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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 | $Log$ | |
d709f420 | 18 | Revision 1.15 2002/03/15 17:32:14 nilsen |
19 | Reintroduced SDigitization, and Digitization from SDigits, along with | |
20 | functions InitSimulationModule, and FinishSDigitizModule. | |
21 | ||
3a97c582 | 22 | Revision 1.14 2001/11/23 13:04:07 barbera |
23 | Some protection added in case of high multiplicity | |
24 | ||
0fee5d51 | 25 | Revision 1.13 2001/11/13 11:13:24 barbera |
26 | A protection against tracks with the same entrance and exit has been made more strict | |
27 | ||
0cadf298 | 28 | Revision 1.12 2001/10/04 22:44:31 nilsen |
29 | Major changes in supppor of PreDigits (SDigits). Changes made with will make | |
30 | it easier to suppor expected changes in AliITSHit class. Added use of new | |
31 | class AliITSpList. Both SPD and SDD have added effects of Dead Channels. Both | |
32 | of these will require addtional work as data bases of detectors and the like | |
33 | are developed. | |
34 | ||
c7a4dac0 | 35 | */ |
b0f5e3fc | 36 | #include <iostream.h> |
37 | #include <TRandom.h> | |
38 | #include <TH1.h> | |
e8189707 | 39 | #include <TMath.h> |
9f033001 | 40 | #include <TString.h> |
41 | #include <TParticle.h> | |
e8189707 | 42 | |
b0f5e3fc | 43 | #include "AliRun.h" |
e8189707 | 44 | #include "AliITS.h" |
9f033001 | 45 | #include "AliITShit.h" |
46 | #include "AliITSdigit.h" | |
47 | #include "AliITSmodule.h" | |
21b825a4 | 48 | #include "AliITSMapA2.h" |
c7a4dac0 | 49 | #include "AliITSpList.h" |
b0f5e3fc | 50 | #include "AliITSsimulationSPD.h" |
9f033001 | 51 | #include "AliITSsegmentation.h" |
52 | #include "AliITSresponse.h" | |
c7a4dac0 | 53 | #include "AliITSsegmentationSPD.h" |
54 | #include "AliITSresponseSPD.h" | |
9f033001 | 55 | |
e8189707 | 56 | |
b0f5e3fc | 57 | ClassImp(AliITSsimulationSPD) |
58 | //////////////////////////////////////////////////////////////////////// | |
59 | // Version: 0 | |
21b825a4 | 60 | // Written by Rocco Caliandro |
61 | // from a model developed with T. Virgili and R.A. Fini | |
62 | // June 15 2000 | |
b0f5e3fc | 63 | // |
64 | // AliITSsimulationSPD is the simulation of SPDs | |
21b825a4 | 65 | // |
c7a4dac0 | 66 | //______________________________________________________________________ |
21b825a4 | 67 | AliITSsimulationSPD::AliITSsimulationSPD(){ |
c7a4dac0 | 68 | // Default constructor |
69 | ||
70 | fResponse = 0; | |
71 | fSegmentation = 0; | |
72 | fHis = 0; | |
73 | fMapA2 = 0; | |
3a97c582 | 74 | |
c7a4dac0 | 75 | /* |
76 | fThresh = 0.; | |
77 | fSigma = 0.; | |
78 | fCouplCol = 0.; | |
79 | fCouplRow = 0.; */ | |
b0f5e3fc | 80 | } |
c7a4dac0 | 81 | //______________________________________________________________________ |
82 | AliITSsimulationSPD::AliITSsimulationSPD(AliITSsegmentation *seg, | |
83 | AliITSresponse *resp) { | |
84 | // Standard constructor | |
85 | ||
86 | fResponse = 0; | |
87 | fSegmentation = 0; | |
88 | fHis = 0; | |
89 | fMapA2 = 0; | |
3a97c582 | 90 | |
c7a4dac0 | 91 | /* |
92 | fThresh = 0.; | |
93 | fSigma = 0.; | |
94 | fCouplCol = 0.; | |
95 | fCouplRow = 0.*/ | |
96 | Init((AliITSsegmentationSPD*)seg,(AliITSresponseSPD*)resp); | |
b0f5e3fc | 97 | } |
c7a4dac0 | 98 | //______________________________________________________________________ |
99 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
100 | AliITSresponseSPD *resp) { | |
101 | // Initilizes the variables of AliITSsimulation SPD. | |
102 | ||
103 | fHis = 0; | |
104 | fResponse = resp; | |
105 | fSegmentation = seg; | |
3a97c582 | 106 | fMapA2 = new AliITSMapA2(fSegmentation); |
107 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
c7a4dac0 | 108 | /* |
109 | fResponse->Thresholds(fThresh,fSigma); | |
110 | fResponse->GetNoiseParam(fCouplCol,fCouplRow); | |
111 | fNPixelsZ = fSegmentation->Npz(); | |
112 | fNPixelsX = fSegmentation->Npx(); | |
113 | */ | |
114 | } | |
