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Assign track label pi to the raw digits, to be consitent with other detectors.
[u/mrichter/AliRoot.git] / TPC / AliTPCv3.cxx
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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"
c5d5037c 53#include "TGeoCone.h"
c1637e41 54#include "TGeoPcon.h"
55#include "TGeoTube.h"
56#include "TGeoPgon.h"
57#include "TGeoTrd1.h"
58#include "TGeoCompositeShape.h"
59#include "TGeoPara.h"
4b0fdcad 60
61ClassImp(AliTPCv3)
79575d04 62//_____________________________________________________________________________
63
179c6296 64 AliTPCv3::AliTPCv3():AliTPC(),fIdSens(0)
65{
79575d04 66
67 fHitType = 1;
68
69}
70
4b0fdcad 71//_____________________________________________________________________________
72AliTPCv3::AliTPCv3(const char *name, const char *title) :
179c6296 73 AliTPC(name, title), fIdSens(0)
4b0fdcad 74{
75 //
cc80f89e 76 // Standard constructor for Time Projection Chamber version 3
4b0fdcad 77 //
78
79 SetBufferSize(128000);
73042f01 80
81 if (fTPCParam)
82 fTPCParam->Write(fTPCParam->GetTitle());
79575d04 83
84 fHitType =1;
4b0fdcad 85}
86
87//_____________________________________________________________________________
88void AliTPCv3::CreateGeometry()
89{
90 //
cc80f89e 91 // Creation of the TPC coarse geometry (version 3)
37831078 92 // The whole drift volume is sensitive
cc80f89e 93 // Origin Marek Kowalski Cracow
4b0fdcad 94 //
95 //Begin_Html
96 /*
37831078 97 <img src="picts/AliTPCgif">
4b0fdcad 98 */
99 //End_Html
100 //Begin_Html
101 /*
37831078 102 <img src="picts/AliTPCv3Tree.gif">
4b0fdcad 103 */
104 //End_Html
c1637e41 105 //----------------------------------------------------------
106 // This geometry is written using TGeo class
107 // Firstly the shapes are defined, and only then the volumes
108 // What is recognized by the MC are volumes
109 //----------------------------------------------------------
37831078 110 //
c1637e41 111 // tpc - this will be the mother volume
37831078 112 //
1283eee5 113
37831078 114 //
c1637e41 115 // here I define a volume TPC
116 // retrive the medium name with "TPC_" as a leading string
4b0fdcad 117 //
8ad31ee5 118 TGeoPcon *tpc = new TGeoPcon(0.,360.,30); //30 sections
4b0fdcad 119 //
8ad31ee5 120 tpc->DefineSection(0,-289.6,77.,278.);
121 tpc->DefineSection(1,-262.1,77.,278.);
4b0fdcad 122 //
8ad31ee5 123 tpc->DefineSection(2,-262.1,83.1,278.);
124 tpc->DefineSection(3,-260.,83.1,278.);
4b0fdcad 125 //
8ad31ee5 126 tpc->DefineSection(4,-260.,70.,278.);
127 tpc->DefineSection(5,-259.6,70.,278.);
4b0fdcad 128 //
8ad31ee5 129 tpc->DefineSection(6,-259.6,68.1,278.);
130 tpc->DefineSection(7,-253.6,68.1,278.);
37831078 131 //
c5d5037c 132 tpc->DefineSection(8,-253.6,67.88,278.);//hs
133 tpc->DefineSection(9,-74.0,60.68,278.);// hs
37831078 134 //
8ad31ee5 135 tpc->DefineSection(10,-74.0,60.1,278.);
136 tpc->DefineSection(11,-73.3,60.1,278.);
79575d04 137 //
8ad31ee5 138 tpc->DefineSection(12,-73.3,56.9,278.);
139 tpc->DefineSection(13,-68.5,56.9,278.);
c1637e41 140 //
8ad31ee5 141 tpc->DefineSection(14,-68.5,60.,278.);
142 tpc->DefineSection(15,-64.7,60.,278.);
78134e48 143 //
8ad31ee5 144 tpc->DefineSection(16,-64.7,56.9,278.);
145 tpc->DefineSection(17,73.3,56.9,278.);
78134e48 146 //
8ad31ee5 147 tpc->DefineSection(18,73.3,60.1,278.);
148 tpc->DefineSection(19,74.0,60.1,278.);
4fb9bd37 149 //
c5d5037c 150 tpc->DefineSection(20,74.0,60.68,278.);// hs
151 tpc->DefineSection(21,253.6,65.38,278.);// hs
152 //
8ad31ee5 153 tpc->DefineSection(22,253.6,65.6,278.);
154 tpc->DefineSection(23,259.6,65.6,278.);
4fb9bd37 155 //
8ad31ee5 156 tpc->DefineSection(24,259.6,70.0,278.);
157 tpc->DefineSection(25,260.,70.0,278.);
4fb9bd37 158 //
8ad31ee5 159 tpc->DefineSection(26,260.,83.1,278.);
160 tpc->DefineSection(27,262.1,83.1,278.);
4fb9bd37 161 //
8ad31ee5 162 tpc->DefineSection(28,262.1,77.,278);
163 tpc->DefineSection(29,289.6,77.,278.);
164
c1637e41 165 //
166 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
167 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
168 //
169 // drift volume - sensitive volume, extended beyond the
170 // endcaps, because of the alignment
171 //
172 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
173 dvol->DefineSection(0,-260.,74.5,264.4);
174 dvol->DefineSection(1,-253.6,74.5,264.4);
175 //
176 dvol->DefineSection(2,-253.6,76.6774,258.);
177 dvol->DefineSection(3,253.6,76.6774,258.);
178 //
179 dvol->DefineSection(4,253.6,74.5,264.4);
180 dvol->DefineSection(5,260.,74.5,264.4);
181 //
f3d601a5 182 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-2");
c1637e41 183 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
184 //
185 v1->AddNode(v9,1);
186 //
187 // outer insulator
188 //
189 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
190 //
191 tpco->DefineSection(0,-256.6,264.8,278.);
192 tpco->DefineSection(1,-253.6,264.8,278.);
193 //
194 tpco->DefineSection(2,-253.6,258.,278.);
195 tpco->DefineSection(3,250.6,258.,278.);
196 //
197 tpco->DefineSection(4,250.6,258.,275.5);
198 tpco->DefineSection(5,253.6,258.,275.5);
199 //
200 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
201 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
202 //
203 // outer containment vessel
204 //
205 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
206 //
