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54e415a8 | 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. This class | |
21 | // contains the base procedures for the Forward Multiplicity detector | |
22 | // Detector consists of 3 sub-detectors FMD1, FMD2, and FMD3, each of | |
23 | // which has 1 or 2 rings of silicon sensors. | |
24 | // | |
25 | // This is the base class for all FMD manager classes. | |
26 | // | |
27 | // The actual code is done by various separate classes. Below is | |
28 | // diagram showing the relationship between the various FMD classes | |
29 | // that handles the simulation | |
30 | // | |
31 | // +--------+ 1 +-----------------+ | |
32 | // | AliFMD |<>-----| AliFMDGeometryBuilder | | |
33 | // +--------+ +-----------------+ | |
34 | // ^ | |
35 | // | | |
36 | // +-------------+-------------+ | |
37 | // | | | |
38 | // +--------------------+ +-------------------+ | |
39 | // | AliFMDGeometryBuilder | | AliFMDG3Simulator | | |
40 | // +--------------------+ +---------+---------+ | |
41 | // ^ | |
42 | // | | |
43 | // +--------------------+ | |
44 | // | AliFMDOldSimulator | | |
45 | // +--------------------+ | |
46 | // | |
47 | // * AliFMD | |
48 | // This defines the interface for the various parts of AliROOT that | |
49 | // uses the FMD, like AliFMDGeometryBuilder, AliFMDDigitizer, | |
50 | // AliFMDReconstructor, and so on. | |
51 | // | |
52 | // * AliFMDGeometryBuilder | |
53 | // This is the base class for the FMD simulation tasks. The | |
54 | // simulator tasks are responsible to implment the geoemtry, and | |
55 | // process hits. | |
56 | // | |
57 | // * AliFMDGeometryBuilder | |
58 | // This is a concrete implementation of the AliFMDGeometryBuilder that | |
59 | // uses the TGeo classes directly only. This defines the active | |
60 | // volume as an ONLY XTRU shape with a divided MANY TUBS shape | |
61 | // inside to implement the particular shape of the silicon | |
62 | // sensors. | |
63 | // | |
64 | // * AliFMDG3Simulator | |
65 | // This is a concrete implementation of the AliFMDGeometryBuilder that | |
66 | // uses the TVirtualMC interface with GEANT 3.21-like messages. | |
67 | // This implements the active volume as a divided TUBS shape. Hits | |
68 | // in the corners should be cut away at run time (but currently | |
69 | // isn't). | |
70 | // | |
71 | // * AliFMDOldSimulator | |
72 | // This is a concrete implementation of AliFMDGeometryBuilder. It | |
73 | // approximates the of the rings as segmented disks. | |
74 | // | |
75 | #include "AliFMDGeometryBuilder.h" // ALIFMDGEOSIMULATOR_H | |
76 | #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H | |
77 | #include "AliFMDDetector.h" // ALIFMDDETECTOR_H | |
78 | #include "AliFMDRing.h" // ALIFMDRING_H | |
79 | #include "AliFMD1.h" // ALIFMD1_H | |
80 | #include "AliFMD2.h" // ALIFMD2_H | |
81 | #include "AliFMD3.h" // ALIFMD3_H | |
82 | #include "AliFMD.h" // ALIFMD_H | |
83 | #include "AliLog.h" // ALILOG_H | |
84 | #include <TGeoVolume.h> // ROOT_TGeoVolume | |
85 | #include <TGeoTube.h> // ROOT_TGeoTube | |
86 | #include <TGeoPcon.h> // ROOT_TGeoPcon | |
87 | #include <TGeoMaterial.h> // ROOT_TGeoMaterial | |
88 | #include <TGeoMedium.h> // ROOT_TGeoMedium | |
89 | #include <TGeoXtru.h> // ROOT_TGeoXtru | |
90 | #include <TGeoPolygon.h> // ROOT_TGeoPolygon | |
91 | #include <TGeoTube.h> // ROOT_TGeoTube | |
92 | #include <TGeoManager.h> // ROOT_TGeoManager | |
93 | #include <TVector2.h> // ROOT_TVector2 | |
94 | #include <TArrayD.h> // ROOT_TArrayD | |
95 | ||
96 | //==================================================================== | |
97 | ClassImp(AliFMDGeometryBuilder) | |
98 | #if 0 | |
