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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 | |
b0f5e3fc | 18 | #include <TRandom.h> |
19 | #include <TH1.h> | |
9f033001 | 20 | #include <TString.h> |
e8189707 | 21 | |
b0f5e3fc | 22 | #include "AliRun.h" |
e8189707 | 23 | #include "AliITS.h" |
e869281d | 24 | #include "AliITSdigitSPD.h" |
9f033001 | 25 | #include "AliITSmodule.h" |
21b825a4 | 26 | #include "AliITSMapA2.h" |
c7a4dac0 | 27 | #include "AliITSpList.h" |
b0f5e3fc | 28 | #include "AliITSsimulationSPD.h" |
f77f13c8 | 29 | #include "AliLog.h" |
9f033001 | 30 | |
bb6b39bf | 31 | //#define DEBUG |
e8189707 | 32 | |
b0f5e3fc | 33 | ClassImp(AliITSsimulationSPD) |
34 | //////////////////////////////////////////////////////////////////////// | |
35 | // Version: 0 | |
21b825a4 | 36 | // Written by Rocco Caliandro |
37 | // from a model developed with T. Virgili and R.A. Fini | |
38 | // June 15 2000 | |
b0f5e3fc | 39 | // |
40 | // AliITSsimulationSPD is the simulation of SPDs | |
21b825a4 | 41 | // |
c7a4dac0 | 42 | //______________________________________________________________________ |
aacedc3e | 43 | AliITSsimulationSPD::AliITSsimulationSPD() : AliITSsimulation(), |
44 | fMapA2(0), | |
45 | fHis(0){ | |
c7a4dac0 | 46 | // Default constructor |
aacedc3e | 47 | // Inputs: |
48 | // none. | |
49 | // Outputs: | |
50 | // none. | |
51 | // Return: | |
52 | // A default constructed AliITSsimulationSPD class. | |
b0f5e3fc | 53 | } |
c7a4dac0 | 54 | //______________________________________________________________________ |
8ba39da9 | 55 | AliITSsimulationSPD::AliITSsimulationSPD(AliITSDetTypeSim *dettyp): |
56 | AliITSsimulation(dettyp), | |
aacedc3e | 57 | fMapA2(0), |
58 | fHis(0){ | |
c7a4dac0 | 59 | // Standard constructor |
aacedc3e | 60 | // Inputs: |
61 | // AliITSsegmentation *seg Segmentation class to be used | |
62 | // AliITSresonse *res Response class to be used | |
63 | // Outputs: | |
64 | // none. | |
65 | // Return: | |
66 | // A standard constructed AliITSsimulationSPD class. | |
67 | ||
68 | Init(); | |
69 | } | |
70 | //______________________________________________________________________ | |
71 | void AliITSsimulationSPD::Init() { | |
72 | // Initilizes the variables of AliITSsimulation SPD. | |
73 | // Inputs: | |
74 | // none. | |
75 | // Outputs: | |
76 | // none. | |
77 | // Return: | |
78 | // none. | |
c7a4dac0 | 79 | |
aacedc3e | 80 | fHis = 0; |
81 | if(fMapA2) delete fMapA2; | |
8ba39da9 | 82 | AliITSsegmentationSPD* seg = (AliITSsegmentationSPD*)GetSegmentationModel(0); |
83 | fMapA2 = new AliITSMapA2(seg); | |
aacedc3e | 84 | if(fpList) delete fpList; |
85 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); | |
b0f5e3fc | 86 | } |
8ba39da9 | 87 | /* |
c7a4dac0 | 88 | //______________________________________________________________________ |
89 | void AliITSsimulationSPD::Init(AliITSsegmentationSPD *seg, | |
fcf95fc7 | 90 | AliITSCalibrationSPD *resp) { |
c7a4dac0 | 91 | // Initilizes the variables of AliITSsimulation SPD. |
aacedc3e | 92 | // Inputs: |
93 | // AliITSsegmentationSPD replacement segmentation class to be used | |
94 | // aliITSresponseSPD replacement response class to be used | |
95 | // Outputs: | |
96 | // none. | |
97 | // Return: | |
98 | // none. | |
c7a4dac0 | 99 | |
aacedc3e | 100 | if(fHis){ |
101 | fHis->Delete(); | |
102 | delete fHis; | |
103 | } // end if fHis | |
c7a4dac0 | 104 | fHis = 0; |
aacedc3e | 105 | if(fResponse) delete fResponse; |
c7a4dac0 | 106 | fResponse = resp; |
8ba39da9 | 107 | if(GetSegmentationModel(0)) delete GetSegmentationModel(0); |
108 | GetSegmentationModel(0) = seg; | |
aacedc3e | 109 | if(fMapA2) delete fMapA2; |
8ba39da9 | 110 | fMapA2 = new AliITSMapA2(GetSegmentationModel(0)); |
aacedc3e | 111 | if(fpList) delete fpList; |
3a97c582 | 112 | fpList = new AliITSpList(GetNPixelsZ()+1,GetNPixelsX()+1); |
c7a4dac0 | 113 | } |
8ba39da9 | 114 | */ |
c7a4dac0 | 115 | //______________________________________________________________________ |
b0f5e3fc | 116 | AliITSsimulationSPD::~AliITSsimulationSPD() { |
c7a4dac0 | 117 | // destructor |
aacedc3e | 118 | // Inputs: |
119 | // none. | |
120 | // Outputs: | |
121 | // none. | |
122 | // Return: | |
123 | // none. | |
b0f5e3fc | 124 | |
aacedc3e | 125 | if(fMapA2) delete fMapA2; |
c7a4dac0 | 126 | if (fHis) { |
aacedc3e | 127 | fHis->Delete(); |
128 | delete fHis; | |
c7a4dac0 | 129 | } // end if |
b0f5e3fc | 130 | } |
c7a4dac0 | 131 | //______________________________________________________________________ |
ac74f489 | 132 | AliITSsimulationSPD::AliITSsimulationSPD(const AliITSsimulationSPD &source) : |
133 | AliITSsimulation(source){ | |
