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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// Muon ABSOrber //
21// This class contains the description of the muon absorber geometry //
22// //
23//Begin_Html
24/*
25<img src="picts/AliABSOClass.gif">
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 <TGeoGlobalMagField.h>
40#include <TArrayI.h>
41
42#include "AliABSO.h"
43#include "AliRun.h"
44#include "AliMagF.h"
45#include "AliConst.h"
46
47ClassImp(AliABSO)
48
49//_____________________________________________________________________________
50AliABSO::AliABSO()
51{
52 //
53 // Default constructor
54 //
55 for (Int_t i = 0; i < 2; i++)
56 {
57 fNLayers[i] = 0;
58 for (Int_t j = 0; j < 15; j++)
59 {
60 fZLayers[i][j] = 0.;
61 fMLayers[i][j] = 0;
62 }
63 }
64}
65
66//_____________________________________________________________________________
67AliABSO::AliABSO(const char *name, const char *title)
68 : AliModule(name,title)
69{
70 //
71 // Standard constructor
72 //
73 for (Int_t i = 0; i < 2; i++)
74 {
75 fNLayers[i] = 0;
76 for (Int_t j = 0; j < 15; j++)
77 {
78 fZLayers[i][j] = 0.;
79 fMLayers[i][j] = 0;
80 }
81 }
82}
83
84//_____________________________________________________________________________
85void AliABSO::CreateGeometry()
86{
87 //
88 // Creation of the geometry of the muon absorber
89 //
90}
91
92//_____________________________________________________________________________
93void AliABSO::CreateMaterials()
94{
95 //
96 // Define materials for muon absorber
97 //
98 Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
99 Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
100//
101// Air
102//
103 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
104 Float_t zAir[4]={6.,7.,8.,18.};
105 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
106 Float_t dAir = 1.20479E-3;
107 Float_t dAir1 = 1.20479E-10;
108//
109// Polyethylene
110//
111 Float_t apoly[2] = { 12.01,1. };
112 Float_t zpoly[2] = { 6.,1. };
113 Float_t wpoly[2] = { .33,.67 };
114//
115// Concrete
116//
117 Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,28.086,39.1,40.08,55.85 };
118 Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
119 Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872, .337021,.013,.044,.014 };
120//
121// Steel
122//
123 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
124 Float_t zsteel[4] = { 26.,24.,28.,14. };
125 Float_t wsteel[4] = { .715,.18,.1,.005 };
126//
127// Ni-Cu-W alloy
128//
129 Float_t aniwcu[3] ={58.6934, 183.84, 63.546};
130 Float_t zniwcu[3] ={28., 74., 29};
131 Float_t wniwcu[3] ={0.015,0.95,0.035};
132//
133// Poly Concrete
134// H Li F C Al Si Ca Pb O
135 Float_t aPolyCc[9] = {1. , 6.941, 18.998, 12.01, 26.98, 28.086, 40.078, 207.2, 15.999};
136 Float_t zPolyCc[9] = {1. , 3. , 9. , 6. , 13. , 14. , 20. , 82. , 8. };
137 Float_t wPolyCc[9] = {4.9, 1.2 , 1.3 , 1.1 , 0.15, 0.02 , 0.06 , 0.7, 1.1 };
138 Float_t wtot=0;
139 Int_t i=0;
140
141 for (i=0; i<9; i++) wtot+=wPolyCc[i];
142 for (i=0; i<9; i++) wPolyCc[i]/=wtot;
143
144//
145// Insulation powder
146// Si O Ti Al
147 Float_t ains[4] ={28.0855, 15.9994, 47.867, 26.982};
148 Float_t zins[4] ={14., 8. , 22. , 13. };
149 Float_t wins[4] ={ 0.3019, 0.4887, 0.1914, 0.018};
150
151//
152 Float_t epsil, stmin, tmaxfd, deemax, stemax;
153 //
154 // Carbon
155 AliMaterial( 6, "CARBON0$ ", 12.01, 6., 1.75, 24.4, 49.9);
