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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 | $Log$ |
16bf9884 |
18 | Revision 1.13 2001/08/02 08:30:45 cblume |
19 | Fix positions of cooling material |
20 | |
52052b58 |
21 | Revision 1.12 2001/05/21 16:45:47 hristov |
22 | Last minute changes (C.Blume) |
23 | |
db30bf0f |
24 | Revision 1.11 2001/05/11 07:56:12 hristov |
25 | Consistent declarations needed on Alpha |
26 | |
ff821236 |
27 | Revision 1.10 2001/05/07 08:08:05 cblume |
28 | Update of TRD code |
29 | |
a2b90f83 |
30 | Revision 1.9 2001/03/27 12:48:33 cblume |
31 | Correct for volume overlaps |
32 | |
b42a9f88 |
33 | Revision 1.8 2001/03/13 09:30:35 cblume |
34 | Update of digitization. Moved digit branch definition to AliTRD |
35 | |
6244debe |
36 | Revision 1.7 2001/02/14 18:22:26 cblume |
37 | Change in the geometry of the padplane |
38 | |
71d9fa7b |
39 | Revision 1.6 2000/11/01 14:53:20 cblume |
40 | Merge with TRD-develop |
41 | |
793ff80c |
42 | Revision 1.1.4.7 2000/10/16 01:16:53 cblume |
43 | Changed timebin 0 to be the one closest to the readout |
44 | |
45 | Revision 1.1.4.6 2000/10/15 23:35:57 cblume |
46 | Include geometry constants as static member |
47 | |
48 | Revision 1.1.4.5 2000/10/06 16:49:46 cblume |
49 | Made Getters const |
50 | |
51 | Revision 1.1.4.4 2000/10/04 16:34:58 cblume |
52 | Replace include files by forward declarations |
53 | |
54 | Revision 1.1.4.3 2000/09/22 14:43:40 cblume |
55 | Allow the pad/timebin-dimensions to be changed after initialization |
56 | |
57 | Revision 1.1.4.2 2000/09/18 13:37:01 cblume |
58 | Minor coding corrections |
59 | |
60 | Revision 1.5 2000/10/02 21:28:19 fca |
61 | Removal of useless dependecies via forward declarations |
62 | |
63 | Revision 1.4 2000/06/08 18:32:58 cblume |
64 | Make code compliant to coding conventions |
65 | |
66 | Revision 1.3 2000/06/07 16:25:37 cblume |
67 | Try to remove compiler warnings on Sun and HP |
68 | |
69 | Revision 1.2 2000/05/08 16:17:27 cblume |
70 | Merge TRD-develop |
71 | |
72 | Revision 1.1.4.1 2000/05/08 14:45:55 cblume |
73 | Bug fix in RotateBack(). Geometry update |
74 | |
94de3818 |
75 | Revision 1.4 2000/06/08 18:32:58 cblume |
76 | Make code compliant to coding conventions |
77 | |
8230f242 |
78 | Revision 1.3 2000/06/07 16:25:37 cblume |
79 | Try to remove compiler warnings on Sun and HP |
80 | |
9d0b222b |
81 | Revision 1.2 2000/05/08 16:17:27 cblume |
82 | Merge TRD-develop |
83 | |
6f1e466d |
84 | Revision 1.1.4.1 2000/05/08 14:45:55 cblume |
85 | Bug fix in RotateBack(). Geometry update |
86 | |
87 | Revision 1.1 2000/02/28 19:00:44 cblume |
88 | Add new TRD classes |
89 | |
f7336fa3 |
90 | */ |
91 | |
92 | /////////////////////////////////////////////////////////////////////////////// |
93 | // // |
94 | // TRD geometry class // |
95 | // // |
96 | /////////////////////////////////////////////////////////////////////////////// |
97 | |
793ff80c |
98 | #include "AliMC.h" |
99 | |
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100 | #include "AliTRDgeometry.h" |
101 | #include "AliTRDrecPoint.h" |
94de3818 |
102 | #include "AliMC.h" |
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103 | |
104 | ClassImp(AliTRDgeometry) |
