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d15a28e7 | 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 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
d15a28e7 | 18 | //_________________________________________________________________________ |
b2a60966 | 19 | // Geometry class for PHOS : singleton |
a3dfe79c | 20 | // PHOS consists of the electromagnetic calorimeter (EMCA) |
21 | // and a charged particle veto either in the Subatech's version (PPSD) | |
22 | // or in the IHEP's one (CPV). | |
23 | // The EMCA/PPSD/CPV modules are parametrized so that any configuration | |
24 | // can be easily implemented | |
25 | // The title is used to identify the version of CPV used. | |
b2a60966 | 26 | // |
05d33a3d | 27 | // -- Author: Yves Schutz (SUBATECH) & Dmitri Peressounko (RRC "KI" & SUBATECH) |
d15a28e7 | 28 | |
29 | // --- ROOT system --- | |
30 | ||
31 | #include "TVector3.h" | |
32 | #include "TRotation.h" | |
e957fea8 | 33 | #include "TParticle.h" |
91daaf24 | 34 | #include <TGeoManager.h> |
268f57b1 | 35 | #include <TGeoMatrix.h> |
d15a28e7 | 36 | |
37 | // --- Standard library --- | |
38 | ||
d15a28e7 | 39 | // --- AliRoot header files --- |
351dd634 | 40 | #include "AliLog.h" |
d15a28e7 | 41 | #include "AliPHOSGeometry.h" |
468794ea | 42 | #include "AliPHOSEMCAGeometry.h" |
710f859a | 43 | #include "AliPHOSRecPoint.h" |
d15a28e7 | 44 | |
925e6570 | 45 | ClassImp(AliPHOSGeometry) |
d15a28e7 | 46 | |
a4e98857 | 47 | // these initialisations are needed for a singleton |
05d33a3d | 48 | AliPHOSGeometry * AliPHOSGeometry::fgGeom = 0 ; |
49 | Bool_t AliPHOSGeometry::fgInit = kFALSE ; | |
9ec91567 | 50 | |
e957fea8 | 51 | //____________________________________________________________________________ |
3663622c | 52 | AliPHOSGeometry::AliPHOSGeometry() : |
bcc9e89e | 53 | AliPHOSGeoUtils(), |
3663622c | 54 | fAngle(0.f), |
55 | fPHOSAngle(0), | |
56 | fIPtoUpperCPVsurface(0), | |
308fb942 | 57 | fCrystalShift(0), |
58 | fCryCellShift(0), | |
bcc9e89e | 59 | fRotMatrixArray(0) |
3663622c | 60 | { |
e957fea8 | 61 | // default ctor |
62 | // must be kept public for root persistency purposes, but should never be called by the outside world | |
e957fea8 | 63 | fgGeom = 0 ; |
6ba1dd81 | 64 | |
65 | fPHOSParams[0] = 0.; | |
66 | fPHOSParams[1] = 0.; | |
67 | fPHOSParams[2] = 0.; | |
68 | fPHOSParams[3] = 0.; | |
e957fea8 | 69 | } |
70 | ||
3663622c | 71 | //____________________________________________________________________________ |
72 | AliPHOSGeometry::AliPHOSGeometry(const AliPHOSGeometry & rhs) | |
bcc9e89e | 73 | : AliPHOSGeoUtils(rhs), |
3663622c | 74 | fAngle(rhs.fAngle), |
75 | fPHOSAngle(0), | |
76 | fIPtoUpperCPVsurface(rhs.fIPtoUpperCPVsurface), | |
308fb942 | 77 | fCrystalShift(rhs.fCrystalShift), |
78 | fCryCellShift(rhs.fCryCellShift), | |
bcc9e89e | 79 | fRotMatrixArray(0) |
3663622c | 80 | { |
81 | Fatal("cpy ctor", "not implemented") ; | |
82 | } | |
83 | ||
91daaf24 | 84 | //____________________________________________________________________________ |
3663622c | 85 | AliPHOSGeometry::AliPHOSGeometry(const Text_t* name, const Text_t* title) |
bcc9e89e | 86 | : AliPHOSGeoUtils(name, title), |
