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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" | |
f77f13c8 | 37 | #include "AliLog.h" |
9f033001 | 38 | |
bb6b39bf | 39 | //#define DEBUG |
e8189707 | 40 | |
b0f5e3fc | 41 | ClassImp(AliITSsimulationSPD) |
42 | //////////////////////////////////////////////////////////////////////// | |
43 | // Version: 0 | |
21b825a4 | 44 | // Written by Rocco Caliandro |
45 | // from a model developed with T. Virgili and R.A. Fini | |
46 | // June 15 2000 | |
b0f5e3fc | 47 | // |
48 | // AliITSsimulationSPD is the simulation of SPDs | |
21b825a4 | 49 | // |
c7a4dac0 | 50 | //______________________________________________________________________ |
aacedc3e | 51 | AliITSsimulationSPD::AliITSsimulationSPD() : AliITSsimulation(), |
52 | fMapA2(0), | |
53 | fHis(0){ | |
c7a4dac0 | 54 | // Default constructor |
aacedc3e | 55 | // Inputs: |
56 | // none. | |
57 | // Outputs: | |
58 | // none. | |
59 | // Return: | |
60 | // A default constructed AliITSsimulationSPD class. | |
b0f5e3fc | 61 | } |
c7a4dac0 | 62 | //______________________________________________________________________ |
63 | AliITSsimulationSPD::AliITSsimulationSPD(AliITSsegmentation *seg, | |
aacedc3e | 64 | AliITSresponse *res): |
65 | AliITSsimulation(seg,res), | |
66 | fMapA2(0), | |
67 | fHis(0){ | |
c7a4dac0 | 68 | // Standard constructor |
aacedc3e | 69 | // Inputs: |
70 | // AliITSsegmentation *seg Segmentation class to be used | |
71 | // AliITSresonse *res Response class to be used | |
72 | // Outputs: | |
73 | // none. | |
74 | // Return: | |
75 | // A standard constructed AliITSsimulationSPD class. | |
76 | ||
77 | Init(); | |
78 | } | |
79 | //______________________________________________________________________ | |
80 | void AliITSsimulationSPD::Init() { | |
81 | // Initilizes the variables of AliITSsimulation SPD. | |
82 | // Inputs: | |
83 | // none. | |
84 | // Outputs: | |
85 | // none. | |
86 | // Return: | |
87 | // none. | |
c7a4dac0 | 88 | |
aacedc3e | 89 | fHis = 0; |
90 | if(fMapA2) delete fMapA2; | |
91 | fMapA2 = new AliITSMapA2(fSegmentation); | |
92 | if(fpList) delete fpList; | |
93 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
b0f5e3fc | 94 | } |
c7a4dac0 | 95 | //______________________________________________________________________ |
96 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
aacedc3e | 97 | AliITSresponseSPD *resp) { |
c7a4dac0 | 98 | // Initilizes the variables of AliITSsimulation SPD. |
aacedc3e | 99 | // Inputs: |
100 | // AliITSsegmentationSPD replacement segmentation class to be used | |
101 | // aliITSresponseSPD replacement response class to be used | |
102 | // Outputs: | |
103 | // none. | |
104 | // Return: | |
105 | // none. | |
c7a4dac0 | 106 | |
aacedc3e | 107 | if(fHis){ |
108 | fHis->Delete(); | |
109 | delete fHis; | |
110 | } // end if fHis | |
c7a4dac0 | 111 | fHis = 0; |
aacedc3e | 112 | if(fResponse) delete fResponse; |
c7a4dac0 | 113 | fResponse = resp; |
aacedc3e | 114 | if(fSegmentation) delete fSegmentation; |
c7a4dac0 | 115 | fSegmentation = seg; |
aacedc3e | 116 | if(fMapA2) delete fMapA2; |
3a97c582 | 117 | fMapA2 = new AliITSMapA2(fSegmentation); |
aacedc3e | 118 | if(fpList) delete fpList; |
3a97c582 | 119 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); |
c7a4dac0 | 120 | } |
121 | //______________________________________________________________________ | |
b0f5e3fc | 122 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 123 | // destructor |
aacedc3e | 124 | // Inputs: |
125 | // none. | |
126 | // Outputs: | |
127 | // none. | |
128 | // Return: | |
129 | // none. | |
b0f5e3fc | 130 | |
aacedc3e | 131 | if(fMapA2) delete fMapA2; |
b0f5e3fc | 132 | |
c7a4dac0 | 133 | if (fHis) { |
aacedc3e | 134 | fHis->Delete(); |
135 | delete fHis; | |
c7a4dac0 | 136 | } // end if |
b0f5e3fc | 137 | } |
c7a4dac0 | 138 | //______________________________________________________________________ |
ac74f489 | 139 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source) : |
140 | AliITSsimulation(source){ | |
c7a4dac0 | 141 | // Copy Constructor |
aacedc3e | 142 | // Inputs: |
143 | // none. | |
144 | // Outputs: | |
145 | // none. | |
146 | // Return: | |
147 | // A new AliITSsimulationSPD class with the same parameters as source. | |
c7a4dac0 | 148 | |
149 | if(&source == this) return; | |
150 | ||
151 | this->fMapA2 = source.fMapA2; | |
152 | this->fHis = source.fHis; | |
c7a4dac0 | 153 | return; |
