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Coverity fixes (Jens)
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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//
4b0fdcad 19///////////////////////////////////////////////////////////////////////////////
20// //
21// Time Projection Chamber version 3 -- detailed TPC and slow simulation //
37831078 22//
4b0fdcad 23//Begin_Html
24/*
25<img src="picts/AliTPCv3Class.gif">
26*/
27//End_Html
28// //
29// //
30///////////////////////////////////////////////////////////////////////////////
31
32#include <stdlib.h>
116cbefd 33
116cbefd 34#include <TInterpreter.h>
88cb7938 35#include <TLorentzVector.h>
4b0fdcad 36#include <TMath.h>
88cb7938 37#include <TVirtualMC.h>
38#include <TPDGCode.h>
d9e80aca 39#include <TString.h>
40#include <TSystem.h>
116cbefd 41
4b0fdcad 42#include "AliConst.h"
116cbefd 43#include "AliRun.h"
b40afa5e 44#include "AliMathBase.h"
cc80f89e 45#include "AliTPCDigitsArray.h"
4c475d27 46#include "AliTPCParam.h"
47#include "AliTPCParamSR.h"
4ed5dced 48#include "AliTPCTrackHitsV2.h"
116cbefd 49#include "AliTPCv3.h"
5d12ce38 50#include "AliMC.h"
c1637e41 51#include "TGeoManager.h"
52#include "TGeoVolume.h"
53#include "TGeoPcon.h"
54#include "TGeoTube.h"
55#include "TGeoPgon.h"
56#include "TGeoTrd1.h"
57#include "TGeoCompositeShape.h"
58#include "TGeoPara.h"
4b0fdcad 59
60ClassImp(AliTPCv3)
79575d04 61//_____________________________________________________________________________
62
179c6296 63 AliTPCv3::AliTPCv3():AliTPC(),fIdSens(0)
64{
79575d04 65
66 fHitType = 1;
67
68}
69
4b0fdcad 70//_____________________________________________________________________________
71AliTPCv3::AliTPCv3(const char *name, const char *title) :
179c6296 72 AliTPC(name, title), fIdSens(0)
4b0fdcad 73{
74 //
cc80f89e 75 // Standard constructor for Time Projection Chamber version 3
4b0fdcad 76 //
77
78 SetBufferSize(128000);
73042f01 79
80 if (fTPCParam)
81 fTPCParam->Write(fTPCParam->GetTitle());
79575d04 82
83 fHitType =1;
4b0fdcad 84}
85
86//_____________________________________________________________________________
87void AliTPCv3::CreateGeometry()
88{
89 //
cc80f89e 90 // Creation of the TPC coarse geometry (version 3)
37831078 91 // The whole drift volume is sensitive
cc80f89e 92 // Origin Marek Kowalski Cracow
4b0fdcad 93 //
94 //Begin_Html
95 /*
37831078 96 <img src="picts/AliTPCgif">
4b0fdcad 97 */
98 //End_Html
99 //Begin_Html
100 /*
37831078 101 <img src="picts/AliTPCv3Tree.gif">
4b0fdcad 102 */
103 //End_Html
c1637e41 104 //----------------------------------------------------------
105 // This geometry is written using TGeo class
106 // Firstly the shapes are defined, and only then the volumes
107 // What is recognized by the MC are volumes
108 //----------------------------------------------------------
37831078 109 //
c1637e41 110 // tpc - this will be the mother volume
37831078 111 //
1283eee5 112
37831078 113 //
c1637e41 114 // here I define a volume TPC
115 // retrive the medium name with "TPC_" as a leading string
4b0fdcad 116 //
8ad31ee5 117 TGeoPcon *tpc = new TGeoPcon(0.,360.,30); //30 sections
4b0fdcad 118 //
8ad31ee5 119 tpc->DefineSection(0,-289.6,77.,278.);
120 tpc->DefineSection(1,-262.1,77.,278.);
4b0fdcad 121 //
8ad31ee5 122 tpc->DefineSection(2,-262.1,83.1,278.);
123 tpc->DefineSection(3,-260.,83.1,278.);
4b0fdcad 124 //
8ad31ee5 125 tpc->DefineSection(4,-260.,70.,278.);
126 tpc->DefineSection(5,-259.6,70.,278.);
4b0fdcad 127 //
8ad31ee5 128 tpc->DefineSection(6,-259.6,68.1,278.);
129 tpc->DefineSection(7,-253.6,68.1,278.);
37831078 130 //
8ad31ee5 131 tpc->DefineSection(8,-253.6,68.,278.);
132 tpc->DefineSection(9,-74.0,60.8,278.);
37831078 133 //
8ad31ee5 134 tpc->DefineSection(10,-74.0,60.1,278.);
135 tpc->DefineSection(11,-73.3,60.1,278.);
79575d04 136 //
8ad31ee5 137 tpc->DefineSection(12,-73.3,56.9,278.);
138 tpc->DefineSection(13,-68.5,56.9,278.);
c1637e41 139 //
8ad31ee5 140 tpc->DefineSection(14,-68.5,60.,278.);
141 tpc->DefineSection(15,-64.7,60.,278.);
78134e48 142 //
8ad31ee5 143 tpc->DefineSection(16,-64.7,56.9,278.);
144 tpc->DefineSection(17,73.3,56.9,278.);
78134e48 145 //
8ad31ee5 146 tpc->DefineSection(18,73.3,60.1,278.);
147 tpc->DefineSection(19,74.0,60.1,278.);
4fb9bd37 148 //
8ad31ee5 149 tpc->DefineSection(20,74.0,60.8,278.);
150 tpc->DefineSection(21,253.6,65.5,278.);
151 tpc->DefineSection(22,253.6,65.6,278.);
152 tpc->DefineSection(23,259.6,65.6,278.);
4fb9bd37 153 //
8ad31ee5 154 tpc->DefineSection(24,259.6,70.0,278.);
155 tpc->DefineSection(25,260.,70.0,278.);
4fb9bd37 156 //
8ad31ee5 157 tpc->DefineSection(26,260.,83.1,278.);
158 tpc->DefineSection(27,262.1,83.1,278.);
4fb9bd37 159 //
8ad31ee5 160 tpc->DefineSection(28,262.1,77.,278);
161 tpc->DefineSection(29,289.6,77.,278.);
162
c1637e41 163 //
164 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
165 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
166 //
167 // drift volume - sensitive volume, extended beyond the
168 // endcaps, because of the alignment
169 //
170 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
171 dvol->DefineSection(0,-260.,74.5,264.4);
172 dvol->DefineSection(1,-253.6,74.5,264.4);
173 //
174 dvol->DefineSection(2,-253.6,76.6774,258.);
175 dvol->DefineSection(3,253.6,76.6774,258.);
