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1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, 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 | **************************************************************************/ |
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15 | ////////////////////////////////////////////////////////////////////////////// |
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16 | // // |
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17 | // Forward Multiplicity Detector based on Silicon plates // |
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18 | // This class contains the base procedures for the Forward Multiplicity // |
19 | // detector // |
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20 | // Detector consists of 6 Si volumes covered pseudorapidity interval // |
21 | // from 1.6 to 6.0. // |
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22 | // // |
23 | //Begin_Html |
24 | /* |
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25 | <img src="gif/AliFMDClass.gif"> |
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26 | </pre> |
27 | <br clear=left> |
28 | <font size=+2 color=red> |
29 | <p>The responsible person for this module is |
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30 | <a href="mailto:Alla.Maevskaia@cern.ch">Alla Maevskaia</a>. |
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31 | </font> |
32 | <pre> |
33 | */ |
34 | //End_Html |
35 | // // |
36 | // // |
37 | /////////////////////////////////////////////////////////////////////////////// |
38 | |
39 | #include <TTUBE.h> |
40 | #include <TNode.h> |
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41 | #include <TGeometry.h> |
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42 | #include <TTree.h> |
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43 | #include "AliRun.h" |
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44 | #include "AliMC.h" |
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45 | #include "AliFMD.h" |
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46 | #include "AliFMDhit.h" |
47 | |
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48 | ClassImp(AliFMD) |
49 | |
50 | //_____________________________________________________________________________ |
51 | AliFMD::AliFMD(): AliDetector() |
52 | { |
53 | // |
54 | // Default constructor for class AliFMD |
55 | // |
56 | fIshunt = 0; |
57 | } |
58 | |
59 | //_____________________________________________________________________________ |
60 | AliFMD::AliFMD(const char *name, const char *title) |
61 | : AliDetector(name,title) |
62 | { |
63 | // |
64 | // Standard constructor for Forward Multiplicity Detector |
65 | // |
66 | |
67 | // |
68 | // Initialise Hit array |
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69 | fHits = new TClonesArray("AliFMDhit", 1000); |
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70 | gAlice->AddHitList(fHits); |
71 | |
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72 | fIshunt = 0; |
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73 | fIdSens1 = 0; |
74 | |
75 | SetMarkerColor(kRed); |
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76 | } |
77 | |
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78 | |
79 | AliFMD::~AliFMD() |
80 | { |
81 | delete fHits; |
82 | } |
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83 | //_____________________________________________________________________________ |
84 | void AliFMD::AddHit(Int_t track, Int_t *vol, Float_t *hits) |
85 | { |
86 | // |
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87 | // Add a hit to the list |
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88 | // |
89 | TClonesArray &lhits = *fHits; |
90 | new(lhits[fNhits++]) AliFMDhit(fIshunt,track,vol,hits); |
91 | } |
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92 | //_____________________________________________________________________________ |
93 | void AliFMD::BuildGeometry() |
94 | { |
95 | // |
96 | // Build simple ROOT TNode geometry for event display |
97 | // |
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98 | TNode *node, *top; |
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99 | const int kColorFMD = 7; |
100 | // |
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101 | top=gAlice->GetGeometry()->GetNode("alice"); |
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102 | |
103 | // FMD define the different volumes |
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104 | new TRotMatrix("rot901","rot901", 90, 0, 90, 90, 180, 0); |
105 | |