b0f5e3fc | 154 | } |
c7a4dac0 | 155 | //______________________________________________________________________ |
156 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
157 | &source) { | |
158 | // Assignment operator | |
aacedc3e | 159 | // Inputs: |
160 | // none. | |
161 | // Outputs: | |
162 | // none. | |
163 | // Return: | |
164 | // A new AliITSsimulationSPD class with the same parameters as source. | |
c7a4dac0 | 165 | |
166 | if(&source == this) return *this; | |
167 | ||
168 | this->fMapA2 = source.fMapA2; | |
169 | this->fHis = source.fHis; | |
c7a4dac0 | 170 | return *this; |
3a97c582 | 171 | } |
d2f55a22 | 172 | //______________________________________________________________________ |
173 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulation | |
174 | &source) { | |
175 | // Assignment operator | |
176 | // Inputs: | |
177 | // none. | |
178 | // Outputs: | |
179 | // none. | |
180 | // Return: | |
181 | // A new AliITSsimulationSPD class with the same parameters as source. | |
182 | ||
183 | if(&source == this) return *this; | |
184 | Error("AliITSsimulationSPD","Not allowed to make a = with " | |
185 | "AliITSsimulationSPD Using default creater instead"); | |
186 | ||
187 | return *this; | |
188 | } | |
189 | ||
3a97c582 | 190 | //______________________________________________________________________ |
191 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
192 | // Creates maps to build the list of tracks for each sumable digit | |
193 | // Inputs: | |
194 | // Int_t module // Module number to be simulated | |
195 | // Int_t event // Event number to be simulated | |
196 | // Outputs: | |
197 | // none. | |
198 | // Return | |
199 | // none. | |
200 | ||
201 | fModule = module; | |
202 | fEvent = event; | |
203 | fMapA2->ClearMap(); | |
204 | fpList->ClearMap(); | |
205 | } | |
206 | //______________________________________________________________________ | |
207 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
208 | // Does the Sdigits to Digits work | |
209 | // Inputs: | |
210 | // none. | |
211 | // Outputs: | |
212 | // none. | |
213 | // Return: | |
214 | // none. | |
215 | ||
216 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 217 | } |
218 | //______________________________________________________________________ | |
219 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
220 | Int_t dummy1) { | |
221 | // Sum digitize module | |
aacedc3e | 222 | // Inputs: |
223 | // AliITSmodule *mod The module to be SDgitized | |
224 | // Int_t dummy0 Not used kept for general compatibility | |
225 | // Int_t dummy1 Not used kept for general compatibility | |
226 | // Outputs: | |
227 | // none. | |
228 | // Return: | |
229 | // none. | |
c7a4dac0 | 230 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. |
231 | Int_t number = 10000; | |
232 | Int_t *frowpixel = new Int_t[number]; | |
233 | Int_t *fcolpixel = new Int_t[number]; | |
234 | Double_t *fenepixel = new Double_t[number]; | |
235 | ||
ac74f489 | 236 | dummy0 = dummy1; // remove unsued variable warning. |
3a97c582 | 237 | fModule = mod->GetIndex(); |
238 | ||
c7a4dac0 | 239 | // Array of pointers to store the track index of the digits |
240 | // leave +1, otherwise pList crashes when col=256, row=192 | |
c7a4dac0 | 241 | |
3a97c582 | 242 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 243 | |
3a97c582 | 244 | WriteSDigits(fpList); |
c7a4dac0 | 245 | |
246 | // clean memory | |
247 | delete[] frowpixel; | |
248 | delete[] fcolpixel; | |
249 | delete[] fenepixel; | |
250 | fMapA2->ClearMap(); | |
3a97c582 | 251 | fpList->ClearMap(); |
c7a4dac0 | 252 | } |
253 | //______________________________________________________________________ | |
aacedc3e | 254 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t,Int_t) { |
c7a4dac0 | 255 | // digitize module. Also need to digitize modules with only noise. |
aacedc3e | 256 | // Inputs: |
257 | // AliITSmodule *mod The module to be SDgitized | |
258 | // Outputs: | |
259 | // none. | |
260 | // Return: | |
261 | // none. | |
b0f5e3fc | 262 | |
c7a4dac0 | 263 | Int_t number = 10000; |
264 | Int_t *frowpixel = new Int_t[number]; | |
265 | Int_t *fcolpixel = new Int_t[number]; | |
266 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 267 | |
c7a4dac0 | 268 | // Array of pointers to store the track index of the digits |
3a97c582 | 269 | // leave +1, otherwise pList crashes when col=256, row=192 |
270 | fModule = mod->GetIndex(); | |
c7a4dac0 | 271 | // noise setting |
