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4c503756 | 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 | ||
88cb7938 | 16 | /* $Id$ */ |
4c503756 | 17 | |
18 | ///////////////////////////////////////////////////// | |
19 | // Segmentation classes for slat modules // | |
20 | // to be used with AluMUONSegmentationSlat // | |
21 | ///////////////////////////////////////////////////// | |
22 | ||
23 | ||
24 | #include "AliMUONSegmentationSlatModule.h" | |
aaf4addd | 25 | #include "AliRun.h" |
26 | #include "AliMUON.h" | |
4c503756 | 27 | #include <TMath.h> |
70479d0e | 28 | #include <Riostream.h> |
4c503756 | 29 | |
30 | #include "AliMUONSegmentationV01.h" | |
31 | ||
32 | //___________________________________________ | |
33 | ClassImp(AliMUONSegmentationSlatModule) | |
34 | ||
35 | AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule() | |
36 | { | |
37 | // Default constructor | |
81a0c7bd | 38 | fNDiv = 0; |
39 | fDpxD = 0; | |
e9e4cdf2 | 40 | } |
41 | ||
42 | AliMUONSegmentationSlatModule::AliMUONSegmentationSlatModule(Int_t nsec) | |
43 | { | |
44 | // Non default constructor | |
45 | fNsec = nsec; | |
4c503756 | 46 | fNDiv = new TArrayI(fNsec); |
47 | fDpxD = new TArrayF(fNsec); | |
48 | (*fNDiv)[0]=(*fNDiv)[1]=(*fNDiv)[2]=(*fNDiv)[3]=0; | |
49 | (*fDpxD)[0]=(*fDpxD)[1]=(*fDpxD)[2]=(*fDpxD)[3]=0; | |
e9e4cdf2 | 50 | } |
51 | ||
52 | AliMUONSegmentationSlatModule::~AliMUONSegmentationSlatModule() | |
53 | { | |
54 | // Destructor | |
55 | if (fNDiv) delete fNDiv; | |
56 | if (fDpxD) delete fDpxD; | |
4c503756 | 57 | } |
58 | ||
59 | void AliMUONSegmentationSlatModule::SetPcbBoards(Int_t n[4]) | |
60 | { | |
61 | // | |
62 | // Set Pcb Board segmentation zones | |
63 | for (Int_t i=0; i<4; i++) fPcbBoards[i]=n[i]; | |
64 | } | |
65 | ||
66 | ||
67 | void AliMUONSegmentationSlatModule::SetPadDivision(Int_t ndiv[4]) | |
68 | { | |
69 | // | |
70 | // Defines the pad size perp. to the anode wire (y) for different sectors. | |
71 | // Pad sizes are defined as integral fractions ndiv of a basis pad size | |
72 | // fDpx | |
73 | // | |
74 | for (Int_t i=0; i<4; i++) { | |
75 | (*fNDiv)[i]=ndiv[i]; | |
76 | } | |
77 | ndiv[0]=ndiv[1]; | |
78 | } | |
79 | ||
80 | Float_t AliMUONSegmentationSlatModule::Dpx(Int_t isec) const | |
81 | { | |
82 | // Return x-strip width | |
83 | return (*fDpxD)[isec]; | |
84 | } | |
85 | ||
86 | ||
87 | Float_t AliMUONSegmentationSlatModule::Dpy(Int_t isec) const | |
88 | { | |
89 | // Return y-strip width | |
90 | ||
91 | return fDpy; | |
92 | } | |
93 | ||
94 | ||
95 | void AliMUONSegmentationSlatModule:: | |
96 | GetPadI(Float_t x, Float_t y, Int_t &ix, Int_t &iy) | |
97 | { | |
98 | // Returns pad coordinates (ix,iy) for given real coordinates (x,y) | |
99 | // | |
100 | iy = Int_t(y/fDpy)+1; | |
101 | if (iy > fNpy) iy= fNpy; | |
102 | // | |
103 | // Find sector isec | |
104 | ||
105 | Int_t isec=-1; | |