176 //
177 dvol->DefineSection(4,253.6,74.5,264.4);
178 dvol->DefineSection(5,260.,74.5,264.4);
179 //
f3d601a5 180 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-2");
c1637e41 181 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
182 //
183 v1->AddNode(v9,1);
184 //
185 // outer insulator
186 //
187 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
188 //
189 tpco->DefineSection(0,-256.6,264.8,278.);
190 tpco->DefineSection(1,-253.6,264.8,278.);
191 //
192 tpco->DefineSection(2,-253.6,258.,278.);
193 tpco->DefineSection(3,250.6,258.,278.);
194 //
195 tpco->DefineSection(4,250.6,258.,275.5);
196 tpco->DefineSection(5,253.6,258.,275.5);
197 //
198 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
199 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
200 //
201 // outer containment vessel
202 //
203 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
204 //
205 tocv->DefineSection(0,-256.6,264.8,278.);
206 tocv->DefineSection(1,-253.6,264.8,278.);
207 //
208 tocv->DefineSection(2,-253.6,274.8124,278.);
209 tocv->DefineSection(3,247.6,274.8124,278.);
210 //
211 tocv->DefineSection(4,247.6,270.4,278.);
212 tocv->DefineSection(5,250.6,270.4,278.);
213 //
214 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
215 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
216 //
217 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
218 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
219 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
220 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
221 //
222 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
223 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
224 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
225 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
226 //
227 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
228 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
229 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
230 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
37831078 231
c1637e41 232 //-------------------------------------------------------
233 // Tpc Outer Field Cage
234 // daughters - composite (sandwich)
235 //-------------------------------------------------------
37831078 236
c1637e41 237 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
238 //
239 tofc->DefineSection(0,-253.6,258.,269.6);
240 tofc->DefineSection(1,-250.6,258.,269.6);
241 //
242 tofc->DefineSection(2,-250.6,258.,260.0676);
243 tofc->DefineSection(3,250.6,258.,260.0676);
244 //
245 tofc->DefineSection(4,250.6,258.,275.5);
246 tofc->DefineSection(5,253.6,258.,275.5);
247 //
248 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
249 //sandwich
250 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
251 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
252 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
253 //
254 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
255 //
256 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
257 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
258 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
259 //
260 // outer part - positioning
261 //
262 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
263 //
264 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
265 //
456cb019 266 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
c1637e41 267 //
268 v2->AddNode(v3,1); v2->AddNode(v4,1);
269 //
270 v1->AddNode(v2,1);
271 //-----------------------------------------------------------
37831078 272
37831078 273
37831078 274
37831078 275
37831078 276
37831078 277
c1637e41 278 //--------------------------------------------------------------------
279 // Tpc Inner INsulator (CO2)
280 // the cones, the central drum and the inner f.c. sandwich with a piece
281 // of the flane will be placed in the TPC
282 //--------------------------------------------------------------------
283 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
284 //
285 tpci->DefineSection(0,-253.6,68.4,76.6774);
286 tpci->DefineSection(1,-74.0,61.2,76.6774);
287 //
288 tpci->DefineSection(2,74.0,61.2,76.6774);
289 //
290 tpci->DefineSection(3,253.6,65.9,76.6774);
291 //
292 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
293 //
294 // now the inner field cage - only part of flanges (2 copies)
295 //
296 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
297 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
298 //
299 //---------------------------------------------------------
300 // Tpc Inner Containment vessel - Muon side
301 //---------------------------------------------------------
302 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
303 //
304 tcms->DefineSection(0,-259.1,68.1,74.2);
305 tcms->DefineSection(1,-253.6,68.1,74.2);
306 //
307 tcms->DefineSection(2,-253.6,68.1,68.4);
308 tcms->DefineSection(3,-74.0,60.9,61.2);
309 //
310 tcms->DefineSection(4,-74.0,60.1,61.2);
311 tcms->DefineSection(5,-73.3,60.1,61.2);
312 //
313 tcms->DefineSection(6,-73.3,56.9,61.2);
314 tcms->DefineSection(7,-73.0,56.9,61.2);
315 //
316 tcms->DefineSection(8,-73.0,56.9,58.8);
317 tcms->DefineSection(9,-71.3,56.9,58.8);
318 //
319 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
