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private RICH config
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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"
a4622d0f 26#include "AliRICHRecHit1D.h"
c60862bf 27#include <AliRun.h>
28#include <AliRunDigitizer.h>
ddae0931 29
853634d3 30ClassImp(AliRICHhit)
c60862bf 31//__________________________________________________________________________________________________
32void AliRICHhit::Print(Option_t*)const
33{
34 Info("","chamber=%2i, PID=%9i, TID=%6i, eloss=%9.3f eV",fChamber,fPid,fTrack,fEloss*1e9);
35}//void AliRICHdigit::Print(Option_t *option)const
36//__________________________________________________________________________________________________
853634d3 37ClassImp(AliRICHdigit)
c60862bf 38//__________________________________________________________________________________________________
39void AliRICHdigit::Print(Option_t*)const
40{
41 Info("","ID=%6i, chamber=%2i, PadX=%3i, PadY=%3i, Qdc=%4i, TID1=%5i, TID2=%5i, TID3=%5i",
42 Id(),fChamber,fPadX,fPadY,fQdc,fTracks[0],fTracks[1],fTracks[2]);
43}//void AliRICHdigit::Print(Option_t *option)const
44//__________________________________________________________________________________________________
45
46ClassImp(AliRICH)
47//__________________________________________________________________________________________________
15d8311d 48// RICH manager class
c60862bf 49//BEGIN_HTML
15d8311d 50/*
51 <img src="gif/alirich.gif">
52*/
c60862bf 53//END_HTML
54//__________________________________________________________________________________________________
fe4da5cc 55AliRICH::AliRICH()
c60862bf 56 :AliDetector()
dfb4e77d 57{//Default ctor should not contain any new operators
c60862bf 58 fpParam =0;
543d5224 59 fChambers =0;
60//AliDetector ctor deals with Hits and Digits
c60862bf 61 fSdigits =0; fNsdigits =0;
62 fDigitsNew =0; for(int i=0;i<kNCH;i++) fNdigitsNew[i] =0;
63 fClusters =0; for(int i=0;i<kNCH;i++) fNclusters[i]=0;
64
65 fCerenkovs =0; fNcerenkovs =0;
66 fSpecials =0; fNspecials =0;
67 fDchambers =0; for(int i=0;i<kNCH;i++) fNdch[i]=0;
543d5224 68 fRawClusters=0; for(int i=0;i<kNCH;i++) fNrawch[i]=0;
c60862bf 69 fRecHits1D =0; for(int i=0;i<kNCH;i++) fNrechits1D[i]=0;
543d5224 70 fCkovNumber=fFreonProd=0;
15d8311d 71}//AliRICH::AliRICH()
c021cb15 72//__________________________________________________________________________________________________
fe4da5cc 73AliRICH::AliRICH(const char *name, const char *title)
dfb4e77d 74 :AliDetector(name,title)
75{//Named ctor
76 if(GetDebug())Info("named ctor","Start.");
c60862bf 77 fpParam = new AliRICHParam;
78 fChambers = 0; CreateChambers();
543d5224 79//AliDetector ctor deals with Hits and Digits (reset them to 0, does not create them)
c60862bf 80 fHits= 0; CreateHits(); gAlice->AddHitList(fHits);
81 fSdigits= 0;
82 fDigitsNew= 0;
83 fClusters= 0;
84
85 fCerenkovs= 0; CreateCerenkovsOld(); gAlice->AddHitList(fCerenkovs);
86 fSpecials= 0; CreateSpecialsOld();
87 fDchambers= 0; //CreateDigitsOld();
88 fRawClusters=0; //CreateRawClustersOld();
89 fRecHits1D= 0; //CreateRecos1Old();
c60862bf 90
91 fCkovNumber=fFreonProd=0;
dfb4e77d 92 if(GetDebug())Info("named ctor","Stop.");
93}//AliRICH::AliRICH(const char *name, const char *title)
c021cb15 94//__________________________________________________________________________________________________
fe4da5cc 95AliRICH::~AliRICH()
dfb4e77d 96{//dtor
97 if(GetDebug()) Info("dtor","Start.");
237c933d 98
c60862bf 99 if(fpParam) delete fpParam;
100 if(fChambers) delete fChambers;
101
102 if(fHits) delete fHits;
103 if(fSdigits) delete fSdigits;
104 if(fDigits) delete fDigits;
105 if(fDigitsNew) {fDigitsNew->Delete(); delete fDigitsNew;}
106 if(fClusters) {fClusters->Delete(); delete fClusters;}
107
108 if(fCerenkovs) delete fCerenkovs;
109 if(fSpecials) delete fSpecials;
110 if(fDchambers) {fDchambers->Delete(); delete fDchambers;}
111 if(fRawClusters) {fRawClusters->Delete(); delete fRawClusters;}
112 if(fRecHits1D) {fRecHits1D->Delete(); delete fRecHits1D;}
dfb4e77d 113 if(GetDebug()) Info("dtor","Stop.");
114}//AliRICH::~AliRICH()
c021cb15 115//__________________________________________________________________________________________________
3ea9cb08 116void AliRICH::Hits2SDigits()
c60862bf 117{//Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
3ea9cb08 118 if(GetDebug()) Info("Hit2SDigits","Start.");
543d5224 119 GetLoader()->LoadHits();
853634d3 120
543d5224 121 for(Int_t iEventN=0;iEventN<gAlice->GetEventsPerRun();iEventN++){//events loop
122 gAlice->GetRunLoader()->GetEvent(iEventN);
123
124 GetLoader()->MakeTree("S"); MakeBranch("S");
125 ResetSdigits(); ResetSpecialsOld();
126
127 for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop
128 GetLoader()->TreeH()->GetEntry(iPrimN);
129 for(Int_t i=0;i<Specials()->GetEntries();i++){//specials loop
130 Int_t padx= ((AliRICHSDigit*)Specials()->At(i))->PadX();
131 Int_t pady= ((AliRICHSDigit*)Specials()->At(i))->PadY();
132 Int_t qdc= ((AliRICHSDigit*)Specials()->At(i))->QPad();
133 Int_t hitN= ((AliRICHSDigit*)Specials()->At(i))->HitNumber()-1;//!!! important -1
134 Int_t chamber=((AliRICHhit*)Hits()->At(hitN))->C();
135 Int_t track=((AliRICHhit*)Hits()->At(hitN))->GetTrack();
136 AddSdigit(chamber,padx+Param()->NpadsX()/2,pady+Param()->NpadsY()/2,qdc,track);
137 }//specials loop
138 }//prims loop
139 GetLoader()->TreeS()->Fill();
140 GetLoader()->WriteSDigits("OVERWRITE");
141 if(GetDebug()) Info("Hit2SDigits","Event %i processed.",iEventN);
142 }//events loop
143 GetLoader()->UnloadHits(); GetLoader()->UnloadSDigits();
144 ResetHits(); ResetSdigits();
853634d3 145 if(GetDebug()) Info("Hit2SDigits","Stop.");
c021cb15 146}//void AliRICH::Hits2SDigits()
147//__________________________________________________________________________________________________
dfb4e77d 148void AliRICH::SDigits2Digits()
149{//Generate digits from sdigits.
