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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// //
eeacf08b 20// Beam pipe class. Test version //
fe4da5cc 21// //
22//Begin_Html
23/*
1439f98e 24<img src="picts/AliPIPEClass.gif">
fe4da5cc 25*/
26//End_Html
27// //
28///////////////////////////////////////////////////////////////////////////////
29
30#include "AliPIPEv1.h"
31#include "AliRun.h"
94de3818 32#include "AliMagF.h"
fe4da5cc 33
34ClassImp(AliPIPEv1)
35
36//_____________________________________________________________________________
b8032157 37AliPIPEv1::AliPIPEv1()
fe4da5cc 38{
39 //
40 // Default constructor for beam pipe
41 //
42}
43
44//_____________________________________________________________________________
45AliPIPEv1::AliPIPEv1(const char *name, const char *title)
46 : AliPIPE(name,title)
47{
48 //
49 // Standard constructor for beam pipe
50 //
51}
52
53//_____________________________________________________________________________
54void AliPIPEv1::CreateGeometry()
55{
56 //
57 // Create Beam Pipe geometry
58 //
59 //Begin_Html
60 /*
1439f98e 61 <img src="picts/AliPIPE.gif">
fe4da5cc 62 */
63 //End_Html
64 //Begin_Html
65 /*
1439f98e 66 <img src="picts/AliPIPETree.gif">
fe4da5cc 67 */
68 //End_Html
69
b43eb0dc 70 Float_t tpar[3], dzmo, zpos, absorberDistance, absorberEnd;
fe4da5cc 71 Float_t r2, dr;
72
b43eb0dc 73 const Double_t kZFlange = 150;
fe4da5cc 74
ad51aeb0 75 Int_t *idtmed = fIdtmed->GetArray()-1999;
fe4da5cc 76
77
b43eb0dc 78 absorberDistance = 90.; // DEFINES DRIFT LENGTH
fe4da5cc 79 //z_nose = 102.;
80 //z_cone = 285.;
81 //theta1 = 24.; // 1. angle defining the front absorber
82 //theta2 = 5.; // 2. angle defining the front absorbe
83 //acc_max = 9.; // ANGLE POLAIRE MAXIMUM
84 //acc_min = 2.; // ANGLE POLAIRE MINIMUM DE DETECTION
b43eb0dc 85 absorberEnd = 503.;
fe4da5cc 86 //d_steel = 1.; // THICKNESS OF STEEL SUPPORT
87 //d_poly = 7.5;
88 //d_pb = 2.5;
89 //abs_cc = 315.; // DEFINES LENGTH OF CARBON
90 //abs_c = 358.;
91 //abs_s = 150.; // DEFINES W-SHIELD LENGTH
92 //abs_n = 80.; // START OF NOSE
93 //r_abs = 4.;
94 //r_pb = .1;
95 //epsilon = .01;
96 //theta_r = 3.;
97 //d_rear = 35.;
98 //theta_open = .75;
99
100 //z_l3 = 700.;
101 //zmag_in = 725.;
102 //zmag_out = 1225.;
103 //zfil_in = 1471.;
104 //zfil_out = 1591.;
105 //zcon_in = 1900.;
106 //zcon_out = 2e3;
107 //zcone_e = 859.0875;
108 //spec_l = 1800.;
109 //zplug_in = 1780.;
110 //zplug_out = 1900.;
111
112 // Chamber position
113 // CZ1=515.5
114 //cz1 = 511.;
115 //cz2 = 686.;
116 //cz3 = 971.;
117 //cz4 = 1245.;
118 //cz5 = 1445.;
119 //cz6 = 1610.;
120 //cz7 = 1710.;
121
122
123 // the mother of all beam pipes
124
125 tpar[0] = 0.;
126 tpar[1] = 3.;
b43eb0dc 127 tpar[2] = (absorberDistance + 700.) / 2.;
128 dzmo = tpar[2] - absorberDistance;
cfce8870 129 gMC->Gsvolu("QQMO", "TUBE", idtmed[2015], tpar, 3);
130 gMC->Gspos("QQMO", 1, "ALIC", 0., 0., -dzmo, 0, "ONLY");
fe4da5cc 131
132 // BEAM PIPE IN DRIFT SPACE
133
b43eb0dc 134 // -30-kZFlange
fe4da5cc 135 tpar[0] = 0.;
136 tpar[1] = 3.;
137 tpar[2] = 30;
cfce8870 138 gMC->Gsvolu("QDT1", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 139
140 tpar[0] = 2.9;
cfce8870 141 gMC->Gsvolu("QTB1", "TUBE", idtmed[2004], tpar, 3);
