1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
19 ///////////////////////////////////////////////////////////////////////////////
21 // Time Projection Chamber version 2 -- detailed TPC and slow simulation //
25 <img src="picts/AliTPCv2Class.gif">
30 ///////////////////////////////////////////////////////////////////////////////
34 #include <TLorentzVector.h>
38 #include "AliMathBase.h"
39 #include "AliTrackReference.h"
40 #include "AliTPCParam.h"
41 #include "AliTPCTrackHitsV2.h"
43 #include "AliGeomManager.h"
44 #include "TGeoVolume.h"
49 #include "TGeoCompositeShape.h"
51 #include "TGeoPhysicalNode.h"
52 #include "TGeoHalfSpace.h"
53 #include "TTreeStream.h"
57 //_____________________________________________________________________________
58 AliTPCv2::AliTPCv2(const char *name, const char *title) :
65 // Standard constructor for Time Projection Chamber version 2
69 SetBufferSize(128000);
73 // fTPCParam->Write(fTPCParam->GetTitle());
76 //_____________________________________________________________________________
77 void AliTPCv2::CreateGeometry()
80 // Create the geometry of Time Projection Chamber version 2
84 <img src="picts/AliTPC.gif">
89 <img src="picts/AliTPCv2Tree.gif">
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 //----------------------------------------------------------
99 // tpc - this will be the mother volume
103 // here I define a volume TPC
104 // retrive the medium name with "TPC_" as a leading string
106 TGeoPcon *tpc = new TGeoPcon(0.,360.,24); //24 sections
108 tpc->DefineSection(0,-291.,77.,278.);
109 tpc->DefineSection(1,-270,77.,278.);
111 tpc->DefineSection(2,-270.,77.,278.);
112 tpc->DefineSection(3,-259.6,70.,278.);
114 tpc->DefineSection(4,-259.6,68.1,278.);
115 tpc->DefineSection(5,-253.6,68.1,278.);
117 tpc->DefineSection(6,-253.6,68.,278.);
118 tpc->DefineSection(7,-74.0,60.8,278.);
120 tpc->DefineSection(8,-74.0,60.1,278.);
121 tpc->DefineSection(9,-73.3,60.1,278.);
123 tpc->DefineSection(10,-73.3,56.9,278.);
124 tpc->DefineSection(11,-68.5,56.9,278.);
126 tpc->DefineSection(12,-68.5,60.,278.);
127 tpc->DefineSection(13,-65.,60.,278.);
129 tpc->DefineSection(14,-65.,56.9,278.);
130 tpc->DefineSection(15,73.3,56.9,278.);
132 tpc->DefineSection(16,73.3,60.1,278.);
133 tpc->DefineSection(17,74.0,60.1,278.);
135 tpc->DefineSection(18,74.0,60.8,278.);
136 tpc->DefineSection(19,253.6,65.5,278.);
138 tpc->DefineSection(20,253.6,65.6,278.);
139 tpc->DefineSection(21,259.6,65.6,278.);
141 tpc->DefineSection(22,259.6,70.0,278.);
142 tpc->DefineSection(23,291.,77.,278.);
144 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
145 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
147 // drift volume - sensitive volume, extended beyond the
148 // endcaps, because of the alignment
150 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
151 dvol->DefineSection(0,-260.,74.5,264.4);
152 dvol->DefineSection(1,-253.6,74.5,264.4);
154 dvol->DefineSection(2,-253.6,76.6774,258.);
155 dvol->DefineSection(3,253.6,76.6774,258.);
157 dvol->DefineSection(4,253.6,74.5,264.4);
158 dvol->DefineSection(5,260.,74.5,264.4);
160 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-2");
161 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
167 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
169 tpco->DefineSection(0,-256.6,264.8,278.);
170 tpco->DefineSection(1,-253.6,264.8,278.);
172 tpco->DefineSection(2,-253.6,258.,278.);
173 tpco->DefineSection(3,250.6,258.,278.);
175 tpco->DefineSection(4,250.6,258.,275.5);
176 tpco->DefineSection(5,253.6,258.,275.5);
178 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
179 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
181 TGeoRotation *segrot;//segment rotations
183 // outer containment vessel
185 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
187 tocv->DefineSection(0,-256.6,264.8,278.);
188 tocv->DefineSection(1,-253.6,264.8,278.);
190 tocv->DefineSection(2,-253.6,274.8124,278.);
191 tocv->DefineSection(3,247.6,274.8124,278.);
193 tocv->DefineSection(4,247.6,270.4,278.);
194 tocv->DefineSection(5,250.6,270.4,278.);
196 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
197 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
199 TGeoTubeSeg *to1 = new TGeoTubeSeg(274.8174,277.995,252.1,0.,59.9); //epoxy
200 TGeoTubeSeg *to2 = new TGeoTubeSeg(274.8274,277.985,252.1,0.,59.9); //tedlar
201 TGeoTubeSeg *to3 = new TGeoTubeSeg(274.8312,277.9812,252.1,0.,59.9);//prepreg2
202 TGeoTubeSeg *to4 = new TGeoTubeSeg(274.9062,277.9062,252.1,0.,59.9);//nomex
203 TGeoTubeSeg *tog5 = new TGeoTubeSeg(274.8174,277.995,252.1,59.9,60.);//epoxy
205 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
206 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
207 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
208 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
210 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
211 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
212 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
213 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
214 TGeoVolume *togv5 = new TGeoVolume("TPC_OCVG5",tog5,sm1);
215 //-------------------------------------------------------
216 // Tpc Outer Field Cage
217 // daughters - composite (sandwich)
218 //-------------------------------------------------------
220 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
222 tofc->DefineSection(0,-253.6,258.,269.6);
223 tofc->DefineSection(1,-250.6,258.,269.6);
225 tofc->DefineSection(2,-250.6,258.,260.0676);
226 tofc->DefineSection(3,250.6,258.,260.0676);
228 tofc->DefineSection(4,250.6,258.,275.5);
229 tofc->DefineSection(5,253.6,258.,275.5);
231 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
233 TGeoTubeSeg *tf1 = new TGeoTubeSeg(258.0,260.0676,252.1,0.,59.9); //tedlar
234 TGeoTubeSeg *tf2 = new TGeoTubeSeg(258.0038,260.0638,252.1,0.,59.9); //prepreg3
235 TGeoTubeSeg *tf3 = new TGeoTubeSeg(258.0338,260.0338,252.1,0.,59.9);//nomex
236 TGeoTubeSeg *tfg4 = new TGeoTubeSeg(258.0,260.0676,252.1,59.9,60.); //epoxy glue
238 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
240 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
241 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
242 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
243 TGeoVolume *tfg4v = new TGeoVolume("TPC_OFCG4",tfg4,sm1);
245 // outer part - positioning
247 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);//ocv
249 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);//ofc
251 TGeoVolumeAssembly *t200 = new TGeoVolumeAssembly("TPC_OCVSEG");
252 TGeoVolumeAssembly *t300 = new TGeoVolumeAssembly("TPC_OFCSEG");
254 // assembly OCV and OFC
257 t200->AddNode(tov1,1); t200->AddNode(togv5,1);
258 t300->AddNode(tf1v,1); t300->AddNode(tfg4v,1);
259 // 2nd - rotation 60 deg
260 segrot = new TGeoRotation();
261 segrot->RotateZ(60.);
262 t200->AddNode(tov1,2,segrot); t200->AddNode(togv5,2,segrot);
263 t300->AddNode(tf1v,2,segrot); t300->AddNode(tfg4v,2,segrot);
264 // 3rd rotation 120 deg
265 segrot = new TGeoRotation();
266 segrot->RotateZ(120.);
267 t200->AddNode(tov1,3,segrot); t200->AddNode(togv5,3,segrot);
268 t300->AddNode(tf1v,3,segrot); t300->AddNode(tfg4v,3,segrot);
269 //4th rotation 180 deg
270 segrot = new TGeoRotation();
271 segrot->RotateZ(180.);
272 t200->AddNode(tov1,4,segrot); t200->AddNode(togv5,4,segrot);
