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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 | ||
88cb7938 | 16 | /* $Id$ */ |
f8d9a5b8 | 17 | |
4ae5bbc4 | 18 | #include <Riostream.h> |
b0f5e3fc | 19 | #include <TRandom.h> |
20 | #include <TH1.h> | |
e8189707 | 21 | #include <TMath.h> |
9f033001 | 22 | #include <TString.h> |
23 | #include <TParticle.h> | |
e8189707 | 24 | |
b0f5e3fc | 25 | #include "AliRun.h" |
e8189707 | 26 | #include "AliITS.h" |
9f033001 | 27 | #include "AliITShit.h" |
28 | #include "AliITSdigit.h" | |
29 | #include "AliITSmodule.h" | |
21b825a4 | 30 | #include "AliITSMapA2.h" |
c7a4dac0 | 31 | #include "AliITSpList.h" |
b0f5e3fc | 32 | #include "AliITSsimulationSPD.h" |
9f033001 | 33 | #include "AliITSsegmentation.h" |
34 | #include "AliITSresponse.h" | |
c7a4dac0 | 35 | #include "AliITSsegmentationSPD.h" |
36 | #include "AliITSresponseSPD.h" | |
9f033001 | 37 | |
bb6b39bf | 38 | //#define DEBUG |
e8189707 | 39 | |
b0f5e3fc | 40 | ClassImp(AliITSsimulationSPD) |
41 | //////////////////////////////////////////////////////////////////////// | |
42 | // Version: 0 | |
21b825a4 | 43 | // Written by Rocco Caliandro |
44 | // from a model developed with T. Virgili and R.A. Fini | |
45 | // June 15 2000 | |
b0f5e3fc | 46 | // |
47 | // AliITSsimulationSPD is the simulation of SPDs | |
21b825a4 | 48 | // |
c7a4dac0 | 49 | //______________________________________________________________________ |
21b825a4 | 50 | AliITSsimulationSPD::AliITSsimulationSPD(){ |
c7a4dac0 | 51 | // Default constructor |
52 | ||
53 | fResponse = 0; | |
54 | fSegmentation = 0; | |
55 | fHis = 0; | |
56 | fMapA2 = 0; | |
3a97c582 | 57 | |
c7a4dac0 | 58 | /* |
59 | fThresh = 0.; | |
60 | fSigma = 0.; | |
61 | fCouplCol = 0.; | |
62 | fCouplRow = 0.; */ | |
b0f5e3fc | 63 | } |
c7a4dac0 | 64 | //______________________________________________________________________ |
65 | AliITSsimulationSPD::AliITSsimulationSPD(AliITSsegmentation *seg, | |
66 | AliITSresponse *resp) { | |
67 | // Standard constructor | |
68 | ||
69 | fResponse = 0; | |
70 | fSegmentation = 0; | |
71 | fHis = 0; | |
72 | fMapA2 = 0; | |
3a97c582 | 73 | |
c7a4dac0 | 74 | /* |
75 | fThresh = 0.; | |
76 | fSigma = 0.; | |
77 | fCouplCol = 0.; | |
78 | fCouplRow = 0.*/ | |
79 | Init((AliITSsegmentationSPD*)seg,(AliITSresponseSPD*)resp); | |
b0f5e3fc | 80 | } |
c7a4dac0 | 81 | //______________________________________________________________________ |
82 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
83 | AliITSresponseSPD *resp) { | |
84 | // Initilizes the variables of AliITSsimulation SPD. | |
85 | ||
86 | fHis = 0; | |
87 | fResponse = resp; | |
88 | fSegmentation = seg; | |
3a97c582 | 89 | fMapA2 = new AliITSMapA2(fSegmentation); |
90 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
c7a4dac0 | 91 | /* |
92 | fResponse->Thresholds(fThresh,fSigma); | |
93 | fResponse->GetNoiseParam(fCouplCol,fCouplRow); | |
94 | fNPixelsZ = fSegmentation->Npz(); | |
95 | fNPixelsX = fSegmentation->Npx(); | |
96 | */ | |
97 | } | |
98 | //______________________________________________________________________ | |
b0f5e3fc | 99 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 100 | // destructor |
b0f5e3fc | 101 | |
c7a4dac0 | 102 | delete fMapA2; |
3a97c582 | 103 | // delete fpList; |
b0f5e3fc | 104 | |
c7a4dac0 | 105 | if (fHis) { |
106 | fHis->Delete(); | |
107 | delete fHis; | |
108 | } // end if | |
b0f5e3fc | 109 | } |
c7a4dac0 | 110 | //______________________________________________________________________ |
ac74f489 | 111 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source) : |
112 | AliITSsimulation(source){ | |
c7a4dac0 | 113 | // Copy Constructor |
114 | ||
