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4347b38f | 1 | /************************************************************************** |
2 | * Copyright(c) 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 | ||
ba224443 | 18 | //____________________________________________________________________ |
4347b38f | 19 | // |
20 | // Concrete implementation of AliFMDSubDetector | |
21 | // | |
22 | // This implements the geometry for FMD3 | |
23 | // | |
e802be3e | 24 | #include "TVirtualMC.h" // ROOT_TVirtualMC |
25 | #include "TCONS.h" // ROOT_TCONS | |
26 | #include "TNode.h" // ROOT_TNode | |
27 | #include "TList.h" // ROOT_TList | |
28 | #include "AliFMD3.h" // ALIFMD3_H | |
29 | #include "AliLog.h" // ALILOG_H | |
30 | #include "AliFMDRing.h" // ALIFMDRING_H | |
31 | #include <Riostream.h> // ROOT_Riostream | |
4347b38f | 32 | |
33 | //____________________________________________________________________ | |
34 | ClassImp(AliFMD3); | |
35 | ||
36 | //____________________________________________________________________ | |
37 | AliFMD3::AliFMD3() | |
ba224443 | 38 | : AliFMDSubDetector(3), |
39 | fVolumeId(0), | |
40 | fDz(0) | |
41 | { | |
42 | // Default constructor for the FMD3 sub-detector | |
43 | } | |
44 | ||
4347b38f | 45 | |
46 | //____________________________________________________________________ | |
47 | AliFMD3::~AliFMD3() | |
ba224443 | 48 | { |
49 | // Destructor - does nothing | |
50 | } | |
51 | ||
4347b38f | 52 | |
53 | //____________________________________________________________________ | |
54 | void | |
55 | AliFMD3::SetupGeometry(Int_t airId, Int_t kaptionId) | |
56 | { | |
ba224443 | 57 | // Setup the FMD3 sub-detector geometry |
58 | // | |
59 | // Parameters: | |
60 | // | |
61 | // airId Id # of the Air medium | |
62 | // kaptionId Id # of the Aluminium medium | |
63 | // | |
4347b38f | 64 | fInnerHoneyLowR = fInner->GetLowR() + 1; |
65 | fInnerHoneyHighR = fInner->GetHighR() + 1; | |
66 | fOuterHoneyLowR = fOuter->GetLowR() + 1; | |
67 | fOuterHoneyHighR = fOuter->GetHighR() + 1; | |
68 | ||
ba224443 | 69 | CalculateDz(); |
4347b38f | 70 | Double_t par[3]; |
71 | par[0] = fInner->GetLowR(); | |
72 | par[1] = fOuterHoneyHighR; | |
ba224443 | 73 | par[2] = fDz; |
4347b38f | 74 | fVolumeId = gMC->Gsvolu("FMD3", "TUBE", airId, par, 3); |
75 | ||
76 | gMC->Matrix(fRotationId, 90, 0, 90, 90, 0, 0); | |
77 | //0, 180, 90, 90, 180, 0); | |
78 | ||
79 | AliFMDSubDetector::SetupGeometry(airId, kaptionId); | |
80 | } | |
81 | ||
82 | //____________________________________________________________________ | |
83 | void | |
84 | AliFMD3::Geometry(const char* mother, Int_t pbRotId, | |
85 | Int_t idRotId, Double_t z) | |
86 | { | |
ba224443 | 87 | // Position the FMD3 sub-detector volume |
88 | // | |
89 | // Parameters | |
90 | // | |
91 | // mother name of the mother volume | |
92 | // pbRotId Printboard roation matrix ID | |
93 | // idRotId Identity rotation matrix ID | |
94 | // z Z position (not really used here, but passed down) | |
95 | // | |
4347b38f | 96 | z = fInnerZ - fDz; |
97 | gMC->Gspos("FMD3", 1, mother, 0, 0, z, fRotationId); | |
98 | ||
99 | AliFMDSubDetector::Geometry("FMD3", pbRotId, idRotId, z); | |
100 | } | |
101 | ||
102 | ||
ba224443 | 103 | //____________________________________________________________________ |
104 | void | |