142 gMC->Gspos("QTB1", 1, "QDT1", 0., 0., 0., 0, "ONLY");
143 gMC->Gspos("QDT1", 1, "QQMO", 0., 0., dzmo, 0, "ONLY");
fe4da5cc 144
145
146 // 30-90
147 tpar[0] = 0.;
148 tpar[1] = 3.;
149 tpar[2] = 30.;
cfce8870 150 gMC->Gsvolu("QDT2", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 151
152 tpar[0] = 2.9;
cfce8870 153 gMC->Gsvolu("QTB2", "TUBE", idtmed[2004], tpar, 3);
154 gMC->Gspos("QTB2", 1, "QDT2", 0., 0., 0., 0, "ONLY");
155 gMC->Gspos("QDT2", 1, "QQMO", 0., 0., dzmo, 0, "ONLY");
fe4da5cc 156
157 // beam pipe outside absorber on the left side
158
159
160
b43eb0dc 161 // -30 - kZFlange
fe4da5cc 162 tpar[0] = 0.;
163 tpar[1] = 3.;
b43eb0dc 164 tpar[2] = (kZFlange - 30)/2;
cfce8870 165 gMC->Gsvolu("QDT5", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 166
167 tpar[0] = 2.9;
168 zpos = -30. - tpar[2] + dzmo;
cfce8870 169 gMC->Gsvolu("QTB5", "TUBE", idtmed[2004], tpar, 3);
170 gMC->Gspos("QTB5", 1, "QDT5", 0., 0., 0., 0, "ONLY");
171 gMC->Gspos("QDT5", 1, "QQMO", 0., 0., zpos, 0, "ONLY");
fe4da5cc 172
173 // STRAIGHT STEEL PIECE
174
b43eb0dc 175 zpos = -kZFlange;
fe4da5cc 176 r2 = 2.9;
177 dr = .015;
178 tpar[0] = 0.;
179 tpar[1] = r2 + dr;
180 tpar[2] = (zpos + 700.) / 2.;
cfce8870 181 gMC->Gsvolu("QDT7", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 182 tpar[0] = r2;
cfce8870 183 gMC->Gsvolu("QTB7", "TUBE", idtmed[2018], tpar, 3);
184 gMC->Gspos("QTB7", 1, "QDT7", 0., 0., 0., 0, "ONLY");
fe4da5cc 185 zpos = zpos - tpar[2] + dzmo;
cfce8870 186 gMC->Gspos("QDT7", 1, "QQMO", 0., 0., zpos, 0, "ONLY");
fe4da5cc 187
188 // flange dn 63
189
190 tpar[0] = 3.;
191 tpar[1] = 5.7;
192 tpar[2] = 2.;
cfce8870 193 gMC->Gsvolu("QN63", "TUBE", idtmed[2018], tpar, 3);
b43eb0dc 194 zpos = tpar[2] - kZFlange;
cfce8870 195 gMC->Gspos("QN63", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
fe4da5cc 196
197
198 // Replace Absorber or Shield by Beam-Pipe
199 // in case they are not selected
200
b8032157 201 if (gAlice->GetModule("ABSO") == 0) {
fe4da5cc 202
b43eb0dc 203 gMC->Gspos("QN63", 2, "ALIC", 0., 0., kZFlange, 0, "ONLY");
fe4da5cc 204 r2 = 2.9;
205 dr = .1;
206 tpar[0] = 0.;
207 tpar[1] = r2 + dr;
b43eb0dc 208 tpar[2] = (kZFlange - absorberDistance) / 2.;
cfce8870 209 gMC->Gsvolu("QDT8", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 210 tpar[0] = r2;
cfce8870 211 gMC->Gsvolu("QTB8", "TUBE", idtmed[2004], tpar, 3);
212 gMC->Gspos("QTB8", 1, "QDT8", 0., 0., 0., 0, "ONLY");
b43eb0dc 213 zpos = absorberDistance + tpar[2];
cfce8870 214 gMC->Gspos("QDT8", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
fe4da5cc 215 dr = .015;
216 tpar[0] = 0.;
217 tpar[1] = r2 + dr;
b43eb0dc 218 tpar[2] = (absorberEnd - kZFlange) / 2.;
cfce8870 219 gMC->Gsvolu("QDTS", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 220 tpar[0] = r2;
cfce8870 221 gMC->Gsvolu("QTBS", "TUBE", idtmed[2018], tpar, 3);
222 gMC->Gspos("QTBS", 1, "QDTS", 0., 0., 0., 0, "ONLY");
b43eb0dc 223 zpos = tpar[2] + kZFlange;
cfce8870 224 gMC->Gspos("QDTS", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
fe4da5cc 225 }
b8032157 226 if (gAlice->GetModule("SHIL") == 0) {
fe4da5cc 227 r2 = 2.9;
228 dr = .015;
229 tpar[0] = 0.;
230 tpar[1] = r2 + dr;
b43eb0dc 231 tpar[2] = (700. - absorberEnd) / 2.;
