Patch for the tracker
[u/mrichter/AliRoot.git] / TPC / AliTPCv3.cxx
CommitLineData
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 //
4b0fdcad 112
37831078 113 //
c1637e41 114 // here I define a volume TPC
115 // retrive the medium name with "TPC_" as a leading string
37831078 116 //
78134e48 117 TGeoPcon *tpc = new TGeoPcon(0.,360.,20); //20 sections
37831078 118 //
78134e48 119 tpc->DefineSection(0,-291.,77.,278.);
120 tpc->DefineSection(1,-270,77.,278.);
37831078 121 //
78134e48 122 tpc->DefineSection(2,-270.,77.,278.);
123 tpc->DefineSection(3,-259.6,70.,278.);
37831078 124 //
78134e48 125 tpc->DefineSection(4,-259.6,68.1,278.);
126 tpc->DefineSection(5,-253.6,68.1,278.);
37831078 127 //
78134e48 128 tpc->DefineSection(6,-253.6,68.,278.);
129 tpc->DefineSection(7,-74.0,60.8,278.);
37831078 130 //
78134e48 131 tpc->DefineSection(8,-74.0,60.1,278.);
132 tpc->DefineSection(9,-73.3,60.1,278.);
37831078 133 //
78134e48 134 tpc->DefineSection(10,-73.3,56.9,278.);
135 tpc->DefineSection(11,73.3,56.9,278.);
37831078 136 //
78134e48 137 tpc->DefineSection(12,73.3,60.1,278.);
138 tpc->DefineSection(13,74.0,60.1,278.);
37831078 139 //
78134e48 140 tpc->DefineSection(14,74.0,60.8,278.);
141 tpc->DefineSection(15,253.6,65.5,278.);
142 //
143 tpc->DefineSection(16,253.6,65.6,278.);
144 tpc->DefineSection(17,259.6,65.6,278.);
145 //
146 tpc->DefineSection(18,259.6,70.0,278.);
147 tpc->DefineSection(19,291.,77.,278.);
37831078 148 //
c1637e41 149 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
150 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
79575d04 151 //
c1637e41 152 // drift volume - sensitive volume, extended beyond the
153 // endcaps, because of the alignment
37831078 154 //
c1637e41 155 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
156 dvol->DefineSection(0,-260.,74.5,264.4);
157 dvol->DefineSection(1,-253.6,74.5,264.4);
37831078 158 //
c1637e41 159 dvol->DefineSection(2,-253.6,76.6774,258.);
160 dvol->DefineSection(3,253.6,76.6774,258.);
37831078 161 //
c1637e41 162 dvol->DefineSection(4,253.6,74.5,264.4);
163 dvol->DefineSection(5,260.,74.5,264.4);
37831078 164 //
c1637e41 165 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-2");
166 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
37831078 167 //
c1637e41 168 v1->AddNode(v9,1);
37831078 169 //
c1637e41 170 // outer insulator
720b23b8 171 //
c1637e41 172 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
79575d04 173 //
c1637e41 174 tpco->DefineSection(0,-256.6,264.8,278.);
175 tpco->DefineSection(1,-253.6,264.8,278.);
176 //
177 tpco->DefineSection(2,-253.6,258.,278.);
178 tpco->DefineSection(3,250.6,258.,278.);
179 //
180 tpco->DefineSection(4,250.6,258.,275.5);
181 tpco->DefineSection(5,253.6,258.,275.5);
182 //
183 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
184 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
185 //
186 // outer containment vessel
187 //
188 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
189 //
190 tocv->DefineSection(0,-256.6,264.8,278.);
191 tocv->DefineSection(1,-253.6,264.8,278.);
192 //
193 tocv->DefineSection(2,-253.6,274.8124,278.);
194 tocv->DefineSection(3,247.6,274.8124,278.);
195 //
196 tocv->DefineSection(4,247.6,270.4,278.);
197 tocv->DefineSection(5,250.6,270.4,278.);
198 //
199 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
200 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
201 //
202 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
203 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
204 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
205 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
206 //
207 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
208 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
209 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
210 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
211 //
212 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
213 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
214 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
215 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
37831078 216
217 //-------------------------------------------------------
218 // Tpc Outer Field Cage
c1637e41 219 // daughters - composite (sandwich)
37831078 220 //-------------------------------------------------------
221
c1637e41 222 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
79575d04 223 //
c1637e41 224 tofc->DefineSection(0,-253.6,258.,269.6);
225 tofc->DefineSection(1,-250.6,258.,269.6);
37831078 226 //
c1637e41 227 tofc->DefineSection(2,-250.6,258.,260.0676);
228 tofc->DefineSection(3,250.6,258.,260.0676);
37831078 229 //
c1637e41 230 tofc->DefineSection(4,250.6,258.,275.5);
231 tofc->DefineSection(5,253.6,258.,275.5);
37831078 232 //
c1637e41 233 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
234 //sandwich
235 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
236 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
237 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
37831078 238 //
c1637e41 239 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
37831078 240 //
c1637e41 241 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
242 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
243 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
244 //
245 // outer part - positioning
246 //
247 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
248 //
249 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
250 //
456cb019 251 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
c1637e41 252 //
253 v2->AddNode(v3,1); v2->AddNode(v4,1);
254 //
255 v1->AddNode(v2,1);
256 //-----------------------------------------------------------
37831078 257
1283eee5 258
37831078 259
37831078 260
37831078 261
37831078 262
79575d04 263 //--------------------------------------------------------------------
c1637e41 264 // Tpc Inner INsulator (CO2)
265 // the cones, the central drum and the inner f.c. sandwich with a piece
266 // of the flane will be placed in the TPC
267 //--------------------------------------------------------------------
268 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
37831078 269 //
c1637e41 270 tpci->DefineSection(0,-253.6,68.4,76.6774);