150 if(GetDebug()) Info("SDigits2Digits","Start.");
543d5224 151
152 GetLoader()->LoadSDigits();
153
154 for(Int_t iEventN=0;iEventN<gAlice->GetEventsPerRun();iEventN++){//events loop
155 gAlice->GetRunLoader()->GetEvent(iEventN);
c021cb15 156
543d5224 157 GetLoader()->MakeTree("D"); MakeBranch("D"); //create TreeD with RICH branches
158 ResetSdigits();ResetDigitsOld();//reset lists of sdigits and digits
159 GetLoader()->TreeS()->GetEntry(0);
160 Sdigits()->Sort();
161
162 Int_t kBad=-101;
163
164 Int_t tr[3],q[3],dig[5]; for(Int_t i=0;i<3;i++) tr[i]=q[i]=kBad; for(Int_t i=0;i<5;i++) dig[i]=kBad;
165 Int_t chamber=kBad,id=kBad,iNdigitsPerPad=kBad;//how many sdigits for a given pad
166
167 for(Int_t i=0;i<Sdigits()->GetEntries();i++){//sdigits loop (sorted)
168 AliRICHdigit *pSdig=(AliRICHdigit*)Sdigits()->At(i);
169 if(pSdig->Id()==id){//still the same pad
170 iNdigitsPerPad++;
171 dig[2]+=pSdig->Qdc();//sum up qdc
172 if(iNdigitsPerPad<=3)
173 tr[iNdigitsPerPad-1]=pSdig->T(0);
174 else
175 Info("","More then 3 sdigits for the given pad");
176 }else{//new pad, add the pevious one
177 if(id!=kBad) AddDigitOld(chamber,tr,q,dig);
178 chamber=pSdig->C();dig[0]=pSdig->X();dig[1]=pSdig->Y();dig[2]=pSdig->Qdc();tr[0]=pSdig->T(0);id=pSdig->Id();
179 iNdigitsPerPad=1;tr[1]=tr[2]=kBad;
180 }
181 }//sdigits loop (sorted)
182 AddDigitOld(chamber,tr,q,dig);//add the last digit
183
184 GetLoader()->TreeD()->Fill();
185 GetLoader()->WriteDigits("OVERWRITE");
186 if(GetDebug()) Info("SDigits2Digits","Event %i processed.",iEventN);
187 }//events loop
188 GetLoader()->UnloadSDigits(); GetLoader()->UnloadDigits();
189 ResetSdigits(); ResetDigitsOld();
dfb4e77d 190 if(GetDebug()) Info("SDigits2Digits","Stop.");
191}//void AliRICH::SDigits2Digits()
c021cb15 192//__________________________________________________________________________________________________
34ead2dd 193void AliRICH::Digits2Reco()
c60862bf 194{//Generate clusters from digits then generate recos from clusters or digits
195 if(GetDebug()) Info("Digits2reco","Start.");
34ead2dd 196
dfb4e77d 197}//void AliRICH::Digits2Reco()
c021cb15 198//__________________________________________________________________________________________________
a4622d0f 199void AliRICH::AddRecHit1D(Int_t id, Float_t *rechit, Float_t *photons, Int_t *padsx, Int_t* padsy)
dfb4e77d 200{// Add a RICH reconstructed hit to the list
a4622d0f 201
2682e810 202 TClonesArray &lrec1D = *((TClonesArray*)fRecHits1D->At(id));
a4622d0f 203 new(lrec1D[fNrechits1D[id]++]) AliRICHRecHit1D(id,rechit,photons,padsx,padsy);
204}
a4622d0f 205//_____________________________________________________________________________
dfb4e77d 206void AliRICH::BuildGeometry()
3ea9cb08 207{//Builds a TNode geometry for event display
dfb4e77d 208 if(GetDebug())Info("BuildGeometry","Start.");
237c933d 209
3ea9cb08 210 TNode *node, *subnode, *top;
211 top=gAlice->GetGeometry()->GetNode("alice");
c24372d0 212
3ea9cb08 213 new TBRIK("S_RICH","S_RICH","void",71.09999,11.5,73.15);
53d98323 214
c60862bf 215 Float_t wid=Param()->SectorSizeX();
216 Float_t len=Param()->SectorSizeY();
3ea9cb08 217 new TBRIK("PHOTO","PHOTO","void",wid/2,0.1,len/2);
218
c021cb15 219 for(int i=1;i<=kNCH;i++){
237c933d 220 top->cd();
c021cb15 221 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 222 node->SetLineColor(kRed);
91975aa2 223 node->cd();
c60862bf 224 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 225 subnode->SetLineColor(kGreen);
226 fNodes->Add(subnode);
c60862bf 227 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,len/2+Param()->DeadZone()/2,"");
91975aa2 228 subnode->SetLineColor(kGreen);
229 fNodes->Add(subnode);
c60862bf 230 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 231 subnode->SetLineColor(kGreen);
232 fNodes->Add(subnode);
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);
237c933d 242 fNodes->Add(node);
3ea9cb08 243 }
dfb4e77d 244 if(GetDebug())Info("BuildGeometry","Stop.");
245}//void AliRICH::BuildGeometry()
c60862bf 246
247static Int_t kCSI=6;
248static Int_t kGAP=9;
dfb4e77d 249//______________________________________________________________________________
452a64c6 250void AliRICH::CreateMaterials()
251{
252 //
253 // *** DEFINITION OF AVAILABLE RICH MATERIALS ***
254 // ORIGIN : NICK VAN EIJNDHOVEN
255 // Modified by: N. Colonna (INFN - BARI, Nicola.Colonna@ba.infn.it)
256 // R.A. Fini (INFN - BARI, Rosanna.Fini@ba.infn.it)
257 // R.A. Loconsole (Bari University, loco@riscom.ba.infn.it)
258 //
452a64c6 259 Int_t i;
452a64c6 260
452a64c6 261 //Photons energy intervals
262 Float_t ppckov[26];
263 for (i=0;i<26;i++)
264 {
265 ppckov[i] = (Float_t(i)*0.1+5.5)*1e-9;
452a64c6 266 }
267
268
269 //Refraction index for quarz
270 Float_t rIndexQuarz[26];
271 Float_t e1= 10.666;
272 Float_t e2= 18.125;
273 Float_t f1= 46.411;
274 Float_t f2= 228.71;
275 for (i=0;i<26;i++)
276 {
277 Float_t ene=ppckov[i]*1e9;
