New version of FMD code (A.Maevskaia)
[u/mrichter/AliRoot.git] / FMD / AliFMDv0.cxx
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15  /////////////////////////////////////////////////////////////////////
16 //                                                                 //
17 // Forward Multiplicity detector based on Silicon version 0        //
18 //
19 //Begin Html       
20 /*
21 <img src="gif/AliFMDv0Class.gif">
22 */
23 //End Html
24 //                                                                  //
25 //                                                                  //
26 //////////////////////////////////////////////////////////////////////
27
28 #include <TMath.h>
29 #include <TGeometry.h>
30 #include <TTUBE.h>
31 #include <TNode.h>
32 #include <TLorentzVector.h>
33 #include "AliFMDv0.h"
34 #include "AliRun.h"
35 #include "AliMC.h"
36 #include <iostream.h>
37 #include <fstream.h>
38 #include "AliRndm.h"
39 #include "AliMagF.h"
40 #include "AliFMDhit.h"
41 #include <stdlib.h>
42
43 //class TGeant3;
44 ClassImp(AliFMDv0)
45
46 //--------------------------------------------------------------------
47 AliFMDv0::AliFMDv0(const char *name, const char *title):
48  AliFMD(name,title)
49 {
50   //
51   // Standart constructor for Forward Multiplicity Detector version 0
52   //
53   fIdSens1=0;
54   fIdSens2=0;
55   fIdSens3=0;
56   fIdSens4=0;
57   fIdSens5=0;
58 //  setBufferSize(128000);
59 }
60 //-------------------------------------------------------------------------
61
62 void AliFMDv0::CreateGeometry()
63 {
64  //
65   // Create the geometry of Forward Multiplicity Detector version 0
66   //Detector consists of 5 volumes: 
67   // 1st covered pseudorapidity interval from 3.58 to 2.03
68   // and placed on 62.8cm in Z-direction;
69   // 2nd - from 1.94 to 1.51 and Z=75.2 cm;
70   // 3d  - the same pseudorapidity interval as the 1st 
71   // but on the other side from the interaction point z=-62.8cm;
72   // 4th - simmetricaly with the 2nd : 
73   // pseudorapidity from 1.94 to 1.51, Z=-75.2cm   
74   // 5th - from 3.71 to 5.28, Z=-345cm
75   // Each part has 300mkm Si (sensetive area, detector itself),
76   // 0.75cm of plastic simulated electronics material,
77   // Al support ring 2cm thickness and 1cm width placed on 
78   // the outer radius of each Si disk;
79    //
80   // begin Html
81   /*
82    <img src="gif/AliFMDv0.gif">
83    */
84   //
85
86   Int_t *idtmed = fIdtmed->GetArray();
87    
88   Int_t ifmd;
89   Int_t idrotm[999];
90   Float_t zfmd,par[3];
91   char name[5], nameSi[5], nameSector[5], nameRing[5];
92
93   Float_t rin[6], rout[6],zpos;
94
95   Float_t etain[5]= {3.58, 1.94, 3.58, 1.94, 5.28};
96   Float_t etaout[6]={2.03, 1.51, 2.03, 1.51, 3.71};
97   //  Float_t z[6]={64., 85., -64., -85., -270., -630};
98   Float_t z[6]={62.8, 75.2, -62.8, -75.2, -345.};
99   Float_t zDet=0.03;
100   Float_t zElectronic=0.1;
101   Float_t zSupport=1.;
102   /*
103   Float_t etain[6]= {3.3, 2.0, 3.3, 2.0, 4.5, 5.5};
104   Float_t etaout[6]={2.0, 1.6, 2.0, 1.6, 3.3, 4.5};
105   Float_t z[6]={64., 85., -64., -85., -240., -630};
106   Float_t zDet=0.04;
107   Float_t zElectronic=0.75;
108   Float_t zSupport=1.;
109   */
110
111   Float_t zFMD=1.;
112 //-------------------------------------------------------------------
113  //  FMD 
114  //------------------------------------------------------------------
115
116   AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
117
118   //  gMC->Gsvolu("GSI","TUBE", idtmed[1], par, 0);
119   gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0);
120   gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0);
121
122   for (ifmd =0; ifmd < 5; ifmd++){
123
124     sprintf(name,"FMD%d",ifmd+1);
125     sprintf(nameSi,"GSI%d",ifmd+1);
126     sprintf(nameSector,"GSC%d",ifmd+1);
127     sprintf(nameRing,"GRN%d",ifmd+1);
128     printf(name,nameSi);
129     
130     zfmd=TMath::Abs(z[ifmd]);
131     printf("zfmd %f z[ifmd] %f",zfmd,z[ifmd]);
132     AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]);
133     AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]);
134     
135     par[0]=rin[ifmd]; // pipe size
136     par[1]=rout[ifmd];
137     par[2]=zFMD/2;
