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c7a4dac0 | 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 | $Log$ | |
0fee5d51 | 18 | Revision 1.13 2001/11/13 11:13:24 barbera |
19 | A protection against tracks with the same entrance and exit has been made more strict | |
20 | ||
0cadf298 | 21 | Revision 1.12 2001/10/04 22:44:31 nilsen |
22 | Major changes in supppor of PreDigits (SDigits). Changes made with will make | |
23 | it easier to suppor expected changes in AliITSHit class. Added use of new | |
24 | class AliITSpList. Both SPD and SDD have added effects of Dead Channels. Both | |
25 | of these will require addtional work as data bases of detectors and the like | |
26 | are developed. | |
27 | ||
c7a4dac0 | 28 | */ |
b0f5e3fc | 29 | #include <iostream.h> |
30 | #include <TRandom.h> | |
31 | #include <TH1.h> | |
e8189707 | 32 | #include <TMath.h> |
9f033001 | 33 | #include <TString.h> |
34 | #include <TParticle.h> | |
e8189707 | 35 | |
b0f5e3fc | 36 | #include "AliRun.h" |
e8189707 | 37 | #include "AliITS.h" |
9f033001 | 38 | #include "AliITShit.h" |
39 | #include "AliITSdigit.h" | |
40 | #include "AliITSmodule.h" | |
21b825a4 | 41 | #include "AliITSMapA2.h" |
c7a4dac0 | 42 | #include "AliITSpList.h" |
b0f5e3fc | 43 | #include "AliITSsimulationSPD.h" |
9f033001 | 44 | #include "AliITSsegmentation.h" |
45 | #include "AliITSresponse.h" | |
c7a4dac0 | 46 | #include "AliITSsegmentationSPD.h" |
47 | #include "AliITSresponseSPD.h" | |
9f033001 | 48 | |
e8189707 | 49 | |
b0f5e3fc | 50 | ClassImp(AliITSsimulationSPD) |
51 | //////////////////////////////////////////////////////////////////////// | |
52 | // Version: 0 | |
21b825a4 | 53 | // Written by Rocco Caliandro |
54 | // from a model developed with T. Virgili and R.A. Fini | |
55 | // June 15 2000 | |
b0f5e3fc | 56 | // |
57 | // AliITSsimulationSPD is the simulation of SPDs | |
21b825a4 | 58 | // |
c7a4dac0 | 59 | //______________________________________________________________________ |
21b825a4 | 60 | AliITSsimulationSPD::AliITSsimulationSPD(){ |
c7a4dac0 | 61 | // Default constructor |
62 | ||
63 | fResponse = 0; | |
64 | fSegmentation = 0; | |
65 | fHis = 0; | |
66 | fMapA2 = 0; | |
67 | /* | |
68 | fThresh = 0.; | |
69 | fSigma = 0.; | |
70 | fCouplCol = 0.; | |
71 | fCouplRow = 0.; */ | |
b0f5e3fc | 72 | } |
c7a4dac0 | 73 | //______________________________________________________________________ |
74 | AliITSsimulationSPD::AliITSsimulationSPD(AliITSsegmentation *seg, | |
75 | AliITSresponse *resp) { | |
76 | // Standard constructor | |
77 | ||
78 | fResponse = 0; | |
79 | fSegmentation = 0; | |
80 | fHis = 0; | |
81 | fMapA2 = 0; | |
82 | /* | |
83 | fThresh = 0.; | |
84 | fSigma = 0.; | |
85 | fCouplCol = 0.; | |
86 | fCouplRow = 0.*/ | |
87 | Init((AliITSsegmentationSPD*)seg,(AliITSresponseSPD*)resp); | |
b0f5e3fc | 88 | } |
c7a4dac0 | 89 | //______________________________________________________________________ |
90 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
91 | AliITSresponseSPD *resp) { | |
92 | // Initilizes the variables of AliITSsimulation SPD. | |
93 | ||
94 | fHis = 0; | |
95 | fResponse = resp; | |
96 | fSegmentation = seg; | |
97 | fMapA2 = new AliITSMapA2(fSegmentation); | |
98 | /* | |
99 | fResponse->Thresholds(fThresh,fSigma); | |
100 | fResponse->GetNoiseParam(fCouplCol,fCouplRow); | |
101 | fNPixelsZ = fSegmentation->Npz(); | |
102 | fNPixelsX = fSegmentation->Npx(); | |
103 | */ | |
104 | } | |
105 | //______________________________________________________________________ | |
b0f5e3fc | 106 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 107 | // destructor |
b0f5e3fc | 108 | |
c7a4dac0 | 109 | delete fMapA2; |
b0f5e3fc | 110 | |
c7a4dac0 | 111 | if (fHis) { |
112 | fHis->Delete(); | |
113 | delete fHis; | |
114 | } // end if | |
b0f5e3fc | 115 | } |
c7a4dac0 | 116 | //______________________________________________________________________ |
b0f5e3fc | 117 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source){ |
c7a4dac0 | 118 | // Copy Constructor |
119 | ||
120 | if(&source == this) return; | |
121 | ||
122 | this->fMapA2 = source.fMapA2; | |
123 | this->fHis = source.fHis; | |
124 | /* | |
