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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>
116cbefd 17#include <TBRIK.h>
237c933d 18#include <TFile.h>
94de3818 19#include <TGeometry.h>
116cbefd 20#include <TNode.h>
21#include <TObjArray.h>
22#include <TObject.h>
23#include <TParticle.h>
24#include <TPDGCode.h>
25#include <TRandom.h>
116cbefd 26#include <TTUBE.h>
27#include <TTree.h>
28#include <TVector.h>
c60862bf 29#include <AliMagF.h>
30#include <AliPoints.h>
fe4da5cc 31#include "AliRICH.h"
c021cb15 32#include "AliRICHParam.h"
116cbefd 33#include "AliRICHClusterFinder.h"
237c933d 34#include "AliRICHRawCluster.h"
a4622d0f 35#include "AliRICHRecHit1D.h"
36#include "AliRICHRecHit3D.h"
116cbefd 37#include "AliRICHSegmentationV0.h"
38#include "AliRICHTransientDigit.h"
c60862bf 39#include <AliRun.h>
40#include <AliRunDigitizer.h>
c021cb15 41#include "AliRICHSegmentationV1.h"
42#include "AliRICHResponseV0.h"
ddae0931 43
853634d3 44ClassImp(AliRICHhit)
c60862bf 45//__________________________________________________________________________________________________
46void AliRICHhit::Print(Option_t*)const
47{
48 Info("","chamber=%2i, PID=%9i, TID=%6i, eloss=%9.3f eV",fChamber,fPid,fTrack,fEloss*1e9);
49}//void AliRICHdigit::Print(Option_t *option)const
50//__________________________________________________________________________________________________
853634d3 51ClassImp(AliRICHdigit)
c60862bf 52//__________________________________________________________________________________________________
53void AliRICHdigit::Print(Option_t*)const
54{
55 Info("","ID=%6i, chamber=%2i, PadX=%3i, PadY=%3i, Qdc=%4i, TID1=%5i, TID2=%5i, TID3=%5i",
56 Id(),fChamber,fPadX,fPadY,fQdc,fTracks[0],fTracks[1],fTracks[2]);
57}//void AliRICHdigit::Print(Option_t *option)const
58//__________________________________________________________________________________________________
59
60ClassImp(AliRICH)
61//__________________________________________________________________________________________________
15d8311d 62// RICH manager class
c60862bf 63//BEGIN_HTML
15d8311d 64/*
65 <img src="gif/alirich.gif">
66*/
c60862bf 67//END_HTML
68//__________________________________________________________________________________________________
fe4da5cc 69AliRICH::AliRICH()
c60862bf 70 :AliDetector()
dfb4e77d 71{//Default ctor should not contain any new operators
c60862bf 72 fpParam =0;
73 fChambers =0;
74
75
76 //AliDetector ctor deals with Hits and Digits
77
78 fSdigits =0; fNsdigits =0;
79 fDigitsNew =0; for(int i=0;i<kNCH;i++) fNdigitsNew[i] =0;
80 fClusters =0; for(int i=0;i<kNCH;i++) fNclusters[i]=0;
81
82 fCerenkovs =0; fNcerenkovs =0;
83 fSpecials =0; fNspecials =0;
84 fDchambers =0; for(int i=0;i<kNCH;i++) fNdch[i]=0;
85 fRecHits1D =0; for(int i=0;i<kNCH;i++) fNrechits1D[i]=0;
86 fRecHits3D =0; for(int i=0;i<kNCH;i++) fNrechits3D[i]=0;
87 fRawClusters=0; for(int i=0;i<kNCH;i++) fNrawch[i]=0;
15d8311d 88}//AliRICH::AliRICH()
c021cb15 89//__________________________________________________________________________________________________
fe4da5cc 90AliRICH::AliRICH(const char *name, const char *title)
dfb4e77d 91 :AliDetector(name,title)
92{//Named ctor
93 if(GetDebug())Info("named ctor","Start.");
c60862bf 94 fpParam = new AliRICHParam;
95 fChambers = 0; CreateChambers();
c021cb15 96
c60862bf 97 //AliDetector ctor deals with Hits and Digits (reset them to 0, does not create them)
98 fHits= 0; CreateHits(); gAlice->AddHitList(fHits);
99 fSdigits= 0;
100 fDigitsNew= 0;
101 fClusters= 0;
102
103 fCerenkovs= 0; CreateCerenkovsOld(); gAlice->AddHitList(fCerenkovs);
104 fSpecials= 0; CreateSpecialsOld();
105 fDchambers= 0; //CreateDigitsOld();
106 fRawClusters=0; //CreateRawClustersOld();
107 fRecHits1D= 0; //CreateRecos1Old();
108 fRecHits3D= 0; //CreateRecos3Old();
109
110 fCkovNumber=fFreonProd=0;
dfb4e77d 111 if(GetDebug())Info("named ctor","Stop.");
112}//AliRICH::AliRICH(const char *name, const char *title)
c021cb15 113//__________________________________________________________________________________________________
fe4da5cc 114AliRICH::~AliRICH()
dfb4e77d 115{//dtor
116 if(GetDebug()) Info("dtor","Start.");
237c933d 117
c60862bf 118 if(fpParam) delete fpParam;
119 if(fChambers) delete fChambers;
120
121 if(fHits) delete fHits;
122 if(fSdigits) delete fSdigits;
123 if(fDigits) delete fDigits;
124 if(fDigitsNew) {fDigitsNew->Delete(); delete fDigitsNew;}
125 if(fClusters) {fClusters->Delete(); delete fClusters;}
126
127 if(fCerenkovs) delete fCerenkovs;
128 if(fSpecials) delete fSpecials;
129 if(fDchambers) {fDchambers->Delete(); delete fDchambers;}
130 if(fRawClusters) {fRawClusters->Delete(); delete fRawClusters;}
131 if(fRecHits1D) {fRecHits1D->Delete(); delete fRecHits1D;}
132 if(fRecHits3D) {fRecHits3D->Delete(); delete fRecHits3D;}
dfb4e77d 133 if(GetDebug()) Info("dtor","Stop.");
134}//AliRICH::~AliRICH()
c021cb15 135//__________________________________________________________________________________________________
3ea9cb08 136void AliRICH::Hits2SDigits()
c60862bf 137{//Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
3ea9cb08 138 if(GetDebug()) Info("Hit2SDigits","Start.");
853634d3 139
853634d3 140 if(GetDebug()) Info("Hit2SDigits","Stop.");
c021cb15 141}//void AliRICH::Hits2SDigits()
142//__________________________________________________________________________________________________
dfb4e77d 143void AliRICH::SDigits2Digits()
144{//Generate digits from sdigits.
