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digitization under AliSimulation fixed, all the information in chamber's local system...
[u/mrichter/AliRoot.git] / RICH / AliRICH.cxx
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53fd478b 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// **************************************************************************
4c039060 15
53fd478b 16#include "AliRICH.h"
17#include "AliRICHParam.h"
18#include "AliRICHChamber.h"
2e5f0f7b 19#include <TArrayF.h>
543d5224 20#include <TGeometry.h>
116cbefd 21#include <TBRIK.h>
543d5224 22#include <TTUBE.h>
237c933d 23#include <TFile.h>
116cbefd 24#include <TNode.h>
25#include <TObjArray.h>
3582c1f9 26#include <TParticle.h>
27#include <AliStack.h>
c60862bf 28#include <AliMagF.h>
c60862bf 29#include <AliRun.h>
30#include <AliRunDigitizer.h>
53fd478b 31#include <AliMC.h>
5d12ce38 32#include <TVirtualMC.h>
ddae0931 33
853634d3 34ClassImp(AliRICHhit)
c60862bf 35//__________________________________________________________________________________________________
36void AliRICHhit::Print(Option_t*)const
37{
3582c1f9 38 ::Info("hit","Ch=%1i, TID=%6i, eloss=%9.3f eV, in-out dist=%9.4f, OUT(%7.2f,%7.2f,%7.2f)"
39 ,fChamber,fTrack,fEloss*1e9,Length(),fOutX3.X(),fOutX3.Y(),fOutX3.Z());
c1863e3c 40}
c60862bf 41//__________________________________________________________________________________________________
853634d3 42ClassImp(AliRICHdigit)
c60862bf 43//__________________________________________________________________________________________________
44void AliRICHdigit::Print(Option_t*)const
45{
3582c1f9 46 ::Info("digit","csxy=%6i, cfm=%9i, c=%2i, x=%3i, y=%3i, q=%8.3f, TID1=%5i, TID2=%5i, TID3=%5i",
47 Id(),fCombiPid,fChamber,fPadX,fPadY,fQdc,fTracks[0],fTracks[1],fTracks[2]);
c1863e3c 48}
49//__________________________________________________________________________________________________
50ClassImp(AliRICHcluster)
51//__________________________________________________________________________________________________
52void AliRICHcluster::Print(Option_t*)const
53{
6865fb8d 54 ::Info("cluster","CombiPid=%10i, c=%2i, size=%6i, dim=%5i, x=%7.3f, y=%7.3f, Q=%6i, st=%i",
ed3ceb24 55 fCombiPid,fChamber,fSize,fDimXY,fX,fY,fQdc,fStatus);
c1863e3c 56}
c60862bf 57//__________________________________________________________________________________________________
af3d25a6 58ClassImp(AliRICHreco)
59//__________________________________________________________________________________________________
60void AliRICHreco::Print(Option_t*)const
61{
62 ::Info("reco","ThetaCherenkov=%9.6f, Nphotons=%4i, TID=%9i",fThetaCherenkov,fNphotons,fTid);
63}
64//__________________________________________________________________________________________________
c60862bf 65ClassImp(AliRICH)
66//__________________________________________________________________________________________________
15d8311d 67// RICH manager class
c60862bf 68//BEGIN_HTML
15d8311d 69/*
70 <img src="gif/alirich.gif">
71*/
c60862bf 72//END_HTML
73//__________________________________________________________________________________________________
fe4da5cc 74AliRICH::AliRICH()
c60862bf 75 :AliDetector()
53fd478b 76{
77//Default ctor should not contain any new operators
c60862bf 78 fpParam =0;
543d5224 79 fChambers =0;
80//AliDetector ctor deals with Hits and Digits
c60862bf 81 fSdigits =0; fNsdigits =0;
82 fDigitsNew =0; for(int i=0;i<kNCH;i++) fNdigitsNew[i] =0;
83 fClusters =0; for(int i=0;i<kNCH;i++) fNclusters[i]=0;
c92eb8ad 84 fRecos =0; fNrecos =0;
c60862bf 85 fCerenkovs =0; fNcerenkovs =0;
86 fSpecials =0; fNspecials =0;
543d5224 87 fCkovNumber=fFreonProd=0;
15d8311d 88}//AliRICH::AliRICH()
c021cb15 89//__________________________________________________________________________________________________
fe4da5cc 90AliRICH::AliRICH(const char *name, const char *title)
dfb4e77d 91 :AliDetector(name,title)
53fd478b 92{
93//Named ctor
dfb4e77d 94 if(GetDebug())Info("named ctor","Start.");
c60862bf 95 fpParam = new AliRICHParam;
96 fChambers = 0; CreateChambers();
543d5224 97//AliDetector ctor deals with Hits and Digits (reset them to 0, does not create them)
5d12ce38 98 fHits= 0; CreateHits(); gAlice->GetMCApp()->AddHitList(fHits);
c60862bf 99 fSdigits= 0;
100 fDigitsNew= 0;
101 fClusters= 0;
c92eb8ad 102 fRecos =0;
103
5d12ce38 104 fCerenkovs= 0; CreateCerenkovsOld(); gAlice->GetMCApp()->AddHitList(fCerenkovs);
c60862bf 105 fSpecials= 0; CreateSpecialsOld();
c60862bf 106
107 fCkovNumber=fFreonProd=0;
dfb4e77d 108 if(GetDebug())Info("named ctor","Stop.");
109}//AliRICH::AliRICH(const char *name, const char *title)
c021cb15 110//__________________________________________________________________________________________________
fe4da5cc 111AliRICH::~AliRICH()
53fd478b 112{
113//dtor