99 | ; // This is here to keep Emacs for indenting the next line | |
100 | #endif | |
101 | ||
102 | //____________________________________________________________________ | |
103 | const Char_t* AliFMDGeometryBuilder::fgkActiveName = "F%cAC"; | |
104 | const Char_t* AliFMDGeometryBuilder::fgkSectorName = "F%cSE"; | |
105 | const Char_t* AliFMDGeometryBuilder::fgkStripName = "F%cST"; | |
106 | const Char_t* AliFMDGeometryBuilder::fgkModuleName = "F%cMO"; | |
107 | const Char_t* AliFMDGeometryBuilder::fgkPCBName = "F%cP%c"; | |
108 | const Char_t* AliFMDGeometryBuilder::fgkLongLegName = "F%cLL"; | |
109 | const Char_t* AliFMDGeometryBuilder::fgkShortLegName = "F%cSL"; | |
110 | const Char_t* AliFMDGeometryBuilder::fgkFrontVName = "F%cFV"; | |
111 | const Char_t* AliFMDGeometryBuilder::fgkBackVName = "F%cBV"; | |
112 | const Char_t* AliFMDGeometryBuilder::fgkRingName = "FMD%c"; | |
113 | const Char_t* AliFMDGeometryBuilder::fgkTopHCName = "F%d%cI"; | |
114 | const Char_t* AliFMDGeometryBuilder::fgkBotHCName = "F%d%cJ"; | |
115 | const Char_t* AliFMDGeometryBuilder::fgkTopIHCName = "F%d%cK"; | |
116 | const Char_t* AliFMDGeometryBuilder::fgkBotIHCName = "F%d%cL"; | |
117 | const Char_t* AliFMDGeometryBuilder::fgkNoseName = "F3SN"; | |
118 | const Char_t* AliFMDGeometryBuilder::fgkBackName = "F3SB"; | |
119 | const Char_t* AliFMDGeometryBuilder::fgkBeamName = "F3SL"; | |
120 | const Char_t* AliFMDGeometryBuilder::fgkFlangeName = "F3SF"; | |
121 | ||
122 | //____________________________________________________________________ | |
123 | AliFMDGeometryBuilder::AliFMDGeometryBuilder() | |
124 | : fDetailed(kTRUE), | |
125 | fUseAssembly(kTRUE), | |
126 | fSi(0), | |
127 | fC(0), | |
128 | fAl(0), | |
129 | fPCB(0), | |
130 | fChip(0), | |
131 | fPlastic(0) | |
132 | { | |
133 | // Default constructor | |
088f8e79 | 134 | fActiveId.Set(2); |
54e415a8 | 135 | } |
136 | ||
137 | //____________________________________________________________________ | |
138 | AliFMDGeometryBuilder::AliFMDGeometryBuilder(Bool_t detailed) | |
139 | : TTask("FMD", "Geometry builder"), | |
140 | fDetailed(detailed), | |
141 | fUseAssembly(kTRUE), | |
142 | fSi(0), | |
143 | fC(0), | |
144 | fAl(0), | |
145 | fPCB(0), | |
146 | fChip(0), | |
147 | fPlastic(0) | |
148 | { | |
149 | // Normal constructor | |
150 | // | |
151 | // Parameters: | |
152 | // | |
153 | // fmd Pointer to AliFMD object | |
154 | // detailed Whether to make a detailed simulation or not | |
155 | // | |
088f8e79 | 156 | fActiveId.Set(2); |
54e415a8 | 157 | } |
158 | ||
159 | ||
160 | //____________________________________________________________________ | |
161 | TGeoVolume* | |
162 | AliFMDGeometryBuilder::RingGeometry(AliFMDRing* r) | |
163 | { | |
164 | // Setup the geometry of a ring. The defined TGeoVolume is | |
165 | // returned, and should be used when setting up the rest of the | |
166 | // volumes. | |
167 | // | |
168 | // | |
169 | // Parameters: | |
170 | // | |
171 | // r Pointer to ring geometry object | |
172 | // | |
173 | // Returns: | |
174 | // pointer to ring volume | |
175 | // | |
176 | if (!r) { | |
177 | AliError("Didn't get a ring object"); | |
178 | return 0; | |
179 | } | |
180 | Char_t id = r->GetId(); | |
181 | Double_t siThick = r->GetSiThickness(); | |
182 | const Int_t nv = r->GetNVerticies(); | |
183 | TVector2* a = r->GetVertex(5); | |
184 | TVector2* b = r->GetVertex(3); | |
185 | TVector2* c = r->GetVertex(4); | |
186 | Double_t theta = r->GetTheta(); | |
187 | Double_t off = (TMath::Tan(TMath::Pi() * theta / 180) | |
188 | * r->GetBondingWidth()); | |
189 | Double_t rmax = b->Mod(); | |
190 | Double_t rmin = r->GetLowR(); | |
191 | Double_t pcbThick = r->GetPrintboardThickness(); | |
