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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 **************************************************************************/
15
2e5f0f7b 16#include <TArrayF.h>
543d5224 17#include <TGeometry.h>
116cbefd 18#include <TBRIK.h>
543d5224 19#include <TTUBE.h>
237c933d 20#include <TFile.h>
116cbefd 21#include <TNode.h>
22#include <TObjArray.h>
c60862bf 23#include <AliMagF.h>
fe4da5cc 24#include "AliRICH.h"
c021cb15 25#include "AliRICHParam.h"
c60862bf 26#include <AliRun.h>
27#include <AliRunDigitizer.h>
5d12ce38 28#include "AliMC.h"
29#include <TVirtualMC.h>
ddae0931 30
853634d3 31ClassImp(AliRICHhit)
c60862bf 32//__________________________________________________________________________________________________
33void AliRICHhit::Print(Option_t*)const
34{
c1863e3c 35 Info("","chamber=%2i, PID=%9i, TID=%6i, eloss=%8.3f eV",fChamber,fPid,fTrack,fEloss*1e9);
36}
c60862bf 37//__________________________________________________________________________________________________
853634d3 38ClassImp(AliRICHdigit)
c60862bf 39//__________________________________________________________________________________________________
40void AliRICHdigit::Print(Option_t*)const
41{
c1863e3c 42 Info("","ID=%6i, chamber=%2i, PadX=%3i, PadY=%3i, Q=%6.2f, TID1=%5i, TID2=%5i, TID3=%5i",
c60862bf 43 Id(),fChamber,fPadX,fPadY,fQdc,fTracks[0],fTracks[1],fTracks[2]);
c1863e3c 44}
45//__________________________________________________________________________________________________
46ClassImp(AliRICHcluster)
47//__________________________________________________________________________________________________
48void AliRICHcluster::Print(Option_t*)const
49{
50 Info("","chamber=%2i,size=%3i,dim=%5i,x=%6.3f,y=%6.3f,Q=%4i,status=%i",
51 fChamber,fSize,fDimXY,fX,fY,fQdc,fStatus);
52}
c60862bf 53//__________________________________________________________________________________________________
c60862bf 54ClassImp(AliRICH)
55//__________________________________________________________________________________________________
15d8311d 56// RICH manager class
c60862bf 57//BEGIN_HTML
15d8311d 58/*
59 <img src="gif/alirich.gif">
60*/
c60862bf 61//END_HTML
62//__________________________________________________________________________________________________
fe4da5cc 63AliRICH::AliRICH()
c60862bf 64 :AliDetector()
dfb4e77d 65{//Default ctor should not contain any new operators
c60862bf 66 fpParam =0;
543d5224 67 fChambers =0;
68//AliDetector ctor deals with Hits and Digits
c60862bf 69 fSdigits =0; fNsdigits =0;
70 fDigitsNew =0; for(int i=0;i<kNCH;i++) fNdigitsNew[i] =0;
71 fClusters =0; for(int i=0;i<kNCH;i++) fNclusters[i]=0;
72
73 fCerenkovs =0; fNcerenkovs =0;
74 fSpecials =0; fNspecials =0;
75 fDchambers =0; for(int i=0;i<kNCH;i++) fNdch[i]=0;
543d5224 76 fRawClusters=0; for(int i=0;i<kNCH;i++) fNrawch[i]=0;
543d5224 77 fCkovNumber=fFreonProd=0;
15d8311d 78}//AliRICH::AliRICH()
c021cb15 79//__________________________________________________________________________________________________
fe4da5cc 80AliRICH::AliRICH(const char *name, const char *title)
dfb4e77d 81 :AliDetector(name,title)
82{//Named ctor
83 if(GetDebug())Info("named ctor","Start.");
c60862bf 84 fpParam = new AliRICHParam;
85 fChambers = 0; CreateChambers();
543d5224 86//AliDetector ctor deals with Hits and Digits (reset them to 0, does not create them)
5d12ce38 87 fHits= 0; CreateHits(); gAlice->GetMCApp()->AddHitList(fHits);
c60862bf 88 fSdigits= 0;
89 fDigitsNew= 0;
90 fClusters= 0;
91
5d12ce38 92 fCerenkovs= 0; CreateCerenkovsOld(); gAlice->GetMCApp()->AddHitList(fCerenkovs);
c60862bf 93 fSpecials= 0; CreateSpecialsOld();
c1863e3c 94 fDchambers= 0;
95 fRawClusters=0;
c60862bf 96
97 fCkovNumber=fFreonProd=0;
dfb4e77d 98 if(GetDebug())Info("named ctor","Stop.");
99}//AliRICH::AliRICH(const char *name, const char *title)
c021cb15 100//__________________________________________________________________________________________________
fe4da5cc 101AliRICH::~AliRICH()
dfb4e77d 102{//dtor
103 if(GetDebug()) Info("dtor","Start.");
237c933d 104
c60862bf 105 if(fpParam) delete fpParam;
106 if(fChambers) delete fChambers;
107
108 if(fHits) delete fHits;
109 if(fSdigits) delete fSdigits;
110 if(fDigits) delete fDigits;
111 if(fDigitsNew) {fDigitsNew->Delete(); delete fDigitsNew;}
112 if(fClusters) {fClusters->Delete(); delete fClusters;}
113
114 if(fCerenkovs) delete fCerenkovs;
115 if(fSpecials) delete fSpecials;
116 if(fDchambers) {fDchambers->Delete(); delete fDchambers;}
117 if(fRawClusters) {fRawClusters->Delete(); delete fRawClusters;}
dfb4e77d 118 if(GetDebug()) Info("dtor","Stop.");
119}//AliRICH::~AliRICH()
c021cb15 120//__________________________________________________________________________________________________
3ea9cb08 121void AliRICH::Hits2SDigits()
c60862bf 122{//Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
3ea9cb08 123 if(GetDebug()) Info("Hit2SDigits","Start.");
543d5224 124 GetLoader()->LoadHits();
853634d3 125
543d5224 126 for(Int_t iEventN=0;iEventN<gAlice->GetEventsPerRun();iEventN++){//events loop
127 gAlice->GetRunLoader()->GetEvent(iEventN);
128
def88ef1 129 if(!GetLoader()->TreeS()) GetLoader()->MakeTree("S");
130 MakeBranch("S");
131
c1863e3c 132 ResetHits(); ResetSDigits();
543d5224 133 for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop
134 GetLoader()->TreeH()->GetEntry(iPrimN);
c1863e3c 135 for(Int_t iHitN=0;iHitN<Hits()->GetEntries();iHitN++){//hits loop
136 AliRICHhit *pHit=(AliRICHhit*)Hits()->At(iHitN);
137
138 TVector3 globX3(pHit->X(),pHit->Y(),pHit->Z());
139 TVector3 locX3=C(pHit->C())->Glob2Loc(globX3);
140
141 Int_t sector;
142 Int_t iTotQdc=Param()->Loc2TotQdc(locX3,pHit->Eloss(),pHit->Pid(),sector);
143
144 Int_t iPadXmin,iPadXmax,iPadYmin,iPadYmax;
145 AliRICHParam::Loc2Area(locX3,iPadXmin,iPadYmin,iPadXmax,iPadYmax);
146 for(Int_t iPadY=iPadYmin;iPadY<=iPadYmax;iPadY++)
147 for(Int_t iPadX=iPadXmin;iPadX<=iPadXmax;iPadX++){
148 Double_t padQdc=iTotQdc*Param()->Loc2PadFrac(locX3,iPadX,iPadY);
149 if(padQdc>0.1) AddSDigit(pHit->C(),iPadX,iPadY,padQdc,pHit->GetTrack());
150 }
543d5224 151 }//specials loop
152 }//prims loop
153 GetLoader()->TreeS()->Fill();
154 GetLoader()->WriteSDigits("OVERWRITE");
155 if(GetDebug()) Info("Hit2SDigits","Event %i processed.",iEventN);
156 }//events loop
157 GetLoader()->UnloadHits(); GetLoader()->UnloadSDigits();
c1863e3c 158 ResetHits(); ResetSDigits();
853634d3 159 if(GetDebug()) Info("Hit2SDigits","Stop.");
c021cb15 160}//void AliRICH::Hits2SDigits()
161//__________________________________________________________________________________________________
dfb4e77d 162void AliRICH::SDigits2Digits()
163{//Generate digits from sdigits.