dfb4e77d 114 if(GetDebug()) Info("dtor","Start.");
237c933d 115
c60862bf 116 if(fpParam) delete fpParam;
117 if(fChambers) delete fChambers;
118
119 if(fHits) delete fHits;
120 if(fSdigits) delete fSdigits;
121 if(fDigits) delete fDigits;
122 if(fDigitsNew) {fDigitsNew->Delete(); delete fDigitsNew;}
123 if(fClusters) {fClusters->Delete(); delete fClusters;}
c92eb8ad 124 if(fRecos) delete fRecos;
c60862bf 125 if(fCerenkovs) delete fCerenkovs;
126 if(fSpecials) delete fSpecials;
dfb4e77d 127 if(GetDebug()) Info("dtor","Stop.");
128}//AliRICH::~AliRICH()
c021cb15 129//__________________________________________________________________________________________________
3ea9cb08 130void AliRICH::Hits2SDigits()
53fd478b 131{
3582c1f9 132// Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
133//
3ea9cb08 134 if(GetDebug()) Info("Hit2SDigits","Start.");
3582c1f9 135 for(Int_t iEventN=0;iEventN<GetLoader()->GetRunLoader()->GetAliRun()->GetEventsPerRun();iEventN++){//events loop
136 GetLoader()->GetRunLoader()->GetEvent(iEventN);
137
138 if(!GetLoader()->TreeH()) GetLoader()->LoadHits(); GetLoader()->GetRunLoader()->LoadHeader();
139 GetLoader()->GetRunLoader()->LoadKinematics();//from
140 if(!GetLoader()->TreeS()) GetLoader()->MakeTree("S"); MakeBranch("S");//to
141
142 for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop
143 GetLoader()->TreeH()->GetEntry(iPrimN);
144 for(Int_t iHitN=0;iHitN<Hits()->GetEntries();iHitN++){//hits loop
145 AliRICHhit *pHit=(AliRICHhit*)Hits()->At(iHitN);
146 TVector2 x2 = Param()->ShiftToWirePos(C(pHit->C())->Glob2Loc(pHit->OutX3()));
147 Int_t iTotQdc=Param()->TotQdc(x2,pHit->Eloss());
148
149 Int_t iPadXmin,iPadXmax,iPadYmin,iPadYmax;
150 Param()->Loc2Area(x2,iPadXmin,iPadYmin,iPadXmax,iPadYmax);//determine affected pads
151 if(GetDebug()) Info("Hits2SDigits","left-down=(%i,%i) right-up=(%i,%i)",iPadXmin,iPadYmin,iPadXmax,iPadYmax);
152 for(Int_t iPadY=iPadYmin;iPadY<=iPadYmax;iPadY++)//affected pads loop
153 for(Int_t iPadX=iPadXmin;iPadX<=iPadXmax;iPadX++){
154 Double_t padQdc=iTotQdc*Param()->FracQdc(x2,iPadX,iPadY);
155 if(padQdc>0.1) AddSDigit(pHit->C(),iPadX,iPadY,padQdc,
156 GetLoader()->GetRunLoader()->Stack()->Particle(pHit->GetTrack())->GetPdgCode(),pHit->GetTrack());
157 }//affected pads loop
158 }//hits loop
159 }//prims loop
160 GetLoader()->TreeS()->Fill();
161 GetLoader()->WriteSDigits("OVERWRITE");
162 }//events loop
163 GetLoader()->UnloadHits(); GetLoader()->GetRunLoader()->UnloadHeader(); GetLoader()->GetRunLoader()->UnloadKinematics();
164 GetLoader()->UnloadSDigits();
853634d3 165 if(GetDebug()) Info("Hit2SDigits","Stop.");
3582c1f9 166}//Hits2SDigits()
c021cb15 167//__________________________________________________________________________________________________
dfb4e77d 168void AliRICH::SDigits2Digits()
53fd478b 169{
170//Generate digits from sdigits.
dfb4e77d 171 if(GetDebug()) Info("SDigits2Digits","Start.");
dfb4e77d 172 if(GetDebug()) Info("SDigits2Digits","Stop.");
53fd478b 173}//SDigits2Digits()
c021cb15 174//__________________________________________________________________________________________________
dfb4e77d 175void AliRICH::BuildGeometry()
53fd478b 176{
177//Builds a TNode geometry for event display
dfb4e77d 178 if(GetDebug())Info("BuildGeometry","Start.");
237c933d 179
3ea9cb08 180 TNode *node, *subnode, *top;
181 top=gAlice->GetGeometry()->GetNode("alice");
c24372d0 182
3ea9cb08 183 new TBRIK("S_RICH","S_RICH","void",71.09999,11.5,73.15);
53d98323 184
c60862bf 185 Float_t wid=Param()->SectorSizeX();
186 Float_t len=Param()->SectorSizeY();
3ea9cb08 187 new TBRIK("PHOTO","PHOTO","void",wid/2,0.1,len/2);
188
c021cb15 189 for(int i=1;i<=kNCH;i++){
237c933d 190 top->cd();
c021cb15 191 node = new TNode(Form("RICH%i",i),Form("RICH%i",i),"S_RICH",C(i)->X(),C(i)->Y(),C(i)->Z(),C(i)->RotMatrixName());
3ea9cb08 192 node->SetLineColor(kRed);
91975aa2 193 node->cd();
c60862bf 194 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 195 subnode->SetLineColor(kGreen);
196 fNodes->Add(subnode);
c60862bf 197 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,len/2+Param()->DeadZone()/2,"");
91975aa2 198 subnode->SetLineColor(kGreen);
199 fNodes->Add(subnode);
c60862bf 200 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 201 subnode->SetLineColor(kGreen);
202 fNodes->Add(subnode);
c60862bf 203 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,-len/2-Param()->DeadZone()/2,"");
91975aa2 204 subnode->SetLineColor(kGreen);
205 fNodes->Add(subnode);
c60862bf 206 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-len/2 -Param()->DeadZone()/2,"");
91975aa2 207 subnode->SetLineColor(kGreen);
208 fNodes->Add(subnode);
c60862bf 209 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,-len/2 - Param()->DeadZone()/2,"");
91975aa2 210 subnode->SetLineColor(kGreen);
