Including TFile.h
[u/mrichter/AliRoot.git] / TPC / AliTPCv2.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//
fe4da5cc 19///////////////////////////////////////////////////////////////////////////////
20// //
21// Time Projection Chamber version 2 -- detailed TPC and slow simulation //
22// //
23//Begin_Html
24/*
1439f98e 25<img src="picts/AliTPCv2Class.gif">
fe4da5cc 26*/
27//End_Html
28// //
29// //
30///////////////////////////////////////////////////////////////////////////////
116cbefd 31
2a49965d 32#include <stdlib.h>
fe4da5cc 33
88cb7938 34#include <TLorentzVector.h>
fe4da5cc 35#include <TMath.h>
116cbefd 36#include <TPDGCode.h>
f77f13c8 37#include <TVirtualMC.h>
bcac8ae4 38
fe4da5cc 39#include "AliConst.h"
f77f13c8 40#include "AliLog.h"
41#include "AliMC.h"
116cbefd 42#include "AliRun.h"
43#include "AliTPCDigitsArray.h"
73042f01 44#include "AliTPCParam.h"
45#include "AliTPCParamSR.h"
4ed5dced 46#include "AliTPCTrackHitsV2.h"
116cbefd 47#include "AliTPCv2.h"
c1637e41 48#include "TGeoManager.h"
49#include "TGeoVolume.h"
50#include "TGeoPcon.h"
51#include "TGeoTube.h"
52#include "TGeoPgon.h"
53#include "TGeoTrd1.h"
54#include "TGeoCompositeShape.h"
55#include "TGeoPara.h"
fe4da5cc 56ClassImp(AliTPCv2)
57
58//_____________________________________________________________________________
59AliTPCv2::AliTPCv2(const char *name, const char *title) :
60 AliTPC(name, title)
61{
62 //
63 // Standard constructor for Time Projection Chamber version 2
64 //
37831078 65
c1637e41 66 SetSens(-1); // no strips selected
73042f01 67
73042f01 68
c1637e41 69 SetBufferSize(128000);
73042f01 70
73042f01 71
72 if (fTPCParam)
73 fTPCParam->Write(fTPCParam->GetTitle());
fe4da5cc 74}
75
76//_____________________________________________________________________________
77void AliTPCv2::CreateGeometry()
78{
79 //
80 // Create the geometry of Time Projection Chamber version 2
81 //
82 //Begin_Html
83 /*
37831078 84 <img src="picts/AliTPC.gif">
fe4da5cc 85 */
86 //End_Html
87 //Begin_Html
88 /*
1439f98e 89 <img src="picts/AliTPCv2Tree.gif">
fe4da5cc 90 */
91 //End_Html
92
c1637e41 93 //----------------------------------------------------------
94 // This geometry is written using TGeo class
95 // Firstly the shapes are defined, and only then the volumes
96 // What is recognized by the MC are volumes
97 //----------------------------------------------------------
37831078 98 //
c1637e41 99 // tpc - this will be the mother volume
37831078 100 //
79575d04 101
37831078 102 //
c1637e41 103 // here I define a volume TPC
104 // retrive the medium name with "TPC_" as a leading string
37831078 105 //
c1637e41 106 TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections
107 tpc->DefineSection(0,-290.,77.,278.);
108 tpc->DefineSection(1,-259.6,77.,278.);
37831078 109 //
c1637e41 110 tpc->DefineSection(2,-259.6,68.1,278.);
111 tpc->DefineSection(3,-253.6,68.1,278.);
37831078 112 //
c1637e41 113 tpc->DefineSection(4,-253.6,68.,278.);
114 tpc->DefineSection(5,-74.0,60.8,278.);
37831078 115 //
c1637e41 116 tpc->DefineSection(6,-74.0,60.1,278.);
117 tpc->DefineSection(7,-73.3,60.1,278.);
37831078 118 //
c1637e41 119 tpc->DefineSection(8,-73.3,56.9,278.);
120 tpc->DefineSection(9,73.3,56.9,278.);
37831078 121 //
c1637e41 122 tpc->DefineSection(10,73.3,60.1,278.);
123 tpc->DefineSection(11,74.0,60.1,278.);
37831078 124 //
c1637e41 125 tpc->DefineSection(12,74.0,60.8,278.);
126 tpc->DefineSection(13,253.6,65.5,278.);
37831078 127 //
c1637e41 128 tpc->DefineSection(14,253.6,65.6,278.);
129 tpc->DefineSection(15,259.6,65.6,278.);
37831078 130 //
c1637e41 131 tpc->DefineSection(16,259.6,77.0,278.);
132 tpc->DefineSection(17,290.,77.,278.);
37831078 133 //
c1637e41 134 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
135 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
79575d04 136 //
c1637e41 137 // drift volume - sensitive volume, extended beyond the
138 // endcaps, because of the alignment
37831078 139 //
c1637e41 140 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
141 dvol->DefineSection(0,-260.,74.5,264.4);
142 dvol->DefineSection(1,-253.6,74.5,264.4);
37831078 143 //
c1637e41 144 dvol->DefineSection(2,-253.6,76.6774,258.);
145 dvol->DefineSection(3,253.6,76.6774,258.);
37831078 146 //
c1637e41 147 dvol->DefineSection(4,253.6,74.5,264.4);
148 dvol->DefineSection(5,260.,74.5,264.4);
37831078 149 //
c1637e41 150 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-2");
151 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
37831078 152 //
c1637e41 153 v1->AddNode(v9,1);
37831078 154 //
c1637e41 155 // outer insulator
720b23b8 156 //
c1637e41 157 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
79575d04 158 //
c1637e41 159 tpco->DefineSection(0,-256.6,264.8,278.);
160 tpco->DefineSection(1,-253.6,264.8,278.);
161 //
162 tpco->DefineSection(2,-253.6,258.,278.);
163 tpco->DefineSection(3,250.6,258.,278.);
164 //
165 tpco->DefineSection(4,250.6,258.,275.5);
166 tpco->DefineSection(5,253.6,258.,275.5);
167 //
168 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
169 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
170 //
171 // outer containment vessel
172 //
173 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
174 //
175 tocv->DefineSection(0,-256.6,264.8,278.);
176 tocv->DefineSection(1,-253.6,264.8,278.);
177 //
178 tocv->DefineSection(2,-253.6,274.8124,278.);
179 tocv->DefineSection(3,247.6,274.8124,278.);
180 //
181 tocv->DefineSection(4,247.6,270.4,278.);
182 tocv->DefineSection(5,250.6,270.4,278.);
183 //
184 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
185 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
186 //
187 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
188 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
189 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
190 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
191 //
192 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
193 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
194 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
195 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
196 //
197 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
198 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
199 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
200 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
201 //-------------------------------------------------------
37831078 202 // Tpc Outer Field Cage
c1637e41 203 // daughters - composite (sandwich)
37831078 204 //-------------------------------------------------------