3a97c582 | 272 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 273 | |
3a97c582 | 274 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 275 | |
c7a4dac0 | 276 | // apply mask to SPD module |
277 | SetMask(); | |
21b825a4 | 278 | |
3a97c582 | 279 | CreateDigit(fModule,fpList); |
b0f5e3fc | 280 | |
c7a4dac0 | 281 | // clean memory |
282 | delete[] frowpixel; | |
283 | delete[] fcolpixel; | |
284 | delete[] fenepixel; | |
285 | fMapA2->ClearMap(); | |
3a97c582 | 286 | fpList->ClearMap(); |
21b825a4 | 287 | } |
c7a4dac0 | 288 | //______________________________________________________________________ |
289 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
290 | // sum digits to Digits. | |
aacedc3e | 291 | // Inputs: |
292 | // AliITSmodule *mod The module to be SDgitized | |
293 | // AliITSpList *pList the array of SDigits | |
294 | // Outputs: | |
295 | // AliITSpList *pList the array of SDigits | |
296 | // Return: | |
297 | // none. | |
bb6b39bf | 298 | |
f77f13c8 | 299 | AliDebug(1,Form("Entering AliITSsimulatinSPD::SDigitsToDigits for module=%d", |
300 | module)); | |
3a97c582 | 301 | fModule = module; |
b0f5e3fc | 302 | |
c7a4dac0 | 303 | // noise setting |
304 | SetFluctuations(pList,module); | |
b0f5e3fc | 305 | |
3a97c582 | 306 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
307 | // noise is not doubled when calling FillMapFrompList. | |
308 | ||
309 | FillMapFrompList(pList); | |
310 | ||
c7a4dac0 | 311 | // apply mask to SPD module |
312 | SetMask(); | |
21b825a4 | 313 | |
c7a4dac0 | 314 | CreateDigit(module,pList); |
3a97c582 | 315 | |
316 | fMapA2->ClearMap(); | |
317 | pList->ClearMap(); | |
c7a4dac0 | 318 | } |
319 | //______________________________________________________________________ | |
320 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
321 | Int_t hit,Int_t mod,Double_t ene, | |
322 | AliITSpList *pList) { | |
323 | // updates the Map of signal, adding the energy (ene) released by | |
324 | // the current track | |
aacedc3e | 325 | // Inputs: |
326 | // Int_t row pixel row number | |
327 | // Int_t col pixel column number | |
328 | // Int_t trk track number which contributed | |
329 | // Int_t hit hit number which contributed | |
330 | // Int_t mod module number | |
331 | // Double_t ene the energy associated with this contribution | |
332 | // AliITSpList *pList the array of SDigits | |
333 | // Outputs: | |
334 | // AliITSpList *pList the array of SDigits | |
335 | // Return: | |
336 | // none. | |
c7a4dac0 | 337 | |
338 | fMapA2->AddSignal(row,col,ene); | |
339 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
340 | } | |
341 | //______________________________________________________________________ | |
342 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
343 | Double_t ene,AliITSpList *pList) { | |
344 | // updates the Map of noise, adding the energy (ene) give my noise | |
aacedc3e | 345 | // Inputs: |
346 | // Int_t row pixel row number | |
347 | // Int_t col pixel column number | |
348 | // Int_t mod module number | |
349 | // Double_t ene the energy associated with this contribution | |
350 | // AliITSpList *pList the array of SDigits | |
351 | // Outputs: | |
352 | // AliITSpList *pList the array of SDigits | |
353 | // Return: | |
354 | // none. | |
21b825a4 | 355 | |
c7a4dac0 | 356 | fMapA2->AddSignal(row,col,ene); |
357 | pList->AddNoise(row,col,mod,ene); | |
358 | } | |
359 | //______________________________________________________________________ | |
360 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
361 | Int_t *frowpixel,Int_t *fcolpixel, | |
362 | Double_t *fenepixel, | |
363 | AliITSpList *pList) { | |
364 | // Loops over all hits to produce Analog/floting point digits. This | |
365 | // is also the first task in producing standard digits. | |
aacedc3e | 366 | // Inputs: |
367 | // AliITSmodule *mod module class | |
368 | // Int_t *frowpixel array of pixel rows | |
369 | // Int_t *fcolpixel array of pixel columns | |
370 | // Double_t *fenepiexel array of pixel energies | |
371 | // AliITSpList *pList the array of SDigits | |
372 | // Outputs: | |
373 | // AliITSpList *pList the array of SDigits | |
374 | // Return: | |
375 | // none. | |
21b825a4 | 376 | |
c7a4dac0 | 377 | // loop over hits in the module |
378 | Int_t hitpos,nhits = mod->GetNhits(); | |
379 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
aacedc3e | 380 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); |
c7a4dac0 | 381 | }// end loop over digits |