145 if(GetDebug()) Info("SDigits2Digits","Start.");
c021cb15 146
dfb4e77d 147 if(GetDebug()) Info("SDigits2Digits","Stop.");
148}//void AliRICH::SDigits2Digits()
c021cb15 149//__________________________________________________________________________________________________
34ead2dd 150void AliRICH::Digits2Reco()
c60862bf 151{//Generate clusters from digits then generate recos from clusters or digits
152 if(GetDebug()) Info("Digits2reco","Start.");
34ead2dd 153
dfb4e77d 154}//void AliRICH::Digits2Reco()
c021cb15 155//__________________________________________________________________________________________________
2e5f0f7b 156void AliRICH::AddRawCluster(Int_t id, const AliRICHRawCluster& c)
dfb4e77d 157{// Add a RICH digit to the list
15d8311d 158
2682e810 159 TClonesArray &lrawcl = *((TClonesArray*)fRawClusters->At(id));
2e5f0f7b 160 new(lrawcl[fNrawch[id]++]) AliRICHRawCluster(c);
fe4da5cc 161}
2e5f0f7b 162//_____________________________________________________________________________
a4622d0f 163void AliRICH::AddRecHit1D(Int_t id, Float_t *rechit, Float_t *photons, Int_t *padsx, Int_t* padsy)
dfb4e77d 164{// Add a RICH reconstructed hit to the list
a4622d0f 165
2682e810 166 TClonesArray &lrec1D = *((TClonesArray*)fRecHits1D->At(id));
a4622d0f 167 new(lrec1D[fNrechits1D[id]++]) AliRICHRecHit1D(id,rechit,photons,padsx,padsy);
168}
a4622d0f 169//_____________________________________________________________________________
fb498b56 170void AliRICH::AddRecHit3D(Int_t id, Float_t *rechit, Float_t omega, Float_t theta, Float_t phi)
dfb4e77d 171{// Add a RICH reconstructed hit to the list
fe4da5cc 172
2682e810 173 TClonesArray &lrec3D = *((TClonesArray*)fRecHits3D->At(id));
fb498b56 174 new(lrec3D[fNrechits3D[id]++]) AliRICHRecHit3D(id,rechit,omega,theta,phi);
2e5f0f7b 175}
dfb4e77d 176//______________________________________________________________________________
177void AliRICH::BuildGeometry()
3ea9cb08 178{//Builds a TNode geometry for event display
dfb4e77d 179 if(GetDebug())Info("BuildGeometry","Start.");
237c933d 180
3ea9cb08 181 TNode *node, *subnode, *top;
182 top=gAlice->GetGeometry()->GetNode("alice");
c24372d0 183
3ea9cb08 184 new TBRIK("S_RICH","S_RICH","void",71.09999,11.5,73.15);
53d98323 185
c60862bf 186 Float_t wid=Param()->SectorSizeX();
187 Float_t len=Param()->SectorSizeY();
3ea9cb08 188 new TBRIK("PHOTO","PHOTO","void",wid/2,0.1,len/2);
189
c021cb15 190 for(int i=1;i<=kNCH;i++){
237c933d 191 top->cd();
c021cb15 192 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 193 node->SetLineColor(kRed);
91975aa2 194 node->cd();
c60862bf 195 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 196 subnode->SetLineColor(kGreen);
197 fNodes->Add(subnode);
c60862bf 198 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,len/2+Param()->DeadZone()/2,"");
91975aa2 199 subnode->SetLineColor(kGreen);
200 fNodes->Add(subnode);
c60862bf 201 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,len/2+Param()->DeadZone()/2,"");
91975aa2 202 subnode->SetLineColor(kGreen);
203 fNodes->Add(subnode);
c60862bf 204 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",wid+Param()->DeadZone(),5,-len/2-Param()->DeadZone()/2,"");
91975aa2 205 subnode->SetLineColor(kGreen);
206 fNodes->Add(subnode);
c60862bf 207 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-len/2 -Param()->DeadZone()/2,"");
91975aa2 208 subnode->SetLineColor(kGreen);
209 fNodes->Add(subnode);
c60862bf 210 subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-wid-Param()->DeadZone(),5,-len/2 - Param()->DeadZone()/2,"");
91975aa2 211 subnode->SetLineColor(kGreen);
212 fNodes->Add(subnode);
237c933d 213 fNodes->Add(node);
3ea9cb08 214 }
dfb4e77d 215 if(GetDebug())Info("BuildGeometry","Stop.");
216}//void AliRICH::BuildGeometry()
c60862bf 217
218static Int_t kCSI=6;
219static Int_t kGAP=9;
dfb4e77d 220//______________________________________________________________________________
452a64c6 221void AliRICH::CreateMaterials()
222{
223 //
224 // *** DEFINITION OF AVAILABLE RICH MATERIALS ***
225 // ORIGIN : NICK VAN EIJNDHOVEN
226 // Modified by: N. Colonna (INFN - BARI, Nicola.Colonna@ba.infn.it)
227 // R.A. Fini (INFN - BARI, Rosanna.Fini@ba.infn.it)
228 // R.A. Loconsole (Bari University, loco@riscom.ba.infn.it)
229 //
452a64c6 230 Int_t i;
452a64c6 231
452a64c6 232 //Photons energy intervals
233 Float_t ppckov[26];
234 for (i=0;i<26;i++)
235 {
236 ppckov[i] = (Float_t(i)*0.1+5.5)*1e-9;
452a64c6 237 }
238
239
240 //Refraction index for quarz
241 Float_t rIndexQuarz[26];
242 Float_t e1= 10.666;
243 Float_t e2= 18.125;
244 Float_t f1= 46.411;
245 Float_t f2= 228.71;
246 for (i=0;i<26;i++)
247 {
248 Float_t ene=ppckov[i]*1e9;
249 Float_t a=f1/(e1*e1 - ene*ene);
250 Float_t b=f2/(e2*e2 - ene*ene);
251 rIndexQuarz[i] = TMath::Sqrt(1. + a + b );
452a64c6 252 }
253
254 //Refraction index for opaque quarz, methane and grid
255 Float_t rIndexOpaqueQuarz[26];
256 Float_t rIndexMethane[26];
257 Float_t rIndexGrid[26];
258 for (i=0;i<26;i++)
259 {
260 rIndexOpaqueQuarz[i]=1;
261 rIndexMethane[i]=1.000444;
262 rIndexGrid[i]=1;
452a64c6 263 }
264
265 //Absorption index for freon
266 Float_t abscoFreon[26] = {179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987,
267 179.0987, 142.9206, 56.64957, 25.58622, 13.95293, 12.03905, 10.42953, 8.804196,
268 7.069031, 4.461292, 2.028366, 1.293013, .577267, .40746, .334964, 0., 0., 0.};
269
452a64c6 270
271 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,
272 19.266, 17.525, 15.878, 14.177, 11.719, 9.282, 6.62, 4.0925, 2.601, 1.149, .667, .3627,
273 .192, .1497, .10857};
274
275 //Absorption index for methane