207 tocv->DefineSection(0,-256.6,264.8,278.);
208 tocv->DefineSection(1,-253.6,264.8,278.);
209 //
210 tocv->DefineSection(2,-253.6,274.8124,278.);
211 tocv->DefineSection(3,247.6,274.8124,278.);
212 //
213 tocv->DefineSection(4,247.6,270.4,278.);
214 tocv->DefineSection(5,250.6,270.4,278.);
215 //
216 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
217 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
218 //
219 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
220 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
221 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
222 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
223 //
224 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
225 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
226 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
227 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
228 //
229 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
230 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
231 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
232 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
c5d5037c 233 //
234 TGeoMedium *mhs = gGeoManager->GetMedium("TPC_Steel");
235 TGeoMedium *m12 = gGeoManager->GetMedium("TPC_Water");
c1637e41 236 //-------------------------------------------------------
237 // Tpc Outer Field Cage
238 // daughters - composite (sandwich)
239 //-------------------------------------------------------
37831078 240
c1637e41 241 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
242 //
243 tofc->DefineSection(0,-253.6,258.,269.6);
244 tofc->DefineSection(1,-250.6,258.,269.6);
245 //
246 tofc->DefineSection(2,-250.6,258.,260.0676);
247 tofc->DefineSection(3,250.6,258.,260.0676);
248 //
249 tofc->DefineSection(4,250.6,258.,275.5);
250 tofc->DefineSection(5,253.6,258.,275.5);
251 //
252 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
253 //sandwich
254 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
255 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
256 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
257 //
258 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
259 //
260 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
261 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
262 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
263 //
264 // outer part - positioning
265 //
266 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
267 //
268 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
269 //
456cb019 270 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
c1637e41 271 //
272 v2->AddNode(v3,1); v2->AddNode(v4,1);
273 //
274 v1->AddNode(v2,1);
275 //-----------------------------------------------------------
37831078 276
37831078 277
37831078 278
37831078 279
37831078 280
37831078 281
c1637e41 282 //--------------------------------------------------------------------
283 // Tpc Inner INsulator (CO2)
284 // the cones, the central drum and the inner f.c. sandwich with a piece
285 // of the flane will be placed in the TPC
286 //--------------------------------------------------------------------
287 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
288 //
289 tpci->DefineSection(0,-253.6,68.4,76.6774);
290 tpci->DefineSection(1,-74.0,61.2,76.6774);
291 //
292 tpci->DefineSection(2,74.0,61.2,76.6774);
293 //
294 tpci->DefineSection(3,253.6,65.9,76.6774);
295 //
296 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
297 //
298 // now the inner field cage - only part of flanges (2 copies)
299 //
300 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
301 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
302 //
303 //---------------------------------------------------------
304 // Tpc Inner Containment vessel - Muon side
305 //---------------------------------------------------------
306 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
307 //
308 tcms->DefineSection(0,-259.1,68.1,74.2);
309 tcms->DefineSection(1,-253.6,68.1,74.2);
310 //
311 tcms->DefineSection(2,-253.6,68.1,68.4);
312 tcms->DefineSection(3,-74.0,60.9,61.2);
313 //
314 tcms->DefineSection(4,-74.0,60.1,61.2);
315 tcms->DefineSection(5,-73.3,60.1,61.2);
316 //
317 tcms->DefineSection(6,-73.3,56.9,61.2);
318 tcms->DefineSection(7,-73.0,56.9,61.2);
319 //
320 tcms->DefineSection(8,-73.0,56.9,58.8);
321 tcms->DefineSection(9,-71.3,56.9,58.8);
322 //
323 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
c5d5037c 324 //------------------------------------------------
325 // Heat screen muon side
326 //------------------------------------------------
327
328 TGeoCone *thsm = new TGeoCone(89.8,67.88,68.1,60.68,60.9);
329 TGeoCone *thsmw = new TGeoCone(89.8,67.94,68.04,60.74,60.84);
330 TGeoVolume *hvsm = new TGeoVolume("TPC_HSM",thsm,mhs); //steel
331 TGeoVolume *hvsmw = new TGeoVolume("TPC_HSMW",thsmw,m12); //water
332 // assembly heat screen muon
333 hvsm->AddNode(hvsmw,1);
37831078 334 //-----------------------------------------------
c1637e41 335 // inner containment vessel - shaft side
37831078 336 //-----------------------------------------------
c1637e41 337 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
338 //
339 tcss->DefineSection(0,71.3,56.9,58.8);
340 tcss->DefineSection(1,73.0,56.9,58.8);
341 //
342 tcss->DefineSection(2,73.0,56.9,61.2);
