Line data Source code
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 : // Experimental Hall //
21 : // This class contains the description of the experimental hall //
22 : // //
23 : //Begin_Html
24 : /*
25 : <img src="picts/AliHALLClass.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 <TVirtualMC.h>
41 : #include <TArrayI.h>
42 :
43 : #include "AliConst.h"
44 : #include "AliHALL.h"
45 : #include "AliMagF.h"
46 : #include "AliRun.h"
47 : #include "AliLog.h"
48 :
49 12 : ClassImp(AliHALL)
50 :
51 : //_____________________________________________________________________________
52 12 : AliHALL::AliHALL()
53 36 : {
54 : //
55 : // Default constructor for the experimental Hall
56 : //
57 12 : }
58 :
59 : //_____________________________________________________________________________
60 : AliHALL::AliHALL(const char *name, const char *title)
61 1 : : AliModule(name,title)
62 3 : {
63 : //
64 : // Standard constructor for the experimental Hall
65 : //
66 : //PH SetMarkerColor(7);
67 : //PH SetMarkerStyle(2);
68 : //PH SetMarkerSize(0.4);
69 1 : }
70 :
71 : //_____________________________________________________________________________
72 : void AliHALL::CreateGeometry()
73 : {
74 : //
75 : // Create the geometry of the exprimental hall
76 : //
77 : //Begin_Html
78 : /*
79 : <img src="picts/AliHALLTree.gif">
80 : */
81 : //End_Html
82 : //
83 : // If ZDC is not present the experimental hall includes a short
84 : // section of the accelerator tunnel
85 : //
86 : //Begin_Html
87 : /*
88 : <img src="picts/AliHALLSmall.gif">
89 : */
90 : //End_Html
91 : //
92 : // If ZDC is present the experimental hall includes the accelerator
93 : // tunnel beyond the ZDC
94 : //
95 : //Begin_Html
96 : /*
97 : <img src="picts/AliHALLLarge.gif">
98 : */
99 : //End_Html
100 :
101 :
102 : Float_t r2;
103 0 : Float_t phid, phim, pbox[3], h, r, tspar[5];
104 : Float_t w1, dh, am, bm, dl,cm, hm, dr, dx, xl;
105 0 : Int_t idrotm[1999];
106 0 : Float_t trdpar[4], trapar[11], hullen;
107 : Float_t phi;
108 :
109 0 : Int_t *idtmed = fIdtmed->GetArray()-1899;
110 :
111 : // RB24/26 TUNNEL FLOOR
112 :
113 : r = 220.;
114 : h = 140.;
115 0 : phi = TMath::ACos(h / r);
116 0 : xl = r * TMath::Sin(phi);
117 : dr = 1600.;
118 0 : dh = dr * TMath::Cos(phi);
119 0 : dl = dr * TMath::Sin(phi);
120 0 : if (gAlice->GetModule("ZDC") == 0) {
121 :
122 : // No ZDC
123 : hullen = 370.;
124 0 : } else {
125 :
126 : // ZDC is present
127 : hullen = 6520.;
128 : }
129 0 : trdpar[0] = xl + dl;
130 0 : trdpar[1] = xl;
131 0 : trdpar[2] = hullen;
132 0 : trdpar[3] = dh / 2.;
133 0 : AliMatrix(idrotm[1900], 90., 0., 0., 0., 90., 90.);
134 0 : AliMatrix(idrotm[1901], 270., 0., 90., 90., 0., 0.);
135 0 : TVirtualMC::GetMC()->Gsvolu("HUFL", "TRD1", idtmed[1956], trdpar, 4);
136 0 : r2 = hullen + 1900.;
137 0 : TVirtualMC::GetMC()->Gspos("HUFL", 1, "ALIC", 70.,-100-trdpar[3] , -r2, idrotm[1900], "ONLY");
138 :
139 : // RB24/26 wall
140 :
141 0 : phid = phi * 57.296;
142 0 : tspar[0] = r;
143 0 : tspar[1] = r + dr;
