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[u/mrichter/AliRoot.git] / STRUCT / AliABSOv0.cxx
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43d014f0 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/*
17$Log$
381ec9af 18Revision 1.7 2000/10/02 21:28:15 fca
19Removal of useless dependecies via forward declarations
20
94de3818 21Revision 1.6 2000/06/15 09:40:31 morsch
22Obsolete typedef keyword removed
23
56f14ac2 24Revision 1.5 2000/06/12 19:39:01 morsch
25New structure of beam pipe and heating jacket.
26
b2ef5f06 27Revision 1.4 2000/04/03 08:13:40 fca
28Introduce extra scope for non ANSI compliant C++ compilers
29
74c0d076 30Revision 1.3 2000/01/18 17:49:56 morsch
31Serious overlap of ABSM with shield corrected
32Small error in ARPB parameters corrected
33
85d164ab 34Revision 1.2 2000/01/13 11:23:59 morsch
35Last layer of Pb outer angle corrected
36
54fba644 37Revision 1.1 2000/01/12 15:39:30 morsch
b2ef5f06 38Standard version of ABSO
54fba644 39
43d014f0 40*/
41
42///////////////////////////////////////////////////////////////////////////////
43// //
44// Muon ABSOrber //
45// This class contains the description of the muon absorber geometry //
46// //
47//Begin_Html
48/*
49<img src="picts/AliABSOClass.gif">
50</pre>
51<br clear=left>
52<font size=+2 color=red>
53<p>The responsible person for this module is
54<a href="mailto:andreas.morsch@cern.ch">Andreas Morsch</a>.
55</font>
56<pre>
57*/
58//End_Html
59// //
60// //
61///////////////////////////////////////////////////////////////////////////////
62
63#include "AliABSOv0.h"
64#include "AliRun.h"
94de3818 65#include "AliMC.h"
43d014f0 66#include "AliConst.h"
b2ef5f06 67
43d014f0 68ClassImp(AliABSOv0)
69
70//_____________________________________________________________________________
71AliABSOv0::AliABSOv0()
72{
73 //
74 // Default constructor
75 //
76}
77
78//_____________________________________________________________________________
79AliABSOv0::AliABSOv0(const char *name, const char *title)
80 : AliABSO(name,title)
81{
82 //
83 // Standard constructor
84 //
85 SetMarkerColor(7);
86 SetMarkerStyle(2);
87 SetMarkerSize(0.4);
88}
89
90//_____________________________________________________________________________
91void AliABSOv0::CreateGeometry()
92{
b2ef5f06 93 //
94 // Creation of the geometry of the muon absorber
95 //
96 //Begin_Html
97 /*
98 <img src="picts/AliABSOv0Tree.gif">
99 */
100 //End_Html
101 //Begin_Html
102 /*
