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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 | ||
16 | /* | |
17 | $Log$ | |
4fc5ed2d | 18 | Revision 1.7 2000/07/10 16:07:18 fca |
19 | Release version of ITS code | |
20 | ||
b2340bbf | 21 | Revision 1.3.4.2 2000/03/04 23:43:57 nilsen |
22 | Fixed up the comments/documentation. | |
23 | ||
24 | Revision 1.3.4.1 2000/01/12 19:03:32 nilsen | |
25 | This is the version of the files after the merging done in December 1999. | |
26 | See the ReadMe110100.txt file for details | |
27 | ||
28 | Revision 1.3 1999/09/29 09:24:20 fca | |
29 | Introduction of the Copyright and cvs Log | |
30 | ||
4c039060 | 31 | */ |
32 | ||
58005f18 | 33 | |
34 | #include <TMath.h> | |
35 | #include <TRandom.h> | |
36 | #include <TVector.h> | |
37 | #include <TGeometry.h> | |
38 | #include <TNode.h> | |
39 | #include <TTUBE.h> | |
4fc5ed2d | 40 | #include "TParticle.h" |
58005f18 | 41 | |
b2340bbf | 42 | #include "AliRun.h" |
58005f18 | 43 | #include "AliITS.h" |
4fc5ed2d | 44 | #include "AliITSgeom.h" |
58005f18 | 45 | #include "AliITShit.h" |
58005f18 | 46 | |
47 | ||
48 | ClassImp(AliITShit) | |
49 | //////////////////////////////////////////////////////////////////////// | |
50 | // Version: 0 | |
51 | // Written by Rene Brun, Federico Carminati, and Roberto Barbera | |
52 | // | |
53 | // Version: 1 | |
54 | // Modified and documented by Bjorn S. Nilsen | |
55 | // July 11 1999 | |
56 | // | |
57 | // AliITShit is the hit class for the ITS. Hits are the information | |
58 | // that comes from a Monte Carlo at each step as a particle mass through | |
59 | // sensitive detector elements as particles are transported through a | |
60 | // detector. | |
61 | // | |
62 | //Begin_Html | |
63 | /* | |
a92b2b7d | 64 | <img src="picts/ITS/AliITShit_Class_Diagram.gif"> |
58005f18 | 65 | </pre> |
66 | <br clear=left> | |
67 | <font size=+2 color=red> | |
68 | <p>This show the relasionships between the ITS hit class and the rest of Aliroot. | |
69 | </font> | |
70 | <pre> | |
71 | */ | |
72 | //End_Html | |
b2340bbf | 73 | //////////////////////////////////////////////////////////////////////// |
74 | // Inline Member functions: | |
75 | // | |
76 | // AliITShit() | |
77 | // The default creator of the AliITShit class. | |
78 | // | |
79 | // ~AliITShit() | |
80 | // The default destructor of the AliITShit class. | |
81 | // | |
82 | // int GetTrack() | |
83 | // See AliHit for a full description. Returns the track number fTrack | |
84 | // for this hit. | |
85 | // | |
86 | // SetTrack(int track) | |
87 | // See AliHit for a full description. Sets the track number fTrack | |
88 | // for this hit. | |
89 | // | |
90 | // Int_t GetTrackStatus() | |
91 | // Returns the value of the track status flag fStatus. This flag | |
92 | // indicates the track status at the time of creating this hit. It is | |
93 | // made up of the following 8 status bits from highest order to lowest | |
94 | // order bits | |
95 | // 0 : IsTrackAlive(): IsTrackStop():IsTrackDisappeared(): | |
96 | // IsTrackOut():IsTrackExiting():IsTrackEntering():IsTrackInside() . | |
97 | // See AliMC for a description of these functions. If the function is | |
98 | // true then the bit is set to one, otherwise it is zero. | |
99 | // | |
100 | // Bool_t StatusInside() | |
101 | // Returns kTRUE if the particle producing this hit is still inside | |
102 | // the present volume. Returns kFalse if this particle will be in another | |
103 | // volume. {bit IsTrackInside is set or not} | |
104 | // | |
105 | // Bool_t StatusEntering() | |
106 | // Returns kTRUE if the particle producing this hit is has just enterd | |
107 | // the present volume. Returns kFalse otherwise. {bit IsTrackEntering is | |
108 | // set or not} | |
109 | // | |
110 | // Bool_t StatusExiting() | |
111 | // Returns kTRUE if the particle producing this hit is will exit | |
112 | // the present volume. Returns kFalse otherwise. {bit IsTrackExiting is set | |
113 | // or not} | |
114 | // | |
115 | // Bool_t StatusOut() | |
116 | // Returns kTRUE if the particle producing this hit is goint exit the | |
117 | // simulation. Returns kFalse otherwise. {bit IsTrackOut is set or not} | |
