Just something left from v2...now clean
[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"
cc80f89e 44#include "AliTPCDigitsArray.h"
4c475d27 45#include "AliTPCParam.h"
46#include "AliTPCParamSR.h"
4ed5dced 47#include "AliTPCTrackHitsV2.h"
116cbefd 48#include "AliTPCv3.h"
5d12ce38 49#include "AliMC.h"
c1637e41 50#include "TGeoManager.h"
51#include "TGeoVolume.h"
52#include "TGeoPcon.h"
53#include "TGeoTube.h"
54#include "TGeoPgon.h"
55#include "TGeoTrd1.h"
56#include "TGeoCompositeShape.h"
57#include "TGeoPara.h"
4b0fdcad 58
59ClassImp(AliTPCv3)
79575d04 60//_____________________________________________________________________________
61
179c6296 62 AliTPCv3::AliTPCv3():AliTPC(),fIdSens(0)
63{
79575d04 64
65 fHitType = 1;
66
67}
68
4b0fdcad 69//_____________________________________________________________________________
70AliTPCv3::AliTPCv3(const char *name, const char *title) :
179c6296 71 AliTPC(name, title), fIdSens(0)
4b0fdcad 72{
73 //
cc80f89e 74 // Standard constructor for Time Projection Chamber version 3
4b0fdcad 75 //
76
77 SetBufferSize(128000);
73042f01 78
79 if (fTPCParam)
80 fTPCParam->Write(fTPCParam->GetTitle());
79575d04 81
82 fHitType =1;
4b0fdcad 83}
84
85//_____________________________________________________________________________
86void AliTPCv3::CreateGeometry()
87{
88 //
cc80f89e 89 // Creation of the TPC coarse geometry (version 3)
37831078 90 // The whole drift volume is sensitive
cc80f89e 91 // Origin Marek Kowalski Cracow
4b0fdcad 92 //
93 //Begin_Html
94 /*
37831078 95 <img src="picts/AliTPCgif">
4b0fdcad 96 */
97 //End_Html
98 //Begin_Html
99 /*
37831078 100 <img src="picts/AliTPCv3Tree.gif">
4b0fdcad 101 */
102 //End_Html
c1637e41 103 //----------------------------------------------------------
104 // This geometry is written using TGeo class
105 // Firstly the shapes are defined, and only then the volumes
106 // What is recognized by the MC are volumes
107 //----------------------------------------------------------
37831078 108 //
c1637e41 109 // tpc - this will be the mother volume
37831078 110 //
4b0fdcad 111
37831078 112 //
c1637e41 113 // here I define a volume TPC
114 // retrive the medium name with "TPC_" as a leading string
37831078 115 //
c1637e41 116 TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections
117 tpc->DefineSection(0,-290.,77.,278.);
456cb019 118 tpc->DefineSection(1,-259.6,70.,278.);
37831078 119 //
c1637e41 120 tpc->DefineSection(2,-259.6,68.1,278.);
121 tpc->DefineSection(3,-253.6,68.1,278.);
37831078 122 //
c1637e41 123 tpc->DefineSection(4,-253.6,68.,278.);
124 tpc->DefineSection(5,-74.0,60.8,278.);
37831078 125 //
c1637e41 126 tpc->DefineSection(6,-74.0,60.1,278.);
127 tpc->DefineSection(7,-73.3,60.1,278.);
37831078 128 //
c1637e41 129 tpc->DefineSection(8,-73.3,56.9,278.);
130 tpc->DefineSection(9,73.3,56.9,278.);
37831078 131 //
c1637e41 132 tpc->DefineSection(10,73.3,60.1,278.);
133 tpc->DefineSection(11,74.0,60.1,278.);
37831078 134 //
c1637e41 135 tpc->DefineSection(12,74.0,60.8,278.);
136 tpc->DefineSection(13,253.6,65.5,278.);
37831078 137 //
c1637e41 138 tpc->DefineSection(14,253.6,65.6,278.);
139 tpc->DefineSection(15,259.6,65.6,278.);
37831078 140 //
456cb019 141 tpc->DefineSection(16,259.6,70.0,278.);
c1637e41 142 tpc->DefineSection(17,290.,77.,278.);
37831078 143 //
c1637e41 144 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
145 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
79575d04 146 //
c1637e41 147 // drift volume - sensitive volume, extended beyond the
148 // endcaps, because of the alignment
37831078 149 //
c1637e41 150 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
151 dvol->DefineSection(0,-260.,74.5,264.4);
152 dvol->DefineSection(1,-253.6,74.5,264.4);
37831078 153 //
c1637e41 154 dvol->DefineSection(2,-253.6,76.6774,258.);
155 dvol->DefineSection(3,253.6,76.6774,258.);
37831078 156 //
c1637e41 157 dvol->DefineSection(4,253.6,74.5,264.4);
158 dvol->DefineSection(5,260.,74.5,264.4);
37831078 159 //
c1637e41 160 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-2");
161 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
37831078 162 //
c1637e41 163 v1->AddNode(v9,1);
37831078 164 //
c1637e41 165 // outer insulator
720b23b8 166 //
c1637e41 167 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
79575d04 168 //
c1637e41 169 tpco->DefineSection(0,-256.6,264.8,278.);
170 tpco->DefineSection(1,-253.6,264.8,278.);
171 //
172 tpco->DefineSection(2,-253.6,258.,278.);
173 tpco->DefineSection(3,250.6,258.,278.);
174 //
175 tpco->DefineSection(4,250.6,258.,275.5);
176 tpco->DefineSection(5,253.6,258.,275.5);
177 //
178 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
179 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
180 //
181 // outer containment vessel
182 //
183 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
184 //
185 tocv->DefineSection(0,-256.6,264.8,278.);
186 tocv->DefineSection(1,-253.6,264.8,278.);
187 //
188 tocv->DefineSection(2,-253.6,274.8124,278.);
189 tocv->DefineSection(3,247.6,274.8124,278.);
190 //
191 tocv->DefineSection(4,247.6,270.4,278.);
192 tocv->DefineSection(5,250.6,270.4,278.);
193 //
194 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
195 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
196 //
197 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
198 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
199 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
