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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" |
e869281d | 28 | #include "AliITSdigitSPD.h" |
9f033001 | 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; | |
c135f70d | 73 | SetDebug(kFALSE); |
3a97c582 | 74 | |
c7a4dac0 | 75 | /* |
76 | fThresh = 0.; | |
77 | fSigma = 0.; | |
78 | fCouplCol = 0.; | |
79 | fCouplRow = 0.*/ | |
80 | Init((AliITSsegmentationSPD*)seg,(AliITSresponseSPD*)resp); | |
b0f5e3fc | 81 | } |
c7a4dac0 | 82 | //______________________________________________________________________ |
83 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
84 | AliITSresponseSPD *resp) { | |
85 | // Initilizes the variables of AliITSsimulation SPD. | |
86 | ||
87 | fHis = 0; | |
88 | fResponse = resp; | |
89 | fSegmentation = seg; | |
3a97c582 | 90 | fMapA2 = new AliITSMapA2(fSegmentation); |
91 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
c7a4dac0 | 92 | /* |
93 | fResponse->Thresholds(fThresh,fSigma); | |
94 | fResponse->GetNoiseParam(fCouplCol,fCouplRow); | |
95 | fNPixelsZ = fSegmentation->Npz(); | |
96 | fNPixelsX = fSegmentation->Npx(); | |
97 | */ | |
98 | } | |
99 | //______________________________________________________________________ | |
b0f5e3fc | 100 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 101 | // destructor |
b0f5e3fc | 102 | |
c7a4dac0 | 103 | delete fMapA2; |
3a97c582 | 104 | // delete fpList; |
b0f5e3fc | 105 | |
c7a4dac0 | 106 | if (fHis) { |
107 | fHis->Delete(); | |
108 | delete fHis; | |
109 | } // end if | |
b0f5e3fc | 110 | } |
c7a4dac0 | 111 | //______________________________________________________________________ |
ac74f489 | 112 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source) : |
113 | AliITSsimulation(source){ | |
c7a4dac0 | 114 | // Copy Constructor |
115 | ||
116 | if(&source == this) return; | |
117 | ||
118 | this->fMapA2 = source.fMapA2; | |
119 | this->fHis = source.fHis; | |
120 | /* | |
121 | this->fThresh = source.fThresh; | |
122 | this->fSigma = source.fSigma; | |
123 | this->fCouplCol = source.fCouplCol; | |
124 | this->fCouplRow = source.fCouplRow; | |
125 | this->fNPixelsX = source.fNPixelsX; | |
126 | this->fNPixelsZ = source.fNPixelsZ; | |
127 | */ | |
128 | return; | |
b0f5e3fc | 129 | } |
c7a4dac0 | 130 | //______________________________________________________________________ |
131 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
132 | &source) { | |
133 | // Assignment operator | |
134 | ||
135 | if(&source == this) return *this; | |
136 | ||
137 | this->fMapA2 = source.fMapA2; | |
138 | this->fHis = source.fHis; | |
139 | /* | |
140 | this->fThresh = source.fThresh; | |
141 | this->fSigma = source.fSigma; | |
142 | this->fCouplCol = source.fCouplCol; | |
143 | this->fCouplRow = source.fCouplRow; | |
144 | this->fNPixelsX = source.fNPixelsX; | |
145 | this->fNPixelsZ = source.fNPixelsZ; | |
146 | */ | |
147 | return *this; | |
3a97c582 | 148 | } |
149 | //______________________________________________________________________ | |
150 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
151 | // Creates maps to build the list of tracks for each sumable digit | |
152 | // Inputs: | |
153 | // Int_t module // Module number to be simulated | |
154 | // Int_t event // Event number to be simulated | |
155 | // Outputs: | |
156 | // none. | |
157 | // Return | |
158 | // none. | |
159 | ||
160 | fModule = module; | |
161 | fEvent = event; | |
162 | fMapA2->ClearMap(); | |
163 | fpList->ClearMap(); | |
164 | } | |
165 | //______________________________________________________________________ | |
166 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
167 | // Does the Sdigits to Digits work | |
168 | // Inputs: | |
169 | // none. | |
170 | // Outputs: | |
171 | // none. | |
172 | // Return: | |
173 | // none. | |
174 | ||
175 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 176 | } |
177 | //______________________________________________________________________ | |