273 t300->AddNode(tf1v,4,segrot); t300->AddNode(tfg4v,4,segrot);
274 //5th rotation 240 deg
275 segrot = new TGeoRotation();
276 segrot->RotateZ(240.);
277 t200->AddNode(tov1,5,segrot); t200->AddNode(togv5,5,segrot);
278 t300->AddNode(tf1v,5,segrot); t300->AddNode(tfg4v,5,segrot);
279 //6th rotation 300 deg
280 segrot = new TGeoRotation();
281 segrot->RotateZ(300.);
282 t200->AddNode(tov1,6,segrot); t200->AddNode(togv5,6,segrot);
283 t300->AddNode(tf1v,6,segrot); t300->AddNode(tfg4v,6,segrot);
285 v3->AddNode(t200,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(t300,1);
287 v2->AddNode(v3,1); v2->AddNode(v4,1);
290 //--------------------------------------------------------------------
291 // Tpc Inner INsulator (CO2)
292 // the cones, the central drum and the inner f.c. sandwich with a piece
293 // of the flane will be placed in the TPC
294 //--------------------------------------------------------------------
295 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
297 tpci->DefineSection(0,-253.6,68.4,76.6774);
298 tpci->DefineSection(1,-74.0,61.2,76.6774);
300 tpci->DefineSection(2,74.0,61.2,76.6774);
302 tpci->DefineSection(3,253.6,65.9,76.6774);
304 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
306 // now the inner field cage - only part of flanges (2 copies)
308 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
309 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
311 //---------------------------------------------------------
312 // Tpc Inner Containment vessel - Muon side
313 //---------------------------------------------------------
314 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
316 tcms->DefineSection(0,-259.1,68.1,74.2);
317 tcms->DefineSection(1,-253.6,68.1,74.2);
319 tcms->DefineSection(2,-253.6,68.1,68.4);
320 tcms->DefineSection(3,-74.0,60.9,61.2);
322 tcms->DefineSection(4,-74.0,60.1,61.2);
323 tcms->DefineSection(5,-73.3,60.1,61.2);
325 tcms->DefineSection(6,-73.3,56.9,61.2);
326 tcms->DefineSection(7,-73.0,56.9,61.2);
328 tcms->DefineSection(8,-73.0,56.9,58.8);
329 tcms->DefineSection(9,-71.3,56.9,58.8);
331 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
332 //-----------------------------------------------
333 // inner containment vessel - shaft side
334 //-----------------------------------------------
335 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
337 tcss->DefineSection(0,71.3,56.9,58.8);
338 tcss->DefineSection(1,73.0,56.9,58.8);
340 tcss->DefineSection(2,73.0,56.9,61.2);
341 tcss->DefineSection(3,73.3,56.9,61.2);
343 tcss->DefineSection(4,73.3,60.1,61.2);
344 tcss->DefineSection(5,74.0,60.1,61.2);
346 tcss->DefineSection(6,74.0,60.9,61.2);
347 tcss->DefineSection(7,253.6,65.6,65.9);
349 tcss->DefineSection(8,253.6,65.6,74.2);
350 tcss->DefineSection(9,258.1,65.6,74.2);
352 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
353 //-----------------------------------------------
355 // define 4 parts and make an assembly
356 //-----------------------------------------------
357 // part1 - Al - 2 copies
358 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
359 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
360 // sandwich - outermost parts - 2 copies
364 TGeoTubeSeg *t2 = new TGeoTubeSeg(76.6774,78.845,74.175,350.,109.4); // tedlar 38 microns
365 TGeoTubeSeg *t3 = new TGeoTubeSeg(76.6812,78.8412,74.175,350.,109.4); // prepreg2 500 microns
366 TGeoTubeSeg *t4 = new TGeoTubeSeg(76.7312,78.7912,74.175,350.,109.4); // prepreg3 300 microns
367 TGeoTubeSeg *t5 = new TGeoTubeSeg(76.7612,78.7612,74.175,350.,109.4); // nomex 2 cm
368 TGeoTubeSeg *tepox1 = new TGeoTubeSeg(76.6774,78.845,74.175,109.4,110.);//epoxy
369 TGeoTubeSeg *tpr1 = new TGeoTubeSeg(78.845,78.885,74.175,109.,111.);
371 // volumes for the outer part
372 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
373 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
374 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
375 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
376 TGeoVolume *tvep1 = new TGeoVolume("TPC_IFEPOX1",tepox1,sm1);
377 TGeoVolume *tvpr1 = new TGeoVolume("TPC_PRSTR1",tpr1,sm2);
379 // middle parts - 2 copies
383 TGeoTubeSeg *t6 = new TGeoTubeSeg(76.6774,78.795,5.,350.,109.4); // tedlar 38 microns
384 TGeoTubeSeg *t7 = new TGeoTubeSeg(76.6812,78.7912,5.,350.,109.4); // prepreg2 250 microns
385 TGeoTubeSeg *t8 = new TGeoTubeSeg(76.7062,78.7662,5.,350.,109.4); // prepreg3 300 microns
386 TGeoTubeSeg *t9 = new TGeoTubeSeg(76.7362,78.7362,5.,350.,109.4); // nomex 2 cm
387 TGeoTubeSeg *tepox2 = new TGeoTubeSeg(76.6774,78.795,5.,109.4,110.);//epoxy
388 TGeoTubeSeg *tpr2 = new TGeoTubeSeg(78.795,78.835,5.,109.,111.);
389 // volumes for the middle part
390 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
391 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
392 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
393 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
394 TGeoVolume *tvep2 = new TGeoVolume("TPC_IFEPOX2",tepox2,sm1);
395 TGeoVolume *tvpr2 = new TGeoVolume("TPC_PRSTR2",tpr2,sm2);
396 // central part - 1 copy
398 // segment central part
400 TGeoTubeSeg *t10 = new TGeoTubeSeg(76.6774,78.785,93.75,350.,109.4); // tedlar 38 microns
401 TGeoTubeSeg *t11 = new TGeoTubeSeg(76.6812,78.7812,93.75,350.,109.4); // prepreg3 500 microns
402 TGeoTubeSeg *t12 = new TGeoTubeSeg(76.7312,78.7312,93.75,350.,109.4); // nomex 2 cm
403 TGeoTubeSeg *tepox3 = new TGeoTubeSeg(76.6774,78.785,93.75,109.4,110.);//epoxy
404 TGeoTubeSeg *tpr3 = new TGeoTubeSeg(78.785,78.825,93.75,109.,111.);
405 // volumes for the central part
406 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
407 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
408 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
409 TGeoVolume *tvep3 = new TGeoVolume("TPC_IFEPOX3",tepox3,sm1);
410 TGeoVolume *tvpr3 = new TGeoVolume("TPC_PRSTR3",tpr3,sm2);
412 // creating a sandwich for the outer par,t tv2 is the mother
414 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
416 // creating a sandwich for the middle part, tv6 is the mother
418 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
420 // creating a sandwich for the central part, tv10 is the mother
422 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
424 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC"); // ifc itself - 3 segments
427 // first segment - no rotation
430 tv100->AddNode(tv10,1); //sandwich
431 tv100->AddNode(tvep3,1);//epoxy
432 tv100->AddNode(tvpr3,1);//prepreg strip
434 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75)); //sandwich1
435 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75)); // sandwich2
436 tv100->AddNode(tvep2,1,new TGeoTranslation(0.,0.,-98.75)); //epoxy
437 tv100->AddNode(tvep2,2,new TGeoTranslation(0.,0.,98.75)); //epoxy
438 tv100->AddNode(tvpr2,1,new TGeoTranslation(0.,0.,-98.75));//prepreg strip
439 tv100->AddNode(tvpr2,2,new TGeoTranslation(0.,0.,98.75));
441 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925)); //sandwich
442 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
443 tv100->AddNode(tvep1,1,new TGeoTranslation(0.,0.,-177.925)); //epoxy
444 tv100->AddNode(tvep1,2,new TGeoTranslation(0.,0.,177.925));
445 tv100->AddNode(tvpr1,1,new TGeoTranslation(0.,0.,-177.925));//prepreg strip
446 tv100->AddNode(tvpr1,2,new TGeoTranslation(0.,0.,-177.925));
448 // second segment - rotation 120 deg.
