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The small angle absorber geometry "as built".
[u/mrichter/AliRoot.git] / STRUCT / AliSHILv3.cxx
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20c7dbe5 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// The small angle absorber SAA (beam shield)
20// Author: A.Morsch
21// andreas.morsch@cern.ch
22//-------------------------------------------------------------------------
23
24#include <TVirtualMC.h>
25#include <TArrayI.h>
26#include <TGeoVolume.h>
27#include <TGeoTube.h>
28#include <TGeoManager.h>
29#include <TGeoMatrix.h>
30#include <TGeoCompositeShape.h>
31#include <TGeoBBox.h>
32#include <TGeoPgon.h>
33#include <TGeoCone.h>
34
35#include "AliSHILv3.h"
36#include "AliConst.h"
37#include "AliLog.h"
38
39ClassImp(AliSHILv3)
40
41//_____________________________________________________________________________
42AliSHILv3::AliSHILv3()
43{
44 //
45 // Default constructor for muon shield
46 //
47}
48
49//_____________________________________________________________________________
50AliSHILv3::AliSHILv3(const char *name, const char *title)
51 : AliSHIL(name,title)
52{
53 //
54 // Standard constructor for muon shield
55 //
56 SetMarkerColor(7);
57 SetMarkerStyle(2);
58 SetMarkerSize(0.4);
59}
60
61//_____________________________________________________________________________
62void AliSHILv3::CreateGeometry()
63{
64//
65// The geometry of the small angle absorber "Beam Shield"
66//
67 Float_t dz, dr, z, rmax;
68//
69// The top volume
70//
71 TGeoVolume* top = gGeoManager->GetVolume("ALIC");
72
73//
74// Translations
75//
76 TGeoTranslation* vec0 = new TGeoTranslation(0., 0., 0.);
77// Rotations
78 TGeoRotation* rot000 = new TGeoRotation("rot000", 90., 0., 90., 90., 0., 0.);
79 TGeoRotation* rot090 = new TGeoRotation("rot090", 90., 90., 90., 180., 0., 0.);
80 TGeoRotation* rot180 = new TGeoRotation("rot180", 90., 180., 90., 270., 0., 0.);
81 TGeoRotation* rot270 = new TGeoRotation("rot270", 90., 270., 90., 0., 0., 0.);
82//
83// Media
84//
85 TGeoMedium* kMedNiW = gGeoManager->GetMedium("SHIL_Ni/W0");
86 TGeoMedium* kMedNiWsh = gGeoManager->GetMedium("SHIL_Ni/W3");
87 TGeoMedium* kMedSteel = gGeoManager->GetMedium("SHIL_ST_C0");
88 TGeoMedium* kMedSteelSh = gGeoManager->GetMedium("SHIL_ST_C3");
89 TGeoMedium* kMedAir = gGeoManager->GetMedium("SHIL_AIR_C0");
90 TGeoMedium* kMedAirMu = gGeoManager->GetMedium("SHIL_AIR_MUON");
91 TGeoMedium* kMedPb = gGeoManager->GetMedium("SHIL_PB_C0");
92 TGeoMedium* kMedPbSh = gGeoManager->GetMedium("SHIL_PB_C2");
93 TGeoMedium* kMedConc = gGeoManager->GetMedium("SHIL_CC_C0");
94//
95 const Float_t kDegRad = TMath::Pi() / 180.;
96 const Float_t kAngle02 = TMath::Tan( 2.00 * kDegRad);
97 const Float_t kAngle0071 = TMath::Tan( 0.71 * kDegRad);
98
99
100///////////////////////////////////
101// FA Tungsten Tail //
102// Drawing ALIP2A__0049 //
103// Drawing ALIP2A__0111 //
104///////////////////////////////////
105//
106// The tail as built is shorter than in drawing ALIP2A__0049.
107// The CDD data base has to be updated !
108//
109// Inner radius at the entrance of the flange
110 Float_t rInFaWTail1 = 13.98/2.;
111// Outer radius at the entrance of the flange
112 Float_t rOuFaWTail1 = 52.00/2.;
113// Outer radius at the end of the section inside the FA
114 Float_t rOuFaWTail2 = 35.27/2.;
115// Length of the Flange section inside the FA
116 Float_t dzFaWTail1 = 6.00;
117// Length of the Flange section ouside the FA
118 Float_t dzFaWTail2 = 12.70;
119// Inner radius at the end of the section inside the FA
120 Float_t rInFaWTail2 = rInFaWTail1 + dzFaWTail1 * kAngle0071;
121// Inner radius at the end of the flange
122 Float_t rInFaWTail3 = rInFaWTail2 + dzFaWTail2 * kAngle0071;
123// Outer radius at the end of the flange
124 Float_t rOuFaWTail3 = rOuFaWTail2 + dzFaWTail2 * kAngle02;
125// Outer radius of the recess for station 1
126 Float_t rOuFaWTailR = 30.8/2.;
127// Length of the recess
128 Float_t dzFaWTailR = 36.00;
129// Inner radiues at the end of the recess
130 Float_t rInFaWTail4 = rInFaWTail3 + dzFaWTailR * kAngle0071;
131// Outer radius at the end of the recess
132 Float_t rOuFaWTail4 = rOuFaWTail3 + dzFaWTailR * kAngle02;
133// Inner radius of the straight section
134 Float_t rInFaWTailS = 22.30/2.;
135// Length of the bulge
136 Float_t dzFaWTailB = 13.0;
137// Outer radius at the end of the bulge
138 Float_t rOuFaWTailB = rOuFaWTail4 + dzFaWTailB * kAngle02;
139// Outer radius at the end of the tail
140 Float_t rOuFaWTailE = 31.6/2.;
141// Total length of the tail
142 Float_t dzFaWTail = 70.7;
143
144 TGeoPcon* shFaWTail = new TGeoPcon(0., 360., 10);
145 z = 0.;
146// Flange section inside FA
147 shFaWTail->DefineSection(0, z, rInFaWTail1, rOuFaWTail1);
148 z += dzFaWTail1;
149 shFaWTail->DefineSection(1, z, rInFaWTail2, rOuFaWTail1);
150 shFaWTail->DefineSection(2, z, rInFaWTail2, rOuFaWTail2);
151// Flange section outside FA
152 z += dzFaWTail2;
153 shFaWTail->DefineSection(3, z, rInFaWTail3, rOuFaWTail3);
154 shFaWTail->DefineSection(4, z, rInFaWTail3, rOuFaWTailR);
155// Recess Station 1
156 z += dzFaWTailR;
157 shFaWTail->DefineSection(5, z, rInFaWTail4, rOuFaWTailR);
158 shFaWTail->DefineSection(6, z, rInFaWTailS, rOuFaWTail4);
159// Bulge
160 z += dzFaWTailB;
161 shFaWTail->DefineSection(7, z, rInFaWTailS, rOuFaWTailB);
162 shFaWTail->DefineSection(8, z, rInFaWTailS, rOuFaWTailE);
163// End
164 z = dzFaWTail;
165 shFaWTail->DefineSection(9, z, rInFaWTailS, rOuFaWTailE);
166
167 TGeoVolume* voFaWTail = new TGeoVolume("YFaWTail", shFaWTail, kMedNiW);
168//
169// Define an inner region with higher transport cuts
170 TGeoPcon* shFaWTailI = new TGeoPcon(0., 360., 4);
171 z = 0.;
172 dr = 3.5;
173 shFaWTailI->DefineSection(0, z, rInFaWTail1, rInFaWTail1 + dr);
174 z += (dzFaWTail1 + dzFaWTail2 + dzFaWTailR);
175 shFaWTailI->DefineSection(1, z, rInFaWTail4, rInFaWTail4 + dr);
176 shFaWTailI->DefineSection(2, z, rInFaWTailS, rInFaWTailS + dr);
177 z = dzFaWTail;
178 shFaWTailI->DefineSection(3, z, rInFaWTailS, rInFaWTailS + dr);
179 TGeoVolume* voFaWTailI = new TGeoVolume("YFaWTailI", shFaWTailI, kMedNiWsh);
180 voFaWTail->AddNode(voFaWTailI, 1, vec0);
181
182///////////////////////////////////
183// //
184// Recess Station 1 //
185// Drawing ALIP2A__0260 //
186///////////////////////////////////
187
188///////////////////////////////////
189// FA W-Ring 2 //
190// Drawing ALIP2A__0220 //
191///////////////////////////////////
192 const Float_t kFaWring2Rinner = 15.40;
193 const Float_t kFaWring2Router = 18.40;
194 const Float_t kFaWring2HWidth = 3.75;
195 const Float_t kFaWring2Cutoffx = 3.35;
196 const Float_t kFaWring2Cutoffy = 3.35;
197 TGeoTubeSeg* shFaWring2a = new TGeoTubeSeg(kFaWring2Rinner, kFaWring2Router, kFaWring2HWidth, 0., 90.);
198 shFaWring2a->SetName("shFaWring2a");
199 TGeoBBox* shFaWring2b = new TGeoBBox(kFaWring2Router / 2., kFaWring2Router / 2., kFaWring2HWidth);
200 shFaWring2b->SetName("shFaWring2b");
201 TGeoTranslation* trFaWring2b
202 = new TGeoTranslation("trFaWring2b", kFaWring2Router / 2. + kFaWring2Cutoffx, kFaWring2Router / 2. + kFaWring2Cutoffy, 0.);
203 trFaWring2b->RegisterYourself();
