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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). | |
21 | // Sep 20004. | |
22 | // See web page with description of Shish-Kebab geometries: | |
23 | // http://pdsfweb01.nersc.gov/~pavlinov/ALICE/SHISHKEBAB/RES/shishkebabALICE.html | |
24 | //_________________________________________________________________________ | |
1963b290 | 25 | |
b42d4197 | 26 | #include "AliLog.h" |
1963b290 | 27 | #include "AliEMCALShishKebabTrd1Module.h" |
25ab8a31 | 28 | //#include <assert.h> |
1963b290 | 29 | #include "AliEMCALGeometry.h" |
30 | ||
25ab8a31 | 31 | #include <Riostream.h> |
e52475ed | 32 | #include <TMath.h> |
33 | ||
1963b290 | 34 | ClassImp(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 | 45 | AliEMCALShishKebabTrd1Module::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(), | |
56 | fOB2() | |
25ab8a31 | 57 | { |
58 | // theta in radians ; first object shold be with theta=pi/2. | |
1963b290 | 59 | if(fgGeometry==0) { |
25ab8a31 | 60 | fTheta = TMath::PiOver2(); |
e52475ed | 61 | fgGeometry = g; |
1963b290 | 62 | if(GetParameters()) { |
63 | DefineFirstModule(); | |
64 | } | |
65 | } else Warning("AliEMCALShishKebabTrd1Module(theta)","You should call this constractor just once !!"); | |
66 | DefineName(fTheta); | |
b42d4197 | 67 | AliInfo(Form("AliEMCALShishKebabTrd1Module - first module: theta %1.4f geometry %s",fTheta,g->GetName())); |
1963b290 | 68 | } |
69 | ||
0a4cb131 | 70 | //_____________________________________________________________________________ |
18a21c7c | 71 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(AliEMCALShishKebabTrd1Module &leftNeighbor) |
72 | : TNamed(), | |
73 | fOK(), | |
74 | fA(0.), | |
75 | fB(0.), | |
76 | fThetaA(0.), | |
77 | fTheta(0.), | |
78 | fOK1(), | |
79 | fOK2(), | |
80 | fOB(), | |
81 | fOB1(), | |
82 | fOB2() | |
25ab8a31 | 83 | { |
1963b290 | 84 | // printf("** Left Neighbor : %s **\n", leftNeighbor.GetName()); |
85 | TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1); | |
86 | fTheta = leftNeighbor.GetTheta() - fgangle; | |
87 | Init(leftNeighbor.GetA(),leftNeighbor.GetB()); | |
88 | } | |
89 | ||
0a4cb131 | 90 | //________________________________________________________________ |
18a21c7c | 91 | AliEMCALShishKebabTrd1Module::AliEMCALShishKebabTrd1Module(const AliEMCALShishKebabTrd1Module& mod) |
92 | : TNamed(mod.GetName(),mod.GetTitle()), | |
93 | fOK(mod.fOK), | |
94 | fA(mod.fA), | |
95 | fB(mod.fB), | |
96 | fThetaA(mod.fThetaA), | |
97 | fTheta(mod.fTheta), | |
98 | fOK1(mod.fOK1), | |
99 | fOK2(mod.fOK2), | |
100 | fOB(mod.fOB), | |
101 | fOB1(mod.fOB1), | |
102 | fOB2(mod.fOB2) | |
0a4cb131 | 103 | { |
104 | //copy ctor | |
0a4cb131 | 105 | } |
106 | ||
107 | //________________________________________________________________ | |
25ab8a31 | 108 | void AliEMCALShishKebabTrd1Module::Init(Double_t A, Double_t B) |
109 | { | |
110 | // Define parameter module from parameters A,B from previos. | |
1963b290 | 111 | Double_t yl = (fgb/2)*TMath::Sin(fTheta) + (fga/2)*TMath::Cos(fTheta) + fgr, y = yl; |
112 | Double_t xl = (yl - B) / A; // y=A*x+B | |
