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1a1fdef7 | 1 | /************************************************************************** |
2 | * Copyright(c) 2004, 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 | **************************************************************************/ | |
1a1fdef7 | 15 | /* $Id$ */ |
c2fc1258 | 16 | /** @file AliFMDDetector.cxx |
17 | @author Christian Holm Christensen <cholm@nbi.dk> | |
18 | @date Mon Mar 27 12:36:27 2006 | |
19 | @brief Sub-detector base class implementation | |
02a27b50 | 20 | @ingroup FMD_base |
c2fc1258 | 21 | */ |
1a1fdef7 | 22 | |
23 | //____________________________________________________________________ | |
24 | // | |
6169f936 | 25 | // AliFMDDetector. |
26 | // | |
27 | // Base class for concrete FMD detectors, like AliFMD1, AliFMD2, | |
28 | // AliFMD3. | |
1a1fdef7 | 29 | // Utility class to help implement the FMD geometry. This provides |
30 | // the interface for the concrete geometry implementations of the FMD | |
31 | // sub-detectors. | |
32 | // | |
33 | // The AliFMDGeometry object owns the AliFMDDetector objects | |
34 | // | |
35 | // Latest changes by Christian Holm Christensen | |
36 | // | |
37 | #include "AliFMDDetector.h" // ALIFMDSUBDETECTOR_H | |
38 | #include "AliFMDRing.h" // ALIFMDRING_H | |
bf000c32 | 39 | #include "AliLog.h" // ALILOG_H |
40 | #include <TGeoManager.h> // ROOT_TGeoManager | |
41 | #include <TGeoMatrix.h> // ROOT_TGeoMatrix | |
02a27b50 | 42 | // #include <TMath.h> // ROOT_TMath |
1a1fdef7 | 43 | |
44 | //==================================================================== | |
45 | ClassImp(AliFMDDetector) | |
46 | #if 0 | |
47 | ; // This is here to keep Emacs for indenting the next line | |
48 | #endif | |
49 | ||
50 | //____________________________________________________________________ | |
51 | AliFMDDetector::AliFMDDetector(Int_t id, AliFMDRing* inner, AliFMDRing* outer) | |
52 | : TNamed(Form("FMD%d", id), "Forward multiplicity ring"), | |
53 | fId(id), | |
b5ee4425 | 54 | fInnerZ(0.), |
55 | fOuterZ(0.), | |
56 | fHoneycombThickness(0.), | |
57 | fAlThickness(0.), | |
58 | fInnerHoneyLowR(0.), | |
59 | fInnerHoneyHighR(0.), | |
60 | fOuterHoneyLowR(0.), | |
61 | fOuterHoneyHighR(0.), | |
1a1fdef7 | 62 | fInner(inner), |
bf000c32 | 63 | fOuter(outer), |
64 | fInnerTransforms(0), | |
65 | fOuterTransforms(0) | |
1a1fdef7 | 66 | { |
088f8e79 | 67 | // Constructor |
68 | // | |
69 | // ID Id of detector (1,2, or 3) | |
70 | // INNER Inner ring geometry | |
71 | // OUTER Outer ring geometry (if any) | |
72 | // | |
1a1fdef7 | 73 | SetHoneycombThickness(); |
74 | SetAlThickness(); | |
75 | SetInnerHoneyLowR(0); | |
76 | SetInnerHoneyHighR(0); | |
77 | SetInnerZ(0); | |
78 | SetOuterZ(0); | |
79 | SetOuterHoneyLowR(0); | |
80 | SetOuterHoneyHighR(0); | |
81 | } | |
82 | ||
088f8e79 | 83 | //____________________________________________________________________ |
84 | AliFMDDetector::AliFMDDetector(const AliFMDDetector& other) | |
85 | : TNamed(other), | |
86 | fId(other.fId), | |
b5ee4425 | 87 | fInnerZ(0.), |
88 | fOuterZ(0.), | |
89 | fHoneycombThickness(0.), | |
90 | fAlThickness(0.), | |
91 | fInnerHoneyLowR(0.), | |
92 | fInnerHoneyHighR(0.), | |
93 | fOuterHoneyLowR(0.), | |
94 | fOuterHoneyHighR(0.), | |
088f8e79 | 95 | fInner(other.fInner), |
bf000c32 | 96 | fOuter(other.fOuter), |
97 | fInnerTransforms(other.fInnerTransforms), | |
98 | fOuterTransforms(other.fOuterTransforms) | |
088f8e79 | 99 | { |
100 | // Copy constructor | |
101 | SetHoneycombThickness(other.GetHoneycombThickness()); | |
102 | SetAlThickness(other.GetAlThickness()); | |
103 | SetInnerHoneyLowR(other.GetInnerHoneyLowR()); | |
