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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 case of 3X3
25 //_________________________________________________________________________
28 #include "AliEMCALShishKebabTrd1Module.h"
29 #include "AliEMCALEMCGeometry.h"
33 ClassImp(AliEMCALShishKebabTrd1Module)
35 //AliEMCALEMCGeometry *AliEMCALShishKebabTrd1Module::fgGeometry=0;
36 Double_t AliEMCALShishKebabTrd1Module::fga=0.;
37 Double_t AliEMCALShishKebabTrd1Module::fga2=0.;
38 Double_t AliEMCALShishKebabTrd1Module::fgb=0.;
39 Double_t AliEMCALShishKebabTrd1Module::fgr=0.;
40 Double_t AliEMCALShishKebabTrd1Module::fgangle=0.; // around one degree
41 Double_t AliEMCALShishKebabTrd1Module::fgtanBetta=0; //
43 //_____________________________________________________________________________
44 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(Double_t theta, AliEMCALEMCGeometry *g)
63 // theta in radians ; first object shold be with theta=pi/2.
64 fTheta = TMath::PiOver2();
69 AliDebug(1,Form("AliEMCALShishKebabTrd1Module - first module: theta %1.4f geometry %s",fTheta,g->GetName()));
72 //_____________________________________________________________________________
73 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor)
75 fGeometry(leftNeighbor.fGeometry),
92 // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName());
93 fTheta = leftNeighbor.GetTheta() - fgangle;
95 TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1);
97 Init(leftNeighbor.GetA(),leftNeighbor.GetB());
100 //________________________________________________________________
101 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod)
102 : TNamed(mod.GetName(),mod.GetTitle()),
103 fGeometry(mod.fGeometry),
107 fThetaA(mod.fThetaA),
114 fThetaOB1(mod.fThetaOB1),
115 fThetaOB2(mod.fThetaOB2),
120 for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i];
123 //________________________________________________________________
124 void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B)
126 // Define parameter module from parameters A,B from previos.
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
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;
138 // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp);
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;
145 fThetaA = fTheta - fgangle/2.;
146 fA = TMath::Tan(fThetaA); // !!
152 void AliEMCALShishKebabTrd1Module::DefineAllStaff()
154 //Define some parameters
156 // Centers of cells - 2X2 case
157 Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2
159 Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
160 Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
163 Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
164 Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
167 // Centers of cells - 3X3 case; Nov 9,2006
168 fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center
170 kk1 = ((fga+fga2)/4. + fga/6.)/2.;
172 xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
173 yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
174 fOK3X3[0].Set(xk1,yk1);
176 xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
177 yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
178 fOK3X3[2].Set(xk2,yk2);
180 // May 15, 2006; position of module(cells) center face
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));
184 // Jul 30, 2007 - for taking into account a position of shower maximum
185 fThetaOB1 = fTheta - fgangle/4.; // ??
186 fThetaOB2 = fTheta + fgangle/4.;
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);
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);
200 //_____________________________________________________________________________
201 void AliEMCALShishKebabTrd1Module::DefineFirstModule()
203 // Define first module
204 fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o
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;
212 TObject::SetUniqueID(1); //
217 //_____________________________________________________________________________
218 void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta)
220 // Define name of object
221 SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg()));
224 //_____________________________________________________________________________
225 Bool_t AliEMCALShishKebabTrd1Module::GetParameters()
228 // Get needing module parameters from EMCAL geometry
229 TString sn(fGeometry->GetName()); // 2-Feb-05
232 Warning("GetParameters()"," No geometry ");
237 fga = (Double_t)fGeometry->GetEtaModuleSize();
238 fgb = (Double_t)fGeometry->GetLongModuleSize();
239 fgangle = Double_t(fGeometry->GetTrd1Angle())*TMath::DegToRad();
240 fgtanBetta = TMath::Tan(fgangle/2.);
241 fgr = (Double_t)fGeometry->GetIPDistance();
243 fgr += fGeometry->GetSteelFrontThickness();
245 fga2 = Double_t(fGeometry->Get2Trd1Dx2());
251 //_____________________________________________________________________________
252 void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const
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",
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));
261 printf(" %i |%s| theta %f : fOK.Phi = %f(%5.2f)\n",
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());
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());
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());
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());
276 GetMaxEtaOfModule(pri);
281 //_____________________________________________________________________________
282 Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const
284 return fTheta*TMath::RadToDeg();
287 //_____________________________________________________________________________
288 Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const
290 return -TMath::Log(TMath::Tan(fOK.Phi()/2.));
293 //_____________________________________________________________________________
294 void AliEMCALShishKebabTrd1Module::GetPositionAtCenterCellLine(Int_t ieta, Double_t dist, TVector2 &v)
297 static Double_t theta=0., x=0., y=0.;
307 x = v.X() + TMath::Cos(theta) * dist;
308 y = v.Y() + TMath::Sin(theta) * dist;
310 //printf(" GetPositionAtCenterCellLine() : dist %f : ieta %i : x %f | y %f \n", dist, ieta, x, y);
314 //_____________________________________________________________________________
315 Double_t AliEMCALShishKebabTrd1Module::GetMaxEtaOfModule(int pri) const
317 // Right bottom point of module
318 Double_t thetaBottom = TMath::ATan2(fORB.Y(),fORB.X());
319 Double_t etaBottom = ThetaToEta(thetaBottom);
320 // Right top point of module
321 Double_t thetaTop = TMath::ATan2(fORT.Y(),fORT.X());
322 Double_t etaTop = ThetaToEta(thetaTop);
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());
330 return etaBottom>etaTop ? etaBottom : etaTop;