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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 | //______________________________________________________________________ |
aacedc3e | 50 | AliITSsimulationSPD::AliITSsimulationSPD() : AliITSsimulation(), |
51 | fMapA2(0), | |
52 | fHis(0){ | |
c7a4dac0 | 53 | // Default constructor |
aacedc3e | 54 | // Inputs: |
55 | // none. | |
56 | // Outputs: | |
57 | // none. | |
58 | // Return: | |
59 | // A default constructed AliITSsimulationSPD class. | |
b0f5e3fc | 60 | } |
c7a4dac0 | 61 | //______________________________________________________________________ |
62 | AliITSsimulationSPD::AliITSsimulationSPD(AliITSsegmentation *seg, | |
aacedc3e | 63 | AliITSresponse *res): |
64 | AliITSsimulation(seg,res), | |
65 | fMapA2(0), | |
66 | fHis(0){ | |
c7a4dac0 | 67 | // Standard constructor |
aacedc3e | 68 | // Inputs: |
69 | // AliITSsegmentation *seg Segmentation class to be used | |
70 | // AliITSresonse *res Response class to be used | |
71 | // Outputs: | |
72 | // none. | |
73 | // Return: | |
74 | // A standard constructed AliITSsimulationSPD class. | |
75 | ||
76 | Init(); | |
77 | } | |
78 | //______________________________________________________________________ | |
79 | void AliITSsimulationSPD::Init() { | |
80 | // Initilizes the variables of AliITSsimulation SPD. | |
81 | // Inputs: | |
82 | // none. | |
83 | // Outputs: | |
84 | // none. | |
85 | // Return: | |
86 | // none. | |
c7a4dac0 | 87 | |
aacedc3e | 88 | fHis = 0; |
89 | if(fMapA2) delete fMapA2; | |
90 | fMapA2 = new AliITSMapA2(fSegmentation); | |
91 | if(fpList) delete fpList; | |
92 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
b0f5e3fc | 93 | } |
c7a4dac0 | 94 | //______________________________________________________________________ |
95 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
aacedc3e | 96 | AliITSresponseSPD *resp) { |
c7a4dac0 | 97 | // Initilizes the variables of AliITSsimulation SPD. |
aacedc3e | 98 | // Inputs: |
99 | // AliITSsegmentationSPD replacement segmentation class to be used | |
100 | // aliITSresponseSPD replacement response class to be used | |
101 | // Outputs: | |
102 | // none. | |
103 | // Return: | |
104 | // none. | |
c7a4dac0 | 105 | |
aacedc3e | 106 | if(fHis){ |
107 | fHis->Delete(); | |
108 | delete fHis; | |
109 | } // end if fHis | |
c7a4dac0 | 110 | fHis = 0; |
aacedc3e | 111 | if(fResponse) delete fResponse; |
c7a4dac0 | 112 | fResponse = resp; |
aacedc3e | 113 | if(fSegmentation) delete fSegmentation; |
c7a4dac0 | 114 | fSegmentation = seg; |
aacedc3e | 115 | if(fMapA2) delete fMapA2; |
3a97c582 | 116 | fMapA2 = new AliITSMapA2(fSegmentation); |
aacedc3e | 117 | if(fpList) delete fpList; |
3a97c582 | 118 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); |
c7a4dac0 | 119 | } |
120 | //______________________________________________________________________ | |
b0f5e3fc | 121 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 122 | // destructor |
aacedc3e | 123 | // Inputs: |
124 | // none. | |
125 | // Outputs: | |
126 | // none. | |
127 | // Return: | |
128 | // none. | |
b0f5e3fc | 129 | |
aacedc3e | 130 | if(fMapA2) delete fMapA2; |
b0f5e3fc | 131 | |
c7a4dac0 | 132 | if (fHis) { |
aacedc3e | 133 | fHis->Delete(); |
134 | delete fHis; | |
c7a4dac0 | 135 | } // end if |
b0f5e3fc | 136 | } |
c7a4dac0 | 137 | //______________________________________________________________________ |
ac74f489 | 138 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source) : |
139 | AliITSsimulation(source){ | |
c7a4dac0 | 140 | // Copy Constructor |
aacedc3e | 141 | // Inputs: |
142 | // none. | |
143 | // Outputs: | |
144 | // none. | |
145 | // Return: | |
146 | // A new AliITSsimulationSPD class with the same parameters as source. | |
c7a4dac0 | 147 | |
148 | if(&source == this) return; | |
149 | ||
150 | this->fMapA2 = source.fMapA2; | |
151 | this->fHis = source.fHis; | |
c7a4dac0 | 152 | return; |
b0f5e3fc | 153 | } |
c7a4dac0 | 154 | //______________________________________________________________________ |
155 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
156 | &source) { | |
157 | // Assignment operator | |
aacedc3e | 158 | // Inputs: |
159 | // none. | |
160 | // Outputs: | |
161 | // none. | |
162 | // Return: | |
163 | // A new AliITSsimulationSPD class with the same parameters as source. | |
