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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), |
a16179cb | 39 | fVolumeId(0) |
ba224443 | 40 | { |
41 | // Default constructor for the FMD3 sub-detector | |
42 | } | |
43 | ||
4347b38f | 44 | |
45 | //____________________________________________________________________ | |
46 | AliFMD3::~AliFMD3() | |
ba224443 | 47 | { |
48 | // Destructor - does nothing | |
49 | } | |
50 | ||
4347b38f | 51 | |
52 | //____________________________________________________________________ | |
53 | void | |
a16179cb | 54 | AliFMD3::SetupGeometry(Int_t airId, Int_t alId, Int_t carbonId) |
4347b38f | 55 | { |
ba224443 | 56 | // Setup the FMD3 sub-detector geometry |
57 | // | |
58 | // Parameters: | |
59 | // | |
60 | // airId Id # of the Air medium | |
61 | // kaptionId Id # of the Aluminium medium | |
62 | // | |
a16179cb | 63 | Double_t innerZl = fInnerZ; |
64 | Double_t innerZh = (fInnerZ | |
65 | - fInner->GetModuleSpacing() | |
66 | - fInner->GetLegLength() | |
67 | - fInner->GetSiThickness() | |
68 | - fInner->GetPrintboardThickness() | |
69 | - fHoneycombThickness); | |
70 | Double_t innerRl = fInner->GetLowR(); | |
71 | Double_t outerZl = fOuterZ; | |
72 | Double_t outerZh = (fOuterZ | |
73 | - fOuter->GetModuleSpacing() | |
74 | - fOuter->GetLegLength() | |
75 | - fOuter->GetSiThickness() | |
76 | - fOuter->GetPrintboardThickness() | |
77 | - fHoneycombThickness); | |
78 | Double_t outerRl = fOuter->GetLowR(); | |
79 | ||
80 | fSupport.SetupGeometry(airId, carbonId, | |
81 | innerZl, innerZh, innerRl, | |
82 | outerZl, outerZh, outerRl); | |
83 | ||
4347b38f | 84 | fInnerHoneyLowR = fInner->GetLowR() + 1; |
a16179cb | 85 | fInnerHoneyHighR = fSupport.ConeR(innerZh + fHoneycombThickness, "I"); |
4347b38f | 86 | fOuterHoneyLowR = fOuter->GetLowR() + 1; |
a16179cb | 87 | fOuterHoneyHighR = fSupport.GetBackLowR(); |
4347b38f | 88 | |
a16179cb | 89 | // Identity matrix |
4347b38f | 90 | gMC->Matrix(fRotationId, 90, 0, 90, 90, 0, 0); |
91 | //0, 180, 90, 90, 180, 0); | |
92 | ||
a16179cb | 93 | AliFMDSubDetector::SetupGeometry(airId, alId, carbonId); |
4347b38f | 94 | } |
95 | ||
96 | //____________________________________________________________________ | |
97 | void | |
98 | AliFMD3::Geometry(const char* mother, Int_t pbRotId, | |
99 | Int_t idRotId, Double_t z) | |
100 | { | |
ba224443 | 101 | // Position the FMD3 sub-detector volume |
102 | // | |
103 | // Parameters | |
104 | // | |
105 | // mother name of the mother volume | |
106 | // pbRotId Printboard roation matrix ID | |
107 | // idRotId Identity rotation matrix ID | |
108 | // z Z position (not really used here, but passed down) | |
109 | // | |
a16179cb | 110 | z = fSupport.GetZ(); |
111 | AliDebug(10, Form("Passing z=%lf to ring volumes", z)); | |
4347b38f | 112 | AliFMDSubDetector::Geometry("FMD3", pbRotId, idRotId, z); |
a16179cb | 113 | fSupport.Geometry(mother, fRotationId, z); |
4347b38f | 114 | } |
115 | ||
116 | ||
ba224443 | 117 | //____________________________________________________________________ |
118 | void | |
119 | AliFMD3::SimpleGeometry(TList* nodes, | |
120 | TNode* mother, | |
121 | Int_t colour, | |
122 | Double_t zMother) | |
123 | { | |
124 | // We need to get the equation for the line that connects the | |