1283eee5 205
c1637e41 206 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
79575d04 207 //
c1637e41 208 tofc->DefineSection(0,-253.6,258.,269.6);
209 tofc->DefineSection(1,-250.6,258.,269.6);
37831078 210 //
c1637e41 211 tofc->DefineSection(2,-250.6,258.,260.0676);
212 tofc->DefineSection(3,250.6,258.,260.0676);
37831078 213 //
c1637e41 214 tofc->DefineSection(4,250.6,258.,275.5);
215 tofc->DefineSection(5,253.6,258.,275.5);
37831078 216 //
c1637e41 217 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
218 //sandwich
219 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
220 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
221 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
37831078 222 //
c1637e41 223 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
37831078 224 //
c1637e41 225 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
226 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
227 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
37831078 228 //
c1637e41 229 // outer part - positioning
37831078 230 //
c1637e41 231 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
37831078 232 //
c1637e41 233 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
37831078 234 //
c1637e41 235 v3->AddNode(tov1,1); v4->AddNode(tf1v,1);
37831078 236 //
c1637e41 237 v2->AddNode(v3,1); v2->AddNode(v4,1);
37831078 238 //
c1637e41 239 v1->AddNode(v2,1);
240 //--------------------------------------------------------------------
241 // Tpc Inner INsulator (CO2)
242 // the cones, the central drum and the inner f.c. sandwich with a piece
243 // of the flane will be placed in the TPC
244 //--------------------------------------------------------------------
245 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
37831078 246 //
c1637e41 247 tpci->DefineSection(0,-253.6,68.4,76.6774);
248 tpci->DefineSection(1,-74.0,61.2,76.6774);
37831078 249 //
c1637e41 250 tpci->DefineSection(2,74.0,61.2,76.6774);
37831078 251 //
c1637e41 252 tpci->DefineSection(3,253.6,65.9,76.6774);
37831078 253 //
c1637e41 254 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
37831078 255 //
c1637e41 256 // now the inner field cage - only part of flanges (2 copies)
37831078 257 //
c1637e41 258 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
259 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
37831078 260 //
c1637e41 261 //---------------------------------------------------------
262 // Tpc Inner Containment vessel - Muon side
79575d04 263 //---------------------------------------------------------
c1637e41 264 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
37831078 265 //
c1637e41 266 tcms->DefineSection(0,-259.1,68.1,74.2);
267 tcms->DefineSection(1,-253.6,68.1,74.2);
37831078 268 //
c1637e41 269 tcms->DefineSection(2,-253.6,68.1,68.4);
270 tcms->DefineSection(3,-74.0,60.9,61.2);
37831078 271 //
c1637e41 272 tcms->DefineSection(4,-74.0,60.1,61.2);
273 tcms->DefineSection(5,-73.3,60.1,61.2);
37831078 274 //
c1637e41 275 tcms->DefineSection(6,-73.3,56.9,61.2);
276 tcms->DefineSection(7,-73.0,56.9,61.2);
37831078 277 //
c1637e41 278 tcms->DefineSection(8,-73.0,56.9,58.8);
279 tcms->DefineSection(9,-71.3,56.9,58.8);
37831078 280 //
c1637e41 281 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
282 //-----------------------------------------------
283 // inner containment vessel - shaft side
284 //-----------------------------------------------
285 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
37831078 286 //
c1637e41 287 tcss->DefineSection(0,71.3,56.9,58.8);
288 tcss->DefineSection(1,73.0,56.9,58.8);
1283eee5 289 //
c1637e41 290 tcss->DefineSection(2,73.0,56.9,61.2);
291 tcss->DefineSection(3,73.3,56.9,61.2);
292 //
293 tcss->DefineSection(4,73.3,60.1,61.2);
294 tcss->DefineSection(5,74.0,60.1,61.2);
1283eee5 295 //
c1637e41 296 tcss->DefineSection(6,74.0,60.9,61.2);
297 tcss->DefineSection(7,253.6,65.6,65.9);
37831078 298 //
c1637e41 299 tcss->DefineSection(8,253.6,65.6,74.2);
300 tcss->DefineSection(9,258.1,65.6,74.2);
1283eee5 301 //
c1637e41 302 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
303 //-----------------------------------------------
304 // Inner field cage
305 // define 4 parts and make an assembly
306 //-----------------------------------------------
307 // part1 - Al - 2 copies
308 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
309 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
310 // sandwich - outermost parts - 2 copies
311 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
312 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
313 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
314 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
1283eee5 315 //
c1637e41 316 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
317 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
318 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
319 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
37831078 320 //
c1637e41 321 // middle parts - 2 copies
322 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
323 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
324 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
325 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
79575d04 326 //
c1637e41 327 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
328 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
329 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
330 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
331 // central part - 1 copy
332 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
333 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
334 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
79575d04 335 //
c1637e41 336 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
337 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
338 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
79575d04 339 //
c1637e41 340 // inner part - positioning
79575d04 341 //
c1637e41 342 // creating a sandwich
343 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
79575d04 344 //
c1637e41 345 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
79575d04 346 //
c1637e41 347 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
37831078 348 //
c1637e41 349 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
37831078 350 //
c1637e41 351 tv100->AddNode(tv10,1);
352 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
353 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
354 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