c7a4dac0 | 164 | |
165 | if(&source == this) return *this; | |
166 | ||
167 | this->fMapA2 = source.fMapA2; | |
168 | this->fHis = source.fHis; | |
c7a4dac0 | 169 | return *this; |
3a97c582 | 170 | } |
171 | //______________________________________________________________________ | |
172 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
173 | // Creates maps to build the list of tracks for each sumable digit | |
174 | // Inputs: | |
175 | // Int_t module // Module number to be simulated | |
176 | // Int_t event // Event number to be simulated | |
177 | // Outputs: | |
178 | // none. | |
179 | // Return | |
180 | // none. | |
181 | ||
182 | fModule = module; | |
183 | fEvent = event; | |
184 | fMapA2->ClearMap(); | |
185 | fpList->ClearMap(); | |
186 | } | |
187 | //______________________________________________________________________ | |
188 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
189 | // Does the Sdigits to Digits work | |
190 | // Inputs: | |
191 | // none. | |
192 | // Outputs: | |
193 | // none. | |
194 | // Return: | |
195 | // none. | |
196 | ||
197 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 198 | } |
199 | //______________________________________________________________________ | |
200 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
201 | Int_t dummy1) { | |
202 | // Sum digitize module | |
aacedc3e | 203 | // Inputs: |
204 | // AliITSmodule *mod The module to be SDgitized | |
205 | // Int_t dummy0 Not used kept for general compatibility | |
206 | // Int_t dummy1 Not used kept for general compatibility | |
207 | // Outputs: | |
208 | // none. | |
209 | // Return: | |
210 | // none. | |
c7a4dac0 | 211 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. |
212 | Int_t number = 10000; | |
213 | Int_t *frowpixel = new Int_t[number]; | |
214 | Int_t *fcolpixel = new Int_t[number]; | |
215 | Double_t *fenepixel = new Double_t[number]; | |
216 | ||
ac74f489 | 217 | dummy0 = dummy1; // remove unsued variable warning. |
3a97c582 | 218 | fModule = mod->GetIndex(); |
219 | ||
c7a4dac0 | 220 | // Array of pointers to store the track index of the digits |
221 | // leave +1, otherwise pList crashes when col=256, row=192 | |
c7a4dac0 | 222 | |
3a97c582 | 223 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 224 | |
3a97c582 | 225 | WriteSDigits(fpList); |
c7a4dac0 | 226 | |
227 | // clean memory | |
228 | delete[] frowpixel; | |
229 | delete[] fcolpixel; | |
230 | delete[] fenepixel; | |
231 | fMapA2->ClearMap(); | |
3a97c582 | 232 | fpList->ClearMap(); |
c7a4dac0 | 233 | } |
234 | //______________________________________________________________________ | |
aacedc3e | 235 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t,Int_t) { |
c7a4dac0 | 236 | // digitize module. Also need to digitize modules with only noise. |
aacedc3e | 237 | // Inputs: |
238 | // AliITSmodule *mod The module to be SDgitized | |
239 | // Outputs: | |
240 | // none. | |
241 | // Return: | |
242 | // none. | |
b0f5e3fc | 243 | |
c7a4dac0 | 244 | Int_t number = 10000; |
245 | Int_t *frowpixel = new Int_t[number]; | |
246 | Int_t *fcolpixel = new Int_t[number]; | |
247 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 248 | |
c7a4dac0 | 249 | // Array of pointers to store the track index of the digits |
3a97c582 | 250 | // leave +1, otherwise pList crashes when col=256, row=192 |
251 | fModule = mod->GetIndex(); | |
c7a4dac0 | 252 | // noise setting |
3a97c582 | 253 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 254 | |
3a97c582 | 255 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 256 | |
c7a4dac0 | 257 | // apply mask to SPD module |
258 | SetMask(); | |
21b825a4 | 259 | |
3a97c582 | 260 | CreateDigit(fModule,fpList); |
b0f5e3fc | 261 | |
c7a4dac0 | 262 | // clean memory |
263 | delete[] frowpixel; | |
264 | delete[] fcolpixel; | |
265 | delete[] fenepixel; | |
266 | fMapA2->ClearMap(); | |
3a97c582 | 267 | fpList->ClearMap(); |
21b825a4 | 268 | } |
c7a4dac0 | 269 | //______________________________________________________________________ |
270 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
271 | // sum digits to Digits. | |
aacedc3e | 272 | // Inputs: |
273 | // AliITSmodule *mod The module to be SDgitized | |
274 | // AliITSpList *pList the array of SDigits | |
275 | // Outputs: | |
276 | // AliITSpList *pList the array of SDigits | |