178 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
179 | Int_t dummy1) { | |
180 | // Sum digitize module | |
181 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. | |
182 | Int_t number = 10000; | |
183 | Int_t *frowpixel = new Int_t[number]; | |
184 | Int_t *fcolpixel = new Int_t[number]; | |
185 | Double_t *fenepixel = new Double_t[number]; | |
186 | ||
ac74f489 | 187 | dummy0 = dummy1; // remove unsued variable warning. |
3a97c582 | 188 | fModule = mod->GetIndex(); |
189 | ||
c7a4dac0 | 190 | // Array of pointers to store the track index of the digits |
191 | // leave +1, otherwise pList crashes when col=256, row=192 | |
c7a4dac0 | 192 | |
3a97c582 | 193 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 194 | |
3a97c582 | 195 | WriteSDigits(fpList); |
c7a4dac0 | 196 | |
197 | // clean memory | |
198 | delete[] frowpixel; | |
199 | delete[] fcolpixel; | |
200 | delete[] fenepixel; | |
201 | fMapA2->ClearMap(); | |
3a97c582 | 202 | fpList->ClearMap(); |
c7a4dac0 | 203 | } |
204 | //______________________________________________________________________ | |
205 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
206 | Int_t dummy1) { | |
207 | // digitize module. Also need to digitize modules with only noise. | |
b0f5e3fc | 208 | |
c7a4dac0 | 209 | Int_t number = 10000; |
210 | Int_t *frowpixel = new Int_t[number]; | |
211 | Int_t *fcolpixel = new Int_t[number]; | |
212 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 213 | |
ac74f489 | 214 | dummy0 = dummy1; // remove unsued variable warning. |
c7a4dac0 | 215 | // Array of pointers to store the track index of the digits |
3a97c582 | 216 | // leave +1, otherwise pList crashes when col=256, row=192 |
217 | fModule = mod->GetIndex(); | |
c7a4dac0 | 218 | // noise setting |
3a97c582 | 219 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 220 | |
3a97c582 | 221 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 222 | |
c7a4dac0 | 223 | // apply mask to SPD module |
224 | SetMask(); | |
21b825a4 | 225 | |
3a97c582 | 226 | CreateDigit(fModule,fpList); |
b0f5e3fc | 227 | |
c7a4dac0 | 228 | // clean memory |
229 | delete[] frowpixel; | |
230 | delete[] fcolpixel; | |
231 | delete[] fenepixel; | |
232 | fMapA2->ClearMap(); | |
3a97c582 | 233 | fpList->ClearMap(); |
21b825a4 | 234 | } |
c7a4dac0 | 235 | //______________________________________________________________________ |
236 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
237 | // sum digits to Digits. | |
bb6b39bf | 238 | |
239 | #ifdef DEBUG | |
240 | cout << "Entering AliITSsimulatinSPD::SDigitsToDigits for module="; | |
241 | cout << module << endl; | |
242 | #endif | |
3a97c582 | 243 | fModule = module; |
b0f5e3fc | 244 | |
c7a4dac0 | 245 | // noise setting |
246 | SetFluctuations(pList,module); | |
b0f5e3fc | 247 | |
3a97c582 | 248 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
249 | // noise is not doubled when calling FillMapFrompList. | |
250 | ||
251 | FillMapFrompList(pList); | |
252 | ||
c7a4dac0 | 253 | // apply mask to SPD module |
254 | SetMask(); | |
21b825a4 | 255 | |
c7a4dac0 | 256 | CreateDigit(module,pList); |
3a97c582 | 257 | |
258 | fMapA2->ClearMap(); | |
259 | pList->ClearMap(); | |
c7a4dac0 | 260 | } |
261 | //______________________________________________________________________ | |
262 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
263 | Int_t hit,Int_t mod,Double_t ene, | |
264 | AliITSpList *pList) { | |
265 | // updates the Map of signal, adding the energy (ene) released by | |
266 | // the current track | |
267 | ||
268 | fMapA2->AddSignal(row,col,ene); | |
269 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
270 | } | |
271 | //______________________________________________________________________ | |
272 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
273 | Double_t ene,AliITSpList *pList) { | |
274 | // updates the Map of noise, adding the energy (ene) give my noise | |
21b825a4 | 275 | |
