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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" |
0c5b726e | 29 | #include "AliEMCALEMCGeometry.h" |
1963b290 | 30 | |
d1f9a8ab | 31 | #include <cassert> |
60d70c4d | 32 | |
1963b290 | 33 | ClassImp(AliEMCALShishKebabTrd1Module) |
34 | ||
7cfcebd3 | 35 | //AliEMCALEMCGeometry *AliEMCALShishKebabTrd1Module::fgGeometry=0; |
1963b290 | 36 | Double_t AliEMCALShishKebabTrd1Module::fga=0.; |
37 | Double_t AliEMCALShishKebabTrd1Module::fga2=0.; | |
38 | Double_t AliEMCALShishKebabTrd1Module::fgb=0.; | |
39 | Double_t AliEMCALShishKebabTrd1Module::fgr=0.; | |
e52475ed | 40 | Double_t AliEMCALShishKebabTrd1Module::fgangle=0.; // around one degree |
1963b290 | 41 | Double_t AliEMCALShishKebabTrd1Module::fgtanBetta=0; // |
42 | ||
0a4cb131 | 43 | //_____________________________________________________________________________ |
0c5b726e | 44 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(Double_t theta, AliEMCALEMCGeometry *g) |
18a21c7c | 45 | : TNamed(), |
7cfcebd3 | 46 | fGeometry(g), |
18a21c7c | 47 | fOK(), |
48 | fA(0.), | |
49 | fB(0.), | |
50 | fThetaA(0.), | |
51 | fTheta(theta), | |
52 | fOK1(), | |
53 | fOK2(), | |
54 | fOB(), | |
55 | fOB1(), | |
1d46d1f6 | 56 | fOB2(), |
1ae500a2 | 57 | fThetaOB1(0.), |
58 | fThetaOB2(0.), | |
d1ccaddd | 59 | fOK3X3(), |
60 | fORB(), | |
61 | fORT() | |
25ab8a31 | 62 | { |
63 | // theta in radians ; first object shold be with theta=pi/2. | |
7cfcebd3 | 64 | fTheta = TMath::PiOver2(); |
65 | if(GetParameters()) { | |
66 | DefineFirstModule(); | |
67 | } | |
1963b290 | 68 | DefineName(fTheta); |
916f1e76 | 69 | AliDebug(1,Form("AliEMCALShishKebabTrd1Module - first module: theta %1.4f geometry %s",fTheta,g->GetName())); |
1963b290 | 70 | } |
71 | ||
0a4cb131 | 72 | //_____________________________________________________________________________ |
18a21c7c | 73 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor) |
74 | : TNamed(), | |
7cfcebd3 | 75 | fGeometry(leftNeighbor.fGeometry), |
18a21c7c | 76 | fOK(), |
77 | fA(0.), | |
78 | fB(0.), | |
79 | fThetaA(0.), | |
80 | fTheta(0.), | |
81 | fOK1(), | |
82 | fOK2(), | |
83 | fOB(), | |
84 | fOB1(), | |
1d46d1f6 | 85 | fOB2(), |
1ae500a2 | 86 | fThetaOB1(0.), |
87 | fThetaOB2(0.), | |
d1ccaddd | 88 | fOK3X3(), |
89 | fORB(), | |
90 | fORT() | |
25ab8a31 | 91 | { |
1963b290 | 92 | // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName()); |
1963b290 | 93 | fTheta = leftNeighbor.GetTheta() - fgangle; |
1d46d1f6 | 94 | |
95 | TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1); | |
96 | ||
1963b290 | 97 | Init(leftNeighbor.GetA(),leftNeighbor.GetB()); |
98 | } | |
99 | ||
0a4cb131 | 100 | //________________________________________________________________ |
18a21c7c | 101 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod) |
102 | : TNamed(mod.GetName(),mod.GetTitle()), | |
7cfcebd3 | 103 | fGeometry(mod.fGeometry), |
18a21c7c | 104 | fOK(mod.fOK), |
105 | fA(mod.fA), | |
106 | fB(mod.fB), | |
107 | fThetaA(mod.fThetaA), | |
108 | fTheta(mod.fTheta), | |
109 | fOK1(mod.fOK1), | |
110 | fOK2(mod.fOK2), | |
111 | fOB(mod.fOB), | |
112 | fOB1(mod.fOB1), | |
60d70c4d | 113 | fOB2(mod.fOB2), |
114 | fThetaOB1(mod.fThetaOB1), | |
d1ccaddd | 115 | fThetaOB2(mod.fThetaOB2), |
