1b37782ee7300a8fe343f670a8c7a232f10e04f7
[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 1.11  2001/04/04 12:10:18  alla
19 changes according Coding Convension
20
21 Revision 1.10  2000/12/04 08:48:19  alibrary
22 Fixing problems in the HEAD
23
24 Revision 1.9  2000/10/02 21:28:13  fca
25 Removal of useless dependecies via forward declarations
26
27 Revision 1.8  2000/07/13 16:41:29  fca
28 New START corrected for coding conventions
29
30 Revision 1.7  2000/01/21 15:45:23  fca
31 New Version from Alla
32
33 Revision 1.6  1999/11/12 15:04:00  fca
34 Modifications from A.Maevskaya
35
36 Revision 1.5  1999/09/29 09:24:29  fca
37 Introduction of the Copyright and cvs Log
38
39 */ 
40
41 /////////////////////////////////////////////////////////////////////
42 //                                                                 //
43 // START ( T-zero) detector  version 0                        //
44 //
45 //Begin Html       
46 /*
47 <img src="gif/AliSTARTv0Class.gif">
48 */
49 //End Html
50 //                                                                  //
51 //                                                                  //
52 //////////////////////////////////////////////////////////////////////
53
54 #include <TMath.h>
55 #include <TGeometry.h>
56 #include <TTUBE.h>
57 #include <TNode.h>
58 #include <TLorentzVector.h>
59
60 #include "AliSTARTv0.h"
61 #include "AliRun.h"
62 #include "AliMC.h"
63 #include "AliMagF.h"
64 #include "AliSTARThit.h"
65
66 #include <iostream.h>
67 #include <fstream.h>
68
69 //#include "TGeant3.h"
70 #include <stdlib.h>
71
72 ClassImp(AliSTARTv0)
73
74 //--------------------------------------------------------------------
75 AliSTARTv0::AliSTARTv0(const char *name, const char *title):
76  AliSTART(name,title)
77 {
78   //
79   // Standart constructor for START Detector version 0
80   //
81   fIdSens1=0;
82 //  setBufferSize(128000);
83 }
84 //-------------------------------------------------------------------------
85 void AliSTARTv0::CreateGeometry()
86 {
87   //
88   // Create the geometry of START Detector version 0
89   //
90   // begin Html
91   /*
92    <img src="gif/AliSTARTv0.gif">
93   */
94   //
95
96
97   Int_t *idtmed = fIdtmed->GetArray();
98   
99   Int_t is;
100   Int_t idrotm[999];
101   Float_t x,y,z;
102
103   Float_t pstart[3]={4.5,10.7,5.3};
104   Float_t ppmt[3]={0.,1.3,3.5};
105   Float_t pdivider[3]={0.,1.2,1.75};
106   Float_t pdiv2[3]={0.,1.2,1.25};
107   Float_t pdiv1[3]={0.6,1.2,0.5};
108   Float_t ptop[3]={0.,1.3,1.5};
109   Float_t pbot[3]={0.6,1.2,0.1};
110   Float_t pglass[3]={1.2,1.3,2.};
111   Float_t pcer[3]={0.9,1.1,0.09};
112   Float_t psteel[3]={0.9,1.1,0.01};
113   Float_t ppins[3]={0.6,1.2,0.014};
114   Float_t phole[3]={0.6,1.2,0.015};
115   Float_t pknob[3]={0.5,0.6,0.4};
116   Float_t pknob_vac[3]={0.,0.5,0.4};
117   Float_t pknob_bot[3]={0.,0.6,0.05};
118   Float_t pribber[3] = {0.,1.2,2.413/2.};
119   Float_t presist[3] = {0.,1.2,0.087/2.};
120
121   Float_t zdet=75.;
122  //-------------------------------------------------------------------
123  //  START volume 
124  //-------------------------------------------------------------------
125   
126     AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
127     gMC->Gsvolu("0STA","TUBE",idtmed[1],pstart,3);
128     gMC->Gspos("0STA",1,"ALIC",0.,0.,zdet,0,"ONLY");
129     gMC->Gspos("0STA",2,"ALIC",0.,0.,-zdet,idrotm[901],"ONLY");
130
131 //START interior
132     gMC->Gsvolu("0PMT","TUBE",idtmed[3],ppmt,3);     