271 tpci->DefineSection(1,-74.0,61.2,76.6774);
37831078 272 //
c1637e41 273 tpci->DefineSection(2,74.0,61.2,76.6774);
37831078 274 //
c1637e41 275 tpci->DefineSection(3,253.6,65.9,76.6774);
37831078 276 //
c1637e41 277 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
37831078 278 //
c1637e41 279 // now the inner field cage - only part of flanges (2 copies)
37831078 280 //
c1637e41 281 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
282 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
37831078 283 //
c1637e41 284 //---------------------------------------------------------
285 // Tpc Inner Containment vessel - Muon side
286 //---------------------------------------------------------
287 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
37831078 288 //
c1637e41 289 tcms->DefineSection(0,-259.1,68.1,74.2);
290 tcms->DefineSection(1,-253.6,68.1,74.2);
37831078 291 //
c1637e41 292 tcms->DefineSection(2,-253.6,68.1,68.4);
293 tcms->DefineSection(3,-74.0,60.9,61.2);
37831078 294 //
c1637e41 295 tcms->DefineSection(4,-74.0,60.1,61.2);
296 tcms->DefineSection(5,-73.3,60.1,61.2);
37831078 297 //
c1637e41 298 tcms->DefineSection(6,-73.3,56.9,61.2);
299 tcms->DefineSection(7,-73.0,56.9,61.2);
37831078 300 //
c1637e41 301 tcms->DefineSection(8,-73.0,56.9,58.8);
302 tcms->DefineSection(9,-71.3,56.9,58.8);
37831078 303 //
c1637e41 304 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
305 //-----------------------------------------------
306 // inner containment vessel - shaft side
307 //-----------------------------------------------
308 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
37831078 309 //
c1637e41 310 tcss->DefineSection(0,71.3,56.9,58.8);
311 tcss->DefineSection(1,73.0,56.9,58.8);
37831078 312 //
c1637e41 313 tcss->DefineSection(2,73.0,56.9,61.2);
314 tcss->DefineSection(3,73.3,56.9,61.2);
315 //
316 tcss->DefineSection(4,73.3,60.1,61.2);
317 tcss->DefineSection(5,74.0,60.1,61.2);
37831078 318 //
c1637e41 319 tcss->DefineSection(6,74.0,60.9,61.2);
320 tcss->DefineSection(7,253.6,65.6,65.9);
37831078 321 //
c1637e41 322 tcss->DefineSection(8,253.6,65.6,74.2);
323 tcss->DefineSection(9,258.1,65.6,74.2);
37831078 324 //
c1637e41 325 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
326 //-----------------------------------------------
327 // Inner field cage
328 // define 4 parts and make an assembly
329 //-----------------------------------------------
330 // part1 - Al - 2 copies
331 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
332 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
333 // sandwich - outermost parts - 2 copies
334 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
335 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
336 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
337 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
37831078 338 //
c1637e41 339 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
340 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
341 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
342 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
37831078 343 //
c1637e41 344 // middle parts - 2 copies
345 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
346 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
347 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
348 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
37831078 349 //
c1637e41 350 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
351 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
352 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
353 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
354 // central part - 1 copy
355 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
356 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
357 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
37831078 358 //
c1637e41 359 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
360 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
361 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
37831078 362 //
c1637e41 363 // inner part - positioning
37831078 364 //
c1637e41 365 // creating a sandwich
366 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
37831078 367 //
c1637e41 368 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
37831078 369 //
c1637e41 370 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
79575d04 371 //
c1637e41 372 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
79575d04 373 //
c1637e41 374 tv100->AddNode(tv10,1);
375 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
376 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
377 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
378 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
379 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
380 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
79575d04 381 //
c1637e41 382 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
383 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
384 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
385 v9->AddNode(tv100,1);
79575d04 386 //
c1637e41 387 // central drum
79575d04 388 //
c1637e41 389 // flange + sandwich
79575d04 390 //
c1637e41 391 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
392 cfl->DefineSection(0,-71.1,59.7,61.2);
393 cfl->DefineSection(1,-68.6,59.7,61.2);
37831078 394 //
c1637e41 395 cfl->DefineSection(2,-68.6,60.6324,61.2);
396 cfl->DefineSection(3,68.6,60.6324,61.2);
37831078 397 //
c1637e41 398 cfl->DefineSection(4,68.6,59.7,61.2);
399 cfl->DefineSection(5,71.1,59.7,61.2);
400 //
401 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
402 // sandwich
403 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
404 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
405 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
406 //
407 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
408 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
409 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
410 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
411 //
412 // seals for central drum 2 copies
413 //
414 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
415 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