211 fNodes->Add(subnode);
237c933d 212 fNodes->Add(node);
3ea9cb08 213 }
dfb4e77d 214 if(GetDebug())Info("BuildGeometry","Stop.");
215}//void AliRICH::BuildGeometry()
c60862bf 216
dfb4e77d 217//______________________________________________________________________________
452a64c6 218void AliRICH::CreateMaterials()
219{
220 //
221 // *** DEFINITION OF AVAILABLE RICH MATERIALS ***
af3d25a6 222
223#include "Opticals.h"
224
c60862bf 225 Float_t a=0,z=0,den=0,radl=0,absl=0;
226 Float_t tmaxfd=-10.0, deemax=-0.2, stemax=-0.1,epsil=0.001, stmin=-0.001;
227 Int_t isxfld = gAlice->Field()->Integ();
228 Float_t sxmgmx = gAlice->Field()->Max();
452a64c6 229
c60862bf 230 AliMaterial( 1, "Air $",a=14.61,z=7.3, den=0.001205,radl=30420.0,absl=67500);//(Air)
231 AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
452a64c6 232
c60862bf 233 AliMaterial( 6, "HON", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //(C)-equivalent radl
234 AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
235
236 AliMaterial(16, "CSI", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //CsI-radl equivalent
237 AliMedium(kCSI, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
238
239 AliMaterial(11, "GRI", a=63.54,z=29.0,den=8.96, radl=1.43, absl=0); //anode grid (Cu)
af3d25a6 240 AliMedium(7, "GRID$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
c60862bf 241
242 AliMaterial(50, "ALUM", a=26.98,z=13.0,den=2.7, radl=8.9, absl=0); //aluminium sheet (Al)
243 AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
244
245 AliMaterial(31, "COPPER$", a=63.54,z=29.0,den=8.96, radl=1.4, absl=0); //(Cu)
246 AliMedium(12, "PCB_COPPER", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
247
248 Float_t aQuartz[2]={28.09,16.0}; Float_t zQuartz[2]={14.00, 8.0}; Float_t wmatQuartz[2]={1,2};
249 AliMixture (20, "QUA",aQuartz,zQuartz,den=2.64,-2, wmatQuartz);//Quarz (SiO2) - trasnparent
af3d25a6 250 AliMedium(3, "QUARTZ$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
c60862bf 251
252 AliMixture (21, "QUAO",aQuartz, zQuartz, den=2.64, -2, wmatQuartz);//Quarz (SiO2) - opaque
af3d25a6 253 AliMedium(8, "QUARTZO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
c60862bf 254
255 Float_t aFreon[2]={12,19}; Float_t zFreon[2]={6,9}; Float_t wmatFreon[2]={6,14};
256 AliMixture (30, "FRE",aFreon,zFreon,den=1.7,-2,wmatFreon);//Freon (C6F14)
257 AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
258
259 Float_t aMethane[2]={12.01,1}; Float_t zMethane[2]={6,1}; Float_t wmatMethane[2]={1,4};
260 AliMixture (40, "MET", aMethane, zMethane, den=7.17e-4,-2, wmatMethane);//methane (CH4)
af3d25a6 261 AliMedium(5, "METHANE$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
c60862bf 262
263 AliMixture (41, "METG", aMethane, zMethane, den=7.17e-4, -2, wmatMethane);
264 AliMedium(kGAP, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, 0.1, -deemax, epsil, -stmin);
265
266 Float_t aGlass[5]={12.01, 28.09, 16., 10.8, 23.};
267 Float_t zGlass[5]={ 6., 14., 8., 5., 11.};
268 Float_t wGlass[5]={ 0.5, 0.105, 0.355, 0.03, 0.01};
269 AliMixture (32, "GLASS",aGlass, zGlass, den=1.74, 5, wGlass);//Glass 50%C+10.5%Si+35.5%O+3% + 1%
270 AliMedium(11, "GLASS", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
271
272 Int_t *idtmed = fIdtmed->GetArray()-999;
af3d25a6 273 gMC->SetCerenkov(idtmed[1000], kNbins, aPckov, aAbsCH4, aQeAll, aIdxCH4);
274 gMC->SetCerenkov(idtmed[1001], kNbins, aPckov, aAbsCH4, aQeAll, aIdxCH4);
275 gMC->SetCerenkov(idtmed[1002], kNbins, aPckov, aAbsSiO2, aQeAll, aIdxSiO2);
276 gMC->SetCerenkov(idtmed[1003], kNbins, aPckov, aAbsC6F14, aQeAll, aIdxC6F14);
277 gMC->SetCerenkov(idtmed[1004], kNbins, aPckov, aAbsCH4, aQeAll, aIdxCH4);
278 gMC->SetCerenkov(idtmed[1005], kNbins, aPckov, aAbsCsI, aQeCsI, aIdxCH4);
279 gMC->SetCerenkov(idtmed[1006], kNbins, aPckov, aAbsGrid, aQeAll, aIdxGrid);
280 gMC->SetCerenkov(idtmed[1007], kNbins, aPckov, aAbsOpSiO2, aQeAll, aIdxOpSiO2);
281 gMC->SetCerenkov(idtmed[1008], kNbins, aPckov, aAbsCH4, aQeAll, aIdxCH4);
282 gMC->SetCerenkov(idtmed[1009], kNbins, aPckov, aAbsGrid, aQeAll, aIdxGrid);
283 gMC->SetCerenkov(idtmed[1010], kNbins, aPckov, aAbsOpSiO2, aQeAll, aIdxOpSiO2);
284
c60862bf 285}//void AliRICH::CreateMaterials()
c021cb15 286//__________________________________________________________________________________________________
53fd478b 287Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)const
452a64c6 288{
289
290 //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
291
292 Float_t en[36] = {5.0,5.1,5.2,5.3,5.4,5.5,5.6,5.7,5.8,5.9,6.0,6.1,6.2,
293 6.3,6.4,6.5,6.6,6.7,6.8,6.9,7.0,7.1,7.2,7.3,7.4,7.5,7.6,7.7,
294 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
452a64c6 295 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
296 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