200 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
201 //
202 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
203 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
204 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
205 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
206 //
207 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
208 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
209 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
210 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
37831078 211
212 //-------------------------------------------------------
213 // Tpc Outer Field Cage
c1637e41 214 // daughters - composite (sandwich)
37831078 215 //-------------------------------------------------------
216
c1637e41 217 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
79575d04 218 //
c1637e41 219 tofc->DefineSection(0,-253.6,258.,269.6);
220 tofc->DefineSection(1,-250.6,258.,269.6);
37831078 221 //
c1637e41 222 tofc->DefineSection(2,-250.6,258.,260.0676);
223 tofc->DefineSection(3,250.6,258.,260.0676);
37831078 224 //
c1637e41 225 tofc->DefineSection(4,250.6,258.,275.5);
226 tofc->DefineSection(5,253.6,258.,275.5);
37831078 227 //
c1637e41 228 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
229 //sandwich
230 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
231 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
232 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
37831078 233 //
c1637e41 234 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
37831078 235 //
c1637e41 236 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
237 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
238 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
239 //
240 // outer part - positioning
241 //
242 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
243 //
244 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
245 //
456cb019 246 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
c1637e41 247 //
248 v2->AddNode(v3,1); v2->AddNode(v4,1);
249 //
250 v1->AddNode(v2,1);
251 //-----------------------------------------------------------
37831078 252
1283eee5 253
37831078 254
37831078 255
37831078 256
37831078 257
79575d04 258 //--------------------------------------------------------------------
c1637e41 259 // Tpc Inner INsulator (CO2)
260 // the cones, the central drum and the inner f.c. sandwich with a piece
261 // of the flane will be placed in the TPC
262 //--------------------------------------------------------------------
263 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
37831078 264 //
c1637e41 265 tpci->DefineSection(0,-253.6,68.4,76.6774);
266 tpci->DefineSection(1,-74.0,61.2,76.6774);
37831078 267 //
c1637e41 268 tpci->DefineSection(2,74.0,61.2,76.6774);
37831078 269 //
c1637e41 270 tpci->DefineSection(3,253.6,65.9,76.6774);
37831078 271 //
c1637e41 272 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
37831078 273 //
c1637e41 274 // now the inner field cage - only part of flanges (2 copies)
37831078 275 //
c1637e41 276 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
277 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
37831078 278 //
c1637e41 279 //---------------------------------------------------------
280 // Tpc Inner Containment vessel - Muon side
281 //---------------------------------------------------------
282 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
37831078 283 //
c1637e41 284 tcms->DefineSection(0,-259.1,68.1,74.2);
285 tcms->DefineSection(1,-253.6,68.1,74.2);
37831078 286 //
c1637e41 287 tcms->DefineSection(2,-253.6,68.1,68.4);
288 tcms->DefineSection(3,-74.0,60.9,61.2);
37831078 289 //
c1637e41 290 tcms->DefineSection(4,-74.0,60.1,61.2);
291 tcms->DefineSection(5,-73.3,60.1,61.2);
37831078 292 //
c1637e41 293 tcms->DefineSection(6,-73.3,56.9,61.2);
294 tcms->DefineSection(7,-73.0,56.9,61.2);
37831078 295 //
c1637e41 296 tcms->DefineSection(8,-73.0,56.9,58.8);
297 tcms->DefineSection(9,-71.3,56.9,58.8);
37831078 298 //
c1637e41 299 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
300 //-----------------------------------------------
301 // inner containment vessel - shaft side
302 //-----------------------------------------------
303 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
37831078 304 //
c1637e41 305 tcss->DefineSection(0,71.3,56.9,58.8);
306 tcss->DefineSection(1,73.0,56.9,58.8);
37831078 307 //
c1637e41 308 tcss->DefineSection(2,73.0,56.9,61.2);
309 tcss->DefineSection(3,73.3,56.9,61.2);
310 //
311 tcss->DefineSection(4,73.3,60.1,61.2);
312 tcss->DefineSection(5,74.0,60.1,61.2);
37831078 313 //
c1637e41 314 tcss->DefineSection(6,74.0,60.9,61.2);
315 tcss->DefineSection(7,253.6,65.6,65.9);
37831078 316 //
c1637e41 317 tcss->DefineSection(8,253.6,65.6,74.2);
318 tcss->DefineSection(9,258.1,65.6,74.2);
37831078 319 //
c1637e41 320 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
321 //-----------------------------------------------
322 // Inner field cage
323 // define 4 parts and make an assembly
324 //-----------------------------------------------
325 // part1 - Al - 2 copies
326 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
327 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
328 // sandwich - outermost parts - 2 copies
329 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
330 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
331 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
