]>
Commit | Line | Data |
---|---|---|
1a1fdef7 | 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 | /* $Id$ */ | |
17 | ||
18 | //____________________________________________________________________ | |
19 | // | |
20 | // Forward Multiplicity Detector based on Silicon wafers. | |
21 | // | |
22 | // This class is a singleton that handles the geometry parameters of | |
23 | // the FMD detectors. | |
24 | // | |
25 | // The actual code is done by various separate classes. Below is | |
26 | // diagram showing the relationship between the various FMD classes | |
27 | // that handles the geometry | |
28 | // | |
29 | // +------------+ | |
30 | // +- | AliFMDRing | | |
31 | // 2 | +------------+ | |
32 | // +----------------+<>--+ | | |
33 | // | AliFMDGeometry | ^ | |
34 | // +----------------+<>--+ V 1..2 | |
35 | // 3 | +----------------+ | |
36 | // +-| AliFMDDetector | | |
37 | // +----------------+ | |
38 | // ^ | |
39 | // | | |
40 | // +-------------+-------------+ | |
41 | // | | | | |
42 | // +---------+ +---------+ +---------+ | |
43 | // | AliFMD1 | | AliFMD2 | | AliFMD3 | | |
44 | // +---------+ +---------+ +---------+ | |
45 | // | |
46 | // | |
47 | // * AliFMDRing | |
48 | // This class contains all stuff needed to do with a ring. It's | |
49 | // used by the AliFMDDetector objects to instantise inner and | |
50 | // outer rings. The AliFMDRing objects are shared by the | |
51 | // AliFMDDetector objects, and owned by the AliFMDv1 object. | |
52 | // | |
53 | // * AliFMD1, AliFMD2, and AliFMD3 | |
54 | // These are specialisation of AliFMDDetector, that contains the | |
55 | // particularities of each of the sub-detector system. It is | |
56 | // envisioned that the classes should also define the support | |
57 | // volumes and material for each of the detectors. | |
58 | // | |
59 | // | |
60 | #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H | |
61 | #include "AliFMDRing.h" // ALIFMDRING_H | |
62 | #include "AliFMD1.h" // ALIFMD1_H | |
63 | #include "AliFMD2.h" // ALIFMD2_H | |
64 | #include "AliFMD3.h" // ALIFMD2_H | |
65 | #include "AliRecPoint.h" // ALIRECPOINT_H | |
66 | #include "AliLog.h" // ALIRECPOINT_H | |
67 | #include <TVector3.h> // ROOT_TVector3 | |
68 | #include <TMatrix.h> // ROOT_TMatrix | |
69 | #include <TParticle.h> // ROOT_TParticle | |
70 | #include <Riostream.h> | |
54e415a8 | 71 | #ifndef USE_PRE_MOVE |
72 | #include "AliFMDGeometryBuilder.h" | |
73 | #include <TArrayI.h> | |
74 | #include <TGeoManager.h> | |
75 | #include <TGeoVolume.h> | |
76 | #include <TGeoNode.h> | |
77 | static Int_t FindNodeDepth(const char* name, const char* volname); | |
78 | #endif | |
79 | ||
1a1fdef7 | 80 | |
81 | //==================================================================== | |
82 | ClassImp(AliFMDGeometry) | |
83 | #if 0 | |
84 | ; // This is here to keep Emacs for indenting the next line | |
85 | #endif | |
86 | ||
87 | //____________________________________________________________________ | |
88 | AliFMDGeometry* AliFMDGeometry::fgInstance = 0; | |
89 | ||
90 | //____________________________________________________________________ | |
91 | AliFMDGeometry* | |
92 | AliFMDGeometry::Instance() | |
93 | { | |
69b696b9 | 94 | // Return (newly created) singleton instance |
1a1fdef7 | 95 | if (!fgInstance) fgInstance = new AliFMDGeometry; |
96 | return fgInstance; | |
97 | } | |
98 | ||
99 | //____________________________________________________________________ | |
100 | AliFMDGeometry::AliFMDGeometry() | |
101 | : AliGeometry("FMD", "Forward multiplicity") | |
102 | { | |
69b696b9 | 103 | // PROTECTED |
104 | // Default constructor | |
54e415a8 | 105 | fUseFMD1 = kTRUE; |