276 Float_t abscoMethane[26];
277 for (i=0;i<26;i++)
278 {
279 abscoMethane[i]=AbsoCH4(ppckov[i]*1e9);
452a64c6 280 }
281
282 //Absorption index for opaque quarz, csi and grid, efficiency for all and grid
283 Float_t abscoOpaqueQuarz[26];
284 Float_t abscoCsI[26];
285 Float_t abscoGrid[26];
286 Float_t efficAll[26];
287 Float_t efficGrid[26];
288 for (i=0;i<26;i++)
289 {
290 abscoOpaqueQuarz[i]=1e-5;
291 abscoCsI[i]=1e-4;
292 abscoGrid[i]=1e-4;
293 efficAll[i]=1;
294 efficGrid[i]=1;
452a64c6 295 }
296
297 //Efficiency for csi
298
299 Float_t efficCsI[26] = {0.000199999995, 0.000600000028, 0.000699999975, 0.00499999989, 0.00749999983, 0.010125,
300 0.0242999997, 0.0405000001, 0.0688500032, 0.105299994, 0.121500008, 0.141749993, 0.157949999,
301 0.162, 0.166050002, 0.167669997, 0.174299985, 0.176789999, 0.179279998, 0.182599992, 0.18592,
302 0.187579989, 0.189239994, 0.190899998, 0.207499996, 0.215799987};
303
304
305
306 //FRESNEL LOSS CORRECTION FOR PERPENDICULAR INCIDENCE AND
307 //UNPOLARIZED PHOTONS
308
309 for (i=0;i<26;i++)
310 {
311 efficCsI[i] = efficCsI[i]/(1.-Fresnel(ppckov[i]*1e9,1.,0));
452a64c6 312 }
313
314 /*******************************************End of rich_media.f***************************************/
452a64c6 315
c60862bf 316 Float_t rIndexFreon[26];
452a64c6 317
452a64c6 318
452a64c6 319 // --- Photon energy (GeV)
320 // --- Refraction indexes
321 for (i = 0; i < 26; ++i) {
322 rIndexFreon[i] = ppckov[i] * .0172 * 1e9 + 1.177;
323 //rIndexFreon[i] = 1;
452a64c6 324 }
325
c60862bf 326
327 Float_t a=0,z=0,den=0,radl=0,absl=0;
328 Float_t tmaxfd=-10.0, deemax=-0.2, stemax=-0.1,epsil=0.001, stmin=-0.001;
329 Int_t isxfld = gAlice->Field()->Integ();
330 Float_t sxmgmx = gAlice->Field()->Max();
452a64c6 331
c60862bf 332 AliMaterial( 1, "Air $",a=14.61,z=7.3, den=0.001205,radl=30420.0,absl=67500);//(Air)
333 AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
452a64c6 334
c60862bf 335 AliMaterial( 6, "HON", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //(C)-equivalent radl
336 AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
337
338 AliMaterial(16, "CSI", a=12.01,z=6.0, den=0.1, radl=18.8, absl=0); //CsI-radl equivalent
339 AliMedium(kCSI, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
340
341 AliMaterial(11, "GRI", a=63.54,z=29.0,den=8.96, radl=1.43, absl=0); //anode grid (Cu)
342 AliMedium(7, "GRIGLIA$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
343
344 AliMaterial(50, "ALUM", a=26.98,z=13.0,den=2.7, radl=8.9, absl=0); //aluminium sheet (Al)
345 AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
346
347 AliMaterial(31, "COPPER$", a=63.54,z=29.0,den=8.96, radl=1.4, absl=0); //(Cu)
348 AliMedium(12, "PCB_COPPER", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
349
350 Float_t aQuartz[2]={28.09,16.0}; Float_t zQuartz[2]={14.00, 8.0}; Float_t wmatQuartz[2]={1,2};
351 AliMixture (20, "QUA",aQuartz,zQuartz,den=2.64,-2, wmatQuartz);//Quarz (SiO2) - trasnparent
352 AliMedium(3, "QUARZO$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
353
354 AliMixture (21, "QUAO",aQuartz, zQuartz, den=2.64, -2, wmatQuartz);//Quarz (SiO2) - opaque
355 AliMedium(8, "QUARZOO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
356
357 Float_t aFreon[2]={12,19}; Float_t zFreon[2]={6,9}; Float_t wmatFreon[2]={6,14};
358 AliMixture (30, "FRE",aFreon,zFreon,den=1.7,-2,wmatFreon);//Freon (C6F14)
359 AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
360
361 Float_t aMethane[2]={12.01,1}; Float_t zMethane[2]={6,1}; Float_t wmatMethane[2]={1,4};
362 AliMixture (40, "MET", aMethane, zMethane, den=7.17e-4,-2, wmatMethane);//methane (CH4)
363 AliMedium(5, "METANO$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
364
365 AliMixture (41, "METG", aMethane, zMethane, den=7.17e-4, -2, wmatMethane);
366 AliMedium(kGAP, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, 0.1, -deemax, epsil, -stmin);
367
368 Float_t aGlass[5]={12.01, 28.09, 16., 10.8, 23.};
369 Float_t zGlass[5]={ 6., 14., 8., 5., 11.};
370 Float_t wGlass[5]={ 0.5, 0.105, 0.355, 0.03, 0.01};
371 AliMixture (32, "GLASS",aGlass, zGlass, den=1.74, 5, wGlass);//Glass 50%C+10.5%Si+35.5%O+3% + 1%
372 AliMedium(11, "GLASS", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
373
374 Int_t *idtmed = fIdtmed->GetArray()-999;
375 gMC->SetCerenkov(idtmed[1000], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
376 gMC->SetCerenkov(idtmed[1001], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
377 gMC->SetCerenkov(idtmed[1002], 26, ppckov, abscoQuarz, efficAll, rIndexQuarz);
378 gMC->SetCerenkov(idtmed[1003], 26, ppckov, abscoFreon, efficAll, rIndexFreon);
379 gMC->SetCerenkov(idtmed[1004], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
380 gMC->SetCerenkov(idtmed[1005], 26, ppckov, abscoCsI, efficCsI, rIndexMethane);
381 gMC->SetCerenkov(idtmed[1006], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
382 gMC->SetCerenkov(idtmed[1007], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
383 gMC->SetCerenkov(idtmed[1008], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
384 gMC->SetCerenkov(idtmed[1009], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
385 gMC->SetCerenkov(idtmed[1010], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
386}//void AliRICH::CreateMaterials()
c021cb15 387//__________________________________________________________________________________________________
452a64c6 388Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
389{
390
391 //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
392
393 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,