164 if(GetDebug()) Info("SDigits2Digits","Start.");
543d5224 165
166 GetLoader()->LoadSDigits();
167
168 for(Int_t iEventN=0;iEventN<gAlice->GetEventsPerRun();iEventN++){//events loop
169 gAlice->GetRunLoader()->GetEvent(iEventN);
c021cb15 170
def88ef1 171 if(!GetLoader()->TreeD()) GetLoader()->MakeTree("D"); MakeBranch("D"); //create TreeD with RICH branches
c1863e3c 172 ResetSDigits();ResetDigitsOld();//reset lists of sdigits and digits
543d5224 173 GetLoader()->TreeS()->GetEntry(0);
c1863e3c 174 SDigits()->Sort();
543d5224 175
c1863e3c 176 Int_t chamber,x,y,tr[3],id;
177 chamber=x=y=tr[0]=tr[1]=tr[2]=id=kBad;
178 Double_t q=kBad;
179 Int_t iNdigitsPerPad=kBad;//how many sdigits for a given pad
543d5224 180
c1863e3c 181 for(Int_t i=0;i<SDigits()->GetEntries();i++){//sdigits loop (sorted)
182 AliRICHdigit *pSdig=(AliRICHdigit*)SDigits()->At(i);
543d5224 183 if(pSdig->Id()==id){//still the same pad
184 iNdigitsPerPad++;
c1863e3c 185 q+=pSdig->Q();
543d5224 186 if(iNdigitsPerPad<=3)
187 tr[iNdigitsPerPad-1]=pSdig->T(0);
188 else
189 Info("","More then 3 sdigits for the given pad");
190 }else{//new pad, add the pevious one
c1863e3c 191 if(id!=kBad) AddDigit(chamber,x,y,(Int_t)q,tr[0],tr[1],tr[2]);//ch-xpad-ypad-qdc-tr1-2-3
192 chamber=pSdig->C();x=pSdig->X();y=pSdig->Y();q=pSdig->Q();tr[0]=pSdig->T(0);id=pSdig->Id();
543d5224 193 iNdigitsPerPad=1;tr[1]=tr[2]=kBad;
194 }
195 }//sdigits loop (sorted)
c1863e3c 196
197 if(SDigits()->GetEntries())AddDigit(chamber,x,y,(Int_t)q,tr[0],tr[1],tr[2]);//add the last digit
198
543d5224 199
200 GetLoader()->TreeD()->Fill();
201 GetLoader()->WriteDigits("OVERWRITE");
202 if(GetDebug()) Info("SDigits2Digits","Event %i processed.",iEventN);
203 }//events loop
204 GetLoader()->UnloadSDigits(); GetLoader()->UnloadDigits();
c1863e3c 205 ResetSDigits(); ResetDigitsOld();
dfb4e77d 206 if(GetDebug()) Info("SDigits2Digits","Stop.");
207}//void AliRICH::SDigits2Digits()
c021cb15 208//__________________________________________________________________________________________________
34ead2dd 209void AliRICH::Digits2Reco()
c60862bf 210{//Generate clusters from digits then generate recos from clusters or digits
211 if(GetDebug()) Info("Digits2reco","Start.");
34ead2dd 212
dfb4e77d 213}//void AliRICH::Digits2Reco()
c021cb15 214//__________________________________________________________________________________________________
dfb4e77d 215void AliRICH::BuildGeometry()
3ea9cb08 216{//Builds a TNode geometry for event display
dfb4e77d 217 if(GetDebug())Info("BuildGeometry","Start.");
237c933d 218
3ea9cb08 219 TNode *node, *subnode, *top;
220 top=gAlice->GetGeometry()->GetNode("alice");
c24372d0 221
3ea9cb08 222 new TBRIK("S_RICH","S_RICH","void",71.09999,11.5,73.15);
53d98323 223
c60862bf 224 Float_t wid=Param()->SectorSizeX();
225 Float_t len=Param()->SectorSizeY();
3ea9cb08 226 new TBRIK("PHOTO","PHOTO","void",wid/2,0.1,len/2);
227
c021cb15 228 for(int i=1;i<=kNCH;i++){
237c933d 229 top->cd();
c021cb15 230 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 231 node->SetLineColor(kRed);
91975aa2 232 node->cd();
c60862bf 233 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 234 subnode->SetLineColor(kGreen);
235 fNodes->Add(subnode);
c60862bf 236 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,len/2+Param()->DeadZone()/2,"");
91975aa2 237 subnode->SetLineColor(kGreen);
238 fNodes->Add(subnode);
c60862bf 239 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 240 subnode->SetLineColor(kGreen);
241 fNodes->Add(subnode);
c60862bf 242 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,-len/2-Param()->DeadZone()/2,"");
91975aa2 243 subnode->SetLineColor(kGreen);
244 fNodes->Add(subnode);
c60862bf 245 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-len/2 -Param()->DeadZone()/2,"");
91975aa2 246 subnode->SetLineColor(kGreen);
247 fNodes->Add(subnode);
c60862bf 248 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,-len/2 - Param()->DeadZone()/2,"");
91975aa2 249 subnode->SetLineColor(kGreen);
250 fNodes->Add(subnode);
237c933d 251 fNodes->Add(node);
3ea9cb08 252 }
dfb4e77d 253 if(GetDebug())Info("BuildGeometry","Stop.");
254}//void AliRICH::BuildGeometry()
c60862bf 255
256static Int_t kCSI=6;
257static Int_t kGAP=9;
dfb4e77d 258//______________________________________________________________________________
452a64c6 259void AliRICH::CreateMaterials()
260{
261 //
262 // *** DEFINITION OF AVAILABLE RICH MATERIALS ***
263 // ORIGIN : NICK VAN EIJNDHOVEN
264 // Modified by: N. Colonna (INFN - BARI, Nicola.Colonna@ba.infn.it)
265 // R.A. Fini (INFN - BARI, Rosanna.Fini@ba.infn.it)
266 // R.A. Loconsole (Bari University, loco@riscom.ba.infn.it)
267 //
452a64c6 268 Int_t i;
452a64c6 269
452a64c6 270 //Photons energy intervals
271 Float_t ppckov[26];
272 for (i=0;i<26;i++)
273 {
274 ppckov[i] = (Float_t(i)*0.1+5.5)*1e-9;
452a64c6 275 }
276
277
278 //Refraction index for quarz
279 Float_t rIndexQuarz[26];
280 Float_t e1= 10.666;
281 Float_t e2= 18.125;