104 | SetInnerHoneyHighR(other.GetInnerHoneyHighR()); | |
105 | SetInnerZ(other.GetInnerZ()); | |
106 | SetOuterZ(other.GetOuterZ()); | |
107 | SetOuterHoneyLowR(other.GetOuterHoneyLowR()); | |
108 | SetOuterHoneyHighR(other.GetOuterHoneyHighR()); | |
109 | } | |
110 | ||
111 | //____________________________________________________________________ | |
112 | AliFMDDetector& | |
113 | AliFMDDetector::operator=(const AliFMDDetector& other) | |
114 | { | |
115 | // Assignment operator | |
116 | SetName(other.GetName()); | |
117 | SetTitle(other.GetTitle()); | |
bf000c32 | 118 | fId = other.fId; |
119 | fInner = other.fInner; | |
120 | fOuter = other.fOuter; | |
121 | fInnerTransforms = other.fInnerTransforms; | |
122 | fOuterTransforms = other.fOuterTransforms; | |
088f8e79 | 123 | SetHoneycombThickness(other.GetHoneycombThickness()); |
124 | SetAlThickness(other.GetAlThickness()); | |
125 | SetInnerHoneyLowR(other.GetInnerHoneyLowR()); | |
126 | SetInnerHoneyHighR(other.GetInnerHoneyHighR()); | |
127 | SetInnerZ(other.GetInnerZ()); | |
128 | SetOuterZ(other.GetOuterZ()); | |
129 | SetOuterHoneyLowR(other.GetOuterHoneyLowR()); | |
130 | SetOuterHoneyHighR(other.GetOuterHoneyHighR()); | |
131 | return *this; | |
132 | } | |
133 | ||
1a1fdef7 | 134 | //____________________________________________________________________ |
135 | void | |
136 | AliFMDDetector::Init() | |
137 | { | |
088f8e79 | 138 | // Initialize. |
1a1fdef7 | 139 | if (fInner) { |
140 | SetInnerHoneyLowR(fInner->GetLowR() + 1.); | |
141 | SetInnerHoneyHighR(fInner->GetHighR() + 1.); | |
142 | } | |
143 | if (fOuter) { | |
144 | SetOuterHoneyLowR(fOuter->GetLowR() + 1.); | |
145 | SetOuterHoneyHighR(fOuter->GetHighR() + 1.); | |
bf000c32 | 146 | } |
147 | } | |
148 | ||
149 | //____________________________________________________________________ | |
150 | Bool_t | |
151 | AliFMDDetector::HasAllTransforms(Char_t ring) const | |
152 | { | |
02a27b50 | 153 | // Check if we got all transformations for a given ring. Return |
154 | // true in that case. | |
bf000c32 | 155 | AliFMDRing* r = GetRing(ring); |
156 | if (!r) return kTRUE; | |
157 | TObjArray* matricies = (r == fInner ? fInnerTransforms : fOuterTransforms); | |
158 | if (!matricies) return kTRUE; | |
159 | if (matricies->GetEntries() == r->GetNModules()) return kTRUE; | |
160 | return kFALSE; | |
161 | } | |
162 | ||
163 | #define IS_NODE_THIS(name) \ | |
164 | (name[0] == 'F' && name[2] == 'M' && name[1] == Char_t(48+fId) && \ | |
165 | (name[3] == 'T' || name[3] == 'B')) | |
166 | #define IS_NODE_SENSOR(name) \ | |
167 | (name[0] == 'F' && name[2] == 'S' && name[3] == 'E') | |
168 | ||
169 | //____________________________________________________________________ | |
170 | void | |
171 | AliFMDDetector::InitTransformations() | |
172 | { | |
02a27b50 | 173 | // Find all local<->global transformations for this detector. |
bf000c32 | 174 | if ((!fInner || (fInner && fInnerTransforms)) && |
175 | (!fOuter || (fOuter && fOuterTransforms))) { | |
176 | AliDebug(5, Form("Transforms for FMD%d already registered", fId)); | |
177 | return; | |
178 | } | |
179 | AliDebug(5, Form("Initializing transforms for FMD%d", fId)); | |
180 | if (!gGeoManager) { | |
181 | AliFatal("No TGeoManager defined"); | |
182 | return; | |
183 | } | |
184 | TGeoVolume* topVolume = gGeoManager->GetTopVolume(); | |
185 | if (!topVolume) { | |
186 | AliFatal("No top-level volume defined"); | |
187 | return; | |
188 | } | |
189 | // Make container of transforms | |
190 | if (fInner && !fInnerTransforms) | |
191 | fInnerTransforms = new TObjArray(fInner->GetNModules()); | |
192 | if (fOuter && !fOuterTransforms) | |
