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4c039060 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
eeacf08b 16/* $Id$ */
4c039060 17
fe4da5cc 18///////////////////////////////////////////////////////////////////////////////
19// //
20// Muon ABSOrber //
21// This class contains the description of the muon absorber geometry //
22// //
23//Begin_Html
24/*
1439f98e 25<img src="picts/AliABSOClass.gif">
fe4da5cc 26</pre>
27<br clear=left>
28<font size=+2 color=red>
29<p>The responsible person for this module is
30<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
31</font>
32<pre>
33*/
34//End_Html
35// //
36// //
37///////////////////////////////////////////////////////////////////////////////
38
39#include "AliABSO.h"
40#include "AliRun.h"
94de3818 41#include "AliMagF.h"
fe4da5cc 42#include "AliConst.h"
43
44ClassImp(AliABSO)
45
46//_____________________________________________________________________________
47AliABSO::AliABSO()
48{
49 //
50 // Default constructor
51 //
52}
53
54//_____________________________________________________________________________
55AliABSO::AliABSO(const char *name, const char *title)
b8032157 56 : AliModule(name,title)
fe4da5cc 57{
58 //
59 // Standard constructor
60 //
61 SetMarkerColor(7);
62 SetMarkerStyle(2);
63 SetMarkerSize(0.4);
64}
65
fe4da5cc 66//_____________________________________________________________________________
67void AliABSO::CreateGeometry()
68{
69 //
70 // Creation of the geometry of the muon absorber
71 //
fe4da5cc 72}
73
74//_____________________________________________________________________________
b8032157 75void AliABSO::DrawModule()
fe4da5cc 76{
77 //
78 // Draw a shaded view of the muon absorber
79 //
fe4da5cc 80}
81
3f4d1718 82
fe4da5cc 83//_____________________________________________________________________________
84void AliABSO::CreateMaterials()
85{
86 //
87 // Define materials for muon absorber
88 //
b43eb0dc 89 Int_t isxfld = gAlice->Field()->Integ();
90 Float_t sxmgmx = gAlice->Field()->Max();
002b3738 91//
92// Air
93//
94 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
95 Float_t zAir[4]={6.,7.,8.,18.};
96 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
97 Float_t dAir = 1.20479E-3;
98
99//
100// Polyethylene
101//
fe4da5cc 102 Float_t apoly[2] = { 12.01,1. };
103 Float_t zpoly[2] = { 6.,1. };
104 Float_t wpoly[2] = { .33,.67 };
002b3738 105//
106// Concrete
107//
fe4da5cc 108 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,
109 28.086,39.1,40.08,55.85 };
110 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
111 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,
112 .337021,.013,.044,.014 };
002b3738 113//
114// Steel
115//
fe4da5cc 116 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
117 Float_t zsteel[4] = { 26.,24.,28.,14. };
118 Float_t wsteel[4] = { .715,.18,.1,.005 };
3f4d1718 119//
120//
121// Ni-Cu-W alloy
122 Float_t aniwcu[3] ={58.6934, 183.84, 63.546};
123 Float_t zniwcu[3] ={28., 74., 29};
124 Float_t wniwcu[3] ={0.015,0.95,0.035};
f19077cf 125// Poly Concrete
126// H Li F C Al Si Ca Pb O
127 Float_t aPolyCc[9] = {1. , 6.941, 18.998, 12.01, 26.98, 28.086, 40.078, 207.2, 15.999};
128 Float_t zPolyCc[9] = {1. , 3. , 9. , 6. , 13. , 14. , 20. , 82. , 8. };
129 Float_t wPolyCc[9] = {4.9, 1.2 , 1.3 , 1.1 , 0.15, 0.02 , 0.06 , 0.7, 1.1 };
130 Float_t wtot=0;
131 Int_t i=0;
132
133 for (i=0; i<9; i++) wtot+=wPolyCc[i];
134 for (i=0; i<9; i++) wPolyCc[i]/=wtot;
135
3f4d1718 136//
137// Insulation powder
9af0a493 138// Si O Ti Al
139 Float_t ains[4] ={28.0855, 15.9994, 47.867, 26.982};
140 Float_t zins[4] ={14., 8. , 22. , 13. };
141 Float_t wins[4] ={ 0.3019, 0.4887, 0.1914, 0.018};
