1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 /////////////////////////////////////////////////////////////////////
20 // Forward Multiplicity detector based on Silicon version 0 //
24 <img src="gif/AliFMDv0Class.gif">
29 //////////////////////////////////////////////////////////////////////
31 #include <Riostream.h>
34 #include <TClonesArray.h>
35 #include <TDirectory.h>
37 #include <TGeometry.h>
38 #include <TLorentzVector.h>
43 #include <TVirtualMC.h>
45 #include "AliFMDdigit.h"
46 #include "AliFMDhit.h"
54 //--------------------------------------------------------------------
55 AliFMDv1::AliFMDv1(const char *name, const char *title):
59 // Standart constructor for Forward Multiplicity Detector version 0
66 // setBufferSize(128000);
68 //-------------------------------------------------------------------------
69 void AliFMDv1::CreateGeometry()
72 // Create the geometry of Forward Multiplicity Detector version 0
74 //Detector consists of 6 volumes:
75 // 1st covered pseudorapidity interval from 3.3 to 2.0
76 // and placed on 65cm in Z-direction;
77 // 2nd - from 2.0 to 1.6 and Z=85 cm;
78 // 3d - the same pseudorapidity interval as the 1st
79 // but on the other side from the interaction point z=-65cm;
80 // 4th - simmetricaly with the 2nd :
81 // pseudorapidity from 2.0 to 1.6, Z=-85cm
82 // 5th - from 3.6 to 4.7, Z=-270cm
83 // 6th - from 4.5 to 5.5 , Z=-630cm.
84 // Each part has 400mkm Si (sensetive area, detector itself),
85 // 0.75cm of plastic simulated electronics material,
86 // Al support ring 2cm thickness and 1cm width placed on
87 // the outer radius of each Si disk;
91 <img src="gif/AliFMDv0.gif">
97 Int_t *idtmed = fIdtmed->GetArray();
101 Float_t zFMD,par[3],ppcon[15];
102 Float_t z[5]={62.8, 75.2, -83.4, -75.2, -340.};
103 Float_t NylonTube[3]={0.2,0.6,0.45};
104 Float_t zPCB=0.12; Float_t zHoneyComb=0.5;
107 char nameFMD[5], nameSi[5], nameSector[5], nameRing[5];
108 Char_t nameHoney[5], nameHoneyIn[5], nameHoneyOut[5];
109 Char_t namePCB[5], nameCopper[5], nameChips[5], nameG10[5];
110 Char_t nameLPCB[5], nameLCopper[5], nameLChips[5], nameGL10[5];;
111 Float_t rin[5]={4.2,15.4,4.2,15.4,4.2};
112 Float_t rout[5]={17.4,28.4,17.4,28.4,17.4};
113 Float_t RinHoneyComb[5] ={ 5.15,16.4, 5.15,16.4, 5.15};
114 Float_t RoutHoneyComb[5]={20.63,34.92,22.3, 32.02,20.63};
116 Float_t zCooper=0.01; Float_t zChips=0.01;
117 Float_t yNylonTube[5]={10,20,10,20,10};
120 AliMatrix(idrotm[901], 90, 0, 90, 90, 180, 0);
124 gMC->Gsvolu("GNYL","TUBE", idtmed[1], NylonTube, 3); //support nylon tube
125 Float_t wideSupport=zSi+3*zPCB+2*NylonTube[2]+zHoneyComb;
126 cout<<" wideSupport "<<wideSupport<<endl;
128 for (ifmd=0; ifmd<5; ifmd++)
130 sprintf(nameFMD,"FMD%d",ifmd+1);
135 ppcon[3]=-wideSupport;
136 ppcon[4]=rin[ifmd]+0.1;
137 ppcon[5]=rout[ifmd]+0.1;
139 ppcon[6]=ppcon[3]+2*zSi+2*zPCB+2*NylonTube[2];