125 | this->fThresh = source.fThresh; | |
126 | this->fSigma = source.fSigma; | |
127 | this->fCouplCol = source.fCouplCol; | |
128 | this->fCouplRow = source.fCouplRow; | |
129 | this->fNPixelsX = source.fNPixelsX; | |
130 | this->fNPixelsZ = source.fNPixelsZ; | |
131 | */ | |
132 | return; | |
b0f5e3fc | 133 | } |
c7a4dac0 | 134 | //______________________________________________________________________ |
135 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
136 | &source) { | |
137 | // Assignment operator | |
138 | ||
139 | if(&source == this) return *this; | |
140 | ||
141 | this->fMapA2 = source.fMapA2; | |
142 | this->fHis = source.fHis; | |
143 | /* | |
144 | this->fThresh = source.fThresh; | |
145 | this->fSigma = source.fSigma; | |
146 | this->fCouplCol = source.fCouplCol; | |
147 | this->fCouplRow = source.fCouplRow; | |
148 | this->fNPixelsX = source.fNPixelsX; | |
149 | this->fNPixelsZ = source.fNPixelsZ; | |
150 | */ | |
151 | return *this; | |
152 | } | |
153 | //______________________________________________________________________ | |
154 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
155 | Int_t dummy1) { | |
156 | // Sum digitize module | |
157 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. | |
158 | Int_t number = 10000; | |
159 | Int_t *frowpixel = new Int_t[number]; | |
160 | Int_t *fcolpixel = new Int_t[number]; | |
161 | Double_t *fenepixel = new Double_t[number]; | |
162 | ||
163 | // Array of pointers to store the track index of the digits | |
164 | // leave +1, otherwise pList crashes when col=256, row=192 | |
165 | AliITSpList *pList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
166 | ||
167 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,pList); | |
168 | ||
169 | WriteSDigits(pList); | |
170 | ||
171 | // clean memory | |
172 | delete[] frowpixel; | |
173 | delete[] fcolpixel; | |
174 | delete[] fenepixel; | |
175 | fMapA2->ClearMap(); | |
176 | delete pList; | |
177 | } | |
178 | //______________________________________________________________________ | |
179 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
180 | Int_t dummy1) { | |
181 | // digitize module. Also need to digitize modules with only noise. | |
b0f5e3fc | 182 | |
c7a4dac0 | 183 | Int_t number = 10000; |
184 | Int_t *frowpixel = new Int_t[number]; | |
185 | Int_t *fcolpixel = new Int_t[number]; | |
186 | Double_t *fenepixel = new Double_t[number]; | |
187 | Int_t module = mod->GetIndex(); | |
b0f5e3fc | 188 | |
c7a4dac0 | 189 | // Array of pointers to store the track index of the digits |
190 | // leave +1, otherwise pList crashes when col=256, row=192 | |
191 | AliITSpList *pList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
b0f5e3fc | 192 | |
c7a4dac0 | 193 | // noise setting |
194 | SetFluctuations(pList,module); | |
b0f5e3fc | 195 | |
c7a4dac0 | 196 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,pList); |
21b825a4 | 197 | |
c7a4dac0 | 198 | // apply mask to SPD module |
199 | SetMask(); | |
21b825a4 | 200 | |
c7a4dac0 | 201 | CreateDigit(module,pList); |
b0f5e3fc | 202 | |
c7a4dac0 | 203 | // clean memory |
204 | delete[] frowpixel; | |
205 | delete[] fcolpixel; | |
206 | delete[] fenepixel; | |
207 | fMapA2->ClearMap(); | |
208 | delete pList; | |
21b825a4 | 209 | } |
c7a4dac0 | 210 | //______________________________________________________________________ |
211 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
212 | // sum digits to Digits. | |
b0f5e3fc | 213 | |
c7a4dac0 | 214 | FillMapFrompList(pList); |
b0f5e3fc | 215 | |
c7a4dac0 | 216 | // noise setting |
217 | SetFluctuations(pList,module); | |
b0f5e3fc | 218 | |
c7a4dac0 | 219 | // apply mask to SPD module |
220 | SetMask(); | |
21b825a4 | 221 | |
c7a4dac0 | 222 | CreateDigit(module,pList); |
223 | } | |
224 | //______________________________________________________________________ | |
225 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
226 | Int_t hit,Int_t mod,Double_t ene, | |
227 | AliITSpList *pList) { | |
228 | // updates the Map of signal, adding the energy (ene) released by | |
229 | // the current track | |
230 | ||
231 | fMapA2->AddSignal(row,col,ene); | |
232 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