3663622c | 87 | fAngle(0.f), |
88 | fPHOSAngle(0), | |
89 | fIPtoUpperCPVsurface(0), | |
308fb942 | 90 | fCrystalShift(0), |
91 | fCryCellShift(0), | |
bcc9e89e | 92 | fRotMatrixArray(0) |
3663622c | 93 | { |
94 | // ctor only for internal usage (singleton) | |
95 | Init() ; | |
9a2cdbdf | 96 | fgGeom = this; |
3663622c | 97 | } |
98 | ||
d15a28e7 | 99 | //____________________________________________________________________________ |
100 | AliPHOSGeometry::~AliPHOSGeometry(void) | |
101 | { | |
b2a60966 | 102 | // dtor |
103 | ||
52a36ffd | 104 | if (fRotMatrixArray) fRotMatrixArray->Delete() ; |
105 | if (fRotMatrixArray) delete fRotMatrixArray ; | |
fa0bc588 | 106 | if (fPHOSAngle ) delete[] fPHOSAngle ; |
52a36ffd | 107 | } |
52a36ffd | 108 | |
91daaf24 | 109 | //____________________________________________________________________________ |
52a36ffd | 110 | void AliPHOSGeometry::Init(void) |
111 | { | |
a4e98857 | 112 | // Initializes the PHOS parameters : |
113 | // IHEP is the Protvino CPV (cathode pad chambers) | |
710f859a | 114 | |
115 | fgInit = kTRUE ; | |
05d33a3d | 116 | |
85698486 | 117 | fAngle = 20; |
05d33a3d | 118 | |
710f859a | 119 | |
120 | fPHOSAngle = new Float_t[fNModules] ; | |
121 | ||
a2bb6de5 | 122 | const Float_t * emcParams = fGeometryEMCA->GetEMCParams() ; |
710f859a | 123 | |
581e32d4 | 124 | fPHOSParams[0] = TMath::Max((Double_t)fGeometryCPV->GetCPVBoxSize(0)/2., |
a83b6179 | 125 | (Double_t)(emcParams[0] - (emcParams[1]-emcParams[0])* |
126 | fGeometryCPV->GetCPVBoxSize(1)/2/emcParams[3])); | |
710f859a | 127 | fPHOSParams[1] = emcParams[1] ; |
581e32d4 | 128 | fPHOSParams[2] = TMath::Max((Double_t)emcParams[2], (Double_t)fGeometryCPV->GetCPVBoxSize(2)/2.); |
710f859a | 129 | fPHOSParams[3] = emcParams[3] + fGeometryCPV->GetCPVBoxSize(1)/2. ; |
130 | ||
131 | fIPtoUpperCPVsurface = fGeometryEMCA->GetIPtoOuterCoverDistance() - fGeometryCPV->GetCPVBoxSize(1) ; | |
8e20650f | 132 | |
133 | //calculate offset to crystal surface | |
a2bb6de5 | 134 | const Float_t * inthermo = fGeometryEMCA->GetInnerThermoHalfSize() ; |
135 | const Float_t * strip = fGeometryEMCA->GetStripHalfSize() ; | |
136 | const Float_t * splate = fGeometryEMCA->GetSupportPlateHalfSize(); | |
137 | const Float_t * crystal = fGeometryEMCA->GetCrystalHalfSize() ; | |
138 | const Float_t * pin = fGeometryEMCA->GetAPDHalfSize() ; | |
139 | const Float_t * preamp = fGeometryEMCA->GetPreampHalfSize() ; | |
8e20650f | 140 | fCrystalShift=-inthermo[1]+strip[1]+splate[1]+crystal[1]-fGeometryEMCA->GetAirGapLed()/2.+pin[1]+preamp[1] ; |
141 | fCryCellShift=crystal[1]-(fGeometryEMCA->GetAirGapLed()-2*pin[1]-2*preamp[1])/2; | |
142 | ||
710f859a | 143 | Int_t index ; |
144 | for ( index = 0; index < fNModules; index++ ) | |
52a36ffd | 145 | fPHOSAngle[index] = 0.0 ; // Module position angles are set in CreateGeometry() |
710f859a | 146 | |
710f859a | 147 | fRotMatrixArray = new TObjArray(fNModules) ; |
05d33a3d | 148 | |
85698486 | 149 | // Geometry parameters are calculated |
150 | ||
151 | SetPHOSAngles(); | |
152 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; | |
153 | Float_t r = GetIPtoOuterCoverDistance() + fPHOSParams[3] - GetCPVBoxSize(1) ; | |