118 | // | |
119 | // Bool_t StatusDisappeared() | |
120 | // Returns kTRUE if the particle producing this hit is going to "disappear" | |
121 | // for example it has interacted producing some other particles. Returns | |
122 | // kFalse otherwise. {bit IsTrackOut is set or not} | |
123 | // | |
124 | // Bool_t StatusStop() | |
125 | // Returns kTRUE if the particle producing this hit is has dropped below | |
126 | // its energy cut off producing some other particles. Returns kFalse otherwise. | |
127 | // {bit IsTrackOut is set or not} | |
128 | // | |
129 | // Bool_t StatuAlives() | |
130 | // Returns kTRUE if the particle producing this hit is going to continue | |
131 | // to be transported. Returns kFalse otherwise. {bit IsTrackOut is set or not} | |
132 | // | |
133 | // Int_t GetLayer() | |
134 | // Returns the layer number, fLayer, for this hit. | |
135 | // | |
136 | // Int_t GetLadder() | |
137 | // Returns the ladder number, fLadder, for this hit. | |
138 | // | |
139 | // Int_t GetDetector() | |
140 | // Returns the detector number, fDet, for this hit. | |
141 | // | |
142 | // GetDetectorID(Int_t &layer, Int_t &ladder, Int_t &detector) | |
143 | // Returns the layer, ladder, and detector numbers, fLayer fLadder fDet, | |
144 | // in one call. | |
145 | // | |
146 | // Float_t GetIonization() | |
147 | // Returns the energy lost, fDestep, by the particle creating this hit, | |
148 | // in the units defined by the Monte Carlo. | |
149 | // | |
150 | // GetPositionG(Float_t &x, Float_t &y, Float_t &z) | |
151 | // Returns the global position, fX fY fZ, of this hit, in the units | |
152 | // define by the Monte Carlo. | |
153 | // | |
154 | // GetPositionG(Double_t &x, Double_t &y, Double_t &z) | |
155 | // Returns the global position, fX fY fZ, of this hit, in the units | |
156 | // define by the Monte Carlo. | |
157 | // | |
158 | // GetPositionG(Float_t &x, Float_t &y, Float_t &z, Float_t &tof) | |
159 | // Returns the global position and time of flight, fX fY fZ fTof, of | |
160 | // this hit, in the units define by the Monte Carlo. | |
161 | // | |
162 | // GetPositionG(Double_t &x,Double_t &y,Double_t &z,Double_t &tof) | |
163 | // Returns the global position and time of flight, fX fY fZ fTof, of | |
164 | // this hit, in the units define by the Monte Carlo. | |
165 | // | |
166 | // GetPositionL(Double_t &x,Double_t &y,Double_t &z) | |
167 | // Returns the local position, fX fY fZ, of this hit in the coordiante | |
168 | // of this module, in the units define by the Monte Carlo. | |
169 | // | |
170 | // GetPositionG(Double_t &x,Double_t &y,Double_t &z,Double_t &tof) | |
171 | // Returns the local position and time of flight, fX fY fZ fTof, of | |
172 | // this hit in the coordinates of this module, in the units define by the | |
173 | // Monte Carlo. | |
174 | // | |
175 | // Float_t GetXG() | |
176 | // Returns the global x position in the units defined by the Monte Carlo. | |
177 | // | |
178 | // Float_t GetYG() | |
179 | // Returns the global y position in the units defined by the Monte Carlo. | |
180 | // | |
181 | // Float_t GetYG() | |
182 | // Returns the global z position in the units defined by the Monte Carlo. | |
183 | // | |
184 | // Float_t GetTOF() | |
185 | // Returns the time of flight, fTof, of this hit, in the units defined | |
186 | // by the Monte Carlo. | |
187 | // | |
188 | // GetMomentumG(Float_t &px, Float_t &py, Float_t &pz) | |
189 | // Returns the global momentum, fPx fPy fPz, of the particle that made | |
190 | // this hit, in the units define by the Monte Carlo. | |
191 | // | |
192 | // GetMomentumG(Double_t &px,Double_t &py,Double_t &pz) | |
193 | // Returns the global momentum, fPx fPy fPz, of the particle that made | |
194 | // this hit, in the units define by the Monte Carlo. | |
195 | // | |
196 | // GetMomentumL(Double_t &px,Double_t &py,Double_t &pz) | |
197 | // Returns the momentum, fPx fPy fPz in coordinate appropreate for this | |
198 | // specific module, in the units define by the Monte Carlo. | |
199 | // | |
200 | // Float_t GetPXG() | |
201 | // Returns the global X momentum in the units defined by the Monte Carlo. | |