416 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
78134e48 417 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
418 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
c1637e41 419 //
420 // seal collars
421 TGeoPcon *se = new TGeoPcon(0.,360.,6);
422 se->DefineSection(0,-72.8,59.7,61.2);
423 se->DefineSection(1,-72.3,59.7,61.2);
424 //
425 se->DefineSection(2,-72.3,58.85,61.2);
426 se->DefineSection(3,-71.6,58.85,61.2);
427 //
428 se->DefineSection(4,-71.6,59.7,61.2);
429 se->DefineSection(5,-71.3,59.7,61.2);
430 //
431 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
432 //
433 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
434 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
435 //
436 // define reflection matrix
437 //
4fa47888 438 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
c1637e41 439 //
440 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
441 //
a1ec4d07 442 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
443 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
c1637e41 444 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
445 //
446 // central membrane - 2 rings and a mylar membrane - assembly
447 //
448 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
449 TGeoTube *oh = new TGeoTube(250.,256.,.5);
450 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
451 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
452 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
453 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
454 //
455 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
456 cm->AddNode(ihv,1);
457 cm->AddNode(ohv,1);
458 cm->AddNode(memv,1);
459 v9->AddNode(cm,1);
460 //
461 // end caps - they are make as an assembly of single segments
462 // containing both readout chambers
463 //
d899e254 464 Double_t openingAngle = 10.*TMath::DegToRad();
c1637e41 465 Double_t thick=1.5; // rib
d899e254 466 Double_t shift = thick/TMath::Sin(openingAngle);
c1637e41 467 //
d899e254 468 Double_t lowEdge = 86.3; // hole in the wheel
469 Double_t upEdge = 240.4; // hole in the wheel
c1637e41 470 //
471 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
472 //
473 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
474 //
d899e254 475 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
476 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
c1637e41 477 //
d899e254 478 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
479 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
c1637e41 480 //
d899e254 481 Double_t ys = shift*TMath::Sin(openingAngle);
482 Double_t xs = shift*TMath::Cos(openingAngle);
c1637e41 483 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
484 tr->RegisterYourself();
485 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
486 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
487 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
488 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
489 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
490 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
491 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
492 //
493 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
494 //
495 // readout chambers
496 //
497 // IROC first
498 //
499 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
500 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
37831078 501 // empty space
c1637e41 502 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
503 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
504 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
505 //bars
506 Double_t tga = (19.8328-12.3742)/39.3;
507 Double_t xmin,xmax;
508 xmin = 9.55*tga+12.3742;
509 xmax = 9.95*tga+12.3742;
510 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
511 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
512 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
513 xmin=19.4*tga+12.3742;
514 xmax=19.9*tga+12.3742;
515 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
516 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
517 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
518 xmin=29.35*tga+12.3742;
519 xmax=29.75*tga+12.3742;
520 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
521 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
522 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
523 //
524 // holes for connectors
525 //
526 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
527 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
d9e80aca 528 TString fileName(gSystem->Getenv("ALICE_ROOT"));
529 fileName += "/TPC/conn_iroc.dat";
c1637e41 530 ifstream in;
d9e80aca 531 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 532 for(Int_t i =0;i<86;i++){
456cb019 533 Double_t y = 3.99;
c1637e41 534 Double_t x,z,ang;
535 in>>x>>z>>ang;
456cb019 536 z-=26.5;
c1637e41 537 TGeoRotation *rrr = new TGeoRotation();
538 rrr->RotateY(ang);
539 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
540 ibdv->AddNode(connv,i+1,trans);
541 }
542 in.close();
543 // "cap"
544 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
545 // "hole"
546 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
547 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
548 tr1->RegisterYourself();
549 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
550 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
551 //
552 // pad plane and wire fixations
553 //
554 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
555 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
556 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
557 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
558 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
559 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
560 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
561 //
562 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
563 //
564 iroc->AddNode(ibdv,1);
565 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
566 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
567 tga =(23.3521-14.5974)/49.65;
568 Double_t xx = 24.825*tga+14.5974-0.6;
569 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