37831078 320 //-----------------------------------------------
c1637e41 321 // inner containment vessel - shaft side
37831078 322 //-----------------------------------------------
c1637e41 323 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
324 //
325 tcss->DefineSection(0,71.3,56.9,58.8);
326 tcss->DefineSection(1,73.0,56.9,58.8);
327 //
328 tcss->DefineSection(2,73.0,56.9,61.2);
329 tcss->DefineSection(3,73.3,56.9,61.2);
330 //
331 tcss->DefineSection(4,73.3,60.1,61.2);
332 tcss->DefineSection(5,74.0,60.1,61.2);
333 //
334 tcss->DefineSection(6,74.0,60.9,61.2);
335 tcss->DefineSection(7,253.6,65.6,65.9);
336 //
337 tcss->DefineSection(8,253.6,65.6,74.2);
338 tcss->DefineSection(9,258.1,65.6,74.2);
339 //
340 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
341 //-----------------------------------------------
342 // Inner field cage
343 // define 4 parts and make an assembly
344 //-----------------------------------------------
345 // part1 - Al - 2 copies
346 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
347 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
348 // sandwich - outermost parts - 2 copies
349 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
350 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
351 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
352 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
353 //
354 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
355 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
356 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
357 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
358 //
359 // middle parts - 2 copies
360 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
361 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
362 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
363 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
364 //
365 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
366 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
367 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
368 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
369 // central part - 1 copy
370 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
371 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
372 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
373 //
374 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
375 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
376 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
377 //
378 // inner part - positioning
379 //
380 // creating a sandwich
381 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
382 //
383 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
384 //
385 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
386 //
387 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
388 //
389 tv100->AddNode(tv10,1);
390 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
391 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
392 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
393 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
394 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
395 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
396 //
397 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
398 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
399 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
400 v9->AddNode(tv100,1);
401 //
402 // central drum
403 //
404 // flange + sandwich
405 //
406 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
407 cfl->DefineSection(0,-71.1,59.7,61.2);
408 cfl->DefineSection(1,-68.6,59.7,61.2);
409 //
410 cfl->DefineSection(2,-68.6,60.6324,61.2);
411 cfl->DefineSection(3,68.6,60.6324,61.2);
412 //
413 cfl->DefineSection(4,68.6,59.7,61.2);
414 cfl->DefineSection(5,71.1,59.7,61.2);
415 //
416 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
417 // sandwich
418 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
419 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
420 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
421 //
422 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
423 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
424 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
425 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
426 //
427 // seals for central drum 2 copies
428 //
429 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
430 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
431 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
78134e48 432 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
433 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
c1637e41 434 //
435 // seal collars
436 TGeoPcon *se = new TGeoPcon(0.,360.,6);
437 se->DefineSection(0,-72.8,59.7,61.2);
438 se->DefineSection(1,-72.3,59.7,61.2);
439 //
440 se->DefineSection(2,-72.3,58.85,61.2);
441 se->DefineSection(3,-71.6,58.85,61.2);
442 //
443 se->DefineSection(4,-71.6,59.7,61.2);
444 se->DefineSection(5,-71.3,59.7,61.2);
445 //
446 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
447 //
448 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
449 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
450 //
451 // define reflection matrix
452 //
