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1963b290 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2004, 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 | ||
25ab8a31 | 18 | //_________________________________________________________________________ |
19 | // Main class for TRD1 geometry of Shish-Kebab case. | |
20 | // Author: Aleksei Pavlinov(WSU). | |
1d46d1f6 | 21 | // Sep 20004 - Nov 2006 |
25ab8a31 | 22 | // See web page with description of Shish-Kebab geometries: |
23 | // http://pdsfweb01.nersc.gov/~pavlinov/ALICE/SHISHKEBAB/RES/shishkebabALICE.html | |
1ae500a2 | 24 | // Nov 9,2006 - added case of 3X3 |
25ab8a31 | 25 | //_________________________________________________________________________ |
1963b290 | 26 | |
b42d4197 | 27 | #include "AliLog.h" |
1963b290 | 28 | #include "AliEMCALShishKebabTrd1Module.h" |
1963b290 | 29 | #include "AliEMCALGeometry.h" |
30 | ||
60d70c4d | 31 | #include <assert.h> |
32 | ||
25ab8a31 | 33 | #include <Riostream.h> |
e52475ed | 34 | |
1963b290 | 35 | ClassImp(AliEMCALShishKebabTrd1Module) |
36 | ||
37 | AliEMCALGeometry *AliEMCALShishKebabTrd1Module::fgGeometry=0; | |
38 | Double_t AliEMCALShishKebabTrd1Module::fga=0.; | |
39 | Double_t AliEMCALShishKebabTrd1Module::fga2=0.; | |
40 | Double_t AliEMCALShishKebabTrd1Module::fgb=0.; | |
41 | Double_t AliEMCALShishKebabTrd1Module::fgr=0.; | |
e52475ed | 42 | Double_t AliEMCALShishKebabTrd1Module::fgangle=0.; // around one degree |
1963b290 | 43 | Double_t AliEMCALShishKebabTrd1Module::fgtanBetta=0; // |
44 | ||
0a4cb131 | 45 | //_____________________________________________________________________________ |
18a21c7c | 46 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(Double_t theta, AliEMCALGeometry *g) |
47 | : TNamed(), | |
48 | fOK(), | |
49 | fA(0.), | |
50 | fB(0.), | |
51 | fThetaA(0.), | |
52 | fTheta(theta), | |
53 | fOK1(), | |
54 | fOK2(), | |
55 | fOB(), | |
56 | fOB1(), | |
1d46d1f6 | 57 | fOB2(), |
1ae500a2 | 58 | fThetaOB1(0.), |
59 | fThetaOB2(0.), | |
1d46d1f6 | 60 | fOK3X3() |
25ab8a31 | 61 | { |
62 | // theta in radians ; first object shold be with theta=pi/2. | |
1963b290 | 63 | if(fgGeometry==0) { |
25ab8a31 | 64 | fTheta = TMath::PiOver2(); |
e52475ed | 65 | fgGeometry = g; |
1963b290 | 66 | if(GetParameters()) { |
67 | DefineFirstModule(); | |
68 | } | |
69 | } else Warning("AliEMCALShishKebabTrd1Module(theta)","You should call this constractor just once !!"); | |
70 | DefineName(fTheta); | |
b42d4197 | 71 | AliInfo(Form("AliEMCALShishKebabTrd1Module - first module: theta %1.4f geometry %s",fTheta,g->GetName())); |
1963b290 | 72 | } |
73 | ||
0a4cb131 | 74 | //_____________________________________________________________________________ |
18a21c7c | 75 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor) |
76 | : TNamed(), | |
77 | fOK(), | |
78 | fA(0.), | |
79 | fB(0.), | |
80 | fThetaA(0.), | |
81 | fTheta(0.), | |
82 | fOK1(), | |
83 | fOK2(), | |
84 | fOB(), | |
85 | fOB1(), | |
1d46d1f6 | 86 | fOB2(), |
1ae500a2 | 87 | fThetaOB1(0.), |
88 | fThetaOB2(0.), | |
1d46d1f6 | 89 | fOK3X3() |
25ab8a31 | 90 | { |
1963b290 | 91 | // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName()); |
1963b290 | 92 | fTheta = leftNeighbor.GetTheta() - fgangle; |
1d46d1f6 | 93 | |
94 | TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1); | |