282 Float_t f1= 46.411;
283 Float_t f2= 228.71;
284 for (i=0;i<26;i++)
285 {
286 Float_t ene=ppckov[i]*1e9;
287 Float_t a=f1/(e1*e1 - ene*ene);
288 Float_t b=f2/(e2*e2 - ene*ene);
289 rIndexQuarz[i] = TMath::Sqrt(1. + a + b );
452a64c6 290 }
291
292 //Refraction index for opaque quarz, methane and grid
293 Float_t rIndexOpaqueQuarz[26];
294 Float_t rIndexMethane[26];
295 Float_t rIndexGrid[26];
296 for (i=0;i<26;i++)
297 {
298 rIndexOpaqueQuarz[i]=1;
299 rIndexMethane[i]=1.000444;
300 rIndexGrid[i]=1;
452a64c6 301 }
302
303 //Absorption index for freon
304 Float_t abscoFreon[26] = {179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987,
305 179.0987, 142.9206, 56.64957, 25.58622, 13.95293, 12.03905, 10.42953, 8.804196,
306 7.069031, 4.461292, 2.028366, 1.293013, .577267, .40746, .334964, 0., 0., 0.};
307
452a64c6 308
309 Float_t abscoQuarz [26] = {105.8, 65.52, 48.58, 42.85, 35.79, 31.262, 28.598, 27.527, 25.007, 22.815, 21.004,
310 19.266, 17.525, 15.878, 14.177, 11.719, 9.282, 6.62, 4.0925, 2.601, 1.149, .667, .3627,
311 .192, .1497, .10857};
312
313 //Absorption index for methane
314 Float_t abscoMethane[26];
315 for (i=0;i<26;i++)
316 {
317 abscoMethane[i]=AbsoCH4(ppckov[i]*1e9);
452a64c6 318 }
319
320 //Absorption index for opaque quarz, csi and grid, efficiency for all and grid
321 Float_t abscoOpaqueQuarz[26];
322 Float_t abscoCsI[26];
323 Float_t abscoGrid[26];
324 Float_t efficAll[26];
325 Float_t efficGrid[26];
326 for (i=0;i<26;i++)
327 {
328 abscoOpaqueQuarz[i]=1e-5;
329 abscoCsI[i]=1e-4;
330 abscoGrid[i]=1e-4;
331 efficAll[i]=1;
332 efficGrid[i]=1;
452a64c6 333 }
334
335 //Efficiency for csi
336
337 Float_t efficCsI[26] = {0.000199999995, 0.000600000028, 0.000699999975, 0.00499999989, 0.00749999983, 0.010125,
338 0.0242999997, 0.0405000001, 0.0688500032, 0.105299994, 0.121500008, 0.141749993, 0.157949999,
339 0.162, 0.166050002, 0.167669997, 0.174299985, 0.176789999, 0.179279998, 0.182599992, 0.18592,
340 0.187579989, 0.189239994, 0.190899998, 0.207499996, 0.215799987};
341
342
343
344 //FRESNEL LOSS CORRECTION FOR PERPENDICULAR INCIDENCE AND
345 //UNPOLARIZED PHOTONS
346
347 for (i=0;i<26;i++)
348 {
349 efficCsI[i] = efficCsI[i]/(1.-Fresnel(ppckov[i]*1e9,1.,0));
452a64c6 350 }
351
352 /*******************************************End of rich_media.f***************************************/
452a64c6 353
c60862bf 354 Float_t rIndexFreon[26];
452a64c6 355
452a64c6 356
452a64c6 357 // --- Photon energy (GeV)
358 // --- Refraction indexes
359 for (i = 0; i < 26; ++i) {
360 rIndexFreon[i] = ppckov[i] * .0172 * 1e9 + 1.177;
361 //rIndexFreon[i] = 1;
452a64c6 362 }
363
c60862bf 364
365 Float_t a=0,z=0,den=0,radl=0,absl=0;
366 Float_t tmaxfd=-10.0, deemax=-0.2, stemax=-0.1,epsil=0.001, stmin=-0.001;
367 Int_t isxfld = gAlice->Field()->Integ();
368 Float_t sxmgmx = gAlice->Field()->Max();
452a64c6 369
c60862bf 370 AliMaterial( 1, "Air $",a=14.61,z=7.3, den=0.001205,radl=30420.0,absl=67500);//(Air)
371 AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
452a64c6 372
c60862bf 373 AliMaterial( 6, "HON", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //(C)-equivalent radl
374 AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
375
376 AliMaterial(16, "CSI", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //CsI-radl equivalent
377 AliMedium(kCSI, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
378
379 AliMaterial(11, "GRI", a=63.54,z=29.0,den=8.96, radl=1.43, absl=0); //anode grid (Cu)
380 AliMedium(7, "GRIGLIA$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
381
382 AliMaterial(50, "ALUM", a=26.98,z=13.0,den=2.7, radl=8.9, absl=0); //aluminium sheet (Al)
383 AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
384
385 AliMaterial(31, "COPPER$", a=63.54,z=29.0,den=8.96, radl=1.4, absl=0); //(Cu)
386 AliMedium(12, "PCB_COPPER", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
387
388 Float_t aQuartz[2]={28.09,16.0}; Float_t zQuartz[2]={14.00, 8.0}; Float_t wmatQuartz[2]={1,2};
389 AliMixture (20, "QUA",aQuartz,zQuartz,den=2.64,-2, wmatQuartz);//Quarz (SiO2) - trasnparent
390 AliMedium(3, "QUARZO$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
391
392 AliMixture (21, "QUAO",aQuartz, zQuartz, den=2.64, -2, wmatQuartz);//Quarz (SiO2) - opaque
393 AliMedium(8, "QUARZOO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
394
395 Float_t aFreon[2]={12,19}; Float_t zFreon[2]={6,9}; Float_t wmatFreon[2]={6,14};
396 AliMixture (30, "FRE",aFreon,zFreon,den=1.7,-2,wmatFreon);//Freon (C6F14)
397 AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
398
399 Float_t aMethane[2]={12.01,1}; Float_t zMethane[2]={6,1}; Float_t wmatMethane[2]={1,4};
400 AliMixture (40, "MET", aMethane, zMethane, den=7.17e-4,-2, wmatMethane);//methane (CH4)
401 AliMedium(5, "METANO$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
402
403 AliMixture (41, "METG", aMethane, zMethane, den=7.17e-4, -2, wmatMethane);
