Modifications from A.Maevskaya
[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.                                    *
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 /*
17 $Log$
18 Revision 1.5  1999/09/29 09:24:29  fca
19 Introduction of the Copyright and cvs Log
20
21 */
22
23 /////////////////////////////////////////////////////////////////////
24 //                                                                 //
25 // START ( T-zero) detector  version 0                        //
26 //
27 //Begin Html       
28 /*
29 <img src="gif/AliSTARTv0Class.gif">
30 */
31 //End Html
32 //                                                                  //
33 //                                                                  //
34 //////////////////////////////////////////////////////////////////////
35
36 #include <TMath.h>
37 #include <TGeometry.h>
38 #include <TTUBE.h>
39 #include <TNode.h>
40
41 #include "AliSTARTv0.h"
42 #include "AliRun.h"
43 #include "AliMC.h"
44
45 #include <iostream.h>
46 #include <fstream.h>
47
48 //#include "TGeant3.h"
49 #include <stdlib.h>
50
51 ClassImp(AliSTARTv0)
52
53 //--------------------------------------------------------------------
54 AliSTARTv0::AliSTARTv0(const char *name, const char *title):
55  AliSTART(name,title)
56 {
57   //
58   // Standart constructor for START Detector version 0
59   //
60   fIdSens1=0;
61 //  setBufferSize(128000);
62 }
63 //-------------------------------------------------------------------------
64 void AliSTARTv0::CreateGeometry()
65 {
66   //
67   // Create the geometry of START Detector version 0
68   //
69   // begin Html
70   /*
71    <img src="gif/AliSTARTv0.gif">
72   */
73   //
74
75
76   Int_t *idtmed = fIdtmed->GetArray()-2099;
77   
78   Int_t is;
79   Int_t idrotm[999];
80   Float_t x,y,z;
81
82   Float_t pstart[3]={4.5,10.7,5.3};
83   Float_t ppmt[3]={0.,1.3,3.5};
84   Float_t pdivider[3]={0.,1.2,1.75};
85   Float_t pdiv2[3]={0.,1.2,1.25};
86   Float_t pdiv1[3]={0.6,1.2,0.5};
87   Float_t ptop[3]={0.,1.3,1.5};
88   Float_t pbot[3]={0.6,1.2,0.1};
89   Float_t pglass[3]={1.2,1.3,2.};
90   Float_t pcer[3]={0.9,1.1,0.09};
91   Float_t psteel[3]={0.9,1.1,0.01};
92   Float_t ppins[3]={0.6,1.2,0.014};
93   Float_t phole[3]={0.6,1.2,0.015};
94   Float_t pknob[3]={0.5,0.6,0.4};
95   Float_t pknob_vac[3]={0.,0.5,0.4};
96   Float_t pknob_bot[3]={0.,0.6,0.05};
97   Float_t pribber[3] = {0.,1.2,2.413/2.};
98   Float_t presist[3] = {0.,1.2,0.087/2.};
99
100   Float_t zdet=75.;
101  //-------------------------------------------------------------------
102  //  START volume 
103  //-------------------------------------------------------------------
104
105     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
106     gMC->Gsvolu("STRT","TUBE",idtmed[2101-1],pstart,3);
107     gMC->Gspos("STRT",1,"ALIC",0.,0.,zdet,0,"ONLY");
108     gMC->Gspos("STRT",2,"ALIC",0.,0.,-zdet,idrotm[901],"ONLY");
109
110 //START interior
111     gMC->Gsvolu("PMT ","TUBE",idtmed[2103-1],ppmt,3);     
112     gMC->Gsvolu("DIVI","TUBE",idtmed[2103-1],pdivider,3);     
113
114 // first ring: 13 units of Scintillator+PMT+divider
115     for (is=1; is<=13; is++)
116     {  
117       x=6.5*TMath::Sin(is*2*3.1415/13);