278 Float_t a=f1/(e1*e1 - ene*ene);
279 Float_t b=f2/(e2*e2 - ene*ene);
280 rIndexQuarz[i] = TMath::Sqrt(1. + a + b );
452a64c6 281 }
282
283 //Refraction index for opaque quarz, methane and grid
284 Float_t rIndexOpaqueQuarz[26];
285 Float_t rIndexMethane[26];
286 Float_t rIndexGrid[26];
287 for (i=0;i<26;i++)
288 {
289 rIndexOpaqueQuarz[i]=1;
290 rIndexMethane[i]=1.000444;
291 rIndexGrid[i]=1;
452a64c6 292 }
293
294 //Absorption index for freon
295 Float_t abscoFreon[26] = {179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987,
296 179.0987, 142.9206, 56.64957, 25.58622, 13.95293, 12.03905, 10.42953, 8.804196,
297 7.069031, 4.461292, 2.028366, 1.293013, .577267, .40746, .334964, 0., 0., 0.};
298
452a64c6 299
300 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,
301 19.266, 17.525, 15.878, 14.177, 11.719, 9.282, 6.62, 4.0925, 2.601, 1.149, .667, .3627,
302 .192, .1497, .10857};
303
304 //Absorption index for methane
305 Float_t abscoMethane[26];
306 for (i=0;i<26;i++)
307 {
308 abscoMethane[i]=AbsoCH4(ppckov[i]*1e9);
452a64c6 309 }
310
311 //Absorption index for opaque quarz, csi and grid, efficiency for all and grid
312 Float_t abscoOpaqueQuarz[26];
313 Float_t abscoCsI[26];
314 Float_t abscoGrid[26];
315 Float_t efficAll[26];
316 Float_t efficGrid[26];
317 for (i=0;i<26;i++)
318 {
319 abscoOpaqueQuarz[i]=1e-5;
320 abscoCsI[i]=1e-4;
321 abscoGrid[i]=1e-4;
322 efficAll[i]=1;
323 efficGrid[i]=1;
452a64c6 324 }
325
326 //Efficiency for csi
327
328 Float_t efficCsI[26] = {0.000199999995, 0.000600000028, 0.000699999975, 0.00499999989, 0.00749999983, 0.010125,
329 0.0242999997, 0.0405000001, 0.0688500032, 0.105299994, 0.121500008, 0.141749993, 0.157949999,
330 0.162, 0.166050002, 0.167669997, 0.174299985, 0.176789999, 0.179279998, 0.182599992, 0.18592,
331 0.187579989, 0.189239994, 0.190899998, 0.207499996, 0.215799987};
332
333
334
335 //FRESNEL LOSS CORRECTION FOR PERPENDICULAR INCIDENCE AND
336 //UNPOLARIZED PHOTONS
337
338 for (i=0;i<26;i++)
339 {
340 efficCsI[i] = efficCsI[i]/(1.-Fresnel(ppckov[i]*1e9,1.,0));
452a64c6 341 }
342
343 /*******************************************End of rich_media.f***************************************/
452a64c6 344
c60862bf 345 Float_t rIndexFreon[26];
452a64c6 346
452a64c6 347
452a64c6 348 // --- Photon energy (GeV)
349 // --- Refraction indexes
350 for (i = 0; i < 26; ++i) {
351 rIndexFreon[i] = ppckov[i] * .0172 * 1e9 + 1.177;
352 //rIndexFreon[i] = 1;
452a64c6 353 }
354
c60862bf 355
356 Float_t a=0,z=0,den=0,radl=0,absl=0;
357 Float_t tmaxfd=-10.0, deemax=-0.2, stemax=-0.1,epsil=0.001, stmin=-0.001;
358 Int_t isxfld = gAlice->Field()->Integ();
359 Float_t sxmgmx = gAlice->Field()->Max();
452a64c6 360
c60862bf 361 AliMaterial( 1, "Air $",a=14.61,z=7.3, den=0.001205,radl=30420.0,absl=67500);//(Air)
362 AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
452a64c6 363
c60862bf 364 AliMaterial( 6, "HON", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //(C)-equivalent radl
365 AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
366
367 AliMaterial(16, "CSI", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //CsI-radl equivalent
368 AliMedium(kCSI, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
369
370 AliMaterial(11, "GRI", a=63.54,z=29.0,den=8.96, radl=1.43, absl=0); //anode grid (Cu)
371 AliMedium(7, "GRIGLIA$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
372
373 AliMaterial(50, "ALUM", a=26.98,z=13.0,den=2.7, radl=8.9, absl=0); //aluminium sheet (Al)
374 AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
375
376 AliMaterial(31, "COPPER$", a=63.54,z=29.0,den=8.96, radl=1.4, absl=0); //(Cu)
377 AliMedium(12, "PCB_COPPER", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
378
379 Float_t aQuartz[2]={28.09,16.0}; Float_t zQuartz[2]={14.00, 8.0}; Float_t wmatQuartz[2]={1,2};
380 AliMixture (20, "QUA",aQuartz,zQuartz,den=2.64,-2, wmatQuartz);//Quarz (SiO2) - trasnparent
381 AliMedium(3, "QUARZO$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
382
383 AliMixture (21, "QUAO",aQuartz, zQuartz, den=2.64, -2, wmatQuartz);//Quarz (SiO2) - opaque
384 AliMedium(8, "QUARZOO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
385
386 Float_t aFreon[2]={12,19}; Float_t zFreon[2]={6,9}; Float_t wmatFreon[2]={6,14};
387 AliMixture (30, "FRE",aFreon,zFreon,den=1.7,-2,wmatFreon);//Freon (C6F14)
388 AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
389
390 Float_t aMethane[2]={12.01,1}; Float_t zMethane[2]={6,1}; Float_t wmatMethane[2]={1,4};
391 AliMixture (40, "MET", aMethane, zMethane, den=7.17e-4,-2, wmatMethane);//methane (CH4)
392 AliMedium(5, "METANO$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
393
394 AliMixture (41, "METG", aMethane, zMethane, den=7.17e-4, -2, wmatMethane);
395 AliMedium(kGAP, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, 0.1, -deemax, epsil, -stmin);
396