125 | // outer circumfrences of the two rings, as well as for the line | |
126 | // that connects the inner curcumfrences, so that we can project to | |
127 | // where the honey-comb actually ends. | |
128 | // | |
129 | // we have | |
130 | // | |
131 | // y = a * x + b | |
132 | // b = y - a * x; | |
133 | // | |
134 | // For the outer line, we have the two equations | |
135 | // | |
136 | // fOuterHoneyHighR = a * x1 + b; | |
137 | // fInnerHoneyHighR = a * x2 + b; | |
138 | // | |
139 | // where | |
140 | // | |
141 | // x1 = (fOuterZ + fOuter->fSiThickness + fOuter->fPrintboardThickness | |
142 | // + fOuter->fLegLength + fModuleSpacing) | |
143 | // = fInner - fDz + fHoneycombThickness | |
144 | // x2 = (fInnerZ + fInner->fSiThickness + fInner->fPrintboardThickness | |
145 | // + fInner->fLegLength + fModuleSpacing) | |
146 | // | |
147 | // and | |
148 | // | |
149 | // a = (fOuterHoneyHighR - fInnerHoneyHighR) / (x1 - x2) | |
150 | // | |
151 | // | |
a16179cb | 152 | Double_t dz = (TMath::Abs(fInnerZ - fOuterZ) |
153 | + fOuter->GetSiThickness() | |
154 | + fOuter->GetPrintboardThickness() | |
155 | + fOuter->GetLegLength() | |
156 | + fOuter->GetModuleSpacing() | |
157 | + fHoneycombThickness) / 2; | |
ba224443 | 158 | #if 1 |
159 | Double_t x1 = (fOuterZ - (fOuter->GetSiThickness() | |
160 | + fOuter->GetPrintboardThickness() | |
161 | + fOuter->GetLegLength() | |
162 | + fOuter->GetModuleSpacing())); | |
163 | Double_t x2 = (fInnerZ - (fInner->GetSiThickness() | |
164 | + fInner->GetPrintboardThickness() | |
165 | + fInner->GetLegLength() | |
166 | + fInner->GetModuleSpacing())); | |
167 | Double_t ao = 0; | |
168 | Double_t ao1 = (fOuterHoneyHighR - fInnerHoneyHighR) / (x1 - x2); | |
169 | Double_t ao2 = ((fOuter->GetHighR() - fInner->GetHighR()) | |
170 | / (fOuterZ - fInnerZ)); | |
171 | Double_t bo = 0; | |
172 | if (ao2 > ao1) { | |
e802be3e | 173 | // std::cout << "Wafer determinds the size" << std::endl; |
ba224443 | 174 | ao = ao2; |
175 | bo = fInner->GetHighR() - ao * fInnerZ; | |
176 | } | |
177 | else { | |
178 | ao = ao1; | |
179 | bo = fOuterHoneyHighR - ao * x1; | |
180 | } | |
181 | ||
a16179cb | 182 | Double_t y1o = ao * (fInnerZ - 2 * dz) + bo; |
ba224443 | 183 | Double_t y2o = ao * fInnerZ + bo; |
184 | #endif | |
185 | // We probably need to make a PCON here. | |
a16179cb | 186 | TShape* shape = new TCONS("FMD3", "FMD3", "", dz, |
ba224443 | 187 | fOuter->GetLowR(), y1o, /* fOuterHoneyHighR, */ |
188 | fInner->GetLowR(), y2o, /* fInnerHoneyHighR, */ | |
189 | 0, 360); | |
190 | mother->cd(); | |
a16179cb | 191 | zMother = fInnerZ - dz; |
ba224443 | 192 | TNode* node = new TNode("FMD3", "FMD3", shape, 0, 0, zMother, 0); |
193 | node->SetVisibility(0); | |
194 | nodes->Add(node); | |
195 | AliFMDSubDetector::SimpleGeometry(nodes, node, colour, zMother); | |
196 | } | |
197 | ||
198 | //____________________________________________________________________ | |
199 | void | |
a16179cb | 200 | AliFMD3::Gsatt() |
ba224443 | 201 | { |
a16179cb | 202 | AliFMDSubDetector::Gsatt(); |
203 | fSupport.Gsatt(); | |
ba224443 | 204 | } |
4347b38f | 205 | |
206 | //____________________________________________________________________ | |
207 | // | |
208 | // EOF | |
209 | // |