204 TGeoCompositeShape* shFaWring2 = new TGeoCompositeShape("shFaWring2", "(shFaWring2a)*(shFaWring2b:trFaWring2b)");
205 TGeoVolume* voFaWring2 = new TGeoVolume("YFA_WRING2", shFaWring2, kMedNiW);
206
207///////////////////////////////////
208// FA W-Ring 3 //
209// Drawing ALIP2A__0219 //
210///////////////////////////////////
211 const Float_t kFaWring3Rinner = 15.40;
212 const Float_t kFaWring3Router = 18.40;
213 const Float_t kFaWring3HWidth = 3.75;
214 const Float_t kFaWring3Cutoffx = 3.35;
215 const Float_t kFaWring3Cutoffy = 3.35;
216 TGeoTubeSeg* shFaWring3a = new TGeoTubeSeg(kFaWring3Rinner, kFaWring3Router, kFaWring3HWidth, 0., 90.);
217 shFaWring3a->SetName("shFaWring3a");
218 TGeoBBox* shFaWring3b = new TGeoBBox(kFaWring3Router / 2., kFaWring3Router / 2., kFaWring3HWidth);
219 shFaWring3b->SetName("shFaWring3b");
220 TGeoTranslation* trFaWring3b
221 = new TGeoTranslation("trFaWring3b", kFaWring3Router / 2. + kFaWring3Cutoffx, kFaWring3Router / 2. + kFaWring3Cutoffy, 0.);
222 trFaWring3b->RegisterYourself();
223 TGeoCompositeShape* shFaWring3 = new TGeoCompositeShape("shFaWring3", "(shFaWring3a)*(shFaWring3b:trFaWring3b)");
224 TGeoVolume* voFaWring3 = new TGeoVolume("YFA_WRING3", shFaWring3, kMedNiW);
225
226///////////////////////////////////
227// FA W-Ring 5 //
228// Drawing ALIP2A__0221 //
229///////////////////////////////////
230 const Float_t kFaWring5Rinner = 15.40;
231 const Float_t kFaWring5Router = 18.67;
232 const Float_t kFaWring5HWidth = 1.08;
233 TGeoVolume* voFaWring5 = new TGeoVolume("YFA_WRING5", new TGeoTube(kFaWring5Rinner, kFaWring5Router, kFaWring5HWidth), kMedNiW);
234
235//
236// Position the rings in the assembly
237//
238 TGeoVolumeAssembly* asFaExtraShield = new TGeoVolumeAssembly("YCRE");
239// Distance between rings
240 const Float_t kFaDWrings = 1.92;
241//
242 dz = 0.;
243
244 dz += kFaWring2HWidth;
245 asFaExtraShield->AddNode(voFaWring2, 1, new TGeoCombiTrans(0., 0., dz, rot090));
246 asFaExtraShield->AddNode(voFaWring2, 2, new TGeoCombiTrans(0., 0., dz, rot270));
247 dz += kFaWring2HWidth;
248 dz += kFaDWrings;
249 dz += kFaWring3HWidth;
250 asFaExtraShield->AddNode(voFaWring3, 1, new TGeoCombiTrans(0., 0., dz, rot000));
251 asFaExtraShield->AddNode(voFaWring3, 2, new TGeoCombiTrans(0., 0., dz, rot180));
252 dz += kFaWring3HWidth;
253 dz += kFaWring5HWidth;
254 asFaExtraShield->AddNode(voFaWring5, 1, new TGeoTranslation(0., 0., dz));
255 dz += kFaWring5HWidth;
256 dz += kFaWring3HWidth;
257 asFaExtraShield->AddNode(voFaWring3, 3, new TGeoCombiTrans(0., 0., dz, rot090));
258 asFaExtraShield->AddNode(voFaWring3, 4, new TGeoCombiTrans(0., 0., dz, rot270));
259 dz += kFaWring3HWidth;
260 dz += kFaDWrings;
261 dz += kFaWring2HWidth;
262 asFaExtraShield->AddNode(voFaWring2, 3, new TGeoCombiTrans(0., 0., dz, rot000));
263 asFaExtraShield->AddNode(voFaWring2, 4, new TGeoCombiTrans(0., 0., dz, rot180));
264 dz += kFaWring2HWidth;
265
266
267///////////////////////////////////////
268// SAA1 //
269///////////////////////////////////////
270
271
272///////////////////////////////////////
273// FA/SAA1 W Joint //
274// Drawing ALIP2A__0060 //
275///////////////////////////////////////
276
277// Length of flange FA side
278 Float_t dzFaSaa1F1 = 2.8;
279// Inner radius of flange FA side
280 Float_t rInFaSaa1F1 = 32.0/2.;
281// Outer radius of flange FA side
282 Float_t rOuFaSaa1F1 = 39.5/2.;
283// Length of first straight section
284 Float_t dzFaSaa1S1 = 18.5 - dzFaSaa1F1;
285// Inner radius of first straight section
286 Float_t rInFaSaa1S1 = 22.3/2.;
287// Length of 45 deg transition region
288 Float_t dzFaSaa1T1 = 2.2;
289// Inner radius of second straight section
290 Float_t rInFaSaa1S2 = 17.9/2.;
291// Length of second straight section
292 Float_t dzFaSaa1S2 = 10.1;
293// Length of flange SAA1 side
294// Float_t dzFaSaa1F2 = 4.0;
295// Inner radius of flange FA side
296 Float_t rInFaSaa1F2 = 25.2/2.;
297// Length of joint
298 Float_t dzFaSaa1 = 34.8;
299// Outer Radius at the end of the joint
300 Float_t rOuFaSaa1E = 41.93/2.;
301
302
303 TGeoPcon* shFaSaa1 = new TGeoPcon(0., 360., 8);
304 z = 0;
305// Flange FA side
306 shFaSaa1->DefineSection( 0, z, rInFaSaa1F1, rOuFaSaa1F1);
307 z += dzFaSaa1F1;
308 shFaSaa1->DefineSection( 1, z, rInFaSaa1F1, 40.0);
309 shFaSaa1->DefineSection( 2, z, rInFaSaa1S1, 40.0);
310// First straight section
311 z += dzFaSaa1S1;
312 shFaSaa1->DefineSection( 3, z, rInFaSaa1S1, 40.0);
313// 45 deg transition region
314 z += dzFaSaa1T1;
315 shFaSaa1->DefineSection( 4, z, rInFaSaa1S2, 40.0);
316// Second straight section
317 z += dzFaSaa1S2;
318 shFaSaa1->DefineSection( 5, z, rInFaSaa1S2, 40.0);
319 shFaSaa1->DefineSection( 6, z, rInFaSaa1F2, 40.0);
320// Flange SAA1 side
321 z = dzFaSaa1;
322 shFaSaa1->DefineSection( 7, z, rInFaSaa1F2, rOuFaSaa1E);
323
324// Outer 2 deg line
325 for (Int_t i = 1; i < 7; i++) {
326 Double_t z = shFaSaa1->GetZ(i);
327 Double_t r1 = shFaSaa1->GetRmin(i);
328 Double_t r2 = 39.5/2. + z * TMath::Tan(2. * kDegRad) - 0.01;
329 shFaSaa1->DefineSection(i, z, r1, r2);
330 }
331 TGeoVolume* voFaSaa1 = new TGeoVolume("YFASAA1", shFaSaa1, kMedNiWsh);
332//
333// Outer region with lower transport cuts
334 TGeoCone* shFaSaa1O = new TGeoCone(dzFaSaa1/2., rOuFaSaa1F1 - 3.5, rOuFaSaa1F1, rOuFaSaa1E - 3.5, rOuFaSaa1E);
335 TGeoVolume* voFaSaa1O = new TGeoVolume("YFASAA1O", shFaSaa1O, kMedNiW);
336 voFaSaa1->AddNode(voFaSaa1O, 1, new TGeoTranslation(0., 0., dzFaSaa1/2.));
337
338
339///////////////////////////////////
340// SAA1 Steel Envelope //
341// Drawing ALIP2A__0039 //
342///////////////////////////////////
343
344 Float_t rOut; // Outer radius
345// Thickness of the steel envelope
346 Float_t dSt = 4.;
347// 4 Section
348// z-positions
349 Float_t zSaa1StEnv[5] = {111.2, 113.7, 229.3, 195.0};
350// Radii
351// 1
352 Float_t rOuSaa1StEnv1 = 40.4/2.;
353 Float_t rInSaa1StEnv1 = rOuSaa1StEnv1 - dSt;
354// 2
355 Float_t rInSaa1StEnv2 = 41.7/2.;
356 Float_t rOuSaa1StEnv2 = rInSaa1StEnv2 + dSt / TMath::Cos(2.0 * kDegRad);
357// 3
358 Float_t rOuSaa1StEnv3 = 57.6/2.;
359 Float_t rInSaa1StEnv3 = rOuSaa1StEnv3 - dSt;
360// 4
361 Float_t rInSaa1StEnv4 = 63.4/2.;
362 Float_t rOuSaa1StEnv4 = rInSaa1StEnv4 + dSt / TMath::Cos(1.6 * kDegRad);
363// end
364 Float_t rInSaa1StEnv5 = 74.28/2.;
365 Float_t rOuSaa1StEnv5 = rInSaa1StEnv5 + dSt / TMath::Cos(1.6 * kDegRad);
366// Relative starting position
367 Float_t zSaa1StEnvS = 3.;
368
369 TGeoPcon* shSaa1StEnv = new TGeoPcon(0., 360., 11);
370// 1st Section
371 z = zSaa1StEnvS;
372 shSaa1StEnv->DefineSection( 0, z, rInSaa1StEnv1, rOuSaa1StEnv1);
373 z += (zSaa1StEnv[0] - dSt);
374 shSaa1StEnv->DefineSection( 1, z, rInSaa1StEnv1, rOuSaa1StEnv1);
375// 1 - 2
376 shSaa1StEnv->DefineSection( 2, z, rInSaa1StEnv1, rOuSaa1StEnv2);
377 z += dSt;
378 shSaa1StEnv->DefineSection( 3, z, rInSaa1StEnv1, rOuSaa1StEnv2);
379// 2nd Section
380 shSaa1StEnv->DefineSection( 4, z, rInSaa1StEnv2, rOuSaa1StEnv2);
381 z += zSaa1StEnv[1];
382 shSaa1StEnv->DefineSection( 5, z, rInSaa1StEnv3, rOuSaa1StEnv3);
383// 3rd Section
384 z += (zSaa1StEnv[2] - dSt);
385 shSaa1StEnv->DefineSection( 6, z, rInSaa1StEnv3, rOuSaa1StEnv3);
386// 3 - 4
387 shSaa1StEnv->DefineSection( 7, z, rInSaa1StEnv3, rOuSaa1StEnv4);