397 Float_t aGlass[5]={12.01, 28.09, 16., 10.8, 23.};
398 Float_t zGlass[5]={ 6., 14., 8., 5., 11.};
399 Float_t wGlass[5]={ 0.5, 0.105, 0.355, 0.03, 0.01};
400 AliMixture (32, "GLASS",aGlass, zGlass, den=1.74, 5, wGlass);//Glass 50%C+10.5%Si+35.5%O+3% + 1%
401 AliMedium(11, "GLASS", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
402
403 Int_t *idtmed = fIdtmed->GetArray()-999;
404 gMC->SetCerenkov(idtmed[1000], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
405 gMC->SetCerenkov(idtmed[1001], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
406 gMC->SetCerenkov(idtmed[1002], 26, ppckov, abscoQuarz, efficAll, rIndexQuarz);
407 gMC->SetCerenkov(idtmed[1003], 26, ppckov, abscoFreon, efficAll, rIndexFreon);
408 gMC->SetCerenkov(idtmed[1004], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
409 gMC->SetCerenkov(idtmed[1005], 26, ppckov, abscoCsI, efficCsI, rIndexMethane);
410 gMC->SetCerenkov(idtmed[1006], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
411 gMC->SetCerenkov(idtmed[1007], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
412 gMC->SetCerenkov(idtmed[1008], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
413 gMC->SetCerenkov(idtmed[1009], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
414 gMC->SetCerenkov(idtmed[1010], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
415}//void AliRICH::CreateMaterials()
c021cb15 416//__________________________________________________________________________________________________
452a64c6 417Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
418{
419
420 //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
421
422 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,
423 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,
424 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
452a64c6 425 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
426 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
427 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
428 1.72,1.53};
452a64c6 429 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
430 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
431 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
432 1.714,1.498};
433 Float_t xe=ene;
434 Int_t j=Int_t(xe*10)-49;
435 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
436 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
437
438 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
439 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
440
441 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
442 Float_t tanin=sinin/pdoti;
443
444 Float_t c1=cn*cn-ck*ck-sinin*sinin;
445 Float_t c2=4*cn*cn*ck*ck;
446 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
447 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
448
449 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
450 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
451
452
453 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
454 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
455
456 Float_t sigraf=18.;
457 Float_t lamb=1240/ene;
458 Float_t fresn;
459
460 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
461
462 if(pola)
463 {
464 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
465 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
466 }
467 else
468 fresn=0.5*(rp+rs);
469
470 fresn = fresn*rO;
471 return(fresn);
c021cb15 472}//Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
473//__________________________________________________________________________________________________
452a64c6 474Float_t AliRICH::AbsoCH4(Float_t x)
475{
476
477 //KLOSCH,SCH4(9),WL(9),EM(9),ALENGTH(31)
478 Float_t sch4[9] = {.12,.16,.23,.38,.86,2.8,7.9,28.,80.}; //MB X 10^22
479 //Float_t wl[9] = {153.,152.,151.,150.,149.,148.,147.,146.,145};
480 Float_t em[9] = {8.1,8.158,8.212,8.267,8.322,8.378,8.435,8.493,8.55};
481 const Float_t kLosch=2.686763E19; // LOSCHMIDT NUMBER IN CM-3
482 const Float_t kIgas1=100, kIgas2=0, kOxy=10., kWater=5., kPressure=750.,kTemperature=283.;
483 Float_t pn=kPressure/760.;
484 Float_t tn=kTemperature/273.16;
485
486
487// ------- METHANE CROSS SECTION -----------------
488// ASTROPH. J. 214, L47 (1978)
489
490 Float_t sm=0;
491 if (x<7.75)
492 sm=.06e-22;
493
494 if(x>=7.75 && x<=8.1)
495 {
496 Float_t c0=-1.655279e-1;
497 Float_t c1=6.307392e-2;
498 Float_t c2=-8.011441e-3;
499 Float_t c3=3.392126e-4;
500 sm=(c0+c1*x+c2*x*x+c3*x*x*x)*1.e-18;
501 }
502
503 if (x> 8.1)
504 {
505 Int_t j=0;
506 while (x<=em[j] && x>=em[j+1])
507 {
508 j++;
509 Float_t a=(sch4[j+1]-sch4[j])/(em[j+1]-em[j]);
510 sm=(sch4[j]+a*(x-em[j]))*1e-22;
511 }
512 }
513
514 Float_t dm=(kIgas1/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
515 Float_t abslm=1./sm/dm;
516
517// ------- ISOBUTHANE CROSS SECTION --------------
518// i-C4H10 (ai) abs. length from curves in
519// Lu-McDonald paper for BARI RICH workshop .