106 | for (Int_t i=fNsec-1; i > 0; i--) { | |
107 | if (x >= fCx[i-1]) { | |
108 | isec=i; | |
f30dea32 | 109 | if (fCx[isec] == fCx[isec-1] && isec > 1) isec--; |
4c503756 | 110 | break; |
111 | } | |
112 | } | |
113 | ||
114 | if (isec>0) { | |
115 | ix= Int_t((x-fCx[isec-1])/(*fDpxD)[isec]) | |
116 | +fNpxS[isec-1]+1; | |
117 | } else if (isec == 0) { | |
118 | ix= Int_t(x/(*fDpxD)[isec])+1; | |
119 | } else { | |
120 | ix=0; | |
121 | iy=0; | |
122 | } | |
123 | } | |
124 | ||
125 | void AliMUONSegmentationSlatModule:: | |
126 | GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) | |
127 | { | |
128 | // Returns real coordinates (x,y) for given pad coordinates (ix,iy) | |
129 | // | |
130 | y = Float_t(iy*fDpy)-fDpy/2.; | |
131 | // | |
132 | // Find sector isec | |
133 | Int_t isec=AliMUONSegmentationSlatModule::Sector(ix,iy); | |
de2f6d11 | 134 | if (isec == -1) printf("\n PadC %d %d %d %d \n ", isec, fId, ix, iy); |
4c503756 | 135 | // |
136 | if (isec>0) { | |
137 | x = fCx[isec-1]+(ix-fNpxS[isec-1])*(*fDpxD)[isec]; | |
138 | x = x-(*fDpxD)[isec]/2; | |
139 | } else { | |
140 | x=y=0; | |
141 | } | |
142 | } | |
143 | ||
144 | void AliMUONSegmentationSlatModule:: | |
145 | SetPad(Int_t ix, Int_t iy) | |
146 | { | |
147 | // | |
148 | // Sets virtual pad coordinates, needed for evaluating pad response | |
149 | // outside the tracking program | |
150 | GetPadC(ix,iy,fX,fY); | |
151 | fSector=Sector(ix,iy); | |
152 | } | |
153 | ||
154 | void AliMUONSegmentationSlatModule:: | |
155 | SetHit(Float_t x, Float_t y) | |
156 | { | |
de05461e | 157 | // Set current hit |
158 | // | |
4c503756 | 159 | fXhit = x; |
160 | fYhit = y; | |
161 | ||
162 | if (x < 0) fXhit = 0; | |
163 | if (y < 0) fYhit = 0; | |
164 | ||
165 | if (x >= fCx[fNsec-1]) fXhit = fCx[fNsec-1]; | |
166 | if (y >= fDyPCB) fYhit = fDyPCB; | |
167 | ||
168 | ||
169 | } | |
170 | ||
171 | ||
172 | void AliMUONSegmentationSlatModule:: | |
173 | FirstPad(Float_t xhit, Float_t yhit, Float_t dx, Float_t dy) | |
174 | { | |
175 | // Initialises iteration over pads for charge distribution algorithm | |
176 | // | |
177 | // | |
178 | // Find the wire position (center of charge distribution) | |
179 | Float_t x0a=GetAnod(xhit); | |
180 | fXhit=x0a; | |
181 | fYhit=yhit; | |
182 | // | |
183 | // and take fNsigma*sigma around this center | |
184 | Float_t x01=x0a - dx; | |
185 | Float_t x02=x0a + dx; | |
186 | Float_t y01=yhit - dy; | |
187 | Float_t y02=yhit + dy; | |
4c503756 | 188 | if (x01 < 0) x01 = 0; |
189 | if (y01 < 0) y01 = 0; | |
f30dea32 | 190 | |
191 | if (x02 >= fCx[fNsec-1]) x02 = fCx[fNsec-1]; | |
d4ee3c3e | 192 | |
4c503756 | 193 | |
f30dea32 | 194 | |
4c503756 | 195 | Int_t isec=-1; |
196 | for (Int_t i=fNsec-1; i > 0; i--) { | |
197 | if (x02 >= fCx[i-1]) { | |
198 | isec=i; | |
f30dea32 | 199 | if (fCx[isec] == fCx[isec-1] && isec > 1) isec--; |
4c503756 | 200 | break; |
201 | } | |
