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[u/mrichter/AliRoot.git] / EMCAL / AliEMCALGeometry.cxx
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2012850d 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
16/* $Id$*/
17
18//_________________________________________________________________________
19// Geometry class for EMCAL : singleton
b13bbe81 20// EMCAL consists of layers of scintillator and lead
ffa6d63b 21// Places the the Barrel Geometry of The EMCAL at Midrapidity
d87bd045 22// between 80 and 180(or 190) degrees of Phi and
ffa6d63b 23// -0.7 to 0.7 in eta
24// Number of Modules and Layers may be controlled by
25// the name of the instance defined
b13bbe81 26//*-- Author: Sahal Yacoob (LBL / UCT)
27// and : Yves Schutz (SUBATECH)
28// and : Jennifer Klay (LBL)
1963b290 29// SHASHLYK : Aleksei Pavlinov (WSU)
2012850d 30
2012850d 31// --- AliRoot header files ---
ca8f5bd0 32#include <TMath.h>
116cbefd 33#include <TVector3.h>
173558f2 34
ca8f5bd0 35// -- ALICE Headers.
d64c959b 36//#include "AliConst.h"
173558f2 37
ca8f5bd0 38// --- EMCAL headers
39#include "AliEMCALGeometry.h"
2012850d 40
925e6570 41ClassImp(AliEMCALGeometry)
2012850d 42
b13bbe81 43AliEMCALGeometry *AliEMCALGeometry::fgGeom = 0;
44Bool_t AliEMCALGeometry::fgInit = kFALSE;
1963b290 45TString name; // contains name of geometry
2012850d 46
b13bbe81 47//______________________________________________________________________
48AliEMCALGeometry::~AliEMCALGeometry(void){
49 // dtor
2012850d 50}
b13bbe81 51
395c7ba2 52//______________________________________________________________________
09884213 53Bool_t AliEMCALGeometry::AreInSameTower(Int_t id1, Int_t id2) const {
fdebddeb 54 // Find out whether two hits are in the same tower
395c7ba2 55 Int_t idmax = TMath::Max(id1, id2) ;
56 Int_t idmin = TMath::Min(id1, id2) ;
57 if ( ((idmax - GetNZ() * GetNPhi()) == idmin ) ||
58 ((idmax - 2 * GetNZ() * GetNPhi()) == idmin ) )
59 return kTRUE ;
60 else
61 return kFALSE ;
62}
05a92d59 63
395c7ba2 64//______________________________________________________________________
65void AliEMCALGeometry::Init(void){
66 // Initializes the EMCAL parameters
fdebddeb 67 // naming convention : GUV_WX_N_ gives the composition of a tower
395c7ba2 68 // WX inform about the composition of the EM calorimeter section:
fdebddeb 69 // thickness in mm of Pb radiator (W) and of scintillator (X), and number of scintillator layers (N)
70 // New geometry: EMCAL_55_25
1963b290 71 // 24-aug-04 for shish-kebab
72 // SHISH_25 or SHISH_62
d87bd045 73 // 11-oct-05 - correction for final design
fdebddeb 74 fgInit = kFALSE; // Assume failed until proven otherwise.
1963b290 75 name = GetName();
d87bd045 76 name.ToUpper();
77 fKey110DEG = 0;
78 if(name.Contains("110DEG")) fKey110DEG = 1; // for GetAbsCellId
1963b290 79
80 fNZ = 114; // granularity along Z (eta)
81 fNPhi = 168; // granularity in phi (azimuth)
82 fArm1PhiMin = 60.0; // degrees, Starting EMCAL Phi position
83 fArm1PhiMax = 180.0; // degrees, Ending EMCAL Phi position
84 fArm1EtaMin = -0.7; // pseudorapidity, Starting EMCAL Eta position
85 fArm1EtaMax = +0.7; // pseudorapidity, Ending EMCAL Eta position
86 fIPDistance = 454.0; // cm, Radial distance to inner surface of EMCAL
905263da 87 fPhiGapForSM = 0.; // cm, only for final TRD1 geometry
1963b290 88
89 // geometry
fdebddeb 90 if (name == "EMCAL_55_25") {
91 fECPbRadThickness = 0.5; // cm, Thickness of the Pb radiators