c7a4dac0 | 276 | fMapA2->AddSignal(row,col,ene); |
277 | pList->AddNoise(row,col,mod,ene); | |
278 | } | |
279 | //______________________________________________________________________ | |
280 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
281 | Int_t *frowpixel,Int_t *fcolpixel, | |
282 | Double_t *fenepixel, | |
283 | AliITSpList *pList) { | |
284 | // Loops over all hits to produce Analog/floting point digits. This | |
285 | // is also the first task in producing standard digits. | |
21b825a4 | 286 | |
c7a4dac0 | 287 | // loop over hits in the module |
288 | Int_t hitpos,nhits = mod->GetNhits(); | |
289 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
290 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); | |
291 | }// end loop over digits | |
292 | } | |
293 | //______________________________________________________________________ | |
294 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
295 | Int_t *frowpixel,Int_t *fcolpixel, | |
296 | Double_t *fenepixel,AliITSpList *pList) { | |
297 | // Steering function to determine the digits associated to a given | |
298 | // hit (hitpos) | |
299 | // The digits are created by charge sharing (ChargeSharing) and by | |
300 | // capacitive coupling (SetCoupling). At all the created digits is | |
301 | // associated the track number of the hit (ntrack) | |
302 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; | |
303 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
304 | Int_t ntrack; | |
305 | Double_t ene=0.0,etot=0.0; | |
306 | const Float_t kconv = 10000.; // cm -> microns | |
307 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
308 | ||
309 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
310 | ||
311 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
312 | // positions shifted and converted in microns | |
313 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
314 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
315 | // positions shifted and converted in microns | |
316 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
317 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
318 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
319 | Int_t module = mod->GetIndex(); | |
320 | ||
321 | // to account for the effective sensitive area | |
322 | // introduced in geometry | |
323 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
324 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
325 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
326 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
327 | ||
328 | //Get the col and row number starting from 1 | |
329 | // the x direction is not inverted for the second layer!!! | |
330 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
331 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
332 | ||
333 | // to account for unexpected equal entrance and | |
334 | // exit coordinates | |
0fee5d51 | 335 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
336 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 337 | |
338 | if ((r1==r2) && (c1==c2)){ | |
339 | // no charge sharing | |
340 | npixel = 1; | |
341 | frowpixel[npixel-1] = r1; | |
342 | fcolpixel[npixel-1] = c1; | |
343 | fenepixel[npixel-1] = etot; | |
344 | } else { | |
345 | // charge sharing | |
346 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
347 | npixel,frowpixel,fcolpixel,fenepixel); | |
348 | } // end if r1==r2 && c1==c2. | |
349 | ||
350 | for (Int_t npix=0;npix<npixel;npix++){ | |
351 | row = frowpixel[npix]; | |
352 | col = fcolpixel[npix]; | |
353 | ene = fenepixel[npix]; | |
354 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
355 | // Starting capacitive coupling effect | |
356 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
357 | } // end for npix | |
358 | } | |
359 | //______________________________________________________________________ | |
360 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
361 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
362 | Int_t r2,Float_t etot, | |