115 | if(&source == this) return; | |
116 | ||
117 | this->fMapA2 = source.fMapA2; | |
118 | this->fHis = source.fHis; | |
119 | /* | |
120 | this->fThresh = source.fThresh; | |
121 | this->fSigma = source.fSigma; | |
122 | this->fCouplCol = source.fCouplCol; | |
123 | this->fCouplRow = source.fCouplRow; | |
124 | this->fNPixelsX = source.fNPixelsX; | |
125 | this->fNPixelsZ = source.fNPixelsZ; | |
126 | */ | |
127 | return; | |
b0f5e3fc | 128 | } |
c7a4dac0 | 129 | //______________________________________________________________________ |
130 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
131 | &source) { | |
132 | // Assignment operator | |
133 | ||
134 | if(&source == this) return *this; | |
135 | ||
136 | this->fMapA2 = source.fMapA2; | |
137 | this->fHis = source.fHis; | |
138 | /* | |
139 | this->fThresh = source.fThresh; | |
140 | this->fSigma = source.fSigma; | |
141 | this->fCouplCol = source.fCouplCol; | |
142 | this->fCouplRow = source.fCouplRow; | |
143 | this->fNPixelsX = source.fNPixelsX; | |
144 | this->fNPixelsZ = source.fNPixelsZ; | |
145 | */ | |
146 | return *this; | |
3a97c582 | 147 | } |
148 | //______________________________________________________________________ | |
149 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
150 | // Creates maps to build the list of tracks for each sumable digit | |
151 | // Inputs: | |
152 | // Int_t module // Module number to be simulated | |
153 | // Int_t event // Event number to be simulated | |
154 | // Outputs: | |
155 | // none. | |
156 | // Return | |
157 | // none. | |
158 | ||
159 | fModule = module; | |
160 | fEvent = event; | |
161 | fMapA2->ClearMap(); | |
162 | fpList->ClearMap(); | |
163 | } | |
164 | //______________________________________________________________________ | |
165 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
166 | // Does the Sdigits to Digits work | |
167 | // Inputs: | |
168 | // none. | |
169 | // Outputs: | |
170 | // none. | |
171 | // Return: | |
172 | // none. | |
173 | ||
174 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 175 | } |
176 | //______________________________________________________________________ | |
177 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
178 | Int_t dummy1) { | |
179 | // Sum digitize module | |
180 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. | |
181 | Int_t number = 10000; | |
182 | Int_t *frowpixel = new Int_t[number]; | |
183 | Int_t *fcolpixel = new Int_t[number]; | |
184 | Double_t *fenepixel = new Double_t[number]; | |
185 | ||
ac74f489 | 186 | dummy0 = dummy1; // remove unsued variable warning. |
3a97c582 | 187 | fModule = mod->GetIndex(); |
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 | |
c7a4dac0 | 191 | |
3a97c582 | 192 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 193 | |
3a97c582 | 194 | WriteSDigits(fpList); |
c7a4dac0 | 195 | |
196 | // clean memory | |
197 | delete[] frowpixel; | |
198 | delete[] fcolpixel; | |
199 | delete[] fenepixel; | |
200 | fMapA2->ClearMap(); | |
3a97c582 | 201 | fpList->ClearMap(); |
c7a4dac0 | 202 | } |
203 | //______________________________________________________________________ | |
204 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
205 | Int_t dummy1) { | |
206 | // digitize module. Also need to digitize modules with only noise. | |
b0f5e3fc | 207 | |
c7a4dac0 | 208 | Int_t number = 10000; |
209 | Int_t *frowpixel = new Int_t[number]; | |
210 | Int_t *fcolpixel = new Int_t[number]; | |
211 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 212 | |
ac74f489 | 213 | dummy0 = dummy1; // remove unsued variable warning. |
c7a4dac0 | 214 | // Array of pointers to store the track index of the digits |