192 | Double_t modSpace = r->GetModuleSpacing(); | |
193 | Double_t legr = r->GetLegRadius(); | |
194 | Double_t legl = r->GetLegLength(); | |
195 | Double_t legoff = r->GetLegOffset(); | |
196 | Int_t ns = r->GetNStrips(); | |
197 | Double_t stripoff = a->Mod(); | |
198 | Double_t dstrip = (rmax - stripoff) / ns; | |
199 | Double_t space = r->GetSpacing(); | |
200 | TArrayD xs(nv); | |
201 | TArrayD ys(nv); | |
202 | for (Int_t i = 0; i < nv; i++) { | |
203 | // Reverse the order | |
204 | TVector2* vv = r->GetVertex(nv - 1 - i); | |
205 | if (!vv) { | |
206 | AliError(Form("Failed to get vertex # %d", nv - 1 - i)); | |
207 | continue; | |
208 | } | |
209 | xs[i] = vv->X(); | |
210 | ys[i] = vv->Y(); | |
211 | } | |
212 | ||
213 | // Shape of actual sensor | |
214 | TGeoXtru* moduleShape = new TGeoXtru(2); | |
215 | moduleShape->DefinePolygon(nv, xs.fArray, ys.fArray); | |
216 | moduleShape->DefineSection(0, - siThick/2); | |
217 | moduleShape->DefineSection(1, siThick/2); | |
218 | TGeoVolume* moduleVolume = new TGeoVolume(Form(fgkModuleName, id), | |
219 | moduleShape, fSi); | |
220 | Int_t sid = moduleVolume->GetNumber(); | |
221 | fSectorOff = -1; | |
222 | fModuleOff = 1; | |
223 | fRingOff = 2; | |
224 | fDetectorOff = 3; | |
225 | if (fDetailed) { | |
226 | fSectorOff = 1; | |
227 | fModuleOff = 4; | |
228 | fRingOff = 5; | |
229 | fDetectorOff = 6; | |
230 | // Virtual volume shape to divide - This volume is only defined if | |
231 | // the geometry is set to be detailed. | |
232 | TGeoTubeSeg* activeShape = | |
233 | new TGeoTubeSeg(rmin, rmax, siThick/2, - theta, theta); | |
234 | TGeoVolume* activeVolume = new TGeoVolume(Form(fgkActiveName, id), | |
235 | activeShape,fSi); | |
236 | TGeoVolume* sectorVolume = activeVolume->Divide(Form(fgkSectorName,id), | |
237 | 2, 2, -theta,0,0,"N"); | |
238 | TGeoVolume* stripVolume = sectorVolume->Divide(Form(fgkStripName, id), | |
239 | 1, ns, stripoff, dstrip, | |
240 | 0, "SX"); | |
241 | sid = stripVolume->GetNumber(); | |
242 | moduleVolume->AddNodeOverlap(activeVolume, 0); | |
243 | } | |
244 | ||
245 | switch (id) { | |
246 | case 'i': | |
247 | case 'I': fActiveId[0] = sid; break; | |
248 | case 'o': | |
088f8e79 | 249 | case 'O': fActiveId[1] = sid; break; |
54e415a8 | 250 | } |
251 | ||
252 | // Shape of Printed circuit Board | |
253 | TGeoXtru* pcbShape = new TGeoXtru(2); | |
254 | for (Int_t i = 0; i < nv / 2; i++) ys[i] -= off; | |
255 | for (Int_t i = nv / 2; i < nv; i++) ys[i] += off; | |
256 | pcbShape->DefinePolygon(nv, xs.fArray, ys.fArray); | |
257 | pcbShape->DefineSection(0, - pcbThick/2); | |
258 | pcbShape->DefineSection(1, pcbThick/2); | |
259 | TGeoVolume* pcbVolume = new TGeoVolume(Form(fgkPCBName, id, 'B'), | |
260 | pcbShape, fPCB); | |
261 | ||
262 | // Short leg shape | |
263 | TGeoTube* shortLegShape = new TGeoTube(0, legr, legl / 2); | |
264 | TGeoVolume* shortLegVolume = new TGeoVolume(Form(fgkShortLegName, id), | |
265 | shortLegShape, fPlastic); | |
266 | ||
267 | // Long leg shape | |
268 | TGeoTube* longLegShape = new TGeoTube(0, legr, (legl + modSpace) / 2); | |
269 | TGeoVolume* longLegVolume = new TGeoVolume(Form(fgkLongLegName, id), | |
270 | longLegShape, fPlastic); | |
271 | ||
272 | TGeoMatrix* matrix = 0; | |
273 | // Back container volume | |
274 | Double_t contThick = siThick + pcbThick + legl + space; | |
275 | TGeoTubeSeg* backShape = new TGeoTubeSeg(rmin, rmax, contThick/2, | |
276 | - theta, theta); | |
277 | TGeoVolume* backVolume = new TGeoVolume(Form(fgkBackVName, id), | |
278 | backShape, fAir); | |
279 | Double_t x = 0; | |
280 | Double_t y = 0; | |
281 | Double_t z = -contThick / 2 + siThick / 2; | |
282 | matrix = new TGeoTranslation(Form("FMD Ring %c mod 1 transform", id), | |