233 | } | |
234 | //______________________________________________________________________ | |
235 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
236 | Double_t ene,AliITSpList *pList) { | |
237 | // updates the Map of noise, adding the energy (ene) give my noise | |
21b825a4 | 238 | |
c7a4dac0 | 239 | fMapA2->AddSignal(row,col,ene); |
240 | pList->AddNoise(row,col,mod,ene); | |
241 | } | |
242 | //______________________________________________________________________ | |
243 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
244 | Int_t *frowpixel,Int_t *fcolpixel, | |
245 | Double_t *fenepixel, | |
246 | AliITSpList *pList) { | |
247 | // Loops over all hits to produce Analog/floting point digits. This | |
248 | // is also the first task in producing standard digits. | |
21b825a4 | 249 | |
c7a4dac0 | 250 | // loop over hits in the module |
251 | Int_t hitpos,nhits = mod->GetNhits(); | |
252 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
253 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); | |
254 | }// end loop over digits | |
255 | } | |
256 | //______________________________________________________________________ | |
257 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
258 | Int_t *frowpixel,Int_t *fcolpixel, | |
259 | Double_t *fenepixel,AliITSpList *pList) { | |
260 | // Steering function to determine the digits associated to a given | |
261 | // hit (hitpos) | |
262 | // The digits are created by charge sharing (ChargeSharing) and by | |
263 | // capacitive coupling (SetCoupling). At all the created digits is | |
264 | // associated the track number of the hit (ntrack) | |
265 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; | |
266 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
267 | Int_t ntrack; | |
268 | Double_t ene=0.0,etot=0.0; | |
269 | const Float_t kconv = 10000.; // cm -> microns | |
270 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
271 | ||
272 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
273 | ||
274 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
275 | // positions shifted and converted in microns | |
276 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
277 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
278 | // positions shifted and converted in microns | |
279 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
280 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
281 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
282 | Int_t module = mod->GetIndex(); | |
283 | ||
284 | // to account for the effective sensitive area | |
285 | // introduced in geometry | |
286 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
287 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
288 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
289 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
290 | ||
291 | //Get the col and row number starting from 1 | |
292 | // the x direction is not inverted for the second layer!!! | |
293 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
294 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
295 | ||
296 | // to account for unexpected equal entrance and | |
297 | // exit coordinates | |
0fee5d51 | 298 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
299 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 300 | |
301 | if ((r1==r2) && (c1==c2)){ | |
302 | // no charge sharing | |
303 | npixel = 1; | |
304 | frowpixel[npixel-1] = r1; | |
305 | fcolpixel[npixel-1] = c1; | |
306 | fenepixel[npixel-1] = etot; | |
307 | } else { | |
308 | // charge sharing | |
309 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
310 | npixel,frowpixel,fcolpixel,fenepixel); | |
311 | } // end if r1==r2 && c1==c2. | |
312 | ||
313 | for (Int_t npix=0;npix<npixel;npix++){ | |
314 | row = frowpixel[npix]; | |
315 | col = fcolpixel[npix]; | |
316 | ene = fenepixel[npix]; | |
317 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
318 | // Starting capacitive coupling effect | |
319 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
320 | } // end for npix | |
321 | } | |
322 | //______________________________________________________________________ | |
