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457e2170 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
e6add757 | 18 | Revision 1.1 2007/06/24 20:56:19 hristov |
19 | TPC version for the krypton runs (Marek) | |
20 | ||
457e2170 | 21 | */ |
22 | ||
23 | // | |
24 | /////////////////////////////////////////////////////////////////////////////// | |
25 | // // | |
26 | // Time Projection Chamber version 4 -- detailed TPC and slow simulation // | |
27 | // of Krypton decays // | |
28 | // // | |
29 | //Begin_Html // | |
30 | /* | |
31 | <img src="picts/AliTPCv2Class.gif"> | |
32 | */ | |
33 | //End_Html | |
34 | // // | |
35 | // // | |
36 | /////////////////////////////////////////////////////////////////////////////// | |
37 | ||
38 | //#include <stdlib.h> | |
39 | ||
40 | #include <TLorentzVector.h> | |
41 | #include <TPDGCode.h> | |
42 | #include <TString.h> | |
43 | #include "AliLog.h" | |
44 | #include "AliTPCParam.h" | |
45 | #include "AliTPCTrackHitsV2.h" | |
46 | #include "AliTPCv4.h" | |
47 | #include "TGeoVolume.h" | |
48 | #include "TGeoPcon.h" | |
49 | #include "TGeoTube.h" | |
50 | #include "TGeoPgon.h" | |
51 | #include "TGeoTrd1.h" | |
52 | #include "TGeoCompositeShape.h" | |
53 | #include "TGeoPara.h" | |
54 | #include "TGeoPhysicalNode.h" | |
55 | ||
56 | ClassImp(AliTPCv4) | |
57 | ||
58 | //_____________________________________________________________________________ | |
59 | AliTPCv4::AliTPCv4(const char *name, const char *title) : | |
60 | AliTPC(name, title), | |
61 | fIdSens(0), | |
62 | fIDrift(0), | |
63 | fSecOld(0) | |
64 | { | |
65 | // | |
66 | // Standard constructor for Time Projection Chamber version 2 | |
67 | // | |
68 | ||
69 | ||
70 | SetBufferSize(128000); | |
71 | ||
72 | ||
73 | if (fTPCParam) | |
74 | fTPCParam->Write(fTPCParam->GetTitle()); | |
75 | } | |
76 | ||
77 | //_____________________________________________________________________________ | |
78 | void AliTPCv4::CreateGeometry() | |
79 | { | |
80 | // | |
81 | // Create the geometry of Time Projection Chamber version 2 | |
82 | // | |
83 | //Begin_Html | |
84 | /* | |
85 | <img src="picts/AliTPC.gif"> | |
86 | */ | |
87 | //End_Html | |
88 | //Begin_Html | |
89 | /* | |
90 | <img src="picts/AliTPCv2Tree.gif"> | |
91 | */ | |
92 | //End_Html | |
93 | ||
94 | //---------------------------------------------------------- | |
95 | // This geometry is written using TGeo class | |
96 | // Firstly the shapes are defined, and only then the volumes | |
97 | // What is recognized by the MC are volumes | |
98 | //---------------------------------------------------------- | |
99 | // | |
100 | // tpc - this will be the mother volume | |
101 | // | |
102 | ||
103 | // | |
104 | // here I define a volume TPC | |
105 | // retrive the medium name with "TPC_" as a leading string | |
106 | // | |
107 | TGeoPcon *tpc = new TGeoPcon(0.,360.,18); //18 sections | |
108 | tpc->DefineSection(0,-290.,77.,278.); | |
109 | tpc->DefineSection(1,-259.6,70.,278.); | |
110 | // | |
111 | tpc->DefineSection(2,-259.6,68.1,278.); | |
112 | tpc->DefineSection(3,-253.6,68.1,278.); | |
113 | // | |
114 | tpc->DefineSection(4,-253.6,68.,278.); | |
115 | tpc->DefineSection(5,-74.0,60.8,278.); | |
116 | // | |
117 | tpc->DefineSection(6,-74.0,60.1,278.); | |
118 | tpc->DefineSection(7,-73.3,60.1,278.); | |
119 | // | |
120 | tpc->DefineSection(8,-73.3,56.9,278.); | |
121 | tpc->DefineSection(9,73.3,56.9,278.); | |
122 | // | |
123 | tpc->DefineSection(10,73.3,60.1,278.); | |
124 | tpc->DefineSection(11,74.0,60.1,278.); | |
125 | // | |
126 | tpc->DefineSection(12,74.0,60.8,278.); | |
127 | tpc->DefineSection(13,253.6,65.5,278.); | |
128 | // | |
129 | tpc->DefineSection(14,253.6,65.6,278.); | |
130 | tpc->DefineSection(15,259.6,65.6,278.); | |
131 | // | |
132 | tpc->DefineSection(16,259.6,70.0,278.); | |
133 | tpc->DefineSection(17,290.,77.,278.); | |
134 | // | |
135 | TGeoMedium *m1 = gGeoManager->GetMedium("TPC_Air"); | |
136 | TGeoVolume *v1 = new TGeoVolume("TPC_M",tpc,m1); | |
137 | // | |
138 | // drift volume - sensitive volume, extended beyond the | |
139 | // endcaps, because of the alignment | |
140 | // | |
141 | TGeoPcon *dvol = new TGeoPcon(0.,360.,6); | |
142 | dvol->DefineSection(0,-260.,74.5,264.4); | |
143 | dvol->DefineSection(1,-253.6,74.5,264.4); | |
144 | // | |
145 | dvol->DefineSection(2,-253.6,76.6774,258.); | |
146 | dvol->DefineSection(3,253.6,76.6774,258.); | |
147 | // | |
148 | dvol->DefineSection(4,253.6,74.5,264.4); | |
149 | dvol->DefineSection(5,260.,74.5,264.4); | |
150 | // | |
151 | TGeoMedium *m5 = gGeoManager->GetMedium("TPC_Ne-CO2-N-3"); | |
152 | TGeoVolume *v9 = new TGeoVolume("TPC_Drift",dvol,m5); | |
153 | // | |
154 | v1->AddNode(v9,1); | |
155 | // | |
156 | // outer insulator | |
157 | // | |
158 | TGeoPcon *tpco = new TGeoPcon(0.,360.,6); //insulator | |
159 | // | |
160 | tpco->DefineSection(0,-256.6,264.8,278.); | |
161 | tpco->DefineSection(1,-253.6,264.8,278.); | |
162 | // | |
163 | tpco->DefineSection(2,-253.6,258.,278.); | |
164 | tpco->DefineSection(3,250.6,258.,278.); | |
165 | // | |
166 | tpco->DefineSection(4,250.6,258.,275.5); | |
167 | tpco->DefineSection(5,253.6,258.,275.5); | |
168 | // | |
169 | TGeoMedium *m2 = gGeoManager->GetMedium("TPC_CO2"); | |
170 | TGeoVolume *v2 = new TGeoVolume("TPC_OI",tpco,m2); | |
171 | // | |
172 | // outer containment vessel | |
173 | // | |
174 | TGeoPcon *tocv = new TGeoPcon(0.,360.,6); // containment vessel | |
175 | // | |
176 | tocv->DefineSection(0,-256.6,264.8,278.); | |
177 | tocv->DefineSection(1,-253.6,264.8,278.); | |
178 | // | |
179 | tocv->DefineSection(2,-253.6,274.8124,278.); | |
180 | tocv->DefineSection(3,247.6,274.8124,278.); | |
181 | // | |
182 | tocv->DefineSection(4,247.6,270.4,278.); | |
183 | tocv->DefineSection(5,250.6,270.4,278.); | |
184 | // | |
185 | TGeoMedium *m3 = gGeoManager->GetMedium("TPC_Al"); | |
186 | TGeoVolume *v3 = new TGeoVolume("TPC_OCV",tocv,m3); | |
187 | // | |
188 | TGeoTube *to1 = new TGeoTube(274.8174,277.995,252.1); //epoxy | |
189 | TGeoTube *to2 = new TGeoTube(274.8274,277.985,252.1); //tedlar | |
190 | TGeoTube *to3 = new TGeoTube(274.8312,277.9812,252.1);//prepreg2 | |
191 | TGeoTube *to4 = new TGeoTube(274.9062,277.9062,252.1);//nomex | |
192 | // | |
193 | TGeoMedium *sm1 = gGeoManager->GetMedium("TPC_Epoxy"); | |
194 | TGeoMedium *sm2 = gGeoManager->GetMedium("TPC_Tedlar"); | |
195 | TGeoMedium *sm3 = gGeoManager->GetMedium("TPC_Prepreg2"); | |
196 | TGeoMedium *sm4 = gGeoManager->GetMedium("TPC_Nomex"); | |
197 | // | |
198 | TGeoVolume *tov1 = new TGeoVolume("TPC_OCV1",to1,sm1); | |
199 | TGeoVolume *tov2 = new TGeoVolume("TPC_OCV2",to2,sm2); | |
200 | TGeoVolume *tov3 = new TGeoVolume("TPC_OCV3",to3,sm3); | |
201 | TGeoVolume *tov4 = new TGeoVolume("TPC_OCV4",to4,sm4); | |
202 | //------------------------------------------------------- | |