140 ppcon[7]=rin[ifmd]+0.1;
141 ppcon[8]=rout[ifmd]+0.1;
144 ppcon[10]=RinHoneyComb[ifmd]+0.1;
145 ppcon[11]=RoutHoneyComb[ifmd]+0.1;
147 ppcon[12]=ppcon[9]+2*zHoneyComb+zPCB;
148 ppcon[13]=RinHoneyComb[ifmd]+0.1;
149 ppcon[14]=RoutHoneyComb[ifmd]+0.1;
150 gMC->Gsvolu(nameFMD,"PCON",idtmed[0],ppcon,15);
152 zFMD=z[ifmd]+wideSupport;
153 gMC->Gspos(nameFMD,1,"ALIC",0,0,zFMD,0, "ONLY");}
155 zFMD=z[ifmd]-wideSupport;
156 gMC->Gspos(nameFMD,1,"ALIC",0,0,zFMD,idrotm[901], "ONLY");}
158 sprintf(nameSi,"GSI%d",ifmd+1);
159 sprintf(nameSector,"GSC%d",ifmd+1);
160 sprintf(nameRing,"GRN%d",ifmd+1);
163 sprintf(nameHoney,"GSU%d",ifmd+1);
164 gMC->Gsvolu(nameHoney,"TUBE", idtmed[0], par, 0); //honeycomb
165 sprintf(nameHoneyIn,"GHI%d",ifmd+1);
166 gMC->Gsvolu(nameHoneyIn,"TUBE", idtmed[7], par, 0); //honey comb inside
167 sprintf(nameHoneyOut,"GHO%d",ifmd+1);
168 gMC->Gsvolu(nameHoneyOut,"TUBE", idtmed[6], par, 0); //honey comb skin
170 sprintf(namePCB,"GPC%d",ifmd+1);
171 gMC->Gsvolu(namePCB,"TUBE", idtmed[0], par, 0); //PCB
172 sprintf(nameCopper,"GCO%d",ifmd+1);
173 gMC->Gsvolu(nameCopper,"TUBE", idtmed[3], par, 0); // Cooper
174 sprintf(nameChips,"GCH%d",ifmd+1);
175 gMC->Gsvolu(nameChips,"TUBE", idtmed[5], par, 0); // Si chips
176 sprintf(nameG10,"G10%d",ifmd+1);
177 gMC->Gsvolu(nameG10,"TUBE", idtmed[2], par, 0); //G10 plate
179 sprintf(nameLPCB,"GPL%d",ifmd+1);
180 gMC->Gsvolu(nameLPCB,"TUBE", idtmed[0], par, 0); //PCB
181 sprintf(nameLCopper,"GCL%d",ifmd+1);
182 gMC->Gsvolu(nameLCopper,"TUBE", idtmed[3], par, 0); // Cooper
183 sprintf(nameLChips,"GHL%d",ifmd+1);
184 gMC->Gsvolu(nameLChips,"TUBE", idtmed[5], par, 0); // Si chips
185 sprintf(nameGL10,"G1L%d",ifmd+1);
186 gMC->Gsvolu(nameGL10,"TUBE", idtmed[2], par, 0); // Last G10
187 par[0]=rin[ifmd]; // pipe size
190 gMC->Gsvolu(nameSi,"TUBE", idtmed[4], par, 3);
191 zInside=ppcon[3]+par[2];
192 gMC->Gspos(nameSi,ifmd+1,nameFMD,0,0,zInside,0, "ONLY");
194 zInside += par[2]+zPCB/2;
196 gMC->Gsposp(namePCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
198 gMC->Gsposp(namePCB,2,nameFMD,0,0,zInside,0, "ONLY",par,3);
199 Float_t NulonTubeBegin=zInside+2.5*zPCB;
201 Float_t zInPCB = -zPCB/2+par[2];
202 gMC->Gsposp(nameG10,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
203 zInPCB+=par[2]+zCooper/2 ;
205 gMC->Gsposp(nameCopper,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
206 zInPCB += zCooper/2 + zChips/2;
208 gMC->Gsposp(nameChips,1,namePCB,0,0,zInPCB,0, "ONLY",par,3);
211 par[0] = RinHoneyComb[ifmd];
212 par[1] = RoutHoneyComb[ifmd];
213 par[2] = zHoneyComb/2;
214 zInside += 2*NylonTube[2]+par[2];
215 gMC->Gsposp(nameHoney,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
217 Float_t zHoney=-zHoneyComb/2+par[2];
218 gMC->Gsposp(nameHoneyOut,1,nameHoney,0,0,zHoney,0,
219 "ONLY",par,3); //shkurki
220 zHoney=zHoneyComb/2-par[2];