95 | ||
1963b290 | 96 | Init(leftNeighbor.GetA(),leftNeighbor.GetB()); |
97 | } | |
98 | ||
0a4cb131 | 99 | //________________________________________________________________ |
18a21c7c | 100 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod) |
101 | : TNamed(mod.GetName(),mod.GetTitle()), | |
102 | fOK(mod.fOK), | |
103 | fA(mod.fA), | |
104 | fB(mod.fB), | |
105 | fThetaA(mod.fThetaA), | |
106 | fTheta(mod.fTheta), | |
107 | fOK1(mod.fOK1), | |
108 | fOK2(mod.fOK2), | |
109 | fOB(mod.fOB), | |
110 | fOB1(mod.fOB1), | |
60d70c4d | 111 | fOB2(mod.fOB2), |
112 | fThetaOB1(mod.fThetaOB1), | |
113 | fThetaOB2(mod.fThetaOB2) | |
0a4cb131 | 114 | { |
115 | //copy ctor | |
3f66111e | 116 | for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i]; |
0a4cb131 | 117 | } |
118 | ||
119 | //________________________________________________________________ | |
25ab8a31 | 120 | void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B) |
121 | { | |
122 | // Define parameter module from parameters A,B from previos. | |
1963b290 | 123 | Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl; |
124 | Double_t xl = (yl - B) / A; // y=A*x+B | |
125 | ||
126 | // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta)); | |
127 | // printf(" xp1 %9.3f \n ", xp1); | |
128 | // xp1 == xp => both methods give the same results - 3-feb-05 | |
129 | Double_t alpha = TMath::Pi()/2. + fgangle/2; | |
130 | Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha))); | |
131 | Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt); | |
132 | Double_t x = xl + xp; | |
133 | fOK.Set(x, y); | |
134 | // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp); | |
135 | ||
136 | // have to define A and B; | |
137 | Double_t yCprev = fgr + fga*TMath::Cos(fTheta); | |
138 | Double_t xCprev = (yCprev - B) / A; | |
139 | Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr; | |
140 | ||
141 | fThetaA = fTheta - fgangle/2.; | |
142 | fA = TMath::Tan(fThetaA); // !! | |
143 | fB = yA - fA*xA; | |
144 | ||
1d46d1f6 | 145 | DefineAllStaff(); |
146 | } | |
147 | ||
148 | void AliEMCALShishKebabTrd1Module::DefineAllStaff() | |
149 | { | |
1963b290 | 150 | DefineName(fTheta); |
1ae500a2 | 151 | // Centers of cells - 2X2 case |
1963b290 | 152 | Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2 |
153 | ||
154 | Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta); | |
e52475ed | 155 | Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr; |
1963b290 | 156 | fOK1.Set(xk1,yk1); |
157 | ||
158 | Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta); | |
e52475ed | 159 | Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr; |
1963b290 | 160 | fOK2.Set(xk2,yk2); |
b44d5aa4 | 161 | |
1ae500a2 | 162 | // Centers of cells - 3X3 case; Nov 9,2006 |
1d46d1f6 | 163 | fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center |
164 | ||
165 | kk1 = ((fga+fga2)/4. + fga/6.)/2.; | |
166 | ||
167 | xk1 = fOK.X() - kk1*TMath::Sin(fTheta); | |
168 | yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr; | |
169 | fOK3X3[0].Set(xk1,yk1); | |
170 | ||
171 | xk2 = fOK.X() + kk1*TMath::Sin(fTheta); | |
172 | yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr; | |
173 | fOK3X3[2].Set(xk2,yk2); | |
174 | ||
1ae500a2 | 175 | // May 15, 2006; position of module(cells) center face |
