Changes needed to synchronize the macro with the ITS code: geometry explicitely initi...
[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"
25ab8a31 29//#include <assert.h>
1963b290 30#include "AliEMCALGeometry.h"
31
25ab8a31 32#include <Riostream.h>
e52475ed 33
1963b290 34ClassImp(AliEMCALShishKebabTrd1Module)
35
36 AliEMCALGeometry *AliEMCALShishKebabTrd1Module::fgGeometry=0;
37 Double_t AliEMCALShishKebabTrd1Module::fga=0.;
38 Double_t AliEMCALShishKebabTrd1Module::fga2=0.;
39 Double_t AliEMCALShishKebabTrd1Module::fgb=0.;
40 Double_t AliEMCALShishKebabTrd1Module::fgr=0.;
e52475ed 41 Double_t AliEMCALShishKebabTrd1Module::fgangle=0.; // around one degree
1963b290 42 Double_t AliEMCALShishKebabTrd1Module::fgtanBetta=0; //
43
0a4cb131 44//_____________________________________________________________________________
18a21c7c 45AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(Double_t theta, AliEMCALGeometry *g)
46 : TNamed(),
47 fOK(),
48 fA(0.),
49 fB(0.),
50 fThetaA(0.),
51 fTheta(theta),
52 fOK1(),
53 fOK2(),
54 fOB(),
55 fOB1(),
1d46d1f6 56 fOB2(),
1ae500a2 57 fThetaOB1(0.),
58 fThetaOB2(0.),
1d46d1f6 59 fOK3X3()
25ab8a31 60{
61 // theta in radians ; first object shold be with theta=pi/2.
1963b290 62 if(fgGeometry==0) {
25ab8a31 63 fTheta = TMath::PiOver2();
e52475ed 64 fgGeometry = g;
1963b290 65 if(GetParameters()) {
66 DefineFirstModule();
67 }
68 } else Warning("AliEMCALShishKebabTrd1Module(theta)","You should call this constractor just once !!");
69 DefineName(fTheta);
b42d4197 70 AliInfo(Form("AliEMCALShishKebabTrd1Module - first module: theta %1.4f geometry %s",fTheta,g->GetName()));
1963b290 71}
72
0a4cb131 73//_____________________________________________________________________________
18a21c7c 74AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor)
75 : TNamed(),
76 fOK(),
77 fA(0.),
78 fB(0.),
79 fThetaA(0.),
80 fTheta(0.),
81 fOK1(),
82 fOK2(),
83 fOB(),
84 fOB1(),
1d46d1f6 85 fOB2(),
1ae500a2 86 fThetaOB1(0.),
87 fThetaOB2(0.),
1d46d1f6 88 fOK3X3()
25ab8a31 89{
1963b290 90 // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName());
1963b290 91 fTheta = leftNeighbor.GetTheta() - fgangle;
1d46d1f6 92
93 TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1);
94
1963b290 95 Init(leftNeighbor.GetA(),leftNeighbor.GetB());
96}
97
0a4cb131 98//________________________________________________________________
18a21c7c 99AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod)
100 : TNamed(mod.GetName(),mod.GetTitle()),
101 fOK(mod.fOK),
102 fA(mod.fA),
103 fB(mod.fB),
104 fThetaA(mod.fThetaA),
105 fTheta(mod.fTheta),
106 fOK1(mod.fOK1),
107 fOK2(mod.fOK2),
108 fOB(mod.fOB),
109 fOB1(mod.fOB1),
3f66111e 110 fOB2(mod.fOB2)
0a4cb131 111{
112 //copy ctor
3f66111e 113 for (Int_t i=0; i<3; i++) fOK3X3[i] = mod.fOK3X3[i];
0a4cb131 114}
115
116//________________________________________________________________
25ab8a31 117void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B)
118{
119 // Define parameter module from parameters A,B from previos.