388 z += dSt;
389 shSaa1StEnv->DefineSection( 8, z, rInSaa1StEnv3, rOuSaa1StEnv4);
390// 4th Section
391 shSaa1StEnv->DefineSection( 9, z, rInSaa1StEnv4, rOuSaa1StEnv4);
392 z += zSaa1StEnv[3];
393 shSaa1StEnv->DefineSection(10, z, rInSaa1StEnv5, rOuSaa1StEnv5);
394 TGeoVolume* voSaa1StEnv = new TGeoVolume("YSAA1_SteelEnvelope", shSaa1StEnv, kMedSteel);
395
396
397
398
399
400///////////////////////////////////
401// SAA1 W-Pipe //
402// Drawing ALIP2A__0059 //
403///////////////////////////////////
404//
405// Flange FA side
406// Length of first section
407 Float_t dzSaa1WPipeF1 = 0.9;
408// Outer radius
409 Float_t rOuSaa1WPipeF1 = 24.5/2.;
410// Inner Radius
411 Float_t rInSaa1WPipeF1 = 22.0/2.;
412// Length of second section
413 Float_t dzSaa1WPipeF11 = 2.1;
414// Inner Radius
415 Float_t rInSaa1WPipeF11 = 18.5/2.;
416//
417// Central tube
418// Length
419 Float_t dzSaa1WPipeC = 111.2;
420// Inner Radius at the end
421 Float_t rInSaa1WPipeC = 22.0/2.;
422// Outer Radius
423 Float_t rOuSaa1WPipeC = 31.9/2.;
424//
425// Flange SAA2 Side
426// Length
427 Float_t dzSaa1WPipeF2 = 6.0;
428// Outer radius
429 Float_t rOuSaa1WPipeF2 = 41.56/2.;
430
431//
432 TGeoPcon* shSaa1WPipe = new TGeoPcon(0., 360., 8);
433 z = 0.;
434// Flange FA side first section
435 shSaa1WPipe->DefineSection( 0, z, rInSaa1WPipeF1 , rOuSaa1WPipeF1);
436 z += dzSaa1WPipeF1;
437 shSaa1WPipe->DefineSection( 1, z, rInSaa1WPipeF1 , rOuSaa1WPipeF1);
438// Flange FA side second section
439 shSaa1WPipe->DefineSection( 2, z, rInSaa1WPipeF11, rOuSaa1WPipeF1);
440 z += dzSaa1WPipeF11;
441 shSaa1WPipe->DefineSection( 3, z, rInSaa1WPipeF11, rOuSaa1WPipeF1);
442// Central Section
443 shSaa1WPipe->DefineSection( 4, z, rInSaa1WPipeF11, rOuSaa1WPipeC);
444 z += dzSaa1WPipeC;
445 shSaa1WPipe->DefineSection( 5, z, rInSaa1WPipeC, rOuSaa1WPipeC);
446// Flange SAA2 side
447 shSaa1WPipe->DefineSection( 6, z, rInSaa1WPipeC, rOuSaa1WPipeF2);
448 z += dzSaa1WPipeF2;
449 shSaa1WPipe->DefineSection( 7, z, rInSaa1WPipeC, rOuSaa1WPipeF2);
450
451 TGeoVolume* voSaa1WPipe = new TGeoVolume("YSAA1_WPipe", shSaa1WPipe, kMedNiW);
452//
453// Inner region with higher transport cuts
454 TGeoTube* shSaa1WPipeI = new TGeoTube(rInSaa1WPipeC, rOuSaa1WPipeC, dzSaa1WPipeC/2.);
455 TGeoVolume* voSaa1WPipeI = new TGeoVolume("YSAA1_WPipeI", shSaa1WPipeI, kMedNiWsh);
456 voSaa1WPipe->AddNode(voSaa1WPipeI, 1, new TGeoTranslation(0., 0., dzSaa1WPipeF1 + dzSaa1WPipeF11 + dzSaa1WPipeC/2));
457
458
459///////////////////////////////////
460// SAA1 Pb Components //
461// Drawing ALIP2A__0078 //
462///////////////////////////////////
463//
464// Inner angle
465 Float_t tanAlpha = TMath::Tan(1.69 / 2. * kDegRad);
466 Float_t tanBeta = TMath::Tan(3.20 / 2. * kDegRad);
467//
468// 1st Section 2deg opening cone
469// Length
470 Float_t dzSaa1PbComp1 = 100.23;
471// Inner radius at entrance
472 Float_t rInSaa1PbComp1 = 22.0/2.; // It's 21 cm diameter in the drawing. Is this a typo ??!!
473// Outer radius at entrance
474 Float_t rOuSaa1PbComp1 = 42.0/2.;
475//
476// 2nd Section: Straight Section
477// Length
478 Float_t dzSaa1PbComp2 = 236.77;
479// Inner radius
480 Float_t rInSaa1PbComp2 = rInSaa1PbComp1 + dzSaa1PbComp1 * tanAlpha;
481// Outer radius
482 Float_t rOuSaa1PbComp2 = 49.0/2.;
483//
484// 3rd Section: 1.6deg opening cone until bellow
485// Length
486 Float_t dzSaa1PbComp3 = 175.6;
487// Inner radius
488 Float_t rInSaa1PbComp3 = rInSaa1PbComp2 + dzSaa1PbComp2 * tanAlpha;
489// Outer radius
490 Float_t rOuSaa1PbComp3 = 62.8/2.;
491//
492// 4th Section: Bellow region
493 Float_t dzSaa1PbComp4 = 26.4;
494// Inner radius
495 Float_t rInSaa1PbComp4 = 37.1/2.;
496 Float_t rInSaa1PbCompB = 43.0/2.;
497// Outer radius
498 Float_t rOuSaa1PbComp4 = rOuSaa1PbComp3 + dzSaa1PbComp3 * tanBeta;
499//
500// 5th Section: Flange SAA2 side
501// 1st detail
502 Float_t dzSaa1PbCompF1 = 4.;
503 Float_t rOuSaa1PbCompF1 = 74.1/2.;
504// 2nd detail
505 Float_t dzSaa1PbCompF2 = 3.;
506 Float_t rOuSaa1PbCompF2 = 66.0/2.;
507 Float_t rOuSaa1PbCompF3 = 58.0/2.;
508
509
510 TGeoPcon* shSaa1PbComp = new TGeoPcon(0., 360., 11);
511 z = 120.2;
512// 2 deg opening cone
513 shSaa1PbComp->DefineSection( 0, z, rInSaa1PbComp1, rOuSaa1PbComp1);
514 z += dzSaa1PbComp1;
515 shSaa1PbComp->DefineSection( 1, z, rInSaa1PbComp2, rOuSaa1PbComp2);
516// Straight section
517 z += dzSaa1PbComp2;
518 shSaa1PbComp->DefineSection( 2, z, rInSaa1PbComp3, rOuSaa1PbComp2);
519// 1.6 deg opening cone
520 shSaa1PbComp->DefineSection( 3, z, rInSaa1PbComp3, rOuSaa1PbComp3);
521 z += dzSaa1PbComp3;
522 shSaa1PbComp->DefineSection( 4, z, rInSaa1PbComp4, rOuSaa1PbComp4);
523// Bellow region until outer flange
524 shSaa1PbComp->DefineSection( 5, z, rInSaa1PbCompB, rOuSaa1PbComp4);
525 z += (dzSaa1PbComp4 - dzSaa1PbCompF1 - dzSaa1PbCompF2);
526 shSaa1PbComp->DefineSection( 6, z, rInSaa1PbCompB, rOuSaa1PbCompF1);
527 shSaa1PbComp->DefineSection( 7, z, rInSaa1PbCompB, rOuSaa1PbCompF2);
528// Flange first step
529 z += dzSaa1PbCompF1;
530 shSaa1PbComp->DefineSection( 8, z, rInSaa1PbCompB, rOuSaa1PbCompF2);
531 shSaa1PbComp->DefineSection( 9, z, rInSaa1PbCompB, rOuSaa1PbCompF3);
532// Flange second step
533 z += dzSaa1PbCompF2;
534 shSaa1PbComp->DefineSection( 10, z, rInSaa1PbCompB, rOuSaa1PbCompF3);
535
536 TGeoVolume* voSaa1PbComp = new TGeoVolume("YSAA1_PbComp", shSaa1PbComp, kMedPb);
537//
538// Inner region with higher transport cuts
539 TGeoPcon* shSaa1PbCompI = MakeShapeFromTemplate(shSaa1PbComp, 0., -3.);
540 TGeoVolume* voSaa1PbCompI = new TGeoVolume("YSAA1_PbCompI", shSaa1PbCompI, kMedPbSh);
541 voSaa1PbComp->AddNode(voSaa1PbCompI, 1, vec0);
542
543///////////////////////////////////
544// SAA1 W-Cone //
545// Drawing ALIP2A__0058 //
546///////////////////////////////////
547 // Length of the Cone
548 Float_t dzSaa1WCone = 52.9;
549 // Inner and outer radii
550 Float_t rInSaa1WCone1 = 20.4;
551 Float_t rOuSaa1WCone1 = rInSaa1WCone1 + 0.97;
552 Float_t rOuSaa1WCone2 = rInSaa1WCone1 + 2.80;
553 // relative z-position
554 Float_t zSaa1WCone = 9.3;
555
556
557 TGeoPcon* shSaa1WCone = new TGeoPcon(0., 360., 2);
558 z = zSaa1WCone;
559 shSaa1WCone->DefineSection( 0, z, rInSaa1WCone1, rOuSaa1WCone1);
560 z += dzSaa1WCone;
561 shSaa1WCone->DefineSection( 1, z, rInSaa1WCone1, rOuSaa1WCone2);
562 TGeoVolume* voSaa1WCone = new TGeoVolume("YSAA1_WCone", shSaa1WCone, kMedNiW);
563
564///////////////////////////////////
565// SAA1 Steel-Ring //
566// Drawing ALIP2A__0040 //
567///////////////////////////////////
568//
569// Length of the ring
570 Float_t dzSaa1StRing = 4.;
571// Inner and outer radius
572 Float_t rInSaa1String = 33.0;
573 Float_t rOuSaa1String = 41.1;
574// Relative z-position
575 Float_t zSaa1StRing = 652.2;
576 TGeoPcon* shSaa1StRing = new TGeoPcon(0., 360., 2);
577 z = zSaa1StRing;
578 shSaa1StRing->DefineSection( 0, z, rInSaa1String, rOuSaa1String);
579 z += dzSaa1StRing;
580 shSaa1StRing->DefineSection( 1, z, rInSaa1String, rOuSaa1String);
581 TGeoVolume* voSaa1StRing = new TGeoVolume("YSAA1_StRing", shSaa1StRing, kMedSteel);
582
583///////////////////////////////////
584// SAA1 Inner Tube //
585// Drawing ALIP2A__0082 //
586///////////////////////////////////
587//