106 | fUseFMD2 = kTRUE; | |
107 | fUseFMD3 = kTRUE; | |
108 | #ifndef USE_PRE_MOVE | |
109 | fDetailed = kTRUE; | |
110 | fUseAssembly = kTRUE; | |
111 | #endif | |
1a1fdef7 | 112 | fInner = new AliFMDRing('I'); |
113 | fOuter = new AliFMDRing('O'); | |
114 | fFMD1 = new AliFMD1(fInner); | |
115 | fFMD2 = new AliFMD2(fInner, fOuter); | |
116 | fFMD3 = new AliFMD3(fInner, fOuter); | |
117 | fIsInitialized = kFALSE; | |
54e415a8 | 118 | // fActive.Set(4); |
119 | #ifndef USE_PRE_MOVE | |
120 | fActive.Reset(-1); | |
121 | #endif | |
1a1fdef7 | 122 | } |
123 | ||
69b696b9 | 124 | //____________________________________________________________________ |
125 | AliFMDGeometry::AliFMDGeometry(const AliFMDGeometry& other) | |
126 | : AliGeometry(other), | |
127 | fIsInitialized(other.fIsInitialized), | |
128 | fInner(other.fInner), | |
129 | fOuter(other.fOuter), | |
130 | fFMD1(other.fFMD1), | |
131 | fFMD2(other.fFMD2), | |
132 | fFMD3(other.fFMD3), | |
133 | fUseFMD1(other.fUseFMD1), | |
134 | fUseFMD2(other.fUseFMD2), | |
135 | fUseFMD3(other.fUseFMD3) | |
54e415a8 | 136 | #ifndef USE_PRE_MOVE |
137 | , fActive(other.fActive), | |
138 | fDetailed(other.fDetailed), | |
139 | fUseAssembly(other.fUseAssembly) | |
140 | #endif | |
69b696b9 | 141 | { |
142 | // PROTECTED | |
143 | // Copy constructor | |
144 | } | |
145 | ||
146 | ||
147 | ||
148 | //____________________________________________________________________ | |
149 | AliFMDGeometry& | |
150 | AliFMDGeometry::operator=(const AliFMDGeometry& other) | |
151 | { | |
152 | // PROTECTED | |
153 | // Assignment operator | |
154 | fUseFMD1 = other.fUseFMD1; | |
155 | fUseFMD2 = other.fUseFMD2; | |
156 | fUseFMD3 = other.fUseFMD3; | |
157 | fFMD1 = other.fFMD1; | |
158 | fFMD2 = other.fFMD2; | |
159 | fFMD3 = other.fFMD3; | |
160 | fInner = other.fInner; | |
161 | fOuter = other.fOuter; | |
162 | fIsInitialized = other.fIsInitialized; | |
163 | return *this; | |
164 | } | |
165 | ||
1a1fdef7 | 166 | //____________________________________________________________________ |
167 | void | |
168 | AliFMDGeometry::Init() | |
169 | { | |
69b696b9 | 170 | // Initialize the the singleton if not done so already |
1a1fdef7 | 171 | if (fIsInitialized) return; |
172 | fInner->Init(); | |
173 | fOuter->Init(); | |
174 | fFMD1->Init(); | |
175 | fFMD2->Init(); | |
176 | fFMD3->Init(); | |
177 | } | |
178 | ||
54e415a8 | 179 | #ifndef USE_PRE_MOVE |
180 | //____________________________________________________________________ | |
181 | void | |
182 | AliFMDGeometry::Build() | |
183 | { | |
184 | if (!fBuilder) fBuilder = new AliFMDGeometryBuilder(fDetailed); | |
185 | fBuilder->SetDetailed(fDetailed); | |
186 | fBuilder->UseAssembly(fUseAssembly); | |
187 | fBuilder->Exec(); | |
188 | } | |
189 | ||
190 | //____________________________________________________________________ | |
191 | void | |
192 | AliFMDGeometry::SetActive(Int_t* active, Int_t n) | |
193 | { | |
194 | fActive.Set(n); | |
195 | for (Int_t i = 0; i < n; i++) fActive[i] = active[i]; | |
196 | } | |
197 | ||
198 | //____________________________________________________________________ | |
199 | void | |
200 | AliFMDGeometry::AddActive(Int_t active) | |
201 | { | |
202 | Int_t n = fActive.fN; | |
203 | fActive.Set(n+1); | |
204 | fActive[n] = active; | |
205 | } | |
206 | ||
207 | //____________________________________________________________________ | |
208 | Bool_t | |
209 | AliFMDGeometry::IsActive(Int_t vol) const | |
210 | { | |
211 | for (Int_t i = 0; i < fActive.fN; i++) | |
212 | if (fActive[i] == vol) return kTRUE; | |
213 | return kFALSE; | |
214 | } | |
215 | ||
216 | #endif | |
217 | ||