520// -----------------------------------------------------------
521
522 Float_t ai;
523 Float_t absli;
524 if (kIgas2 != 0)
525 {
526 if (x<7.25)
527 ai=100000000.;
528
529 if(x>=7.25 && x<7.375)
530 ai=24.3;
531
532 if(x>=7.375)
533 ai=.0000000001;
534
535 Float_t si = 1./(ai*kLosch*273.16/293.); // ISOB. CRO.SEC.IN CM2
536 Float_t di=(kIgas2/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
537 absli =1./si/di;
538 }
539 else
540 absli=1.e18;
541// ---------------------------------------------------------
542//
543// transmission of O2
544//
545// y= path in cm, x=energy in eV
546// so= cross section for UV absorption in cm2
547// do= O2 molecular density in cm-3
548// ---------------------------------------------------------
549
550 Float_t abslo;
551 Float_t so=0;
552 if(x>=6.0)
553 {
554 if(x>=6.0 && x<6.5)
555 {
556 so=3.392709e-13 * TMath::Exp(2.864104 *x);
557 so=so*1e-18;
558 }
559
560 if(x>=6.5 && x<7.0)
561 {
562 so=2.910039e-34 * TMath::Exp(10.3337*x);
563 so=so*1e-18;
564 }
565
566
567 if (x>=7.0)
568 {
569 Float_t a0=-73770.76;
570 Float_t a1=46190.69;
571 Float_t a2=-11475.44;
572 Float_t a3=1412.611;
573 Float_t a4=-86.07027;
574 Float_t a5=2.074234;
575 so= a0+(a1*x)+(a2*x*x)+(a3*x*x*x)+(a4*x*x*x*x)+(a5*x*x*x*x*x);
576 so=so*1e-18;
577 }
578
579 Float_t dox=(kOxy/1e6)*kLosch*pn/tn;
580 abslo=1./so/dox;
581 }
582 else
583 abslo=1.e18;
584// ---------------------------------------------------------
585//
586// transmission of H2O
587//
588// y= path in cm, x=energy in eV
589// sw= cross section for UV absorption in cm2
590// dw= H2O molecular density in cm-3
591// ---------------------------------------------------------
592
593 Float_t abslw;
594
dfb4e77d 595 Float_t b0=29231.65;
596 Float_t b1=-15807.74;
597 Float_t b2=3192.926;
598 Float_t b3=-285.4809;
599 Float_t b4=9.533944;
452a64c6 600
dfb4e77d 601 if(x>6.75)
602 {
603 Float_t sw= b0+(b1*x)+(b2*x*x)+(b3*x*x*x)+(b4*x*x*x*x);
604 sw=sw*1e-18;
605 Float_t dw=(kWater/1e6)*kLosch*pn/tn;
606 abslw=1./sw/dw;
607 }
608 else
609 abslw=1.e18;
610
611// ---------------------------------------------------------
452a64c6 612
dfb4e77d 613 Float_t alength=1./(1./abslm+1./absli+1./abslo+1./abslw);
614 return (alength);
615}
c021cb15 616//__________________________________________________________________________________________________
dfb4e77d 617void AliRICH::MakeBranch(Option_t* option)
618{//Create Tree branches for the RICH.
619 if(GetDebug())Info("MakeBranch","Start with option= %s.",option);
620
621 const Int_t kBufferSize = 4000;
dfb4e77d 622
dfb4e77d 623 const char *cH = strstr(option,"H");
624 const char *cD = strstr(option,"D");
625 const char *cR = strstr(option,"R");
626 const char *cS = strstr(option,"S");
627
c60862bf 628 if(cH&&TreeH()){//H
629 CreateHits(); //branch will be created in AliDetector::MakeBranch
630 CreateCerenkovsOld(); MakeBranchInTree(TreeH(),"RICHCerenkov", &fCerenkovs, kBufferSize,0);
631 CreateSpecialsOld(); MakeBranchInTree(TreeH(),"RICHSpecials", &fSpecials,kBufferSize,0);
632 }//H
dfb4e77d 633 AliDetector::MakeBranch(option);//this is after cH because we need to guarantee that fHits array is created
634
c60862bf 635 if(cS&&fLoader->TreeS()){//S
636 CreateSdigits(); MakeBranchInTree(fLoader->TreeS(),"RICH",&fSdigits,kBufferSize,0) ;
637 }//S
dfb4e77d 638
c60862bf 639 if(cD&&fLoader->TreeD()){//D
543d5224 640 CreateDigits();
c60862bf 641 CreateDigitsOld();
543d5224 642 for(int i=0;i<kNCH;i++){
c60862bf 643 MakeBranchInTree(fLoader->TreeD(),Form("%sDigits%d",GetName(),i+1),&((*fDchambers)[i]),kBufferSize,0);
543d5224 644 MakeBranchInTree(fLoader->TreeD(),Form("%s%d",GetName(),i+1),&((*fDigitsNew)[i]),kBufferSize,0);
645 }
c60862bf 646 }//D
647
648 if(cR&&fLoader->TreeR()){//R
649 CreateRawClustersOld();
650 for(int i=0; i<kNCH ;i++)
651 MakeBranchInTree(fLoader->TreeR(),Form("%sRawClusters%d",GetName(),i+1), &((*fRawClusters)[i]), kBufferSize, 0);
652
653 CreateRecos1Old();
654 for(int i=0; i<kNCH ;i++)
394c3f6d 655 MakeBranchInTree(fLoader->TreeR(),Form("%sRecHits1D%d",GetName(),i+1),&((*fRecHits1D)[i]),kBufferSize,0);
c60862bf 656 }//R
dfb4e77d 657 if(GetDebug())Info("MakeBranch","Stop.");
c021cb15 658}//void AliRICH::MakeBranch(Option_t* option)
c60862bf 659//__________________________________________________________________________________________________
dfb4e77d 660void AliRICH::SetTreeAddress()
661{//Set branch address for the Hits and Digits Tree.
662 if(GetDebug())Info("SetTreeAddress","Start.");
c60862bf 663
dfb4e77d 664 TBranch *branch;
dfb4e77d 665
c60862bf 666 if(fLoader->TreeH()){//H
853634d3 667 if(GetDebug())Info("SetTreeAddress","tree H is requested.");
c60862bf 668 CreateHits();//branch map will be in AliDetector::SetTreeAddress
669 branch=fLoader->TreeH()->GetBranch("RICHCerenkov"); if(branch){CreateCerenkovsOld(); branch->SetAddress(&fCerenkovs);}
670 branch=fLoader->TreeH()->GetBranch("RICHSpecials"); if(branch){CreateSpecialsOld(); branch->SetAddress(&fSpecials);}
671 }//H
c021cb15 672 AliDetector::SetTreeAddress();//this is after TreeH because we need to guarantee that fHits array is created
673
c60862bf 674 if(fLoader->TreeS()){//S
853634d3 675 if(GetDebug())Info("SetTreeAddress","tree S is requested.");
c60862bf 676 branch=fLoader->TreeS()->GetBranch(GetName()); if(branch){CreateSdigits(); branch->SetAddress(&fSdigits);}
677 }//S
dfb4e77d 678
c60862bf 679 if(fLoader->TreeD()){//D
853634d3 680 if(GetDebug())Info("SetTreeAddress","tree D is requested.");
c60862bf 681 for(int i=0;i<kNCH;i++){
682 branch=fLoader->TreeD()->GetBranch(Form("%s%d",GetName(),i+1));
683 if(branch){CreateDigits(); branch->SetAddress(&((*fDigitsNew)[i]));}
dfb4e77d 684
c60862bf 685 branch=fLoader->TreeD()->GetBranch(Form("%sDigits%d",GetName(),i+1));
686 if(branch){CreateDigitsOld(); branch->SetAddress(&((*fDchambers)[i]));}
687 }//for
688 }//D
dfb4e77d 689
c60862bf 690 if(fLoader->TreeR()){//R
853634d3 691 if(GetDebug())Info("SetTreeAddress","tree R is requested.");
692
c60862bf 693 for(int i=0;i<kNCH;i++){
694 branch=fLoader->TreeR()->GetBranch(Form("%sClusters%d" ,GetName(),i+1));
695 if(branch){CreateClusters(); branch->SetAddress(&((*fRawClusters)[i]));}
dfb4e77d 696 }
c60862bf 697
698 for(int i=0;i<kNCH;i++) {
699 branch=fLoader->TreeR()->GetBranch(Form("%sRawClusters%d" ,GetName(),i+1));
700 if(branch){CreateRawClustersOld(); branch->SetAddress(&((*fRawClusters)[i]));}
dfb4e77d 701
c60862bf 702 branch=fLoader->TreeR()->GetBranch(Form("%sRecHits1D%d",GetName(),i+1));
703 if(branch){CreateRecos1Old(); branch->SetAddress(&((*fRecHits1D)[i]));}
c60862bf 704 }
705 }//R
dfb4e77d 706 if(GetDebug())Info("SetTreeAddress","Stop.");
707}//void AliRICH::SetTreeAddress()
c021cb15 708//__________________________________________________________________________________________________
dfb4e77d 709void AliRICH::Print(Option_t *option)const
710{
711 TObject::Print(option);
c60862bf 712 Param()->Dump();
c021cb15 713 fChambers->Print(option);
dfb4e77d 714}//void AliRICH::Print(Option_t *option)const
c021cb15 715//__________________________________________________________________________________________________
3ea9cb08 716void AliRICH::CreateGeometry()
717{//Creates detailed geometry simulation (currently GEANT volumes tree)
718 if(GetDebug())Info("CreateGeometry","Start.");
719//???????? to be removed to AliRICHParam?