283 | x, y, z); | |
284 | backVolume->AddNode(moduleVolume, 0, matrix); | |
285 | z += siThick / 2 + space + pcbThick / 2; | |
286 | matrix = new TGeoTranslation(Form("FMD Ring %c pcb 1 transfrom", id), | |
287 | x, y, z); | |
288 | backVolume->AddNode(pcbVolume, 0, matrix); | |
289 | x = a->X() + legoff + legr; | |
290 | y = 0; | |
291 | z += pcbThick / 2 + legl / 2; | |
292 | matrix = new TGeoTranslation(Form("FMD Ring %c leg 1 transfrom", id), | |
293 | x, y, z); | |
294 | backVolume->AddNode(shortLegVolume, 0, matrix); | |
295 | x = c->X(); | |
296 | y = c->Y() - legoff - legr - off; | |
297 | matrix = new TGeoTranslation(Form("FMD Ring %c leg 2 transfrom", id), | |
298 | x, y, z); | |
299 | backVolume->AddNode(shortLegVolume, 1, matrix); | |
300 | y = -y; | |
301 | matrix = new TGeoTranslation(Form("FMD Ring %c leg 3 transfrom", id), | |
302 | x, y, z); | |
303 | backVolume->AddNode(shortLegVolume, 2, matrix); | |
304 | // backVolume->SetVisibility(kFALSE); | |
305 | // backVolume->VisibleDaughters(kTRUE); | |
306 | ||
307 | // Front container volume | |
308 | contThick += modSpace; | |
309 | TGeoTubeSeg* frontShape = new TGeoTubeSeg(rmin, rmax, contThick/2, | |
310 | -theta, theta); | |
311 | TGeoVolume* frontVolume = new TGeoVolume(Form(fgkFrontVName, id), | |
312 | frontShape, fAir); | |
313 | x = 0; | |
314 | y = 0; | |
315 | z = -contThick / 2 + siThick / 2 ; | |
316 | matrix = new TGeoTranslation(Form("FMD Ring %c mod 2 transfrom", id), | |
317 | 0, 0, z); | |
318 | frontVolume->AddNode(moduleVolume, 1, matrix); | |
319 | z += siThick / 2 + space + pcbThick / 2; | |
320 | matrix = new TGeoTranslation(Form("FMD Ring %c pcb 2 transfrom", id), | |
321 | x, y, z); | |
322 | frontVolume->AddNode(pcbVolume, 1, matrix); | |
323 | x = a->X() + legoff + legr; | |
324 | y = 0; | |
325 | z += pcbThick / 2 + (legl + modSpace)/ 2; | |
326 | matrix = new TGeoTranslation(Form("FMD Ring %c leg 4 transfrom", id), | |
327 | x, y, z); | |
328 | frontVolume->AddNode(longLegVolume, 0, matrix); | |
329 | x = c->X(); | |
330 | y = c->Y() - legoff - legr - off; | |
331 | matrix = new TGeoTranslation(Form("FMD Ring %c leg 4 transfrom", id), | |
332 | x, y, z); | |
333 | frontVolume->AddNode(longLegVolume, 1, matrix); | |
334 | y = -y; | |
335 | matrix = new TGeoTranslation(Form("FMD Ring %c leg 4 transfrom", id), | |
336 | x, y, z); | |
337 | frontVolume->AddNode(longLegVolume, 2, matrix); | |
338 | // frontVolume->SetVisibility(kFALSE); | |
339 | // frontVolume->VisibleDaughters(kTRUE); | |
340 | ||
341 | // Ring mother volume | |
342 | TGeoTube* ringShape = new TGeoTube(rmin, rmax, contThick / 2); | |
343 | TGeoVolume* ringVolume = new TGeoVolume(Form(fgkRingName,id), | |
344 | ringShape,fAir); | |
345 | ||
346 | Int_t nmod = r->GetNModules(); | |
347 | AliDebug(10, Form("making %d modules in ring %c", nmod, id)); | |
348 | for (Int_t i = 0; i < nmod; i++) { | |
349 | Bool_t isFront = (i % 2 == 0); | |
350 | TGeoVolume* vol = (isFront ? frontVolume : backVolume); | |
351 | TGeoRotation* rot =new TGeoRotation(Form("FMD Ring %c rotation %d",id,i)); | |
352 | rot->RotateZ((i + .5) * 2 * theta); | |
353 | Double_t z = (isFront ? 0 : modSpace) / 2; | |
354 | matrix = new TGeoCombiTrans(Form("FMD Ring %c transform %d", id, i), | |
355 | 0, 0, z, rot); | |
356 | ringVolume->AddNode(vol, i, matrix); | |
357 | } | |
358 | ||
359 | ringVolume->SetVisibility(kFALSE); | |
360 | ringVolume->VisibleDaughters(kTRUE); | |
361 | return ringVolume; | |
362 | } | |
363 | ||
364 | //____________________________________________________________________ | |
365 | TGeoVolume* | |
366 | AliFMDGeometryBuilder::DetectorGeometry(AliFMDDetector* d, | |
