1 | <!-- ******************************************************** --> |
---|
2 | <!-- --> |
---|
3 | <!-- [History] --> |
---|
4 | <!-- Converted to DocBook: Katsuya Amako, Aug-2006 --> |
---|
5 | <!-- Changed by: Gabriele Cosmo, 18-Apr-2005 --> |
---|
6 | <!-- --> |
---|
7 | <!-- ******************************************************** --> |
---|
8 | |
---|
9 | |
---|
10 | <!-- ******************* Section (Level#2) ****************** --> |
---|
11 | <sect2 id="sect.Geom.Edit"> |
---|
12 | <title> |
---|
13 | A Simple Geometry Editor |
---|
14 | </title> |
---|
15 | |
---|
16 | <para> |
---|
17 | GGE is the Geant4 Graphical Geometry Editor. It is implemented |
---|
18 | in JAVA and is part of the Momo environment. GGE aims to serve |
---|
19 | physicists who have a little knowledge of C++ and the Geant4 |
---|
20 | toolkit to construct his or her own detector geometry in a |
---|
21 | graphical manner. |
---|
22 | </para> |
---|
23 | |
---|
24 | <para> |
---|
25 | GGE provides methods to: |
---|
26 | |
---|
27 | <orderedlist spacing="compact"> |
---|
28 | <listitem><para> |
---|
29 | construct a detector geometry including <literal>G4Element</literal>, |
---|
30 | <literal>G4Material</literal>, <literal>G4Solids</literal>, |
---|
31 | <literal>G4LogicalVolume</literal>, |
---|
32 | <literal>G4PVPlacement</literal>, etc. |
---|
33 | </para></listitem> |
---|
34 | <listitem><para> |
---|
35 | view the detector geometry using existing visualization system like DAWN |
---|
36 | </para></listitem> |
---|
37 | <listitem><para> |
---|
38 | keep the detector object in a persistent way |
---|
39 | </para></listitem> |
---|
40 | <listitem><para> |
---|
41 | produce corresponding C++ codes after the norm of Geant4 toolkit |
---|
42 | </para></listitem> |
---|
43 | <listitem><para> |
---|
44 | make a Geant4 executable under adequate environment |
---|
45 | </para></listitem> |
---|
46 | </orderedlist> |
---|
47 | </para> |
---|
48 | |
---|
49 | <para> |
---|
50 | GGE is implemented with Java, using Java Foundation Class, |
---|
51 | Swing and is part of Java MOMO Framework. In essence, GGE is made |
---|
52 | a set of tables which contain all relevant parameters to construct |
---|
53 | a simple detector geometry. |
---|
54 | </para> |
---|
55 | |
---|
56 | <para> |
---|
57 | The software, installation instructions and notes for GGE and other |
---|
58 | JAVA-based UI tools part of the MOMO Framework can be found in the |
---|
59 | Geant4 distribution under the <literal>geant4/enviroments/MOMO</literal> |
---|
60 | directory. |
---|
61 | </para> |
---|
62 | |
---|
63 | <!-- ******************* Section (Level#3) ****************** --> |
---|
64 | <sect3 id="sect.Geom.Edit.Mate"> |
---|
65 | <title> |
---|
66 | Materials: elements and mixtures |
---|
67 | </title> |
---|
68 | |
---|
69 | <para> |
---|
70 | GGE provides the database of elements in a form of the periodic |
---|
71 | table, which users can use to construct new materials. GGE provides |
---|
72 | a pre-constructed database of materials taken from the PDG book. |
---|
73 | They can be loaded, used, edited and saved as persistent |
---|
74 | objects. |
---|
75 | </para> |
---|
76 | |
---|
77 | <para> |
---|
78 | Users can also create new materials either from scratch or by |
---|
79 | combining other materials. |
---|
80 | |
---|
81 | <itemizedlist spacing="compact"> |
---|
82 | <listitem><para> |
---|
83 | creating a material from scratch: |
---|
