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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 | } |
d2f55a22 | 171 | //______________________________________________________________________ |
172 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulation | |
173 | &source) { | |
174 | // Assignment operator | |
175 | // Inputs: | |
176 | // none. | |
177 | // Outputs: | |
178 | // none. | |
179 | // Return: | |
180 | // A new AliITSsimulationSPD class with the same parameters as source. | |
181 | ||
182 | if(&source == this) return *this; | |
183 | Error("AliITSsimulationSPD","Not allowed to make a = with " | |
184 | "AliITSsimulationSPD Using default creater instead"); | |
185 | ||
186 | return *this; | |
187 | } | |
188 | ||
3a97c582 | 189 | //______________________________________________________________________ |
190 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
191 | // Creates maps to build the list of tracks for each sumable digit | |
192 | // Inputs: | |
193 | // Int_t module // Module number to be simulated | |
194 | // Int_t event // Event number to be simulated | |
195 | // Outputs: | |
196 | // none. | |
197 | // Return | |
198 | // none. | |
199 | ||
200 | fModule = module; | |
201 | fEvent = event; | |
202 | fMapA2->ClearMap(); | |
203 | fpList->ClearMap(); | |
204 | } | |
205 | //______________________________________________________________________ | |
206 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
207 | // Does the Sdigits to Digits work | |
208 | // Inputs: | |
209 | // none. | |
210 | // Outputs: | |
211 | // none. | |
212 | // Return: | |
213 | // none. | |
214 | ||
215 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 216 | } |
217 | //______________________________________________________________________ | |
218 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
219 | Int_t dummy1) { | |
220 | // Sum digitize module | |
aacedc3e | 221 | // Inputs: |
222 | // AliITSmodule *mod The module to be SDgitized | |
223 | // Int_t dummy0 Not used kept for general compatibility | |
224 | // Int_t dummy1 Not used kept for general compatibility | |
225 | // Outputs: | |
226 | // none. | |
227 | // Return: | |
228 | // none. | |
c7a4dac0 | 229 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. |
230 | Int_t number = 10000; | |
231 | Int_t *frowpixel = new Int_t[number]; | |
232 | Int_t *fcolpixel = new Int_t[number]; | |
233 | Double_t *fenepixel = new Double_t[number]; | |
234 | ||
ac74f489 | 235 | dummy0 = dummy1; // remove unsued variable warning. |
3a97c582 | 236 | fModule = mod->GetIndex(); |
237 | ||
c7a4dac0 | 238 | // Array of pointers to store the track index of the digits |
239 | // leave +1, otherwise pList crashes when col=256, row=192 | |
c7a4dac0 | 240 | |
3a97c582 | 241 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 242 | |
3a97c582 | 243 | WriteSDigits(fpList); |
c7a4dac0 | 244 | |
245 | // clean memory | |
246 | delete[] frowpixel; | |
247 | delete[] fcolpixel; | |
248 | delete[] fenepixel; | |
249 | fMapA2->ClearMap(); | |
3a97c582 | 250 | fpList->ClearMap(); |
c7a4dac0 | 251 | } |
252 | //______________________________________________________________________ | |
aacedc3e | 253 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t,Int_t) { |
c7a4dac0 | 254 | // digitize module. Also need to digitize modules with only noise. |
aacedc3e | 255 | // Inputs: |
256 | // AliITSmodule *mod The module to be SDgitized | |
257 | // Outputs: | |
258 | // none. | |
259 | // Return: | |
260 | // none. | |
b0f5e3fc | 261 | |
c7a4dac0 | 262 | Int_t number = 10000; |
263 | Int_t *frowpixel = new Int_t[number]; | |
264 | Int_t *fcolpixel = new Int_t[number]; | |
265 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 266 | |
c7a4dac0 | 267 | // Array of pointers to store the track index of the digits |
