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 0 -- "coarse" TPC //
25 <img src="picts/AliTPCv0Class.gif">
30 ///////////////////////////////////////////////////////////////////////////////
32 #include <Riostream.h>
34 #include <TGeometry.h>
38 #include <TVirtualMC.h>
44 #include "AliTPCDigitsArray.h"
45 #include "AliTPCParamSR.h"
47 #include "TGeoManager.h"
48 #include "TGeoVolume.h"
53 #include "TGeoCompositeShape.h"
57 //_____________________________________________________________________________
58 AliTPCv0::AliTPCv0(const char *name, const char *title)
62 // Standard creator for TPC version 0
67 fTPCParam->Write(fTPCParam->GetTitle());
70 //_____________________________________________________________________________
71 void AliTPCv0::CreateGeometry()
75 // Creation of the TPC version 0, i.e. no sensitive volumes,
76 // only the material distribution
80 <img src="picts/AliTPC.gif">
85 <img src="picts/AliTPCv0Tree.gif">
89 //----------------------------------------------------------
90 // This geometry is written using TGeo class
91 // Firstly the shapes are defined, and only then the volumes
92 // What is recognized by the MC are volumes
93 //----------------------------------------------------------
95 // tpc - this will be the mother volume
99 // here I define a volume TPC
100 // retrive the medium name with "TPC_" as a leading string
102 TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections
103 tpc->DefineSection(0,-290.,77.,278.);
104 tpc->DefineSection(1,-259.6,70.,278.);
106 tpc->DefineSection(2,-259.6,68.1,278.);
107 tpc->DefineSection(3,-253.6,68.1,278.);
109 tpc->DefineSection(4,-253.6,68.,278.);
110 tpc->DefineSection(5,-74.0,60.8,278.);
112 tpc->DefineSection(6,-74.0,60.1,278.);
113 tpc->DefineSection(7,-73.3,60.1,278.);
115 tpc->DefineSection(8,-73.3,56.9,278.);
116 tpc->DefineSection(9,73.3,56.9,278.);
118 tpc->DefineSection(10,73.3,60.1,278.);
119 tpc->DefineSection(11,74.0,60.1,278.);
121 tpc->DefineSection(12,74.0,60.8,278.);
122 tpc->DefineSection(13,253.6,65.5,278.);
124 tpc->DefineSection(14,253.6,65.6,278.);
125 tpc->DefineSection(15,259.6,65.6,278.);
127 tpc->DefineSection(16,259.6,70.0,278.);
128 tpc->DefineSection(17,290.,77.,278.);
130 TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air");
131 TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1);
133 // drift volume - sensitive volume, extended beyond the
134 // endcaps, because of the alignment
136 TGeoPcon *dvol = new TGeoPcon(0.,360.,6);
137 dvol->DefineSection(0,-260.,74.5,264.4);
138 dvol->DefineSection(1,-253.6,74.5,264.4);
140 dvol->DefineSection(2,-253.6,76.6774,258.);
141 dvol->DefineSection(3,253.6,76.6774,258.);
143 dvol->DefineSection(4,253.6,74.5,264.4);
144 dvol->DefineSection(5,260.,74.5,264.4);
146 TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-1");
147 TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5);
153 TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator
155 tpco->DefineSection(0,-256.6,264.8,278.);
156 tpco->DefineSection(1,-253.6,264.8,278.);
158 tpco->DefineSection(2,-253.6,258.,278.);
159 tpco->DefineSection(3,250.6,258.,278.);
161 tpco->DefineSection(4,250.6,258.,275.5);
162 tpco->DefineSection(5,253.6,258.,275.5);
164 TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2");
165 TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2);
167 // outer containment vessel
169 TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel
171 tocv->DefineSection(0,-256.6,264.8,278.);
172 tocv->DefineSection(1,-253.6,264.8,278.);
174 tocv->DefineSection(2,-253.6,274.8124,278.);
175 tocv->DefineSection(3,247.6,274.8124,278.);
177 tocv->DefineSection(4,247.6,270.4,278.);
178 tocv->DefineSection(5,250.6,270.4,278.);
180 TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al");
181 TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3);
183 TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy
184 TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar
185 TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2
186 TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex
188 TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy");
189 TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar");
190 TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2");
191 TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex");
193 TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1);
194 TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2);
195 TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3);
196 TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4);
197 //-------------------------------------------------------
198 // Tpc Outer Field Cage
199 // daughters - composite (sandwich)
200 //-------------------------------------------------------
202 TGeoPcon *tofc = new TGeoPcon(0.,360.,6);
204 tofc->DefineSection(0,-253.6,258.,269.6);
205 tofc->DefineSection(1,-250.6,258.,269.6);
207 tofc->DefineSection(2,-250.6,258.,260.0676);
208 tofc->DefineSection(3,250.6,258.,260.0676);
210 tofc->DefineSection(4,250.6,258.,275.5);
211 tofc->DefineSection(5,253.6,258.,275.5);
213 TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3);
215 TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar
216 TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3
217 TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex
219 TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3");
221 TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2);
222 TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5);
223 TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4);
225 // outer part - positioning
227 tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1);
229 tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1);
231 v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1);
233 v2->AddNode(v3,1); v2->AddNode(v4,1);
236 //-----------------------------------------------------------
