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4c039060 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
88cb7938 16/* $Id$ */
4c039060 17
73042f01 18//
fe4da5cc 19///////////////////////////////////////////////////////////////////////////////
20// //
21// Time Projection Chamber version 1 -- detailed TPC and fast simulation //
37831078 22// //
fe4da5cc 23//Begin_Html
24/*
1439f98e 25<img src="picts/AliTPCv1Class.gif">
fe4da5cc 26*/
27//End_Html
28// //
29// //
30///////////////////////////////////////////////////////////////////////////////
31
88cb7938 32#include <Riostream.h>
c1637e41 33#include <stdlib.h>
c1637e41 34#include <TInterpreter.h>
35#include <TMath.h>
c1637e41 36#include <TVirtualMC.h>
d9e80aca 37#include <TString.h>
38#include <TSystem.h>
88cb7938 39
c1637e41 40#include "AliConst.h"
41#include "AliRun.h"
42#include "AliTPCDigitsArray.h"
43#include "AliTPCParam.h"
44#include "AliTPCParamSR.h"
45#include "AliTPCv1.h"
46#include "TLorentzVector.h"
c5d5037c 47#include "TGeoCone.h"
c1637e41 48#include "AliMC.h"
49#include "TGeoManager.h"
50#include "TGeoVolume.h"
51#include "TGeoPcon.h"
52#include "TGeoTube.h"
53#include "TGeoPgon.h"
54#include "TGeoTrd1.h"
55#include "TGeoCompositeShape.h"
56#include "TGeoPara.h"
a11596ad 57
58using std::ifstream;
59using std::ios_base;
c1637e41 60ClassImp(AliTPCv1)
37831078 61
c1637e41 62//_____________________________________________________________________________
37831078 63
179c6296 64 AliTPCv1::AliTPCv1():AliTPC(),fIdSens(0)
65{
37831078 66
c1637e41 67 fHitType = 1;
37831078 68
c1637e41 69}
70
71//_____________________________________________________________________________
72AliTPCv1::AliTPCv1(const char *name, const char *title)
179c6296 73 :AliTPC(name, title),fIdSens(0)
74 {
c1637e41 75 //
76 // Standard constructor for Time Projection Chamber
77 //
37831078 78
37831078 79
c1637e41 80 if (fTPCParam)
81 fTPCParam->Write(fTPCParam->GetTitle());
79575d04 82
c1637e41 83 fHitType=1;
84}
79575d04 85
c1637e41 86//_____________________________________________________________________________
87void AliTPCv1::CreateGeometry()
88{
89 //-------------------------------------------------------------
90 // Creates geometry for Time Projection Chamber version 1
91 // Detailed geometry -- Fast simulation - space points
92 // at the pad-rows centers
93 // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
94 //-----------------------------------------------------------
37831078 95
c1637e41 96 //Begin_Html
97 /*
98 <img src="picts/AliTPC.gif">
99 */
100 //End_Html
101 //Begin_Html
102 /*
103 <img src="picts/AliTPCv1Tree.gif">
104 */
105 //End_Html
37831078 106 //----------------------------------------------------------
c1637e41 107 // This geometry is written using TGeo class
108 // Firstly the shapes are defined, and only then the volumes
109 // What is recognized by the MC are volumes
37831078 110 //----------------------------------------------------------
c1637e41 111 //
112 // tpc - this will be the mother volume
113 //
37831078 114
c1637e41 115 //
116 // here I define a volume TPC
117 // retrive the medium name with "TPC_" as a leading string
118 //
8ad31ee5 119 TGeoPcon *tpc = new TGeoPcon(0.,360.,30); //30 sections
c1637e41 120 //
8ad31ee5 121 tpc->DefineSection(0,-289.6,77.,278.);
122 tpc->DefineSection(1,-262.1,77.,278.);
c1637e41 123 //
8ad31ee5 124 tpc->DefineSection(2,-262.1,83.1,278.);
125 tpc->DefineSection(3,-260.,83.1,278.);
c1637e41 126 //
8ad31ee5 127 tpc->DefineSection(4,-260.,70.,278.);
128 tpc->DefineSection(5,-259.6,70.,278.);
c1637e41 129 //
8ad31ee5 130 tpc->DefineSection(6,-259.6,68.1,278.);
131 tpc->DefineSection(7,-253.6,68.1,278.);
c1637e41 132 //
c5d5037c 133 tpc->DefineSection(8,-253.6,67.88,278.);//hs
134 tpc->DefineSection(9,-74.0,60.68,278.);// hs
c1637e41 135 //
8ad31ee5 136 tpc->DefineSection(10,-74.0,60.1,278.);
137 tpc->DefineSection(11,-73.3,60.1,278.);
c1637e41 138 //
8ad31ee5 139 tpc->DefineSection(12,-73.3,56.9,278.);
140 tpc->DefineSection(13,-68.5,56.9,278.);
c1637e41 141 //
8ad31ee5 142 tpc->DefineSection(14,-68.5,60.,278.);
143 tpc->DefineSection(15,-64.7,60.,278.);
78134e48 144 //
8ad31ee5 145 tpc->DefineSection(16,-64.7,56.9,278.);
146 tpc->DefineSection(17,73.3,56.9,278.);
78134e48 147 //
8ad31ee5 148 tpc->DefineSection(18,73.3,60.1,278.);
149 tpc->DefineSection(19,74.0,60.1,278.);
4fb9bd37 150 //
c5d5037c 151 tpc->DefineSection(20,74.0,60.68,278.);// hs
152 tpc->DefineSection(21,253.6,65.38,278.);// hs
4fb9bd37 153 //
8ad31ee5 154 tpc->DefineSection(22,253.6,65.6,278.);
155 tpc->DefineSection(23,259.6,65.6,278.);
4fb9bd37 156 //
8ad31ee5 157 tpc->DefineSection(24,259.6,70.0,278.);
158 tpc->DefineSection(25,260.,70.0,278.);
4fb9bd37 159 //
8ad31ee5 160 tpc->DefineSection(26,260.,83.1,278.);
161 tpc->DefineSection(27,262.1,83.1,278.);
162 //
163 tpc->DefineSection(28,262.1,77.,278);
164 tpc->DefineSection(29,289.6,77.,278.);
165
166
c1637e41 167 //
168 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
169 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
170 //
171 // drift volume - sensitive volume, extended beyond the
172 // endcaps, because of the alignment
173 //
174 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
175 dvol->DefineSection(0,-260.,74.5,264.4);
176 dvol->DefineSection(1,-253.6,74.5,264.4);
177 //
178 dvol->DefineSection(2,-253.6,76.6774,258.);
179 dvol->DefineSection(3,253.6,76.6774,258.);
180 //
181 dvol->DefineSection(4,253.6,74.5,264.4);
182 dvol->DefineSection(5,260.,74.5,264.4);
183 //
f3d601a5 184 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-1");
c1637e41 185 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
186 //
187 //
188 v1->AddNode(v9,1);
189 //
190 // outer insulator