203 | // Tpc Outer Field Cage | |
204 | // daughters - composite (sandwich) | |
205 | //------------------------------------------------------- | |
206 | ||
207 | TGeoPcon *tofc = new TGeoPcon(0.,360.,6); | |
208 | // | |
209 | tofc->DefineSection(0,-253.6,258.,269.6); | |
210 | tofc->DefineSection(1,-250.6,258.,269.6); | |
211 | // | |
212 | tofc->DefineSection(2,-250.6,258.,260.0676); | |
213 | tofc->DefineSection(3,250.6,258.,260.0676); | |
214 | // | |
215 | tofc->DefineSection(4,250.6,258.,275.5); | |
216 | tofc->DefineSection(5,253.6,258.,275.5); | |
217 | // | |
218 | TGeoVolume *v4 = new TGeoVolume("TPC_TOFC",tofc,m3); | |
219 | //sandwich | |
220 | TGeoTube *tf1 = new TGeoTube(258.0,260.0676,252.1); //tedlar | |
221 | TGeoTube *tf2 = new TGeoTube(258.0038,260.0638,252.1); //prepreg3 | |
222 | TGeoTube *tf3 = new TGeoTube(258.0338,260.0338,252.1);//nomex | |
223 | // | |
224 | TGeoMedium *sm5 = gGeoManager->GetMedium("TPC_Prepreg3"); | |
225 | // | |
226 | TGeoVolume *tf1v = new TGeoVolume("TPC_OFC1",tf1,sm2); | |
227 | TGeoVolume *tf2v = new TGeoVolume("TPC_OFC2",tf2,sm5); | |
228 | TGeoVolume *tf3v = new TGeoVolume("TPC_OFC3",tf3,sm4); | |
229 | // | |
230 | // outer part - positioning | |
231 | // | |
232 | tov1->AddNode(tov2,1); tov2->AddNode(tov3,1); tov3->AddNode(tov4,1); | |
233 | // | |
234 | tf1v->AddNode(tf2v,1); tf2v->AddNode(tf3v,1); | |
235 | // | |
236 | v3->AddNode(tov1,1,new TGeoTranslation(0.,0.,-1.5)); v4->AddNode(tf1v,1); | |
237 | // | |
238 | v2->AddNode(v3,1); v2->AddNode(v4,1); | |
239 | // | |
240 | v1->AddNode(v2,1); | |
241 | //-------------------------------------------------------------------- | |
242 | // Tpc Inner INsulator (CO2) | |
243 | // the cones, the central drum and the inner f.c. sandwich with a piece | |
244 | // of the flane will be placed in the TPC | |
245 | //-------------------------------------------------------------------- | |
246 | TGeoPcon *tpci = new TGeoPcon(0.,360.,4); | |
247 | // | |
248 | tpci->DefineSection(0,-253.6,68.4,76.6774); | |
249 | tpci->DefineSection(1,-74.0,61.2,76.6774); | |
250 | // | |
251 | tpci->DefineSection(2,74.0,61.2,76.6774); | |
252 | // | |
253 | tpci->DefineSection(3,253.6,65.9,76.6774); | |
254 | // | |
255 | TGeoVolume *v5 = new TGeoVolume("TPC_INI",tpci,m2); | |
256 | // | |
257 | // now the inner field cage - only part of flanges (2 copies) | |
258 | // | |
259 | TGeoTube *tif1 = new TGeoTube(69.9,76.6774,1.5); | |
260 | TGeoVolume *v6 = new TGeoVolume("TPC_IFC1",tif1,m3); | |
261 | // | |
262 | //--------------------------------------------------------- | |
263 | // Tpc Inner Containment vessel - Muon side | |
264 | //--------------------------------------------------------- | |
265 | TGeoPcon *tcms = new TGeoPcon(0.,360.,10); | |
266 | // | |
267 | tcms->DefineSection(0,-259.1,68.1,74.2); | |
268 | tcms->DefineSection(1,-253.6,68.1,74.2); | |
269 | // | |
270 | tcms->DefineSection(2,-253.6,68.1,68.4); | |
271 | tcms->DefineSection(3,-74.0,60.9,61.2); | |
272 | // | |
273 | tcms->DefineSection(4,-74.0,60.1,61.2); | |
274 | tcms->DefineSection(5,-73.3,60.1,61.2); | |
275 | // | |
276 | tcms->DefineSection(6,-73.3,56.9,61.2); | |
277 | tcms->DefineSection(7,-73.0,56.9,61.2); | |
278 | // | |
279 | tcms->DefineSection(8,-73.0,56.9,58.8); | |
280 | tcms->DefineSection(9,-71.3,56.9,58.8); | |
281 | // | |
282 | TGeoVolume *v7 = new TGeoVolume("TPC_ICVM",tcms,m3); | |
283 | //----------------------------------------------- | |
284 | // inner containment vessel - shaft side | |
285 | //----------------------------------------------- | |
286 | TGeoPcon *tcss = new TGeoPcon(0.,360.,10); | |
287 | // | |
288 | tcss->DefineSection(0,71.3,56.9,58.8); | |
289 | tcss->DefineSection(1,73.0,56.9,58.8); | |
290 | // | |
291 | tcss->DefineSection(2,73.0,56.9,61.2); | |
292 | tcss->DefineSection(3,73.3,56.9,61.2); | |
293 | // | |
294 | tcss->DefineSection(4,73.3,60.1,61.2); | |
295 | tcss->DefineSection(5,74.0,60.1,61.2); | |
296 | // | |
297 | tcss->DefineSection(6,74.0,60.9,61.2); | |
298 | tcss->DefineSection(7,253.6,65.6,65.9); | |
299 | // | |
300 | tcss->DefineSection(8,253.6,65.6,74.2); | |
301 | tcss->DefineSection(9,258.1,65.6,74.2); | |
302 | // | |
303 | TGeoVolume *v8 = new TGeoVolume("TPC_ICVS",tcss,m3); | |
304 | //----------------------------------------------- | |
305 | // Inner field cage | |
306 | // define 4 parts and make an assembly | |
307 | //----------------------------------------------- | |
308 | // part1 - Al - 2 copies | |
309 | TGeoTube *t1 = new TGeoTube(76.6774,78.845,0.75); | |
310 | TGeoVolume *tv1 = new TGeoVolume("TPC_IFC2",t1,m3); | |
311 | // sandwich - outermost parts - 2 copies | |
312 | TGeoTube *t2 = new TGeoTube(76.6774,78.845,74.175); // tedlar 38 microns | |
313 | TGeoTube *t3 = new TGeoTube(76.6812,78.8412,74.175); // prepreg2 500 microns | |
314 | TGeoTube *t4 = new TGeoTube(76.7312,78.7912,74.175); // prepreg3 300 microns | |
315 | TGeoTube *t5 = new TGeoTube(76.7612,78.7612,74.175); // nomex 2 cm | |
316 | // | |
317 | TGeoVolume *tv2 = new TGeoVolume("TPC_IFC3",t2,sm2); | |
318 | TGeoVolume *tv3 = new TGeoVolume("TPC_IFC4",t3,sm3); | |
319 | TGeoVolume *tv4 = new TGeoVolume("TPC_IFC5",t4,sm5); | |
320 | TGeoVolume *tv5 = new TGeoVolume("TPC_IFC6",t5,sm4); | |
321 | // | |
322 | // middle parts - 2 copies | |
323 | TGeoTube *t6 = new TGeoTube(76.6774,78.795,5.); // tedlar 38 microns | |
324 | TGeoTube *t7 = new TGeoTube(76.6812,78.7912,5.); // prepreg2 250 microns | |
325 | TGeoTube *t8 = new TGeoTube(76.7062,78.7662,5.); // prepreg3 300 microns | |
326 | TGeoTube *t9 = new TGeoTube(76.7362,78.7362,5.); // nomex 2 cm | |
327 | // | |
328 | TGeoVolume *tv6 = new TGeoVolume("TPC_IFC7",t6,sm2); | |
329 | TGeoVolume *tv7 = new TGeoVolume("TPC_IFC8",t7,sm3); | |
330 | TGeoVolume *tv8 = new TGeoVolume("TPC_IFC9",t8,sm5); | |
331 | TGeoVolume *tv9 = new TGeoVolume("TPC_IFC10",t9,sm4); | |
332 | // central part - 1 copy | |
333 | TGeoTube *t10 = new TGeoTube(76.6774,78.745,93.75); // tedlar 38 microns | |
334 | TGeoTube *t11 = new TGeoTube(76.6812,78.7412,93.75); // prepreg3 300 microns | |
335 | TGeoTube *t12 = new TGeoTube(76.7112,78.7112,93.75); // nomex 2 cm | |
336 | // | |
337 | TGeoVolume *tv10 = new TGeoVolume("TPC_IFC11",t10,sm2); | |
338 | TGeoVolume *tv11 = new TGeoVolume("TPC_IFC12",t11,sm5); | |
339 | TGeoVolume *tv12 = new TGeoVolume("TPC_IFC13",t12,sm4); | |
340 | // | |
341 | // inner part - positioning | |
342 | // | |
343 | // creating a sandwich | |
344 | tv2->AddNode(tv3,1); tv3->AddNode(tv4,1); tv4->AddNode(tv5,1); | |
345 | // | |
346 | tv6->AddNode(tv7,1); tv7->AddNode(tv8,1); tv8->AddNode(tv9,1); | |
347 | // | |
348 | tv10->AddNode(tv11,1); tv11->AddNode(tv12,1); | |
349 | // | |
350 | TGeoVolumeAssembly *tv100 = new TGeoVolumeAssembly("TPC_IFC"); | |
351 | // | |
352 | tv100->AddNode(tv10,1); | |
