263b08d64dad5e02ecdfe5717d6adcecb7a44d95
[u/mrichter/AliRoot.git] / START / AliSTARTv0.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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15
16 /*
17 $Log$
18 */
19
20 /////////////////////////////////////////////////////////////////////
21 //                                                                 //
22 // START ( T-zero) detector  version 0                        //
23 //
24 //Begin Html       
25 /*
26 <img src="gif/AliSTARTv0Class.gif">
27 */
28 //End Html
29 //                                                                  //
30 //                                                                  //
31 //////////////////////////////////////////////////////////////////////
32
33 #include <TMath.h>
34 #include <TGeometry.h>
35 #include <TTUBE.h>
36 #include <TNode.h>
37
38 #include "AliSTARTv0.h"
39 #include "AliRun.h"
40 #include "AliMC.h"
41
42 #include <iostream.h>
43 #include <fstream.h>
44
45 //#include "TGeant3.h"
46 #include <stdlib.h>
47
48 ClassImp(AliSTARTv0)
49
50 //--------------------------------------------------------------------
51 AliSTARTv0::AliSTARTv0(const char *name, const char *title):
52  AliSTART(name,title)
53 {
54   //
55   // Standart constructor for START Detector version 0
56   //
57   fIdSens1=0;
58 //  setBufferSize(128000);
59 }
60 //-------------------------------------------------------------------------
61 void AliSTARTv0::CreateGeometry()
62 {
63   //
64   // Create the geometry of START Detector version 0
65   //
66   // begin Html
67   /*
68    <img src="gif/AliSTARTv0.gif">
69   */
70   //
71
72
73   Int_t *idtmed = fIdtmed->GetArray()-2099;
74   
75   Int_t is;
76   Int_t idrotm[999];
77   Float_t x,y,z;
78
79   Float_t pstart[3]={4.5,10.7,5.3};
80   //  Float_t pscin[3]={0.,2.54/2.,1.5};
81   Float_t ppmt[3]={0.,1.3,3.5};
82   Float_t pdivider[3]={0.,1.2,1.75};
83   Float_t pdiv2[3]={0.,1.2,1.25};
84   Float_t pdiv1[3]={0.6,1.2,0.5};
85   Float_t ptop[3]={0.,1.3,1.5};
86   Float_t pbot[3]={0.6,1.2,0.1};
87   Float_t pglass[3]={1.2,1.3,2.};
88   Float_t pcer[3]={0.9,1.1,0.09};
89   Float_t psteel[3]={0.9,1.1,0.01};
90   Float_t ppins[3]={0.6,1.2,0.014};
91   Float_t phole[3]={0.6,1.2,0.015};
92   Float_t pknob[3]={0.5,0.6,0.4};
93   Float_t pknob_vac[3]={0.,0.5,0.4};
94   Float_t pknob_bot[3]={0.,0.6,0.05};
95   Float_t pribber[3] = {0.,1.2,2.413/2.};
96   Float_t presist[3] = {0.,1.2,0.087/2.};
97
98   Float_t zdet=75.;
99  //-------------------------------------------------------------------
100  //  START volume 
101  //-------------------------------------------------------------------
102
103     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
104     gMC->Gsvolu("STRT","TUBE",idtmed[2101-1],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("SCIN","TUBE",idtmed[2102-1],pscin,3);
110     gMC->Gsvolu("PMT ","TUBE",idtmed[2103-1],ppmt,3);     
111     gMC->Gsvolu("DIVI","TUBE",idtmed[2103-1],pdivider,3);     
112
113 // first ring: 13 units of Scintillator+PMT+divider
114     for (is=1; is<=13; is++)
115     {  
116       x=6.5*TMath::Sin(is*2*3.1415/13);
117       y=6.5*TMath::Cos(is*2*3.1415/13);
118       z=-pstart[2]+ppmt[2];
119       printf(" is %d x %f y %f r%f\n",is,x,y,sqrt(x*x+y*y));
120       //      gMC->Gspos("SCIN",is,"STRT",x,y,z,0,"ONLY");
121       //      z=z+pscin[2]+ppmt[2];