118       y=6.5*TMath::Cos(is*2*3.1415/13);
119       z=-pstart[2]+ppmt[2];
120       gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
121       z+=ppmt[2]+pdiv2[2];
122       printf(" is %d, z Divider %f\n",is,z);
123       gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
124     }
125 //second ring: 20 units of Scintillator+PMT+divider
126     for (is=14; is<=33;is++)  
127     {  
128       x=9.3*TMath::Sin(2.*3.1415/26+(is-13)*2*3.1415/20);
129       y=9.3*TMath::Cos(2.*3.1315/26+(is-13)*2*3.1415/20);
130       z=-pstart[2]+ppmt[2];
131       gMC->Gspos("PMT ",is,"STRT",x,y,z,0,"ONLY");
132       z+=ppmt[2]+pdiv2[2];
133       gMC->Gspos("DIVI",is,"STRT",x,y,z,0,"ONLY");
134     }
135 // PMT
136       
137 // Entry window (glass)
138       gMC->Gsvolu("PTOP","TUBE",idtmed[2106-1],ptop,3);
139       z=-ppmt[2]+ptop[2];
140       gMC->Gspos("PTOP",1,"PMT ",0,0,z,0,"ONLY");
141  //     printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
142 // Bottom glass
143       gMC->Gsvolu("PBOT","TUBE",idtmed[2106-1],pbot,3);
144       z=ppmt[2]-pbot[2];
145       printf("Z bottom %f\n",z);
146       gMC->Gspos("PBOT",1,"PMT ",0,0,z,0,"ONLY");
147 // Side cylinder glass
148       gMC->Gsvolu("POUT","TUBE",idtmed[2106-1],pglass,3);
149       z=ppmt[2]-pglass[2];
150 //      printf("Z glass %f\n",z);
151       gMC->Gspos("POUT",1,"PMT ",0,0,z,0,"ONLY");
152 //PMT electrodes support structure
153       gMC->Gsvolu("PCER","TUBE",idtmed[2104-1],pcer,3);
154       gMC->Gsvolu("PSTE","TUBE",idtmed[2108-1],psteel,3);
155       z=-ppmt[2]+2*ptop[2]+0.3;;
156 //      printf("Z Cer 1 %f\n",z);
157       for (is=1; is<=15; is++)
158       {
159          z=z+psteel[2]+pcer[2];
160          gMC->Gspos("PCER",is,"PMT",0,0,z,0,"ONLY");
161          z=z+psteel[2]+pcer[2];
162          gMC->Gspos("PSTE",is,"PMT",0,0,z,0,"ONLY");
163        }
164
165 // Divider
166 // Knob at the bottom of PMT baloon
167       gMC->Gsvolu("KNOB","TUBE",idtmed[2106-1],pknob,3);
168       z=-pdivider[2]+pknob[2];
169 //      printf("zknob %f\n",z);
170       gMC->Gspos("KNOB",1,"DIVI",0,0,z,0,"ONLY");
171       gMC->Gsvolu("KNBO","TUBE",idtmed[2106-1],pknob_bot,3);
172       z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
173 //      printf("knobbot %f\n",z);
174       gMC->Gspos("KNBO",1,"DIVI ",0,0,z,0,"ONLY");
175       gMC->Gsvolu("KNVA","TUBE",idtmed[2106-1],pknob_vac,3);
176       z=-pdivider[2]+pknob_vac[2];
177 //      printf("knobvac %f\n",z);
178       gMC->Gspos("KNVA",1,"DIVI",0,0,z,0,"ONLY");
179  //Steel pins + pin holes
180       gMC->Gsvolu("PINS","TUBE",idtmed[2108-1],ppins,3);
181       z=-pdivider[2]+ppins[2];
182       gMC->Gspos("PINS",1,"DIVI",0,0,z,0,"ONLY");
183       gMC->Gsvolu("HOLE","TUBE",idtmed[2111-1],phole,3);
184       z=-pdivider[2]+2*ppins[2]+phole[2];
185       gMC->Gspos("HOLE",1,"DIVI",0,0,z,0,"ONLY");
186
187 //Socket
188       gMC->Gsvolu("DIV1","TUBE",idtmed[2104-1],pdiv1,3);
189       z=-pdivider[2]+pdiv1[2];
190       gMC->Gspos("DIV1",1,"DIVI",0,0,z,0,"ONLY");
191 //Resistors
192       gMC->Gsvolu("DIV2","TUBE",idtmed[2101-1],pdiv2,3);
193       z=pdivider[2]-pdiv2[2];
194       gMC->Gspos("DIV2",1,"DIVI",0,0,z,0,"ONLY");