353 | tv100->AddNode(tv6,1,new TGeoTranslation(0.,0.,-98.75)); | |
354 | tv100->AddNode(tv6,2,new TGeoTranslation(0.,0.,98.75)); | |
355 | tv100->AddNode(tv2,1,new TGeoTranslation(0.,0.,-177.925)); | |
356 | tv100->AddNode(tv2,2,new TGeoTranslation(0.,0.,177.925)); | |
357 | tv100->AddNode(tv1,1,new TGeoTranslation(0.,0.,-252.85)); | |
358 | tv100->AddNode(tv1,2,new TGeoTranslation(0.,0.,252.85)); | |
359 | // | |
360 | v5->AddNode(v6,1, new TGeoTranslation(0.,0.,-252.1)); | |
361 | v5->AddNode(v6,2, new TGeoTranslation(0.,0.,252.1)); | |
362 | v1->AddNode(v5,1); v1->AddNode(v7,1); v1->AddNode(v8,1); | |
363 | v9->AddNode(tv100,1); | |
364 | // | |
365 | // central drum | |
366 | // | |
367 | // flange + sandwich | |
368 | // | |
369 | TGeoPcon *cfl = new TGeoPcon(0.,360.,6); | |
370 | cfl->DefineSection(0,-71.1,59.7,61.2); | |
371 | cfl->DefineSection(1,-68.6,59.7,61.2); | |
372 | // | |
373 | cfl->DefineSection(2,-68.6,60.6324,61.2); | |
374 | cfl->DefineSection(3,68.6,60.6324,61.2); | |
375 | // | |
376 | cfl->DefineSection(4,68.6,59.7,61.2); | |
377 | cfl->DefineSection(5,71.1,59.7,61.2); | |
378 | // | |
379 | TGeoVolume *cflv = new TGeoVolume("TPC_CDR",cfl,m3); | |
380 | // sandwich | |
381 | TGeoTube *cd1 = new TGeoTube(60.6424,61.19,71.1); | |
382 | TGeoTube *cd2 = new TGeoTube(60.6462,61.1862,71.1); | |
383 | TGeoTube *cd3 = new TGeoTube(60.6662,61.1662,71.1); | |
384 | // | |
385 | TGeoMedium *sm6 = gGeoManager->GetMedium("TPC_Prepreg1"); | |
386 | TGeoVolume *cd1v = new TGeoVolume("TPC_CDR1",cd1,sm2); //tedlar | |
387 | TGeoVolume *cd2v = new TGeoVolume("TPC_CDR2",cd2,sm6);// prepreg1 | |
388 | TGeoVolume *cd3v = new TGeoVolume("TPC_CDR3",cd3,sm4); //nomex | |
389 | // | |
390 | // seals for central drum 2 copies | |
391 | // | |
392 | TGeoTube *cs = new TGeoTube(56.9,61.2,0.1); | |
393 | TGeoMedium *sm7 = gGeoManager->GetMedium("TPC_Mylar"); | |
394 | TGeoVolume *csv = new TGeoVolume("TPC_CDRS",cs,sm7); | |
395 | v1->AddNode(csv,1,new TGeoTranslation(0.,0.,-71.)); | |
396 | v1->AddNode(csv,2,new TGeoTranslation(0.,0.,71.)); | |
397 | // | |
398 | // seal collars | |
399 | TGeoPcon *se = new TGeoPcon(0.,360.,6); | |
400 | se->DefineSection(0,-72.8,59.7,61.2); | |
401 | se->DefineSection(1,-72.3,59.7,61.2); | |
402 | // | |
403 | se->DefineSection(2,-72.3,58.85,61.2); | |
404 | se->DefineSection(3,-71.6,58.85,61.2); | |
405 | // | |
406 | se->DefineSection(4,-71.6,59.7,61.2); | |
407 | se->DefineSection(5,-71.3,59.7,61.2); | |
408 | // | |
409 | TGeoVolume *sev = new TGeoVolume("TPC_CDCE",se,m3); | |
410 | // | |
411 | TGeoTube *si = new TGeoTube(56.9,58.8,1.); | |
412 | TGeoVolume *siv = new TGeoVolume("TPC_CDCI",si,m3); | |
413 | // | |
414 | // define reflection matrix | |
415 | // | |
416 | TGeoRotation *ref = new TGeoRotation("ref",90.,0.,90.,90.,180.,0.); | |
417 | // | |
418 | cd1v->AddNode(cd2v,1); cd2v->AddNode(cd3v,1); cflv->AddNode(cd1v,1); | |
419 | // | |
420 | v1->AddNode(siv,1,new TGeoTranslation(0.,0.,-69.9)); | |
421 | v1->AddNode(siv,2,new TGeoTranslation(0.,0.,69.9)); | |
422 | v1->AddNode(sev,1); v1->AddNode(sev,2,ref); v1->AddNode(cflv,1); | |
423 | // | |
424 | // central membrane - 2 rings and a mylar membrane - assembly | |
425 | // | |
426 | TGeoTube *ih = new TGeoTube(81.05,84.05,0.3); | |
427 | TGeoTube *oh = new TGeoTube(250.,256.,.5); | |
428 | TGeoTube *mem = new TGeoTube(84.05,250,0.01); | |
429 | TGeoVolume *ihv = new TGeoVolume("TPC_IHVH",ih,m3); | |
430 | TGeoVolume *ohv = new TGeoVolume("TPC_OHVH",oh,m3); | |
431 | TGeoVolume *memv = new TGeoVolume("TPC_HV",mem,sm7); | |
432 | // | |
433 | TGeoVolumeAssembly *cm = new TGeoVolumeAssembly("TPC_HVMEM"); | |
434 | cm->AddNode(ihv,1); | |
435 | cm->AddNode(ohv,1); | |
436 | cm->AddNode(memv,1); | |
437 | v9->AddNode(cm,1); | |
438 | // | |
439 | // end caps - they are make as an assembly of single segments | |
440 | // containing both readout chambers | |
441 | // | |
442 | Double_t openingAngle = 10.*TMath::DegToRad(); | |
443 | Double_t thick=1.5; // rib | |
444 | Double_t shift = thick/TMath::Sin(openingAngle); | |
445 | // | |
446 | Double_t lowEdge = 86.3; // hole in the wheel | |
447 | Double_t upEdge = 240.4; // hole in the wheel | |
448 | // | |
449 | new TGeoTubeSeg("sec",74.5,264.4,3.,0.,20.); | |
450 | // | |
451 | TGeoPgon *hole = new TGeoPgon("hole",0.,20.,1,4); | |
452 | // | |
453 | hole->DefineSection(0,-3.5,lowEdge-shift,upEdge-shift); | |
454 | hole->DefineSection(1,-1.5,lowEdge-shift,upEdge-shift); | |
455 | // | |
456 | hole->DefineSection(2,-1.5,lowEdge-shift,upEdge+3.-shift); | |
457 | hole->DefineSection(3,3.5,lowEdge-shift,upEdge+3.-shift); | |
458 | // | |
459 | Double_t ys = shift*TMath::Sin(openingAngle); | |
460 | Double_t xs = shift*TMath::Cos(openingAngle); | |
461 | TGeoTranslation *tr = new TGeoTranslation("tr",xs,ys,0.); | |
462 | tr->RegisterYourself(); | |
463 | TGeoCompositeShape *chamber = new TGeoCompositeShape("sec-hole:tr"); | |
464 | TGeoVolume *sv = new TGeoVolume("TPC_WSEG",chamber,m3); | |
465 | TGeoPgon *bar = new TGeoPgon("bar",0.,20.,1,2); | |
466 | bar->DefineSection(0,-3.,131.5-shift,136.5-shift); | |
467 | bar->DefineSection(1,1.5,131.5-shift,136.5-shift); | |
468 | TGeoVolume *barv = new TGeoVolume("TPC_WBAR",bar,m3); | |
469 | TGeoVolumeAssembly *ch = new TGeoVolumeAssembly("TPC_WCH");//empty segment | |
470 | // | |
471 | ch->AddNode(sv,1); ch->AddNode(barv,1,tr); | |
472 | // | |
473 | // readout chambers | |
474 | // | |
475 | // IROC first | |
476 | // | |
477 | TGeoTrd1 *ibody = new TGeoTrd1(13.8742,21.3328,4.29,21.15); | |
478 | TGeoVolume *ibdv = new TGeoVolume("TPC_IROCB",ibody,m3); | |
479 | // empty space | |
480 | TGeoTrd1 *emp = new TGeoTrd1(12.3742,19.8328,3.99,19.65); | |
481 | TGeoVolume *empv = new TGeoVolume("TPC_IROCE",emp,m1); | |
482 | ibdv->AddNode(empv,1,new TGeoTranslation(0.,-0.3,0.)); | |
483 | //bars | |
484 | Double_t tga = (19.8328-12.3742)/39.3; | |
485 | Double_t xmin,xmax; | |
486 | xmin = 9.55*tga+12.3742; | |
487 | xmax = 9.95*tga+12.3742; | |
488 | TGeoTrd1 *ib1 = new TGeoTrd1(xmin,xmax,3.29,0.2); | |
489 | TGeoVolume *ib1v = new TGeoVolume("TPC_IRB1",ib1,m3); | |
490 | empv->AddNode(ib1v,1,new TGeoTranslation("tt1",0.,0.7,-9.9)); | |
491 | xmin=19.4*tga+12.3742; | |
492 | xmax=19.9*tga+12.3742; | |
493 | TGeoTrd1 *ib2 = new TGeoTrd1(xmin,xmax,3.29,0.25); | |
494 | TGeoVolume *ib2v = new TGeoVolume("TPC_TRB2",ib2,m3); | |
495 | empv->AddNode(ib2v,1,new TGeoTranslation(0.,0.7,0.)); | |
496 | xmin=29.35*tga+12.3742; | |
497 | xmax=29.75*tga+12.3742; | |
498 | TGeoTrd1 *ib3 = new TGeoTrd1(xmin,xmax,3.29,0.2); | |
499 | TGeoVolume *ib3v = new TGeoVolume("TPC_IRB3",ib3,m3); | |
500 | empv->AddNode(ib3v,1,new TGeoTranslation(0.,0.7,9.9)); | |
501 | // | |
502 | // holes for connectors | |
503 | // | |
504 | TGeoBBox *conn = new TGeoBBox(0.4,0.3,4.675); // identical for iroc and oroc | |