202 | // | |
203 | // Float_t GetPYG() | |
204 | // Returns the global Y momentum in the units defined by the Monte Carlo. | |
205 | // | |
206 | // Float_t GetPZG() | |
207 | // Returns the global Z momentum in the units defined by the Monte Carlo. | |
208 | // | |
209 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 210 | //_____________________________________________________________________________ |
211 | AliITShit::AliITShit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits): | |
b2340bbf | 212 | AliHit(shunt, track){ |
213 | //////////////////////////////////////////////////////////////////////// | |
214 | // Create ITS hit | |
215 | // The creator of the AliITShit class. The variables shunt and | |
216 | // track are passed to the creator of the AliHit class. See the AliHit | |
217 | // class for a full description. the integer array *vol contains, in order, | |
218 | // fLayer = vol[0], fDet = vol[1], fLadder = vol[2], fStatus = vol[3]. | |
219 | // The array *hits contains, in order, fX = hits[0], fY = hits[1], | |
220 | // fZ = hits[2], fPx = hits[3], fPy = hits[4], fPz = hits[5], | |
221 | // fDestep = hits[6], and fTof = hits[7]. In the units of the Monte Carlo | |
222 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 223 | fLayer = vol[0]; // Layer number |
224 | fLadder = vol[2]; // Ladder number | |
225 | fDet = vol[1]; // Detector number | |
226 | fStatus = vol[3]; // Track status flags | |
227 | fX = hits[0]; // Track X position | |
228 | fY = hits[1]; // Track Y position | |
229 | fZ = hits[2]; // Track Z position | |
230 | fPx = hits[3]; // Track X Momentum | |
231 | fPy = hits[4]; // Track Y Momentum | |
232 | fPz = hits[5]; // Track Z Momentum | |
233 | fDestep = hits[6]; // Track dE/dx for this step | |
234 | fTof = hits[7]; // Track Time of Flight for this step | |
235 | } | |
b2340bbf | 236 | //______________________________________________________________________ |
58005f18 | 237 | void AliITShit::GetPositionL(Float_t &x,Float_t &y,Float_t &z){ |
b2340bbf | 238 | //////////////////////////////////////////////////////////////////////// |
239 | // Returns the position of this hit in the local coordinates of this | |
240 | // module, and in the units of the Monte Carlo. | |
241 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 242 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); |
243 | Float_t g[3],l[3]; | |
244 | ||
245 | g[0] = fX; | |
246 | g[1] = fY; | |
247 | g[2] = fZ; | |
4fc5ed2d | 248 | if(gm) { |
249 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
250 | x = l[0]; | |
251 | y = l[1]; | |
252 | z = l[2]; | |
253 | } else { | |
254 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
255 | // AliITSv7 - SDD case | |
256 | x=fX; | |
257 | y=fZ; | |
258 | z=fY; | |
259 | } | |
58005f18 | 260 | return; |
261 | } | |
b2340bbf | 262 | //______________________________________________________________________ |
58005f18 | 263 | void AliITShit::GetPositionL(Float_t &x,Float_t &y,Float_t &z,Float_t &tof){ |
b2340bbf | 264 | //////////////////////////////////////////////////////////////////////// |
265 | // Returns the position and time of flight of this hit in the local | |
266 | // coordinates of this module, and in the units of the Monte Carlo. | |
267 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 268 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); |
269 | Float_t g[3],l[3]; | |
270 | ||
271 | g[0] = fX; | |
272 | g[1] = fY; | |
273 | g[2] = fZ; | |
4fc5ed2d | 274 | if(gm) { |
275 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
276 | x = l[0]; | |
277 | y = l[1]; | |
278 | z = l[2]; | |
279 | } else { | |
280 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
281 | // AliITSv7 - SDD case | |
282 | x=fX; | |
283 | y=fZ; | |
284 | z=fY; | |
285 | } | |
58005f18 | 286 | tof = fTof; |
287 | return; | |
288 | } | |
b2340bbf | 289 | //______________________________________________________________________ |
58005f18 | 290 | Float_t AliITShit::GetXL(){ |
b2340bbf | 291 | //////////////////////////////////////////////////////////////////////// |
292 | // Returns the x position of this hit in the local coordinates of this | |