588// Length of saa2: 659.2 cm
589// Length of inner tube: 631.9 cm
590// Lenth of bellow cavern: 27.3 cm
591// Radius at entrance 18.5/2, d = 0.3
592// Radius at exit 37.1/2, d = 0.3
593//
594 Float_t dzSaa1InnerTube = 631.9/2.; // Half length of the tube
595 Float_t rInSaa1InnerTube = 18.2/2.; // Radius at entrance
596 Float_t rOuSaa1InnerTube = 36.8/2.; // Radius at exit
597 Float_t dSaa1InnerTube = 0.2 ; // Thickness
598 TGeoVolume* voSaa1InnerTube = new TGeoVolume("YSAA1_InnerTube",
599 new TGeoCone(dzSaa1InnerTube,
600 rInSaa1InnerTube - dSaa1InnerTube, rInSaa1InnerTube,
601 rOuSaa1InnerTube - dSaa1InnerTube, rOuSaa1InnerTube),
602 kMedSteelSh);
603
604///////////////////////////////////
605// SAA1 Outer Shape //
606// Drawing ALIP2A__0107 //
607///////////////////////////////////
608 // Total length
609 Float_t dzSaa1 = 659.2;
610 //
611 TGeoPcon* shSaa1M = new TGeoPcon(0., 360., 20);
612 Float_t kSec = 0.01; // security distance to avoid trivial extrusions
613 Float_t rmin = rInSaa1InnerTube - dSaa1InnerTube - kSec;
614 rmax = rOuSaa1InnerTube - dSaa1InnerTube - kSec;
615 z = 0.;
616 shSaa1M->DefineSection( 0, z, rmin, rOuSaa1WPipeF1);
617 z += dzSaa1WPipeF1;
618 shSaa1M->DefineSection( 1, z, rmin, rOuSaa1WPipeF1);
619 shSaa1M->DefineSection( 2, z, 0., rOuSaa1WPipeF1);
620 z += dzSaa1WPipeF11;
621 shSaa1M->DefineSection( 3, z, 0., rOuSaa1WPipeF1);
622 shSaa1M->DefineSection( 4, z, 0., rOuSaa1StEnv1);
623 z = zSaa1WCone;
624 shSaa1M->DefineSection( 5, z, 0., rOuSaa1StEnv1);
625 shSaa1M->DefineSection( 6, z, 0., rOuSaa1WCone1);
626 z += dzSaa1WCone;
627 shSaa1M->DefineSection( 7, z, 0., rOuSaa1WCone2);
628 shSaa1M->DefineSection( 8, z, 0., rOuSaa1StEnv1);
629 z = zSaa1StEnv[0] - dSt + zSaa1StEnvS;
630 shSaa1M->DefineSection( 9, z, 0., rOuSaa1StEnv1);
631 shSaa1M->DefineSection(10, z, 0., rOuSaa1StEnv2);
632 z += (zSaa1StEnv[1] + dSt);
633 shSaa1M->DefineSection(11, z, 0., rOuSaa1StEnv3);
634 z += (zSaa1StEnv[2] - dSt);
635 shSaa1M->DefineSection(12, z, 0., rOuSaa1StEnv3);
636 shSaa1M->DefineSection(13, z, 0., rOuSaa1StEnv4);
637
638 z += (zSaa1StEnv[3] - dSt + dzSaa1PbCompF1 + dzSaa1PbCompF2 - dzSaa1PbComp4);
639 Float_t rmaxSaa1 = shSaa1M->GetRmax(13) + (z - shSaa1M->GetZ(13)) * TMath::Tan(1.6 * kDegRad);
640
641 shSaa1M->DefineSection(14, z, 0., rmaxSaa1);
642 shSaa1M->DefineSection(15, z, rmax, rmaxSaa1);
643 z = zSaa1StRing;
644 shSaa1M->DefineSection(16, z, rmax, rOuSaa1String);
645 z += dzSaa1PbCompF1;
646 shSaa1M->DefineSection(17, z, rmax, rOuSaa1String);
647 shSaa1M->DefineSection(18, z, rmax, rOuSaa1PbCompF3);
648 z += dzSaa1PbCompF2;
649 shSaa1M->DefineSection(19, z, rmax, rOuSaa1PbCompF3);
650
651//
652// Inner 1.69deg line
653 for (Int_t i = 2; i < 15; i++) {
654 Double_t z = shSaa1M->GetZ(i);
655 Double_t r2 = shSaa1M->GetRmax(i);
656 Double_t r1 = rmin + (z - 0.9) * TMath::Tan(1.69 / 2. * kDegRad) - kSec;
657 shSaa1M->DefineSection(i, z, r1, r2);
658 }
659
660 TGeoVolume* voSaa1M = new TGeoVolume("YSAA1M", shSaa1M, kMedAir);
661
662
663///////////////////////////////////
664// //
665// Recess Station 2 //
666// Drawing ALIP2A__0260 //
667///////////////////////////////////
668///////////////////////////////////
669// SAA1 W-Ring 1 //
670// Drawing ALIP2A__0217 //
671///////////////////////////////////
672 Float_t saa1Wring1Width = 5.85;
673 TGeoPcon* shSaa1Wring1 = new TGeoPcon(0., 360., 2);
674 shSaa1Wring1->DefineSection(0, 0.00 , 20.30, 23.175);
675 shSaa1Wring1->DefineSection(1, saa1Wring1Width, 20.30, 23.400);
676 TGeoVolume* voSaa1Wring1 = new TGeoVolume("YSAA1_WRING1", shSaa1Wring1, kMedNiW);
677
678///////////////////////////////////
679// SAA1 W-Ring 2 //
680// Drawing ALIP2A__0055 //
681///////////////////////////////////
682 Float_t saa1Wring2Rinner = 20.30;
683 Float_t saa1Wring2Router = 23.40;
684 Float_t saa1Wring2HWidth = 3.75;
685 Float_t saa1Wring2Cutoffx = 4.45;
686 Float_t saa1Wring2Cutoffy = 4.45;
687 TGeoTubeSeg* shSaa1Wring2a = new TGeoTubeSeg(saa1Wring2Rinner, saa1Wring2Router, saa1Wring2HWidth, 0., 90.);
688 shSaa1Wring2a->SetName("shSaa1Wring2a");
689 TGeoBBox* shSaa1Wring2b = new TGeoBBox(saa1Wring2Router / 2., saa1Wring2Router / 2., saa1Wring2HWidth);
690 shSaa1Wring2b->SetName("shSaa1Wring2b");
691 TGeoTranslation* trSaa1Wring2b
692 = new TGeoTranslation("trSaa1Wring2b", saa1Wring2Router / 2. + saa1Wring2Cutoffx, saa1Wring2Router / 2. + saa1Wring2Cutoffy, 0.);
693 trSaa1Wring2b->RegisterYourself();
694 TGeoCompositeShape* shSaa1Wring2 = new TGeoCompositeShape("shSaa1Wring2", "(shSaa1Wring2a)*(shSaa1Wring2b:trSaa1Wring2b)");
695 TGeoVolume* voSaa1Wring2 = new TGeoVolume("YSAA1_WRING2", shSaa1Wring2, kMedNiW);
696
697///////////////////////////////////
698// SAA1 W-Ring 3 //
699// Drawing ALIP2A__0216 //
700///////////////////////////////////
701
702 Float_t saa1Wring3Rinner = 20.30;
703 Float_t saa1Wring3Router = 23.40;
704 Float_t saa1Wring3HWidth = 3.75;
705 Float_t saa1Wring3Cutoffx = 4.50;
706 Float_t saa1Wring3Cutoffy = 4.40;
707 TGeoTubeSeg* shSaa1Wring3a = new TGeoTubeSeg(saa1Wring3Rinner, saa1Wring3Router, saa1Wring3HWidth, 0., 90.);
708 shSaa1Wring3a->SetName("shSaa1Wring3a");
709 TGeoBBox* shSaa1Wring3b = new TGeoBBox(saa1Wring3Router / 2., saa1Wring3Router / 2., saa1Wring3HWidth);
710 shSaa1Wring3b->SetName("shSaa1Wring3b");
711 TGeoTranslation* trSaa1Wring3b
712 = new TGeoTranslation("trSaa1Wring3b", saa1Wring3Router / 2. + saa1Wring3Cutoffx, saa1Wring3Router / 2. + saa1Wring3Cutoffy, 0.);
713 trSaa1Wring3b->RegisterYourself();
714 TGeoCompositeShape* shSaa1Wring3 = new TGeoCompositeShape("shSaa1Wring3", "(shSaa1Wring3a)*(shSaa1Wring3b:trSaa1Wring3b)");
715 TGeoVolume* voSaa1Wring3 = new TGeoVolume("YSAA1_WRING3", shSaa1Wring3, kMedNiW);
716
717///////////////////////////////////
718// SAA1 W-Ring 4 //
719// Drawing ALIP2A__0215 //
720///////////////////////////////////
721 Float_t saa1Wring4Width = 5.85;
722 TGeoPcon* shSaa1Wring4 = new TGeoPcon(0., 360., 5);
723 shSaa1Wring4->DefineSection(0, 0.00, 20.30, 23.40);
724 shSaa1Wring4->DefineSection(1, 1.00, 20.30, 23.40);
725 shSaa1Wring4->DefineSection(2, 1.00, 20.30, 24.50);
726 shSaa1Wring4->DefineSection(3, 4.85, 20.30, 24.80);
727 shSaa1Wring4->DefineSection(4, 5.85, 24.10, 24.80);
728 TGeoVolume* voSaa1Wring4 = new TGeoVolume("YSAA1_WRING4", shSaa1Wring4, kMedNiW);
729
730///////////////////////////////////
731// SAA1 W-Ring 5 //
732// Drawing ALIP2A__0218 //
733///////////////////////////////////
734 Float_t saa1Wring5Rinner = 20.30;
735 Float_t saa1Wring5Router = 23.40;
736 Float_t saa1Wring5HWidth = 0.85;
737 TGeoVolume* voSaa1Wring5 = new TGeoVolume("YSAA1_WRING5",
738 new TGeoTube(saa1Wring5Rinner, saa1Wring5Router, saa1Wring5HWidth), kMedNiW);
739//
740// Position the rings in the assembly
741//
742 TGeoVolumeAssembly* asSaa1ExtraShield = new TGeoVolumeAssembly("YSAA1ExtraShield");
743// Distance between rings
744 Float_t saa1DWrings = 2.3;
745//
746 dz = - (saa1Wring1Width + 6. * saa1Wring2HWidth + 2. * saa1Wring3HWidth + saa1Wring4Width + 2. * saa1Wring5HWidth + 2. * saa1DWrings) / 2.;
747 asSaa1ExtraShield->AddNode(voSaa1Wring1, 1, new TGeoTranslation(0., 0., dz));
748 dz += saa1Wring1Width;
749 dz += saa1Wring2HWidth;