323 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
324 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
325 | Int_t r2,Float_t etot, | |
326 | Int_t &npixel,Int_t *frowpixel, | |
327 | Int_t *fcolpixel,Double_t *fenepixel){ | |
328 | // Take into account the geometrical charge sharing when the track | |
329 | // crosses more than one pixel. | |
330 | // | |
331 | //Begin_Html | |
21b825a4 | 332 | /* |
c7a4dac0 | 333 | <img src="picts/ITS/barimodel_2.gif"> |
334 | </pre> | |
335 | <br clear=left> | |
336 | <font size=+2 color=red> | |
337 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
338 | </font> | |
339 | <pre> | |
21b825a4 | 340 | */ |
c7a4dac0 | 341 | //End_Html |
342 | Float_t xa,za,xb,zb,dx,dz,dtot,dm,refr,refm,refc; | |
343 | Float_t refn=0.; | |
344 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
345 | Int_t dirx,dirz,rb,cb; | |
346 | Int_t flag,flagrow,flagcol; | |
347 | Double_t epar; | |
348 | ||
349 | npixel = 0; | |
350 | xa = x1l; | |
351 | za = z1l; | |
352 | dx = TMath::Abs(x1l-x2l); | |
0fee5d51 | 353 | if (dx == 0.) dx = 0.01; |
c7a4dac0 | 354 | dz = TMath::Abs(z1l-z2l); |
0fee5d51 | 355 | if (dz == 0.) dz = 0.01; |
c7a4dac0 | 356 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
357 | dm = (x2l - x1l) / (z2l - z1l); | |
0fee5d51 | 358 | if (dm == 0.) dm = 0.01; |
c7a4dac0 | 359 | dirx = (Int_t) ((x2l - x1l) / dx); |
360 | dirz = (Int_t) ((z2l - z1l) / dz); | |
361 | ||
362 | // calculate the x coordinate of the pixel in the next column | |
363 | // and the z coordinate of the pixel in the next row | |
364 | Float_t xpos, zpos; | |
365 | ||
366 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
367 | ||
368 | Float_t xsize = fSegmentation->Dpx(0); | |
369 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 370 | |
c7a4dac0 | 371 | if (dirx == 1) refr = xpos+xsize/2.; |
372 | else refr = xpos-xsize/2.; | |
373 | ||
374 | if (dirz == 1) refn = zpos+zsize/2.; | |
375 | else refn = zpos-zsize/2.; | |
376 | ||
377 | flag = 0; | |
378 | flagrow = 0; | |
379 | flagcol = 0; | |
380 | do{ | |
381 | // calculate the x coordinate of the intersection with the pixel | |
382 | // in the next cell in row direction | |
383 | refm = (refn - z1l)*dm + x1l; | |
e8189707 | 384 | |
c7a4dac0 | 385 | // calculate the z coordinate of the intersection with the pixel |
386 | // in the next cell in column direction | |
387 | refc = (refr - x1l)/dm + z1l; | |
388 | ||
389 | arefm = refm * dirx; | |
390 | arefr = refr * dirx; | |
391 | arefn = refn * dirz; | |
392 | arefc = refc * dirz; | |
393 | ||
394 | if ((arefm < arefr) && (arefn < arefc)){ | |
395 | // the track goes in the pixel in the next cell in row direction | |
396 | xb = refm; | |
397 | zb = refn; | |
398 | cb = c1; | |
399 | rb = r1 + dirz; | |
400 | azb = zb * dirz; | |
401 | az2l = z2l * dirz; | |
402 | if (rb == r2) flagrow=1; | |
403 | if (azb > az2l) { | |
21b825a4 | 404 | zb = z2l; |
405 | xb = x2l; | |
c7a4dac0 | 406 | } // end if |
407 | // shift to the pixel in the next cell in row direction | |
408 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
409 | //to account for cell at the borders of the detector | |
410 | if(zsizeNext==0) zsizeNext = zsize; | |
411 | refn += zsizeNext*dirz; | |
412 | }else { | |
413 | // the track goes in the pixel in the next cell in column direction | |
414 | xb = refr; | |
415 | zb = refc; | |
416 | cb = c1 + dirx; | |
417 | rb = r1; | |
418 | axb = xb * dirx; | |
419 | ax2l = x2l * dirx; | |
420 | if (cb == c2) flagcol=1; | |
421 | if (axb > ax2l) { | |
21b825a4 | 422 | zb = z2l; |
423 | xb = x2l; | |
c7a4dac0 | 424 | } // end ifaxb > ax2l |
425 | ||
426 | // shift to the pixel in the next cell in column direction | |
427 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
428 | //to account for cell at the borders of the detector | |
429 | if(xsizeNext==0) xsizeNext = xsize; | |
430 | refr += xsizeNext*dirx; | |
431 | } // end if (arefm < arefr) && (arefn < arefc) | |
432 | ||
433 | //calculate the energy lost in the crossed pixel | |
434 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
435 | epar = etot*(epar/dtot); | |
436 | ||
437 | //store row, column and energy lost in the crossed pixel | |