450 segrot = new TGeoRotation();
451 segrot->RotateZ(120.);
454 tv100->AddNode(tv10,2,segrot); //sandwich
455 tv100->AddNode(tvep3,2,segrot);//epoxy
456 tv100->AddNode(tvpr3,2,segrot);//prepreg strip
458 tv100->AddNode(tv6,3,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //sandwich1
459 tv100->AddNode(tv6,4,new TGeoCombiTrans(0.,0.,98.75,segrot)); // sandwich2
460 tv100->AddNode(tvep2,3,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //epoxy
461 tv100->AddNode(tvep2,4,new TGeoCombiTrans(0.,0.,98.75,segrot)); //epoxy
462 tv100->AddNode(tvpr2,3,new TGeoCombiTrans(0.,0.,-98.75,segrot));//prepreg strip
463 tv100->AddNode(tvpr2,4,new TGeoCombiTrans(0.,0.,98.75,segrot));
465 tv100->AddNode(tv2,3,new TGeoCombiTrans(0.,0.,-177.925,segrot));//sandwich
466 tv100->AddNode(tv2,4,new TGeoCombiTrans(0.,0.,177.925,segrot));
467 tv100->AddNode(tvep1,3,new TGeoCombiTrans(0.,0.,-177.925,segrot));//epoxy
468 tv100->AddNode(tvep1,4,new TGeoCombiTrans(0.,0.,177.925,segrot));
469 tv100->AddNode(tvpr1,3,new TGeoCombiTrans(0.,0.,-177.925,segrot));//prepreg strip
470 tv100->AddNode(tvpr1,4,new TGeoCombiTrans(0.,0.,177.925,segrot));
472 // third segment - rotation 240 deg.
474 segrot = new TGeoRotation();
475 segrot->RotateZ(240.);
478 tv100->AddNode(tv10,3,segrot); //sandwich
479 tv100->AddNode(tvep3,3,segrot);//epoxy
480 tv100->AddNode(tvpr3,3,segrot);//prepreg strip
482 tv100->AddNode(tv6,5,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //sandwich1
483 tv100->AddNode(tv6,6,new TGeoCombiTrans(0.,0.,98.75,segrot)); // sandwich2
484 tv100->AddNode(tvep2,5,new TGeoCombiTrans(0.,0.,-98.75,segrot)); //epoxy
485 tv100->AddNode(tvep2,6,new TGeoCombiTrans(0.,0.,98.75,segrot)); //epoxy
486 tv100->AddNode(tvpr2,5,new TGeoCombiTrans(0.,0.,-98.75,segrot));//prepreg strip
487 tv100->AddNode(tvpr2,6,new TGeoCombiTrans(0.,0.,98.75,segrot));
489 tv100->AddNode(tv2,5,new TGeoCombiTrans(0.,0.,-177.925,segrot));//sandwich
490 tv100->AddNode(tv2,6,new TGeoCombiTrans(0.,0.,177.925,segrot));
491 tv100->AddNode(tvep1,5,new TGeoCombiTrans(0.,0.,-177.925,segrot));//epoxy
492 tv100->AddNode(tvep1,6,new TGeoCombiTrans(0.,0.,177.925,segrot));
493 tv100->AddNode(tvpr1,5,new TGeoCombiTrans(0.,0.,-177.925,segrot));//prepreg strip
494 tv100->AddNode(tvpr1,6,new TGeoCombiTrans(0.,0.,177.925,segrot));
496 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
497 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
499 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
500 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
501 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
502 v9->AddNode(tv100,1);
508 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
509 cfl->DefineSection(0,-71.1,59.7,61.2);
510 cfl->DefineSection(1,-68.6,59.7,61.2);
512 cfl->DefineSection(2,-68.6,60.6124,61.2);
513 cfl->DefineSection(3,68.6,60.6124,61.2);
515 cfl->DefineSection(4,68.6,59.7,61.2);
516 cfl->DefineSection(5,71.1,59.7,61.2);
518 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
520 TGeoTubeSeg *cd1 = new TGeoTubeSeg(60.6224,61.19,71.1,0.1,119.9);
521 TGeoTubeSeg *cd2 = new TGeoTubeSeg(60.6262,61.1862,71.1,0.1,119.9);
522 TGeoTubeSeg *cd3 = new TGeoTubeSeg(60.6462,61.1662,71.1,0.1,119.9);
523 TGeoTubeSeg *cd4 = new TGeoTubeSeg(60.6562,61.1562,71.1,0.1,119.9);
524 TGeoTubeSeg *tepox4 = new TGeoTubeSeg(60.6224,61.19,71.1,359.9,0.1);
525 // TGeoTube *cd1 = new TGeoTube(60.6224,61.19,71.1);
526 // TGeoTube *cd2 = new TGeoTube(60.6262,61.1862,71.1);
527 // TGeoTube *cd3 = new TGeoTube(60.6462,61.1662,71.1);
528 // TGeoTube *cd4 = new TGeoTube(60.6562,61.1562,71.1);
530 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
531 TGeoMedium *sm8 = gGeoManager->GetMedium("TPC_Epoxyfm");
532 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
533 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
534 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm8); //epoxy film
535 TGeoVolume *cd4v = new TGeoVolume("TPC_CDR4",cd4,sm4); //nomex
536 TGeoVolume *tvep4 = new TGeoVolume("TPC_IFEPOX4",tepox4,sm1);
539 // seals for central drum 2 copies
541 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
542 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
543 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
544 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.2));
545 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.2));
548 TGeoPcon *se = new TGeoPcon(0.,360.,6);
549 se->DefineSection(0,-72.8,59.7,61.2);
550 se->DefineSection(1,-72.3,59.7,61.2);
552 se->DefineSection(2,-72.3,58.85,61.2);
553 se->DefineSection(3,-71.6,58.85,61.2);
555 se->DefineSection(4,-71.6,59.7,61.2);
556 se->DefineSection(5,-71.3,59.7,61.2);
558 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
560 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
561 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
563 // define reflection matrix
565 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
567 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cd3v->AddNode(cd4v,1); //sandwich
569 cflv->AddNode(cd1v,1); cflv->AddNode(tvep4,1);
571 segrot = new TGeoRotation();
572 segrot->RotateZ(120.);
573 cflv->AddNode(cd1v,2,segrot); cflv->AddNode(tvep4,2,segrot);
575 segrot = new TGeoRotation();
576 segrot->RotateZ(240.);
577 cflv->AddNode(cd1v,3,segrot); cflv->AddNode(tvep4,3,segrot);
579 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
580 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
581 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
583 // central membrane - 2 rings and a mylar membrane - assembly
585 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
586 TGeoTube *oh = new TGeoTube(250.,256.,0.5);
587 TGeoTube *mem = new TGeoTube(84.05,250.,0.00115);
590 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
592 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
593 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
595 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
597 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
604 // end caps - they are make as an assembly of single segments
605 // containing both readout chambers
607 Double_t openingAngle = 10.*TMath::DegToRad();
608 Double_t thick=1.5; // rib
609 Double_t shift = thick/TMath::Sin(openingAngle);
611 Double_t lowEdge = 86.3; // hole in the wheel
612 Double_t upEdge = 240.4; // hole in the wheel
614 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
616 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
618 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
619 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
621 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
622 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
624 Double_t ys = shift*TMath::Sin(openingAngle);
625 Double_t xs = shift*TMath::Cos(openingAngle);
626 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
627 tr->RegisterYourself();
628 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
629 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
630 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
631 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
632 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
633 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
634 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
636 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
642 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
643 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
645 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
646 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
647 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
649 Double_t tga = (19.8328-12.3742)/39.3;
651 xmin = 9.55*tga+12.3742;
652 xmax = 9.95*tga+12.3742;
653 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
654 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
655 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
656 xmin=19.4*tga+12.3742;
657 xmax=19.9*tga+12.3742;
658 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
659 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
660 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
661 xmin=29.35*tga+12.3742;
662 xmax=29.75*tga+12.3742;
663 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
664 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
665 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
667 // holes for connectors
669 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
670 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
671 TString fileName(gSystem->Getenv("ALICE_ROOT"));
672 fileName += "/TPC/conn_iroc.dat";
674 in.open(fileName.Data(), ios_base::in); // asci file
675 TGeoRotation *rrr[86];
676 for(Int_t i =0;i<86;i++){
681 rrr[i]= new TGeoRotation();
682 rrr[i]->RotateY(ang);
683 ibdv->AddNode(connv,i+1,new TGeoCombiTrans(x,y,z,rrr[i]));
687 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
689 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
690 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
691 tr1->RegisterYourself();
692 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
693 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
695 // pad plane and wire fixations
697 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
698 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
699 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
700 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
701 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
702 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
704 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
706 iroc->AddNode(ibdv,1);
707 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
708 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
709 tga =(23.3521-14.5974)/49.65;
710 Double_t xx = 24.825*tga+14.5974-0.6;
711 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
712 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
716 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
717 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