4fa47888 453 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
c1637e41 454 //
455 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
456 //
a1ec4d07 457 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
458 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
c1637e41 459 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
460 //
461 // central membrane - 2 rings and a mylar membrane - assembly
462 //
463 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
464 TGeoTube *oh = new TGeoTube(250.,256.,.5);
465 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
466 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
467 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
468 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
469 //
470 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
471 cm->AddNode(ihv,1);
472 cm->AddNode(ohv,1);
473 cm->AddNode(memv,1);
474 v9->AddNode(cm,1);
475 //
476 // end caps - they are make as an assembly of single segments
477 // containing both readout chambers
478 //
d899e254 479 Double_t openingAngle = 10.*TMath::DegToRad();
c1637e41 480 Double_t thick=1.5; // rib
d899e254 481 Double_t shift = thick/TMath::Sin(openingAngle);
c1637e41 482 //
d899e254 483 Double_t lowEdge = 86.3; // hole in the wheel
484 Double_t upEdge = 240.4; // hole in the wheel
c1637e41 485 //
486 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
487 //
488 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
489 //
d899e254 490 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
491 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
c1637e41 492 //
d899e254 493 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
494 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
c1637e41 495 //
d899e254 496 Double_t ys = shift*TMath::Sin(openingAngle);
497 Double_t xs = shift*TMath::Cos(openingAngle);
c1637e41 498 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
499 tr->RegisterYourself();
500 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
501 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
502 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
503 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
504 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
505 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
506 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
507 //
508 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
509 //
510 // readout chambers
511 //
512 // IROC first
513 //
514 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
515 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
516 // empty space
517 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
518 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
519 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
520 //bars
521 Double_t tga = (19.8328-12.3742)/39.3;
522 Double_t xmin,xmax;
523 xmin = 9.55*tga+12.3742;
524 xmax = 9.95*tga+12.3742;
525 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
526 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
527 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
528 xmin=19.4*tga+12.3742;
529 xmax=19.9*tga+12.3742;
530 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
531 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
532 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
533 xmin=29.35*tga+12.3742;
534 xmax=29.75*tga+12.3742;
535 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
536 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
537 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
538 //
539 // holes for connectors
540 //
541 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
542 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
d9e80aca 543 TString fileName(gSystem->Getenv("ALICE_ROOT"));
544 fileName += "/TPC/conn_iroc.dat";
c1637e41 545 ifstream in;
d9e80aca 546 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 547 for(Int_t i =0;i<86;i++){
456cb019 548 Double_t y = 3.99;
c1637e41 549 Double_t x,z,ang;
550 in>>x>>z>>ang;
456cb019 551 z-=26.5;
c1637e41 552 TGeoRotation *rrr = new TGeoRotation();
553 rrr->RotateY(ang);
554 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
555 ibdv->AddNode(connv,i+1,trans);
556 }
557 in.close();
558 // "cap"
559 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
560 // "hole"
561 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
562 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
563 tr1->RegisterYourself();
564 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
565 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
566 //
567 // pad plane and wire fixations
568 //
569 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
570 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
571 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
572 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
573 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
574 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
575 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
576 //
577 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
578 //
579 iroc->AddNode(ibdv,1);
580 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
581 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
582 tga =(23.3521-14.5974)/49.65;