1963b290 120 Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl;
121 Double_t xl = (yl - B) / A; // y=A*x+B
122
123 // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta));
124 // printf(" xp1 %9.3f \n ", xp1);
125 // xp1 == xp => both methods give the same results - 3-feb-05
126 Double_t alpha = TMath::Pi()/2. + fgangle/2;
127 Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha)));
128 Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt);
129 Double_t x = xl + xp;
130 fOK.Set(x, y);
131 // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp);
132
133 // have to define A and B;
134 Double_t yCprev = fgr + fga*TMath::Cos(fTheta);
135 Double_t xCprev = (yCprev - B) / A;
136 Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr;
137
138 fThetaA = fTheta - fgangle/2.;
139 fA = TMath::Tan(fThetaA); // !!
140 fB = yA - fA*xA;
141
1d46d1f6 142 DefineAllStaff();
143}
144
145void AliEMCALShishKebabTrd1Module::DefineAllStaff()
146{
1963b290 147 DefineName(fTheta);
1ae500a2 148 // Centers of cells - 2X2 case
1963b290 149 Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2
150
151 Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
e52475ed 152 Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
1963b290 153 fOK1.Set(xk1,yk1);
154
155 Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
e52475ed 156 Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
1963b290 157 fOK2.Set(xk2,yk2);
b44d5aa4 158
1ae500a2 159 // Centers of cells - 3X3 case; Nov 9,2006
1d46d1f6 160 fOK3X3[1].Set(fOK.X(), fOK.Y()-fgr); // coincide with module center
161
162 kk1 = ((fga+fga2)/4. + fga/6.)/2.;
163
164 xk1 = fOK.X() - kk1*TMath::Sin(fTheta);
165 yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr;
166 fOK3X3[0].Set(xk1,yk1);
167
168 xk2 = fOK.X() + kk1*TMath::Sin(fTheta);
169 yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr;
170 fOK3X3[2].Set(xk2,yk2);
171
1ae500a2 172 // May 15, 2006; position of module(cells) center face
b44d5aa4 173 fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr);
174 fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta));
175 fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta));
1ae500a2 176 // Jul 30, 2007 - for taking into account a position of shower maximum
177 fThetaOB1 = fTheta - fgangle/4.; // ??
178 fThetaOB2 = fTheta + fgangle/4.;
1963b290 179}
180
0a4cb131 181//_____________________________________________________________________________
1963b290 182void AliEMCALShishKebabTrd1Module::DefineFirstModule()
183{
25ab8a31 184 // Define first module
1963b290 185 fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o
186
187 // parameters of right line : y = A*z + B in system where zero point is IP.
188 fThetaA = fTheta - fgangle/2.;
189 fA = TMath::Tan(fThetaA);
190 Double_t xA = fga/2. + fga2/2., yA = fgr;
191 fB = yA - fA*xA;
192
1963b290 193 TObject::SetUniqueID(1); //
1d46d1f6 194
195 DefineAllStaff();
1963b290 196}
197
0a4cb131 198//_____________________________________________________________________________
25ab8a31 199void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta)
1963b290 200{
25ab8a31 201 // Define name of object
202 SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg()));
1963b290 203}
204
0a4cb131 205//_____________________________________________________________________________
1963b290 206Bool_t AliEMCALShishKebabTrd1Module::GetParameters()
207{
25ab8a31 208 // Get needing module parameters from EMCAL geometry
e52475ed 209 if(!fgGeometry) fgGeometry = AliEMCALGeometry::GetInstance();
1963b290 210 TString sn(fgGeometry->GetName()); // 2-Feb-05
211 sn.ToUpper();
212 if(!fgGeometry) {
213 Warning("GetParameters()"," No geometry ");
214 return kFALSE;
215 }
216
217 fga = (Double_t)fgGeometry->GetEtaModuleSize();
218 fgb = (Double_t)fgGeometry->GetLongModuleSize();
219 fgangle = Double_t(fgGeometry->GetTrd1Angle())*TMath::DegToRad();