570 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
571 //
572 // OROC
573 //
574 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
575 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
576 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
577 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
578 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
579 //horizontal bars
580 tga=(38.5084-20.2938)/99.3;
581 xmin=tga*10.2+20.2938;
582 xmax=tga*10.6+20.2938;
583 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
584 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
585 //
586 xmin=22.55*tga+20.2938;
587 xmax=24.15*tga+20.2938;
588 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
589 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
590 //
591 xmin=36.1*tga+20.2938;
592 xmax=36.5*tga+20.2938;
593 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
594 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
595 //
596 xmin=49.0*tga+20.2938;
597 xmax=50.6*tga+20.2938;
598 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
599 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
600 //
601 xmin=63.6*tga+20.2938;
602 xmax=64.0*tga+20.2938;
603 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
604 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
605 //
606 xmin=75.5*tga+20.2938;
607 xmax=77.15*tga+20.2938;
608 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
609 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
610 //
611 xmin=88.7*tga+20.2938;
612 xmax=89.1*tga+20.2938;
613 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
614 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
615 //
616 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
617 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
618 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
619 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
620 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
621 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
622 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
623 // vertical bars
624 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
625 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
626 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
627 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
628 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
629 //
630 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
631 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
632 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
633 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
634 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
635 //
636 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
637 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
638 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
639 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
640 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
641 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
642 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
643 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
644 //
645 // holes for connectors
646 //
d9e80aca 647 fileName = gSystem->Getenv("ALICE_ROOT");
648 fileName += "/TPC/conn_oroc.dat";
649 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 650 for(Int_t i =0;i<78;i++){
651 Double_t y =3.89;
652 Double_t x,z,ang;
653 Double_t x1,z1,x2,z2;
654 in>>x>>z>>ang;
655 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
656 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
657 //
658 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
659 //
660 TGeoRotation *rr = new TGeoRotation();
661 rr->RotateY(ang);
662 z1-=54.95;
663 z2-=54.95;
664 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
665 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
666 obdv->AddNode(connv,i+1,trans1);
667 obdv->AddNode(connv,i+79,trans2);
668 }
669 in.close();
670 // cap
671 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
672 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
673 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
674 tr5->RegisterYourself();
675 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
676 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
677 //
678 // pad plane and wire fixations
679 //
680 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
681 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
682 //
683 tga=(43.5239-23.3874)/114.2;
684 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
685 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
686 xx = 57.1*tga+23.3874-0.7;
687 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
688 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
689 //
690 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
691 //
692 oroc->AddNode(obdv,1);
693 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
694 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
695 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
696 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
697 //
698 // now iroc and oroc are placed into a sector...
699 //
a1ec4d07 700 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
701 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
c1637e41 702 TGeoRotation rot1("rot1",90.,90.,0.);
703 TGeoRotation rot2("rot2");
704 rot2.RotateY(10.);
705 TGeoRotation *rot = new TGeoRotation("rot");
706 *rot=rot1*rot2;
707 //
708 Double_t x0,y0;
d899e254 709 x0=110.2*TMath::Cos(openingAngle);
710 y0=110.2*TMath::Sin(openingAngle);
20527578 711 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
712 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
d899e254 713 x0=188.45*TMath::Cos(openingAngle);
714 y0=188.45*TMath::Sin(openingAngle);
20527578 715 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
716 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
c1637e41 717 //
a1ec4d07 718 // A-side
c1637e41 719 //
a1ec4d07 720 secta->AddNode(ch,1);
721 secta->AddNode(iroc,1,combi1a);
722 secta->AddNode(oroc,1,combi2a);
c1637e41 723 //
a1ec4d07 724 // C-side
725 //
726 sectc->AddNode(ch,1);
727 sectc->AddNode(iroc,1,combi1c);
728 sectc->AddNode(oroc,1,combi2c);
729 //
730 // now I try to make wheels...