3a97c582 | 268 | // leave +1, otherwise pList crashes when col=256, row=192 |
269 | fModule = mod->GetIndex(); | |
c7a4dac0 | 270 | // noise setting |
3a97c582 | 271 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 272 | |
3a97c582 | 273 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 274 | |
c7a4dac0 | 275 | // apply mask to SPD module |
276 | SetMask(); | |
21b825a4 | 277 | |
3a97c582 | 278 | CreateDigit(fModule,fpList); |
b0f5e3fc | 279 | |
c7a4dac0 | 280 | // clean memory |
281 | delete[] frowpixel; | |
282 | delete[] fcolpixel; | |
283 | delete[] fenepixel; | |
284 | fMapA2->ClearMap(); | |
3a97c582 | 285 | fpList->ClearMap(); |
21b825a4 | 286 | } |
c7a4dac0 | 287 | //______________________________________________________________________ |
288 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
289 | // sum digits to Digits. | |
aacedc3e | 290 | // Inputs: |
291 | // AliITSmodule *mod The module to be SDgitized | |
292 | // AliITSpList *pList the array of SDigits | |
293 | // Outputs: | |
294 | // AliITSpList *pList the array of SDigits | |
295 | // Return: | |
296 | // none. | |
bb6b39bf | 297 | |
aacedc3e | 298 | if(GetDebug()){ |
299 | cout << "Entering AliITSsimulatinSPD::SDigitsToDigits for module="; | |
300 | cout << module << endl; | |
301 | } // end if GetDebug | |
3a97c582 | 302 | fModule = module; |
b0f5e3fc | 303 | |
c7a4dac0 | 304 | // noise setting |
305 | SetFluctuations(pList,module); | |
b0f5e3fc | 306 | |
3a97c582 | 307 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
308 | // noise is not doubled when calling FillMapFrompList. | |
309 | ||
310 | FillMapFrompList(pList); | |
311 | ||
c7a4dac0 | 312 | // apply mask to SPD module |
313 | SetMask(); | |
21b825a4 | 314 | |
c7a4dac0 | 315 | CreateDigit(module,pList); |
3a97c582 | 316 | |
317 | fMapA2->ClearMap(); | |
318 | pList->ClearMap(); | |
c7a4dac0 | 319 | } |
320 | //______________________________________________________________________ | |
321 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
322 | Int_t hit,Int_t mod,Double_t ene, | |
323 | AliITSpList *pList) { | |
324 | // updates the Map of signal, adding the energy (ene) released by | |
325 | // the current track | |
aacedc3e | 326 | // Inputs: |
327 | // Int_t row pixel row number | |
328 | // Int_t col pixel column number | |
329 | // Int_t trk track number which contributed | |
330 | // Int_t hit hit number which contributed | |
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. | |
c7a4dac0 | 338 | |
339 | fMapA2->AddSignal(row,col,ene); | |
340 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
341 | } | |
342 | //______________________________________________________________________ | |
343 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
344 | Double_t ene,AliITSpList *pList) { | |
345 | // updates the Map of noise, adding the energy (ene) give my noise | |
aacedc3e | 346 | // Inputs: |
347 | // Int_t row pixel row number | |
348 | // Int_t col pixel column number | |
349 | // Int_t mod module number | |
350 | // Double_t ene the energy associated with this contribution | |
351 | // AliITSpList *pList the array of SDigits | |
352 | // Outputs: | |
353 | // AliITSpList *pList the array of SDigits | |
354 | // Return: | |
355 | // none. | |
21b825a4 | 356 | |
c7a4dac0 | 357 | fMapA2->AddSignal(row,col,ene); |
358 | pList->AddNoise(row,col,mod,ene); | |
359 | } | |
360 | //______________________________________________________________________ | |
361 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
362 | Int_t *frowpixel,Int_t *fcolpixel, | |
363 | Double_t *fenepixel, | |
364 | AliITSpList *pList) { | |
365 | // Loops over all hits to produce Analog/floting point digits. This | |
366 | // is also the first task in producing standard digits. | |
aacedc3e | 367 | // Inputs: |
368 | // AliITSmodule *mod module class | |