3f4d1718 142//
fe4da5cc 143 Float_t epsil, stmin, tmaxfd, deemax, stemax;
144 //
145 // Carbon
f19077cf 146 AliMaterial( 6, "CARBON$ ", 12.01, 6., 1.75, 24.4, 49.9);
147 AliMaterial(26, "CARBON$ ", 12.01, 6., 1.75, 24.4, 49.9);
148 AliMaterial(46, "CARBON$ ", 12.01, 6., 1.75, 24.4, 49.9);
fe4da5cc 149 //
150 // Aluminum
3f4d1718 151 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
fe4da5cc 152 AliMaterial(29, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
153 AliMaterial(49, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
154 //
155 // Iron
156 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
157 AliMaterial(30, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
158 AliMaterial(50, "IRON$ ", 55.85, 26., 7.87, 1.76, 17.1);
159 //
9af0a493 160 // Copper
161 AliMaterial(11, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
162 AliMaterial(31, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
163 AliMaterial(51, "COPPER$ ", 63.55, 29., 8.96, 1.43, 15.1);
164 //
fe4da5cc 165 // Tungsten
166 AliMaterial(12, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
167 AliMaterial(32, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
168 AliMaterial(52, "TUNGSTEN$ ", 183.85, 74., 19.3, .35, 10.3);
169 //
3f4d1718 170 // Ni-W-Cu
171 AliMixture(21, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
172 AliMixture(41, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
173 AliMixture(61, "Ni-W-Cu$", aniwcu, zniwcu, 18.78, 3, wniwcu);
174 //
fe4da5cc 175 // Lead
176 AliMaterial(13, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
177 AliMaterial(33, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
178 AliMaterial(53, "LEAD$ ", 207.19, 82., 11.35, .56, 18.5);
179 //
180 // Air
002b3738 181 AliMixture(15, "AIR$ ", aAir, zAir, dAir, 4, wAir);
182 AliMixture(35, "AIR$ ", aAir, zAir, dAir, 4, wAir);
183 AliMixture(55, "AIR$ ", aAir, zAir, dAir, 4, wAir);
fe4da5cc 184 //
185 // Vacuum
186 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
187 AliMaterial(36, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
188 AliMaterial(56, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
189 //
190 // Concrete
191 AliMixture(17, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
192 AliMixture(37, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
193 AliMixture(57, "CONCRETE$", aconc, zconc, 2.35, 10, wconc);
194 //
195 // Poly CH2
196 AliMixture(18, "POLYETHYLEN$", apoly, zpoly, .95, -2, wpoly);
197 //
198 // After a call with ratios by number (negative number of elements),
199 // the ratio array is changed to the ratio by weight, so all successive
200 // calls with the same array must specify the number of elements as
201 // positive
202 //
203 AliMixture(38, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
204 AliMixture(58, "POLYETHYLEN$", apoly, zpoly, .95, 2, wpoly);
205 //
206 // stainless Steel
207 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
208 AliMixture(39, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
209 AliMixture(59, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
3f4d1718 210 //
211 // Insulation powder
9af0a493 212 AliMixture(14, "INSULATION$", ains, zins, 0.41, 4, wins);
213 AliMixture(34, "INSULATION$", ains, zins, 0.41, 4, wins);
214 AliMixture(54, "INSULATION$", ains, zins, 0.41, 4, wins);
f19077cf 215 // Polymere Concrete
216 AliMixture(20, "Poly Concrete$", aPolyCc, zPolyCc, 3.53, -9, wPolyCc);
217 AliMixture(40, "Poly Concrete$", aPolyCc, zPolyCc, 3.53, 9, wPolyCc);
218 AliMixture(60, "Poly Concrete$", aPolyCc, zPolyCc, 3.53, 9, wPolyCc);
3f4d1718 219
fe4da5cc 220 //
221 // ****************
222 // Defines tracking media parameters.