103 <img src="picts/AliABSOv0.gif">
104 */
105 //End_Html
106
107 //
108 //
56f14ac2 109
110 enum {kC=1605, kAl=1608, kFe=1609, kCu=1610, kW=1611, kPb=1612,
b2ef5f06 111 kNiCuW=1620, kVacuum=1615, kAir=1614, kConcrete=1616,
381ec9af 112 kPolyCH2=1617, kSteel=1609, kInsulation=1613, kPolyCc=1619};
b2ef5f06 113
114 Int_t *idtmed = fIdtmed->GetArray()-1599;
43d014f0 115
b2ef5f06 116 Float_t par[24], cpar[5], cpar0[5], pcpar[12], tpar[3], tpar0[3];
117 Float_t dz;
b2ef5f06 118#include "ABSOSHILConst.h"
119#include "ABSOConst.h"
381ec9af 120//
121// Structure of Tracking Region
122//
123 Float_t dzFe = 25.;
124
125// 3 < theta < 9
126 fNLayers[0] = 5;
127 fMLayers[0][0] = kAir; fZLayers[0][0] = zAbsStart;
128 fMLayers[0][1] = kC; fZLayers[0][1] = zAbsCc;
129 fMLayers[0][2] = kConcrete; fZLayers[0][2] = zRear-dRear-dzFe;
130 fMLayers[0][3] = kFe; fZLayers[0][3] = zRear-dRear;
131 fMLayers[0][4] = kCu; fZLayers[0][4] = zRear;
132// 2 < theta < 3
133 fNLayers[1] = 5;
134 fMLayers[1][0] = fMLayers[0][0]; fZLayers[1][0] = fZLayers[0][0];
135 fMLayers[1][1] = fMLayers[0][1]; fZLayers[1][1] = fZLayers[0][1];
136 fMLayers[1][2] = fMLayers[0][2]; fZLayers[1][2] = fZLayers[0][2];
137 fMLayers[1][3] = fMLayers[0][3]; fZLayers[1][3] = fZLayers[0][3];
138 fMLayers[1][4] = kNiCuW; fZLayers[1][4] = fZLayers[0][4];
139//
140
b2ef5f06 141 Float_t dTube=0.1; // tube thickness
142 Float_t dInsu=0.5; // insulation thickness
143 Float_t dEnve=0.1; // protective envelope thickness
144 Float_t dFree=0.5; // clearance thickness
145
146
147// Mother volume and outer shielding: Pb
43d014f0 148 par[0] = 0.;
149 par[1] = 360.;
150 par[2] = 7.;
b2ef5f06 151
152 par[3] = -(zRear-zAbsStart)/2.;
153 par[4] = rAbs;
154 par[5] = zAbsStart * TMath::Tan(theta1);
43d014f0 155
b2ef5f06 156 par[6] = par[3]+(zNose-zAbsStart);
157 par[7] = rAbs;
158 par[8] = zNose * TMath::Tan(theta1);
43d014f0 159
b2ef5f06 160 par[9] = par[3]+(zConeTPC-zAbsStart);
161 par[10] = rAbs;
43d014f0 162 par[11] = par[8] + (par[9] - par[6]) * TMath::Tan(theta2);
163
b2ef5f06 164 par[12] = par[3]+(zOpen-zAbsStart);
165 par[13] = rAbs;
166 par[14] = par[11] + (par[12] - par[9]) * TMath::Tan(accMax);
43d014f0 167
b2ef5f06 168 par[15] = par[3]+(zRear-dRear-zAbsStart);
169 par[16] = rAbs + (par[15] - par[12]) * TMath::Tan(thetaOpen1) ;
170 par[17] = par[14] + (par[15] - par[12]) * TMath::Tan(accMax);
43d014f0 171
b2ef5f06 172 par[18] = par[3]+(zRear-dRear-zAbsStart);
173 par[19] = (zRear-dRear) * TMath::Tan(accMin);
