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4ac75127 | 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 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | //____________________________________________________________________ | |
19 | // | |
20 | // Forward Multiplicity Detector based on Silicon wafers. This class | |
21 | // contains the base procedures for the Forward Multiplicity detector | |
22 | // Detector consists of 3 sub-detectors FMD1, FMD2, and FMD3, each of | |
23 | // which has 1 or 2 rings of silicon sensors. | |
24 | // | |
25 | // This is the base class for all FMD manager classes. | |
26 | // | |
27 | // The actual code is done by various separate classes. Below is | |
28 | // diagram showing the relationship between the various FMD classes | |
29 | // that handles the simulation | |
30 | // | |
31 | // +--------+ 1 +-----------------+ | |
32 | // | AliFMD |<>-----| AliFMDSimulator | | |
33 | // +--------+ +-----------------+ | |
34 | // ^ | |
35 | // | | |
36 | // +-------------+-------------+ | |
37 | // | | | |
38 | // +--------------------+ +-------------------+ | |
39 | // | AliFMDGeoSimulator | | AliFMDG3Simulator | | |
40 | // +--------------------+ +-------------------+ | |
41 | // ^ | |
42 | // | | |
43 | // +----------------------+ | |
44 | // | AliFMDG3OldSimulator | | |
45 | // +----------------------+ | |
46 | // | |
47 | // | |
48 | // * AliFMD | |
49 | // This defines the interface for the various parts of AliROOT that | |
50 | // uses the FMD, like AliFMDSimulator, AliFMDDigitizer, | |
51 | // AliFMDReconstructor, and so on. | |
52 | // | |
53 | // * AliFMDSimulator | |
54 | // This is the base class for the FMD simulation tasks. The | |
55 | // simulator tasks are responsible to implment the geoemtry, and | |
56 | // process hits. | |
57 | // | |
58 | // * AliFMDGeoSimulator | |
59 | // This is a concrete implementation of the AliFMDSimulator that | |
60 | // uses the TGeo classes directly only. This defines the active | |
61 | // volume as an ONLY XTRU shape with a divided MANY TUBS shape | |
62 | // inside to implement the particular shape of the silicon | |
63 | // sensors. | |
64 | // | |
65 | // * AliFMDG3OldSimulator | |
66 | // This is a concrete implementation of the AliFMDSimulator that | |
67 | // uses the TVirtualMC interface with GEANT 3.21-like messages. | |
68 | // This implements the active volume as a divided TUBS shape. Hits | |
69 | // in the corners should be cut away at run time (but currently | |
70 | // isn't). | |
71 | // | |
72 | #include <math.h> | |
73 | #include "AliFMDGeoOldSimulator.h" // ALIFMDG3OLDSIMULATOR_H | |
74 | #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H | |
75 | #include "AliFMDDetector.h" // ALIFMDDETECTOR_H | |
76 | #include "AliFMDRing.h" // ALIFMDRING_H | |
77 | #include "AliFMD1.h" // ALIFMD1_H | |
78 | #include "AliFMD2.h" // ALIFMD2_H | |
79 | #include "AliFMD3.h" // ALIFMD3_H | |
80 | #include "AliFMD.h" // ALIFMD_H | |
81 | #include <AliLog.h> // ALILOG_H | |
82 | #include <TVector2.h> // ROOT_TVector2 | |
83 | #include <TVirtualMC.h> // ROOT_TVirtualMC | |
84 | #include <TArrayI.h> // ROOT_TArrayI | |
85 | #include <TGeoVolume.h> // ROOT_TGeoVolume | |