394 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,
395 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
452a64c6 396 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
397 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
398 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
399 1.72,1.53};
452a64c6 400 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
401 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
402 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
403 1.714,1.498};
404 Float_t xe=ene;
405 Int_t j=Int_t(xe*10)-49;
406 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
407 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
408
409 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
410 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
411
412 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
413 Float_t tanin=sinin/pdoti;
414
415 Float_t c1=cn*cn-ck*ck-sinin*sinin;
416 Float_t c2=4*cn*cn*ck*ck;
417 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
418 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
419
420 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
421 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
422
423
424 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
425 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
426
427 Float_t sigraf=18.;
428 Float_t lamb=1240/ene;
429 Float_t fresn;
430
431 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
432
433 if(pola)
434 {
435 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
436 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
437 }
438 else
439 fresn=0.5*(rp+rs);
440
441 fresn = fresn*rO;
442 return(fresn);
c021cb15 443}//Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
444//__________________________________________________________________________________________________
452a64c6 445Float_t AliRICH::AbsoCH4(Float_t x)
446{
447
448 //KLOSCH,SCH4(9),WL(9),EM(9),ALENGTH(31)
449 Float_t sch4[9] = {.12,.16,.23,.38,.86,2.8,7.9,28.,80.}; //MB X 10^22
450 //Float_t wl[9] = {153.,152.,151.,150.,149.,148.,147.,146.,145};
451 Float_t em[9] = {8.1,8.158,8.212,8.267,8.322,8.378,8.435,8.493,8.55};
452 const Float_t kLosch=2.686763E19; // LOSCHMIDT NUMBER IN CM-3
453 const Float_t kIgas1=100, kIgas2=0, kOxy=10., kWater=5., kPressure=750.,kTemperature=283.;
454 Float_t pn=kPressure/760.;
455 Float_t tn=kTemperature/273.16;
456
457
458// ------- METHANE CROSS SECTION -----------------
459// ASTROPH. J. 214, L47 (1978)
460
461 Float_t sm=0;
462 if (x<7.75)
463 sm=.06e-22;
464
465 if(x>=7.75 && x<=8.1)
466 {
467 Float_t c0=-1.655279e-1;
468 Float_t c1=6.307392e-2;
469 Float_t c2=-8.011441e-3;
470 Float_t c3=3.392126e-4;
471 sm=(c0+c1*x+c2*x*x+c3*x*x*x)*1.e-18;
472 }
473
474 if (x> 8.1)
475 {
476 Int_t j=0;
477 while (x<=em[j] && x>=em[j+1])
478 {
479 j++;
480 Float_t a=(sch4[j+1]-sch4[j])/(em[j+1]-em[j]);
481 sm=(sch4[j]+a*(x-em[j]))*1e-22;
482 }
483 }
484
485 Float_t dm=(kIgas1/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
486 Float_t abslm=1./sm/dm;
487
488// ------- ISOBUTHANE CROSS SECTION --------------
489// i-C4H10 (ai) abs. length from curves in
490// Lu-McDonald paper for BARI RICH workshop .
491// -----------------------------------------------------------
492
493 Float_t ai;
494 Float_t absli;
495 if (kIgas2 != 0)
496 {
497 if (x<7.25)
498 ai=100000000.;
499
500 if(x>=7.25 && x<7.375)
501 ai=24.3;
502
503 if(x>=7.375)
504 ai=.0000000001;
505
506 Float_t si = 1./(ai*kLosch*273.16/293.); // ISOB. CRO.SEC.IN CM2
507 Float_t di=(kIgas2/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
508 absli =1./si/di;
509 }
510 else
511 absli=1.e18;
512// ---------------------------------------------------------
513//
514// transmission of O2
515//
516// y= path in cm, x=energy in eV
517// so= cross section for UV absorption in cm2
518// do= O2 molecular density in cm-3
519// ---------------------------------------------------------
520
521 Float_t abslo;
522 Float_t so=0;
523 if(x>=6.0)
524 {
525 if(x>=6.0 && x<6.5)
526 {
527 so=3.392709e-13 * TMath::Exp(2.864104 *x);
528 so=so*1e-18;
529 }
530
531 if(x>=6.5 && x<7.0)
532 {
533 so=2.910039e-34 * TMath::Exp(10.3337*x);
534 so=so*1e-18;
535 }
536
537
538 if (x>=7.0)
539 {
540 Float_t a0=-73770.76;
541 Float_t a1=46190.69;
542 Float_t a2=-11475.44;
543 Float_t a3=1412.611;
544 Float_t a4=-86.07027;
545 Float_t a5=2.074234;
546 so= a0+(a1*x)+(a2*x*x)+(a3*x*x*x)+(a4*x*x*x*x)+(a5*x*x*x*x*x);
547 so=so*1e-18;
548 }
549
550 Float_t dox=(kOxy/1e6)*kLosch*pn/tn;
551 abslo=1./so/dox;
552 }
553 else
554 abslo=1.e18;
555// ---------------------------------------------------------
556//
557// transmission of H2O
558//
559// y= path in cm, x=energy in eV
560// sw= cross section for UV absorption in cm2
561// dw= H2O molecular density in cm-3
562// ---------------------------------------------------------
563
564 Float_t abslw;
565
dfb4e77d 566 Float_t b0=29231.65;
567 Float_t b1=-15807.74;
568 Float_t b2=3192.926;
569 Float_t b3=-285.4809;
570 Float_t b4=9.533944;
452a64c6 571
dfb4e77d 572 if(x>6.75)
573 {
574 Float_t sw= b0+(b1*x)+(b2*x*x)+(b3*x*x*x)+(b4*x*x*x*x);
575 sw=sw*1e-18;
576 Float_t dw=(kWater/1e6)*kLosch*pn/tn;
577 abslw=1./sw/dw;
578 }
579 else
580 abslw=1.e18;
581
582// ---------------------------------------------------------
452a64c6 583
dfb4e77d 584 Float_t alength=1./(1./abslm+1./absli+1./abslo+1./abslw);
585 return (alength);
586}
c021cb15 587//__________________________________________________________________________________________________
dfb4e77d 588void AliRICH::MakeBranch(Option_t* option)
589{//Create Tree branches for the RICH.