174 par[20] = par[14] + (par[18] - par[12]) * TMath::Tan(accMax);
43d014f0 175
176 par[21] = -par[3];
b2ef5f06 177 par[22] = zRear* TMath::Tan(accMin);
178 par[23] = par[20] + (par[21] - par[18]) * TMath::Tan(accMax);
179 gMC->Gsvolu("ABSS", "PCON", idtmed[kPb], par, 24);
74c0d076 180 { // Begin local scope for i
b2ef5f06 181 for (Int_t i=4; i<18; i+=3) par[i] = 0;
74c0d076 182 } // End local scope for i
b2ef5f06 183 gMC->Gsvolu("ABSM", "PCON", idtmed[kVacuum+40], par, 24);
43d014f0 184 gMC->Gspos("ABSS", 1, "ABSM", 0., 0., 0., 0, "ONLY");
185
186//
187// Steel envelope
188//
b2ef5f06 189 par[4] = par[5] -dSteel;
190 par[7] = par[8] -dSteel;
191 par[10]= par[11]-dSteel;
192 par[13]= par[14]-dSteel;
193 par[16]= par[17]-dSteel;
194 par[19]= par[20]-dSteel;
195 par[22]= par[23]-dSteel;
196 gMC->Gsvolu("ABST", "PCON", idtmed[kSteel], par, 24);
43d014f0 197 gMC->Gspos("ABST", 1, "ABSS", 0., 0., 0., 0, "ONLY");
198//
199// Polyethylene shield
200//
b2ef5f06 201 cpar[0] = (zRear - zConeTPC) / 2.;
202 cpar[1] = zConeTPC * TMath::Tan(accMax);
203 cpar[2] = cpar[1] + dPoly;
204 cpar[3] = zRear * TMath::Tan(accMax);
205 cpar[4] = cpar[3] + dPoly;
206 gMC->Gsvolu("APOL", "CONE", idtmed[kPolyCH2+40], cpar, 5);
207 dz = (zRear-zAbsStart)/2.-cpar[0];
43d014f0 208 gMC->Gspos("APOL", 1, "ABSS", 0., 0., dz, 0, "ONLY");
209
210//
211// Tungsten nose to protect TPC
212//
b2ef5f06 213 cpar[0] = (zNose - zAbsStart) / 2.;
214 cpar[1] = zAbsStart * TMath::Tan(accMax);
215 cpar[2] = zAbsStart * TMath::Tan(theta1)-dSteel;
216 cpar[3] = zNose * TMath::Tan(accMax);
217 cpar[4] = zNose * TMath::Tan(theta1)-dSteel;
218 gMC->Gsvolu("ANOS", "CONE", idtmed[kW], cpar, 5);
219//
220 dz = -(zRear-zAbsStart)/2.+cpar[0];
43d014f0 221 gMC->Gspos("ANOS", 1, "ABSS", 0., 0., dz, 0, "ONLY");
222//
223// Tungsten inner shield
224//
b2ef5f06 225 Float_t zW=zTwoDeg+.1;
226 Float_t dZ = zW+(zRear-dRear-zW)/2.;
43d014f0 227 //
b2ef5f06 228 pcpar[0] = 0.;
229 pcpar[1] = 360.;
230 pcpar[2] = 3.;
231 pcpar[3] = zW-dZ;
232 pcpar[4] = rAbs;
233 pcpar[5] = zW * TMath::Tan(accMin);
234 pcpar[6] = zOpen-dZ;
235 pcpar[7] = rAbs;
236 pcpar[8] = zOpen * TMath::Tan(accMin);
237 pcpar[9] = zRear-dRear-dZ;
238 pcpar[10] = rAbs+(zRear-dRear-zOpen) * TMath::Tan(thetaOpen1);
239 pcpar[11] = (zRear-dRear) * TMath::Tan(accMin);
240
241 gMC->Gsvolu("AWIN", "PCON", idtmed[kNiCuW+40], pcpar, 12);
242 //
243 dz=(zW+zRear-dRear)/2-(zAbsStart+zRear)/2.;