92 fECScintThick = 0.5; // cm, Thickness of the scintillator
93 fNECLayers = 25; // number of scintillator layers
395c7ba2 94
57c473a6 95 fSampling = 13.1; // calculated with Birk's law implementation
395c7ba2 96
fdebddeb 97 fAlFrontThick = 3.5; // cm, Thickness of front Al layer
395c7ba2 98 fGap2Active = 1.0; // cm, Gap between Al and 1st Scintillator
99 }
fdebddeb 100 else if( name == "G56_2_55_19" || name == "EMCAL_5655_21" || name == "G56_2_55_19_104_14"|| name == "G65_2_64_19" || name == "EMCAL_6564_21"){
101 Fatal("Init", "%s is an old geometry! Please update your Config file", name.Data()) ;
395c7ba2 102 }
1963b290 103 else if(name.Contains("SHISH")){
905263da 104 // 7-sep-05; integration issue
105 fArm1PhiMin = 80.0; // 60 -> 80
c01485dd 106 fArm1PhiMax = 180.0; // 180 -> 190
905263da 107
108 fNumberOfSuperModules = 10; // 12 = 6 * 2 (6 in phi, 2 in Z);
1963b290 109 fSteelFrontThick = 2.54; // 9-sep-04
110 fIPDistance = 460.0;
111 fFrontSteelStrip = fPassiveScintThick = 0.0; // 13-may-05
112 fLateralSteelStrip = 0.025; // before MAY 2005
113 fPhiModuleSize = fEtaModuleSize = 11.4;
114 fPhiTileSize = fEtaTileSize = 5.52; // (11.4-5.52*2)/2. = 0.18 cm (wall thickness)
115 fNPhi = 14;
116 fNZ = 30;
117 fAlFrontThick = fGap2Active = 0;
118 fNPHIdiv = fNETAdiv = 2;
119
120 fNECLayers = 62;
121 fECScintThick = fECPbRadThickness = 0.2;
122 fSampling = 1.; // 30-aug-04 - should be calculated
123 if(name.Contains("TWIST")) { // all about EMCAL module
124 fNZ = 27; // 16-sep-04
125 } else if(name.Contains("TRD")) {
126 fIPDistance = 428.0; // 11-may-05
127 fSteelFrontThick = 0.0; // 3.17 -> 0.0; 28-mar-05 : no stell plate
128 fNPhi = 12;
129 fSampling = 12.327;
130 fPhiModuleSize = fEtaModuleSize = 12.26;
131 fNZ = 26; // 11-oct-04
132 fTrd1Angle = 1.3; // in degree
133// 18-nov-04; 1./0.08112=12.327
134// http://pdsfweb01.nersc.gov/~pavlinov/ALICE/SHISHKEBAB/RES/linearityAndResolutionForTRD1.html
135 if(name.Contains("TRD1")) { // 30-jan-05
136 // for final design
905263da 137 fPhiGapForSM = 2.; // cm, only for final TRD1 geometry
138 if(name.Contains("MAY05") || name.Contains("WSUC") || name.Contains("FINAL")){
1963b290 139 fNumberOfSuperModules = 12; // 20-may-05
140 if(name.Contains("WSUC")) fNumberOfSuperModules = 1; // 27-may-05
141 fNECLayers = 77; // (13-may-05 from V.Petrov)
142 fPhiModuleSize = 12.5; // 20-may-05 - rectangular shape
143 fEtaModuleSize = 11.9;
144 fECScintThick = fECPbRadThickness = 0.16;// (13-may-05 from V.Petrov)
145 fFrontSteelStrip = 0.025;// 0.025cm = 0.25mm (13-may-05 from V.Petrov)
146 fLateralSteelStrip = 0.01; // 0.01cm = 0.1mm (13-may-05 from V.Petrov) - was 0.025
147 fPassiveScintThick = 0.8; // 0.8cm = 8mm (13-may-05 from V.Petrov)
148 fNZ = 24;
149 fTrd1Angle = 1.5; // 1.3 or 1.5
905263da 150
151 if(name.Contains("FINAL")) { // 9-sep-05
152 fNumberOfSuperModules = 10;
d87bd045 153 if(name.Contains("110DEG")) {
154 fNumberOfSuperModules = 12;// last two modules have size 10 degree in phi (180<phi<190)
155 fArm1PhiMax = 200.0; // for XEN1 and turn angle of super modules
156 }
905263da 157 fPhiModuleSize = 12.26 - fPhiGapForSM / Float_t(fNPhi); // first assumption
158 fEtaModuleSize = fPhiModuleSize;
c01485dd 159 if(name.Contains("HUGE")) fNECLayers *= 3; // 28-oct-05 for analysing leakage
905263da 160 }
1963b290 161 }
162 } else if(name.Contains("TRD2")) { // 30-jan-05
163 fSteelFrontThick = 0.0; // 11-mar-05