c7a4dac0 | 134 | // Copy Constructor |
aacedc3e | 135 | // Inputs: |
136 | // none. | |
137 | // Outputs: | |
138 | // none. | |
139 | // Return: | |
140 | // A new AliITSsimulationSPD class with the same parameters as source. | |
c7a4dac0 | 141 | |
142 | if(&source == this) return; | |
143 | ||
144 | this->fMapA2 = source.fMapA2; | |
145 | this->fHis = source.fHis; | |
c7a4dac0 | 146 | return; |
b0f5e3fc | 147 | } |
c7a4dac0 | 148 | //______________________________________________________________________ |
149 | AliITSsimulationSPD& AliITSsimulationSPD::operator=(const AliITSsimulationSPD | |
150 | &source) { | |
151 | // Assignment operator | |
aacedc3e | 152 | // Inputs: |
153 | // none. | |
154 | // Outputs: | |
155 | // none. | |
156 | // Return: | |
157 | // A new AliITSsimulationSPD class with the same parameters as source. | |
c7a4dac0 | 158 | |
159 | if(&source == this) return *this; | |
160 | ||
161 | this->fMapA2 = source.fMapA2; | |
162 | this->fHis = source.fHis; | |
c7a4dac0 | 163 | return *this; |
3a97c582 | 164 | } |
d2f55a22 | 165 | //______________________________________________________________________ |
5402d9ca | 166 | AliITSsimulation& AliITSsimulationSPD::operator=(const AliITSsimulation |
d2f55a22 | 167 | &source) { |
168 | // Assignment operator | |
169 | // Inputs: | |
170 | // none. | |
171 | // Outputs: | |
172 | // none. | |
173 | // Return: | |
174 | // A new AliITSsimulationSPD class with the same parameters as source. | |
175 | ||
176 | if(&source == this) return *this; | |
177 | Error("AliITSsimulationSPD","Not allowed to make a = with " | |
178 | "AliITSsimulationSPD Using default creater instead"); | |
179 | ||
180 | return *this; | |
181 | } | |
182 | ||
3a97c582 | 183 | //______________________________________________________________________ |
184 | void AliITSsimulationSPD::InitSimulationModule(Int_t module,Int_t event){ | |
185 | // Creates maps to build the list of tracks for each sumable digit | |
186 | // Inputs: | |
187 | // Int_t module // Module number to be simulated | |
188 | // Int_t event // Event number to be simulated | |
189 | // Outputs: | |
190 | // none. | |
191 | // Return | |
192 | // none. | |
193 | ||
194 | fModule = module; | |
195 | fEvent = event; | |
196 | fMapA2->ClearMap(); | |
197 | fpList->ClearMap(); | |
198 | } | |
199 | //______________________________________________________________________ | |
200 | void AliITSsimulationSPD::FinishSDigitiseModule(){ | |
201 | // Does the Sdigits to Digits work | |
202 | // Inputs: | |
203 | // none. | |
204 | // Outputs: | |
205 | // none. | |
206 | // Return: | |
207 | // none. | |
208 | ||
209 | SDigitsToDigits(fModule,fpList); | |
c7a4dac0 | 210 | } |
211 | //______________________________________________________________________ | |
212 | void AliITSsimulationSPD::SDigitiseModule(AliITSmodule *mod, Int_t dummy0, | |
213 | Int_t dummy1) { | |
214 | // Sum digitize module | |
aacedc3e | 215 | // Inputs: |
216 | // AliITSmodule *mod The module to be SDgitized | |
217 | // Int_t dummy0 Not used kept for general compatibility | |
218 | // Int_t dummy1 Not used kept for general compatibility | |
219 | // Outputs: | |
220 | // none. | |
221 | // Return: | |
222 | // none. | |
c7a4dac0 | 223 | if (!(mod->GetNhits())) return; // if module has no hits then no Sdigits. |
224 | Int_t number = 10000; | |
225 | Int_t *frowpixel = new Int_t[number]; | |
226 | Int_t *fcolpixel = new Int_t[number]; | |
227 | Double_t *fenepixel = new Double_t[number]; | |
228 | ||
ac74f489 | 229 | dummy0 = dummy1; // remove unsued variable warning. |
3a97c582 | 230 | fModule = mod->GetIndex(); |
231 | ||
c7a4dac0 | 232 | // Array of pointers to store the track index of the digits |
233 | // leave +1, otherwise pList crashes when col=256, row=192 | |
c7a4dac0 | 234 | |
3a97c582 | 235 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
c7a4dac0 | 236 | |
3a97c582 | 237 | WriteSDigits(fpList); |
c7a4dac0 | 238 | |
239 | // clean memory | |
240 | delete[] frowpixel; | |
241 | delete[] fcolpixel; | |
242 | delete[] fenepixel; | |
243 | fMapA2->ClearMap(); | |
3a97c582 | 244 | fpList->ClearMap(); |
c7a4dac0 | 245 | } |
246 | //______________________________________________________________________ | |
aacedc3e | 247 | void AliITSsimulationSPD::DigitiseModule(AliITSmodule *mod, Int_t,Int_t) { |
c7a4dac0 | 248 | // digitize module. Also need to digitize modules with only noise. |
aacedc3e | 249 | // Inputs: |
250 | // AliITSmodule *mod The module to be SDgitized | |
251 | // Outputs: | |
252 | // none. | |
253 | // Return: | |
254 | // none. | |
b0f5e3fc | 255 | |
c7a4dac0 | 256 | Int_t number = 10000; |
257 | Int_t *frowpixel = new Int_t[number]; | |