237 //--------------------------------------------------------------------
238 // Tpc Inner INsulator (CO2)
239 // the cones, the central drum and the inner f.c. sandwich with a piece
240 // of the flane will be placed in the TPC
241 //--------------------------------------------------------------------
242 TGeoPcon *tpci = new TGeoPcon(0.,360.,4);
244 tpci->DefineSection(0,-253.6,68.4,76.6774);
245 tpci->DefineSection(1,-74.0,61.2,76.6774);
247 tpci->DefineSection(2,74.0,61.2,76.6774);
249 tpci->DefineSection(3,253.6,65.9,76.6774);
251 TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2);
253 // now the inner field cage - only part of flanges (2 copies)
255 TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5);
256 TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3);
258 //---------------------------------------------------------
259 // Tpc Inner Containment vessel - Muon side
260 //---------------------------------------------------------
261 TGeoPcon *tcms = new TGeoPcon(0.,360.,10);
263 tcms->DefineSection(0,-259.1,68.1,74.2);
264 tcms->DefineSection(1,-253.6,68.1,74.2);
266 tcms->DefineSection(2,-253.6,68.1,68.4);
267 tcms->DefineSection(3,-74.0,60.9,61.2);
269 tcms->DefineSection(4,-74.0,60.1,61.2);
270 tcms->DefineSection(5,-73.3,60.1,61.2);
272 tcms->DefineSection(6,-73.3,56.9,61.2);
273 tcms->DefineSection(7,-73.0,56.9,61.2);
275 tcms->DefineSection(8,-73.0,56.9,58.8);
276 tcms->DefineSection(9,-71.3,56.9,58.8);
278 TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3);
279 //-----------------------------------------------
280 // inner containment vessel - shaft side
281 //-----------------------------------------------
282 TGeoPcon *tcss = new TGeoPcon(0.,360.,10);
284 tcss->DefineSection(0,71.3,56.9,58.8);
285 tcss->DefineSection(1,73.0,56.9,58.8);
287 tcss->DefineSection(2,73.0,56.9,61.2);
288 tcss->DefineSection(3,73.3,56.9,61.2);
290 tcss->DefineSection(4,73.3,60.1,61.2);
291 tcss->DefineSection(5,74.0,60.1,61.2);
293 tcss->DefineSection(6,74.0,60.9,61.2);
294 tcss->DefineSection(7,253.6,65.6,65.9);
296 tcss->DefineSection(8,253.6,65.6,74.2);
297 tcss->DefineSection(9,258.1,65.6,74.2);
299 TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3);
300 //-----------------------------------------------
302 // define 4 parts and make an assembly
303 //-----------------------------------------------
304 // part1 - Al - 2 copies
305 TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75);
306 TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3);
307 // sandwich - outermost parts - 2 copies
308 TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns
309 TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns
310 TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns
311 TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm
313 TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2);
314 TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3);
315 TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5);
316 TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4);
318 // middle parts - 2 copies
319 TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns
320 TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns
321 TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns
322 TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm
324 TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2);
325 TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3);
326 TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5);
327 TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4);
328 // central part - 1 copy
329 TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns
330 TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns
331 TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm
333 TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2);
334 TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5);
335 TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4);
337 // inner part - positioning
339 // creating a sandwich
340 tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1);
342 tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1);
344 tv10->AddNode(tv11,1); tv11->AddNode(tv12,1);
346 TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC");
348 tv100->AddNode(tv10,1);
349 tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75));
350 tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75));
351 tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925));
352 tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925));
353 tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85));
354 tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85));
356 v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1));
357 v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1));
358 v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1);
359 v9->AddNode(tv100,1);
365 TGeoPcon *cfl = new TGeoPcon(0.,360.,6);
366 cfl->DefineSection(0,-71.1,59.7,61.2);
367 cfl->DefineSection(1,-68.6,59.7,61.2);
369 cfl->DefineSection(2,-68.6,60.6324,61.2);
370 cfl->DefineSection(3,68.6,60.6324,61.2);
372 cfl->DefineSection(4,68.6,59.7,61.2);
373 cfl->DefineSection(5,71.1,59.7,61.2);
375 TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3);
377 TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1);
378 TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1);
379 TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1);
381 TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1");
382 TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar
383 TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1
384 TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex
386 // seals for central drum 2 copies
388 TGeoTube *cs = new TGeoTube(56.9,61.2,0.1);
389 TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar");
390 TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7);