164 fIPDistance+= fSteelFrontThick; // 1-feb-05 - compensate absence of steel plate
165 fTrd1Angle = 1.64; // 1.3->1.64
166 fTrd2AngleY = fTrd1Angle; // symmetric case now
167 fEmptySpace = 0.2; // 2 mm
168 fTubsR = fIPDistance; // 31-jan-05 - as for Fred case
169
170 fPhiModuleSize = fTubsR*2.*TMath::Tan(fTrd2AngleY*TMath::DegToRad()/2.);
171 fPhiModuleSize -= fEmptySpace/2.; // 11-mar-05
172 fEtaModuleSize = fPhiModuleSize; // 20-may-05
173 fTubsTurnAngle = 3.;
174 }
175 fNPHIdiv = fNETAdiv = 2; // 13-oct-04 - division again
176 if(name.Contains("3X3")) { // 23-nov-04
177 fNPHIdiv = fNETAdiv = 3;
178 } else if(name.Contains("4X4")) {
179 fNPHIdiv = fNETAdiv = 4;
180 }
181 }
182 fPhiTileSize = fPhiModuleSize/2. - fLateralSteelStrip; // 13-may-05
183 fEtaTileSize = fEtaModuleSize/2. - fLateralSteelStrip; // 13-may-05
184
185 if(name.Contains("25")){
186 fNECLayers = 25;
187 fECScintThick = fECPbRadThickness = 0.5;
188 }
189 if(name.Contains("WSUC")){ // 18-may-05 - about common structure
190 fShellThickness = 30.; // should be change
191 fNPhi = fNZ = 4;
192 }
193 // constant for transition absid <--> indexes
194 fNCellsInTower = fNPHIdiv*fNETAdiv;
195 fNCellsInSupMod = fNCellsInTower*fNPhi*fNZ;
196 fNCells = fNCellsInSupMod*fNumberOfSuperModules;
d87bd045 197 if(name.Contains("110DEG")) fNCells -= fNCellsInSupMod;
1963b290 198
199 fLongModuleSize = fNECLayers*(fECScintThick + fECPbRadThickness);
200 if(name.Contains("MAY05")) fLongModuleSize += (fFrontSteelStrip + fPassiveScintThick);
201
202 // 30-sep-04
203 if(name.Contains("TRD")) {
204 f2Trd1Dx2 = fEtaModuleSize + 2.*fLongModuleSize*TMath::Tan(fTrd1Angle*TMath::DegToRad()/2.);
205 if(name.Contains("TRD2")) { // 27-jan-05
206 f2Trd2Dy2 = fPhiModuleSize + 2.*fLongModuleSize*TMath::Tan(fTrd2AngleY*TMath::DegToRad()/2.);
207 }
208 }
209 }
395c7ba2 210 else
211 Fatal("Init", "%s is an undefined geometry!", name.Data()) ;
05a92d59 212
fdebddeb 213
1963b290 214 fNPhiSuperModule = fNumberOfSuperModules/2;
215 if(fNPhiSuperModule<1) fNPhiSuperModule = 1;
fdebddeb 216 //There is always one more scintillator than radiator layer because of the first block of aluminium
217 fShellThickness = fAlFrontThick + fGap2Active + fNECLayers*GetECScintThick()+(fNECLayers-1)*GetECPbRadThick();
1963b290 218 if(name.Contains("SHISH")) {
219 fShellThickness = fSteelFrontThick + fLongModuleSize;
220 if(name.Contains("TWIST")) { // 13-sep-04
221 fShellThickness = TMath::Sqrt(fLongModuleSize*fLongModuleSize + fPhiModuleSize*fEtaModuleSize);
222 fShellThickness += fSteelFrontThick;
223 } else if(name.Contains("TRD")) { // 1-oct-04
224 fShellThickness = TMath::Sqrt(fLongModuleSize*fLongModuleSize + f2Trd1Dx2*f2Trd1Dx2);
225 fShellThickness += fSteelFrontThick;
226 }
227 }
fdebddeb 228
395c7ba2 229 fZLength = 2.*ZFromEtaR(fIPDistance+fShellThickness,fArm1EtaMax); // Z coverage
230 fEnvelop[0] = fIPDistance; // mother volume inner radius
231 fEnvelop[1] = fIPDistance + fShellThickness; // mother volume outer r.
232 fEnvelop[2] = 1.00001*fZLength; // add some padding for mother volume.
233
234 fgInit = kTRUE;
235
1963b290 236 if (kTRUE) {
237 printf("Init: geometry of EMCAL named %s is as follows:\n", name.Data());
905263da 238 printf( " ECAL : %d x (%f cm Pb, %f cm Sc) \n", GetNECLayers(), GetECPbRadThick(), GetECScintThick() ) ;
1963b290 239 if(name.Contains("SHISH")){
240 printf(" fIPDistance %6.3f cm \n", fIPDistance);
241 if(fSteelFrontThick>0.)
