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Adding new class for Gain calibration (Marian, Stefan Gaertner)
[u/mrichter/AliRoot.git] / TPC / AliTPCv4.cxx
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457e2170 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
16/*
17$Log$
e6add757 18Revision 1.1 2007/06/24 20:56:19 hristov
19TPC version for the krypton runs (Marek)
20
457e2170 21*/
22
23//
24///////////////////////////////////////////////////////////////////////////////
25// //
26// Time Projection Chamber version 4 -- detailed TPC and slow simulation //
27// of Krypton decays //
28// //
29//Begin_Html //
30/*
31<img src="picts/AliTPCv2Class.gif">
32*/
33//End_Html
34// //
35// //
36///////////////////////////////////////////////////////////////////////////////
37
38//#include <stdlib.h>
39
40#include <TLorentzVector.h>
41#include <TPDGCode.h>
42#include <TString.h>
43#include "AliLog.h"
e6add757 44#include "AliTrackReference.h"
457e2170 45#include "AliTPCParam.h"
46#include "AliTPCTrackHitsV2.h"
47#include "AliTPCv4.h"
48#include "TGeoVolume.h"
49#include "TGeoPcon.h"
50#include "TGeoTube.h"
51#include "TGeoPgon.h"
52#include "TGeoTrd1.h"
53#include "TGeoCompositeShape.h"
54#include "TGeoPara.h"
55#include "TGeoPhysicalNode.h"
56
57ClassImp(AliTPCv4)
58
59//_____________________________________________________________________________
60AliTPCv4::AliTPCv4(const char *name, const char *title) :
61 AliTPC(name, title),
62 fIdSens(0),
63 fIDrift(0),
64 fSecOld(0)
65{
66 //
67 // Standard constructor for Time Projection Chamber version 2
68 //
69
70
71 SetBufferSize(128000);
72
73
74 if (fTPCParam)
75 fTPCParam->Write(fTPCParam->GetTitle());
76}
77
78//_____________________________________________________________________________
79void AliTPCv4::CreateGeometry()
80{
81 //
82 // Create the geometry of Time Projection Chamber version 2
83 //
84 //Begin_Html
85 /*
86 <img src="picts/AliTPC.gif">
87 */
88 //End_Html
89 //Begin_Html
90 /*
91 <img src="picts/AliTPCv2Tree.gif">
92 */
93 //End_Html
94
95 //----------------------------------------------------------
96 // This geometry is written using TGeo class
97 // Firstly the shapes are defined, and only then the volumes
98 // What is recognized by the MC are volumes
99 //----------------------------------------------------------
100 //
101 // tpc - this will be the mother volume
102 //
103
104 //
105 // here I define a volume TPC
106 // retrive the medium name with "TPC_" as a leading string
107 //
108 TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections
109 tpc->DefineSection(0,-290.,77.,278.);
110 tpc->DefineSection(1,-259.6,70.,278.);
111 //
112 tpc->DefineSection(2,-259.6,68.1,278.);
113 tpc->DefineSection(3,-253.6,68.1,278.);
114 //
115 tpc->DefineSection(4,-253.6,68.,278.);
116 tpc->DefineSection(5,-74.0,60.8,278.);
117 //
118 tpc->DefineSection(6,-74.0,60.1,278.);
119 tpc->DefineSection(7,-73.3,60.1,278.);
120 //
121 tpc->DefineSection(8,-73.3,56.9,278.);
122 tpc->DefineSection(9,73.3,56.9,278.);
123 //
124 tpc->DefineSection(10,73.3,60.1,278.);
125 tpc->DefineSection(11,74.0,60.1,278.);
126 //
127 tpc->DefineSection(12,74.0,60.8,278.);
128 tpc->DefineSection(13,253.6,65.5,278.);
129 //
130 tpc->DefineSection(14,253.6,65.6,278.);
131 tpc->DefineSection(15,259.6,65.6,278.);
132 //
133 tpc->DefineSection(16,259.6,70.0,278.);
134 tpc->DefineSection(17,290.,77.,278.);
135 //
136 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
137 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
138 //
139 // drift volume - sensitive volume, extended beyond the
140 // endcaps, because of the alignment
141 //
142 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
143 dvol->DefineSection(0,-260.,74.5,264.4);
144 dvol->DefineSection(1,-253.6,74.5,264.4);
145 //
146 dvol->DefineSection(2,-253.6,76.6774,258.);
147 dvol->DefineSection(3,253.6,76.6774,258.);
148 //
149 dvol->DefineSection(4,253.6,74.5,264.4);
150 dvol->DefineSection(5,260.,74.5,264.4);
151 //
152 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-3");
153 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
154 //
155 v1->AddNode(v9,1);
156 //
157 // outer insulator
158 //
159 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
160 //
161 tpco->DefineSection(0,-256.6,264.8,278.);
162 tpco->DefineSection(1,-253.6,264.8,278.);
163 //
164 tpco->DefineSection(2,-253.6,258.,278.);
165 tpco->DefineSection(3,250.6,258.,278.);
166 //
167 tpco->DefineSection(4,250.6,258.,275.5);
168 tpco->DefineSection(5,253.6,258.,275.5);
169 //
170 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
171 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
172 //
173 // outer containment vessel
174 //
175 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
176 //
177 tocv->DefineSection(0,-256.6,264.8,278.);
178 tocv->DefineSection(1,-253.6,264.8,278.);
179 //
180 tocv->DefineSection(2,-253.6,274.8124,278.);
181 tocv->DefineSection(3,247.6,274.8124,278.);
182 //
183 tocv->DefineSection(4,247.6,270.4,278.);
184 tocv->DefineSection(5,250.6,270.4,278.);
185 //
186 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
187 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
188 //
189 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
190 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
191 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
192 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
193 //
194 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
195 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
196 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
197 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
198 //
199 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
200 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
201 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
202 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
203 //-------------------------------------------------------
204 // Tpc Outer Field Cage
205 // daughters - composite (sandwich)
206 //-------------------------------------------------------
207
208 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
209 //
210 tofc->DefineSection(0,-253.6,258.,269.6);
211 tofc->DefineSection(1,-250.6,258.,269.6);
212 //
213 tofc->DefineSection(2,-250.6,258.,260.0676);
214 tofc->DefineSection(3,250.6,258.,260.0676);
215 //
216 tofc->DefineSection(4,250.6,258.,275.5);
217 tofc->DefineSection(5,253.6,258.,275.5);