731 //
732 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
733 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
c1637e41 734 //
735 for(Int_t i =0;i<18;i++){
736 Double_t phi = (20.*i);
737 TGeoRotation *r = new TGeoRotation();
738 r->RotateZ(phi);
a1ec4d07 739 wheela->AddNode(secta,i+1,r);
740 wheelc->AddNode(sectc,i+1,r);
c1637e41 741
742 }
743 // wheels in the drift volume!
c1637e41 744 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
a1ec4d07 745 v9->AddNode(wheela,1,combi3);
746 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
37831078 747
c1637e41 748 //_____________________________________________________________
749 // service support wheel
750 //_____________________________________________________________
751 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
752 sw->DefineSection(0,-4.,80.5,251.75);
753 sw->DefineSection(1,4.,80.5,251.75);
754 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
755 //
756 thick=1.;
d899e254 757 shift = thick/TMath::Sin(openingAngle);
c1637e41 758 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
759 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
760 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
761 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
762 //
74518339 763 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
764 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
765 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
766 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
767 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
768 //
769 shv->AddNode(elv,1);
770 //
d899e254 771 ys = shift*TMath::Sin(openingAngle);
772 xs = shift*TMath::Cos(openingAngle);
c1637e41 773 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
774 // cover
775 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
776 co->DefineSection(0,-0.5,77.,255.25);
777 co->DefineSection(1,0.5,77.,255.25);
778 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
779 // hole in a cover
780 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
d899e254 781 shift=4./TMath::Sin(openingAngle);
c1637e41 782 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
783 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
784 //
785 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
786 //
d899e254 787 ys = shift*TMath::Sin(openingAngle);
788 xs = shift*TMath::Cos(openingAngle);
c1637e41 789 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
790 //
791 // Sector as an Assembly
792 //
793 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
794 swhs->AddNode(swv,1);
795 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
796 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
797 //
798 // SSW as an Assembly of sectors
799 //
800 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
801 for(Int_t i =0;i<18;i++){
802 Double_t phi = (20.*i);
803 TGeoRotation *r = new TGeoRotation();
804 r->RotateZ(phi);
805 swheel->AddNode(swhs,i+1,r);
806 }
807 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
808 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
809 //
37831078 810 //----------------------------------------------------------
811 // TPc Support Rods - MAKROLON
812 //----------------------------------------------------------
c1637e41 813 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
814 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
78134e48 815 TGeoMedium *m10 = gGeoManager->GetMedium("TPC_Alumina");
816 TGeoMedium *m11 = gGeoManager->GetMedium("TPC_Peek");
817 TGeoMedium *m12 = gGeoManager->GetMedium("TPC_Water");
c1637e41 818 // upper and lower rods differ in length!