404 AliMedium(kGAP, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, 0.1, -deemax, epsil, -stmin);
405
406 Float_t aGlass[5]={12.01, 28.09, 16., 10.8, 23.};
407 Float_t zGlass[5]={ 6., 14., 8., 5., 11.};
408 Float_t wGlass[5]={ 0.5, 0.105, 0.355, 0.03, 0.01};
409 AliMixture (32, "GLASS",aGlass, zGlass, den=1.74, 5, wGlass);//Glass 50%C+10.5%Si+35.5%O+3% + 1%
410 AliMedium(11, "GLASS", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
411
412 Int_t *idtmed = fIdtmed->GetArray()-999;
413 gMC->SetCerenkov(idtmed[1000], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
414 gMC->SetCerenkov(idtmed[1001], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
415 gMC->SetCerenkov(idtmed[1002], 26, ppckov, abscoQuarz, efficAll, rIndexQuarz);
416 gMC->SetCerenkov(idtmed[1003], 26, ppckov, abscoFreon, efficAll, rIndexFreon);
417 gMC->SetCerenkov(idtmed[1004], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
418 gMC->SetCerenkov(idtmed[1005], 26, ppckov, abscoCsI, efficCsI, rIndexMethane);
419 gMC->SetCerenkov(idtmed[1006], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
420 gMC->SetCerenkov(idtmed[1007], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
421 gMC->SetCerenkov(idtmed[1008], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
422 gMC->SetCerenkov(idtmed[1009], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
423 gMC->SetCerenkov(idtmed[1010], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
424}//void AliRICH::CreateMaterials()
c021cb15 425//__________________________________________________________________________________________________
452a64c6 426Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
427{
428
429 //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
430
431 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,
432 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,
433 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
452a64c6 434 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
435 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
436 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
437 1.72,1.53};
452a64c6 438 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
439 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
440 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
441 1.714,1.498};
442 Float_t xe=ene;
443 Int_t j=Int_t(xe*10)-49;
444 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
445 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
446
447 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
448 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
449
450 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
451 Float_t tanin=sinin/pdoti;
452
453 Float_t c1=cn*cn-ck*ck-sinin*sinin;
454 Float_t c2=4*cn*cn*ck*ck;
455 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
456 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
457
458 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
459 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
460
461
462 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
463 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
464
465 Float_t sigraf=18.;
466 Float_t lamb=1240/ene;
467 Float_t fresn;
468
469 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
470
471 if(pola)
472 {
473 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
474 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
475 }
476 else
477 fresn=0.5*(rp+rs);
478
479 fresn = fresn*rO;
480 return(fresn);
c021cb15 481}//Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
482//__________________________________________________________________________________________________
452a64c6 483Float_t AliRICH::AbsoCH4(Float_t x)
484{
485
486 //KLOSCH,SCH4(9),WL(9),EM(9),ALENGTH(31)
487 Float_t sch4[9] = {.12,.16,.23,.38,.86,2.8,7.9,28.,80.}; //MB X 10^22
488 //Float_t wl[9] = {153.,152.,151.,150.,149.,148.,147.,146.,145};
489 Float_t em[9] = {8.1,8.158,8.212,8.267,8.322,8.378,8.435,8.493,8.55};
490 const Float_t kLosch=2.686763E19; // LOSCHMIDT NUMBER IN CM-3
491 const Float_t kIgas1=100, kIgas2=0, kOxy=10., kWater=5., kPressure=750.,kTemperature=283.;
492 Float_t pn=kPressure/760.;
493 Float_t tn=kTemperature/273.16;
494
495
496// ------- METHANE CROSS SECTION -----------------
497// ASTROPH. J. 214, L47 (1978)
498
499 Float_t sm=0;
500 if (x<7.75)
501 sm=.06e-22;
502
503 if(x>=7.75 && x<=8.1)
504 {
505 Float_t c0=-1.655279e-1;
506 Float_t c1=6.307392e-2;
507 Float_t c2=-8.011441e-3;
508 Float_t c3=3.392126e-4;
509 sm=(c0+c1*x+c2*x*x+c3*x*x*x)*1.e-18;
510 }
511
512 if (x> 8.1)
513 {
514 Int_t j=0;
515 while (x<=em[j] && x>=em[j+1])
516 {
517 j++;
518 Float_t a=(sch4[j+1]-sch4[j])/(em[j+1]-em[j]);
519 sm=(sch4[j]+a*(x-em[j]))*1e-22;
520 }
521 }
522
523 Float_t dm=(kIgas1/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
524 Float_t abslm=1./sm/dm;
525
526// ------- ISOBUTHANE CROSS SECTION --------------
527// i-C4H10 (ai) abs. length from curves in
528// Lu-McDonald paper for BARI RICH workshop .