367 | TGeoVolume* mother, | |
368 | Double_t zmother, | |
369 | TGeoVolume* inner, | |
370 | TGeoVolume* outer) | |
371 | { | |
372 | // Common stuff for setting up the FMD1, FMD2, and FMD3 geometries. | |
373 | // This includes putting the Honeycomb support plates and the rings | |
374 | // into the mother volumes. | |
375 | // | |
376 | // Parameeters: | |
377 | // d The detector geometry to use | |
378 | // mother The mother volume of the detector | |
379 | // zmother The midpoint in global coordinates of detector vol. | |
380 | // inner Pointer to inner ring volume | |
381 | // outer Pointer to outer ring volume | |
382 | // | |
383 | // Returns: | |
384 | // Pointer to mother (detector volume) | |
385 | // | |
386 | if (!d) return 0; | |
387 | // Loop over the defined rings | |
388 | for (int i = 0; i < 2; i++) { | |
389 | AliFMDRing* r = 0; | |
390 | Double_t lowr = 0; | |
391 | Double_t highr = 0; | |
392 | Double_t rz = 0; | |
393 | TGeoVolume* rvol = 0; | |
394 | switch (i) { | |
395 | case 0: | |
396 | r = d->GetInner(); | |
397 | lowr = d->GetInnerHoneyLowR(); | |
398 | highr = d->GetInnerHoneyHighR(); | |
399 | rz = d->GetInnerZ(); | |
400 | rvol = inner; | |
401 | break; | |
402 | case 1: | |
403 | r = d->GetOuter(); | |
404 | lowr = d->GetOuterHoneyLowR(); | |
405 | highr = d->GetOuterHoneyHighR(); | |
406 | rz = d->GetOuterZ(); | |
407 | rvol = outer; | |
408 | break; | |
409 | } | |
410 | if (!r) continue; | |
411 | Char_t c = r->GetId(); | |
412 | Int_t id = d->GetId(); | |
413 | Double_t hcThick = d->GetHoneycombThickness(); | |
414 | Double_t alThick = d->GetAlThickness(); | |
415 | Double_t z; | |
416 | if (zmother > 0) z = rz - zmother + r->GetRingDepth() / 2; | |
417 | else z = zmother - rz + r->GetRingDepth() / 2; | |
418 | // Place ring in mother volume | |
419 | mother->AddNode(rvol, Int_t(c), | |
420 | new TGeoTranslation(Form("FMD%d%c transform", id, c), | |
421 | 0, 0, z)); | |
422 | ||
423 | z += r->GetRingDepth() / 2 + hcThick / 2; | |
424 | // Top of Honeycomb | |
425 | TGeoTubeSeg* topHCShape = new TGeoTubeSeg(lowr, highr, hcThick/2, 0, 180); | |
426 | TGeoVolume* topHCVolume = new TGeoVolume(Form(fgkTopHCName, id, c), | |
427 | topHCShape, fAl); | |
428 | TGeoMatrix* topHCMatrix = | |
429 | new TGeoTranslation(Form("FMD%d%c top HC transform", id, c), 0, 0, z); | |
430 | mother->AddNode(topHCVolume, 0, topHCMatrix); | |
431 | ||
432 | // Air in top of honeycomb | |
433 | TGeoTubeSeg* topIHCShape = new TGeoTubeSeg(lowr+alThick, highr - alThick, | |
434 | (hcThick-alThick)/2, 0, 180); | |
435 | TGeoVolume* topIHCVolume = new TGeoVolume(Form(fgkTopIHCName, id, c), | |
436 | topIHCShape, fAir); | |
437 | topHCVolume->AddNode(topIHCVolume, 0); | |
438 | topHCVolume->VisibleDaughters(kFALSE); | |
439 | topHCVolume->SetVisibility(kTRUE); | |
440 | ||
441 | ||
442 | // Bottom of Honeycomb | |
443 | TGeoTubeSeg* botHCShape = new TGeoTubeSeg(lowr, highr, hcThick/2, | |
444 | 180, 360); | |
445 | TGeoVolume* botHCVolume = new TGeoVolume(Form(fgkBotHCName, id, c), | |
446 | botHCShape, fAl); | |
447 | TGeoMatrix* botHCMatrix = | |
448 | new TGeoTranslation(Form("FMD%d%c bottom HC transform", id, c), 0, 0, z); | |
449 | mother->AddNode(botHCVolume, 0, botHCMatrix); | |
450 | ||
451 | // Air in bot of honeycomb | |
452 | TGeoTubeSeg* botIHCShape = new TGeoTubeSeg(lowr+alThick, highr - alThick, | |
453 | (hcThick-alThick)/2, 180, 360); | |
454 | TGeoVolume* botIHCVolume = new TGeoVolume(Form(fgkBotIHCName, id, c), | |
455 | botIHCShape, fAir); | |
456 | botHCVolume->AddNode(botIHCVolume, 0); | |
457 | botHCVolume->VisibleDaughters(kFALSE); | |
458 | botHCVolume->SetVisibility(kTRUE); | |
459 | } | |