297 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
298 1.72,1.53};
452a64c6 299 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
300 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
301 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
302 1.714,1.498};
303 Float_t xe=ene;
304 Int_t j=Int_t(xe*10)-49;
305 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
306 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
307
308 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
309 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
310
311 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
312 Float_t tanin=sinin/pdoti;
313
314 Float_t c1=cn*cn-ck*ck-sinin*sinin;
315 Float_t c2=4*cn*cn*ck*ck;
316 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
317 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
318
319 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
320 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
321
322
323 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
324 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
325
326 Float_t sigraf=18.;
327 Float_t lamb=1240/ene;
328 Float_t fresn;
329
330 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
331
332 if(pola)
333 {
334 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
335 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
336 }
337 else
338 fresn=0.5*(rp+rs);
339
340 fresn = fresn*rO;
341 return(fresn);
53fd478b 342}//Fresnel()
c021cb15 343//__________________________________________________________________________________________________
53fd478b 344Float_t AliRICH::AbsoCH4(Float_t x)const
345{
346//Evaluate the absorbtion lenght of CH4
cb8189e7 347 Float_t sch4[9] = {.12,.16,.23,.38,.86,2.8,7.9,28.,80.}; //MB X 10^22
cb8189e7 348 Float_t em[9] = {8.1,8.158,8.212,8.267,8.322,8.378,8.435,8.493,8.55};
3d130a45 349 const Float_t kLoschmidt=2.686763e19; // LOSCHMIDT NUMBER IN CM-3
350 const Float_t kPressure=750.,kTemperature=283.;
53fd478b 351 const Float_t kPn=kPressure/760.;
352 const Float_t kTn=kTemperature/273.16;
353 const Float_t kC0=-1.655279e-1;
354 const Float_t kC1=6.307392e-2;
355 const Float_t kC2=-8.011441e-3;
356 const Float_t kC3=3.392126e-4;
3d130a45 357
358 Float_t crossSection=0;
359 if (x<7.75)
360 crossSection=.06e-22;
361 else if(x>=7.75 && x<=8.1){ //------ METHANE CROSS SECTION cm-2 ASTROPH. J. 214, L47 (1978)
53fd478b 362 crossSection=(kC0+kC1*x+kC2*x*x+kC3*x*x*x)*1.e-18;
3d130a45 363 }else if (x> 8.1){
364 Int_t j=0;
365 while (x<=em[j] || x>=em[j+1]){
366 j++;
367 Float_t a=(sch4[j+1]-sch4[j])/(em[j+1]-em[j]);
368 crossSection=(sch4[j]+a*(x-em[j]))*1e-22;
452a64c6 369 }
3d130a45 370 }//if
452a64c6 371
53fd478b 372 Float_t density=kLoschmidt*kPn/kTn; //CH4 molecular density 1/cm-3
3d130a45 373 return 1./(density*crossSection);
cb8189e7 374}//AbsoCH4()
c021cb15 375//__________________________________________________________________________________________________
dfb4e77d 376void AliRICH::MakeBranch(Option_t* option)
53fd478b 377{
378//Create Tree branches for the RICH.
dfb4e77d 379 if(GetDebug())Info("MakeBranch","Start with option= %s.",option);
380
381 const Int_t kBufferSize = 4000;
dfb4e77d 382
dfb4e77d 383 const char *cH = strstr(option,"H");
384 const char *cD = strstr(option,"D");
385 const char *cR = strstr(option,"R");
386 const char *cS = strstr(option,"S");
387
c60862bf 388 if(cH&&TreeH()){//H
389 CreateHits(); //branch will be created in AliDetector::MakeBranch
390 CreateCerenkovsOld(); MakeBranchInTree(TreeH(),"RICHCerenkov", &fCerenkovs, kBufferSize,0);
391 CreateSpecialsOld(); MakeBranchInTree(TreeH(),"RICHSpecials", &fSpecials,kBufferSize,0);
392 }//H
dfb4e77d 393 AliDetector::MakeBranch(option);//this is after cH because we need to guarantee that fHits array is created
394
c60862bf 395 if(cS&&fLoader->TreeS()){//S
c1863e3c 396 CreateSDigits(); MakeBranchInTree(fLoader->TreeS(),"RICH",&fSdigits,kBufferSize,0) ;
c60862bf 397 }//S
dfb4e77d 398
c60862bf 399 if(cD&&fLoader->TreeD()){//D
543d5224 400 CreateDigits();
cb8189e7 401 for(Int_t i=0;i<kNCH;i++){
543d5224 402 MakeBranchInTree(fLoader->TreeD(),Form("%s%d",GetName(),i+1),&((*fDigitsNew)[i]),kBufferSize,0);
403 }
c60862bf 404 }//D
405
406 if(cR&&fLoader->TreeR()){//R
cb8189e7 407 CreateClusters();
aed240d4 408 for(Int_t i=0;i<kNCH;i++)
409 MakeBranchInTree(fLoader->TreeR(),Form("%sClusters%d",GetName(),i+1), &((*fClusters)[i]), kBufferSize, 0);
cb8189e7 410 }//R
dfb4e77d 411 if(GetDebug())Info("MakeBranch","Stop.");
c021cb15 412}//void AliRICH::MakeBranch(Option_t* option)
c60862bf 413//__________________________________________________________________________________________________
dfb4e77d 414void AliRICH::SetTreeAddress()
53fd478b 415{
416//Set branch address for the Hits and Digits Tree.