133     gMC->Gsvolu("0DIV","TUBE",idtmed[3],pdivider,3);     
134
135 // first ring: 12 units of Scintillator+PMT+divider
136     Double_t dang1 = 2*TMath::Pi()/12;
137     for (is=1; is<=12; is++)
138       {  
139         x=6.5*TMath::Sin(is*dang1);
140         y=6.5*TMath::Cos(is*dang1);
141         z=-pstart[2]+ppmt[2];
142         gMC->Gspos("0PMT",is,"0STA",x,y,z,0,"ONLY");
143         printf("z PMT %f\n",z);
144         z=z+ppmt[2]+pdiv2[2];
145         printf(" is %d, z Divider %f\n",is,z);
146         gMC->Gspos("0DIV",is,"0STA",x,y,z,0,"ONLY");
147       }
148      /*  
149 //second ring: 20 units of Scintillator+PMT+divider
150       Double_t dang2 = 2*TMath::Pi()/26;
151       Double_t dang3 = 2*TMath::Pi()/20;
152        for (is=14; is<=33;is++)  
153      {  
154      x=9.3*TMath::Sin(dang2+(is-13)*dang3);
155      y=9.3*TMath::Cos(dang2+(is-13)*dang3);
156       z=-pstart[2]+ppmt[2];
157       gMC->Gspos("0PMT",is,"0ST",x,y,z,0,"ONLY");
158       z=z+ppmt[2]+pdiv2[2];
159       gMC->Gspos("0DI",is,"0ST",x,y,z,0,"ONLY");
160       }
161      */
162 // PMT
163       
164     // Entry window (glass)
165     gMC->Gsvolu("0TOP","TUBE",idtmed[6],ptop,3);
166     z=-ppmt[2]+ptop[2];
167     gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
168     //     printf("Z PTOP %f -ppmt[2] %f ptop[2] %f\n",z,-ppmt[2],ptop[2]);
169     // Bottom glass
170     gMC->Gsvolu("0BO","TUBE",idtmed[6],pbot,3);
171     z=ppmt[2]-pbot[2];
172     printf("Z bottom %f\n",z);
173     gMC->Gspos("0BO",1,"0PMT",0,0,z,0,"ONLY");
174     // Side cylinder glass
175     gMC->Gsvolu("0UO","TUBE",idtmed[6],pglass,3);
176     z=ppmt[2]-pglass[2];
177     //      printf("Z glass %f\n",z);
178     gMC->Gspos("0UO",1,"0PMT",0,0,z,0,"ONLY");
179     //PMT electrodes support structure
180     gMC->Gsvolu("0CE","TUBE",idtmed[4],pcer,3);
181     gMC->Gsvolu("0IR","TUBE",idtmed[8],psteel,3);
182     z=-ppmt[2]+2*ptop[2]+0.3;;
183     //      printf("Z Cer 1 %f\n",z);
184     for (is=1; is<=15; is++)
185       {
186         z=z+psteel[2]+pcer[2];
187         gMC->Gspos("0CE",is,"0PMT",0,0,z,0,"ONLY");
188         z=z+psteel[2]+pcer[2];
189         gMC->Gspos("0IR",is,"0PMT",0,0,z,0,"ONLY");
190       }
191     
192     // Divider
193     // Knob at the bottom of PMT baloon
194     
195     gMC->Gsvolu("0OB","TUBE",idtmed[6],pknob,3);
196     z=-pdivider[2]+pknob[2];
197     //      printf("zknob %f\n",z);
198     gMC->Gspos("0OB",1,"0DIV",0,0,z,0,"ONLY");
199     gMC->Gsvolu("0KB","TUBE",idtmed[6],pknob_bot,3);
200     z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
201     //      printf("knobbot %f\n",z);
202     gMC->Gspos("0KB",1,"0DIV",0,0,z,0,"ONLY");
203     gMC->Gsvolu("0VA","TUBE",idtmed[6],pknob_vac,3);
204     z=-pdivider[2]+pknob_vac[2];
205     //      printf("knobvac %f\n",z);
206     gMC->Gspos("0VA",1,"0DIV",0,0,z,0,"ONLY");
207     //Steel pins + pin holes
208     gMC->Gsvolu("0PI","TUBE",idtmed[8],ppins,3);
209     z=-pdivider[2]+ppins[2];
210     gMC->Gspos("0PI",1,"0DIV",0,0,z,0,"ONLY");
211     gMC->Gsvolu("0HO","TUBE",idtmed[11],phole,3);
212     z=-pdivider[2]+2*ppins[2]+phole[2];
213     gMC->Gspos("0HO",1,"0DIV",0,0,z,0,"ONLY");
214     
215     //Socket
216     gMC->Gsvolu("0V1","TUBE",idtmed[4],pdiv1,3);
217     z=-pdivider[2]+pdiv1[2];
218     gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
219     //Resistors
220     gMC->Gsvolu("0V2","TUBE",idtmed[1],pdiv2,3);
221     z=pdivider[2]-pdiv2[2];