c60862bf 720 Param()->RadiatorToPads(Param()->FreonThickness()/2+Param()->QuartzThickness()+Param()->GapThickness());
3ea9cb08 721
722//Opaque quartz thickness
723 Float_t oqua_thickness = .5;
724//CsI dimensions
c60862bf 725 Float_t pcX=Param()->PcSizeX();
726 Float_t pcY=Param()->PcSizeY();
3ea9cb08 727
728 Int_t *idtmed = fIdtmed->GetArray()-999;
729
730 Int_t i;
731 Float_t zs;
732 Int_t idrotm[1099];
733 Float_t par[3];
734
735//External aluminium box
c60862bf 736 par[0]=68.8*kcm;par[1]=13*kcm;par[2]=70.86*kcm; gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3);
3ea9cb08 737//Air
c60862bf 738 par[0]=66.3; par[1] = 13; par[2] = 68.35; gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3);
3ea9cb08 739//Air 2 (cutting the lower part of the box)
c60862bf 740 par[0]=1.25; par[1] = 3; par[2] = 70.86; gMC->Gsvolu("AIR2", "BOX ", idtmed[1000], par, 3);
3ea9cb08 741//Air 3 (cutting the lower part of the box)
c60862bf 742 par[0]=66.3; par[1] = 3; par[2] = 1.2505; gMC->Gsvolu("AIR3", "BOX ", idtmed[1000], par, 3);
3ea9cb08 743//Honeycomb
c60862bf 744 par[0]=66.3;par[1]=0.188; par[2] = 68.35; gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3);
3ea9cb08 745//Aluminium sheet
c60862bf 746 par[0]=66.3;par[1]=0.025;par[2]=68.35; gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3);
3ea9cb08 747 //par[0] = 66.5; par[1] = .025; par[2] = 63.1;
3ea9cb08 748//Quartz
c60862bf 749 par[0]=Param()->QuartzWidth()/2;par[1]=Param()->QuartzThickness()/2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 750 gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3);
751//Spacers (cylinders)
c60862bf 752 par[0]=0.;par[1]=.5;par[2]=Param()->FreonThickness()/2; gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3);
3ea9cb08 753//Feet (freon slabs supports)
c60862bf 754 par[0] = .7; par[1] = .3; par[2] = 1.9; gMC->Gsvolu("FOOT", "BOX", idtmed[1009], par, 3);
3ea9cb08 755//Opaque quartz
c60862bf 756 par[0]=Param()->QuartzWidth()/2;par[1]= .2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 757 gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3);
758//Frame of opaque quartz
c60862bf 759 par[0]=Param()->OuterFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->OuterFreonLength()/2;
3ea9cb08 760 gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3);
c60862bf 761 par[0]=Param()->InnerFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->InnerFreonLength()/2;
3ea9cb08 762 gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3);
763//Freon
c60862bf 764 par[0]=Param()->OuterFreonWidth()/2 - oqua_thickness;
765 par[1]=Param()->FreonThickness()/2;
766 par[2]=Param()->OuterFreonLength()/2 - 2*oqua_thickness;
3ea9cb08 767 gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3);
768
c60862bf 769 par[0]=Param()->InnerFreonWidth()/2 - oqua_thickness;
770 par[1]=Param()->FreonThickness()/2;
771 par[2]=Param()->InnerFreonLength()/2 - 2*oqua_thickness;
3ea9cb08 772 gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3);
773//Methane
c60862bf 774 par[0]=pcX/2;par[1]=Param()->GapThickness()/2;par[2]=pcY/2; gMC->Gsvolu("META","BOX ",idtmed[1004], par, 3);
3ea9cb08 775//Methane gap
c60862bf 776 par[0]=pcX/2;par[1]=Param()->ProximityGapThickness()/2;par[2]=pcY/2;gMC->Gsvolu("GAP ","BOX ",(*fIdtmed)[kGAP],par,3);
777//CsI PC
778 par[0]=pcX/2;par[1]=.25;par[2]=pcY/2; gMC->Gsvolu("CSI ", "BOX ", (*fIdtmed)[kCSI], par, 3);
3ea9cb08 779//Anode grid
c60862bf 780 par[0] = 0.;par[1] = .001;par[2] = 20.; gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3);
3ea9cb08 781
782//Wire supports
783//Bar of metal
c60862bf 784 par[0]=pcX/2;par[1]=1.05;par[2]=1.05; gMC->Gsvolu("WSMe", "BOX ", idtmed[1009], par, 3);
3ea9cb08 785//Ceramic pick up (base)
c60862bf 786 par[0]=pcX/2;par[1]= .25;par[2]=1.05; gMC->Gsvolu("WSG1", "BOX ", idtmed[1010], par, 3);
3ea9cb08 787//Ceramic pick up (head)
c60862bf 788 par[0] = pcX/2;par[1] = .1;par[2] = .1; gMC->Gsvolu("WSG2", "BOX ", idtmed[1010], par, 3);
3ea9cb08 789
790//Aluminium supports for methane and CsI
791//Short bar
c60862bf 792 par[0]=pcX/2;par[1]=Param()->GapThickness()/2 + .25; par[2] = (68.35 - pcY/2)/2;
3ea9cb08 793 gMC->Gsvolu("SMSH", "BOX", idtmed[1009], par, 3);
794//Long bar
c60862bf 795 par[0]=(66.3 - pcX/2)/2;par[1]=Param()->GapThickness()/2+.25;par[2]=pcY/2+68.35-pcY/2;
3ea9cb08 796 gMC->Gsvolu("SMLG", "BOX", idtmed[1009], par, 3);
797
798//Aluminium supports for freon
799//Short bar
c60862bf 800 par[0] = Param()->QuartzWidth()/2; par[1] = .3; par[2] = (68.35 - Param()->QuartzLength()/2)/2;
3ea9cb08 801 gMC->Gsvolu("SFSH", "BOX", idtmed[1009], par, 3);
802//Long bar
c60862bf 803 par[0] = (66.3 - Param()->QuartzWidth()/2)/2; par[1] = .3;
804 par[2] = Param()->QuartzLength()/2 + 68.35 - Param()->QuartzLength()/2;
3ea9cb08 805 gMC->Gsvolu("SFLG", "BOX", idtmed[1009], par, 3);
806//PCB backplane
c60862bf 807 par[0] = pcX/2;par[1] = .25; par[2] = pcY/4 -.5025; gMC->Gsvolu("PCB ", "BOX", idtmed[1011], par, 3);
3ea9cb08 808
809//Backplane supports
810//Aluminium slab
c60862bf 811 par[0] = 33.15;par[1] = 2;par[2] = 21.65; gMC->Gsvolu("BACK", "BOX", idtmed[1009], par, 3);
3ea9cb08 812//Big hole
c60862bf 813 par[0] = 9.05; par[1] = 2; par[2] = 4.4625; gMC->Gsvolu("BKHL", "BOX", idtmed[1000], par, 3);
3ea9cb08 814//Small hole
c60862bf 815 par[0] = 5.7;par[1] = 2;par[2] = 4.4625; gMC->Gsvolu("BKHS", "BOX", idtmed[1000], par, 3);
3ea9cb08 816//Place holes inside backplane support