363 | Int_t &npixel,Int_t *frowpixel, | |
364 | Int_t *fcolpixel,Double_t *fenepixel){ | |
365 | // Take into account the geometrical charge sharing when the track | |
366 | // crosses more than one pixel. | |
367 | // | |
368 | //Begin_Html | |
21b825a4 | 369 | /* |
c7a4dac0 | 370 | <img src="picts/ITS/barimodel_2.gif"> |
371 | </pre> | |
372 | <br clear=left> | |
373 | <font size=+2 color=red> | |
374 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
375 | </font> | |
376 | <pre> | |
21b825a4 | 377 | */ |
c7a4dac0 | 378 | //End_Html |
ee86d557 | 379 | //Float_t dm; |
380 | Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc; | |
c7a4dac0 | 381 | Float_t refn=0.; |
382 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
383 | Int_t dirx,dirz,rb,cb; | |
384 | Int_t flag,flagrow,flagcol; | |
385 | Double_t epar; | |
386 | ||
387 | npixel = 0; | |
388 | xa = x1l; | |
389 | za = z1l; | |
cf6105a4 | 390 | // dx = x1l-x2l; |
391 | // dz = z1l-z2l; | |
392 | dx = x2l-x1l; | |
393 | dz = z2l-z1l; | |
c7a4dac0 | 394 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 395 | if (dtot==0.0) dtot = 0.01; |
396 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
397 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 398 | |
399 | // calculate the x coordinate of the pixel in the next column | |
400 | // and the z coordinate of the pixel in the next row | |
401 | Float_t xpos, zpos; | |
402 | ||
403 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
404 | ||
405 | Float_t xsize = fSegmentation->Dpx(0); | |
406 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 407 | |
c7a4dac0 | 408 | if (dirx == 1) refr = xpos+xsize/2.; |
409 | else refr = xpos-xsize/2.; | |
410 | ||
411 | if (dirz == 1) refn = zpos+zsize/2.; | |
412 | else refn = zpos-zsize/2.; | |
413 | ||
414 | flag = 0; | |
415 | flagrow = 0; | |
416 | flagcol = 0; | |
417 | do{ | |
418 | // calculate the x coordinate of the intersection with the pixel | |
419 | // in the next cell in row direction | |
d709f420 | 420 | if(dz!=0) |
421 | refm = dx*((refn - z1l)/dz) + x1l; | |
422 | else | |
423 | refm = refr+dirx*xsize; | |
e8189707 | 424 | |
c7a4dac0 | 425 | // calculate the z coordinate of the intersection with the pixel |
426 | // in the next cell in column direction | |
d709f420 | 427 | if (dx!=0) |
428 | refc = dz*((refr - x1l)/dx) + z1l; | |
429 | else | |
430 | refc = refn+dirz*zsize; | |
c7a4dac0 | 431 | |
432 | arefm = refm * dirx; | |
433 | arefr = refr * dirx; | |
434 | arefn = refn * dirz; | |
435 | arefc = refc * dirz; | |
436 | ||
437 | if ((arefm < arefr) && (arefn < arefc)){ | |
438 | // the track goes in the pixel in the next cell in row direction | |
439 | xb = refm; | |
440 | zb = refn; | |
441 | cb = c1; | |
442 | rb = r1 + dirz; | |
443 | azb = zb * dirz; | |
444 | az2l = z2l * dirz; | |
445 | if (rb == r2) flagrow=1; | |
446 | if (azb > az2l) { | |
21b825a4 | 447 | zb = z2l; |
448 | xb = x2l; | |
c7a4dac0 | 449 | } // end if |
450 | // shift to the pixel in the next cell in row direction | |
451 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
452 | //to account for cell at the borders of the detector | |
453 | if(zsizeNext==0) zsizeNext = zsize; | |
454 | refn += zsizeNext*dirz; | |
455 | }else { | |
456 | // the track goes in the pixel in the next cell in column direction | |
457 | xb = refr; | |
458 | zb = refc; | |
459 | cb = c1 + dirx; | |
460 | rb = r1; | |
461 | axb = xb * dirx; | |
462 | ax2l = x2l * dirx; | |
463 | if (cb == c2) flagcol=1; | |
464 | if (axb > ax2l) { | |
21b825a4 | 465 | zb = z2l; |
466 | xb = x2l; | |
c7a4dac0 | 467 | } // end ifaxb > ax2l |
468 | ||
469 | // shift to the pixel in the next cell in column direction | |
470 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
471 | //to account for cell at the borders of the detector | |
472 | if(xsizeNext==0) xsizeNext = xsize; | |
473 | refr += xsizeNext*dirx; | |
474 | } // end if (arefm < arefr) && (arefn < arefc) | |
475 | ||