391 v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.));
392 v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.));
395 TGeoPcon *se = new TGeoPcon(0.,360.,6);
396 se->DefineSection(0,-72.8,59.7,61.2);
397 se->DefineSection(1,-72.3,59.7,61.2);
399 se->DefineSection(2,-72.3,58.85,61.2);
400 se->DefineSection(3,-71.6,58.85,61.2);
402 se->DefineSection(4,-71.6,59.7,61.2);
403 se->DefineSection(5,-71.3,59.7,61.2);
405 TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3);
407 TGeoTube *si = new TGeoTube(56.9,58.8,1.);
408 TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3);
410 // define reflection matrix
412 TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.);
414 cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1);
416 v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9));
417 v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9));
418 v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1);
420 // central membrane - 2 rings and a mylar membrane - assembly
422 TGeoTube *ih = new TGeoTube(81.05,84.05,0.3);
423 TGeoTube *oh = new TGeoTube(250.,256.,.5);
424 TGeoTube *mem = new TGeoTube(84.05,250,0.01);
425 TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3);
426 TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3);
427 TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7);
429 TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM");
435 // end caps - they are make as an assembly of single segments
436 // containing both readout chambers
438 Double_t openingAngle = 10.*TMath::DegToRad();
439 Double_t thick=1.5; // rib
440 Double_t shift = thick/TMath::Sin(openingAngle);
442 Double_t lowEdge = 86.3; // hole in the wheel
443 Double_t upEdge = 240.4; // hole in the wheel
445 new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.);
447 TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4);
449 hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift);
450 hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift);
452 hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift);
453 hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift);
455 Double_t ys = shift*TMath::Sin(openingAngle);
456 Double_t xs = shift*TMath::Cos(openingAngle);
457 TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.);
458 tr->RegisterYourself();
459 TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr");
460 TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3);
461 TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2);
462 bar->DefineSection(0,-3.,131.5-shift,136.5-shift);
463 bar->DefineSection(1,1.5,131.5-shift,136.5-shift);
464 TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3);
465 TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment
467 ch->AddNode(sv,1); ch->AddNode(barv,1,tr);
473 TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15);
474 TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3);
476 TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65);
477 TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1);
478 ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.));
480 Double_t tga = (19.8328-12.3742)/39.3;
482 xmin = 9.55*tga+12.3742;
483 xmax = 9.95*tga+12.3742;
484 TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2);
485 TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3);
486 empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9));
487 xmin=19.4*tga+12.3742;
488 xmax=19.9*tga+12.3742;
489 TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25);
490 TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3);
491 empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.));
492 xmin=29.35*tga+12.3742;
493 xmax=29.75*tga+12.3742;
494 TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2);
495 TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3);
496 empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9));
498 // holes for connectors
500 TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc
501 TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1);
502 TString fileName(gSystem->Getenv("ALICE_ROOT"));
503 fileName += "/TPC/conn_iroc.dat";
505 in.open(fileName.Data(), ios_base::in); // asci file
506 for(Int_t i =0;i<86;i++){
511 TGeoRotation *rrr = new TGeoRotation();
513 TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr);
514 ibdv->AddNode(connv,i+1,trans);
518 new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825);
520 new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15);
521 TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725);
522 tr1->RegisterYourself();
523 TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1");
524 TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3);
526 // pad plane and wire fixations
528 TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso
529 TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10");
530 TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4);
531 TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.);
532 TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4);
533 TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.);
534 TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4);
536 TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC");
538 iroc->AddNode(ibdv,1);
539 iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725));
540 iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725));
541 tga =(23.3521-14.5974)/49.65;
542 Double_t xx = 24.825*tga+14.5974-0.6;
543 iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725));
544 iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725));
548 TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65);
549 TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3);
550 TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65);
551 TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1);
552 obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.));
554 tga=(38.5084-20.2938)/99.3;