460 | mother->SetVisibility(kFALSE); | |
461 | mother->VisibleDaughters(kTRUE); | |
462 | return mother; | |
463 | } | |
464 | ||
465 | //____________________________________________________________________ | |
466 | TGeoVolume* | |
467 | AliFMDGeometryBuilder::FMD1Geometry(AliFMD1* fmd1, TGeoVolume* inner) | |
468 | { | |
469 | // Setup the FMD1 geometry. The FMD1 only has one ring, and no | |
470 | // special support as it is at the momement. | |
471 | // | |
472 | // See also AliFMDGeometryBuilder::DetectorGeometry | |
473 | // | |
474 | if (!fmd1 || !inner) return 0; | |
475 | Double_t rmin = fmd1->GetInner()->GetLowR(); | |
476 | Double_t rmax = fmd1->GetInnerHoneyHighR(); | |
477 | Double_t hcThick = fmd1->GetHoneycombThickness(); | |
478 | Double_t w = fmd1->GetInner()->GetRingDepth() + hcThick; | |
479 | Double_t z = fmd1->GetInnerZ() + w / 2; | |
480 | ||
481 | TGeoVolume* fmd1Volume = 0; | |
482 | if (!fUseAssembly) { | |
483 | TGeoTube* fmd1Shape = new TGeoTube(rmin, rmax, w / 2); | |
484 | fmd1Volume = new TGeoVolume(fmd1->GetName(), fmd1Shape, fAir); | |
485 | } | |
486 | else | |
487 | fmd1Volume = new TGeoVolumeAssembly(fmd1->GetName()); | |
488 | ||
489 | TGeoVolume* top = gGeoManager->GetVolume("ALIC"); | |
490 | TGeoMatrix* matrix = new TGeoTranslation("FMD1 transform", 0, 0, z); | |
491 | top->AddNode(fmd1Volume, fmd1->GetId(), matrix); | |
492 | ||
493 | return DetectorGeometry(fmd1, fmd1Volume, z, inner, 0); | |
494 | } | |
495 | ||
496 | //____________________________________________________________________ | |
497 | TGeoVolume* | |
498 | AliFMDGeometryBuilder::FMD2Geometry(AliFMD2* fmd2, | |
499 | TGeoVolume* inner, | |
500 | TGeoVolume* outer) | |
501 | { | |
502 | // Setup the FMD2 geometry. The FMD2 has no | |
503 | // special support as it is at the momement. | |
504 | // | |
505 | // See also AliFMDGeometryBuilder::DetectorGeometry | |
506 | // | |
507 | if (!fmd2 || !inner || !outer) return 0; | |
508 | Double_t rmin = fmd2->GetInner()->GetLowR(); | |
509 | Double_t rmax = fmd2->GetOuterHoneyHighR(); | |
510 | Double_t hcThick = fmd2->GetHoneycombThickness(); | |
511 | Double_t ow = fmd2->GetInner()->GetRingDepth(); | |
512 | Double_t iz = fmd2->GetInnerZ(); | |
513 | Double_t oz = fmd2->GetOuterZ(); | |
514 | Double_t w = TMath::Abs(oz - iz) + ow + hcThick; | |
515 | Double_t z = oz + w / 2; | |
516 | ||
517 | TGeoVolume* fmd2Volume = 0; | |
518 | if (!fUseAssembly) { | |
519 | TGeoTube* fmd2Shape = new TGeoTube(rmin, rmax, w / 2); | |
520 | fmd2Volume = new TGeoVolume(fmd2->GetName(), fmd2Shape, fAir); | |
521 | } | |
522 | else | |
523 | fmd2Volume = new TGeoVolumeAssembly(fmd2->GetName()); | |
524 | ||
525 | TGeoVolume* top = gGeoManager->GetVolume("ALIC"); | |
526 | TGeoMatrix* matrix = new TGeoTranslation("FMD2 transform", 0, 0, z); | |
527 | top->AddNode(fmd2Volume, fmd2->GetId(), matrix); | |
528 | ||
529 | return DetectorGeometry(fmd2, fmd2Volume, z, inner, outer); | |
530 | } | |
531 | ||
532 | //____________________________________________________________________ | |
533 | TGeoVolume* | |
534 | AliFMDGeometryBuilder::FMD3Geometry(AliFMD3* fmd3, | |
535 | TGeoVolume* inner, | |
536 | TGeoVolume* outer) | |
537 | { | |
538 | // Setup the FMD3 geometry. The FMD2 has a rather elaborate support | |
539 | // structure, as the support will also support the vacuum | |
540 | // beam-pipe. | |
541 | // | |
542 | // See also AliFMDGeometryBuilder::DetectorGeometry | |
543 | // | |
544 | if (!fmd3 || !inner || !outer) return 0; | |
545 | Double_t nlen = fmd3->GetNoseLength(); | |
546 | Double_t nz = fmd3->GetNoseZ(); | |
547 | Double_t noser1 = fmd3->GetNoseLowR(); | |
548 | Double_t noser2 = fmd3->GetNoseHighR(); | |