476 | //calculate the energy lost in the crossed pixel | |
477 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
478 | epar = etot*(epar/dtot); | |
479 | ||
480 | //store row, column and energy lost in the crossed pixel | |
481 | frowpixel[npixel] = r1; | |
482 | fcolpixel[npixel] = c1; | |
483 | fenepixel[npixel] = epar; | |
484 | npixel++; | |
21b825a4 | 485 | |
c7a4dac0 | 486 | // the exit point of the track is reached |
487 | if (epar == 0) flag = 1; | |
488 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
489 | if (flag!=1) { | |
490 | r1 = rb; | |
491 | c1 = cb; | |
492 | xa = xb; | |
493 | za = zb; | |
494 | } // end if flag!=1 | |
495 | } while (flag==0); | |
21b825a4 | 496 | } |
c7a4dac0 | 497 | //______________________________________________________________________ |
21b825a4 | 498 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 499 | Int_t idhit,Int_t module, |
500 | AliITSpList *pList) { | |
501 | // Take into account the coupling between adiacent pixels. | |
f8d9a5b8 | 502 | // The parameters probcol and probrow are the probability of the |
503 | // signal in one pixel shared in the two adjacent pixels along | |
504 | // the column and row direction, respectively. | |
505 | // | |
506 | //Begin_Html | |
507 | /* | |
508 | <img src="picts/ITS/barimodel_3.gif"> | |
509 | </pre> | |
510 | <br clear=left> | |
511 | <font size=+2 color=red> | |
512 | <a href="mailto:tiziano.virgili@cern.ch"></a>. | |
513 | </font> | |
514 | <pre> | |
515 | */ | |
516 | //End_Html | |
517 | Int_t j1,j2,flag=0; | |
518 | Double_t pulse1,pulse2; | |
519 | Float_t couplR=0.0,couplC=0.0; | |
520 | Double_t xr=0.; | |
521 | ||
522 | GetCouplings(couplR,couplC); | |
523 | j1 = row; | |
524 | j2 = col; | |
525 | pulse1 = fMapA2->GetSignal(row,col); | |
526 | pulse2 = pulse1; | |
527 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
528 | do{ | |
529 | j1 += isign; | |
530 | // pulse1 *= couplR; | |
531 | xr = gRandom->Rndm(); | |
532 | // if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
533 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){ | |
534 | j1 = row; | |
535 | flag = 1; | |
536 | }else{ | |
537 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
538 | // flag = 0; | |
539 | flag = 1; // only first next!! | |
540 | } // end if | |
541 | } while(flag == 0); | |
542 | // loop in column direction | |
543 | do{ | |
544 | j2 += isign; | |
545 | // pulse2 *= couplC; | |
546 | xr = gRandom->Rndm(); | |
547 | // if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
548 | if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){ | |
549 | j2 = col; | |
550 | flag = 1; | |
551 | }else{ | |
552 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
553 | // flag = 0; | |
554 | flag = 1; // only first next!! | |
555 | } // end if | |
556 | } while(flag == 0); | |
557 | } // for isign | |
558 | } | |
559 | //______________________________________________________________________ | |
560 | void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack, | |
561 | Int_t idhit,Int_t module, | |
562 | AliITSpList *pList) { | |
563 | // Take into account the coupling between adiacent pixels. | |
c7a4dac0 | 564 | // The parameters probcol and probrow are the fractions of the |
565 | // signal in one pixel shared in the two adjacent pixels along | |
566 | // the column and row direction, respectively. | |
567 | // | |
568 | //Begin_Html | |
569 | /* | |
570 | <img src="picts/ITS/barimodel_3.gif"> | |
571 | </pre> | |
572 | <br clear=left> | |
573 | <font size=+2 color=red> | |
574 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
575 | </font> | |
576 | <pre> | |
577 | */ | |
578 | //End_Html | |
579 | Int_t j1,j2,flag=0; | |
580 | Double_t pulse1,pulse2; | |
581 | Float_t couplR=0.0,couplC=0.0; | |
582 | ||
583 | GetCouplings(couplR,couplC); | |
584 | j1 = row; | |
585 | j2 = col; | |
586 | pulse1 = fMapA2->GetSignal(row,col); | |
587 | pulse2 = pulse1; | |
588 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