221 gMC->Gsposp(nameHoneyOut,2,nameHoney,0,0,zHoney,0, "ONLY",par,3);
222 par[2]=(zHoneyComb-2.*0.1)/2; //soty vnutri
223 gMC->Gsposp(nameHoneyIn,1,nameHoney,0,0,0,0, "ONLY",par,3);
225 gMC->Gspos("GNYL",1,nameFMD,0,yNylonTube[ifmd],
226 NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
227 gMC->Gspos("GNYL",2,nameFMD,0,-yNylonTube[ifmd],
228 NulonTubeBegin+NylonTube[2]/2.,0, "ONLY");
231 par[0]=RoutHoneyComb[ifmd]-9;
232 par[1]=RoutHoneyComb[ifmd];
234 zInside += zHoneyComb/2+par[2];
235 gMC->Gsposp(nameLPCB,1,nameFMD,0,0,zInside,0, "ONLY",par,3);
238 zInPCB = -zPCB/2+par[2];
239 gMC->Gsposp(nameGL10,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
240 zInPCB+=par[2]+zCooper/2 ;
242 gMC->Gsposp(nameLCopper,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
243 zInPCB += zCooper/2 + zChips/2;
245 gMC->Gsposp(nameLChips,1,nameLPCB,0,0,zInPCB,0, "ONLY",par,3);
251 // fRingsSi1=3; // for drawing only
254 // fRingsSi2=3; //for drawing onl
257 gMC->Gsdvn(nameSector, nameSi , fSectorsSi2, 2);
258 gMC->Gsdvn(nameRing, nameSector, fRingsSi2, 1);
262 gMC->Gsdvn(nameSector, nameSi , fSectorsSi1, 2);
263 gMC->Gsdvn(nameRing, nameSector , fRingsSi1, 1);
270 //------------------------------------------------------------------------
271 void AliFMDv1::CreateMaterials()
273 Int_t isxfld = gAlice->Field()->Integ();
274 Float_t sxmgmx = gAlice->Field()->Max();
277 Float_t aPlastic[2]={1.01,12.01};
278 Float_t zPlastic[2]={1,6};
279 Float_t wPlastic[2]={1,1};
280 Float_t denPlastic=1.03;
282 // 60% SiO2 , 40% G10FR4
284 Float_t apcb[3] = { 28.0855,15.9994,17.749 };
285 Float_t zpcb[3] = { 14.,8.,8.875 };
286 Float_t wpcb[3] = { .28,.32,.4 };
287 Float_t denspcb = 1.8;
289 //*** Definition Of avaible FMD materials ***
290 AliMaterial(0, "FMD Air$", 14.61, 7.3, .001205, 30423.,999);
291 AliMixture(1, "Plastic$",aPlastic,zPlastic,denPlastic,-2,wPlastic);
292 AliMixture(2, "SSD PCB$", apcb, zpcb, denspcb, 3, wpcb);
293 AliMaterial(3, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
294 AliMaterial(4, "SSD Si$", 28.0855, 14., 2.33, 9.36, 999.);
295 AliMaterial(5, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
296 AliMaterial(6, "SSD C$", 12.011, 6., 2.265,18.8, 999.);
297 AliMaterial(7, "SSD Kapton$", 12.011, 6., 0.01, 31.27, 999.);//honeycomb
298 AliMaterial(8, "SSD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
302 AliMedium(0, "FMD air$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
303 AliMedium(1, "Plastic$", 1, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
304 AliMedium(2, "SSD PCB$", 2, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
305 AliMedium(3, "SSD Copper$", 3, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
306 AliMedium(4, "SSD Si$", 4, 1, isxfld, sxmgmx, 1., .001, 1., .001, .001);
307 AliMedium(5, "SSD Si chip$", 5, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