115 | //______________________________________________________________________ | |
b0f5e3fc | 116 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 117 | // destructor |
b0f5e3fc | 118 | |
c7a4dac0 | 119 | delete fMapA2; |
3a97c582 | 120 | // delete fpList; |
b0f5e3fc | 121 | |
c7a4dac0 | 122 | if (fHis) { |
123 | fHis->Delete(); | |
124 | delete fHis; | |
125 | } // end if | |
b0f5e3fc | 126 | } |
c7a4dac0 | 127 | //______________________________________________________________________ |
b0f5e3fc | 128 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source){ |
c7a4dac0 | 129 | // Copy Constructor |
130 | ||
131 | if(&source == this) return; | |
132 | ||
133 | this->fMapA2 = source.fMapA2; | |
134 | this->fHis = source.fHis; | |
135 | /* | |
136 | this->fThresh = source.fThresh; | |
137 | this->fSigma = source.fSigma; | |
138 | this->fCouplCol = source.fCouplCol; | |
139 | this->fCouplRow = source.fCouplRow; | |
140 | this->fNPixelsX = source.fNPixelsX; | |
141 | this->fNPixelsZ = source.fNPixelsZ; | |
142 | */ | |
143 | return; | |
b0f5e3fc | 144 | } |
c7a4dac0 | 145 | //______________________________________________________________________ |
146 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
147 | &source) { | |
148 | // Assignment operator | |
149 | ||
150 | if(&source == this) return *this; | |
151 | ||
152 | this->fMapA2 = source.fMapA2; | |
153 | this->fHis = source.fHis; | |
154 | /* | |
155 | this->fThresh = source.fThresh; | |
156 | this->fSigma = source.fSigma; | |
157 | this->fCouplCol = source.fCouplCol; | |
158 | this->fCouplRow = source.fCouplRow; | |
159 | this->fNPixelsX = source.fNPixelsX; | |
160 | this->fNPixelsZ = source.fNPixelsZ; | |
161 | */ | |
162 | return *this; | |
3a97c582 | 163 | } |
164 | //______________________________________________________________________ | |
165 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
166 | // Creates maps to build the list of tracks for each sumable digit | |
167 | // Inputs: | |
168 | // Int_t module // Module number to be simulated | |
169 | // Int_t event // Event number to be simulated | |
170 | // Outputs: | |
171 | // none. | |
172 | // Return | |
173 | // none. | |
174 | ||
175 | fModule = module; | |
176 | fEvent = event; | |
177 | fMapA2->ClearMap(); | |
178 | fpList->ClearMap(); | |
179 | } | |
180 | //______________________________________________________________________ | |
181 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
182 | // Does the Sdigits to Digits work | |
183 | // Inputs: | |
184 | // none. | |
185 | // Outputs: | |
186 | // none. | |
187 | // Return: | |
188 | // none. | |
189 | ||
190 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 191 | } |
192 | //______________________________________________________________________ | |
193 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
194 | Int_t dummy1) { | |
195 | // Sum digitize module | |
196 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. | |
197 | Int_t number = 10000; | |
198 | Int_t *frowpixel = new Int_t[number]; | |
199 | Int_t *fcolpixel = new Int_t[number]; | |
200 | Double_t *fenepixel = new Double_t[number]; | |
201 | ||
3a97c582 | 202 | fModule = mod->GetIndex(); |
203 | ||
c7a4dac0 | 204 | // Array of pointers to store the track index of the digits |
205 | // leave +1, otherwise pList crashes when col=256, row=192 | |
c7a4dac0 | 206 | |
3a97c582 | 207 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 208 | |
3a97c582 | 209 | WriteSDigits(fpList); |
c7a4dac0 | 210 | |
211 | // clean memory | |
212 | delete[] frowpixel; | |
213 | delete[] fcolpixel; | |
214 | delete[] fenepixel; | |
215 | fMapA2->ClearMap(); | |
3a97c582 | 216 | fpList->ClearMap(); |
c7a4dac0 | 217 | } |
218 | //______________________________________________________________________ | |
219 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
220 | Int_t dummy1) { | |