589 | do{ | |
590 | j1 += isign; | |
591 | pulse1 *= couplR; | |
592 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
593 | pulse1 = fMapA2->GetSignal(row,col); | |
594 | j1 = row; | |
595 | flag = 1; | |
596 | }else{ | |
597 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
598 | flag = 0; | |
599 | } // end if | |
600 | } while(flag == 0); | |
601 | // loop in column direction | |
602 | do{ | |
603 | j2 += isign; | |
604 | pulse2 *= couplC; | |
605 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
606 | pulse2 = fMapA2->GetSignal(row,col); | |
607 | j2 = col; | |
608 | flag = 1; | |
609 | }else{ | |
610 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
611 | flag = 0; | |
612 | } // end if | |
613 | } while(flag == 0); | |
614 | } // for isign | |
21b825a4 | 615 | } |
c7a4dac0 | 616 | //______________________________________________________________________ |
617 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
618 | // The pixels are fired if the energy deposited inside them is above | |
619 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
620 | // and stored in the file digitfilename. One also needs to write out | |
621 | // cases when there is only noise (nhits==0). | |
622 | ||
623 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
624 | ||
ee86d557 | 625 | Int_t size = AliITSdigitSPD::GetNTracks(); |
5c5273c2 | 626 | Int_t * digits = new Int_t[size]; |
627 | Int_t * tracks = new Int_t[size]; | |
628 | Int_t * hits = new Int_t[size]; | |
629 | Float_t * charges = new Float_t[size]; | |
c7a4dac0 | 630 | Int_t j1; |
631 | ||
ac74f489 | 632 | module=0; // remove unused variable warning. |
f8d9a5b8 | 633 | for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;} |
c7a4dac0 | 634 | for (Int_t r=1;r<=GetNPixelsZ();r++) { |
635 | for (Int_t c=1;c<=GetNPixelsX();c++) { | |
636 | // check if the deposited energy in a pixel is above the | |
637 | // threshold | |
638 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
639 | if ( signal > GetThreshold()) { | |
640 | digits[0] = r-1; // digits starts from 0 | |
641 | digits[1] = c-1; // digits starts from 0 | |
642 | //digits[2] = 1; | |
643 | digits[2] = (Int_t) signal; // the signal is stored in | |
644 | // electrons | |
ee86d557 | 645 | for(j1=0;j1<size;j1++){ |
646 | if(j1<pList->GetNEnteries()){ | |
647 | tracks[j1] = pList->GetTrack(r,c,j1); | |
648 | hits[j1] = pList->GetHit(r,c,j1); | |
f8d9a5b8 | 649 | //}else{ |
650 | //tracks[j1] = -3; | |
651 | //hits[j1] = -1; | |
ee86d557 | 652 | } // end if |
f8d9a5b8 | 653 | //charges[j1] = 0; |
c7a4dac0 | 654 | } // end for j1 |
3a97c582 | 655 | Float_t phys = 0; |
c7a4dac0 | 656 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); |
bb6b39bf | 657 | #ifdef DEBUG |
658 | cout << " CreateSPDDigit mod=" << fModule << " r,c=" << r; | |
659 | cout <<","<<c<< " sig=" << fpList->GetSignalOnly(r,c); | |
660 | cout << " noise=" << fpList->GetNoise(r,c); | |
661 | cout << " Msig="<< signal << " Thres=" << GetThreshold()<<endl; | |
662 | #endif | |
c7a4dac0 | 663 | } // end if of threshold condition |
664 | } // for c | |
665 | }// end do on pixels | |
5c5273c2 | 666 | delete [] digits; |
667 | delete [] tracks; | |
668 | delete [] hits; | |
669 | delete [] charges; | |
670 | ||
21b825a4 | 671 | } |
c7a4dac0 | 672 | //______________________________________________________________________ |
673 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
674 | // Set the electronic noise and threshold non-uniformities to all the | |
675 | // pixels in a detector. | |
676 | // The parameter fSigma is the squared sum of the sigma due to noise | |
677 | // and the sigma of the threshold distribution among pixels. | |
678 | // | |
679 | //Begin_Html | |
680 | /* | |
681 | <img src="picts/ITS/barimodel_1.gif"> | |
682 | </pre> | |
683 | <br clear=left> | |
684 | <font size=+2 color=red> | |
685 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
686 | </font> | |
687 | <pre> | |
688 | */ | |