113 | ||
114 | // Double_t xp1 = (fga/2. + fgb/2.*fgtanBetta)/(TMath::Sin(fTheta) + fgtanBetta*TMath::Cos(fTheta)); | |
115 | // printf(" xp1 %9.3f \n ", xp1); | |
116 | // xp1 == xp => both methods give the same results - 3-feb-05 | |
117 | Double_t alpha = TMath::Pi()/2. + fgangle/2; | |
118 | Double_t xt = (fga+fga2)*TMath::Tan(fTheta)*TMath::Tan(alpha)/(4.*(1.-TMath::Tan(fTheta)*TMath::Tan(alpha))); | |
119 | Double_t yt = xt / TMath::Tan(fTheta), xp = TMath::Sqrt(xt*xt + yt*yt); | |
120 | Double_t x = xl + xp; | |
121 | fOK.Set(x, y); | |
122 | // printf(" yl %9.3f | xl %9.3f | xp %9.3f \n", yl, xl, xp); | |
123 | ||
124 | // have to define A and B; | |
125 | Double_t yCprev = fgr + fga*TMath::Cos(fTheta); | |
126 | Double_t xCprev = (yCprev - B) / A; | |
127 | Double_t xA = xCprev + fga*TMath::Sin(fTheta), yA = fgr; | |
128 | ||
129 | fThetaA = fTheta - fgangle/2.; | |
130 | fA = TMath::Tan(fThetaA); // !! | |
131 | fB = yA - fA*xA; | |
132 | ||
133 | DefineName(fTheta); | |
e52475ed | 134 | // Centers of module |
1963b290 | 135 | Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2 |
136 | ||
137 | Double_t xk1 = fOK.X() - kk1*TMath::Sin(fTheta); | |
e52475ed | 138 | Double_t yk1 = fOK.Y() + kk1*TMath::Cos(fTheta) - fgr; |
1963b290 | 139 | fOK1.Set(xk1,yk1); |
140 | ||
141 | Double_t xk2 = fOK.X() + kk1*TMath::Sin(fTheta); | |
e52475ed | 142 | Double_t yk2 = fOK.Y() - kk1*TMath::Cos(fTheta) - fgr; |
1963b290 | 143 | fOK2.Set(xk2,yk2); |
b44d5aa4 | 144 | |
145 | // May 15, 2006; position of cell face of cells | |
146 | fOB.Set(fOK.X()-fgb/2.*TMath::Cos(fTheta), fOK.Y()-fgb/2.*TMath::Sin(fTheta)-fgr); | |
147 | fOB1.Set(fOB.X()-fga/4.*TMath::Sin(fTheta), fOB.Y()+fga/4.*TMath::Cos(fTheta)); | |
148 | fOB2.Set(fOB.X()+fga/4.*TMath::Sin(fTheta), fOB.Y()-fga/4.*TMath::Cos(fTheta)); | |
1963b290 | 149 | } |
150 | ||
0a4cb131 | 151 | //_____________________________________________________________________________ |
1963b290 | 152 | void AliEMCALShishKebabTrd1Module::DefineFirstModule() |
153 | { | |
25ab8a31 | 154 | // Define first module |
1963b290 | 155 | fOK.Set(fga2/2., fgr + fgb/2.); // position the center of module vs o |
156 | ||
157 | // parameters of right line : y = A*z + B in system where zero point is IP. | |
158 | fThetaA = fTheta - fgangle/2.; | |
159 | fA = TMath::Tan(fThetaA); | |
160 | Double_t xA = fga/2. + fga2/2., yA = fgr; | |
161 | fB = yA - fA*xA; | |
162 | ||
163 | Double_t kk1 = (fga+fga2)/(2.*4.); // kk1=kk2 | |
e52475ed | 164 | fOK1.Set(fOK.X() - kk1, fOK.Y()-fgr); |
165 | fOK2.Set(fOK.X() + kk1, fOK.Y()-fgr); | |
1963b290 | 166 | |
b44d5aa4 | 167 | fOB.Set(fOK.X(),fOK.Y()-fgb/2.-fgr); |
168 | fOB1.Set(fOB.X()-fga/4., fOB.Y()); | |
169 | fOB2.Set(fOB.X()+fga/4., fOB.Y()); | |
170 | ||
1963b290 | 171 | TObject::SetUniqueID(1); // |
172 | } | |
173 | ||
0a4cb131 | 174 | //_____________________________________________________________________________ |
25ab8a31 | 175 | void AliEMCALShishKebabTrd1Module::DefineName(Double_t theta) |
1963b290 | 176 | { |
25ab8a31 | 177 | // Define name of object |