222     gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
223     gMC->Gsvolu("0DR","TUBE",idtmed[4],presist,3);
224     z=-pdiv2[2]+presist[2];
225     gMC->Gspos("0DR",1,"0V2",0,0,z,0,"ONLY");
226     gMC->Gsvolu("0RB","TUBE",idtmed[9],pribber,3);
227     z=pdiv2[2]-pribber[2];
228     gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
229     //      printf("z DRIB %f\n",z);
230     
231     
232 }    
233 //------------------------------------------------------------------------
234 void AliSTARTv0::CreateMaterials()
235 {
236    Int_t isxfld   = gAlice->Field()->Integ();
237    Float_t sxmgmx = gAlice->Field()->Max();
238    Float_t a,z,d,radl,absl,buf[1];
239    Int_t nbuf;
240
241 // Scintillator CH
242    Float_t ascin[2]={1.01,12.01};
243    Float_t zscin[2]={1,6};
244    Float_t wscin[2]={1,1};
245    Float_t denscin=1.03;
246 // PMT glass SiO2
247    Float_t aglass[2]={28.0855,15.9994};
248    Float_t zglass[2]={14.,8.};
249    Float_t wglass[2]={1.,2.};
250    Float_t dglass=2.65;
251 // Ceramic   97.2% Al2O3 , 2.8% SiO2
252    Float_t acer[2],zcer[2],wcer[2]={0.972,0.028};
253    Float_t aal2o3[2]  = { 26.981539,15.9994 };
254    Float_t zal2o3[2]  = { 13.,8. };
255    Float_t wal2o3[2]  = { 2.,3. };
256    Float_t denscer  = 3.6;
257
258 // Brass 80% Cu, 20% Zn
259    Float_t abrass[2] = {63.546,65.39};
260    Float_t zbrass[2] = {29,30};
261    Float_t wbrass[2] = {0.8,0.2};
262    Float_t denbrass=8.96;
263
264 //Ribber C6H12S
265    Float_t aribber[3] = {12.,1.,32.};
266    Float_t zribber[3] = {6.,1.,16.};
267    Float_t wribber[3] = {6.,12.,1.};
268    Float_t denribber=0.8;
269    /*
270 // Definition Cherenkov parameters
271    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 };
272    Float_t rindex_quarz[14] = { 1.528309,1.533333,
273                                 1.538243,1.544223,1.550568,1.55777,
274                                 1.565463,1.574765,1.584831,1.597027,
275                                 1.611858,1.6277,1.6472,1.6724 };
276  
277    Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
278                                 6.324,4.483,1.6,.323,.073,0. };
279    */
280    //   Int_t *idtmed = fIdtmed->GetArray()-999;
281     
282    //  TGeant3 *geant3 = (TGeant3*) gMC;
283     
284 //*** Definition Of avaible START materials ***
285    AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
286    AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
287    AliMaterial(2, "START Air$", 14.61, 7.3, .001205, 30423.,999); 
288
289    AliMixture( 3, "Al2O3   $", aal2o3, zal2o3, denscer, -2, wal2o3);
290    AliMixture( 4, "PMT glass   $",aglass,zglass,dglass,-2,wglass);
291    char namate[21];
292    gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
293    acer[0]=a;
294    zcer[0]=z;
295    gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
296    acer[1]=a;
297    zcer[1]=z;
298    
299    AliMixture( 9, "Ceramic    $", acer, zcer, denscer, 2, wcer);
300    AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
301    AliMixture( 6, "Brass    $", abrass, zbrass, denbrass, 2, wbrass);
302    
303    AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
304    
305    
306    AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
307    AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
308    AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
309    AliMedium(4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
310    AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