b44d5aa4 | 176 | fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr); |
177 | fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta)); | |
178 | fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta)); | |
1ae500a2 | 179 | // Jul 30, 2007 - for taking into account a position of shower maximum |
180 | fThetaOB1 = fTheta - fgangle/4.; // ?? | |
181 | fThetaOB2 = fTheta + fgangle/4.; | |
1963b290 | 182 | } |
183 | ||
0a4cb131 | 184 | //_____________________________________________________________________________ |
1963b290 | 185 | void AliEMCALShishKebabTrd1Module::DefineFirstModule() |
186 | { | |
25ab8a31 | 187 | // Define first module |
1963b290 | 188 | fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o |
189 | ||
190 | // parameters of right line : y = A*z + B in system where zero point is IP. | |
191 | fThetaA = fTheta - fgangle/2.; | |
192 | fA = TMath::Tan(fThetaA); | |
193 | Double_t xA = fga/2. + fga2/2., yA = fgr; | |
194 | fB = yA - fA*xA; | |
195 | ||
1963b290 | 196 | TObject::SetUniqueID(1); // |
1d46d1f6 | 197 | |
198 | DefineAllStaff(); | |
1963b290 | 199 | } |
200 | ||
0a4cb131 | 201 | //_____________________________________________________________________________ |
25ab8a31 | 202 | void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta) |
1963b290 | 203 | { |
25ab8a31 | 204 | // Define name of object |
205 | SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg())); | |
1963b290 | 206 | } |
207 | ||
0a4cb131 | 208 | //_____________________________________________________________________________ |
1963b290 | 209 | Bool_t AliEMCALShishKebabTrd1Module::GetParameters() |
210 | { | |
25ab8a31 | 211 | // Get needing module parameters from EMCAL geometry |
e52475ed | 212 | if(!fgGeometry) fgGeometry = AliEMCALGeometry::GetInstance(); |
1963b290 | 213 | TString sn(fgGeometry->GetName()); // 2-Feb-05 |
214 | sn.ToUpper(); | |
215 | if(!fgGeometry) { | |
216 | Warning("GetParameters()"," No geometry "); | |
217 | return kFALSE; | |
218 | } | |
219 | ||
220 | fga = (Double_t)fgGeometry->GetEtaModuleSize(); | |
221 | fgb = (Double_t)fgGeometry->GetLongModuleSize(); | |
222 | fgangle = Double_t(fgGeometry->GetTrd1Angle())*TMath::DegToRad(); | |
223 | fgtanBetta = TMath::Tan(fgangle/2.); | |
224 | fgr = (Double_t)fgGeometry->GetIPDistance(); | |
1d46d1f6 | 225 | |
1963b290 | 226 | if(!sn.Contains("TRD2")) fgr += fgGeometry->GetSteelFrontThickness(); |
1d46d1f6 | 227 | |
1963b290 | 228 | fga2 = Double_t(fgGeometry->Get2Trd1Dx2()); |
c4a57092 | 229 | //PH PrintShish(0); |
1963b290 | 230 | return kTRUE; |
231 | } | |
232 | ||
233 | // service methods | |
0a4cb131 | 234 | //_____________________________________________________________________________ |
c63c3c5d | 235 | void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const |
1963b290 | 236 | { |
25ab8a31 | 237 | // service method |
1963b290 | 238 | if(pri>=0) { |
b44d5aa4 | 239 | printf("PrintShish() \n a %7.3f:%7.3f | b %7.2f | r %7.2f \n TRD1 angle %7.6f(%5.2f) | tanBetta %7.6f", |
1963b290 | 240 | fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta); |
241 | printf(" fTheta %f : %5.2f : cos(theta) %f\n", | |
242 | fTheta, GetThetaInDegree(),TMath::Cos(fTheta)); | |
e52475ed | 243 | if(pri>=1) { |
b44d5aa4 | 244 | printf(" %i |%s| theta %f : fOK.Phi = %f(%5.2f)\n", |