221 | // digitize module. Also need to digitize modules with only noise. | |
b0f5e3fc | 222 | |
c7a4dac0 | 223 | Int_t number = 10000; |
224 | Int_t *frowpixel = new Int_t[number]; | |
225 | Int_t *fcolpixel = new Int_t[number]; | |
226 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 227 | |
c7a4dac0 | 228 | // Array of pointers to store the track index of the digits |
3a97c582 | 229 | // leave +1, otherwise pList crashes when col=256, row=192 |
230 | fModule = mod->GetIndex(); | |
c7a4dac0 | 231 | // noise setting |
3a97c582 | 232 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 233 | |
3a97c582 | 234 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 235 | |
c7a4dac0 | 236 | // apply mask to SPD module |
237 | SetMask(); | |
21b825a4 | 238 | |
3a97c582 | 239 | CreateDigit(fModule,fpList); |
b0f5e3fc | 240 | |
c7a4dac0 | 241 | // clean memory |
242 | delete[] frowpixel; | |
243 | delete[] fcolpixel; | |
244 | delete[] fenepixel; | |
245 | fMapA2->ClearMap(); | |
3a97c582 | 246 | fpList->ClearMap(); |
21b825a4 | 247 | } |
c7a4dac0 | 248 | //______________________________________________________________________ |
249 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
250 | // sum digits to Digits. | |
3a97c582 | 251 | // cout << "Entering AliITSsimulatinSPD::SDigitsToDigits for module="; |
252 | // cout << module << endl; | |
253 | fModule = module; | |
b0f5e3fc | 254 | |
c7a4dac0 | 255 | // noise setting |
256 | SetFluctuations(pList,module); | |
b0f5e3fc | 257 | |
3a97c582 | 258 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
259 | // noise is not doubled when calling FillMapFrompList. | |
260 | ||
261 | FillMapFrompList(pList); | |
262 | ||
c7a4dac0 | 263 | // apply mask to SPD module |
264 | SetMask(); | |
21b825a4 | 265 | |
c7a4dac0 | 266 | CreateDigit(module,pList); |
3a97c582 | 267 | |
268 | fMapA2->ClearMap(); | |
269 | pList->ClearMap(); | |
c7a4dac0 | 270 | } |
271 | //______________________________________________________________________ | |
272 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
273 | Int_t hit,Int_t mod,Double_t ene, | |
274 | AliITSpList *pList) { | |
275 | // updates the Map of signal, adding the energy (ene) released by | |
276 | // the current track | |
277 | ||
278 | fMapA2->AddSignal(row,col,ene); | |
279 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
280 | } | |
281 | //______________________________________________________________________ | |
282 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
283 | Double_t ene,AliITSpList *pList) { | |
284 | // updates the Map of noise, adding the energy (ene) give my noise | |
21b825a4 | 285 | |
c7a4dac0 | 286 | fMapA2->AddSignal(row,col,ene); |
287 | pList->AddNoise(row,col,mod,ene); | |
288 | } | |
289 | //______________________________________________________________________ | |
290 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
291 | Int_t *frowpixel,Int_t *fcolpixel, | |
292 | Double_t *fenepixel, | |
293 | AliITSpList *pList) { | |
294 | // Loops over all hits to produce Analog/floting point digits. This | |
295 | // is also the first task in producing standard digits. | |
21b825a4 | 296 | |
c7a4dac0 | 297 | // loop over hits in the module |
298 | Int_t hitpos,nhits = mod->GetNhits(); | |
299 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
300 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); | |
301 | }// end loop over digits | |
302 | } | |
303 | //______________________________________________________________________ | |
304 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
305 | Int_t *frowpixel,Int_t *fcolpixel, | |
306 | Double_t *fenepixel,AliITSpList *pList) { | |
307 | // Steering function to determine the digits associated to a given | |
308 | // hit (hitpos) | |
309 | // The digits are created by charge sharing (ChargeSharing) and by | |
310 | // capacitive coupling (SetCoupling). At all the created digits is | |