382 | } | |
383 | //______________________________________________________________________ | |
384 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
385 | Int_t *frowpixel,Int_t *fcolpixel, | |
386 | Double_t *fenepixel,AliITSpList *pList) { | |
387 | // Steering function to determine the digits associated to a given | |
388 | // hit (hitpos) | |
389 | // The digits are created by charge sharing (ChargeSharing) and by | |
390 | // capacitive coupling (SetCoupling). At all the created digits is | |
391 | // associated the track number of the hit (ntrack) | |
aacedc3e | 392 | // Inputs: |
393 | // AliITSmodule *mod module class | |
394 | // Int_t hitpos hit index value | |
395 | // Int_t *frowpixel array of pixel rows | |
396 | // Int_t *fcolpixel array of pixel columns | |
397 | // Double_t *fenepiexel array of pixel energies | |
398 | // AliITSpList *pList the array of SDigits | |
399 | // Outputs: | |
400 | // AliITSpList *pList the array of SDigits | |
401 | // Return: | |
402 | // none. | |
c7a4dac0 | 403 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; |
404 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
405 | Int_t ntrack; | |
406 | Double_t ene=0.0,etot=0.0; | |
407 | const Float_t kconv = 10000.; // cm -> microns | |
408 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
409 | ||
410 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
411 | ||
412 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
413 | // positions shifted and converted in microns | |
414 | x1l = x1l*kconv + fSegmentation->Dx()/2.; | |
415 | z1l = z1l*kconv + fSegmentation->Dz()/2.; | |
416 | // positions shifted and converted in microns | |
417 | x2l = x2l*kconv + fSegmentation->Dx()/2.; | |
418 | z2l = z2l*kconv + fSegmentation->Dz()/2.; | |
419 | etot *= kconv1; // convert from GeV to electrons equivalent. | |
420 | Int_t module = mod->GetIndex(); | |
421 | ||
422 | // to account for the effective sensitive area | |
423 | // introduced in geometry | |
424 | if (z1l<0 || z1l>fSegmentation->Dz()) return; | |
425 | if (z2l<0 || z2l>fSegmentation->Dz()) return; | |
426 | if (x1l<0 || x1l>fSegmentation->Dx()) return; | |
427 | if (x2l<0 || x2l>fSegmentation->Dx()) return; | |
428 | ||
429 | //Get the col and row number starting from 1 | |
430 | // the x direction is not inverted for the second layer!!! | |
431 | fSegmentation->GetPadIxz(x1l, z1l, c1, r1); | |
432 | fSegmentation->GetPadIxz(x2l, z2l, c2, r2); | |
433 | ||
434 | // to account for unexpected equal entrance and | |
435 | // exit coordinates | |
0fee5d51 | 436 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
437 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 438 | |
439 | if ((r1==r2) && (c1==c2)){ | |
aacedc3e | 440 | // no charge sharing |
441 | npixel = 1; | |
442 | frowpixel[npixel-1] = r1; | |
443 | fcolpixel[npixel-1] = c1; | |
444 | fenepixel[npixel-1] = etot; | |
c7a4dac0 | 445 | } else { |
aacedc3e | 446 | // charge sharing |
447 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
448 | npixel,frowpixel,fcolpixel,fenepixel); | |
c7a4dac0 | 449 | } // end if r1==r2 && c1==c2. |
450 | ||
451 | for (Int_t npix=0;npix<npixel;npix++){ | |
aacedc3e | 452 | row = frowpixel[npix]; |
453 | col = fcolpixel[npix]; | |
454 | ene = fenepixel[npix]; | |
455 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
456 | // Starting capacitive coupling effect | |
457 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
c7a4dac0 | 458 | } // end for npix |
459 | } | |
460 | //______________________________________________________________________ | |
461 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
462 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
463 | Int_t r2,Float_t etot, | |
464 | Int_t &npixel,Int_t *frowpixel, | |
465 | Int_t *fcolpixel,Double_t *fenepixel){ | |
466 | // Take into account the geometrical charge sharing when the track | |
467 | // crosses more than one pixel. | |
aacedc3e | 468 | // Inputs: |
469 | // Float_t x1l | |
470 | // Float_t z1l | |
471 | // Float_t x2l | |
472 | // Float_t z2l | |
473 | // Int_t c1 | |
474 | // Int_t r1 | |
475 | // Int_t c2 | |
476 | // Int_t r2 | |
477 | // Float_t etot | |
478 | // Int_t &npixel | |
479 | // Int_t *frowpixel array of pixel rows | |
480 | // Int_t *fcolpixel array of pixel columns | |
481 | // Double_t *fenepiexel array of pixel energies | |
482 | // Outputs: | |
483 | // Int_t &npixel | |
484 | // Return: | |
485 | // none. | |
