New START corrected for coding conventions
[u/mrichter/AliRoot.git] / START / AliSTARTv1.cxx
1 /**************************************************************************
2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3  *                                                                        *
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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 pinstart[3]={0.,1.3,5.25};
79   Float_t ppmt[3]={0.,1.3,3.5};
80   Float_t pdivider[3]={0.,1.2,1.75};
81   Float_t pdiv2[3]={0.,1.2,1.25};
82   Float_t pdiv1[3]={0.6,1.2,0.5};
83   Float_t ptop[3]={0.,1.3,1.5};
84   Float_t pbot[3]={0.6,1.2,0.1};
85   Float_t pglass[3]={1.2,1.3,2.};
86   Float_t pcer[3]={0.9,1.1,0.09};
87   Float_t psteel[3]={0.9,1.1,0.01};
88   Float_t ppins[3]={0.6,1.2,0.014};
89   Float_t phole[3]={0.6,1.2,0.015};
90   Float_t pknob[3]={0.5,0.6,0.4};
91   Float_t pknob_vac[3]={0.,0.5,0.4};
92   Float_t pknob_bot[3]={0.,0.6,0.05};
93   Float_t pribber[3] = {0.,1.2,2.413/2.};
94   Float_t presist[3] = {0.,1.2,0.087/2.};
95
96   Float_t zdet=75.;
97  //-------------------------------------------------------------------
98  //  START volume 
99  //-------------------------------------------------------------------
100   
101   //  Float_t theta=TMath::ATan(6.5/zdet);
102   Float_t theta=(180./3.1415)*TMath::ATan(6.5/zdet);
103     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
104     
105     gMC->Gsvolu("STRT","TUBE",idtmed[1],pstart,3);
106     gMC->Gspos("STRT",1,"ALIC",0.,0.,zdet,0,"ONLY");
107     gMC->Gspos("STRT",2,"ALIC",0.,0.,-zdet,idrotm[901],"ONLY");
108
109 //START interior
110     gMC->Gsvolu("INST","TUBE",idtmed[1],pinstart,3);
111     gMC->Gsvolu("PMT ","TUBE",idtmed[3],ppmt,3);     
112     gMC->Gsvolu("DIVI","TUBE",idtmed[3],pdivider,3);     
113
114 // first ring: 12 units of Scintillator+PMT+divider
115     Double_t dang1 = 2*TMath::Pi()/12;
116     for (is=1; is<=12; is++)
117       {  
118         AliMatrix(idrotm[901+is], 
119                   90.-theta, 30.*is, 
120                   90.,       90.+30.*is,
121                   theta,    180.+30.*is); 
122         x=6.5*TMath::Sin(is*dang1);
123         y=6.5*TMath::Cos(is*dang1);
124         z=-pstart[2]+pinstart[2];
125         gMC->Gspos("INST",is,"STRT",x,y,z,idrotm[901+is],"ONLY");
126         printf("z PMT %f\n",z);
127
128         
129         x=0;
130         y=0;
131         z=-pinstart[2]+ppmt[2];
132         printf(" is %d, z Divider %f\n",is,z);
133         gMC->Gspos("PMT ",is,"INST",x,y,z,0,"ONLY");
134         z=pinstart[2]-pdivider[2];
135         gMC->Gspos("DIVI",is,"INST",x,y,z,0,"ONLY");
136       }
137      /*  
138 //second ring: 20 units of Scintillator+PMT+divider
139       Double_t dang2 = 2*TMath::Pi()/26;
140       Double_t dang3 = 2*TMath::Pi()/20;
141        for (is=14; is<=33;is++)  
142      {  
143      x=9.3*TMath::Sin(dang2+(is-13)*dang3);
144      y=9.3*TMath::Cos(dang2+(is-13)*dang3);
145       z=-pstart[2]+ppmt[2];
146       gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
147       z=z+ppmt[2]+pdiv2[2];
148       gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
149       }
150      */
151 // PMT
152       
153     // Entry window (glass)
154     gMC->Gsvolu("PTOP","TUBE",idtmed[6],ptop,3);
155     z=-ppmt[2]+ptop[2];
156     gMC->Gspos("PTOP",1,"PMT ",0,0,z,0,"ONLY");
157     //     printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
158     // Bottom glass
159     gMC->Gsvolu("PBOT","TUBE",idtmed[6],pbot,3);
160     z=ppmt[2]-pbot[2];
161     printf("Z bottom %f\n",z);
162     gMC->Gspos("PBOT",1,"PMT ",0,0,z,0,"ONLY");
163     // Side cylinder glass
164     gMC->Gsvolu("POUT","TUBE",idtmed[6],pglass,3);
165     z=ppmt[2]-pglass[2];
166     //      printf("Z glass %f\n",z);
167     gMC->Gspos("POUT",1,"PMT ",0,0,z,0,"ONLY");
168     //PMT electrodes support structure
169     gMC->Gsvolu("PCER","TUBE",idtmed[4],pcer,3);
170     gMC->Gsvolu("PSTE","TUBE",idtmed[8],psteel,3);
171     z=-ppmt[2]+2*ptop[2]+0.3;;
172     //      printf("Z Cer 1 %f\n",z);
173     for (is=1; is<=15; is++)
174       {
175         z=z+psteel[2]+pcer[2];