529// -----------------------------------------------------------
530
531 Float_t ai;
532 Float_t absli;
533 if (kIgas2 != 0)
534 {
535 if (x<7.25)
536 ai=100000000.;
537
538 if(x>=7.25 && x<7.375)
539 ai=24.3;
540
541 if(x>=7.375)
542 ai=.0000000001;
543
544 Float_t si = 1./(ai*kLosch*273.16/293.); // ISOB. CRO.SEC.IN CM2
545 Float_t di=(kIgas2/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
546 absli =1./si/di;
547 }
548 else
549 absli=1.e18;
550// ---------------------------------------------------------
551//
552// transmission of O2
553//
554// y= path in cm, x=energy in eV
555// so= cross section for UV absorption in cm2
556// do= O2 molecular density in cm-3
557// ---------------------------------------------------------
558
559 Float_t abslo;
560 Float_t so=0;
561 if(x>=6.0)
562 {
563 if(x>=6.0 && x<6.5)
564 {
565 so=3.392709e-13 * TMath::Exp(2.864104 *x);
566 so=so*1e-18;
567 }
568
569 if(x>=6.5 && x<7.0)
570 {
571 so=2.910039e-34 * TMath::Exp(10.3337*x);
572 so=so*1e-18;
573 }
574
575
576 if (x>=7.0)
577 {
578 Float_t a0=-73770.76;
579 Float_t a1=46190.69;
580 Float_t a2=-11475.44;
581 Float_t a3=1412.611;
582 Float_t a4=-86.07027;
583 Float_t a5=2.074234;
584 so= a0+(a1*x)+(a2*x*x)+(a3*x*x*x)+(a4*x*x*x*x)+(a5*x*x*x*x*x);
585 so=so*1e-18;
586 }
587
588 Float_t dox=(kOxy/1e6)*kLosch*pn/tn;
589 abslo=1./so/dox;
590 }
591 else
592 abslo=1.e18;
593// ---------------------------------------------------------
594//
595// transmission of H2O
596//
597// y= path in cm, x=energy in eV
598// sw= cross section for UV absorption in cm2
599// dw= H2O molecular density in cm-3
600// ---------------------------------------------------------
601
602 Float_t abslw;
603
dfb4e77d 604 Float_t b0=29231.65;
605 Float_t b1=-15807.74;
606 Float_t b2=3192.926;
607 Float_t b3=-285.4809;
608 Float_t b4=9.533944;
452a64c6 609
dfb4e77d 610 if(x>6.75)
611 {
612 Float_t sw= b0+(b1*x)+(b2*x*x)+(b3*x*x*x)+(b4*x*x*x*x);
613 sw=sw*1e-18;
614 Float_t dw=(kWater/1e6)*kLosch*pn/tn;
615 abslw=1./sw/dw;
616 }
617 else
618 abslw=1.e18;
619
620// ---------------------------------------------------------
452a64c6 621
dfb4e77d 622 Float_t alength=1./(1./abslm+1./absli+1./abslo+1./abslw);
623 return (alength);
624}
c021cb15 625//__________________________________________________________________________________________________
dfb4e77d 626void AliRICH::MakeBranch(Option_t* option)
627{//Create Tree branches for the RICH.
628 if(GetDebug())Info("MakeBranch","Start with option= %s.",option);
629
630 const Int_t kBufferSize = 4000;
dfb4e77d 631
dfb4e77d 632 const char *cH = strstr(option,"H");
633 const char *cD = strstr(option,"D");
634 const char *cR = strstr(option,"R");
635 const char *cS = strstr(option,"S");
636
c60862bf 637 if(cH&&TreeH()){//H
638 CreateHits(); //branch will be created in AliDetector::MakeBranch
639 CreateCerenkovsOld(); MakeBranchInTree(TreeH(),"RICHCerenkov", &fCerenkovs, kBufferSize,0);
640 CreateSpecialsOld(); MakeBranchInTree(TreeH(),"RICHSpecials", &fSpecials,kBufferSize,0);
641 }//H
dfb4e77d 642 AliDetector::MakeBranch(option);//this is after cH because we need to guarantee that fHits array is created
643
c60862bf 644 if(cS&&fLoader->TreeS()){//S
c1863e3c 645 CreateSDigits(); MakeBranchInTree(fLoader->TreeS(),"RICH",&fSdigits,kBufferSize,0) ;
c60862bf 646 }//S
dfb4e77d 647
c60862bf 648 if(cD&&fLoader->TreeD()){//D
543d5224 649 CreateDigits();
c60862bf 650 CreateDigitsOld();
543d5224 651 for(int i=0;i<kNCH;i++){
c60862bf 652 MakeBranchInTree(fLoader->TreeD(),Form("%sDigits%d",GetName(),i+1),&((*fDchambers)[i]),kBufferSize,0);
543d5224 653 MakeBranchInTree(fLoader->TreeD(),Form("%s%d",GetName(),i+1),&((*fDigitsNew)[i]),kBufferSize,0);
654 }
c60862bf 655 }//D
656
657 if(cR&&fLoader->TreeR()){//R
658 CreateRawClustersOld();
659 for(int i=0; i<kNCH ;i++)
660 MakeBranchInTree(fLoader->TreeR(),Form("%sRawClusters%d",GetName(),i+1), &((*fRawClusters)[i]), kBufferSize, 0);
c60862bf 661 }//R
dfb4e77d 662 if(GetDebug())Info("MakeBranch","Stop.");
c021cb15 663}//void AliRICH::MakeBranch(Option_t* option)
c60862bf 664//__________________________________________________________________________________________________
dfb4e77d 665void AliRICH::SetTreeAddress()
666{//Set branch address for the Hits and Digits Tree.