144 0 : tspar[2] = hullen;
145 0 : tspar[3] = phid - 90.;
146 0 : tspar[4] = 270. - phid;
147 0 : TVirtualMC::GetMC()->Gsvolu("HUWA", "TUBS", idtmed[1956], tspar, 5);
148 0 : TVirtualMC::GetMC()->Gspos("HUWA", 1, "ALIC", 70., 40., -1900 - hullen , 0, "ONLY");
149 :
150 :
151 : // Hall floor
152 :
153 : phid = 16.197;
154 0 : trdpar[0] = 700.;
155 0 : trdpar[1] = TMath::Tan(phid * kDegrad) * 190. + 700.;
156 0 : trdpar[2] = 550.;
157 0 : trdpar[3] = 95.;
158 0 : TVirtualMC::GetMC()->Gsvolu("HHF1", "TRD1", idtmed[1956], trdpar, 4);
159 0 : TVirtualMC::GetMC()->Gspos("HHF1", 1, "ALIC", 0., -801., 1350., idrotm[1900], "ONLY");
160 0 : TVirtualMC::GetMC()->Gspos("HHF1", 2, "ALIC", 0., -801.,-1350., idrotm[1900], "ONLY");
161 :
162 : // Hall side walls
163 :
164 0 : trapar[0] = 550.;
165 0 : trapar[1] = 0.;
166 0 : trapar[2] = 0.;
167 0 : trapar[3] = 1273.78/2;
168 0 : trapar[4] = 235.;
169 0 : trapar[5] = 50.;
170 0 : trapar[6] = TMath::ATan((trapar[4] - trapar[5]) / 2. / trapar[3]) * kRaddeg;
171 0 : trapar[7] = trapar[3];
172 0 : trapar[8] = trapar[4];
173 0 : trapar[9] = trapar[5];
174 0 : trapar[10] = trapar[6];
175 0 : dx = trapar[4] * 1.5 + 700. - trapar[5] * .5;
176 0 : TVirtualMC::GetMC()->Gsvolu("HHW1", "TRAP", idtmed[1956], trapar, 11);
177 0 : TVirtualMC::GetMC()->Gspos("HHW1", 1, "ALIC", dx, -896+trapar[3], 1350., 0, "ONLY");
178 0 : TVirtualMC::GetMC()->Gspos("HHW1", 2, "ALIC",-dx, -896+trapar[3], 1350., idrotm[1901], "ONLY");
179 0 : TVirtualMC::GetMC()->Gspos("HHW1", 3, "ALIC", dx, -896+trapar[3], -1350., 0, "ONLY");
180 0 : TVirtualMC::GetMC()->Gspos("HHW1", 4, "ALIC",-dx, -896+trapar[3], -1350., idrotm[1901], "ONLY");
181 0 : pbox[0] = 50.;
182 0 : pbox[1] = (500. - (trapar[3] * 2. - 896.)) / 2.;
183 0 : pbox[2] = 1900.;
184 0 : TVirtualMC::GetMC()->Gsvolu("HBW1", "BOX ", idtmed[1956], pbox, 3);
185 0 : TVirtualMC::GetMC()->Gspos("HBW1", 1, "ALIC", 1120., 500-pbox[1], 0., 0, "ONLY");
186 0 : TVirtualMC::GetMC()->Gspos("HBW1", 2, "ALIC", -1120., 500-pbox[1], 0., 0, "ONLY");
187 :
188 : // slanted wall close to L3 magnet
189 :
190 : phim = 45.;
191 : hm = 790.;
192 : //rm = hm / TMath::Cos(phim / 2. * kDegrad);
193 0 : am = hm * TMath::Tan(phim / 2. * kDegrad);
194 0 : bm = (hm + 76.) / hm * am;
195 0 : cm = bm * 2. / TMath::Sqrt(2.);
196 0 : trapar[0] = 800.;
197 0 : trapar[1] = 0.;
198 0 : trapar[2] = 0.;
199 0 : trapar[3] = (1273.78 - cm) / 2.;
200 0 : trapar[4] = 235. - cm * TMath::Tan(phid * kDegrad) / 2.;
201 0 : trapar[5] = 50.;
202 0 : trapar[6] = TMath::ATan((trapar[4] - trapar[5]) / 2. / trapar[3]) * kRaddeg;
203 0 : trapar[7] = trapar[3];
204 0 : trapar[8] = trapar[4];
205 0 : trapar[9] = trapar[5];
206 0 : trapar[10] = trapar[6];
207 0 : w1 = trapar[4];
208 0 : dx = cm*TMath::Tan(phid * kDegrad) + 700. + trapar[4] * 1.5 - trapar[5] * .5;
209 0 : TVirtualMC::GetMC()->Gsvolu("HHW2", "TRAP", idtmed[1956], trapar, 11);
210 0 : r2 = cm - 896. + trapar[3];
211 0 : TVirtualMC::GetMC()->Gspos("HHW2", 1, "ALIC", dx, r2, 0., 0, "ONLY");