277 | // Return: | |
278 | // none. | |
bb6b39bf | 279 | |
aacedc3e | 280 | if(GetDebug()){ |
281 | cout << "Entering AliITSsimulatinSPD::SDigitsToDigits for module="; | |
282 | cout << module << endl; | |
283 | } // end if GetDebug | |
3a97c582 | 284 | fModule = module; |
b0f5e3fc | 285 | |
c7a4dac0 | 286 | // noise setting |
287 | SetFluctuations(pList,module); | |
b0f5e3fc | 288 | |
3a97c582 | 289 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
290 | // noise is not doubled when calling FillMapFrompList. | |
291 | ||
292 | FillMapFrompList(pList); | |
293 | ||
c7a4dac0 | 294 | // apply mask to SPD module |
295 | SetMask(); | |
21b825a4 | 296 | |
c7a4dac0 | 297 | CreateDigit(module,pList); |
3a97c582 | 298 | |
299 | fMapA2->ClearMap(); | |
300 | pList->ClearMap(); | |
c7a4dac0 | 301 | } |
302 | //______________________________________________________________________ | |
303 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
304 | Int_t hit,Int_t mod,Double_t ene, | |
305 | AliITSpList *pList) { | |
306 | // updates the Map of signal, adding the energy (ene) released by | |
307 | // the current track | |
aacedc3e | 308 | // Inputs: |
309 | // Int_t row pixel row number | |
310 | // Int_t col pixel column number | |
311 | // Int_t trk track number which contributed | |
312 | // Int_t hit hit number which contributed | |
313 | // Int_t mod module number | |
314 | // Double_t ene the energy associated with this contribution | |
315 | // AliITSpList *pList the array of SDigits | |
316 | // Outputs: | |
317 | // AliITSpList *pList the array of SDigits | |
318 | // Return: | |
319 | // none. | |
c7a4dac0 | 320 | |
321 | fMapA2->AddSignal(row,col,ene); | |
322 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
323 | } | |
324 | //______________________________________________________________________ | |
325 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
326 | Double_t ene,AliITSpList *pList) { | |
327 | // updates the Map of noise, adding the energy (ene) give my noise | |
aacedc3e | 328 | // Inputs: |
329 | // Int_t row pixel row number | |
330 | // Int_t col pixel column number | |
331 | // Int_t mod module number | |
332 | // Double_t ene the energy associated with this contribution | |
333 | // AliITSpList *pList the array of SDigits | |
334 | // Outputs: | |
335 | // AliITSpList *pList the array of SDigits | |
336 | // Return: | |
337 | // none. | |
21b825a4 | 338 | |
c7a4dac0 | 339 | fMapA2->AddSignal(row,col,ene); |
340 | pList->AddNoise(row,col,mod,ene); | |
341 | } | |
342 | //______________________________________________________________________ | |
343 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
344 | Int_t *frowpixel,Int_t *fcolpixel, | |
345 | Double_t *fenepixel, | |
346 | AliITSpList *pList) { | |
347 | // Loops over all hits to produce Analog/floting point digits. This | |
348 | // is also the first task in producing standard digits. | |
aacedc3e | 349 | // Inputs: |
350 | // AliITSmodule *mod module class | |
351 | // Int_t *frowpixel array of pixel rows | |
352 | // Int_t *fcolpixel array of pixel columns | |
353 | // Double_t *fenepiexel array of pixel energies | |
354 | // AliITSpList *pList the array of SDigits | |
355 | // Outputs: | |
356 | // AliITSpList *pList the array of SDigits | |
357 | // Return: | |
358 | // none. | |
21b825a4 | 359 | |
c7a4dac0 | 360 | // loop over hits in the module |
361 | Int_t hitpos,nhits = mod->GetNhits(); | |
362 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
aacedc3e | 363 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); |
c7a4dac0 | 364 | }// end loop over digits |
365 | } | |
366 | //______________________________________________________________________ | |
367 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
368 | Int_t *frowpixel,Int_t *fcolpixel, | |
369 | Double_t *fenepixel,AliITSpList *pList) { | |
370 | // Steering function to determine the digits associated to a given | |
371 | // hit (hitpos) | |
372 | // The digits are created by charge sharing (ChargeSharing) and by | |
373 | // capacitive coupling (SetCoupling). At all the created digits is | |
374 | // associated the track number of the hit (ntrack) | |
aacedc3e | 375 | // Inputs: |
376 | // AliITSmodule *mod module class | |
377 | // Int_t hitpos hit index value | |
378 | // Int_t *frowpixel array of pixel rows | |