343 tcss->DefineSection(3,73.3,56.9,61.2);
344 //
345 tcss->DefineSection(4,73.3,60.1,61.2);
346 tcss->DefineSection(5,74.0,60.1,61.2);
347 //
348 tcss->DefineSection(6,74.0,60.9,61.2);
349 tcss->DefineSection(7,253.6,65.6,65.9);
350 //
351 tcss->DefineSection(8,253.6,65.6,74.2);
352 tcss->DefineSection(9,258.1,65.6,74.2);
353 //
354 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
c5d5037c 355 //-------------------------------------------------
356 // Heat screen shaft side
357 //--------------------------------------------------
358 TGeoCone *thss = new TGeoCone(89.8,60.68,60.9,65.38,65.6);
359 TGeoCone *thssw = new TGeoCone(89.8,60.74,60.84,65.44,65.54);
360 TGeoVolume *hvss = new TGeoVolume("TPC_HSS",thss,mhs); //steel
361 TGeoVolume *hvssw = new TGeoVolume("TPC_HSSW",thssw,m12); //water
362 //assembly heat screen shaft
363 hvss->AddNode(hvssw,1);
c1637e41 364 //-----------------------------------------------
365 // Inner field cage
366 // define 4 parts and make an assembly
367 //-----------------------------------------------
368 // part1 - Al - 2 copies
369 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
370 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
371 // sandwich - outermost parts - 2 copies
372 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
373 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
374 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
375 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
376 //
377 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
378 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
379 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
380 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
381 //
382 // middle parts - 2 copies
383 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
384 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
385 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
386 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
387 //
388 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
389 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
390 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
391 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
392 // central part - 1 copy
393 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
394 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
395 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
396 //
397 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
398 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
399 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
400 //
401 // inner part - positioning
402 //
403 // creating a sandwich
404 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
405 //
406 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
407 //
408 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
409 //
410 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
411 //
412 tv100->AddNode(tv10,1);
413 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
414 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
415 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
416 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
417 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
418 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
419 //
420 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
421 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
422 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
c5d5037c 423 v1->AddNode(hvsm,1,new TGeoTranslation(0.,0.,-163.8));
424 v1->AddNode(hvss,1,new TGeoTranslation(0.,0.,163.8));
c1637e41 425 v9->AddNode(tv100,1);
426 //
427 // central drum
428 //
429 // flange + sandwich
430 //
431 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
432 cfl->DefineSection(0,-71.1,59.7,61.2);
433 cfl->DefineSection(1,-68.6,59.7,61.2);
434 //
435 cfl->DefineSection(2,-68.6,60.6324,61.2);
436 cfl->DefineSection(3,68.6,60.6324,61.2);
437 //
438 cfl->DefineSection(4,68.6,59.7,61.2);
439 cfl->DefineSection(5,71.1,59.7,61.2);
440 //
441 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
442 // sandwich
443 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
444 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
445 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
446 //
447 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
448 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
449 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
450 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
451 //
452 // seals for central drum 2 copies
453 //
454 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
455 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
456 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
78134e48 457 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
458 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
c1637e41 459 //
460 // seal collars
461 TGeoPcon *se = new TGeoPcon(0.,360.,6);
462 se->DefineSection(0,-72.8,59.7,61.2);
463 se->DefineSection(1,-72.3,59.7,61.2);
464 //
465 se->DefineSection(2,-72.3,58.85,61.2);
466 se->DefineSection(3,-71.6,58.85,61.2);
467 //
468 se->DefineSection(4,-71.6,59.7,61.2);
469 se->DefineSection(5,-71.3,59.7,61.2);
470 //
471 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
472 //
473 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