43d014f0 244 gMC->Gspos("AWIN", 1, "ABSS", 0., 0., dz, 0, "ONLY");
245
246 // Inner tracking region
247 //
381ec9af 248 // mother volume: Cu
43d014f0 249 //
250 pcpar[0] = 0.;
251 pcpar[1] = 360.;
252 pcpar[2] = 3.;
b2ef5f06 253 pcpar[3] = -(zRear-zAbsStart)/2.;
254 pcpar[4] = rAbs;
255 pcpar[5] = zAbsStart * TMath::Tan(accMax);
256 pcpar[6] = pcpar[3]+(zTwoDeg-zAbsStart);
257 pcpar[7] = rAbs;
258 pcpar[8] = zTwoDeg * TMath::Tan(accMax);
85d164ab 259 pcpar[9] = -pcpar[3];
b2ef5f06 260 pcpar[10] = zRear * TMath::Tan(accMin);
261 pcpar[11] = zRear * TMath::Tan(accMax);
381ec9af 262 gMC->Gsvolu("AITR", "PCON", idtmed[fMLayers[0][4]], pcpar, 12);
43d014f0 263 //
264 // special Pb medium for last 5 cm of Pb
b2ef5f06 265 Float_t zr=zRear-2.-0.001;
266 cpar[0] = 1.0;
267 cpar[1] = zr * TMath::Tan(thetaR);
268 cpar[2] = zr * TMath::Tan(accMax);
269 cpar[3] = cpar[1] + TMath::Tan(thetaR) * 2;
270 cpar[4] = cpar[2] + TMath::Tan(accMax) * 2;
381ec9af 271 gMC->Gsvolu("ARPB", "CONE", idtmed[fMLayers[0][4]], cpar, 5);
b2ef5f06 272 dz=(zRear-zAbsStart)/2.-cpar[0]-0.001;
43d014f0 273 gMC->Gspos("ARPB", 1, "AITR", 0., 0., dz, 0, "ONLY");
43d014f0 274 //
275 // concrete cone: concrete
276 //
b2ef5f06 277 pcpar[9] = pcpar[3]+(zRear-dRear-zAbsStart);
278 pcpar[10] = (zRear-dRear) * TMath::Tan(accMin);
279 pcpar[11] = (zRear-dRear) * TMath::Tan(accMax);
381ec9af 280 gMC->Gsvolu("ACON", "PCON", idtmed[fMLayers[0][2]+40], pcpar, 12);
43d014f0 281 gMC->Gspos("ACON", 1, "AITR", 0., 0., 0., 0, "ONLY");
381ec9af 282//
283// Fe Cone
284//
285 zr = zRear-dRear-dzFe;
286 cpar[0] = dzFe/2.;
287 cpar[1] = zr * TMath::Tan(accMin);
288 cpar[2] = zr * TMath::Tan(accMax);
289 cpar[3] = cpar[1] + TMath::Tan(thetaR) * dzFe;
290 cpar[4] = cpar[2] + TMath::Tan(accMax) * dzFe;
291 gMC->Gsvolu("ACFE", "CONE",idtmed[fMLayers[0][3]], cpar, 5);
292
293 dz = (zRear-zAbsStart)/2.-dRear-dzFe/2.;
294
295 gMC->Gspos("ACFE", 1, "ACON", 0., 0., dz, 0, "ONLY");
296
297
298 //
43d014f0 299 //
300 // carbon cone: carbon
301 //
b2ef5f06 302 pcpar[9] = pcpar[3]+(zAbsCc-zAbsStart);
303 pcpar[10] = zAbsCc * TMath::Tan(accMin);
304 pcpar[11] = zAbsCc * TMath::Tan(accMax);
381ec9af 305 gMC->Gsvolu("ACAR", "PCON", idtmed[fMLayers[0][1]+40], pcpar, 12);
43d014f0 306 gMC->Gspos("ACAR", 1, "ACON", 0., 0., 0., 0, "ONLY");
b2ef5f06 307 //
308 // carbon cone outer region
309 //
310 cpar[0] = 10.;
311 cpar[1] = rAbs;
312 cpar[2] = zAbsStart* TMath::Tan(accMax);
313 cpar[3] = rAbs;
314 cpar[4] = cpar[2]+2. * cpar[0] * TMath::Tan(accMax);