718 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
719 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
720 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
722 tga=(38.5084-20.2938)/99.3;
723 xmin=tga*10.2+20.2938;
724 xmax=tga*10.6+20.2938;
725 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
726 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
728 xmin=22.55*tga+20.2938;
729 xmax=24.15*tga+20.2938;
730 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
731 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
733 xmin=36.1*tga+20.2938;
734 xmax=36.5*tga+20.2938;
735 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
736 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
738 xmin=49.0*tga+20.2938;
739 xmax=50.6*tga+20.2938;
740 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
741 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
743 xmin=63.6*tga+20.2938;
744 xmax=64.0*tga+20.2938;
745 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
746 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
748 xmin=75.5*tga+20.2938;
749 xmax=77.15*tga+20.2938;
750 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
751 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
753 xmin=88.7*tga+20.2938;
754 xmax=89.1*tga+20.2938;
755 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
756 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
758 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
759 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
760 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
761 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
762 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
763 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
764 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
766 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
767 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
768 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
769 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
770 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
772 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
773 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
774 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
775 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
776 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
778 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
779 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
780 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
781 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
782 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
783 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
784 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
785 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
787 // holes for connectors
789 fileName = gSystem->Getenv("ALICE_ROOT");
790 fileName += "/TPC/conn_oroc.dat";
791 in.open(fileName.Data(), ios_base::in); // asci file
792 TGeoRotation *rr[78];
793 for(Int_t i =0;i<78;i++){
796 Double_t x1,z1,x2,z2;
798 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
799 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
801 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
803 rr[i]= new TGeoRotation();
808 obdv->AddNode(connv,i+1,new TGeoCombiTrans(x1,y,z1,rr[i]));
809 obdv->AddNode(connv,i+79,new TGeoCombiTrans(x2,y,z2,rr[i]));
813 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
814 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
815 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
816 tr5->RegisterYourself();
817 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
818 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
820 // pad plane and wire fixations
822 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
823 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
825 tga=(43.5239-23.3874)/114.2;
826 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
827 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
828 xx = 57.1*tga+23.3874-0.7;
829 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
830 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
832 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
834 oroc->AddNode(obdv,1);
835 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
836 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
837 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
838 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
840 // now iroc and oroc are placed into a sector...
842 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
843 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
844 TGeoRotation rot1("rot1",90.,90.,0.);
845 TGeoRotation rot2("rot2");
847 TGeoRotation *rot = new TGeoRotation("rot");
851 x0=110.2*TMath::Cos(openingAngle);
852 y0=110.2*TMath::Sin(openingAngle);
853 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
854 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
855 x0=188.45*TMath::Cos(openingAngle);
856 y0=188.45*TMath::Sin(openingAngle);
857 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
858 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
863 secta->AddNode(ch,1);
864 secta->AddNode(iroc,1,combi1a);
865 secta->AddNode(oroc,1,combi2a);
869 sectc->AddNode(ch,1);
870 sectc->AddNode(iroc,1,combi1c);
871 sectc->AddNode(oroc,1,combi2c);
873 // now I try to make wheels...
875 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
876 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
878 TGeoRotation *rwh[18];
879 for(Int_t i =0;i<18;i++){
880 Double_t phi = (20.*i);
881 rwh[i]=new TGeoRotation();
882 rwh[i]->RotateZ(phi);
883 wheela->AddNode(secta,i+1,rwh[i]);
884 wheelc->AddNode(sectc,i+1,rwh[i]);
887 // wheels in the drift volume!
889 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
890 v9->AddNode(wheela,1,combi3);
891 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
892 //_____________________________________________________________
893 // service support wheel
894 //_____________________________________________________________
895 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
896 sw->DefineSection(0,-4.,80.5,251.75);
897 sw->DefineSection(1,4.,80.5,251.75);
898 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
901 shift = thick/TMath::Sin(openingAngle);
902 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
903 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
904 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
905 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
907 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
908 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
909 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
910 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
911 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
916 ys = shift*TMath::Sin(openingAngle);
917 xs = shift*TMath::Cos(openingAngle);
918 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
920 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
921 co->DefineSection(0,-0.5,77.,255.25);
922 co->DefineSection(1,0.5,77.,255.25);
923 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
925 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
926 shift=4./TMath::Sin(openingAngle);
927 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
928 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
930 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
932 ys = shift*TMath::Sin(openingAngle);
933 xs = shift*TMath::Cos(openingAngle);
934 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
936 // Sector as an Assembly
938 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
939 swhs->AddNode(swv,1);
940 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
941 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
943 // SSW as an Assembly of sectors
945 TGeoRotation *rsw[18];
946 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
947 for(Int_t i =0;i<18;i++){
948 Double_t phi = (20.*i);
949 rsw[i] = new TGeoRotation();
950 rsw[i]->RotateZ(phi);
951 swheel->AddNode(swhs,i+1,rsw[i]);
953 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
954 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
956 // sensitive strips - strip "0" is always set
959 totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp();
962 gGeoManager->Volume("TPC_Strip","PGON",m5->GetId(),upar);
963 upar=new Double_t [10];
972 Double_t rlow=fTPCParam->GetPadRowRadiiLow(0);
979 gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
980 gGeoManager->Node("TPC_Strip",totrows+1,
981 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
983 // now, strips optionally
987 for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){
988 rlow=fTPCParam->GetPadRowRadiiLow(i-1);
993 gGeoManager->Node("TPC_Strip",i,
994 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
995 gGeoManager->Node("TPC_Strip",totrows+i,
996 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
999 for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){
1000 rlow=fTPCParam->GetPadRowRadiiUp(i-1);
1005 gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(),
1006 "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10);
1007 gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(),
1008 "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10);
1011 //----------------------------------------------------------
1012 // TPC Support Rods - MAKROLON
1013 //----------------------------------------------------------
1014 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
1015 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
1016 TGeoMedium *m10 = gGeoManager->GetMedium("TPC_Alumina");
1017 TGeoMedium *m11 = gGeoManager->GetMedium("TPC_Peek");
1018 TGeoMedium *m12 = gGeoManager->GetMedium("TPC_Water");
1019 TGeoMedium *m13 = gGeoManager->GetMedium("TPC_Brass");
1021 // tpc rod is an assembly of 10 long parts and 2 short parts
1022 // connected with alu rings and plagged on both sides.