474 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
475 //
476 // define reflection matrix
477 //
4fa47888 478 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
c1637e41 479 //
480 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
481 //
a1ec4d07 482 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
483 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
c1637e41 484 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
485 //
486 // central membrane - 2 rings and a mylar membrane - assembly
487 //
488 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
489 TGeoTube *oh = new TGeoTube(250.,256.,.5);
490 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
491 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
492 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
493 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
494 //
495 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
496 cm->AddNode(ihv,1);
497 cm->AddNode(ohv,1);
498 cm->AddNode(memv,1);
499 v9->AddNode(cm,1);
500 //
501 // end caps - they are make as an assembly of single segments
502 // containing both readout chambers
503 //
d899e254 504 Double_t openingAngle = 10.*TMath::DegToRad();
c1637e41 505 Double_t thick=1.5; // rib
d899e254 506 Double_t shift = thick/TMath::Sin(openingAngle);
c1637e41 507 //
d899e254 508 Double_t lowEdge = 86.3; // hole in the wheel
509 Double_t upEdge = 240.4; // hole in the wheel
c1637e41 510 //
511 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
512 //
513 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
514 //
d899e254 515 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
516 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
c1637e41 517 //
d899e254 518 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
519 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
c1637e41 520 //
d899e254 521 Double_t ys = shift*TMath::Sin(openingAngle);
522 Double_t xs = shift*TMath::Cos(openingAngle);
c1637e41 523 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
524 tr->RegisterYourself();
525 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
526 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
527 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
528 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
529 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
530 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
531 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
532 //
533 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
534 //
535 // readout chambers
536 //
537 // IROC first
538 //
539 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
540 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
541 // empty space
542 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
543 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
544 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
545 //bars
546 Double_t tga = (19.8328-12.3742)/39.3;
547 Double_t xmin,xmax;
548 xmin = 9.55*tga+12.3742;
549 xmax = 9.95*tga+12.3742;
550 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
551 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
552 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
553 xmin=19.4*tga+12.3742;
554 xmax=19.9*tga+12.3742;
555 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
556 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
557 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
558 xmin=29.35*tga+12.3742;
559 xmax=29.75*tga+12.3742;
560 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
561 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
562 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
563 //
564 // holes for connectors
565 //
566 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
567 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
d9e80aca 568 TString fileName(gSystem->Getenv("ALICE_ROOT"));
569 fileName += "/TPC/conn_iroc.dat";
c1637e41 570 ifstream in;
d9e80aca 571 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 572 for(Int_t i =0;i<86;i++){
456cb019 573 Double_t y = 3.99;
c1637e41 574 Double_t x,z,ang;
575 in>>x>>z>>ang;
456cb019 576 z-=26.5;
c1637e41 577 TGeoRotation *rrr = new TGeoRotation();
578 rrr->RotateY(ang);
579 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
580 ibdv->AddNode(connv,i+1,trans);
581 }
582 in.close();
583 // "cap"
584 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
585 // "hole"
586 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
587 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
588 tr1->RegisterYourself();
589 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
590 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
591 //
592 // pad plane and wire fixations
593 //
594 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
595 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
596 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
597 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
598 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
599 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
600 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
601 //
602 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
603 //
604 iroc->AddNode(ibdv,1);
605 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