154 | for (Int_t iModule=0; iModule<fNModules; iModule++) { | |
155 | fModuleCenter[iModule][0] = r * TMath::Sin(fPHOSAngle[iModule] / kRADDEG ); | |
156 | fModuleCenter[iModule][1] =-r * TMath::Cos(fPHOSAngle[iModule] / kRADDEG ); | |
157 | fModuleCenter[iModule][2] = 0.; | |
158 | ||
159 | fModuleAngle[iModule][0][0] = 90; | |
160 | fModuleAngle[iModule][0][1] = fPHOSAngle[iModule]; | |
161 | fModuleAngle[iModule][1][0] = 0; | |
162 | fModuleAngle[iModule][1][1] = 0; | |
163 | fModuleAngle[iModule][2][0] = 90; | |
164 | fModuleAngle[iModule][2][1] = 270 + fPHOSAngle[iModule]; | |
05d33a3d | 165 | } |
166 | ||
52a36ffd | 167 | } |
168 | ||
169 | //____________________________________________________________________________ | |
170 | AliPHOSGeometry * AliPHOSGeometry::GetInstance() | |
171 | { | |
a4e98857 | 172 | // Returns the pointer of the unique instance; singleton specific |
173 | ||
809cd394 | 174 | return static_cast<AliPHOSGeometry *>( fgGeom ) ; |
52a36ffd | 175 | } |
176 | ||
177 | //____________________________________________________________________________ | |
178 | AliPHOSGeometry * AliPHOSGeometry::GetInstance(const Text_t* name, const Text_t* title) | |
179 | { | |
180 | // Returns the pointer of the unique instance | |
a4e98857 | 181 | // Creates it with the specified options (name, title) if it does not exist yet |
182 | ||
52a36ffd | 183 | AliPHOSGeometry * rv = 0 ; |
184 | if ( fgGeom == 0 ) { | |
185 | if ( strcmp(name,"") == 0 ) | |
186 | rv = 0 ; | |
187 | else { | |
188 | fgGeom = new AliPHOSGeometry(name, title) ; | |
189 | if ( fgInit ) | |
190 | rv = (AliPHOSGeometry * ) fgGeom ; | |
191 | else { | |
192 | rv = 0 ; | |
193 | delete fgGeom ; | |
194 | fgGeom = 0 ; | |
195 | } | |
196 | } | |
197 | } | |
198 | else { | |
21cd0c07 | 199 | if ( strcmp(fgGeom->GetName(), name) != 0 ) |
351dd634 | 200 | ::Error("GetInstance", "Current geometry is %s. You cannot call %s", |
201 | fgGeom->GetName(), name) ; | |
52a36ffd | 202 | else |
203 | rv = (AliPHOSGeometry *) fgGeom ; | |
204 | } | |
205 | return rv ; | |
206 | } | |
4697edca | 207 | |
52a36ffd | 208 | //____________________________________________________________________________ |
209 | void AliPHOSGeometry::SetPHOSAngles() | |
210 | { | |
a4e98857 | 211 | // Calculates the position of the PHOS modules in ALICE global coordinate system |
91daaf24 | 212 | // in ideal geometry |
52a36ffd | 213 | |
a8c47ab6 | 214 | Double_t const kRADDEG = 180.0 / TMath::Pi() ; |
710f859a | 215 | Float_t pphi = 2 * TMath::ATan( GetOuterBoxSize(0) / ( 2.0 * GetIPtoUpperCPVsurface() ) ) ; |
52a36ffd | 216 | pphi *= kRADDEG ; |
710f859a | 217 | if (pphi > fAngle){ |
351dd634 | 218 | AliError(Form("PHOS modules overlap!\n pphi = %f fAngle = %f", |
219 | pphi, fAngle)); | |
710f859a | 220 | |
221 | } | |
ed4205d8 | 222 | pphi = fAngle; |
52a36ffd | 223 | |
224 | for( Int_t i = 1; i <= fNModules ; i++ ) { | |
ed4205d8 | 225 | Float_t angle = pphi * ( i - fNModules / 2.0 - 0.5 ) ; |
52a36ffd | 226 | fPHOSAngle[i-1] = - angle ; |
227 | } | |
d15a28e7 | 228 | } |
9f616d61 | 229 | //____________________________________________________________________________ |