308 AliMedium(6, "SSD C$", 6, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
309 AliMedium(7, "SSD Kapton$", 7, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
310 AliMedium(8, "SSD G10FR4$", 8, 0,isxfld, sxmgmx, 10., .01, 1., .003, .003);
315 //---------------------------------------------------------------------
316 void AliFMDv1::DrawDetector()
319 // Draw a shaded view of the Forward multiplicity detector version 0
322 //Set ALIC mother transparent
323 gMC->Gsatt("ALIC","SEEN",0);
325 //Set volumes visible
326 gMC->Gsatt("FMD1","SEEN",1);
327 gMC->Gsatt("FMD2","SEEN",1);
328 gMC->Gsatt("FMD3","SEEN",1);
329 gMC->Gsatt("FMD4","SEEN",1);
330 gMC->Gsatt("FMD5","SEEN",1);
333 gMC->Gdopt("hide","on");
334 gMC->Gdopt("shad","on");
335 gMC->SetClipBox(".");
336 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
338 gMC->Gdraw("alic",40,30,0,12,9.5,.2,0.2);
339 gMC->Gdhead(1111,"Forward multiplicity detector");
340 gMC->Gdopt("hide","off");
342 //-------------------------------------------------------------------
343 void AliFMDv1::Init()
345 // Initialises version 0 of the Forward Multiplicity Detector
348 fIdSens1=gMC->VolId("GRN1");
349 fIdSens2=gMC->VolId("GRN2");
350 fIdSens3=gMC->VolId("GRN3");
351 fIdSens4=gMC->VolId("GRN4");
352 fIdSens5=gMC->VolId("GRN5");
353 printf("*** FMD version 1 initialized ***\n");
356 //-------------------------------------------------------------------
358 void AliFMDv1::StepManager()
361 // Called for every step in the Forward Multiplicity Detector
363 Int_t id,copy,copy1,copy2;
364 static Float_t hits[9];
371 TClonesArray &lhits = *fHits;
372 if(!gMC->IsTrackAlive()) return; // particle has disappeared
374 Float_t charge = gMC->TrackCharge();
375 if(TMath::Abs(charge)<=0.) return; //take only charged particles
377 // printf(" in StepManeger \n");
378 id=gMC->CurrentVolID(copy);
379 //((TGeant3*)gMC)->Gpcxyz();
381 // Check the sensetive volume
382 if(id==fIdSens1||id==fIdSens2||id==fIdSens3||id==fIdSens4||id==fIdSens5)
384 if(gMC->IsTrackEntering())
387 gMC->CurrentVolOffID(1,copy1);
389 gMC->CurrentVolOffID(2,copy2);
392 gMC->TrackPosition(pos);
397 gMC->TrackMomentum(mom);
402 Int_t iPart= gMC->TrackPid();
403 Int_t partId=gMC->IdFromPDG(iPart);
405 hits[8]=1e9*gMC->TrackTime();
408 if(gMC->IsTrackInside()){
409 de=de+1000.*gMC->Edep();
412 if(gMC->IsTrackExiting()
413 ||gMC->IsTrackDisappeared()||
416 hits[6]=de+1000.*gMC->Edep();
417 new(lhits[fNhits++]) AliFMDhit(fIshunt,gAlice->GetCurrentTrackNumber(),vol,hits);
418 } // IsTrackExiting()
421 //--------------------------------------------------------------------------
423 void AliFMDv1::Response( Float_t Edep)
425 Float_t I=1.664*0.04*2.33/22400; // = 0.69e-6;
426 Float_t chargeOnly=Edep/I;
427 //Add noise ~500electrons
430 charge=Int_t(gRandom->Gaus(chargeOnly,500));