332 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
37831078 333 //
c1637e41 334 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
335 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
336 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
337 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
37831078 338 //
c1637e41 339 // middle parts - 2 copies
340 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
341 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
342 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
343 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
37831078 344 //
c1637e41 345 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
346 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
347 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
348 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
349 // central part - 1 copy
350 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
351 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
352 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
37831078 353 //
c1637e41 354 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
355 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
356 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
37831078 357 //
c1637e41 358 // inner part - positioning
37831078 359 //
c1637e41 360 // creating a sandwich
361 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
37831078 362 //
c1637e41 363 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
37831078 364 //
c1637e41 365 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
79575d04 366 //
c1637e41 367 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
79575d04 368 //
c1637e41 369 tv100->AddNode(tv10,1);
370 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
371 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
372 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
373 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
374 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
375 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
79575d04 376 //
c1637e41 377 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
378 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
379 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
380 v9->AddNode(tv100,1);
79575d04 381 //
c1637e41 382 // central drum
79575d04 383 //
c1637e41 384 // flange + sandwich
79575d04 385 //
c1637e41 386 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
387 cfl->DefineSection(0,-71.1,59.7,61.2);
388 cfl->DefineSection(1,-68.6,59.7,61.2);
37831078 389 //
c1637e41 390 cfl->DefineSection(2,-68.6,60.6324,61.2);
391 cfl->DefineSection(3,68.6,60.6324,61.2);
37831078 392 //
c1637e41 393 cfl->DefineSection(4,68.6,59.7,61.2);
394 cfl->DefineSection(5,71.1,59.7,61.2);
395 //
396 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
397 // sandwich
398 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
399 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
400 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
401 //
402 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
403 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
404 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
405 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
406 //
407 // seals for central drum 2 copies
408 //
409 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
410 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
411 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
412 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.));
413 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.));
414 //
415 // seal collars
416 TGeoPcon *se = new TGeoPcon(0.,360.,6);
417 se->DefineSection(0,-72.8,59.7,61.2);
418 se->DefineSection(1,-72.3,59.7,61.2);
419 //
420 se->DefineSection(2,-72.3,58.85,61.2);
421 se->DefineSection(3,-71.6,58.85,61.2);
422 //
423 se->DefineSection(4,-71.6,59.7,61.2);
424 se->DefineSection(5,-71.3,59.7,61.2);
425 //
426 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
427 //
428 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
429 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
430 //
431 // define reflection matrix
432 //
4fa47888 433 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
c1637e41 434 //
435 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
436 //
a1ec4d07 437 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
438 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
c1637e41 439 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
440 //
441 // central membrane - 2 rings and a mylar membrane - assembly
442 //
443 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
444 TGeoTube *oh = new TGeoTube(250.,256.,.5);
445 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
446 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
447 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
448 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
449 //
450 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
451 cm->AddNode(ihv,1);
452 cm->AddNode(ohv,1);
453 cm->AddNode(memv,1);
454 v9->AddNode(cm,1);
455 //
456 // end caps - they are make as an assembly of single segments
457 // containing both readout chambers
458 //
d899e254 459 Double_t openingAngle = 10.*TMath::DegToRad();
c1637e41 460 Double_t thick=1.5; // rib
d899e254 461 Double_t shift = thick/TMath::Sin(openingAngle);