590 if(GetDebug())Info("MakeBranch","Start with option= %s.",option);
591
592 const Int_t kBufferSize = 4000;
dfb4e77d 593
dfb4e77d 594 const char *cH = strstr(option,"H");
595 const char *cD = strstr(option,"D");
596 const char *cR = strstr(option,"R");
597 const char *cS = strstr(option,"S");
598
c60862bf 599 if(cH&&TreeH()){//H
600 CreateHits(); //branch will be created in AliDetector::MakeBranch
601 CreateCerenkovsOld(); MakeBranchInTree(TreeH(),"RICHCerenkov", &fCerenkovs, kBufferSize,0);
602 CreateSpecialsOld(); MakeBranchInTree(TreeH(),"RICHSpecials", &fSpecials,kBufferSize,0);
603 }//H
dfb4e77d 604 AliDetector::MakeBranch(option);//this is after cH because we need to guarantee that fHits array is created
605
c60862bf 606 if(cS&&fLoader->TreeS()){//S
607 CreateSdigits(); MakeBranchInTree(fLoader->TreeS(),"RICH",&fSdigits,kBufferSize,0) ;
608 }//S
dfb4e77d 609
c60862bf 610 if(cD&&fLoader->TreeD()){//D
611 CreateDigitsOld();
612 for(int i=0;i<kNCH;i++)
613 MakeBranchInTree(fLoader->TreeD(),Form("%sDigits%d",GetName(),i+1),&((*fDchambers)[i]),kBufferSize,0);
614 }//D
615
616 if(cR&&fLoader->TreeR()){//R
617 CreateRawClustersOld();
618 for(int i=0; i<kNCH ;i++)
619 MakeBranchInTree(fLoader->TreeR(),Form("%sRawClusters%d",GetName(),i+1), &((*fRawClusters)[i]), kBufferSize, 0);
620
621 CreateRecos1Old();
622 for(int i=0; i<kNCH ;i++)
623 MakeBranchInTree(fLoader->TreeR(),Form("%sRecHits1D%d",GetName(),i+1),&((*fRecHits1D)[i]),kBufferSize,0);
624
625 CreateRecos3Old();
626 for(int i=0; i<kNCH ;i++)
627 MakeBranchInTree(fLoader->TreeR(),Form("%sRecHits3D%d",GetName(),i+1), &((*fRecHits3D)[i]), kBufferSize, 0);
628 }//R
dfb4e77d 629 if(GetDebug())Info("MakeBranch","Stop.");
c021cb15 630}//void AliRICH::MakeBranch(Option_t* option)
c60862bf 631//__________________________________________________________________________________________________
dfb4e77d 632void AliRICH::SetTreeAddress()
633{//Set branch address for the Hits and Digits Tree.
634 if(GetDebug())Info("SetTreeAddress","Start.");
c60862bf 635
dfb4e77d 636 TBranch *branch;
dfb4e77d 637
c60862bf 638 if(fLoader->TreeH()){//H
853634d3 639 if(GetDebug())Info("SetTreeAddress","tree H is requested.");
c60862bf 640 CreateHits();//branch map will be in AliDetector::SetTreeAddress
641 branch=fLoader->TreeH()->GetBranch("RICHCerenkov"); if(branch){CreateCerenkovsOld(); branch->SetAddress(&fCerenkovs);}
642 branch=fLoader->TreeH()->GetBranch("RICHSpecials"); if(branch){CreateSpecialsOld(); branch->SetAddress(&fSpecials);}
643 }//H
c021cb15 644 AliDetector::SetTreeAddress();//this is after TreeH because we need to guarantee that fHits array is created
645
c60862bf 646 if(fLoader->TreeS()){//S
853634d3 647 if(GetDebug())Info("SetTreeAddress","tree S is requested.");
c60862bf 648 branch=fLoader->TreeS()->GetBranch(GetName()); if(branch){CreateSdigits(); branch->SetAddress(&fSdigits);}
649 }//S
dfb4e77d 650
c60862bf 651 if(fLoader->TreeD()){//D
853634d3 652 if(GetDebug())Info("SetTreeAddress","tree D is requested.");
c60862bf 653 for(int i=0;i<kNCH;i++){
654 branch=fLoader->TreeD()->GetBranch(Form("%s%d",GetName(),i+1));
655 if(branch){CreateDigits(); branch->SetAddress(&((*fDigitsNew)[i]));}
dfb4e77d 656
c60862bf 657 branch=fLoader->TreeD()->GetBranch(Form("%sDigits%d",GetName(),i+1));
658 if(branch){CreateDigitsOld(); branch->SetAddress(&((*fDchambers)[i]));}
659 }//for
660 }//D
dfb4e77d 661
c60862bf 662 if(fLoader->TreeR()){//R
853634d3 663 if(GetDebug())Info("SetTreeAddress","tree R is requested.");
664
c60862bf 665 for(int i=0;i<kNCH;i++){
666 branch=fLoader->TreeR()->GetBranch(Form("%sClusters%d" ,GetName(),i+1));
667 if(branch){CreateClusters(); branch->SetAddress(&((*fRawClusters)[i]));}
dfb4e77d 668 }
c60862bf 669
670 for(int i=0;i<kNCH;i++) {
671 branch=fLoader->TreeR()->GetBranch(Form("%sRawClusters%d" ,GetName(),i+1));
672 if(branch){CreateRawClustersOld(); branch->SetAddress(&((*fRawClusters)[i]));}
dfb4e77d 673
c60862bf 674 branch=fLoader->TreeR()->GetBranch(Form("%sRecHits1D%d",GetName(),i+1));
675 if(branch){CreateRecos1Old(); branch->SetAddress(&((*fRecHits1D)[i]));}
dfb4e77d 676
c60862bf 677 branch=fLoader->TreeR()->GetBranch(Form("%sRecHits3D%d",GetName(),i+1));
678 if(branch){CreateRecos3Old();branch->SetAddress(&((*fRecHits3D)[i]));}
679 }
680 }//R
dfb4e77d 681 if(GetDebug())Info("SetTreeAddress","Stop.");
682}//void AliRICH::SetTreeAddress()
c021cb15 683//__________________________________________________________________________________________________
dfb4e77d 684void AliRICH::Print(Option_t *option)const
685{
686 TObject::Print(option);
c60862bf 687 Param()->Dump();
c021cb15 688 fChambers->Print(option);
dfb4e77d 689}//void AliRICH::Print(Option_t *option)const
c021cb15 690//__________________________________________________________________________________________________
3ea9cb08 691void AliRICH::CreateGeometry()
692{//Creates detailed geometry simulation (currently GEANT volumes tree)
693 if(GetDebug())Info("CreateGeometry","Start.");
694//???????? to be removed to AliRICHParam?
