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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)
63 TString snam(g->GetName());
65 if(snam.Contains("FIRSTYEARv1",TString::kIgnoreCase)) key=1;
66 if(snam.Contains("COMPLETEv1",TString::kIgnoreCase)) key=1;
68 DefineFirstModule(key);
71 AliDebug(10,Form("AliEMCALShishKebabTrd1Module - first module key=%i: theta %1.4f geometry %s\n",key,fTheta, g->GetName()));
74 //_____________________________________________________________________________
75 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor)
77 fGeometry(leftNeighbor.fGeometry),
94 // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName());
95 fTheta = leftNeighbor.GetTheta() - fgangle;
97 TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1);
99 Init(leftNeighbor.GetA(),leftNeighbor.GetB());
102 //________________________________________________________________
103 AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod)
104 : TNamed(mod.GetName(),mod.GetTitle()),
105 fGeometry(mod.fGeometry),
109 fThetaA(mod.fThetaA),
116 fThetaOB1(mod.fThetaOB1),
117 fThetaOB2(mod.fThetaOB2),
122 for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i];
125 //________________________________________________________________
126 void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B)
128 // Define parameter module from parameters A,B from previos.
129 Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl;
130 Double_t xl = (yl - B) / A; // y=A*x+B
132 // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta));
133 // printf(" xp1 %9.3f \n ", xp1);
134 // xp1 == xp => both methods give the same results - 3-feb-05
135 Double_t alpha = TMath::Pi()/2. + fgangle/2;
136 Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha)));
137 Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt);
138 Double_t x = xl + xp;
140 // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp);
142 // have to define A and B;
143 Double_t yCprev = fgr + fga*TMath::Cos(fTheta);
144 Double_t xCprev = (yCprev - B) / A;
145 Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr;
147 fThetaA = fTheta - fgangle/2.;
148 fA = TMath::Tan(fThetaA); // !!
154 void AliEMCALShishKebabTrd1Module::DefineAllStaff()
156 //Define some parameters
158 // Centers of cells - 2X2 case
159 Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2
161 Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
162 Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
165 Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
166 Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
169 // Centers of cells - 3X3 case; Nov 9,2006
170 fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center
172 kk1 = ((fga+fga2)/4. + fga/6.)/2.;
174 xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
175 yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
176 fOK3X3[0].Set(xk1,yk1);
178 xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
179 yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
180 fOK3X3[2].Set(xk2,yk2);
182 // May 15, 2006; position of module(cells) center face
183 fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr);
184 fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta));
185 fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta));
186 // Jul 30, 2007 - for taking into account a position of shower maximum
187 fThetaOB1 = fTheta - fgangle/4.; // ??
188 fThetaOB2 = fTheta + fgangle/4.;
190 // Position of right/top point of module
191 // Gives the posibility to estimate SM size in z direction
192 Double_t xBottom = (fgr - fB) / fA;
193 Double_t yBottom = fgr;
194 fORB.Set(xBottom, yBottom);
196 Double_t l = fgb / TMath::Cos(fgangle/2.); // length of lateral module side
197 Double_t xTop = xBottom + l*TMath::Cos(TMath::ATan(fA));
198 Double_t yTop = fA*xTop + fB;
199 fORT.Set(xTop, yTop);
202 //_____________________________________________________________________________
203 void AliEMCALShishKebabTrd1Module::DefineFirstModule(const Int_t key)
206 // key=0 - zero tilt of first module;
207 // key=1 - angle=fgangle/2 = 0.75 degree.
208 // This is what we have in produced SM.
210 // Define first module
212 // theta in radians ; first object theta=pi/2.
213 fTheta = TMath::PiOver2();
214 fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o
216 // parameters of right line : y = A*z + B in system where zero point is IP.
217 fThetaA = fTheta - fgangle/2.;
218 fA = TMath::Tan(fThetaA);
219 Double_t xA = fga/2. + fga2/2.;
224 // theta in radians ; first object theta = 90-0.75 = 89.25 degree
225 fTheta = 89.25*TMath::DegToRad();
226 Double_t al1 = fgangle/2.;
227 Double_t x = 0.5*(fga*TMath::Cos(al1) + fgb*TMath::Sin(al1));
228 Double_t y = 0.5*(fgb + fga*TMath::Sin(al1))*TMath::Cos(al1);
230 // parameters of right line : y = A*z + B in system where zero point is IP.
