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4c039060 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
88cb7938 | 16 | /* $Id$ */ |
4c039060 | 17 | |
73042f01 | 18 | // |
fe4da5cc | 19 | /////////////////////////////////////////////////////////////////////////////// |
20 | // // | |
21 | // Time Projection Chamber version 2 -- detailed TPC and slow simulation // | |
22 | // // | |
23 | //Begin_Html | |
24 | /* | |
1439f98e | 25 | <img src="picts/AliTPCv2Class.gif"> |
fe4da5cc | 26 | */ |
27 | //End_Html | |
28 | // // | |
29 | // // | |
30 | /////////////////////////////////////////////////////////////////////////////// | |
116cbefd | 31 | |
d899e254 | 32 | //#include <stdlib.h> |
fe4da5cc | 33 | |
88cb7938 | 34 | #include <TLorentzVector.h> |
116cbefd | 35 | #include <TPDGCode.h> |
d9e80aca | 36 | #include <TString.h> |
f77f13c8 | 37 | #include "AliLog.h" |
e6add757 | 38 | #include "AliTrackReference.h" |
73042f01 | 39 | #include "AliTPCParam.h" |
4ed5dced | 40 | #include "AliTPCTrackHitsV2.h" |
116cbefd | 41 | #include "AliTPCv2.h" |
c1637e41 | 42 | #include "TGeoVolume.h" |
43 | #include "TGeoPcon.h" | |
44 | #include "TGeoTube.h" | |
45 | #include "TGeoPgon.h" | |
46 | #include "TGeoTrd1.h" | |
47 | #include "TGeoCompositeShape.h" | |
48 | #include "TGeoPara.h" | |
1ac29fc4 | 49 | #include "TGeoPhysicalNode.h" |
50 | ||
c1637e41 | 51 | ClassImp(AliTPCv2) |
52 | ||
53 | //_____________________________________________________________________________ | |
54 | AliTPCv2::AliTPCv2(const char *name, const char *title) : | |
e046d791 | 55 | AliTPC(name, title), |
56 | fIdSens(0), | |
57 | fIDrift(0), | |
58 | fSecOld(0) | |
c1637e41 | 59 | { |
60 | // | |
61 | // Standard constructor for Time Projection Chamber version 2 | |
62 | // | |
6a905708 | 63 | |
37831078 | 64 | |
c1637e41 | 65 | SetBufferSize(128000); |
79575d04 | 66 | |
79575d04 | 67 | |
c1637e41 | 68 | if (fTPCParam) |
69 | fTPCParam->Write(fTPCParam->GetTitle()); | |
70 | } | |
71 | ||
72 | //_____________________________________________________________________________ | |
73 | void AliTPCv2::CreateGeometry() | |
74 | { | |
75 | // | |
76 | // Create the geometry of Time Projection Chamber version 2 | |
77 | // | |
78 | //Begin_Html | |
79 | /* | |
80 | <img src="picts/AliTPC.gif"> | |
81 | */ | |
82 | //End_Html | |
83 | //Begin_Html | |
84 | /* | |
85 | <img src="picts/AliTPCv2Tree.gif"> | |
86 | */ | |
87 | //End_Html | |
37831078 | 88 | |
89 | //---------------------------------------------------------- | |
c1637e41 | 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 | |
37831078 | 93 | //---------------------------------------------------------- |
c1637e41 | 94 | // |
95 | // tpc - this will be the mother volume | |
96 | // | |
37831078 | 97 | |
c1637e41 | 98 | // |
99 | // here I define a volume TPC | |
100 | // retrive the medium name with "TPC_" as a leading string | |
101 | // | |
102 | TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections | |
103 | tpc->DefineSection(0,-290.,77.,278.); | |
456cb019 | 104 | tpc->DefineSection(1,-259.6,70.,278.); |
c1637e41 | 105 | // |
106 | tpc->DefineSection(2,-259.6,68.1,278.); | |
107 | tpc->DefineSection(3,-253.6,68.1,278.); | |
108 | // | |
109 | tpc->DefineSection(4,-253.6,68.,278.); | |
110 | tpc->DefineSection(5,-74.0,60.8,278.); | |
111 | // | |
112 | tpc->DefineSection(6,-74.0,60.1,278.); | |
113 | tpc->DefineSection(7,-73.3,60.1,278.); | |
114 | // | |
115 | tpc->DefineSection(8,-73.3,56.9,278.); | |
116 | tpc->DefineSection(9,73.3,56.9,278.); | |
117 | // | |
118 | tpc->DefineSection(10,73.3,60.1,278.); | |
119 | tpc->DefineSection(11,74.0,60.1,278.); | |
120 | // | |
121 | tpc->DefineSection(12,74.0,60.8,278.); | |
122 | tpc->DefineSection(13,253.6,65.5,278.); | |
123 | // | |
124 | tpc->DefineSection(14,253.6,65.6,278.); | |
125 | tpc->DefineSection(15,259.6,65.6,278.); | |
126 | // | |
456cb019 | 127 | tpc->DefineSection(16,259.6,70.0,278.); |
c1637e41 | 128 | tpc->DefineSection(17,290.,77.,278.); |
129 | // | |
130 | TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air"); | |
131 | TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1); | |
132 | // | |
133 | // drift volume - sensitive volume, extended beyond the | |
134 | // endcaps, because of the alignment | |
135 | // | |
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); | |
139 | // | |
140 | dvol->DefineSection(2,-253.6,76.6774,258.); | |
141 | dvol->DefineSection(3,253.6,76.6774,258.); | |
142 | // | |
143 | dvol->DefineSection(4,253.6,74.5,264.4); | |
144 | dvol->DefineSection(5,260.,74.5,264.4); | |
145 | // | |
146 | TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-2"); | |
147 | TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5); | |
148 | // | |
149 | v1->AddNode(v9,1); | |
150 | // | |
151 | // outer insulator | |
152 | // | |
153 | TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator | |
154 | // | |
155 | tpco->DefineSection(0,-256.6,264.8,278.); | |
156 | tpco->DefineSection(1,-253.6,264.8,278.); | |
157 | // | |
158 | tpco->DefineSection(2,-253.6,258.,278.); | |
159 | tpco->DefineSection(3,250.6,258.,278.); | |
160 | // | |
161 | tpco->DefineSection(4,250.6,258.,275.5); | |
162 | tpco->DefineSection(5,253.6,258.,275.5); | |
163 | // | |
164 | TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2"); | |
165 | TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2); | |
166 | // | |
167 | // outer containment vessel | |
168 | // | |
169 | TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel | |
170 | // | |
171 | tocv->DefineSection(0,-256.6,264.8,278.); | |
172 | tocv->DefineSection(1,-253.6,264.8,278.); | |
173 | // | |
174 | tocv->DefineSection(2,-253.6,274.8124,278.); | |
175 | tocv->DefineSection(3,247.6,274.8124,278.); | |
176 | // | |
177 | tocv->DefineSection(4,247.6,270.4,278.); | |
178 | tocv->DefineSection(5,250.6,270.4,278.); | |
179 | // | |
180 | TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al"); | |
181 | TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3); | |
182 | // | |
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 | |
187 | // | |
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"); | |
192 | // | |
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 | //------------------------------------------------------- | |
37831078 | 201 | |
c1637e41 | 202 | TGeoPcon *tofc = new TGeoPcon(0.,360.,6); |
203 | // | |
204 | tofc->DefineSection(0,-253.6,258.,269.6); | |
205 | tofc->DefineSection(1,-250.6,258.,269.6); | |
206 | // | |
207 | tofc->DefineSection(2,-250.6,258.,260.0676); | |
208 | tofc->DefineSection(3,250.6,258.,260.0676); | |
209 | // | |
210 | tofc->DefineSection(4,250.6,258.,275.5); | |
211 | tofc->DefineSection(5,253.6,258.,275.5); | |
212 | // | |
213 | TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3); | |
214 | //sandwich | |
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 | |
218 | // | |