315
381ec9af 316 gMC->Gsvolu("ACAO", "CONE", idtmed[fMLayers[0][1]], cpar, 5);
b2ef5f06 317 dz=-(zRear-zAbsStart)/2.+cpar[0];
318 gMC->Gspos("ACAO", 1, "ACAR", 0., 0., dz, 0, "ONLY");
43d014f0 319 //
320 // inner W shield
b2ef5f06 321 Float_t epsi=0.;
322 Float_t repsi=1.;
323
324 zr=zRear-(dRear-epsi);
325 cpar[0] = (dRear-epsi)/2.;
326 cpar[1] = zr * TMath::Tan(accMin);
327 cpar[2] = zr * TMath::Tan(thetaR*repsi);
328 cpar[3] = cpar[1] + TMath::Tan(accMin) * (dRear-epsi);
329 cpar[4] = cpar[2] + TMath::Tan(thetaR*repsi) * (dRear-epsi);
381ec9af 330 gMC->Gsvolu("ARW0", "CONE", idtmed[fMLayers[1][4]+40], cpar, 5);
b2ef5f06 331 dz=(zRear-zAbsStart)/2.-cpar[0];
43d014f0 332 gMC->Gspos("ARW0", 1, "AITR", 0., 0., dz, 0, "ONLY");
333 //
334 // special W medium for last 5 cm of W
b2ef5f06 335 zr=zRear-5;
43d014f0 336 cpar[0] = 2.5;
b2ef5f06 337 cpar[1] = zr * TMath::Tan(accMin);
338 cpar[2] = zr * TMath::Tan(thetaR*repsi);
339 cpar[3] = cpar[1] + TMath::Tan(accMin) * 5.;
340 cpar[4] = cpar[2] + TMath::Tan(thetaR*repsi) * 5.;
381ec9af 341 gMC->Gsvolu("ARW1", "CONE", idtmed[fMLayers[1][4]+20], cpar, 5);
b2ef5f06 342 dz=(dRear-epsi)/2.-cpar[0];
43d014f0 343 gMC->Gspos("ARW1", 1, "ARW0", 0., 0., dz, 0, "ONLY");
344 //
381ec9af 345 // Cu
b2ef5f06 346 Float_t drMin=TMath::Tan(thetaR) * 5;
347 Float_t drMax=TMath::Tan(accMax) * 5;
381ec9af 348 gMC->Gsvolu("ARPE", "CONE", idtmed[fMLayers[0][4]], cpar, 0);
43d014f0 349 cpar[0]=2.5;
74c0d076 350 { // Begin local scope for i
b2ef5f06 351 for (Int_t i=0; i<3; i++) {
352 zr=zRear-dRear+5+i*10.;
353 cpar[1] = zr * TMath::Tan(thetaR);
354 cpar[2] = zr * TMath::Tan(accMax);
355 cpar[3] = cpar[1] + drMin;
356 cpar[4] = cpar[2] + drMax;
357 dz=(zRear-zAbsStart)/2.-cpar[0]-5.-(2-i)*10;
358 gMC->Gsposp("ARPE", i+1, "AITR", 0., 0., dz, 0, "ONLY",cpar,5);
359 }
74c0d076 360 } // End local scope for i
43d014f0 361 gMC->Gspos("AITR", 1, "ABSS", 0., 0., 0., 0, "ONLY");
b2ef5f06 362 dz = (zRear-zAbsStart)/2.+zAbsStart;
43d014f0 363 gMC->Gspos("ABSM", 1, "ALIC", 0., 0., dz, 0, "ONLY");
364//
365//
366// vacuum system
367//
368// pipe and heating jackets
369//
370//
371// cylindrical piece
b2ef5f06 372 tpar0[2]=(zOpen-zAbsStart)/2;
373 tpar0[0]=rVacu;
374 tpar0[1]=rAbs;
375 gMC->Gsvolu("AV11", "TUBE", idtmed[kSteel+40], tpar0, 3);
43d014f0 376//
377// insulation
b2ef5f06 378
43d014f0 379 tpar[2]=tpar0[2];
b2ef5f06 380 tpar[0]=rVacu+dTube;
381 tpar[1]=tpar[0]+dInsu;