689 | //End_Html | |
690 | Float_t thr=0.0,sigm=0.0; | |
691 | Double_t signal,sigma; | |
692 | Int_t iz,ix; | |
693 | ||
694 | GetThresholds(thr,sigm); | |
695 | sigma = (Double_t) sigm; | |
696 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
697 | for(ix=1;ix<=GetNPixelsX();ix++){ | |
698 | signal = sigma*gRandom->Gaus(); | |
699 | fMapA2->SetHit(iz,ix,signal); | |
700 | // insert in the label-signal-hit list the pixels fired | |
701 | // only by noise | |
702 | pList->AddNoise(iz,ix,module,signal); | |
703 | } // end of loop on pixels | |
21b825a4 | 704 | } // end of loop on pixels |
c7a4dac0 | 705 | } |
706 | //______________________________________________________________________ | |
707 | void AliITSsimulationSPD::SetMask() { | |
708 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
709 | // masked. When the database will be ready, the masked pixels | |
710 | // should be read from it. | |
711 | Double_t signal; | |
712 | Int_t iz,ix,im; | |
713 | Float_t totMask; | |
714 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
715 | // in this way we get the same set of random numbers for all runs. | |
716 | // This is a cluge for now. | |
717 | static TRandom *rnd = new TRandom(); | |
718 | ||
719 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
720 | for(im=1;im<totMask;im++){ | |
721 | do{ | |
722 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
723 | } while(ix<=0 || ix>GetNPixelsX()); | |
724 | do{ | |
725 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
726 | } while(iz<=0 || iz>GetNPixelsZ()); | |
727 | signal = -1.; | |
728 | fMapA2->SetHit(iz,ix,signal); | |
729 | } // end loop on masked pixels | |
730 | } | |
731 | //______________________________________________________________________ | |
21b825a4 | 732 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 733 | // Create Histograms |
734 | Int_t i; | |
21b825a4 | 735 | |
c7a4dac0 | 736 | fHis=new TObjArray(GetNPixelsZ()); |
737 | for(i=0;i<GetNPixelsZ();i++) { | |
738 | TString spdname("spd_"); | |
739 | Char_t candnum[4]; | |
740 | sprintf(candnum,"%d",i+1); | |
741 | spdname.Append(candnum); | |
742 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
743 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
744 | } // end for i | |
b0f5e3fc | 745 | } |
c7a4dac0 | 746 | //______________________________________________________________________ |
21b825a4 | 747 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 748 | // Reset histograms for this detector |
21b825a4 | 749 | Int_t i; |
b0f5e3fc | 750 | |
c7a4dac0 | 751 | for(i=0;i<GetNPixelsZ();i++ ) { |
752 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); | |
753 | } // end for i | |
754 | } | |
755 | //______________________________________________________________________ | |
756 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
757 | // Fills the Summable digits Tree | |
758 | Int_t i,ni,j,nj; | |
759 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
760 | ||
761 | pList->GetMaxMapIndex(ni,nj); | |
762 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
763 | if(pList->GetSignalOnly(i,j)>0.0){ | |
764 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
bb6b39bf | 765 | #ifdef DEBUG |
766 | cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; | |
767 | cout << " CreateSPDSDigit mod=" << fModule << " r,c="; | |
768 | cout << i <<","<< j << " sig=" << fpList->GetSignalOnly(i,j); | |
769 | cout << " noise=" << fpList->GetNoise(i,j) <<endl; | |
770 | #endif | |
c7a4dac0 | 771 | } // end if |
772 | } // end for i,j | |
773 | return; | |
774 | } | |
775 | //______________________________________________________________________ | |
776 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
777 | // Fills fMap2A from the pList of Summable digits | |
3a97c582 | 778 | Int_t ix,iz; |
c7a4dac0 | 779 | |
3a97c582 | 780 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
781 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 782 | return; |
b0f5e3fc | 783 | } |