202 | } | |
d4ee3c3e | 203 | y02 += Dpy(isec); |
204 | if (y02 >= fDyPCB) y02 = fDyPCB; | |
4c503756 | 205 | |
4c503756 | 206 | // |
207 | // find the pads over which the charge distributes | |
208 | GetPadI(x01,y01,fIxmin,fIymin); | |
209 | GetPadI(x02,y02,fIxmax,fIymax); | |
f30dea32 | 210 | |
4c503756 | 211 | if (fIxmax > fNpx) fIxmax=fNpx; |
212 | if (fIymax > fNpyS[isec]) fIymax = fNpyS[isec]; | |
d4ee3c3e | 213 | |
4c503756 | 214 | fXmin=x01; |
d4ee3c3e | 215 | fXmax=x02; |
4c503756 | 216 | fYmin=y01; |
d4ee3c3e | 217 | fYmax=y02; |
218 | ||
4c503756 | 219 | // |
220 | // Set current pad to lower left corner | |
221 | if (fIxmax < fIxmin) fIxmax=fIxmin; | |
222 | if (fIymax < fIymin) fIymax=fIymin; | |
223 | fIx=fIxmin; | |
224 | fIy=fIymin; | |
225 | ||
226 | GetPadC(fIx,fIy,fX,fY); | |
227 | fSector=Sector(fIx,fIy); | |
d4ee3c3e | 228 | /* |
229 | printf("\n \n First Pad: %d %d %f %f %d %d %d %f" , | |
230 | fIxmin, fIxmax, fXmin, fXmax, fNpx, fId, isec, Dpy(isec)); | |
231 | printf("\n \n First Pad: %d %d %f %f %d %d %d %f", | |
232 | fIymin, fIymax, fYmin, fYmax, fNpyS[isec], fId, isec, Dpy(isec)); | |
233 | */ | |
4c503756 | 234 | } |
235 | ||
236 | void AliMUONSegmentationSlatModule::NextPad() | |
237 | { | |
238 | // Stepper for the iteration over pads | |
239 | // | |
240 | // Step to next pad in the integration region | |
241 | // step from left to right | |
242 | if (fIx != fIxmax) { | |
243 | fIx++; | |
244 | GetPadC(fIx,fIy,fX,fY); | |
245 | fSector=Sector(fIx,fIy); | |
246 | // step up | |
247 | } else if (fIy != fIymax) { | |
248 | fIx=fIxmin; | |
249 | fIy++; | |
250 | GetPadC(fIx,fIy,fX,fY); | |
251 | fSector=Sector(fIx,fIy); | |
252 | ||
253 | } else { | |
254 | fIx=-1; | |
255 | fIy=-1; | |
256 | } | |
257 | // printf("\n Next Pad %d %d %f %f %d %d %d %d %d ", | |
258 | } | |
259 | ||
260 | ||
261 | Int_t AliMUONSegmentationSlatModule::MorePads() | |
de05461e | 262 | { |
4c503756 | 263 | // Stopping condition for the iterator over pads |
264 | // | |
265 | // Are there more pads in the integration region | |
4c503756 | 266 | |
267 | return (fIx != -1 || fIy != -1); | |
268 | } | |
269 | ||
270 | ||
271 | Int_t AliMUONSegmentationSlatModule::Sector(Int_t ix, Int_t iy) | |
272 | { | |
273 | // | |
274 | // Determine segmentation zone from pad coordinates | |
275 | // | |
276 | Int_t isec=-1; | |
277 | for (Int_t i=0; i < fNsec; i++) { | |
278 | if (ix <= fNpxS[i]) { | |
279 | isec=i; | |
280 | break; | |
281 | } | |
282 | } | |
283 | if (isec == -1) printf("\n Sector: Attention isec ! %d %d %d %d \n", | |
284 | fId, ix, iy,fNpxS[3]); | |
285 | ||
286 | return isec; | |
287 | ||
288 | } | |
289 | ||
290 | void AliMUONSegmentationSlatModule:: | |
291 | IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2) | |
292 | { | |
293 | // Returns integration limits for current pad | |
294 | // | |
295 | ||
296 | x1=fXhit-fX-Dpx(fSector)/2.; | |