1027 TGeoPcon *rod = new TGeoPcon("rod",0.,360.,6);
1028 rod->DefineSection(0,-10.43,1.92,2.08);
1029 rod->DefineSection(1,-9.75,1.92,2.08);
1031 rod->DefineSection(2,-9.75,1.8,2.2);
1032 rod->DefineSection(3,9.75,1.8,2.2);
1034 rod->DefineSection(4,9.75,1.92,2.08);
1035 rod->DefineSection(5,10.43,1.92,2.08);
1037 TGeoVolume *mrodl = new TGeoVolume("TPC_mrodl",rod,m6);
1041 TGeoPcon *rod1 = new TGeoPcon("rod1",0.,360.,6);
1042 rod1->DefineSection(0,-8.93,1.92,2.08);
1043 rod1->DefineSection(1,-8.25,1.92,2.08);
1045 rod1->DefineSection(2,-8.25,1.8,2.2);
1046 rod1->DefineSection(3,8.25,1.8,2.2);
1048 rod1->DefineSection(4,8.25,1.92,2.08);
1049 rod1->DefineSection(5,8.93,1.92,2.08);
1051 TGeoVolume *mrods = new TGeoVolume("TPC_mrods",rod1,m6);
1053 // below is for the resistor rod
1055 // hole for the brass connectors
1058 new TGeoTube("hhole",0.,0.3,0.3);
1060 //transformations for holes - initialy they
1061 // are placed at x=0 and negative y
1063 TGeoRotation *rhole = new TGeoRotation();
1064 rhole->RotateX(90.);
1065 TGeoCombiTrans *transf[13];
1067 for(Int_t i=0;i<13;i++){
1068 sprintf(name,"transf%d",i);
1069 transf[i]= new TGeoCombiTrans(name,0.,-2.,-9.+i*1.5,rhole);
1070 transf[i]->RegisterYourself();
1072 // union expression for holes
1073 TString operl("hhole:transf0");
1074 for (Int_t i=1;i<13;i++){
1075 sprintf(name,"+hhole:transf%d",i);
1079 TString opers("hhole:transf1");
1080 for (Int_t i=2;i<12;i++){
1081 sprintf(name,"+hhole:transf%d",i);
1085 new TGeoCompositeShape("hlv",operl.Data());
1086 new TGeoCompositeShape("hsv",opers.Data());
1088 TGeoCompositeShape *rodl = new TGeoCompositeShape("rodl","rod-hlv");
1089 TGeoCompositeShape *rods = new TGeoCompositeShape("rods","rod1-hsv");
1090 //rods - volumes - makrolon rods with holes
1091 TGeoVolume *rodlv = new TGeoVolume("TPC_rodl",rodl,m6);
1092 TGeoVolume *rodsv = new TGeoVolume("TPC_rods",rods,m6);
1095 TGeoTube *bcon = new TGeoTube(0.,0.3,0.3);//connectors
1096 TGeoVolume *bconv = new TGeoVolume("TPC_bcon",bcon,m13);
1098 // hooks holding strips
1100 new TGeoBBox("hk1",0.625,0.015,0.75);
1101 new TGeoBBox("hk2",0.625,0.015,0.15);
1102 TGeoTranslation *tr21 = new TGeoTranslation("tr21",0.,-0.03,-0.6);
1103 TGeoTranslation *tr12 = new TGeoTranslation("tr12",0.,-0.03,0.6);
1104 tr21->RegisterYourself();
1105 tr12->RegisterYourself();
1107 TGeoCompositeShape *hook = new TGeoCompositeShape("hook","hk1+hk2:tr21+hk2:tr12");
1108 TGeoVolume *hookv = new TGeoVolume("TPC_hook",hook,m13);
1110 // assembly of the short rod with connectors and hooks
1115 TGeoVolumeAssembly *spart = new TGeoVolumeAssembly("TPC_spart");
1117 spart->AddNode( rodsv,1);
1118 for(Int_t i=1;i<12;i++){
1119 spart->AddNode(bconv,i,transf[i]);
1121 for(Int_t i =0;i<11;i++){
1122 spart->AddNode(hookv,i+1,new TGeoTranslation(0.,-2.315,-7.5+i*1.5));
1127 TGeoVolumeAssembly *lpart = new TGeoVolumeAssembly("TPC_lpart");
1129 lpart->AddNode( rodlv,1);
1130 for(Int_t i=0;i<13;i++){
1131 lpart->AddNode(bconv,i+12,transf[i]);
1133 for(Int_t i =0;i<13;i++){
1134 lpart->AddNode(hookv,i+12,new TGeoTranslation(0.,-2.315,-9.+i*1.5));
1139 new TGeoTube("ring1",2.1075,2.235,0.53);
1140 new TGeoTube("ring2",1.7925,1.89,0.43);
1141 new TGeoTube("ring3",1.89,2.1075,0.05);
1142 TGeoCompositeShape *ring = new TGeoCompositeShape("ring","ring1+ring2+ring3");
1143 TGeoVolume *ringv = new TGeoVolume("TPC_ring",ring,m3);
1147 TGeoVolumeAssembly *tpcrrod = new TGeoVolumeAssembly("TPC_rrod");//rrod
1148 TGeoVolumeAssembly *tpcmrod = new TGeoVolumeAssembly("TPC_mrod");//makrolon rod
1150 for(Int_t i=0;i<11;i++){
1151 tpcrrod->AddNode(ringv,i+1,new TGeoTranslation(0.,0.,-105.+i*21));
1152 tpcmrod->AddNode(ringv,i+12,new TGeoTranslation(0.,0.,-105.+i*21));
1154 for(Int_t i=0;i<10;i++){
1155 tpcrrod->AddNode(lpart,i+1,new TGeoTranslation(0.,0.,-94.5+i*21));
1156 tpcmrod->AddNode(mrodl,i+1,new TGeoTranslation(0.,0.,-94.5+i*21));
1161 tpcrrod->AddNode(spart,1,new TGeoTranslation(0.,0.,-114.));
1162 tpcrrod->AddNode(spart,2,new TGeoTranslation(0.,0.,114.));
1163 tpcrrod->AddNode(ringv,23,new TGeoTranslation(0.,0.,-123.));
1164 tpcrrod->AddNode(ringv,24,new TGeoTranslation(0.,0.,123.));
1166 tpcmrod->AddNode(mrods,1,new TGeoTranslation(0.,0.,-114.));
1167 tpcmrod->AddNode(mrods,2,new TGeoTranslation(0.,0.,114.));
1168 tpcmrod->AddNode(ringv,25,new TGeoTranslation(0.,0.,-123.));
1169 tpcmrod->AddNode(ringv,26,new TGeoTranslation(0.,0.,123.));
1173 TGeoPcon *lp = new TGeoPcon(0.,360.,4);
1175 lp->DefineSection(0,-125.8,1.92,2.235);
1176 lp->DefineSection(1,-124.8,1.92,2.235);
1178 lp->DefineSection(2,-124.8,1.92,2.08);
1179 lp->DefineSection(3,-123.1,1.92,2.08);
1181 TGeoVolume *lpv1 = new TGeoVolume("TPC_lpv1",lp,m6);
1182 TGeoVolume *lpv2 = new TGeoVolume("TPC_lpv2",lp,m6);
1184 TGeoTube *lr = new TGeoTube(2.1075,2.235,0.5);
1185 TGeoVolume *lrv = new TGeoVolume("TPC_lrv",lr,m3);
1187 lpv2->AddNode(lrv,1,new TGeoTranslation(0.,0.,-125.3));
1189 tpcrrod->AddNode(lpv2,1);
1190 tpcmrod->AddNode(lpv1,1);
1194 TGeoTube *rp = new TGeoTube(1.92,2.08,2.025);
1195 TGeoVolume *rpv = new TGeoVolume("TPC_rpv",rp,m6);
1196 tpcrrod->AddNode(rpv,1, new TGeoTranslation(0.,0.,125.125));
1197 tpcmrod->AddNode(rpv,2,new TGeoTranslation(0.,0.,125.125));
1200 //HV rods - makrolon + 0.58cm (diameter) Cu
1201 TGeoTube *hvr = new TGeoTube(0.,1.465,126.5);
1202 TGeoTube *hvc = new TGeoTube(0.,0.29,126.5);
1204 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
1205 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
1206 hvrv->AddNode(hvcv,1);
1210 TGeoTube *cr = new TGeoTube(0.,0.45,126.2);
1211 TGeoTube *cw = new TGeoTube(0.,0.15,126.2);