218 //
219 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
220 //sandwich
221 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
222 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
223 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
224 //
225 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
226 //
227 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
228 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
229 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
230 //
231 // outer part - positioning
232 //
233 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
234 //
235 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
236 //
237 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
238 //
239 v2->AddNode(v3,1); v2->AddNode(v4,1);
240 //
241 v1->AddNode(v2,1);
242 //--------------------------------------------------------------------
243 // Tpc Inner INsulator (CO2)
244 // the cones, the central drum and the inner f.c. sandwich with a piece
245 // of the flane will be placed in the TPC
246 //--------------------------------------------------------------------
247 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
248 //
249 tpci->DefineSection(0,-253.6,68.4,76.6774);
250 tpci->DefineSection(1,-74.0,61.2,76.6774);
251 //
252 tpci->DefineSection(2,74.0,61.2,76.6774);
253 //
254 tpci->DefineSection(3,253.6,65.9,76.6774);
255 //
256 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
257 //
258 // now the inner field cage - only part of flanges (2 copies)
259 //
260 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
261 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
262 //
263 //---------------------------------------------------------
264 // Tpc Inner Containment vessel - Muon side
265 //---------------------------------------------------------
266 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
267 //
268 tcms->DefineSection(0,-259.1,68.1,74.2);
269 tcms->DefineSection(1,-253.6,68.1,74.2);
270 //
271 tcms->DefineSection(2,-253.6,68.1,68.4);
272 tcms->DefineSection(3,-74.0,60.9,61.2);
273 //
274 tcms->DefineSection(4,-74.0,60.1,61.2);
275 tcms->DefineSection(5,-73.3,60.1,61.2);
276 //
277 tcms->DefineSection(6,-73.3,56.9,61.2);
278 tcms->DefineSection(7,-73.0,56.9,61.2);
279 //
280 tcms->DefineSection(8,-73.0,56.9,58.8);
281 tcms->DefineSection(9,-71.3,56.9,58.8);
282 //
283 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
284 //-----------------------------------------------
285 // inner containment vessel - shaft side
286 //-----------------------------------------------
287 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
288 //
289 tcss->DefineSection(0,71.3,56.9,58.8);
290 tcss->DefineSection(1,73.0,56.9,58.8);
291 //
292 tcss->DefineSection(2,73.0,56.9,61.2);
293 tcss->DefineSection(3,73.3,56.9,61.2);
294 //
295 tcss->DefineSection(4,73.3,60.1,61.2);
296 tcss->DefineSection(5,74.0,60.1,61.2);
297 //
298 tcss->DefineSection(6,74.0,60.9,61.2);
299 tcss->DefineSection(7,253.6,65.6,65.9);
300 //
301 tcss->DefineSection(8,253.6,65.6,74.2);
302 tcss->DefineSection(9,258.1,65.6,74.2);
303 //
304 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
305 //-----------------------------------------------
306 // Inner field cage
307 // define 4 parts and make an assembly
308 //-----------------------------------------------
309 // part1 - Al - 2 copies
310 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
311 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
312 // sandwich - outermost parts - 2 copies
313 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
314 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
315 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
316 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
317 //
318 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
319 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
320 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
321 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
322 //
323 // middle parts - 2 copies
324 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
325 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
326 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
327 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
328 //
329 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
330 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
331 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
332 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
333 // central part - 1 copy
334 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
335 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
336 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
337 //
338 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
339 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
340 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
341 //
342 // inner part - positioning
343 //
344 // creating a sandwich
345 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
346 //
347 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
348 //
349 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
350 //
351 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
352 //
353 tv100->AddNode(tv10,1);
354 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
355 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
356 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
357 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
358 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
359 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
360 //
361 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
362 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
363 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
364 v9->AddNode(tv100,1);
365 //
366 // central drum
367 //
368 // flange + sandwich
369 //
370 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
371 cfl->DefineSection(0,-71.1,59.7,61.2);
372 cfl->DefineSection(1,-68.6,59.7,61.2);
373 //
374 cfl->DefineSection(2,-68.6,60.6324,61.2);
375 cfl->DefineSection(3,68.6,60.6324,61.2);
376 //
377 cfl->DefineSection(4,68.6,59.7,61.2);
378 cfl->DefineSection(5,71.1,59.7,61.2);
379 //
380 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
381 // sandwich
382 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
383 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
384 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