c7a4dac0 | 486 | // |
487 | //Begin_Html | |
21b825a4 | 488 | /* |
c7a4dac0 | 489 | <img src="picts/ITS/barimodel_2.gif"> |
490 | </pre> | |
491 | <br clear=left> | |
492 | <font size=+2 color=red> | |
493 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
494 | </font> | |
495 | <pre> | |
21b825a4 | 496 | */ |
c7a4dac0 | 497 | //End_Html |
ee86d557 | 498 | //Float_t dm; |
499 | Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc; | |
c7a4dac0 | 500 | Float_t refn=0.; |
501 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
502 | Int_t dirx,dirz,rb,cb; | |
503 | Int_t flag,flagrow,flagcol; | |
504 | Double_t epar; | |
505 | ||
506 | npixel = 0; | |
507 | xa = x1l; | |
508 | za = z1l; | |
cf6105a4 | 509 | // dx = x1l-x2l; |
510 | // dz = z1l-z2l; | |
511 | dx = x2l-x1l; | |
512 | dz = z2l-z1l; | |
c7a4dac0 | 513 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 514 | if (dtot==0.0) dtot = 0.01; |
515 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
516 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 517 | |
518 | // calculate the x coordinate of the pixel in the next column | |
519 | // and the z coordinate of the pixel in the next row | |
520 | Float_t xpos, zpos; | |
521 | ||
522 | fSegmentation->GetPadCxz(c1, r1-1, xpos, zpos); | |
523 | ||
524 | Float_t xsize = fSegmentation->Dpx(0); | |
525 | Float_t zsize = fSegmentation->Dpz(r1-1); | |
21b825a4 | 526 | |
c7a4dac0 | 527 | if (dirx == 1) refr = xpos+xsize/2.; |
528 | else refr = xpos-xsize/2.; | |
529 | ||
530 | if (dirz == 1) refn = zpos+zsize/2.; | |
531 | else refn = zpos-zsize/2.; | |
532 | ||
533 | flag = 0; | |
534 | flagrow = 0; | |
535 | flagcol = 0; | |
536 | do{ | |
aacedc3e | 537 | // calculate the x coordinate of the intersection with the pixel |
538 | // in the next cell in row direction | |
539 | if(dz!=0) | |
540 | refm = dx*((refn - z1l)/dz) + x1l; | |
541 | else | |
542 | refm = refr+dirx*xsize; | |
543 | ||
544 | // calculate the z coordinate of the intersection with the pixel | |
545 | // in the next cell in column direction | |
546 | if (dx!=0) | |
547 | refc = dz*((refr - x1l)/dx) + z1l; | |
548 | else | |
549 | refc = refn+dirz*zsize; | |
550 | ||
551 | arefm = refm * dirx; | |
552 | arefr = refr * dirx; | |
553 | arefn = refn * dirz; | |
554 | arefc = refc * dirz; | |
555 | ||
556 | if ((arefm < arefr) && (arefn < arefc)){ | |
557 | // the track goes in the pixel in the next cell in row direction | |
558 | xb = refm; | |
559 | zb = refn; | |
560 | cb = c1; | |
561 | rb = r1 + dirz; | |
562 | azb = zb * dirz; | |
563 | az2l = z2l * dirz; | |
564 | if (rb == r2) flagrow=1; | |
565 | if (azb > az2l) { | |
566 | zb = z2l; | |
567 | xb = x2l; | |
568 | } // end if | |
569 | // shift to the pixel in the next cell in row direction | |
570 | Float_t zsizeNext = fSegmentation->Dpz(rb-1); | |
571 | //to account for cell at the borders of the detector | |
572 | if(zsizeNext==0) zsizeNext = zsize; | |
573 | refn += zsizeNext*dirz; | |
574 | }else { | |
575 | // the track goes in the pixel in the next cell in column direction | |
576 | xb = refr; | |
577 | zb = refc; | |
578 | cb = c1 + dirx; | |
579 | rb = r1; | |
580 | axb = xb * dirx; | |
581 | ax2l = x2l * dirx; | |
582 | if (cb == c2) flagcol=1; | |
583 | if (axb > ax2l) { | |
584 | zb = z2l; | |
585 | xb = x2l; | |
586 | } // end ifaxb > ax2l | |
587 | ||
588 | // shift to the pixel in the next cell in column direction | |
589 | Float_t xsizeNext = fSegmentation->Dpx(cb-1); | |
590 | //to account for cell at the borders of the detector | |
591 | if(xsizeNext==0) xsizeNext = xsize; | |
592 | refr += xsizeNext*dirx; | |
593 | } // end if (arefm < arefr) && (arefn < arefc) | |
594 | ||
595 | //calculate the energy lost in the crossed pixel | |
596 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
597 | epar = etot*(epar/dtot); | |
598 | ||
599 | //store row, column and energy lost in the crossed pixel | |
600 | frowpixel[npixel] = r1; | |
601 | fcolpixel[npixel] = c1; | |
602 | fenepixel[npixel] = epar; | |
603 | npixel++; | |
604 | ||
605 | // the exit point of the track is reached | |
606 | if (epar == 0) flag = 1; | |
607 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
608 | if (flag!=1) { | |
609 | r1 = rb; | |
610 | c1 = cb; | |
611 | xa = xb; | |
612 | za = zb; | |
613 | } // end if flag!=1 | |
c7a4dac0 | 614 | } while (flag==0); |
21b825a4 | 615 | } |
c7a4dac0 | 616 | //______________________________________________________________________ |