191 //
192 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
193 //
194 tpco->DefineSection(0,-256.6,264.8,278.);
195 tpco->DefineSection(1,-253.6,264.8,278.);
196 //
197 tpco->DefineSection(2,-253.6,258.,278.);
198 tpco->DefineSection(3,250.6,258.,278.);
199 //
200 tpco->DefineSection(4,250.6,258.,275.5);
201 tpco->DefineSection(5,253.6,258.,275.5);
202 //
203 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
204 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
205 //
206 // outer containment vessel
207 //
208 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
209 //
210 tocv->DefineSection(0,-256.6,264.8,278.);
211 tocv->DefineSection(1,-253.6,264.8,278.);
212 //
213 tocv->DefineSection(2,-253.6,274.8124,278.);
214 tocv->DefineSection(3,247.6,274.8124,278.);
215 //
216 tocv->DefineSection(4,247.6,270.4,278.);
217 tocv->DefineSection(5,250.6,270.4,278.);
218 //
219 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
220 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
221 //
222 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
223 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
224 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
225 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
226 //
227 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
228 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
229 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
230 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
231 //
232 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
233 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
234 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
235 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
c5d5037c 236 TGeoMedium *mhs = gGeoManager->GetMedium("TPC_Steel");
237 TGeoMedium *m12 = gGeoManager->GetMedium("TPC_Water");
c1637e41 238 //-------------------------------------------------------
239 // Tpc Outer Field Cage
240 // daughters - composite (sandwich)
241 //-------------------------------------------------------
37831078 242
c1637e41 243 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
244 //
245 tofc->DefineSection(0,-253.6,258.,269.6);
246 tofc->DefineSection(1,-250.6,258.,269.6);
247 //
248 tofc->DefineSection(2,-250.6,258.,260.0676);
249 tofc->DefineSection(3,250.6,258.,260.0676);
250 //
251 tofc->DefineSection(4,250.6,258.,275.5);
252 tofc->DefineSection(5,253.6,258.,275.5);
253 //
254 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
255 //sandwich
256 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
257 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
258 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
259 //
260 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
261 //
262 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
263 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
264 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
265 //
266 // outer part - positioning
267 //
268 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
269 //
270 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
271 //
456cb019 272 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
c1637e41 273 //
274 v2->AddNode(v3,1); v2->AddNode(v4,1);
275 //
276 v1->AddNode(v2,1);
277 //--------------------------------------------------------------------
278 // Tpc Inner INsulator (CO2)
279 // the cones, the central drum and the inner f.c. sandwich with a piece
280 // of the flane will be placed in the TPC
281 //--------------------------------------------------------------------
282 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
283 //
284 tpci->DefineSection(0,-253.6,68.4,76.6774);
285 tpci->DefineSection(1,-74.0,61.2,76.6774);
286 //
287 tpci->DefineSection(2,74.0,61.2,76.6774);
288 //
289 tpci->DefineSection(3,253.6,65.9,76.6774);
290 //
291 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
292 //
293 // now the inner field cage - only part of flanges (2 copies)
294 //
295 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
296 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
297 //
298 //---------------------------------------------------------
299 // Tpc Inner Containment vessel - Muon side
300 //---------------------------------------------------------
301 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
302 //
303 tcms->DefineSection(0,-259.1,68.1,74.2);
304 tcms->DefineSection(1,-253.6,68.1,74.2);
305 //
306 tcms->DefineSection(2,-253.6,68.1,68.4);
307 tcms->DefineSection(3,-74.0,60.9,61.2);
308 //
309 tcms->DefineSection(4,-74.0,60.1,61.2);
310 tcms->DefineSection(5,-73.3,60.1,61.2);
311 //
312 tcms->DefineSection(6,-73.3,56.9,61.2);
313 tcms->DefineSection(7,-73.0,56.9,61.2);
314 //
315 tcms->DefineSection(8,-73.0,56.9,58.8);
316 tcms->DefineSection(9,-71.3,56.9,58.8);
317 //
318 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
c5d5037c 319 //------------------------------------------------
320 // Heat screen muon side
321 //------------------------------------------------
322
323 TGeoCone *thsm = new TGeoCone(89.8,67.88,68.1,60.68,60.9);
324 TGeoCone *thsmw = new TGeoCone(89.8,67.94,68.04,60.74,60.84);
325 TGeoVolume *hvsm = new TGeoVolume("TPC_HSM",thsm,mhs); //steel
326 TGeoVolume *hvsmw = new TGeoVolume("TPC_HSMW",thsmw,m12); //water
327 // assembly heat screen muon
328 hvsm->AddNode(hvsmw,1);
c1637e41 329 //-----------------------------------------------
330 // inner containment vessel - shaft side
331 //-----------------------------------------------
332 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
333 //
334 tcss->DefineSection(0,71.3,56.9,58.8);
335 tcss->DefineSection(1,73.0,56.9,58.8);
336 //
337 tcss->DefineSection(2,73.0,56.9,61.2);