242 printf(" fSteelFrontThick %6.3f cm \n", fSteelFrontThick);
243 printf(" fNPhi %i | fNZ %i \n", fNPhi, fNZ);
d87bd045 244 printf(" fNCellsInTower %i : fNCellsInSupMod %i : fNCells %i\n",fNCellsInTower, fNCellsInSupMod, fNCells);
1963b290 245 if(name.Contains("MAY05")){
246 printf(" fFrontSteelStrip %6.4f cm (thickness of front steel strip)\n",
247 fFrontSteelStrip);
248 printf(" fLateralSteelStrip %6.4f cm (thickness of lateral steel strip)\n",
249 fLateralSteelStrip);
250 printf(" fPassiveScintThick %6.4f cm (thickness of front passive Sc tile)\n",
251 fPassiveScintThick);
252 }
253 printf(" X:Y module size %6.3f , %6.3f cm \n", fPhiModuleSize, fEtaModuleSize);
254 printf(" X:Y tile size %6.3f , %6.3f cm \n", fPhiTileSize, fEtaTileSize);
255 printf(" fLongModuleSize %6.3f cm \n", fLongModuleSize);
256 printf(" #supermodule in phi direction %i \n", fNPhiSuperModule );
257 }
258 if(name.Contains("TRD")) {
259 printf(" fTrd1Angle %7.4f\n", fTrd1Angle);
260 printf(" f2Trd1Dx2 %7.4f\n", f2Trd1Dx2);
261 if(name.Contains("TRD2")) {
262 printf(" fTrd2AngleY %7.4f\n", fTrd2AngleY);
263 printf(" f2Trd2Dy2 %7.4f\n", f2Trd2Dy2);
905263da 264 printf(" fTubsR %7.2f cm\n", fTubsR);
1963b290 265 printf(" fTubsTurnAngle %7.4f\n", fTubsTurnAngle);
905263da 266 printf(" fEmptySpace %7.4f cm\n", fEmptySpace);
267 } else if(name.Contains("TRD1") && name.Contains("FINAL")){
268 printf(" fPhiGapForSM %7.4f cm \n", fPhiGapForSM);
d87bd045 269 if(name.Contains("110DEG"))printf(" Last two modules have size 10 degree in phi (180<phi<190)\n");
1963b290 270 }
271 }
88cb7938 272 printf("Granularity: %d in eta and %d in phi\n", GetNZ(), GetNPhi()) ;
1963b290 273 printf("Layout: phi = (%7.1f, %7.1f), eta = (%5.2f, %5.2f), IP = %7.2f\n",
274 GetArm1PhiMin(), GetArm1PhiMax(),GetArm1EtaMin(), GetArm1EtaMax(), GetIPDistance() );
88cb7938 275 }
2012850d 276}
173558f2 277
b13bbe81 278//______________________________________________________________________
279AliEMCALGeometry * AliEMCALGeometry::GetInstance(){
05a92d59 280 // Returns the pointer of the unique instance
281
282 return static_cast<AliEMCALGeometry *>( fgGeom ) ;
2012850d 283}
173558f2 284
b13bbe81 285//______________________________________________________________________
286AliEMCALGeometry* AliEMCALGeometry::GetInstance(const Text_t* name,
287 const Text_t* title){
288 // Returns the pointer of the unique instance
289
290 AliEMCALGeometry * rv = 0;
291 if ( fgGeom == 0 ) {
292 if ( strcmp(name,"") == 0 ) rv = 0;
293 else {
294 fgGeom = new AliEMCALGeometry(name, title);
295 if ( fgInit ) rv = (AliEMCALGeometry * ) fgGeom;
296 else {
297 rv = 0;
298 delete fgGeom;
299 fgGeom = 0;
300 } // end if fgInit
301 } // end if strcmp(name,"")
302 }else{
303 if ( strcmp(fgGeom->GetName(), name) != 0 ) {
fdebddeb 304 printf("\ncurrent geometry is ") ;
305 printf(fgGeom->GetName());
306 printf("\n you cannot call ");
307 printf(name);
b13bbe81 308 }else{
9859bfc0 309 rv = (AliEMCALGeometry *) fgGeom;
b13bbe81 310 } // end if
311 } // end if fgGeom
312 return rv;
2012850d 313}
173558f2 314
ca8f5bd0 315//______________________________________________________________________
395c7ba2 316Int_t AliEMCALGeometry::TowerIndex(Int_t ieta,Int_t iphi) const {
317 // Returns the tower index number from the based on the Z and Phi
fdebddeb 318 // index numbers.