555 xmin=tga*10.2+20.2938;
556 xmax=tga*10.6+20.2938;
557 TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2);
558 TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3);
560 xmin=22.55*tga+20.2938;
561 xmax=24.15*tga+20.2938;
562 TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8);
563 TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3);
565 xmin=36.1*tga+20.2938;
566 xmax=36.5*tga+20.2938;
567 TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2);
568 TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3);
570 xmin=49.0*tga+20.2938;
571 xmax=50.6*tga+20.2938;
572 TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8);
573 TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3);
575 xmin=63.6*tga+20.2938;
576 xmax=64.0*tga+20.2938;
577 TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2);
578 TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3);
580 xmin=75.5*tga+20.2938;
581 xmax=77.15*tga+20.2938;
582 TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8);
583 TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3);
585 xmin=88.7*tga+20.2938;
586 xmax=89.1*tga+20.2938;
587 TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2);
588 TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3);
590 oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25));
591 oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3));
592 oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35));
593 oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15));
594 oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15));
595 oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7));
596 oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25));
598 TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1);
599 TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975);
600 TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775);
601 TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25);
602 TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5);
604 TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3);
605 TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3);
606 TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3);
607 TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3);
608 TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3);
610 oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55));
611 oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55));
612 oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075));
613 oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525));
614 oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125));
615 oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275));
616 oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9));
617 oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45));
619 // holes for connectors
621 fileName = gSystem->Getenv("ALICE_ROOT");
622 fileName += "/TPC/conn_oroc.dat";
623 in.open(fileName.Data(), ios_base::in); // asci file
624 for(Int_t i =0;i<78;i++){
627 Double_t x1,z1,x2,z2;
629 Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad());
630 Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad());
632 x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z;
634 TGeoRotation *rr = new TGeoRotation();
638 TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr);
639 TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr);
640 obdv->AddNode(connv,i+1,trans1);
641 obdv->AddNode(connv,i+79,trans2);
645 new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1);
646 new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65);
647 TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15);
648 tr5->RegisterYourself();
649 TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5");
650 TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3);
652 // pad plane and wire fixations
654 TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1);
655 TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4);
657 tga=(43.5239-23.3874)/114.2;
658 TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.);
659 TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.);
660 xx = 57.1*tga+23.3874-0.7;
661 TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4);
662 TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4);
664 TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC");
666 oroc->AddNode(obdv,1);
667 oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15));
668 oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15));
669 oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15));
670 oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15));
672 // now iroc and oroc are placed into a sector...
674 TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side
675 TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side
678 TGeoRotation rot1("rot1",90.,90.,0.);
679 TGeoRotation rot2("rot2");
681 TGeoRotation *rot = new TGeoRotation("rot");
685 x0=110.2*TMath::Cos(openingAngle);
686 y0=110.2*TMath::Sin(openingAngle);
687 TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side
688 TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side
689 x0=188.45*TMath::Cos(openingAngle);
690 y0=188.45*TMath::Sin(openingAngle);
691 TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side
692 TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side
696 secta->AddNode(ch,1);
697 secta->AddNode(iroc,1,combi1a);
698 secta->AddNode(oroc,1,combi2a);
702 sectc->AddNode(ch,1);
703 sectc->AddNode(iroc,1,combi1c);
704 sectc->AddNode(oroc,1,combi2c);
706 // now I try to make wheels...
708 TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP");
709 TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP");
711 for(Int_t i =0;i<18;i++){
712 Double_t phi = (20.*i);
713 TGeoRotation *r = new TGeoRotation();
715 wheela->AddNode(secta,i+1,r);
716 wheelc->AddNode(sectc,i+1,r);
718 // wheels in the drift volume!