1963b290 | 245 | GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg()); |
246 | printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg()); | |
1d46d1f6 | 247 | printf(" fOK : X %9.4f: Y %9.4f : eta %5.3f\n", fOK.X(), fOK.Y(), GetEtaOfCenterOfModule()); |
248 | printf(" fOK1 : X %9.4f: Y %9.4f : (local, ieta=2)\n", fOK1.X(), fOK1.Y()); | |
249 | printf(" fOK2 : X %9.4f: Y %9.4f : (local, ieta=1)\n\n", fOK2.X(), fOK2.Y()); | |
b44d5aa4 | 250 | printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y()); |
251 | printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y()); | |
252 | printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y()); | |
1d46d1f6 | 253 | // 3X3 |
254 | printf(" 3X3 \n"); | |
255 | for(int ieta=0; ieta<3; ieta++) { | |
256 | printf(" fOK3X3[%i] : X %9.4f: Y %9.4f (local) \n", ieta, fOK3X3[ieta].X(), fOK3X3[ieta].Y()); | |
257 | } | |
b44d5aa4 | 258 | // fOK.Dump(); |
1d46d1f6 | 259 | GetMaxEtaOfModule(pri); |
1963b290 | 260 | } |
261 | } | |
262 | } | |
25ab8a31 | 263 | |
0a4cb131 | 264 | //_____________________________________________________________________________ |
25ab8a31 | 265 | Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const |
266 | { | |
267 | return fTheta*TMath::RadToDeg(); | |
268 | } | |
269 | ||
0a4cb131 | 270 | //_____________________________________________________________________________ |
25ab8a31 | 271 | Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const |
272 | { | |
273 | return -TMath::Log(TMath::Tan(fOK.Phi()/2.)); | |
274 | } | |
1d46d1f6 | 275 | |
1ae500a2 | 276 | void AliEMCALShishKebabTrd1Module::GetPositionAtCenterCellLine(Int_t ieta, Double_t dist, TVector2 &v) |
277 | { | |
278 | // Jul 30, 2007 | |
279 | static Double_t theta=0., x=0., y=0.; | |
280 | if(ieta==0) { | |
281 | v = fOB2; | |
282 | theta = fThetaOB2; | |
283 | } else if(ieta==1) { | |
284 | v = fOB1; | |
285 | theta = fThetaOB1; | |
286 | } else { | |
287 | assert(0); | |
288 | } | |
289 | x = v.X() + TMath::Cos(theta) * dist; | |
290 | y = v.Y() + TMath::Sin(theta) * dist; | |
291 | v.Set(x,y); | |
292 | //printf(" GetPositionAtCenterCellLine() : dist %f : ieta %i : x %f | y %f \n", dist, ieta, x, y); | |
293 | } | |
294 | ||
295 | ||
1d46d1f6 | 296 | //_____________________________________________________________________________ |
297 | Double_t AliEMCALShishKebabTrd1Module::GetMaxEtaOfModule(int pri) const | |
298 | { | |
299 | // Right bottom point of module | |
300 | Double_t xBottom = (fgr - fB) / fA; | |
301 | Double_t thetaBottom = TMath::ATan2(fgr, xBottom); | |
302 | Double_t etaBottom = ThetaToEta(thetaBottom); | |
303 | // Right top point of module | |
304 | Double_t l = fgb / TMath::Cos(fgangle/2.); // length of lateral module side | |
305 | Double_t xTop = xBottom + l*TMath::Cos(TMath::ATan(fA)); | |
306 | Double_t yTop = fA*xTop + fB; | |
307 | Double_t thetaTop = TMath::ATan2(yTop, xTop); | |
308 | Double_t etaTop = ThetaToEta(thetaTop); | |
309 | ||
310 | if(pri) { | |
311 | printf(" Right bottom point of module : eta %5.4f : theta %6.4f (%6.2f) \n", | |
312 | etaBottom, thetaBottom, thetaBottom * TMath::RadToDeg()); | |
313 | printf(" Right top point of module : eta %5.4f : theta %6.4f (%6.2f) \n", | |
314 | etaTop, thetaTop, thetaTop * TMath::RadToDeg()); | |
315 | } | |
316 | return etaBottom>etaTop ? etaBottom : etaTop; | |
317 | } |