395c7ba2 319 // Inputs:
fdebddeb 320 // Int_t ieta // index along z axis [1-fNZ]
321 // Int_t iphi // index along phi axis [1-fNPhi]
395c7ba2 322 // Outputs:
323 // none.
324 // Returned
325 // Int_t index // Tower index number
326
327 if ( (ieta <= 0 || ieta>GetNEta()) ||
f1da4a27 328 (iphi <= 0 || iphi>GetNPhi())) {
329 Error("TowerIndex", "Unexpected parameters eta = %d phi = %d!", ieta, iphi) ;
330 return -1;
331 }
395c7ba2 332 return ( (iphi - 1)*GetNEta() + ieta );
ca8f5bd0 333}
173558f2 334
ca8f5bd0 335//______________________________________________________________________
fdebddeb 336void AliEMCALGeometry::TowerIndexes(Int_t index,Int_t &ieta,Int_t &iphi) const {
395c7ba2 337 // Inputs:
fdebddeb 338 // Int_t index // Tower index number [1-fNZ*fNPhi]
395c7ba2 339 // Outputs:
340 // Int_t ieta // index allong z axis [1-fNZ]
341 // Int_t iphi // index allong phi axis [1-fNPhi]
395c7ba2 342 // Returned
343 // none.
395c7ba2 344
fdebddeb 345 Int_t nindex = 0;
395c7ba2 346
fdebddeb 347 if ( IsInECA(index) ) { // ECAL index
395c7ba2 348 nindex = index ;
395c7ba2 349 }
f1da4a27 350 else {
351 Error("TowerIndexes", "Unexpected Id number!") ;
352 ieta = -1;
353 iphi = -1;
354 return;
355 }
356
395c7ba2 357 if (nindex%GetNZ())
358 iphi = nindex / GetNZ() + 1 ;
359 else
360 iphi = nindex / GetNZ() ;
361 ieta = nindex - (iphi - 1) * GetNZ() ;
362
363 if (gDebug==2)
fdebddeb 364 printf("TowerIndexes: index=%d,%d, ieta=%d, iphi = %d", index, nindex,ieta, iphi) ;
395c7ba2 365 return;
366
ca8f5bd0 367}
173558f2 368
ca8f5bd0 369//______________________________________________________________________
a34b7b9f 370void AliEMCALGeometry::EtaPhiFromIndex(Int_t index,Float_t &eta,Float_t &phi) const {
ca8f5bd0 371 // given the tower index number it returns the based on the eta and phi
372 // of the tower.
373 // Inputs:
fdebddeb 374 // Int_t index // Tower index number [1-fNZ*fNPhi]
ca8f5bd0 375 // Outputs:
376 // Float_t eta // eta of center of tower in pseudorapidity
377 // Float_t phi // phi of center of tower in degrees
378 // Returned
379 // none.
fdebddeb 380 Int_t ieta, iphi;
395c7ba2 381 Float_t deta, dphi ;
ca8f5bd0 382
fdebddeb 383 TowerIndexes(index,ieta,iphi);
395c7ba2 384
385 if (gDebug == 2)
fdebddeb 386 printf("EtaPhiFromIndex: index = %d, ieta = %d, iphi = %d", index, ieta, iphi) ;
395c7ba2 387
388 deta = (GetArm1EtaMax()-GetArm1EtaMin())/(static_cast<Float_t>(GetNEta()));
389 eta = GetArm1EtaMin() + ((static_cast<Float_t>(ieta) - 0.5 ))*deta;
390
391 dphi = (GetArm1PhiMax() - GetArm1PhiMin())/(static_cast<Float_t>(GetNPhi())); // in degrees.
392 phi = GetArm1PhiMin() + dphi*(static_cast<Float_t>(iphi) - 0.5);//iphi range [1-fNphi].
ca8f5bd0 393}
173558f2 394
ca8f5bd0 395//______________________________________________________________________
a34b7b9f 396Int_t AliEMCALGeometry::TowerIndexFromEtaPhi(Float_t eta,Float_t phi) const {
ca8f5bd0 397 // returns the tower index number based on the eta and phi of the tower.
398 // Inputs:
399 // Float_t eta // eta of center of tower in pseudorapidity
400 // Float_t phi // phi of center of tower in degrees
401 // Outputs:
402 // none.