583 Double_t xx = 24.825*tga+14.5974-0.6;
584 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
585 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
586 //
587 // OROC
588 //
589 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
590 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
591 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
592 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
593 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
594 //horizontal bars
595 tga=(38.5084-20.2938)/99.3;
596 xmin=tga*10.2+20.2938;
597 xmax=tga*10.6+20.2938;
598 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
599 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
600 //
601 xmin=22.55*tga+20.2938;
602 xmax=24.15*tga+20.2938;
603 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
604 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
605 //
606 xmin=36.1*tga+20.2938;
607 xmax=36.5*tga+20.2938;
608 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
609 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
610 //
611 xmin=49.0*tga+20.2938;
612 xmax=50.6*tga+20.2938;
613 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
614 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
615 //
616 xmin=63.6*tga+20.2938;
617 xmax=64.0*tga+20.2938;
618 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
619 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
620 //
621 xmin=75.5*tga+20.2938;
622 xmax=77.15*tga+20.2938;
623 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
624 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
625 //
626 xmin=88.7*tga+20.2938;
627 xmax=89.1*tga+20.2938;
628 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
629 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
630 //
631 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
632 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
633 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
634 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
635 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
636 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
637 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
638 // vertical bars
639 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
640 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
641 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
642 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
643 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
644 //
645 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
646 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
647 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
648 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
649 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
650 //
651 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
652 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
653 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
654 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
655 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
656 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
657 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
658 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
659 //
660 // holes for connectors
661 //
d9e80aca 662 fileName = gSystem->Getenv("ALICE_ROOT");
663 fileName += "/TPC/conn_oroc.dat";
664 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 665 for(Int_t i =0;i<78;i++){
666 Double_t y =3.89;
667 Double_t x,z,ang;
668 Double_t x1,z1,x2,z2;
669 in>>x>>z>>ang;
670 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
671 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
672 //
673 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
674 //
675 TGeoRotation *rr = new TGeoRotation();
676 rr->RotateY(ang);
677 z1-=54.95;
678 z2-=54.95;
679 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
680 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
681 obdv->AddNode(connv,i+1,trans1);
682 obdv->AddNode(connv,i+79,trans2);
683 }
684 in.close();
685 // cap
686 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
687 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
688 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
689 tr5->RegisterYourself();
690 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
691 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
692 //
693 // pad plane and wire fixations
694 //
695 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
696 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
697 //
698 tga=(43.5239-23.3874)/114.2;
699 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
700 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
701 xx = 57.1*tga+23.3874-0.7;
702 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
703 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
704 //
705 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
706 //
707 oroc->AddNode(obdv,1);
708 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
709 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
710 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
711 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
712 //
713 // now iroc and oroc are placed into a sector...