505 | TGeoVolume *connv = new TGeoVolume("TPC_RCCON",conn,m1); | |
506 | TString fileName(gSystem->Getenv("ALICE_ROOT")); | |
507 | fileName += "/TPC/conn_iroc.dat"; | |
508 | ifstream in; | |
509 | in.open(fileName.Data(), ios_base::in); // asci file | |
510 | for(Int_t i =0;i<86;i++){ | |
511 | Double_t y = 3.99; | |
512 | Double_t x,z,ang; | |
513 | in>>x>>z>>ang; | |
514 | z-=26.5; | |
515 | TGeoRotation *rrr = new TGeoRotation(); | |
516 | rrr->RotateY(ang); | |
517 | TGeoCombiTrans *trans = new TGeoCombiTrans("trans",x,y,z,rrr); | |
518 | ibdv->AddNode(connv,i+1,trans); | |
519 | } | |
520 | in.close(); | |
521 | // "cap" | |
522 | new TGeoTrd1("icap",14.5974,23.3521,1.19,24.825); | |
523 | // "hole" | |
524 | new TGeoTrd1("ihole",13.8742,21.3328,1.2,21.15); | |
525 | TGeoTranslation *tr1 = new TGeoTranslation("tr1",0.,0.,1.725); | |
526 | tr1->RegisterYourself(); | |
527 | TGeoCompositeShape *ic = new TGeoCompositeShape("icap-ihole:tr1"); | |
528 | TGeoVolume *icv = new TGeoVolume("TPC_IRCAP",ic,m3); | |
529 | // | |
530 | // pad plane and wire fixations | |
531 | // | |
532 | TGeoTrd1 *pp = new TGeoTrd1(14.5974,23.3521,0.3,24.825); //pad+iso | |
533 | TGeoMedium *m4 = gGeoManager->GetMedium("TPC_G10"); | |
534 | TGeoVolume *ppv = new TGeoVolume("TPC_IRPP",pp,m4); | |
535 | TGeoPara *f1 = new TGeoPara(.6,.5,24.825,0.,-10.,0.); | |
536 | TGeoVolume *f1v = new TGeoVolume("TPC_IRF1",f1,m4); | |
537 | TGeoPara *f2 = new TGeoPara(.6,.5,24.825,0.,10.,0.); | |
538 | TGeoVolume *f2v = new TGeoVolume("TPC_IRF2",f2,m4); | |
539 | // | |
540 | TGeoVolumeAssembly *iroc = new TGeoVolumeAssembly("TPC_IROC"); | |
541 | // | |
542 | iroc->AddNode(ibdv,1); | |
543 | iroc->AddNode(icv,1,new TGeoTranslation(0.,3.1,-1.725)); | |
544 | iroc->AddNode(ppv,1,new TGeoTranslation(0.,4.59,-1.725)); | |
545 | tga =(23.3521-14.5974)/49.65; | |
546 | Double_t xx = 24.825*tga+14.5974-0.6; | |
547 | iroc->AddNode(f1v,1,new TGeoTranslation(-xx,5.39,-1.725)); | |
548 | iroc->AddNode(f2v,1,new TGeoTranslation(xx,5.39,-1.725)); | |
549 | // | |
550 | // OROC | |
551 | // | |
552 | TGeoTrd1 *obody = new TGeoTrd1(22.2938,40.5084,4.19,51.65); | |
553 | TGeoVolume *obdv = new TGeoVolume("TPC_OROCB",obody,m3); | |
554 | TGeoTrd1 *oemp = new TGeoTrd1(20.2938,38.5084,3.89,49.65); | |
555 | TGeoVolume *oempv = new TGeoVolume("TPC_OROCE",oemp,m1); | |
556 | obdv->AddNode(oempv,1,new TGeoTranslation(0.,-0.3,0.)); | |
557 | //horizontal bars | |
558 | tga=(38.5084-20.2938)/99.3; | |
559 | xmin=tga*10.2+20.2938; | |
560 | xmax=tga*10.6+20.2938; | |
561 | TGeoTrd1 *ob1 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
562 | TGeoVolume *ob1v = new TGeoVolume("TPC_ORB1",ob1,m3); | |
563 | // | |
564 | xmin=22.55*tga+20.2938; | |
565 | xmax=24.15*tga+20.2938; | |
566 | TGeoTrd1 *ob2 = new TGeoTrd1(xmin,xmax,2.915,0.8); | |
567 | TGeoVolume *ob2v = new TGeoVolume("TPC_ORB2",ob2,m3); | |
568 | // | |
569 | xmin=36.1*tga+20.2938; | |
570 | xmax=36.5*tga+20.2938; | |
571 | TGeoTrd1 *ob3 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
572 | TGeoVolume *ob3v = new TGeoVolume("TPC_ORB3",ob3,m3); | |
573 | // | |
574 | xmin=49.0*tga+20.2938; | |
575 | xmax=50.6*tga+20.2938; | |
576 | TGeoTrd1 *ob4 = new TGeoTrd1(xmin,xmax,2.915,0.8); | |
577 | TGeoVolume *ob4v = new TGeoVolume("TPC_ORB4",ob4,m3); | |
578 | // | |
579 | xmin=63.6*tga+20.2938; | |
580 | xmax=64.0*tga+20.2938; | |
581 | TGeoTrd1 *ob5 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
582 | TGeoVolume *ob5v = new TGeoVolume("TPC_ORB5",ob5,m3); | |
583 | // | |
584 | xmin=75.5*tga+20.2938; | |
585 | xmax=77.15*tga+20.2938; | |
586 | TGeoTrd1 *ob6 = new TGeoTrd1(xmin,xmax,2.915,0.8); | |
587 | TGeoVolume *ob6v = new TGeoVolume("TPC_ORB6",ob6,m3); | |
588 | // | |
589 | xmin=88.7*tga+20.2938; | |
590 | xmax=89.1*tga+20.2938; | |
591 | TGeoTrd1 *ob7 = new TGeoTrd1(xmin,xmax,2.915,0.2); | |
592 | TGeoVolume *ob7v = new TGeoVolume("TPC_ORB7",ob7,m3); | |
593 | // | |
594 | oempv->AddNode(ob1v,1,new TGeoTranslation(0.,0.975,-39.25)); | |
595 | oempv->AddNode(ob2v,1,new TGeoTranslation(0.,0.975,-26.3)); | |
596 | oempv->AddNode(ob3v,1,new TGeoTranslation(0.,0.975,-13.35)); | |
597 | oempv->AddNode(ob4v,1,new TGeoTranslation(0.,0.975,0.15)); | |
598 | oempv->AddNode(ob5v,1,new TGeoTranslation(0.,0.975,14.15)); | |
599 | oempv->AddNode(ob6v,1,new TGeoTranslation(0.,0.975,26.7)); | |
600 | oempv->AddNode(ob7v,1,new TGeoTranslation(0.,0.975,39.25)); | |
601 | // vertical bars | |
602 | TGeoBBox *ob8 = new TGeoBBox(0.8,2.915,5.1); | |
603 | TGeoBBox *ob9 = new TGeoBBox(0.8,2.915,5.975); | |
604 | TGeoBBox *ob10 = new TGeoBBox(0.8,2.915,5.775); | |
605 | TGeoBBox *ob11 = new TGeoBBox(0.8,2.915,6.25); | |
606 | TGeoBBox *ob12 = new TGeoBBox(0.8,2.915,6.5); | |
607 | // | |
608 | TGeoVolume *ob8v = new TGeoVolume("TPC_ORB8",ob8,m3); | |
609 | TGeoVolume *ob9v = new TGeoVolume("TPC_ORB9",ob9,m3); | |
610 | TGeoVolume *ob10v = new TGeoVolume("TPC_ORB10",ob10,m3); | |
611 | TGeoVolume *ob11v = new TGeoVolume("TPC_ORB11",ob11,m3); | |
612 | TGeoVolume *ob12v = new TGeoVolume("TPC_ORB12",ob12,m3); | |
613 | // | |
614 | oempv->AddNode(ob8v,1,new TGeoTranslation(0.,0.975,-44.55)); | |
615 | oempv->AddNode(ob8v,2,new TGeoTranslation(0.,0.975,44.55)); | |
616 | oempv->AddNode(ob9v,1,new TGeoTranslation(0.,0.975,-33.075)); | |
617 | oempv->AddNode(ob9v,2,new TGeoTranslation(0.,0.975,-19.525)); | |
618 | oempv->AddNode(ob10v,1,new TGeoTranslation(0.,0.975,20.125)); | |
619 | oempv->AddNode(ob10v,2,new TGeoTranslation(0.,0.975,33.275)); | |
620 | oempv->AddNode(ob11v,1,new TGeoTranslation(0.,0.975,-6.9)); | |
621 | oempv->AddNode(ob12v,1,new TGeoTranslation(0.,0.975,7.45)); | |
622 | // | |
623 | // holes for connectors | |
624 | // | |
625 | fileName = gSystem->Getenv("ALICE_ROOT"); | |
626 | fileName += "/TPC/conn_oroc.dat"; | |
627 | in.open(fileName.Data(), ios_base::in); // asci file | |
628 | for(Int_t i =0;i<78;i++){ | |
629 | Double_t y =3.89; | |
630 | Double_t x,z,ang; | |
631 | Double_t x1,z1,x2,z2; | |
632 | in>>x>>z>>ang; | |
633 | Double_t xr = 4.7*TMath::Sin(ang*TMath::DegToRad()); | |
634 | Double_t zr = 4.7*TMath::Cos(ang*TMath::DegToRad()); | |
635 | // | |
636 | x1=xr+x; x2=-xr+x; z1=zr+z; z2 = -zr+z; | |
637 | // | |
638 | TGeoRotation *rr = new TGeoRotation(); | |
639 | rr->RotateY(ang); | |
640 | z1-=54.95; | |
641 | z2-=54.95; | |
642 | TGeoCombiTrans *trans1 = new TGeoCombiTrans("trans1",x1,y,z1,rr); | |
643 | TGeoCombiTrans *trans2 = new TGeoCombiTrans("trans2",x2,y,z2,rr); | |
644 | obdv->AddNode(connv,i+1,trans1); | |
645 | obdv->AddNode(connv,i+79,trans2); | |
646 | } | |
647 | in.close(); | |
648 | // cap | |
649 | new TGeoTrd1("ocap",23.3874,43.5239,1.09,57.1); | |
650 | new TGeoTrd1("ohole",22.2938,40.5084,1.09,51.65); | |
651 | TGeoTranslation *tr5 = new TGeoTranslation("tr5",0.,0.,-2.15); | |
652 | tr5->RegisterYourself(); | |