dfb4e77d 417 if(GetDebug())Info("SetTreeAddress","Start.");
c60862bf 418
dfb4e77d 419 TBranch *branch;
dfb4e77d 420
c60862bf 421 if(fLoader->TreeH()){//H
853634d3 422 if(GetDebug())Info("SetTreeAddress","tree H is requested.");
c60862bf 423 CreateHits();//branch map will be in AliDetector::SetTreeAddress
424 branch=fLoader->TreeH()->GetBranch("RICHCerenkov"); if(branch){CreateCerenkovsOld(); branch->SetAddress(&fCerenkovs);}
425 branch=fLoader->TreeH()->GetBranch("RICHSpecials"); if(branch){CreateSpecialsOld(); branch->SetAddress(&fSpecials);}
426 }//H
c021cb15 427 AliDetector::SetTreeAddress();//this is after TreeH because we need to guarantee that fHits array is created
428
c60862bf 429 if(fLoader->TreeS()){//S
853634d3 430 if(GetDebug())Info("SetTreeAddress","tree S is requested.");
c1863e3c 431 branch=fLoader->TreeS()->GetBranch(GetName()); if(branch){CreateSDigits(); branch->SetAddress(&fSdigits);}
c60862bf 432 }//S
dfb4e77d 433
c60862bf 434 if(fLoader->TreeD()){//D
853634d3 435 if(GetDebug())Info("SetTreeAddress","tree D is requested.");
c60862bf 436 for(int i=0;i<kNCH;i++){
437 branch=fLoader->TreeD()->GetBranch(Form("%s%d",GetName(),i+1));
438 if(branch){CreateDigits(); branch->SetAddress(&((*fDigitsNew)[i]));}
aed240d4 439 }
c60862bf 440 }//D
dfb4e77d 441
c60862bf 442 if(fLoader->TreeR()){//R
853634d3 443 if(GetDebug())Info("SetTreeAddress","tree R is requested.");
c60862bf 444 for(int i=0;i<kNCH;i++){
445 branch=fLoader->TreeR()->GetBranch(Form("%sClusters%d" ,GetName(),i+1));
cb8189e7 446 if(branch){CreateClusters(); branch->SetAddress(&((*fClusters)[i]));}
dfb4e77d 447 }
c60862bf 448 }//R
dfb4e77d 449 if(GetDebug())Info("SetTreeAddress","Stop.");
450}//void AliRICH::SetTreeAddress()
c021cb15 451//__________________________________________________________________________________________________
dfb4e77d 452void AliRICH::Print(Option_t *option)const
453{
53fd478b 454//Debug printout
dfb4e77d 455 TObject::Print(option);
c60862bf 456 Param()->Dump();
c021cb15 457 fChambers->Print(option);
dfb4e77d 458}//void AliRICH::Print(Option_t *option)const
c021cb15 459//__________________________________________________________________________________________________
3ea9cb08 460void AliRICH::CreateGeometry()
53fd478b 461{
462//Creates detailed geometry simulation (currently GEANT volumes tree)
3ea9cb08 463 if(GetDebug())Info("CreateGeometry","Start.");
3ea9cb08 464//Opaque quartz thickness
53fd478b 465 Float_t oquaThickness = .5;
3ea9cb08 466//CsI dimensions
c60862bf 467 Float_t pcX=Param()->PcSizeX();
468 Float_t pcY=Param()->PcSizeY();
3ea9cb08 469
470 Int_t *idtmed = fIdtmed->GetArray()-999;
471
472 Int_t i;
473 Float_t zs;
474 Int_t idrotm[1099];
475 Float_t par[3];
476
477//External aluminium box
ed3ceb24 478 par[0]=68.8;par[1]=13;par[2]=70.86; gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3);
3ea9cb08 479//Air
c60862bf 480 par[0]=66.3; par[1] = 13; par[2] = 68.35; gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3);
3ea9cb08 481//Air 2 (cutting the lower part of the box)
c60862bf 482 par[0]=1.25; par[1] = 3; par[2] = 70.86; gMC->Gsvolu("AIR2", "BOX ", idtmed[1000], par, 3);
3ea9cb08 483//Air 3 (cutting the lower part of the box)
c60862bf 484 par[0]=66.3; par[1] = 3; par[2] = 1.2505; gMC->Gsvolu("AIR3", "BOX ", idtmed[1000], par, 3);
3ea9cb08 485//Honeycomb
c60862bf 486 par[0]=66.3;par[1]=0.188; par[2] = 68.35; gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3);
3ea9cb08 487//Aluminium sheet
c60862bf 488 par[0]=66.3;par[1]=0.025;par[2]=68.35; gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3);
3ea9cb08 489 //par[0] = 66.5; par[1] = .025; par[2] = 63.1;
3ea9cb08 490//Quartz
c60862bf 491 par[0]=Param()->QuartzWidth()/2;par[1]=Param()->QuartzThickness()/2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 492 gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3);
493//Spacers (cylinders)
c60862bf 494 par[0]=0.;par[1]=.5;par[2]=Param()->FreonThickness()/2; gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3);
3ea9cb08 495//Feet (freon slabs supports)
c60862bf 496 par[0] = .7; par[1] = .3; par[2] = 1.9; gMC->Gsvolu("FOOT", "BOX", idtmed[1009], par, 3);
3ea9cb08 497//Opaque quartz
c60862bf 498 par[0]=Param()->QuartzWidth()/2;par[1]= .2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 499 gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3);
500//Frame of opaque quartz
c60862bf 501 par[0]=Param()->OuterFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->OuterFreonLength()/2;
3ea9cb08 502 gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3);
c60862bf 503 par[0]=Param()->InnerFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->InnerFreonLength()/2;
3ea9cb08 504 gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3);
505//Freon
53fd478b 506 par[0]=Param()->OuterFreonWidth()/2 - oquaThickness;
