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14 **************************************************************************/
18 //_________________________________________________________________________
19 // Main class for TRD1 geometry of Shish-Kebab case.
20 // Author: Aleksei Pavlinov(WSU).
21 // Sep 20004 - Nov 2006
22 // See web page with description of Shish-Kebab geometries:
23 // http://pdsfweb01.nersc.gov/~pavlinov/ALICE/SHISHKEBAB/RES/shishkebabALICE.html
24 // Nov 9,2006 - added cas of 3X3
25 //_________________________________________________________________________
28 // Class modified and implemented in JETAN
34 #include "AliJetDummyShishKebabTrd1Module.h"
35 #include "AliJetDummyGeo.h"
37 #include <Riostream.h>
39 ClassImp(AliJetDummyShishKebabTrd1Module)
41 AliJetDummyGeo *AliJetDummyShishKebabTrd1Module::fgGeometry=0;
42 Double_t AliJetDummyShishKebabTrd1Module::fga=0.;
43 Double_t AliJetDummyShishKebabTrd1Module::fga2=0.;
44 Double_t AliJetDummyShishKebabTrd1Module::fgb=0.;
45 Double_t AliJetDummyShishKebabTrd1Module::fgr=0.;
46 Double_t AliJetDummyShishKebabTrd1Module::fgangle=0.; // around one degree
47 Double_t AliJetDummyShishKebabTrd1Module::fgtanBetta=0; //
49 //_____________________________________________________________________________
50 AliJetDummyShishKebabTrd1Module::AliJetDummyShishKebabTrd1Module(Double_t theta, AliJetDummyGeo *g)
65 // theta in radians ; first object shold be with theta=pi/2.
67 fTheta = TMath::PiOver2();
72 } else Warning("AliJetDummyShishKebabTrd1Module(theta)","You should call this constractor just once !!");
74 AliInfo(Form("AliJetDummyShishKebabTrd1Module - first module: theta %1.4f geometry %s",fTheta,g->GetName()));
77 //_____________________________________________________________________________
78 AliJetDummyShishKebabTrd1Module::AliJetDummyShishKebabTrd1Module(AliJetDummyShishKebabTrd1Module &leftNeighbor)
93 // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName());
94 fTheta = leftNeighbor.GetTheta() - fgangle;
96 TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1);
98 Init(leftNeighbor.GetA(),leftNeighbor.GetB());
101 //________________________________________________________________
102 AliJetDummyShishKebabTrd1Module::AliJetDummyShishKebabTrd1Module(const AliJetDummyShishKebabTrd1Module& mod)
103 : TNamed(mod.GetName(),mod.GetTitle()),
107 fThetaA(mod.fThetaA),
116 for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i];
119 //________________________________________________________________
120 void AliJetDummyShishKebabTrd1Module::Init(Double_t A, Double_t B)
122 // Define parameter module from parameters A,B from previos.
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
127 Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta));
128 printf(" xp1 %9.3f \n ", xp1);
130 // xp1 == xp => both methods give the same results - 3-feb-05
131 Double_t alpha = TMath::Pi()/2. + fgangle/2;
132 Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha)));
133 Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt);
134 Double_t x = xl + xp;
136 if(fDebug>1) printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp);
138 // have to define A and B;
139 Double_t yCprev = fgr + fga*TMath::Cos(fTheta);
140 Double_t xCprev = (yCprev - B) / A;
141 Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr;
143 fThetaA = fTheta - fgangle/2.;
144 fA = TMath::Tan(fThetaA); // !!
150 //_____________________________________________________________________________
151 void AliJetDummyShishKebabTrd1Module::DefineAllStaff()
154 // Centers of module - 2X2 case
155 Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2
157 Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
158 Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
161 Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
162 Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
165 // Centers of module - 3X3 case; Nov 9,2006
166 fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center
168 kk1 = ((fga+fga2)/4. + fga/6.)/2.;
170 xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
171 yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
172 fOK3X3[0].Set(xk1,yk1);
174 xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
175 yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
176 fOK3X3[2].Set(xk2,yk2);
178 // May 15, 2006; position of cell face of cells
179 fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr);
180 fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta));
181 fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta));
185 //_____________________________________________________________________________
186 void AliJetDummyShishKebabTrd1Module::DefineFirstModule()
188 // Define first module
189 fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o
191 // parameters of right line : y = A*z + B in system where zero point is IP.