105 | |
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106 | //_____________________________________________________________________________ |
107 | |
108 | // |
109 | // The geometry constants |
110 | // |
111 | const Int_t AliTRDgeometry::fgkNsect = kNsect; |
112 | const Int_t AliTRDgeometry::fgkNplan = kNplan; |
113 | const Int_t AliTRDgeometry::fgkNcham = kNcham; |
114 | const Int_t AliTRDgeometry::fgkNdet = kNdet; |
115 | |
116 | // |
117 | // Dimensions of the detector |
118 | // |
119 | const Float_t AliTRDgeometry::fgkRmin = 294.0; |
120 | const Float_t AliTRDgeometry::fgkRmax = 368.0; |
121 | |
122 | const Float_t AliTRDgeometry::fgkZmax1 = 378.35; |
123 | const Float_t AliTRDgeometry::fgkZmax2 = 302.0; |
124 | |
125 | const Float_t AliTRDgeometry::fgkSheight = 74.0; |
126 | const Float_t AliTRDgeometry::fgkSwidth1 = 99.613; |
127 | const Float_t AliTRDgeometry::fgkSwidth2 = 125.707; |
128 | const Float_t AliTRDgeometry::fgkSlenTR1 = 751.0; |
129 | const Float_t AliTRDgeometry::fgkSlenTR2 = 313.5; |
130 | const Float_t AliTRDgeometry::fgkSlenTR3 = 159.5; |
131 | |
132 | const Float_t AliTRDgeometry::fgkCheight = 11.0; |
133 | const Float_t AliTRDgeometry::fgkCspace = 1.6; |
134 | const Float_t AliTRDgeometry::fgkCathick = 1.0; |
135 | const Float_t AliTRDgeometry::fgkCcthick = 1.0; |
136 | const Float_t AliTRDgeometry::fgkCaframe = 2.675; |
137 | const Float_t AliTRDgeometry::fgkCcframe = AliTRDgeometry::fgkCheight |
138 | - AliTRDgeometry::fgkCaframe; |
139 | |
140 | // |
141 | // Thickness of the the material layers |
142 | // |
db30bf0f |
143 | const Float_t AliTRDgeometry::fgkRaThick = 0.3646; |
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144 | const Float_t AliTRDgeometry::fgkMyThick = 0.005; |
145 | const Float_t AliTRDgeometry::fgkXeThick = 3.5; |
146 | const Float_t AliTRDgeometry::fgkDrThick = 3.0; |
147 | const Float_t AliTRDgeometry::fgkAmThick = AliTRDgeometry::fgkXeThick |
148 | - AliTRDgeometry::fgkDrThick; |
149 | const Float_t AliTRDgeometry::fgkCuThick = 0.001; |
150 | const Float_t AliTRDgeometry::fgkSuThick = 0.06; |
151 | const Float_t AliTRDgeometry::fgkFeThick = 0.0044; |
152 | const Float_t AliTRDgeometry::fgkCoThick = 0.02; |
db30bf0f |
153 | //const Float_t AliTRDgeometry::fgkWaThick = 0.01; |
154 | const Float_t AliTRDgeometry::fgkWaThick = 0.02; |
793ff80c |
155 | |
156 | // |
157 | // Position of the material layers |
158 | // |
b42a9f88 |
159 | const Float_t AliTRDgeometry::fgkRaZpos = -1.74; |
b42a9f88 |
160 | const Float_t AliTRDgeometry::fgkMyZpos = 0.6550; |
161 | const Float_t AliTRDgeometry::fgkDrZpos = 2.1600; |
162 | const Float_t AliTRDgeometry::fgkAmZpos = 3.9100; |
793ff80c |
163 | const Float_t AliTRDgeometry::fgkCuZpos = -1.3370; |
164 | const Float_t AliTRDgeometry::fgkSuZpos = 0.0000; |
52052b58 |
165 | //const Float_t AliTRDgeometry::fgkFeZpos = 1.3053; |
166 | //const Float_t AliTRDgeometry::fgkCoZpos = 1.3175; |
167 | //const Float_t AliTRDgeometry::fgkWaZpos = 1.3325; |
168 | const Float_t AliTRDgeometry::fgkFeZpos = 1.2853; |
169 | const Float_t AliTRDgeometry::fgkCoZpos = 1.2975; |
170 | const Float_t AliTRDgeometry::fgkWaZpos = 1.3175; |
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171 | |