c60862bf 507 par[1]=Param()->FreonThickness()/2;
53fd478b 508 par[2]=Param()->OuterFreonLength()/2 - 2*oquaThickness;
3ea9cb08 509 gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3);
510
53fd478b 511 par[0]=Param()->InnerFreonWidth()/2 - oquaThickness;
c60862bf 512 par[1]=Param()->FreonThickness()/2;
53fd478b 513 par[2]=Param()->InnerFreonLength()/2 - 2*oquaThickness;
3ea9cb08 514 gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3);
515//Methane
c60862bf 516 par[0]=pcX/2;par[1]=Param()->GapThickness()/2;par[2]=pcY/2; gMC->Gsvolu("META","BOX ",idtmed[1004], par, 3);
3ea9cb08 517//Methane gap
3582c1f9 518 par[0]=pcX/2;par[1]=Param()->ProximityGap()/2;par[2]=pcY/2;gMC->Gsvolu("GAP ","BOX ",(*fIdtmed)[kGAP],par,3);
c60862bf 519//CsI PC
520 par[0]=pcX/2;par[1]=.25;par[2]=pcY/2; gMC->Gsvolu("CSI ", "BOX ", (*fIdtmed)[kCSI], par, 3);
3ea9cb08 521//Anode grid
c60862bf 522 par[0] = 0.;par[1] = .001;par[2] = 20.; gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3);
3ea9cb08 523
524//Wire supports
525//Bar of metal
c60862bf 526 par[0]=pcX/2;par[1]=1.05;par[2]=1.05; gMC->Gsvolu("WSMe", "BOX ", idtmed[1009], par, 3);
3ea9cb08 527//Ceramic pick up (base)
c60862bf 528 par[0]=pcX/2;par[1]= .25;par[2]=1.05; gMC->Gsvolu("WSG1", "BOX ", idtmed[1010], par, 3);
3ea9cb08 529//Ceramic pick up (head)
c60862bf 530 par[0] = pcX/2;par[1] = .1;par[2] = .1; gMC->Gsvolu("WSG2", "BOX ", idtmed[1010], par, 3);
3ea9cb08 531
532//Aluminium supports for methane and CsI
533//Short bar
c60862bf 534 par[0]=pcX/2;par[1]=Param()->GapThickness()/2 + .25; par[2] = (68.35 - pcY/2)/2;
3ea9cb08 535 gMC->Gsvolu("SMSH", "BOX", idtmed[1009], par, 3);
536//Long bar
c60862bf 537 par[0]=(66.3 - pcX/2)/2;par[1]=Param()->GapThickness()/2+.25;par[2]=pcY/2+68.35-pcY/2;
3ea9cb08 538 gMC->Gsvolu("SMLG", "BOX", idtmed[1009], par, 3);
539
540//Aluminium supports for freon
541//Short bar
c60862bf 542 par[0] = Param()->QuartzWidth()/2; par[1] = .3; par[2] = (68.35 - Param()->QuartzLength()/2)/2;
3ea9cb08 543 gMC->Gsvolu("SFSH", "BOX", idtmed[1009], par, 3);
544//Long bar
c60862bf 545 par[0] = (66.3 - Param()->QuartzWidth()/2)/2; par[1] = .3;
546 par[2] = Param()->QuartzLength()/2 + 68.35 - Param()->QuartzLength()/2;
3ea9cb08 547 gMC->Gsvolu("SFLG", "BOX", idtmed[1009], par, 3);
548//PCB backplane
c60862bf 549 par[0] = pcX/2;par[1] = .25; par[2] = pcY/4 -.5025; gMC->Gsvolu("PCB ", "BOX", idtmed[1011], par, 3);
3ea9cb08 550
551//Backplane supports
552//Aluminium slab
c60862bf 553 par[0] = 33.15;par[1] = 2;par[2] = 21.65; gMC->Gsvolu("BACK", "BOX", idtmed[1009], par, 3);
3ea9cb08 554//Big hole
c60862bf 555 par[0] = 9.05; par[1] = 2; par[2] = 4.4625; gMC->Gsvolu("BKHL", "BOX", idtmed[1000], par, 3);
3ea9cb08 556//Small hole
c60862bf 557 par[0] = 5.7;par[1] = 2;par[2] = 4.4625; gMC->Gsvolu("BKHS", "BOX", idtmed[1000], par, 3);
3ea9cb08 558//Place holes inside backplane support
559 gMC->Gspos("BKHS", 1, "BACK", .8 + 5.7,0., .6 + 4.4625, 0, "ONLY");
560 gMC->Gspos("BKHS", 2, "BACK", -.8 - 5.7,0., .6 + 4.4625, 0, "ONLY");
561 gMC->Gspos("BKHS", 3, "BACK", .8 + 5.7,0., -.6 - 4.4625, 0, "ONLY");
562 gMC->Gspos("BKHS", 4, "BACK", -.8 - 5.7,0., -.6 - 4.4625, 0, "ONLY");
563 gMC->Gspos("BKHS", 5, "BACK", .8 + 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
564 gMC->Gspos("BKHS", 6, "BACK", -.8 - 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
565 gMC->Gspos("BKHS", 7, "BACK", .8 + 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
566 gMC->Gspos("BKHS", 8, "BACK", -.8 - 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
567 gMC->Gspos("BKHL", 1, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., .6 + 4.4625, 0, "ONLY");
568 gMC->Gspos("BKHL", 2, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 4.4625, 0, "ONLY");
569 gMC->Gspos("BKHL", 3, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 4.4625, 0, "ONLY");
570 gMC->Gspos("BKHL", 4, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 4.4625, 0, "ONLY");
571 gMC->Gspos("BKHL", 5, "BACK", .8 + 11.4+ 1.6 + 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
572 gMC->Gspos("BKHL", 6, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
573 gMC->Gspos("BKHL", 7, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
574 gMC->Gspos("BKHL", 8, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
575//Place material inside RICH
576 gMC->Gspos("SRIC", 1, "RICH", 0.,0., 0., 0, "ONLY");
c60862bf 577 gMC->Gspos("AIR2", 1, "RICH", 66.3 + 1.2505, 1.276-Param()->GapThickness()/2-Param()->QuartzThickness()-Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 0., 0, "ONLY");
578 gMC->Gspos("AIR2", 2, "RICH", -66.3 - 1.2505,1.276-Param()->GapThickness()/2-Param()->QuartzThickness()-Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 0., 0, "ONLY");
