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[u/mrichter/AliRoot.git] / FMD / AliFMDv1.cxx
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4c039060 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 **************************************************************************/
b9a2d5e4 15 /////////////////////////////////////////////////////////////////////
16// //
17// Forward Multiplicity detector based on Silicon version 0 //
18//
19//Begin Html
fe4da5cc 20/*
b9a2d5e4 21<img src="gif/AliFMDv0Class.gif">
fe4da5cc 22*/
b9a2d5e4 23//End Html
24// //
25// //
26//////////////////////////////////////////////////////////////////////
27
28#include <TMath.h>
29#include <TGeometry.h>
30#include <TTUBE.h>
31#include <TFile.h>
32#include <TTree.h>
33#include <TNode.h>
34#include <TClonesArray.h>
35#include <TLorentzVector.h>
36#include <TDirectory.h>
fe4da5cc 37#include "AliFMDv1.h"
b9a2d5e4 38#include "AliRun.h"
fe4da5cc 39#include "AliMC.h"
b9a2d5e4 40#include <iostream.h>
41#include <fstream.h>
94de3818 42#include "AliMagF.h"
b9a2d5e4 43#include "AliFMDhit.h"
44#include "AliFMDdigit.h"
f707b5c1 45#include <stdlib.h>
b9a2d5e4 46//#include "TGeant3.h"
47//class TGeant3;
fe4da5cc 48ClassImp(AliFMDv1)
b9a2d5e4 49
50//--------------------------------------------------------------------
51AliFMDv1::AliFMDv1(const char *name, const char *title):
52 AliFMD(name,title)
fe4da5cc 53{
54 //
b9a2d5e4 55 // Standart constructor for Forward Multiplicity Detector version 0
fe4da5cc 56 //
b9a2d5e4 57 fIdSens1=0;
58// setBufferSize(128000);
fe4da5cc 59}
b9a2d5e4 60//-------------------------------------------------------------------------
fe4da5cc 61void AliFMDv1::CreateGeometry()
62{
b9a2d5e4 63 //
64 // Create the geometry of Forward Multiplicity Detector version 0
fe4da5cc 65 //
b9a2d5e4 66 //Detector consists of 6 volumes:
67 // 1st covered pseudorapidity interval from 3.3 to 2.0
68 // and placed on 65cm in Z-direction;
69 // 2nd - from 2.0 to 1.6 and Z=85 cm;
70 // 3d - the same pseudorapidity interval as the 1st
71 // but on the other side from the interaction point z=-65cm;
72 // 4th - simmetricaly with the 2nd :
73 // pseudorapidity from 2.0 to 1.6, Z=-85cm
74 // 5th - from 3.6 to 4.7, Z=-270cm
75 // 6th - from 4.5 to 5.5 , Z=-630cm.
76 // Each part has 400mkm Si (sensetive area, detector itself),
77 // 0.75cm of plastic simulated electronics material,
78 // Al support ring 2cm thickness and 1cm width placed on
79 // the outer radius of each Si disk;
80 //
81 // begin Html
fe4da5cc 82 /*
b9a2d5e4 83 <img src="gif/AliFMDv0.gif">
84 */
85 //
0d630091 86
b9a2d5e4 87 Int_t *idtmed = fIdtmed->GetArray();
88
89 Int_t ifmd;
90 Int_t idrotm[999];
91 Float_t zfmd,par[3];
92 char name[5];
93
94 Float_t rin[6], rout[6],zpos;
95 Float_t etain[6]= {3.3, 2.0, 3.3, 2.0, 4.7, 5.5};
96 Float_t etaout[6]={2.0, 1.6, 2.0, 1.6, 3.6, 4.5};
97 Float_t z[6]={64., 85., -64., -85., -270., -630};
98 Float_t zDet=0.04;
99 Float_t zElectronic=0.75;
100 Float_t zSupport=1.;
101 Float_t zFMD=3.;
102//-------------------------------------------------------------------
103 // FMD
104 //------------------------------------------------------------------
105
106 AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
107
108 gMC->Gsvolu("GFSI","TUBE", idtmed[1], par, 0);
109 gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0);
110 gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0);
111
112 for (ifmd =0; ifmd < 4; ifmd++){
113
114 sprintf(name,"FMD%d",ifmd);
115 printf(name);
116
117 zfmd=TMath::Abs(z[ifmd]);
118 printf("zfmd %f z[ifmd] %f",zfmd,z[ifmd]);
119 AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]);
120 AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]);
121
122 par[0]=rin[ifmd]; // pipe size
123 par[1]=rout[ifmd];
124 par[2]=zFMD/2;
125 gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3);
126
127 printf ("rin %f rout %f ZFMD %f\n",par[0],par[1],z[ifmd]);
128 if (z[ifmd] < 0){
129 gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
130 else {
131 gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
132 //Silicon detector
133 par[2]=zDet/2;
134 zpos=zFMD/2 -par[2];
135 gMC->Gsposp("GFSI",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
136
137 //Plastic slice for electronics
138 par[2]=zElectronic/2;
139 zpos=zpos-zDet/2-par[2];
140 gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
141