84 | <para> |
---|
85 | <informaltable> |
---|
86 | <tgroup cols="11"> |
---|
87 | <tbody> |
---|
88 | <row> |
---|
89 | <entry>Use</entry> |
---|
90 | <entry>Name</entry> |
---|
91 | <entry>A</entry> |
---|
92 | <entry>Z</entry> |
---|
93 | <entry>Density</entry> |
---|
94 | <entry>Unit</entry> |
---|
95 | <entry>State</entry> |
---|
96 | <entry>Temperature</entry> |
---|
97 | <entry>Unit</entry> |
---|
98 | <entry>Pressure</entry> |
---|
99 | <entry>Unit</entry> |
---|
100 | </row> |
---|
101 | </tbody> |
---|
102 | </tgroup> |
---|
103 | </informaltable> |
---|
104 | </para> |
---|
105 | <para> |
---|
106 | Only the elements and materials used in the logical volumes are |
---|
107 | kept in the detector object and are used to generate C++ |
---|
108 | constructors. <emphasis role="bold">Use</emphasis> marks the used materials. |
---|
109 | </para> |
---|
110 | </para></listitem> |
---|
111 | <listitem><para> |
---|
112 | Constructor to create a material from a combination of |
---|
113 | elements, subsequently added via <literal>AddElement</literal> |
---|
114 | <para> |
---|
115 | <informaltable> |
---|
116 | <tgroup cols="9"> |
---|
117 | <tbody> |
---|
118 | <row> |
---|
119 | <entry>Use</entry> |
---|
120 | <entry>Name</entry> |
---|
121 | <entry>Elements</entry> |
---|
122 | <entry>Density</entry> |
---|
123 | <entry>Unit</entry> |
---|
124 | <entry>State</entry> |
---|
125 | <entry>Temperature</entry> |
---|
126 | <entry>Unit</entry> |
---|
127 | <entry>Pressure</entry> |
---|
128 | <entry>Unit</entry> |
---|
129 | </row> |
---|
130 | </tbody> |
---|
131 | </tgroup> |
---|
132 | </informaltable> |
---|
133 | </para> |
---|
134 | |
---|
135 | <para> |
---|
136 | By clicking the column <emphasis role="bold">Elements</emphasis>, a new |
---|
137 | window is open to select one of two methods: |
---|
138 | |
---|
139 | <itemizedlist spacing="compact"> |
---|
140 | <listitem><para> |
---|
141 | Add an element, giving fraction by weight |
---|
142 | </para></listitem> |
---|
143 | <listitem><para> |
---|
144 | Add an element, giving number of atoms. |
---|
145 | </para></listitem> |
---|
146 | </itemizedlist> |
---|
147 | </para> |
---|
148 | </para></listitem> |
---|
149 | </itemizedlist> |
---|
150 | </para> |
---|
151 | |
---|
152 | </sect3> |
---|
153 | |
---|
154 | <!-- ******************* Section (Level#3) ****************** --> |
---|
155 | <sect3 id="sect.Geom.Edit.Solids"> |
---|
156 | <title> |
---|
157 | Solids |
---|
158 | </title> |
---|
159 | |
---|
160 | <para> |
---|
161 | The most popular CSG solids (<literal>G4Box</literal>, <literal>G4Tubs</literal>, |
---|
162 | <literal>G4Cons</literal>, <literal>G4Trd</literal>) and specific BREPs solids |
---|
163 | (Pcons, Pgons) are supported at present. All related parameters of such a |
---|
164 | solid can be specified in a parameter widget. |
---|
165 | </para> |
---|
166 | |
---|
167 | <para> |
---|
168 | Users will be able to view each solid using DAWN. |
---|
169 | </para> |
---|
170 | |
---|
171 | </sect3> |
---|
172 | |
---|
173 | <!-- ******************* Section (Level#3) ****************** --> |
---|
174 | <sect3 id="sect.Geom.Edit.LogVol"> |
---|
175 | <title> |
---|
176 | Logical Volume |
---|
177 | </title> |
---|
178 | |
---|
179 | <para> |
---|
180 | GGE can specify the following items: |
---|
181 | |
---|
182 | <informaltable> |
---|
183 | <tgroup cols="4"> |
---|
184 | <tbody> |
---|
185 | <row> |
---|