219 | TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3"); | |
220 | // | |
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); | |
224 | // | |
225 | // outer part - positioning | |
226 | // | |
227 | tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1); | |
228 | // | |
229 | tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1); | |
230 | // | |
456cb019 | 231 | v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1); |
c1637e41 | 232 | // |
233 | v2->AddNode(v3,1); v2->AddNode(v4,1); | |
234 | // | |
235 | v1->AddNode(v2,1); | |
236 | //-------------------------------------------------------------------- | |
237 | // Tpc Inner INsulator (CO2) | |
238 | // the cones, the central drum and the inner f.c. sandwich with a piece | |
239 | // of the flane will be placed in the TPC | |
240 | //-------------------------------------------------------------------- | |
241 | TGeoPcon *tpci = new TGeoPcon(0.,360.,4); | |
242 | // | |
243 | tpci->DefineSection(0,-253.6,68.4,76.6774); | |
244 | tpci->DefineSection(1,-74.0,61.2,76.6774); | |
245 | // | |
246 | tpci->DefineSection(2,74.0,61.2,76.6774); | |
247 | // | |
248 | tpci->DefineSection(3,253.6,65.9,76.6774); | |
249 | // | |
250 | TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2); | |
251 | // | |
252 | // now the inner field cage - only part of flanges (2 copies) | |
253 | // | |
254 | TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5); | |
255 | TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3); | |
256 | // | |
257 | //--------------------------------------------------------- | |
258 | // Tpc Inner Containment vessel - Muon side | |
259 | //--------------------------------------------------------- | |
260 | TGeoPcon *tcms = new TGeoPcon(0.,360.,10); | |
261 | // | |
262 | tcms->DefineSection(0,-259.1,68.1,74.2); | |
263 | tcms->DefineSection(1,-253.6,68.1,74.2); | |
264 | // | |
265 | tcms->DefineSection(2,-253.6,68.1,68.4); | |
266 | tcms->DefineSection(3,-74.0,60.9,61.2); | |
267 | // | |
268 | tcms->DefineSection(4,-74.0,60.1,61.2); | |
269 | tcms->DefineSection(5,-73.3,60.1,61.2); | |
270 | // | |
271 | tcms->DefineSection(6,-73.3,56.9,61.2); | |
272 | tcms->DefineSection(7,-73.0,56.9,61.2); | |
273 | // | |
274 | tcms->DefineSection(8,-73.0,56.9,58.8); | |
275 | tcms->DefineSection(9,-71.3,56.9,58.8); | |
276 | // | |
277 | TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3); | |
278 | //----------------------------------------------- | |
279 | // inner containment vessel - shaft side | |
280 | //----------------------------------------------- | |
281 | TGeoPcon *tcss = new TGeoPcon(0.,360.,10); | |
282 | // | |
283 | tcss->DefineSection(0,71.3,56.9,58.8); | |
284 | tcss->DefineSection(1,73.0,56.9,58.8); | |
285 | // | |
286 | tcss->DefineSection(2,73.0,56.9,61.2); | |
287 | tcss->DefineSection(3,73.3,56.9,61.2); | |
288 | // | |
289 | tcss->DefineSection(4,73.3,60.1,61.2); | |
290 | tcss->DefineSection(5,74.0,60.1,61.2); | |
291 | // | |
292 | tcss->DefineSection(6,74.0,60.9,61.2); | |
293 | tcss->DefineSection(7,253.6,65.6,65.9); | |
294 | // | |
295 | tcss->DefineSection(8,253.6,65.6,74.2); | |
296 | tcss->DefineSection(9,258.1,65.6,74.2); | |
297 | // | |
298 | TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3); | |
299 | //----------------------------------------------- | |
300 | // Inner field cage | |
301 | // define 4 parts and make an assembly | |
302 | //----------------------------------------------- | |
303 | // part1 - Al - 2 copies | |
304 | TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75); | |
305 | TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3); | |
306 | // sandwich - outermost parts - 2 copies | |
307 | TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns | |
308 | TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns | |
309 | TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns | |
310 | TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm | |
311 | // | |
312 | TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2); | |
313 | TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3); | |
314 | TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5); | |
315 | TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4); | |
316 | // | |
317 | // middle parts - 2 copies | |
318 | TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns | |
319 | TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns | |
320 | TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns | |
321 | TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm | |
322 | // | |
323 | TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2); | |
324 | TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3); | |
325 | TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5); | |
326 | TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4); | |
327 | // central part - 1 copy | |
328 | TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns | |
329 | TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns | |
330 | TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm | |
331 | // | |
332 | TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2); | |
333 | TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5); | |
334 | TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4); | |
335 | // | |
336 | // inner part - positioning | |
337 | // | |
338 | // creating a sandwich | |
339 | tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1); | |
340 | // | |
341 | tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1); | |
342 | // | |
343 | tv10->AddNode(tv11,1); tv11->AddNode(tv12,1); | |
344 | // | |
345 | TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC"); | |
346 | // | |
347 | tv100->AddNode(tv10,1); | |
348 | tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75)); | |
349 | tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75)); | |
350 | tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925)); | |
351 | tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925)); | |
352 | tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85)); | |
353 | tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85)); | |
354 | // | |
355 | v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1)); | |
356 | v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1)); | |
357 | v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1); | |
358 | v9->AddNode(tv100,1); | |
359 | // | |
360 | // central drum | |
361 | // | |
362 | // flange + sandwich | |
363 | // | |
364 | TGeoPcon *cfl = new TGeoPcon(0.,360.,6); | |
365 | cfl->DefineSection(0,-71.1,59.7,61.2); | |
366 | cfl->DefineSection(1,-68.6,59.7,61.2); | |
367 | // | |
368 | cfl->DefineSection(2,-68.6,60.6324,61.2); | |
369 | cfl->DefineSection(3,68.6,60.6324,61.2); | |
370 | // | |
371 | cfl->DefineSection(4,68.6,59.7,61.2); | |
372 | cfl->DefineSection(5,71.1,59.7,61.2); | |
373 | // | |