311    AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
312    AliMedium(11, "Brass  $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
313    AliMedium(9, "Ribber  $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
314
315 //  geant3->Gsckov(idtmed[2105], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
316
317 }
318 //---------------------------------------------------------------------
319 void AliSTARTv0::DrawModule()
320 {
321 //
322 // Draw a shaded view of the Forward multiplicity detector version 0
323 //
324   
325   //Set ALIC mother transparent
326   gMC->Gsatt("ALIC","SEEN",0);
327   //
328   //Set volumes visible
329   gMC->Gsatt("0STA","SEEN",0);
330   gMC->Gsatt("0PMT","SEEN",1);
331   gMC->Gsatt("0DIV","SEEN",1);
332   //
333   gMC->Gdopt("hide","on");
334   gMC->Gdopt("shad","on");
335   gMC->SetClipBox(".");
336   gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
337   gMC->DefaultRange();
338   gMC->Gdraw("alic",40,30,0,12,9.5,.7,0.7);
339   gMC->Gdhead(1111,"T-Zero detector");
340   gMC->Gdopt("hide","off");
341 }
342
343 //-------------------------------------------------------------------
344 void AliSTARTv0::Init()
345 {
346 // Initialises version 0 of the Forward Multiplicity Detector
347 //
348 //Int_t *idtmed  = gAlice->Idtmed();
349   AliSTART::Init();
350   fIdSens1=gMC->VolId("0TOP");
351   printf("*** START version 0 initialized ***\n");
352  
353 }
354
355 //-------------------------------------------------------------------
356
357 void AliSTARTv0::StepManager()
358 {
359   //
360   // Called for every step in the START Detector
361   //
362   Int_t id,copy,copy1;
363   static Float_t hits[7];
364   static Float_t edep;
365   static Int_t vol[2];
366   TLorentzVector pos;
367   
368   TClonesArray &lhits = *fHits;
369   
370   if(!gMC->IsTrackAlive()) return; // particle has disappeared
371   Float_t charge = gMC->TrackCharge();
372   if(TMath::Abs(charge)<=0.) return; //take only charged particles
373   //    gMC->Gpcxyz();
374   id=gMC->CurrentVolID(copy);
375   
376   
377   //  printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
378   // Check the sensetive volume
379   if(id==fIdSens1 ) {
380     if(gMC->IsTrackEntering()) {
381       gMC->CurrentVolOffID(2,copy);
382       vol[0]=copy;
383       gMC->CurrentVolOffID(1,copy1);
384       vol[1]=copy1;
385       gMC->TrackPosition(pos);
386       hits[0] = pos[0];
387       hits[1] = pos[1];
388       hits[2] = pos[2];
389       Float_t etot=gMC->Etot();
390       hits[4]=etot;
391       Int_t part= gMC->TrackPid();
392       hits[5]=part;
393       Float_t ttime=gMC->TrackTime();
394       hits[6]=ttime*1e9;
395       edep=0;
396     }
397     if(gMC->IsTrackInside())    {
398       Float_t de=gMC->Edep(); 
399       edep=edep+de;
400       //       printf ("E deposition %f\n",edep);
401       //    for (i=0; i<=6; i++){
402       //    printf(" HITS on START inside %f\n",hits[i]); } 
403     }
404     if(gMC->IsTrackExiting())   {
405       Float_t de=gMC->Edep(); 
406       edep=edep+de;
407       hits[3]=edep*1e3;
408
409       //       for (i=0; i<=6; i++){
410       //         printf(" HITS on START Exit %f\n",hits[i]); } 
411       //for (i=0; i<=1; i++) { printf("START vol %d\n",vol[i]);}
412      
413       new(lhits[fNhits++]) AliSTARThit(fIshunt,gAlice->CurrentTrack(),vol,hits);      
414     }
415   }
416 //---------------------------------------------------------------------
417 }
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