122       gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
123       z=ppmt[2]+pdivider[2];
124       printf(" is %d, z Divider %f\n",is,z);
125       gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
126     }
127 //second ring: 20 units of Scintillator+PMT+divider
128     for (is=14; is<=33;is++)  
129     {  
130       x=9.3*TMath::Sin(2.*3.1415/26+(is-13)*2*3.1415/20);
131       y=9.3*TMath::Cos(2.*3.1315/26+(is-13)*2*3.1415/20);
132       z=-pstart[2]+ppmt[2];
133       //      gMC->Gspos("SCIN",is,"STRT",x,y,z,0,"ONLY");
134       //z=z+pscin[2]+ppmt[2];
135       gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
136       z=ppmt[2]+pdiv2[2];
137       gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
138     }
139 // PMT
140       
141 // Entry window (glass)
142       gMC->Gsvolu("PTOP","TUBE",idtmed[2106-1],ptop,3);
143       z=-ppmt[2]+ptop[2];
144       gMC->Gspos("PTOP",1,"PMT ",0,0,z,0,"ONLY");
145  //     printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
146 // Bottom glass
147       gMC->Gsvolu("PBOT","TUBE",idtmed[2106-1],pbot,3);
148       z=ppmt[2]-pbot[2];
149       printf("Z bottom %f\n",z);
150       gMC->Gspos("PBOT",1,"PMT ",0,0,z,0,"ONLY");
151 // Side cylinder glass
152       gMC->Gsvolu("POUT","TUBE",idtmed[2106-1],pglass,3);
153       z=ppmt[2]-pglass[2];
154 //      printf("Z glass %f\n",z);
155       gMC->Gspos("POUT",1,"PMT ",0,0,z,0,"ONLY");
156 //PMT electrodes support structure
157       gMC->Gsvolu("PCER","TUBE",idtmed[2104-1],pcer,3);
158       gMC->Gsvolu("PSTE","TUBE",idtmed[2108-1],psteel,3);
159       z=-ppmt[2]+2*ptop[2]+0.3;;
160 //      printf("Z Cer 1 %f\n",z);
161       for (is=1; is<=15; is++)
162       {
163          z=z+psteel[2]+pcer[2];
164          gMC->Gspos("PCER",is,"PMT",0,0,z,0,"ONLY");
165          z=z+psteel[2]+pcer[2];
166          gMC->Gspos("PSTE",is,"PMT",0,0,z,0,"ONLY");
167        }
168
169 // Divider
170 // Knob at the bottom of PMT baloon
171       gMC->Gsvolu("KNOB","TUBE",idtmed[2106-1],pknob,3);
172       z=-pdivider[2]+pknob[2];
173 //      printf("zknob %f\n",z);
174       gMC->Gspos("KNOB",1,"DIVI",0,0,z,0,"ONLY");
175       gMC->Gsvolu("KNBO","TUBE",idtmed[2106-1],pknob_bot,3);
176       z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
177 //      printf("knobbot %f\n",z);
178       gMC->Gspos("KNBO",1,"DIVI ",0,0,z,0,"ONLY");
179       gMC->Gsvolu("KNVA","TUBE",idtmed[2106-1],pknob_vac,3);
180       z=-pdivider[2]+pknob_vac[2];
181 //      printf("knobvac %f\n",z);
182       gMC->Gspos("KNVA",1,"DIVI",0,0,z,0,"ONLY");
183  //Steel pins + pin holes
184       gMC->Gsvolu("PINS","TUBE",idtmed[2108-1],ppins,3);
185       z=-pdivider[2]+ppins[2];
186       gMC->Gspos("PINS",1,"DIVI",0,0,z,0,"ONLY");
187       gMC->Gsvolu("HOLE","TUBE",idtmed[2111-1],phole,3);
188       z=-pdivider[2]+2*ppins[2]+phole[2];
189       gMC->Gspos("HOLE",1,"DIVI",0,0,z,0,"ONLY");
190
191 //Socket
192       gMC->Gsvolu("DIV1","TUBE",idtmed[2104-1],pdiv1,3);
193       z=-pdivider[2]+pdiv1[2];
194       gMC->Gspos("DIV1",1,"DIVI",0,0,z,0,"ONLY");
195 //Resistors
196       gMC->Gsvolu("DIV2","TUBE",idtmed[2101-1],pdiv2,3);
197       z=pdivider[2]-pdiv2[2];
198       gMC->Gspos("DIV2",1,"DIVI",0,0,z,0,"ONLY");
199       gMC->Gsvolu("DRES","TUBE",idtmed[2104-1],presist,3);
200       z=-pdiv2[2]+presist[2];
201       gMC->Gspos("DRES",1,"DIV2",0,0,z,0,"ONLY");
202       gMC->Gsvolu("DRIB","TUBE",idtmed[2109-1],pribber,3);