338 tcss->DefineSection(3,73.3,56.9,61.2);
339 //
340 tcss->DefineSection(4,73.3,60.1,61.2);
341 tcss->DefineSection(5,74.0,60.1,61.2);
342 //
343 tcss->DefineSection(6,74.0,60.9,61.2);
344 tcss->DefineSection(7,253.6,65.6,65.9);
345 //
346 tcss->DefineSection(8,253.6,65.6,74.2);
347 tcss->DefineSection(9,258.1,65.6,74.2);
348 //
349 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
c5d5037c 350 //-------------------------------------------------
351 // Heat screen shaft side
352 //--------------------------------------------------
353 TGeoCone *thss = new TGeoCone(89.8,60.68,60.9,65.38,65.6);
354 TGeoCone *thssw = new TGeoCone(89.8,60.74,60.84,65.44,65.54);
355 TGeoVolume *hvss = new TGeoVolume("TPC_HSS",thss,mhs); //steel
356 TGeoVolume *hvssw = new TGeoVolume("TPC_HSSW",thssw,m12); //water
357 //assembly heat screen shaft
358 hvss->AddNode(hvssw,1);
c1637e41 359 //-----------------------------------------------
360 // Inner field cage
361 // define 4 parts and make an assembly
362 //-----------------------------------------------
363 // part1 - Al - 2 copies
364 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
365 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
366 // sandwich - outermost parts - 2 copies
367 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
368 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
369 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
370 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
371 //
372 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
373 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
374 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
375 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
376 //
377 // middle parts - 2 copies
378 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
379 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
380 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
381 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
382 //
383 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
384 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
385 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
386 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
387 // central part - 1 copy
388 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
389 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
390 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
391 //
392 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
393 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
394 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
395 //
396 // inner part - positioning
397 //
398 // creating a sandwich
399 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
400 //
401 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
402 //
403 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
404 //
405 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
406 //
407 tv100->AddNode(tv10,1);
408 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
409 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
410 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
411 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
412 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
413 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
414 //
415 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
416 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
417 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
c5d5037c 418 v1->AddNode(hvsm,1,new TGeoTranslation(0.,0.,-163.8));
419 v1->AddNode(hvss,1,new TGeoTranslation(0.,0.,163.8));
c1637e41 420 v9->AddNode(tv100,1);
421 //
422 // central drum
423 //
424 // flange + sandwich
425 //
426 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
427 cfl->DefineSection(0,-71.1,59.7,61.2);
428 cfl->DefineSection(1,-68.6,59.7,61.2);
429 //
430 cfl->DefineSection(2,-68.6,60.6324,61.2);
431 cfl->DefineSection(3,68.6,60.6324,61.2);
432 //
433 cfl->DefineSection(4,68.6,59.7,61.2);
434 cfl->DefineSection(5,71.1,59.7,61.2);
435 //
436 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
437 // sandwich
438 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
439 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
440 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
441 //
442 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
443 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
444 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
445 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
446 //
447 // seals for central drum 2 copies
448 //
449 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
450 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
451 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
78134e48 452 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
453 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
c1637e41 454 //
455 // seal collars
456 TGeoPcon *se = new TGeoPcon(0.,360.,6);
457 se->DefineSection(0,-72.8,59.7,61.2);
458 se->DefineSection(1,-72.3,59.7,61.2);
459 //
460 se->DefineSection(2,-72.3,58.85,61.2);
461 se->DefineSection(3,-71.6,58.85,61.2);
462 //
463 se->DefineSection(4,-71.6,59.7,61.2);
464 se->DefineSection(5,-71.3,59.7,61.2);
465 //
466 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
467 //
468 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
469 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
470 //
471 // define reflection matrix
472 //
4fa47888 473 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
c1637e41 474 //
475 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
476 //
a1ec4d07 477 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