355 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
356 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
357 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
358 //
359 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
360 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
361 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
362 v9->AddNode(tv100,1);
363 //
364 // central drum
365 //
366 // flange + sandwich
367 //
368 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
369 cfl->DefineSection(0,-71.1,59.7,61.2);
370 cfl->DefineSection(1,-68.6,59.7,61.2);
371 //
372 cfl->DefineSection(2,-68.6,60.6324,61.2);
373 cfl->DefineSection(3,68.6,60.6324,61.2);
374 //
375 cfl->DefineSection(4,68.6,59.7,61.2);
376 cfl->DefineSection(5,71.1,59.7,61.2);
377 //
378 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
379 // sandwich
380 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
381 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
382 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
383 //
384 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
385 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
386 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
387 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
388 //
389 // seals for central drum 2 copies
390 //
391 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
392 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
393 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
394 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.));
395 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.));
396 //
397 // seal collars
398 TGeoPcon *se = new TGeoPcon(0.,360.,6);
399 se->DefineSection(0,-72.8,59.7,61.2);
400 se->DefineSection(1,-72.3,59.7,61.2);
401 //
402 se->DefineSection(2,-72.3,58.85,61.2);
403 se->DefineSection(3,-71.6,58.85,61.2);
404 //
405 se->DefineSection(4,-71.6,59.7,61.2);
406 se->DefineSection(5,-71.3,59.7,61.2);
407 //
408 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
409 //
410 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
411 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
412 //
413 // define reflection matrix
414 //
415 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,270.,180.,0.);
416 //
417 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
418 //
419 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-72.1));
420 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,72.1));
421 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
422 //
423 // central membrane - 2 rings and a mylar membrane - assembly
424 //
425 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
426 TGeoTube *oh = new TGeoTube(250.,256.,.5);
427 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
428 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
429 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
430 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
431 //
432 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
433 cm->AddNode(ihv,1);
434 cm->AddNode(ohv,1);
435 cm->AddNode(memv,1);
436 v9->AddNode(cm,1);
437 //
438 // end caps - they are make as an assembly of single segments
439 // containing both readout chambers
440 //
441 Double_t OpeningAngle = 10.*TMath::DegToRad();
442 Double_t thick=1.5; // rib
443 Double_t shift = thick/TMath::Sin(OpeningAngle);
444 //
445 Double_t LowEdge = 86.3; // hole in the wheel
446 Double_t UpEdge = 240.4; // hole in the wheel
447 //
448 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
449 //
450 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
451 //
452 hole->DefineSection(0,-3.5,LowEdge-shift,UpEdge-shift);
453 hole->DefineSection(1,-1.5,LowEdge-shift,UpEdge-shift);
454 //
455 hole->DefineSection(2,-1.5,LowEdge-shift,UpEdge+3.-shift);
456 hole->DefineSection(3,3.5,LowEdge-shift,UpEdge+3.-shift);
457 //
458 Double_t ys = shift*TMath::Sin(OpeningAngle);
459 Double_t xs = shift*TMath::Cos(OpeningAngle);
460 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
461 tr->RegisterYourself();
462 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
463 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
464 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
465 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
466 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
467 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
468 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
469 //
470 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
471 //
472 // readout chambers
473 //
474 // IROC first
475 //
476 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
477 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
37831078 478 // empty space
c1637e41 479 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
480 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
481 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
482 //bars
483 Double_t tga = (19.8328-12.3742)/39.3;
484 Double_t xmin,xmax;
485 xmin = 9.55*tga+12.3742;
486 xmax = 9.95*tga+12.3742;
487 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
488 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
489 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
490 xmin=19.4*tga+12.3742;
491 xmax=19.9*tga+12.3742;
492 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
493 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
494 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
495 xmin=29.35*tga+12.3742;
496 xmax=29.75*tga+12.3742;
497 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
498 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
499 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
500 //
501 // holes for connectors
502 //
503 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
504 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
505 ifstream in;
506 in.open("conn_iroc.dat", ios_base::in); // asci file
507 for(Int_t i =0;i<86;i++){
508 Double_t y = 3.9;
509 Double_t x,z,ang;
510 in>>x>>z>>ang;
511 TGeoRotation *rrr = new TGeoRotation();
512 rrr->RotateY(ang);
513 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
514 ibdv->AddNode(connv,i+1,trans);
515 }
516 in.close();
517 // "cap"
518 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
519 // "hole"
520 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
521 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
522 tr1->RegisterYourself();
523 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
524 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
525 //