186 | <entry>Name</entry> |
---|
187 | <entry>Solid</entry> |
---|
188 | <entry>Material</entry> |
---|
189 | <entry>VisAttribute</entry> |
---|
190 | </row> |
---|
191 | </tbody> |
---|
192 | </tgroup> |
---|
193 | </informaltable> |
---|
194 | </para> |
---|
195 | |
---|
196 | <para> |
---|
197 | The construction and assignment of appropriate entities for |
---|
198 | <literal>G4FieldManager</literal> and <literal>G4VSensitiveDetector</literal> |
---|
199 | are left to the user. |
---|
200 | </para> |
---|
201 | |
---|
202 | </sect3> |
---|
203 | |
---|
204 | <!-- ******************* Section (Level#3) ****************** --> |
---|
205 | <sect3 id="sect.Geom.Edit.PhysVol"> |
---|
206 | <title> |
---|
207 | Physical Volume |
---|
208 | </title> |
---|
209 | |
---|
210 | <para> |
---|
211 | A single copy of a physical volume can be created. Also repeated |
---|
212 | copies can be created in several manners. First, a user can |
---|
213 | translate the logical volume linearly. |
---|
214 | |
---|
215 | <informaltable> |
---|
216 | <tgroup cols="9"> |
---|
217 | <tbody> |
---|
218 | <row> |
---|
219 | <entry>Name</entry> |
---|
220 | <entry>LogicalVolume</entry> |
---|
221 | <entry>MotherVolume</entry> |
---|
222 | <entry>Many</entry> |
---|
223 | <entry>X0, Y0, Z0</entry> |
---|
224 | <entry>Direction</entry> |
---|
225 | <entry>StepSize</entry> |
---|
226 | <entry>Unit</entry> |
---|
227 | <entry>CopyNumber</entry> |
---|
228 | </row> |
---|
229 | </tbody> |
---|
230 | </tgroup> |
---|
231 | </informaltable> |
---|
232 | </para> |
---|
233 | |
---|
234 | <para> |
---|
235 | Combined translation and rotation are also possible, placing an |
---|
236 | object repeatedly on a ``cylindrical'' pattern. Simple models of |
---|
237 | replicas and parametrised volume are also implemented. In the |
---|
238 | replicas, a volume is slices to create new sub-volumes. In |
---|
239 | parametrised volumes, several patterns of volumes can be |
---|
240 | created. |
---|
241 | </para> |
---|
242 | |
---|
243 | </sect3> |
---|
244 | |
---|
245 | <!-- ******************* Section (Level#3) ****************** --> |
---|
246 | <sect3 id="sect.Geom.Edit.GeneCode"> |
---|
247 | <title> |
---|
248 | Generation of C++ code: <literal>MyDetectorConstruction.cc</literal> |
---|
249 | </title> |
---|
250 | |
---|
251 | <para> |
---|
252 | By simply pushing a button, source code in the form of an |
---|
253 | include file and a source file are created. They are called |
---|
254 | <literal>MyDetectorConstruction.cc</literal> and <literal>.hh</literal> files. |
---|
255 | They reflect all current user modifications in real-time. |
---|
256 | </para> |
---|
257 | |
---|
258 | </sect3> |
---|
259 | |
---|
260 | <!-- ******************* Section (Level#3) ****************** --> |
---|
261 | <sect3 id="sect.Geom.Edit.Vis"> |
---|
262 | <title> |
---|
263 | Visualization |
---|
264 | </title> |
---|
265 | |
---|
266 | <para> |
---|
267 | Examples of individual solids can be viewed with the help of |
---|
268 | DAWN. The visualization of the whole geometry is be done after the |
---|
269 | compilation of the source code <literal>MyDetectorConstruction.cc</literal> |
---|
270 | with appropriate parts of Geant4. (In particular only the geometry |
---|
271 | and visualization, together with the small other parts they depend |
---|
272 | on, are needed.) |
---|
273 | </para> |
---|
274 | |
---|
275 | |
---|
276 | </sect3> |
---|
277 | </sect2> |
---|