750 asSaa1ExtraShield->AddNode(voSaa1Wring2, 1, new TGeoCombiTrans(0., 0., dz, rot000));
751 asSaa1ExtraShield->AddNode(voSaa1Wring2, 2, new TGeoCombiTrans(0., 0., dz, rot180));
752 dz += saa1Wring2HWidth;
753 dz += saa1DWrings;
754 dz += saa1Wring2HWidth;
755 asSaa1ExtraShield->AddNode(voSaa1Wring2, 3, new TGeoCombiTrans(0., 0., dz, rot090));
756 asSaa1ExtraShield->AddNode(voSaa1Wring2, 4, new TGeoCombiTrans(0., 0., dz, rot270));
757 dz += saa1Wring2HWidth;
758 dz += saa1Wring5HWidth;
759 asSaa1ExtraShield->AddNode(voSaa1Wring5, 1, new TGeoTranslation(0., 0., dz));
760 dz += saa1Wring5HWidth;
761 dz += saa1Wring2HWidth;
762 asSaa1ExtraShield->AddNode(voSaa1Wring2, 5, new TGeoCombiTrans(0., 0., dz, rot000));
763 asSaa1ExtraShield->AddNode(voSaa1Wring2, 6, new TGeoCombiTrans(0., 0., dz, rot180));
764 dz += saa1Wring2HWidth;
765 dz += saa1DWrings;
766 dz += saa1Wring3HWidth;
767 asSaa1ExtraShield->AddNode(voSaa1Wring3, 1, new TGeoCombiTrans(0., 0., dz, rot090));
768 asSaa1ExtraShield->AddNode(voSaa1Wring3, 2, new TGeoCombiTrans(0., 0., dz, rot270));
769 dz += saa1Wring3HWidth;
770 asSaa1ExtraShield->AddNode(voSaa1Wring4, 1, new TGeoTranslation(0., 0., dz));
771 dz += saa1Wring4Width;
772 const Float_t saa1ExtraShieldL = 48;
773//
774// Assemble SAA1
775 voSaa1M->AddNode(voSaa1StEnv, 1, vec0);
776 voSaa1M->AddNode(voSaa1WPipe, 1, vec0);
777 voSaa1M->AddNode(voSaa1PbComp, 1, vec0);
778 voSaa1M->AddNode(voSaa1WCone, 1, vec0);
779 voSaa1M->AddNode(voSaa1StRing, 1, vec0);
780 voSaa1M->AddNode(voSaa1InnerTube, 1, new TGeoTranslation(0., 0., dzSaa1InnerTube + 0.9));
781 TGeoVolumeAssembly* voSaa1 = new TGeoVolumeAssembly("YSAA1");
782 voSaa1->AddNode(voSaa1M, 1, vec0);
783
784///////////////////////////////////////
785// SAA1/SAA2 Pb Joint //
786// Drawing ALIP2A__0081 //
787///////////////////////////////////////
788//
789// Outer radius
790 Float_t rOuSaa1Saa2 = 70.0/2.;
791// Flange SAA1 side
792 Float_t dzSaa1Saa2F1 = 3.;
793 Float_t rInSaa1Saa2F1 = 58.5/2.;
794// 1st Central Section
795 Float_t dzSaa1Saa2C1 = 19.3;
796 Float_t rInSaa1Saa2C1 = 42.8/2.;
797// Transition Region
798 Float_t dzSaa1Saa2T = 3.3;
799// 1st Central Section
800 Float_t dzSaa1Saa2C2 = 6.2;
801 Float_t rInSaa1Saa2C2 = 36.2/2.;
802// Flange SAA2 side
803 Float_t dzSaa1Saa2F2 = 3.1;
804 Float_t rInSaa1Saa2F2 = 54.1/2.;
805// Total length
806 Float_t dzSaa1Saa2 = 34.9;
807
808
809 TGeoPcon* shSaa1Saa2Pb = new TGeoPcon(0., 360., 8);
810 z = 0.;
811// Flange SAA1 side
812 shSaa1Saa2Pb->DefineSection( 0, z, rInSaa1Saa2F1, rOuSaa1Saa2);
813 z += dzSaa1Saa2F1;
814 shSaa1Saa2Pb->DefineSection( 1, z, rInSaa1Saa2F1, rOuSaa1Saa2);
815 shSaa1Saa2Pb->DefineSection( 2, z, rInSaa1Saa2C1, rOuSaa1Saa2);
816// Central region 1
817 z += dzSaa1Saa2C1;
818 shSaa1Saa2Pb->DefineSection( 3, z, rInSaa1Saa2C1, rOuSaa1Saa2);
819// 45 deg transition
820 z += dzSaa1Saa2T;
821 shSaa1Saa2Pb->DefineSection( 4, z, rInSaa1Saa2C2, rOuSaa1Saa2);
822 z += dzSaa1Saa2C2;
823 shSaa1Saa2Pb->DefineSection( 5, z, rInSaa1Saa2C2, rOuSaa1Saa2);
824 shSaa1Saa2Pb->DefineSection( 6, z, rInSaa1Saa2F2, rOuSaa1Saa2);
825 z += dzSaa1Saa2F2;
826 shSaa1Saa2Pb->DefineSection( 7, z, rInSaa1Saa2F2, rOuSaa1Saa2);
827 TGeoVolume* voSaa1Saa2Pb = new TGeoVolume("YSAA1SAA2Pb", shSaa1Saa2Pb, kMedPb);
828//
829// Mother volume and outer steel envelope
830 Float_t rOuSaa1Saa2Steel = 36.9;
831
832 TGeoPcon* shSaa1Saa2 = MakeShapeFromTemplate(shSaa1Saa2Pb, 0., rOuSaa1Saa2Steel-rOuSaa1Saa2);
833 TGeoVolume* voSaa1Saa2 = new TGeoVolume("YSAA1SAA2", shSaa1Saa2, kMedSteel);
834 voSaa1Saa2->AddNode(voSaa1Saa2Pb, 1, vec0);
835//
836// Inner region with higher transport cuts
837//
838 TGeoPcon* shSaa1Saa2I = MakeShapeFromTemplate(shSaa1Saa2Pb, 0., -3.);
839 TGeoVolume* voSaa1Saa2I = new TGeoVolume("YSAA1_SAA2I", shSaa1Saa2I, kMedPbSh);
840 voSaa1Saa2Pb->AddNode(voSaa1Saa2I, 1, vec0);
841
842
843
844///////////////////////////////////////
845// SAA2 //
846///////////////////////////////////////
847
848
849///////////////////////////////////
850// SAA2 Steel Envelope //
851// Drawing ALIP2A__0041 //
852///////////////////////////////////
853 dSt = 4.; // Thickness of steel envelope
854 // Length of the first section
855 Float_t dzSaa2StEnv1 = 163.15;
856 Float_t rInSaa2StEnv1 = 65.8/2.;
857 // Length of the second section
858 Float_t dzSaa2StEnv2 = 340.35;
859 Float_t rInSaa2StEnv2 = 87.2/2.;
860 // Rel. starting position
861 Float_t zSaa2StEnv = 3.;
862
863 TGeoPcon* shSaa2StEnv = new TGeoPcon(0., 360., 6);
864 // First Section
865 z = zSaa2StEnv;
866 shSaa2StEnv->DefineSection( 0, z, rInSaa2StEnv1, rInSaa2StEnv1 + dSt);
867 z += dzSaa2StEnv1;
868 shSaa2StEnv->DefineSection( 1, z, rInSaa2StEnv1, rInSaa2StEnv1 + dSt);
869 // Transition region
870 shSaa2StEnv->DefineSection( 2, z, rInSaa2StEnv1, rInSaa2StEnv2 + dSt);
871 z += dSt;
872 shSaa2StEnv->DefineSection( 3, z, rInSaa2StEnv1, rInSaa2StEnv2 + dSt);
873 // Second section
874 shSaa2StEnv->DefineSection( 4, z, rInSaa2StEnv2, rInSaa2StEnv2 + dSt);
875 z += dzSaa2StEnv2;
876 shSaa2StEnv->DefineSection( 5, z, rInSaa2StEnv2, rInSaa2StEnv2 + dSt);
877
878 TGeoVolume* voSaa2StEnv = new TGeoVolume("YSAA2_SteelEnvelope", shSaa2StEnv, kMedSteel);
879
880
881///////////////////////////////////
882// SAA2 Pb Ring //
883// Drawing ALIP2A__0080 //
884// Drawing ALIP2A__0111 //
885///////////////////////////////////
886//
887// Rel. position in z
888 Float_t zSaa2PbRing = 35.25;
889// Length
890 Float_t dzSaa2PbRing = 65.90;
891// Inner radius
892 Float_t rInSaa2PbRing = 37.00;
893// Outer radius at front
894 Float_t rOuSaa2PbRingF = 42.74;
895// Outer Rradius at rear
896 Float_t rOuSaa2PbRingR = 44.58;
897
898 TGeoPcon* shSaa2PbRing = new TGeoPcon(0., 360., 2);
899 z = zSaa2PbRing;
900 shSaa2PbRing->DefineSection(0, z, rInSaa2PbRing, rOuSaa2PbRingF);
901 z += dzSaa2PbRing;
902 shSaa2PbRing->DefineSection(1, z, rInSaa2PbRing, rOuSaa2PbRingR);
903
904 TGeoVolume* voSaa2PbRing = new TGeoVolume("YSAA2_PbRing", shSaa2PbRing, kMedPb);
905
906
907///////////////////////////////////
908// SAA2 Pb Components //
909// Drawing ALIP2A__0079 //
910///////////////////////////////////
911 tanAlpha = TMath::Tan(1.89 / 2. * kDegRad);
912 TGeoPcon* shSaa2PbComp = new TGeoPcon(0., 360., 16);
913 // Total length
914 Float_t dzSaa2PbComp = 512.;
915 // Length of 1st bellow recess
916 Float_t dzSaa2PbCompB1 = 24.;
917 // Length of 2nd bellow recess
918 Float_t dzSaa2PbCompB2 = 27.;
919 // Flange on the SAA1 side Detail A
920 // 1st Step
921 Float_t dzSaa2PbCompA1 = 1.5;
922 Float_t rInSaa2PbCompA1 = 43.0/2.;
923 Float_t rOuSaa2PbCompA1 = 53.0/2.;
924 // 2nd Step
925 Float_t dzSaa2PbCompA2 = 1.5;
926 Float_t rInSaa2PbCompA2 = 36.8/2.;
927 Float_t rOuSaa2PbCompA2 = rOuSaa2PbCompA1;
928 // Straight section
929 Float_t dzSaa2PbCompA3 = 21.0;
930 Float_t rInSaa2PbCompA3 = rInSaa2PbCompA2;
931 Float_t rOuSaa2PbCompA3 = 65.2/2.;
932 //
933 // 1st Section (outer straight, inner 1.89/2. deg opening cone)
934 // Length
935 Float_t dzSaa2PbComp1 = 146.15;
936 // Inner radius at the end
937 Float_t rInSaa2PbComp1 = rInSaa2PbCompA3 + dzSaa2PbComp1 * tanAlpha;
938 // Outer radius
939 Float_t rOuSaa2PbComp1 = rOuSaa2PbCompA3;
940 //
941 // 2nd Section (outer straight, inner 1.89/2. deg opening cone)