156 AliMaterial(26, "CARBON1$ ", 12.01, 6., 1.75, 24.4, 49.9);
157 AliMaterial(46, "CARBON2$ ", 12.01, 6., 1.75, 24.4, 49.9);
158 //
159 // Magnesium
160 AliMaterial( 7, "MAGNESIUM$ ", 24.31, 12., 1.74, 25.3, 46.0);
161 //
162 // Aluminum
163 AliMaterial(9, "ALUMINIUM0$", 26.98, 13., 2.7, 8.9, 37.2);
164 AliMaterial(29, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2);
165 AliMaterial(49, "ALUMINIUM2$", 26.98, 13., 2.7, 8.9, 37.2);
166 //
167 // Iron
168 AliMaterial(10, "IRON0$ ", 55.85, 26., 7.87, 1.76, 17.1);
169 AliMaterial(30, "IRON1$ ", 55.85, 26., 7.87, 1.76, 17.1);
170 AliMaterial(50, "IRON2$ ", 55.85, 26., 7.87, 1.76, 17.1);
171 //
172 // Copper
173 AliMaterial(11, "COPPER0$ ", 63.55, 29., 8.96, 1.43, 15.1);
174 AliMaterial(31, "COPPER1$ ", 63.55, 29., 8.96, 1.43, 15.1);
175 AliMaterial(51, "COPPER2$ ", 63.55, 29., 8.96, 1.43, 15.1);
176 //
177 // Tungsten
178 AliMaterial(12, "TUNGSTEN0$ ", 183.85, 74., 19.3, .35, 10.3);
179 AliMaterial(32, "TUNGSTEN1$ ", 183.85, 74., 19.3, .35, 10.3);
180 AliMaterial(52, "TUNGSTEN2$ ", 183.85, 74., 19.3, .35, 10.3);
181 //
182 // Ni-W-Cu
183 AliMixture(21, "Ni-W-Cu0$", aniwcu, zniwcu, 18.78, 3, wniwcu);
184 AliMixture(41, "Ni-W-Cu1$", aniwcu, zniwcu, 18.78, 3, wniwcu);
185 AliMixture(61, "Ni-W-Cu2$", aniwcu, zniwcu, 18.78, 3, wniwcu);
186 //
187 // Lead
188 AliMaterial(13, "LEAD0$ ", 207.19, 82., 11.35, .56, 18.5);
189 AliMaterial(33, "LEAD1$ ", 207.19, 82., 11.35, .56, 18.5);
190 AliMaterial(53, "LEAD2$ ", 207.19, 82., 11.35, .56, 18.5);
191 //
192 // Air
193 AliMixture(15, "AIR0$ ", aAir, zAir, dAir, 4, wAir);
194 AliMixture(35, "AIR1$ ", aAir, zAir, dAir, 4, wAir);
195 AliMixture(55, "AIR2$ ", aAir, zAir, dAir, 4, wAir);
196 //
197 // Vacuum
198 AliMixture(16, "VACUUM0$ ", aAir, zAir, dAir1, 4, wAir);
199 AliMixture(36, "VACUUM1$ ", aAir, zAir, dAir1, 4, wAir);
200 AliMixture(56, "VACUUM2$ ", aAir, zAir, dAir1, 4, wAir);
201 //
202 // Concrete
203 AliMixture(17, "CONCRETE0$", aconc, zconc, 2.35, 10, wconc);
204 AliMixture(37, "CONCRETE1$", aconc, zconc, 2.35, 10, wconc);
205 AliMixture(57, "CONCRETE2$", aconc, zconc, 2.35, 10, wconc);
206 //
207 // Poly CH2
208 AliMixture(18, "POLYETHYLEN0$", apoly, zpoly, .95, -2, wpoly);
209 //
210 // After a call with ratios by number (negative number of elements),
211 // the ratio array is changed to the ratio by weight, so all successive
212 // calls with the same array must specify the number of elements as
213 // positive
214 //
215 AliMixture(38, "POLYETHYLEN1$", apoly, zpoly, .95, 2, wpoly);
216 AliMixture(58, "POLYETHYLEN2$", apoly, zpoly, .95, 2, wpoly);
217 //
218 // stainless Steel
219 AliMixture(19, "STAINLESS STEEL0$", asteel, zsteel, 7.88, 4, wsteel);
220 AliMixture(39, "STAINLESS STEEL1$", asteel, zsteel, 7.88, 4, wsteel);
221 AliMixture(59, "STAINLESS STEEL2$", asteel, zsteel, 7.88, 4, wsteel);
222 //
223 // Insulation powder
224 AliMixture(14, "INSULATION0$", ains, zins, 0.41, 4, wins);
225 AliMixture(34, "INSULATION1$", ains, zins, 0.41, 4, wins);
226 AliMixture(54, "INSULATION2$", ains, zins, 0.41, 4, wins);
227 // Polymere Concrete
228 AliMixture(20, "Poly Concrete0$", aPolyCc, zPolyCc, 3.53, -9, wPolyCc);
229 AliMixture(40, "Poly Concrete1$", aPolyCc, zPolyCc, 3.53, 9, wPolyCc);
230 AliMixture(60, "Poly Concrete2$", aPolyCc, zPolyCc, 3.53, 9, wPolyCc);
231
232 //
233 // ****************
234 // Defines tracking media parameters.