369 | // Int_t *frowpixel array of pixel rows | |
370 | // Int_t *fcolpixel array of pixel columns | |
371 | // Double_t *fenepiexel array of pixel energies | |
372 | // AliITSpList *pList the array of SDigits | |
373 | // Outputs: | |
374 | // AliITSpList *pList the array of SDigits | |
375 | // Return: | |
376 | // none. | |
21b825a4 | 377 | |
c7a4dac0 | 378 | // loop over hits in the module |
379 | Int_t hitpos,nhits = mod->GetNhits(); | |
380 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
aacedc3e | 381 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); |
c7a4dac0 | 382 | }// end loop over digits |
383 | } | |
384 | //______________________________________________________________________ | |
385 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
386 | Int_t *frowpixel,Int_t *fcolpixel, | |
387 | Double_t *fenepixel,AliITSpList *pList) { | |
388 | // Steering function to determine the digits associated to a given | |
389 | // hit (hitpos) | |
390 | // The digits are created by charge sharing (ChargeSharing) and by | |
391 | // capacitive coupling (SetCoupling). At all the created digits is | |
392 | // associated the track number of the hit (ntrack) | |
aacedc3e | 393 | // Inputs: |
394 | // AliITSmodule *mod module class | |
395 | // Int_t hitpos hit index value | |
396 | // Int_t *frowpixel array of pixel rows | |
397 | // Int_t *fcolpixel array of pixel columns | |
398 | // Double_t *fenepiexel array of pixel energies | |
399 | // AliITSpList *pList the array of SDigits | |
400 | // Outputs: | |
401 | // AliITSpList *pList the array of SDigits | |
402 | // Return: | |
403 | // none. | |
c7a4dac0 | 404 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; |
405 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
406 | Int_t ntrack; | |
407 | Double_t ene=0.0,etot=0.0; | |
408 | const Float_t kconv = 10000.; // cm -> microns | |
409 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
410 | ||
411 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
412 | ||
413 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
414 | // positions shifted and converted in microns | |
415 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
416 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
417 | // positions shifted and converted in microns | |
418 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
419 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
420 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
421 | Int_t module = mod->GetIndex(); | |
422 | ||
423 | // to account for the effective sensitive area | |
424 | // introduced in geometry | |
425 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
426 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
427 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
428 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
429 | ||
430 | //Get the col and row number starting from 1 | |
431 | // the x direction is not inverted for the second layer!!! | |
432 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
433 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
434 | ||
435 | // to account for unexpected equal entrance and | |
436 | // exit coordinates | |
0fee5d51 | 437 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
438 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 439 | |
440 | if ((r1==r2) && (c1==c2)){ | |
aacedc3e | 441 | // no charge sharing |
442 | npixel = 1; | |
443 | frowpixel[npixel-1] = r1; | |
444 | fcolpixel[npixel-1] = c1; | |
445 | fenepixel[npixel-1] = etot; | |
c7a4dac0 | 446 | } else { |
aacedc3e | 447 | // charge sharing |
448 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
449 | npixel,frowpixel,fcolpixel,fenepixel); | |
c7a4dac0 | 450 | } // end if r1==r2 && c1==c2. |
451 | ||
452 | for (Int_t npix=0;npix<npixel;npix++){ | |
aacedc3e | 453 | row = frowpixel[npix]; |