178 | SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg())); | |
1963b290 | 179 | } |
180 | ||
0a4cb131 | 181 | //_____________________________________________________________________________ |
1963b290 | 182 | Bool_t AliEMCALShishKebabTrd1Module::GetParameters() |
183 | { | |
25ab8a31 | 184 | // Get needing module parameters from EMCAL geometry |
e52475ed | 185 | if(!fgGeometry) fgGeometry = AliEMCALGeometry::GetInstance(); |
1963b290 | 186 | TString sn(fgGeometry->GetName()); // 2-Feb-05 |
187 | sn.ToUpper(); | |
188 | if(!fgGeometry) { | |
189 | Warning("GetParameters()"," No geometry "); | |
190 | return kFALSE; | |
191 | } | |
192 | ||
193 | fga = (Double_t)fgGeometry->GetEtaModuleSize(); | |
194 | fgb = (Double_t)fgGeometry->GetLongModuleSize(); | |
195 | fgangle = Double_t(fgGeometry->GetTrd1Angle())*TMath::DegToRad(); | |
196 | fgtanBetta = TMath::Tan(fgangle/2.); | |
197 | fgr = (Double_t)fgGeometry->GetIPDistance(); | |
198 | if(!sn.Contains("TRD2")) fgr += fgGeometry->GetSteelFrontThickness(); | |
199 | fga2 = Double_t(fgGeometry->Get2Trd1Dx2()); | |
c4a57092 | 200 | //PH PrintShish(0); |
1963b290 | 201 | return kTRUE; |
202 | } | |
203 | ||
204 | // service methods | |
0a4cb131 | 205 | //_____________________________________________________________________________ |
c63c3c5d | 206 | void AliEMCALShishKebabTrd1Module::PrintShish(int pri) const |
1963b290 | 207 | { |
25ab8a31 | 208 | // service method |
1963b290 | 209 | if(pri>=0) { |
b44d5aa4 | 210 | 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 | 211 | fga, fga2, fgb, fgr, fgangle, fgangle*TMath::RadToDeg(), fgtanBetta); |
212 | printf(" fTheta %f : %5.2f : cos(theta) %f\n", | |
213 | fTheta, GetThetaInDegree(),TMath::Cos(fTheta)); | |
e52475ed | 214 | if(pri>=1) { |
b44d5aa4 | 215 | printf(" %i |%s| theta %f : fOK.Phi = %f(%5.2f)\n", |
1963b290 | 216 | GetUniqueID(), GetName(), fTheta, fOK.Phi(),fOK.Phi()*TMath::RadToDeg()); |
217 | printf(" A %f B %f | fThetaA %7.6f(%5.2f)\n", fA,fB, fThetaA,fThetaA*TMath::RadToDeg()); | |
b44d5aa4 | 218 | printf(" fOK : X %9.4f: Y %9.4f \n", fOK.X(), fOK.Y()); |
219 | printf(" fOK1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOK1.X(), fOK1.Y()); | |
220 | printf(" fOK2 : X %9.4f: Y %9.4f (local, ieta=1)\n\n", fOK2.X(), fOK2.Y()); | |
221 | printf(" fOB : X %9.4f: Y %9.4f \n", fOB.X(), fOB.Y()); | |
222 | printf(" fOB1 : X %9.4f: Y %9.4f (local, ieta=2)\n", fOB1.X(), fOB1.Y()); | |
223 | printf(" fOB2 : X %9.4f: Y %9.4f (local, ieta=1)\n", fOB2.X(), fOB2.Y()); | |
224 | // fOK.Dump(); | |
1963b290 | 225 | } |
226 | } | |
227 | } | |
25ab8a31 | 228 | |
0a4cb131 | 229 | //_____________________________________________________________________________ |
25ab8a31 | 230 | Double_t AliEMCALShishKebabTrd1Module::GetThetaInDegree() const |
231 | { | |
232 | return fTheta*TMath::RadToDeg(); | |
233 | } | |
234 | ||
0a4cb131 | 235 | //_____________________________________________________________________________ |
25ab8a31 | 236 | Double_t AliEMCALShishKebabTrd1Module::GetEtaOfCenterOfModule() const |
237 | { | |
238 | return -TMath::Log(TMath::Tan(fOK.Phi()/2.)); | |
239 | } |