258 | Int_t *fcolpixel = new Int_t[number]; | |
259 | Double_t *fenepixel = new Double_t[number]; | |
b0f5e3fc | 260 | |
c7a4dac0 | 261 | // Array of pointers to store the track index of the digits |
3a97c582 | 262 | // leave +1, otherwise pList crashes when col=256, row=192 |
263 | fModule = mod->GetIndex(); | |
c7a4dac0 | 264 | // noise setting |
3a97c582 | 265 | SetFluctuations(fpList,fModule); |
b0f5e3fc | 266 | |
3a97c582 | 267 | HitsToAnalogDigits(mod,frowpixel,fcolpixel,fenepixel,fpList); |
21b825a4 | 268 | |
c7a4dac0 | 269 | // apply mask to SPD module |
8ba39da9 | 270 | SetMask(fModule); |
21b825a4 | 271 | |
3a97c582 | 272 | CreateDigit(fModule,fpList); |
b0f5e3fc | 273 | |
c7a4dac0 | 274 | // clean memory |
275 | delete[] frowpixel; | |
276 | delete[] fcolpixel; | |
277 | delete[] fenepixel; | |
278 | fMapA2->ClearMap(); | |
3a97c582 | 279 | fpList->ClearMap(); |
21b825a4 | 280 | } |
c7a4dac0 | 281 | //______________________________________________________________________ |
282 | void AliITSsimulationSPD::SDigitsToDigits(Int_t module,AliITSpList *pList) { | |
283 | // sum digits to Digits. | |
aacedc3e | 284 | // Inputs: |
285 | // AliITSmodule *mod The module to be SDgitized | |
286 | // AliITSpList *pList the array of SDigits | |
287 | // Outputs: | |
288 | // AliITSpList *pList the array of SDigits | |
289 | // Return: | |
290 | // none. | |
bb6b39bf | 291 | |
f77f13c8 | 292 | AliDebug(1,Form("Entering AliITSsimulatinSPD::SDigitsToDigits for module=%d", |
293 | module)); | |
3a97c582 | 294 | fModule = module; |
b0f5e3fc | 295 | |
c7a4dac0 | 296 | // noise setting |
297 | SetFluctuations(pList,module); | |
b0f5e3fc | 298 | |
3a97c582 | 299 | fMapA2->ClearMap(); // since noise is in pList aready. Zero Map so that |
300 | // noise is not doubled when calling FillMapFrompList. | |
301 | ||
302 | FillMapFrompList(pList); | |
303 | ||
c7a4dac0 | 304 | // apply mask to SPD module |
8ba39da9 | 305 | SetMask(fModule); |
21b825a4 | 306 | |
c7a4dac0 | 307 | CreateDigit(module,pList); |
3a97c582 | 308 | |
309 | fMapA2->ClearMap(); | |
310 | pList->ClearMap(); | |
c7a4dac0 | 311 | } |
312 | //______________________________________________________________________ | |
313 | void AliITSsimulationSPD::UpdateMapSignal(Int_t row,Int_t col,Int_t trk, | |
314 | Int_t hit,Int_t mod,Double_t ene, | |
315 | AliITSpList *pList) { | |
316 | // updates the Map of signal, adding the energy (ene) released by | |
317 | // the current track | |
aacedc3e | 318 | // Inputs: |
319 | // Int_t row pixel row number | |
320 | // Int_t col pixel column number | |
321 | // Int_t trk track number which contributed | |
322 | // Int_t hit hit number which contributed | |
323 | // Int_t mod module number | |
324 | // Double_t ene the energy associated with this contribution | |
325 | // AliITSpList *pList the array of SDigits | |
326 | // Outputs: | |
327 | // AliITSpList *pList the array of SDigits | |
328 | // Return: | |
329 | // none. | |
c7a4dac0 | 330 | |
331 | fMapA2->AddSignal(row,col,ene); | |
332 | pList->AddSignal(row,col,trk,hit,mod,ene); | |
333 | } | |
334 | //______________________________________________________________________ | |
335 | void AliITSsimulationSPD::UpdateMapNoise(Int_t row,Int_t col,Int_t mod, | |
336 | Double_t ene,AliITSpList *pList) { | |
337 | // updates the Map of noise, adding the energy (ene) give my noise | |
aacedc3e | 338 | // Inputs: |
339 | // Int_t row pixel row number | |
340 | // Int_t col pixel column number | |
341 | // Int_t mod module number | |
342 | // Double_t ene the energy associated with this contribution | |
343 | // AliITSpList *pList the array of SDigits | |
344 | // Outputs: | |
345 | // AliITSpList *pList the array of SDigits | |
346 | // Return: | |
347 | // none. | |
21b825a4 | 348 | |
c7a4dac0 | 349 | fMapA2->AddSignal(row,col,ene); |
350 | pList->AddNoise(row,col,mod,ene); | |
351 | } | |
352 | //______________________________________________________________________ | |
353 | void AliITSsimulationSPD::HitsToAnalogDigits(AliITSmodule *mod, | |
354 | Int_t *frowpixel,Int_t *fcolpixel, | |
355 | Double_t *fenepixel, | |
356 | AliITSpList *pList) { | |
357 | // Loops over all hits to produce Analog/floting point digits. This | |
358 | // is also the first task in producing standard digits. | |
aacedc3e | 359 | // Inputs: |
360 | // AliITSmodule *mod module class | |
361 | // Int_t *frowpixel array of pixel rows | |
362 | // Int_t *fcolpixel array of pixel columns | |
363 | // Double_t *fenepiexel array of pixel energies | |
364 | // AliITSpList *pList the array of SDigits | |
365 | // Outputs: | |
366 | // AliITSpList *pList the array of SDigits | |
367 | // Return: | |