438 | frowpixel[npixel] = r1; | |
439 | fcolpixel[npixel] = c1; | |
440 | fenepixel[npixel] = epar; | |
441 | npixel++; | |
21b825a4 | 442 | |
c7a4dac0 | 443 | // the exit point of the track is reached |
444 | if (epar == 0) flag = 1; | |
445 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
446 | if (flag!=1) { | |
447 | r1 = rb; | |
448 | c1 = cb; | |
449 | xa = xb; | |
450 | za = zb; | |
451 | } // end if flag!=1 | |
452 | } while (flag==0); | |
21b825a4 | 453 | } |
c7a4dac0 | 454 | //______________________________________________________________________ |
21b825a4 | 455 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 456 | Int_t idhit,Int_t module, |
457 | AliITSpList *pList) { | |
458 | // Take into account the coupling between adiacent pixels. | |
459 | // The parameters probcol and probrow are the fractions of the | |
460 | // signal in one pixel shared in the two adjacent pixels along | |
461 | // the column and row direction, respectively. | |
462 | // | |
463 | //Begin_Html | |
464 | /* | |
465 | <img src="picts/ITS/barimodel_3.gif"> | |
466 | </pre> | |
467 | <br clear=left> | |
468 | <font size=+2 color=red> | |
469 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
470 | </font> | |
471 | <pre> | |
472 | */ | |
473 | //End_Html | |
474 | Int_t j1,j2,flag=0; | |
475 | Double_t pulse1,pulse2; | |
476 | Float_t couplR=0.0,couplC=0.0; | |
477 | ||
478 | GetCouplings(couplR,couplC); | |
479 | j1 = row; | |
480 | j2 = col; | |
481 | pulse1 = fMapA2->GetSignal(row,col); | |
482 | pulse2 = pulse1; | |
483 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
484 | do{ | |
485 | j1 += isign; | |
486 | pulse1 *= couplR; | |
487 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
488 | pulse1 = fMapA2->GetSignal(row,col); | |
489 | j1 = row; | |
490 | flag = 1; | |
491 | }else{ | |
492 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
493 | flag = 0; | |
494 | } // end if | |
495 | } while(flag == 0); | |
496 | // loop in column direction | |
497 | do{ | |
498 | j2 += isign; | |
499 | pulse2 *= couplC; | |
500 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
501 | pulse2 = fMapA2->GetSignal(row,col); | |
502 | j2 = col; | |
503 | flag = 1; | |
504 | }else{ | |
505 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
506 | flag = 0; | |
507 | } // end if | |
508 | } while(flag == 0); | |
509 | } // for isign | |
21b825a4 | 510 | } |
c7a4dac0 | 511 | //______________________________________________________________________ |
512 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
513 | // The pixels are fired if the energy deposited inside them is above | |
514 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
515 | // and stored in the file digitfilename. One also needs to write out | |
516 | // cases when there is only noise (nhits==0). | |
517 | ||
518 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
519 | ||
520 | Int_t digits[3]; | |
521 | Int_t tracks[3]; | |
522 | Int_t hits[3]; | |
523 | Float_t charges[3]; | |
524 | Int_t j1; | |
525 | ||
526 | for (Int_t r=1;r<=GetNPixelsZ();r++) { | |
527 | for (Int_t c=1;c<=GetNPixelsX();c++) { | |
528 | // check if the deposited energy in a pixel is above the | |
529 | // threshold | |
530 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
531 | if ( signal > GetThreshold()) { | |
532 | digits[0] = r-1; // digits starts from 0 | |
533 | digits[1] = c-1; // digits starts from 0 | |
534 | //digits[2] = 1; | |
535 | digits[2] = (Int_t) signal; // the signal is stored in | |
536 | // electrons | |
537 | for(j1=0;j1<3;j1++){ | |
538 | tracks[j1] = pList->GetTrack(r,c,j1); | |
539 | hits[j1] = pList->GetHit(r,c,j1); | |
21b825a4 | 540 | charges[j1] = 0; |
c7a4dac0 | 541 | } // end for j1 |
542 | Float_t phys = 0; | |
543 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); | |
544 | } // end if of threshold condition | |
545 | } // for c | |
546 | }// end do on pixels | |
21b825a4 | 547 | } |
c7a4dac0 | 548 | //______________________________________________________________________ |
549 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
550 | // Set the electronic noise and threshold non-uniformities to all the | |