3a97c582 | 215 | // leave +1, otherwise pList crashes when col=256, row=192 |
216 | fModule = mod->GetIndex(); | |
c7a4dac0 | 217 | // noise setting |
3a97c582 | 218 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 219 | |
3a97c582 | 220 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 221 | |
c7a4dac0 | 222 | // apply mask to SPD module |
223 | SetMask(); | |
21b825a4 | 224 | |
3a97c582 | 225 | CreateDigit(fModule,fpList); |
b0f5e3fc | 226 | |
c7a4dac0 | 227 | // clean memory |
228 | delete[] frowpixel; | |
229 | delete[] fcolpixel; | |
230 | delete[] fenepixel; | |
231 | fMapA2->ClearMap(); | |
3a97c582 | 232 | fpList->ClearMap(); |
21b825a4 | 233 | } |
c7a4dac0 | 234 | //______________________________________________________________________ |
235 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
236 | // sum digits to Digits. | |
bb6b39bf | 237 | |
238 | #ifdef DEBUG | |
239 | cout << "Entering AliITSsimulatinSPD::SDigitsToDigits for module="; | |
240 | cout << module << endl; | |
241 | #endif | |
3a97c582 | 242 | fModule = module; |
b0f5e3fc | 243 | |
c7a4dac0 | 244 | // noise setting |
245 | SetFluctuations(pList,module); | |
b0f5e3fc | 246 | |
3a97c582 | 247 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
248 | // noise is not doubled when calling FillMapFrompList. | |
249 | ||
250 | FillMapFrompList(pList); | |
251 | ||
c7a4dac0 | 252 | // apply mask to SPD module |
253 | SetMask(); | |
21b825a4 | 254 | |
c7a4dac0 | 255 | CreateDigit(module,pList); |
3a97c582 | 256 | |
257 | fMapA2->ClearMap(); | |
258 | pList->ClearMap(); | |
c7a4dac0 | 259 | } |
260 | //______________________________________________________________________ | |
261 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
262 | Int_t hit,Int_t mod,Double_t ene, | |
263 | AliITSpList *pList) { | |
264 | // updates the Map of signal, adding the energy (ene) released by | |
265 | // the current track | |
266 | ||
267 | fMapA2->AddSignal(row,col,ene); | |
268 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
269 | } | |
270 | //______________________________________________________________________ | |
271 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
272 | Double_t ene,AliITSpList *pList) { | |
273 | // updates the Map of noise, adding the energy (ene) give my noise | |
21b825a4 | 274 | |
c7a4dac0 | 275 | fMapA2->AddSignal(row,col,ene); |
276 | pList->AddNoise(row,col,mod,ene); | |
277 | } | |
278 | //______________________________________________________________________ | |
279 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
280 | Int_t *frowpixel,Int_t *fcolpixel, | |
281 | Double_t *fenepixel, | |
282 | AliITSpList *pList) { | |
283 | // Loops over all hits to produce Analog/floting point digits. This | |
284 | // is also the first task in producing standard digits. | |
21b825a4 | 285 | |
c7a4dac0 | 286 | // loop over hits in the module |
287 | Int_t hitpos,nhits = mod->GetNhits(); | |
288 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
289 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); | |
290 | }// end loop over digits | |
291 | } | |
292 | //______________________________________________________________________ | |
293 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
294 | Int_t *frowpixel,Int_t *fcolpixel, | |
295 | Double_t *fenepixel,AliITSpList *pList) { | |
296 | // Steering function to determine the digits associated to a given | |
297 | // hit (hitpos) | |
298 | // The digits are created by charge sharing (ChargeSharing) and by | |
299 | // capacitive coupling (SetCoupling). At all the created digits is | |
300 | // associated the track number of the hit (ntrack) | |
301 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; | |