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172 | //_____________________________________________________________________________ |
173 | AliTRDgeometry::AliTRDgeometry():AliGeometry() |
174 | { |
175 | // |
176 | // AliTRDgeometry default constructor |
177 | // |
178 | |
179 | Init(); |
180 | |
181 | } |
182 | |
183 | //_____________________________________________________________________________ |
184 | AliTRDgeometry::~AliTRDgeometry() |
185 | { |
8230f242 |
186 | // |
187 | // AliTRDgeometry destructor |
188 | // |
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189 | |
190 | } |
191 | |
192 | //_____________________________________________________________________________ |
193 | void AliTRDgeometry::Init() |
194 | { |
195 | // |
196 | // Initializes the geometry parameter |
197 | // |
198 | |
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199 | Int_t isect; |
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200 | |
201 | // The width of the chambers |
793ff80c |
202 | fCwidth[0] = 99.6; |
203 | fCwidth[1] = 104.1; |
204 | fCwidth[2] = 108.5; |
205 | fCwidth[3] = 112.9; |
206 | fCwidth[4] = 117.4; |
207 | fCwidth[5] = 121.8; |
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208 | |
209 | // The maximum number of pads |
210 | // and the position of pad 0,0,0 |
211 | // |
212 | // chambers seen from the top: |
213 | // +----------------------------+ |
214 | // | | |
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215 | // | | ^ |
216 | // | | rphi| |
217 | // | | | |
218 | // |0 | | |
219 | // +----------------------------+ +------> |
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220 | // z |
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221 | // chambers seen from the side: ^ |
222 | // +----------------------------+ drift| |
223 | // |0 | | |
224 | // | | | |
225 | // +----------------------------+ +------> |
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226 | // z |
227 | // |
a2b90f83 |
228 | // IMPORTANT: time bin 0 is now the first one in the drift region |
229 | // closest to the readout !!! |
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230 | // |
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231 | |
232 | // The pad column (rphi-direction) |
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233 | SetNColPad(96); |
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234 | |
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235 | // The number of time bins. Default is 100 ns timbin size |
6244debe |
236 | SetNTimeBin(15); |
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237 | |
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238 | // Additional time bins before and after the drift region. |
239 | // Default is to only sample the drift region |
240 | SetExpandTimeBin(0,0); |
241 | |
793ff80c |
242 | // The rotation matrix elements |
243 | Float_t phi = 0; |
244 | for (isect = 0; isect < fgkNsect; isect++) { |
245 | phi = -2.0 * kPI / (Float_t) fgkNsect * ((Float_t) isect + 0.5); |
246 | fRotA11[isect] = TMath::Cos(phi); |
247 | fRotA12[isect] = TMath::Sin(phi); |
248 | fRotA21[isect] = TMath::Sin(phi); |
249 | fRotA22[isect] = TMath::Cos(phi); |
250 | phi = -1.0 * phi; |