579 gMC->Gspos("AIR3", 1, "RICH", 0., 1.276-Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, -68.35 - 1.25, 0, "ONLY");
580 gMC->Gspos("AIR3", 2, "RICH", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 68.35 + 1.25, 0, "ONLY");
581 gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.025, 0., 0, "ONLY");
582 gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .188, 0., 0, "ONLY");
583 gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .025, 0., 0, "ONLY");
584 gMC->Gspos("FOOT", 1, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
585 gMC->Gspos("FOOT", 2, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3 , 36.9, 0, "ONLY");
586 gMC->Gspos("FOOT", 3, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
587 gMC->Gspos("FOOT", 4, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
588 gMC->Gspos("FOOT", 5, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
589 gMC->Gspos("FOOT", 6, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
590 gMC->Gspos("FOOT", 7, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
591 gMC->Gspos("FOOT", 8, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
592 gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .2, 0., 0, "ONLY");
3ea9cb08 593// Methane supports
c60862bf 594 gMC->Gspos("SMLG", 1, "SRIC", pcX/2 + (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
595 gMC->Gspos("SMLG", 2, "SRIC", - pcX/2 - (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
596 gMC->Gspos("SMSH", 1, "SRIC", 0., 1.276 + .25, pcY/2 + (68.35 - pcY/2)/2, 0, "ONLY");
597 gMC->Gspos("SMSH", 2, "SRIC", 0., 1.276 + .25, - pcY/2 - (68.35 - pcY/2)/2, 0, "ONLY");
3ea9cb08 598//Freon supports
53fd478b 599 Float_t suppY = 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness() - .2 + .3; //y position of freon supports
600 gMC->Gspos("SFLG", 1, "SRIC", Param()->QuartzWidth()/2 + (66.3 - Param()->QuartzWidth()/2)/2, suppY, 0., 0, "ONLY");
601 gMC->Gspos("SFLG", 2, "SRIC", - Param()->QuartzWidth()/2 - (66.3 - Param()->QuartzWidth()/2)/2, suppY, 0., 0, "ONLY");
602 gMC->Gspos("SFSH", 1, "SRIC", 0., suppY, Param()->QuartzLength()/2 + (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
603 gMC->Gspos("SFSH", 2, "SRIC", 0., suppY, - Param()->QuartzLength()/2 - (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
3ea9cb08 604 AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.);
605//Place spacers
606 Int_t nspacers = 30;
607 for (i = 0; i < nspacers/3; i++) {
608 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
609 gMC->Gspos("SPAC", i, "FRE1", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
610 }
611 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
612 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
613 gMC->Gspos("SPAC", i, "FRE1", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
614 }
615 for (i = (nspacers*2)/3; i < nspacers; ++i) {
616 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
617 gMC->Gspos("SPAC", i, "FRE1", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
618 }
619 for (i = 0; i < nspacers/3; i++) {
620 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
621 gMC->Gspos("SPAC", i, "FRE2", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
622 }
623 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
624 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
625 gMC->Gspos("SPAC", i, "FRE2", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
626 }
627 for (i = (nspacers*2)/3; i < nspacers; ++i) {
628 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
629 gMC->Gspos("SPAC", i, "FRE2", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
630 }
631 gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
632 gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
c60862bf 633 gMC->Gspos("OQF1", 1, "SRIC", Param()->OuterFreonWidth()/2 + Param()->InnerFreonWidth()/2 + 2, 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings (31.3)
634 gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings
635 gMC->Gspos("OQF1", 3, "SRIC", - (Param()->OuterFreonWidth()/2 + Param()->InnerFreonWidth()/2) - 2, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings (-31.3)
636 gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness()/2, 0., 0, "ONLY");
3582c1f9 637 gMC->Gspos("GAP ", 1, "META", 0., Param()->GapThickness()/2 - Param()->ProximityGap()/2 - 0.0001, 0., 0, "ONLY");
3ea9cb08 638 gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
c60862bf 639 gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + Param()->GapThickness()/2 + .25, 0., 0, "ONLY");
3ea9cb08 640//Wire support placing
3582c1f9 641 gMC->Gspos("WSG2", 1, "GAP ", 0., Param()->ProximityGap()/2 - .1, 0., 0, "ONLY");
3ea9cb08 642 gMC->Gspos("WSG1", 1, "CSI ", 0., 0., 0., 0, "ONLY");
c60862bf 643 gMC->Gspos("WSMe", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, 0., 0, "ONLY");
3ea9cb08 644//Backplane placing