21b825a4 | 617 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 618 | Int_t idhit,Int_t module, |
619 | AliITSpList *pList) { | |
620 | // Take into account the coupling between adiacent pixels. | |
f8d9a5b8 | 621 | // The parameters probcol and probrow are the probability of the |
622 | // signal in one pixel shared in the two adjacent pixels along | |
623 | // the column and row direction, respectively. | |
aacedc3e | 624 | // Inputs: |
625 | // Int_t row pixel row number | |
626 | // Int_t col pixel column number | |
627 | // Int_t ntrack track number of track contributing to this signal | |
628 | // Int_t idhit hit number of hit contributing to this signal | |
629 | // Int_t module module number | |
630 | // AliITSpList *pList the array of SDigits | |
631 | // Outputs: | |
632 | // AliITSpList *pList the array of SDigits | |
633 | // Return: | |
634 | // none. | |
f8d9a5b8 | 635 | // |
636 | //Begin_Html | |
637 | /* | |
638 | <img src="picts/ITS/barimodel_3.gif"> | |
639 | </pre> | |
640 | <br clear=left> | |
641 | <font size=+2 color=red> | |
642 | <a href="mailto:tiziano.virgili@cern.ch"></a>. | |
643 | </font> | |
644 | <pre> | |
645 | */ | |
646 | //End_Html | |
647 | Int_t j1,j2,flag=0; | |
648 | Double_t pulse1,pulse2; | |
aacedc3e | 649 | Double_t couplR=0.0,couplC=0.0; |
f8d9a5b8 | 650 | Double_t xr=0.; |
651 | ||
652 | GetCouplings(couplR,couplC); | |
653 | j1 = row; | |
654 | j2 = col; | |
655 | pulse1 = fMapA2->GetSignal(row,col); | |
656 | pulse2 = pulse1; | |
657 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 658 | do{ |
659 | j1 += isign; | |
660 | // pulse1 *= couplR; | |
661 | xr = gRandom->Rndm(); | |
662 | //if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
663 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){ | |
664 | j1 = row; | |
665 | flag = 1; | |
666 | }else{ | |
667 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
668 | // flag = 0; | |
669 | flag = 1; // only first next!! | |
670 | } // end if | |
671 | } while(flag == 0); | |
672 | // loop in column direction | |
673 | do{ | |
674 | j2 += isign; | |
675 | // pulse2 *= couplC; | |
676 | xr = gRandom->Rndm(); | |
677 | //if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
678 | if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){ | |
679 | j2 = col; | |
680 | flag = 1; | |
681 | }else{ | |
682 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
683 | // flag = 0; | |
684 | flag = 1; // only first next!! | |
685 | } // end if | |
686 | } while(flag == 0); | |
f8d9a5b8 | 687 | } // for isign |
688 | } | |
689 | //______________________________________________________________________ | |
690 | void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack, | |
691 | Int_t idhit,Int_t module, | |
692 | AliITSpList *pList) { | |
693 | // Take into account the coupling between adiacent pixels. | |
c7a4dac0 | 694 | // The parameters probcol and probrow are the fractions of the |
695 | // signal in one pixel shared in the two adjacent pixels along | |
696 | // the column and row direction, respectively. | |
aacedc3e | 697 | // Inputs: |
698 | // Int_t row pixel row number | |
699 | // Int_t col pixel column number | |
700 | // Int_t ntrack track number of track contributing to this pixel | |
701 | // Int_t idhit hit index number of hit contributing to this pixel | |
702 | // Int_t module module number | |
703 | // AliITSpList *pList the array of SDigits | |
704 | // Outputs: | |
705 | // AliITSpList *pList the array of SDigits | |
706 | // Return: | |
707 | // none. | |
c7a4dac0 | 708 | // |
709 | //Begin_Html | |
710 | /* | |
711 | <img src="picts/ITS/barimodel_3.gif"> | |
712 | </pre> | |
713 | <br clear=left> | |
714 | <font size=+2 color=red> | |
715 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
716 | </font> | |
717 | <pre> | |
718 | */ | |
719 | //End_Html | |
720 | Int_t j1,j2,flag=0; | |
721 | Double_t pulse1,pulse2; | |
aacedc3e | 722 | Double_t couplR=0.0,couplC=0.0; |
c7a4dac0 | 723 | |
724 | GetCouplings(couplR,couplC); | |
725 | j1 = row; | |
726 | j2 = col; | |
727 | pulse1 = fMapA2->GetSignal(row,col); | |
728 | pulse2 = pulse1; | |
729 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 730 | do{ |
731 | j1 += isign; | |
732 | pulse1 *= couplR; | |
733 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
734 | pulse1 = fMapA2->GetSignal(row,col); | |
735 | j1 = row; | |
736 | flag = 1; | |
737 | }else{ | |
738 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