714 //
a1ec4d07 715 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
716 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
c1637e41 717 TGeoRotation rot1("rot1",90.,90.,0.);
718 TGeoRotation rot2("rot2");
719 rot2.RotateY(10.);
720 TGeoRotation *rot = new TGeoRotation("rot");
721 *rot=rot1*rot2;
722 //
723 Double_t x0,y0;
d899e254 724 x0=110.2*TMath::Cos(openingAngle);
725 y0=110.2*TMath::Sin(openingAngle);
20527578 726 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
727 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
d899e254 728 x0=188.45*TMath::Cos(openingAngle);
729 y0=188.45*TMath::Sin(openingAngle);
20527578 730 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
731 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
c1637e41 732 //
a1ec4d07 733 // A-side
c1637e41 734 //
a1ec4d07 735 secta->AddNode(ch,1);
736 secta->AddNode(iroc,1,combi1a);
737 secta->AddNode(oroc,1,combi2a);
c1637e41 738 //
a1ec4d07 739 // C-side
740 //
741 sectc->AddNode(ch,1);
742 sectc->AddNode(iroc,1,combi1c);
743 sectc->AddNode(oroc,1,combi2c);
744 //
745 // now I try to make wheels...
746 //
747 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
748 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
c1637e41 749 //
750 for(Int_t i =0;i<18;i++){
751 Double_t phi = (20.*i);
752 TGeoRotation *r = new TGeoRotation();
753 r->RotateZ(phi);
a1ec4d07 754 wheela->AddNode(secta,i+1,r);
755 wheelc->AddNode(sectc,i+1,r);
c1637e41 756
757 }
758 // wheels in the drift volume!
c1637e41 759 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
a1ec4d07 760 v9->AddNode(wheela,1,combi3);
761 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
37831078 762
c1637e41 763 //_____________________________________________________________
764 // service support wheel
765 //_____________________________________________________________
766 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
767 sw->DefineSection(0,-4.,80.5,251.75);
768 sw->DefineSection(1,4.,80.5,251.75);
769 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
770 //
771 thick=1.;
d899e254 772 shift = thick/TMath::Sin(openingAngle);
c1637e41 773 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
774 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
775 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
776 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
777 //
74518339 778 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
779 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
780 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
781 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
782 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
783 //
784 shv->AddNode(elv,1);
785 //
d899e254 786 ys = shift*TMath::Sin(openingAngle);
787 xs = shift*TMath::Cos(openingAngle);
c1637e41 788 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
789 // cover
790 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
791 co->DefineSection(0,-0.5,77.,255.25);
792 co->DefineSection(1,0.5,77.,255.25);
793 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
794 // hole in a cover
795 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
d899e254 796 shift=4./TMath::Sin(openingAngle);
c1637e41 797 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
798 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
799 //
800 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
801 //
d899e254 802 ys = shift*TMath::Sin(openingAngle);
803 xs = shift*TMath::Cos(openingAngle);
c1637e41 804 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
805 //
806 // Sector as an Assembly
807 //
808 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
809 swhs->AddNode(swv,1);
810 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
811 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
812 //
813 // SSW as an Assembly of sectors
814 //
815 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
816 for(Int_t i =0;i<18;i++){
817 Double_t phi = (20.*i);
818 TGeoRotation *r = new TGeoRotation();
819 r->RotateZ(phi);
820 swheel->AddNode(swhs,i+1,r);
821 }
822 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
823 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
824 //
37831078 825 //----------------------------------------------------------
826 // TPc Support Rods - MAKROLON
827 //----------------------------------------------------------
c1637e41 828 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
829 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
78134e48 830 TGeoMedium *m10 = gGeoManager->GetMedium("TPC_Alumina");
831 TGeoMedium *m11 = gGeoManager->GetMedium("TPC_Peek");
832 TGeoMedium *m12 = gGeoManager->GetMedium("TPC_Water");
c1637e41 833 // upper and lower rods differ in length!