311 | // associated the track number of the hit (ntrack) | |
312 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; | |
313 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
314 | Int_t ntrack; | |
315 | Double_t ene=0.0,etot=0.0; | |
316 | const Float_t kconv = 10000.; // cm -> microns | |
317 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
318 | ||
319 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
320 | ||
321 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
322 | // positions shifted and converted in microns | |
323 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
324 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
325 | // positions shifted and converted in microns | |
326 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
327 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
328 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
329 | Int_t module = mod->GetIndex(); | |
330 | ||
331 | // to account for the effective sensitive area | |
332 | // introduced in geometry | |
333 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
334 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
335 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
336 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
337 | ||
338 | //Get the col and row number starting from 1 | |
339 | // the x direction is not inverted for the second layer!!! | |
340 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
341 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
342 | ||
343 | // to account for unexpected equal entrance and | |
344 | // exit coordinates | |
0fee5d51 | 345 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
346 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 347 | |
348 | if ((r1==r2) && (c1==c2)){ | |
349 | // no charge sharing | |
350 | npixel = 1; | |
351 | frowpixel[npixel-1] = r1; | |
352 | fcolpixel[npixel-1] = c1; | |
353 | fenepixel[npixel-1] = etot; | |
354 | } else { | |
355 | // charge sharing | |
356 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
357 | npixel,frowpixel,fcolpixel,fenepixel); | |
358 | } // end if r1==r2 && c1==c2. | |
359 | ||
360 | for (Int_t npix=0;npix<npixel;npix++){ | |
361 | row = frowpixel[npix]; | |
362 | col = fcolpixel[npix]; | |
363 | ene = fenepixel[npix]; | |
364 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
365 | // Starting capacitive coupling effect | |
366 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
367 | } // end for npix | |
368 | } | |
369 | //______________________________________________________________________ | |
370 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
371 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
372 | Int_t r2,Float_t etot, | |
373 | Int_t &npixel,Int_t *frowpixel, | |
374 | Int_t *fcolpixel,Double_t *fenepixel){ | |
375 | // Take into account the geometrical charge sharing when the track | |
376 | // crosses more than one pixel. | |
377 | // | |
378 | //Begin_Html | |
21b825a4 | 379 | /* |
c7a4dac0 | 380 | <img src="picts/ITS/barimodel_2.gif"> |
381 | </pre> | |
382 | <br clear=left> | |
383 | <font size=+2 color=red> | |
384 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
385 | </font> | |
386 | <pre> | |
21b825a4 | 387 | */ |
c7a4dac0 | 388 | //End_Html |
389 | Float_t xa,za,xb,zb,dx,dz,dtot,dm,refr,refm,refc; | |
390 | Float_t refn=0.; | |
391 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
392 | Int_t dirx,dirz,rb,cb; | |
393 | Int_t flag,flagrow,flagcol; | |
394 | Double_t epar; | |
395 | ||
396 | npixel = 0; | |
397 | xa = x1l; | |
398 | za = z1l; | |
d709f420 | 399 | dx = x1l-x2l; |
400 | dz = z1l-z2l; | |
c7a4dac0 | 401 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 402 | if (dtot==0.0) dtot = 0.01; |
403 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
404 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 405 | |
406 | // calculate the x coordinate of the pixel in the next column | |