1a1fdef7 | 218 | //____________________________________________________________________ |
219 | AliFMDDetector* | |
220 | AliFMDGeometry::GetDetector(Int_t i) const | |
221 | { | |
69b696b9 | 222 | // Get the ith detector. i should be one of 1, 2, or 3. If an |
223 | // invalid value is passed, 0 (NULL) is returned. | |
1a1fdef7 | 224 | switch (i) { |
225 | case 1: return fUseFMD1 ? static_cast<AliFMDDetector*>(fFMD1) : 0; | |
226 | case 2: return fUseFMD2 ? static_cast<AliFMDDetector*>(fFMD2) : 0; | |
227 | case 3: return fUseFMD3 ? static_cast<AliFMDDetector*>(fFMD3) : 0; | |
228 | } | |
229 | return 0; | |
230 | } | |
231 | ||
232 | //____________________________________________________________________ | |
233 | AliFMDRing* | |
234 | AliFMDGeometry::GetRing(Char_t i) const | |
235 | { | |
69b696b9 | 236 | // Get the ith ring. i should be one of 'I' or 'O' (case |
237 | // insensitive). If an invalid parameter is passed, 0 (NULL) is | |
238 | // returned. | |
1a1fdef7 | 239 | switch (i) { |
240 | case 'I': | |
241 | case 'i': return fInner; | |
242 | case 'O': | |
243 | case 'o': return fOuter; | |
244 | } | |
245 | return 0; | |
246 | } | |
247 | ||
248 | //____________________________________________________________________ | |
249 | void | |
250 | AliFMDGeometry::Enable(Int_t i) | |
251 | { | |
69b696b9 | 252 | // Enable the ith detector. i should be one of 1, 2, or 3 |
1a1fdef7 | 253 | switch (i) { |
254 | case 1: fUseFMD1 = kTRUE; break; | |
255 | case 2: fUseFMD2 = kTRUE; break; | |
256 | case 3: fUseFMD3 = kTRUE; break; | |
257 | } | |
258 | } | |
259 | ||
260 | //____________________________________________________________________ | |
261 | void | |
262 | AliFMDGeometry::Disable(Int_t i) | |
263 | { | |
69b696b9 | 264 | // Disable the ith detector. i should be one of 1, 2, or 3 |
1a1fdef7 | 265 | switch (i) { |
266 | case 1: fUseFMD1 = kFALSE; break; | |
267 | case 2: fUseFMD2 = kFALSE; break; | |
268 | case 3: fUseFMD3 = kFALSE; break; | |
269 | } | |
270 | } | |
271 | ||
272 | //____________________________________________________________________ | |
273 | void | |
274 | AliFMDGeometry::Detector2XYZ(UShort_t detector, | |
69b696b9 | 275 | Char_t ring, |
276 | UShort_t sector, | |
277 | UShort_t strip, | |
278 | Double_t& x, | |
279 | Double_t& y, | |
280 | Double_t& z) const | |
1a1fdef7 | 281 | { |
69b696b9 | 282 | // Translate detector coordinates (detector, ring, sector, strip) to |
283 | // spatial coordinates (x, y, z) in the master reference frame of | |
284 | // ALICE. | |
1a1fdef7 | 285 | AliFMDDetector* det = GetDetector(detector); |
286 | if (!det) return; | |
287 | det->Detector2XYZ(ring, sector, strip, x, y, z); | |
288 | } | |
289 | ||
54e415a8 | 290 | //____________________________________________________________________ |
291 | Bool_t | |
292 | AliFMDGeometry::XYZ2Detector(Double_t x, | |
293 | Double_t y, | |
294 | Double_t z, | |
295 | UShort_t& detector, | |
296 | Char_t& ring, | |
297 | UShort_t& sector, | |
298 | UShort_t& strip) const | |
299 | { | |
300 | // Translate spatial coordinates (x,y,z) in the master reference frame of | |
301 | // ALICE to the detector coordinates (detector, ring, sector, | |
302 | // strip). Note, that if this method is to be used in | |
303 | // reconstruction or the like, then the input z-coordinate should be | |
304 | // corrected for the events interactions points z-coordinate, like | |
305 | // geom->XYZ2Detector(x,y,z-ipz,d,r,s,t); | |
306 | AliFMDDetector* det = 0; | |
307 | detector = 0; | |
308 | for (int i = 1; i <= 3; i++) { | |
309 | det = GetDetector(i); | |
310 | if (!det) continue; | |
311 | if (det->XYZ2Detector(x, y, z, ring, sector, strip)) { | |