667 if(GetDebug())Info("SetTreeAddress","Start.");
c60862bf 668
dfb4e77d 669 TBranch *branch;
dfb4e77d 670
c60862bf 671 if(fLoader->TreeH()){//H
853634d3 672 if(GetDebug())Info("SetTreeAddress","tree H is requested.");
c60862bf 673 CreateHits();//branch map will be in AliDetector::SetTreeAddress
674 branch=fLoader->TreeH()->GetBranch("RICHCerenkov"); if(branch){CreateCerenkovsOld(); branch->SetAddress(&fCerenkovs);}
675 branch=fLoader->TreeH()->GetBranch("RICHSpecials"); if(branch){CreateSpecialsOld(); branch->SetAddress(&fSpecials);}
676 }//H
c021cb15 677 AliDetector::SetTreeAddress();//this is after TreeH because we need to guarantee that fHits array is created
678
c60862bf 679 if(fLoader->TreeS()){//S
853634d3 680 if(GetDebug())Info("SetTreeAddress","tree S is requested.");
c1863e3c 681 branch=fLoader->TreeS()->GetBranch(GetName()); if(branch){CreateSDigits(); branch->SetAddress(&fSdigits);}
c60862bf 682 }//S
dfb4e77d 683
c60862bf 684 if(fLoader->TreeD()){//D
853634d3 685 if(GetDebug())Info("SetTreeAddress","tree D is requested.");
c60862bf 686 for(int i=0;i<kNCH;i++){
687 branch=fLoader->TreeD()->GetBranch(Form("%s%d",GetName(),i+1));
688 if(branch){CreateDigits(); branch->SetAddress(&((*fDigitsNew)[i]));}
dfb4e77d 689
c60862bf 690 branch=fLoader->TreeD()->GetBranch(Form("%sDigits%d",GetName(),i+1));
691 if(branch){CreateDigitsOld(); branch->SetAddress(&((*fDchambers)[i]));}
692 }//for
693 }//D
dfb4e77d 694
c60862bf 695 if(fLoader->TreeR()){//R
853634d3 696 if(GetDebug())Info("SetTreeAddress","tree R is requested.");
697
c60862bf 698 for(int i=0;i<kNCH;i++){
699 branch=fLoader->TreeR()->GetBranch(Form("%sClusters%d" ,GetName(),i+1));
700 if(branch){CreateClusters(); branch->SetAddress(&((*fRawClusters)[i]));}
dfb4e77d 701 }
c60862bf 702
703 for(int i=0;i<kNCH;i++) {
704 branch=fLoader->TreeR()->GetBranch(Form("%sRawClusters%d" ,GetName(),i+1));
705 if(branch){CreateRawClustersOld(); branch->SetAddress(&((*fRawClusters)[i]));}
c60862bf 706 }
707 }//R
dfb4e77d 708 if(GetDebug())Info("SetTreeAddress","Stop.");
709}//void AliRICH::SetTreeAddress()
c021cb15 710//__________________________________________________________________________________________________
dfb4e77d 711void AliRICH::Print(Option_t *option)const
712{
713 TObject::Print(option);
c60862bf 714 Param()->Dump();
c021cb15 715 fChambers->Print(option);
dfb4e77d 716}//void AliRICH::Print(Option_t *option)const
c021cb15 717//__________________________________________________________________________________________________
3ea9cb08 718void AliRICH::CreateGeometry()
719{//Creates detailed geometry simulation (currently GEANT volumes tree)
720 if(GetDebug())Info("CreateGeometry","Start.");
3ea9cb08 721//Opaque quartz thickness
722 Float_t oqua_thickness = .5;
723//CsI dimensions
c60862bf 724 Float_t pcX=Param()->PcSizeX();
725 Float_t pcY=Param()->PcSizeY();
3ea9cb08 726
727 Int_t *idtmed = fIdtmed->GetArray()-999;
728
729 Int_t i;
730 Float_t zs;
731 Int_t idrotm[1099];
732 Float_t par[3];
733
734//External aluminium box
c60862bf 735 par[0]=68.8*kcm;par[1]=13*kcm;par[2]=70.86*kcm; gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3);
3ea9cb08 736//Air
c60862bf 737 par[0]=66.3; par[1] = 13; par[2] = 68.35; gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3);
3ea9cb08 738//Air 2 (cutting the lower part of the box)
c60862bf 739 par[0]=1.25; par[1] = 3; par[2] = 70.86; gMC->Gsvolu("AIR2", "BOX ", idtmed[1000], par, 3);
3ea9cb08 740//Air 3 (cutting the lower part of the box)
c60862bf 741 par[0]=66.3; par[1] = 3; par[2] = 1.2505; gMC->Gsvolu("AIR3", "BOX ", idtmed[1000], par, 3);
3ea9cb08 742//Honeycomb
c60862bf 743 par[0]=66.3;par[1]=0.188; par[2] = 68.35; gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3);
3ea9cb08 744//Aluminium sheet
c60862bf 745 par[0]=66.3;par[1]=0.025;par[2]=68.35; gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3);
3ea9cb08 746 //par[0] = 66.5; par[1] = .025; par[2] = 63.1;
3ea9cb08 747//Quartz
c60862bf 748 par[0]=Param()->QuartzWidth()/2;par[1]=Param()->QuartzThickness()/2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 749 gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3);
750//Spacers (cylinders)
c60862bf 751 par[0]=0.;par[1]=.5;par[2]=Param()->FreonThickness()/2; gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3);
3ea9cb08 752//Feet (freon slabs supports)
c60862bf 753 par[0] = .7; par[1] = .3; par[2] = 1.9; gMC->Gsvolu("FOOT", "BOX", idtmed[1009], par, 3);
3ea9cb08 754//Opaque quartz
c60862bf 755 par[0]=Param()->QuartzWidth()/2;par[1]= .2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 756 gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3);
757//Frame of opaque quartz
c60862bf 758 par[0]=Param()->OuterFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->OuterFreonLength()/2;
3ea9cb08 759 gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3);
c60862bf 760 par[0]=Param()->InnerFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->InnerFreonLength()/2;
3ea9cb08 761 gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3);
762//Freon
c60862bf 763 par[0]=Param()->OuterFreonWidth()/2 - oqua_thickness;
764 par[1]=Param()->FreonThickness()/2;
765 par[2]=Param()->OuterFreonLength()/2 - 2*oqua_thickness;
3ea9cb08 766 gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3);
767
c60862bf 768 par[0]=Param()->InnerFreonWidth()/2 - oqua_thickness;
769 par[1]=Param()->FreonThickness()/2;
770 par[2]=Param()->InnerFreonLength()/2 - 2*oqua_thickness;
3ea9cb08 771 gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3);
772//Methane
c60862bf 773 par[0]=pcX/2;par[1]=Param()->GapThickness()/2;par[2]=pcY/2; gMC->Gsvolu("META","BOX ",idtmed[1004], par, 3);
3ea9cb08 774//Methane gap
c60862bf 775 par[0]=pcX/2;par[1]=Param()->ProximityGapThickness()/2;par[2]=pcY/2;gMC->Gsvolu("GAP ","BOX ",(*fIdtmed)[kGAP],par,3);
776//CsI PC
777 par[0]=pcX/2;par[1]=.25;par[2]=pcY/2; gMC->Gsvolu("CSI ", "BOX ", (*fIdtmed)[kCSI], par, 3);
3ea9cb08 778//Anode grid
c60862bf 779 par[0] = 0.;par[1] = .001;par[2] = 20.; gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3);
3ea9cb08 780
781//Wire supports
782//Bar of metal
c60862bf 783 par[0]=pcX/2;par[1]=1.05;par[2]=1.05; gMC->Gsvolu("WSMe", "BOX ", idtmed[1009], par, 3);
3ea9cb08 784//Ceramic pick up (base)