942 // Length
943 Float_t dzSaa2PbComp2 = (dzSaa2PbComp - dzSaa2PbComp1 - dzSaa2PbCompB1 - dzSaa2PbCompB2);
944 // Inner radius at the end
945 Float_t rInSaa2PbComp2 = rInSaa2PbComp1 + dzSaa2PbComp2 * tanAlpha;
946 // Outer radius
947 Float_t rOuSaa2PbComp2 = 86.6/2.;
948 //
949 // Flange on the SAA3 side (Detail E)
950 //
951 // Straight Section
952 // Length dzSaa2PbCompB2 - 8.8 = 27 - 8.8 = 18.2
953 Float_t dzSaa2PbCompE1 = 18.2;
954 Float_t rInSaa2PbCompE1 = 52.0/2.;
955 Float_t rOuSaa2PbCompE1 = 86.6/2.;
956 // 45 deg transition
957 Float_t dzSaa2PbCompE2 = 2.7;
958 // 1st Step
959 Float_t dzSaa2PbCompE3 = 0.6;
960 Float_t rInSaa2PbCompE3 = 52.0/2.+ dzSaa2PbCompE2;
961 Float_t rOuSaa2PbCompE3 = 83.0/2.;
962 // 2nd Step
963 Float_t dzSaa2PbCompE4 = 4.0;
964 Float_t rOuSaa2PbCompE4 = 61.6/2.;
965 // end
966 Float_t dzSaa2PbCompE5 = 1.5;
967
968
969 //
970 // Flange on SAA1 side (Detail A)
971 z = 0.;
972 // 1st Step
973 shSaa2PbComp->DefineSection( 0, z, rInSaa2PbCompA1, rOuSaa2PbCompA1);
974 z += dzSaa2PbCompA1;
975 shSaa2PbComp->DefineSection( 1, z, rInSaa2PbCompA1, rOuSaa2PbCompA1);
976 shSaa2PbComp->DefineSection( 2, z, rInSaa2PbCompA2, rOuSaa2PbCompA2);
977 // 2nd Step
978 z += dzSaa2PbCompA2;
979 shSaa2PbComp->DefineSection( 3, z, rInSaa2PbCompA2, rOuSaa2PbCompA2);
980 shSaa2PbComp->DefineSection( 4, z, rInSaa2PbCompA3, rOuSaa2PbCompA3);
981 // straight section
982 z += dzSaa2PbCompA3;
983 shSaa2PbComp->DefineSection( 5, z, rInSaa2PbCompA3, rOuSaa2PbCompA3);
984 //
985 // Section 1
986 z += dzSaa2PbComp1;
987 shSaa2PbComp->DefineSection( 6, z, rInSaa2PbComp1, rOuSaa2PbComp1);
988 //
989 // Section 2
990 shSaa2PbComp->DefineSection( 7, z, rInSaa2PbComp2, rOuSaa2PbComp2);
991 z += dzSaa2PbComp2;
992 shSaa2PbComp->DefineSection( 8, z, rInSaa2PbComp2, rOuSaa2PbComp2);
993 //
994 // Flange SAA3 side (Detail E)
995 z += dzSaa2PbCompE1;
996 shSaa2PbComp->DefineSection( 9, z, rInSaa2PbCompE1, rOuSaa2PbCompE1);
997 // 45 deg transition
998 z += dzSaa2PbCompE2;
999 shSaa2PbComp->DefineSection( 10, z, rInSaa2PbCompE3, rOuSaa2PbCompE1);
1000 // 1st step
1001 z += dzSaa2PbCompE3;
1002 shSaa2PbComp->DefineSection( 11, z, rInSaa2PbCompE3, rOuSaa2PbCompE1);
1003 shSaa2PbComp->DefineSection( 12, z, rInSaa2PbCompE3, rOuSaa2PbCompE3);
1004 // 2nd step
1005 z += dzSaa2PbCompE4;
1006 shSaa2PbComp->DefineSection( 13, z, rInSaa2PbCompE3, rOuSaa2PbCompE3);
1007 shSaa2PbComp->DefineSection( 14, z, rInSaa2PbCompE3, rOuSaa2PbCompE4);
1008 // end
1009 z += dzSaa2PbCompE5;
1010 shSaa2PbComp->DefineSection( 15, z, rInSaa2PbCompE3, rOuSaa2PbCompE4);
1011
1012 TGeoVolume* voSaa2PbComp = new TGeoVolume("YSAA2_PbComp", shSaa2PbComp, kMedPb);
1013
1014
1015///////////////////////////////////
1016// SAA2 Inner Tube //
1017// Drawing ALIP2A__0083 //
1018///////////////////////////////////
1019//
1020//
1021//
1022// Length of saa2: 512.0 cm
1023// Length of inner tube: 501.7 cm
1024// Lenth of bellow recess: 10.3 cm ( 1.5 + 8.8)
1025// Radius at entrance 36.8/2, d = 0.1
1026// Radius at exit 52.0/2, d = 0.1
1027//
1028 const Float_t kSaa2InnerTubeL = 501.7; // Length of the tube
1029 const Float_t kSaa2InnerTubeRmin = 36.6/2.; // Radius at entrance
1030 const Float_t kSaa2InnerTubeRmax = 51.8/2.; // Radius at exit
1031 const Float_t kSaa2InnerTubeD = 0.2 ; // Thickness
1032 TGeoPcon* shSaa2InnerTube = new TGeoPcon(0., 360., 4);
1033 z = 0.;
1034 shSaa2InnerTube->DefineSection( 0, z, kSaa2InnerTubeRmin - kSaa2InnerTubeD, kSaa2InnerTubeRmin);
1035 z += dzSaa2PbCompA2 + dzSaa2PbCompA3;
1036 shSaa2InnerTube->DefineSection( 1, z, kSaa2InnerTubeRmin - kSaa2InnerTubeD, kSaa2InnerTubeRmin);
1037 z = kSaa2InnerTubeL - dzSaa2PbCompE1;
1038 shSaa2InnerTube->DefineSection( 2, z, kSaa2InnerTubeRmax - kSaa2InnerTubeD, kSaa2InnerTubeRmax);
1039 z = kSaa2InnerTubeL;
1040 shSaa2InnerTube->DefineSection( 3, z, kSaa2InnerTubeRmax - kSaa2InnerTubeD, kSaa2InnerTubeRmax);
1041 TGeoVolume* voSaa2InnerTube = new TGeoVolume("YSAA2_InnerTube", shSaa2InnerTube, kMedSteel);
1042
1043///////////////////////////////////
1044// SAA2 Steel Ring //
1045// Drawing ALIP2A__0042 //
1046///////////////////////////////////
1047 // HalfWidth
1048 Float_t dzSaa2SteelRing = 2.;
1049 TGeoTube* shSaa2SteelRing = new TGeoTube(41.6, 47.6, dzSaa2SteelRing);
1050 TGeoVolume* voSaa2SteelRing = new TGeoVolume("YSAA2_SteelRing", shSaa2SteelRing, kMedSteel);
1051
1052///////////////////////////////////
1053// SAA2 Outer Shape //
1054// Drawing ALIP2A__0108 //
1055///////////////////////////////////
1056
1057 TGeoPcon* shSaa2 = new TGeoPcon(0., 360., 16);
1058 kSec = 0.02; // security distance to avoid trivial extrusions
1059 rmin = kSaa2InnerTubeRmin - kSaa2InnerTubeD - kSec;
1060 rmax = kSaa2InnerTubeRmax - kSaa2InnerTubeD - kSec;
1061 // Flange SAA1 side
1062 z = 0.;
1063 shSaa2->DefineSection( 0, z, rmin , rOuSaa2PbCompA1);
1064 z += dzSaa2PbCompA1 + dzSaa2PbCompA2;
1065 shSaa2->DefineSection( 1, z, rmin , rOuSaa2PbCompA1);
1066 shSaa2->DefineSection( 2, z, rmin , rInSaa2StEnv1 + dSt);
1067 z += dzSaa2PbCompA3;
1068 shSaa2->DefineSection( 3, z, rmin , rInSaa2StEnv1 + dSt);
1069 z = zSaa2PbRing;
1070 shSaa2->DefineSection( 4, z, 0. , rInSaa2StEnv1 + dSt);
1071 shSaa2->DefineSection( 5, z, 0. , rOuSaa2PbRingF);
1072 z += dzSaa2PbRing;
1073 shSaa2->DefineSection( 6, z, 0. , rOuSaa2PbRingR);
1074 shSaa2->DefineSection( 7, z, 0. , rInSaa2StEnv1 + dSt);
1075 z = dzSaa2PbCompA1 + dzSaa2PbCompA2 + dzSaa2StEnv1;
1076 shSaa2->DefineSection( 8, z, 0. , rInSaa2StEnv1 + dSt);
1077 shSaa2->DefineSection( 9, z, 0. , rInSaa2StEnv2 + dSt);
1078 z = dzSaa2PbComp - dzSaa2PbCompB2;
1079 shSaa2->DefineSection(10, z, rmax , rInSaa2StEnv2 + dSt);
1080 z += dzSaa2PbCompE1;
1081 shSaa2->DefineSection(11, z, rmax , rInSaa2StEnv2 + dSt);
1082 z += dzSaa2PbCompE2;
1083 shSaa2->DefineSection(12, z, rInSaa2PbCompE3, rInSaa2StEnv2 + dSt);
1084 z += (dzSaa2PbCompE3 + dzSaa2PbCompE4);
1085 shSaa2->DefineSection(13, z, rInSaa2PbCompE3, rInSaa2StEnv2 + dSt);
1086 shSaa2->DefineSection(14, z, rInSaa2PbCompE3, rOuSaa2PbCompE4);
1087 z += dzSaa2PbCompE5;
1088 shSaa2->DefineSection(15, z, rInSaa2PbCompE3, rOuSaa2PbCompE4);
1089
1090 TGeoVolume* voSaa2 = new TGeoVolume("YSAA2", shSaa2, kMedAir);
1091// Inner 1.89/2 deg line
1092 Double_t zref = dzSaa2PbCompA1 + dzSaa2PbCompA2 + dzSaa2PbCompA3;
1093 for (Int_t i = 4; i < 10; i++) {
1094 Double_t z = shSaa2->GetZ(i);
1095 Double_t r2 = shSaa2->GetRmax(i);
1096 Double_t r1 = rmin + (z - zref) * TMath::Tan(1.89 / 2. * kDegRad) - kSec;
1097 shSaa2->DefineSection(i, z, r1, r2);
1098 }
1099
1100//
1101// Assemble SAA2
1102 voSaa2->AddNode(voSaa2StEnv, 1, vec0);
1103 voSaa2->AddNode(voSaa2PbRing, 1, vec0);
1104 voSaa2->AddNode(voSaa2PbComp, 1, vec0);
1105 voSaa2->AddNode(voSaa2InnerTube, 1, new TGeoTranslation(0., 0., dzSaa2PbCompA1));
1106 z = (dzSaa2PbComp - dzSaa2PbCompE4 - dzSaa2PbCompE5) + dzSaa2SteelRing;
1107 voSaa2->AddNode(voSaa2SteelRing, 1, new TGeoTranslation(0., 0., z));
1108
1109
1110///////////////////////////////////////
1111// SAA3 //
1112///////////////////////////////////////
1113//
1114//
1115// This is a study performed by S. Maridor
1116// The SAA3 has not yet been designed !!!!!!!!