379 | // Int_t *fcolpixel array of pixel columns | |
380 | // Double_t *fenepiexel array of pixel energies | |
381 | // AliITSpList *pList the array of SDigits | |
382 | // Outputs: | |
383 | // AliITSpList *pList the array of SDigits | |
384 | // Return: | |
385 | // none. | |
c7a4dac0 | 386 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; |
387 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
388 | Int_t ntrack; | |
389 | Double_t ene=0.0,etot=0.0; | |
390 | const Float_t kconv = 10000.; // cm -> microns | |
391 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
392 | ||
393 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
394 | ||
395 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
396 | // positions shifted and converted in microns | |
397 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
398 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
399 | // positions shifted and converted in microns | |
400 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
401 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
402 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
403 | Int_t module = mod->GetIndex(); | |
404 | ||
405 | // to account for the effective sensitive area | |
406 | // introduced in geometry | |
407 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
408 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
409 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
410 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
411 | ||
412 | //Get the col and row number starting from 1 | |
413 | // the x direction is not inverted for the second layer!!! | |
414 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
415 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
416 | ||
417 | // to account for unexpected equal entrance and | |
418 | // exit coordinates | |
0fee5d51 | 419 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
420 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 421 | |
422 | if ((r1==r2) && (c1==c2)){ | |
aacedc3e | 423 | // no charge sharing |
424 | npixel = 1; | |
425 | frowpixel[npixel-1] = r1; | |
426 | fcolpixel[npixel-1] = c1; | |
427 | fenepixel[npixel-1] = etot; | |
c7a4dac0 | 428 | } else { |
aacedc3e | 429 | // charge sharing |
430 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
431 | npixel,frowpixel,fcolpixel,fenepixel); | |
c7a4dac0 | 432 | } // end if r1==r2 && c1==c2. |
433 | ||
434 | for (Int_t npix=0;npix<npixel;npix++){ | |
aacedc3e | 435 | row = frowpixel[npix]; |
436 | col = fcolpixel[npix]; | |
437 | ene = fenepixel[npix]; | |
438 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
439 | // Starting capacitive coupling effect | |
440 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
c7a4dac0 | 441 | } // end for npix |
442 | } | |
443 | //______________________________________________________________________ | |
444 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
445 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
446 | Int_t r2,Float_t etot, | |
447 | Int_t &npixel,Int_t *frowpixel, | |
448 | Int_t *fcolpixel,Double_t *fenepixel){ | |
449 | // Take into account the geometrical charge sharing when the track | |
450 | // crosses more than one pixel. | |
aacedc3e | 451 | // Inputs: |
452 | // Float_t x1l | |
453 | // Float_t z1l | |
454 | // Float_t x2l | |
455 | // Float_t z2l | |
456 | // Int_t c1 | |
457 | // Int_t r1 | |
458 | // Int_t c2 | |
459 | // Int_t r2 | |
460 | // Float_t etot | |
461 | // Int_t &npixel | |
462 | // Int_t *frowpixel array of pixel rows | |
463 | // Int_t *fcolpixel array of pixel columns | |
464 | // Double_t *fenepiexel array of pixel energies | |
465 | // Outputs: | |
466 | // Int_t &npixel | |
467 | // Return: | |
468 | // none. | |
c7a4dac0 | 469 | // |
470 | //Begin_Html | |
21b825a4 | 471 | /* |
c7a4dac0 | 472 | <img src="picts/ITS/barimodel_2.gif"> |
473 | </pre> | |
474 | <br clear=left> | |
475 | <font size=+2 color=red> | |
476 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
477 | </font> | |
478 | <pre> | |
21b825a4 | 479 | */ |
c7a4dac0 | 480 | //End_Html |
ee86d557 | 481 | //Float_t dm; |
482 | Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc; | |
c7a4dac0 | 483 | Float_t refn=0.; |
484 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
485 | Int_t dirx,dirz,rb,cb; | |
486 | Int_t flag,flagrow,flagcol; | |