478 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
c1637e41 479 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
480 //
481 // central membrane - 2 rings and a mylar membrane - assembly
482 //
483 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
484 TGeoTube *oh = new TGeoTube(250.,256.,.5);
485 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
486 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
487 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
488 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
489 //
490 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
491 cm->AddNode(ihv,1);
492 cm->AddNode(ohv,1);
493 cm->AddNode(memv,1);
494 v9->AddNode(cm,1);
495 //
496 // end caps - they are make as an assembly of single segments
497 // containing both readout chambers
498 //
d899e254 499 Double_t openingAngle = 10.*TMath::DegToRad();
c1637e41 500 Double_t thick=1.5; // rib
d899e254 501 Double_t shift = thick/TMath::Sin(openingAngle);
c1637e41 502 //
d899e254 503 Double_t lowEdge = 86.3; // hole in the wheel
504 Double_t upEdge = 240.4; // hole in the wheel
c1637e41 505 //
506 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
507 //
508 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
509 //
d899e254 510 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
511 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
c1637e41 512 //
d899e254 513 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
514 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
c1637e41 515 //
d899e254 516 Double_t ys = shift*TMath::Sin(openingAngle);
517 Double_t xs = shift*TMath::Cos(openingAngle);
c1637e41 518 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
519 tr->RegisterYourself();
520 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
521 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
522 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
523 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
524 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
525 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
526 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
527 //
528 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
529 //
530 // readout chambers
531 //
532 // IROC first
533 //
534 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
535 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
536 // empty space
537 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
538 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
539 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
540 //bars
541 Double_t tga = (19.8328-12.3742)/39.3;
542 Double_t xmin,xmax;
543 xmin = 9.55*tga+12.3742;
544 xmax = 9.95*tga+12.3742;
545 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
546 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
547 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
548 xmin=19.4*tga+12.3742;
549 xmax=19.9*tga+12.3742;
550 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
551 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
552 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
553 xmin=29.35*tga+12.3742;
554 xmax=29.75*tga+12.3742;
555 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
556 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
557 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
558 //
559 // holes for connectors
560 //
561 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
562 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
d9e80aca 563 TString fileName(gSystem->Getenv("ALICE_ROOT"));
564 fileName += "/TPC/conn_iroc.dat";
c1637e41 565 ifstream in;
d9e80aca 566 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 567 for(Int_t i =0;i<86;i++){
456cb019 568 Double_t y = 3.99;
c1637e41 569 Double_t x,z,ang;
570 in>>x>>z>>ang;
456cb019 571 z-=26.5;
c1637e41 572 TGeoRotation *rrr = new TGeoRotation();
573 rrr->RotateY(ang);
574 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
575 ibdv->AddNode(connv,i+1,trans);
576 }
577 in.close();
578 // "cap"
579 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
580 // "hole"
581 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
582 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
583 tr1->RegisterYourself();
584 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
585 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
586 //
587 // pad plane and wire fixations
588 //
589 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
590 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
591 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
592 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
593 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
594 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
595 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
596 //
597 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
598 //
599 iroc->AddNode(ibdv,1);
600 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
601 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
602 tga =(23.3521-14.5974)/49.65;
603 Double_t xx = 24.825*tga+14.5974-0.6;
604 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
605 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
606 //
607 // OROC
608 //
609 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
610 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
611 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
612 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
613 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
614 //horizontal bars
615 tga=(38.5084-20.2938)/99.3;
616 xmin=tga*10.2+20.2938;
617 xmax=tga*10.6+20.2938;
618 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
