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18 //_________________________________________________________________________
19 // Main class for TRD1 geometry of Shish-Kebab case.
20 // Author: Alexei Pavlinov(WSU).
21 // Sep 20004 - Nov 2006; Apr 2010
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)
65 TString snam(g->GetName());
67 if (snam.Contains("v1",TString::kIgnoreCase)) key=1; //EMCAL_COMPLETEV1 vs EMCAL_COMPLETEv1 (or other)
70 DefineFirstModule(key);
73 AliDebug(10,Form("AliEMCALShishKebabTrd1Module - first module key=%i: theta %1.4f geometry %s\n",key,fTheta, g->GetName()));
76 //_____________________________________________________________________________
77 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor)
79 fGeometry(leftNeighbor.fGeometry),
99 // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName());
100 fTheta = leftNeighbor.GetTheta() - fgangle;
102 TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1);
104 Init(leftNeighbor.GetA(),leftNeighbor.GetB());
107 //________________________________________________________________
108 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod)
109 : TNamed(mod.GetName(),mod.GetTitle()),
110 fGeometry(mod.fGeometry),
114 fThetaA(mod.fThetaA),
121 fThetaOB1(mod.fThetaOB1),
122 fThetaOB2(mod.fThetaOB2),
128 for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i];
131 //________________________________________________________________
132 void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B)
134 // Define parameter module from parameters A,B from previos.
135 Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl;
136 Double_t xl = (yl - B) / A; // y=A*x+B
138 // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta));
139 // printf(" xp1 %9.3f \n ", xp1);
140 // xp1 == xp => both methods give the same results - 3-feb-05
141 Double_t alpha = TMath::Pi()/2. + fgangle/2;
142 Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha)));
143 Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt);
144 Double_t x = xl + xp;
146 // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp);
148 // have to define A and B;
149 Double_t yCprev = fgr + fga*TMath::Cos(fTheta);
150 Double_t xCprev = (yCprev - B) / A;
151 Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr;
153 fThetaA = fTheta - fgangle/2.;
154 fA = TMath::Tan(fThetaA); // !!
160 void AliEMCALShishKebabTrd1Module::DefineAllStaff()
162 //Define some parameters
164 // Centers of cells - 2X2 case
165 Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2
167 Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
168 Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
171 Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
172 Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
175 // Centers of cells - 3X3 case; Nov 9,2006
176 fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center
178 kk1 = ((fga+fga2)/4. + fga/6.)/2.;
180 xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
181 yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
182 fOK3X3[0].Set(xk1,yk1);
184 xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
185 yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
186 fOK3X3[2].Set(xk2,yk2);
188 // May 15, 2006; position of module(cells) center face
189 fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr);
190 fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta));
191 fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta));
192 // Jul 30, 2007 - for taking into account a position of shower maximum
193 fThetaOB1 = fTheta - fgangle/4.; // ??
194 fThetaOB2 = fTheta + fgangle/4.;
196 // Position of right/top point of module
197 // Gives the posibility to estimate SM size in z direction
198 Double_t xBottom = (fgr - fB) / fA;
199 Double_t yBottom = fgr;
200 fORB.Set(xBottom, yBottom);
202 Double_t l = fgb / TMath::Cos(fgangle/2.); // length of lateral module side
203 Double_t xTop = xBottom + l*TMath::Cos(TMath::ATan(fA));
204 Double_t yTop = fA*xTop + fB;
205 fORT.Set(xTop, yTop);
208 //_____________________________________________________________________________
209 void AliEMCALShishKebabTrd1Module::DefineFirstModule(const Int_t key)
212 // key=0 - zero tilt of first module;
213 // key=1 - angle=fgangle/2 = 0.75 degree.
214 // This is what we have in produced SM.
216 // Define first module
218 // theta in radians ; first object theta=pi/2.
219 fTheta = TMath::PiOver2();
220 fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o
222 // parameters of right line : y = A*z + B in system where zero point is IP.
223 fThetaA = fTheta - fgangle/2.;
224 fA = TMath::Tan(fThetaA);
225 Double_t xA = fga/2. + fga2/2.;
230 // theta in radians ; first object theta = 90-0.75 = 89.25 degree
231 fTheta = 89.25*TMath::DegToRad();
232 Double_t al1 = fgangle/2.;
233 Double_t x = 0.5*(fga*TMath::Cos(al1) + fgb*TMath::Sin(al1));
234 Double_t y = 0.5*(fgb + fga*TMath::Sin(al1))*TMath::Cos(al1);
236 // parameters of right line : y = A*z + B in system where zero point is IP.