106 | new TTUBE("S_FMD0","FMD volume 0","void",4.73,17.7,1.5); |
107 | top->cd(); |
108 | node = new TNode("FMD0","FMD0","S_FMD0",0,0,64,""); |
109 | node->SetLineColor(kColorFMD); |
110 | fNodes->Add(node); |
111 | |
112 | new TTUBE("S_FMD1","FMD volume 1","void",23.4,36.,1.5); |
113 | top->cd(); |
114 | node = new TNode("FMD1","FMD1","S_FMD1",0,0,85,""); |
115 | node->SetLineColor(kColorFMD); |
116 | fNodes->Add(node); |
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117 | |
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118 | new TTUBE("S_FMD2","FMD volume 2","void",4.73,17.7,1.5); |
119 | top->cd(); |
120 | node = new TNode("FMD2","FMD2","S_FMD2",0,0,-64,""); |
121 | node->SetLineColor(kColorFMD); |
122 | fNodes->Add(node); |
123 | |
124 | new TTUBE("S_FMD3","FMD volume 3","void",23.4,36.,1.5); |
125 | top->cd(); |
126 | node = new TNode("FMD3","FMD3","S_FMD3",0,0,-85,""); |
127 | node->SetLineColor(kColorFMD); |
128 | fNodes->Add(node); |
129 | |
130 | new TTUBE("S_FMD4","FMD volume 4","void",5,15,0.015); |
131 | top->cd(); |
132 | node = new TNode("FMD4","FMD4","S_FMD4",0,0,-270,""); |
133 | node->SetLineColor(kColorFMD); |
134 | fNodes->Add(node); |
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135 | |
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136 | |
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137 | new TTUBE("S_FMD5","FMD volume 5","void",5,14,0.015); |
138 | top->cd(); |
139 | node = new TNode("FMD5","FMD5","S_FMD5",0,0,-630,""); |
140 | node->SetLineColor(kColorFMD); |
141 | fNodes->Add(node); |
142 | |
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143 | } |
144 | |
145 | //_____________________________________________________________________________ |
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146 | Int_t AliFMD::DistanceToPrimitive(Int_t px, Int_t py) |
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147 | { |
148 | // |
149 | // Calculate the distance from the mouse to the FMD on the screen |
150 | // Dummy routine |
151 | // |
152 | return 9999; |
153 | } |
154 | |
155 | //_____________________________________________________________________________ |
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156 | |
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157 | //------------------------------------------------------------------------- |
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158 | void AliFMD::Init() |
159 | { |
160 | // |
161 | // Initialis the FMD after it has been built |
162 | Int_t i; |
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163 | AliMC* pMC = AliMC::GetMC(); |
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164 | // |
165 | printf("\n"); |
166 | for(i=0;i<35;i++) printf("*"); |
167 | printf(" FMD_INIT "); |
168 | for(i=0;i<35;i++) printf("*"); |
169 | printf("\n"); |
170 | // |
171 | // Here the FMD initialisation code (if any!) |
172 | for(i=0;i<80;i++) printf("*"); |
173 | printf("\n"); |
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174 | // |
175 | // |
176 | fIdSens1=pMC->VolId("GFSI"); //Si sensetive volume |
177 | |
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178 | } |
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179 | //--------------------------------------------------------------------- |
180 | void AliFMD::MakeBranch(Option_t* option) |
181 | { |
182 | // Create Tree branches for the FMD. |
183 | Int_t buffersize = 4000; |
184 | char branchname[10]; |
185 | sprintf(branchname,"%s",GetName()); |
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186 | |
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187 | AliDetector::MakeBranch(option); |
188 | |
189 | if (fDigits && gAlice->TreeD()) { |
190 | gAlice->TreeD()->Branch(branchname,&fDigits, buffersize); |
191 | printf("Making Branch %s for digits\n",branchname); |
192 | } |
193 | } |
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194 | |
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195 | //--------------------------------------------------------------------- |
196 | |
197 | void AliFMD::Eta2Radius(Float_t eta, Float_t zDisk, Float_t *radius) |
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198 | { |
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199 | Float_t expEta=TMath::Exp(-eta); |
200 | Float_t theta=TMath::ATan(expEta); |
201 | theta=2.*theta; |
202 | Float_t rad=zDisk*(TMath::Tan(theta)); |
203 | *radius=rad; |
204 | |
205 | printf(" eta %f radius %f\n", eta, rad); |
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206 | } |
207 | |
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208 | |
209 | |
210 | |
211 | |