834 Double_t *upar;
835 upar=NULL;
836 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
837 upar=new Double_t [3];
838 upar[0]=1.8;
839 upar[1]=2.2;
840
841 //
842 //HV rods - makrolon + 0.58cm (diameter) Cu
ae4806ca 843 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
c1637e41 844 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
845 //
846 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
847 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
848 hvrv->AddNode(hvcv,1);
78134e48 849 //
850 // resistor rods
851 //
852 TGeoTube *cri = new TGeoTube(0.,0.45,126.64); //inner
853 TGeoTube *cro = new TGeoTube(0.,0.45,126.54); //outer
854 TGeoTube *cwi = new TGeoTube(0.,0.15,126.64); // water inner
855 TGeoTube *cwo = new TGeoTube(0.,0.15,126.54); // water outer
856 //
857 TGeoVolume *criv = new TGeoVolume("TPC_CR_I",cri,m10);
858 TGeoVolume *crov = new TGeoVolume("TPC_CR_O",cro,m10);
859 TGeoVolume *cwiv = new TGeoVolume("TPC_W_I",cwi,m11);
860 TGeoVolume *cwov = new TGeoVolume("TPC_W_O",cwo,m11);
861 //
862 // ceramic rod with water
863 //
864 criv->AddNode(cwiv,1);
865 crov->AddNode(cwov,1);
866 //
867 TGeoTube *pri =new TGeoTube(0.2,0.35,126.64); //inner
868 TGeoTube *pro = new TGeoTube(0.2,0.35,126.54); //outer
869 //
870 // peek rod
871 //
872 TGeoVolume *priv = new TGeoVolume("TPC_PR_I",pri,m12);
873 TGeoVolume *prov = new TGeoVolume("TPC_PR_O",pro,m12);
874 //
875 // resistor rods assembly
876 //
be53328e 877 TGeoRotation *rotr = new TGeoRotation("rotr");
878 rotr->RotateZ(-21.);
78134e48 879 //
880 TGeoTube *rri = new TGeoTube(1.8,2.2,126.64);//inner
881 TGeoTube *rro = new TGeoTube(1.8,2.2,126.54);//inner
882 //
883 TGeoVolume *rriv = new TGeoVolume("TPC_RR_I",rri,m6);
884 TGeoVolume *rrov = new TGeoVolume("TPC_RR_O",rro,m6);
885 //
a3d2be59 886 TGeoVolumeAssembly *rrin = new TGeoVolumeAssembly("TPC_RROD_I");
887 TGeoVolumeAssembly *rrou = new TGeoVolumeAssembly("TPC_RROD_O");
888 rrin->AddNode(rriv,1);
889 rrin->AddNode(criv,1,new TGeoTranslation(0.5,0.866, 0.));
890 rrin->AddNode(criv,2,new TGeoTranslation(0.5,-0.866, 0.));
891 rrin->AddNode(priv,1);
892 //
893 rrou->AddNode(rrov,1);
894 rrou->AddNode(crov,1,new TGeoTranslation(0.5,0.866, 0.));
895 rrou->AddNode(crov,2,new TGeoTranslation(0.5,-0.866, 0.));
896 rrou->AddNode(prov,1);
7281dc07 897 for(Int_t i=0;i<18;i++){
c1637e41 898 Double_t angle,x,y;
899 Double_t z,r;
900 angle=TMath::DegToRad()*20.*(Double_t)i;
901 r=81.5;
902 x=r * TMath::Cos(angle);
903 y=r * TMath::Sin(angle);
904 upar[2]=126.64; //lower
905 z= 126.96;
78134e48 906 //
907 if(i==3){
be53328e 908 v9->AddNode(rrin,1,new TGeoCombiTrans(x,y,z,rotr)); //A
909 v9->AddNode(rrin,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 910 }
911 else {
912 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
913 gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
c1637e41 914 }
78134e48 915
916
917 //
c1637e41 918 r=254.25;
919 x=r * TMath::Cos(angle);
920 y=r * TMath::Sin(angle);
921 upar[2]=126.54; //upper
922 z=127.06;
78134e48 923 if(i==15){
5042ab7d 924 //v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));//A-side only
925 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,127.14));//A-side only
78134e48 926 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
927 }
928 else if(i==11){
be53328e 929 v9->AddNode(rrou,1,new TGeoCombiTrans(x,y,z,rotr)); //A
930 v9->AddNode(rrou,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 931 }
932 else{
933 //
934 gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
935 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
936 }
37831078 937 }
938
bde68ab0 939 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
940 alice->AddNode(v1,1);
941
37831078 942
943