819 Double_t *upar;
820 upar=NULL;
821 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
822 upar=new Double_t [3];
823 upar[0]=1.8;
824 upar[1]=2.2;
825
826 //
827 //HV rods - makrolon + 0.58cm (diameter) Cu
ae4806ca 828 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
c1637e41 829 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
830 //
831 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
832 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
833 hvrv->AddNode(hvcv,1);
78134e48 834 //
835 // resistor rods
836 //
837 TGeoTube *cri = new TGeoTube(0.,0.45,126.64); //inner
838 TGeoTube *cro = new TGeoTube(0.,0.45,126.54); //outer
839 TGeoTube *cwi = new TGeoTube(0.,0.15,126.64); // water inner
840 TGeoTube *cwo = new TGeoTube(0.,0.15,126.54); // water outer
841 //
842 TGeoVolume *criv = new TGeoVolume("TPC_CR_I",cri,m10);
843 TGeoVolume *crov = new TGeoVolume("TPC_CR_O",cro,m10);
844 TGeoVolume *cwiv = new TGeoVolume("TPC_W_I",cwi,m11);
845 TGeoVolume *cwov = new TGeoVolume("TPC_W_O",cwo,m11);
846 //
847 // ceramic rod with water
848 //
849 criv->AddNode(cwiv,1);
850 crov->AddNode(cwov,1);
851 //
852 TGeoTube *pri =new TGeoTube(0.2,0.35,126.64); //inner
853 TGeoTube *pro = new TGeoTube(0.2,0.35,126.54); //outer
854 //
855 // peek rod
856 //
857 TGeoVolume *priv = new TGeoVolume("TPC_PR_I",pri,m12);
858 TGeoVolume *prov = new TGeoVolume("TPC_PR_O",pro,m12);
859 //
860 // resistor rods assembly
861 //
be53328e 862 TGeoRotation *rotr = new TGeoRotation("rotr");
863 rotr->RotateZ(-21.);
78134e48 864 //
865 TGeoTube *rri = new TGeoTube(1.8,2.2,126.64);//inner
866 TGeoTube *rro = new TGeoTube(1.8,2.2,126.54);//inner
867 //
868 TGeoVolume *rriv = new TGeoVolume("TPC_RR_I",rri,m6);
869 TGeoVolume *rrov = new TGeoVolume("TPC_RR_O",rro,m6);
870 //
a3d2be59 871 TGeoVolumeAssembly *rrin = new TGeoVolumeAssembly("TPC_RROD_I");
872 TGeoVolumeAssembly *rrou = new TGeoVolumeAssembly("TPC_RROD_O");
873 rrin->AddNode(rriv,1);
874 rrin->AddNode(criv,1,new TGeoTranslation(0.5,0.866, 0.));
875 rrin->AddNode(criv,2,new TGeoTranslation(0.5,-0.866, 0.));
876 rrin->AddNode(priv,1);
877 //
878 rrou->AddNode(rrov,1);
879 rrou->AddNode(crov,1,new TGeoTranslation(0.5,0.866, 0.));
880 rrou->AddNode(crov,2,new TGeoTranslation(0.5,-0.866, 0.));
881 rrou->AddNode(prov,1);
7281dc07 882 for(Int_t i=0;i<18;i++){
c1637e41 883 Double_t angle,x,y;
884 Double_t z,r;
885 angle=TMath::DegToRad()*20.*(Double_t)i;
886 r=81.5;
887 x=r * TMath::Cos(angle);
888 y=r * TMath::Sin(angle);
889 upar[2]=126.64; //lower
890 z= 126.96;
78134e48 891 //
892 if(i==3){
be53328e 893 v9->AddNode(rrin,1,new TGeoCombiTrans(x,y,z,rotr)); //A
894 v9->AddNode(rrin,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 895 }
896 else {
897 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
898 gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
c1637e41 899 }
78134e48 900
901
902 //
c1637e41 903 r=254.25;
904 x=r * TMath::Cos(angle);
905 y=r * TMath::Sin(angle);
906 upar[2]=126.54; //upper
907 z=127.06;
78134e48 908 if(i==15){
5042ab7d 909 //v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));//A-side only
910 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,127.14));//A-side only
78134e48 911 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
912 }
913 else if(i==11){
be53328e 914 v9->AddNode(rrou,1,new TGeoCombiTrans(x,y,z,rotr)); //A
915 v9->AddNode(rrou,2,new TGeoCombiTrans(x,y,-z,rotr)); //C
78134e48 916 }
917 else{
918 //
919 gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
920 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
921 }
37831078 922 }
923
bde68ab0 924 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
925 alice->AddNode(v1,1);
926
37831078 927
1283eee5 928
929} // end of function