487 | Double_t epar; | |
488 | ||
489 | npixel = 0; | |
490 | xa = x1l; | |
491 | za = z1l; | |
cf6105a4 | 492 | // dx = x1l-x2l; |
493 | // dz = z1l-z2l; | |
494 | dx = x2l-x1l; | |
495 | dz = z2l-z1l; | |
c7a4dac0 | 496 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 497 | if (dtot==0.0) dtot = 0.01; |
498 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
499 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 500 | |
501 | // calculate the x coordinate of the pixel in the next column | |
502 | // and the z coordinate of the pixel in the next row | |
503 | Float_t xpos, zpos; | |
504 | ||
505 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
506 | ||
507 | Float_t xsize = fSegmentation->Dpx(0); | |
508 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 509 | |
c7a4dac0 | 510 | if (dirx == 1) refr = xpos+xsize/2.; |
511 | else refr = xpos-xsize/2.; | |
512 | ||
513 | if (dirz == 1) refn = zpos+zsize/2.; | |
514 | else refn = zpos-zsize/2.; | |
515 | ||
516 | flag = 0; | |
517 | flagrow = 0; | |
518 | flagcol = 0; | |
519 | do{ | |
aacedc3e | 520 | // calculate the x coordinate of the intersection with the pixel |
521 | // in the next cell in row direction | |
522 | if(dz!=0) | |
523 | refm = dx*((refn - z1l)/dz) + x1l; | |
524 | else | |
525 | refm = refr+dirx*xsize; | |
526 | ||
527 | // calculate the z coordinate of the intersection with the pixel | |
528 | // in the next cell in column direction | |
529 | if (dx!=0) | |
530 | refc = dz*((refr - x1l)/dx) + z1l; | |
531 | else | |
532 | refc = refn+dirz*zsize; | |
533 | ||
534 | arefm = refm * dirx; | |
535 | arefr = refr * dirx; | |
536 | arefn = refn * dirz; | |
537 | arefc = refc * dirz; | |
538 | ||
539 | if ((arefm < arefr) && (arefn < arefc)){ | |
540 | // the track goes in the pixel in the next cell in row direction | |
541 | xb = refm; | |
542 | zb = refn; | |
543 | cb = c1; | |
544 | rb = r1 + dirz; | |
545 | azb = zb * dirz; | |
546 | az2l = z2l * dirz; | |
547 | if (rb == r2) flagrow=1; | |
548 | if (azb > az2l) { | |
549 | zb = z2l; | |
550 | xb = x2l; | |
551 | } // end if | |
552 | // shift to the pixel in the next cell in row direction | |
553 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
554 | //to account for cell at the borders of the detector | |
555 | if(zsizeNext==0) zsizeNext = zsize; | |
556 | refn += zsizeNext*dirz; | |
557 | }else { | |
558 | // the track goes in the pixel in the next cell in column direction | |
559 | xb = refr; | |
560 | zb = refc; | |
561 | cb = c1 + dirx; | |
562 | rb = r1; | |
563 | axb = xb * dirx; | |
564 | ax2l = x2l * dirx; | |
565 | if (cb == c2) flagcol=1; | |
566 | if (axb > ax2l) { | |
567 | zb = z2l; | |
568 | xb = x2l; | |
569 | } // end ifaxb > ax2l | |
570 | ||
571 | // shift to the pixel in the next cell in column direction | |
572 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
573 | //to account for cell at the borders of the detector | |
574 | if(xsizeNext==0) xsizeNext = xsize; | |
575 | refr += xsizeNext*dirx; | |
576 | } // end if (arefm < arefr) && (arefn < arefc) | |
577 | ||
578 | //calculate the energy lost in the crossed pixel | |
579 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
580 | epar = etot*(epar/dtot); | |
581 | ||
582 | //store row, column and energy lost in the crossed pixel | |
583 | frowpixel[npixel] = r1; | |
584 | fcolpixel[npixel] = c1; | |
585 | fenepixel[npixel] = epar; | |
586 | npixel++; | |
587 | ||
588 | // the exit point of the track is reached | |
589 | if (epar == 0) flag = 1; | |
590 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
591 | if (flag!=1) { | |
592 | r1 = rb; | |
593 | c1 = cb; | |
594 | xa = xb; | |
595 | za = zb; | |
596 | } // end if flag!=1 | |
c7a4dac0 | 597 | } while (flag==0); |
21b825a4 | 598 | } |
c7a4dac0 | 599 | //______________________________________________________________________ |
21b825a4 | 600 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 601 | Int_t idhit,Int_t module, |
602 | AliITSpList *pList) { | |
603 | // Take into account the coupling between adiacent pixels. | |
f8d9a5b8 | 604 | // The parameters probcol and probrow are the probability of the |
605 | // signal in one pixel shared in the two adjacent pixels along | |
606 | // the column and row direction, respectively. | |
aacedc3e | 607 | // Inputs: |
608 | // Int_t row pixel row number | |