526 // pad plane and wire fixations
527 //
528 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
529 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
530 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
531 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
532 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
533 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
534 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
535 //
536 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
537 //
538 iroc->AddNode(ibdv,1);
539 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
540 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
541 tga =(23.3521-14.5974)/49.65;
542 Double_t xx = 24.825*tga+14.5974-0.6;
543 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
544 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
545 //
546 // OROC
547 //
548 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
549 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
550 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
551 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
552 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
553 //horizontal bars
554 tga=(38.5084-20.2938)/99.3;
555 xmin=tga*10.2+20.2938;
556 xmax=tga*10.6+20.2938;
557 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
558 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
559 //
560 xmin=22.55*tga+20.2938;
561 xmax=24.15*tga+20.2938;
562 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
563 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
564 //
565 xmin=36.1*tga+20.2938;
566 xmax=36.5*tga+20.2938;
567 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
568 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
569 //
570 xmin=49.0*tga+20.2938;
571 xmax=50.6*tga+20.2938;
572 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
573 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
574 //
575 xmin=63.6*tga+20.2938;
576 xmax=64.0*tga+20.2938;
577 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
578 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
579 //
580 xmin=75.5*tga+20.2938;
581 xmax=77.15*tga+20.2938;
582 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
583 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
584 //
585 xmin=88.7*tga+20.2938;
586 xmax=89.1*tga+20.2938;
587 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
588 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
589 //
590 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
591 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
592 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
593 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
594 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
595 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
596 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
597 // vertical bars
598 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
599 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
600 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
601 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
602 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
603 //
604 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
605 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
606 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
607 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
608 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
609 //
610 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
611 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
612 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
613 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
614 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
615 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
616 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
617 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
618 //
619 // holes for connectors
620 //
621 in.open("conn_oroc.dat", ios_base::in); // asci file
622 for(Int_t i =0;i<78;i++){
623 Double_t y =3.89;
624 Double_t x,z,ang;
625 Double_t x1,z1,x2,z2;
626 in>>x>>z>>ang;
627 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
628 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
629 //
630 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
631 //
632 TGeoRotation *rr = new TGeoRotation();
633 rr->RotateY(ang);
634 z1-=54.95;
635 z2-=54.95;
636 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
637 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
638 obdv->AddNode(connv,i+1,trans1);
639 obdv->AddNode(connv,i+79,trans2);
640 }
641 in.close();
642 // cap
643 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
644 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
645 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
646 tr5->RegisterYourself();
647 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
648 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
649 //
650 // pad plane and wire fixations
651 //
652 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
653 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
654 //
655 tga=(43.5239-23.3874)/114.2;
656 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
657 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
658 xx = 57.1*tga+23.3874-0.7;
659 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
660 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
661 //
662 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
663 //
664 oroc->AddNode(obdv,1);
665 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
666 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
667 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
668 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
669 //
670 // now iroc and oroc are placed into a sector...
671 //
672 TGeoVolumeAssembly *sect = new TGeoVolumeAssembly("TPC_SECT");
673 TGeoRotation rot1("rot1",90.,90.,0.);
674 TGeoRotation rot2("rot2");
675 rot2.RotateY(10.);
676 TGeoRotation *rot = new TGeoRotation("rot");
677 *rot=rot1*rot2;
678 //
679 Double_t x0,y0;
680 x0=110.2*TMath::Cos(OpeningAngle);
681 y0=110.2*TMath::Sin(OpeningAngle);
682 TGeoCombiTrans *combi1 = new TGeoCombiTrans("combi1",x0,y0,1.09,rot);
683 x0=188.45*TMath::Cos(OpeningAngle);
684 y0=188.45*TMath::Sin(OpeningAngle);
685 TGeoCombiTrans *combi2 = new TGeoCombiTrans("combi2",x0,y0,0.99,rot);
686 //
687 sect->AddNode(ch,1);
688 sect->AddNode(iroc,1,combi1);
689 sect->AddNode(oroc,1,combi2);
690 //
691 // segment is ready...