385 //
386 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
387 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
388 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
389 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
390 //
391 // seals for central drum 2 copies
392 //
393 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
394 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
395 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
396 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.));
397 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.));
398 //
399 // seal collars
400 TGeoPcon *se = new TGeoPcon(0.,360.,6);
401 se->DefineSection(0,-72.8,59.7,61.2);
402 se->DefineSection(1,-72.3,59.7,61.2);
403 //
404 se->DefineSection(2,-72.3,58.85,61.2);
405 se->DefineSection(3,-71.6,58.85,61.2);
406 //
407 se->DefineSection(4,-71.6,59.7,61.2);
408 se->DefineSection(5,-71.3,59.7,61.2);
409 //
410 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
411 //
412 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
413 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
414 //
415 // define reflection matrix
416 //
417 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
418 //
419 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
420 //
421 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
422 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
423 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
424 //
425 // central membrane - 2 rings and a mylar membrane - assembly
426 //
427 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
428 TGeoTube *oh = new TGeoTube(250.,256.,.5);
429 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
430 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
431 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
432 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
433 //
434 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
435 cm->AddNode(ihv,1);
436 cm->AddNode(ohv,1);
437 cm->AddNode(memv,1);
438 v9->AddNode(cm,1);
439 //
440 // end caps - they are make as an assembly of single segments
441 // containing both readout chambers
442 //
443 Double_t openingAngle = 10.*TMath::DegToRad();
444 Double_t thick=1.5; // rib
445 Double_t shift = thick/TMath::Sin(openingAngle);
446 //
447 Double_t lowEdge = 86.3; // hole in the wheel
448 Double_t upEdge = 240.4; // hole in the wheel
449 //
450 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
451 //
452 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
453 //
454 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
455 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
456 //
457 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
458 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
459 //
460 Double_t ys = shift*TMath::Sin(openingAngle);
461 Double_t xs = shift*TMath::Cos(openingAngle);
462 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
463 tr->RegisterYourself();
464 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
465 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
466 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
467 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
468 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
469 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
470 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
471 //
472 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
473 //
474 // readout chambers
475 //
476 // IROC first
477 //
478 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
479 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
480 // empty space
481 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
482 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
483 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
484 //bars
485 Double_t tga = (19.8328-12.3742)/39.3;
486 Double_t xmin,xmax;
487 xmin = 9.55*tga+12.3742;
488 xmax = 9.95*tga+12.3742;
489 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
490 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
491 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
492 xmin=19.4*tga+12.3742;
493 xmax=19.9*tga+12.3742;
494 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
495 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
496 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
497 xmin=29.35*tga+12.3742;
498 xmax=29.75*tga+12.3742;
499 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
500 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
501 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
502 //
503 // holes for connectors
504 //
505 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
506 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
507 TString fileName(gSystem->Getenv("ALICE_ROOT"));
508 fileName += "/TPC/conn_iroc.dat";
509 ifstream in;
510 in.open(fileName.Data(), ios_base::in); // asci file
511 for(Int_t i =0;i<86;i++){
512 Double_t y = 3.99;
513 Double_t x,z,ang;
514 in>>x>>z>>ang;
515 z-=26.5;
516 TGeoRotation *rrr = new TGeoRotation();
517 rrr->RotateY(ang);
518 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
519 ibdv->AddNode(connv,i+1,trans);
520 }
521 in.close();
522 // "cap"
523 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
524 // "hole"
525 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
526 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
527 tr1->RegisterYourself();
528 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
529 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
530 //
531 // pad plane and wire fixations
532 //
533 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
534 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
535 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
536 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
537 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
538 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
539 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
540 //
541 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
542 //
543 iroc->AddNode(ibdv,1);
544 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
545 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
546 tga =(23.3521-14.5974)/49.65;
547 Double_t xx = 24.825*tga+14.5974-0.6;
548 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
549 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
550 //
551 // OROC
552 //