407 | // and the z coordinate of the pixel in the next row | |
408 | Float_t xpos, zpos; | |
409 | ||
410 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
411 | ||
412 | Float_t xsize = fSegmentation->Dpx(0); | |
413 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 414 | |
c7a4dac0 | 415 | if (dirx == 1) refr = xpos+xsize/2.; |
416 | else refr = xpos-xsize/2.; | |
417 | ||
418 | if (dirz == 1) refn = zpos+zsize/2.; | |
419 | else refn = zpos-zsize/2.; | |
420 | ||
421 | flag = 0; | |
422 | flagrow = 0; | |
423 | flagcol = 0; | |
424 | do{ | |
425 | // calculate the x coordinate of the intersection with the pixel | |
426 | // in the next cell in row direction | |
d709f420 | 427 | if(dz!=0) |
428 | refm = dx*((refn - z1l)/dz) + x1l; | |
429 | else | |
430 | refm = refr+dirx*xsize; | |
e8189707 | 431 | |
c7a4dac0 | 432 | // calculate the z coordinate of the intersection with the pixel |
433 | // in the next cell in column direction | |
d709f420 | 434 | if (dx!=0) |
435 | refc = dz*((refr - x1l)/dx) + z1l; | |
436 | else | |
437 | refc = refn+dirz*zsize; | |
c7a4dac0 | 438 | |
439 | arefm = refm * dirx; | |
440 | arefr = refr * dirx; | |
441 | arefn = refn * dirz; | |
442 | arefc = refc * dirz; | |
443 | ||
444 | if ((arefm < arefr) && (arefn < arefc)){ | |
445 | // the track goes in the pixel in the next cell in row direction | |
446 | xb = refm; | |
447 | zb = refn; | |
448 | cb = c1; | |
449 | rb = r1 + dirz; | |
450 | azb = zb * dirz; | |
451 | az2l = z2l * dirz; | |
452 | if (rb == r2) flagrow=1; | |
453 | if (azb > az2l) { | |
21b825a4 | 454 | zb = z2l; |
455 | xb = x2l; | |
c7a4dac0 | 456 | } // end if |
457 | // shift to the pixel in the next cell in row direction | |
458 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
459 | //to account for cell at the borders of the detector | |
460 | if(zsizeNext==0) zsizeNext = zsize; | |
461 | refn += zsizeNext*dirz; | |
462 | }else { | |
463 | // the track goes in the pixel in the next cell in column direction | |
464 | xb = refr; | |
465 | zb = refc; | |
466 | cb = c1 + dirx; | |
467 | rb = r1; | |
468 | axb = xb * dirx; | |
469 | ax2l = x2l * dirx; | |
470 | if (cb == c2) flagcol=1; | |
471 | if (axb > ax2l) { | |
21b825a4 | 472 | zb = z2l; |
473 | xb = x2l; | |
c7a4dac0 | 474 | } // end ifaxb > ax2l |
475 | ||
476 | // shift to the pixel in the next cell in column direction | |
477 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
478 | //to account for cell at the borders of the detector | |
479 | if(xsizeNext==0) xsizeNext = xsize; | |
480 | refr += xsizeNext*dirx; | |
481 | } // end if (arefm < arefr) && (arefn < arefc) | |
482 | ||
483 | //calculate the energy lost in the crossed pixel | |
484 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
485 | epar = etot*(epar/dtot); | |
486 | ||
487 | //store row, column and energy lost in the crossed pixel | |
488 | frowpixel[npixel] = r1; | |
489 | fcolpixel[npixel] = c1; | |
490 | fenepixel[npixel] = epar; | |
491 | npixel++; | |
21b825a4 | 492 | |
c7a4dac0 | 493 | // the exit point of the track is reached |
494 | if (epar == 0) flag = 1; | |
495 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
496 | if (flag!=1) { | |
497 | r1 = rb; | |
498 | c1 = cb; | |
499 | xa = xb; | |
500 | za = zb; | |
501 | } // end if flag!=1 | |
502 | } while (flag==0); | |
21b825a4 | 503 | } |
c7a4dac0 | 504 | //______________________________________________________________________ |
21b825a4 | 505 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 506 | Int_t idhit,Int_t module, |
507 | AliITSpList *pList) { | |
508 | // Take into account the coupling between adiacent pixels. | |
509 | // The parameters probcol and probrow are the fractions of the | |
510 | // signal in one pixel shared in the two adjacent pixels along | |
511 | // the column and row direction, respectively. | |
512 | // | |
513 | //Begin_Html | |
514 | /* | |
515 | <img src="picts/ITS/barimodel_3.gif"> | |