692 // now I try to make a wheel...
693 //
694 TGeoVolumeAssembly *wheel = new TGeoVolumeAssembly("TPC_ENDCAP");
695 //
696 for(Int_t i =0;i<18;i++){
697 Double_t phi = (20.*i);
698 TGeoRotation *r = new TGeoRotation();
699 r->RotateZ(phi);
700 wheel->AddNode(sect,i+1,r);
701
702 }
703 // wheels in the drift volume!
704 v9->AddNode(wheel,1,new TGeoTranslation(0.,0.,-256.6));
705 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
706 v9->AddNode(wheel,2,combi3);
37831078 707
c1637e41 708 //_____________________________________________________________
709 // service support wheel
710 //_____________________________________________________________
711 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
712 sw->DefineSection(0,-4.,80.5,251.75);
713 sw->DefineSection(1,4.,80.5,251.75);
714 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
715 //
716 thick=1.;
717 shift = thick/TMath::Sin(OpeningAngle);
718 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
719 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
720 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
721 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
722 //
723 ys = shift*TMath::Sin(OpeningAngle);
724 xs = shift*TMath::Cos(OpeningAngle);
725 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
726 // cover
727 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
728 co->DefineSection(0,-0.5,77.,255.25);
729 co->DefineSection(1,0.5,77.,255.25);
730 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
731 // hole in a cover
732 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
733 shift=4./TMath::Sin(OpeningAngle);
734 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
735 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
736 //
737 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
738 //
739 ys = shift*TMath::Sin(OpeningAngle);
740 xs = shift*TMath::Cos(OpeningAngle);
741 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
742 //
743 // Sector as an Assembly
744 //
745 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
746 swhs->AddNode(swv,1);
747 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
748 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
749 //
750 // SSW as an Assembly of sectors
751 //
752 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
753 for(Int_t i =0;i<18;i++){
754 Double_t phi = (20.*i);
755 TGeoRotation *r = new TGeoRotation();
756 r->RotateZ(phi);
757 swheel->AddNode(swhs,i+1,r);
758 }
759 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
760 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
761
762 // sensitive strips - strip "0" is always set
763 // conditional
764 Int_t totrows;
765 totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp();
766 Double_t *upar;
767 upar=NULL;
768 gGeoManager->Volume("TPC_Strip","PGON",m5->GetId(),upar);
769 upar=new Double_t [10];
770 upar[0]=0.;
771 upar[1]=360.;
772 upar[2]=18.;
773 upar[3]=2.;
774 //
775 upar[4]=-124.8;
776 upar[7]=124.8;
777
778 Double_t rlow=fTPCParam->GetPadRowRadiiLow(0);
779
780 upar[5]=rlow;
781 upar[6]=rlow+.01;
782 upar[8]=upar[5];
783 upar[9]=upar[6];
784 //
785 gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
786 gGeoManager->Node("TPC_Strip",totrows+1,
787 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
788 //
789 // now, strips optionally
790 //
791 if(fSens){
792 //lower sectors
793 for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){
794 rlow=fTPCParam->GetPadRowRadiiLow(i-1);
795 upar[5]=rlow;
796 upar[6]=rlow+.01;
797 upar[8]=upar[5];
798 upar[9]=upar[6];
799 gGeoManager->Node("TPC_Strip",i,
800 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
801 gGeoManager->Node("TPC_Strip",totrows+i,
802 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
803 }
804 //upper sectors
805 for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){
806 rlow=fTPCParam->GetPadRowRadiiUp(i-1);
807 upar[5]=rlow;
808 upar[6]=rlow+.01;
809 upar[8]=upar[5];
810 upar[9]=upar[6];
811 gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(),
812 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
813 gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(),
814 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
815 }
816 }//strips
37831078 817 //----------------------------------------------------------
c1637e41 818 // TPc Support Rods - MAKROLON
37831078 819 //----------------------------------------------------------
c1637e41 820 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
821 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
822 // upper and lower rods differ in length!