116 | fORB(mod.fORB), | |
117 | fORT(mod.fORT) | |
0a4cb131 | 118 | { |
119 | //copy ctor | |
3f66111e | 120 | for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i]; |
0a4cb131 | 121 | } |
122 | ||
123 | //________________________________________________________________ | |
25ab8a31 | 124 | void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B) |
125 | { | |
126 | // Define parameter module from parameters A,B from previos. | |
1963b290 | 127 | Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl; |
128 | Double_t xl = (yl - B) / A; // y=A*x+B | |
129 | ||
130 | // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta)); | |
131 | // printf(" xp1 %9.3f \n ", xp1); | |
132 | // xp1 == xp => both methods give the same results - 3-feb-05 | |
133 | Double_t alpha = TMath::Pi()/2. + fgangle/2; | |
134 | Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha))); | |
135 | Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt); | |
136 | Double_t x = xl + xp; | |
137 | fOK.Set(x, y); | |
138 | // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp); | |
139 | ||
140 | // have to define A and B; | |
141 | Double_t yCprev = fgr + fga*TMath::Cos(fTheta); | |
142 | Double_t xCprev = (yCprev - B) / A; | |
143 | Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr; | |
144 | ||
145 | fThetaA = fTheta - fgangle/2.; | |
146 | fA = TMath::Tan(fThetaA); // !! | |
147 | fB = yA - fA*xA; | |
148 | ||
1d46d1f6 | 149 | DefineAllStaff(); |
150 | } | |
151 | ||
152 | void AliEMCALShishKebabTrd1Module::DefineAllStaff() | |
153 | { | |
0c5b726e | 154 | //Define some parameters |
1963b290 | 155 | DefineName(fTheta); |
1ae500a2 | 156 | // Centers of cells - 2X2 case |
1963b290 | 157 | Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2 |
158 | ||
159 | Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta); | |
e52475ed | 160 | Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr; |
1963b290 | 161 | fOK1.Set(xk1,yk1); |
162 | ||
163 | Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta); | |
e52475ed | 164 | Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr; |
1963b290 | 165 | fOK2.Set(xk2,yk2); |
b44d5aa4 | 166 | |
1ae500a2 | 167 | // Centers of cells - 3X3 case; Nov 9,2006 |
1d46d1f6 | 168 | fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center |
169 | ||
170 | kk1 = ((fga+fga2)/4. + fga/6.)/2.; | |
171 | ||
172 | xk1 = fOK.X() - kk1*TMath::Sin(fTheta); | |
173 | yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr; | |
174 | fOK3X3[0].Set(xk1,yk1); | |
175 | ||
176 | xk2 = fOK.X() + kk1*TMath::Sin(fTheta); | |
177 | yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr; | |
178 | fOK3X3[2].Set(xk2,yk2); | |
179 | ||
1ae500a2 | 180 | // May 15, 2006; position of module(cells) center face |
b44d5aa4 | 181 | fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr); |
182 | fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta)); | |
183 | fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta)); | |
1ae500a2 | 184 | // Jul 30, 2007 - for taking into account a position of shower maximum |
185 | fThetaOB1 = fTheta - fgangle/4.; // ?? | |
186 | fThetaOB2 = fTheta + fgangle/4.; | |
d1ccaddd | 187 | |
188 | // Position of right/top point of module | |
189 | // Gives the posibility to estimate SM size in z direction | |