c60862bf 785 par[0]=pcX/2;par[1]= .25;par[2]=1.05; gMC->Gsvolu("WSG1", "BOX ", idtmed[1010], par, 3);
3ea9cb08 786//Ceramic pick up (head)
c60862bf 787 par[0] = pcX/2;par[1] = .1;par[2] = .1; gMC->Gsvolu("WSG2", "BOX ", idtmed[1010], par, 3);
3ea9cb08 788
789//Aluminium supports for methane and CsI
790//Short bar
c60862bf 791 par[0]=pcX/2;par[1]=Param()->GapThickness()/2 + .25; par[2] = (68.35 - pcY/2)/2;
3ea9cb08 792 gMC->Gsvolu("SMSH", "BOX", idtmed[1009], par, 3);
793//Long bar
c60862bf 794 par[0]=(66.3 - pcX/2)/2;par[1]=Param()->GapThickness()/2+.25;par[2]=pcY/2+68.35-pcY/2;
3ea9cb08 795 gMC->Gsvolu("SMLG", "BOX", idtmed[1009], par, 3);
796
797//Aluminium supports for freon
798//Short bar
c60862bf 799 par[0] = Param()->QuartzWidth()/2; par[1] = .3; par[2] = (68.35 - Param()->QuartzLength()/2)/2;
3ea9cb08 800 gMC->Gsvolu("SFSH", "BOX", idtmed[1009], par, 3);
801//Long bar
c60862bf 802 par[0] = (66.3 - Param()->QuartzWidth()/2)/2; par[1] = .3;
803 par[2] = Param()->QuartzLength()/2 + 68.35 - Param()->QuartzLength()/2;
3ea9cb08 804 gMC->Gsvolu("SFLG", "BOX", idtmed[1009], par, 3);
805//PCB backplane
c60862bf 806 par[0] = pcX/2;par[1] = .25; par[2] = pcY/4 -.5025; gMC->Gsvolu("PCB ", "BOX", idtmed[1011], par, 3);
3ea9cb08 807
808//Backplane supports
809//Aluminium slab
c60862bf 810 par[0] = 33.15;par[1] = 2;par[2] = 21.65; gMC->Gsvolu("BACK", "BOX", idtmed[1009], par, 3);
3ea9cb08 811//Big hole
c60862bf 812 par[0] = 9.05; par[1] = 2; par[2] = 4.4625; gMC->Gsvolu("BKHL", "BOX", idtmed[1000], par, 3);
3ea9cb08 813//Small hole
c60862bf 814 par[0] = 5.7;par[1] = 2;par[2] = 4.4625; gMC->Gsvolu("BKHS", "BOX", idtmed[1000], par, 3);
3ea9cb08 815//Place holes inside backplane support
816 gMC->Gspos("BKHS", 1, "BACK", .8 + 5.7,0., .6 + 4.4625, 0, "ONLY");
817 gMC->Gspos("BKHS", 2, "BACK", -.8 - 5.7,0., .6 + 4.4625, 0, "ONLY");
818 gMC->Gspos("BKHS", 3, "BACK", .8 + 5.7,0., -.6 - 4.4625, 0, "ONLY");
819 gMC->Gspos("BKHS", 4, "BACK", -.8 - 5.7,0., -.6 - 4.4625, 0, "ONLY");
820 gMC->Gspos("BKHS", 5, "BACK", .8 + 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
821 gMC->Gspos("BKHS", 6, "BACK", -.8 - 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
822 gMC->Gspos("BKHS", 7, "BACK", .8 + 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
823 gMC->Gspos("BKHS", 8, "BACK", -.8 - 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
824 gMC->Gspos("BKHL", 1, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., .6 + 4.4625, 0, "ONLY");
825 gMC->Gspos("BKHL", 2, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 4.4625, 0, "ONLY");
826 gMC->Gspos("BKHL", 3, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 4.4625, 0, "ONLY");
827 gMC->Gspos("BKHL", 4, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 4.4625, 0, "ONLY");
828 gMC->Gspos("BKHL", 5, "BACK", .8 + 11.4+ 1.6 + 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
829 gMC->Gspos("BKHL", 6, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
830 gMC->Gspos("BKHL", 7, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
831 gMC->Gspos("BKHL", 8, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
832//Place material inside RICH
833 gMC->Gspos("SRIC", 1, "RICH", 0.,0., 0., 0, "ONLY");
c60862bf 834 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");
835 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");
836 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");
837 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");
838 gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.025, 0., 0, "ONLY");
839 gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .188, 0., 0, "ONLY");
840 gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .025, 0., 0, "ONLY");
841 gMC->Gspos("FOOT", 1, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
842 gMC->Gspos("FOOT", 2, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3 , 36.9, 0, "ONLY");
843 gMC->Gspos("FOOT", 3, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
844 gMC->Gspos("FOOT", 4, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
845 gMC->Gspos("FOOT", 5, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
846 gMC->Gspos("FOOT", 6, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
847 gMC->Gspos("FOOT", 7, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
848 gMC->Gspos("FOOT", 8, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
849 gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .2, 0., 0, "ONLY");
3ea9cb08 850// Methane supports
c60862bf 851 gMC->Gspos("SMLG", 1, "SRIC", pcX/2 + (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
852 gMC->Gspos("SMLG", 2, "SRIC", - pcX/2 - (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
853 gMC->Gspos("SMSH", 1, "SRIC", 0., 1.276 + .25, pcY/2 + (68.35 - pcY/2)/2, 0, "ONLY");
854 gMC->Gspos("SMSH", 2, "SRIC", 0., 1.276 + .25, - pcY/2 - (68.35 - pcY/2)/2, 0, "ONLY");
3ea9cb08 855//Freon supports
c60862bf 856 Float_t supp_y = 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness() - .2 + .3; //y position of freon supports
857 gMC->Gspos("SFLG", 1, "SRIC", Param()->QuartzWidth()/2 + (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
858 gMC->Gspos("SFLG", 2, "SRIC", - Param()->QuartzWidth()/2 - (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
859 gMC->Gspos("SFSH", 1, "SRIC", 0., supp_y, Param()->QuartzLength()/2 + (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
860 gMC->Gspos("SFSH", 2, "SRIC", 0., supp_y, - Param()->QuartzLength()/2 - (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
3ea9cb08 861 AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.);
862//Place spacers
863 Int_t nspacers = 30;
864 for (i = 0; i < nspacers/3; i++) {
865 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
866 gMC->Gspos("SPAC", i, "FRE1", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
867 }
868 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
869 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
870 gMC->Gspos("SPAC", i, "FRE1", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
871 }
872 for (i = (nspacers*2)/3; i < nspacers; ++i) {
873 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
874 gMC->Gspos("SPAC", i, "FRE1", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
875 }
876 for (i = 0; i < nspacers/3; i++) {
877 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