c60862bf 695 Param()->RadiatorToPads(Param()->FreonThickness()/2+Param()->QuartzThickness()+Param()->GapThickness());
3ea9cb08 696
697//Opaque quartz thickness
698 Float_t oqua_thickness = .5;
699//CsI dimensions
c60862bf 700 Float_t pcX=Param()->PcSizeX();
701 Float_t pcY=Param()->PcSizeY();
3ea9cb08 702
703 Int_t *idtmed = fIdtmed->GetArray()-999;
704
705 Int_t i;
706 Float_t zs;
707 Int_t idrotm[1099];
708 Float_t par[3];
709
710//External aluminium box
c60862bf 711 par[0]=68.8*kcm;par[1]=13*kcm;par[2]=70.86*kcm; gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3);
3ea9cb08 712//Air
c60862bf 713 par[0]=66.3; par[1] = 13; par[2] = 68.35; gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3);
3ea9cb08 714//Air 2 (cutting the lower part of the box)
c60862bf 715 par[0]=1.25; par[1] = 3; par[2] = 70.86; gMC->Gsvolu("AIR2", "BOX ", idtmed[1000], par, 3);
3ea9cb08 716//Air 3 (cutting the lower part of the box)
c60862bf 717 par[0]=66.3; par[1] = 3; par[2] = 1.2505; gMC->Gsvolu("AIR3", "BOX ", idtmed[1000], par, 3);
3ea9cb08 718//Honeycomb
c60862bf 719 par[0]=66.3;par[1]=0.188; par[2] = 68.35; gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3);
3ea9cb08 720//Aluminium sheet
c60862bf 721 par[0]=66.3;par[1]=0.025;par[2]=68.35; gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3);
3ea9cb08 722 //par[0] = 66.5; par[1] = .025; par[2] = 63.1;
3ea9cb08 723//Quartz
c60862bf 724 par[0]=Param()->QuartzWidth()/2;par[1]=Param()->QuartzThickness()/2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 725 gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3);
726//Spacers (cylinders)
c60862bf 727 par[0]=0.;par[1]=.5;par[2]=Param()->FreonThickness()/2; gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3);
3ea9cb08 728//Feet (freon slabs supports)
c60862bf 729 par[0] = .7; par[1] = .3; par[2] = 1.9; gMC->Gsvolu("FOOT", "BOX", idtmed[1009], par, 3);
3ea9cb08 730//Opaque quartz
c60862bf 731 par[0]=Param()->QuartzWidth()/2;par[1]= .2;par[2]=Param()->QuartzLength()/2;
3ea9cb08 732 gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3);
733//Frame of opaque quartz
c60862bf 734 par[0]=Param()->OuterFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->OuterFreonLength()/2;
3ea9cb08 735 gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3);
c60862bf 736 par[0]=Param()->InnerFreonWidth()/2;par[1]=Param()->FreonThickness()/2;par[2]=Param()->InnerFreonLength()/2;
3ea9cb08 737 gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3);
738//Freon
c60862bf 739 par[0]=Param()->OuterFreonWidth()/2 - oqua_thickness;
740 par[1]=Param()->FreonThickness()/2;
741 par[2]=Param()->OuterFreonLength()/2 - 2*oqua_thickness;
3ea9cb08 742 gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3);
743
c60862bf 744 par[0]=Param()->InnerFreonWidth()/2 - oqua_thickness;
745 par[1]=Param()->FreonThickness()/2;
746 par[2]=Param()->InnerFreonLength()/2 - 2*oqua_thickness;
3ea9cb08 747 gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3);
748//Methane
c60862bf 749 par[0]=pcX/2;par[1]=Param()->GapThickness()/2;par[2]=pcY/2; gMC->Gsvolu("META","BOX ",idtmed[1004], par, 3);
3ea9cb08 750//Methane gap
c60862bf 751 par[0]=pcX/2;par[1]=Param()->ProximityGapThickness()/2;par[2]=pcY/2;gMC->Gsvolu("GAP ","BOX ",(*fIdtmed)[kGAP],par,3);
752//CsI PC
753 par[0]=pcX/2;par[1]=.25;par[2]=pcY/2; gMC->Gsvolu("CSI ", "BOX ", (*fIdtmed)[kCSI], par, 3);
3ea9cb08 754//Anode grid
c60862bf 755 par[0] = 0.;par[1] = .001;par[2] = 20.; gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3);
3ea9cb08 756
757//Wire supports
758//Bar of metal
c60862bf 759 par[0]=pcX/2;par[1]=1.05;par[2]=1.05; gMC->Gsvolu("WSMe", "BOX ", idtmed[1009], par, 3);
3ea9cb08 760//Ceramic pick up (base)
c60862bf 761 par[0]=pcX/2;par[1]= .25;par[2]=1.05; gMC->Gsvolu("WSG1", "BOX ", idtmed[1010], par, 3);
3ea9cb08 762//Ceramic pick up (head)
c60862bf 763 par[0] = pcX/2;par[1] = .1;par[2] = .1; gMC->Gsvolu("WSG2", "BOX ", idtmed[1010], par, 3);
3ea9cb08 764
765//Aluminium supports for methane and CsI
766//Short bar
c60862bf 767 par[0]=pcX/2;par[1]=Param()->GapThickness()/2 + .25; par[2] = (68.35 - pcY/2)/2;
3ea9cb08 768 gMC->Gsvolu("SMSH", "BOX", idtmed[1009], par, 3);
769//Long bar
c60862bf 770 par[0]=(66.3 - pcX/2)/2;par[1]=Param()->GapThickness()/2+.25;par[2]=pcY/2+68.35-pcY/2;
3ea9cb08 771 gMC->Gsvolu("SMLG", "BOX", idtmed[1009], par, 3);
772
773//Aluminium supports for freon
774//Short bar
c60862bf 775 par[0] = Param()->QuartzWidth()/2; par[1] = .3; par[2] = (68.35 - Param()->QuartzLength()/2)/2;
3ea9cb08 776 gMC->Gsvolu("SFSH", "BOX", idtmed[1009], par, 3);
777//Long bar
c60862bf 778 par[0] = (66.3 - Param()->QuartzWidth()/2)/2; par[1] = .3;
779 par[2] = Param()->QuartzLength()/2 + 68.35 - Param()->QuartzLength()/2;
3ea9cb08 780 gMC->Gsvolu("SFLG", "BOX", idtmed[1009], par, 3);
781//PCB backplane
c60862bf 782 par[0] = pcX/2;par[1] = .25; par[2] = pcY/4 -.5025; gMC->Gsvolu("PCB ", "BOX", idtmed[1011], par, 3);
3ea9cb08 783
784//Backplane supports
785//Aluminium slab
c60862bf 786 par[0] = 33.15;par[1] = 2;par[2] = 21.65; gMC->Gsvolu("BACK", "BOX", idtmed[1009], par, 3);
3ea9cb08 787//Big hole
c60862bf 788 par[0] = 9.05; par[1] = 2; par[2] = 4.4625; gMC->Gsvolu("BKHL", "BOX", idtmed[1000], par, 3);
3ea9cb08 789//Small hole
c60862bf 790 par[0] = 5.7;par[1] = 2;par[2] = 4.4625; gMC->Gsvolu("BKHS", "BOX", idtmed[1000], par, 3);
3ea9cb08 791//Place holes inside backplane support
792 gMC->Gspos("BKHS", 1, "BACK", .8 + 5.7,0., .6 + 4.4625, 0, "ONLY");