105 | AliFMD3::SimpleGeometry(TList* nodes, | |
106 | TNode* mother, | |
107 | Int_t colour, | |
108 | Double_t zMother) | |
109 | { | |
110 | // We need to get the equation for the line that connects the | |
111 | // outer circumfrences of the two rings, as well as for the line | |
112 | // that connects the inner curcumfrences, so that we can project to | |
113 | // where the honey-comb actually ends. | |
114 | // | |
115 | // we have | |
116 | // | |
117 | // y = a * x + b | |
118 | // b = y - a * x; | |
119 | // | |
120 | // For the outer line, we have the two equations | |
121 | // | |
122 | // fOuterHoneyHighR = a * x1 + b; | |
123 | // fInnerHoneyHighR = a * x2 + b; | |
124 | // | |
125 | // where | |
126 | // | |
127 | // x1 = (fOuterZ + fOuter->fSiThickness + fOuter->fPrintboardThickness | |
128 | // + fOuter->fLegLength + fModuleSpacing) | |
129 | // = fInner - fDz + fHoneycombThickness | |
130 | // x2 = (fInnerZ + fInner->fSiThickness + fInner->fPrintboardThickness | |
131 | // + fInner->fLegLength + fModuleSpacing) | |
132 | // | |
133 | // and | |
134 | // | |
135 | // a = (fOuterHoneyHighR - fInnerHoneyHighR) / (x1 - x2) | |
136 | // | |
137 | // | |
138 | CalculateDz(); | |
139 | #if 1 | |
140 | Double_t x1 = (fOuterZ - (fOuter->GetSiThickness() | |
141 | + fOuter->GetPrintboardThickness() | |
142 | + fOuter->GetLegLength() | |
143 | + fOuter->GetModuleSpacing())); | |
144 | Double_t x2 = (fInnerZ - (fInner->GetSiThickness() | |
145 | + fInner->GetPrintboardThickness() | |
146 | + fInner->GetLegLength() | |
147 | + fInner->GetModuleSpacing())); | |
148 | Double_t ao = 0; | |
149 | Double_t ao1 = (fOuterHoneyHighR - fInnerHoneyHighR) / (x1 - x2); | |
150 | Double_t ao2 = ((fOuter->GetHighR() - fInner->GetHighR()) | |
151 | / (fOuterZ - fInnerZ)); | |
152 | Double_t bo = 0; | |
153 | if (ao2 > ao1) { | |
e802be3e | 154 | // std::cout << "Wafer determinds the size" << std::endl; |
ba224443 | 155 | ao = ao2; |
156 | bo = fInner->GetHighR() - ao * fInnerZ; | |
157 | } | |
158 | else { | |
159 | ao = ao1; | |
160 | bo = fOuterHoneyHighR - ao * x1; | |
161 | } | |
162 | ||
163 | Double_t y1o = ao * (fInnerZ - 2 * fDz) + bo; | |
164 | Double_t y2o = ao * fInnerZ + bo; | |
165 | #endif | |
166 | // We probably need to make a PCON here. | |
167 | TShape* shape = new TCONS("FMD3", "FMD3", "", fDz, | |
168 | fOuter->GetLowR(), y1o, /* fOuterHoneyHighR, */ | |
169 | fInner->GetLowR(), y2o, /* fInnerHoneyHighR, */ | |
170 | 0, 360); | |
171 | mother->cd(); | |
172 | zMother = fInnerZ - fDz; | |
173 | TNode* node = new TNode("FMD3", "FMD3", shape, 0, 0, zMother, 0); | |
174 | node->SetVisibility(0); | |
175 | nodes->Add(node); | |
176 | AliFMDSubDetector::SimpleGeometry(nodes, node, colour, zMother); | |
177 | } | |
178 | ||
179 | //____________________________________________________________________ | |
180 | void | |
181 | AliFMD3::CalculateDz() | |
182 | { | |
183 | if (fDz > 0) return; | |
184 | fDz = (TMath::Abs(fInnerZ - fOuterZ) | |
185 | + fOuter->GetSiThickness() | |
186 | + fOuter->GetPrintboardThickness() | |
187 | + fOuter->GetLegLength() | |
188 | + fOuter->GetModuleSpacing() | |
189 | + fHoneycombThickness) / 2; | |
190 | } | |
4347b38f | 191 | |
192 | //____________________________________________________________________ | |
193 | // | |
194 | // EOF | |
195 | // |