653 | TGeoCompositeShape *oc = new TGeoCompositeShape("ocap-ohole:tr5"); | |
654 | TGeoVolume *ocv = new TGeoVolume("TPC_ORCAP",oc,m3); | |
655 | // | |
656 | // pad plane and wire fixations | |
657 | // | |
658 | TGeoTrd1 *opp = new TGeoTrd1(23.3874,43.5239,0.3,57.1); | |
659 | TGeoVolume *oppv = new TGeoVolume("TPC_ORPP",opp,m4); | |
660 | // | |
661 | tga=(43.5239-23.3874)/114.2; | |
662 | TGeoPara *f3 = new TGeoPara(.7,.6,57.1,0.,-10.,0.); | |
663 | TGeoPara *f4 = new TGeoPara(.7,.6,57.1,0.,10.,0.); | |
664 | xx = 57.1*tga+23.3874-0.7; | |
665 | TGeoVolume *f3v = new TGeoVolume("TPC_ORF1",f3,m4); | |
666 | TGeoVolume *f4v = new TGeoVolume("TPC_ORF2",f4,m4); | |
667 | // | |
668 | TGeoVolumeAssembly *oroc = new TGeoVolumeAssembly("TPC_OROC"); | |
669 | // | |
670 | oroc->AddNode(obdv,1); | |
671 | oroc->AddNode(ocv,1,new TGeoTranslation(0.,3.1,2.15)); | |
672 | oroc->AddNode(oppv,1,new TGeoTranslation(0.,4.49,2.15)); | |
673 | oroc->AddNode(f3v,1,new TGeoTranslation(-xx,5.39,2.15)); | |
674 | oroc->AddNode(f4v,1,new TGeoTranslation(xx,5.39,2.15)); | |
675 | // | |
676 | // now iroc and oroc are placed into a sector... | |
677 | // | |
678 | TGeoVolumeAssembly *secta = new TGeoVolumeAssembly("TPC_SECT"); // a-side | |
679 | TGeoVolumeAssembly *sectc = new TGeoVolumeAssembly("TPC_SECT"); // c-side | |
680 | TGeoRotation rot1("rot1",90.,90.,0.); | |
681 | TGeoRotation rot2("rot2"); | |
682 | rot2.RotateY(10.); | |
683 | TGeoRotation *rot = new TGeoRotation("rot"); | |
684 | *rot=rot1*rot2; | |
685 | // | |
686 | Double_t x0,y0; | |
687 | x0=110.2*TMath::Cos(openingAngle); | |
688 | y0=110.2*TMath::Sin(openingAngle); | |
20527578 | 689 | TGeoCombiTrans *combi1a = new TGeoCombiTrans("combi1",x0,y0,1.09+0.195,rot); //a-side |
690 | TGeoCombiTrans *combi1c = new TGeoCombiTrans("combi1",x0,y0,1.09+0.222,rot); //c-side | |
457e2170 | 691 | x0=188.45*TMath::Cos(openingAngle); |
692 | y0=188.45*TMath::Sin(openingAngle); | |
20527578 | 693 | TGeoCombiTrans *combi2a = new TGeoCombiTrans("combi2",x0,y0,0.99+0.195,rot); //a-side |
694 | TGeoCombiTrans *combi2c = new TGeoCombiTrans("combi2",x0,y0,0.99+0.222,rot); //c-side | |
457e2170 | 695 | // |
696 | // | |
697 | // A-side | |
698 | // | |
699 | secta->AddNode(ch,1); | |
700 | secta->AddNode(iroc,1,combi1a); | |
701 | secta->AddNode(oroc,1,combi2a); | |
702 | // | |
703 | // C-side | |
704 | // | |
705 | sectc->AddNode(ch,1); | |
706 | sectc->AddNode(iroc,1,combi1c); | |
707 | sectc->AddNode(oroc,1,combi2c); | |
708 | // | |
709 | // now I try to make wheels... | |
710 | // | |
711 | TGeoVolumeAssembly *wheela = new TGeoVolumeAssembly("TPC_ENDCAP"); | |
712 | TGeoVolumeAssembly *wheelc = new TGeoVolumeAssembly("TPC_ENDCAP"); | |
713 | // | |
714 | for(Int_t i =0;i<18;i++){ | |
715 | Double_t phi = (20.*i); | |
716 | TGeoRotation *r = new TGeoRotation(); | |
717 | r->RotateZ(phi); | |
718 | wheela->AddNode(secta,i+1,r); | |
719 | wheelc->AddNode(sectc,i+1,r); | |
720 | ||
721 | } | |
722 | // wheels in the drift volume! | |
723 | ||
724 | TGeoCombiTrans *combi3 = new TGeoCombiTrans("combi3",0.,0.,256.6,ref); | |
725 | v9->AddNode(wheela,1,combi3); | |
726 | v9->AddNode(wheelc,2,new TGeoTranslation(0.,0.,-256.6)); | |
727 | //_____________________________________________________________ | |
728 | // service support wheel | |
729 | //_____________________________________________________________ | |
730 | TGeoPgon *sw = new TGeoPgon(0.,20.,1,2); | |
731 | sw->DefineSection(0,-4.,80.5,251.75); | |
732 | sw->DefineSection(1,4.,80.5,251.75); | |
733 | TGeoVolume *swv = new TGeoVolume("TPC_SWSEG",sw,m3); //Al | |
734 | // | |
735 | thick=1.; | |
736 | shift = thick/TMath::Sin(openingAngle); | |
737 | TGeoPgon *sh = new TGeoPgon(0.,20.,1,2); | |
738 | sh->DefineSection(0,-4.,81.5-shift,250.75-shift); | |
739 | sh->DefineSection(1,4.,81.5-shift,250.75-shift); | |
740 | TGeoVolume *shv = new TGeoVolume("TPC_SWS1",sh,m1); //Air | |
741 | // | |
742 | TGeoMedium *m9 = gGeoManager->GetMedium("TPC_Si"); | |
743 | TGeoPgon *el = new TGeoPgon(0.,20.,1,2); | |
744 | el->DefineSection(0,-1.872,81.5-shift,250.75-shift); | |
745 | el->DefineSection(1,1.872,81.5-shift,250.75-shift); | |
746 | TGeoVolume *elv = new TGeoVolume("TPC_ELEC",el,m9); //Si | |
747 | // | |
748 | shv->AddNode(elv,1); | |
749 | // | |
750 | // | |
751 | ys = shift*TMath::Sin(openingAngle); | |
752 | xs = shift*TMath::Cos(openingAngle); | |
753 | swv->AddNode(shv,1,new TGeoTranslation(xs,ys,0.)); | |
754 | // cover | |
755 | TGeoPgon *co = new TGeoPgon(0.,20.,1,2); | |
756 | co->DefineSection(0,-0.5,77.,255.25); | |
757 | co->DefineSection(1,0.5,77.,255.25); | |
758 | TGeoVolume *cov = new TGeoVolume("TPC_SWC1",co,m3);//Al | |
759 | // hole in a cover | |
760 | TGeoPgon *coh = new TGeoPgon(0.,20.,1,2); | |
761 | shift=4./TMath::Sin(openingAngle); | |
762 | coh->DefineSection(0,-0.5,85.-shift,247.25-shift); | |
763 | coh->DefineSection(1,0.5,85.-shift,247.25-shift); | |
764 | // | |
765 | TGeoVolume *cohv = new TGeoVolume("TPC_SWC2",coh,m1); | |
766 | // | |
767 | ys = shift*TMath::Sin(openingAngle); | |
768 | xs = shift*TMath::Cos(openingAngle); | |
769 | cov->AddNode(cohv,1,new TGeoTranslation(xs,ys,0.)); | |
770 | // | |
771 | // Sector as an Assembly | |
772 | // | |
773 | TGeoVolumeAssembly *swhs = new TGeoVolumeAssembly("TPC_SSWSEC"); | |
774 | swhs->AddNode(swv,1); | |
775 | swhs->AddNode(cov,1,new TGeoTranslation(0.,0.,-4.5)); | |
776 | swhs->AddNode(cov,2,new TGeoTranslation(0.,0.,4.5)); | |
777 | // | |
778 | // SSW as an Assembly of sectors | |
779 | // | |
780 | TGeoVolumeAssembly *swheel = new TGeoVolumeAssembly("TPC_SSWHEEL"); | |
781 | for(Int_t i =0;i<18;i++){ | |
782 | Double_t phi = (20.*i); | |
783 | TGeoRotation *r = new TGeoRotation(); | |
784 | r->RotateZ(phi); | |
785 | swheel->AddNode(swhs,i+1,r); | |
786 | } | |
787 | v1->AddNode(swheel,1,new TGeoTranslation(0.,0.,-284.6)); | |
788 | v1->AddNode(swheel,2,new TGeoTranslation(0.,0.,284.6)); | |
789 | ||
790 | // sensitive strips - strip "0" is always set | |
791 | // conditional | |
792 | Int_t totrows; | |
793 | totrows = fTPCParam->GetNRowLow() + fTPCParam->GetNRowUp(); | |
794 | Double_t *upar; | |
795 | upar=NULL; | |
796 | gGeoManager->Volume("TPC_Strip","PGON",m5->GetId(),upar); | |
797 | upar=new Double_t [10]; | |
798 | upar[0]=0.; | |
799 | upar[1]=360.; | |
800 | upar[2]=18.; | |
801 | upar[3]=2.; | |
802 | // | |
803 | upar[4]=-124.8; | |
804 | upar[7]=124.8; | |
805 | ||
806 | Double_t rlow=fTPCParam->GetPadRowRadiiLow(0); | |
807 | ||
808 | upar[5]=rlow; | |
809 | upar[6]=rlow+.01; | |
810 | upar[8]=upar[5]; | |
811 | upar[9]=upar[6]; | |
812 | // | |
813 | gGeoManager->Node("TPC_Strip",1,"TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); | |
814 | gGeoManager->Node("TPC_Strip",totrows+1, | |
815 | "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); | |
816 | // | |