c1637e41 462 //
d899e254 463 Double_t lowEdge = 86.3; // hole in the wheel
464 Double_t upEdge = 240.4; // hole in the wheel
c1637e41 465 //
466 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
467 //
468 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
469 //
d899e254 470 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
471 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
c1637e41 472 //
d899e254 473 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
474 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
c1637e41 475 //
d899e254 476 Double_t ys = shift*TMath::Sin(openingAngle);
477 Double_t xs = shift*TMath::Cos(openingAngle);
c1637e41 478 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
479 tr->RegisterYourself();
480 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
481 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
482 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
483 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
484 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
485 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
486 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
487 //
488 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
489 //
490 // readout chambers
491 //
492 // IROC first
493 //
494 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
495 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
37831078 496 // empty space
c1637e41 497 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
498 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
499 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
500 //bars
501 Double_t tga = (19.8328-12.3742)/39.3;
502 Double_t xmin,xmax;
503 xmin = 9.55*tga+12.3742;
504 xmax = 9.95*tga+12.3742;
505 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
506 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
507 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
508 xmin=19.4*tga+12.3742;
509 xmax=19.9*tga+12.3742;
510 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
511 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
512 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
513 xmin=29.35*tga+12.3742;
514 xmax=29.75*tga+12.3742;
515 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
516 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
517 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
518 //
519 // holes for connectors
520 //
521 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
522 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
d9e80aca 523 TString fileName(gSystem->Getenv("ALICE_ROOT"));
524 fileName += "/TPC/conn_iroc.dat";
c1637e41 525 ifstream in;
d9e80aca 526 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 527 for(Int_t i =0;i<86;i++){
456cb019 528 Double_t y = 3.99;
c1637e41 529 Double_t x,z,ang;
530 in>>x>>z>>ang;
456cb019 531 z-=26.5;
c1637e41 532 TGeoRotation *rrr = new TGeoRotation();
533 rrr->RotateY(ang);
534 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
535 ibdv->AddNode(connv,i+1,trans);
536 }
537 in.close();
538 // "cap"
539 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
540 // "hole"
541 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
542 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
543 tr1->RegisterYourself();
544 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
545 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
546 //
547 // pad plane and wire fixations
548 //
549 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
550 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
551 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
552 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
553 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
554 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
555 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
556 //
557 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
558 //
559 iroc->AddNode(ibdv,1);
560 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
561 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
562 tga =(23.3521-14.5974)/49.65;
563 Double_t xx = 24.825*tga+14.5974-0.6;
564 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
565 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
566 //
567 // OROC
568 //
569 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
570 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
571 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
572 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
573 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
574 //horizontal bars
575 tga=(38.5084-20.2938)/99.3;
576 xmin=tga*10.2+20.2938;
577 xmax=tga*10.6+20.2938;
578 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
579 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
580 //
581 xmin=22.55*tga+20.2938;
582 xmax=24.15*tga+20.2938;
583 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
584 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
585 //
586 xmin=36.1*tga+20.2938;
587 xmax=36.5*tga+20.2938;
588 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
589 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
590 //
591 xmin=49.0*tga+20.2938;
592 xmax=50.6*tga+20.2938;
593 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
594 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
595 //
596 xmin=63.6*tga+20.2938;
597 xmax=64.0*tga+20.2938;
598 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