193 | fOuterTransforms = new TObjArray(fOuter->GetNModules()); | |
194 | ||
195 | // Make an iterator | |
196 | TGeoIterator next(topVolume); | |
197 | TGeoNode* node = 0; | |
198 | ||
199 | // Find the node corresponding to this detector, and then find the | |
200 | // sensor volumes | |
201 | Bool_t thisNodeFound = kFALSE; | |
202 | Bool_t allInners = HasAllTransforms('I'); | |
203 | Bool_t allOuters = HasAllTransforms('O'); | |
204 | ||
205 | while ((node = static_cast<TGeoNode*>(next())) | |
206 | && !(allInners && allOuters)) { | |
207 | // Get nodes names | |
208 | const Char_t* name = node->GetName(); | |
209 | if (!name) continue; | |
210 | AliDebug(50, Form("Got volume %s", name)); | |
211 | // Check if this node is this detector | |
212 | // The base offset for numbers in the ASCII table is 48 | |
213 | if (IS_NODE_THIS(name)) { | |
214 | AliDebug(20, Form("Found detector node '%s' for FMD%d", name, fId)); | |
215 | thisNodeFound = kTRUE; | |
216 | } | |
217 | // if the detector was found, then we're on that branch, and we | |
218 | // check if this node represents a module in that branch. | |
219 | if (thisNodeFound && IS_NODE_SENSOR(name)) { | |
220 | AliDebug(20, Form("Found sensor node '%s' for FMD%d", name, fId)); | |
221 | // Get the ring Id. | |
222 | Char_t ringid = name[1]; | |
223 | ||
224 | // Get the approprate ring | |
225 | AliFMDRing* ring = GetRing(ringid); | |
226 | if (!ring) continue; | |
227 | ||
228 | // Check whether we have all the modules we need for this ring, | |
229 | // and if so, go on to the next node. | |
230 | Bool_t& done = (ring == fInner ? allInners : allOuters); | |
231 | if ((done = HasAllTransforms(ringid))) { | |
232 | AliDebug(20, Form("Already has all module transforms for ring %c", | |
233 | ringid)); | |
234 | continue; | |
235 | } | |
236 | ||
237 | // Get the approprate container | |
238 | TObjArray* matricies = (ringid == 'i' || ringid == 'I' | |
239 | ? fInnerTransforms : fOuterTransforms); | |
240 | ||
241 | // Get the copy (module) number, and check that it hasn't | |
242 | // already been added to the container. | |
243 | Int_t copy = node->GetNumber(); | |
244 | if (matricies->At(copy)) { | |
245 | AliWarning(Form("Have a transformation for module %d in ring %c", | |
246 | copy, ringid)); | |
247 | continue; | |
248 | } | |
249 | ||
250 | // Get the global transformation matrix, and store it. | |
251 | TGeoMatrix* trans = new TGeoHMatrix(*(next.GetCurrentMatrix())); | |
252 | matricies->AddAt(trans, copy); | |
253 | ||
254 | } | |
1a1fdef7 | 255 | } |
1a1fdef7 | 256 | } |
257 | ||
258 | //____________________________________________________________________ | |
259 | AliFMDRing* | |
260 | AliFMDDetector::GetRing(Char_t id) const | |
261 | { | |
088f8e79 | 262 | // Get the specified ring |
263 | // | |
264 | // ID Id of ring ('I' or 'O') | |
265 | // | |
1a1fdef7 | 266 | switch (id) { |
267 | case 'i': | |
268 | case 'I': return GetInner(); | |
269 | case 'o': | |
270 | case 'O': return GetOuter(); | |
271 | } | |
272 | return 0; | |
273 | } | |
274 | ||
275 | //____________________________________________________________________ | |
276 | Double_t | |
277 | AliFMDDetector::GetRingZ(Char_t id) const | |
278 | { | |
088f8e79 | 279 | // Get the z-coordinate specified ring |
280 | // | |
281 | // ID Id of ring ('I' or 'O') | |
282 | // | |
1a1fdef7 | 283 | switch (id) { |
284 | case 'i': | |
285 | case 'I': return GetInnerZ(); | |
286 | case 'o': | |
287 | case 'O': return GetOuterZ(); | |
288 | } | |
289 | return 0; | |
290 | } | |
bf000c32 | 291 | |
292 | //____________________________________________________________________ | |
293 | TGeoMatrix* | |
294 | AliFMDDetector::FindTransform(Char_t ring, UShort_t sector) const | |