454 | col = fcolpixel[npix]; | |
455 | ene = fenepixel[npix]; | |
456 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
457 | // Starting capacitive coupling effect | |
458 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
c7a4dac0 | 459 | } // end for npix |
460 | } | |
461 | //______________________________________________________________________ | |
462 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
463 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
464 | Int_t r2,Float_t etot, | |
465 | Int_t &npixel,Int_t *frowpixel, | |
466 | Int_t *fcolpixel,Double_t *fenepixel){ | |
467 | // Take into account the geometrical charge sharing when the track | |
468 | // crosses more than one pixel. | |
aacedc3e | 469 | // Inputs: |
470 | // Float_t x1l | |
471 | // Float_t z1l | |
472 | // Float_t x2l | |
473 | // Float_t z2l | |
474 | // Int_t c1 | |
475 | // Int_t r1 | |
476 | // Int_t c2 | |
477 | // Int_t r2 | |
478 | // Float_t etot | |
479 | // Int_t &npixel | |
480 | // Int_t *frowpixel array of pixel rows | |
481 | // Int_t *fcolpixel array of pixel columns | |
482 | // Double_t *fenepiexel array of pixel energies | |
483 | // Outputs: | |
484 | // Int_t &npixel | |
485 | // Return: | |
486 | // none. | |
c7a4dac0 | 487 | // |
488 | //Begin_Html | |
21b825a4 | 489 | /* |
c7a4dac0 | 490 | <img src="picts/ITS/barimodel_2.gif"> |
491 | </pre> | |
492 | <br clear=left> | |
493 | <font size=+2 color=red> | |
494 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
495 | </font> | |
496 | <pre> | |
21b825a4 | 497 | */ |
c7a4dac0 | 498 | //End_Html |
ee86d557 | 499 | //Float_t dm; |
500 | Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc; | |
c7a4dac0 | 501 | Float_t refn=0.; |
502 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
503 | Int_t dirx,dirz,rb,cb; | |
504 | Int_t flag,flagrow,flagcol; | |
505 | Double_t epar; | |
506 | ||
507 | npixel = 0; | |
508 | xa = x1l; | |
509 | za = z1l; | |
cf6105a4 | 510 | // dx = x1l-x2l; |
511 | // dz = z1l-z2l; | |
512 | dx = x2l-x1l; | |
513 | dz = z2l-z1l; | |
c7a4dac0 | 514 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 515 | if (dtot==0.0) dtot = 0.01; |
516 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
517 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 518 | |
519 | // calculate the x coordinate of the pixel in the next column | |
520 | // and the z coordinate of the pixel in the next row | |
521 | Float_t xpos, zpos; | |
522 | ||
523 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
524 | ||
525 | Float_t xsize = fSegmentation->Dpx(0); | |
526 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 527 | |
c7a4dac0 | 528 | if (dirx == 1) refr = xpos+xsize/2.; |
529 | else refr = xpos-xsize/2.; | |
530 | ||
531 | if (dirz == 1) refn = zpos+zsize/2.; | |
532 | else refn = zpos-zsize/2.; | |
533 | ||
534 | flag = 0; | |
535 | flagrow = 0; | |
536 | flagcol = 0; | |
537 | do{ | |
aacedc3e | 538 | // calculate the x coordinate of the intersection with the pixel |
539 | // in the next cell in row direction | |
540 | if(dz!=0) | |
541 | refm = dx*((refn - z1l)/dz) + x1l; | |
542 | else | |
543 | refm = refr+dirx*xsize; | |
544 | ||
545 | // calculate the z coordinate of the intersection with the pixel | |
546 | // in the next cell in column direction | |
547 | if (dx!=0) | |
548 | refc = dz*((refr - x1l)/dx) + z1l; | |
549 | else | |
550 | refc = refn+dirz*zsize; | |
551 | ||
552 | arefm = refm * dirx; | |
553 | arefr = refr * dirx; | |
554 | arefn = refn * dirz; | |
555 | arefc = refc * dirz; | |
556 | ||
557 | if ((arefm < arefr) && (arefn < arefc)){ | |
558 | // the track goes in the pixel in the next cell in row direction | |
559 | xb = refm; | |
560 | zb = refn; | |
561 | cb = c1; | |
562 | rb = r1 + dirz; | |
563 | azb = zb * dirz; | |
564 | az2l = z2l * dirz; | |
565 | if (rb == r2) flagrow=1; | |
