Ion pump and bellows moved out by 15 cm to make space for forward
[u/mrichter/AliRoot.git] / FMD / AliFMDv1.cxx
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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// 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 <TFile.h>
32#include <TTree.h>
33#include <TNode.h>
34#include <TClonesArray.h>
35#include <TLorentzVector.h>
36#include <TDirectory.h>
37#include "AliFMDv1.h"
38#include "AliRun.h"
39#include "AliMC.h"
40#include <iostream.h>
41#include <fstream.h>
42#include "AliMagF.h"
43#include "AliFMDhit.h"
44#include "AliFMDdigit.h"
45#include <stdlib.h>
46//#include "TGeant3.h"
47//class TGeant3;
48ClassImp(AliFMDv1)
49
50//--------------------------------------------------------------------
51AliFMDv1::AliFMDv1(const char *name, const char *title):
52 AliFMD(name,title)
53{
54 //
55 // Standart constructor for Forward Multiplicity Detector version 0
56 //
57 fIdSens1=0;
58// setBufferSize(128000);
59}
60//-------------------------------------------------------------------------
61void AliFMDv1::CreateGeometry()
62{
63 //
64 // Create the geometry of Forward Multiplicity Detector version 0
65 //
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
82 /*
83 <img src="gif/AliFMDv0.gif">
84 */
85 //
86
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, 4.5, 5.5};
96 Float_t etaout[6]={2.0, 1.6, 2.0, 1.6, 3.3, 4.5};
97 // Float_t z[6]={64., 85., -64., -85., -270., -630};
98 Float_t z[6]={64., 85., -64., -85., -240., -630};
99 Float_t zDet=0.04;
100 Float_t zElectronic=0.75;
101 Float_t zSupport=1.;
102 Float_t zFMD=3.;
103//-------------------------------------------------------------------
104 // FMD
105 //------------------------------------------------------------------
106
107 AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
108
109 gMC->Gsvolu("GFSI","TUBE", idtmed[1], par, 0);
110 gMC->Gsvolu("GEL ","TUBE", idtmed[4], par, 0);
111 gMC->Gsvolu("GSUP","TUBE", idtmed[2], par, 0);
112
113 for (ifmd =0; ifmd < 5; ifmd++){
114
115 sprintf(name,"FMD%d",ifmd);
116 if (fDebug)
117 printf("%s: %s",ClassName(),name);
118
119 zfmd=TMath::Abs(z[ifmd]);
120 if (fDebug) printf("zfmd %f z[ifmd] %f",zfmd,z[ifmd]);
121 AliFMD::Eta2Radius(etain[ifmd],zfmd,&rin[ifmd]);
122 AliFMD::Eta2Radius(etaout[ifmd],zfmd,&rout[ifmd]);
123
124 par[0]=rin[ifmd]; // pipe size
125 par[1]=rout[ifmd];
126 par[2]=zFMD/2;
127 gMC->Gsvolu(name,"TUBE", idtmed[3], par, 3);
128
129 if (fDebug) printf ("rin %f rout %f ZFMD %f\n",par[0],par[1],z[ifmd]);
130 if (z[ifmd] < 0){
131 gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],0, "ONLY");}
132 else {
133 gMC->Gspos(name,1,"ALIC",0,0,z[ifmd],idrotm[901], "ONLY");}
134 //Silicon detector
135 par[2]=zDet/2;
136 zpos=zFMD/2 -par[2];
137 gMC->Gsposp("GFSI",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
138
139 //Plastic slice for electronics
140 par[2]=zElectronic/2;
141 zpos=zpos-zDet/2-par[2];
142 gMC->Gsposp("GEL ",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
143
144 //Simple Al support
145 par[1]=rout[ifmd];
146 par[0]=rout[ifmd]-2;
147 par[2]=zSupport/2;
148 zpos=zpos-zElectronic/2-par[2];
149 gMC->Gsposp("GSUP",ifmd+1,name,0,0,zpos,0, "ONLY",par,3);
150
151
152 }
153
154 //Silicon
155
156
157 gMC->Gsdvn("GSEC", "GFSI", 16, 2);
158 gMC->Gsdvn("GRIN", "GSEC", 128, 1);
159 /*
160 for (Int_t i=0; i<16; i++){
161 sprintf(ring,"GR%d",i);
162 printf(ring);
163 gMC->Gsdvn(ring, "GSEC", 128, 1);
164 }
165 */
166
167}
168//------------------------------------------------------------------------
169void AliFMDv1::CreateMaterials()
170{
171 Int_t isxfld = gAlice->Field()->Integ();
172 Float_t sxmgmx = gAlice->Field()->Max();
173
174 // Plastic CH
175 Float_t aPlastic[2]={1.01,12.01};
176 Float_t zPlastic[2]={1,6};
177 Float_t wPlastic[2]={1,1};
178 Float_t denPlastic=1.03;
179 //
180
181 //*** Definition Of avaible FMD materials ***