606 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
607 tga =(23.3521-14.5974)/49.65;
608 Double_t xx = 24.825*tga+14.5974-0.6;
609 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
610 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
611 //
612 // OROC
613 //
614 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
615 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
616 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
617 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
618 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
619 //horizontal bars
620 tga=(38.5084-20.2938)/99.3;
621 xmin=tga*10.2+20.2938;
622 xmax=tga*10.6+20.2938;
623 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
624 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
625 //
626 xmin=22.55*tga+20.2938;
627 xmax=24.15*tga+20.2938;
628 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
629 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
630 //
631 xmin=36.1*tga+20.2938;
632 xmax=36.5*tga+20.2938;
633 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
634 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
635 //
636 xmin=49.0*tga+20.2938;
637 xmax=50.6*tga+20.2938;
638 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
639 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
640 //
641 xmin=63.6*tga+20.2938;
642 xmax=64.0*tga+20.2938;
643 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
644 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
645 //
646 xmin=75.5*tga+20.2938;
647 xmax=77.15*tga+20.2938;
648 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
649 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
650 //
651 xmin=88.7*tga+20.2938;
652 xmax=89.1*tga+20.2938;
653 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
654 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
655 //
656 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
657 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
658 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
659 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
660 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
661 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
662 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
663 // vertical bars
664 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
665 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
666 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
667 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
668 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
669 //
670 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
671 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
672 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
673 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
674 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
675 //
676 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
677 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
678 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
679 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
680 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
681 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
682 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
683 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
684 //
685 // holes for connectors
686 //
d9e80aca 687 fileName = gSystem->Getenv("ALICE_ROOT");
688 fileName += "/TPC/conn_oroc.dat";
689 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 690 for(Int_t i =0;i<78;i++){
691 Double_t y =3.89;
692 Double_t x,z,ang;
693 Double_t x1,z1,x2,z2;
694 in>>x>>z>>ang;
695 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
696 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
697 //
698 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
699 //
700 TGeoRotation *rr = new TGeoRotation();
701 rr->RotateY(ang);
702 z1-=54.95;
703 z2-=54.95;
704 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
705 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
706 obdv->AddNode(connv,i+1,trans1);
707 obdv->AddNode(connv,i+79,trans2);
708 }
709 in.close();
710 // cap
711 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
712 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
713 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
714 tr5->RegisterYourself();
715 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
716 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
717 //
718 // pad plane and wire fixations
719 //
720 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
721 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
722 //
723 tga=(43.5239-23.3874)/114.2;
724 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
725 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
726 xx = 57.1*tga+23.3874-0.7;
727 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
728 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
729 //
730 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
731 //
732 oroc->AddNode(obdv,1);
733 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
734 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
735 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
736 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
737 //
738 // now iroc and oroc are placed into a sector...