235 //
236 epsil = .001; // Tracking precision,
237 stemax = -0.01; // Maximum displacement for multiple scat
238 tmaxfd = -20.; // Maximum angle due to field deflection
239 deemax = -.3; // Maximum fractional energy loss, DLS
240 stmin = -.8;
241 // ***************
242 //
243 // Carbon
244 AliMedium(6, "C_C0 ", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
245 AliMedium(26, "C_C1 ", 26, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
246 AliMedium(46, "C_C2 ", 46, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
247 //
248 // Aluminum
249 AliMedium(9, "ALU_C0 ", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
250 AliMedium(29, "ALU_C1 ", 29, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
251 AliMedium(49, "ALU_C2 ", 49, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
252 //
253 // Magnesium
254 AliMedium(7, "MG_C0 ", 7, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
255 //
256 // Iron
257 AliMedium(10, "FE_C0 ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
258 AliMedium(30, "FE_C1 ", 30, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
259 AliMedium(50, "FE_C2 ", 50, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
260 //
261 // Copper
262 AliMedium(11, "Cu_C0 ", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
263 AliMedium(31, "Cu_C1 ", 31, 0, isxfld, sxmgmx, tmaxfd, -stemax, deemax, epsil, stmin);
264 AliMedium(51, "Cu_C2 ", 51, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
265 //
266 // Tungsten
267 AliMedium(12, "W_C0 ", 12, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
268 AliMedium(32, "W_C1 ", 32, 0, isxfld, sxmgmx, tmaxfd, -stemax, deemax, epsil, stmin);
269 AliMedium(52, "W_C2 ", 52, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
270 //
271 // Ni/Tungsten
272 AliMedium(21, "Ni/W0 ", 21, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
273 AliMedium(41, "Ni/W1 ", 41, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
274 AliMedium(61, "Ni/W3 ", 61, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
275 //
276 // Lead
277 AliMedium(13, "PB_C0 ", 13, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
278 AliMedium(33, "PB_C1 ", 33, 0, isxfld, sxmgmx, tmaxfd, -stemax, deemax, epsil, stmin);
279 AliMedium(53, "PB_C2 ", 53, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
280 //
281 // Insulation Powder
282 AliMedium(14, "INS_C0 ", 14, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
283 AliMedium(34, "INS_C1 ", 34, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
284 AliMedium(54, "INS_C2 ", 54, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
285 //
286 // Air
287 AliMedium(15, "AIR_C0 ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
288 AliMedium(35, "AIR_C1 ", 35, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
289 AliMedium(55, "AIR_C2 ", 55, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
290 //
291 // Vacuum
292 AliMedium(16, "VA_C0 ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
293 AliMedium(36, "VA_C1 ", 36, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
294 AliMedium(56, "VA_C2 ", 56, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
295 //
296 // Concrete
297 AliMedium(17, "CC_C0 ", 17, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
298 AliMedium(37, "CC_C1 ", 37, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
299 AliMedium(57, "CC_C2 ", 57, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
300 //
301 // Polyethilene
302 AliMedium(18, "CH2_C0 ", 18, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
303 AliMedium(38, "CH2_C1 ", 38, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
304 AliMedium(58, "CH2_C2 ", 58, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
305 //
306 // Steel
307 AliMedium(19, "ST_C0 ", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
308 AliMedium(39, "ST_C1 ", 39, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
309 AliMedium(59, "ST_C3 ", 59, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
310 //
311 // Polymer Concrete
312 AliMedium(20, "PCc_C0 ", 20, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
313 AliMedium(40, "PCc_C1 ", 40, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
314 AliMedium(60, "PCc_C3 ", 60, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
315}
316
317//_____________________________________________________________________________
318void AliABSO::Init()
319{
320 //
321 // Initialisation of the muon absorber after it has been built
322 Int_t i;
323 //
324 printf("\n");
325 for(i=0;i<35;i++) printf("*");
326 printf(" ABSO_INIT ");
327 for(i=0;i<35;i++) printf("*");
328 printf("\n");
329 //
330 for(i=0;i<80;i++) printf("*");
331 printf("\n");
332}
333
334Int_t AliABSO::GetMatId(Int_t imat) const
335{
336// Get geant material number
337 Int_t kmat=(*fIdmate)[imat];
338 return kmat;
339}