374 | TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3); | |
375 | // sandwich | |
376 | TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1); | |
377 | TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1); | |
378 | TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1); | |
379 | // | |
380 | TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1"); | |
381 | TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar | |
382 | TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1 | |
383 | TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex | |
384 | // | |
385 | // seals for central drum 2 copies | |
386 | // | |
387 | TGeoTube *cs = new TGeoTube(56.9,61.2,0.1); | |
388 | TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar"); | |
389 | TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7); | |
390 | v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.)); | |
391 | v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.)); | |
392 | // | |
393 | // seal collars | |
394 | TGeoPcon *se = new TGeoPcon(0.,360.,6); | |
395 | se->DefineSection(0,-72.8,59.7,61.2); | |
396 | se->DefineSection(1,-72.3,59.7,61.2); | |
397 | // | |
398 | se->DefineSection(2,-72.3,58.85,61.2); | |
399 | se->DefineSection(3,-71.6,58.85,61.2); | |
400 | // | |
401 | se->DefineSection(4,-71.6,59.7,61.2); | |
402 | se->DefineSection(5,-71.3,59.7,61.2); | |
403 | // | |
404 | TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3); | |
405 | // | |
406 | TGeoTube *si = new TGeoTube(56.9,58.8,1.); | |
407 | TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3); | |
408 | // | |
409 | // define reflection matrix | |
410 | // | |
4fa47888 | 411 | TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.); |
c1637e41 | 412 | // |
413 | cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1); | |
414 | // | |
a1ec4d07 | 415 | v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9)); |
416 | v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9)); | |
c1637e41 | 417 | v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1); |
418 | // | |
419 | // central membrane - 2 rings and a mylar membrane - assembly | |
420 | // | |
421 | TGeoTube *ih = new TGeoTube(81.05,84.05,0.3); | |
422 | TGeoTube *oh = new TGeoTube(250.,256.,.5); | |
423 | TGeoTube *mem = new TGeoTube(84.05,250,0.01); | |
424 | TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3); | |
425 | TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3); | |
426 | TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7); | |
427 | // | |
428 | TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM"); | |
429 | cm->AddNode(ihv,1); | |
430 | cm->AddNode(ohv,1); | |
431 | cm->AddNode(memv,1); | |
432 | v9->AddNode(cm,1); | |
433 | // | |
434 | // end caps - they are make as an assembly of single segments | |
435 | // containing both readout chambers | |
436 | // | |
d899e254 | 437 | Double_t openingAngle = 10.*TMath::DegToRad(); |
c1637e41 | 438 | Double_t thick=1.5; // rib |
d899e254 | 439 | Double_t shift = thick/TMath::Sin(openingAngle); |
c1637e41 | 440 | // |
d899e254 | 441 | Double_t lowEdge = 86.3; // hole in the wheel |
442 | Double_t upEdge = 240.4; // hole in the wheel | |
c1637e41 | 443 | // |
444 | new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.); | |
445 | // | |
446 | TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4); | |
447 | // | |
d899e254 | 448 | hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift); |
449 | hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift); | |
c1637e41 | 450 | // |
d899e254 | 451 | hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift); |
452 | hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift); | |
c1637e41 | 453 | // |
d899e254 | 454 | Double_t ys = shift*TMath::Sin(openingAngle); |
455 | Double_t xs = shift*TMath::Cos(openingAngle); | |
c1637e41 | 456 | TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.); |
457 | tr->RegisterYourself(); | |
458 | TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr"); | |
459 | TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3); | |
460 | TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2); | |
461 | bar->DefineSection(0,-3.,131.5-shift,136.5-shift); | |
462 | bar->DefineSection(1,1.5,131.5-shift,136.5-shift); | |
463 | TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3); | |
464 | TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment | |
465 | // | |
466 | ch->AddNode(sv,1); ch->AddNode(barv,1,tr); | |
467 | // | |
468 | // readout chambers | |
469 | // | |
470 | // IROC first | |
471 | // | |
472 | TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15); | |
473 | TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3); | |
474 | // empty space | |
475 | TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65); | |
476 | TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1); | |
477 | ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.)); | |
478 | //bars | |
479 | Double_t tga = (19.8328-12.3742)/39.3; | |
480 | Double_t xmin,xmax; | |
481 | xmin = 9.55*tga+12.3742; | |
482 | xmax = 9.95*tga+12.3742; | |
483 | TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2); | |
484 | TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3); | |
485 | empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9)); | |
486 | xmin=19.4*tga+12.3742; | |
487 | xmax=19.9*tga+12.3742; | |
488 | TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25); | |
489 | TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3); | |
490 | empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.)); | |
491 | xmin=29.35*tga+12.3742; | |
492 | xmax=29.75*tga+12.3742; | |
493 | TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2); | |
494 | TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3); | |
495 | empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9)); | |
496 | // | |
497 | // holes for connectors | |
498 | // | |
499 | TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc | |
500 | TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1); | |
d9e80aca | 501 | TString fileName(gSystem->Getenv("ALICE_ROOT")); |
502 | fileName += "/TPC/conn_iroc.dat"; | |
c1637e41 | 503 | ifstream in; |
d9e80aca | 504 | in.open(fileName.Data(), ios_base::in); // asci file |
c1637e41 | 505 | for(Int_t i =0;i<86;i++){ |
456cb019 | 506 | Double_t y = 3.99; |
c1637e41 | 507 | Double_t x,z,ang; |
508 | in>>x>>z>>ang; | |
456cb019 | 509 | z-=26.5; |
c1637e41 | 510 | TGeoRotation *rrr = new TGeoRotation(); |
511 | rrr->RotateY(ang); | |
512 | TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr); | |
513 | ibdv->AddNode(connv,i+1,trans); | |
514 | } | |
515 | in.close(); | |
516 | // "cap" | |
517 | new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825); | |
518 | // "hole" | |
519 | new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15); | |
520 | TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725); | |