220 fgtanBetta = TMath::Tan(fgangle/2.);
221 fgr = (Double_t)fgGeometry->GetIPDistance();
1d46d1f6 222
1963b290 223 if(!sn.Contains("TRD2")) fgr += fgGeometry->GetSteelFrontThickness();
1d46d1f6 224
1963b290 225 fga2 = Double_t(fgGeometry->Get2Trd1Dx2());
c4a57092 226 //PH PrintShish(0);
1963b290 227 return kTRUE;
228}
229
230// service methods
0a4cb131 231//_____________________________________________________________________________
c63c3c5d 232void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const
1963b290 233{
25ab8a31 234 // service method
1963b290 235 if(pri>=0) {
b44d5aa4 236 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 237 fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta);
238 printf(" fTheta %f : %5.2f : cos(theta) %f\n",
239 fTheta, GetThetaInDegree(),TMath::Cos(fTheta));
e52475ed 240 if(pri>=1) {
b44d5aa4 241 printf(" %i |%s| theta %f : fOK.Phi = %f(%5.2f)\n",
1963b290 242 GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg());
243 printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg());
1d46d1f6 244 printf(" fOK : X %9.4f: Y %9.4f : eta %5.3f\n", fOK.X(), fOK.Y(), GetEtaOfCenterOfModule());
245 printf(" fOK1 : X %9.4f: Y %9.4f : (local, ieta=2)\n", fOK1.X(), fOK1.Y());
246 printf(" fOK2 : X %9.4f: Y %9.4f : (local, ieta=1)\n\n", fOK2.X(), fOK2.Y());
b44d5aa4 247 printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y());
248 printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y());
249 printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y());
1d46d1f6 250 // 3X3
251 printf(" 3X3 \n");
252 for(int ieta=0; ieta<3; ieta++) {
253 printf(" fOK3X3[%i] : X %9.4f: Y %9.4f (local) \n", ieta, fOK3X3[ieta].X(), fOK3X3[ieta].Y());
254 }
b44d5aa4 255 // fOK.Dump();
1d46d1f6 256 GetMaxEtaOfModule(pri);
1963b290 257 }
258 }
259}
25ab8a31 260
0a4cb131 261//_____________________________________________________________________________
25ab8a31 262Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const
263{
264 return fTheta*TMath::RadToDeg();
265}
266
0a4cb131 267//_____________________________________________________________________________
25ab8a31 268Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const
269{
270 return -TMath::Log(TMath::Tan(fOK.Phi()/2.));
271}
1d46d1f6 272
1ae500a2 273void AliEMCALShishKebabTrd1Module::GetPositionAtCenterCellLine(Int_t ieta, Double_t dist, TVector2 &v)
274{
275 // Jul 30, 2007
276 static Double_t theta=0., x=0., y=0.;
277 if(ieta==0) {
278 v = fOB2;
279 theta = fThetaOB2;
280 } else if(ieta==1) {
281 v = fOB1;
282 theta = fThetaOB1;
283 } else {
284 assert(0);
285 }
286 x = v.X() + TMath::Cos(theta) * dist;
287 y = v.Y() + TMath::Sin(theta) * dist;
288 v.Set(x,y);
289 //printf(" GetPositionAtCenterCellLine() : dist %f : ieta %i : x %f | y %f \n", dist, ieta, x, y);
290}
291
292
1d46d1f6 293//_____________________________________________________________________________
294Double_t AliEMCALShishKebabTrd1Module::GetMaxEtaOfModule(int pri) const
295{
296 // Right bottom point of module
297 Double_t xBottom = (fgr - fB) / fA;
298 Double_t thetaBottom = TMath::ATan2(fgr, xBottom);
299 Double_t etaBottom = ThetaToEta(thetaBottom);
300 // Right top point of module
301 Double_t l = fgb / TMath::Cos(fgangle/2.); // length of lateral module side
302 Double_t xTop = xBottom + l*TMath::Cos(TMath::ATan(fA));
303 Double_t yTop = fA*xTop + fB;
304 Double_t thetaTop = TMath::ATan2(yTop, xTop);
305 Double_t etaTop = ThetaToEta(thetaTop);
306
307 if(pri) {
308 printf(" Right bottom point of module : eta %5.4f : theta %6.4f (%6.2f) \n",
309 etaBottom, thetaBottom, thetaBottom * TMath::RadToDeg());
310 printf(" Right top point of module : eta %5.4f : theta %6.4f (%6.2f) \n",
311 etaTop, thetaTop, thetaTop * TMath::RadToDeg());
312 }
313 return etaBottom>etaTop ? etaBottom : etaTop;
314}