566 | if (azb > az2l) { | |
567 | zb = z2l; | |
568 | xb = x2l; | |
569 | } // end if | |
570 | // shift to the pixel in the next cell in row direction | |
571 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
572 | //to account for cell at the borders of the detector | |
573 | if(zsizeNext==0) zsizeNext = zsize; | |
574 | refn += zsizeNext*dirz; | |
575 | }else { | |
576 | // the track goes in the pixel in the next cell in column direction | |
577 | xb = refr; | |
578 | zb = refc; | |
579 | cb = c1 + dirx; | |
580 | rb = r1; | |
581 | axb = xb * dirx; | |
582 | ax2l = x2l * dirx; | |
583 | if (cb == c2) flagcol=1; | |
584 | if (axb > ax2l) { | |
585 | zb = z2l; | |
586 | xb = x2l; | |
587 | } // end ifaxb > ax2l | |
588 | ||
589 | // shift to the pixel in the next cell in column direction | |
590 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
591 | //to account for cell at the borders of the detector | |
592 | if(xsizeNext==0) xsizeNext = xsize; | |
593 | refr += xsizeNext*dirx; | |
594 | } // end if (arefm < arefr) && (arefn < arefc) | |
595 | ||
596 | //calculate the energy lost in the crossed pixel | |
597 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
598 | epar = etot*(epar/dtot); | |
599 | ||
600 | //store row, column and energy lost in the crossed pixel | |
601 | frowpixel[npixel] = r1; | |
602 | fcolpixel[npixel] = c1; | |
603 | fenepixel[npixel] = epar; | |
604 | npixel++; | |
605 | ||
606 | // the exit point of the track is reached | |
607 | if (epar == 0) flag = 1; | |
608 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
609 | if (flag!=1) { | |
610 | r1 = rb; | |
611 | c1 = cb; | |
612 | xa = xb; | |
613 | za = zb; | |
614 | } // end if flag!=1 | |
c7a4dac0 | 615 | } while (flag==0); |
21b825a4 | 616 | } |
c7a4dac0 | 617 | //______________________________________________________________________ |
21b825a4 | 618 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 619 | Int_t idhit,Int_t module, |
620 | AliITSpList *pList) { | |
621 | // Take into account the coupling between adiacent pixels. | |
f8d9a5b8 | 622 | // The parameters probcol and probrow are the probability of the |
623 | // signal in one pixel shared in the two adjacent pixels along | |
624 | // the column and row direction, respectively. | |
aacedc3e | 625 | // Inputs: |
626 | // Int_t row pixel row number | |
627 | // Int_t col pixel column number | |
628 | // Int_t ntrack track number of track contributing to this signal | |
629 | // Int_t idhit hit number of hit contributing to this signal | |
630 | // Int_t module module number | |
631 | // AliITSpList *pList the array of SDigits | |
632 | // Outputs: | |
633 | // AliITSpList *pList the array of SDigits | |
634 | // Return: | |
635 | // none. | |
f8d9a5b8 | 636 | // |
637 | //Begin_Html | |
638 | /* | |
639 | <img src="picts/ITS/barimodel_3.gif"> | |
640 | </pre> | |
641 | <br clear=left> | |
642 | <font size=+2 color=red> | |
643 | <a href="mailto:tiziano.virgili@cern.ch"></a>. | |
644 | </font> | |
645 | <pre> | |
646 | */ | |
647 | //End_Html | |
648 | Int_t j1,j2,flag=0; | |
649 | Double_t pulse1,pulse2; | |
aacedc3e | 650 | Double_t couplR=0.0,couplC=0.0; |
f8d9a5b8 | 651 | Double_t xr=0.; |
652 | ||
653 | GetCouplings(couplR,couplC); | |
654 | j1 = row; | |
655 | j2 = col; | |
656 | pulse1 = fMapA2->GetSignal(row,col); | |
657 | pulse2 = pulse1; | |
658 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 659 | do{ |
660 | j1 += isign; | |
661 | // pulse1 *= couplR; | |
662 | xr = gRandom->Rndm(); | |
663 | //if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
664 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){ | |
665 | j1 = row; | |
666 | flag = 1; | |
667 | }else{ | |
668 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
669 | // flag = 0; | |
670 | flag = 1; // only first next!! | |
671 | } // end if | |