599 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
600 //
601 xmin=75.5*tga+20.2938;
602 xmax=77.15*tga+20.2938;
603 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
604 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
605 //
606 xmin=88.7*tga+20.2938;
607 xmax=89.1*tga+20.2938;
608 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
609 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
610 //
611 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
612 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
613 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
614 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
615 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
616 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
617 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
618 // vertical bars
619 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
620 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
621 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
622 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
623 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
624 //
625 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
626 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
627 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
628 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
629 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
630 //
631 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
632 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
633 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
634 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
635 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
636 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
637 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
638 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
639 //
640 // holes for connectors
641 //
d9e80aca 642 fileName = gSystem->Getenv("ALICE_ROOT");
643 fileName += "/TPC/conn_oroc.dat";
644 in.open(fileName.Data(), ios_base::in); // asci file
c1637e41 645 for(Int_t i =0;i<78;i++){
646 Double_t y =3.89;
647 Double_t x,z,ang;
648 Double_t x1,z1,x2,z2;
649 in>>x>>z>>ang;
650 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
651 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
652 //
653 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
654 //
655 TGeoRotation *rr = new TGeoRotation();
656 rr->RotateY(ang);
657 z1-=54.95;
658 z2-=54.95;
659 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
660 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
661 obdv->AddNode(connv,i+1,trans1);
662 obdv->AddNode(connv,i+79,trans2);
663 }
664 in.close();
665 // cap
666 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
667 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
668 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
669 tr5->RegisterYourself();
670 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
671 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
672 //
673 // pad plane and wire fixations
674 //
675 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
676 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
677 //
678 tga=(43.5239-23.3874)/114.2;
679 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
680 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
681 xx = 57.1*tga+23.3874-0.7;
682 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
683 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
684 //
685 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
686 //
687 oroc->AddNode(obdv,1);
688 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
689 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
690 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
691 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
692 //
693 // now iroc and oroc are placed into a sector...
694 //
a1ec4d07 695 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
696 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
c1637e41 697 TGeoRotation rot1("rot1",90.,90.,0.);
698 TGeoRotation rot2("rot2");
699 rot2.RotateY(10.);
700 TGeoRotation *rot = new TGeoRotation("rot");
701 *rot=rot1*rot2;
702 //
703 Double_t x0,y0;
d899e254 704 x0=110.2*TMath::Cos(openingAngle);
705 y0=110.2*TMath::Sin(openingAngle);
20527578 706 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
707 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
d899e254 708 x0=188.45*TMath::Cos(openingAngle);
709 y0=188.45*TMath::Sin(openingAngle);
20527578 710 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
711 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
c1637e41 712 //
a1ec4d07 713 // A-side
c1637e41 714 //
a1ec4d07 715 secta->AddNode(ch,1);
716 secta->AddNode(iroc,1,combi1a);
717 secta->AddNode(oroc,1,combi2a);
c1637e41 718 //
a1ec4d07 719 // C-side
720 //
721 sectc->AddNode(ch,1);
722 sectc->AddNode(iroc,1,combi1c);
723 sectc->AddNode(oroc,1,combi2c);
724 //
725 // now I try to make wheels...
726 //
727 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
728 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
c1637e41 729 //
730 for(Int_t i =0;i<18;i++){
731 Double_t phi = (20.*i);
732 TGeoRotation *r = new TGeoRotation();
733 r->RotateZ(phi);
a1ec4d07 734 wheela->AddNode(secta,i+1,r);
735 wheelc->AddNode(sectc,i+1,r);
c1637e41 736
737 }
738 // wheels in the drift volume!
