1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.7 2000/01/12 15:36:28 morsch
21 Revision 1.6 1999/09/29 09:24:29 fca
22 Introduction of the Copyright and cvs Log
26 ///////////////////////////////////////////////////////////////////////////////
29 // This class contains the description of the muon absorber geometry //
33 <img src="picts/AliABSOClass.gif">
36 <font size=+2 color=red>
37 <p>The responsible person for this module is
38 <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
45 ///////////////////////////////////////////////////////////////////////////////
53 //_____________________________________________________________________________
57 // Default constructor
61 //_____________________________________________________________________________
62 AliABSO::AliABSO(const char *name, const char *title)
63 : AliModule(name,title)
66 // Standard constructor
73 //_____________________________________________________________________________
74 void AliABSO::CreateGeometry()
77 // Creation of the geometry of the muon absorber
81 //_____________________________________________________________________________
82 void AliABSO::DrawModule()
85 // Draw a shaded view of the muon absorber
90 //_____________________________________________________________________________
91 void AliABSO::CreateMaterials()
94 // Define materials for muon absorber
96 Int_t ISXFLD = gAlice->Field()->Integ();
97 Float_t SXMGMX = gAlice->Field()->Max();
99 Float_t apoly[2] = { 12.01,1. };
100 Float_t zpoly[2] = { 6.,1. };
101 Float_t wpoly[2] = { .33,.67 };
102 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,
103 28.086,39.1,40.08,55.85 };
104 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
105 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,
106 .337021,.013,.044,.014 };
107 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
108 Float_t zsteel[4] = { 26.,24.,28.,14. };
109 Float_t wsteel[4] = { .715,.18,.1,.005 };
113 Float_t aniwcu[3] ={58.6934, 183.84, 63.546};
114 Float_t zniwcu[3] ={28., 74., 29};
115 Float_t wniwcu[3] ={0.015,0.95,0.035};
119 Float_t ains[4] ={28.0855, 15.9994, 47.867, 26.982};
120 Float_t zins[4] ={14., 8. , 22. , 13. };
121 Float_t wins[4] ={ 0.3019, 0.4887, 0.1914, 0.018};
123 Float_t epsil, stmin, tmaxfd, deemax, stemax;
126 AliMaterial(6, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
127 AliMaterial(26, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
128 AliMaterial(46, "CARBON$ ", 12.01, 6., 2.265, 18.8, 49.9);
131 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
132 AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
133 AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
136 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
137 AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
138 AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
141 AliMaterial(11, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
142 AliMaterial(31, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
143 AliMaterial(51, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
146 AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
147 AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
148 AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
151 AliMixture(21, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
152 AliMixture(41, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
153 AliMixture(61, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
156 AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
157 AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
158 AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
161 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
162 AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
163 AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500.);
166 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
167 AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
168 AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
171 AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
172 AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
173 AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
176 AliMixture(18, "POLYETHYLEN$", apoly, zpoly, .95, -2, wpoly);
178 // After a call with ratios by number (negative number of elements),
179 // the ratio array is changed to the ratio by weight, so all successive
180 // calls with the same array must specify the number of elements as
183 AliMixture(38, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
184 AliMixture(58, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
187 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
188 AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
189 AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
192 AliMixture(14, "INSULATION$", ains, zins, 0.41, 4, wins);
193 AliMixture(34, "INSULATION$", ains, zins, 0.41, 4, wins);
194 AliMixture(54, "INSULATION$", ains, zins, 0.41, 4, wins);
198 // Defines tracking media parameters.
200 epsil = .001; // Tracking precision,
201 stemax = -0.01; // Maximum displacement for multiple scat
202 tmaxfd = -20.; // Maximum angle due to field deflection
203 deemax = -.3; // Maximum fractional energy loss, DLS
208 AliMedium(6, "C_C0 ", 6, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
209 AliMedium(26, "C_C1 ", 26, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
210 AliMedium(46, "C_C2 ", 46, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
213 AliMedium(9, "ALU_C0 ", 9, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
214 AliMedium(29, "ALU_C1 ", 29, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
215 AliMedium(49, "ALU_C2 ", 49, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
218 AliMedium(10, "FE_C0 ", 10, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
219 AliMedium(30, "FE_C1 ", 30, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
220 AliMedium(50, "FE_C2 ", 50, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
223 AliMedium(11, "Cu_C0 ", 11, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
224 AliMedium(31, "Cu_C1 ", 31, 0, ISXFLD, SXMGMX, tmaxfd, -stemax, deemax, epsil, stmin);
225 AliMedium(51, "Cu_C2 ", 51, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
228 AliMedium(12, "W_C0 ", 12, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
229 AliMedium(32, "W_C1 ", 32, 0, ISXFLD, SXMGMX, tmaxfd, -stemax, deemax, epsil, stmin);
230 AliMedium(52, "W_C2 ", 52, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
232 AliMedium(21, "Ni/W0 ", 21, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
233 AliMedium(41, "Ni/W1 ", 41, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
234 AliMedium(61, "Ni/W3 ", 61, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
237 AliMedium(13, "PB_C0 ", 13, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
238 AliMedium(33, "PB_C1 ", 33, 0, ISXFLD, SXMGMX, tmaxfd, -stemax, deemax, epsil, stmin);
239 AliMedium(53, "PB_C2 ", 53, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
242 AliMedium(14, "INS_C0 ", 14, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
243 AliMedium(34, "INS_C1 ", 34, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
244 AliMedium(54, "INS_C2 ", 54, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
247 AliMedium(15, "AIR_C0 ", 15, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
248 AliMedium(35, "AIR_C1 ", 35, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
249 AliMedium(55, "AIR_C2 ", 55, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
252 AliMedium(16, "VA_C0 ", 16, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
253 AliMedium(36, "VA_C1 ", 36, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
254 AliMedium(56, "VA_C2 ", 56, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
257 AliMedium(17, "CC_C0 ", 17, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
258 AliMedium(37, "CC_C1 ", 37, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
259 AliMedium(57, "CC_C2 ", 57, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
262 AliMedium(18, "CH2_C0 ", 18, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
263 AliMedium(38, "CH2_C1 ", 38, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
264 AliMedium(58, "CH2_C2 ", 58, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
267 AliMedium(19, "ST_C0 ", 19, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
268 AliMedium(39, "ST_C1 ", 39, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
269 AliMedium(59, "ST_C3 ", 59, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
272 //_____________________________________________________________________________
276 // Initialisation of the muon absorber after it has been built
280 for(i=0;i<35;i++) printf("*");
281 printf(" ABSO_INIT ");
282 for(i=0;i<35;i++) printf("*");
285 for(i=0;i<80;i++) printf("*");