223 //
3f4d1718 224 epsil = .001; // Tracking precision,
225 stemax = -0.01; // Maximum displacement for multiple scat
226 tmaxfd = -20.; // Maximum angle due to field deflection
227 deemax = -.3; // Maximum fractional energy loss, DLS
fe4da5cc 228 stmin = -.8;
229 // ***************
230 //
231 // Carbon
b43eb0dc 232 AliMedium(6, "C_C0 ", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
233 AliMedium(26, "C_C1 ", 26, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
234 AliMedium(46, "C_C2 ", 46, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 235 //
236 // Aluminum
b43eb0dc 237 AliMedium(9, "ALU_C0 ", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
238 AliMedium(29, "ALU_C1 ", 29, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
239 AliMedium(49, "ALU_C2 ", 49, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 240 //
241 // Iron
b43eb0dc 242 AliMedium(10, "FE_C0 ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
243 AliMedium(30, "FE_C1 ", 30, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
244 AliMedium(50, "FE_C2 ", 50, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 245 //
9af0a493 246 // Copper
b43eb0dc 247 AliMedium(11, "Cu_C0 ", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
248 AliMedium(31, "Cu_C1 ", 31, 0, isxfld, sxmgmx, tmaxfd, -stemax, deemax, epsil, stmin);
249 AliMedium(51, "Cu_C2 ", 51, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
9af0a493 250 //
fe4da5cc 251 // Tungsten
b43eb0dc 252 AliMedium(12, "W_C0 ", 12, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
253 AliMedium(32, "W_C1 ", 32, 0, isxfld, sxmgmx, tmaxfd, -stemax, deemax, epsil, stmin);
254 AliMedium(52, "W_C2 ", 52, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
3f4d1718 255 // Ni/Tungsten
b43eb0dc 256 AliMedium(21, "Ni/W0 ", 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
257 AliMedium(41, "Ni/W1 ", 41, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
258 AliMedium(61, "Ni/W3 ", 61, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 259 //
260 // Lead
b43eb0dc 261 AliMedium(13, "PB_C0 ", 13, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
262 AliMedium(33, "PB_C1 ", 33, 0, isxfld, sxmgmx, tmaxfd, -stemax, deemax, epsil, stmin);
263 AliMedium(53, "PB_C2 ", 53, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 264 //
3f4d1718 265 // Insulation Powder
b43eb0dc 266 AliMedium(14, "INS_C0 ", 14, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
267 AliMedium(34, "INS_C1 ", 34, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
268 AliMedium(54, "INS_C2 ", 54, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
3f4d1718 269 //
fe4da5cc 270 // Air
b43eb0dc 271 AliMedium(15, "AIR_C0 ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
272 AliMedium(35, "AIR_C1 ", 35, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
273 AliMedium(55, "AIR_C2 ", 55, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 274 //
275 // Vacuum
b43eb0dc 276 AliMedium(16, "VA_C0 ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
277 AliMedium(36, "VA_C1 ", 36, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
278 AliMedium(56, "VA_C2 ", 56, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 279 //
280 // Concrete
b43eb0dc 281 AliMedium(17, "CC_C0 ", 17, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
282 AliMedium(37, "CC_C1 ", 37, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
283 AliMedium(57, "CC_C2 ", 57, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 284 //
285 // Polyethilene
b43eb0dc 286 AliMedium(18, "CH2_C0 ", 18, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
287 AliMedium(38, "CH2_C1 ", 38, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
288 AliMedium(58, "CH2_C2 ", 58, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 289 //
290 // Steel
b43eb0dc 291 AliMedium(19, "ST_C0 ", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
292 AliMedium(39, "ST_C1 ", 39, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
293 AliMedium(59, "ST_C3 ", 59, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
f19077cf 294 //
295 // Polymer Concrete
296 AliMedium(20, "PCc_C0 ", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
297 AliMedium(40, "PCc_C1 ", 40, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
298 AliMedium(60, "PCc_C3 ", 60, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 299}
300
301//_____________________________________________________________________________
302void AliABSO::Init()
303{
304 //
305 // Initialisation of the muon absorber after it has been built
306 Int_t i;
307 //
308 printf("\n");
309 for(i=0;i<35;i++) printf("*");
310 printf(" ABSO_INIT ");
311 for(i=0;i<35;i++) printf("*");
312 printf("\n");
313 //
314 for(i=0;i<80;i++) printf("*");
315 printf("\n");
316}
317
eeacf08b 318Int_t AliABSO::GetMatId(Int_t imat) const
f19077cf 319{
320// Get geant material number
321 Int_t kmat=(*fIdmate)[imat];
322 return kmat;
323}