609 | // Int_t col pixel column number | |
610 | // Int_t ntrack track number of track contributing to this signal | |
611 | // Int_t idhit hit number of hit contributing to this signal | |
612 | // Int_t module module number | |
613 | // AliITSpList *pList the array of SDigits | |
614 | // Outputs: | |
615 | // AliITSpList *pList the array of SDigits | |
616 | // Return: | |
617 | // none. | |
f8d9a5b8 | 618 | // |
619 | //Begin_Html | |
620 | /* | |
621 | <img src="picts/ITS/barimodel_3.gif"> | |
622 | </pre> | |
623 | <br clear=left> | |
624 | <font size=+2 color=red> | |
625 | <a href="mailto:tiziano.virgili@cern.ch"></a>. | |
626 | </font> | |
627 | <pre> | |
628 | */ | |
629 | //End_Html | |
630 | Int_t j1,j2,flag=0; | |
631 | Double_t pulse1,pulse2; | |
aacedc3e | 632 | Double_t couplR=0.0,couplC=0.0; |
f8d9a5b8 | 633 | Double_t xr=0.; |
634 | ||
635 | GetCouplings(couplR,couplC); | |
636 | j1 = row; | |
637 | j2 = col; | |
638 | pulse1 = fMapA2->GetSignal(row,col); | |
639 | pulse2 = pulse1; | |
640 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 641 | do{ |
642 | j1 += isign; | |
643 | // pulse1 *= couplR; | |
644 | xr = gRandom->Rndm(); | |
645 | //if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
646 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){ | |
647 | j1 = row; | |
648 | flag = 1; | |
649 | }else{ | |
650 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
651 | // flag = 0; | |
652 | flag = 1; // only first next!! | |
653 | } // end if | |
654 | } while(flag == 0); | |
655 | // loop in column direction | |
656 | do{ | |
657 | j2 += isign; | |
658 | // pulse2 *= couplC; | |
659 | xr = gRandom->Rndm(); | |
660 | //if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
661 | if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){ | |
662 | j2 = col; | |
663 | flag = 1; | |
664 | }else{ | |
665 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
666 | // flag = 0; | |
667 | flag = 1; // only first next!! | |
668 | } // end if | |
669 | } while(flag == 0); | |
f8d9a5b8 | 670 | } // for isign |
671 | } | |
672 | //______________________________________________________________________ | |
673 | void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack, | |
674 | Int_t idhit,Int_t module, | |
675 | AliITSpList *pList) { | |
676 | // Take into account the coupling between adiacent pixels. | |
c7a4dac0 | 677 | // The parameters probcol and probrow are the fractions of the |
678 | // signal in one pixel shared in the two adjacent pixels along | |
679 | // the column and row direction, respectively. | |
aacedc3e | 680 | // Inputs: |
681 | // Int_t row pixel row number | |
682 | // Int_t col pixel column number | |
683 | // Int_t ntrack track number of track contributing to this pixel | |
684 | // Int_t idhit hit index number of hit contributing to this pixel | |
685 | // Int_t module module number | |
686 | // AliITSpList *pList the array of SDigits | |
687 | // Outputs: | |
688 | // AliITSpList *pList the array of SDigits | |
689 | // Return: | |
690 | // none. | |
c7a4dac0 | 691 | // |
692 | //Begin_Html | |
693 | /* | |
694 | <img src="picts/ITS/barimodel_3.gif"> | |
695 | </pre> | |
696 | <br clear=left> | |
697 | <font size=+2 color=red> | |
698 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
699 | </font> | |
700 | <pre> | |
701 | */ | |
702 | //End_Html | |
703 | Int_t j1,j2,flag=0; | |
704 | Double_t pulse1,pulse2; | |
aacedc3e | 705 | Double_t couplR=0.0,couplC=0.0; |
c7a4dac0 | 706 | |
707 | GetCouplings(couplR,couplC); | |
708 | j1 = row; | |
709 | j2 = col; | |
710 | pulse1 = fMapA2->GetSignal(row,col); | |
711 | pulse2 = pulse1; | |
712 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 713 | do{ |
714 | j1 += isign; | |
715 | pulse1 *= couplR; | |
716 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
717 | pulse1 = fMapA2->GetSignal(row,col); | |
718 | j1 = row; | |
719 | flag = 1; | |
720 | }else{ | |
721 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
722 | flag = 0; | |
723 | } // end if | |
724 | } while(flag == 0); | |
725 | // loop in column direction | |
726 | do{ | |
727 | j2 += isign; | |
728 | pulse2 *= couplC; | |
729 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
730 | pulse2 = fMapA2->GetSignal(row,col); | |
731 | j2 = col; | |
732 | flag = 1; | |
733 | }else{ | |