c1637e41 739 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
a1ec4d07 740 v9->AddNode(wheela,1,combi3);
741 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
37831078 742
c1637e41 743 //_____________________________________________________________
744 // service support wheel
745 //_____________________________________________________________
746 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
747 sw->DefineSection(0,-4.,80.5,251.75);
748 sw->DefineSection(1,4.,80.5,251.75);
749 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
750 //
751 thick=1.;
d899e254 752 shift = thick/TMath::Sin(openingAngle);
c1637e41 753 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
754 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
755 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
756 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
757 //
74518339 758 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
759 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
760 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
761 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
762 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
763 //
764 shv->AddNode(elv,1);
765 //
d899e254 766 ys = shift*TMath::Sin(openingAngle);
767 xs = shift*TMath::Cos(openingAngle);
c1637e41 768 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
769 // cover
770 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
771 co->DefineSection(0,-0.5,77.,255.25);
772 co->DefineSection(1,0.5,77.,255.25);
773 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
774 // hole in a cover
775 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
d899e254 776 shift=4./TMath::Sin(openingAngle);
c1637e41 777 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
778 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
779 //
780 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
781 //
d899e254 782 ys = shift*TMath::Sin(openingAngle);
783 xs = shift*TMath::Cos(openingAngle);
c1637e41 784 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
785 //
786 // Sector as an Assembly
787 //
788 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
789 swhs->AddNode(swv,1);
790 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
791 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
792 //
793 // SSW as an Assembly of sectors
794 //
795 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
796 for(Int_t i =0;i<18;i++){
797 Double_t phi = (20.*i);
798 TGeoRotation *r = new TGeoRotation();
799 r->RotateZ(phi);
800 swheel->AddNode(swhs,i+1,r);
801 }
802 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
803 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
804 //
37831078 805 //----------------------------------------------------------
806 // TPc Support Rods - MAKROLON
807 //----------------------------------------------------------
c1637e41 808 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
809 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
810 // upper and lower rods differ in length!
811 Double_t *upar;
812 upar=NULL;
813 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
814 upar=new Double_t [3];
815 upar[0]=1.8;
816 upar[1]=2.2;
817
818 //
819 //HV rods - makrolon + 0.58cm (diameter) Cu
ae4806ca 820 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
c1637e41 821 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
822 //
823 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
824 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
825 hvrv->AddNode(hvcv,1);
7281dc07 826 for(Int_t i=0;i<18;i++){
c1637e41 827 Double_t angle,x,y;
828 Double_t z,r;
829 angle=TMath::DegToRad()*20.*(Double_t)i;
830 r=81.5;
831 x=r * TMath::Cos(angle);
832 y=r * TMath::Sin(angle);
833 upar[2]=126.64; //lower
834 z= 126.96;
835 if(i==15){
836 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));
837 v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z));
79575d04 838 }
c1637e41 839 else{
840 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
841 gGeoManager->Node("TPC_Rod",i+18,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
842 }
843 r=254.25;
844 x=r * TMath::Cos(angle);
845 y=r * TMath::Sin(angle);