86 | #include <TGeoTube.h> // ROOT_TGeoTube | |
87 | #include <TGeoMatrix.h> // ROOT_TGeoMatrix | |
88 | ||
89 | //==================================================================== | |
90 | ClassImp(AliFMDGeoOldSimulator) | |
91 | #if 0 | |
92 | ; // This is here to keep Emacs for indenting the next line | |
93 | #endif | |
94 | ||
95 | //____________________________________________________________________ | |
96 | AliFMDGeoOldSimulator::AliFMDGeoOldSimulator() | |
97 | { | |
98 | // Default constructor | |
99 | fSectorOff = 1; | |
100 | fModuleOff = -1; | |
101 | fRingOff = 3; | |
102 | fDetectorOff = 4; | |
103 | fUseDivided = kTRUE; | |
104 | } | |
105 | ||
106 | //____________________________________________________________________ | |
107 | AliFMDGeoOldSimulator::AliFMDGeoOldSimulator(AliFMD* fmd, Bool_t detailed) | |
108 | : AliFMDGeoSimulator(fmd, detailed) | |
109 | { | |
110 | // Normal constructor | |
111 | // | |
112 | // Parameters: | |
113 | // | |
114 | // fmd Pointer to AliFMD object | |
115 | // detailed Whether to make a detailed simulation or not | |
116 | // | |
117 | fSectorOff = 1; | |
118 | fModuleOff = -1; | |
119 | fRingOff = 3; | |
120 | fDetectorOff = 4; | |
121 | fUseDivided = kTRUE; | |
122 | } | |
123 | ||
124 | //____________________________________________________________________ | |
125 | TGeoVolume* | |
126 | AliFMDGeoOldSimulator::RingGeometry(AliFMDRing* r) | |
127 | { | |
128 | // Setup the geometry of a ring. The defined TGeoVolume is | |
129 | // returned, and should be used when setting up the rest of the | |
130 | // volumes. | |
131 | // | |
132 | // Parameters: | |
133 | // | |
134 | // r Pointer to ring geometry object | |
135 | // | |
136 | // Returns: | |
137 | // true on success | |
138 | // | |
139 | if (!r) { | |
140 | AliError("Didn't get a ring object"); | |
e5a79c1a | 141 | return 0x0; |
4ac75127 | 142 | } |
143 | Char_t id = r->GetId(); | |
144 | Double_t siThick = r->GetSiThickness(); | |
145 | // const Int_t nv = r->GetNVerticies(); | |
54240c8d | 146 | //TVector2* a = r->GetVertex(5); |
4ac75127 | 147 | TVector2* b = r->GetVertex(3); |
54240c8d | 148 | //TVector2* c = r->GetVertex(4); |
4ac75127 | 149 | Double_t theta = r->GetTheta(); |
54240c8d | 150 | //Double_t off = (TMath::Tan(TMath::Pi() * theta / 180) |
151 | // * r->GetBondingWidth()); | |
4ac75127 | 152 | Double_t rmax = b->Mod(); |
153 | Double_t rmin = r->GetLowR(); | |
154 | Double_t pcbThick = r->GetPrintboardThickness(); | |
155 | Double_t copperThick = r->GetCopperThickness(); // .01; | |
156 | Double_t chipThick = r->GetChipThickness(); // .01; | |
54240c8d | 157 | //Double_t modSpace = r->GetModuleSpacing(); |
158 | //Double_t legr = r->GetLegRadius(); | |
159 | //Double_t legl = r->GetLegLength(); | |
160 | //Double_t legoff = r->GetLegOffset(); | |
4ac75127 | 161 | Int_t ns = r->GetNStrips(); |
162 | Int_t nsec = Int_t(360 / theta); | |
54240c8d | 163 | Double_t space = r->GetSpacing(); |
164 | //Double_t stripoff = a->Mod(); | |
165 | //Double_t dstrip = (rmax - stripoff) / ns; | |
4ac75127 | 166 | TString name; |
167 | TString name2; | |
4ac75127 | 168 | |
4ac75127 | 169 | Double_t ringWidth = (siThick + 2 * (pcbThick + copperThick + chipThick)); |