551 | // pixels in a detector. | |
552 | // The parameter fSigma is the squared sum of the sigma due to noise | |
553 | // and the sigma of the threshold distribution among pixels. | |
554 | // | |
555 | //Begin_Html | |
556 | /* | |
557 | <img src="picts/ITS/barimodel_1.gif"> | |
558 | </pre> | |
559 | <br clear=left> | |
560 | <font size=+2 color=red> | |
561 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
562 | </font> | |
563 | <pre> | |
564 | */ | |
565 | //End_Html | |
566 | Float_t thr=0.0,sigm=0.0; | |
567 | Double_t signal,sigma; | |
568 | Int_t iz,ix; | |
569 | ||
570 | GetThresholds(thr,sigm); | |
571 | sigma = (Double_t) sigm; | |
572 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
573 | for(ix=1;ix<=GetNPixelsX();ix++){ | |
574 | signal = sigma*gRandom->Gaus(); | |
575 | fMapA2->SetHit(iz,ix,signal); | |
576 | // insert in the label-signal-hit list the pixels fired | |
577 | // only by noise | |
578 | pList->AddNoise(iz,ix,module,signal); | |
579 | } // end of loop on pixels | |
21b825a4 | 580 | } // end of loop on pixels |
c7a4dac0 | 581 | } |
582 | //______________________________________________________________________ | |
583 | void AliITSsimulationSPD::SetMask() { | |
584 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
585 | // masked. When the database will be ready, the masked pixels | |
586 | // should be read from it. | |
587 | Double_t signal; | |
588 | Int_t iz,ix,im; | |
589 | Float_t totMask; | |
590 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
591 | // in this way we get the same set of random numbers for all runs. | |
592 | // This is a cluge for now. | |
593 | static TRandom *rnd = new TRandom(); | |
594 | ||
595 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
596 | for(im=1;im<totMask;im++){ | |
597 | do{ | |
598 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
599 | } while(ix<=0 || ix>GetNPixelsX()); | |
600 | do{ | |
601 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
602 | } while(iz<=0 || iz>GetNPixelsZ()); | |
603 | signal = -1.; | |
604 | fMapA2->SetHit(iz,ix,signal); | |
605 | } // end loop on masked pixels | |
606 | } | |
607 | //______________________________________________________________________ | |
21b825a4 | 608 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 609 | // Create Histograms |
610 | Int_t i; | |
21b825a4 | 611 | |
c7a4dac0 | 612 | fHis=new TObjArray(GetNPixelsZ()); |
613 | for(i=0;i<GetNPixelsZ();i++) { | |
614 | TString spdname("spd_"); | |
615 | Char_t candnum[4]; | |
616 | sprintf(candnum,"%d",i+1); | |
617 | spdname.Append(candnum); | |
618 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
619 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
620 | } // end for i | |
b0f5e3fc | 621 | } |
c7a4dac0 | 622 | //______________________________________________________________________ |
21b825a4 | 623 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 624 | // Reset histograms for this detector |
21b825a4 | 625 | Int_t i; |
b0f5e3fc | 626 | |
c7a4dac0 | 627 | for(i=0;i<GetNPixelsZ();i++ ) { |
628 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); | |
629 | } // end for i | |
630 | } | |
631 | //______________________________________________________________________ | |
632 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
633 | // Fills the Summable digits Tree | |
634 | Int_t i,ni,j,nj; | |
635 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
636 | ||
637 | pList->GetMaxMapIndex(ni,nj); | |
638 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
639 | if(pList->GetSignalOnly(i,j)>0.0){ | |
640 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
641 | // cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; | |
642 | } // end if | |
643 | } // end for i,j | |
644 | return; | |
645 | } | |
646 | //______________________________________________________________________ | |
647 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
648 | // Fills fMap2A from the pList of Summable digits | |
649 | Int_t k,ix; | |
650 | ||
651 | for(k=0;k<GetNPixelsZ();k++)for(ix=0;ix<GetNPixelsX();ix++) | |
652 | fMapA2->AddSignal(k,ix,pList->GetSignal(k,ix)); | |
653 | return; | |
b0f5e3fc | 654 | } |