817 | // now, strips optionally | |
818 | // | |
819 | if(fSens){ | |
820 | //lower sectors | |
821 | for(Int_t i=2;i<fTPCParam->GetNRowLow()+1;i++){ | |
822 | rlow=fTPCParam->GetPadRowRadiiLow(i-1); | |
823 | upar[5]=rlow; | |
824 | upar[6]=rlow+.01; | |
825 | upar[8]=upar[5]; | |
826 | upar[9]=upar[6]; | |
827 | gGeoManager->Node("TPC_Strip",i, | |
828 | "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); | |
829 | gGeoManager->Node("TPC_Strip",totrows+i, | |
830 | "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); | |
831 | } | |
832 | //upper sectors | |
833 | for(Int_t i=1;i<fTPCParam->GetNRowUp()+1;i++){ | |
834 | rlow=fTPCParam->GetPadRowRadiiUp(i-1); | |
835 | upar[5]=rlow; | |
836 | upar[6]=rlow+.01; | |
837 | upar[8]=upar[5]; | |
838 | upar[9]=upar[6]; | |
839 | gGeoManager->Node("TPC_Strip",i+fTPCParam->GetNRowLow(), | |
840 | "TPC_Drift",0.,0.,124.82,0,kTRUE,upar,10); | |
841 | gGeoManager->Node("TPC_Strip",totrows+i+fTPCParam->GetNRowLow(), | |
842 | "TPC_Drift",0.,0.,-124.82,0,kTRUE,upar,10); | |
843 | } | |
844 | }//strips | |
845 | //---------------------------------------------------------- | |
846 | // TPc Support Rods - MAKROLON | |
847 | //---------------------------------------------------------- | |
848 | TGeoMedium *m6=gGeoManager->GetMedium("TPC_Makrolon"); | |
849 | TGeoMedium *m7=gGeoManager->GetMedium("TPC_Cu"); | |
850 | // upper and lower rods differ in length! | |
851 | delete [] upar; | |
852 | upar=NULL; | |
853 | gGeoManager->Volume("TPC_Rod","TUBE",m6->GetId(),upar); | |
854 | upar=new Double_t [3]; | |
855 | upar[0]=1.8; | |
856 | upar[1]=2.2; | |
857 | ||
858 | // | |
859 | //HV rods - makrolon + 0.58cm (diameter) Cu | |
860 | TGeoTube *hvr = new TGeoTube(0.,2.2,126.64); | |
861 | TGeoTube *hvc = new TGeoTube(0.,0.29,126.64); | |
862 | // | |
863 | TGeoVolume *hvrv = new TGeoVolume("TPC_HV_Rod",hvr,m6); | |
864 | TGeoVolume *hvcv = new TGeoVolume("TPC_HV_Cable",hvc,m7); | |
865 | hvrv->AddNode(hvcv,1); | |
866 | ||
867 | for(Int_t i=0;i<18;i++){ | |
868 | Double_t angle,x,y; | |
869 | Double_t z,r; | |
870 | angle=TMath::DegToRad()*20.*(Double_t)i; | |
871 | r=81.5; | |
872 | x=r * TMath::Cos(angle); | |
873 | y=r * TMath::Sin(angle); | |
874 | upar[2]=126.64; //lower | |
875 | z= 126.96; | |
876 | if(i==15){ | |
877 | v9->AddNode(hvrv,1,new TGeoTranslation(x,y,z)); | |
878 | v9->AddNode(hvrv,2,new TGeoTranslation(x,y,-z)); | |
879 | } | |
880 | else{ | |
881 | gGeoManager->Node("TPC_Rod",i+1,"TPC_Drift",x,y,z,0,kTRUE,upar,3);//shaft | |
882 | gGeoManager->Node("TPC_Rod",i+19,"TPC_Drift",x,y,-z,0,kTRUE,upar,3);//muon | |
883 | } | |
884 | r=254.25; | |
885 | x=r * TMath::Cos(angle); | |
886 | y=r * TMath::Sin(angle); | |
887 | upar[2]=126.54; //upper | |
888 | z=127.06; | |
889 | gGeoManager->Node("TPC_Rod",i+37,"TPC_Drift",x,y,z,0,kTRUE,upar,3); | |
890 | gGeoManager->Node("TPC_Rod",i+55,"TPC_Drift",x,y,-z,0,kTRUE,upar,3); | |
891 | } | |
892 | ||
893 | TGeoVolume *alice = gGeoManager->GetVolume("ALIC"); | |
894 | alice->AddNode(v1,1); | |
895 | ||
896 | } // end of function | |
897 | ||
898 | //_____________________________________________________________________________ | |
899 | void AliTPCv4::AddAlignableVolumes() const | |
900 | { | |
901 | // | |
902 | // Create entries for alignable volumes associating the symbolic volume | |
903 | // name with the corresponding volume path. Needs to be syncronized with | |
904 | // eventual changes in the geometry. | |
905 | // | |
906 | SetInnerChambersAlignable(); | |
907 | SetOuterChambersAlignable(); | |
908 | } | |
909 | ||
910 | //_____________________________________________________________________________ | |
911 | void AliTPCv4::SetInnerChambersAlignable() const | |
912 | { | |
913 | // | |
914 | Int_t modnum = 0; | |
915 | TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_"; | |
916 | TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_"; | |
917 | TString vpappend = "/TPC_IROC_1"; | |
918 | TString snstr1="TPC/EndcapA/Sector"; | |
919 | TString snstr2="TPC/EndcapC/Sector"; | |
920 | TString snappend="/InnerChamber"; | |
921 | TString volpath, symname; | |
922 | ||
923 | for(Int_t cnt=1; cnt<=18; cnt++){ | |
924 | volpath = vpstr1; | |
925 | volpath += cnt; | |
926 | volpath += vpappend; | |
927 | symname = snstr1; | |
928 | symname += cnt; | |
929 | symname += snappend; | |
930 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) | |
931 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
932 | // | |
933 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); | |
934 | const char *path = alignableEntry->GetTitle(); | |
935 | if (!gGeoManager->cd(path)) | |
936 | AliFatal(Form("Volume path %s not valid!",path)); | |
937 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
938 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,cnt-1); | |
939 | alignableEntry->SetMatrix(matTtoL); | |
940 | modnum++; | |
941 | } | |
942 | ||
943 | for(Int_t cnt=1; cnt<=18; cnt++){ | |
944 | volpath = vpstr2; | |
945 | volpath += cnt; | |
946 | volpath += vpappend; | |
947 | symname = snstr2; | |
948 | symname += cnt; | |
949 | symname += snappend; | |
950 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) | |
951 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
952 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); | |
953 | const char *path = alignableEntry->GetTitle(); | |
954 | if (!gGeoManager->cd(path)) | |
955 | AliFatal(Form("Volume path %s not valid!",path)); | |
956 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
957 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,18+cnt-1); | |
958 | alignableEntry->SetMatrix(matTtoL); | |
959 | modnum++; | |
960 | } | |
961 | } | |
962 | ||
963 | //_____________________________________________________________________________ | |
964 | void AliTPCv4::SetOuterChambersAlignable() const | |
965 | { | |
966 | // | |
967 | Int_t modnum = 0; | |
968 | TString vpstr1 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_1/TPC_SECT_"; | |
969 | TString vpstr2 = "ALIC_1/TPC_M_1/TPC_Drift_1/TPC_ENDCAP_2/TPC_SECT_"; | |
970 | TString vpappend = "/TPC_OROC_1"; | |
971 | TString snstr1="TPC/EndcapA/Sector"; | |
972 | TString snstr2="TPC/EndcapC/Sector"; | |
973 | TString snappend="/OuterChamber"; | |
974 | TString volpath, symname; | |
975 | ||
976 | for(Int_t cnt=1; cnt<=18; cnt++){ | |
977 | volpath = vpstr1; | |
978 | volpath += cnt; | |
979 | volpath += vpappend; | |
980 | symname = snstr1; | |
981 | symname += cnt; | |
982 | symname += snappend; | |
983 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) | |
984 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
985 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); | |
986 | const char *path = alignableEntry->GetTitle(); | |
987 | if (!gGeoManager->cd(path)) | |
988 | AliFatal(Form("Volume path %s not valid!",path)); | |