295 | { | |
296 | // Find the transformation that corresponds to sector sector in ring | |
297 | // ring. | |
298 | TObjArray* matricies = 0; | |
299 | switch (ring) { | |
300 | case 'i': case 'I': matricies = fInnerTransforms; break; | |
301 | case 'o': case 'O': matricies = fOuterTransforms; break; | |
302 | } | |
303 | if (!matricies) { | |
304 | AliWarning(Form("Unknown ring %c of FMD%d", ring, fId)); | |
305 | return 0; | |
306 | } | |
307 | UInt_t module = sector / 2; | |
308 | TGeoMatrix* m = static_cast<TGeoMatrix*>(matricies->At(module)); | |
309 | if (!m) { | |
310 | AliWarning(Form("No matrix found for sector %d in FMD%d%c", | |
311 | sector, fId, ring)); | |
312 | return 0; | |
313 | } | |
314 | return m; | |
315 | } | |
316 | ||
317 | ||
1a1fdef7 | 318 | //____________________________________________________________________ |
319 | void | |
bf000c32 | 320 | AliFMDDetector::Detector2XYZ(Char_t ring, |
1a1fdef7 | 321 | UShort_t sector, |
322 | UShort_t strip, | |
323 | Double_t& x, | |
324 | Double_t& y, | |
325 | Double_t& z) const | |
326 | { | |
088f8e79 | 327 | // Translate detector coordinates (this,ring,sector,strip) into |
328 | // (x,y,z) coordinates (in global reference frame) | |
1a1fdef7 | 329 | AliFMDRing* r = GetRing(ring); |
330 | if (!r) return; | |
bf000c32 | 331 | TGeoMatrix* m = FindTransform(ring, sector); |
332 | if (!m) return; | |
333 | Double_t rho = r->GetStripRadius(strip); | |
334 | Double_t phi = ((sector % 2) - .5) * r->GetTheta(); | |
335 | Double_t siThick = r->GetSiThickness(); | |
336 | Double_t modThick = (siThick | |
337 | + r->GetPrintboardThickness() | |
338 | + r->GetCopperThickness() | |
339 | + r->GetChipThickness() | |
340 | + r->GetSpacing()); | |
15b17c89 | 341 | AliDebug(30,Form("Rho %7.3f, angle %7.3f", rho, phi)); |
bf000c32 | 342 | # define DEGRAD TMath::Pi() / 180. |
343 | Double_t local[] = { rho * TMath::Cos(phi * DEGRAD), | |
344 | rho * TMath::Sin(phi * DEGRAD), | |
345 | -modThick + siThick / 2 }; | |
346 | Double_t master[3]; | |
15b17c89 | 347 | AliDebug(30, Form("Local (%7.3f,%7.3f,%7.3f)",local[0], local[1], local[2])); |
bf000c32 | 348 | m->LocalToMaster(local, master); |
15b17c89 | 349 | AliDebug(30, Form("Master (%7.3f,%7.3f,%7.3f)", |
bf000c32 | 350 | master[0],master[1],master[2])); |
351 | x = master[0]; | |
352 | y = master[1]; | |
353 | z = master[2]; | |
1a1fdef7 | 354 | } |
355 | ||
54e415a8 | 356 | //____________________________________________________________________ |
357 | Bool_t | |
358 | AliFMDDetector::XYZ2Detector(Double_t x, | |
359 | Double_t y, | |
360 | Double_t z, | |
361 | Char_t& ring, | |
362 | UShort_t& sector, | |
363 | UShort_t& strip) const | |
364 | { | |
088f8e79 | 365 | // Translate (x,y,z) coordinates (in global reference frame) into |
366 | // detector coordinates (this,ring,sector,strip). | |
54e415a8 | 367 | AliFMDRing* rng = 0; |
368 | ring = -1; | |
369 | for (int j = 0; j < 2; j++) { | |
370 | rng = GetRing(j == 0 ? 'I' : 'O'); | |
371 | if (!rng) continue; | |
372 | Double_t ringZ = GetRingZ(j == 0 ? 'I' : 'O'); | |
373 | Double_t modSpace = TMath::Sign(rng->GetModuleSpacing(), ringZ); | |
374 | if (TMath::Abs(z - ringZ) < 0.01 || | |
375 | TMath::Abs(z - ringZ + modSpace) < 0.01) break; | |
376 | rng = 0; | |
377 | } | |
378 | if (rng && rng->XYZ2Detector(x, y, z - GetRingZ(rng->GetId()), | |
379 | sector, strip)) { | |
380 | ring = rng->GetId(); | |
381 | return kTRUE; | |
382 | } | |
383 | return kFALSE; | |
384 | } | |
385 | ||
386 | ||
387 | ||
1a1fdef7 | 388 | //____________________________________________________________________ |
389 | // | |
390 | // EOF | |
391 | // |