368 | // none. | |
21b825a4 | 369 | |
c7a4dac0 | 370 | // loop over hits in the module |
371 | Int_t hitpos,nhits = mod->GetNhits(); | |
372 | for (hitpos=0;hitpos<nhits;hitpos++) { | |
aacedc3e | 373 | HitToDigit(mod,hitpos,frowpixel,fcolpixel,fenepixel,pList); |
c7a4dac0 | 374 | }// end loop over digits |
375 | } | |
376 | //______________________________________________________________________ | |
377 | void AliITSsimulationSPD::HitToDigit(AliITSmodule *mod,Int_t hitpos, | |
378 | Int_t *frowpixel,Int_t *fcolpixel, | |
379 | Double_t *fenepixel,AliITSpList *pList) { | |
380 | // Steering function to determine the digits associated to a given | |
381 | // hit (hitpos) | |
382 | // The digits are created by charge sharing (ChargeSharing) and by | |
383 | // capacitive coupling (SetCoupling). At all the created digits is | |
384 | // associated the track number of the hit (ntrack) | |
aacedc3e | 385 | // Inputs: |
386 | // AliITSmodule *mod module class | |
387 | // Int_t hitpos hit index value | |
388 | // Int_t *frowpixel array of pixel rows | |
389 | // Int_t *fcolpixel array of pixel columns | |
390 | // Double_t *fenepiexel array of pixel energies | |
391 | // AliITSpList *pList the array of SDigits | |
392 | // Outputs: | |
393 | // AliITSpList *pList the array of SDigits | |
394 | // Return: | |
395 | // none. | |
c7a4dac0 | 396 | Double_t x1l=0.0,y1l=0.0,z1l=0.0,x2l=0.0,y2l=0.0,z2l=0.0; |
397 | Int_t r1,r2,c1,c2,row,col,npixel = 0; | |
398 | Int_t ntrack; | |
399 | Double_t ene=0.0,etot=0.0; | |
400 | const Float_t kconv = 10000.; // cm -> microns | |
401 | const Float_t kconv1= 0.277e9; // GeV -> electrons equivalent | |
402 | ||
403 | if(!(mod->LineSegmentL(hitpos,x1l,x2l,y1l,y2l,z1l,z2l,etot,ntrack)))return; | |
404 | ||
405 | x2l += x1l; y2l += y1l; z2l += z1l; // Convert to ending coordinate. | |
406 | // positions shifted and converted in microns | |
8ba39da9 | 407 | x1l = x1l*kconv + GetSegmentationModel(0)->Dx()/2.; |
408 | z1l = z1l*kconv + GetSegmentationModel(0)->Dz()/2.; | |
c7a4dac0 | 409 | // positions shifted and converted in microns |
8ba39da9 | 410 | x2l = x2l*kconv + GetSegmentationModel(0)->Dx()/2.; |
411 | z2l = z2l*kconv + GetSegmentationModel(0)->Dz()/2.; | |
c7a4dac0 | 412 | etot *= kconv1; // convert from GeV to electrons equivalent. |
413 | Int_t module = mod->GetIndex(); | |
414 | ||
415 | // to account for the effective sensitive area | |
416 | // introduced in geometry | |
8ba39da9 | 417 | if (z1l<0 || z1l>GetSegmentationModel(0)->Dz()) return; |
418 | if (z2l<0 || z2l>GetSegmentationModel(0)->Dz()) return; | |
419 | if (x1l<0 || x1l>GetSegmentationModel(0)->Dx()) return; | |
420 | if (x2l<0 || x2l>GetSegmentationModel(0)->Dx()) return; | |
c7a4dac0 | 421 | |
422 | //Get the col and row number starting from 1 | |
423 | // the x direction is not inverted for the second layer!!! | |
8ba39da9 | 424 | GetSegmentationModel(0)->GetPadIxz(x1l, z1l, c1, r1); |
425 | GetSegmentationModel(0)->GetPadIxz(x2l, z2l, c2, r2); | |
c7a4dac0 | 426 | |
427 | // to account for unexpected equal entrance and | |
428 | // exit coordinates | |
0fee5d51 | 429 | if (x1l==x2l) x2l=x2l+x2l*0.1; |
430 | if (z1l==z2l) z2l=z2l+z2l*0.1; | |
c7a4dac0 | 431 | |
432 | if ((r1==r2) && (c1==c2)){ | |
aacedc3e | 433 | // no charge sharing |
434 | npixel = 1; | |
435 | frowpixel[npixel-1] = r1; | |
436 | fcolpixel[npixel-1] = c1; | |
437 | fenepixel[npixel-1] = etot; | |
c7a4dac0 | 438 | } else { |
aacedc3e | 439 | // charge sharing |
440 | ChargeSharing(x1l,z1l,x2l,z2l,c1,r1,c2,r2,etot, | |
441 | npixel,frowpixel,fcolpixel,fenepixel); | |
c7a4dac0 | 442 | } // end if r1==r2 && c1==c2. |
443 | ||
444 | for (Int_t npix=0;npix<npixel;npix++){ | |
aacedc3e | 445 | row = frowpixel[npix]; |
446 | col = fcolpixel[npix]; | |
447 | ene = fenepixel[npix]; | |
448 | UpdateMapSignal(row,col,ntrack,hitpos,module,ene,pList); | |
449 | // Starting capacitive coupling effect | |
450 | SetCoupling(row,col,ntrack,hitpos,module,pList); | |
c7a4dac0 | 451 | } // end for npix |
452 | } | |
453 | //______________________________________________________________________ | |
454 | void AliITSsimulationSPD::ChargeSharing(Float_t x1l,Float_t z1l,Float_t x2l, | |
455 | Float_t z2l,Int_t c1,Int_t r1,Int_t c2, | |
456 | Int_t r2,Float_t etot, | |
457 | Int_t &npixel,Int_t *frowpixel, | |
458 | Int_t *fcolpixel,Double_t *fenepixel){ | |
459 | // Take into account the geometrical charge sharing when the track | |
460 | // crosses more than one pixel. | |
aacedc3e | 461 | // Inputs: |
462 | // Float_t x1l | |
463 | // Float_t z1l | |
464 | // Float_t x2l | |
465 | // Float_t z2l | |
466 | // Int_t c1 | |
467 | // Int_t r1 | |
468 | // Int_t c2 | |