c60862bf 645 gMC->Gspos("BACK", 1, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 43.3, 0, "ONLY");
646 gMC->Gspos("BACK", 2, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2 , 43.3, 0, "ONLY");
647 gMC->Gspos("BACK", 3, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
648 gMC->Gspos("BACK", 4, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
649 gMC->Gspos("BACK", 5, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
650 gMC->Gspos("BACK", 6, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
3ea9cb08 651//PCB placing
c60862bf 652 gMC->Gspos("PCB ", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, pcX/4 + .5025 + 2.5, 0, "ONLY");
653 gMC->Gspos("PCB ", 2, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, -pcX/4 - .5025 - 2.5, 0, "ONLY");
3ea9cb08 654
655//place chambers into mother volume ALIC
c021cb15 656 for(int i=1;i<=kNCH;i++){
3ea9cb08 657 AliMatrix(idrotm[1000+i],C(i)->ThetaXd(),C(i)->PhiXd(),
658 C(i)->ThetaYd(),C(i)->PhiYd(),
659 C(i)->ThetaZd(),C(i)->PhiZd());
c021cb15 660 gMC->Gspos("RICH",i,"ALIC",C(i)->X(),C(i)->Y(),C(i)->Z(),idrotm[1000+i], "ONLY");
3ea9cb08 661 }
662
663 if(GetDebug())Info("CreateGeometry","Stop.");
664}//void AliRICH::CreateGeometry()
c60862bf 665//__________________________________________________________________________________________________
3ea9cb08 666void AliRICH::CreateChambers()
53fd478b 667{
668//create all RICH Chambers on each call. Previous chambers deleted
543d5224 669 if(fChambers) delete fChambers;
c60862bf 670 if(GetDebug())Info("CreateChambers","Creating RICH chambers.");
3ea9cb08 671 fChambers=new TObjArray(kNCH);
672 fChambers->SetOwner();
c60862bf 673 for(int i=0;i<kNCH;i++) fChambers->AddAt(new AliRICHChamber(i+1,Param()),i);
3ea9cb08 674}//void AliRICH::CreateChambers()
c021cb15 675//__________________________________________________________________________________________________
c60862bf 676void AliRICH::GenerateFeedbacks(Int_t iChamber,Float_t eloss)
53fd478b 677{
3582c1f9 678// Generate FeedBack photons
679// eloss=0 means photon so only pulse height distribution is to be analysed. This one is done in AliRICHParam::TotQdc()
680
ed3ceb24 681 TLorentzVector x4;
682 gMC->TrackPosition(x4);
3582c1f9 683 TVector2 x2=C(iChamber)->Glob2Loc(x4);
684 Int_t sector=Param()->Sector(x2);
685 Int_t iTotQdc=Param()->TotQdc(x2,eloss);
ed3ceb24 686 Int_t iNphotons=gMC->GetRandom()->Poisson(P()->AlphaFeedback(sector)*iTotQdc);
687 if(GetDebug())Info("GenerateFeedbacks","N photons=%i",iNphotons);
688 Int_t j;
689 Float_t cthf, phif, enfp = 0, sthf, e1[3], e2[3], e3[3], vmod, uswop,dir[3], phi,pol[3], mom[4];
c021cb15 690//Generate photons
3582c1f9 691 for(Int_t i=0;i<iNphotons;i++){//feedbacks loop
c021cb15 692 Double_t ranf[2];
693 gMC->GetRandom()->RndmArray(2,ranf); //Sample direction
694 cthf=ranf[0]*2-1.0;
695 if(cthf<0) continue;
696 sthf = TMath::Sqrt((1 - cthf) * (1 + cthf));
697 phif = ranf[1] * 2 * TMath::Pi();
698
699 if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57)
700 enfp = 7.5e-9;
701 else if(randomNumber<=0.7)
702 enfp = 6.4e-9;
703 else
704 enfp = 7.9e-9;
705
706
707 dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif);
708 gMC->Gdtom(dir, mom, 2);
709 mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp;
710 mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]);
711
712 // Polarisation
713 e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1];
714 e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0;
715 e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0];
716
717 vmod=0;
718 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
719 if (!vmod) for(j=0;j<3;j++) {
720 uswop=e1[j];
721 e1[j]=e3[j];
722 e3[j]=uswop;
723 }
724 vmod=0;
725 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
726 if (!vmod) for(j=0;j<3;j++) {
727 uswop=e2[j];
728 e2[j]=e3[j];
729 e3[j]=uswop;
730 }
731
ed3ceb24 732 vmod=0; for(j=0;j<3;j++) vmod+=e1[j]*e1[j]; vmod=TMath::Sqrt(1/vmod); for(j=0;j<3;j++) e1[j]*=vmod;
733 vmod=0; for(j=0;j<3;j++) vmod+=e2[j]*e2[j]; vmod=TMath::Sqrt(1/vmod); for(j=0;j<3;j++) e2[j]*=vmod;
c021cb15 734
735 phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi();
736 for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi);
737 gMC->Gdtom(pol, pol, 2);
738 Int_t outputNtracksStored;
5d12ce38 739 gAlice->GetMCApp()->PushTrack(1, //do not transport
740 gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track
c021cb15 741 kFeedback, //PID
742 mom[0],mom[1],mom[2],mom[3], //track momentum
ed3ceb24 743 x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin
c021cb15 744 pol[0],pol[1],pol[2], //polarization
ed3ceb24 745 kPFeedBackPhoton,
746 outputNtracksStored,
747 1.0);
748 }//feedbacks loop
749}//GenerateFeedbacks()
c021cb15 750//__________________________________________________________________________________________________