553 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
554 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
555 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
556 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
557 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
558 //horizontal bars
559 tga=(38.5084-20.2938)/99.3;
560 xmin=tga*10.2+20.2938;
561 xmax=tga*10.6+20.2938;
562 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
563 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
564 //
565 xmin=22.55*tga+20.2938;
566 xmax=24.15*tga+20.2938;
567 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
568 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
569 //
570 xmin=36.1*tga+20.2938;
571 xmax=36.5*tga+20.2938;
572 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
573 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
574 //
575 xmin=49.0*tga+20.2938;
576 xmax=50.6*tga+20.2938;
577 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
578 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
579 //
580 xmin=63.6*tga+20.2938;
581 xmax=64.0*tga+20.2938;
582 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
583 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
584 //
585 xmin=75.5*tga+20.2938;
586 xmax=77.15*tga+20.2938;
587 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
588 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
589 //
590 xmin=88.7*tga+20.2938;
591 xmax=89.1*tga+20.2938;
592 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
593 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
594 //
595 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
596 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
597 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
598 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
599 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
600 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
601 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
602 // vertical bars
603 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
604 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
605 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
606 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
607 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
608 //
609 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
610 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
611 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
612 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
613 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
614 //
615 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
616 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
617 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
618 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
619 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
620 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
621 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
622 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
623 //
624 // holes for connectors
625 //
626 fileName = gSystem->Getenv("ALICE_ROOT");
627 fileName += "/TPC/conn_oroc.dat";
628 in.open(fileName.Data(), ios_base::in); // asci file
629 for(Int_t i =0;i<78;i++){
630 Double_t y =3.89;
631 Double_t x,z,ang;
632 Double_t x1,z1,x2,z2;
633 in>>x>>z>>ang;
634 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
635 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
636 //
637 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
638 //
639 TGeoRotation *rr = new TGeoRotation();
640 rr->RotateY(ang);
641 z1-=54.95;
642 z2-=54.95;
643 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
644 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
645 obdv->AddNode(connv,i+1,trans1);
646 obdv->AddNode(connv,i+79,trans2);
647 }
648 in.close();
649 // cap
650 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
651 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
652 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
653 tr5->RegisterYourself();
654 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
655 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
656 //
657 // pad plane and wire fixations
658 //
659 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
660 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
661 //
662 tga=(43.5239-23.3874)/114.2;
663 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
664 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
665 xx = 57.1*tga+23.3874-0.7;
666 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
667 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
668 //
669 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
670 //
671 oroc->AddNode(obdv,1);
672 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
673 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
674 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
675 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
676 //
677 // now iroc and oroc are placed into a sector...
678 //
679 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
680 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
681 TGeoRotation rot1("rot1",90.,90.,0.);
682 TGeoRotation rot2("rot2");
683 rot2.RotateY(10.);
684 TGeoRotation *rot = new TGeoRotation("rot");
685 *rot=rot1*rot2;
686 //
687 Double_t x0,y0;
688 x0=110.2*TMath::Cos(openingAngle);
689 y0=110.2*TMath::Sin(openingAngle);
690 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //a-side
691 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //c-side
692 x0=188.45*TMath::Cos(openingAngle);
693 y0=188.45*TMath::Sin(openingAngle);
694 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //a-side
695 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //c-side
696 //
697 //
698 // A-side
699 //
700 secta->AddNode(ch,1);
701 secta->AddNode(iroc,1,combi1a);
702 secta->AddNode(oroc,1,combi2a);
703 //
704 // C-side
705 //
706 sectc->AddNode(ch,1);
707 sectc->AddNode(iroc,1,combi1c);
708 sectc->AddNode(oroc,1,combi2c);
709 //
710 // now I try to make wheels...
711 //
712 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
713 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
714 //
715 for(Int_t i =0;i<18;i++){
716 Double_t phi = (20.*i);
717 TGeoRotation *r = new TGeoRotation();
718 r->RotateZ(phi);
719 wheela->AddNode(secta,i+1,r);
720 wheelc->AddNode(sectc,i+1,r);
721
722 }
723 // wheels in the drift volume!