403 // Returned
404 // Int_t index // Tower index number [1-fNZ*fNPhi]
395c7ba2 405
e908f07f 406 Int_t ieta,iphi;
ca8f5bd0 407
395c7ba2 408 ieta = static_cast<Int_t> ( 1 + (static_cast<Float_t>(GetNEta()) * (eta - GetArm1EtaMin()) / (GetArm1EtaMax() - GetArm1EtaMin())) ) ;
409
410 if( ieta <= 0 || ieta > GetNEta() ) {
411 Error("TowerIndexFromEtaPhi", "Unexpected (eta, phi) = (%f, %f) value, outside of EMCAL!", eta, phi) ;
412 return -1 ;
413 }
414
415 iphi = static_cast<Int_t> ( 1 + (static_cast<Float_t>(GetNPhi()) * (phi - GetArm1PhiMin()) / (GetArm1PhiMax() - GetArm1PhiMin())) ) ;
416
417 if( iphi <= 0 || iphi > GetNPhi() ) {
418 Error("TowerIndexFromEtaPhi", "Unexpected (eta, phi) = (%f, %f) value, outside of EMCAL!", eta, phi) ;
419 return -1 ;
420 }
421
422 return TowerIndex(ieta,iphi);
ca8f5bd0 423}
173558f2 424
ca8f5bd0 425//______________________________________________________________________
a34b7b9f 426Bool_t AliEMCALGeometry::AbsToRelNumbering(Int_t AbsId, Int_t *relid) const {
ca8f5bd0 427 // Converts the absolute numbering into the following array/
2608a1fc 428 // relid[0] = Row number inside EMCAL
429 // relid[1] = Column number inside EMCAL
ca8f5bd0 430 // Input:
431 // Int_t AbsId // Tower index number [1-2*fNZ*fNPhi]
432 // Outputs:
2608a1fc 433 // Int_t *relid // array of 2. Described above.
ca8f5bd0 434 Bool_t rv = kTRUE ;
fdebddeb 435 Int_t ieta=0,iphi=0,index=AbsId;
ca8f5bd0 436
fdebddeb 437 TowerIndexes(index,ieta,iphi);
2608a1fc 438 relid[0] = ieta;
439 relid[1] = iphi;
ca8f5bd0 440
441 return rv;
442}
173558f2 443
ca8f5bd0 444//______________________________________________________________________
395c7ba2 445void AliEMCALGeometry::PosInAlice(const Int_t *relid, Float_t &theta, Float_t &phi) const
446{
447 // Converts the relative numbering into the local EMCAL-module (x, z)
448 // coordinates
2608a1fc 449 Int_t ieta = relid[0]; // offset along x axis
450 Int_t iphi = relid[1]; // offset along z axis
395c7ba2 451 Int_t index;
452 Float_t eta;
453
454 index = TowerIndex(ieta,iphi);
455 EtaPhiFromIndex(index,eta,phi);
fdebddeb 456 //theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
457 theta = 2.0*TMath::ATan(TMath::Exp(-eta));
395c7ba2 458
fdebddeb 459 // correct for distance to IP
460 Float_t d = GetIP2ECASection() - GetIPDistance() ;
395c7ba2 461
462 Float_t correction = 1 + d/GetIPDistance() ;
463 Float_t tantheta = TMath::Tan(theta) * correction ;
464 theta = TMath::ATan(tantheta) * TMath::RadToDeg() ;
465 if (theta < 0 )
466 theta += 180. ;
467
468 return;
469}
ca8f5bd0 470
395c7ba2 471//______________________________________________________________________
09884213 472void AliEMCALGeometry::PosInAlice(Int_t absid, Float_t &theta, Float_t &phi) const
395c7ba2 473{
474 // Converts the relative numbering into the local EMCAL-module (x, z)
475 // coordinates
2608a1fc 476 Int_t relid[2] ;
395c7ba2 477 AbsToRelNumbering(absid, relid) ;
2608a1fc 478 Int_t ieta = relid[0]; // offset along x axis
479 Int_t iphi = relid[1]; // offset along z axis
395c7ba2 480 Int_t index;
481 Float_t eta;
482
483 index = TowerIndex(ieta,iphi);
484 EtaPhiFromIndex(index,eta,phi);
485 theta = 2.0*TMath::ATan(TMath::Exp(-eta)) ;
486
fdebddeb 487 // correct for distance to IP
395c7ba2 488 Float_t d = 0. ;
fdebddeb 489 if (IsInECA(absid))
88cb7938 490 d = GetIP2ECASection() - GetIPDistance() ;
f1da4a27 491 else {
492 Error("PosInAlice", "Unexpected id # %d!", absid) ;
493 return;
494 }
395c7ba2 495
496 Float_t correction = 1 + d/GetIPDistance() ;
497 Float_t tantheta = TMath::Tan(theta) * correction ;
498 theta = TMath::ATan(tantheta) * TMath::RadToDeg() ;
499 if (theta < 0 )
500 theta += 180. ;
501
502 return;
ca8f5bd0 503}
6119e5db 504
505//______________________________________________________________________
506void AliEMCALGeometry::XYZFromIndex(const Int_t *relid,Float_t &x,Float_t &y, Float_t &z) const {
507 // given the tower relative number it returns the X, Y and Z
508 // of the tower.