182 AliMaterial(0, "Si chip$", 28.0855,14.,2.33,9.36,999);
183 AliMaterial(1, "Al supprt$", 26.980,13.,2.70,8.9,999);
184 AliMaterial(2, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
185 AliMixture( 5, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
186
187
188//**
189 AliMedium(1, "Si chip$", 0, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
190 AliMedium(2, "Al support$", 1, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
191 AliMedium(3, "FMD air$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
192 AliMedium(4, "Plastic$", 5, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
193
194
195
196}
197//---------------------------------------------------------------------
198void AliFMDv1::DrawDetector()
199{
200//
201// Draw a shaded view of the Forward multiplicity detector version 0
202//
203
204AliMC* pMC = AliMC::GetMC();
205
206//Set ALIC mother transparent
207pMC->Gsatt("ALIC","SEEN",0);
208//
209//Set volumes visible
210gMC->Gsatt("FMD0","SEEN",1);
211gMC->Gsatt("FMD1","SEEN",1);
212gMC->Gsatt("FMD2","SEEN",1);
213gMC->Gsatt("FMD3","SEEN",1);
214gMC->Gsatt("FMD4","SEEN",1);
215gMC->Gsatt("FMD5","SEEN",1);
216
217//
218gMC->Gdopt("hide","on");
219gMC->Gdopt("shad","on");
220gMC->SetClipBox(".");
221gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
222gMC->DefaultRange();
223gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
224gMC->Gdhead(1111,"Forward multiplicity detector");
225gMC->Gdopt("hide","off");
226}
227//-------------------------------------------------------------------
228void AliFMDv1::Init()
229{
230// Initialises version 0 of the Forward Multiplicity Detector
231//
232 AliMC* gMC=AliMC::GetMC();
233 AliFMD::Init();
234 fIdSens1=gMC->VolId("GRIN");
235 if (fDebug) printf("*** FMD version 1 initialized ***\n");
236}
237
238//-------------------------------------------------------------------
239
240void AliFMDv1::StepManager()
241{
242 //
243 // Called for every step in the Forward Multiplicity Detector
244 //
245 Int_t id,copy,copy1,copy2;
246 static Float_t hits[9];
247 static Int_t vol[3];
248 static Float_t de;
249 TLorentzVector pos;
250 TLorentzVector mom;
251
252
253 TClonesArray &lhits = *fHits;
254 AliMC* gMC=AliMC::GetMC();
255 if(!gMC->IsTrackAlive()) return; // particle has disappeared
256
257 Float_t charge = gMC->TrackCharge();
258 if(TMath::Abs(charge)<=0.) return; //take only charged particles
259
260 // printf(" in StepManeger \n");
261 id=gMC->CurrentVolID(copy);
262
263// Check the sensetive volume
264 if(id==fIdSens1)
265 {
266 if(gMC->IsTrackEntering())
267 {
268 // ((TGeant3*)gMC)->Gpcxyz();
269 vol[2]=copy;
270 gMC->CurrentVolOffID(1,copy1);
271 vol[1]=copy1;
272 gMC->CurrentVolOffID(2,copy2);
273 vol[0]=copy2;
274 // printf("vol0 %d vol1 %d vol2 %d\n",vol[0],vol[1],vol[2]);
275 gMC->TrackPosition(pos);
276 hits[0]=pos[0];
277 hits[1]=pos[1];
278 hits[2]=pos[2];
279 // printf(" Zpos %f \n",hits[2]);
280 gMC->TrackMomentum(mom);
281 hits[3]=mom[0];
282 hits[4]=mom[1];
283 hits[5]=mom[2];
284
285 Int_t iPart= gMC->TrackPid();
286 Int_t partId=gMC->IdFromPDG(iPart);
287 hits[7]=partId;
288 hits[8]=1e9*gMC->TrackTime();
289 de=0.;
290 // for(i=0; i<9; i++) printf(" hits %f \n",hits[i]);
291 }
292 if(gMC->IsTrackInside()){
293 de=de+1000.*gMC->Edep();
294 }
295
296 if(gMC->IsTrackExiting()
297 ||gMC->IsTrackDisappeared()||
298 gMC->IsTrackStop())
299 {
300 hits[6]=de+1000.*gMC->Edep();
301 new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->CurrentTrack(),vol,hits);
302 } // IsTrackExiting()
303 }
304 }
305//--------------------------------------------------------------------------
306
307void AliFMDv1::Response( Float_t Edep)
308{
309 Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
310 Float_t chargeOnly=Edep/I;
311 //Add noise ~500electrons
312 Int_t charge=500;
313 if (Edep>0)
314 charge=Int_t(gRandom->Gaus(chargeOnly,500));
315 }
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