308fb942 | 230 | void AliPHOSGeometry::GetGlobal(const AliRecPoint* , TVector3 & ) const |
9ee9f78d | 231 | { |
232 | AliFatal(Form("Please use GetGlobalPHOS(recPoint,gpos) instead of GetGlobal!")); | |
233 | } | |
234 | ||
235 | //____________________________________________________________________________ | |
236 | void AliPHOSGeometry::GetGlobalPHOS(const AliPHOSRecPoint* recPoint, TVector3 & gpos) const | |
d15a28e7 | 237 | { |
a4e98857 | 238 | // Calculates the coordinates of a RecPoint and the error matrix in the ALICE global coordinate system |
b2a60966 | 239 | |
9ee9f78d | 240 | const AliPHOSRecPoint * tmpPHOS = recPoint ; |
92862013 | 241 | TVector3 localposition ; |
d15a28e7 | 242 | |
243 | tmpPHOS->GetLocalPosition(gpos) ; | |
244 | ||
91daaf24 | 245 | if (!gGeoManager){ |
246 | AliFatal("Geo manager not initialized\n"); | |
d15a28e7 | 247 | } |
91daaf24 | 248 | //construct module name |
249 | char path[100] ; | |
250 | Double_t dy ; | |
251 | if(tmpPHOS->IsEmc()){ | |
6ba1dd81 | 252 | TString spath="/ALIC_1/PHOS_%d/PEMC_1/PCOL_1/PTIO_1/PCOR_1/PAGA_1/PTII_1"; |
253 | snprintf(path,spath.Length(),spath.Data(),tmpPHOS->GetPHOSMod()) ; | |
8e20650f | 254 | // sprintf(path,"/ALIC_1/PHOS_%d",tmpPHOS->GetPHOSMod()) ; |
255 | dy=fCrystalShift ; | |
d15a28e7 | 256 | } |
91daaf24 | 257 | else{ |
6ba1dd81 | 258 | TString spath="/ALIC_1/PHOS_%d/PCPV_1"; |
259 | snprintf(path,spath.Length(),spath.Data(),tmpPHOS->GetPHOSMod()) ; | |
91daaf24 | 260 | dy= GetCPVBoxSize(1)/2. ; //center of CPV module |
261 | } | |
262 | Double_t pos[3]={gpos.X(),gpos.Y()-dy,gpos.Z()} ; | |
8e20650f | 263 | if(tmpPHOS->IsEmc()) |
264 | pos[2]=-pos[2] ; //Opposite z directions in EMC matrix and local frame!!! | |
6ba1dd81 | 265 | Double_t posC[3] = {}; |
91daaf24 | 266 | //now apply possible shifts and rotations |
267 | if (!gGeoManager->cd(path)){ | |
268 | AliFatal("Geo manager can not find path \n"); | |
269 | } | |
270 | TGeoHMatrix *m = gGeoManager->GetCurrentMatrix(); | |
8e20650f | 271 | if (m){ |
272 | m->LocalToMaster(pos,posC); | |
273 | } | |
91daaf24 | 274 | else{ |
275 | AliFatal("Geo matrixes are not loaded \n") ; | |
276 | } | |
8e20650f | 277 | gpos.SetXYZ(posC[0],posC[1],posC[2]) ; |
7b51037f | 278 | |
aa35fc01 | 279 | } |
aa0b9641 | 280 | //____________________________________________________________________________ |
281 | ||
7b51037f | 282 | void AliPHOSGeometry::GetModuleCenter(TVector3& center, |
283 | const char *det, | |
284 | Int_t module) const | |
aa0b9641 | 285 | { |
bfc17d18 | 286 | // Returns a position of the center of the CPV or EMC module |
91daaf24 | 287 | // in ideal (not misaligned) geometry |
1504ac47 | 288 | Float_t rDet = 0.; |
e77bb310 | 289 | if (strcmp(det,"CPV") == 0) rDet = GetIPtoCPVDistance (); |
290 | else if (strcmp(det,"EMC") == 0) rDet = GetIPtoCrystalSurface(); | |
351dd634 | 291 | else |
292 | AliFatal(Form("Wrong detector name %s",det)); | |
bfc17d18 | 293 | |
395f4eea | 294 | Float_t angle = GetPHOSAngle(module); // (40,20,0,-20,-40) degrees |
295 | angle *= TMath::Pi()/180; | |
296 | angle += 3*TMath::Pi()/2.; | |
7b51037f | 297 | center.SetXYZ(rDet*TMath::Cos(angle), rDet*TMath::Sin(angle), 0.); |
aa0b9641 | 298 | } |
299 |