672 | } while(flag == 0); | |
673 | // loop in column direction | |
674 | do{ | |
675 | j2 += isign; | |
676 | // pulse2 *= couplC; | |
677 | xr = gRandom->Rndm(); | |
678 | //if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
679 | if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){ | |
680 | j2 = col; | |
681 | flag = 1; | |
682 | }else{ | |
683 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
684 | // flag = 0; | |
685 | flag = 1; // only first next!! | |
686 | } // end if | |
687 | } while(flag == 0); | |
f8d9a5b8 | 688 | } // for isign |
689 | } | |
690 | //______________________________________________________________________ | |
691 | void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack, | |
692 | Int_t idhit,Int_t module, | |
693 | AliITSpList *pList) { | |
694 | // Take into account the coupling between adiacent pixels. | |
c7a4dac0 | 695 | // The parameters probcol and probrow are the fractions of the |
696 | // signal in one pixel shared in the two adjacent pixels along | |
697 | // the column and row direction, respectively. | |
aacedc3e | 698 | // Inputs: |
699 | // Int_t row pixel row number | |
700 | // Int_t col pixel column number | |
701 | // Int_t ntrack track number of track contributing to this pixel | |
702 | // Int_t idhit hit index number of hit contributing to this pixel | |
703 | // Int_t module module number | |
704 | // AliITSpList *pList the array of SDigits | |
705 | // Outputs: | |
706 | // AliITSpList *pList the array of SDigits | |
707 | // Return: | |
708 | // none. | |
c7a4dac0 | 709 | // |
710 | //Begin_Html | |
711 | /* | |
712 | <img src="picts/ITS/barimodel_3.gif"> | |
713 | </pre> | |
714 | <br clear=left> | |
715 | <font size=+2 color=red> | |
716 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
717 | </font> | |
718 | <pre> | |
719 | */ | |
720 | //End_Html | |
721 | Int_t j1,j2,flag=0; | |
722 | Double_t pulse1,pulse2; | |
aacedc3e | 723 | Double_t couplR=0.0,couplC=0.0; |
c7a4dac0 | 724 | |
725 | GetCouplings(couplR,couplC); | |
726 | j1 = row; | |
727 | j2 = col; | |
728 | pulse1 = fMapA2->GetSignal(row,col); | |
729 | pulse2 = pulse1; | |
730 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 731 | do{ |
732 | j1 += isign; | |
733 | pulse1 *= couplR; | |
734 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
735 | pulse1 = fMapA2->GetSignal(row,col); | |
736 | j1 = row; | |
737 | flag = 1; | |
738 | }else{ | |
739 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
740 | flag = 0; | |
741 | } // end if | |
742 | } while(flag == 0); | |
743 | // loop in column direction | |
744 | do{ | |
745 | j2 += isign; | |
746 | pulse2 *= couplC; | |
747 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
748 | pulse2 = fMapA2->GetSignal(row,col); | |
749 | j2 = col; | |
750 | flag = 1; | |
751 | }else{ | |
752 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
753 | flag = 0; | |
754 | } // end if | |
755 | } while(flag == 0); | |
c7a4dac0 | 756 | } // for isign |
21b825a4 | 757 | } |
c7a4dac0 | 758 | //______________________________________________________________________ |
759 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
760 | // The pixels are fired if the energy deposited inside them is above | |
761 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
762 | // and stored in the file digitfilename. One also needs to write out | |
763 | // cases when there is only noise (nhits==0). | |
aacedc3e | 764 | // Inputs: |
765 | // Int_t module | |
766 | // AliITSpList *pList the array of SDigits | |
767 | // Outputs: | |
768 | // AliITSpList *pList the array of SDigits | |
769 | // Return: | |
770 | // none. | |
c7a4dac0 | 771 | |
772 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
773 | ||
ee86d557 | 774 | Int_t size = AliITSdigitSPD::GetNTracks(); |
5c5273c2 | 775 | Int_t * digits = new Int_t[size]; |