509
510 // Outputs:
511 // Float_t x // x of center of tower in cm
512 // Float_t y // y of center of tower in cm
513 // Float_t z // z of centre of tower in cm
514 // Returned
515 // none.
516
fdebddeb 517 Float_t eta,theta, phi,cylradius=0. ;
6119e5db 518
2608a1fc 519 Int_t ieta = relid[0]; // offset along x axis
520 Int_t iphi = relid[1]; // offset along z axis.
6119e5db 521 Int_t index;
522
395c7ba2 523 index = TowerIndex(ieta,iphi);
6119e5db 524 EtaPhiFromIndex(index,eta,phi);
525 theta = 180.*(2.0*TMath::ATan(TMath::Exp(-eta)))/TMath::Pi();
6119e5db 526
fdebddeb 527 cylradius = GetIP2ECASection() ;
a97849a9 528
395c7ba2 529 Double_t kDeg2Rad = TMath::DegToRad() ;
fdebddeb 530 x = cylradius * TMath::Cos(phi * kDeg2Rad ) ;
531 y = cylradius * TMath::Sin(phi * kDeg2Rad ) ;
532 z = cylradius / TMath::Tan(theta * kDeg2Rad ) ;
6119e5db 533
534 return;
535}
536
395c7ba2 537//______________________________________________________________________
09884213 538void AliEMCALGeometry::XYZFromIndex(Int_t absid, TVector3 &v) const {
395c7ba2 539 // given the tower relative number it returns the X, Y and Z
540 // of the tower.
541
542 // Outputs:
543 // Float_t x // x of center of tower in cm
544 // Float_t y // y of center of tower in cm
545 // Float_t z // z of centre of tower in cm
546 // Returned
547 // none.
548
fdebddeb 549 Float_t theta, phi,cylradius=0. ;
395c7ba2 550
551 PosInAlice(absid, theta, phi) ;
552
88cb7938 553 if ( IsInECA(absid) )
fdebddeb 554 cylradius = GetIP2ECASection() ;
f1da4a27 555 else {
556 Error("XYZFromIndex", "Unexpected Tower section") ;
557 return;
558 }
395c7ba2 559
560 Double_t kDeg2Rad = TMath::DegToRad() ;
fdebddeb 561 v.SetX(cylradius * TMath::Cos(phi * kDeg2Rad ) );
562 v.SetY(cylradius * TMath::Sin(phi * kDeg2Rad ) );
563 v.SetZ(cylradius / TMath::Tan(theta * kDeg2Rad ) ) ;
395c7ba2 564
565 return;
566}
ab37d09c 567
568Bool_t AliEMCALGeometry::IsInEMCAL(Double_t x, Double_t y, Double_t z) const {
569 // Checks whether point is inside the EMCal volume
570 //
571 // Code uses cylindrical approximation made of inner radius (for speed)
572 //
573 // Points behind EMCAl, i.e. R > outer radius, but eta, phi in acceptance
574 // are considered to inside
575
576 Double_t r=sqrt(x*x+y*y);
577
578 if ( r > fEnvelop[0] ) {
579 Double_t theta;
580 theta = TMath::ATan2(r,z);
581 Double_t eta;
582 if(theta == 0)
583 eta = 9999;
584 else
585 eta = -TMath::Log(TMath::Tan(theta/2.));
586 if (eta < fArm1EtaMin || eta > fArm1EtaMax)
587 return 0;
588
589 Double_t phi = TMath::ATan2(y,x) * 180./TMath::Pi();
590 if (phi > fArm1PhiMin && phi < fArm1PhiMax)
591 return 1;
592 }
593 return 0;
594}
1963b290 595
596//
597// == Shish-kebab cases ==
598//
eb0b1051 599Int_t AliEMCALGeometry::GetAbsCellId(Int_t nSupMod, Int_t nTower, Int_t nIphi, Int_t nIeta)
d87bd045 600{ // 27-aug-04;
601 // corr. 21-sep-04;
602 // 13-oct-05; 110 degree case
603 // 1 <= nSupMod <= fNumberOfSuperModules