817 gMC->Gspos("BKHS", 1, "BACK", .8 + 5.7,0., .6 + 4.4625, 0, "ONLY");
818 gMC->Gspos("BKHS", 2, "BACK", -.8 - 5.7,0., .6 + 4.4625, 0, "ONLY");
819 gMC->Gspos("BKHS", 3, "BACK", .8 + 5.7,0., -.6 - 4.4625, 0, "ONLY");
820 gMC->Gspos("BKHS", 4, "BACK", -.8 - 5.7,0., -.6 - 4.4625, 0, "ONLY");
821 gMC->Gspos("BKHS", 5, "BACK", .8 + 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
822 gMC->Gspos("BKHS", 6, "BACK", -.8 - 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
823 gMC->Gspos("BKHS", 7, "BACK", .8 + 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
824 gMC->Gspos("BKHS", 8, "BACK", -.8 - 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
825 gMC->Gspos("BKHL", 1, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., .6 + 4.4625, 0, "ONLY");
826 gMC->Gspos("BKHL", 2, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 4.4625, 0, "ONLY");
827 gMC->Gspos("BKHL", 3, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 4.4625, 0, "ONLY");
828 gMC->Gspos("BKHL", 4, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 4.4625, 0, "ONLY");
829 gMC->Gspos("BKHL", 5, "BACK", .8 + 11.4+ 1.6 + 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
830 gMC->Gspos("BKHL", 6, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
831 gMC->Gspos("BKHL", 7, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
832 gMC->Gspos("BKHL", 8, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
833//Place material inside RICH
834 gMC->Gspos("SRIC", 1, "RICH", 0.,0., 0., 0, "ONLY");
c60862bf 835 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");
836 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");
837 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");
838 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");
839 gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.025, 0., 0, "ONLY");
840 gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .188, 0., 0, "ONLY");
841 gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .025, 0., 0, "ONLY");
842 gMC->Gspos("FOOT", 1, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
843 gMC->Gspos("FOOT", 2, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3 , 36.9, 0, "ONLY");
844 gMC->Gspos("FOOT", 3, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
845 gMC->Gspos("FOOT", 4, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
846 gMC->Gspos("FOOT", 5, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
847 gMC->Gspos("FOOT", 6, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
848 gMC->Gspos("FOOT", 7, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
849 gMC->Gspos("FOOT", 8, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
850 gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .2, 0., 0, "ONLY");
3ea9cb08 851// Methane supports
c60862bf 852 gMC->Gspos("SMLG", 1, "SRIC", pcX/2 + (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
853 gMC->Gspos("SMLG", 2, "SRIC", - pcX/2 - (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
854 gMC->Gspos("SMSH", 1, "SRIC", 0., 1.276 + .25, pcY/2 + (68.35 - pcY/2)/2, 0, "ONLY");
855 gMC->Gspos("SMSH", 2, "SRIC", 0., 1.276 + .25, - pcY/2 - (68.35 - pcY/2)/2, 0, "ONLY");
3ea9cb08 856//Freon supports
c60862bf 857 Float_t supp_y = 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness() - .2 + .3; //y position of freon supports
858 gMC->Gspos("SFLG", 1, "SRIC", Param()->QuartzWidth()/2 + (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
859 gMC->Gspos("SFLG", 2, "SRIC", - Param()->QuartzWidth()/2 - (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
860 gMC->Gspos("SFSH", 1, "SRIC", 0., supp_y, Param()->QuartzLength()/2 + (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
861 gMC->Gspos("SFSH", 2, "SRIC", 0., supp_y, - Param()->QuartzLength()/2 - (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
3ea9cb08 862 AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.);
863//Place spacers
864 Int_t nspacers = 30;
865 for (i = 0; i < nspacers/3; i++) {
866 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
867 gMC->Gspos("SPAC", i, "FRE1", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
868 }
869 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
870 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
871 gMC->Gspos("SPAC", i, "FRE1", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
872 }
873 for (i = (nspacers*2)/3; i < nspacers; ++i) {
874 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
875 gMC->Gspos("SPAC", i, "FRE1", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
876 }
877 for (i = 0; i < nspacers/3; i++) {
878 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
879 gMC->Gspos("SPAC", i, "FRE2", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
880 }
881 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
882 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
883 gMC->Gspos("SPAC", i, "FRE2", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
884 }
885 for (i = (nspacers*2)/3; i < nspacers; ++i) {
886 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
887 gMC->Gspos("SPAC", i, "FRE2", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
888 }
889 gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
890 gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
c60862bf 891 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)
892 gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings
893 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)