176         gMC->Gspos("PCER",is,"PMT",0,0,z,0,"ONLY");
177         z=z+psteel[2]+pcer[2];
178         gMC->Gspos("PSTE",is,"PMT",0,0,z,0,"ONLY");
179       }
180     
181     // Divider
182     // Knob at the bottom of PMT baloon
183     
184     gMC->Gsvolu("KNOB","TUBE",idtmed[6],pknob,3);
185     z=-pdivider[2]+pknob[2];
186     //      printf("zknob %f\n",z);
187     gMC->Gspos("KNOB",1,"DIVI",0,0,z,0,"ONLY");
188     gMC->Gsvolu("KNBO","TUBE",idtmed[6],pknob_bot,3);
189     z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
190     //      printf("knobbot %f\n",z);
191     gMC->Gspos("KNBO",1,"DIVI ",0,0,z,0,"ONLY");
192     gMC->Gsvolu("KNVA","TUBE",idtmed[3],pknob_vac,3);
193     z=-pdivider[2]+pknob_vac[2];
194     //      printf("knobvac %f\n",z);
195     gMC->Gspos("KNVA",1,"DIVI",0,0,z,0,"ONLY");
196     //Steel pins + pin holes
197     gMC->Gsvolu("PINS","TUBE",idtmed[8],ppins,3);
198     z=-pdivider[2]+ppins[2];
199     gMC->Gspos("PINS",1,"DIVI",0,0,z,0,"ONLY");
200     gMC->Gsvolu("HOLE","TUBE",idtmed[11],phole,3);
201     z=-pdivider[2]+2*ppins[2]+phole[2];
202     gMC->Gspos("HOLE",1,"DIVI",0,0,z,0,"ONLY");
203     
204     //Socket
205     gMC->Gsvolu("DIV1","TUBE",idtmed[4],pdiv1,3);
206     z=-pdivider[2]+pdiv1[2];
207     gMC->Gspos("DIV1",1,"DIVI",0,0,z,0,"ONLY");
208     //Resistors
209     gMC->Gsvolu("DIV2","TUBE",idtmed[1],pdiv2,3);
210     z=pdivider[2]-pdiv2[2];
211     gMC->Gspos("DIV2",1,"DIVI",0,0,z,0,"ONLY");
212     gMC->Gsvolu("DRES","TUBE",idtmed[4],presist,3);
213     z=-pdiv2[2]+presist[2];
214     gMC->Gspos("DRES",1,"DIV2",0,0,z,0,"ONLY");
215     gMC->Gsvolu("DRIB","TUBE",idtmed[9],pribber,3);
216     z=pdiv2[2]-pribber[2];
217     gMC->Gspos("DRIB",1,"DIV2",0,0,z,0,"ONLY");
218     //      printf("z DRIB %f\n",z);
219     
220     
221 }    
222 //------------------------------------------------------------------------
223 void AliSTARTv1::CreateMaterials()
224 {
225    Int_t isxfld   = gAlice->Field()->Integ();
226    Float_t sxmgmx = gAlice->Field()->Max();
227    Float_t a,z,d,radl,absl,buf[1];
228    Int_t nbuf;
229
230 // Scintillator CH
231    Float_t ascin[2]={1.01,12.01};
232    Float_t zscin[2]={1,6};
233    Float_t wscin[2]={1,1};
234    Float_t denscin=1.03;
235 // PMT glass SiO2
236    Float_t aglass[2]={28.0855,15.9994};
237    Float_t zglass[2]={14.,8.};
238    Float_t wglass[2]={1.,2.};
239    Float_t dglass=2.65;
240 // Ceramic   97.2% Al2O3 , 2.8% SiO2
241    Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
242    Float_t aal2o3[2]  = { 26.981539,15.9994 };
243    Float_t zal2o3[2]  = { 13.,8. };
244    Float_t wal2o3[2]  = { 2.,3. };
245    Float_t denscer  = 3.6;
246
247 // Brass 80% Cu, 20% Zn
248    Float_t abrass[2] = {63.546,65.39};
249    Float_t zbrass[2] = {29,30};
250    Float_t wbrass[2] = {0.8,0.2};
251    Float_t denbrass=8.96;
252
253 //Ribber C6H12S
254    Float_t aribber[3] = {12.,1.,32.};
255    Float_t zribber[3] = {6.,1.,16.};
256    Float_t wribber[3] = {6.,12.,1.};
257    Float_t denribber=0.8;
258    /*
259 // Definition Cherenkov parameters
260    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 };
261    Float_t rindex_quarz[14] = { 1.528309,1.533333,
262                                 1.538243,1.544223,1.550568,1.55777,
263                                 1.565463,1.574765,1.584831,1.597027,
264                                 1.611858,1.6277,1.6472,1.6724 };
265  
266    Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
267                                 6.324,4.483,1.6,.323,.073,0. };
268    */
269     
270 //*** Definition Of avaible START materials ***
271    AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
272    AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
273    AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999); 
274
275    AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
276    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
277    char namate[21];
278    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
279    acer[0]=a;
280    zcer[0]=z;
281    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
282    acer[1]=a;
283    zcer[1]=z;