724
725 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
726 v9->AddNode(wheela,1,combi3);
727 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
728 //_____________________________________________________________
729 // service support wheel
730 //_____________________________________________________________
731 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
732 sw->DefineSection(0,-4.,80.5,251.75);
733 sw->DefineSection(1,4.,80.5,251.75);
734 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
735 //
736 thick=1.;
737 shift = thick/TMath::Sin(openingAngle);
738 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
739 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
740 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
741 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
742 //
743 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
744 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
745 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
746 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
747 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
748 //
749 shv->AddNode(elv,1);
750 //
751 //
752 ys = shift*TMath::Sin(openingAngle);
753 xs = shift*TMath::Cos(openingAngle);
754 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
755 // cover
756 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
757 co->DefineSection(0,-0.5,77.,255.25);
758 co->DefineSection(1,0.5,77.,255.25);
759 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
760 // hole in a cover
761 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
762 shift=4./TMath::Sin(openingAngle);
763 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
764 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
765 //
766 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
767 //
768 ys = shift*TMath::Sin(openingAngle);
769 xs = shift*TMath::Cos(openingAngle);
770 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
771 //
772 // Sector as an Assembly
773 //
774 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
775 swhs->AddNode(swv,1);
776 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
777 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
778 //
779 // SSW as an Assembly of sectors
780 //
781 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
782 for(Int_t i =0;i<18;i++){
783 Double_t phi = (20.*i);
784 TGeoRotation *r = new TGeoRotation();
785 r->RotateZ(phi);
786 swheel->AddNode(swhs,i+1,r);
787 }
788 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
789 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
790
791 // sensitive strips - strip "0" is always set
792 // conditional
793 Int_t totrows;
794 totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp();
795 Double_t *upar;
796 upar=NULL;
797 gGeoManager->Volume("TPC_Strip","PGON",m5->GetId(),upar);
798 upar=new Double_t [10];
799 upar[0]=0.;
800 upar[1]=360.;
801 upar[2]=18.;
802 upar[3]=2.;
803 //
804 upar[4]=-124.8;
805 upar[7]=124.8;
806
807 Double_t rlow=fTPCParam->GetPadRowRadiiLow(0);
808
809 upar[5]=rlow;
810 upar[6]=rlow+.01;
811 upar[8]=upar[5];
812 upar[9]=upar[6];
813 //
814 gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
815 gGeoManager->Node("TPC_Strip",totrows+1,
816 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
817 //
818 // now, strips optionally
819 //
820 if(fSens){
821 //lower sectors
822 for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){
823 rlow=fTPCParam->GetPadRowRadiiLow(i-1);
824 upar[5]=rlow;
825 upar[6]=rlow+.01;
826 upar[8]=upar[5];
827 upar[9]=upar[6];
828 gGeoManager->Node("TPC_Strip",i,
829 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
830 gGeoManager->Node("TPC_Strip",totrows+i,
831 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
832 }
833 //upper sectors
834 for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){
835 rlow=fTPCParam->GetPadRowRadiiUp(i-1);
836 upar[5]=rlow;
837 upar[6]=rlow+.01;
838 upar[8]=upar[5];
839 upar[9]=upar[6];
840 gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(),
841 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
842 gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(),
843 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
844 }
845 }//strips
846 //----------------------------------------------------------
847 // TPc Support Rods - MAKROLON
848 //----------------------------------------------------------
849 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
850 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
851 // upper and lower rods differ in length!
852 delete [] upar;
853 upar=NULL;
854 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
855 upar=new Double_t [3];
856 upar[0]=1.8;
857 upar[1]=2.2;
858
859 //
860 //HV rods - makrolon + 0.58cm (diameter) Cu
861 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
862 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
863 //
864 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
865 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
866 hvrv->AddNode(hvcv,1);
867
868 for(Int_t i=0;i<18;i++){
869 Double_t angle,x,y;
870 Double_t z,r;
871 angle=TMath::DegToRad()*20.*(Double_t)i;
872 r=81.5;
873 x=r * TMath::Cos(angle);
874 y=r * TMath::Sin(angle);
875 upar[2]=126.64; //lower
876 z= 126.96;
877 if(i==15){
878 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));
879 v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z));
880 }
881 else{
882 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
883 gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
884 }
885 r=254.25;
886 x=r * TMath::Cos(angle);
887 y=r * TMath::Sin(angle);
888 upar[2]=126.54; //upper
889 z=127.06;
890 gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
891 gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
892 }
893
894 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
895 alice->AddNode(v1,1);
896
897} // end of function
898
899//_____________________________________________________________________________
900void AliTPCv4::AddAlignableVolumes() const
901{
902 //
903 // Create entries for alignable volumes associating the symbolic volume
904 // name with the corresponding volume path. Needs to be syncronized with
905 // eventual changes in the geometry.