212 0 : TVirtualMC::GetMC()->Gspos("HHW2", 2, "ALIC",-dx, r2, 0., idrotm[1901], "ONLY");
213 0 : trapar[3] = cm / 2.;
214 0 : trapar[4] = w1 + cm / 2.;
215 0 : trapar[5] = w1;
216 0 : trapar[6] = TMath::ATan(.5) * kRaddeg;
217 0 : trapar[7] = trapar[3];
218 0 : trapar[8] = trapar[4];
219 0 : trapar[9] = trapar[5];
220 0 : trapar[10] = trapar[6];
221 0 : dx = 1170. - trapar[4] * .5 - trapar[5] * .5;
222 0 : TVirtualMC::GetMC()->Gsvolu("HHW3", "TRAP", idtmed[1956], trapar, 11);
223 0 : r2 = trapar[3] - 896.;
224 0 : TVirtualMC::GetMC()->Gspos("HHW3", 1, "ALIC", dx, r2, 0., 0, "ONLY");
225 0 : TVirtualMC::GetMC()->Gspos("HHW3", 2, "ALIC",-dx, r2, 0., idrotm[1901], "ONLY");
226 :
227 :
228 0 : tspar[0] = 1070.;
229 0 : tspar[1] = 1170.;
230 0 : tspar[2] = 1900.;
231 0 : tspar[3] = 0.;
232 0 : tspar[4] = 180.;
233 0 : TVirtualMC::GetMC()->Gsvolu("HHC1", "TUBS", idtmed[1956], tspar, 5);
234 0 : TVirtualMC::GetMC()->Gspos("HHC1", 1, "ALIC", 0., 500., 0., 0, "ONLY");
235 0 : trdpar[0] = 1170 - trapar[4] * 2.;
236 0 : trdpar[1] = trdpar[0] + TMath::Tan(phim * kDegrad) * 76.;
237 0 : trdpar[2] = 800.;
238 0 : trdpar[3] = 38.;
239 0 : TVirtualMC::GetMC()->Gsvolu("HHF2", "TRD1", idtmed[1956], trdpar, 4);
240 0 : TVirtualMC::GetMC()->Gspos("HHF2", 1, "ALIC", 0., -858., 0., idrotm[1900], "ONLY");
241 :
242 : // pillars for working platform
243 :
244 0 : pbox[0] = 40.;
245 0 : pbox[1] = 96.;
246 0 : pbox[2] = 550.;
247 0 : TVirtualMC::GetMC()->Gsvolu("HPIL", "BOX ", idtmed[1956], pbox, 3);
248 0 : TVirtualMC::GetMC()->Gspos("HPIL", 1, "ALIC", 165.,-706+pbox[1] , -1350., 0, "ONLY");
249 0 : TVirtualMC::GetMC()->Gspos("HPIL", 2, "ALIC",-165.,-706+pbox[1] , -1350., 0, "ONLY");
250 :
251 : // simple concrete beam shield
252 :
253 0 : Float_t ppgon[10];
254 0 : ppgon[0] = 45.;
255 0 : ppgon[1] = 360.;
256 0 : ppgon[2] = 4.;
257 0 : ppgon[3] = 2.;
258 0 : ppgon[7] = 1800.;
259 0 : ppgon[8] = 150.;
260 0 : ppgon[9] = 250.;
261 0 : ppgon[4] = 720.;
262 0 : ppgon[5] = 150.;
263 0 : ppgon[6] = 250.;
264 :
265 0 : TVirtualMC::GetMC()->Gsvolu("HMBS", "PGON", idtmed[1956], ppgon, 10);
266 0 : TVirtualMC::GetMC()->Gspos("HMBS", 1, "ALIC", 0., 70., 0., 0, "ONLY");
267 0 : }
268 :
269 : //_____________________________________________________________________________
270 : void AliHALL::CreateMaterials()
271 : {
272 : //
273 : // Create materials for the experimental hall
274 : //
275 :
276 : Int_t isxfld = 0;
277 2 : Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
278 :
279 1 : Float_t aconc[10] = { 1.,12.01,15.994,22.99,24.305,26.98,28.086,39.1,40.08,55.85 };
280 1 : Float_t zconc[10] = { 1.,6.,8.,11.,12.,13.,14.,19.,20.,26. };
281 1 : Float_t wconc[10] = { .01,.001,.529107,.016,.002,.033872,.337021,.013,.044,.014 };
282 :
283 1 : Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
284 1 : Float_t zAir[4]={6.,7.,8.,18.};
285 1 : Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
286 : Float_t dAir = 1.20479E-3;
287 :
288 : // Steel
289 1 : Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