516 | </pre> | |
517 | <br clear=left> | |
518 | <font size=+2 color=red> | |
519 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
520 | </font> | |
521 | <pre> | |
522 | */ | |
523 | //End_Html | |
524 | Int_t j1,j2,flag=0; | |
525 | Double_t pulse1,pulse2; | |
526 | Float_t couplR=0.0,couplC=0.0; | |
527 | ||
528 | GetCouplings(couplR,couplC); | |
529 | j1 = row; | |
530 | j2 = col; | |
531 | pulse1 = fMapA2->GetSignal(row,col); | |
532 | pulse2 = pulse1; | |
533 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
534 | do{ | |
535 | j1 += isign; | |
536 | pulse1 *= couplR; | |
537 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
538 | pulse1 = fMapA2->GetSignal(row,col); | |
539 | j1 = row; | |
540 | flag = 1; | |
541 | }else{ | |
542 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
543 | flag = 0; | |
544 | } // end if | |
545 | } while(flag == 0); | |
546 | // loop in column direction | |
547 | do{ | |
548 | j2 += isign; | |
549 | pulse2 *= couplC; | |
550 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
551 | pulse2 = fMapA2->GetSignal(row,col); | |
552 | j2 = col; | |
553 | flag = 1; | |
554 | }else{ | |
555 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
556 | flag = 0; | |
557 | } // end if | |
558 | } while(flag == 0); | |
559 | } // for isign | |
21b825a4 | 560 | } |
c7a4dac0 | 561 | //______________________________________________________________________ |
562 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
563 | // The pixels are fired if the energy deposited inside them is above | |
564 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
565 | // and stored in the file digitfilename. One also needs to write out | |
566 | // cases when there is only noise (nhits==0). | |
567 | ||
568 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
569 | ||
570 | Int_t digits[3]; | |
571 | Int_t tracks[3]; | |
572 | Int_t hits[3]; | |
573 | Float_t charges[3]; | |
574 | Int_t j1; | |
575 | ||
576 | for (Int_t r=1;r<=GetNPixelsZ();r++) { | |
577 | for (Int_t c=1;c<=GetNPixelsX();c++) { | |
578 | // check if the deposited energy in a pixel is above the | |
579 | // threshold | |
580 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
581 | if ( signal > GetThreshold()) { | |
582 | digits[0] = r-1; // digits starts from 0 | |
583 | digits[1] = c-1; // digits starts from 0 | |
584 | //digits[2] = 1; | |
585 | digits[2] = (Int_t) signal; // the signal is stored in | |
586 | // electrons | |
587 | for(j1=0;j1<3;j1++){ | |
588 | tracks[j1] = pList->GetTrack(r,c,j1); | |
589 | hits[j1] = pList->GetHit(r,c,j1); | |
21b825a4 | 590 | charges[j1] = 0; |
c7a4dac0 | 591 | } // end for j1 |
3a97c582 | 592 | Float_t phys = 0; |
c7a4dac0 | 593 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); |
3a97c582 | 594 | // cout << " CreateSPDDigit mod=" << fModule << " r,c=" << r; |
595 | // cout <<","<<c<< " sig=" << fpList->GetSignalOnly(r,c); | |
596 | // cout << " noise=" << fpList->GetNoise(r,c); | |
597 | // cout << " Msig="<< signal << " Thres=" << GetThreshold()<<endl; | |
c7a4dac0 | 598 | } // end if of threshold condition |
599 | } // for c | |
600 | }// end do on pixels | |
21b825a4 | 601 | } |
c7a4dac0 | 602 | //______________________________________________________________________ |
603 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
604 | // Set the electronic noise and threshold non-uniformities to all the | |
605 | // pixels in a detector. | |
606 | // The parameter fSigma is the squared sum of the sigma due to noise | |
607 | // and the sigma of the threshold distribution among pixels. | |
608 | // | |
609 | //Begin_Html | |
610 | /* | |
611 | <img src="picts/ITS/barimodel_1.gif"> | |
612 | </pre> | |
613 | <br clear=left> | |
614 | <font size=+2 color=red> | |
615 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
616 | </font> | |
617 | <pre> | |
618 | */ | |
619 | //End_Html | |