312 | detector = det->GetId(); | |
313 | return kTRUE; | |
314 | } | |
315 | } | |
316 | return kFALSE; | |
317 | } | |
318 | ||
1a1fdef7 | 319 | |
320 | //____________________________________________________________________ | |
321 | void | |
322 | AliFMDGeometry::GetGlobal(const AliRecPoint* p, | |
323 | TVector3& pos, | |
324 | TMatrix& /* mat */) const | |
325 | { | |
69b696b9 | 326 | // Get the global coordinates cooresponding to the reconstructed |
327 | // point p. The coordiates is returned in the 3-vector pos passed | |
328 | // to this member function. The matrix mat is used for rotations. | |
1a1fdef7 | 329 | GetGlobal(p, pos); |
330 | } | |
331 | ||
332 | //____________________________________________________________________ | |
333 | void | |
334 | AliFMDGeometry::GetGlobal(const AliRecPoint* p, TVector3& pos) const | |
335 | { | |
69b696b9 | 336 | // Get the global coordinates cooresponding to the reconstructed |
337 | // point p. The coordiates is returned in the 3-vector pos passed | |
338 | // to this member function. Note, as AliRecPoint only has places for | |
339 | // 3 indicies, it is assumed that the ring hit is an inner ring - | |
340 | // which obviously needn't be the case. This makes the member | |
341 | // function pretty darn useless. | |
342 | // FIXME: Implement this function to work with outer rings too. | |
1a1fdef7 | 343 | Double_t x, y, z; |
344 | TVector3 local; | |
345 | p->GetLocalPosition(local); | |
346 | UShort_t detector = UShort_t(local.X()); | |
347 | UShort_t sector = UShort_t(local.Y()); | |
348 | UShort_t strip = UShort_t(local.Z()); | |
349 | Detector2XYZ(detector, 'I', sector, strip, x, y, z); | |
350 | pos.SetXYZ(x, y, z); | |
351 | } | |
352 | ||
353 | //____________________________________________________________________ | |
354 | Bool_t | |
355 | AliFMDGeometry::Impact(const TParticle* /* particle */) const | |
356 | { | |
69b696b9 | 357 | // Return true, if the particle will hit the active detector |
358 | // elements, and false if not. Should be used for fast | |
359 | // simulations. Note, that the function currently return false | |
360 | // always. | |
361 | // FIXME: Implement this function. | |
1a1fdef7 | 362 | return kFALSE; |
363 | } | |
364 | ||
54e415a8 | 365 | #ifndef USE_PRE_MOVE |
366 | //____________________________________________________________________ | |
367 | void | |
368 | AliFMDGeometry::ExtractGeomInfo() | |
369 | { | |
370 | // Check the volume depth of some nodes, get the active volume | |
371 | // numbers, and so forth. | |
372 | // | |
373 | // TODO: Here, we should actually also get the parameters of the | |
374 | // shapes, like the verticies of the polygon shape that makes up the | |
375 | // silicon sensor, the strip pitch, the ring radii, the z-positions, | |
376 | // and so on - that is, all the geometric information we need for | |
377 | // futher processing, such as simulation, digitization, | |
378 | // reconstruction, etc. | |
379 | Int_t detectorDepth = FindNodeDepth("FMD1_1", "ALIC"); | |
380 | Int_t ringDepth = FindNodeDepth(Form("FMDI_%d", Int_t('I')), "ALIC"); | |
381 | Int_t moduleDepth = FindNodeDepth("FIFV_0", "ALIC"); | |
382 | Int_t sectorDepth = FindNodeDepth("FISE_1", "ALIC"); | |
383 | fActive.Reset(-1); | |
384 | AliDebug(1, Form("Geometry depths:\n" | |
385 | " Sector: %d\n" | |
386 | " Module: %d\n" | |
387 | " Ring: %d\n" | |
388 | " Detector: %d", | |
389 | sectorDepth, moduleDepth, ringDepth, detectorDepth)); | |
390 | if (sectorDepth < 0 && moduleDepth < 0) { | |
391 | fDetailed = kFALSE; | |
392 | fSectorOff = -1; | |
393 | fModuleOff = -1; | |
394 | fRingOff = 0; | |