989 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
990 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+cnt-1); | |
991 | alignableEntry->SetMatrix(matTtoL); | |
992 | modnum++; | |
993 | } | |
994 | ||
995 | for(Int_t cnt=1; cnt<=18; cnt++){ | |
996 | volpath = vpstr2; | |
997 | volpath += cnt; | |
998 | volpath += vpappend; | |
999 | symname = snstr2; | |
1000 | symname += cnt; | |
1001 | symname += snappend; | |
1002 | if(!gGeoManager->SetAlignableEntry(symname.Data(),volpath.Data())) | |
1003 | AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", symname.Data(),volpath.Data())); | |
1004 | TGeoPNEntry *alignableEntry = gGeoManager->GetAlignableEntry(symname.Data()); | |
1005 | const char *path = alignableEntry->GetTitle(); | |
1006 | if (!gGeoManager->cd(path)) | |
1007 | AliFatal(Form("Volume path %s not valid!",path)); | |
1008 | TGeoHMatrix* globMatrix = gGeoManager->GetCurrentMatrix(); | |
1009 | TGeoHMatrix* matTtoL = fTPCParam->Tracking2LocalMatrix(globMatrix,36+18+cnt-1); | |
1010 | alignableEntry->SetMatrix(matTtoL); | |
1011 | modnum++; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | //_____________________________________________________________________________ | |
1016 | void AliTPCv4::DrawDetector() const | |
1017 | { | |
1018 | // | |
1019 | // Draw a shaded view of the Time Projection Chamber version 1 | |
1020 | // | |
1021 | ||
1022 | // Set everything unseen | |
1023 | gMC->Gsatt("*", "seen", -1); | |
1024 | // | |
1025 | // Set ALIC mother transparent | |
1026 | gMC->Gsatt("ALIC","SEEN",0); | |
1027 | // | |
1028 | // Set the volumes visible | |
1029 | // | |
1030 | ||
1031 | gMC->Gsatt("TPC ","SEEN",0); | |
1032 | gMC->Gsatt("TOIN","SEEN",1); | |
1033 | gMC->Gsatt("TOIN","COLO",7); | |
1034 | gMC->Gsatt("TOCV","SEEN",1); | |
1035 | gMC->Gsatt("TOCV","COLO",4); | |
1036 | gMC->Gsatt("TSA1","SEEN",0); | |
1037 | gMC->Gsatt("TSA2","SEEN",0); | |
1038 | gMC->Gsatt("TSA3","SEEN",0); | |
1039 | gMC->Gsatt("TSA4","SEEN",0); | |
1040 | gMC->Gsatt("TSA5","SEEN",0); | |
1041 | gMC->Gsatt("TOFC","SEEN",1); | |
1042 | gMC->Gsatt("TOFC","COLO",4); | |
1043 | gMC->Gsatt("TSA6","SEEN",0); | |
1044 | gMC->Gsatt("TSA7","SEEN",0); | |
1045 | gMC->Gsatt("TSA8","SEEN",0); | |
1046 | gMC->Gsatt("TIIN","SEEN",1); | |
1047 | gMC->Gsatt("TIIN","COLO",7); | |
1048 | gMC->Gsatt("TII1","SEEN",0); | |
1049 | gMC->Gsatt("TIFC","SEEN",1); | |
1050 | gMC->Gsatt("TIFC","COLO",4); | |
1051 | gMC->Gsatt("TSA9","SEEN",0); | |
1052 | gMC->Gsatt("TS10","SEEN",0); | |
1053 | gMC->Gsatt("TS11","SEEN",0); | |
1054 | gMC->Gsatt("TS12","SEEN",0); | |
1055 | gMC->Gsatt("TS13","SEEN",0); | |
1056 | gMC->Gsatt("TS14","SEEN",0); | |
1057 | gMC->Gsatt("TICC","SEEN",0); | |
1058 | gMC->Gsatt("TICM","SEEN",0); | |
1059 | gMC->Gsatt("TS15","SEEN",0); | |
1060 | gMC->Gsatt("TS16","SEEN",0); | |
1061 | gMC->Gsatt("TS17","SEEN",0); | |
1062 | gMC->Gsatt("TS18","SEEN",0); | |
1063 | gMC->Gsatt("TS19","SEEN",0); | |
1064 | gMC->Gsatt("TPJ1","SEEN",0); | |
1065 | gMC->Gsatt("TPJ2","SEEN",0); | |
1066 | gMC->Gsatt("TICS","SEEN",0); | |
1067 | gMC->Gsatt("TDGN","SEEN",0); | |
1068 | gMC->Gsatt("TIRC","SEEN",0); | |
1069 | gMC->Gsatt("TIC1","SEEN",1); | |
1070 | gMC->Gsatt("TIPP","SEEN",0); | |
1071 | gMC->Gsatt("TIC3","SEEN",0); | |
1072 | gMC->Gsatt("TRCE","SEEN",0); | |
1073 | gMC->Gsatt("TPSC","SEEN",0); | |
1074 | gMC->Gsatt("TPCC","SEEN",0); | |
1075 | gMC->Gsatt("TORC","SEEN",0); | |
1076 | gMC->Gsatt("TOPP","SEEN",0); | |
1077 | gMC->Gsatt("TOC3","SEEN",0); | |
1078 | gMC->Gsatt("TOC1","SEEN",1); | |
1079 | gMC->Gsatt("TSSW","SEEN",1); | |
1080 | gMC->Gsatt("TSWC","SEEN",1); | |
1081 | gMC->Gsatt("TSSW","COLO",3); | |
1082 | gMC->Gsatt("TSWC","COLO",3); | |
1083 | gMC->Gsatt("TSCE","COLO",6); | |
1084 | gMC->Gsatt("TSCE","SEEN",1); | |
1085 | gMC->Gsatt("TWES","SEEN",0); | |
1086 | gMC->Gsatt("TSWB","SEEN",0); | |
1087 | gMC->Gsatt("TPEL","SEEN",0); | |
1088 | gMC->Gsatt("TPMW","SEEN",1); | |
1089 | gMC->Gsatt("TESR","SEEN",1); | |
1090 | gMC->Gsatt("TPMW","COLO",12); | |
1091 | gMC->Gsatt("TIC1","COLO",5); | |
1092 | gMC->Gsatt("TOC1","COLO",5); | |
1093 | gMC->Gsatt("TESB","SEEN",0); | |
1094 | gMC->Gsatt("THVM","SEEN",1); | |
1095 | gMC->Gsatt("THVM","COLO",11); | |
1096 | gMC->Gsatt("THVH","SEEN",0); | |
1097 | gMC->Gsatt("TPSR","SEEN",0); | |
1098 | gMC->Gsatt("THVL","SEEN",0); | |
1099 | gMC->Gsatt("THVC","SEEN",0); | |
1100 | gMC->Gsatt("THVE","SEEN",0); | |
1101 | gMC->Gsatt("THVR","SEEN",0); | |
1102 | gMC->Gsatt("TPSS","SEEN",0); | |
1103 | gMC->Gsatt("TPUS","SEEN",0); | |
1104 | gMC->Gsatt("TPLS","SEEN",0); | |
1105 | ||
1106 | // | |
1107 | gMC->Gdopt("hide", "on"); | |
1108 | gMC->Gdopt("shad", "on"); | |
1109 | gMC->Gsatt("*", "fill", 7); | |
1110 | gMC->SetClipBox("."); | |
1111 | gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.); | |
1112 | gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.); | |
1113 | gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.); | |
1114 | gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.); | |
1115 | gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290); | |
1116 | gMC->DefaultRange(); | |
1117 | gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025); | |
1118 | gMC->Gdhead(1111, "Time Projection Chamber"); | |
1119 | gMC->Gdman(18, 4, "MAN"); | |
1120 | gMC->Gdopt("hide","off"); | |
1121 | } | |
1122 | ||
1123 | //_____________________________________________________________________________ | |
1124 | void AliTPCv4::CreateMaterials() | |
1125 | { | |
1126 | // | |
1127 | // Define materials for version 2 of the Time Projection Chamber | |
1128 | // | |
1129 | ||
1130 | AliTPC::CreateMaterials(); | |
1131 | } | |
1132 | ||
1133 | //_____________________________________________________________________________ | |
1134 | void AliTPCv4::Init() | |
1135 | { | |
1136 | // | |
1137 | // Initialises version 2 of the TPC after that it has been built | |
1138 | // | |
1139 | ||
1140 | Int_t *idtmed = fIdtmed->GetArray(); | |
1141 | ||
1142 | AliTPC::Init(); | |
1143 | ||
1144 | ||
1145 | fIdSens=gMC->VolId("TPC_Strip"); // one strip is always selected... | |
1146 | ||
1147 | fIDrift=gMC->VolId("TPC_Drift"); | |
1148 | fSecOld=-100; // fake number | |
1149 | ||
d9888f70 | 1150 | gMC->SetMaxNStep(-30000); // max. number of steps increased |
457e2170 | 1151 | |
20527578 | 1152 | gMC->Gstpar(idtmed[20],"LOSS",6); // specific energy loss |
457e2170 | 1153 | |
1154 | AliInfo("*** TPC version 4 initialized ***"); | |
1155 | AliInfo(Form("Maximum number of steps = %d",gMC->GetMaxNStep())); | |
1156 | ||
1157 | // | |
1158 | ||
1159 | } | |
1160 | ||
1161 | //_____________________________________________________________________________ | |
1162 | void AliTPCv4::StepManager() | |
1163 | { | |
1164 | // | |
1165 | // Called for every step in the Time Projection Chamber | |
1166 | // | |
1167 | ||
1168 | // | |