793 gMC->Gspos("BKHS", 2, "BACK", -.8 - 5.7,0., .6 + 4.4625, 0, "ONLY");
794 gMC->Gspos("BKHS", 3, "BACK", .8 + 5.7,0., -.6 - 4.4625, 0, "ONLY");
795 gMC->Gspos("BKHS", 4, "BACK", -.8 - 5.7,0., -.6 - 4.4625, 0, "ONLY");
796 gMC->Gspos("BKHS", 5, "BACK", .8 + 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
797 gMC->Gspos("BKHS", 6, "BACK", -.8 - 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
798 gMC->Gspos("BKHS", 7, "BACK", .8 + 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
799 gMC->Gspos("BKHS", 8, "BACK", -.8 - 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
800 gMC->Gspos("BKHL", 1, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., .6 + 4.4625, 0, "ONLY");
801 gMC->Gspos("BKHL", 2, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 4.4625, 0, "ONLY");
802 gMC->Gspos("BKHL", 3, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 4.4625, 0, "ONLY");
803 gMC->Gspos("BKHL", 4, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 4.4625, 0, "ONLY");
804 gMC->Gspos("BKHL", 5, "BACK", .8 + 11.4+ 1.6 + 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
805 gMC->Gspos("BKHL", 6, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
806 gMC->Gspos("BKHL", 7, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
807 gMC->Gspos("BKHL", 8, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
808//Place material inside RICH
809 gMC->Gspos("SRIC", 1, "RICH", 0.,0., 0., 0, "ONLY");
c60862bf 810 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");
811 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");
812 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");
813 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");
814 gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .376 -.025, 0., 0, "ONLY");
815 gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .05 - .188, 0., 0, "ONLY");
816 gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .6 - .025, 0., 0, "ONLY");
817 gMC->Gspos("FOOT", 1, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
818 gMC->Gspos("FOOT", 2, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3 , 36.9, 0, "ONLY");
819 gMC->Gspos("FOOT", 3, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
820 gMC->Gspos("FOOT", 4, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, 36.9, 0, "ONLY");
821 gMC->Gspos("FOOT", 5, "SRIC", 64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
822 gMC->Gspos("FOOT", 6, "SRIC", 21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
823 gMC->Gspos("FOOT", 7, "SRIC", -21.65, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
824 gMC->Gspos("FOOT", 8, "SRIC", -64.95, 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .4 - .3, -36.9, 0, "ONLY");
825 gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()- .2, 0., 0, "ONLY");
3ea9cb08 826// Methane supports
c60862bf 827 gMC->Gspos("SMLG", 1, "SRIC", pcX/2 + (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
828 gMC->Gspos("SMLG", 2, "SRIC", - pcX/2 - (66.3 - pcX/2)/2, 1.276 + .25, 0., 0, "ONLY");
829 gMC->Gspos("SMSH", 1, "SRIC", 0., 1.276 + .25, pcY/2 + (68.35 - pcY/2)/2, 0, "ONLY");
830 gMC->Gspos("SMSH", 2, "SRIC", 0., 1.276 + .25, - pcY/2 - (68.35 - pcY/2)/2, 0, "ONLY");
3ea9cb08 831//Freon supports
c60862bf 832 Float_t supp_y = 1.276 - Param()->GapThickness()/2- Param()->QuartzThickness() -Param()->FreonThickness() - .2 + .3; //y position of freon supports
833 gMC->Gspos("SFLG", 1, "SRIC", Param()->QuartzWidth()/2 + (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
834 gMC->Gspos("SFLG", 2, "SRIC", - Param()->QuartzWidth()/2 - (66.3 - Param()->QuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
835 gMC->Gspos("SFSH", 1, "SRIC", 0., supp_y, Param()->QuartzLength()/2 + (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
836 gMC->Gspos("SFSH", 2, "SRIC", 0., supp_y, - Param()->QuartzLength()/2 - (68.35 - Param()->QuartzLength()/2)/2, 0, "ONLY");
3ea9cb08 837 AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.);
838//Place spacers
839 Int_t nspacers = 30;
840 for (i = 0; i < nspacers/3; i++) {
841 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
842 gMC->Gspos("SPAC", i, "FRE1", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
843 }
844 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
845 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
846 gMC->Gspos("SPAC", i, "FRE1", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
847 }
848 for (i = (nspacers*2)/3; i < nspacers; ++i) {
849 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
850 gMC->Gspos("SPAC", i, "FRE1", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
851 }
852 for (i = 0; i < nspacers/3; i++) {
853 zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
854 gMC->Gspos("SPAC", i, "FRE2", 10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
855 }
856 for (i = nspacers/3; i < (nspacers*2)/3; i++) {
857 zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
858 gMC->Gspos("SPAC", i, "FRE2", 0, 0., zs, idrotm[1019], "ONLY"); //Original settings
859 }
860 for (i = (nspacers*2)/3; i < nspacers; ++i) {
861 zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
862 gMC->Gspos("SPAC", i, "FRE2", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
863 }
864 gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
865 gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
c60862bf 866 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)
867 gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness() - Param()->FreonThickness()/2, 0., 0, "ONLY"); //Original settings