251 | fRotB11[isect] = TMath::Cos(phi); |
252 | fRotB12[isect] = TMath::Sin(phi); |
253 | fRotB21[isect] = TMath::Sin(phi); |
254 | fRotB22[isect] = TMath::Cos(phi); |
255 | } |
256 | |
257 | } |
258 | |
259 | //_____________________________________________________________________________ |
a2b90f83 |
260 | void AliTRDgeometry::SetNColPad(const Int_t npad) |
793ff80c |
261 | { |
262 | // |
71d9fa7b |
263 | // Redefines the number of pads in column direction |
793ff80c |
264 | // |
265 | |
793ff80c |
266 | for (Int_t iplan = 0; iplan < fgkNplan; iplan++) { |
71d9fa7b |
267 | fColMax[iplan] = npad; |
268 | fColPadSize[iplan] = (fCwidth[iplan] - 2. * fgkCcthick) / fColMax[iplan]; |
269 | fCol0[iplan] = -fCwidth[iplan]/2. + fgkCcthick; |
f7336fa3 |
270 | } |
271 | |
793ff80c |
272 | } |
273 | |
274 | //_____________________________________________________________________________ |
a2b90f83 |
275 | void AliTRDgeometry::SetNTimeBin(const Int_t nbin) |
793ff80c |
276 | { |
277 | // |
a2b90f83 |
278 | // Redefines the number of time bins in the drift region. |
279 | // The time bin width is defined by the length of the |
280 | // drift region divided by <nbin>. |
793ff80c |
281 | // |
282 | |
71d9fa7b |
283 | fTimeMax = nbin; |
284 | fTimeBinSize = fgkDrThick / ((Float_t) fTimeMax); |
793ff80c |
285 | for (Int_t iplan = 0; iplan < fgkNplan; iplan++) { |
286 | fTime0[iplan] = fgkRmin + fgkCcframe/2. + fgkDrZpos + 0.5 * fgkDrThick |
287 | + iplan * (fgkCheight + fgkCspace); |
288 | } |
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289 | |
290 | } |
291 | |
292 | //_____________________________________________________________________________ |
293 | void AliTRDgeometry::CreateGeometry(Int_t *idtmed) |
294 | { |
295 | // |
296 | // Create the TRD geometry |
297 | // |
298 | // Author: Christoph Blume (C.Blume@gsi.de) 20/07/99 |
299 | // |
300 | // The volumes: |
301 | // TRD1-3 (Air) --- The TRD mother volumes for one sector. |
302 | // To be placed into the spaceframe. |
303 | // |
304 | // UAFI(/M/O) (Al) --- The aluminum frame of the inner(/middle/outer) chambers (readout) |
305 | // UCFI(/M/O) (C) --- The carbon frame of the inner(/middle/outer) chambers |
306 | // (driftchamber + radiator) |
307 | // UAII(/M/O) (Air) --- The inner part of the readout of the inner(/middle/outer) chambers |
308 | // UFII(/M/O) (Air) --- The inner part of the chamner and radiator of the |
309 | // inner(/middle/outer) chambers |
310 | // |
311 | // The material layers in one chamber: |
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312 | // UL03 (Rohacell) --- The radiator |
313 | // UL04 (Mylar) --- Entrance window to the driftvolume and HV-cathode |
314 | // UL05 (Xe) --- The driftvolume |
315 | // UL06 (Xe) --- The amplification region |
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316 | // |
db30bf0f |
317 | // UL07 (Cu) --- The pad plane |
318 | // UL08 (G10) --- The Nomex honeycomb support structure |
319 | // UL09 (Cu) --- FEE and signal lines |
320 | // UL10 (Al) --- The cooling devices |
321 | // UL11 (Water) --- The cooling water |
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322 | |
8230f242 |
323 | const Int_t kNparCha = 3; |
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324 | |