1169 | // parameters used for the energy loss calculations | |
1170 | // | |
1171 | const Float_t kprim = 14.35; // number of primary collisions per 1 cm | |
1172 | const Float_t kpoti = 20.77e-9; // first ionization potential for Ne/CO2 | |
1173 | const Float_t kwIon = 35.97e-9; // energy for the ion-electron pair creation | |
1174 | ||
1175 | ||
1176 | const Float_t kbig = 1.e10; | |
1177 | ||
1178 | Int_t id,copy; | |
1179 | Float_t hits[5]; | |
1180 | Int_t vol[2]; | |
1181 | TLorentzVector p; | |
1182 | ||
1183 | vol[1]=0; // preset row number to 0 | |
1184 | // | |
1185 | gMC->SetMaxStep(kbig); | |
1186 | ||
1187 | ||
1188 | ||
1189 | Float_t charge = gMC->TrackCharge(); | |
1190 | ||
1191 | if(TMath::Abs(charge)<=0.) return; // take only charged particles | |
1192 | ||
1193 | // check the sensitive volume | |
1194 | ||
1195 | id = gMC->CurrentVolID(copy); // vol ID and copy number (starts from 1!) | |
1196 | if(id != fIDrift && id != fIdSens) return; // not in the sensitive folume | |
1197 | ||
1198 | gMC->TrackPosition(p); | |
1199 | Double_t r = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]); | |
1200 | // | |
1201 | ||
1202 | // | |
1203 | Double_t angle = TMath::ACos(p[0]/r); | |
1204 | angle = (p[1]<0.) ? TMath::TwoPi()-angle : angle; | |
1205 | // | |
1206 | // angular segment, it is not a real sector number... | |
1207 | // | |
1208 | Int_t sector=TMath::Nint((angle-fTPCParam->GetInnerAngleShift())/ | |
1209 | fTPCParam->GetInnerAngle()); | |
1210 | // rotate to segment "0" | |
1211 | Float_t cos,sin; | |
1212 | fTPCParam->AdjustCosSin(sector,cos,sin); | |
1213 | Float_t x1=p[0]*cos + p[1]*sin; | |
1214 | // check if within sector's limits | |
1215 | if(x1>=fTPCParam->GetInnerRadiusLow()&&x1<=fTPCParam->GetInnerRadiusUp() | |
1216 | ||x1>=fTPCParam->GetOuterRadiusLow()&&x1<=fTPCParam->GetOuterRadiusUp()){ | |
1217 | // calculate real sector number... | |
1218 | if (x1>fTPCParam->GetOuterRadiusLow()){ | |
1219 | sector = TMath::Nint((angle-fTPCParam->GetOuterAngleShift())/ | |
1220 | fTPCParam->GetOuterAngle())+fTPCParam->GetNInnerSector(); | |
1221 | if (p[2]<0) sector+=(fTPCParam->GetNOuterSector()>>1); | |
1222 | } | |
1223 | else | |
1224 | if (p[2]<0) sector+=(fTPCParam->GetNInnerSector()>>1); | |
1225 | // | |
1226 | // here I have a sector number | |
1227 | // | |
1228 | ||
1229 | vol[0]=sector; | |
1230 | // check if change of sector | |
1231 | if(sector != fSecOld){ | |
1232 | fSecOld=sector; | |
1233 | // add track reference | |
20527578 | 1234 | AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber()); |
457e2170 | 1235 | } |
1236 | // track is in the sensitive strip | |
1237 | if(id == fIdSens){ | |
1238 | // track is entering the strip | |
1239 | if (gMC->IsTrackEntering()){ | |
1240 | Int_t totrows = fTPCParam->GetNRowLow()+fTPCParam->GetNRowUp(); | |
1241 | vol[1] = (copy<=totrows) ? copy-1 : copy-1-totrows; | |
1242 | // row numbers are autonomous for lower and upper sectors | |
1243 | if(vol[0] > fTPCParam->GetNInnerSector()) { | |
1244 | vol[1] -= fTPCParam->GetNRowLow(); | |
1245 | } | |
1246 | // | |
1247 | if(vol[0]<fTPCParam->GetNInnerSector()&&vol[1] == 0){ | |
1248 | ||
1249 | // lower sector, row 0, because Jouri wants to have this | |
1250 | ||
1251 | gMC->TrackMomentum(p); | |
1252 | hits[0]=p[0]; | |
1253 | hits[1]=p[1]; | |
1254 | hits[2]=p[2]; | |
1255 | hits[3]=0.; // this hit has no energy loss | |
1256 | // Get also the track time for pileup simulation | |
1257 | hits[4]=gMC->TrackTime(); | |
1258 | ||
1259 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); | |
1260 | } | |
1261 | // | |
1262 | ||
1263 | gMC->TrackPosition(p); | |
1264 | hits[0]=p[0]; | |
1265 | hits[1]=p[1]; | |
1266 | hits[2]=p[2]; | |
1267 | hits[3]=0.; // this hit has no energy loss | |
1268 | // Get also the track time for pileup simulation | |
1269 | hits[4]=gMC->TrackTime(); | |
1270 | ||
1271 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); | |
1272 | ||
1273 | } | |
1274 | else return; | |
1275 | } | |
1276 | //----------------------------------------------------------------- | |
1277 | // charged particle is in the sensitive drift volume | |
1278 | //----------------------------------------------------------------- | |
1279 | ||
1280 | if(gMC->TrackStep() > 0){ | |
1281 | ||
1282 | Int_t nel = (Int_t)(((gMC->Edep())-kpoti)/kwIon) + 1; | |
20527578 | 1283 | nel=TMath::Min(nel,30); // 30 electrons corresponds to 1 keV |
457e2170 | 1284 | // |
1285 | gMC->TrackPosition(p); | |
1286 | hits[0]=p[0]; | |
1287 | hits[1]=p[1]; | |
1288 | hits[2]=p[2]; | |
1289 | hits[3]=(Float_t)nel; | |
1290 | ||
1291 | // Add this hit | |
1292 | ||
1293 | if (fHitType&&2){ | |
1294 | gMC->TrackMomentum(p); | |
1295 | Float_t momentum = TMath::Sqrt(p[0]*p[0]+p[1]*p[1]); | |
1296 | Float_t precision = (momentum>0.1) ? 0.002 :0.01; | |
1297 | fTrackHits->SetHitPrecision(precision); | |
1298 | } | |
1299 | ||
1300 | // Get also the track time for pileup simulation | |
1301 | hits[4]=gMC->TrackTime(); | |
1302 | ||
1303 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol,hits); | |
1304 | ||
1305 | } // step>0 | |
1306 | } //within sector's limits | |
1307 | // Stemax calculation for the next step | |
1308 | if(!gMC->IsTrackAlive()) return; // particle has disappeared | |
1309 | Float_t pp; | |
1310 | TLorentzVector mom; | |
1311 | gMC->TrackMomentum(mom); | |
1312 | Float_t ptot=mom.Rho(); | |
1313 | Float_t betaGamma = ptot/gMC->TrackMass(); | |
1314 | ||
1315 | Int_t pid=gMC->TrackPid(); | |
1316 | if((pid==kElectron || pid==kPositron) && ptot > 0.002) | |
1317 | { | |
1318 | pp = kprim*1.58; // electrons above 20 MeV/c are on the plateau! | |
1319 | } | |
1320 | else | |
1321 | { | |
1322 | ||
1323 | betaGamma = TMath::Max(betaGamma,(Float_t)7.e-3); // protection against too small bg | |
1324 | pp=kprim*BetheBloch(betaGamma); | |
1325 | ||
1326 | if(TMath::Abs(charge) > 1.) pp *= (charge*charge); | |
1327 | } | |
1328 | ||
1329 | Double_t rnd = gMC->GetRandom()->Rndm(); | |
1330 | ||
1331 | gMC->SetMaxStep(-TMath::Log(rnd)/pp); | |
1332 | ||
1333 | ||
1334 | } | |
1335 | ||
1336 | //_____________________________________________________________________________ | |
1337 | Float_t AliTPCv4::BetheBloch(Float_t bg) | |
1338 | { | |
1339 | // | |
1340 | // Bethe-Bloch energy loss formula | |
1341 | // | |
1342 | const Double_t kp1=0.76176e-1; | |
1343 | const Double_t kp2=10.632; | |
1344 | const Double_t kp3=0.13279e-4; | |
1345 | const Double_t kp4=1.8631; | |
1346 | const Double_t kp5=1.9479; | |
1347 | ||
1348 | Double_t dbg = (Double_t) bg; | |
1349 | ||
1350 | Double_t beta = dbg/TMath::Sqrt(1.+dbg*dbg); | |
1351 | ||
1352 | Double_t aa = TMath::Power(beta,kp4); | |
1353 | Double_t bb = TMath::Power(1./dbg,kp5); | |
1354 | ||
1355 | bb=TMath::Log(kp3+bb); | |
1356 | ||
1357 | return ((Float_t)((kp2-aa-bb)*kp1/aa)); | |
1358 | } | |
1359 | ||
1360 |