192 fThetaA = fTheta - fgangle/2.;
193 fA = TMath::Tan(fThetaA);
194 Double_t xA = fga/2. + fga2/2., yA = fgr;
197 TObject::SetUniqueID(1); //
202 //_____________________________________________________________________________
203 void AliJetDummyShishKebabTrd1Module::DefineName(Double_t theta)
205 // Define name of object
206 SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg()));
209 //_____________________________________________________________________________
210 Bool_t AliJetDummyShishKebabTrd1Module::GetParameters()
212 // Get needing module parameters from EMCAL geometry
213 if(!fgGeometry) fgGeometry = AliJetDummyGeo::GetInstance();
214 TString sn(fgGeometry->GetName()); // 2-Feb-05
217 Warning("GetParameters()"," No geometry ");
221 fga = (Double_t)fgGeometry->GetEtaModuleSize();
222 fgb = (Double_t)fgGeometry->GetLongModuleSize();
223 fgangle = Double_t(fgGeometry->GetTrd1Angle())*TMath::DegToRad();
224 fgtanBetta = TMath::Tan(fgangle/2.);
225 fgr = (Double_t)fgGeometry->GetIPDistance();
227 if(!sn.Contains("TRD2")) fgr += fgGeometry->GetSteelFrontThickness();
229 fga2 = Double_t(fgGeometry->Get2Trd1Dx2());
235 //_____________________________________________________________________________
236 void AliJetDummyShishKebabTrd1Module::PrintShish(Int_t pri) const
240 printf("PrintShish() \n a %7.3f:%7.3f | b %7.2f | r %7.2f \n TRD1 angle %7.6f(%5.2f) | tanBetta %7.6f",
241 fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta);
242 printf(" fTheta %f : %5.2f : cos(theta) %f\n",
243 fTheta, GetThetaInDegree(),TMath::Cos(fTheta));
245 printf(" %i |%s| theta %f : fOK.Phi = %f(%5.2f)\n",
246 GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg());
247 printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg());
248 printf(" fOK : X %9.4f: Y %9.4f : eta %5.3f\n", fOK.X(), fOK.Y(), GetEtaOfCenterOfModule());
249 printf(" fOK1 : X %9.4f: Y %9.4f : (local, ieta=2)\n", fOK1.X(), fOK1.Y());
250 printf(" fOK2 : X %9.4f: Y %9.4f : (local, ieta=1)\n\n", fOK2.X(), fOK2.Y());
251 printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y());
252 printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y());
253 printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y());
256 for(Int_t ieta=0; ieta<3; ieta++) {
257 printf(" fOK3X3[%i] : X %9.4f: Y %9.4f (local) \n", ieta, fOK3X3[ieta].X(), fOK3X3[ieta].Y());
260 GetMaxEtaOfModule(pri);
265 //_____________________________________________________________________________
266 Double_t AliJetDummyShishKebabTrd1Module::GetThetaInDegree() const
268 return fTheta*TMath::RadToDeg();
271 //_____________________________________________________________________________
272 Double_t AliJetDummyShishKebabTrd1Module::GetEtaOfCenterOfModule() const
274 return -TMath::Log(TMath::Tan(fOK.Phi()/2.));
277 //_____________________________________________________________________________
278 Double_t AliJetDummyShishKebabTrd1Module::GetMaxEtaOfModule(Int_t pri) const
280 // Right bottom point of module
281 Double_t xBottom = (fgr - fB) / fA;
282 Double_t thetaBottom = TMath::ATan2(fgr, xBottom);
283 Double_t etaBottom = ThetaToEta(thetaBottom);
284 // Right top point of module
285 Double_t l = fgb / TMath::Cos(fgangle/2.); // length of lateral module side
286 Double_t xTop = xBottom + l*TMath::Cos(TMath::ATan(fA));
287 Double_t yTop = fA*xTop + fB;
288 Double_t thetaTop = TMath::ATan2(yTop, xTop);
289 Double_t etaTop = ThetaToEta(thetaTop);
292 printf(" Right bottom point of module : eta %5.4f : theta %6.4f (%6.2f) \n",
293 etaBottom, thetaBottom, thetaBottom * TMath::RadToDeg());
294 printf(" Right top point of module : eta %5.4f : theta %6.4f (%6.2f) \n",
295 etaTop, thetaTop, thetaTop * TMath::RadToDeg());
297 return etaBottom>etaTop ? etaBottom : etaTop;