604 // 1 <= nTower <= fNPHI * fNZ ( fNPHI * fNZ/2 for fKey110DEG=1)
605 // 1 <= nIphi <= fNPHIdiv
606 // 1 <= nIeta <= fNETAdiv
607 // 1 <= absid <= fNCells
608 static Int_t id=0; // have to change from 1 to fNCells
609 if(fKey110DEG == 1 && nSupMod > 10) { // 110 degree case; last two supermodules
610 id = fNCellsInSupMod*10 + (fNCellsInSupMod/2)*(nSupMod-11);
611 } else {
612 id = fNCellsInSupMod*(nSupMod-1);
613 }
1963b290 614 id += fNCellsInTower *(nTower-1);
615 id += fNPHIdiv *(nIphi-1);
616 id += nIeta;
617 if(id<=0 || id > fNCells) {
500aeccc 618// printf(" wrong numerations !!\n");
619// printf(" id %6i(will be force to -1)\n", id);
620// printf(" fNCells %6i\n", fNCells);
621// printf(" nSupMod %6i\n", nSupMod);
622// printf(" nTower %6i\n", nTower);
623// printf(" nIphi %6i\n", nIphi);
624// printf(" nIeta %6i\n", nIeta);
d87bd045 625 id = -TMath::Abs(id);
1963b290 626 }
627 return id;
628}
629
630Bool_t AliEMCALGeometry::CheckAbsCellId(Int_t ind)
631{ // 17-niv-04 - analog of IsInECA
632 if(name.Contains("TRD")) {
633 if(ind<=0 || ind > fNCells) return kFALSE;
634 else return kTRUE;
635 } else return IsInECA(ind);
636}
637
eb0b1051 638Bool_t AliEMCALGeometry::GetCellIndex(Int_t absId,Int_t &nSupMod,Int_t &nTower,Int_t &nIphi,Int_t &nIeta)
1963b290 639{ // 21-sep-04
d87bd045 640 // 19-oct-05;
641 static Int_t tmp=0, sm10=0;
1963b290 642 if(absId<=0 || absId>fNCells) {
500aeccc 643// Info("GetCellIndex"," wrong abs Id %i !! \n", absId);
1963b290 644 return kFALSE;
645 }
d87bd045 646 sm10 = fNCellsInSupMod*10;
647 if(fKey110DEG == 1 && absId > sm10) { // 110 degree case; last two supermodules
648 nSupMod = (absId-1-sm10) / (fNCellsInSupMod/2) + 11;
649 tmp = (absId-1-sm10) % (fNCellsInSupMod/2);
650 } else {
651 nSupMod = (absId-1) / fNCellsInSupMod + 1;
652 tmp = (absId-1) % fNCellsInSupMod;
653 }
1963b290 654
655 nTower = tmp / fNCellsInTower + 1;
656 tmp = tmp % fNCellsInTower;
d87bd045 657 nIphi = tmp / fNPHIdiv + 1;
658 nIeta = tmp % fNPHIdiv + 1;
1963b290 659
660 return kTRUE;
661}
662
eb0b1051 663void AliEMCALGeometry::GetTowerPhiEtaIndexInSModule(Int_t nSupMod, Int_t nTower, int &iphit, int &ietat)
d87bd045 664{ // added nSupMod; have to check - 19-oct-05 !
665 static Int_t nphi;
666
667 if(fKey110DEG == 1 && nSupMod>=11) nphi = fNPhi/2;
668 else nphi = fNPhi;
669
670 ietat = (nTower-1)/nphi + 1; // have to change from 1 to fNZ
d87bd045 671 iphit = (nTower-1)%nphi + 1; // have to change from 1 to fNPhi
672}
673
eb0b1051 674void AliEMCALGeometry::GetCellPhiEtaIndexInSModule(Int_t nSupMod, Int_t nTower, Int_t nIphi, Int_t nIeta,
1963b290 675int &iphi, int &ieta)
c01485dd 676{ // added nSupMod; Nov 25, 05
677 static Int_t iphit, ietat;
678
679 GetTowerPhiEtaIndexInSModule(nSupMod,nTower, iphit, ietat);
680 // have to change from 1 to fNZ*fNETAdiv
681 ieta = (ietat-1)*fNETAdiv + (3-nIeta); // x(module) = -z(SM)
682 // iphi - have to change from 1 to fNPhi*fNPHIdiv
683 iphi = (iphit-1)*fNPHIdiv + nIphi; // y(module) = y(SM)
1963b290 684}