1212 TGeoVolume *crv = new TGeoVolume("TPC_CR",cr,m10);
1213 TGeoVolume *cwv = new TGeoVolume("TPC_W",cw,m12);
1215 // ceramic rod with water
1217 crv->AddNode(cwv,1);
1221 TGeoTube *pr =new TGeoTube(0.2,0.35,126.2);
1222 TGeoVolume *prv = new TGeoVolume("TPC_PR",pr,m11);
1224 // copper plates with connectors
1226 new TGeoTube("tub",0.,1.7,0.025);
1228 // half space - points on the plane and a normal vector
1231 Double_t slope = TMath::Tan(22.*TMath::DegToRad());
1232 Double_t intp = 1.245;
1234 Double_t b = slope*slope+1.;
1243 norm=TMath::Sqrt(n[0]*n[0]+n[1]*n[1]);
1247 new TGeoHalfSpace("sp1",p,n);
1256 norm=TMath::Sqrt(n[0]*n[0]+n[1]*n[1]);
1260 new TGeoHalfSpace("sp2",p,n);
1263 new TGeoTube("h1",0.,0.5,0.025);
1264 new TGeoTube("h2",0.,0.35,0.025);
1266 TGeoTranslation *ttr11 = new TGeoTranslation("ttr11",-0.866,0.5,0.);
1267 TGeoTranslation *ttr22 = new TGeoTranslation("ttr22",0.866,0.5,0.);
1268 ttr11->RegisterYourself();
1269 ttr22->RegisterYourself();
1270 // elastic connector
1271 new TGeoBBox("elcon",0.72,0.005,0.3);
1272 TGeoRotation *crr1 = new TGeoRotation();
1273 crr1->RotateZ(-22.);
1274 TGeoCombiTrans *ctr1 = new TGeoCombiTrans("ctr1",-0.36011, -1.09951,-0.325,crr1);
1275 ctr1->RegisterYourself();
1276 TGeoCompositeShape *cs1 = new TGeoCompositeShape("cs1",
1277 "(((((tub-h1:ttr11)-h1:ttr22)-sp1)-sp2)-h2)+elcon:ctr1");
1279 TGeoVolume *csvv = new TGeoVolume("TPC_RR_CU",cs1,m7);
1281 // resistor rod assembly 2 ceramic rods, peak rod, Cu plates
1284 TGeoVolumeAssembly *rrod = new TGeoVolumeAssembly("TPC_RRIN");
1286 rrod->AddNode(crv,1,ttr11);
1287 rrod->AddNode(crv,2,ttr22);
1288 rrod->AddNode(prv,1);
1290 for(Int_t i=0;i<165;i++){
1291 rrod->AddNode(csvv,i+1,new TGeoTranslation(0.,0.,-122.675+i*1.5));
1294 TGeoTube *res = new TGeoTube(0.,0.15,0.5);
1295 TGeoVolume *resv = new TGeoVolume("TPC_RES",res,m10);
1296 TGeoVolumeAssembly *ress = new TGeoVolumeAssembly("TPC_RES_CH");
1297 ress->AddNode(resv,1,new TGeoTranslation(0.2,0.,0.));
1298 ress->AddNode(resv,2,new TGeoTranslation(-0.2,0.,0.));
1300 TGeoRotation *crr2 = new TGeoRotation();
1302 TGeoRotation *crr3 = new TGeoRotation();
1303 crr3->RotateY(-30.);
1305 for(Int_t i=0;i<164;i+=2){
1306 rrod->AddNode(ress,i+1, new TGeoCombiTrans(0.,1.2,-121.925+i*1.5,crr2));
1307 rrod->AddNode(ress,i+2, new TGeoCombiTrans(0.,1.2,-121.925+(i+1)*1.5,crr3));
1310 tpcrrod->AddNode(rrod,1,new TGeoCombiTrans(0.,0.,0.5,crr1));
1312 // guard ring resistor chain
1315 TGeoTube *gres1 = new TGeoTube(0.,0.375,125.);// inside ifc
1317 TGeoVolume *vgres1 = new TGeoVolume("TPC_GRES1",gres1,m10);
1322 xrc=79.3*TMath::Cos(350.*TMath::DegToRad());
1323 yrc=79.3*TMath::Sin(350.*TMath::DegToRad());
1325 v9->AddNode(vgres1,1,new TGeoTranslation(xrc,yrc,126.9));
1326 v9->AddNode(vgres1,2,new TGeoTranslation(xrc,yrc,-126.9));
1328 xrc=79.3*TMath::Cos(190.*TMath::DegToRad());
1329 yrc=79.3*TMath::Sin(190.*TMath::DegToRad());
1331 v9->AddNode(vgres1,3,new TGeoTranslation(xrc,yrc,126.9));
1332 v9->AddNode(vgres1,4,new TGeoTranslation(xrc,yrc,-126.9));
1333 //------------------------------------------------------------------
1334 TGeoRotation refl("refl",90.,0.,90.,90.,180.,0.);
1335 TGeoRotation rotrod("rotrod");
1337 TGeoRotation *rotpos[2];
1339 TGeoRotation *rotrod1[2];
1340 TGeoTubeSeg *irh = new TGeoTubeSeg(78.825,79.25,1.5,358.5,1.5);
1341 TGeoTubeSeg *orh = new TGeoTubeSeg(256.5,257.95,1.5,359.5,0.5);
1342 TGeoTubeSeg *ohh = new TGeoTubeSeg(256.5,257.95,1.5,9.5,10.5);
1343 TGeoVolume *irhv = new TGeoVolume("TPC_IRHH",irh,m4);
1344 TGeoVolume *orhv = new TGeoVolume("TPC_ORHH",orh,m4);
1345 TGeoVolume *ohhv = new TGeoVolume("TPC_OHVHH",ohh,m4);
1349 for(Int_t i=0;i<18;i++){
1352 angle=TMath::DegToRad()*20.*(Double_t)i;
1353 TGeoRotation *roth = new TGeoRotation(); //rotation for rod holders
1354 roth->RotateZ(angle);
1357 x=r * TMath::Cos(angle);
1358 y=r * TMath::Sin(angle);
1361 v9->AddNode(irhv,i+1,roth);
1362 v9->AddNode(orhv,i+1,roth);
1363 v9->AddNode(ohhv,i+1,roth);
1365 if(i==11){//resistor rod inner
1366 rotrod.RotateZ(-90.+angle);
1367 rotrod1[0]= new TGeoRotation();
1368 rotpos[0]= new TGeoRotation();
1370 rotrod1[0]->RotateZ(-90.+angle);
1371 *rotpos[0] = refl*rotrod; //rotation+reflection
1372 v9->AddNode(tpcrrod,1,new TGeoCombiTrans(x,y, z, rotrod1[0])); //A
1373 v9->AddNode(tpcrrod,2,new TGeoCombiTrans(x,y,-z, rotpos[0])); //C
1376 v9->AddNode(tpcmrod,i+1,new TGeoTranslation(x,y,z));//shaft
1377 v9->AddNode(tpcmrod,i+19,new TGeoCombiTrans(x,y,-z,ref));//muon
1381 x=r * TMath::Cos(angle);
1382 y=r * TMath::Sin(angle);
1385 if(i==3){//resistor rod outer
1386 rotrod.RotateZ(90.+angle);
1387 rotrod1[1]= new TGeoRotation();
1388 rotpos[1]= new TGeoRotation();
1389 rotrod1[1]->RotateZ(90.+angle);
1390 *rotpos[1] = refl*rotrod;//rotation+reflection
1391 v9->AddNode(tpcrrod,3,new TGeoCombiTrans(x,y, z, rotrod1[1])); //A
1392 v9->AddNode(tpcrrod,4,new TGeoCombiTrans(x,y, -z, rotpos[1])); //C
1395 v9->AddNode(tpcmrod,i+37,new TGeoTranslation(x,y,z));//shaft
1396 v9->AddNode(tpcmrod,i+55,new TGeoCombiTrans(x,y,-z,ref));//muon
1399 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z+0.7)); //hv->A-side only
1401 } //end of rods positioning
1403 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
1404 alice->AddNode(v1,1);
1406 } // end of function
1408 //_____________________________________________________________________________
1409 void AliTPCv2::AddAlignableVolumes() const
1412 // Create entries for alignable volumes associating the symbolic volume
1413 // name with the corresponding volume path. Needs to be syncronized with
1414 // eventual changes in the geometry.