739 //
a1ec4d07 740 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
741 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
c1637e41 742 TGeoRotation rot1("rot1",90.,90.,0.);
743 TGeoRotation rot2("rot2");
744 rot2.RotateY(10.);
745 TGeoRotation *rot = new TGeoRotation("rot");
746 *rot=rot1*rot2;
747 //
748 Double_t x0,y0;
d899e254 749 x0=110.2*TMath::Cos(openingAngle);
750 y0=110.2*TMath::Sin(openingAngle);
20527578 751 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
752 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
d899e254 753 x0=188.45*TMath::Cos(openingAngle);
754 y0=188.45*TMath::Sin(openingAngle);
20527578 755 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
756 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
c1637e41 757 //
a1ec4d07 758 // A-side
c1637e41 759 //
a1ec4d07 760 secta->AddNode(ch,1);
761 secta->AddNode(iroc,1,combi1a);
762 secta->AddNode(oroc,1,combi2a);
c1637e41 763 //
a1ec4d07 764 // C-side
765 //
766 sectc->AddNode(ch,1);
767 sectc->AddNode(iroc,1,combi1c);
768 sectc->AddNode(oroc,1,combi2c);
769 //
770 // now I try to make wheels...
771 //
772 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
773 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
c1637e41 774 //
775 for(Int_t i =0;i<18;i++){
776 Double_t phi = (20.*i);
777 TGeoRotation *r = new TGeoRotation();
778 r->RotateZ(phi);
a1ec4d07 779 wheela->AddNode(secta,i+1,r);
780 wheelc->AddNode(sectc,i+1,r);
c1637e41 781
782 }
783 // wheels in the drift volume!
c1637e41 784 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
a1ec4d07 785 v9->AddNode(wheela,1,combi3);
786 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
37831078 787
c1637e41 788 //_____________________________________________________________
789 // service support wheel
790 //_____________________________________________________________
791 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
792 sw->DefineSection(0,-4.,80.5,251.75);
793 sw->DefineSection(1,4.,80.5,251.75);
794 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
795 //
796 thick=1.;
d899e254 797 shift = thick/TMath::Sin(openingAngle);
c1637e41 798 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
799 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
800 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
801 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
802 //
74518339 803 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
804 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
805 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
806 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
807 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
808 //
809 shv->AddNode(elv,1);
810 //
d899e254 811 ys = shift*TMath::Sin(openingAngle);
812 xs = shift*TMath::Cos(openingAngle);
c1637e41 813 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
814 // cover
815 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
816 co->DefineSection(0,-0.5,77.,255.25);
817 co->DefineSection(1,0.5,77.,255.25);
818 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
819 // hole in a cover
820 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
d899e254 821 shift=4./TMath::Sin(openingAngle);
c1637e41 822 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
823 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
824 //
825 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
826 //
d899e254 827 ys = shift*TMath::Sin(openingAngle);
828 xs = shift*TMath::Cos(openingAngle);
c1637e41 829 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
830 //
831 // Sector as an Assembly
832 //
833 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
834 swhs->AddNode(swv,1);
835 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
836 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
837 //
838 // SSW as an Assembly of sectors
839 //
840 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
841 for(Int_t i =0;i<18;i++){
842 Double_t phi = (20.*i);
843 TGeoRotation *r = new TGeoRotation();
844 r->RotateZ(phi);
845 swheel->AddNode(swhs,i+1,r);
846 }
847 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
848 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
849 //
37831078 850 //----------------------------------------------------------
851 // TPc Support Rods - MAKROLON
852 //----------------------------------------------------------
c1637e41 853 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
854 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
78134e48 855 TGeoMedium *m10 = gGeoManager->GetMedium("TPC_Alumina");
856 TGeoMedium *m11 = gGeoManager->GetMedium("TPC_Peek");
c1637e41 857 // upper and lower rods differ in length!