868 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)
869 gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - Param()->GapThickness()/2 - Param()->QuartzThickness()/2, 0., 0, "ONLY");
870 gMC->Gspos("GAP ", 1, "META", 0., Param()->GapThickness()/2 - Param()->ProximityGapThickness()/2 - 0.0001, 0., 0, "ONLY");
3ea9cb08 871 gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
c60862bf 872 gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + Param()->GapThickness()/2 + .25, 0., 0, "ONLY");
3ea9cb08 873//Wire support placing
c60862bf 874 gMC->Gspos("WSG2", 1, "GAP ", 0., Param()->ProximityGapThickness()/2 - .1, 0., 0, "ONLY");
3ea9cb08 875 gMC->Gspos("WSG1", 1, "CSI ", 0., 0., 0., 0, "ONLY");
c60862bf 876 gMC->Gspos("WSMe", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, 0., 0, "ONLY");
3ea9cb08 877//Backplane placing
c60862bf 878 gMC->Gspos("BACK", 1, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 43.3, 0, "ONLY");
879 gMC->Gspos("BACK", 2, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2 , 43.3, 0, "ONLY");
880 gMC->Gspos("BACK", 3, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
881 gMC->Gspos("BACK", 4, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
882 gMC->Gspos("BACK", 5, "SRIC ", 33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
883 gMC->Gspos("BACK", 6, "SRIC ", -33.15, 1.276 + Param()->GapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
3ea9cb08 884//PCB placing
c60862bf 885 gMC->Gspos("PCB ", 1, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, pcX/4 + .5025 + 2.5, 0, "ONLY");
886 gMC->Gspos("PCB ", 2, "SRIC ", 0., 1.276 + Param()->GapThickness()/2 + .5 + 1.05, -pcX/4 - .5025 - 2.5, 0, "ONLY");
3ea9cb08 887
888//place chambers into mother volume ALIC
c021cb15 889 for(int i=1;i<=kNCH;i++){
3ea9cb08 890 AliMatrix(idrotm[1000+i],C(i)->ThetaXd(),C(i)->PhiXd(),
891 C(i)->ThetaYd(),C(i)->PhiYd(),
892 C(i)->ThetaZd(),C(i)->PhiZd());
c021cb15 893 gMC->Gspos("RICH",i,"ALIC",C(i)->X(),C(i)->Y(),C(i)->Z(),idrotm[1000+i], "ONLY");
3ea9cb08 894 }
895
896 if(GetDebug())Info("CreateGeometry","Stop.");
897}//void AliRICH::CreateGeometry()
c60862bf 898//__________________________________________________________________________________________________
3ea9cb08 899void AliRICH::CreateChambers()
c60862bf 900{//create all RICH Chambers, do nothing if already created.
901 if(fChambers) return;//
902 if(GetDebug())Info("CreateChambers","Creating RICH chambers.");
3ea9cb08 903 fChambers=new TObjArray(kNCH);
904 fChambers->SetOwner();
c60862bf 905 for(int i=0;i<kNCH;i++) fChambers->AddAt(new AliRICHChamber(i+1,Param()),i);
3ea9cb08 906}//void AliRICH::CreateChambers()
c021cb15 907//__________________________________________________________________________________________________
c60862bf 908void AliRICH::GenerateFeedbacks(Int_t iChamber,Float_t eloss)
c021cb15 909{// Generate FeedBack photons
910 Int_t j;
911 Float_t cthf, phif, enfp = 0, sthf;
912 Float_t e1[3], e2[3], e3[3];
913 Float_t vmod, uswop;
914 Float_t dir[3], phi;
915 Float_t pol[3], mom[4];
916//Determine number of feedback photons
917 TLorentzVector x4;
c60862bf 918 gMC->TrackPosition(x4);
919 Float_t charge=Param()->TotalCharge(gMC->TrackPid(),eloss,C(iChamber)->G2Ly(x4));//Total Charge
c021cb15 920 Int_t iNphotons=gMC->GetRandom()->Poisson(Param()->AlphaFeedback()*charge);
921 Info("GenerateFeedbacks","N photons=%i",iNphotons);
922//Generate photons
923 for(Int_t i=0;i<iNphotons;i++){
924 Double_t ranf[2];
925 gMC->GetRandom()->RndmArray(2,ranf); //Sample direction
926 cthf=ranf[0]*2-1.0;
927 if(cthf<0) continue;
928 sthf = TMath::Sqrt((1 - cthf) * (1 + cthf));
929 phif = ranf[1] * 2 * TMath::Pi();
930
931 if(Double_t randomNumber=gMC->GetRandom()->Rndm()<=0.57)
932 enfp = 7.5e-9;
933 else if(randomNumber<=0.7)
934 enfp = 6.4e-9;
935 else
936 enfp = 7.9e-9;
937
938
939 dir[0] = sthf * TMath::Sin(phif); dir[1] = cthf; dir[2] = sthf * TMath::Cos(phif);
940 gMC->Gdtom(dir, mom, 2);
941 mom[0]*=enfp; mom[1]*=enfp; mom[2]*=enfp;
942 mom[3] = TMath::Sqrt(mom[0]*mom[0]+mom[1]*mom[1]+mom[2]*mom[2]);
943
944 // Polarisation
945 e1[0]= 0; e1[1]=-dir[2]; e1[2]= dir[1];
946 e2[0]=-dir[1]; e2[1]= dir[0]; e2[2]= 0;
947 e3[0]= dir[1]; e3[1]= 0; e3[2]=-dir[0];
948
949 vmod=0;
950 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
951 if (!vmod) for(j=0;j<3;j++) {
952 uswop=e1[j];
953 e1[j]=e3[j];
954 e3[j]=uswop;
955 }
956 vmod=0;
957 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
958 if (!vmod) for(j=0;j<3;j++) {
959 uswop=e2[j];
960 e2[j]=e3[j];
961 e3[j]=uswop;
962 }
963
964 vmod=0;
965 for(j=0;j<3;j++) vmod+=e1[j]*e1[j];
966 vmod=TMath::Sqrt(1/vmod);
967 for(j=0;j<3;j++) e1[j]*=vmod;
968
969 vmod=0;
970 for(j=0;j<3;j++) vmod+=e2[j]*e2[j];
971 vmod=TMath::Sqrt(1/vmod);
972 for(j=0;j<3;j++) e2[j]*=vmod;
973
974 phi = gMC->GetRandom()->Rndm()* 2 * TMath::Pi();
975 for(j=0;j<3;j++) pol[j]=e1[j]*TMath::Sin(phi)+e2[j]*TMath::Cos(phi);
976 gMC->Gdtom(pol, pol, 2);
977 Int_t outputNtracksStored;
978 gAlice->PushTrack(1, //do not transport
979 gAlice->GetCurrentTrackNumber(),//parent track
980 kFeedback, //PID
981 mom[0],mom[1],mom[2],mom[3], //track momentum
982 x4.X(),x4.Y(),x4.Z(),x4.T(), //track origin
983 pol[0],pol[1],pol[2], //polarization
984 kPFeedBackPhoton,outputNtracksStored,1.0);
985
986 }
987}//Int_t AliRICH::FeedBackPhotons()
988//__________________________________________________________________________________________________