549 | Double_t conel = fmd3->GetConeLength(); | |
550 | Double_t backl = fmd3->GetBackLength(); | |
551 | Double_t backr1 = fmd3->GetBackLowR(); | |
552 | Double_t backr2 = fmd3->GetBackHighR(); | |
553 | Double_t zdist = conel - backl - nlen; | |
554 | Double_t tdist = backr2 - noser2; | |
555 | Double_t beaml = TMath::Sqrt(zdist * zdist + tdist * tdist); | |
556 | Double_t theta = -180. * TMath::ATan2(tdist, zdist) / TMath::Pi(); | |
557 | Double_t innerZ = fmd3->GetInnerZ(); | |
558 | Double_t innerZh = (innerZ - fmd3->GetInner()->GetRingDepth() | |
559 | - fmd3->GetHoneycombThickness()); | |
560 | Double_t outerZ = fmd3->GetOuterZ(); | |
561 | Double_t outerZh = (outerZ - fmd3->GetOuter()->GetRingDepth() | |
562 | - fmd3->GetHoneycombThickness()); | |
563 | Double_t innerr1 = fmd3->GetInner()->GetLowR(); | |
564 | // Double_t innerr2 = fmd3->GetInner()->GetHighR(); | |
565 | Double_t outerr1 = fmd3->GetOuter()->GetLowR(); | |
566 | // Double_t outerr2 = fmd3->GetOuter()->GetHighR(); | |
567 | Double_t flanger = fmd3->GetFlangeR(); | |
568 | Double_t minZ = TMath::Min(nz - conel, outerZh); | |
569 | Double_t z = fmd3->GetZ(); | |
570 | Double_t zi; | |
571 | ||
572 | // FMD3 volume | |
573 | TGeoVolume* fmd3Volume = 0; | |
574 | if (!fUseAssembly) { | |
575 | TGeoPcon* fmd3Shape = new TGeoPcon(0, 360, 8); | |
576 | zi = z - nz; | |
577 | fmd3Shape->DefineSection(0, zi, noser1, noser2); | |
578 | zi = z - (nz - nlen); | |
579 | fmd3Shape->DefineSection(1, zi, noser1, fmd3->ConeR(z - zi)+.15); | |
580 | zi = z - innerZ; | |
581 | fmd3Shape->DefineSection(2, zi, innerr1, fmd3->ConeR(z - zi)+.15); | |
582 | zi = z - innerZh; | |
583 | fmd3Shape->DefineSection(3, zi, innerr1, fmd3->ConeR(z - zi)+.15); | |
584 | fmd3Shape->DefineSection(4, zi, outerr1, fmd3->ConeR(z - zi)+.15); | |
585 | zi = z - nz + zdist + nlen; | |
586 | fmd3Shape->DefineSection(5, zi, outerr1, fmd3->ConeR(z - zi)+.15); | |
587 | zi = z - nz + nlen + zdist; | |
588 | fmd3Shape->DefineSection(6, zi, outerr1, flanger+1.5); | |
589 | zi = z - minZ; | |
590 | fmd3Shape->DefineSection(7, zi, outerr1, flanger+1.5); | |
591 | fmd3Volume = new TGeoVolume(fmd3->GetName(), fmd3Shape, fAir); | |
592 | } | |
593 | else | |
594 | fmd3Volume = new TGeoVolumeAssembly(fmd3->GetName()); | |
595 | ||
596 | TGeoRotation* rot = new TGeoRotation("FMD3 rotatation"); | |
597 | rot->RotateY(180); | |
598 | TGeoVolume* top = gGeoManager->GetVolume("ALIC"); | |
599 | TGeoMatrix* mmatrix = new TGeoCombiTrans("FMD3 transform", 0, 0, z, rot); | |
600 | top->AddNode(fmd3Volume, fmd3->GetId(), mmatrix); | |
601 | ||
602 | // Nose volume | |
603 | TGeoTube* noseShape = new TGeoTube(noser1, noser2, nlen / 2); | |
604 | TGeoVolume* noseVolume = new TGeoVolume(fgkNoseName, noseShape, fC); | |
605 | zi = z - nz + nlen / 2; | |
606 | TGeoMatrix* nmatrix = new TGeoTranslation("FMD3 Nose translation", 0, 0, zi); | |
607 | // fmd3Volume->AddNodeOverlap(noseVolume, 0, nmatrix); | |
608 | fmd3Volume->AddNode(noseVolume, 0, nmatrix); | |
609 | ||
610 | // Back | |
611 | TGeoTube* backShape = new TGeoTube(backr1, backr2, backl / 2); | |
612 | TGeoVolume* backVolume = new TGeoVolume(fgkBackName, backShape, fC); | |
613 | zi = z - nz + conel - backl / 2; | |
614 | TGeoMatrix* bmatrix = new TGeoTranslation("FMD3 Back translation", 0, 0, zi); | |
615 | fmd3Volume->AddNode(backVolume, 0, bmatrix); | |
616 | ||
617 | Int_t n; | |
618 | Double_t r; | |
619 | // The flanges | |
620 | TGeoBBox* flangeShape = new TGeoBBox((flanger - backr2) / 2, | |
621 | fmd3->GetBeamWidth() / 2, | |
622 | backl / 2); | |
623 | TGeoVolume* flangeVolume = new TGeoVolume(fgkFlangeName, flangeShape, fC); | |
624 | n = fmd3->GetNFlange(); | |