521 | tr1->RegisterYourself(); | |
522 | TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1"); | |
523 | TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3); | |
524 | // | |
525 | // pad plane and wire fixations | |
526 | // | |
527 | TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso | |
528 | TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10"); | |
529 | TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4); | |
530 | TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.); | |
531 | TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4); | |
532 | TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.); | |
533 | TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4); | |
534 | // | |
535 | TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC"); | |
536 | // | |
537 | iroc->AddNode(ibdv,1); | |
538 | iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725)); | |
539 | iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725)); | |
540 | tga =(23.3521-14.5974)/49.65; | |
541 | Double_t xx = 24.825*tga+14.5974-0.6; | |
542 | iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725)); | |
543 | iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725)); | |
544 | // | |
545 | // OROC | |
546 | // | |
547 | TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65); | |
548 | TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3); | |
549 | TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65); | |
550 | TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1); | |
551 | obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.)); | |
552 | //horizontal bars | |
553 | tga=(38.5084-20.2938)/99.3; | |
554 | xmin=tga*10.2+20.2938; | |
555 | xmax=tga*10.6+20.2938; | |
556 | TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
557 | TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3); | |
558 | // | |
559 | xmin=22.55*tga+20.2938; | |
560 | xmax=24.15*tga+20.2938; | |
561 | TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8); | |
562 | TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3); | |
563 | // | |
564 | xmin=36.1*tga+20.2938; | |
565 | xmax=36.5*tga+20.2938; | |
566 | TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
567 | TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3); | |
568 | // | |
569 | xmin=49.0*tga+20.2938; | |
570 | xmax=50.6*tga+20.2938; | |
571 | TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8); | |
572 | TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3); | |
573 | // | |
574 | xmin=63.6*tga+20.2938; | |
575 | xmax=64.0*tga+20.2938; | |
576 | TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
577 | TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3); | |
578 | // | |
579 | xmin=75.5*tga+20.2938; | |
580 | xmax=77.15*tga+20.2938; | |
581 | TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8); | |
582 | TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3); | |
583 | // | |
584 | xmin=88.7*tga+20.2938; | |
585 | xmax=89.1*tga+20.2938; | |
586 | TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
587 | TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3); | |
588 | // | |
589 | oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25)); | |
590 | oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3)); | |
591 | oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35)); | |
592 | oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15)); | |
593 | oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15)); | |
594 | oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7)); | |
595 | oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25)); | |
596 | // vertical bars | |
597 | TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1); | |
598 | TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975); | |
599 | TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775); | |
600 | TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25); | |
601 | TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5); | |
602 | // | |
603 | TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3); | |
604 | TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3); | |
605 | TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3); | |
606 | TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3); | |
607 | TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3); | |
608 | // | |
609 | oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55)); | |
610 | oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55)); | |
611 | oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075)); | |
612 | oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525)); | |
613 | oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125)); | |
614 | oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275)); | |
615 | oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9)); | |
616 | oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45)); | |
617 | // | |
618 | // holes for connectors | |
619 | // | |
d9e80aca | 620 | fileName = gSystem->Getenv("ALICE_ROOT"); |
621 | fileName += "/TPC/conn_oroc.dat"; | |
622 | in.open(fileName.Data(), ios_base::in); // asci file | |
c1637e41 | 623 | for(Int_t i =0;i<78;i++){ |
624 | Double_t y =3.89; | |
625 | Double_t x,z,ang; | |
626 | Double_t x1,z1,x2,z2; | |
627 | in>>x>>z>>ang; | |
628 | Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad()); | |
629 | Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad()); | |
630 | // | |
631 | x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z; | |
632 | // | |
633 | TGeoRotation *rr = new TGeoRotation(); | |
634 | rr->RotateY(ang); | |
635 | z1-=54.95; | |
636 | z2-=54.95; | |
637 | TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr); | |
638 | TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr); | |
639 | obdv->AddNode(connv,i+1,trans1); | |
640 | obdv->AddNode(connv,i+79,trans2); | |
641 | } | |
642 | in.close(); | |
643 | // cap | |
644 | new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1); | |
645 | new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65); | |
646 | TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15); | |
647 | tr5->RegisterYourself(); | |
648 | TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5"); | |
649 | TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3); | |
650 | // | |
651 | // pad plane and wire fixations | |
652 | // | |
653 | TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1); | |
654 | TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4); | |
655 | // | |
656 | tga=(43.5239-23.3874)/114.2; | |
657 | TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.); | |
658 | TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.); | |
659 | xx = 57.1*tga+23.3874-0.7; | |
660 | TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4); | |
661 | TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4); | |
662 | // | |