8230f242 |
325 | Float_t parDum[3]; |
326 | Float_t parCha[kNparCha]; |
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327 | |
328 | Float_t xpos, ypos, zpos; |
329 | |
330 | // The aluminum frames - readout + electronics (Al) |
331 | // The inner chambers |
8230f242 |
332 | gMC->Gsvolu("UAFI","BOX ",idtmed[1301-1],parDum,0); |
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333 | // The middle chambers |
8230f242 |
334 | gMC->Gsvolu("UAFM","BOX ",idtmed[1301-1],parDum,0); |
f7336fa3 |
335 | // The outer chambers |
8230f242 |
336 | gMC->Gsvolu("UAFO","BOX ",idtmed[1301-1],parDum,0); |
f7336fa3 |
337 | |
338 | // The inner part of the aluminum frames (Air) |
339 | // The inner chambers |
8230f242 |
340 | gMC->Gsvolu("UAII","BOX ",idtmed[1302-1],parDum,0); |
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341 | // The middle chambers |
8230f242 |
342 | gMC->Gsvolu("UAIM","BOX ",idtmed[1302-1],parDum,0); |
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343 | // The outer chambers |
8230f242 |
344 | gMC->Gsvolu("UAIO","BOX ",idtmed[1302-1],parDum,0); |
f7336fa3 |
345 | |
346 | // The carbon frames - radiator + driftchamber (C) |
347 | // The inner chambers |
8230f242 |
348 | gMC->Gsvolu("UCFI","BOX ",idtmed[1307-1],parDum,0); |
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349 | // The middle chambers |
8230f242 |
350 | gMC->Gsvolu("UCFM","BOX ",idtmed[1307-1],parDum,0); |
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351 | // The outer chambers |
8230f242 |
352 | gMC->Gsvolu("UCFO","BOX ",idtmed[1307-1],parDum,0); |
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353 | |
354 | // The inner part of the carbon frames (Air) |
355 | // The inner chambers |
8230f242 |
356 | gMC->Gsvolu("UCII","BOX ",idtmed[1302-1],parDum,0); |
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357 | // The middle chambers |
8230f242 |
358 | gMC->Gsvolu("UCIM","BOX ",idtmed[1302-1],parDum,0); |
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359 | // The outer chambers |
8230f242 |
360 | gMC->Gsvolu("UCIO","BOX ",idtmed[1302-1],parDum,0); |
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361 | |
362 | // The material layers inside the chambers |
8230f242 |
363 | parCha[0] = -1.; |
364 | parCha[1] = -1.; |
db30bf0f |
365 | // Rohacell layer (radiator) |
793ff80c |
366 | parCha[2] = fgkRaThick/2; |
db30bf0f |
367 | gMC->Gsvolu("UL03","BOX ",idtmed[1315-1],parCha,kNparCha); |
f7336fa3 |
368 | // Mylar layer (entrance window + HV cathode) |
793ff80c |
369 | parCha[2] = fgkMyThick/2; |
8230f242 |
370 | gMC->Gsvolu("UL04","BOX ",idtmed[1308-1],parCha,kNparCha); |
db30bf0f |
371 | // Xe/Isobutane layer (drift volume) |
793ff80c |
372 | parCha[2] = fgkDrThick/2.; |
8230f242 |
373 | gMC->Gsvolu("UL05","BOX ",idtmed[1309-1],parCha,kNparCha); |
db30bf0f |
374 | // Xe/Isobutane layer (amplification volume) |
793ff80c |
375 | parCha[2] = fgkAmThick/2.; |
8230f242 |
376 | gMC->Gsvolu("UL06","BOX ",idtmed[1309-1],parCha,kNparCha); |
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377 | |
378 | // Cu layer (pad plane) |
793ff80c |
379 | parCha[2] = fgkCuThick/2; |
8230f242 |
380 | gMC->Gsvolu("UL07","BOX ",idtmed[1305-1],parCha,kNparCha); |
f7336fa3 |