734 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
735 | flag = 0; | |
736 | } // end if | |
737 | } while(flag == 0); | |
c7a4dac0 | 738 | } // for isign |
21b825a4 | 739 | } |
c7a4dac0 | 740 | //______________________________________________________________________ |
741 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
742 | // The pixels are fired if the energy deposited inside them is above | |
743 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
744 | // and stored in the file digitfilename. One also needs to write out | |
745 | // cases when there is only noise (nhits==0). | |
aacedc3e | 746 | // Inputs: |
747 | // Int_t module | |
748 | // AliITSpList *pList the array of SDigits | |
749 | // Outputs: | |
750 | // AliITSpList *pList the array of SDigits | |
751 | // Return: | |
752 | // none. | |
c7a4dac0 | 753 | |
754 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
755 | ||
ee86d557 | 756 | Int_t size = AliITSdigitSPD::GetNTracks(); |
5c5273c2 | 757 | Int_t * digits = new Int_t[size]; |
758 | Int_t * tracks = new Int_t[size]; | |
759 | Int_t * hits = new Int_t[size]; | |
760 | Float_t * charges = new Float_t[size]; | |
c7a4dac0 | 761 | Int_t j1; |
762 | ||
ac74f489 | 763 | module=0; // remove unused variable warning. |
f8d9a5b8 | 764 | for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;} |
c7a4dac0 | 765 | for (Int_t r=1;r<=GetNPixelsZ();r++) { |
aacedc3e | 766 | for (Int_t c=1;c<=GetNPixelsX();c++) { |
767 | // check if the deposited energy in a pixel is above the | |
768 | // threshold | |
769 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
770 | if ( signal > GetThreshold()) { | |
771 | digits[0] = r-1; // digits starts from 0 | |
772 | digits[1] = c-1; // digits starts from 0 | |
773 | //digits[2] = 1; | |
774 | digits[2] = (Int_t) signal; // the signal is stored in | |
c7a4dac0 | 775 | // electrons |
aacedc3e | 776 | for(j1=0;j1<size;j1++){ |
777 | if(j1<pList->GetNEnteries()){ | |
778 | tracks[j1] = pList->GetTrack(r,c,j1); | |
779 | hits[j1] = pList->GetHit(r,c,j1); | |
780 | //}else{ | |
781 | //tracks[j1] = -3; | |
782 | //hits[j1] = -1; | |
783 | } // end if | |
784 | //charges[j1] = 0; | |
785 | } // end for j1 | |
786 | Float_t phys = 0; | |
787 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); | |
788 | if(GetDebug()){ | |
789 | cout << " CreateSPDDigit mod=" << fModule << " r,c=" << r; | |
790 | cout <<","<<c<< " sig=" << fpList->GetSignalOnly(r,c); | |
791 | cout << " noise=" << fpList->GetNoise(r,c); | |
792 | cout << " Msig="<< signal << " Thres=" << GetThreshold(); | |
793 | cout <<endl; | |
794 | }// end if GetDebug | |
795 | } // end if of threshold condition | |
796 | } // for c | |
c7a4dac0 | 797 | }// end do on pixels |
5c5273c2 | 798 | delete [] digits; |
799 | delete [] tracks; | |
800 | delete [] hits; | |
801 | delete [] charges; | |
21b825a4 | 802 | } |
c7a4dac0 | 803 | //______________________________________________________________________ |
804 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
805 | // Set the electronic noise and threshold non-uniformities to all the | |
806 | // pixels in a detector. | |
807 | // The parameter fSigma is the squared sum of the sigma due to noise | |
808 | // and the sigma of the threshold distribution among pixels. | |
aacedc3e | 809 | // Inputs: |
810 | // Int_t module modulel number | |
811 | // AliITSpList *pList the array of SDigits | |
812 | // Outputs: | |
813 | // AliITSpList *pList the array of SDigits | |
814 | // Return: | |
815 | // none. | |
c7a4dac0 | 816 | // |
817 | //Begin_Html | |
818 | /* | |
819 | <img src="picts/ITS/barimodel_1.gif"> | |
820 | </pre> | |
821 | <br clear=left> | |
822 | <font size=+2 color=red> | |
823 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
824 | </font> | |
825 | <pre> | |
826 | */ | |
827 | //End_Html | |
aacedc3e | 828 | Double_t thr=0.0,sigm=0.0; |
c7a4dac0 | 829 | Double_t signal,sigma; |
830 | Int_t iz,ix; | |
831 | ||
832 | GetThresholds(thr,sigm); | |
833 | sigma = (Double_t) sigm; | |
834 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
aacedc3e | 835 | for(ix=1;ix<=GetNPixelsX();ix++){ |
836 | signal = sigma*gRandom->Gaus(); | |
837 | fMapA2->SetHit(iz,ix,signal); | |
838 | // insert in the label-signal-hit list the pixels fired | |
839 | // only by noise | |
840 | pList->AddNoise(iz,ix,module,signal); | |