906 //
907 SetInnerChambersAlignable();
908 SetOuterChambersAlignable();
909}
910
911//_____________________________________________________________________________
912void AliTPCv4::SetInnerChambersAlignable() const
913{
914 //
915 Int_t modnum = 0;
916 TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_";
917 TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_";
918 TString vpappend = "/TPC_IROC_1";
919 TString snstr1="TPC/EndcapA/Sector";
920 TString snstr2="TPC/EndcapC/Sector";
921 TString snappend="/InnerChamber";
922 TString volpath, symname;
923
924 for(Int_t cnt=1; cnt<=18; cnt++){
925 volpath = vpstr1;
926 volpath += cnt;
927 volpath += vpappend;
928 symname = snstr1;
929 symname += cnt;
930 symname += snappend;
931 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data()))
932 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
933 //
934 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data());
935 const char *path = alignableEntry->GetTitle();
936 if (!gGeoManager->cd(path))
937 AliFatal(Form("Volume path %s not valid!",path));
938 TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix();
939 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,cnt-1);
940 alignableEntry->SetMatrix(matTtoL);
941 modnum++;
942 }
943
944 for(Int_t cnt=1; cnt<=18; cnt++){
945 volpath = vpstr2;
946 volpath += cnt;
947 volpath += vpappend;
948 symname = snstr2;
949 symname += cnt;
950 symname += snappend;
951 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data()))
952 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
953 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data());
954 const char *path = alignableEntry->GetTitle();
955 if (!gGeoManager->cd(path))
956 AliFatal(Form("Volume path %s not valid!",path));
957 TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix();
958 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,18+cnt-1);
959 alignableEntry->SetMatrix(matTtoL);
960 modnum++;
961 }
962}
963
964//_____________________________________________________________________________
965void AliTPCv4::SetOuterChambersAlignable() const
966{
967 //
968 Int_t modnum = 0;
969 TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_";
970 TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_";
971 TString vpappend = "/TPC_OROC_1";
972 TString snstr1="TPC/EndcapA/Sector";
973 TString snstr2="TPC/EndcapC/Sector";
974 TString snappend="/OuterChamber";
975 TString volpath, symname;
976
977 for(Int_t cnt=1; cnt<=18; cnt++){
978 volpath = vpstr1;
979 volpath += cnt;
980 volpath += vpappend;
981 symname = snstr1;
982 symname += cnt;
983 symname += snappend;
984 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data()))
985 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
986 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data());
987 const char *path = alignableEntry->GetTitle();
988 if (!gGeoManager->cd(path))
989 AliFatal(Form("Volume path %s not valid!",path));
990 TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix();
991 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+cnt-1);
992 alignableEntry->SetMatrix(matTtoL);
993 modnum++;
994 }
995
996 for(Int_t cnt=1; cnt<=18; cnt++){
997 volpath = vpstr2;
998 volpath += cnt;
999 volpath += vpappend;
1000 symname = snstr2;
1001 symname += cnt;
1002 symname += snappend;
1003 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data()))
1004 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
1005 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data());
1006 const char *path = alignableEntry->GetTitle();
1007 if (!gGeoManager->cd(path))
1008 AliFatal(Form("Volume path %s not valid!",path));
1009 TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix();
1010 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+18+cnt-1);
1011 alignableEntry->SetMatrix(matTtoL);
1012 modnum++;
1013 }
1014}
1015
1016//_____________________________________________________________________________
1017void AliTPCv4::DrawDetector() const
1018{
1019 //
1020 // Draw a shaded view of the Time Projection Chamber version 1
1021 //
1022
1023 // Set everything unseen
1024 gMC->Gsatt("*", "seen", -1);
1025 //
1026 // Set ALIC mother transparent
1027 gMC->Gsatt("ALIC","SEEN",0);
1028 //
1029 // Set the volumes visible
1030 //
1031
1032 gMC->Gsatt("TPC ","SEEN",0);
1033 gMC->Gsatt("TOIN","SEEN",1);
1034 gMC->Gsatt("TOIN","COLO",7);
1035 gMC->Gsatt("TOCV","SEEN",1);
1036 gMC->Gsatt("TOCV","COLO",4);
1037 gMC->Gsatt("TSA1","SEEN",0);
1038 gMC->Gsatt("TSA2","SEEN",0);
1039 gMC->Gsatt("TSA3","SEEN",0);
1040 gMC->Gsatt("TSA4","SEEN",0);
1041 gMC->Gsatt("TSA5","SEEN",0);
1042 gMC->Gsatt("TOFC","SEEN",1);
1043 gMC->Gsatt("TOFC","COLO",4);
1044 gMC->Gsatt("TSA6","SEEN",0);
1045 gMC->Gsatt("TSA7","SEEN",0);
1046 gMC->Gsatt("TSA8","SEEN",0);
1047 gMC->Gsatt("TIIN","SEEN",1);
1048 gMC->Gsatt("TIIN","COLO",7);