381 | // G10 layer (support structure) |
793ff80c |
382 | parCha[2] = fgkSuThick/2; |
8230f242 |
383 | gMC->Gsvolu("UL08","BOX ",idtmed[1313-1],parCha,kNparCha); |
f7336fa3 |
384 | // Cu layer (FEE + signal lines) |
793ff80c |
385 | parCha[2] = fgkFeThick/2; |
8230f242 |
386 | gMC->Gsvolu("UL09","BOX ",idtmed[1305-1],parCha,kNparCha); |
db30bf0f |
387 | // Al layer (cooling devices) |
793ff80c |
388 | parCha[2] = fgkCoThick/2; |
db30bf0f |
389 | gMC->Gsvolu("UL10","BOX ",idtmed[1301-1],parCha,kNparCha); |
f7336fa3 |
390 | // Water layer (cooling) |
793ff80c |
391 | parCha[2] = fgkWaThick/2; |
8230f242 |
392 | gMC->Gsvolu("UL11","BOX ",idtmed[1314-1],parCha,kNparCha); |
f7336fa3 |
393 | |
394 | // Position the layers in the chambers |
395 | xpos = 0; |
396 | ypos = 0; |
397 | |
db30bf0f |
398 | // Rohacell layer (radiator) |
793ff80c |
399 | zpos = fgkRaZpos; |
db30bf0f |
400 | gMC->Gspos("UL03",1,"UCII",xpos,ypos,zpos,0,"ONLY"); |
401 | gMC->Gspos("UL03",2,"UCIM",xpos,ypos,zpos,0,"ONLY"); |
402 | gMC->Gspos("UL03",3,"UCIO",xpos,ypos,zpos,0,"ONLY"); |
f7336fa3 |
403 | // Mylar layer (entrance window + HV cathode) |
793ff80c |
404 | zpos = fgkMyZpos; |
f7336fa3 |
405 | gMC->Gspos("UL04",1,"UCII",xpos,ypos,zpos,0,"ONLY"); |
406 | gMC->Gspos("UL04",2,"UCIM",xpos,ypos,zpos,0,"ONLY"); |
407 | gMC->Gspos("UL04",3,"UCIO",xpos,ypos,zpos,0,"ONLY"); |
408 | // Xe/Isobutane layer (drift volume) |
793ff80c |
409 | zpos = fgkDrZpos; |
f7336fa3 |
410 | gMC->Gspos("UL05",1,"UCII",xpos,ypos,zpos,0,"ONLY"); |
411 | gMC->Gspos("UL05",2,"UCIM",xpos,ypos,zpos,0,"ONLY"); |
412 | gMC->Gspos("UL05",3,"UCIO",xpos,ypos,zpos,0,"ONLY"); |
413 | // Xe/Isobutane layer (amplification volume) |
793ff80c |
414 | zpos = fgkAmZpos; |
f7336fa3 |
415 | gMC->Gspos("UL06",1,"UCII",xpos,ypos,zpos,0,"ONLY"); |
416 | gMC->Gspos("UL06",2,"UCIM",xpos,ypos,zpos,0,"ONLY"); |
417 | gMC->Gspos("UL06",3,"UCIO",xpos,ypos,zpos,0,"ONLY"); |
f7336fa3 |
418 | // Cu layer (pad plane) |
793ff80c |
419 | zpos = fgkCuZpos; |
f7336fa3 |
420 | gMC->Gspos("UL07",1,"UAII",xpos,ypos,zpos,0,"ONLY"); |
421 | gMC->Gspos("UL07",2,"UAIM",xpos,ypos,zpos,0,"ONLY"); |
422 | gMC->Gspos("UL07",3,"UAIO",xpos,ypos,zpos,0,"ONLY"); |
423 | // G10 layer (support structure) |
793ff80c |
424 | zpos = fgkSuZpos; |
f7336fa3 |
425 | gMC->Gspos("UL08",1,"UAII",xpos,ypos,zpos,0,"ONLY"); |
426 | gMC->Gspos("UL08",2,"UAIM",xpos,ypos,zpos,0,"ONLY"); |
427 | gMC->Gspos("UL08",3,"UAIO",xpos,ypos,zpos,0,"ONLY"); |
428 | // Cu layer (FEE + signal lines) |
793ff80c |
429 | zpos = fgkFeZpos; |
f7336fa3 |
430 | gMC->Gspos("UL09",1,"UAII",xpos,ypos,zpos,0,"ONLY"); |
431 | gMC->Gspos("UL09",2,"UAIM",xpos,ypos,zpos,0,"ONLY"); |
432 | gMC->Gspos("UL09",3,"UAIO",xpos,ypos,zpos,0,"ONLY"); |
db30bf0f |
433 | // Al layer (cooling devices) |
793ff80c |
434 | zpos = fgkCoZpos; |
f7336fa3 |
435 | gMC->Gspos("UL10",1,"UAII",xpos,ypos,zpos,0,"ONLY"); |
436 | gMC->Gspos("UL10",2,"UAIM",xpos,ypos,zpos,0,"ONLY"); |
437 | gMC->Gspos("UL10",3,"UAIO",xpos,ypos,zpos,0,"ONLY"); |
438 | // Water layer (cooling) |
793ff80c |
439 | zpos = fgkWaZpos; |
f7336fa3 |
440 | gMC->Gspos("UL11",1,"UAII",xpos,ypos,zpos,0,"ONLY"); |
441 | gMC->Gspos("UL11",1,"UAIM",xpos,ypos,zpos,0,"ONLY"); |