823 delete [] upar;
824 upar=NULL;
825 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
826 upar=new Double_t [3];
827 upar[0]=1.8;
828 upar[1]=2.2;
1283eee5 829
c1637e41 830 //
831 //HV rods - makrolon + 0.58cm (diameter) Cu
832 TGeoTube *hvr = new TGeoTube(0.,4.4,126.64);
833 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
834 //
835 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
836 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
837 hvrv->AddNode(hvcv,1);
838
839 for(Int_t i=0;i<17;i++){
840 Double_t angle,x,y;
841 Double_t z,r;
842 angle=TMath::DegToRad()*20.*(Double_t)i;
843 r=81.5;
844 x=r * TMath::Cos(angle);
845 y=r * TMath::Sin(angle);
846 upar[2]=126.64; //lower
847 z= 126.96;
848 if(i==15){
849 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));
850 v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z));
37831078 851 }
852 else{
c1637e41 853 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
854 gGeoManager->Node("TPC_Rod",i+18,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
37831078 855 }
c1637e41 856 r=254.25;
857 x=r * TMath::Cos(angle);
858 y=r * TMath::Sin(angle);
859 upar[2]=126.54; //upper
860 z=127.06;
861 gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
862 gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
37831078 863 }
1283eee5 864
c1637e41 865
866 gMC->Gspos("TPC_M ",1,"ALIC",0.,0.,0.,0,"ONLY");
1283eee5 867
868} // end of function
fe4da5cc 869
870//_____________________________________________________________________________
8c555625 871void AliTPCv2::DrawDetector()
fe4da5cc 872{
873 //
874 // Draw a shaded view of the Time Projection Chamber version 1
875 //
876
fe4da5cc 877 // Set everything unseen
cfce8870 878 gMC->Gsatt("*", "seen", -1);
fe4da5cc 879 //
880 // Set ALIC mother transparent
cfce8870 881 gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc 882 //
883 // Set the volumes visible
37831078 884 //
885
886 gMC->Gsatt("TPC ","SEEN",0);
887 gMC->Gsatt("TOIN","SEEN",1);
888 gMC->Gsatt("TOIN","COLO",7);
37831078 889 gMC->Gsatt("TOCV","SEEN",1);
890 gMC->Gsatt("TOCV","COLO",4);
891 gMC->Gsatt("TSA1","SEEN",0);
892 gMC->Gsatt("TSA2","SEEN",0);
893 gMC->Gsatt("TSA3","SEEN",0);
79575d04 894 gMC->Gsatt("TSA4","SEEN",0);
895 gMC->Gsatt("TSA5","SEEN",0);
37831078 896 gMC->Gsatt("TOFC","SEEN",1);
897 gMC->Gsatt("TOFC","COLO",4);
37831078 898 gMC->Gsatt("TSA6","SEEN",0);
899 gMC->Gsatt("TSA7","SEEN",0);
79575d04 900 gMC->Gsatt("TSA8","SEEN",0);
37831078 901 gMC->Gsatt("TIIN","SEEN",1);
79575d04 902 gMC->Gsatt("TIIN","COLO",7);
903 gMC->Gsatt("TII1","SEEN",0);
904 gMC->Gsatt("TIFC","SEEN",1);
905 gMC->Gsatt("TIFC","COLO",4);
906 gMC->Gsatt("TSA9","SEEN",0);
37831078 907 gMC->Gsatt("TS10","SEEN",0);
908 gMC->Gsatt("TS11","SEEN",0);
909 gMC->Gsatt("TS12","SEEN",0);
37831078 910 gMC->Gsatt("TS13","SEEN",0);
911 gMC->Gsatt("TS14","SEEN",0);
79575d04 912 gMC->Gsatt("TICC","SEEN",0);
913 gMC->Gsatt("TICM","SEEN",0);
37831078 914 gMC->Gsatt("TS15","SEEN",0);
915 gMC->Gsatt("TS16","SEEN",0);
37831078 916 gMC->Gsatt("TS17","SEEN",0);
79575d04 917 gMC->Gsatt("TS18","SEEN",0);
918 gMC->Gsatt("TS19","SEEN",0);
919 gMC->Gsatt("TPJ1","SEEN",0);
920 gMC->Gsatt("TPJ2","SEEN",0);
921 gMC->Gsatt("TICS","SEEN",0);
922 gMC->Gsatt("TDGN","SEEN",0);
37831078 923 gMC->Gsatt("TIRC","SEEN",0);
924 gMC->Gsatt("TIC1","SEEN",1);
925 gMC->Gsatt("TIPP","SEEN",0);
926 gMC->Gsatt("TIC3","SEEN",0);
927 gMC->Gsatt("TRCE","SEEN",0);
928 gMC->Gsatt("TPSC","SEEN",0);
79575d04 929 gMC->Gsatt("TPCC","SEEN",0);
37831078 930 gMC->Gsatt("TORC","SEEN",0);
931 gMC->Gsatt("TOPP","SEEN",0);
932 gMC->Gsatt("TOC3","SEEN",0);
933 gMC->Gsatt("TOC1","SEEN",1);
934 gMC->Gsatt("TSSW","SEEN",1);
935 gMC->Gsatt("TSWC","SEEN",1);
37831078 936 gMC->Gsatt("TSSW","COLO",3);
937 gMC->Gsatt("TSWC","COLO",3);
938 gMC->Gsatt("TSCE","COLO",6);
79575d04 939 gMC->Gsatt("TSCE","SEEN",1);
37831078 940 gMC->Gsatt("TWES","SEEN",0);
941 gMC->Gsatt("TSWB","SEEN",0);
942 gMC->Gsatt("TPEL","SEEN",0);
943 gMC->Gsatt("TPMW","SEEN",1);
37831078 944 gMC->Gsatt("TESR","SEEN",1);
945 gMC->Gsatt("TPMW","COLO",12);
37831078 946 gMC->Gsatt("TIC1","COLO",5);
79575d04 947 gMC->Gsatt("TOC1","COLO",5);
37831078 948 gMC->Gsatt("TESB","SEEN",0);