1416 SetInnerChambersAlignable();
1417 SetOuterChambersAlignable();
1420 //_____________________________________________________________________________
1421 void AliTPCv2::SetInnerChambersAlignable() const
1424 AliGeomManager::ELayerID idTPC1 = AliGeomManager::kTPC1;
1425 Int_t modUID, modnum = 0;
1426 TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_";
1427 TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_";
1428 TString vpappend = "/TPC_IROC_1";
1429 TString snstr1="TPC/EndcapA/Sector";
1430 TString snstr2="TPC/EndcapC/Sector";
1431 TString snappend="/InnerChamber";
1432 TString volpath, symname;
1434 for(Int_t cnt=1; cnt<=18; cnt++){
1435 modUID = AliGeomManager::LayerToVolUID(idTPC1,modnum++);
1438 volpath += vpappend;
1441 symname += snappend;
1442 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
1443 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
1444 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
1445 TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
1446 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,cnt-1);
1447 alignableEntry->SetMatrix(matTtoL);
1450 for(Int_t cnt=1; cnt<=18; cnt++){
1451 modUID = AliGeomManager::LayerToVolUID(idTPC1,modnum++);
1454 volpath += vpappend;
1457 symname += snappend;
1458 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
1459 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
1460 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
1461 TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
1462 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,18+cnt-1);
1463 alignableEntry->SetMatrix(matTtoL);
1467 //_____________________________________________________________________________
1468 void AliTPCv2::SetOuterChambersAlignable() const
1471 AliGeomManager::ELayerID idTPC2 = AliGeomManager::kTPC2;
1472 Int_t modUID, modnum = 0;
1473 TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_";
1474 TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_";
1475 TString vpappend = "/TPC_OROC_1";
1476 TString snstr1="TPC/EndcapA/Sector";
1477 TString snstr2="TPC/EndcapC/Sector";
1478 TString snappend="/OuterChamber";
1479 TString volpath, symname;
1481 for(Int_t cnt=1; cnt<=18; cnt++){
1482 modUID = AliGeomManager::LayerToVolUID(idTPC2,modnum++);
1485 volpath += vpappend;
1488 symname += snappend;
1489 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
1490 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
1491 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
1492 TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
1493 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+cnt-1);
1494 alignableEntry->SetMatrix(matTtoL);
1497 for(Int_t cnt=1; cnt<=18; cnt++){
1498 modUID = AliGeomManager::LayerToVolUID(idTPC2,modnum++);
1501 volpath += vpappend;
1504 symname += snappend;
1505 if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data(),modUID))
1506 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data()));
1507 TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntryByUID(modUID);
1508 TGeoHMatrix* globMatrix = alignableEntry->GetGlobalOrig();
1509 TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+18+cnt-1);
1510 alignableEntry->SetMatrix(matTtoL);
1514 //_____________________________________________________________________________
1515 void AliTPCv2::DrawDetector() const
1518 // Draw a shaded view of the Time Projection Chamber version 1
1521 // Set everything unseen
1522 gMC->Gsatt("*", "seen", -1);
1524 // Set ALIC mother transparent
1525 gMC->Gsatt("ALIC","SEEN",0);
1527 // Set the volumes visible
1530 gMC->Gsatt("TPC ","SEEN",0);
1531 gMC->Gsatt("TOIN","SEEN",1);
1532 gMC->Gsatt("TOIN","COLO",7);
1533 gMC->Gsatt("TOCV","SEEN",1);
1534 gMC->Gsatt("TOCV","COLO",4);
1535 gMC->Gsatt("TSA1","SEEN",0);
1536 gMC->Gsatt("TSA2","SEEN",0);
1537 gMC->Gsatt("TSA3","SEEN",0);
1538 gMC->Gsatt("TSA4","SEEN",0);
1539 gMC->Gsatt("TSA5","SEEN",0);
1540 gMC->Gsatt("TOFC","SEEN",1);
1541 gMC->Gsatt("TOFC","COLO",4);
1542 gMC->Gsatt("TSA6","SEEN",0);
1543 gMC->Gsatt("TSA7","SEEN",0);
1544 gMC->Gsatt("TSA8","SEEN",0);
1545 gMC->Gsatt("TIIN","SEEN",1);
1546 gMC->Gsatt("TIIN","COLO",7);
1547 gMC->Gsatt("TII1","SEEN",0);
1548 gMC->Gsatt("TIFC","SEEN",1);
1549 gMC->Gsatt("TIFC","COLO",4);
1550 gMC->Gsatt("TSA9","SEEN",0);
1551 gMC->Gsatt("TS10","SEEN",0);
1552 gMC->Gsatt("TS11","SEEN",0);
1553 gMC->Gsatt("TS12","SEEN",0);
1554 gMC->Gsatt("TS13","SEEN",0);
1555 gMC->Gsatt("TS14","SEEN",0);
1556 gMC->Gsatt("TICC","SEEN",0);
1557 gMC->Gsatt("TICM","SEEN",0);
1558 gMC->Gsatt("TS15","SEEN",0);
1559 gMC->Gsatt("TS16","SEEN",0);
1560 gMC->Gsatt("TS17","SEEN",0);
1561 gMC->Gsatt("TS18","SEEN",0);
1562 gMC->Gsatt("TS19","SEEN",0);
1563 gMC->Gsatt("TPJ1","SEEN",0);
1564 gMC->Gsatt("TPJ2","SEEN",0);
1565 gMC->Gsatt("TICS","SEEN",0);
1566 gMC->Gsatt("TDGN","SEEN",0);
1567 gMC->Gsatt("TIRC","SEEN",0);
1568 gMC->Gsatt("TIC1","SEEN",1);
1569 gMC->Gsatt("TIPP","SEEN",0);
1570 gMC->Gsatt("TIC3","SEEN",0);
1571 gMC->Gsatt("TRCE","SEEN",0);
1572 gMC->Gsatt("TPSC","SEEN",0);
1573 gMC->Gsatt("TPCC","SEEN",0);
1574 gMC->Gsatt("TORC","SEEN",0);
1575 gMC->Gsatt("TOPP","SEEN",0);
1576 gMC->Gsatt("TOC3","SEEN",0);
1577 gMC->Gsatt("TOC1","SEEN",1);
1578 gMC->Gsatt("TSSW","SEEN",1);
1579 gMC->Gsatt("TSWC","SEEN",1);
1580 gMC->Gsatt("TSSW","COLO",3);
1581 gMC->Gsatt("TSWC","COLO",3);
1582 gMC->Gsatt("TSCE","COLO",6);
1583 gMC->Gsatt("TSCE","SEEN",1);
1584 gMC->Gsatt("TWES","SEEN",0);
1585 gMC->Gsatt("TSWB","SEEN",0);
1586 gMC->Gsatt("TPEL","SEEN",0);
1587 gMC->Gsatt("TPMW","SEEN",1);
1588 gMC->Gsatt("TESR","SEEN",1);
1589 gMC->Gsatt("TPMW","COLO",12);
1590 gMC->Gsatt("TIC1","COLO",5);
1591 gMC->Gsatt("TOC1","COLO",5);
1592 gMC->Gsatt("TESB","SEEN",0);
1593 gMC->Gsatt("THVM","SEEN",1);
1594 gMC->Gsatt("THVM","COLO",11);
1595 gMC->Gsatt("THVH","SEEN",0);
1596 gMC->Gsatt("TPSR","SEEN",0);
1597 gMC->Gsatt("THVL","SEEN",0);
1598 gMC->Gsatt("THVC","SEEN",0);
1599 gMC->Gsatt("THVE","SEEN",0);
1600 gMC->Gsatt("THVR","SEEN",0);
1601 gMC->Gsatt("TPSS","SEEN",0);
1602 gMC->Gsatt("TPUS","SEEN",0);
1603 gMC->Gsatt("TPLS","SEEN",0);
1606 gMC->Gdopt("hide", "on");
1607 gMC->Gdopt("shad", "on");
1608 gMC->Gsatt("*", "fill", 7);
1609 gMC->SetClipBox(".");
1610 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1611 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1612 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1613 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1614 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1615 gMC->DefaultRange();
1616 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1617 gMC->Gdhead(1111, "Time Projection Chamber");
1618 gMC->Gdman(18, 4, "MAN");
1619 gMC->Gdopt("hide","off");
1622 //_____________________________________________________________________________
1623 void AliTPCv2::CreateMaterials()
1626 // Define materials for version 2 of the Time Projection Chamber
1629 AliTPC::CreateMaterials();
1632 //_____________________________________________________________________________
1633 void AliTPCv2::Init()
1636 // Initialises version 2 of the TPC after that it has been built
1639 Int_t *idtmed = fIdtmed->GetArray();
1644 fIdSens=gMC->VolId("TPC_Strip"); // one strip is always selected...