1117//
1118///////////////////////////////////
1119// SAA3 Outer Shape //
1120// Drawing ALIP2A__0xxx //
1121///////////////////////////////////
1122
1123 TGeoVolumeAssembly* voSaa3 = new TGeoVolumeAssembly("YSAA3");
1124
1125///////////////////////////////////
1126// SAA3 Steel Components //
1127// Drawing ALIP2A__0xxx //
1128///////////////////////////////////
1129// Block
1130 TGeoBBox* shSaa3SteelBlockO = new TGeoBBox(220./2., 80./2., 100./2.);
1131 shSaa3SteelBlockO->SetName("Saa3SteelBlockO");
1132
1133 TGeoPcon* shSaa3InnerRegion = new TGeoPcon(0., 360., 6);
1134 shSaa3InnerRegion->DefineSection( 0, -52.0, 0., 56.6/2.);
1135 shSaa3InnerRegion->DefineSection( 1, -45.0, 0., 56.6/2.);
1136 shSaa3InnerRegion->DefineSection( 2, -42.0, 0., 50.6/2.);
1137 shSaa3InnerRegion->DefineSection( 3, -30.0, 0., 50.6/2.);
1138 shSaa3InnerRegion->DefineSection( 4, 30.5, 0., 16.8/2.);
1139 shSaa3InnerRegion->DefineSection( 5, 52.0, 0., 16.8/2.);
1140 shSaa3InnerRegion->SetName("Saa3InnerRegion");
1141
1142 TGeoCompositeShape* shSaa3SteelBlock = new TGeoCompositeShape("Saa3SteelBlock", "Saa3SteelBlockO-Saa3InnerRegion");
1143 TGeoVolume* voSaa3SteelBlock = new TGeoVolume("YSAA3SteelBlock", shSaa3SteelBlock, kMedSteel);
1144
1145
1146 voSaa3->AddNode(voSaa3SteelBlock, 1, vec0);
1147// Plate 1: 220 cm x 100 cm x 10 cm (x 1)
1148 TGeoBBox* shSaa3SteelPlate1 = new TGeoBBox(220./2., 10./2., 100./2.);
1149 TGeoVolume* voSaa3SteelPlate1 = new TGeoVolume("YSAA3SteelPlate1", shSaa3SteelPlate1, kMedSteel);
1150 voSaa3->AddNode(voSaa3SteelPlate1, 1, new TGeoTranslation(0., -80./2. - 10./2., 0.));
1151// Plate 2: 200 cm x 100 cm x 10 cm (x 6)
1152 TGeoBBox* shSaa3SteelPlate2 = new TGeoBBox(200./2., 60./2., 100./2.);
1153 TGeoVolume* voSaa3SteelPlate2 = new TGeoVolume("YSAA3SteelPlate2", shSaa3SteelPlate2, kMedSteel);
1154 voSaa3->AddNode(voSaa3SteelPlate2, 1, new TGeoTranslation(0., -80./2. - 10. - 60./2., 0.));
1155// Plate 3: 200 cm x 100 cm x 10 cm (x 4)
1156 TGeoBBox* shSaa3SteelPlate3 = new TGeoBBox(200./2., 40./2., 100./2.);
1157 TGeoVolume* voSaa3SteelPlate3 = new TGeoVolume("YSAA3SteelPlate3", shSaa3SteelPlate3, kMedSteel);
1158 voSaa3->AddNode(voSaa3SteelPlate3, 1, new TGeoTranslation(0., +80./2. + 40/2., 0.));
1159// Plate 4: 180 cm x 100 cm x 10 cm (x 1)
1160 TGeoBBox* shSaa3SteelPlate4 = new TGeoBBox(180./2., 10./2., 100./2.);
1161 TGeoVolume* voSaa3SteelPlate4 = new TGeoVolume("YSAA3SteelPlate4", shSaa3SteelPlate4, kMedSteel);
1162 voSaa3->AddNode(voSaa3SteelPlate4, 1, new TGeoTranslation(0., +80./2. + 40. + 10/2., 0.));
1163// Plate 5: 150 cm x 100 cm x 10 cm (x 1)
1164 TGeoBBox* shSaa3SteelPlate5 = new TGeoBBox(150./2., 10./2., 100./2.);
1165 TGeoVolume* voSaa3SteelPlate5 = new TGeoVolume("YSAA3SteelPlate5", shSaa3SteelPlate5, kMedSteel);
1166 voSaa3->AddNode(voSaa3SteelPlate5, 1, new TGeoTranslation(0., +80./2. + 50. + 10/2., 0.));
1167// Plate 6: 100 cm x 100 cm x 10 cm (x 1)
1168 TGeoBBox* shSaa3SteelPlate6 = new TGeoBBox(100./2., 10./2., 100./2.);
1169 TGeoVolume* voSaa3SteelPlate6 = new TGeoVolume("YSAA3SteelPlate6", shSaa3SteelPlate6, kMedSteel);
1170 voSaa3->AddNode(voSaa3SteelPlate6, 1, new TGeoTranslation(0., +80./2. + 60. + 10/2., 0.));
1171
1172///////////////////////////////////
1173// SAA3 Concrete Piece //
1174// Drawing ALIP2A__0xxx //
1175///////////////////////////////////
1176 TGeoPcon* shSaa3ConcPiece = new TGeoPcon(0., 360., 6);
1177 shSaa3ConcPiece->DefineSection( 0, 0.0, 57.4/2., 62./2.);
1178 shSaa3ConcPiece->DefineSection( 1, 5.0, 57.4/2., 62./2.);
1179 shSaa3ConcPiece->DefineSection( 2, 8.0, 51.4/2., 62./2.);
1180 shSaa3ConcPiece->DefineSection( 3, 20.0, 51.4/2., 62./2.);
1181 shSaa3ConcPiece->DefineSection( 4, 80.5, 17.6/2., 62./2.);
1182 shSaa3ConcPiece->DefineSection( 5, 100.0, 17.6/2., 62./2.);
1183 TGeoVolume* voSaa3ConcPiece = new TGeoVolume("YSAA2_ConcPiece", shSaa3ConcPiece, kMedConc);
1184 voSaa3SteelBlock->AddNode(voSaa3ConcPiece, 1, new TGeoTranslation(0., 0., -50.));
1185
1186///////////////////////////////////
1187// SAA3 InnerTube //
1188// Drawing ALIP2A__0xxx //
1189///////////////////////////////////
1190 TGeoPcon* shSaa3InnerTube = new TGeoPcon(0., 360., 6);
1191 shSaa3InnerTube->DefineSection( 0, 0.0, 56.6/2., 57.0/2.);
1192 shSaa3InnerTube->DefineSection( 1, 5.0, 56.6/2., 57.0/2.);
1193 shSaa3InnerTube->DefineSection( 2, 8.0, 50.6/2., 51.0/2.);
1194 shSaa3InnerTube->DefineSection( 3, 20.0, 50.6/2., 51.0/2.);
1195 shSaa3InnerTube->DefineSection( 4, 80.5, 16.8/2., 17.2/2.);
1196 shSaa3InnerTube->DefineSection( 5, 100.0, 16.8/2., 17.2/2.);
1197 TGeoVolume* voSaa3InnerTube = new TGeoVolume("YSAA2_InnerTube", shSaa3InnerTube, kMedSteel);
1198 voSaa3SteelBlock->AddNode(voSaa3InnerTube, 1, new TGeoTranslation(0., 0., -50.));
1199
1200///////////////////////////////////
1201// Muon Filter //
1202// Drawing ALIP2A__0105 //
1203///////////////////////////////////
1204 // Half Length
1205 Float_t dzMuonFilter = 60.;
1206
1207 TGeoBBox* shMuonFilterO = new TGeoBBox(550./2., 620./2., dzMuonFilter);
1208 shMuonFilterO->SetName("FilterO");
1209 TGeoTube* shMuonFilterI = new TGeoTube(0., 50., dzMuonFilter);
1210 shMuonFilterI->SetName("FilterI");
1211 TGeoCompositeShape* shMuonFilter = new TGeoCompositeShape("MuonFilter", "FilterO-FilterI");
1212 //
1213 // !!!!! Needs to be inclined
1214 TGeoVolume* voMuonFilter = new TGeoVolume("YMuonFilter", shMuonFilter, kMedSteel);
1215
1216//
1217 TGeoVolumeAssembly* voSaa = new TGeoVolumeAssembly("YSAA");
1218//
1219//
1220//
1221//
1222//
1223// Starting position of the FA Flange/Tail
1224 Float_t ziFaWTail = 499.0;
1225// End of the FA Flange/Tail
1226 Float_t zoFaWTail = ziFaWTail + dzFaWTail;
1227// Starting position of the FA/SAA1 Joint (2.8 cm overlap with tail)
1228 Float_t ozFaSaa1 = 2.8;
1229 Float_t ziFaSaa1 = zoFaWTail - ozFaSaa1;
1230// End of the FA/SAA1 Joint
1231 Float_t zoFaSaa1 = ziFaSaa1 + dzFaSaa1;
1232// Starting position of SAA1 (2.0 cm overlap with joint)
1233 Float_t ozSaa1 = 2.;
1234 Float_t ziSaa1 = zoFaSaa1 - ozSaa1;
1235// End of SAA1
1236 Float_t zoSaa1 = ziSaa1 + dzSaa1;