739 | flag = 0; | |
740 | } // end if | |
741 | } while(flag == 0); | |
742 | // loop in column direction | |
743 | do{ | |
744 | j2 += isign; | |
745 | pulse2 *= couplC; | |
746 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
747 | pulse2 = fMapA2->GetSignal(row,col); | |
748 | j2 = col; | |
749 | flag = 1; | |
750 | }else{ | |
751 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
752 | flag = 0; | |
753 | } // end if | |
754 | } while(flag == 0); | |
c7a4dac0 | 755 | } // for isign |
21b825a4 | 756 | } |
c7a4dac0 | 757 | //______________________________________________________________________ |
758 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
759 | // The pixels are fired if the energy deposited inside them is above | |
760 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
761 | // and stored in the file digitfilename. One also needs to write out | |
762 | // cases when there is only noise (nhits==0). | |
aacedc3e | 763 | // Inputs: |
764 | // Int_t module | |
765 | // AliITSpList *pList the array of SDigits | |
766 | // Outputs: | |
767 | // AliITSpList *pList the array of SDigits | |
768 | // Return: | |
769 | // none. | |
c7a4dac0 | 770 | |
771 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
772 | ||
ee86d557 | 773 | Int_t size = AliITSdigitSPD::GetNTracks(); |
5c5273c2 | 774 | Int_t * digits = new Int_t[size]; |
775 | Int_t * tracks = new Int_t[size]; | |
776 | Int_t * hits = new Int_t[size]; | |
777 | Float_t * charges = new Float_t[size]; | |
c7a4dac0 | 778 | Int_t j1; |
779 | ||
ac74f489 | 780 | module=0; // remove unused variable warning. |
f8d9a5b8 | 781 | for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;} |
c7a4dac0 | 782 | for (Int_t r=1;r<=GetNPixelsZ();r++) { |
aacedc3e | 783 | for (Int_t c=1;c<=GetNPixelsX();c++) { |
784 | // check if the deposited energy in a pixel is above the | |
785 | // threshold | |
786 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
787 | if ( signal > GetThreshold()) { | |
788 | digits[0] = r-1; // digits starts from 0 | |
789 | digits[1] = c-1; // digits starts from 0 | |
790 | //digits[2] = 1; | |
791 | digits[2] = (Int_t) signal; // the signal is stored in | |
c7a4dac0 | 792 | // electrons |
aacedc3e | 793 | for(j1=0;j1<size;j1++){ |
794 | if(j1<pList->GetNEnteries()){ | |
795 | tracks[j1] = pList->GetTrack(r,c,j1); | |
796 | hits[j1] = pList->GetHit(r,c,j1); | |
797 | //}else{ | |
798 | //tracks[j1] = -3; | |
799 | //hits[j1] = -1; | |
800 | } // end if | |
801 | //charges[j1] = 0; | |
802 | } // end for j1 | |
803 | Float_t phys = 0; | |
804 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); | |
f77f13c8 | 805 | AliDebug(1,Form("mod=%d r,c=%d,%d sig=%f noise=%f Msig=%d Thres=%f", |
806 | fModule,r,c,fpList->GetSignalOnly(r,c),fpList->GetNoise(r,c), | |
807 | signal,GetThreshold())); | |
aacedc3e | 808 | } // end if of threshold condition |
809 | } // for c | |
c7a4dac0 | 810 | }// end do on pixels |
5c5273c2 | 811 | delete [] digits; |
812 | delete [] tracks; | |
813 | delete [] hits; | |
814 | delete [] charges; | |
21b825a4 | 815 | } |
c7a4dac0 | 816 | //______________________________________________________________________ |
817 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
818 | // Set the electronic noise and threshold non-uniformities to all the | |
819 | // pixels in a detector. | |
820 | // The parameter fSigma is the squared sum of the sigma due to noise | |
821 | // and the sigma of the threshold distribution among pixels. | |
aacedc3e | 822 | // Inputs: |
823 | // Int_t module modulel number | |
824 | // AliITSpList *pList the array of SDigits | |
825 | // Outputs: | |
826 | // AliITSpList *pList the array of SDigits | |
827 | // Return: | |
828 | // none. | |
c7a4dac0 | 829 | // |
830 | //Begin_Html | |
831 | /* | |
832 | <img src="picts/ITS/barimodel_1.gif"> | |
833 | </pre> | |
834 | <br clear=left> | |
835 | <font size=+2 color=red> | |
836 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
837 | </font> | |
838 | <pre> | |
839 | */ | |
840 | //End_Html | |
aacedc3e | 841 | Double_t thr=0.0,sigm=0.0; |
c7a4dac0 | 842 | Double_t signal,sigma; |
843 | Int_t iz,ix; | |
844 | ||
845 | GetThresholds(thr,sigm); | |
846 | sigma = (Double_t) sigm; | |
847 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
aacedc3e | 848 | for(ix=1;ix<=GetNPixelsX();ix++){ |
849 | signal = sigma*gRandom->Gaus(); | |
850 | fMapA2->SetHit(iz,ix,signal); | |
851 | // insert in the label-signal-hit list the pixels fired | |