469 | // Int_t r2 | |
470 | // Float_t etot | |
471 | // Int_t &npixel | |
472 | // Int_t *frowpixel array of pixel rows | |
473 | // Int_t *fcolpixel array of pixel columns | |
474 | // Double_t *fenepiexel array of pixel energies | |
475 | // Outputs: | |
476 | // Int_t &npixel | |
477 | // Return: | |
478 | // none. | |
c7a4dac0 | 479 | // |
480 | //Begin_Html | |
21b825a4 | 481 | /* |
c7a4dac0 | 482 | <img src="picts/ITS/barimodel_2.gif"> |
483 | </pre> | |
484 | <br clear=left> | |
485 | <font size=+2 color=red> | |
486 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
487 | </font> | |
488 | <pre> | |
21b825a4 | 489 | */ |
c7a4dac0 | 490 | //End_Html |
ee86d557 | 491 | //Float_t dm; |
492 | Float_t xa,za,xb,zb,dx,dz,dtot,refr,refm,refc; | |
c7a4dac0 | 493 | Float_t refn=0.; |
494 | Float_t arefm, arefr, arefn, arefc, azb, az2l, axb, ax2l; | |
495 | Int_t dirx,dirz,rb,cb; | |
496 | Int_t flag,flagrow,flagcol; | |
497 | Double_t epar; | |
498 | ||
499 | npixel = 0; | |
500 | xa = x1l; | |
501 | za = z1l; | |
cf6105a4 | 502 | // dx = x1l-x2l; |
503 | // dz = z1l-z2l; | |
504 | dx = x2l-x1l; | |
505 | dz = z2l-z1l; | |
c7a4dac0 | 506 | dtot = TMath::Sqrt((dx*dx)+(dz*dz)); |
d709f420 | 507 | if (dtot==0.0) dtot = 0.01; |
508 | dirx = (Int_t) TMath::Sign((Float_t)1,dx); | |
509 | dirz = (Int_t) TMath::Sign((Float_t)1,dz); | |
c7a4dac0 | 510 | |
511 | // calculate the x coordinate of the pixel in the next column | |
512 | // and the z coordinate of the pixel in the next row | |
513 | Float_t xpos, zpos; | |
514 | ||
8ba39da9 | 515 | GetSegmentationModel(0)->GetPadCxz(c1, r1-1, xpos, zpos); |
c7a4dac0 | 516 | |
8ba39da9 | 517 | Float_t xsize = GetSegmentationModel(0)->Dpx(0); |
518 | Float_t zsize = GetSegmentationModel(0)->Dpz(r1-1); | |
21b825a4 | 519 | |
c7a4dac0 | 520 | if (dirx == 1) refr = xpos+xsize/2.; |
521 | else refr = xpos-xsize/2.; | |
522 | ||
523 | if (dirz == 1) refn = zpos+zsize/2.; | |
524 | else refn = zpos-zsize/2.; | |
525 | ||
526 | flag = 0; | |
527 | flagrow = 0; | |
528 | flagcol = 0; | |
529 | do{ | |
aacedc3e | 530 | // calculate the x coordinate of the intersection with the pixel |
531 | // in the next cell in row direction | |
532 | if(dz!=0) | |
533 | refm = dx*((refn - z1l)/dz) + x1l; | |
534 | else | |
535 | refm = refr+dirx*xsize; | |
536 | ||
537 | // calculate the z coordinate of the intersection with the pixel | |
538 | // in the next cell in column direction | |
539 | if (dx!=0) | |
540 | refc = dz*((refr - x1l)/dx) + z1l; | |
541 | else | |
542 | refc = refn+dirz*zsize; | |
543 | ||
544 | arefm = refm * dirx; | |
545 | arefr = refr * dirx; | |
546 | arefn = refn * dirz; | |
547 | arefc = refc * dirz; | |
548 | ||
549 | if ((arefm < arefr) && (arefn < arefc)){ | |
550 | // the track goes in the pixel in the next cell in row direction | |
551 | xb = refm; | |
552 | zb = refn; | |
553 | cb = c1; | |
554 | rb = r1 + dirz; | |
555 | azb = zb * dirz; | |
556 | az2l = z2l * dirz; | |
557 | if (rb == r2) flagrow=1; | |
558 | if (azb > az2l) { | |
559 | zb = z2l; | |
560 | xb = x2l; | |
561 | } // end if | |
562 | // shift to the pixel in the next cell in row direction | |
8ba39da9 | 563 | Float_t zsizeNext = GetSegmentationModel(0)->Dpz(rb-1); |
aacedc3e | 564 | //to account for cell at the borders of the detector |
565 | if(zsizeNext==0) zsizeNext = zsize; | |
566 | refn += zsizeNext*dirz; | |
567 | }else { | |
568 | // the track goes in the pixel in the next cell in column direction | |
569 | xb = refr; | |
570 | zb = refc; | |
571 | cb = c1 + dirx; | |
572 | rb = r1; | |
573 | axb = xb * dirx; | |
574 | ax2l = x2l * dirx; | |
575 | if (cb == c2) flagcol=1; | |
576 | if (axb > ax2l) { | |
577 | zb = z2l; | |
578 | xb = x2l; | |
579 | } // end ifaxb > ax2l | |
580 | ||
581 | // shift to the pixel in the next cell in column direction | |
8ba39da9 | 582 | Float_t xsizeNext = GetSegmentationModel(0)->Dpx(cb-1); |
aacedc3e | 583 | //to account for cell at the borders of the detector |
584 | if(xsizeNext==0) xsizeNext = xsize; | |
585 | refr += xsizeNext*dirx; | |
586 | } // end if (arefm < arefr) && (arefn < arefc) | |
587 | ||
588 | //calculate the energy lost in the crossed pixel | |
589 | epar = TMath::Sqrt((xb-xa)*(xb-xa)+(zb-za)*(zb-za)); | |
590 | epar = etot*(epar/dtot); | |
591 | ||
592 | //store row, column and energy lost in the crossed pixel | |
593 | frowpixel[npixel] = r1; | |
594 | fcolpixel[npixel] = c1; | |
595 | fenepixel[npixel] = epar; | |
596 | npixel++; | |
597 | ||
598 | // the exit point of the track is reached | |
599 | if (epar == 0) flag = 1; | |
600 | if ((r1 == r2) && (c1 == c2)) flag = 1; | |
601 | if (flag!=1) { | |
602 | r1 = rb; | |