944} // end of function
37831078 945
37831078 946
947//_____________________________________________________________________________
948void AliTPCv3::CreateMaterials()
949{
950 //
951 // Define materials for version 2 of the Time Projection Chamber
952 //
953
954
955 //
956 AliTPC::CreateMaterials();
957}
958
959//_____________________________________________________________________________
960void AliTPCv3::Init()
961{
962 //
963 // Initialises version 3 of the TPC after that it has been built
964 //
8d888a91 965 //Int_t *idtmed = fIdtmed->GetArray();
4b0fdcad 966
967 AliTPC::Init();
968
c1637e41 969 fIdSens=gMC->VolId("TPC_Drift"); // drift gas as a sensitive volume
4b0fdcad 970
d9888f70 971 gMC->SetMaxNStep(-30000); // max. number of steps increased
4b0fdcad 972
098dfc1a 973 // specific energy loss is now set in galice.cuts
4b0fdcad 974
13a8c8d7 975 printf("%s: *** TPC version 3 initialized***\n",ClassName());
976
977 printf("%s: Maximum number of steps = %d\n",ClassName(),gMC->GetMaxNStep());
978
979 // printf("*** TPC version 3 initialized ***\n");
980 // printf("Maximum number of steps = %d\n",gMC->GetMaxNStep());
4b0fdcad 981
982 //
983
984}
985
986//_____________________________________________________________________________
987void AliTPCv3::StepManager()
988{
989 //
990 // Called for every step in the Time Projection Chamber
991 //
992
993 //
994 // parameters used for the energy loss calculations
995 //
73042f01 996 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
997 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
998 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
4b0fdcad 999
1000
73042f01 1001 const Float_t kbig = 1.e10;
4b0fdcad 1002
1003 Int_t id,copy;
1004 TLorentzVector pos;
e61fd20d 1005 Float_t hits[5];
4b0fdcad 1006 Int_t vol[2];
4b0fdcad 1007
1008 vol[1]=0;
1009 vol[0]=0;
1010
1011 //
1012
73042f01 1013 gMC->SetMaxStep(kbig);
4b0fdcad 1014
1015 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1016
1017 Float_t charge = gMC->TrackCharge();
1018
1019 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1020
1021
1022 id=gMC->CurrentVolID(copy);
c1637e41 1023
4b0fdcad 1024
37831078 1025 if (id != fIdSens) return;
4b0fdcad 1026
1027 //
1028 // charged particle is in the sensitive volume
1029 //
1030
1031 if(gMC->TrackStep() > 0) {
1032
1033
73042f01 1034 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
4b0fdcad 1035 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1036
1037 gMC->TrackPosition(pos);
1038 hits[0]=pos[0];
1039 hits[1]=pos[1];
1040 hits[2]=pos[2];
1041
e61fd20d 1042 // Get also the track time for pileup simulation
1043 hits[4]=gMC->TrackTime();
1044
4b0fdcad 1045 //
1046 // check the selected side of the TPC
1047 //
1048
1049 if(fSide && fSide*hits[2]<=0.) return;
1050
1051 hits[3]=(Float_t)nel;
1052
1053 // Add this hit
1054
5d12ce38 1055 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); //MI change
4b0fdcad 1056
1057 }
1058
1059 // Stemax calculation for the next step
1060
1061 Float_t pp;
1062 TLorentzVector mom;
1063 gMC->TrackMomentum(mom);
1064 Float_t ptot=mom.Rho();
73042f01 1065 Float_t betaGamma = ptot/gMC->TrackMass();
4b0fdcad 1066
69e40cce 1067 Int_t pid=gMC->TrackPid();
cc80f89e 1068 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
4b0fdcad 1069 {
73042f01 1070 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
4b0fdcad 1071 }
1072 else
1073 {
7b562732 1074 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3);
b40afa5e 1075 pp=kprim*AliMathBase::BetheBlochAleph(betaGamma);
4b0fdcad 1076 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1077 }
1078
b9d0a01d 1079 Double_t rnd = gMC->GetRandom()->Rndm();
4b0fdcad 1080
1081 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1082
1083}