663 | TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC"); | |
664 | // | |
665 | oroc->AddNode(obdv,1); | |
666 | oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15)); | |
667 | oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15)); | |
668 | oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15)); | |
669 | oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15)); | |
670 | // | |
671 | // now iroc and oroc are placed into a sector... | |
672 | // | |
a1ec4d07 | 673 | TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side |
674 | TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side | |
c1637e41 | 675 | TGeoRotation rot1("rot1",90.,90.,0.); |
676 | TGeoRotation rot2("rot2"); | |
677 | rot2.RotateY(10.); | |
678 | TGeoRotation *rot = new TGeoRotation("rot"); | |
679 | *rot=rot1*rot2; | |
680 | // | |
681 | Double_t x0,y0; | |
d899e254 | 682 | x0=110.2*TMath::Cos(openingAngle); |
683 | y0=110.2*TMath::Sin(openingAngle); | |
1bae4c82 | 684 | TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side |
685 | TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side | |
d899e254 | 686 | x0=188.45*TMath::Cos(openingAngle); |
687 | y0=188.45*TMath::Sin(openingAngle); | |
1bae4c82 | 688 | TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side |
689 | TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side | |
c1637e41 | 690 | // |
c1637e41 | 691 | // |
a1ec4d07 | 692 | // A-side |
c1637e41 | 693 | // |
a1ec4d07 | 694 | secta->AddNode(ch,1); |
695 | secta->AddNode(iroc,1,combi1a); | |
696 | secta->AddNode(oroc,1,combi2a); | |
697 | // | |
698 | // C-side | |
699 | // | |
700 | sectc->AddNode(ch,1); | |
701 | sectc->AddNode(iroc,1,combi1c); | |
702 | sectc->AddNode(oroc,1,combi2c); | |
703 | // | |
704 | // now I try to make wheels... | |
705 | // | |
706 | TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP"); | |
707 | TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP"); | |
c1637e41 | 708 | // |
709 | for(Int_t i =0;i<18;i++){ | |
710 | Double_t phi = (20.*i); | |
711 | TGeoRotation *r = new TGeoRotation(); | |
712 | r->RotateZ(phi); | |
a1ec4d07 | 713 | wheela->AddNode(secta,i+1,r); |
714 | wheelc->AddNode(sectc,i+1,r); | |
79575d04 | 715 | |
c1637e41 | 716 | } |
4fa47888 | 717 | // wheels in the drift volume! |
a1ec4d07 | 718 | |
c1637e41 | 719 | TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref); |
a1ec4d07 | 720 | v9->AddNode(wheela,1,combi3); |
721 | v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6)); | |
c1637e41 | 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 | |
729 | // | |
730 | thick=1.; | |
d899e254 | 731 | shift = thick/TMath::Sin(openingAngle); |
c1637e41 | 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 | |
736 | // | |
74518339 | 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 | |
742 | // | |
743 | shv->AddNode(elv,1); | |
744 | // | |
745 | // | |
d899e254 | 746 | ys = shift*TMath::Sin(openingAngle); |
747 | xs = shift*TMath::Cos(openingAngle); | |
c1637e41 | 748 | swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.)); |
749 | // cover | |
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 | |
754 | // hole in a cover | |
755 | TGeoPgon *coh = new TGeoPgon(0.,20.,1,2); | |
d899e254 | 756 | shift=4./TMath::Sin(openingAngle); |
c1637e41 | 757 | coh->DefineSection(0,-0.5,85.-shift,247.25-shift); |
758 | coh->DefineSection(1,0.5,85.-shift,247.25-shift); | |
759 | // | |
760 | TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1); | |
761 | // | |
d899e254 | 762 | ys = shift*TMath::Sin(openingAngle); |
763 | xs = shift*TMath::Cos(openingAngle); | |
c1637e41 | 764 | cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.)); |
765 | // | |
766 | // Sector as an Assembly | |
767 | // | |
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)); | |
772 | // | |
773 | // SSW as an Assembly of sectors | |
774 | // | |
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(); | |
779 | r->RotateZ(phi); | |
780 | swheel->AddNode(swhs,i+1,r); | |
781 | } | |
782 | v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6)); | |
783 | v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6)); | |
784 | ||
785 | // sensitive strips - strip "0" is always set | |
786 | // conditional | |
787 | Int_t totrows; | |
788 | totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp(); | |
789 | Double_t *upar; | |
790 | upar=NULL; | |
791 | gGeoManager->Volume("TPC_Strip","PGON",m5->GetId(),upar); | |
792 | upar=new Double_t [10]; | |
793 | upar[0]=0.; | |
794 | upar[1]=360.; | |
795 | upar[2]=18.; | |
796 | upar[3]=2.; | |
797 | // | |
798 | upar[4]=-124.8; | |
799 | upar[7]=124.8; | |
800 | ||
801 | Double_t rlow=fTPCParam->GetPadRowRadiiLow(0); | |
802 | ||
803 | upar[5]=rlow; | |
804 | upar[6]=rlow+.01; | |
805 | upar[8]=upar[5]; | |
806 | upar[9]=upar[6]; | |
807 | // | |
808 | gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); | |
809 | gGeoManager->Node("TPC_Strip",totrows+1, | |
810 | "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); | |
811 | // | |
812 | // now, strips optionally | |
813 | // | |
814 | if(fSens){ | |
815 | //lower sectors | |
816 | for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){ | |
817 | rlow=fTPCParam->GetPadRowRadiiLow(i-1); | |
818 | upar[5]=rlow; | |
819 | upar[6]=rlow+.01; | |
820 | upar[8]=upar[5]; | |
821 | upar[9]=upar[6]; | |
822 | gGeoManager->Node("TPC_Strip",i, | |
823 | "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); | |
824 | gGeoManager->Node("TPC_Strip",totrows+i, | |
825 | "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); | |
826 | } | |
827 | //upper sectors | |
828 | for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){ | |
829 | rlow=fTPCParam->GetPadRowRadiiUp(i-1); | |
830 | upar[5]=rlow; | |
831 | upar[6]=rlow+.01; | |
832 | upar[8]=upar[5]; | |
833 | upar[9]=upar[6]; | |
834 | gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(), | |
835 | "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); | |
836 | gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(), | |
837 | "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); | |
838 | } | |
839 | }//strips | |
37831078 | 840 | //---------------------------------------------------------- |
c1637e41 | 841 | // TPc Support Rods - MAKROLON |
37831078 | 842 | //---------------------------------------------------------- |
c1637e41 | 843 | TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon"); |
844 | TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu"); | |
845 | // upper and lower rods differ in length! | |
846 | delete [] upar; | |
847 | upar=NULL; | |
848 | gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar); | |
849 | upar=new Double_t [3]; | |
850 | upar[0]=1.8; | |
851 | upar[1]=2.2; | |
852 | ||
79575d04 | 853 | // |
c1637e41 | 854 | //HV rods - makrolon + 0.58cm (diameter) Cu |
ae4806ca | 855 | TGeoTube *hvr = new TGeoTube(0.,2.2,126.64); |