4b0fdcad 930
931//_____________________________________________________________________________
99dcb142 932void AliTPCv3::DrawDetector() const
4b0fdcad 933{
934 //
79575d04 935 // Draw a shaded view of the Time Projection Chamber version 3
4b0fdcad 936 //
937
938
939 // Set everything unseen
940 gMC->Gsatt("*", "seen", -1);
941 //
942 // Set ALIC mother transparent
943 gMC->Gsatt("ALIC","SEEN",0);
944 //
945 // Set the volumes visible
37831078 946 //
947
948 gMC->Gsatt("TPC ","SEEN",0);
949 gMC->Gsatt("TOIN","SEEN",1);
950 gMC->Gsatt("TOIN","COLO",7);
37831078 951 gMC->Gsatt("TOCV","SEEN",1);
952 gMC->Gsatt("TOCV","COLO",4);
953 gMC->Gsatt("TSA1","SEEN",0);
954 gMC->Gsatt("TSA2","SEEN",0);
955 gMC->Gsatt("TSA3","SEEN",0);
79575d04 956 gMC->Gsatt("TSA4","SEEN",0);
957 gMC->Gsatt("TSA5","SEEN",0);
37831078 958 gMC->Gsatt("TOFC","SEEN",1);
959 gMC->Gsatt("TOFC","COLO",4);
37831078 960 gMC->Gsatt("TSA6","SEEN",0);
961 gMC->Gsatt("TSA7","SEEN",0);
79575d04 962 gMC->Gsatt("TSA8","SEEN",0);
37831078 963 gMC->Gsatt("TIIN","SEEN",1);
79575d04 964 gMC->Gsatt("TIIN","COLO",7);
965 gMC->Gsatt("TII1","SEEN",0);
966 gMC->Gsatt("TIFC","SEEN",1);
967 gMC->Gsatt("TIFC","COLO",4);
968 gMC->Gsatt("TSA9","SEEN",0);
37831078 969 gMC->Gsatt("TS10","SEEN",0);
970 gMC->Gsatt("TS11","SEEN",0);
971 gMC->Gsatt("TS12","SEEN",0);
37831078 972 gMC->Gsatt("TS13","SEEN",0);
973 gMC->Gsatt("TS14","SEEN",0);
79575d04 974 gMC->Gsatt("TICC","SEEN",0);
975 gMC->Gsatt("TICM","SEEN",0);
37831078 976 gMC->Gsatt("TS15","SEEN",0);
977 gMC->Gsatt("TS16","SEEN",0);
37831078 978 gMC->Gsatt("TS17","SEEN",0);
79575d04 979 gMC->Gsatt("TS18","SEEN",0);
980 gMC->Gsatt("TS19","SEEN",0);
981 gMC->Gsatt("TPJ1","SEEN",0);
982 gMC->Gsatt("TPJ2","SEEN",0);
983 gMC->Gsatt("TICS","SEEN",0);
984 gMC->Gsatt("TDGS","SEEN",0);
37831078 985 gMC->Gsatt("TIRC","SEEN",0);
986 gMC->Gsatt("TIC1","SEEN",1);
987 gMC->Gsatt("TIPP","SEEN",0);
988 gMC->Gsatt("TIC3","SEEN",0);
989 gMC->Gsatt("TRCE","SEEN",0);
990 gMC->Gsatt("TPSC","SEEN",0);
79575d04 991 gMC->Gsatt("TPCC","SEEN",0);
37831078 992 gMC->Gsatt("TORC","SEEN",0);
993 gMC->Gsatt("TOPP","SEEN",0);
994 gMC->Gsatt("TOC3","SEEN",0);
995 gMC->Gsatt("TOC1","SEEN",1);
996 gMC->Gsatt("TSSW","SEEN",1);
997 gMC->Gsatt("TSWC","SEEN",1);
37831078 998 gMC->Gsatt("TSSW","COLO",3);
999 gMC->Gsatt("TSWC","COLO",3);
1000 gMC->Gsatt("TSCE","COLO",6);
79575d04 1001 gMC->Gsatt("TSCE","SEEN",1);
37831078 1002 gMC->Gsatt("TWES","SEEN",0);
1003 gMC->Gsatt("TSWB","SEEN",0);
1004 gMC->Gsatt("TPEL","SEEN",0);
1005 gMC->Gsatt("TPMW","SEEN",1);
37831078 1006 gMC->Gsatt("TESR","SEEN",1);
1007 gMC->Gsatt("TPMW","COLO",12);
37831078 1008 gMC->Gsatt("TIC1","COLO",5);
79575d04 1009 gMC->Gsatt("TOC1","COLO",5);
37831078 1010 gMC->Gsatt("TESB","SEEN",0);
37831078 1011 gMC->Gsatt("THVM","SEEN",1);
1012 gMC->Gsatt("THVM","COLO",11);
79575d04 1013 gMC->Gsatt("THVH","SEEN",0);
1014 gMC->Gsatt("TPSR","SEEN",0);
37831078 1015 gMC->Gsatt("THVL","SEEN",0);
79575d04 1016 gMC->Gsatt("THVC","SEEN",0);
37831078 1017 gMC->Gsatt("THVE","SEEN",0);
1018 gMC->Gsatt("THVR","SEEN",0);
1019
4b0fdcad 1020 //
1021 gMC->Gdopt("hide", "on");
1022 gMC->Gdopt("shad", "on");
1023 gMC->Gsatt("*", "fill", 7);
1024 gMC->SetClipBox(".");
37831078 1025 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1026 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1027 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1028 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1029 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
4b0fdcad 1030 gMC->DefaultRange();
1031 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1032 gMC->Gdhead(1111, "Time Projection Chamber");
1033 gMC->Gdman(18, 4, "MAN");
1034 gMC->Gdopt("hide","off");
1035}
1036