293 | // module, and in the units of the Monte Carlo. | |
294 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 295 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); |
296 | Float_t g[3],l[3]; | |
297 | ||
298 | g[0] = fX; | |
299 | g[1] = fY; | |
300 | g[2] = fZ; | |
4fc5ed2d | 301 | if(gm) { |
302 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
303 | return l[0]; | |
304 | } else { | |
305 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
306 | return fX; | |
307 | } | |
58005f18 | 308 | } |
b2340bbf | 309 | //______________________________________________________________________ |
58005f18 | 310 | Float_t AliITShit::GetYL(){ |
b2340bbf | 311 | //////////////////////////////////////////////////////////////////////// |
312 | // Returns the y position of this hit in the local coordinates of this | |
313 | // module, and in the units of the Monte Carlo. | |
314 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 315 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); |
316 | Float_t g[3],l[3]; | |
317 | ||
318 | g[0] = fX; | |
319 | g[1] = fY; | |
320 | g[2] = fZ; | |
4fc5ed2d | 321 | if (gm) { |
322 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
323 | return l[1]; | |
324 | } else { | |
325 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
326 | return fZ; | |
327 | } | |
58005f18 | 328 | } |
b2340bbf | 329 | //______________________________________________________________________ |
58005f18 | 330 | Float_t AliITShit::GetZL(){ |
b2340bbf | 331 | //////////////////////////////////////////////////////////////////////// |
332 | // Returns the z position of this hit in the local coordinates of this | |
333 | // module, and in the units of the Monte Carlo. | |
334 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 335 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); |
336 | Float_t g[3],l[3]; | |
337 | ||
338 | g[0] = fX; | |
339 | g[1] = fY; | |
340 | g[2] = fZ; | |
4fc5ed2d | 341 | if(gm) { |
342 | gm->GtoL(fLayer,fLadder,fDet,g,l); | |
343 | return l[2]; | |
344 | } else { | |
345 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
346 | return fY; | |
347 | } | |
58005f18 | 348 | } |
b2340bbf | 349 | //______________________________________________________________________ |
58005f18 | 350 | void AliITShit::GetMomentumL(Float_t &px,Float_t &py,Float_t &pz){ |
b2340bbf | 351 | //////////////////////////////////////////////////////////////////////// |
352 | // Returns the momentum of this hit in the local coordinates of this | |
353 | // module, and in the units of the Monte Carlo. | |
354 | //////////////////////////////////////////////////////////////////////// | |
58005f18 | 355 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); |
356 | Float_t g[3],l[3]; | |
357 | ||
358 | g[0] = fPx; | |
359 | g[1] = fPy; | |
360 | g[2] = fPz; | |
4fc5ed2d | 361 | if (gm) { |
362 | gm->GtoLMomentum(fLayer,fLadder,fDet,g,l); | |
363 | px = l[0]; | |
364 | py = l[1]; | |
365 | pz = l[2]; | |
366 | } else { | |
367 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
368 | px=fPx; | |
369 | py=fPy; | |
370 | pz=fPz; | |
371 | } | |
58005f18 | 372 | return; |
373 | } | |
b2340bbf | 374 | //______________________________________________________________________ |
375 | Float_t AliITShit::GetPXL(){ | |
376 | //////////////////////////////////////////////////////////////////////// | |
377 | // Returns the X momentum of this hit in the local coordinates of this | |
378 | // module, and in the units of the Monte Carlo. | |
379 | //////////////////////////////////////////////////////////////////////// | |
380 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
381 | Float_t g[3],l[3]; | |
382 | ||
383 | g[0] = fPx; | |
384 | g[1] = fPy; | |
385 | g[2] = fPz; | |
4fc5ed2d | 386 | if (gm) { |
387 | gm->GtoLMomentum(fLayer,fLadder,fDet,g,l); | |
388 | return l[0]; | |
389 | } else { | |
390 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
391 | return fPx; | |
392 | } | |
b2340bbf | 393 | } |
394 | //______________________________________________________________________ | |
395 | Float_t AliITShit::GetPYL(){ | |