c1637e41 | 856 | TGeoTube *hvc = new TGeoTube(0.,0.29,126.64); |
857 | // | |
858 | TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6); | |
859 | TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7); | |
860 | hvrv->AddNode(hvcv,1); | |
861 | ||
7281dc07 | 862 | for(Int_t i=0;i<18;i++){ |
c1637e41 | 863 | Double_t angle,x,y; |
864 | Double_t z,r; | |
865 | angle=TMath::DegToRad()*20.*(Double_t)i; | |
866 | r=81.5; | |
867 | x=r * TMath::Cos(angle); | |
868 | y=r * TMath::Sin(angle); | |
869 | upar[2]=126.64; //lower | |
870 | z= 126.96; | |
871 | if(i==15){ | |
872 | v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z)); | |
873 | v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z)); | |
874 | } | |
875 | else{ | |
876 | gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft | |
0079eac0 | 877 | gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon |
c1637e41 | 878 | } |
879 | r=254.25; | |
880 | x=r * TMath::Cos(angle); | |
881 | y=r * TMath::Sin(angle); | |
882 | upar[2]=126.54; //upper | |
883 | z=127.06; | |
0079eac0 | 884 | gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3); |
885 | gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3); | |
c1637e41 | 886 | } |
79575d04 | 887 | |
69776907 | 888 | delete [] upar; |
889 | ||
bde68ab0 | 890 | TGeoVolume *alice = gGeoManager->GetVolume("ALIC"); |
891 | alice->AddNode(v1,1); | |
c1637e41 | 892 | |
37831078 | 893 | } // end of function |
894 | ||
ac81c411 | 895 | //_____________________________________________________________________________ |
896 | void AliTPCv2::AddAlignableVolumes() const | |
897 | { | |
898 | // | |
899 | // Create entries for alignable volumes associating the symbolic volume | |
900 | // name with the corresponding volume path. Needs to be syncronized with | |
901 | // eventual changes in the geometry. | |
902 | // | |
903 | SetInnerChambersAlignable(); | |
904 | SetOuterChambersAlignable(); | |
905 | } | |
906 | ||
907 | //_____________________________________________________________________________ | |
908 | void AliTPCv2::SetInnerChambersAlignable() const | |
909 | { | |
910 | // | |
911 | Int_t modnum = 0; | |
d899e254 | 912 | TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_"; |
913 | TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_"; | |
914 | TString vpappend = "/TPC_IROC_1"; | |
915 | TString snstr1="TPC/EndcapA/Sector"; | |
916 | TString snstr2="TPC/EndcapC/Sector"; | |
917 | TString snappend="/InnerChamber"; | |
ac81c411 | 918 | TString volpath, symname; |
919 | ||
1ac29fc4 | 920 | for(Int_t cnt=1; cnt<=18; cnt++){ |
921 | volpath = vpstr1; | |
922 | volpath += cnt; | |
923 | volpath += vpappend; | |
924 | symname = snstr1; | |
925 | symname += cnt; | |
926 | symname += snappend; | |
84cbbd90 | 927 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) |
928 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
1ac29fc4 | 929 | // |
930 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); | |
931 | const char *path = alignableEntry->GetTitle(); | |
932 | if (!gGeoManager->cd(path)) | |
933 | AliFatal(Form("Volume path %s not valid!",path)); | |
934 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
935 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,cnt-1); | |
936 | alignableEntry->SetMatrix(matTtoL); | |
937 | modnum++; | |
938 | } | |
65293f49 | 939 | |
ac81c411 | 940 | for(Int_t cnt=1; cnt<=18; cnt++){ |
d899e254 | 941 | volpath = vpstr2; |
ac81c411 | 942 | volpath += cnt; |
d899e254 | 943 | volpath += vpappend; |
944 | symname = snstr2; | |
ac81c411 | 945 | symname += cnt; |
d899e254 | 946 | symname += snappend; |
84cbbd90 | 947 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) |
948 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
1ac29fc4 | 949 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); |
950 | const char *path = alignableEntry->GetTitle(); | |
951 | if (!gGeoManager->cd(path)) | |
952 | AliFatal(Form("Volume path %s not valid!",path)); | |
953 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
954 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,18+cnt-1); | |
955 | alignableEntry->SetMatrix(matTtoL); | |
ac81c411 | 956 | modnum++; |
957 | } | |
958 | } | |
959 | ||
ac81c411 | 960 | //_____________________________________________________________________________ |
961 | void AliTPCv2::SetOuterChambersAlignable() const | |
962 | { | |
963 | // | |
964 | Int_t modnum = 0; | |
d899e254 | 965 | TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_"; |
966 | TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_"; | |
967 | TString vpappend = "/TPC_OROC_1"; | |
968 | TString snstr1="TPC/EndcapA/Sector"; | |
969 | TString snstr2="TPC/EndcapC/Sector"; | |
970 | TString snappend="/OuterChamber"; | |
ac81c411 | 971 | TString volpath, symname; |
972 | ||
973 | for(Int_t cnt=1; cnt<=18; cnt++){ | |
d899e254 | 974 | volpath = vpstr1; |
ac81c411 | 975 | volpath += cnt; |
d899e254 | 976 | volpath += vpappend; |
977 | symname = snstr1; | |
ac81c411 | 978 | symname += cnt; |
d899e254 | 979 | symname += snappend; |
84cbbd90 | 980 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) |
981 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
1ac29fc4 | 982 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); |
983 | const char *path = alignableEntry->GetTitle(); | |
984 | if (!gGeoManager->cd(path)) | |
985 | AliFatal(Form("Volume path %s not valid!",path)); | |
986 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
987 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+cnt-1); | |
988 | alignableEntry->SetMatrix(matTtoL); | |
ac81c411 | 989 | modnum++; |
990 | } | |
84cbbd90 | 991 | |
ac81c411 | 992 | for(Int_t cnt=1; cnt<=18; cnt++){ |
d899e254 | 993 | volpath = vpstr2; |
ac81c411 | 994 | volpath += cnt; |
d899e254 | 995 | volpath += vpappend; |
996 | symname = snstr2; | |
ac81c411 | 997 | symname += cnt; |
d899e254 | 998 | symname += snappend; |
84cbbd90 | 999 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) |
1000 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
1ac29fc4 | 1001 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); |
1002 | const char *path = alignableEntry->GetTitle(); | |
1003 | if (!gGeoManager->cd(path)) | |
1004 | AliFatal(Form("Volume path %s not valid!",path)); | |
1005 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
1006 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+18+cnt-1); | |
1007 | alignableEntry->SetMatrix(matTtoL); | |
ac81c411 | 1008 | modnum++; |
1009 | } | |
1010 | } | |
1011 | ||
37831078 | 1012 | //_____________________________________________________________________________ |
d899e254 | 1013 | void AliTPCv2::DrawDetector() const |
37831078 | 1014 | { |
1015 | // | |
1016 | // Draw a shaded view of the Time Projection Chamber version 1 | |
1017 | // | |
1018 | ||
1019 | // Set everything unseen | |
1020 | gMC->Gsatt("*", "seen", -1); | |
1021 | // | |
1022 | // Set ALIC mother transparent | |