203       z=pdiv2[2]-pribber[2];
204       gMC->Gspos("DRIB",1,"DIV2",0,0,z,0,"ONLY");
205 //      printf("z DRIB %f\n",z);
206
207 }    
208 //------------------------------------------------------------------------
209 void AliSTARTv0::CreateMaterials()
210 {
211    Int_t ISXFLD   = gAlice->Field()->Integ();
212    Float_t SXMGMX = gAlice->Field()->Max();
213    Float_t a,z,d,radl,absl,buf[1];
214    Int_t nbuf;
215
216 // Scintillator CH
217    //    Float_t ascin[2]={1.01,12.01};
218    // Float_t zscin[2]={1,6};
219    // Float_t wscin[2]={1,1};
220    // Float_t denscin=1.03;
221 // PMT glass SiO2
222     Float_t aglass[2]={28.0855,15.9994};
223     Float_t zglass[2]={14.,8.};
224     Float_t wglass[2]={1.,2.};
225     Float_t dglass=2.65;
226 // Ceramic   97.2% Al2O3 , 2.8% SiO2
227     Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
228     Float_t aal2o3[2]  = { 26.981539,15.9994 };
229     Float_t zal2o3[2]  = { 13.,8. };
230     Float_t wal2o3[2]  = { 2.,3. };
231     Float_t denscer  = 3.6;
232
233 // Brass 80% Cu, 20% Zn
234    Float_t abrass[2] = {63.546,65.39};
235    Float_t zbrass[2] = {29,30};
236    Float_t wbrass[2] = {0.8,0.2};
237    Float_t denbrass=8.96;
238
239 //Ribber C6H12S
240    Float_t aribber[3] = {12.,1.,32.};
241    Float_t zribber[3] = {6.,1.,16.};
242    Float_t wribber[3] = {6.,12.,1.};
243    Float_t denribber=0.8;
244  
245    
246 //   AliMC* gMC = AliMC::GetMC();
247
248  //  Int_t *idtmed = gAlice->Idtmed();
249  //  Int_t imat;
250
251 //*** Definition Of avaible START materials ***
252  AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
253  AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
254  AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999); 
255
256  AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
257  AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
258   char namate[21];
259   gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
260   acer[0]=a;
261   zcer[0]=z;
262   gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
263   acer[1]=a;
264   zcer[1]=z;
265   
266  AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
267  // AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
268  AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
269
270  AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
271  
272  
273
274 //**
275  AliMedium(1, "START Air$", 2, 0, ISXFLD, SXMGMX, 10., .1, 1., .003, .003);
276  // AliMedium(2102, "Scintillator$", 5, 1, ISXFLD, SXMGMX, 10., .01, 1., .003, .003);
277  AliMedium(3, "Vacuum$", 1, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
278  AliMedium(4, "Ceramic$", 9, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
279  AliMedium(6, "Glass$", 4, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
280  AliMedium(8, "Steel$", 0, 0, ISXFLD, SXMGMX, 1., .001, 1., .001, .001);
281  AliMedium(11, "Brass  $", 6, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
282  AliMedium(9, "Ribber  $", 7, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
283
284
285 }
286 //---------------------------------------------------------------------
287 void AliSTARTv0::DrawModule()
288 {
289 //
290 // Draw a shaded view of the Forward multiplicity detector version 0
291 //
292
293 //Set ALIC mother transparent
294 gMC->Gsatt("ALIC","SEEN",0);
295 //
296 //Set volumes visible
297 gMC->Gsatt("STRT","SEEN",0);