894 gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness()/2, 0., 0, "ONLY");
895 gMC->Gspos("GAP ", 1, "META", 0., Param()->GapThickness()/2 - Param()->ProximityGapThickness()/2 - 0.0001, 0., 0, "ONLY");
3ea9cb08 896 gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
c60862bf 897 gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + Param()->GapThickness()/2 + .25, 0., 0, "ONLY");
3ea9cb08 898//Wire support placing
c60862bf 899 gMC->Gspos("WSG2", 1, "GAP ", 0., Param()->ProximityGapThickness()/2 - .1, 0., 0, "ONLY");
3ea9cb08 900 gMC->Gspos("WSG1", 1, "CSI ", 0., 0., 0., 0, "ONLY");
c60862bf 901 gMC->Gspos("WSMe", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, 0., 0, "ONLY");
3ea9cb08 902//Backplane placing
c60862bf 903 gMC->Gspos("BACK", 1, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 43.3, 0, "ONLY");
904 gMC->Gspos("BACK", 2, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2 , 43.3, 0, "ONLY");
905 gMC->Gspos("BACK", 3, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
906 gMC->Gspos("BACK", 4, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
907 gMC->Gspos("BACK", 5, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
908 gMC->Gspos("BACK", 6, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
3ea9cb08 909//PCB placing
c60862bf 910 gMC->Gspos("PCB ", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, pcX/4 + .5025 + 2.5, 0, "ONLY");
911 gMC->Gspos("PCB ", 2, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, -pcX/4 - .5025 - 2.5, 0, "ONLY");
3ea9cb08 912
913//place chambers into mother volume ALIC
543d5224 914 CreateChambers();
c021cb15 915 for(int i=1;i<=kNCH;i++){
3ea9cb08 916 AliMatrix(idrotm[1000+i],C(i)->ThetaXd(),C(i)->PhiXd(),
917 C(i)->ThetaYd(),C(i)->PhiYd(),
918 C(i)->ThetaZd(),C(i)->PhiZd());
c021cb15 919 gMC->Gspos("RICH",i,"ALIC",C(i)->X(),C(i)->Y(),C(i)->Z(),idrotm[1000+i], "ONLY");
3ea9cb08 920 }
921
922 if(GetDebug())Info("CreateGeometry","Stop.");
923}//void AliRICH::CreateGeometry()
c60862bf 924//__________________________________________________________________________________________________
3ea9cb08 925void AliRICH::CreateChambers()
543d5224 926{//create all RICH Chambers on each call. Previous chambers deleted
927 if(fChambers) delete fChambers;
c60862bf 928 if(GetDebug())Info("CreateChambers","Creating RICH chambers.");
3ea9cb08 929 fChambers=new TObjArray(kNCH);
930 fChambers->SetOwner();
c60862bf 931 for(int i=0;i<kNCH;i++) fChambers->AddAt(new AliRICHChamber(i+1,Param()),i);
3ea9cb08 932}//void AliRICH::CreateChambers()
c021cb15 933//__________________________________________________________________________________________________
c60862bf 934void AliRICH::GenerateFeedbacks(Int_t iChamber,Float_t eloss)
c021cb15 935{// Generate FeedBack photons
936 Int_t j;
937 Float_t cthf, phif, enfp = 0, sthf;
938 Float_t e1[3], e2[3], e3[3];
939 Float_t vmod, uswop;
940 Float_t dir[3], phi;
941 Float_t pol[3], mom[4];
942//Determine number of feedback photons
943 TLorentzVector x4;
c60862bf 944 gMC->TrackPosition(x4);
945 Float_t charge=Param()->TotalCharge(gMC->TrackPid(),eloss,C(iChamber)->G2Ly(x4));//Total Charge
c021cb15 946 Int_t iNphotons=gMC->GetRandom()->Poisson(Param()->AlphaFeedback()*charge);
947 Info("GenerateFeedbacks","N photons=%i",iNphotons);
948//Generate photons
949 for(Int_t i=0;i<iNphotons;i++){
950 Double_t ranf[2];
951 gMC->GetRandom()->RndmArray(2,ranf); //Sample direction
952 cthf=ranf[0]*2-1.0;
953 if(cthf<0) continue;
954 sthf = TMath::Sqrt((1 - cthf) * (1 + cthf));
955 phif = ranf[1] * 2 * TMath::Pi();
956
957 if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57)
958 enfp = 7.5e-9;
959 else if(randomNumber<=0.7)
960 enfp = 6.4e-9;
961 else
962 enfp = 7.9e-9;
963
964
965 dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif);
966 gMC->Gdtom(dir, mom, 2);
967 mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp;
968 mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]);
969
970 // Polarisation
971 e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1];
972 e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0;
973 e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0];
974
975 vmod=0;
976 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
977 if (!vmod) for(j=0;j<3;j++) {
978 uswop=e1[j];
979 e1[j]=e3[j];
980 e3[j]=uswop;
981 }
982 vmod=0;
983 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
984 if (!vmod) for(j=0;j<3;j++) {
985 uswop=e2[j];
986 e2[j]=e3[j];
987 e3[j]=uswop;
988 }
989
990 vmod=0;
991 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
992 vmod=TMath::Sqrt(1/vmod);
993 for(j=0;j<3;j++) e1[j]*=vmod;
994
995 vmod=0;
996 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
997 vmod=TMath::Sqrt(1/vmod);
998 for(j=0;j<3;j++) e2[j]*=vmod;
999
1000 phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi();
1001 for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi);
1002 gMC->Gdtom(pol, pol, 2);
1003 Int_t outputNtracksStored;
1004 gAlice->PushTrack(1, //do not transport
1005 gAlice->GetCurrentTrackNumber(),//parent track
1006 kFeedback, //PID
1007 mom[0],mom[1],mom[2],mom[3], //track momentum
1008 x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin
1009 pol[0],pol[1],pol[2], //polarization
1010 kPFeedBackPhoton,outputNtracksStored,1.0);
1011
1012 }
1013}//Int_t AliRICH::FeedBackPhotons()
1014//__________________________________________________________________________________________________