302 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
303 | Int_t ntrack; | |
304 | Double_t ene=0.0,etot=0.0; | |
305 | const Float_t kconv = 10000.; // cm -> microns | |
306 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
307 | ||
308 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
309 | ||
310 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
311 | // positions shifted and converted in microns | |
312 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
313 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
314 | // positions shifted and converted in microns | |
315 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
316 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
317 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
318 | Int_t module = mod->GetIndex(); | |
319 | ||
320 | // to account for the effective sensitive area | |
321 | // introduced in geometry | |
322 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
323 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
324 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
325 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
326 | ||
327 | //Get the col and row number starting from 1 | |
328 | // the x direction is not inverted for the second layer!!! | |
329 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
330 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
331 | ||
332 | // to account for unexpected equal entrance and | |
333 | // exit coordinates | |
0fee5d51 | 334 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
335 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 336 | |
337 | if ((r1==r2) && (c1==c2)){ | |
338 | // no charge sharing | |
339 | npixel = 1; | |
340 | frowpixel[npixel-1] = r1; | |
341 | fcolpixel[npixel-1] = c1; | |
342 | fenepixel[npixel-1] = etot; | |
343 | } else { | |
344 | // charge sharing | |
345 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
346 | npixel,frowpixel,fcolpixel,fenepixel); | |
347 | } // end if r1==r2 && c1==c2. | |
348 | ||
349 | for (Int_t npix=0;npix<npixel;npix++){ | |
350 | row = frowpixel[npix]; | |
351 | col = fcolpixel[npix]; | |
352 | ene = fenepixel[npix]; | |
353 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
354 | // Starting capacitive coupling effect | |
355 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
356 | } // end for npix | |
357 | } | |
358 | //______________________________________________________________________ | |
359 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
360 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
361 | Int_t r2,Float_t etot, | |
362 | Int_t &npixel,Int_t *frowpixel, | |
363 | Int_t *fcolpixel,Double_t *fenepixel){ | |
364 | // Take into account the geometrical charge sharing when the track | |
365 | // crosses more than one pixel. | |
366 | // | |
367 | //Begin_Html | |
21b825a4 | 368 | /* |
c7a4dac0 | 369 | <img src="picts/ITS/barimodel_2.gif"> |
370 | </pre> | |
371 | <br clear=left> | |
372 | <font size=+2 color=red> | |
373 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
374 | </font> | |
375 | <pre> | |
21b825a4 | 376 | */ |
c7a4dac0 | 377 | //End_Html |
ee86d557 | 378 | //Float_t dm; |
379 | Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc; | |
c7a4dac0 | 380 | Float_t refn=0.; |
381 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
382 | Int_t dirx,dirz,rb,cb; | |
383 | Int_t flag,flagrow,flagcol; | |
384 | Double_t epar; | |
385 | ||
386 | npixel = 0; | |
387 | xa = x1l; | |
388 | za = z1l; | |
cf6105a4 | 389 | // dx = x1l-x2l; |
390 | // dz = z1l-z2l; | |
391 | dx = x2l-x1l; | |
392 | dz = z2l-z1l; | |
c7a4dac0 | 393 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 394 | if (dtot==0.0) dtot = 0.01; |