298 //gMC->Gsatt("SCIN","SEEN",1);
299 gMC->Gsatt("PMT ","SEEN",1);
300 gMC->Gsatt("DIVI","SEEN",1);
301 //
302 gMC->Gdopt("hide","on");
303 gMC->Gdopt("shad","on");
304 gMC->SetClipBox(".");
305 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
306 gMC->DefaultRange();
307 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
308 gMC->Gdhead(1111,"T-Zero detector");
309 gMC->Gdopt("hide","off");
310 }
311 //-------------------------------------------------------------------
312 void AliSTARTv0::Init()
313 {
314   // Initialises version 0 of the Forward Multiplicity Detector
315   //
316   
317   //Int_t *idtmed  = gAlice->Idtmed();
318   AliSTART::Init();
319   fIdSens1=gMC->VolId("PTOP");
320   printf("*** START version 0 initialized ***\n");
321  
322 }
323
324 //-------------------------------------------------------------------
325
326 void AliSTARTv0::StepManager()
327 {
328   //
329   // Called for every step in the START Detector
330   //
331   Int_t id,copy,copy1;
332   static Float_t hits[7];
333   static Float_t edep;
334   static Int_t vol[2];
335   TLorentzVector pos;
336
337   TClonesArray &lhits = *fHits;
338   //AliMC* gMC=AliMC::GetMC();
339   //  TGeant3* geant3= (TGeant3*)gMC; 
340   
341   if(!gMC->IsTrackAlive()) return; // particle has disappeared
342   Float_t charge = gMC->TrackCharge();
343   if(TMath::Abs(charge)<=0.) return; //take only charged particles
344  //    gMC->Gpcxyz();
345     id=gMC->CurrentVolID(copy);
346
347  
348 //  printf("igauto %d\n",gMC->ctrak->igauto);
349 //  printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
350 // Check the sensetive volume
351    if(id==fIdSens1 )
352    {
353      if(gMC->IsTrackEntering())
354      {
355        gMC->CurrentVolOffID(2,copy);
356        vol[0]=copy;
357        gMC->CurrentVolOffID(1,copy1);
358        vol[1]=copy1;
359        gMC->TrackPosition(pos);
360        hits[0] = pos[0];
361        hits[1] = pos[1];
362        hits[2] = pos[2];
363        Float_t etot=gMC->Etot();
364        hits[4]=etot;
365        Int_t part= gMC->TrackPid();
366        hits[5]=part;
367        Float_t ttime=gMC->TrackTime();
368        hits[6]=ttime*1e9;
369        edep=0;
370        //       Float_t xV=geant3->Gckine()->vert[0];
371        //Float_t yV=geant3->Gckine()->vert[1];
372        //Float_t zV=geant3->Gckine()->vert[2];
373        //Float_t tl=gMC -> TrackLength();
374        //      if(hits[6]<2.4){     
375        //           for (i=0; i<=6; i++){
376        //           printf(" HITS on START entr %f\n",hits[i]);} 
377        //}
378      }
379      if(gMC->IsTrackInside())
380      {
381        Float_t de=gMC->Edep(); 
382        edep=edep+de;
383 //       printf ("E deposition %f\n",edep);
384 //    for (i=0; i<=6; i++){
385 //    printf(" HITS on START inside %f\n",hits[i]); } 
386      }
387      if(gMC->IsTrackExiting())
388     {
389        Float_t de=gMC->Edep(); 
390        edep=edep+de;
391        hits[3]=edep*1e3;
392        //       for (i=0; i<=6; i++){
393        //        printf(" HITS on START Exit %f\n",hits[i]); } 
394        //for (i=0; i<=1; i++) { printf("START vol %d\n",vol[i]);}
395     
396     new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);      }
397     }
398 //---------------------------------------------------------------------
399     }
400  //}
401
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