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