284    
285    AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
286    AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
287    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
288    
289    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
290    
291    
292    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
293    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
294    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
295    AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
296    AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
297    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
298    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
299    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
300    cout<<"++++++++++++++Medium set++++++++++"<<endl;
301
302 //  geant3->Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
303
304 }
305 //---------------------------------------------------------------------
306 void AliSTARTv1::DrawDetector()
307 {
308 //
309 // Draw a shaded view of the Forward multiplicity detector version 0
310 //
311   
312   //Set ALIC mother transparent
313   gMC->Gsatt("ALIC","SEEN",0);
314   //
315   //Set volumes visible
316   //  gMC->Gsatt("STRT","SEEN",0);
317   gMC->Gsatt("INST","SEEN",0);
318   gMC->Gsatt("PMT ","SEEN",1);
319   gMC->Gsatt("DIVI","SEEN",1);
320   //
321   gMC->Gdopt("hide","on");
322   gMC->Gdopt("shad","on");
323   gMC->SetClipBox(".");
324   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
325   gMC->DefaultRange();
326   gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
327   gMC->Gdhead(1111,"T-Zero detector");
328   gMC->Gdopt("hide","off");
329 }
330
331 //-------------------------------------------------------------------
332 void AliSTARTv1::Init()
333 {
334 // Initialises version 0 of the Forward Multiplicity Detector
335 //
336 //Int_t *idtmed  = gAlice->Idtmed();
337   AliSTART::Init();
338   fIdSens1=gMC->VolId("PTOP");
339   printf("*** START version 0 initialized ***\n");
340  
341 }
342
343 //-------------------------------------------------------------------
344
345 void AliSTARTv1::StepManager()
346 {
347   //
348   // Called for every step in the START Detector
349   //
350   Int_t id,copy,copy1;
351   static Float_t hits[7];
352   static Float_t edep;
353   static Int_t vol[2];
354   TLorentzVector pos;
355   
356   TClonesArray &lhits = *fHits;
357   
358   if(!gMC->IsTrackAlive()) return; // particle has disappeared
359   Float_t charge = gMC->TrackCharge();
360   if(TMath::Abs(charge)<=0.) return; //take only charged particles
361   id=gMC->CurrentVolID(copy);
362   
363   
364   //  printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
365   // Check the sensetive volume
366   if(id==fIdSens1 ) {
367     if(gMC->IsTrackEntering()) {
368       gMC->CurrentVolOffID(2,copy);
369       vol[0]=copy;
370       gMC->CurrentVolOffID(1,copy1);
371       vol[1]=copy1;
372       gMC->TrackPosition(pos);
373       hits[0] = pos[0];
374       hits[1] = pos[1];
375       hits[2] = pos[2];
376       Float_t etot=gMC->Etot();
377       hits[4]=etot;
378       Int_t iPart= gMC->TrackPid();
379       Int_t partID=gMC->IdFromPDG(iPart);
380       hits[5]=partID;
381       Float_t ttime=gMC->TrackTime();
382       hits[6]=ttime*1e9;
383       edep=0;
384     }
385     if(gMC->IsTrackInside())    {
386       Float_t de=gMC->Edep(); 
387       edep=edep+de;
388       //       printf ("E deposition %f\n",edep);
389       //    for (i=0; i<=6; i++){
390       //    printf(" HITS on START inside %f\n",hits[i]); } 
391     }
392     if(gMC->IsTrackExiting())   {
393       Float_t de=gMC->Edep(); 
394       edep=edep+de;
395       hits[3]=edep*1e3;
396       Int_t i;
397       for (i=0; i<=6; i++){
398         printf(" HITS on START Exit %f\n",hits[i]); } 
399       //      for (i=0; i<=1; i++) { printf("START vol %d\n",vol[i]);}
400      
401       new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);      
402     }
403   }
404 //---------------------------------------------------------------------
405 }
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