1023 | gMC->Gsatt("ALIC","SEEN",0); | |
1024 | // | |
1025 | // Set the volumes visible | |
1026 | // | |
1027 | ||
1028 | gMC->Gsatt("TPC ","SEEN",0); | |
1029 | gMC->Gsatt("TOIN","SEEN",1); | |
1030 | gMC->Gsatt("TOIN","COLO",7); | |
37831078 | 1031 | gMC->Gsatt("TOCV","SEEN",1); |
1032 | gMC->Gsatt("TOCV","COLO",4); | |
1033 | gMC->Gsatt("TSA1","SEEN",0); | |
1034 | gMC->Gsatt("TSA2","SEEN",0); | |
1035 | gMC->Gsatt("TSA3","SEEN",0); | |
79575d04 | 1036 | gMC->Gsatt("TSA4","SEEN",0); |
1037 | gMC->Gsatt("TSA5","SEEN",0); | |
37831078 | 1038 | gMC->Gsatt("TOFC","SEEN",1); |
1039 | gMC->Gsatt("TOFC","COLO",4); | |
37831078 | 1040 | gMC->Gsatt("TSA6","SEEN",0); |
1041 | gMC->Gsatt("TSA7","SEEN",0); | |
79575d04 | 1042 | gMC->Gsatt("TSA8","SEEN",0); |
37831078 | 1043 | gMC->Gsatt("TIIN","SEEN",1); |
79575d04 | 1044 | gMC->Gsatt("TIIN","COLO",7); |
1045 | gMC->Gsatt("TII1","SEEN",0); | |
1046 | gMC->Gsatt("TIFC","SEEN",1); | |
1047 | gMC->Gsatt("TIFC","COLO",4); | |
1048 | gMC->Gsatt("TSA9","SEEN",0); | |
37831078 | 1049 | gMC->Gsatt("TS10","SEEN",0); |
1050 | gMC->Gsatt("TS11","SEEN",0); | |
1051 | gMC->Gsatt("TS12","SEEN",0); | |
37831078 | 1052 | gMC->Gsatt("TS13","SEEN",0); |
1053 | gMC->Gsatt("TS14","SEEN",0); | |
79575d04 | 1054 | gMC->Gsatt("TICC","SEEN",0); |
1055 | gMC->Gsatt("TICM","SEEN",0); | |
37831078 | 1056 | gMC->Gsatt("TS15","SEEN",0); |
1057 | gMC->Gsatt("TS16","SEEN",0); | |
37831078 | 1058 | gMC->Gsatt("TS17","SEEN",0); |
79575d04 | 1059 | gMC->Gsatt("TS18","SEEN",0); |
1060 | gMC->Gsatt("TS19","SEEN",0); | |
1061 | gMC->Gsatt("TPJ1","SEEN",0); | |
1062 | gMC->Gsatt("TPJ2","SEEN",0); | |
1063 | gMC->Gsatt("TICS","SEEN",0); | |
1064 | gMC->Gsatt("TDGN","SEEN",0); | |
37831078 | 1065 | gMC->Gsatt("TIRC","SEEN",0); |
1066 | gMC->Gsatt("TIC1","SEEN",1); | |
1067 | gMC->Gsatt("TIPP","SEEN",0); | |
1068 | gMC->Gsatt("TIC3","SEEN",0); | |
1069 | gMC->Gsatt("TRCE","SEEN",0); | |
1070 | gMC->Gsatt("TPSC","SEEN",0); | |
79575d04 | 1071 | gMC->Gsatt("TPCC","SEEN",0); |
37831078 | 1072 | gMC->Gsatt("TORC","SEEN",0); |
1073 | gMC->Gsatt("TOPP","SEEN",0); | |
1074 | gMC->Gsatt("TOC3","SEEN",0); | |
1075 | gMC->Gsatt("TOC1","SEEN",1); | |
1076 | gMC->Gsatt("TSSW","SEEN",1); | |
1077 | gMC->Gsatt("TSWC","SEEN",1); | |
37831078 | 1078 | gMC->Gsatt("TSSW","COLO",3); |
1079 | gMC->Gsatt("TSWC","COLO",3); | |
1080 | gMC->Gsatt("TSCE","COLO",6); | |
79575d04 | 1081 | gMC->Gsatt("TSCE","SEEN",1); |
37831078 | 1082 | gMC->Gsatt("TWES","SEEN",0); |
1083 | gMC->Gsatt("TSWB","SEEN",0); | |
1084 | gMC->Gsatt("TPEL","SEEN",0); | |
1085 | gMC->Gsatt("TPMW","SEEN",1); | |
37831078 | 1086 | gMC->Gsatt("TESR","SEEN",1); |
1087 | gMC->Gsatt("TPMW","COLO",12); | |
37831078 | 1088 | gMC->Gsatt("TIC1","COLO",5); |
79575d04 | 1089 | gMC->Gsatt("TOC1","COLO",5); |
37831078 | 1090 | gMC->Gsatt("TESB","SEEN",0); |
37831078 | 1091 | gMC->Gsatt("THVM","SEEN",1); |
1092 | gMC->Gsatt("THVM","COLO",11); | |
79575d04 | 1093 | gMC->Gsatt("THVH","SEEN",0); |
1094 | gMC->Gsatt("TPSR","SEEN",0); | |
37831078 | 1095 | gMC->Gsatt("THVL","SEEN",0); |
79575d04 | 1096 | gMC->Gsatt("THVC","SEEN",0); |
37831078 | 1097 | gMC->Gsatt("THVE","SEEN",0); |
1098 | gMC->Gsatt("THVR","SEEN",0); | |
79575d04 | 1099 | gMC->Gsatt("TPSS","SEEN",0); |
1100 | gMC->Gsatt("TPUS","SEEN",0); | |
1101 | gMC->Gsatt("TPLS","SEEN",0); | |
37831078 | 1102 | |
1103 | // | |
1104 | gMC->Gdopt("hide", "on"); | |
1105 | gMC->Gdopt("shad", "on"); | |
1106 | gMC->Gsatt("*", "fill", 7); | |
1107 | gMC->SetClipBox("."); | |
1108 | gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.); | |
1109 | gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.); | |
1110 | gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.); | |
1111 | gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.); | |
1112 | gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290); | |
1113 | gMC->DefaultRange(); | |
1114 | gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025); | |
1115 | gMC->Gdhead(1111, "Time Projection Chamber"); | |
1116 | gMC->Gdman(18, 4, "MAN"); | |
1117 | gMC->Gdopt("hide","off"); | |
1118 | } | |
1119 | ||
1120 | //_____________________________________________________________________________ | |
1121 | void AliTPCv2::CreateMaterials() | |
1122 | { | |
1123 | // | |
1124 | // Define materials for version 2 of the Time Projection Chamber | |
1125 | // | |
1126 | ||
1127 | AliTPC::CreateMaterials(); | |
1128 | } | |
1129 | ||
1130 | //_____________________________________________________________________________ | |
1131 | void AliTPCv2::Init() | |
1132 | { | |
1133 | // | |
1134 | // Initialises version 2 of the TPC after that it has been built | |
1135 | // | |
1136 | ||
1137 | Int_t *idtmed = fIdtmed->GetArray(); | |
1138 | ||
1139 | AliTPC::Init(); | |
d4c354b9 | 1140 | |
c1637e41 | 1141 | |
1142 | fIdSens=gMC->VolId("TPC_Strip"); // one strip is always selected... | |
d4c354b9 | 1143 | |
c1637e41 | 1144 | fIDrift=gMC->VolId("TPC_Drift"); |
1145 | fSecOld=-100; // fake number | |
37831078 | 1146 | |
1147 | gMC->SetMaxNStep(30000); // max. number of steps increased | |
1148 | ||
4481461d | 1149 | if (fPrimaryIonisation) { |
1150 | gMC->Gstpar(idtmed[2],"PRIMIO_E", 20.77); // 1st ionisation potential | |
1151 | ||
1152 | gMC->Gstpar(idtmed[2],"PRIMIO_N", 14.35); | |
1153 | gMC->Gstpar(idtmed[2],"LOSS", 14); // specific energy loss | |
1154 | } else { | |
1155 | gMC->Gstpar(idtmed[2],"LOSS", 5); // specific energy loss | |
1156 | } | |
1157 | ||
37831078 | 1158 | |
f77f13c8 | 1159 | AliInfo("*** TPC version 2 initialized ***"); |
1160 | AliInfo(Form("Maximum number of steps = %d",gMC->GetMaxNStep())); | |
37831078 | 1161 | |
1162 | // | |
fe4da5cc | 1163 | |
1164 | } | |
1165 | ||
1166 | //_____________________________________________________________________________ | |
1167 | void AliTPCv2::StepManager() | |
1168 | { | |
1169 | // | |
1170 | // Called for every step in the Time Projection Chamber | |
1171 | // | |
1172 | ||
1173 | // | |
1174 | // parameters used for the energy loss calculations | |
1175 | // | |
73042f01 | 1176 | const Float_t kprim = 14.35; // number of primary collisions per 1 cm |
1177 | const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2 | |
1178 | const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation | |
fe4da5cc | 1179 | |
1180 | ||
73042f01 | 1181 | const Float_t kbig = 1.e10; |
fe4da5cc | 1182 | |
1183 | Int_t id,copy; | |
e61fd20d | 1184 | Float_t hits[5]; |
fe4da5cc | 1185 | Int_t vol[2]; |
37831078 | 1186 | TLorentzVector p; |
fe4da5cc | 1187 | |
37831078 | 1188 | vol[1]=0; // preset row number to 0 |
fe4da5cc | 1189 | // |
b97617a6 | 1190 | if (fPrimaryIonisation) gMC->SetMaxStep(kbig); |
fe4da5cc | 1191 | |
0a6d8768 | 1192 | if(!gMC->IsTrackAlive()) return; // particle has disappeared |
fe4da5cc | 1193 | |
cfce8870 | 1194 | Float_t charge = gMC->TrackCharge(); |
fe4da5cc | 1195 | |