719 TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref);
720 v9->AddNode(wheela,1,combi3);
721 v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6));
722 //_____________________________________________________________
723 // service support wheel
724 //_____________________________________________________________
725 TGeoPgon *sw = new TGeoPgon(0.,20.,1,2);
726 sw->DefineSection(0,-4.,80.5,251.75);
727 sw->DefineSection(1,4.,80.5,251.75);
728 TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al
731 shift = thick/TMath::Sin(openingAngle);
732 TGeoPgon *sh = new TGeoPgon(0.,20.,1,2);
733 sh->DefineSection(0,-4.,81.5-shift,250.75-shift);
734 sh->DefineSection(1,4.,81.5-shift,250.75-shift);
735 TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air
737 TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si");
738 TGeoPgon *el = new TGeoPgon(0.,20.,1,2);
739 el->DefineSection(0,-1.872,81.5-shift,250.75-shift);
740 el->DefineSection(1,1.872,81.5-shift,250.75-shift);
741 TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si
746 ys = shift*TMath::Sin(openingAngle);
747 xs = shift*TMath::Cos(openingAngle);
748 swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.));
750 TGeoPgon *co = new TGeoPgon(0.,20.,1,2);
751 co->DefineSection(0,-0.5,77.,255.25);
752 co->DefineSection(1,0.5,77.,255.25);
753 TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al
755 TGeoPgon *coh = new TGeoPgon(0.,20.,1,2);
756 shift=4./TMath::Sin(openingAngle);
757 coh->DefineSection(0,-0.5,85.-shift,247.25-shift);
758 coh->DefineSection(1,0.5,85.-shift,247.25-shift);
760 TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1);
762 ys = shift*TMath::Sin(openingAngle);
763 xs = shift*TMath::Cos(openingAngle);
764 cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.));
766 // Sector as an Assembly
768 TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC");
769 swhs->AddNode(swv,1);
770 swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5));
771 swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5));
773 // SSW as an Assembly of sectors
775 TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL");
776 for(Int_t i =0;i<18;i++){
777 Double_t phi = (20.*i);
778 TGeoRotation *r = new TGeoRotation();
780 swheel->AddNode(swhs,i+1,r);
782 v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6));
783 v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6));
785 //----------------------------------------------------------
786 // TPc Support Rods - MAKROLON
787 //----------------------------------------------------------
788 TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon");
789 TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu");
790 // upper and lower rods differ in length!
793 gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar);
794 upar=new Double_t [3];
799 //HV rods - makrolon + 0.58cm (diameter) Cu
800 TGeoTube *hvr = new TGeoTube(0.,2.2,126.64);
801 TGeoTube *hvc = new TGeoTube(0.,0.29,126.64);
803 TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6);
804 TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7);
805 hvrv->AddNode(hvcv,1);
806 for(Int_t i=0;i<18;i++){
809 angle=TMath::DegToRad()*20.*(Double_t)i;
811 x=r * TMath::Cos(angle);
812 y=r * TMath::Sin(angle);
813 upar[2]=126.64; //lower
816 v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z));
817 v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z));
820 gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft
821 gGeoManager->Node("TPC_Rod",i+18,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon
824 x=r * TMath::Cos(angle);
825 y=r * TMath::Sin(angle);
826 upar[2]=126.54; //upper
828 gGeoManager->Node("TPC_Rod",i+36,"TPC_Drift",x,y,z,0,kTRUE,upar,3);
829 gGeoManager->Node("TPC_Rod",i+54,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);
832 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
833 alice->AddNode(v1,1);