195       gMC->Gsvolu("DRES","TUBE",idtmed[2104-1],presist,3);
196       z=-pdiv2[2]+presist[2];
197       gMC->Gspos("DRES",1,"DIV2",0,0,z,0,"ONLY");
198       gMC->Gsvolu("DRIB","TUBE",idtmed[2109-1],pribber,3);
199       z=pdiv2[2]-pribber[2];
200       gMC->Gspos("DRIB",1,"DIV2",0,0,z,0,"ONLY");
201 //      printf("z DRIB %f\n",z);
202
203 }    
204 //------------------------------------------------------------------------
205 void AliSTARTv0::CreateMaterials()
206 {
207    Int_t ISXFLD   = gAlice->Field()->Integ();
208    Float_t SXMGMX = gAlice->Field()->Max();
209    Float_t a,z,d,radl,absl,buf[1];
210    Int_t nbuf;
211
212 // Scintillator CH
213    Float_t ascin[2]={1.01,12.01};
214    Float_t zscin[2]={1,6};
215    Float_t wscin[2]={1,1};
216    Float_t denscin=1.03;
217 // PMT glass SiO2
218     Float_t aglass[2]={28.0855,15.9994};
219     Float_t zglass[2]={14.,8.};
220     Float_t wglass[2]={1.,2.};
221     Float_t dglass=2.65;
222 // Ceramic   97.2% Al2O3 , 2.8% SiO2
223     Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
224     Float_t aal2o3[2]  = { 26.981539,15.9994 };
225     Float_t zal2o3[2]  = { 13.,8. };
226     Float_t wal2o3[2]  = { 2.,3. };
227     Float_t denscer  = 3.6;
228
229 // Brass 80% Cu, 20% Zn
230    Float_t abrass[2] = {63.546,65.39};
231    Float_t zbrass[2] = {29,30};
232    Float_t wbrass[2] = {0.8,0.2};
233    Float_t denbrass=8.96;
234
235 //Ribber C6H12S
236    Float_t aribber[3] = {12.,1.,32.};
237    Float_t zribber[3] = {6.,1.,16.};
238    Float_t wribber[3] = {6.,12.,1.};
239    Float_t denribber=0.8;
240  
241    
242 //*** Definition Of avaible START materials ***
243  AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
244  AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
245  AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999); 
246
247  AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
248  AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
249   char namate[21];
250   gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
251   acer[0]=a;
252   zcer[0]=z;
253   gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
254   acer[1]=a;
255   zcer[1]=z;
256   
257  AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
258  AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
259  AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
260
261  AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
262  
263  
264
265 //**
266  AliMedium(1, "START Air$", 2, 0, ISXFLD, SXMGMX, 10., .1, 1., .003, .003);
267  AliMedium(2, "Scintillator$", 5, 1, ISXFLD, SXMGMX, 10., .01, 1., .003, .003);
268  AliMedium(3, "Vacuum$", 1, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
269  AliMedium(4, "Ceramic$", 9, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
270  AliMedium(6, "Glass$", 4, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
271  AliMedium(8, "Steel$", 0, 0, ISXFLD, SXMGMX, 1., .001, 1., .001, .001);
272  AliMedium(11, "Brass  $", 6, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
273  AliMedium(9, "Ribber  $", 7, 0, ISXFLD, SXMGMX, 10., .01, .1, .003, .003);
274
275
276 }
277 //---------------------------------------------------------------------
278 void AliSTARTv0::DrawModule()