396 | //////////////////////////////////////////////////////////////////////// | |
397 | // Returns the Y momentum of this hit in the local coordinates of this | |
398 | // module, and in the units of the Monte Carlo. | |
399 | //////////////////////////////////////////////////////////////////////// | |
400 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
401 | Float_t g[3],l[3]; | |
402 | ||
403 | g[0] = fPx; | |
404 | g[1] = fPy; | |
405 | g[2] = fPz; | |
4fc5ed2d | 406 | if (gm) { |
407 | gm->GtoLMomentum(fLayer,fLadder,fDet,g,l); | |
408 | return l[1]; | |
409 | } else { | |
410 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
411 | return fPy; | |
412 | } | |
413 | ||
b2340bbf | 414 | } |
415 | //______________________________________________________________________ | |
416 | Float_t AliITShit::GetPZL(){ | |
417 | //////////////////////////////////////////////////////////////////////// | |
418 | // Returns the Z momentum of this hit in the local coordinates of this | |
419 | // module, and in the units of the Monte Carlo. | |
420 | //////////////////////////////////////////////////////////////////////// | |
421 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
422 | Float_t g[3],l[3]; | |
423 | ||
424 | g[0] = fPx; | |
425 | g[1] = fPy; | |
426 | g[2] = fPz; | |
4fc5ed2d | 427 | if (gm) { |
428 | gm->GtoLMomentum(fLayer,fLadder,fDet,g,l); | |
429 | return l[2]; | |
430 | } else { | |
431 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
432 | return fPz; | |
433 | } | |
434 | ||
b2340bbf | 435 | } |
436 | //___________________________________________________________________________; | |
437 | Int_t AliITShit::GetModule(){ | |
438 | //////////////////////////////////////////////////////////////////////// | |
439 | // Returns the module index number of the module where this hit was in. | |
440 | //////////////////////////////////////////////////////////////////////// | |
441 | AliITSgeom *gm = ((AliITS*)gAlice->GetDetector("ITS"))->GetITSgeom(); | |
442 | ||
4fc5ed2d | 443 | if (gm) return gm->GetModuleIndex(fLayer,fLadder,fDet); |
444 | else { | |
445 | Error("AliITShit","NULL pointer to the geometry! return smth else",gm); | |
446 | return 0; | |
447 | } | |
b2340bbf | 448 | } |
449 | //______________________________________________________________________ | |
450 | TParticle * AliITShit::GetParticle(){ | |
451 | //////////////////////////////////////////////////////////////////////// | |
452 | // Returns the pointer to the TParticle for the particle that created | |
453 | // this hit. From the TParticle all kinds of information about this | |
454 | // particle can be found. See the TParticle class. | |
455 | //////////////////////////////////////////////////////////////////////// | |
fc743205 | 456 | TClonesArray *parts = gAlice->Particles(); |
457 | return ((TParticle*)parts->UncheckedAt(this->GetTrack())); | |
b2340bbf | 458 | } |
459 | //___________________________________________________________________________ | |
460 | void AliITShit::Streamer(TBuffer &R__b){ | |
461 | //////////////////////////////////////////////////////////////////////// | |
462 | // The streamer function for this AliITShit class. This has been set | |
463 | // up so that future changes to this class can be easly incorporated. | |
464 | //////////////////////////////////////////////////////////////////////// | |
465 | if (R__b.IsReading()) { | |
466 | Version_t R__v = R__b.ReadVersion(); | |
467 | if (R__v==1) { | |
468 | AliHit::Streamer(R__b); | |
469 | R__b >> fStatus; | |
470 | R__b >> fLayer; | |
471 | R__b >> fLadder; | |
472 | R__b >> fDet; | |
473 | R__b >> fPx; | |
474 | R__b >> fPy; | |
475 | R__b >> fPz; | |
476 | R__b >> fDestep; | |
477 | R__b >> fTof; | |
478 | }else{ // for futrue changes to this class. | |
479 | } // end if R__v==1 | |
480 | } else { | |
481 | R__b.WriteVersion(AliITShit::IsA()); | |
482 | AliHit::Streamer(R__b); | |
483 | R__b << fStatus; | |
484 | R__b << fLayer; | |
485 | R__b << fLadder; | |
486 | R__b << fDet; | |
487 | R__b << fPx; | |
488 | R__b << fPy; | |
489 | R__b << fPz; | |
490 | R__b << fDestep; | |
491 | R__b << fTof; | |
492 | } // end if R__b.IsReading() | |
493 | } |