1049 gMC->Gsatt("TII1","SEEN",0);
1050 gMC->Gsatt("TIFC","SEEN",1);
1051 gMC->Gsatt("TIFC","COLO",4);
1052 gMC->Gsatt("TSA9","SEEN",0);
1053 gMC->Gsatt("TS10","SEEN",0);
1054 gMC->Gsatt("TS11","SEEN",0);
1055 gMC->Gsatt("TS12","SEEN",0);
1056 gMC->Gsatt("TS13","SEEN",0);
1057 gMC->Gsatt("TS14","SEEN",0);
1058 gMC->Gsatt("TICC","SEEN",0);
1059 gMC->Gsatt("TICM","SEEN",0);
1060 gMC->Gsatt("TS15","SEEN",0);
1061 gMC->Gsatt("TS16","SEEN",0);
1062 gMC->Gsatt("TS17","SEEN",0);
1063 gMC->Gsatt("TS18","SEEN",0);
1064 gMC->Gsatt("TS19","SEEN",0);
1065 gMC->Gsatt("TPJ1","SEEN",0);
1066 gMC->Gsatt("TPJ2","SEEN",0);
1067 gMC->Gsatt("TICS","SEEN",0);
1068 gMC->Gsatt("TDGN","SEEN",0);
1069 gMC->Gsatt("TIRC","SEEN",0);
1070 gMC->Gsatt("TIC1","SEEN",1);
1071 gMC->Gsatt("TIPP","SEEN",0);
1072 gMC->Gsatt("TIC3","SEEN",0);
1073 gMC->Gsatt("TRCE","SEEN",0);
1074 gMC->Gsatt("TPSC","SEEN",0);
1075 gMC->Gsatt("TPCC","SEEN",0);
1076 gMC->Gsatt("TORC","SEEN",0);
1077 gMC->Gsatt("TOPP","SEEN",0);
1078 gMC->Gsatt("TOC3","SEEN",0);
1079 gMC->Gsatt("TOC1","SEEN",1);
1080 gMC->Gsatt("TSSW","SEEN",1);
1081 gMC->Gsatt("TSWC","SEEN",1);
1082 gMC->Gsatt("TSSW","COLO",3);
1083 gMC->Gsatt("TSWC","COLO",3);
1084 gMC->Gsatt("TSCE","COLO",6);
1085 gMC->Gsatt("TSCE","SEEN",1);
1086 gMC->Gsatt("TWES","SEEN",0);
1087 gMC->Gsatt("TSWB","SEEN",0);
1088 gMC->Gsatt("TPEL","SEEN",0);
1089 gMC->Gsatt("TPMW","SEEN",1);
1090 gMC->Gsatt("TESR","SEEN",1);
1091 gMC->Gsatt("TPMW","COLO",12);
1092 gMC->Gsatt("TIC1","COLO",5);
1093 gMC->Gsatt("TOC1","COLO",5);
1094 gMC->Gsatt("TESB","SEEN",0);
1095 gMC->Gsatt("THVM","SEEN",1);
1096 gMC->Gsatt("THVM","COLO",11);
1097 gMC->Gsatt("THVH","SEEN",0);
1098 gMC->Gsatt("TPSR","SEEN",0);
1099 gMC->Gsatt("THVL","SEEN",0);
1100 gMC->Gsatt("THVC","SEEN",0);
1101 gMC->Gsatt("THVE","SEEN",0);
1102 gMC->Gsatt("THVR","SEEN",0);
1103 gMC->Gsatt("TPSS","SEEN",0);
1104 gMC->Gsatt("TPUS","SEEN",0);
1105 gMC->Gsatt("TPLS","SEEN",0);
1106
1107 //
1108 gMC->Gdopt("hide", "on");
1109 gMC->Gdopt("shad", "on");
1110 gMC->Gsatt("*", "fill", 7);
1111 gMC->SetClipBox(".");
1112 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1113 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1114 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1115 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1116 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1117 gMC->DefaultRange();
1118 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1119 gMC->Gdhead(1111, "Time Projection Chamber");
1120 gMC->Gdman(18, 4, "MAN");
1121 gMC->Gdopt("hide","off");
1122}
1123
1124//_____________________________________________________________________________
1125void AliTPCv4::CreateMaterials()
1126{
1127 //
1128 // Define materials for version 2 of the Time Projection Chamber
1129 //
1130
1131 AliTPC::CreateMaterials();
1132}
1133
1134//_____________________________________________________________________________
1135void AliTPCv4::Init()
1136{
1137 //
1138 // Initialises version 2 of the TPC after that it has been built
1139 //
1140
1141 Int_t *idtmed = fIdtmed->GetArray();
1142
1143 AliTPC::Init();
1144
1145
1146 fIdSens=gMC->VolId("TPC_Strip"); // one strip is always selected...
1147
1148 fIDrift=gMC->VolId("TPC_Drift");
1149 fSecOld=-100; // fake number
1150
1151 gMC->SetMaxNStep(30000); // max. number of steps increased
1152
1153 gMC->Gstpar(idtmed[20],"LOSS",5); // specific energy loss
1154
1155 AliInfo("*** TPC version 4 initialized ***");
1156 AliInfo(Form("Maximum number of steps = %d",gMC->GetMaxNStep()));
1157
1158 //
1159
1160}
1161
1162//_____________________________________________________________________________
1163void AliTPCv4::StepManager()
1164{
1165 //
1166 // Called for every step in the Time Projection Chamber
1167 //
1168
1169 //
1170 // parameters used for the energy loss calculations
1171 //
1172 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1173 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1174 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
1175
1176
1177 const Float_t kbig = 1.e10;
1178
1179 Int_t id,copy;
1180 Float_t hits[5];
1181 Int_t vol[2];
1182 TLorentzVector p;
1183
1184 vol[1]=0; // preset row number to 0
1185 //
1186 gMC->SetMaxStep(kbig);
1187
1188
1189
1190 Float_t charge = gMC->TrackCharge();
1191
1192 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1193
1194 // check the sensitive volume
1195
1196 id = gMC->CurrentVolID(copy); // vol ID and copy number (starts from 1!)
1197 if(id != fIDrift && id != fIdSens) return; // not in the sensitive folume
1198
1199 gMC->TrackPosition(p);
1200 Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1201 //
1202
1203 //
1204 Double_t angle = TMath::ACos(p[0]/r);
1205 angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle;
1206 //
1207 // angular segment, it is not a real sector number...
