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 ///////////////////////////////////////////////////////////////////////////////
20 // Muon Shield Class //
21 // This class contains a description of the muon shield //
25 <img src="picts/AliSHILClass.gif">
30 ///////////////////////////////////////////////////////////////////////////////
39 //_____________________________________________________________________________
43 // Default constructor for muon shield
47 //_____________________________________________________________________________
48 AliSHIL::AliSHIL(const char *name, const char *title)
49 : AliModule(name,title)
52 // Standard constructor for muon shield
59 //_____________________________________________________________________________
60 void AliSHIL::CreateGeometry()
63 // Build muon shield geometry
67 //_____________________________________________________________________________
68 void AliSHIL::CreateMaterials()
71 // Defines materials for the muon shield
73 Int_t isxfld = gAlice->Field()->Integ();
74 Float_t sxmgmx = gAlice->Field()->Max();
76 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
77 Float_t zsteel[4] = { 26.,24.,28.,14. };
78 Float_t wsteel[4] = { .715,.18,.1,.005 };
80 Float_t apbw[2] = { 207.2,183.85 };
81 Float_t zpbw[2] = { 82.,74. };
82 Float_t wpbw[2] = { .5,.5 };
84 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,
85 28.086,39.1,40.08,55.85 };
86 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
87 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,
88 .337021,.013,.044,.014 };
90 Float_t aniwcu[3] ={58.6934, 183.84, 63.546};
91 Float_t zniwcu[3] ={28., 74., 29};
92 Float_t wniwcu[3] ={0.015,0.95,0.035};
96 Float_t ains[4] ={28.0855, 15.9994, 47.867, 26.982};
97 Float_t zins[4] ={14., 8. , 22. , 13. };
98 Float_t wins[4] ={ 0.3019, 0.4887, 0.1914, 0.018};
100 Float_t epsil, stmin, tmaxfd, deemax, stemax;
105 // LEAD/TUNGSTEN MIXTURE
108 // --- Define the various materials for GEANT ---
110 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
111 AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
112 AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
115 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
116 AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
117 AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
121 AliMaterial(11, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
122 AliMaterial(31, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
123 AliMaterial(51, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
126 AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
127 AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
128 AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
131 AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
132 AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
133 AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
136 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
137 AliMaterial(35, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
138 AliMaterial(55, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
141 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
142 AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
143 AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
146 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
147 AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
148 AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
151 AliMixture(20, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
152 AliMixture(40, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
153 AliMixture(60, "LEAD/TUNGSTEN$", apbw, zpbw, 15.325, 2, wpbw);
156 AliMixture(21, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
157 AliMixture(41, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
158 AliMixture(61, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
161 AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
162 AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
163 AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
166 AliMixture(14, "INSULATION$", ains, zins, 0.41, 4, wins);
167 AliMixture(34, "INSULATION$", ains, zins, 0.41, 4, wins);
168 AliMixture(54, "INSULATION$", ains, zins, 0.41, 4, wins);
171 // Defines tracking media parameters.
172 // Les valeurs sont commentees pour laisser le defaut
173 // a GEANT (version 3-21, page CONS200), f.m.
174 epsil = .001; // Tracking precision,
175 stemax = -1.; // Maximum displacement for multiple scat
176 tmaxfd = -20.; // Maximum angle due to field deflection
177 deemax = -.3; // Maximum fractional energy loss, DLS
182 AliMedium(9, "ALU_C0 ", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
183 AliMedium(29, "ALU_C1 ", 29, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
184 AliMedium(49, "ALU_C2 ", 49, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
187 AliMedium(10, "FE_C0 ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
188 AliMedium(30, "FE_C1 ", 30, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
189 AliMedium(50, "FE_C2 ", 50, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
192 AliMedium(11, "Cu_C0 ", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
193 AliMedium(31, "Cu_C1 ", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
194 AliMedium(51, "Cu_C2 ", 51, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
197 AliMedium(12, "W_C0 ", 12, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
198 AliMedium(32, "W_C1 ", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
199 AliMedium(52, "W_C2 ", 52, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
202 AliMedium(13, "PB_C0 ", 13, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
203 AliMedium(33, "PB_C1 ", 33, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
204 AliMedium(53, "PB_C2 ", 53, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
207 AliMedium(14, "INS_C0 ", 14, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
208 AliMedium(34, "INS_C1 ", 34, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
209 AliMedium(54, "INS_C2 ", 54, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
212 AliMedium(15, "AIR_C0 ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
213 AliMedium(35, "AIR_C1 ", 35, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
214 AliMedium(55, "AIR_C2 ", 55, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
217 AliMedium(16, "VA_C0 ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
218 AliMedium(36, "VA_C1 ", 36, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
219 AliMedium(56, "VA_C2 ", 56, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
222 AliMedium(19, "ST_C0 ", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
223 AliMedium(39, "ST_C1 ", 39, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
224 AliMedium(59, "ST_C3 ", 59, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
227 AliMedium(20, "PB/W0 ", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
228 AliMedium(40, "PB/W1 ", 40, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
229 AliMedium(60, "PB/W3 ", 60, 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(17, "CC_C0 ", 17, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
238 AliMedium(37, "CC_C1 ", 37, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
239 AliMedium(57, "CC_C2 ", 57, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
243 //_____________________________________________________________________________
244 void AliSHIL::DrawModule ()
249 //_____________________________________________________________________________
253 // Initialise the muon shield after it has been built
258 printf("\n%s: ",ClassName());
259 for(i=0;i<35;i++) printf("*");
260 printf(" SHIL_INIT ");
261 for(i=0;i<35;i++) printf("*");
262 printf("\n%s: ",ClassName());
264 // Here the SHIL initialisation code (if any!)
265 for(i=0;i<80;i++) printf("*");