142 //Simple Al support
143 par[1]=rout[ifmd];
144 par[0]=rout[ifmd]-2;
145 par[2]=zSupport/2;
146 zpos=zpos-zElectronic/2-par[2];
147 gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
148
149
150 }
151
152 //Silicon
153
154
155 gMC->Gsdvn("GSEC", "GFSI", 16, 2);
156 gMC->Gsdvn("GRIN", "GSEC", 128, 1);
157 /*
158 for (Int_t i=0; i<16; i++){
159 sprintf(ring,"GR%d",i);
160 printf(ring);
161 gMC->Gsdvn(ring, "GSEC", 128, 1);
162 }
163 */
164
165}
166//------------------------------------------------------------------------
167void AliFMDv1::CreateMaterials()
168{
169 Int_t isxfld = gAlice->Field()->Integ();
170 Float_t sxmgmx = gAlice->Field()->Max();
171
172 // Plastic CH
173 Float_t aPlastic[2]={1.01,12.01};
174 Float_t zPlastic[2]={1,6};
175 Float_t wPlastic[2]={1,1};
176 Float_t denPlastic=1.03;
177 //
178
179 //*** Definition Of avaible FMD materials ***
180 AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999);
181 AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999);
182 AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
183 AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
184
0d630091 185
b9a2d5e4 186//**
187 AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
188 AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
189 AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
190 AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
191
0d630091 192
0d630091 193
fe4da5cc 194}
b9a2d5e4 195//---------------------------------------------------------------------
196void AliFMDv1::DrawDetector()
fe4da5cc 197{
b9a2d5e4 198//
199// Draw a shaded view of the Forward multiplicity detector version 0
200//
201
202AliMC* pMC = AliMC::GetMC();
203
204//Set ALIC mother transparent
205pMC->Gsatt("ALIC","SEEN",0);
206//
207//Set volumes visible
208gMC->Gsatt("FMD0","SEEN",1);
209gMC->Gsatt("FMD1","SEEN",1);
210gMC->Gsatt("FMD2","SEEN",1);
211gMC->Gsatt("FMD3","SEEN",1);
212gMC->Gsatt("FMD4","SEEN",1);
213gMC->Gsatt("FMD5","SEEN",1);
214
215//
216gMC->Gdopt("hide","on");
217gMC->Gdopt("shad","on");
218gMC->SetClipBox(".");
219gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
220gMC->DefaultRange();
221gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
222gMC->Gdhead(1111,"Forward multiplicity detector");
223gMC->Gdopt("hide","off");
224}
225//-------------------------------------------------------------------
226void AliFMDv1::Init()
227{
228// Initialises version 0 of the Forward Multiplicity Detector
229//
230AliMC* gMC=AliMC::GetMC();
231AliFMD::Init();
232fIdSens1=gMC->VolId("GRIN");
233printf("*** FMD version 1 initialized ***\n");
fe4da5cc 234}
235
b9a2d5e4 236//-------------------------------------------------------------------
237
238void AliFMDv1::StepManager()
fe4da5cc 239{
240 //
b9a2d5e4 241 // Called for every step in the Forward Multiplicity Detector
fe4da5cc 242 //
b9a2d5e4 243 Int_t id,copy,copy1,copy2;
244 static Float_t hits[9];
245 static Int_t vol[3];
246 static Float_t de;
247 TLorentzVector pos;
248 TLorentzVector mom;
fe4da5cc 249
0d630091 250
b9a2d5e4 251 TClonesArray &lhits = *fHits;
252 AliMC* gMC=AliMC::GetMC();
253 if(!gMC->IsTrackAlive()) return; // particle has disappeared
0d630091 254
b9a2d5e4 255 Float_t charge = gMC->TrackCharge();
256 if(TMath::Abs(charge)<=0.) return; //take only charged particles
257
258 // printf(" in StepManeger \n");
259 id=gMC->CurrentVolID(copy);
fe4da5cc 260
b9a2d5e4 261// Check the sensetive volume
262 if(id==fIdSens1)
263 {
264 if(gMC->IsTrackEntering())
265 {
266 // ((TGeant3*)gMC)->Gpcxyz();
267 vol[2]=copy;
268 gMC->CurrentVolOffID(1,copy1);
269 vol[1]=copy1;
270 gMC->CurrentVolOffID(2,copy2);
271 vol[0]=copy2;
272 gMC->TrackPosition(pos);
273 hits[0]=pos[0];
274 hits[1]=pos[1];
275 hits[2]=pos[2];
276 gMC->TrackMomentum(mom);
277 hits[3]=mom[0];
278 hits[4]=mom[1];
279 hits[5]=mom[2];
280
281 Int_t iPart= gMC->TrackPid();
282 Int_t partId=gMC->IdFromPDG(iPart);
283 hits[7]=partId;
284 hits[8]=1e9*gMC->TrackTime();
285 de=0.;
286 // for(i=0; i<9; i++) printf(" hits %f \n",hits[i]);
287 }
288 if(gMC->IsTrackInside()){
289 de=de+1000.*gMC->Edep();
290 }
291
292 if(gMC->IsTrackExiting()
293 ||gMC->IsTrackDisappeared()||
294 gMC->IsTrackStop())
295 {
296 hits[6]=de+1000.*gMC->Edep();
297 new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
298 } // IsTrackExiting()
299 }
300 }
301
302
303
304
fe4da5cc 305
0d630091 306