1208 //
1209 Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/
1210 fTPCParam->GetInnerAngle());
1211 // rotate to segment "0"
1212 Float_t cos,sin;
1213 fTPCParam->AdjustCosSin(sector,cos,sin);
1214 Float_t x1=p[0]*cos + p[1]*sin;
1215 // check if within sector's limits
1216 if(x1>=fTPCParam->GetInnerRadiusLow()&&x1<=fTPCParam->GetInnerRadiusUp()
1217 ||x1>=fTPCParam->GetOuterRadiusLow()&&x1<=fTPCParam->GetOuterRadiusUp()){
1218 // calculate real sector number...
1219 if (x1>fTPCParam->GetOuterRadiusLow()){
1220 sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/
1221 fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector();
1222 if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1);
1223 }
1224 else
1225 if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1);
1226 //
1227 // here I have a sector number
1228 //
1229
1230 vol[0]=sector;
1231 // check if change of sector
1232 if(sector != fSecOld){
1233 fSecOld=sector;
1234 // add track reference
e6add757 1235 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTPC);
457e2170 1236 }
1237 // track is in the sensitive strip
1238 if(id == fIdSens){
1239 // track is entering the strip
1240 if (gMC->IsTrackEntering()){
1241 Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp();
1242 vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows;
1243 // row numbers are autonomous for lower and upper sectors
1244 if(vol[0] > fTPCParam->GetNInnerSector()) {
1245 vol[1] -= fTPCParam->GetNRowLow();
1246 }
1247 //
1248 if(vol[0]<fTPCParam->GetNInnerSector()&&vol[1] == 0){
1249
1250 // lower sector, row 0, because Jouri wants to have this
1251
1252 gMC->TrackMomentum(p);
1253 hits[0]=p[0];
1254 hits[1]=p[1];
1255 hits[2]=p[2];
1256 hits[3]=0.; // this hit has no energy loss
1257 // Get also the track time for pileup simulation
1258 hits[4]=gMC->TrackTime();
1259
1260 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1261 }
1262 //
1263
1264 gMC->TrackPosition(p);
1265 hits[0]=p[0];
1266 hits[1]=p[1];
1267 hits[2]=p[2];
1268 hits[3]=0.; // this hit has no energy loss
1269 // Get also the track time for pileup simulation
1270 hits[4]=gMC->TrackTime();
1271
1272 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1273
1274 }
1275 else return;
1276 }
1277 //-----------------------------------------------------------------
1278 // charged particle is in the sensitive drift volume
1279 //-----------------------------------------------------------------
1280
1281 if(gMC->TrackStep() > 0){
1282
1283 Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
1284 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1285 //
1286 gMC->TrackPosition(p);
1287 hits[0]=p[0];
1288 hits[1]=p[1];
1289 hits[2]=p[2];
1290 hits[3]=(Float_t)nel;
1291
1292 // Add this hit
1293
1294 if (fHitType&&2){
1295 gMC->TrackMomentum(p);
1296 Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1297 Float_t precision = (momentum>0.1) ? 0.002 :0.01;
1298 fTrackHits->SetHitPrecision(precision);
1299 }
1300
1301 // Get also the track time for pileup simulation
1302 hits[4]=gMC->TrackTime();
1303
1304 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1305
1306 } // step>0
1307 } //within sector's limits
1308 // Stemax calculation for the next step
1309 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1310 Float_t pp;
1311 TLorentzVector mom;
1312 gMC->TrackMomentum(mom);
1313 Float_t ptot=mom.Rho();
1314 Float_t betaGamma = ptot/gMC->TrackMass();
1315
1316 Int_t pid=gMC->TrackPid();
1317 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
1318 {
1319 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
1320 }
1321 else
1322 {
1323
1324 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg
1325 pp=kprim*BetheBloch(betaGamma);
1326
1327 if(TMath::Abs(charge) > 1.) pp *= (charge*charge);
1328 }
1329
1330 Double_t rnd = gMC->GetRandom()->Rndm();
1331
1332 gMC->SetMaxStep(-TMath::Log(rnd)/pp);
1333
1334
1335}
1336
1337//_____________________________________________________________________________
1338Float_t AliTPCv4::BetheBloch(Float_t bg)
1339{
1340 //
1341 // Bethe-Bloch energy loss formula
1342 //
1343 const Double_t kp1=0.76176e-1;
1344 const Double_t kp2=10.632;
1345 const Double_t kp3=0.13279e-4;
1346 const Double_t kp4=1.8631;
1347 const Double_t kp5=1.9479;
1348
1349 Double_t dbg = (Double_t) bg;
1350
1351 Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg);
1352
1353 Double_t aa = TMath::Power(beta,kp4);
1354 Double_t bb = TMath::Power(1./dbg,kp5);
1355
1356 bb=TMath::Log(kp3+bb);
1357
1358 return ((Float_t)((kp2-aa-bb)*kp1/aa));
1359}
1360
1361