442 | gMC->Gspos("UL11",1,"UAIO",xpos,ypos,zpos,0,"ONLY"); |
443 | |
444 | } |
445 | |
446 | //_____________________________________________________________________________ |
94de3818 |
447 | Bool_t AliTRDgeometry::Local2Global(Int_t idet, Float_t *local, Float_t *global) const |
f7336fa3 |
448 | { |
449 | // |
450 | // Converts local pad-coordinates (row,col,time) into |
451 | // global ALICE reference frame coordinates (x,y,z) |
452 | // |
453 | |
793ff80c |
454 | Int_t icham = GetChamber(idet); // Chamber info (0-4) |
455 | Int_t isect = GetSector(idet); // Sector info (0-17) |
456 | Int_t iplan = GetPlane(idet); // Plane info (0-5) |
f7336fa3 |
457 | |
6f1e466d |
458 | return Local2Global(iplan,icham,isect,local,global); |
f7336fa3 |
459 | |
460 | } |
461 | |
462 | //_____________________________________________________________________________ |
463 | Bool_t AliTRDgeometry::Local2Global(Int_t iplan, Int_t icham, Int_t isect |
94de3818 |
464 | , Float_t *local, Float_t *global) const |
f7336fa3 |
465 | { |
466 | // |
467 | // Converts local pad-coordinates (row,col,time) into |
468 | // global ALICE reference frame coordinates (x,y,z) |
469 | // |
470 | |
793ff80c |
471 | Int_t idet = GetDetector(iplan,icham,isect); // Detector number |
f7336fa3 |
472 | |
16bf9884 |
473 | Float_t padRow = local[0]+0.5; // Pad Row position |
474 | Float_t padCol = local[1]+0.5; // Pad Column position |
475 | Float_t timeSlice = local[2]+0.5; // Time "position" |
f7336fa3 |
476 | |
793ff80c |
477 | Float_t row0 = GetRow0(iplan,icham,isect); |
478 | Float_t col0 = GetCol0(iplan); |
479 | Float_t time0 = GetTime0(iplan); |
f7336fa3 |
480 | |
793ff80c |
481 | Float_t rot[3]; |
f7336fa3 |
482 | |
483 | // calculate (x,y,z) position in rotated chamber |
a2b90f83 |
484 | rot[0] = time0 - (timeSlice - fTimeBefore) * fTimeBinSize; |
485 | rot[1] = col0 + padCol * fColPadSize[iplan]; |
486 | rot[2] = row0 + padRow * fRowPadSize[iplan][icham][isect]; |
f7336fa3 |
487 | |
488 | // Rotate back to original position |
489 | return RotateBack(idet,rot,global); |
490 | |
491 | } |
492 | |
493 | //_____________________________________________________________________________ |
793ff80c |
494 | Bool_t AliTRDgeometry::Rotate(Int_t d, Float_t *pos, Float_t *rot) const |
f7336fa3 |
495 | { |
496 | // |
497 | // Rotates all chambers in the position of sector 0 and transforms |
498 | // the coordinates in the ALICE restframe <pos> into the |
499 | // corresponding local frame <rot>. |
500 | // |
501 | |
793ff80c |
502 | Int_t sector = GetSector(d); |
f7336fa3 |
503 | |
793ff80c |
504 | rot[0] = pos[0] * fRotA11[sector] + pos[1] * fRotA12[sector]; |
505 | rot[1] = -pos[0] * fRotA21[sector] + pos[1] * fRotA22[sector]; |
f7336fa3 |
506 | rot[2] = pos[2]; |
507 | |
508 | return kTRUE; |
509 | |
510 | } |
511 | |
512 | //_____________________________________________________________________________ |
94de3818 |
513 | Bool_t AliTRDgeometry::RotateBack(Int_t d, Float_t *rot, Float_t *pos) const |
f7336fa3 |
514 | { |
515 | // |
516 | // Rotates a chambers from the position of sector 0 into its |
517 | // original position and transforms the corresponding local frame |
518 | // coordinates <rot> into the coordinates of the ALICE restframe <pos>. |