231 fThetaA = fTheta - fgangle/2.;
232 fA = TMath::Tan(fThetaA);
233 Double_t xA = fga*TMath::Cos(al1);
238 printf("<E> key=%i : wrong case \n",key);
241 TObject::SetUniqueID(1); //
246 //_____________________________________________________________________________
247 void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta)
249 // Define name of object
250 SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg()));
253 //_____________________________________________________________________________
254 Bool_t AliEMCALShishKebabTrd1Module::GetParameters()
257 // Get needing module parameters from EMCAL geometry
260 Warning("GetParameters()"," No geometry ");
264 TString sn(fGeometry->GetName()); // 2-Feb-05
267 fga = (Double_t)fGeometry->GetEtaModuleSize();
268 fgb = (Double_t)fGeometry->GetLongModuleSize();
269 fgangle = Double_t(fGeometry->GetTrd1Angle())*TMath::DegToRad();
270 fgtanBetta = TMath::Tan(fgangle/2.);
271 fgr = (Double_t)fGeometry->GetIPDistance();
273 fgr += fGeometry->GetSteelFrontThickness();
275 fga2 = Double_t(fGeometry->Get2Trd1Dx2());
281 //_____________________________________________________________________________
282 void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const
287 printf("PrintShish() \n a %7.3f:%7.3f | b %7.2f | r %7.2f \n TRD1 angle %7.6f(%5.2f) | tanBetta %7.6f",
288 fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta);
289 printf(" fTheta %f : %5.2f : cos(theta) %f\n",
290 fTheta, GetThetaInDegree(),TMath::Cos(fTheta));
291 printf(" OK : %i |%s| theta %f : phi = %f(%5.2f) \n",
292 GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg());
294 printf(" y %9.3f x %9.3f xrb %9.3f (right bottom on r=%9.3f ) \n",
295 fOK.X(), fOK.Y(), fORB.X(),fORB.Y());
297 printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg());
298 printf(" fOK : X %9.4f: Y %9.4f : eta %5.3f\n", fOK.X(), fOK.Y(), GetEtaOfCenterOfModule());
299 printf(" fOK1 : X %9.4f: Y %9.4f : (local, ieta=2)\n", fOK1.X(), fOK1.Y());
300 printf(" fOK2 : X %9.4f: Y %9.4f : (local, ieta=1)\n\n", fOK2.X(), fOK2.Y());
301 printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y());
302 printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y());
303 printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y());
306 for(int ieta=0; ieta<3; ieta++) {
307 printf(" fOK3X3[%i] : X %9.4f: Y %9.4f (local) \n", ieta, fOK3X3[ieta].X(), fOK3X3[ieta].Y());
310 GetMaxEtaOfModule(pri);
315 //_____________________________________________________________________________
316 Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const
318 return fTheta*TMath::RadToDeg();
321 //_____________________________________________________________________________
322 Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const
324 return -TMath::Log(TMath::Tan(fOK.Phi()/2.));
327 //_____________________________________________________________________________
328 void AliEMCALShishKebabTrd1Module::GetPositionAtCenterCellLine(Int_t ieta, Double_t dist, TVector2 &v)
331 static Double_t theta=0., x=0., y=0.;
342 x = v.X() + TMath::Cos(theta) * dist;
343 y = v.Y() + TMath::Sin(theta) * dist;
344 // printf(" GetPositionAtCenterCellLine() %s : dist %f : ieta %i : x %f %f v.X() | y %f %f v.Y() : cos %f sin %f \n",
345 //GetName(), dist, ieta, v.X(),x, y,v.Y(),TMath::Cos(theta),TMath::Sin(theta));
350 //_____________________________________________________________________________
351 Double_t AliEMCALShishKebabTrd1Module::GetMaxEtaOfModule(int pri) const
353 // Right bottom point of module
354 Double_t thetaBottom = TMath::ATan2(fORB.Y(),fORB.X());
355 Double_t etaBottom = ThetaToEta(thetaBottom);
356 // Right top point of module
357 Double_t thetaTop = TMath::ATan2(fORT.Y(),fORT.X());
358 Double_t etaTop = ThetaToEta(thetaTop);
361 printf(" Right bottom point of module : eta %5.4f : theta %6.4f (%6.2f) : x(zglob) %7.2f y(phi) %5.2f \n",
362 etaBottom, thetaBottom, thetaBottom * TMath::RadToDeg(), fORB.X(), fORB.Y());
363 printf(" Right top point of module : eta %5.4f : theta %6.4f (%6.2f) : x(zglob) %7.2f y(phi) %5.2f \n",
364 etaTop, thetaTop, thetaTop * TMath::RadToDeg(), fORT.X(), fORT.Y());
366 return etaBottom>etaTop ? etaBottom : etaTop;