841 | } // end of loop on pixels | |
21b825a4 | 842 | } // end of loop on pixels |
c7a4dac0 | 843 | } |
844 | //______________________________________________________________________ | |
845 | void AliITSsimulationSPD::SetMask() { | |
846 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
847 | // masked. When the database will be ready, the masked pixels | |
848 | // should be read from it. | |
aacedc3e | 849 | // Inputs: |
850 | // none. | |
851 | // Outputs: | |
852 | // none. | |
853 | // Return: | |
854 | // none. | |
c7a4dac0 | 855 | Double_t signal; |
856 | Int_t iz,ix,im; | |
857 | Float_t totMask; | |
858 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
859 | // in this way we get the same set of random numbers for all runs. | |
860 | // This is a cluge for now. | |
861 | static TRandom *rnd = new TRandom(); | |
862 | ||
863 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
864 | for(im=1;im<totMask;im++){ | |
aacedc3e | 865 | do{ |
866 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
867 | } while(ix<=0 || ix>GetNPixelsX()); | |
868 | do{ | |
869 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
870 | } while(iz<=0 || iz>GetNPixelsZ()); | |
871 | signal = -1.; | |
872 | fMapA2->SetHit(iz,ix,signal); | |
c7a4dac0 | 873 | } // end loop on masked pixels |
874 | } | |
875 | //______________________________________________________________________ | |
21b825a4 | 876 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 877 | // Create Histograms |
aacedc3e | 878 | // Inputs: |
879 | // none. | |
880 | // Outputs: | |
881 | // none. | |
882 | // Return: | |
883 | // none. | |
c7a4dac0 | 884 | Int_t i; |
21b825a4 | 885 | |
c7a4dac0 | 886 | fHis=new TObjArray(GetNPixelsZ()); |
887 | for(i=0;i<GetNPixelsZ();i++) { | |
aacedc3e | 888 | TString spdname("spd_"); |
889 | Char_t candnum[4]; | |
890 | sprintf(candnum,"%d",i+1); | |
891 | spdname.Append(candnum); | |
892 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
893 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
c7a4dac0 | 894 | } // end for i |
b0f5e3fc | 895 | } |
c7a4dac0 | 896 | //______________________________________________________________________ |
21b825a4 | 897 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 898 | // Reset histograms for this detector |
aacedc3e | 899 | // Inputs: |
900 | // none. | |
901 | // Outputs: | |
902 | // none. | |
903 | // Return: | |
904 | // none. | |
21b825a4 | 905 | Int_t i; |
b0f5e3fc | 906 | |
c7a4dac0 | 907 | for(i=0;i<GetNPixelsZ();i++ ) { |
aacedc3e | 908 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); |
c7a4dac0 | 909 | } // end for i |
910 | } | |
911 | //______________________________________________________________________ | |
912 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
913 | // Fills the Summable digits Tree | |
aacedc3e | 914 | // Inputs: |
915 | // AliITSpList *pList the array of SDigits | |
916 | // Outputs: | |
917 | // AliITSpList *pList the array of SDigits | |
918 | // Return: | |
919 | // none. | |
c7a4dac0 | 920 | Int_t i,ni,j,nj; |
921 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
922 | ||
923 | pList->GetMaxMapIndex(ni,nj); | |
924 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
aacedc3e | 925 | if(pList->GetSignalOnly(i,j)>0.0){ |
926 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
927 | if(GetDebug()){ | |
928 | cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; | |
929 | cout << " CreateSPDSDigit mod=" << fModule << " r,c="; | |
930 | cout << i <<","<< j << " sig=" << fpList->GetSignalOnly(i,j); | |
931 | cout << " noise=" << fpList->GetNoise(i,j) <<endl; | |
932 | } // end if GetDebug | |
933 | } // end if | |
c7a4dac0 | 934 | } // end for i,j |
935 | return; | |
936 | } | |
937 | //______________________________________________________________________ | |
938 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
939 | // Fills fMap2A from the pList of Summable digits | |
aacedc3e | 940 | // Inputs: |
941 | // AliITSpList *pList the array of SDigits | |
942 | // Outputs: | |
943 | // AliITSpList *pList the array of SDigits | |
944 | // Return: | |
945 | // none. | |
3a97c582 | 946 | Int_t ix,iz; |
c7a4dac0 | 947 | |
3a97c582 | 948 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
949 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 950 | return; |
b0f5e3fc | 951 | } |