297 | x2=x1+Dpx(fSector); | |
298 | y1=fYhit-fY-Dpy(fSector)/2.; | |
299 | y2=y1+Dpy(fSector); | |
300 | // printf("\n Integration Limits %f %f %f %f %d %f", x1, x2, y1, y2, fSector, Dpx(fSector)); | |
301 | ||
302 | } | |
303 | ||
304 | void AliMUONSegmentationSlatModule:: | |
305 | Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]) | |
306 | { | |
307 | // Returns list of next neighbours for given Pad (iX, iY) | |
308 | // | |
309 | // | |
310 | Int_t i=0; | |
311 | // | |
312 | // step right | |
313 | if (iX+1 <= fNpx) { | |
314 | Xlist[i]=iX+1; | |
315 | Ylist[i++]=iY; | |
316 | } | |
317 | // | |
318 | // step left | |
319 | if (iX-1 > 0) { | |
320 | Xlist[i]=iX-1; | |
321 | Ylist[i++]=iY; | |
322 | } | |
323 | ||
324 | // | |
325 | // step up | |
326 | if (iY+1 <= fNpy) { | |
327 | Xlist[i]=iX; | |
328 | Ylist[i++]=iY+1; | |
329 | } | |
330 | // | |
331 | // step down | |
332 | if (iY-1 > 0) { | |
333 | Xlist[i]=iX; | |
334 | Ylist[i++]=iY-1; | |
335 | } | |
336 | ||
337 | *Nlist=i; | |
338 | } | |
339 | ||
340 | ||
341 | void AliMUONSegmentationSlatModule::Init(Int_t chamber) | |
342 | { | |
4c503756 | 343 | // |
344 | // Fill the arrays fCx (x-contour) and fNpxS (ix-contour) for each sector | |
345 | // These arrays help in converting from real to pad co-ordinates and | |
346 | // vice versa | |
347 | // | |
348 | // Segmentation is defined by rectangular modules approximating | |
349 | // concentric circles as shown below | |
350 | // | |
351 | // PCB module size in cm | |
9e1a0ddb | 352 | // printf("\n Initialise Segmentation SlatModule \n"); |
de05461e | 353 | |
4c503756 | 354 | fDxPCB=40; |
355 | fDyPCB=40; | |
356 | // | |
357 | // number of pad rows per PCB | |
358 | // | |
359 | Int_t nPyPCB=Int_t(fDyPCB/fDpy); | |
360 | // | |
361 | // maximum number of pad rows | |
362 | fNpy=nPyPCB; | |
363 | // | |
364 | // Calculate padsize along x | |
365 | (*fDpxD)[fNsec-1]=fDpx; | |
366 | if (fNsec > 1) { | |
367 | for (Int_t i=fNsec-2; i>=0; i--){ | |
368 | (*fDpxD)[i]=(*fDpxD)[fNsec-1]/(*fNDiv)[i]; | |
4c503756 | 369 | } |
370 | } | |
371 | // | |
372 | // fill the arrays defining the pad segmentation boundaries | |
373 | // | |
374 | // | |
375 | // Loop over sectors (isec=0 is the dead space surounding the beam pipe) | |
376 | for (Int_t isec=0; isec<4; isec++) { | |
377 | if (isec==0) { | |
378 | fNpxS[0] = 0; | |
379 | fNpyS[0] = 0; | |
380 | fCx[0] = 0; | |
381 | } else { | |
382 | fNpxS[isec]=fNpxS[isec-1] + fPcbBoards[isec]*Int_t(fDxPCB/(*fDpxD)[isec]); | |
383 | fNpyS[isec]=fNpy; | |
384 | fCx[isec]=fCx[isec-1] + fPcbBoards[isec]*fDxPCB; | |
385 | } | |
386 | } // sectors | |
387 | // maximum number of pad rows | |
388 | fNpy=nPyPCB; | |
389 | fNpx=fNpxS[3]; | |
de2f6d11 | 390 | // |
391 | fId = chamber; | |
4c503756 | 392 | } |
393 | ||
394 | ||
395 | ||
396 | ||
397 | ||
398 | ||
399 | ||
400 | ||
401 | ||
402 | ||
403 | ||
404 |