619 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
620 //
621 xmin=22.55*tga+20.2938;
622 xmax=24.15*tga+20.2938;
623 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
624 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
625 //
626 xmin=36.1*tga+20.2938;
627 xmax=36.5*tga+20.2938;
628 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
629 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
630 //
631 xmin=49.0*tga+20.2938;
632 xmax=50.6*tga+20.2938;
633 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
634 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
635 //
636 xmin=63.6*tga+20.2938;
637 xmax=64.0*tga+20.2938;
638 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
639 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
640 //
641 xmin=75.5*tga+20.2938;
642 xmax=77.15*tga+20.2938;
643 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
644 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
645 //
646 xmin=88.7*tga+20.2938;
647 xmax=89.1*tga+20.2938;
648 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
649 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
650 //
651 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
652 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
653 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
654 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
655 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
656 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
657 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
658 // vertical bars
659 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
660 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
661 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
662 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
663 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
664 //
665 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
666 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
667 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
668 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
669 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
670 //
671 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
672 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
673 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
674 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
675 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
676 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
677 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
678 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
679 //
680 // holes for connectors
681 //
d9e80aca 682 fileName = gSystem->Getenv("ALICE_ROOT");
683 fileName += "/TPC/conn_oroc.dat";
684 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 685 for(Int_t i =0;i<78;i++){
686 Double_t y =3.89;
687 Double_t x,z,ang;
688 Double_t x1,z1,x2,z2;
689 in>>x>>z>>ang;
690 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
691 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
692 //
693 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
694 //
695 TGeoRotation *rr = new TGeoRotation();
696 rr->RotateY(ang);
697 z1-=54.95;
698 z2-=54.95;
699 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
700 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
701 obdv->AddNode(connv,i+1,trans1);
702 obdv->AddNode(connv,i+79,trans2);
703 }
704 in.close();
705 // cap
706 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
707 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
708 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
709 tr5->RegisterYourself();
710 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
711 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
712 //
713 // pad plane and wire fixations
714 //
715 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
716 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
717 //
718 tga=(43.5239-23.3874)/114.2;
719 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
720 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
721 xx = 57.1*tga+23.3874-0.7;
722 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
723 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
724 //
725 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
726 //
727 oroc->AddNode(obdv,1);
728 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
729 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
730 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
731 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
732 //
733 // now iroc and oroc are placed into a sector...
734 //
a1ec4d07 735 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
736 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
c1637e41 737 TGeoRotation rot1("rot1",90.,90.,0.);
738 TGeoRotation rot2("rot2");
739 rot2.RotateY(10.);
740 TGeoRotation *rot = new TGeoRotation("rot");
741 *rot=rot1*rot2;
742 //
743 Double_t x0,y0;
d899e254 744 x0=110.2*TMath::Cos(openingAngle);
745 y0=110.2*TMath::Sin(openingAngle);
20527578 746 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
747 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
d899e254 748 x0=188.45*TMath::Cos(openingAngle);
749 y0=188.45*TMath::Sin(openingAngle);
20527578 750 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
751 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
c1637e41 752 //
a1ec4d07 753 // A-side
c1637e41 754 //
a1ec4d07 755 secta->AddNode(ch,1);
756 secta->AddNode(iroc,1,combi1a);
757 secta->AddNode(oroc,1,combi2a);
c1637e41 758 //
a1ec4d07 759 // C-side
760 //
761 sectc->AddNode(ch,1);
762 sectc->AddNode(iroc,1,combi1c);
763 sectc->AddNode(oroc,1,combi2c);
764 //
765 // now I try to make wheels...