858 Double_t *upar;
859 upar=NULL;
860 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
861 upar=new Double_t [3];
862 upar[0]=1.8;
863 upar[1]=2.2;
864
865 //
866 //HV rods - makrolon + 0.58cm (diameter) Cu
ae4806ca 867 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
c1637e41 868 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
869 //
870 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
871 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
872 hvrv->AddNode(hvcv,1);
78134e48 873 //
874 // resistor rods
875 //
876 TGeoTube *cri = new TGeoTube(0.,0.45,126.64); //inner
877 TGeoTube *cro = new TGeoTube(0.,0.45,126.54); //outer
878 TGeoTube *cwi = new TGeoTube(0.,0.15,126.64); // water inner
879 TGeoTube *cwo = new TGeoTube(0.,0.15,126.54); // water outer
880 //
881 TGeoVolume *criv = new TGeoVolume("TPC_CR_I",cri,m10);
882 TGeoVolume *crov = new TGeoVolume("TPC_CR_O",cro,m10);
883 TGeoVolume *cwiv = new TGeoVolume("TPC_W_I",cwi,m11);
884 TGeoVolume *cwov = new TGeoVolume("TPC_W_O",cwo,m11);
885 //
886 // ceramic rod with water
887 //
888 criv->AddNode(cwiv,1);
889 crov->AddNode(cwov,1);
890 //
891 TGeoTube *pri =new TGeoTube(0.2,0.35,126.64); //inner
892 TGeoTube *pro = new TGeoTube(0.2,0.35,126.54); //outer
893 //
894 // peek rod
895 //
896 TGeoVolume *priv = new TGeoVolume("TPC_PR_I",pri,m12);
897 TGeoVolume *prov = new TGeoVolume("TPC_PR_O",pro,m12);
898 //
899 // resistor rods assembly
900 //
be53328e 901 TGeoRotation *rotr = new TGeoRotation("rotr");
902 rotr->RotateZ(-21.);
78134e48 903 //
904 TGeoTube *rri = new TGeoTube(1.8,2.2,126.64);//inner
905 TGeoTube *rro = new TGeoTube(1.8,2.2,126.54);//inner
906 //
907 TGeoVolume *rriv = new TGeoVolume("TPC_RR_I",rri,m6);
908 TGeoVolume *rrov = new TGeoVolume("TPC_RR_O",rro,m6);
909 //
a3d2be59 910 TGeoVolumeAssembly *rrin = new TGeoVolumeAssembly("TPC_RROD_I");
911 TGeoVolumeAssembly *rrou = new TGeoVolumeAssembly("TPC_RROD_O");
912 rrin->AddNode(rriv,1);
913 rrin->AddNode(criv,1,new TGeoTranslation(0.5,0.866, 0.));
914 rrin->AddNode(criv,2,new TGeoTranslation(0.5,-0.866, 0.));
915 rrin->AddNode(priv,1);
916 //
917 rrou->AddNode(rrov,1);
918 rrou->AddNode(crov,1,new TGeoTranslation(0.5,0.866, 0.));
919 rrou->AddNode(crov,2,new TGeoTranslation(0.5,-0.866, 0.));
920 rrou->AddNode(prov,1);
7281dc07 921 for(Int_t i=0;i<18;i++){
c1637e41 922 Double_t angle,x,y;
923 Double_t z,r;
924 angle=TMath::DegToRad()*20.*(Double_t)i;
925 r=81.5;
926 x=r * TMath::Cos(angle);
927 y=r * TMath::Sin(angle);
928 upar[2]=126.64; //lower
929 z= 126.96;
78134e48 930 //
931 if(i==3){
be53328e 932 v9->AddNode(rrin,1,new TGeoCombiTrans(x,y,z,rotr)); //A
933 v9->AddNode(rrin,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 934 }
935 else {
936 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
937 gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
c1637e41 938 }
78134e48 939
940
941 //
c1637e41 942 r=254.25;
943 x=r * TMath::Cos(angle);
944 y=r * TMath::Sin(angle);
945 upar[2]=126.54; //upper
946 z=127.06;
78134e48 947 if(i==15){
5042ab7d 948 //v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));//A-side only
949 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,127.14));//A-side only
78134e48 950 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
951 }
952 else if(i==11){
be53328e 953 v9->AddNode(rrou,1,new TGeoCombiTrans(x,y,z,rotr)); //A
954 v9->AddNode(rrou,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 955 }
956 else{
957 //
958 gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
959 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
960 }
37831078 961 }
962
bde68ab0 963 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
964 alice->AddNode(v1,1);
965
37831078 966
967
968} // end of function