37831078 949 gMC->Gsatt("THVM","SEEN",1);
950 gMC->Gsatt("THVM","COLO",11);
79575d04 951 gMC->Gsatt("THVH","SEEN",0);
952 gMC->Gsatt("TPSR","SEEN",0);
37831078 953 gMC->Gsatt("THVL","SEEN",0);
79575d04 954 gMC->Gsatt("THVC","SEEN",0);
37831078 955 gMC->Gsatt("THVE","SEEN",0);
956 gMC->Gsatt("THVR","SEEN",0);
79575d04 957 gMC->Gsatt("TPSS","SEEN",0);
958 gMC->Gsatt("TPUS","SEEN",0);
959 gMC->Gsatt("TPLS","SEEN",0);
37831078 960
fe4da5cc 961 //
cfce8870 962 gMC->Gdopt("hide", "on");
963 gMC->Gdopt("shad", "on");
964 gMC->Gsatt("*", "fill", 7);
965 gMC->SetClipBox(".");
37831078 966 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
967 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
968 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
969 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
970 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
cfce8870 971 gMC->DefaultRange();
972 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
973 gMC->Gdhead(1111, "Time Projection Chamber");
974 gMC->Gdman(18, 4, "MAN");
975 gMC->Gdopt("hide","off");
fe4da5cc 976}
977
978//_____________________________________________________________________________
979void AliTPCv2::CreateMaterials()
980{
981 //
982 // Define materials for version 2 of the Time Projection Chamber
983 //
37831078 984
fe4da5cc 985 AliTPC::CreateMaterials();
986}
987
988//_____________________________________________________________________________
989void AliTPCv2::Init()
990{
991 //
992 // Initialises version 2 of the TPC after that it has been built
993 //
37831078 994
995 Int_t *idtmed = fIdtmed->GetArray();
996
fe4da5cc 997 AliTPC::Init();
d4c354b9 998
c1637e41 999
1000 fIdSens=gMC->VolId("TPC_Strip"); // one strip is always selected...
d4c354b9 1001
c1637e41 1002 fIDrift=gMC->VolId("TPC_Drift");
1003 fSecOld=-100; // fake number
fe4da5cc 1004
cfce8870 1005 gMC->SetMaxNStep(30000); // max. number of steps increased
fe4da5cc 1006
37831078 1007 gMC->Gstpar(idtmed[2],"LOSS",5); // specific energy loss
fe4da5cc 1008
f77f13c8 1009 AliInfo("*** TPC version 2 initialized ***");
1010 AliInfo(Form("Maximum number of steps = %d",gMC->GetMaxNStep()));
fe4da5cc 1011
1012 //
1013
1014}
1015
1016//_____________________________________________________________________________
1017void AliTPCv2::StepManager()
1018{
1019 //
1020 // Called for every step in the Time Projection Chamber
1021 //
1022
1023 //
1024 // parameters used for the energy loss calculations
1025 //
73042f01 1026 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1027 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1028 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
fe4da5cc 1029
1030
73042f01 1031 const Float_t kbig = 1.e10;
fe4da5cc 1032
1033 Int_t id,copy;
e61fd20d 1034 Float_t hits[5];
fe4da5cc 1035 Int_t vol[2];
37831078 1036 TLorentzVector p;
fe4da5cc 1037
37831078 1038 vol[1]=0; // preset row number to 0
fe4da5cc 1039 //
73042f01 1040 gMC->SetMaxStep(kbig);
fe4da5cc 1041
0a6d8768 1042 if(!gMC->IsTrackAlive()) return; // particle has disappeared
fe4da5cc 1043
cfce8870 1044 Float_t charge = gMC->TrackCharge();
fe4da5cc 1045
1046 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1047
37831078 1048 // check the sensitive volume
1049
c1637e41 1050 id = gMC->CurrentVolID(copy); // vol ID and copy number (starts from 1!)
1051 if(id != fIDrift && id != fIdSens) return; // not in the sensitive folume
da33556f 1052
c1637e41 1053 gMC->TrackPosition(p);
1054 Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1055 //
1056
1057 //
1058 Double_t angle = TMath::ACos(p[0]/r);
1059 angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle;
1060 //
1061 // angular segment, it is not a real sector number...
1062 //
1063 Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/
1064 fTPCParam->GetInnerAngle());
1065 // rotate to segment "0"
1066 Float_t cos,sin;
1067 fTPCParam->AdjustCosSin(sector,cos,sin);
1068 Float_t x1=p[0]*cos + p[1]*sin;
1069 // check if within sector's limits
1070 if(x1>=fTPCParam->GetInnerRadiusLow()&&x1<=fTPCParam->GetInnerRadiusUp()
1071 ||x1>=fTPCParam->GetOuterRadiusLow()&&x1<=fTPCParam->GetOuterRadiusUp()){
1072 // calculate real sector number...