766 //
767 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
768 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
c1637e41 769 //
770 for(Int_t i =0;i<18;i++){
771 Double_t phi = (20.*i);
772 TGeoRotation *r = new TGeoRotation();
773 r->RotateZ(phi);
a1ec4d07 774 wheela->AddNode(secta,i+1,r);
775 wheelc->AddNode(sectc,i+1,r);
79575d04 776
c1637e41 777 }
778 // wheels in the drift volume!
c1637e41 779 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
a1ec4d07 780 v9->AddNode(wheela,1,combi3);
781 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
c1637e41 782
783 //_____________________________________________________________
784 // service support wheel
785 //_____________________________________________________________
786 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
787 sw->DefineSection(0,-4.,80.5,251.75);
788 sw->DefineSection(1,4.,80.5,251.75);
789 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
790 //
791 thick=1.;
d899e254 792 shift = thick/TMath::Sin(openingAngle);
c1637e41 793 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
794 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
795 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
796 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
797 //
74518339 798 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
799 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
800 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
801 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
802 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
803 //
804 shv->AddNode(elv,1);
805 //
806 //
d899e254 807 ys = shift*TMath::Sin(openingAngle);
808 xs = shift*TMath::Cos(openingAngle);
c1637e41 809 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
810 // cover
811 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
812 co->DefineSection(0,-0.5,77.,255.25);
813 co->DefineSection(1,0.5,77.,255.25);
814 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
815 // hole in a cover
816 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
d899e254 817 shift=4./TMath::Sin(openingAngle);
c1637e41 818 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
819 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
820 //
821 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
822 //
d899e254 823 ys = shift*TMath::Sin(openingAngle);
824 xs = shift*TMath::Cos(openingAngle);
c1637e41 825 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
826 //
827 // Sector as an Assembly
828 //
829 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
830 swhs->AddNode(swv,1);
831 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
832 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
833 //
834 // SSW as an Assembly of sectors
835 //
836 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
837 for(Int_t i =0;i<18;i++){
838 Double_t phi = (20.*i);
839 TGeoRotation *r = new TGeoRotation();
840 r->RotateZ(phi);
841 swheel->AddNode(swhs,i+1,r);
842 }
843 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
844 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
845
846 // sensitive strips
f3d601a5 847 TGeoMedium *m8 = gGeoManager->GetMedium("TPC_Ne-CO2-2");
c1637e41 848 Int_t totrows;
849 totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp();
850 Double_t *upar;
851 upar=NULL;
852 gGeoManager->Volume("TPC_Strip","PGON",m8->GetId(),upar);
853 upar=new Double_t [10];
854 upar[0]=0.;
855 upar[1]=360.;
856 upar[2]=18.;
857 upar[3]=2.;
858 //
859 upar[4]=-124.8;
860 upar[7]=124.8;
861
862 Double_t rlow=fTPCParam->GetPadRowRadiiLow(0);
863
864 upar[5]=rlow;
865 upar[6]=rlow+.01;
866 upar[8]=upar[5];
867 upar[9]=upar[6];
868 //
869 gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
870 gGeoManager->Node("TPC_Strip",totrows+1,
871 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
872 //
873 // now, strips
874 //
875 //lower sectors
876 for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){
877 rlow=fTPCParam->GetPadRowRadiiLow(i-1);
878 upar[5]=rlow;
879 upar[6]=rlow+.01;
880 upar[8]=upar[5];
881 upar[9]=upar[6];
882 gGeoManager->Node("TPC_Strip",i,
883 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
884 gGeoManager->Node("TPC_Strip",totrows+i,
885 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
886 }
887 //upper sectors
888 for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){
889 rlow=fTPCParam->GetPadRowRadiiUp(i-1);
890 upar[5]=rlow;
891 upar[6]=rlow+.01;
892 upar[8]=upar[5];
893 upar[9]=upar[6];
894 gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(),
895 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
896 gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(),
897 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
898 }
899
37831078 900 //----------------------------------------------------------
c1637e41 901 // TPc Support Rods - MAKROLON
37831078 902 //----------------------------------------------------------
c1637e41 903 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
904 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
78134e48 905 TGeoMedium *m10 = gGeoManager->GetMedium("TPC_Alumina");
906 TGeoMedium *m11 = gGeoManager->GetMedium("TPC_Peek");
c1637e41 907 // upper and lower rods differ in length!