170 | // Virtual volume shape to divide - This volume is only defined if | |
171 | // the geometry is set to be detailed. | |
172 | // Ring mother volume | |
173 | TGeoShape* ringShape = new TGeoTube(rmin, rmax, ringWidth / 2); | |
174 | name = Form(fgkRingName, id); | |
175 | TGeoVolume* ringVolume = new TGeoVolume(name.Data(), ringShape, fAir); | |
176 | ||
177 | TGeoShape* activeShape = new TGeoTube(rmin, rmax, siThick / 2); | |
178 | name = Form(fgkActiveName, id); | |
179 | Double_t z = - ringWidth / 2 + siThick / 2; | |
180 | TGeoVolume* activeVolume = new TGeoVolume(name.Data(), activeShape, fSi); | |
181 | ringVolume->AddNode(activeVolume, 1, new TGeoTranslation(0, 0, z)); | |
182 | ||
183 | Int_t sid = activeVolume->GetNumber(); | |
184 | if (fUseDivided) { | |
185 | name = Form(fgkSectorName, id); | |
186 | TGeoVolume* sectorVolume = activeVolume->Divide(name.Data(), 2, nsec, | |
187 | 0, 0, 0, "N"); | |
188 | ||
189 | name = Form(fgkStripName, id); | |
190 | TGeoVolume* stripVolume = sectorVolume->Divide(name.Data(), 1, ns, | |
191 | 0, 0, 0, "N"); | |
192 | sid = stripVolume->GetNumber(); | |
193 | AliDebug(10, Form("Got volume id %d for volume %s", sid, name.Data())); | |
194 | } | |
195 | switch (id) { | |
196 | case 'i': | |
197 | case 'I': fActiveId[0] = sid; break; | |
198 | case 'o': | |
199 | case 'O': fActiveId[2] = sid; break; | |
200 | } | |
201 | ||
202 | // Shape of Printed circuit Board | |
203 | Double_t boardThick = (pcbThick + copperThick + chipThick); | |
54240c8d | 204 | TGeoShape* boardShape = new TGeoTube(rmin+.1, rmax-.1, boardThick/ 2); |
4ac75127 | 205 | name = Form(fgkPCBName, id, 'B'); |
206 | TGeoVolume* boardVolume = new TGeoVolume(name.Data(), boardShape, fAir); | |
54240c8d | 207 | z += siThick / 2 + space + boardThick / 2; |
4ac75127 | 208 | ringVolume->AddNode(boardVolume, 0, new TGeoTranslation(0, 0, z)); |
209 | ringVolume->AddNode(boardVolume, 1, new TGeoTranslation(0,0,z+boardThick)); | |
210 | ||
211 | // PCB | |
54240c8d | 212 | TGeoShape* pcbShape = new TGeoTube(rmin+.1,rmax-.1, pcbThick / 2); |
4ac75127 | 213 | name = Form("F%cPC", id); |
214 | z = -boardThick / 2 + pcbThick / 2; | |
215 | TGeoVolume* pcbVolume = new TGeoVolume(name.Data(), pcbShape, fPCB); | |
216 | boardVolume->AddNode(pcbVolume, 0, new TGeoTranslation(0, 0, z)); | |
217 | ||
218 | // Copper | |
219 | TGeoShape* cuShape = new TGeoTube(rmin+.1, rmax-.1, copperThick / 2); | |
220 | name = Form("F%cCO", id); | |
54240c8d | 221 | z += pcbThick / 2 + copperThick / 2; |
4ac75127 | 222 | TGeoVolume* cuVolume = new TGeoVolume(name.Data(), cuShape, fCopper); |
223 | boardVolume->AddNode(cuVolume, 0, new TGeoTranslation(0, 0, z)); | |
224 | ||
225 | // Chip | |
226 | TGeoShape* chipShape = new TGeoTube(rmin+.1, rmax-.1, chipThick / 2); | |
227 | name = Form("F%cCH", id); | |
54240c8d | 228 | z += copperThick / 2 + chipThick / 2; |
4ac75127 | 229 | TGeoVolume* chipVolume = new TGeoVolume(name.Data(), chipShape, fChip); |
230 | boardVolume->AddNode(chipVolume, 0, new TGeoTranslation(0, 0, z)); | |
231 | ||
232 | return ringVolume; | |
233 | } | |
234 | ||
235 | //____________________________________________________________________ | |
236 | // | |
237 | // EOF | |
238 | // |