519 | // |
520 | |
793ff80c |
521 | Int_t sector = GetSector(d); |
f7336fa3 |
522 | |
793ff80c |
523 | pos[0] = rot[0] * fRotB11[sector] + rot[1] * fRotB12[sector]; |
524 | pos[1] = -rot[0] * fRotB21[sector] + rot[1] * fRotB22[sector]; |
6f1e466d |
525 | pos[2] = rot[2]; |
f7336fa3 |
526 | |
527 | return kTRUE; |
528 | |
529 | } |
530 | |
531 | //_____________________________________________________________________________ |
ff821236 |
532 | Int_t AliTRDgeometry::GetDetector(const Int_t p, const Int_t c, const Int_t s) const |
f7336fa3 |
533 | { |
534 | // |
535 | // Convert plane / chamber / sector into detector number |
536 | // |
537 | |
793ff80c |
538 | return (p + c * fgkNplan + s * fgkNplan * fgkNcham); |
f7336fa3 |
539 | |
540 | } |
541 | |
542 | //_____________________________________________________________________________ |
ff821236 |
543 | Int_t AliTRDgeometry::GetPlane(const Int_t d) const |
f7336fa3 |
544 | { |
545 | // |
546 | // Reconstruct the plane number from the detector number |
547 | // |
548 | |
793ff80c |
549 | return ((Int_t) (d % fgkNplan)); |
f7336fa3 |
550 | |
551 | } |
552 | |
553 | //_____________________________________________________________________________ |
ff821236 |
554 | Int_t AliTRDgeometry::GetChamber(const Int_t d) const |
f7336fa3 |
555 | { |
556 | // |
557 | // Reconstruct the chamber number from the detector number |
558 | // |
559 | |
793ff80c |
560 | return ((Int_t) (d % (fgkNplan * fgkNcham)) / fgkNplan); |
f7336fa3 |
561 | |
562 | } |
563 | |
564 | //_____________________________________________________________________________ |
ff821236 |
565 | Int_t AliTRDgeometry::GetSector(const Int_t d) const |
f7336fa3 |
566 | { |
567 | // |
568 | // Reconstruct the sector number from the detector number |
569 | // |
570 | |
793ff80c |
571 | return ((Int_t) (d / (fgkNplan * fgkNcham))); |
f7336fa3 |
572 | |
573 | } |
574 | |
575 | //_____________________________________________________________________________ |
793ff80c |
576 | void AliTRDgeometry::GetGlobal(const AliRecPoint *p, TVector3 &pos |
577 | , TMatrix &mat) const |
f7336fa3 |
578 | { |
579 | // |
580 | // Returns the global coordinate and error matrix of a AliTRDrecPoint |
581 | // |
582 | |
583 | GetGlobal(p,pos); |
9d0b222b |
584 | mat.Zero(); |
f7336fa3 |
585 | |
586 | } |
587 | |
588 | //_____________________________________________________________________________ |
94de3818 |
589 | void AliTRDgeometry::GetGlobal(const AliRecPoint *p, TVector3 &pos) const |
f7336fa3 |
590 | { |
591 | // |
592 | // Returns the global coordinate and error matrix of a AliTRDrecPoint |
593 | // |
594 | |
595 | Int_t detector = ((AliTRDrecPoint *) p)->GetDetector(); |
596 | |
597 | Float_t global[3]; |
598 | Float_t local[3]; |
6f1e466d |
599 | local[0] = ((AliTRDrecPoint *) p)->GetLocalRow(); |
600 | local[1] = ((AliTRDrecPoint *) p)->GetLocalCol(); |
601 | local[2] = ((AliTRDrecPoint *) p)->GetLocalTime(); |
f7336fa3 |
602 | |
603 | if (Local2Global(detector,local,global)) { |
604 | pos.SetX(global[0]); |
605 | pos.SetY(global[1]); |
606 | pos.SetZ(global[2]); |
607 | } |
608 | else { |
609 | pos.SetX(0.0); |
610 | pos.SetY(0.0); |
611 | pos.SetZ(0.0); |
612 | } |
613 | |
614 | } |