37831078 969
c5d5037c 970
37831078 971
972//_____________________________________________________________________________
973void AliTPCv3::CreateMaterials()
974{
975 //
976 // Define materials for version 2 of the Time Projection Chamber
977 //
978
979
980 //
981 AliTPC::CreateMaterials();
982}
983
984//_____________________________________________________________________________
985void AliTPCv3::Init()
986{
987 //
988 // Initialises version 3 of the TPC after that it has been built
989 //
8d888a91 990 //Int_t *idtmed = fIdtmed->GetArray();
4b0fdcad 991
992 AliTPC::Init();
993
c1637e41 994 fIdSens=gMC->VolId("TPC_Drift"); // drift gas as a sensitive volume
4b0fdcad 995
d9888f70 996 gMC->SetMaxNStep(-30000); // max. number of steps increased
4b0fdcad 997
098dfc1a 998 // specific energy loss is now set in galice.cuts
4b0fdcad 999
13a8c8d7 1000 printf("%s: *** TPC version 3 initialized***\n",ClassName());
1001
1002 printf("%s: Maximum number of steps = %d\n",ClassName(),gMC->GetMaxNStep());
1003
1004 // printf("*** TPC version 3 initialized ***\n");
1005 // printf("Maximum number of steps = %d\n",gMC->GetMaxNStep());
4b0fdcad 1006
1007 //
1008
1009}
1010
1011//_____________________________________________________________________________
1012void AliTPCv3::StepManager()
1013{
1014 //
1015 // Called for every step in the Time Projection Chamber
1016 //
1017
1018 //
1019 // parameters used for the energy loss calculations
1020 //
73042f01 1021 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1022 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1023 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
4b0fdcad 1024
1025
73042f01 1026 const Float_t kbig = 1.e10;
4b0fdcad 1027
1028 Int_t id,copy;
1029 TLorentzVector pos;
e61fd20d 1030 Float_t hits[5];
4b0fdcad 1031 Int_t vol[2];
4b0fdcad 1032
1033 vol[1]=0;
1034 vol[0]=0;
1035
1036 //
1037
73042f01 1038 gMC->SetMaxStep(kbig);
4b0fdcad 1039
1040 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1041
1042 Float_t charge = gMC->TrackCharge();
1043
1044 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1045
1046
1047 id=gMC->CurrentVolID(copy);
c1637e41 1048
4b0fdcad 1049
37831078 1050 if (id != fIdSens) return;
4b0fdcad 1051
1052 //
1053 // charged particle is in the sensitive volume
1054 //
1055
1056 if(gMC->TrackStep() > 0) {
1057
1058
73042f01 1059 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
4b0fdcad 1060 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1061
1062 gMC->TrackPosition(pos);
1063 hits[0]=pos[0];
1064 hits[1]=pos[1];
1065 hits[2]=pos[2];
1066
e61fd20d 1067 // Get also the track time for pileup simulation
1068 hits[4]=gMC->TrackTime();
1069
4b0fdcad 1070 //
1071 // check the selected side of the TPC
1072 //
1073
1074 if(fSide && fSide*hits[2]<=0.) return;
1075
1076 hits[3]=(Float_t)nel;
1077
1078 // Add this hit
1079
5d12ce38 1080 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); //MI change
4b0fdcad 1081
1082 }
1083
1084 // Stemax calculation for the next step
1085
1086 Float_t pp;
1087 TLorentzVector mom;
1088 gMC->TrackMomentum(mom);
1089 Float_t ptot=mom.Rho();
73042f01 1090 Float_t betaGamma = ptot/gMC->TrackMass();
4b0fdcad 1091
69e40cce 1092 Int_t pid=gMC->TrackPid();
cc80f89e 1093 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
4b0fdcad 1094 {
73042f01 1095 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
4b0fdcad 1096 }
1097 else
1098 {
7b562732 1099 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3);
b40afa5e 1100 pp=kprim*AliMathBase::BetheBlochAleph(betaGamma);
4b0fdcad 1101 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1102 }
1103
b9d0a01d 1104 Double_t rnd = gMC->GetRandom()->Rndm();
4b0fdcad 1105
1106 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1107
1108}