395 | fDetectorOff = (ringDepth - detectorDepth); | |
396 | TGeoVolume* actiVol = gGeoManager->GetVolume("FIAC"); | |
397 | TGeoVolume* actoVol = gGeoManager->GetVolume("FOAC"); | |
398 | if (actiVol) AddActive(actiVol->GetNumber()); | |
399 | if (actiVol) AddActive(actoVol->GetNumber()); | |
400 | } | |
401 | else if (sectorDepth < 0) { | |
402 | fDetailed = kFALSE; | |
403 | fSectorOff = -1; | |
404 | fModuleOff = 1; | |
405 | fRingOff = (moduleDepth - ringDepth) + 1; | |
406 | fDetectorOff = (moduleDepth - detectorDepth) + 1; | |
407 | TGeoVolume* modiVol = gGeoManager->GetVolume("FIMO"); | |
408 | TGeoVolume* modoVol = gGeoManager->GetVolume("FOMO"); | |
409 | if (modiVol) AddActive(modiVol->GetNumber()); | |
410 | if (modoVol) AddActive(modoVol->GetNumber()); | |
411 | } | |
412 | else { | |
413 | Int_t stripDepth = FindNodeDepth("FIST_1", "ALIC"); | |
414 | fDetailed = kTRUE; | |
415 | fSectorOff = (stripDepth - sectorDepth); | |
416 | fModuleOff = (moduleDepth >= 0 ? (stripDepth - moduleDepth) : -1); | |
417 | fRingOff = (stripDepth - ringDepth); | |
418 | fDetectorOff = (stripDepth - detectorDepth ); | |
419 | TGeoVolume* striVol = gGeoManager->GetVolume("FIST"); | |
420 | TGeoVolume* stroVol = gGeoManager->GetVolume("FOST"); | |
421 | if (striVol) AddActive(striVol->GetNumber()); | |
422 | if (stroVol) AddActive(stroVol->GetNumber()); | |
423 | } | |
424 | AliDebug(1, Form("Geometry offsets:\n" | |
425 | " Sector: %d\n" | |
426 | " Module: %d\n" | |
427 | " Ring: %d\n" | |
428 | " Detector: %d", | |
429 | fSectorOff, fModuleOff, fRingOff, fDetectorOff)); | |
430 | } | |
431 | ||
432 | ||
433 | //____________________________________________________________________ | |
434 | static Int_t | |
435 | CheckNodes(TGeoNode* node, const char* name, Int_t& lvl) | |
436 | { | |
437 | // If there's no node here. | |
438 | if (!node) return -1; | |
439 | // Check if it this one | |
440 | TString sname(name); | |
441 | if (sname == node->GetName()) return lvl; | |
442 | ||
443 | // Check if the node is an immediate daugther | |
444 | TObjArray* nodes = node->GetNodes(); | |
445 | if (!nodes) return -1; | |
446 | // Increase the level, and search immediate sub nodes. | |
447 | lvl++; | |
448 | TGeoNode* found = static_cast<TGeoNode*>(nodes->FindObject(name)); | |
449 | if (found) return lvl; | |
450 | ||
451 | // Check the sub node, if any of their sub-nodes match. | |
452 | for (Int_t i = 0; i < nodes->GetEntries(); i++) { | |
453 | TGeoNode* sub = static_cast<TGeoNode*>(nodes->At(i)); | |
454 | if (!sub) continue; | |
455 | // Recurive check | |
456 | if (CheckNodes(sub, name, lvl) >= 0) return lvl; | |
457 | } | |
458 | // If not found, decrease the level | |
459 | lvl--; | |
460 | return -1; | |
461 | } | |
462 | //____________________________________________________________________ | |
463 | Int_t | |
464 | FindNodeDepth(const char* name, const char* volname) | |
465 | { | |
466 | TGeoVolume* vol = gGeoManager->GetVolume(volname); | |
467 | if (!vol) { | |
468 | std::cerr << "No top volume defined" << std::endl; | |
469 | return -1; | |
470 | } | |
471 | TObjArray* nodes = vol->GetNodes(); | |
472 | if (!nodes) { | |
473 | std::cerr << "No nodes in top volume" << std::endl; | |
474 | return -1; | |
475 | } | |
476 | TIter next(nodes); | |
477 | TGeoNode* node = 0; | |
478 | Int_t lvl = 0; | |
479 | while ((node = static_cast<TGeoNode*>(next()))) | |
480 | if (CheckNodes(node, name, lvl) >= 0) return lvl; | |
481 | return -1; | |
482 | } | |
483 | #endif | |
484 | ||
1a1fdef7 | 485 | //____________________________________________________________________ |
486 | // | |
487 | // EOF | |
488 | // |