237 fThetaA = fTheta - fgangle/2.;
238 fA = TMath::Tan(fThetaA);
239 Double_t xA = fga*TMath::Cos(al1);
244 printf("<E> key=%i : wrong case \n",key);
247 TObject::SetUniqueID(1); //
252 //_____________________________________________________________________________
253 void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta)
255 // Define name of object
256 SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg()));
259 //_____________________________________________________________________________
260 Bool_t AliEMCALShishKebabTrd1Module::GetParameters()
263 // Get needing module parameters from EMCAL geometry
266 Warning("GetParameters()"," No geometry ");
270 TString sn(fGeometry->GetName()); // 2-Feb-05
273 fga = (Double_t)fGeometry->GetEtaModuleSize();
274 fgb = (Double_t)fGeometry->GetLongModuleSize();
275 fgangle = Double_t(fGeometry->GetTrd1Angle())*TMath::DegToRad();
276 fgtanBetta = TMath::Tan(fgangle/2.);
277 fgr = (Double_t)fGeometry->GetIPDistance();
279 fgr += fGeometry->GetSteelFrontThickness();
281 fga2 = Double_t(fGeometry->Get2Trd1Dx2());
287 //_____________________________________________________________________________
288 void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const
293 printf("PrintShish() \n a %7.3f:%7.3f | b %7.2f | r %7.2f \n TRD1 angle %7.6f(%5.2f) | tanBetta %7.6f",
294 fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta);
295 printf(" fTheta %f : %5.2f : cos(theta) %f\n",
296 fTheta, GetThetaInDegree(),TMath::Cos(fTheta));
297 printf(" OK : %i |%s| theta %f : phi = %f(%5.2f) \n",
298 GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg());
300 printf(" y %9.3f x %9.3f xrb %9.3f (right bottom on r=%9.3f ) \n",
301 fOK.X(), fOK.Y(), fORB.X(),fORB.Y());
303 printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg());
304 printf(" fOK : X %9.4f: Y %9.4f : eta %5.3f\n", fOK.X(), fOK.Y(), GetEtaOfCenterOfModule());
305 printf(" fOK1 : X %9.4f: Y %9.4f : (local, ieta=2)\n", fOK1.X(), fOK1.Y());
306 printf(" fOK2 : X %9.4f: Y %9.4f : (local, ieta=1)\n\n", fOK2.X(), fOK2.Y());
307 printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y());
308 printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y());
309 printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y());
312 for(int ieta=0; ieta<3; ieta++) {
313 printf(" fOK3X3[%i] : X %9.4f: Y %9.4f (local) \n", ieta, fOK3X3[ieta].X(), fOK3X3[ieta].Y());
316 GetMaxEtaOfModule(pri);
321 //_____________________________________________________________________________
322 Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const
324 return fTheta*TMath::RadToDeg();
327 //_____________________________________________________________________________
328 Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const
330 return -TMath::Log(TMath::Tan(fOK.Phi()/2.));
333 //_____________________________________________________________________________
334 void AliEMCALShishKebabTrd1Module::GetPositionAtCenterCellLine(Int_t ieta, Double_t dist, TVector2 &v)
337 static Double_t theta=0., x=0., y=0.;
348 x = v.X() + TMath::Cos(theta) * dist;
349 y = v.Y() + TMath::Sin(theta) * dist;
350 // printf(" GetPositionAtCenterCellLine() %s : dist %f : ieta %i : x %f %f v.X() | y %f %f v.Y() : cos %f sin %f \n",
351 //GetName(), dist, ieta, v.X(),x, y,v.Y(),TMath::Cos(theta),TMath::Sin(theta));
356 //_____________________________________________________________________________
357 Double_t AliEMCALShishKebabTrd1Module::GetMaxEtaOfModule(int pri) const
359 // Right bottom point of module
360 Double_t thetaBottom = TMath::ATan2(fORB.Y(),fORB.X());
361 Double_t etaBottom = ThetaToEta(thetaBottom);
362 // Right top point of module
363 Double_t thetaTop = TMath::ATan2(fORT.Y(),fORT.X());
364 Double_t etaTop = ThetaToEta(thetaTop);
367 printf(" Right bottom point of module : eta %5.4f : theta %6.4f (%6.2f) : x(zglob) %7.2f y(phi) %5.2f \n",
368 etaBottom, thetaBottom, thetaBottom * TMath::RadToDeg(), fORB.X(), fORB.Y());
369 printf(" Right top point of module : eta %5.4f : theta %6.4f (%6.2f) : x(zglob) %7.2f y(phi) %5.2f \n",
370 etaTop, thetaTop, thetaTop * TMath::RadToDeg(), fORT.X(), fORT.Y());
372 return etaBottom>etaTop ? etaBottom : etaTop;