1646 fIDrift=gMC->VolId("TPC_Drift");
1647 fSecOld=-100; // fake number
1649 gMC->SetMaxNStep(-30000); // max. number of steps increased
1651 if (fPrimaryIonisation) {
1653 gMC->Gstpar(idtmed[2],"PRIMIO_E", 20.77); // 1st ionisation potential
1655 gMC->Gstpar(idtmed[2],"PRIMIO_N", 14.35);
1656 gMC->Gstpar(idtmed[2],"LOSS", 14); // specific energy loss
1657 gMC->Gstpar(idtmed[2],"STRA",4);
1659 // specific energy loss for geant3 is now defined in galice.cuts
1662 AliDebug(1,"*** TPC version 2 initialized ***");
1663 AliDebug(1,Form("Maximum number of steps = %d",gMC->GetMaxNStep()));
1669 //_____________________________________________________________________________
1670 void AliTPCv2::StepManager()
1673 // Called for every step in the Time Projection Chamber
1677 // parameters used for the energy loss calculations
1679 const Float_t kprim = 14.35; // number of primary collisions per 1 cm
1680 const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2
1681 const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation
1682 const Int_t kMaxDistRef =15; // maximal difference between 2 stored references
1684 const Float_t kbig = 1.e10;
1691 vol[1]=0; // preset row number to 0
1693 if (!fPrimaryIonisation) gMC->SetMaxStep(kbig);
1695 if(!gMC->IsTrackAlive()) return; // particle has disappeared
1697 Float_t charge = gMC->TrackCharge();
1699 if(TMath::Abs(charge)<=0.) return; // take only charged particles
1701 // check the sensitive volume
1703 id = gMC->CurrentVolID(copy); // vol ID and copy number (starts from 1!)
1704 if(id != fIDrift && id != fIdSens) return; // not in the sensitive folume
1706 gMC->TrackPosition(p);
1707 Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1711 Double_t angle = TMath::ACos(p[0]/r);
1712 angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle;
1714 // angular segment, it is not a real sector number...
1716 Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/
1717 fTPCParam->GetInnerAngle());
1718 // rotate to segment "0"
1720 fTPCParam->AdjustCosSin(sector,cos,sin);
1721 Float_t x1=p[0]*cos + p[1]*sin;
1722 // check if within sector's limits
1723 if((x1>=fTPCParam->GetInnerRadiusLow()&&x1<=fTPCParam->GetInnerRadiusUp())
1724 ||(x1>=fTPCParam->GetOuterRadiusLow()&&x1<=fTPCParam->GetOuterRadiusUp())){
1725 // calculate real sector number...
1726 if (x1>fTPCParam->GetOuterRadiusLow()){
1727 sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/
1728 fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector();
1729 if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1);
1732 if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1);
1734 // here I have a sector number
1739 static Double_t lastReferenceR=0;
1740 if (TMath::Abs(lastReferenceR-r)>kMaxDistRef){
1741 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTPC);
1745 // check if change of sector
1746 if(sector != fSecOld){
1748 // add track reference
1749 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTPC);
1751 // track is in the sensitive strip
1753 // track is entering the strip
1754 if (gMC->IsTrackEntering()){
1755 Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp();
1756 vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows;
1757 // row numbers are autonomous for lower and upper sectors
1758 if(vol[0] > fTPCParam->GetNInnerSector()) {
1759 vol[1] -= fTPCParam->GetNRowLow();
1762 if(vol[0]<fTPCParam->GetNInnerSector()&&vol[1] == 0){
1764 // lower sector, row 0, because Jouri wants to have this
1766 gMC->TrackMomentum(p);
1770 hits[3]=0.; // this hit has no energy loss
1771 // Get also the track time for pileup simulation
1772 hits[4]=gMC->TrackTime();
1774 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1778 gMC->TrackPosition(p);
1782 hits[3]=0.; // this hit has no energy loss
1783 // Get also the track time for pileup simulation
1784 hits[4]=gMC->TrackTime();
1786 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1791 //-----------------------------------------------------------------
1792 // charged particle is in the sensitive drift volume
1793 //-----------------------------------------------------------------
1794 if(gMC->TrackStep() > 0) {
1796 if (!fPrimaryIonisation) {
1797 nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1;
1800 Float_t edep = gMC->Edep();
1801 if (edep > 0.) nel = (Int_t)((gMC->Edep()*1.5)/kwIon) + 1;
1803 nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV
1805 gMC->TrackPosition(p);
1809 hits[3]=(Float_t)nel;
1814 gMC->TrackMomentum(p);
1815 Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]);
1816 Float_t precision = (momentum>0.1) ? 0.002 :0.01;
1817 fTrackHits->SetHitPrecision(precision);
1820 // Get also the track time for pileup simulation
1821 hits[4]=gMC->TrackTime();
1823 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits);
1824 if (fDebugStreamer){
1825 // You can dump here what you need
1826 // function CreateDebugStremer() to be called in the Config.C macro
1827 // if you want to enable it
1828 // By default debug streaemer is OFF
1829 Float_t edep = gMC->Edep();
1830 Float_t tstep = gMC->TrackStep();
1831 Int_t pid=gMC->TrackPid();
1832 (*fDebugStreamer)<<"hit"<<
1833 "x="<<hits[0]<< // hit position
1836 "nel="<<hits[3]<< // number of electorns
1837 "tof="<<hits[4]<< // hit TOF
1838 "edep="<<edep<< // energy deposit
1839 "pid="<<pid<< // pid
1846 } //within sector's limits
1847 // Stemax calculation for the next step
1851 // below is valid only for Geant3 (fPromaryIonisation not set)
1852 if(!fPrimaryIonisation){
1853 gMC->TrackMomentum(mom);
1854 Float_t ptot=mom.Rho();
1855 Float_t betaGamma = ptot/gMC->TrackMass();
1857 Int_t pid=gMC->TrackPid();
1858 if((pid==kElectron || pid==kPositron) && ptot > 0.002)
1860 pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau!
1865 betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg
1866 pp=kprim*AliMathBase::BetheBlochAleph(betaGamma);
1870 Double_t rnd = gMC->GetRandom()->Rndm();
1872 gMC->SetMaxStep(-TMath::Log(rnd)/pp);