190 | Double_t xBottom = (fgr - fB) / fA; | |
191 | Double_t yBottom = fgr; | |
192 | fORB.Set(xBottom, yBottom); | |
193 | ||
194 | Double_t l = fgb / TMath::Cos(fgangle/2.); // length of lateral module side | |
195 | Double_t xTop = xBottom + l*TMath::Cos(TMath::ATan(fA)); | |
196 | Double_t yTop = fA*xTop + fB; | |
197 | fORT.Set(xTop, yTop); | |
1963b290 | 198 | } |
199 | ||
0a4cb131 | 200 | //_____________________________________________________________________________ |
1963b290 | 201 | void AliEMCALShishKebabTrd1Module::DefineFirstModule() |
202 | { | |
25ab8a31 | 203 | // Define first module |
1963b290 | 204 | fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o |
205 | ||
206 | // parameters of right line : y = A*z + B in system where zero point is IP. | |
207 | fThetaA = fTheta - fgangle/2.; | |
208 | fA = TMath::Tan(fThetaA); | |
209 | Double_t xA = fga/2. + fga2/2., yA = fgr; | |
210 | fB = yA - fA*xA; | |
211 | ||
1963b290 | 212 | TObject::SetUniqueID(1); // |
1d46d1f6 | 213 | |
214 | DefineAllStaff(); | |
1963b290 | 215 | } |
216 | ||
0a4cb131 | 217 | //_____________________________________________________________________________ |
25ab8a31 | 218 | void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta) |
1963b290 | 219 | { |
25ab8a31 | 220 | // Define name of object |
221 | SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg())); | |
1963b290 | 222 | } |
223 | ||
0a4cb131 | 224 | //_____________________________________________________________________________ |
1963b290 | 225 | Bool_t AliEMCALShishKebabTrd1Module::GetParameters() |
226 | { | |
0c5b726e | 227 | |
228 | // Get needing module parameters from EMCAL geometry | |
7cfcebd3 | 229 | TString sn(fGeometry->GetName()); // 2-Feb-05 |
1963b290 | 230 | sn.ToUpper(); |
7cfcebd3 | 231 | if(!fGeometry) { |
1963b290 | 232 | Warning("GetParameters()"," No geometry "); |
233 | return kFALSE; | |
234 | } | |
0c5b726e | 235 | |
1963b290 | 236 | |
7cfcebd3 | 237 | fga = (Double_t)fGeometry->GetEtaModuleSize(); |
238 | fgb = (Double_t)fGeometry->GetLongModuleSize(); | |
239 | fgangle = Double_t(fGeometry->GetTrd1Angle())*TMath::DegToRad(); | |
1963b290 | 240 | fgtanBetta = TMath::Tan(fgangle/2.); |
7cfcebd3 | 241 | fgr = (Double_t)fGeometry->GetIPDistance(); |
1d46d1f6 | 242 | |
7cfcebd3 | 243 | fgr += fGeometry->GetSteelFrontThickness(); |
1d46d1f6 | 244 | |
7cfcebd3 | 245 | fga2 = Double_t(fGeometry->Get2Trd1Dx2()); |
c4a57092 | 246 | //PH PrintShish(0); |
1963b290 | 247 | return kTRUE; |
248 | } | |
249 | ||
250 | // service methods | |
0a4cb131 | 251 | //_____________________________________________________________________________ |
c63c3c5d | 252 | void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const |
1963b290 | 253 | { |
25ab8a31 | 254 | // service method |
1963b290 | 255 | if(pri>=0) { |
b44d5aa4 | 256 | 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 | 257 | fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta); |
258 | printf(" fTheta %f : %5.2f : cos(theta) %f\n", | |
259 | fTheta, GetThetaInDegree(),TMath::Cos(fTheta)); | |
e52475ed | 260 | if(pri>=1) { |
b44d5aa4 | 261 | printf(" %i |%s| theta %f : fOK.Phi = %f(%5.2f)\n", |
1963b290 | 262 | GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg()); |