395 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
396 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 397 | |
398 | // calculate the x coordinate of the pixel in the next column | |
399 | // and the z coordinate of the pixel in the next row | |
400 | Float_t xpos, zpos; | |
401 | ||
402 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
403 | ||
404 | Float_t xsize = fSegmentation->Dpx(0); | |
405 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 406 | |
c7a4dac0 | 407 | if (dirx == 1) refr = xpos+xsize/2.; |
408 | else refr = xpos-xsize/2.; | |
409 | ||
410 | if (dirz == 1) refn = zpos+zsize/2.; | |
411 | else refn = zpos-zsize/2.; | |
412 | ||
413 | flag = 0; | |
414 | flagrow = 0; | |
415 | flagcol = 0; | |
416 | do{ | |
417 | // calculate the x coordinate of the intersection with the pixel | |
418 | // in the next cell in row direction | |
d709f420 | 419 | if(dz!=0) |
420 | refm = dx*((refn - z1l)/dz) + x1l; | |
421 | else | |
422 | refm = refr+dirx*xsize; | |
e8189707 | 423 | |
c7a4dac0 | 424 | // calculate the z coordinate of the intersection with the pixel |
425 | // in the next cell in column direction | |
d709f420 | 426 | if (dx!=0) |
427 | refc = dz*((refr - x1l)/dx) + z1l; | |
428 | else | |
429 | refc = refn+dirz*zsize; | |
c7a4dac0 | 430 | |
431 | arefm = refm * dirx; | |
432 | arefr = refr * dirx; | |
433 | arefn = refn * dirz; | |
434 | arefc = refc * dirz; | |
435 | ||
436 | if ((arefm < arefr) && (arefn < arefc)){ | |
437 | // the track goes in the pixel in the next cell in row direction | |
438 | xb = refm; | |
439 | zb = refn; | |
440 | cb = c1; | |
441 | rb = r1 + dirz; | |
442 | azb = zb * dirz; | |
443 | az2l = z2l * dirz; | |
444 | if (rb == r2) flagrow=1; | |
445 | if (azb > az2l) { | |
21b825a4 | 446 | zb = z2l; |
447 | xb = x2l; | |
c7a4dac0 | 448 | } // end if |
449 | // shift to the pixel in the next cell in row direction | |
450 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
451 | //to account for cell at the borders of the detector | |
452 | if(zsizeNext==0) zsizeNext = zsize; | |
453 | refn += zsizeNext*dirz; | |
454 | }else { | |
455 | // the track goes in the pixel in the next cell in column direction | |
456 | xb = refr; | |
457 | zb = refc; | |
458 | cb = c1 + dirx; | |
459 | rb = r1; | |
460 | axb = xb * dirx; | |
461 | ax2l = x2l * dirx; | |
462 | if (cb == c2) flagcol=1; | |
463 | if (axb > ax2l) { | |
21b825a4 | 464 | zb = z2l; |
465 | xb = x2l; | |
c7a4dac0 | 466 | } // end ifaxb > ax2l |
467 | ||
468 | // shift to the pixel in the next cell in column direction | |
469 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
470 | //to account for cell at the borders of the detector | |
471 | if(xsizeNext==0) xsizeNext = xsize; | |
472 | refr += xsizeNext*dirx; | |
473 | } // end if (arefm < arefr) && (arefn < arefc) | |
474 | ||
475 | //calculate the energy lost in the crossed pixel | |
476 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
477 | epar = etot*(epar/dtot); | |
478 | ||
479 | //store row, column and energy lost in the crossed pixel | |
480 | frowpixel[npixel] = r1; | |
481 | fcolpixel[npixel] = c1; | |
482 | fenepixel[npixel] = epar; | |
483 | npixel++; | |
21b825a4 | 484 | |
c7a4dac0 | 485 | // the exit point of the track is reached |
486 | if (epar == 0) flag = 1; | |
487 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
488 | if (flag!=1) { | |
489 | r1 = rb; | |
490 | c1 = cb; | |
491 | xa = xb; | |
492 | za = zb; | |
493 | } // end if flag!=1 | |
494 | } while (flag==0); | |
21b825a4 | 495 | } |
c7a4dac0 | 496 | //______________________________________________________________________ |