603 | c1 = cb; | |
604 | xa = xb; | |
605 | za = zb; | |
606 | } // end if flag!=1 | |
c7a4dac0 | 607 | } while (flag==0); |
21b825a4 | 608 | } |
c7a4dac0 | 609 | //______________________________________________________________________ |
21b825a4 | 610 | void AliITSsimulationSPD::SetCoupling(Int_t row, Int_t col, Int_t ntrack, |
c7a4dac0 | 611 | Int_t idhit,Int_t module, |
612 | AliITSpList *pList) { | |
613 | // Take into account the coupling between adiacent pixels. | |
f8d9a5b8 | 614 | // The parameters probcol and probrow are the probability of the |
615 | // signal in one pixel shared in the two adjacent pixels along | |
616 | // the column and row direction, respectively. | |
aacedc3e | 617 | // Inputs: |
618 | // Int_t row pixel row number | |
619 | // Int_t col pixel column number | |
620 | // Int_t ntrack track number of track contributing to this signal | |
621 | // Int_t idhit hit number of hit contributing to this signal | |
622 | // Int_t module module number | |
623 | // AliITSpList *pList the array of SDigits | |
624 | // Outputs: | |
625 | // AliITSpList *pList the array of SDigits | |
626 | // Return: | |
627 | // none. | |
f8d9a5b8 | 628 | // |
629 | //Begin_Html | |
630 | /* | |
631 | <img src="picts/ITS/barimodel_3.gif"> | |
632 | </pre> | |
633 | <br clear=left> | |
634 | <font size=+2 color=red> | |
635 | <a href="mailto:tiziano.virgili@cern.ch"></a>. | |
636 | </font> | |
637 | <pre> | |
638 | */ | |
639 | //End_Html | |
640 | Int_t j1,j2,flag=0; | |
641 | Double_t pulse1,pulse2; | |
aacedc3e | 642 | Double_t couplR=0.0,couplC=0.0; |
f8d9a5b8 | 643 | Double_t xr=0.; |
644 | ||
645 | GetCouplings(couplR,couplC); | |
646 | j1 = row; | |
647 | j2 = col; | |
648 | pulse1 = fMapA2->GetSignal(row,col); | |
649 | pulse2 = pulse1; | |
650 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 651 | do{ |
652 | j1 += isign; | |
653 | // pulse1 *= couplR; | |
654 | xr = gRandom->Rndm(); | |
655 | //if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
656 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){ | |
657 | j1 = row; | |
658 | flag = 1; | |
659 | }else{ | |
660 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
661 | // flag = 0; | |
662 | flag = 1; // only first next!! | |
663 | } // end if | |
664 | } while(flag == 0); | |
665 | // loop in column direction | |
666 | do{ | |
667 | j2 += isign; | |
668 | // pulse2 *= couplC; | |
669 | xr = gRandom->Rndm(); | |
670 | //if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
671 | if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){ | |
672 | j2 = col; | |
673 | flag = 1; | |
674 | }else{ | |
675 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
676 | // flag = 0; | |
677 | flag = 1; // only first next!! | |
678 | } // end if | |
679 | } while(flag == 0); | |
f8d9a5b8 | 680 | } // for isign |
681 | } | |
682 | //______________________________________________________________________ | |
683 | void AliITSsimulationSPD::SetCouplingOld(Int_t row, Int_t col, Int_t ntrack, | |
684 | Int_t idhit,Int_t module, | |
685 | AliITSpList *pList) { | |
686 | // Take into account the coupling between adiacent pixels. | |
c7a4dac0 | 687 | // The parameters probcol and probrow are the fractions of the |
688 | // signal in one pixel shared in the two adjacent pixels along | |
689 | // the column and row direction, respectively. | |
aacedc3e | 690 | // Inputs: |
691 | // Int_t row pixel row number | |
692 | // Int_t col pixel column number | |
693 | // Int_t ntrack track number of track contributing to this pixel | |
694 | // Int_t idhit hit index number of hit contributing to this pixel | |
695 | // Int_t module module number | |
696 | // AliITSpList *pList the array of SDigits | |
697 | // Outputs: | |
698 | // AliITSpList *pList the array of SDigits | |
699 | // Return: | |
700 | // none. | |
c7a4dac0 | 701 | // |
702 | //Begin_Html | |
703 | /* | |
704 | <img src="picts/ITS/barimodel_3.gif"> | |
705 | </pre> | |
706 | <br clear=left> | |
707 | <font size=+2 color=red> | |
708 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
709 | </font> | |
710 | <pre> | |
711 | */ | |
712 | //End_Html | |
713 | Int_t j1,j2,flag=0; | |
714 | Double_t pulse1,pulse2; | |
aacedc3e | 715 | Double_t couplR=0.0,couplC=0.0; |
c7a4dac0 | 716 | |
717 | GetCouplings(couplR,couplC); | |
718 | j1 = row; | |
719 | j2 = col; | |
720 | pulse1 = fMapA2->GetSignal(row,col); | |
721 | pulse2 = pulse1; | |
722 | for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction | |
aacedc3e | 723 | do{ |
724 | j1 += isign; | |
725 | pulse1 *= couplR; | |
726 | if ((j1<0) || (j1>GetNPixelsZ()-1) || (pulse1<GetThreshold())){ | |
727 | pulse1 = fMapA2->GetSignal(row,col); | |