776 | Int_t * tracks = new Int_t[size]; | |
777 | Int_t * hits = new Int_t[size]; | |
778 | Float_t * charges = new Float_t[size]; | |
c7a4dac0 | 779 | Int_t j1; |
780 | ||
ac74f489 | 781 | module=0; // remove unused variable warning. |
f8d9a5b8 | 782 | for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;} |
c7a4dac0 | 783 | for (Int_t r=1;r<=GetNPixelsZ();r++) { |
aacedc3e | 784 | for (Int_t c=1;c<=GetNPixelsX();c++) { |
785 | // check if the deposited energy in a pixel is above the | |
786 | // threshold | |
787 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
788 | if ( signal > GetThreshold()) { | |
789 | digits[0] = r-1; // digits starts from 0 | |
790 | digits[1] = c-1; // digits starts from 0 | |
791 | //digits[2] = 1; | |
792 | digits[2] = (Int_t) signal; // the signal is stored in | |
c7a4dac0 | 793 | // electrons |
aacedc3e | 794 | for(j1=0;j1<size;j1++){ |
795 | if(j1<pList->GetNEnteries()){ | |
796 | tracks[j1] = pList->GetTrack(r,c,j1); | |
797 | hits[j1] = pList->GetHit(r,c,j1); | |
798 | //}else{ | |
799 | //tracks[j1] = -3; | |
800 | //hits[j1] = -1; | |
801 | } // end if | |
802 | //charges[j1] = 0; | |
803 | } // end for j1 | |
804 | Float_t phys = 0; | |
805 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); | |
806 | if(GetDebug()){ | |
807 | cout << " CreateSPDDigit mod=" << fModule << " r,c=" << r; | |
808 | cout <<","<<c<< " sig=" << fpList->GetSignalOnly(r,c); | |
809 | cout << " noise=" << fpList->GetNoise(r,c); | |
810 | cout << " Msig="<< signal << " Thres=" << GetThreshold(); | |
811 | cout <<endl; | |
812 | }// end if GetDebug | |
813 | } // end if of threshold condition | |
814 | } // for c | |
c7a4dac0 | 815 | }// end do on pixels |
5c5273c2 | 816 | delete [] digits; |
817 | delete [] tracks; | |
818 | delete [] hits; | |
819 | delete [] charges; | |
21b825a4 | 820 | } |
c7a4dac0 | 821 | //______________________________________________________________________ |
822 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
823 | // Set the electronic noise and threshold non-uniformities to all the | |
824 | // pixels in a detector. | |
825 | // The parameter fSigma is the squared sum of the sigma due to noise | |
826 | // and the sigma of the threshold distribution among pixels. | |
aacedc3e | 827 | // Inputs: |
828 | // Int_t module modulel number | |
829 | // AliITSpList *pList the array of SDigits | |
830 | // Outputs: | |
831 | // AliITSpList *pList the array of SDigits | |
832 | // Return: | |
833 | // none. | |
c7a4dac0 | 834 | // |
835 | //Begin_Html | |
836 | /* | |
837 | <img src="picts/ITS/barimodel_1.gif"> | |
838 | </pre> | |
839 | <br clear=left> | |
840 | <font size=+2 color=red> | |
841 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
842 | </font> | |
843 | <pre> | |
844 | */ | |
845 | //End_Html | |
aacedc3e | 846 | Double_t thr=0.0,sigm=0.0; |
c7a4dac0 | 847 | Double_t signal,sigma; |
848 | Int_t iz,ix; | |
849 | ||
850 | GetThresholds(thr,sigm); | |
851 | sigma = (Double_t) sigm; | |
852 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
aacedc3e | 853 | for(ix=1;ix<=GetNPixelsX();ix++){ |
854 | signal = sigma*gRandom->Gaus(); | |
855 | fMapA2->SetHit(iz,ix,signal); | |
856 | // insert in the label-signal-hit list the pixels fired | |
857 | // only by noise | |
858 | pList->AddNoise(iz,ix,module,signal); | |
859 | } // end of loop on pixels | |
21b825a4 | 860 | } // end of loop on pixels |
c7a4dac0 | 861 | } |
862 | //______________________________________________________________________ | |
863 | void AliITSsimulationSPD::SetMask() { | |
864 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
865 | // masked. When the database will be ready, the masked pixels | |
866 | // should be read from it. | |
aacedc3e | 867 | // Inputs: |
868 | // none. | |
869 | // Outputs: | |
870 | // none. | |
871 | // Return: | |