21b825a4 | 497 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 498 | Int_t idhit,Int_t module, |
499 | AliITSpList *pList) { | |
500 | // Take into account the coupling between adiacent pixels. | |
f8d9a5b8 | 501 | // The parameters probcol and probrow are the probability of the |
502 | // signal in one pixel shared in the two adjacent pixels along | |
503 | // the column and row direction, respectively. | |
504 | // | |
505 | //Begin_Html | |
506 | /* | |
507 | <img src="picts/ITS/barimodel_3.gif"> | |
508 | </pre> | |
509 | <br clear=left> | |
510 | <font size=+2 color=red> | |
511 | <a href="mailto:tiziano.virgili@cern.ch"></a>. | |
512 | </font> | |
513 | <pre> | |
514 | */ | |
515 | //End_Html | |
516 | Int_t j1,j2,flag=0; | |
517 | Double_t pulse1,pulse2; | |
518 | Float_t couplR=0.0,couplC=0.0; | |
519 | Double_t xr=0.; | |
520 | ||
521 | GetCouplings(couplR,couplC); | |
522 | j1 = row; | |
523 | j2 = col; | |
524 | pulse1 = fMapA2->GetSignal(row,col); | |
525 | pulse2 = pulse1; | |
526 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
527 | do{ | |
528 | j1 += isign; | |
529 | // pulse1 *= couplR; | |
530 | xr = gRandom->Rndm(); | |
531 | // if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
532 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){ | |
533 | j1 = row; | |
534 | flag = 1; | |
535 | }else{ | |
536 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
537 | // flag = 0; | |
538 | flag = 1; // only first next!! | |
539 | } // end if | |
540 | } while(flag == 0); | |
541 | // loop in column direction | |
542 | do{ | |
543 | j2 += isign; | |
544 | // pulse2 *= couplC; | |
545 | xr = gRandom->Rndm(); | |
546 | // if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
547 | if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){ | |
548 | j2 = col; | |
549 | flag = 1; | |
550 | }else{ | |
551 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
552 | // flag = 0; | |
553 | flag = 1; // only first next!! | |
554 | } // end if | |
555 | } while(flag == 0); | |
556 | } // for isign | |
557 | } | |
558 | //______________________________________________________________________ | |
559 | void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack, | |
560 | Int_t idhit,Int_t module, | |
561 | AliITSpList *pList) { | |
562 | // Take into account the coupling between adiacent pixels. | |
c7a4dac0 | 563 | // The parameters probcol and probrow are the fractions of the |
564 | // signal in one pixel shared in the two adjacent pixels along | |
565 | // the column and row direction, respectively. | |
566 | // | |
567 | //Begin_Html | |
568 | /* | |
569 | <img src="picts/ITS/barimodel_3.gif"> | |
570 | </pre> | |
571 | <br clear=left> | |
572 | <font size=+2 color=red> | |
573 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
574 | </font> | |
575 | <pre> | |
576 | */ | |
577 | //End_Html | |
578 | Int_t j1,j2,flag=0; | |
579 | Double_t pulse1,pulse2; | |
580 | Float_t couplR=0.0,couplC=0.0; | |
581 | ||
582 | GetCouplings(couplR,couplC); | |
583 | j1 = row; | |
584 | j2 = col; | |
585 | pulse1 = fMapA2->GetSignal(row,col); | |
586 | pulse2 = pulse1; | |
587 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
588 | do{ | |
589 | j1 += isign; | |
590 | pulse1 *= couplR; | |
591 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
592 | pulse1 = fMapA2->GetSignal(row,col); | |
593 | j1 = row; | |
594 | flag = 1; | |
595 | }else{ | |
596 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
597 | flag = 0; | |
598 | } // end if | |
599 | } while(flag == 0); | |
600 | // loop in column direction | |
601 | do{ | |
602 | j2 += isign; | |
603 | pulse2 *= couplC; | |
604 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
605 | pulse2 = fMapA2->GetSignal(row,col); | |