852 | // only by noise | |
853 | pList->AddNoise(iz,ix,module,signal); | |
854 | } // end of loop on pixels | |
21b825a4 | 855 | } // end of loop on pixels |
c7a4dac0 | 856 | } |
857 | //______________________________________________________________________ | |
858 | void AliITSsimulationSPD::SetMask() { | |
859 | // Apply a mask to the SPD module. 1% of the pixel channels are | |
860 | // masked. When the database will be ready, the masked pixels | |
861 | // should be read from it. | |
aacedc3e | 862 | // Inputs: |
863 | // none. | |
864 | // Outputs: | |
865 | // none. | |
866 | // Return: | |
867 | // none. | |
c7a4dac0 | 868 | Double_t signal; |
869 | Int_t iz,ix,im; | |
870 | Float_t totMask; | |
871 | Float_t perc = ((AliITSresponseSPD*)fResponse)->GetFractionDead(); | |
872 | // in this way we get the same set of random numbers for all runs. | |
873 | // This is a cluge for now. | |
874 | static TRandom *rnd = new TRandom(); | |
875 | ||
876 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
877 | for(im=1;im<totMask;im++){ | |
aacedc3e | 878 | do{ |
879 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
880 | } while(ix<=0 || ix>GetNPixelsX()); | |
881 | do{ | |
882 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
883 | } while(iz<=0 || iz>GetNPixelsZ()); | |
884 | signal = -1.; | |
885 | fMapA2->SetHit(iz,ix,signal); | |
c7a4dac0 | 886 | } // end loop on masked pixels |
887 | } | |
888 | //______________________________________________________________________ | |
21b825a4 | 889 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 890 | // Create Histograms |
aacedc3e | 891 | // Inputs: |
892 | // none. | |
893 | // Outputs: | |
894 | // none. | |
895 | // Return: | |
896 | // none. | |
c7a4dac0 | 897 | Int_t i; |
21b825a4 | 898 | |
c7a4dac0 | 899 | fHis=new TObjArray(GetNPixelsZ()); |
900 | for(i=0;i<GetNPixelsZ();i++) { | |
aacedc3e | 901 | TString spdname("spd_"); |
902 | Char_t candnum[4]; | |
903 | sprintf(candnum,"%d",i+1); | |
904 | spdname.Append(candnum); | |
905 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
906 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
c7a4dac0 | 907 | } // end for i |
b0f5e3fc | 908 | } |
c7a4dac0 | 909 | //______________________________________________________________________ |
21b825a4 | 910 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 911 | // Reset histograms for this detector |
aacedc3e | 912 | // Inputs: |
913 | // none. | |
914 | // Outputs: | |
915 | // none. | |
916 | // Return: | |
917 | // none. | |
21b825a4 | 918 | Int_t i; |
b0f5e3fc | 919 | |
c7a4dac0 | 920 | for(i=0;i<GetNPixelsZ();i++ ) { |
aacedc3e | 921 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); |
c7a4dac0 | 922 | } // end for i |
923 | } | |
924 | //______________________________________________________________________ | |
925 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
926 | // Fills the Summable digits Tree | |
aacedc3e | 927 | // Inputs: |
928 | // AliITSpList *pList the array of SDigits | |
929 | // Outputs: | |
930 | // AliITSpList *pList the array of SDigits | |
931 | // Return: | |
932 | // none. | |
c7a4dac0 | 933 | Int_t i,ni,j,nj; |
934 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
935 | ||
936 | pList->GetMaxMapIndex(ni,nj); | |
937 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
aacedc3e | 938 | if(pList->GetSignalOnly(i,j)>0.0){ |
939 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
f77f13c8 | 940 | if(AliDebugLevel()){ |
aacedc3e | 941 | cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; |
f77f13c8 | 942 | AliDebug(1,Form("mod=%s r,c=%d %d sig=%f noise=%f", |
943 | fModule,i,j,fpList->GetSignalOnly(i,j),fpList->GetNoise(i,j))) | |
aacedc3e | 944 | } // end if GetDebug |
945 | } // end if | |
c7a4dac0 | 946 | } // end for i,j |
947 | return; | |
948 | } | |
949 | //______________________________________________________________________ | |
950 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
951 | // Fills fMap2A from the pList of Summable digits | |
aacedc3e | 952 | // Inputs: |
953 | // AliITSpList *pList the array of SDigits | |
954 | // Outputs: | |
955 | // AliITSpList *pList the array of SDigits | |
956 | // Return: | |
957 | // none. | |
3a97c582 | 958 | Int_t ix,iz; |
c7a4dac0 | 959 | |
3a97c582 | 960 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
961 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 962 | return; |
b0f5e3fc | 963 | } |