846 upar[2]=126.54; //upper
847 z=127.06;
848 gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
849 gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
37831078 850 }
851
bde68ab0 852 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
853 alice->AddNode(v1,1);
854
37831078 855
1283eee5 856
857} // end of function
4b0fdcad 858
859//_____________________________________________________________________________
860void AliTPCv3::DrawDetector()
861{
862 //
79575d04 863 // Draw a shaded view of the Time Projection Chamber version 3
4b0fdcad 864 //
865
866
867 // Set everything unseen
868 gMC->Gsatt("*", "seen", -1);
869 //
870 // Set ALIC mother transparent
871 gMC->Gsatt("ALIC","SEEN",0);
872 //
873 // Set the volumes visible
37831078 874 //
875
876 gMC->Gsatt("TPC ","SEEN",0);
877 gMC->Gsatt("TOIN","SEEN",1);
878 gMC->Gsatt("TOIN","COLO",7);
37831078 879 gMC->Gsatt("TOCV","SEEN",1);
880 gMC->Gsatt("TOCV","COLO",4);
881 gMC->Gsatt("TSA1","SEEN",0);
882 gMC->Gsatt("TSA2","SEEN",0);
883 gMC->Gsatt("TSA3","SEEN",0);
79575d04 884 gMC->Gsatt("TSA4","SEEN",0);
885 gMC->Gsatt("TSA5","SEEN",0);
37831078 886 gMC->Gsatt("TOFC","SEEN",1);
887 gMC->Gsatt("TOFC","COLO",4);
37831078 888 gMC->Gsatt("TSA6","SEEN",0);
889 gMC->Gsatt("TSA7","SEEN",0);
79575d04 890 gMC->Gsatt("TSA8","SEEN",0);
37831078 891 gMC->Gsatt("TIIN","SEEN",1);
79575d04 892 gMC->Gsatt("TIIN","COLO",7);
893 gMC->Gsatt("TII1","SEEN",0);
894 gMC->Gsatt("TIFC","SEEN",1);
895 gMC->Gsatt("TIFC","COLO",4);
896 gMC->Gsatt("TSA9","SEEN",0);
37831078 897 gMC->Gsatt("TS10","SEEN",0);
898 gMC->Gsatt("TS11","SEEN",0);
899 gMC->Gsatt("TS12","SEEN",0);
37831078 900 gMC->Gsatt("TS13","SEEN",0);
901 gMC->Gsatt("TS14","SEEN",0);
79575d04 902 gMC->Gsatt("TICC","SEEN",0);
903 gMC->Gsatt("TICM","SEEN",0);
37831078 904 gMC->Gsatt("TS15","SEEN",0);
905 gMC->Gsatt("TS16","SEEN",0);
37831078 906 gMC->Gsatt("TS17","SEEN",0);
79575d04 907 gMC->Gsatt("TS18","SEEN",0);
908 gMC->Gsatt("TS19","SEEN",0);
909 gMC->Gsatt("TPJ1","SEEN",0);
910 gMC->Gsatt("TPJ2","SEEN",0);
911 gMC->Gsatt("TICS","SEEN",0);
912 gMC->Gsatt("TDGS","SEEN",0);
37831078 913 gMC->Gsatt("TIRC","SEEN",0);
914 gMC->Gsatt("TIC1","SEEN",1);
915 gMC->Gsatt("TIPP","SEEN",0);
916 gMC->Gsatt("TIC3","SEEN",0);
917 gMC->Gsatt("TRCE","SEEN",0);
918 gMC->Gsatt("TPSC","SEEN",0);
79575d04 919 gMC->Gsatt("TPCC","SEEN",0);
37831078 920 gMC->Gsatt("TORC","SEEN",0);
921 gMC->Gsatt("TOPP","SEEN",0);
922 gMC->Gsatt("TOC3","SEEN",0);
923 gMC->Gsatt("TOC1","SEEN",1);
924 gMC->Gsatt("TSSW","SEEN",1);
925 gMC->Gsatt("TSWC","SEEN",1);
37831078 926 gMC->Gsatt("TSSW","COLO",3);
927 gMC->Gsatt("TSWC","COLO",3);
928 gMC->Gsatt("TSCE","COLO",6);
79575d04 929 gMC->Gsatt("TSCE","SEEN",1);
37831078 930 gMC->Gsatt("TWES","SEEN",0);
931 gMC->Gsatt("TSWB","SEEN",0);
932 gMC->Gsatt("TPEL","SEEN",0);
933 gMC->Gsatt("TPMW","SEEN",1);
37831078 934 gMC->Gsatt("TESR","SEEN",1);
935 gMC->Gsatt("TPMW","COLO",12);
37831078 936 gMC->Gsatt("TIC1","COLO",5);
79575d04 937 gMC->Gsatt("TOC1","COLO",5);
37831078 938 gMC->Gsatt("TESB","SEEN",0);
37831078 939 gMC->Gsatt("THVM","SEEN",1);
940 gMC->Gsatt("THVM","COLO",11);
79575d04 941 gMC->Gsatt("THVH","SEEN",0);
942 gMC->Gsatt("TPSR","SEEN",0);
37831078 943 gMC->Gsatt("THVL","SEEN",0);
79575d04 944 gMC->Gsatt("THVC","SEEN",0);
37831078 945 gMC->Gsatt("THVE","SEEN",0);
946 gMC->Gsatt("THVR","SEEN",0);
947
4b0fdcad 948 //
949 gMC->Gdopt("hide", "on");
950 gMC->Gdopt("shad", "on");
951 gMC->Gsatt("*", "fill", 7);
952 gMC->SetClipBox(".");
37831078 953 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
954 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
955 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
956 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
957 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
4b0fdcad 958 gMC->DefaultRange();
959 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
960 gMC->Gdhead(1111, "Time Projection Chamber");
961 gMC->Gdman(18, 4, "MAN");
962 gMC->Gdopt("hide","off");
963}
964
965//_____________________________________________________________________________
966void AliTPCv3::CreateMaterials()
967{
968 //
969 // Define materials for version 2 of the Time Projection Chamber
970 //