728 | j1 = row; | |
729 | flag = 1; | |
730 | }else{ | |
731 | UpdateMapSignal(j1,col,ntrack,idhit,module,pulse1,pList); | |
732 | flag = 0; | |
733 | } // end if | |
734 | } while(flag == 0); | |
735 | // loop in column direction | |
736 | do{ | |
737 | j2 += isign; | |
738 | pulse2 *= couplC; | |
739 | if ((j2<0) || (j2>(GetNPixelsX()-1)) || (pulse2<GetThreshold())){ | |
740 | pulse2 = fMapA2->GetSignal(row,col); | |
741 | j2 = col; | |
742 | flag = 1; | |
743 | }else{ | |
744 | UpdateMapSignal(row,j2,ntrack,idhit,module,pulse2,pList); | |
745 | flag = 0; | |
746 | } // end if | |
747 | } while(flag == 0); | |
c7a4dac0 | 748 | } // for isign |
21b825a4 | 749 | } |
c7a4dac0 | 750 | //______________________________________________________________________ |
751 | void AliITSsimulationSPD::CreateDigit(Int_t module,AliITSpList *pList) { | |
752 | // The pixels are fired if the energy deposited inside them is above | |
753 | // the threshold parameter ethr. Fired pixed are interpreted as digits | |
754 | // and stored in the file digitfilename. One also needs to write out | |
755 | // cases when there is only noise (nhits==0). | |
aacedc3e | 756 | // Inputs: |
757 | // Int_t module | |
758 | // AliITSpList *pList the array of SDigits | |
759 | // Outputs: | |
760 | // AliITSpList *pList the array of SDigits | |
761 | // Return: | |
762 | // none. | |
c7a4dac0 | 763 | |
764 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
765 | ||
ee86d557 | 766 | Int_t size = AliITSdigitSPD::GetNTracks(); |
5c5273c2 | 767 | Int_t * digits = new Int_t[size]; |
768 | Int_t * tracks = new Int_t[size]; | |
769 | Int_t * hits = new Int_t[size]; | |
770 | Float_t * charges = new Float_t[size]; | |
c7a4dac0 | 771 | Int_t j1; |
772 | ||
ac74f489 | 773 | module=0; // remove unused variable warning. |
f8d9a5b8 | 774 | for(j1=0;j1<size;j1++){tracks[j1]=-3;hits[j1]=-1;charges[j1]=0.0;} |
c7a4dac0 | 775 | for (Int_t r=1;r<=GetNPixelsZ();r++) { |
aacedc3e | 776 | for (Int_t c=1;c<=GetNPixelsX();c++) { |
777 | // check if the deposited energy in a pixel is above the | |
778 | // threshold | |
779 | Float_t signal = (Float_t) fMapA2->GetSignal(r,c); | |
780 | if ( signal > GetThreshold()) { | |
781 | digits[0] = r-1; // digits starts from 0 | |
782 | digits[1] = c-1; // digits starts from 0 | |
783 | //digits[2] = 1; | |
784 | digits[2] = (Int_t) signal; // the signal is stored in | |
c7a4dac0 | 785 | // electrons |
aacedc3e | 786 | for(j1=0;j1<size;j1++){ |
9881a682 | 787 | if(j1<pList->GetNEntries()){ |
aacedc3e | 788 | tracks[j1] = pList->GetTrack(r,c,j1); |
789 | hits[j1] = pList->GetHit(r,c,j1); | |
790 | //}else{ | |
791 | //tracks[j1] = -3; | |
792 | //hits[j1] = -1; | |
793 | } // end if | |
794 | //charges[j1] = 0; | |
795 | } // end for j1 | |
796 | Float_t phys = 0; | |
797 | aliITS->AddSimDigit(0,phys,digits,tracks,hits,charges); | |
f77f13c8 | 798 | AliDebug(1,Form("mod=%d r,c=%d,%d sig=%f noise=%f Msig=%d Thres=%f", |
799 | fModule,r,c,fpList->GetSignalOnly(r,c),fpList->GetNoise(r,c), | |
800 | signal,GetThreshold())); | |
aacedc3e | 801 | } // end if of threshold condition |
802 | } // for c | |
c7a4dac0 | 803 | }// end do on pixels |
5c5273c2 | 804 | delete [] digits; |
805 | delete [] tracks; | |
806 | delete [] hits; | |
807 | delete [] charges; | |
21b825a4 | 808 | } |
c7a4dac0 | 809 | //______________________________________________________________________ |
810 | void AliITSsimulationSPD::SetFluctuations(AliITSpList *pList,Int_t module) { | |
811 | // Set the electronic noise and threshold non-uniformities to all the | |
812 | // pixels in a detector. | |
813 | // The parameter fSigma is the squared sum of the sigma due to noise | |
814 | // and the sigma of the threshold distribution among pixels. | |
aacedc3e | 815 | // Inputs: |
816 | // Int_t module modulel number | |
817 | // AliITSpList *pList the array of SDigits | |
818 | // Outputs: | |
819 | // AliITSpList *pList the array of SDigits | |
820 | // Return: | |
821 | // none. | |
c7a4dac0 | 822 | // |
823 | //Begin_Html | |
824 | /* | |
825 | <img src="picts/ITS/barimodel_1.gif"> | |
826 | </pre> | |
827 | <br clear=left> | |
828 | <font size=+2 color=red> | |
829 | <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>. | |
830 | </font> | |
831 | <pre> | |
832 | */ | |
833 | //End_Html | |
aacedc3e | 834 | Double_t thr=0.0,sigm=0.0; |
c7a4dac0 | 835 | Double_t signal,sigma; |
836 | Int_t iz,ix; | |
837 | ||
838 | GetThresholds(thr,sigm); | |
839 | sigma = (Double_t) sigm; | |
840 | for(iz=1;iz<=GetNPixelsZ();iz++){ | |
aacedc3e | 841 | for(ix=1;ix<=GetNPixelsX();ix++){ |
842 | signal = sigma*gRandom->Gaus(); | |
843 | fMapA2->SetHit(iz,ix,signal); | |
