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