971
972
973 //
4b0fdcad 974 AliTPC::CreateMaterials();
975}
976
977//_____________________________________________________________________________
978void AliTPCv3::Init()
979{
980 //
981 // Initialises version 3 of the TPC after that it has been built
982 //
37831078 983 Int_t *idtmed = fIdtmed->GetArray();
4b0fdcad 984
985 AliTPC::Init();
986
c1637e41 987 fIdSens=gMC->VolId("TPC_Drift"); // drift gas as a sensitive volume
4b0fdcad 988
d9888f70 989 gMC->SetMaxNStep(-30000); // max. number of steps increased
4b0fdcad 990
37831078 991 gMC->Gstpar(idtmed[2],"LOSS",5);
4b0fdcad 992
13a8c8d7 993 printf("%s: *** TPC version 3 initialized***\n",ClassName());
994
995 printf("%s: Maximum number of steps = %d\n",ClassName(),gMC->GetMaxNStep());
996
997 // printf("*** TPC version 3 initialized ***\n");
998 // printf("Maximum number of steps = %d\n",gMC->GetMaxNStep());
4b0fdcad 999
1000 //
1001
1002}
1003
1004//_____________________________________________________________________________
1005void AliTPCv3::StepManager()
1006{
1007 //
1008 // Called for every step in the Time Projection Chamber
1009 //
1010
1011 //
1012 // parameters used for the energy loss calculations
1013 //
73042f01 1014 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1015 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1016 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
4b0fdcad 1017
1018
73042f01 1019 const Float_t kbig = 1.e10;
4b0fdcad 1020
1021 Int_t id,copy;
1022 TLorentzVector pos;
e61fd20d 1023 Float_t hits[5];
4b0fdcad 1024 Int_t vol[2];
4b0fdcad 1025
1026 vol[1]=0;
1027 vol[0]=0;
1028
1029 //
1030
73042f01 1031 gMC->SetMaxStep(kbig);
4b0fdcad 1032
1033 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1034
1035 Float_t charge = gMC->TrackCharge();
1036
1037 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1038
1039
1040 id=gMC->CurrentVolID(copy);
c1637e41 1041
4b0fdcad 1042
37831078 1043 if (id != fIdSens) return;
4b0fdcad 1044
1045 //
1046 // charged particle is in the sensitive volume
1047 //
1048
1049 if(gMC->TrackStep() > 0) {
1050
1051
73042f01 1052 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
4b0fdcad 1053 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1054
1055 gMC->TrackPosition(pos);
1056 hits[0]=pos[0];
1057 hits[1]=pos[1];
1058 hits[2]=pos[2];
1059
e61fd20d 1060 // Get also the track time for pileup simulation
1061 hits[4]=gMC->TrackTime();
1062
4b0fdcad 1063 //
1064 // check the selected side of the TPC
1065 //
1066
1067 if(fSide && fSide*hits[2]<=0.) return;
1068
1069 hits[3]=(Float_t)nel;
1070
1071 // Add this hit
1072
5d12ce38 1073 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); //MI change
4b0fdcad 1074
1075 }
1076
1077 // Stemax calculation for the next step
1078
1079 Float_t pp;
1080 TLorentzVector mom;
1081 gMC->TrackMomentum(mom);
1082 Float_t ptot=mom.Rho();
73042f01 1083 Float_t betaGamma = ptot/gMC->TrackMass();
4b0fdcad 1084
69e40cce 1085 Int_t pid=gMC->TrackPid();
cc80f89e 1086 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
4b0fdcad 1087 {
73042f01 1088 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
4b0fdcad 1089 }
1090 else
1091 {
7b562732 1092 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3);
73042f01 1093 pp=kprim*BetheBloch(betaGamma);
4b0fdcad 1094 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1095 }
1096
b9d0a01d 1097 Double_t rnd = gMC->GetRandom()->Rndm();
4b0fdcad 1098
1099 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1100
1101}
1102
1103//_____________________________________________________________________________
1104Float_t AliTPCv3::BetheBloch(Float_t bg)
1105{
1106 //
1107 // Bethe-Bloch energy loss formula
1108 //
73042f01 1109 const Double_t kp1=0.76176e-1;
1110 const Double_t kp2=10.632;
1111 const Double_t kp3=0.13279e-4;
1112 const Double_t kp4=1.8631;
1113 const Double_t kp5=1.9479;
4b0fdcad 1114
1115 Double_t dbg = (Double_t) bg;
1116
1117 Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
1118
73042f01 1119 Double_t aa = TMath::Power(beta,kp4);
1120 Double_t bb = TMath::Power(1./dbg,kp5);
4b0fdcad 1121
73042f01 1122 bb=TMath::Log(kp3+bb);
4b0fdcad 1123
73042f01 1124 return ((Float_t)((kp2-aa-bb)*kp1/aa));
4b0fdcad 1125}