279 {
280 //
281 // Draw a shaded view of the Forward multiplicity detector version 0
282 //
283
284 //Set ALIC mother transparent
285 gMC->Gsatt("ALIC","SEEN",0);
286 //
287 //Set volumes visible
288 gMC->Gsatt("STRT","SEEN",0);
289 gMC->Gsatt("PMT ","SEEN",1);
290 gMC->Gsatt("DIVI","SEEN",1);
291 //
292 gMC->Gdopt("hide","on");
293 gMC->Gdopt("shad","on");
294 gMC->SetClipBox(".");
295 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
296 gMC->DefaultRange();
297 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
298 gMC->Gdhead(1111,"T-Zero detector");
299 gMC->Gdopt("hide","off");
300 }
301 //-------------------------------------------------------------------
302 void AliSTARTv0::Init()
303 {
304   // Initialises version 0 of the Forward Multiplicity Detector
305   //
306   
307   //Int_t *idtmed  = gAlice->Idtmed();
308   AliSTART::Init();
309   fIdSens1=gMC->VolId("PTOP");
310   printf("*** START version 0 initialized ***\n");
311  
312 }
313
314 //-------------------------------------------------------------------
315
316 void AliSTARTv0::StepManager()
317 {
318   //
319   // Called for every step in the START Detector
320   //
321   Int_t id,copy,copy1;
322   static Float_t hits[7];
323   static Float_t edep;
324   static Int_t vol[2];
325   TLorentzVector pos;
326
327   TClonesArray &lhits = *fHits;
328   //AliMC* gMC=AliMC::GetMC();
329   //  TGeant3* geant3= (TGeant3*)gMC; 
330   
331   if(!gMC->IsTrackAlive()) return; // particle has disappeared
332   Float_t charge = gMC->TrackCharge();
333   if(TMath::Abs(charge)<=0.) return; //take only charged particles
334  //    gMC->Gpcxyz();
335     id=gMC->CurrentVolID(copy);
336
337  
338 //  printf("igauto %d\n",gMC->ctrak->igauto);
339 //  printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
340 // Check the sensetive volume
341    if(id==fIdSens1 )
342    {
343      if(gMC->IsTrackEntering())
344      {
345        gMC->CurrentVolOffID(2,copy);
346        vol[0]=copy;
347        gMC->CurrentVolOffID(1,copy1);
348        vol[1]=copy1;
349        gMC->TrackPosition(pos);
350        hits[0] = pos[0];
351        hits[1] = pos[1];
352        hits[2] = pos[2];
353        Float_t etot=gMC->Etot();
354        hits[4]=etot;
355        Int_t part= gMC->TrackPid();
356        hits[5]=part;
357        Float_t ttime=gMC->TrackTime();
358        hits[6]=ttime*1e9;
359        edep=0;
360      }
361      if(gMC->IsTrackInside())
362      {
363        Float_t de=gMC->Edep(); 
364        edep=edep+de;
365 //       printf ("E deposition %f\n",edep);
366 //    for (i=0; i<=6; i++){
367 //    printf(" HITS on START inside %f\n",hits[i]); } 
368      }
369      if(gMC->IsTrackExiting())
370     {
371        Float_t de=gMC->Edep(); 
372        edep=edep+de;
373        hits[3]=edep*1e3;
374        //       for (i=0; i<=6; i++){
375        //        printf(" HITS on START Exit %f\n",hits[i]); } 
376        //for (i=0; i<=1; i++) { printf("START vol %d\n",vol[i]);}
377     
378     new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);      }
379     }
380 //---------------------------------------------------------------------
381     }
382
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