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 1.6 1999/09/29 09:24:30 fca
19 Introduction of the Copyright and cvs Log
23 ///////////////////////////////////////////////////////////////////////////////
25 // Magnetic Dipole version 1 //
29 <img src="picts/AliDIPOv1Class.gif">
32 <font size=+2 color=red>
33 <p>The responsible person for this module is
34 <a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
41 ///////////////////////////////////////////////////////////////////////////////
43 #include "AliDIPOv1.h"
48 //_____________________________________________________________________________
49 AliDIPOv1::AliDIPOv1()
52 // Default constructor for the magnetic dipole version 1
56 //_____________________________________________________________________________
57 AliDIPOv1::AliDIPOv1(const char *name, const char *title)
61 // Standard constructor for magnetic dipole version 1
68 //_____________________________________________________________________________
69 void AliDIPOv1::CreateGeometry()
72 // Creation of the geometry of the magnetic DIPOLE version 1
76 <img src="picts/AliDIPOv1Tree.gif">
81 <img src="picts/AliDIPOv1.gif">
87 Int_t *idtmed = fIdtmed->GetArray()-1799;
89 //abs_d = 90.; // DEFINES DRIFT LENGTH
92 //theta1 = 24.; // 1. angle defining the front absorber
93 //theta2 = 5.; // 2. angle defining the front absorbe
94 //acc_max = 9.; // ANGLE POLAIRE MAXIMUM
95 //acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION
97 //d_steel = 1.; // THICKNESS OF STEEL SUPPORT
100 //abs_cc = 315.; // DEFINES LENGTH OF CARBON
102 //abs_s = 150.; // DEFINES W-SHIELD LENGTH
103 //abs_n = 80.; // START OF NOSE
118 //zcone_e = 859.0875;
138 gMC->Gsvolu("DDIP", "TUBE", idtmed[1801], par, 3);
147 gMC->Gsvolu("DIPC", "CONE", idtmed[1810], par, 5);
148 gMC->Gspos("DIPC", 1, "DDIP", 0., 0., 0., 0, "ONLY");
154 gMC->Gsvolu("DIIC", "CONE", idtmed[1807], par, 5);
155 gMC->Gspos("DIIC", 1, "DDIP", 0., 0., 0., 0, "ONLY");
164 gMC->Gsvolu("DIPY", "CONE", idtmed[1834], par, 5);
165 gMC->Gspos("DIPY", 1, "DDIP", 0., 0., 0., 0, "ONLY");
166 gMC->Gspos("DDIP", 1, "ALIC", 0., 0., 725.+250, 0, "ONLY");
169 //_____________________________________________________________________________
170 void AliDIPOv1::DrawModule()
173 // Draw a shaded view of the muon absorber
176 // Set everything unseen
177 gMC->Gsatt("*", "seen", -1);
179 // Set ALIC mother transparent
180 gMC->Gsatt("ALIC","SEEN",0);
182 // Set the volumes visible
183 gMC->Gsatt("DDIP","seen",1);
184 gMC->Gsatt("DIPC","seen",1);
185 gMC->Gsatt("DIIC","seen",1);
186 gMC->Gsatt("DIPY","seen",1);
188 gMC->Gdopt("hide", "on");
189 gMC->Gdopt("shad", "on");
190 gMC->Gsatt("*", "fill", 7);
191 gMC->SetClipBox(".");
192 gMC->SetClipBox(".");
194 gMC->Gdraw("alic", 30, 30, 0, 17, 13.5, .019, .019);
195 gMC->Gdhead(1111, "Magnetic Dipole Version 1");
196 gMC->Gdman(16, 4, "MAN");
199 //_____________________________________________________________________________
200 void AliDIPOv1::CreateMaterials()
203 // Create Materials for Dipole Magnet version 1
206 Int_t isxfld = gAlice->Field()->Integ();
207 Float_t sxmgmx = gAlice->Field()->Max();
209 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
210 Float_t zsteel[4] = { 26.,24.,28.,14. };
211 Float_t wsteel[4] = { .715,.18,.1,.005 };
212 Float_t epsil, stmin, deemax, tmaxfd, stemax;
217 // --- Define the various materials for GEANT ---
218 AliMaterial(9, "ALUMINIUM$", 26.98, 13., 2.7, 8.9, 37.2);
219 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
220 AliMaterial(10, "IRON$ ", 55.85, 26., 7.87, 0, 17.1);
221 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
222 AliMixture(24, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
225 // Defines tracking media parameters.
226 // Les valeurs sont commentees pour laisser le defaut
227 // a GEANT (version 3-21, page CONS200), f.m.
228 epsil = .001; // Tracking precision,
229 stemax = -1.; // Maximum displacement for multiple scat
230 tmaxfd = -20.; // Maximum angle due to field deflection
231 deemax = -.3; // Maximum fractional energy loss, DLS
237 AliMedium(1, "AIR_DI_US ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
238 AliMedium(2, "AIR_DI_US ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
239 AliMedium(3, "AIR_L3_US ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
243 AliMedium(8, "ALU_DI_US ", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
244 AliMedium(11, "ALU_DI_SH ", 9, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
248 AliMedium(31, "FE_NF_US ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
249 AliMedium(32, "FE_DI_US ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
250 AliMedium(33, "FE_L3_US ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
251 AliMedium(34, "FE_NF_SH ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
252 AliMedium(35, "FE_DI_SH ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
253 AliMedium(36, "FE_L3_SH ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
257 AliMedium(37, "VA_NF_US ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
258 AliMedium(38, "VA_DI_US ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
259 AliMedium(39, "VA_L3_US ", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
263 AliMedium(75, "ST_L3_US ", 24, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);