1037//_____________________________________________________________________________
1038void AliTPCv3::CreateMaterials()
1039{
1040 //
1041 // Define materials for version 2 of the Time Projection Chamber
1042 //
1043
1044
1045 //
4b0fdcad 1046 AliTPC::CreateMaterials();
1047}
1048
1049//_____________________________________________________________________________
1050void AliTPCv3::Init()
1051{
1052 //
1053 // Initialises version 3 of the TPC after that it has been built
1054 //
8d888a91 1055 //Int_t *idtmed = fIdtmed->GetArray();
4b0fdcad 1056
1057 AliTPC::Init();
1058
c1637e41 1059 fIdSens=gMC->VolId("TPC_Drift"); // drift gas as a sensitive volume
4b0fdcad 1060
d9888f70 1061 gMC->SetMaxNStep(-30000); // max. number of steps increased
4b0fdcad 1062
098dfc1a 1063 // specific energy loss is now set in galice.cuts
4b0fdcad 1064
13a8c8d7 1065 printf("%s: *** TPC version 3 initialized***\n",ClassName());
1066
1067 printf("%s: Maximum number of steps = %d\n",ClassName(),gMC->GetMaxNStep());
1068
1069 // printf("*** TPC version 3 initialized ***\n");
1070 // printf("Maximum number of steps = %d\n",gMC->GetMaxNStep());
4b0fdcad 1071
1072 //
1073
1074}
1075
1076//_____________________________________________________________________________
1077void AliTPCv3::StepManager()
1078{
1079 //
1080 // Called for every step in the Time Projection Chamber
1081 //
1082
1083 //
1084 // parameters used for the energy loss calculations
1085 //
73042f01 1086 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1087 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1088 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
4b0fdcad 1089
1090
73042f01 1091 const Float_t kbig = 1.e10;
4b0fdcad 1092
1093 Int_t id,copy;
1094 TLorentzVector pos;
e61fd20d 1095 Float_t hits[5];
4b0fdcad 1096 Int_t vol[2];
4b0fdcad 1097
1098 vol[1]=0;
1099 vol[0]=0;
1100
1101 //
1102
73042f01 1103 gMC->SetMaxStep(kbig);
4b0fdcad 1104
1105 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1106
1107 Float_t charge = gMC->TrackCharge();
1108
1109 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1110
1111
1112 id=gMC->CurrentVolID(copy);
c1637e41 1113
4b0fdcad 1114
37831078 1115 if (id != fIdSens) return;
4b0fdcad 1116
1117 //
1118 // charged particle is in the sensitive volume
1119 //
1120
1121 if(gMC->TrackStep() > 0) {
1122
1123
73042f01 1124 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
4b0fdcad 1125 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1126
1127 gMC->TrackPosition(pos);
1128 hits[0]=pos[0];
1129 hits[1]=pos[1];
1130 hits[2]=pos[2];
1131
e61fd20d 1132 // Get also the track time for pileup simulation
1133 hits[4]=gMC->TrackTime();
1134
4b0fdcad 1135 //
1136 // check the selected side of the TPC
1137 //
1138
1139 if(fSide && fSide*hits[2]<=0.) return;
1140
1141 hits[3]=(Float_t)nel;
1142
1143 // Add this hit
1144
5d12ce38 1145 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); //MI change
4b0fdcad 1146
1147 }
1148
1149 // Stemax calculation for the next step
1150
1151 Float_t pp;
1152 TLorentzVector mom;
1153 gMC->TrackMomentum(mom);
1154 Float_t ptot=mom.Rho();
73042f01 1155 Float_t betaGamma = ptot/gMC->TrackMass();
4b0fdcad 1156
69e40cce 1157 Int_t pid=gMC->TrackPid();
cc80f89e 1158 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
4b0fdcad 1159 {
73042f01 1160 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
4b0fdcad 1161 }
1162 else
1163 {
7b562732 1164 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3);
b40afa5e 1165 pp=kprim*AliMathBase::BetheBlochAleph(betaGamma);
4b0fdcad 1166 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1167 }
1168
b9d0a01d 1169 Double_t rnd = gMC->GetRandom()->Rndm();
4b0fdcad 1170
1171 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1172
1173}