620 | Float_t thr=0.0,sigm=0.0; | |
621 | Double_t signal,sigma; | |
622 | Int_t iz,ix; | |
623 | ||
624 | GetThresholds(thr,sigm); | |
625 | sigma = (Double_t) sigm; | |
626 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
627 | for(ix=1;ix<=GetNPixelsX();ix++){ | |
628 | signal = sigma*gRandom->Gaus(); | |
629 | fMapA2->SetHit(iz,ix,signal); | |
630 | // insert in the label-signal-hit list the pixels fired | |
631 | // only by noise | |
632 | pList->AddNoise(iz,ix,module,signal); | |
633 | } // end of loop on pixels | |
21b825a4 | 634 | } // end of loop on pixels |
c7a4dac0 | 635 | } |
636 | //______________________________________________________________________ | |
637 | void AliITSsimulationSPD::SetMask() { | |
638 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
639 | // masked. When the database will be ready, the masked pixels | |
640 | // should be read from it. | |
641 | Double_t signal; | |
642 | Int_t iz,ix,im; | |
643 | Float_t totMask; | |
644 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
645 | // in this way we get the same set of random numbers for all runs. | |
646 | // This is a cluge for now. | |
647 | static TRandom *rnd = new TRandom(); | |
648 | ||
649 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
650 | for(im=1;im<totMask;im++){ | |
651 | do{ | |
652 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
653 | } while(ix<=0 || ix>GetNPixelsX()); | |
654 | do{ | |
655 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
656 | } while(iz<=0 || iz>GetNPixelsZ()); | |
657 | signal = -1.; | |
658 | fMapA2->SetHit(iz,ix,signal); | |
659 | } // end loop on masked pixels | |
660 | } | |
661 | //______________________________________________________________________ | |
21b825a4 | 662 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 663 | // Create Histograms |
664 | Int_t i; | |
21b825a4 | 665 | |
c7a4dac0 | 666 | fHis=new TObjArray(GetNPixelsZ()); |
667 | for(i=0;i<GetNPixelsZ();i++) { | |
668 | TString spdname("spd_"); | |
669 | Char_t candnum[4]; | |
670 | sprintf(candnum,"%d",i+1); | |
671 | spdname.Append(candnum); | |
672 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
673 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
674 | } // end for i | |
b0f5e3fc | 675 | } |
c7a4dac0 | 676 | //______________________________________________________________________ |
21b825a4 | 677 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 678 | // Reset histograms for this detector |
21b825a4 | 679 | Int_t i; |
b0f5e3fc | 680 | |
c7a4dac0 | 681 | for(i=0;i<GetNPixelsZ();i++ ) { |
682 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); | |
683 | } // end for i | |
684 | } | |
685 | //______________________________________________________________________ | |
686 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
687 | // Fills the Summable digits Tree | |
688 | Int_t i,ni,j,nj; | |
689 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
690 | ||
691 | pList->GetMaxMapIndex(ni,nj); | |
692 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
693 | if(pList->GetSignalOnly(i,j)>0.0){ | |
694 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
695 | // cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; | |
3a97c582 | 696 | // cout << " CreateSPDSDigit mod=" << fModule << " r,c="; |
697 | // cout << i <<","<< j << " sig=" << fpList->GetSignalOnly(i,j); | |
698 | // cout << " noise=" << fpList->GetNoise(i,j) <<endl; | |
c7a4dac0 | 699 | } // end if |
700 | } // end for i,j | |
701 | return; | |
702 | } | |
703 | //______________________________________________________________________ | |
704 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
705 | // Fills fMap2A from the pList of Summable digits | |
3a97c582 | 706 | Int_t ix,iz; |
c7a4dac0 | 707 | |
3a97c582 | 708 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
709 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 710 | return; |
b0f5e3fc | 711 | } |