1237// Starting position of SAA1/SAA2 Joint (1.95 cm overlap with SAA1)
1238 Float_t ziSaa1Saa2 = zoSaa1 - 1.95;
1239// End of SAA1/SAA2 Joint
1240 Float_t zoSaa1Saa2 = ziSaa1Saa2 + dzSaa1Saa2;
1241// Starting position of SAA2 (3.1 cm overlap with the joint)
1242 Float_t ziSaa2 = zoSaa1Saa2 - 3.1;
1243// End of SAA2
1244 Float_t zoSaa2 = ziSaa2 + dzSaa2PbComp;
1245// Position of SAA3
1246 Float_t zcSaa3 = zoSaa2 + 50.;
1247// Position of the Muon Filter
1248 Float_t zcFilter = 1465.9 + dzMuonFilter;
1249
1250 printf("FaSaa1 %f %f \n", ziFaSaa1, zoFaSaa1);
1251 printf("Saa1 %f %f \n", ziSaa1, zoSaa1);
1252 printf("Saa1/Saa2 %f %f \n", ziSaa1Saa2, zoSaa1Saa2);
1253 printf("Saa2 %f %f \n", ziSaa2, zoSaa2);
1254
1255 voSaa->AddNode(voFaWTail, 1, new TGeoTranslation(0., 0., ziFaWTail));
1256 voSaa->AddNode(voFaSaa1, 1, new TGeoTranslation(0., 0., ziFaSaa1));
1257 voSaa->AddNode(voSaa1 , 1, new TGeoTranslation(0., 0., ziSaa1));
1258 voSaa->AddNode(voSaa1Saa2, 1, new TGeoTranslation(0., 0., ziSaa1Saa2));
1259 voSaa->AddNode(voSaa2 , 1, new TGeoTranslation(0., 0., ziSaa2));
1260 voSaa->AddNode(voSaa3, 1, new TGeoTranslation(0., 0., zcSaa3));
1261 voSaa->AddNode(voMuonFilter, 1, new TGeoTranslation(0., 0., zcFilter));
1262
1263 TGeoRotation* rotxz = new TGeoRotation("rotxz", 90., 0., 90., 90., 180., 0.);
1264 top->AddNode(voSaa, 1, new TGeoCombiTrans(0., 0., 0., rotxz));
1265//
1266// Mother volume for muon stations 1+2 and shielding material placed between the quadrants
1267//
1268 // Position of the dipole
1269 Float_t ziDipole = 724.45;
1270
1271 TGeoPcon* shYOUT1 = new TGeoPcon(0., 360., 25);
1272 Float_t eps = 1.e-2;
1273 // FA Tail Section
1274 for (Int_t iz = 0; iz < 9; iz++) {
1275 z = shFaWTail->GetZ(iz+1);
1276 if (iz == 8) z -= ozFaSaa1;
1277 shYOUT1->DefineSection(iz, z + ziFaWTail, shFaWTail->GetRmax(iz+1) + eps, 150.);
1278 }
1279 // FA-SAA1 Joint
1280 z = shYOUT1->GetZ(8);
1281
1282 for (Int_t iz = 9; iz < 17; iz++)
1283 shYOUT1->DefineSection(iz, z + shFaSaa1->GetZ(iz-9), shFaSaa1->GetRmax(iz-9) + eps, 150.);
1284
1285 z = shYOUT1->GetZ(16) - ozSaa1;
1286 // SAA1 - Dipole
1287 for (Int_t iz = 17; iz < 24; iz++)
1288 shYOUT1->DefineSection(iz, z + shSaa1M->GetZ(iz-13), shSaa1M->GetRmax(iz-13) + eps, 150.);
1289 // Distance between dipole and start of SAA1 2deg opening cone
1290 dz = zSaa1StEnv[0] - dSt + zSaa1StEnvS + ziSaa1 - ziDipole;
1291 rOut = rOuSaa1StEnv2 + dz * TMath::Tan(2. * kDegRad);
1292
1293 shYOUT1->DefineSection(24, ziDipole, rOut + eps, 150.);
1294
1295 InvertPcon(shYOUT1);
1296 TGeoVolume* voYOUT1 = new TGeoVolume("YOUT1", shYOUT1, kMedAirMu);
1297
1298 voYOUT1->AddNode(asSaa1ExtraShield, 1, new TGeoCombiTrans(0., 0., - (100.7 + 62.2 + saa1ExtraShieldL / 2. + ziFaWTail), rotxz));
1299 voYOUT1->AddNode(asFaExtraShield, 1, new TGeoCombiTrans(0., 0., - (16.41 + kFaWring2HWidth + ziFaWTail), rotxz));
1300 top->AddNode(voYOUT1, 1, vec0);
1301//
1302// Mother volume for muon stations 4+5 and trigger stations.
1303//
1304 Float_t zoDipole = 1235.55;
1305
1306 TGeoPcon* shYOUT2 = new TGeoPcon(0., 360., 14);
1307 z = zoDipole;
1308 shYOUT2->DefineSection(0, z, rOuSaa1String, 252.);
1309// Start of SAA1-SAA2
1310 z = ziSaa1Saa2;
1311 shYOUT2->DefineSection(1, z, rOuSaa1String, 252.);
1312 shYOUT2->DefineSection(2, z, rOuSaa1Saa2Steel, 252.);
1313// End of SAA1-SAA2
1314 z = ziSaa2;
1315 shYOUT2->DefineSection(3, z, rOuSaa1Saa2Steel, 252.);
1316// SAA2
1317 shYOUT2->DefineSection( 4, z, rInSaa2StEnv1 + dSt, 252.);
1318 z = ziSaa2 + zSaa2PbRing;
1319 shYOUT2->DefineSection( 5, z, rInSaa2StEnv1 + dSt, 252.);
1320// Pb Cone
1321 shYOUT2->DefineSection( 6, z, rOuSaa2PbRingF, 252.);
1322 rmin = rOuSaa2PbRingF + (1380. - z) * TMath::Tan(1.6 * kDegRad);
1323 shYOUT2->DefineSection( 7, 1380., rmin, 252.);
1324 shYOUT2->DefineSection( 8, 1380., rmin, 304.);
1325 z = ziSaa2 + zSaa2PbRing + dzSaa2PbRing;
1326 shYOUT2->DefineSection( 9, z, rOuSaa2PbRingR, 304.);
1327// Straight Sections
1328 shYOUT2->DefineSection(10, z, rInSaa2StEnv1 + dSt, 460.);
1329 z = ziSaa2 + dzSaa2StEnv1;
1330 shYOUT2->DefineSection(11, z, rInSaa2StEnv1 + dSt, 460.);
1331 shYOUT2->DefineSection(12, z, rInSaa2StEnv2 + dSt, 460.);
1332 z += dzSaa2StEnv2;
1333 shYOUT2->DefineSection(13, z, rInSaa2StEnv2 + dSt, 460.);
1334
1335 InvertPcon(shYOUT2);
1336 TGeoVolume* voYOUT2 = new TGeoVolume("YOUT2", shYOUT2, kMedAirMu);
1337 top->AddNode(voYOUT2, 1, vec0);
1338}
1339
1340void AliSHILv3::Init()
1341{
1342 //
1343 // Initialise the muon shield after it has been built
1344 //
1345 Int_t i;
1346 //
1347 if(AliLog::GetGlobalDebugLevel()>0) {
1348 printf("\n%s: ",ClassName());
1349 for(i=0;i<35;i++) printf("*");
1350 printf(" SHILvTGeo_INIT ");
1351 for(i=0;i<35;i++) printf("*");
1352 printf("\n%s: ",ClassName());
1353 //
1354 // Here the SHIL initialisation code (if any!)
1355 for(i=0;i<80;i++) printf("*");
1356 printf("\n");
1357 }
1358}
1359
1360void AliSHILv3::InvertPcon(TGeoPcon* pcon)
1361{
1362//
1363// z -> -z
1364//
1365 Int_t nz = pcon->GetNz();
1366 Double_t* z = new Double_t[nz];
1367 Double_t* rmin = new Double_t[nz];
1368 Double_t* rmax = new Double_t[nz];
1369
1370 Double_t* z0 = pcon->GetZ();
1371 Double_t* rmin0 = pcon->GetRmin();
1372 Double_t* rmax0 = pcon->GetRmax();
1373
1374 for (Int_t i = 0; i < nz; i++) {
1375 z[i] = z0[i];
1376 rmin[i] = rmin0[i];
1377 rmax[i] = rmax0[i];
1378 }
1379
1380 for (Int_t i = 0; i < nz; i++) {
1381 Int_t j = nz - i - 1;
1382 pcon->DefineSection(i, - z[j], rmin[j], rmax[j]);
1383 }
1384
1385 delete[] z;
1386 delete[] rmin;
1387 delete[] rmax;
1388}
1389
1390TGeoPcon* AliSHILv3::MakeShapeFromTemplate(TGeoPcon* pcon, Float_t drMin, Float_t drMax)
1391{
1392 //
1393 // Returns new shape based on a template changing
1394 // the inner radii by drMin and the outer radii by drMax.
1395 //
1396 Int_t nz = pcon->GetNz();
1397 TGeoPcon* cpcon = new TGeoPcon(0., 360., nz);
1398 for (Int_t i = 0; i < nz; i++)
1399 cpcon->DefineSection(i, pcon->GetZ(i), pcon->GetRmin(i) + drMin, pcon->GetRmax(i) + drMax);
1400 return cpcon;
1401}
1402
1403