844 | // insert in the label-signal-hit list the pixels fired | |
845 | // only by noise | |
846 | pList->AddNoise(iz,ix,module,signal); | |
847 | } // end of loop on pixels | |
21b825a4 | 848 | } // end of loop on pixels |
c7a4dac0 | 849 | } |
8ba39da9 | 850 | |
851 | ||
852 | ||
c7a4dac0 | 853 | //______________________________________________________________________ |
8ba39da9 | 854 | void AliITSsimulationSPD::SetMask(Int_t mod) { |
c7a4dac0 | 855 | // Apply a mask to the SPD module. 1% of the pixel channels are |
856 | // masked. When the database will be ready, the masked pixels | |
857 | // should be read from it. | |
aacedc3e | 858 | // Inputs: |
859 | // none. | |
860 | // Outputs: | |
861 | // none. | |
862 | // Return: | |
863 | // none. | |
c7a4dac0 | 864 | Double_t signal; |
865 | Int_t iz,ix,im; | |
866 | Float_t totMask; | |
fcf95fc7 | 867 | Float_t perc = ((AliITSCalibrationSPD*)GetCalibrationModel(mod))->GetFractionDead(); |
c7a4dac0 | 868 | // in this way we get the same set of random numbers for all runs. |
869 | // This is a cluge for now. | |
870 | static TRandom *rnd = new TRandom(); | |
871 | ||
872 | totMask= perc*GetNPixelsZ()*GetNPixelsX(); | |
873 | for(im=1;im<totMask;im++){ | |
aacedc3e | 874 | do{ |
875 | ix=(Int_t)(rnd->Rndm()*(GetNPixelsX()-1.) + 1.); | |
876 | } while(ix<=0 || ix>GetNPixelsX()); | |
877 | do{ | |
878 | iz=(Int_t)(rnd->Rndm()*(GetNPixelsZ()-1.) + 1.); | |
879 | } while(iz<=0 || iz>GetNPixelsZ()); | |
880 | signal = -1.; | |
881 | fMapA2->SetHit(iz,ix,signal); | |
c7a4dac0 | 882 | } // end loop on masked pixels |
883 | } | |
884 | //______________________________________________________________________ | |
21b825a4 | 885 | void AliITSsimulationSPD::CreateHistograms() { |
c7a4dac0 | 886 | // Create Histograms |
aacedc3e | 887 | // Inputs: |
888 | // none. | |
889 | // Outputs: | |
890 | // none. | |
891 | // Return: | |
892 | // none. | |
c7a4dac0 | 893 | Int_t i; |
21b825a4 | 894 | |
c7a4dac0 | 895 | fHis=new TObjArray(GetNPixelsZ()); |
896 | for(i=0;i<GetNPixelsZ();i++) { | |
aacedc3e | 897 | TString spdname("spd_"); |
898 | Char_t candnum[4]; | |
899 | sprintf(candnum,"%d",i+1); | |
900 | spdname.Append(candnum); | |
901 | (*fHis)[i] = new TH1F(spdname.Data(),"SPD maps", | |
902 | GetNPixelsX(),0.,(Float_t) GetNPixelsX()); | |
c7a4dac0 | 903 | } // end for i |
b0f5e3fc | 904 | } |
c7a4dac0 | 905 | //______________________________________________________________________ |
21b825a4 | 906 | void AliITSsimulationSPD::ResetHistograms() { |
b0f5e3fc | 907 | // Reset histograms for this detector |
aacedc3e | 908 | // Inputs: |
909 | // none. | |
910 | // Outputs: | |
911 | // none. | |
912 | // Return: | |
913 | // none. | |
21b825a4 | 914 | Int_t i; |
b0f5e3fc | 915 | |
c7a4dac0 | 916 | for(i=0;i<GetNPixelsZ();i++ ) { |
aacedc3e | 917 | if ((*fHis)[i]) ((TH1F*)(*fHis)[i])->Reset(); |
c7a4dac0 | 918 | } // end for i |
919 | } | |
920 | //______________________________________________________________________ | |
921 | void AliITSsimulationSPD::WriteSDigits(AliITSpList *pList){ | |
922 | // Fills the Summable digits Tree | |
aacedc3e | 923 | // Inputs: |
924 | // AliITSpList *pList the array of SDigits | |
925 | // Outputs: | |
926 | // AliITSpList *pList the array of SDigits | |
927 | // Return: | |
928 | // none. | |
c7a4dac0 | 929 | Int_t i,ni,j,nj; |
930 | static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS"); | |
931 | ||
932 | pList->GetMaxMapIndex(ni,nj); | |
933 | for(i=0;i<ni;i++)for(j=0;j<nj;j++){ | |
aacedc3e | 934 | if(pList->GetSignalOnly(i,j)>0.0){ |
935 | aliITS->AddSumDigit(*(pList->GetpListItem(i,j))); | |
7b018162 | 936 | if(AliDebugLevel()>0){ |
aacedc3e | 937 | cout << "pListSPD: " << *(pList->GetpListItem(i,j)) << endl; |
7b018162 | 938 | AliDebug(1,Form("mod=%d r,c=%d %d sig=%f noise=%f", |
f77f13c8 | 939 | fModule,i,j,fpList->GetSignalOnly(i,j),fpList->GetNoise(i,j))) |
aacedc3e | 940 | } // end if GetDebug |
941 | } // end if | |
c7a4dac0 | 942 | } // end for i,j |
943 | return; | |
944 | } | |
945 | //______________________________________________________________________ | |
946 | void AliITSsimulationSPD::FillMapFrompList(AliITSpList *pList){ | |
947 | // Fills fMap2A from the pList of Summable digits | |
aacedc3e | 948 | // Inputs: |
949 | // AliITSpList *pList the array of SDigits | |
950 | // Outputs: | |
951 | // AliITSpList *pList the array of SDigits | |
952 | // Return: | |
953 | // none. | |
3a97c582 | 954 | Int_t ix,iz; |
c7a4dac0 | 955 | |
3a97c582 | 956 | for(iz=0;iz<GetNPixelsZ();iz++)for(ix=0;ix<GetNPixelsX();ix++) |
957 | fMapA2->AddSignal(iz,ix,pList->GetSignal(iz,ix)); | |
c7a4dac0 | 958 | return; |
b0f5e3fc | 959 | } |