "Scintillator$", 5, 1, ISXFLD, SXMGMX, 10., .01, 1., .003, .003);
289    AliMedium(3, "Vacuum$", 1, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
290    AliMedium(4, "Ceramic$", 9, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
291    AliMedium(6, "Glass$", 4, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
292    AliMedium(8, "Steel$", 0, 0, ISXFLD, SXMGMX, 1., .001, 1., .001, .001);
293    AliMedium(9, "Ribber  $", 7, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
294    AliMedium(11, "Brass  $", 6, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
295    cout<<"++++++++++++++Medium set++++++++++"<<endl;
296
297 //  geant3->Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
298
299 }
300 //---------------------------------------------------------------------
301 void AliSTARTv1::DrawDetector()
302 {
303 //
304 // Draw a shaded view of the Forward multiplicity detector version 0
305 //
306   
307   //Set ALIC mother transparent
308   gMC->Gsatt("ALIC","SEEN",0);
309   //
310   //Set volumes visible
311   gMC->Gsatt("STRT","SEEN",0);
312   gMC->Gsatt("PMT ","SEEN",1);
313   gMC->Gsatt("DIVI","SEEN",1);
314   //
315   gMC->Gdopt("hide","on");
316   gMC->Gdopt("shad","on");
317   gMC->SetClipBox(".");
318   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
319   gMC->DefaultRange();
320   gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
321   gMC->Gdhead(1111,"T-Zero detector");
322   gMC->Gdopt("hide","off");
323 }
324
325 //-------------------------------------------------------------------
326 void AliSTARTv1::Init()
327 {
328 // Initialises version 0 of the Forward Multiplicity Detector
329 //
330 //Int_t *idtmed  = gAlice->Idtmed();
331   AliSTART::Init();
332   fIdSens1=gMC->VolId("PTOP");
333   printf("*** START version 0 initialized ***\n");
334  
335 }
336
337 //-------------------------------------------------------------------
338
339 void AliSTARTv1::StepManager()
340 {
341   //
342   // Called for every step in the START Detector
343   //
344   Int_t id,copy,copy1;
345   static Float_t hits[7];
346   static Float_t edep;
347   static Int_t vol[2];
348   TLorentzVector pos;
349   
350   TClonesArray &lhits = *fHits;
351   
352   if(!gMC->IsTrackAlive()) return; // particle has disappeared
353   Float_t charge = gMC->TrackCharge();
354   if(TMath::Abs(charge)<=0.) return; //take only charged particles
355   id=gMC->CurrentVolID(copy);
356   
357   
358   //  printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
359   // Check the sensetive volume
360   if(id==fIdSens1 ) {
361     if(gMC->IsTrackEntering()) {
362       gMC->CurrentVolOffID(2,copy);
363       vol[0]=copy;
364       gMC->CurrentVolOffID(1,copy1);
365       vol[1]=copy1;
366       gMC->TrackPosition(pos);
367       hits[0] = pos[0];
368       hits[1] = pos[1];
369       hits[2] = pos[2];
370       Float_t etot=gMC->Etot();
371       hits[4]=etot;
372       Int_t part= gMC->TrackPid();
373       hits[5]=part;
374       Float_t ttime=gMC->TrackTime();
375       hits[6]=ttime*1e9;
376       edep=0;
377     }
378     if(gMC->IsTrackInside())    {
379       Float_t de=gMC->Edep(); 
380       edep=edep+de;
381       //       printf ("E deposition %f\n",edep);
382       //    for (i=0; i<=6; i++){
383       //    printf(" HITS on START inside %f\n",hits[i]); } 
384     }
385     if(gMC->IsTrackExiting())   {
386       Float_t de=gMC->Edep(); 
387       edep=edep+de;
388       hits[3]=edep*1e3;
389       Int_t i;
390       for (i=0; i<=6; i++){
391         printf(" HITS on START Exit %f\n",hits[i]); } 
392       for (i=0; i<=1; i++) { printf("START vol %d\n",vol[i]);}
393      
394       new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);      
395     }
396   }
397 //---------------------------------------------------------------------
398 }
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