263 | printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg()); | |
1d46d1f6 | 264 | printf(" fOK : X %9.4f: Y %9.4f : eta %5.3f\n", fOK.X(), fOK.Y(), GetEtaOfCenterOfModule()); |
265 | printf(" fOK1 : X %9.4f: Y %9.4f : (local, ieta=2)\n", fOK1.X(), fOK1.Y()); | |
266 | printf(" fOK2 : X %9.4f: Y %9.4f : (local, ieta=1)\n\n", fOK2.X(), fOK2.Y()); | |
b44d5aa4 | 267 | printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y()); |
268 | printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y()); | |
269 | printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y()); | |
1d46d1f6 | 270 | // 3X3 |
271 | printf(" 3X3 \n"); | |
272 | for(int ieta=0; ieta<3; ieta++) { | |
273 | printf(" fOK3X3[%i] : X %9.4f: Y %9.4f (local) \n", ieta, fOK3X3[ieta].X(), fOK3X3[ieta].Y()); | |
274 | } | |
b44d5aa4 | 275 | // fOK.Dump(); |
1d46d1f6 | 276 | GetMaxEtaOfModule(pri); |
1963b290 | 277 | } |
278 | } | |
279 | } | |
25ab8a31 | 280 | |
0a4cb131 | 281 | //_____________________________________________________________________________ |
25ab8a31 | 282 | Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const |
283 | { | |
284 | return fTheta*TMath::RadToDeg(); | |
285 | } | |
286 | ||
0a4cb131 | 287 | //_____________________________________________________________________________ |
25ab8a31 | 288 | Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const |
289 | { | |
290 | return -TMath::Log(TMath::Tan(fOK.Phi()/2.)); | |
291 | } | |
1d46d1f6 | 292 | |
d297ef6e | 293 | //_____________________________________________________________________________ |
1ae500a2 | 294 | void AliEMCALShishKebabTrd1Module::GetPositionAtCenterCellLine(Int_t ieta, Double_t dist, TVector2 &v) |
295 | { | |
296 | // Jul 30, 2007 | |
297 | static Double_t theta=0., x=0., y=0.; | |
298 | if(ieta==0) { | |
299 | v = fOB2; | |
300 | theta = fThetaOB2; | |
301 | } else if(ieta==1) { | |
302 | v = fOB1; | |
303 | theta = fThetaOB1; | |
304 | } else { | |
305 | assert(0); | |
306 | } | |
307 | x = v.X() + TMath::Cos(theta) * dist; | |
308 | y = v.Y() + TMath::Sin(theta) * dist; | |
309 | v.Set(x,y); | |
310 | //printf(" GetPositionAtCenterCellLine() : dist %f : ieta %i : x %f | y %f \n", dist, ieta, x, y); | |
311 | } | |
312 | ||
313 | ||
1d46d1f6 | 314 | //_____________________________________________________________________________ |
315 | Double_t AliEMCALShishKebabTrd1Module::GetMaxEtaOfModule(int pri) const | |
316 | { | |
317 | // Right bottom point of module | |
d1ccaddd | 318 | Double_t thetaBottom = TMath::ATan2(fORB.Y(),fORB.X()); |
1d46d1f6 | 319 | Double_t etaBottom = ThetaToEta(thetaBottom); |
320 | // Right top point of module | |
d1ccaddd | 321 | Double_t thetaTop = TMath::ATan2(fORT.Y(),fORT.X()); |
1d46d1f6 | 322 | Double_t etaTop = ThetaToEta(thetaTop); |
323 | ||
324 | if(pri) { | |
d1ccaddd | 325 | printf(" Right bottom point of module : eta %5.4f : theta %6.4f (%6.2f) : x(zglob) %7.2f y(phi) %5.2f \n", |
326 | etaBottom, thetaBottom, thetaBottom * TMath::RadToDeg(), fORB.X(), fORB.Y()); | |
327 | printf(" Right top point of module : eta %5.4f : theta %6.4f (%6.2f) : x(zglob) %7.2f y(phi) %5.2f \n", | |
328 | etaTop, thetaTop, thetaTop * TMath::RadToDeg(), fORT.X(), fORT.Y()); | |
1d46d1f6 | 329 | } |
330 | return etaBottom>etaTop ? etaBottom : etaTop; | |
331 | } |