606 | j2 = col; | |
607 | flag = 1; | |
608 | }else{ | |
609 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
610 | flag = 0; | |
611 | } // end if | |
612 | } while(flag == 0); | |
613 | } // for isign | |
21b825a4 | 614 | } |
c7a4dac0 | 615 | //______________________________________________________________________ |
616 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
617 | // The pixels are fired if the energy deposited inside them is above | |
618 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
619 | // and stored in the file digitfilename. One also needs to write out | |
620 | // cases when there is only noise (nhits==0). | |
621 | ||
622 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
623 | ||
ee86d557 | 624 | Int_t size = AliITSdigitSPD::GetNTracks(); |
5c5273c2 | 625 | Int_t * digits = new Int_t[size]; |
626 | Int_t * tracks = new Int_t[size]; | |
627 | Int_t * hits = new Int_t[size]; | |
628 | Float_t * charges = new Float_t[size]; | |
c7a4dac0 | 629 | Int_t j1; |
630 | ||
ac74f489 | 631 | module=0; // remove unused variable warning. |
f8d9a5b8 | 632 | for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;} |
c7a4dac0 | 633 | for (Int_t r=1;r<=GetNPixelsZ();r++) { |
634 | for (Int_t c=1;c<=GetNPixelsX();c++) { | |
635 | // check if the deposited energy in a pixel is above the | |
636 | // threshold | |
637 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
638 | if ( signal > GetThreshold()) { | |
639 | digits[0] = r-1; // digits starts from 0 | |
640 | digits[1] = c-1; // digits starts from 0 | |
641 | //digits[2] = 1; | |
642 | digits[2] = (Int_t) signal; // the signal is stored in | |
643 | // electrons | |
ee86d557 | 644 | for(j1=0;j1<size;j1++){ |
645 | if(j1<pList->GetNEnteries()){ | |
646 | tracks[j1] = pList->GetTrack(r,c,j1); | |
647 | hits[j1] = pList->GetHit(r,c,j1); | |
f8d9a5b8 | 648 | //}else{ |
649 | //tracks[j1] = -3; | |
650 | //hits[j1] = -1; | |
ee86d557 | 651 | } // end if |
f8d9a5b8 | 652 | //charges[j1] = 0; |
c7a4dac0 | 653 | } // end for j1 |
3a97c582 | 654 | Float_t phys = 0; |
c7a4dac0 | 655 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); |
bb6b39bf | 656 | #ifdef DEBUG |
657 | cout << " CreateSPDDigit mod=" << fModule << " r,c=" << r; | |
658 | cout <<","<<c<< " sig=" << fpList->GetSignalOnly(r,c); | |
659 | cout << " noise=" << fpList->GetNoise(r,c); | |
660 | cout << " Msig="<< signal << " Thres=" << GetThreshold()<<endl; | |
661 | #endif | |
c7a4dac0 | 662 | } // end if of threshold condition |
663 | } // for c | |
664 | }// end do on pixels | |
5c5273c2 | 665 | delete [] digits; |
666 | delete [] tracks; | |
667 | delete [] hits; | |
668 | delete [] charges; | |
669 | ||
21b825a4 | 670 | } |
c7a4dac0 | 671 | //______________________________________________________________________ |
672 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
673 | // Set the electronic noise and threshold non-uniformities to all the | |
674 | // pixels in a detector. | |
675 | // The parameter fSigma is the squared sum of the sigma due to noise | |
676 | // and the sigma of the threshold distribution among pixels. | |
677 | // | |
678 | //Begin_Html | |
679 | /* | |
680 | <img src="picts/ITS/barimodel_1.gif"> | |
681 | </pre> | |
682 | <br clear=left> | |
683 | <font size=+2 color=red> | |
684 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
685 | </font> | |
686 | <pre> | |
687 | */ | |
688 | //End_Html | |
689 | Float_t thr=0.0,sigm=0.0; | |
690 | Double_t signal,sigma; | |
691 | Int_t iz,ix; | |
692 | ||
693 | GetThresholds(thr,sigm); | |
694 | sigma = (Double_t) sigm; | |
695 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
696 | for(ix=1;ix<=GetNPixelsX();ix++){ | |