625 | r = backr2 + (flanger - backr2) / 2; | |
626 | for (Int_t i = 0; i < n; i++) { | |
627 | Double_t phi = 360. / n * i + 180. / n; | |
628 | Double_t x = r * TMath::Cos(TMath::Pi() / 180 * phi); | |
629 | Double_t y = r * TMath::Sin(TMath::Pi() / 180 * phi); | |
630 | TGeoRotation* rot = new TGeoRotation(Form("FMD3 Flange rotation %d", i)); | |
631 | rot->RotateZ(phi); | |
632 | TGeoMatrix* matrix = new TGeoCombiTrans(Form("FMD3 flange transform %d", | |
633 | i), x, y, zi, rot); | |
634 | // fmd3Volume->AddNodeOverlap(flangeVolume, i, matrix); | |
635 | fmd3Volume->AddNode(flangeVolume, i, matrix); | |
636 | ||
637 | } | |
638 | ||
639 | // The Beams | |
640 | TGeoBBox* beamShape = new TGeoBBox(fmd3->GetBeamThickness() / 2, | |
641 | fmd3->GetBeamWidth() / 2 - .1, | |
642 | beaml / 2); | |
643 | TGeoVolume* beamVolume = new TGeoVolume(fgkBeamName, beamShape, fC); | |
644 | n = fmd3->GetNBeam(); | |
645 | r = noser2 + tdist / 2; | |
646 | zi = z - nz + nlen + zdist / 2; | |
647 | for (Int_t i = 0; i < n; i++) { | |
648 | Double_t phi = 360. / n * i; | |
649 | Double_t x = r * TMath::Cos(TMath::Pi() / 180 * phi); | |
650 | Double_t y = r * TMath::Sin(TMath::Pi() / 180 * phi); | |
651 | TGeoRotation* rot = new TGeoRotation(Form("FMD3 beam rotation %d", i)); | |
652 | // Order is important | |
653 | rot->RotateY(-theta); | |
654 | rot->RotateZ(phi); | |
655 | TGeoMatrix* matrix = new TGeoCombiTrans(Form("FMD3 beam transform %d", i), | |
656 | x, y, zi, rot); | |
657 | fmd3Volume->AddNode(beamVolume, i, matrix); | |
658 | } | |
659 | ||
660 | ||
661 | return DetectorGeometry(fmd3, fmd3Volume, z, inner, outer); | |
662 | } | |
663 | ||
664 | //____________________________________________________________________ | |
665 | void | |
666 | AliFMDGeometryBuilder::Exec(Option_t*) | |
667 | { | |
668 | // Setup up the FMD geometry. | |
669 | AliDebug(1, Form("\tGeometry options: %s, %s", | |
670 | (fDetailed ? "divided into strips" : "one volume"), | |
671 | (fUseAssembly ? "within assemblies" : "in real volumes"))); | |
672 | if (!gGeoManager) { | |
673 | AliFatal("No TGeoManager defined"); | |
674 | return; | |
675 | } | |
676 | ||
677 | fSi = gGeoManager->GetMedium("FMD_Si$"); | |
678 | fC = gGeoManager->GetMedium("FMD_Carbon$"); | |
679 | fAl = gGeoManager->GetMedium("FMD_Aluminum$"); | |
680 | fChip = gGeoManager->GetMedium("FMD_Si Chip$"); | |
681 | fAir = gGeoManager->GetMedium("FMD_Air$"); | |
682 | fPCB = gGeoManager->GetMedium("FMD_PCB$"); | |
683 | fPlastic = gGeoManager->GetMedium("FMD_Plastic$"); | |
684 | fCopper = gGeoManager->GetMedium("FMD_Copper$"); | |
685 | ||
686 | if (!fSi||!fC||!fAl||!fChip||!fAir||!fPCB||!fPlastic||!fCopper) { | |
687 | AliError("Failed to get some or all tracking mediums"); | |
688 | return; | |
689 | } | |
690 | AliFMDGeometry* fmd = AliFMDGeometry::Instance(); | |
691 | TGeoVolume* inner = RingGeometry(fmd->GetInner()); | |
692 | TGeoVolume* outer = RingGeometry(fmd->GetOuter()); | |
693 | if (!inner || !outer) { | |
694 | AliError("Failed to create one of the ring volumes"); | |
695 | return; | |
696 | } | |
697 | FMD1Geometry(fmd->GetFMD1(), inner); | |
698 | FMD2Geometry(fmd->GetFMD2(), inner, outer); | |
699 | FMD3Geometry(fmd->GetFMD3(), inner, outer); | |
700 | #ifndef USE_PRE_MOVE | |
701 | fmd->SetSectorOff(fSectorOff); | |
702 | fmd->SetModuleOff(fModuleOff); | |
703 | fmd->SetRingOff(fRingOff); | |
704 | fmd->SetDetectorOff(fDetectorOff); | |
705 | fmd->SetActive(fActiveId.fArray, fActiveId.fN); | |
706 | #endif | |
707 | // fmd->ExtractGeomInfo(); | |
708 | ||
709 | } | |
710 | ||
711 | ||
712 | //____________________________________________________________________ | |
713 | // | |
714 | // EOF | |
715 | // |