839 //_____________________________________________________________________________
840 void AliTPCv0::CreateMaterials()
843 // Define materials for the TPC
845 AliTPC::CreateMaterials();
848 //_____________________________________________________________________________
849 void AliTPCv0::DrawDetector()
852 // Draw a shaded view of the Time Projection Chamber version 0
855 // Set everything unseen
856 gMC->Gsatt("*", "seen", -1);
858 // Set ALIC mother transparent
859 gMC->Gsatt("ALIC","SEEN",0);
861 // Set the volumes visible
862 gMC->Gsatt("TPC ","SEEN",0);
863 gMC->Gsatt("TOIN","SEEN",1);
864 gMC->Gsatt("TOIN","COLO",7);
865 gMC->Gsatt("TOCV","SEEN",1);
866 gMC->Gsatt("TOCV","COLO",4);
867 gMC->Gsatt("TSA1","SEEN",0);
868 gMC->Gsatt("TSA2","SEEN",0);
869 gMC->Gsatt("TSA3","SEEN",0);
870 gMC->Gsatt("TSA4","SEEN",0);
871 gMC->Gsatt("TSA5","SEEN",0);
872 gMC->Gsatt("TOFC","SEEN",1);
873 gMC->Gsatt("TOFC","COLO",4);
874 gMC->Gsatt("TSA6","SEEN",0);
875 gMC->Gsatt("TSA7","SEEN",0);
876 gMC->Gsatt("TSA8","SEEN",0);
877 gMC->Gsatt("TIIN","SEEN",1);
878 gMC->Gsatt("TIIN","COLO",7);
879 gMC->Gsatt("TII1","SEEN",0);
880 gMC->Gsatt("TIFC","SEEN",1);
881 gMC->Gsatt("TIFC","COLO",4);
882 gMC->Gsatt("TSA9","SEEN",0);
883 gMC->Gsatt("TS10","SEEN",0);
884 gMC->Gsatt("TS11","SEEN",0);
885 gMC->Gsatt("TS12","SEEN",0);
886 gMC->Gsatt("TS13","SEEN",0);
887 gMC->Gsatt("TS14","SEEN",0);
888 gMC->Gsatt("TICC","SEEN",0);
889 gMC->Gsatt("TICM","SEEN",0);
890 gMC->Gsatt("TS15","SEEN",0);
891 gMC->Gsatt("TS16","SEEN",0);
892 gMC->Gsatt("TS17","SEEN",0);
893 gMC->Gsatt("TS18","SEEN",0);
894 gMC->Gsatt("TS19","SEEN",0);
895 gMC->Gsatt("TPJ1","SEEN",0);
896 gMC->Gsatt("TPJ2","SEEN",0);
897 gMC->Gsatt("TICS","SEEN",0);
898 gMC->Gsatt("TDGN","SEEN",0);
899 gMC->Gsatt("TIRC","SEEN",0);
900 gMC->Gsatt("TIC1","SEEN",1);
901 gMC->Gsatt("TIPP","SEEN",0);
902 gMC->Gsatt("TIC3","SEEN",0);
903 gMC->Gsatt("TRCE","SEEN",0);
904 gMC->Gsatt("TPSC","SEEN",0);
905 gMC->Gsatt("TPCC","SEEN",0);
906 gMC->Gsatt("TORC","SEEN",0);
907 gMC->Gsatt("TOPP","SEEN",0);
908 gMC->Gsatt("TOC3","SEEN",0);
909 gMC->Gsatt("TOC1","SEEN",1);
910 gMC->Gsatt("TSSW","SEEN",1);
911 gMC->Gsatt("TSWC","SEEN",1);
912 gMC->Gsatt("TSSW","COLO",3);
913 gMC->Gsatt("TSWC","COLO",3);
914 gMC->Gsatt("TSCE","COLO",6);
915 gMC->Gsatt("TSCE","SEEN",1);
916 gMC->Gsatt("TWES","SEEN",0);
917 gMC->Gsatt("TSWB","SEEN",0);
918 gMC->Gsatt("TPEL","SEEN",0);
919 gMC->Gsatt("TPMW","SEEN",1);
920 gMC->Gsatt("TESR","SEEN",1);
921 gMC->Gsatt("TPMW","COLO",12);
922 gMC->Gsatt("TIC1","COLO",5);
923 gMC->Gsatt("TOC1","COLO",5);
924 gMC->Gsatt("TESB","SEEN",0);
925 gMC->Gsatt("THVM","SEEN",1);
926 gMC->Gsatt("THVM","COLO",11);
927 gMC->Gsatt("THVH","SEEN",0);
928 gMC->Gsatt("TPSR","SEEN",0);
929 gMC->Gsatt("THVL","SEEN",0);
930 gMC->Gsatt("THVC","SEEN",0);
931 gMC->Gsatt("THVE","SEEN",0);
932 gMC->Gsatt("THVR","SEEN",0);
935 gMC->Gdopt("hide", "on");
936 gMC->Gdopt("shad", "on");
937 gMC->Gsatt("*", "fill", 7);
938 gMC->SetClipBox(".");
939 gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
940 gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
941 gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
942 gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
943 gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
945 gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
946 gMC->Gdhead(1111, "Time Projection Chamber");
947 gMC->Gdman(18, 4, "MAN");
948 gMC->Gdopt("hide","off");
951 //_____________________________________________________________________________
952 void AliTPCv0::Init()
955 // Initialise Time Projection Chamber version 0
958 printf("%s: *** TPC version 0 initialized***\n",ClassName());
960 // printf("TPC version 0 initialized\n");
963 //_____________________________________________________________________________
964 void AliTPCv0::StepManager()
967 // Procedure called at each step in the TPC