1196 | if(TMath::Abs(charge)<=0.) return; // take only charged particles | |
1197 | ||
37831078 | 1198 | // check the sensitive volume |
1199 | ||
c1637e41 | 1200 | id = gMC->CurrentVolID(copy); // vol ID and copy number (starts from 1!) |
1201 | if(id != fIDrift && id != fIdSens) return; // not in the sensitive folume | |
da33556f | 1202 | |
c1637e41 | 1203 | gMC->TrackPosition(p); |
1204 | Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]); | |
1205 | // | |
1206 | ||
1207 | // | |
1208 | Double_t angle = TMath::ACos(p[0]/r); | |
1209 | angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle; | |
1210 | // | |
1211 | // angular segment, it is not a real sector number... | |
1212 | // | |
1213 | Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/ | |
1214 | fTPCParam->GetInnerAngle()); | |
1215 | // rotate to segment "0" | |
1216 | Float_t cos,sin; | |
1217 | fTPCParam->AdjustCosSin(sector,cos,sin); | |
1218 | Float_t x1=p[0]*cos + p[1]*sin; | |
1219 | // check if within sector's limits | |
1220 | if(x1>=fTPCParam->GetInnerRadiusLow()&&x1<=fTPCParam->GetInnerRadiusUp() | |
1221 | ||x1>=fTPCParam->GetOuterRadiusLow()&&x1<=fTPCParam->GetOuterRadiusUp()){ | |
1222 | // calculate real sector number... | |
1223 | if (x1>fTPCParam->GetOuterRadiusLow()){ | |
1224 | sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/ | |
1225 | fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector(); | |
1226 | if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1); | |
37831078 | 1227 | } |
c1637e41 | 1228 | else |
1229 | if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1); | |
1230 | // | |
1231 | // here I have a sector number | |
1232 | // | |
37831078 | 1233 | |
c1637e41 | 1234 | vol[0]=sector; |
1235 | // check if change of sector | |
1236 | if(sector != fSecOld){ | |
1237 | fSecOld=sector; | |
1238 | // add track reference | |
e6add757 | 1239 | AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kTPC); |
c1637e41 | 1240 | } |
1241 | // track is in the sensitive strip | |
1242 | if(id == fIdSens){ | |
1243 | // track is entering the strip | |
1244 | if (gMC->IsTrackEntering()){ | |
1245 | Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp(); | |
1246 | vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows; | |
1247 | // row numbers are autonomous for lower and upper sectors | |
1248 | if(vol[0] > fTPCParam->GetNInnerSector()) { | |
1249 | vol[1] -= fTPCParam->GetNRowLow(); | |
1250 | } | |
1251 | // | |
1252 | if(vol[0]<fTPCParam->GetNInnerSector()&&vol[1] == 0){ | |
37831078 | 1253 | |
c1637e41 | 1254 | // lower sector, row 0, because Jouri wants to have this |
37831078 | 1255 | |
c1637e41 | 1256 | gMC->TrackMomentum(p); |
1257 | hits[0]=p[0]; | |
1258 | hits[1]=p[1]; | |
1259 | hits[2]=p[2]; | |
1260 | hits[3]=0.; // this hit has no energy loss | |
1261 | // Get also the track time for pileup simulation | |
1262 | hits[4]=gMC->TrackTime(); | |
6a905708 | 1263 | |
c1637e41 | 1264 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); |
1265 | } | |
1266 | // | |
e61fd20d | 1267 | |
c1637e41 | 1268 | gMC->TrackPosition(p); |
1269 | hits[0]=p[0]; | |
1270 | hits[1]=p[1]; | |
1271 | hits[2]=p[2]; | |
1272 | hits[3]=0.; // this hit has no energy loss | |
1273 | // Get also the track time for pileup simulation | |
1274 | hits[4]=gMC->TrackTime(); | |
930ee558 | 1275 | |
c1637e41 | 1276 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); |
37831078 | 1277 | |
c1637e41 | 1278 | } |
1279 | else return; | |
1280 | } | |
37831078 | 1281 | //----------------------------------------------------------------- |
c1637e41 | 1282 | // charged particle is in the sensitive drift volume |
37831078 | 1283 | //----------------------------------------------------------------- |
cfce8870 | 1284 | if(gMC->TrackStep() > 0) { |
b97617a6 | 1285 | Int_t nel=0; |
1286 | if (!fPrimaryIonisation) { | |
1287 | nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1; | |
1288 | } | |
1289 | else { | |
1290 | Float_t edep = gMC->Edep(); | |
1291 | if (edep > 0.) nel = (Int_t)((gMC->Edep()*1.5)/kwIon) + 1; | |
1292 | } | |
fe4da5cc | 1293 | nel=TMath::Min(nel,300); // 300 electrons corresponds to 10 keV |
c1637e41 | 1294 | // |
37831078 | 1295 | gMC->TrackPosition(p); |
1296 | hits[0]=p[0]; | |
1297 | hits[1]=p[1]; | |
1298 | hits[2]=p[2]; | |
fe4da5cc | 1299 | hits[3]=(Float_t)nel; |
c1637e41 | 1300 | |
fe4da5cc | 1301 | // Add this hit |
c1637e41 | 1302 | |
6a905708 | 1303 | if (fHitType&&2){ |
1304 | gMC->TrackMomentum(p); | |
1305 | Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]); | |
1306 | Float_t precision = (momentum>0.1) ? 0.002 :0.01; | |
1307 | fTrackHits->SetHitPrecision(precision); | |
1308 | } | |
e61fd20d | 1309 | |
1310 | // Get also the track time for pileup simulation | |
1311 | hits[4]=gMC->TrackTime(); | |
c1637e41 | 1312 | |
1313 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); | |
e61fd20d | 1314 | |
c1637e41 | 1315 | } // step>0 |
1316 | } //within sector's limits | |
fe4da5cc | 1317 | // Stemax calculation for the next step |
1318 | ||
1319 | Float_t pp; | |
0a6d8768 | 1320 | TLorentzVector mom; |
b97617a6 | 1321 | // below is valid only for Geant3 (fPromaryIonisation not set) |
1322 | if(!fPrimaryIonisation){ | |
1323 | gMC->TrackMomentum(mom); | |
1324 | Float_t ptot=mom.Rho(); | |
1325 | Float_t betaGamma = ptot/gMC->TrackMass(); | |
595bf2c3 | 1326 | |
b97617a6 | 1327 | Int_t pid=gMC->TrackPid(); |
1328 | if((pid==kElectron || pid==kPositron) && ptot > 0.002) | |
1329 | { | |
1330 | pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau! | |
1331 | } | |
1332 | else | |
1333 | { | |
1334 | ||
1335 | betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg | |
1336 | pp=kprim*BetheBloch(betaGamma); | |
595bf2c3 | 1337 | |
b97617a6 | 1338 | if(TMath::Abs(charge) > 1.) pp *= (charge*charge); |
fe4da5cc | 1339 | } |
1340 | ||
b97617a6 | 1341 | Double_t rnd = gMC->GetRandom()->Rndm(); |
fe4da5cc | 1342 | |
b97617a6 | 1343 | gMC->SetMaxStep(-TMath::Log(rnd)/pp); |
1344 | } | |
c1637e41 | 1345 | |
fe4da5cc | 1346 | } |
1347 | ||
1348 | //_____________________________________________________________________________ | |
1349 | Float_t AliTPCv2::BetheBloch(Float_t bg) | |
1350 | { | |
1351 | // | |
1352 | // Bethe-Bloch energy loss formula | |
1353 | // | |
73042f01 | 1354 | const Double_t kp1=0.76176e-1; |
1355 | const Double_t kp2=10.632; | |
1356 | const Double_t kp3=0.13279e-4; | |
1357 | const Double_t kp4=1.8631; | |
1358 | const Double_t kp5=1.9479; | |
fe4da5cc | 1359 | |
1360 | Double_t dbg = (Double_t) bg; | |
1361 | ||
1362 | Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg); | |
1363 | ||
73042f01 | 1364 | Double_t aa = TMath::Power(beta,kp4); |
1365 | Double_t bb = TMath::Power(1./dbg,kp5); | |
fe4da5cc | 1366 | |
73042f01 | 1367 | bb=TMath::Log(kp3+bb); |
fe4da5cc | 1368 | |
73042f01 | 1369 | return ((Float_t)((kp2-aa-bb)*kp1/aa)); |
fe4da5cc | 1370 | } |
73042f01 | 1371 | |
1372 |