908 delete [] upar;
909 upar=NULL;
910 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
911 upar=new Double_t [3];
912 upar[0]=1.8;
913 upar[1]=2.2;
914
79575d04 915 //
c1637e41 916 //HV rods - makrolon + 0.58cm (diameter) Cu
ae4806ca 917 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
c1637e41 918 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
919 //
920 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
921 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
922 hvrv->AddNode(hvcv,1);
78134e48 923 //
924 // resistor rods
925 //
926 TGeoTube *cri = new TGeoTube(0.,0.45,126.64); //inner
927 TGeoTube *cro = new TGeoTube(0.,0.45,126.54); //outer
928 TGeoTube *cwi = new TGeoTube(0.,0.15,126.64); // water inner
929 TGeoTube *cwo = new TGeoTube(0.,0.15,126.54); // water outer
930 //
931 TGeoVolume *criv = new TGeoVolume("TPC_CR_I",cri,m10);
932 TGeoVolume *crov = new TGeoVolume("TPC_CR_O",cro,m10);
933 TGeoVolume *cwiv = new TGeoVolume("TPC_W_I",cwi,m11);
934 TGeoVolume *cwov = new TGeoVolume("TPC_W_O",cwo,m11);
935 //
936 // ceramic rod with water
937 //
938 criv->AddNode(cwiv,1);
939 crov->AddNode(cwov,1);
940 //
941 TGeoTube *pri =new TGeoTube(0.2,0.35,126.64); //inner
942 TGeoTube *pro = new TGeoTube(0.2,0.35,126.54); //outer
943 //
944 // peek rod
945 //
946 TGeoVolume *priv = new TGeoVolume("TPC_PR_I",pri,m12);
947 TGeoVolume *prov = new TGeoVolume("TPC_PR_O",pro,m12);
948 //
949 // resistor rods assembly
950 //
be53328e 951 TGeoRotation *rotr = new TGeoRotation("rotr");
952 rotr->RotateZ(-21.);
78134e48 953 //
954 TGeoTube *rri = new TGeoTube(1.8,2.2,126.64);//inner
955 TGeoTube *rro = new TGeoTube(1.8,2.2,126.54);//inner
956 //
957 TGeoVolume *rriv = new TGeoVolume("TPC_RR_I",rri,m6);
958 TGeoVolume *rrov = new TGeoVolume("TPC_RR_O",rro,m6);
959 //
960 //
a3d2be59 961 TGeoVolumeAssembly *rrin = new TGeoVolumeAssembly("TPC_RROD_I");
962 TGeoVolumeAssembly *rrou = new TGeoVolumeAssembly("TPC_RROD_O");
963 rrin->AddNode(rriv,1);
964 rrin->AddNode(criv,1,new TGeoTranslation(0.5,0.866, 0.));
965 rrin->AddNode(criv,2,new TGeoTranslation(0.5,-0.866, 0.));
966 rrin->AddNode(priv,1);
967 //
968 rrou->AddNode(rrov,1);
969 rrou->AddNode(crov,1,new TGeoTranslation(0.5,0.866, 0.));
970 rrou->AddNode(crov,2,new TGeoTranslation(0.5,-0.866, 0.));
971 rrou->AddNode(prov,1);
7281dc07 972 for(Int_t i=0;i<18;i++){
c1637e41 973 Double_t angle,x,y;
974 Double_t z,r;
975 angle=TMath::DegToRad()*20.*(Double_t)i;
976 r=81.5;
977 x=r * TMath::Cos(angle);
978 y=r * TMath::Sin(angle);
979 upar[2]=126.64; //lower
980 z= 126.96;
78134e48 981 if(i==3){
be53328e 982 v9->AddNode(rrin,1,new TGeoCombiTrans(x,y,z,rotr)); //A
983 v9->AddNode(rrin,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 984 }
985 else {
986 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
987 gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
c1637e41 988 }
78134e48 989
990 //
c1637e41 991 r=254.25;
992 x=r * TMath::Cos(angle);
993 y=r * TMath::Sin(angle);
994 upar[2]=126.54; //upper
995 z=127.06;
78134e48 996 //
997 if(i==15){
5042ab7d 998 //v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));//A-side only
999 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,127.14));//A-side only
78134e48 1000 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
1001 }
1002 else if(i==11){
be53328e 1003 v9->AddNode(rrou,1,new TGeoCombiTrans(x,y,z,rotr)); //A
1004 v9->AddNode(rrou,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 1005 }
1006 else{
1007 //
1008 gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
1009 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
1010 }
c1637e41 1011 gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
1012 gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
1013 }
79575d04 1014