1073 if (x1>fTPCParam->GetOuterRadiusLow()){
1074 sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/
1075 fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector();
1076 if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1);
37831078 1077 }
c1637e41 1078 else
1079 if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1);
1080 //
1081 // here I have a sector number
1082 //
37831078 1083
c1637e41 1084 vol[0]=sector;
1085 // check if change of sector
1086 if(sector != fSecOld){
1087 fSecOld=sector;
1088 // add track reference
1089 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
1090 }
1091 // track is in the sensitive strip
1092 if(id == fIdSens){
1093 // track is entering the strip
1094 if (gMC->IsTrackEntering()){
1095 Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp();
1096 vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows;
1097 // row numbers are autonomous for lower and upper sectors
1098 if(vol[0] > fTPCParam->GetNInnerSector()) {
1099 vol[1] -= fTPCParam->GetNRowLow();
1100 }
1101 //
1102 if(vol[0]<fTPCParam->GetNInnerSector()&&vol[1] == 0){
37831078 1103
c1637e41 1104 // lower sector, row 0, because Jouri wants to have this
6a905708 1105
c1637e41 1106 gMC->TrackMomentum(p);
1107 hits[0]=p[0];
1108 hits[1]=p[1];
1109 hits[2]=p[2];
1110 hits[3]=0.; // this hit has no energy loss
1111 // Get also the track time for pileup simulation
1112 hits[4]=gMC->TrackTime();
e61fd20d 1113
c1637e41 1114 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1115 }
1116 //
e61fd20d 1117
c1637e41 1118 gMC->TrackPosition(p);
1119 hits[0]=p[0];
1120 hits[1]=p[1];
1121 hits[2]=p[2];
1122 hits[3]=0.; // this hit has no energy loss
1123 // Get also the track time for pileup simulation
1124 hits[4]=gMC->TrackTime();
930ee558 1125
c1637e41 1126 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
37831078 1127
c1637e41 1128 }
1129 else return;
1130 }
37831078 1131 //-----------------------------------------------------------------
c1637e41 1132 // charged particle is in the sensitive drift volume
37831078 1133 //-----------------------------------------------------------------
cfce8870 1134 if(gMC->TrackStep() > 0) {
c1637e41 1135
73042f01 1136 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
fe4da5cc 1137 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
c1637e41 1138 //
37831078 1139 gMC->TrackPosition(p);
1140 hits[0]=p[0];
1141 hits[1]=p[1];
1142 hits[2]=p[2];
fe4da5cc 1143 hits[3]=(Float_t)nel;
c1637e41 1144
fe4da5cc 1145 // Add this hit
c1637e41 1146
6a905708 1147 if (fHitType&&2){
1148 gMC->TrackMomentum(p);
1149 Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1150 Float_t precision = (momentum>0.1) ? 0.002 :0.01;
1151 fTrackHits->SetHitPrecision(precision);
1152 }
e61fd20d 1153
1154 // Get also the track time for pileup simulation
1155 hits[4]=gMC->TrackTime();
c1637e41 1156
1157 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
e61fd20d 1158
c1637e41 1159 } // step>0
1160 } //within sector's limits
fe4da5cc 1161 // Stemax calculation for the next step
1162
1163 Float_t pp;
0a6d8768 1164 TLorentzVector mom;
1165 gMC->TrackMomentum(mom);
1166 Float_t ptot=mom.Rho();
73042f01 1167 Float_t betaGamma = ptot/gMC->TrackMass();
fe4da5cc 1168
69e40cce 1169 Int_t pid=gMC->TrackPid();
cc80f89e 1170 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
fe4da5cc 1171 {
73042f01 1172 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
fe4da5cc 1173 }
1174 else
1175 {
595bf2c3 1176
07521998 1177 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg
595bf2c3 1178 pp=kprim*BetheBloch(betaGamma);
1179
fe4da5cc 1180 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1181 }
1182
b9d0a01d 1183 Double_t rnd = gMC->GetRandom()->Rndm();
fe4da5cc 1184
cfce8870 1185 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
fe4da5cc 1186
c1637e41 1187
fe4da5cc 1188}
1189
1190//_____________________________________________________________________________
1191Float_t AliTPCv2::BetheBloch(Float_t bg)
1192{
1193 //
1194 // Bethe-Bloch energy loss formula
1195 //
73042f01 1196 const Double_t kp1=0.76176e-1;
1197 const Double_t kp2=10.632;
1198 const Double_t kp3=0.13279e-4;
1199 const Double_t kp4=1.8631;
1200 const Double_t kp5=1.9479;
fe4da5cc 1201
1202 Double_t dbg = (Double_t) bg;
1203
1204 Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
1205
73042f01 1206 Double_t aa = TMath::Power(beta,kp4);
1207 Double_t bb = TMath::Power(1./dbg,kp5);
fe4da5cc 1208
73042f01 1209 bb=TMath::Log(kp3+bb);
fe4da5cc 1210
73042f01 1211 return ((Float_t)((kp2-aa-bb)*kp1/aa));
fe4da5cc 1212}
73042f01 1213
1214