878 gMC->Gspos("SPAC", i, "FRE2", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
879 }
880 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
881 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
882 gMC->Gspos("SPAC", i, "FRE2", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
883 }
884 for (i = (nspacers*2)/3; i < nspacers; ++i) {
885 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
886 gMC->Gspos("SPAC", i, "FRE2", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
887 }
888 gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
889 gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
c60862bf 890 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)
891 gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings
892 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)
893 gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness()/2, 0., 0, "ONLY");
894 gMC->Gspos("GAP ", 1, "META", 0., Param()->GapThickness()/2 - Param()->ProximityGapThickness()/2 - 0.0001, 0., 0, "ONLY");
3ea9cb08 895 gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
c60862bf 896 gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + Param()->GapThickness()/2 + .25, 0., 0, "ONLY");
3ea9cb08 897//Wire support placing
c60862bf 898 gMC->Gspos("WSG2", 1, "GAP ", 0., Param()->ProximityGapThickness()/2 - .1, 0., 0, "ONLY");
3ea9cb08 899 gMC->Gspos("WSG1", 1, "CSI ", 0., 0., 0., 0, "ONLY");
c60862bf 900 gMC->Gspos("WSMe", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, 0., 0, "ONLY");
3ea9cb08 901//Backplane placing
c60862bf 902 gMC->Gspos("BACK", 1, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 43.3, 0, "ONLY");
903 gMC->Gspos("BACK", 2, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2 , 43.3, 0, "ONLY");
904 gMC->Gspos("BACK", 3, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
905 gMC->Gspos("BACK", 4, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
906 gMC->Gspos("BACK", 5, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
907 gMC->Gspos("BACK", 6, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
3ea9cb08 908//PCB placing
c60862bf 909 gMC->Gspos("PCB ", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, pcX/4 + .5025 + 2.5, 0, "ONLY");
910 gMC->Gspos("PCB ", 2, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, -pcX/4 - .5025 - 2.5, 0, "ONLY");
3ea9cb08 911
912//place chambers into mother volume ALIC
c021cb15 913 for(int i=1;i<=kNCH;i++){
3ea9cb08 914 AliMatrix(idrotm[1000+i],C(i)->ThetaXd(),C(i)->PhiXd(),
915 C(i)->ThetaYd(),C(i)->PhiYd(),
916 C(i)->ThetaZd(),C(i)->PhiZd());
c021cb15 917 gMC->Gspos("RICH",i,"ALIC",C(i)->X(),C(i)->Y(),C(i)->Z(),idrotm[1000+i], "ONLY");
3ea9cb08 918 }
919
920 if(GetDebug())Info("CreateGeometry","Stop.");
921}//void AliRICH::CreateGeometry()
c60862bf 922//__________________________________________________________________________________________________
3ea9cb08 923void AliRICH::CreateChambers()
543d5224 924{//create all RICH Chambers on each call. Previous chambers deleted
925 if(fChambers) delete fChambers;
c60862bf 926 if(GetDebug())Info("CreateChambers","Creating RICH chambers.");
3ea9cb08 927 fChambers=new TObjArray(kNCH);
928 fChambers->SetOwner();
c60862bf 929 for(int i=0;i<kNCH;i++) fChambers->AddAt(new AliRICHChamber(i+1,Param()),i);
3ea9cb08 930}//void AliRICH::CreateChambers()
c021cb15 931//__________________________________________________________________________________________________
c60862bf 932void AliRICH::GenerateFeedbacks(Int_t iChamber,Float_t eloss)
c021cb15 933{// Generate FeedBack photons
934 Int_t j;
935 Float_t cthf, phif, enfp = 0, sthf;
936 Float_t e1[3], e2[3], e3[3];
937 Float_t vmod, uswop;
938 Float_t dir[3], phi;
939 Float_t pol[3], mom[4];
940//Determine number of feedback photons
c712cb2f 941 TLorentzVector globX4;
942 gMC->TrackPosition(globX4);
943 Int_t sector;
944 Int_t iTotQdc=Param()->Loc2TotQdc(C(iChamber)->Glob2Loc(globX4),eloss,gMC->TrackPid(),sector);
945 Int_t iNphotons=gMC->GetRandom()->Poisson(Param()->AlphaFeedback(sector)*iTotQdc);
c021cb15 946 Info("GenerateFeedbacks","N photons=%i",iNphotons);
947//Generate photons
948 for(Int_t i=0;i<iNphotons;i++){
949 Double_t ranf[2];
950 gMC->GetRandom()->RndmArray(2,ranf); //Sample direction
951 cthf=ranf[0]*2-1.0;
952 if(cthf<0) continue;
953 sthf = TMath::Sqrt((1 - cthf) * (1 + cthf));
954 phif = ranf[1] * 2 * TMath::Pi();
955
956 if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57)
957 enfp = 7.5e-9;
958 else if(randomNumber<=0.7)
959 enfp = 6.4e-9;
960 else
961 enfp = 7.9e-9;
962
963
964 dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif);
965 gMC->Gdtom(dir, mom, 2);
966 mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp;
967 mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]);
968
969 // Polarisation
970 e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1];
971 e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0;
972 e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0];
973
974 vmod=0;
975 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
976 if (!vmod) for(j=0;j<3;j++) {
977 uswop=e1[j];
978 e1[j]=e3[j];
979 e3[j]=uswop;
980 }
981 vmod=0;
982 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
983 if (!vmod) for(j=0;j<3;j++) {
984 uswop=e2[j];
985 e2[j]=e3[j];
986 e3[j]=uswop;
987 }
988
989 vmod=0;
990 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
991 vmod=TMath::Sqrt(1/vmod);
992 for(j=0;j<3;j++) e1[j]*=vmod;
993
994 vmod=0;
995 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
996 vmod=TMath::Sqrt(1/vmod);
997 for(j=0;j<3;j++) e2[j]*=vmod;
998
999 phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi();
1000 for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi);
1001 gMC->Gdtom(pol, pol, 2);
1002 Int_t outputNtracksStored;
5d12ce38 1003 gAlice->GetMCApp()->PushTrack(1, //do not transport
1004 gAlice->GetMCApp()->GetCurrentTrackNumber(),//parent track
c021cb15 1005 kFeedback, //PID
1006 mom[0],mom[1],mom[2],mom[3], //track momentum
c712cb2f 1007 globX4.X(),globX4.Y(),globX4.Z(),globX4.T(), //track origin
c021cb15 1008 pol[0],pol[1],pol[2], //polarization
1009 kPFeedBackPhoton,outputNtracksStored,1.0);
1010
1011 }
c712cb2f 1012}//FeedBackPhotons()
c021cb15 1013//__________________________________________________________________________________________________