bde68ab0 1015 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
1016 alice->AddNode(v1,1);
37831078 1017
1018} // end of function
1019
37831078 1020
1021//_____________________________________________________________________________
1022void AliTPCv1::CreateMaterials()
1023{
1024 //
1025 // Define materials for Time Projection Chamber
1026 //
1027 AliTPC::CreateMaterials();
1028}
1029
1030//_____________________________________________________________________________
1031void AliTPCv1::Init()
fe4da5cc 1032{
1033 //
1034 // Initialises TPC detector after it has been created
1035 //
cfce8870 1036
c1637e41 1037 fIdSens=gMC->VolId("TPC_Strip"); // sensitive strip
fe4da5cc 1038
13a8c8d7 1039 printf("%s: *** TPC version 1 initialized***\n",ClassName());
1040
1041 // printf("TPC version 1 initialized\n");
fe4da5cc 1042}
1043
1044//_____________________________________________________________________________
1045void AliTPCv1::StepManager()
1046{
1047 //
1048 // Called at every step in the Time Projection Chamber
1049 //
0a6d8768 1050 Int_t copy, id, i;
e61fd20d 1051 Float_t hits[5];
fe4da5cc 1052 Int_t vol[2];
0a6d8768 1053 TLorentzVector p;
6a905708 1054 //
1283eee5 1055
c1637e41 1056 id = gMC->CurrentVolID(copy);
1057 if(id!=fIdSens) return;
0a6d8768 1058 if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
37831078 1059
1060 //
1061 // Only charged tracks entering the sensitive volume
fe4da5cc 1062 //
37831078 1063
c1637e41 1064 gMC->TrackPosition(p);
1065 Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1066 //
1067
1068 //
1069 Double_t angle = TMath::ACos(p[0]/r);
1070 angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle;
1071 //
1072 // angular segment, it is not a real sector number...
1073 //
1074 Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/
1075 fTPCParam->GetInnerAngle());
1076 // rotate to segment "0"
1077 Float_t cos,sin;
1078 fTPCParam->AdjustCosSin(sector,cos,sin);
1079 Float_t x1 = p[0]*cos + p[1]*sin;
1080 Float_t y1 = TMath::Abs(-p[0]*sin + p[1]*cos);
1081 // calculate real sector number...
1082 if (x1>fTPCParam->GetOuterRadiusLow()){
1083 sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/
1084 fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector();
1085 if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1);
1086 }
1087 else
1088 if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1);
1089 //
1090 // here I have a sector number
1091 //
1092 vol[0]=sector;
1093 //
1094 Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp();
1095 vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows;
1096 // row numbers are autonomous for lower and upper sectors
1097 if(vol[0] > fTPCParam->GetNInnerSector()) {
1098 vol[1] -= fTPCParam->GetNRowLow();
1099 }
1100 Double_t range = (sector<36) ? fTPCParam->GetYInner(vol[1]) :
1101 fTPCParam->GetYOuter(vol[1]);
1102 if(y1>range) return;
1103 if(vol[1] == 0){
37831078 1104
1105 // because Jouri wants to have this
1106
1107 gMC->TrackMomentum(p);
1108 hits[0]=p[0];
1109 hits[1]=p[1];
1110 hits[2]=p[2];
1111 hits[3]=0.; // this hit has no energy loss
e61fd20d 1112 // Get also the track time for pileup simulation
1113 hits[4]=gMC->TrackTime();
1114
c1637e41 1115 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); // M.I.
1116 }
1117 gMC->TrackPosition(p);
37831078 1118 for(i=0;i<3;++i) hits[i]=p[i];
1119 hits[3]=1; //I'd like to have something positive here (I.Belikov)
e61fd20d 1120 // Get also the track time for pileup simulation
1121 hits[4]=gMC->TrackTime();
1122
c1637e41 1123 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); // M.I.
37831078 1124
c1637e41 1125 }// track entering sensitive strip
37831078 1126
fe4da5cc 1127}
37831078 1128//_____________________________________________________________________________
1283eee5 1129
1130
1131