290 1 : Float_t zsteel[4] = { 26.,24.,28.,14. };
291 1 : Float_t wsteel[4] = { .715,.18,.1,.005 };
292 :
293 : Float_t epsil, stmin, deemax, tmaxfd, stemax;
294 :
295 :
296 1 : AliMixture(15, "AIR0$ ", aAir, zAir, dAir, 4, wAir);
297 1 : AliMixture(35, "AIR1$ ", aAir, zAir, dAir, 4, wAir);
298 1 : AliMixture(55, "AIR2$ ", aAir, zAir, dAir, 4, wAir);
299 :
300 1 : AliMixture(17, "CONCRETE0$", aconc, zconc, 2.35, 10, wconc);
301 1 : AliMixture(37, "CONCRETE1$", aconc, zconc, 2.35, 10, wconc);
302 1 : AliMixture(57, "CONCRETE2$", aconc, zconc, 2.35, 10, wconc);
303 :
304 : // Stainless Steel
305 1 : AliMixture(10, "STAINLESS STEEL1", asteel, zsteel, 7.88, 4, wsteel);
306 1 : AliMixture(30, "STAINLESS STEEL2", asteel, zsteel, 7.88, 4, wsteel);
307 1 : AliMixture(50, "STAINLESS STEEL3", asteel, zsteel, 7.88, 4, wsteel);
308 : // Iron
309 : //
310 1 : AliMaterial(52, "IRON", 55.85, 26., 7.87, 1.76, 17.1);
311 :
312 :
313 : // ****************
314 : // Defines tracking media parameters.
315 : // Les valeurs sont commentees pour laisser le defaut
316 : // a GEANT (version 3-21, page CONS200), f.m.
317 : epsil = .001; // Tracking precision,
318 : stemax = -1.; // Maximum displacement for multiple scat
319 : tmaxfd = -20.; // Maximum angle due to field deflection
320 : deemax = -.3; // Maximum fractional energy loss, DLS
321 : stmin = -.8;
322 : // ***************
323 :
324 : // Stainless Steel
325 1 : AliMedium(10, "STST_C0 ", 10, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
326 1 : AliMedium(30, "STST_C1 ", 30, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
327 1 : AliMedium(50, "STST_C2 ", 50, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
328 :
329 : // Air
330 :
331 1 : AliMedium(15, "AIR_C0 ", 15, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
332 1 : AliMedium(35, "AIR_C1 ", 35, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
333 1 : AliMedium(55, "AIR_C2 ", 55, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
334 :
335 : // Concrete
336 :
337 1 : AliMedium(17, "CC_C0 ", 17, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
338 1 : AliMedium(37, "CC_C1 ", 37, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
339 1 : AliMedium(57, "CC_C2 ", 57, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
340 :
341 : // Iron
342 1 : AliMedium(52, "FE_C2 ", 52, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
343 1 : }
344 :
345 : //_____________________________________________________________________________
346 : void AliHALL::Init()
347 : {
348 : //
349 : // Initialise the HALL after it has been built
350 : //
351 : Int_t i;
352 : //
353 0 : if(AliLog::GetGlobalDebugLevel()>0) {
354 0 : printf("\n%s: ",ClassName());
355 0 : for(i=0;i<35;i++) printf("*");
356 0 : printf(" HALL_INIT ");
357 0 : for(i=0;i<35;i++) printf("*");
358 0 : printf("\n%s: ",ClassName());
359 : //
360 : // Here the HALL initialisation code (if any!)
361 0 : for(i=0;i<80;i++) printf("*");
362 0 : printf("\n");
363 0 : }
364 0 : }
365 :
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