872 | // none. | |
c7a4dac0 | 873 | Double_t signal; |
874 | Int_t iz,ix,im; | |
875 | Float_t totMask; | |
876 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
877 | // in this way we get the same set of random numbers for all runs. | |
878 | // This is a cluge for now. | |
879 | static TRandom *rnd = new TRandom(); | |
880 | ||
881 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
882 | for(im=1;im<totMask;im++){ | |
aacedc3e | 883 | do{ |
884 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
885 | } while(ix<=0 || ix>GetNPixelsX()); | |
886 | do{ | |
887 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
888 | } while(iz<=0 || iz>GetNPixelsZ()); | |
889 | signal = -1.; | |
890 | fMapA2->SetHit(iz,ix,signal); | |
c7a4dac0 | 891 | } // end loop on masked pixels |
892 | } | |
893 | //______________________________________________________________________ | |
21b825a4 | 894 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 895 | // Create Histograms |
aacedc3e | 896 | // Inputs: |
897 | // none. | |
898 | // Outputs: | |
899 | // none. | |
900 | // Return: | |
901 | // none. | |
c7a4dac0 | 902 | Int_t i; |
21b825a4 | 903 | |
c7a4dac0 | 904 | fHis=new TObjArray(GetNPixelsZ()); |
905 | for(i=0;i<GetNPixelsZ();i++) { | |
aacedc3e | 906 | TString spdname("spd_"); |
907 | Char_t candnum[4]; | |
908 | sprintf(candnum,"%d",i+1); | |
909 | spdname.Append(candnum); | |
910 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
911 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
c7a4dac0 | 912 | } // end for i |
b0f5e3fc | 913 | } |
c7a4dac0 | 914 | //______________________________________________________________________ |
21b825a4 | 915 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 916 | // Reset histograms for this detector |
aacedc3e | 917 | // Inputs: |
918 | // none. | |
919 | // Outputs: | |
920 | // none. | |
921 | // Return: | |
922 | // none. | |
21b825a4 | 923 | Int_t i; |
b0f5e3fc | 924 | |
c7a4dac0 | 925 | for(i=0;i<GetNPixelsZ();i++ ) { |
aacedc3e | 926 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); |
c7a4dac0 | 927 | } // end for i |
928 | } | |
929 | //______________________________________________________________________ | |
930 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
931 | // Fills the Summable digits Tree | |
aacedc3e | 932 | // Inputs: |
933 | // AliITSpList *pList the array of SDigits | |
934 | // Outputs: | |
935 | // AliITSpList *pList the array of SDigits | |
936 | // Return: | |
937 | // none. | |
c7a4dac0 | 938 | Int_t i,ni,j,nj; |
939 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
940 | ||
941 | pList->GetMaxMapIndex(ni,nj); | |
942 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
aacedc3e | 943 | if(pList->GetSignalOnly(i,j)>0.0){ |
944 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
945 | if(GetDebug()){ | |
946 | cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; | |
947 | cout << " CreateSPDSDigit mod=" << fModule << " r,c="; | |
948 | cout << i <<","<< j << " sig=" << fpList->GetSignalOnly(i,j); | |
949 | cout << " noise=" << fpList->GetNoise(i,j) <<endl; | |
950 | } // end if GetDebug | |
951 | } // end if | |
c7a4dac0 | 952 | } // end for i,j |
953 | return; | |
954 | } | |
955 | //______________________________________________________________________ | |
956 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
957 | // Fills fMap2A from the pList of Summable digits | |
aacedc3e | 958 | // Inputs: |
959 | // AliITSpList *pList the array of SDigits | |
960 | // Outputs: | |
961 | // AliITSpList *pList the array of SDigits | |
962 | // Return: | |
963 | // none. | |
3a97c582 | 964 | Int_t ix,iz; |
c7a4dac0 | 965 | |
3a97c582 | 966 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
967 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 968 | return; |
b0f5e3fc | 969 | } |