697 | signal = sigma*gRandom->Gaus(); | |
698 | fMapA2->SetHit(iz,ix,signal); | |
699 | // insert in the label-signal-hit list the pixels fired | |
700 | // only by noise | |
701 | pList->AddNoise(iz,ix,module,signal); | |
702 | } // end of loop on pixels | |
21b825a4 | 703 | } // end of loop on pixels |
c7a4dac0 | 704 | } |
705 | //______________________________________________________________________ | |
706 | void AliITSsimulationSPD::SetMask() { | |
707 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
708 | // masked. When the database will be ready, the masked pixels | |
709 | // should be read from it. | |
710 | Double_t signal; | |
711 | Int_t iz,ix,im; | |
712 | Float_t totMask; | |
713 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
714 | // in this way we get the same set of random numbers for all runs. | |
715 | // This is a cluge for now. | |
716 | static TRandom *rnd = new TRandom(); | |
717 | ||
718 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
719 | for(im=1;im<totMask;im++){ | |
720 | do{ | |
721 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
722 | } while(ix<=0 || ix>GetNPixelsX()); | |
723 | do{ | |
724 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
725 | } while(iz<=0 || iz>GetNPixelsZ()); | |
726 | signal = -1.; | |
727 | fMapA2->SetHit(iz,ix,signal); | |
728 | } // end loop on masked pixels | |
729 | } | |
730 | //______________________________________________________________________ | |
21b825a4 | 731 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 732 | // Create Histograms |
733 | Int_t i; | |
21b825a4 | 734 | |
c7a4dac0 | 735 | fHis=new TObjArray(GetNPixelsZ()); |
736 | for(i=0;i<GetNPixelsZ();i++) { | |
737 | TString spdname("spd_"); | |
738 | Char_t candnum[4]; | |
739 | sprintf(candnum,"%d",i+1); | |
740 | spdname.Append(candnum); | |
741 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
742 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
743 | } // end for i | |
b0f5e3fc | 744 | } |
c7a4dac0 | 745 | //______________________________________________________________________ |
21b825a4 | 746 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 747 | // Reset histograms for this detector |
21b825a4 | 748 | Int_t i; |
b0f5e3fc | 749 | |
c7a4dac0 | 750 | for(i=0;i<GetNPixelsZ();i++ ) { |
751 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); | |
752 | } // end for i | |
753 | } | |
754 | //______________________________________________________________________ | |
755 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
756 | // Fills the Summable digits Tree | |
757 | Int_t i,ni,j,nj; | |
758 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
759 | ||
760 | pList->GetMaxMapIndex(ni,nj); | |
761 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
762 | if(pList->GetSignalOnly(i,j)>0.0){ | |
763 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
bb6b39bf | 764 | #ifdef DEBUG |
765 | cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; | |
766 | cout << " CreateSPDSDigit mod=" << fModule << " r,c="; | |
767 | cout << i <<","<< j << " sig=" << fpList->GetSignalOnly(i,j); | |
768 | cout << " noise=" << fpList->GetNoise(i,j) <<endl; | |
769 | #endif | |
c7a4dac0 | 770 | } // end if |
771 | } // end for i,j | |
772 | return; | |
773 | } | |
774 | //______________________________________________________________________ | |
775 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
776 | // Fills fMap2A from the pList of Summable digits | |
3a97c582 | 777 | Int_t ix,iz; |
c7a4dac0 | 778 | |
3a97c582 | 779 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
780 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 781 | return; |
b0f5e3fc | 782 | } |