138     gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3);
139     //    par[2]=zDet/2;
140     gMC->Gsvolu(nameSi,"TUBE", idtmed[1], par, 0);
141     
142     printf ("rin %f rout %f ZFMD %f\n",par[0],par[1],z[ifmd]);
143     if (z[ifmd] < 0){  
144       gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
145     else { 
146       gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
147   //Silicon detector
148     par[2]=zDet/2;
149     zpos=zFMD/2 -par[2];
150     gMC->Gsposp(nameSi,ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
151     cout<<" Si "<<nameSi<<" ifmd "<<ifmd<<" rin "<<par[0]<<" rout "<<par[1]<<
152       " zDet "<<par[2]<<endl;
153     //Granularity
154     cout<<"fSectorsSi1 "<<fSectorsSi1<<
155       " fRingsSi1 "<<fRingsSi1<<
156       " fSectorsSi2 "<<fSectorsSi2<<
157       " fRingsSi2 "<<fRingsSi2<<endl;
158    if(ifmd==1||ifmd==3)
159       { 
160         gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
161         gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
162       }
163     else
164       {
165         gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
166         gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
167       }
168
169     //Plastic slice for electronics
170     par[2]=zElectronic/2;
171     zpos=zpos-zDet/2-par[2];
172     gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
173
174    //Simple Al support
175    par[1]=rout[ifmd];
176    par[0]=rout[ifmd]-2;
177    par[2]=zSupport/2;
178    zpos=zpos-zElectronic/2-par[2];
179    //   gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
180    
181
182   }  
183
184 }    
185
186
187 //------------------------------------------------------------------------
188 void AliFMDv0::CreateMaterials()
189 {
190  Int_t isxfld   = gAlice->Field()->Integ();
191  Float_t sxmgmx = gAlice->Field()->Max();
192
193  // Plastic CH
194  Float_t aPlastic[2]={1.01,12.01};
195  Float_t zPlastic[2]={1,6};
196  Float_t wPlastic[2]={1,1};
197  Float_t denPlastic=1.03;
198    //
199  
200  //*** Definition Of avaible FMD materials ***
201  AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999);
202  AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999);
203  AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999); 
204  AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
205  
206
207 //**
208  AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
209  AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
210  AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
211  AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx,  10., .01, 1., .003, .003);
212  
213
214
215 }
216 //---------------------------------------------------------------------
217 void AliFMDv0::DrawDetector()
218 {
219 //
220 // Draw a shaded view of the Forward multiplicity detector version 0
221 //
222
223 AliMC* pMC = AliMC::GetMC();
224
225 //Set ALIC mother transparent
226 pMC->Gsatt("ALIC","SEEN",0);
227 //
228 //Set volumes visible
229 gMC->Gsatt("FMD0","SEEN",1);
230 gMC->Gsatt("FMD1","SEEN",1);
231 gMC->Gsatt("FMD2","SEEN",1);
232 gMC->Gsatt("FMD3","SEEN",1);
233 gMC->Gsatt("FMD4","SEEN",1);
234 gMC->Gsatt("FMD5","SEEN",1);
235
236 //
237 gMC->Gdopt("hide","on");
238 gMC->Gdopt("shad","on");
239 gMC->SetClipBox(".");
240 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
241 gMC->DefaultRange();
242 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
243 gMC->Gdhead(1111,"Forward multiplicity detector");
244 gMC->Gdopt("hide","off");
245 }
246 //-------------------------------------------------------------------
247 void AliFMDv0::Init()
248 {
249 // Initialises version 0 of the Forward Multiplicity Detector
250 //
251 AliMC* gMC=AliMC::GetMC();
252 AliFMD::Init();
253 fIdSens1=gMC->VolId("GRN1");
254 fIdSens2=gMC->VolId("GRN2");
255 fIdSens3=gMC->VolId("GRN3");
256 fIdSens4=gMC->VolId("GRN4");
257 fIdSens5=gMC->VolId("GRN5");
258 if (fDebug) printf("*** FMD version 0 initialized ***\n");
259 }
260
261 //-------------------------------------------------------------------
262
263 void AliFMDv0::StepManager()
264 {
265   //
266   // Called for every step in the Forward Multiplicity Detector
267   //
268 }
269