cfce8870 232 gMC->Gsvolu("QDT9", "TUBE", idtmed[2015], tpar, 3);
fe4da5cc 233 tpar[0] = r2;
cfce8870 234 gMC->Gsvolu("QTB9", "TUBE", idtmed[2018], tpar, 3);
235 gMC->Gspos("QTB9", 1, "QDT9", 0., 0., 0., 0, "ONLY");
b43eb0dc 236 zpos = absorberEnd + tpar[2];
cfce8870 237 gMC->Gspos("QDT9", 1, "ALIC", 0., 0., zpos, 0, "ONLY");
fe4da5cc 238 }
239}
240
241//_____________________________________________________________________________
eeacf08b 242void AliPIPEv1::DrawModule() const
fe4da5cc 243{
244 //
245 // Draw a shaded view of the Beam Pipe
246 //
247
fe4da5cc 248 // Set everything unseen
cfce8870 249 gMC->Gsatt("*", "seen", -1);
fe4da5cc 250 //
251 // Set ALIC mother transparent
cfce8870 252 gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc 253 //
254 // Set the volumes visible
cfce8870 255 gMC->Gsatt("QQMO","seen",1);
256 gMC->Gsatt("QDT1","seen",1);
257 gMC->Gsatt("QTB1","seen",1);
258 gMC->Gsatt("QDT2","seen",1);
259 gMC->Gsatt("QTB2","seen",1);
260 gMC->Gsatt("QDT5","seen",1);
261 gMC->Gsatt("QTB5","seen",1);
262 gMC->Gsatt("QDT7","seen",1);
263 gMC->Gsatt("QTB7","seen",1);
264 gMC->Gsatt("QN63","seen",1);
fe4da5cc 265 //
cfce8870 266 gMC->Gdopt("hide", "on");
267 gMC->Gdopt("shad", "on");
268 gMC->Gsatt("*", "fill", 7);
269 gMC->SetClipBox(".");
270 gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
271 gMC->DefaultRange();
272 gMC->Gdraw("alic", 40, 30, 0, 3, 5, .04, .04);
273 gMC->Gdhead(1111, "Beam Pipe");
274 gMC->Gdman(16, 6, "MAN");
275 gMC->Gdopt("hide","off");
fe4da5cc 276}
277
278//_____________________________________________________________________________
279void AliPIPEv1::CreateMaterials()
280{
281 //
282 // Create materials for beam pipe
283 //
284
b43eb0dc 285 Int_t isxfld = gAlice->Field()->Integ();
286 Float_t sxmgmx = gAlice->Field()->Max();
fe4da5cc 287
288 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
289 Float_t zsteel[4] = { 26.,24.,28.,14. };
290 Float_t wsteel[4] = { .715,.18,.1,.005 };
291
292 Float_t epsil, stmin, tmaxfd, deemax, stemax;
293
294 // STEEL
295
296
297 // --- Define the various materials for GEANT ---
298 AliMaterial(5, "BERILLIUM$", 9.01, 4., 1.848, 35.3, 36.7);
299 AliMaterial(16, "VACUUM$ ", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
300 AliMaterial(15, "AIR$ ", 14.61, 7.3, .001205, 30423.24, 67500);
301 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
302
303 // ****************
304 // Defines tracking media parameters.
305 // Les valeurs sont commentees pour laisser le defaut
306 // a GEANT (version 3-21, page CONS200), f.m.
307 epsil = .001; // Tracking precision,
308 stemax = -1.; // Maximum displacement for multiple scat
309 tmaxfd = -20.; // Maximum angle due to field deflection
310 deemax = -.3; // Maximum fractional energy loss, DLS
311 stmin = -.8;
312
313 // Air
314
b43eb0dc 315 AliMedium(15, "AIR_L3_US", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 316
317 // Beryllium
318
b43eb0dc 319 AliMedium(5, "BE_L3_US", 5, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 320
321 // Vacuum
322
b43eb0dc 323 AliMedium(16, "VA_L3_US", 16, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 324
325 // Steel
326
b43eb0dc 327 AliMedium(19, "ST_L3_US", 19, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
fe4da5cc 328}
329