382 gMC->Gsvolu("AI11", "TUBE", idtmed[kInsulation+40], tpar, 3);
43d014f0 383 gMC->Gspos("AI11", 1, "AV11", 0., 0., 0., 0, "ONLY");
384//
b2ef5f06 385// clearance
386 tpar[0]=tpar[1]+dEnve;
387 tpar[1]=tpar[0]+dFree;
388 gMC->Gsvolu("AP11", "TUBE", idtmed[kAir+40], tpar, 3);
43d014f0 389 gMC->Gspos("AP11", 1, "AV11", 0., 0., 0., 0, "ONLY");
b2ef5f06 390//
391 dz=-(zRear-zAbsStart)/2.+tpar0[2];
43d014f0 392 gMC->Gspos("AV11", 1, "ABSM", 0., 0., dz, 0, "ONLY");
43d014f0 393//
394// conical piece
b2ef5f06 395
396 cpar0[0]=(zRear-dRear-zOpen)/2;
397 cpar0[1]=rVacu-0.05;
398 cpar0[2]=rAbs;
399 Float_t dR=2.*cpar0[0]*TMath::Tan(thetaOpen1);
400 cpar0[3]=cpar0[1]+dR;
401 cpar0[4]=cpar0[2]+dR;
402 gMC->Gsvolu("AV21", "CONE", idtmed[kSteel+40], cpar0, 5);
403 dTube+=0.05;
404
43d014f0 405//
406// insulation
407 cpar[0]=cpar0[0];
b2ef5f06 408 cpar[1]=cpar0[1]+dTube;
409 cpar[2]=cpar0[1]+dTube+dInsu;
410 cpar[3]=cpar0[3]+dTube;
411 cpar[4]=cpar0[3]+dTube+dInsu;
412 gMC->Gsvolu("AI21", "CONE", idtmed[kInsulation+40], cpar, 5);
43d014f0 413 gMC->Gspos("AI21", 1, "AV21", 0., 0., 0., 0, "ONLY");
414//
415// clearance
b2ef5f06 416 cpar[1]=cpar0[1]+dTube+dInsu+dEnve;
417 cpar[2]=rAbs;
418 cpar[3]=cpar0[1]+dTube+dInsu+dEnve+dR;
419 cpar[4]=rAbs+dR;
420
421 gMC->Gsvolu("AP21", "CONE", idtmed[kAir+40], cpar, 5);
43d014f0 422 gMC->Gspos("AP21", 1, "AV21", 0., 0., 0., 0, "ONLY");
423
b2ef5f06 424 dz=(zRear-zAbsStart)/2.-cpar0[0]-dRear;
43d014f0 425 gMC->Gspos("AV21", 1, "ABSM", 0., 0., dz, 0, "ONLY");
381ec9af 426//
427// Support cone
428
429 par[0] = 0.;
430 par[1] = 360.;
431 par[2] = 4.;
432
433 par[3] = zRear;
434 par[4] = 100.;
435 par[5] = 170.;
436
437 par[6] = zRear+2.;
438 par[7] = 100.;
439 par[8] = 170.;
440
441 par[9] = zRear+2.;
442 par[10] = 168.;
443 par[11] = 170.;
444
445 par[12] = 600.;
446 par[13] = 168.;
447 par[14] = 170.;
448
449
450 gMC->Gsvolu("ASSS", "PCON", idtmed[kSteel], par, 25);
451 gMC->Gspos("ASSS", 1, "ALIC", 0., 0., 0., 0, "ONLY");
452
453
43d014f0 454}
455
456//_____________________________________________________________________________
457
458void AliABSOv0::Init()
459{
460 //
461 // Initialisation of the muon absorber after it has been built
462 Int_t i;
463 //
464 printf("\n");
465 for(i=0;i<35;i++) printf("*");
466 printf(" ABSOv0_INIT ");
467 for(i=0;i<35;i++) printf("*");
468 printf("\n");
469 //
470 for(i=0;i<80;i++) printf("*");
471 printf("\n");
472}
473
474
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482