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f7336fa3 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | $Log$ | |
1948ba0c | 18 | Revision 1.16 2000/12/07 12:20:46 cblume |
19 | Go back to array compression. Use sampled PRF to speed up digitization | |
20 | ||
e153aaf6 | 21 | Revision 1.15 2000/11/23 14:34:08 cblume |
22 | Fixed bug in expansion routine of arrays (initialize buffers properly) | |
23 | ||
259b9e4b | 24 | Revision 1.14 2000/11/20 08:54:44 cblume |
25 | Switch off compression as default | |
26 | ||
c1e4b257 | 27 | Revision 1.13 2000/11/10 14:57:52 cblume |
28 | Changes in the geometry constants for the DEC compiler | |
29 | ||
dd56b762 | 30 | Revision 1.12 2000/11/01 14:53:20 cblume |
31 | Merge with TRD-develop | |
32 | ||
793ff80c | 33 | Revision 1.1.4.9 2000/10/26 17:00:22 cblume |
34 | Fixed bug in CheckDetector() | |
35 | ||
36 | Revision 1.1.4.8 2000/10/23 13:41:35 cblume | |
37 | Added protection against Log(0) in the gas gain calulation | |
38 | ||
39 | Revision 1.1.4.7 2000/10/17 02:27:34 cblume | |
40 | Get rid of global constants | |
41 | ||
42 | Revision 1.1.4.6 2000/10/16 01:16:53 cblume | |
43 | Changed timebin 0 to be the one closest to the readout | |
44 | ||
45 | Revision 1.1.4.5 2000/10/15 23:34:29 cblume | |
46 | Faster version of the digitizer | |
47 | ||
48 | Revision 1.1.4.4 2000/10/06 16:49:46 cblume | |
49 | Made Getters const | |
50 | ||
51 | Revision 1.1.4.3 2000/10/04 16:34:58 cblume | |
52 | Replace include files by forward declarations | |
53 | ||
54 | Revision 1.1.4.2 2000/09/22 14:41:10 cblume | |
55 | Bug fix in PRF. Included time response. New structure | |
56 | ||
eda4336d | 57 | Revision 1.10 2000/10/05 07:27:53 cblume |
58 | Changes in the header-files by FCA | |
59 | ||
6798b56e | 60 | Revision 1.9 2000/10/02 21:28:19 fca |
61 | Removal of useless dependecies via forward declarations | |
62 | ||
94de3818 | 63 | Revision 1.8 2000/06/09 11:10:07 cblume |
64 | Compiler warnings and coding conventions, next round | |
65 | ||
dd9a6ee3 | 66 | Revision 1.7 2000/06/08 18:32:58 cblume |
67 | Make code compliant to coding conventions | |
68 | ||
8230f242 | 69 | Revision 1.6 2000/06/07 16:27:32 cblume |
70 | Try to remove compiler warnings on Sun and HP | |
71 | ||
9d0b222b | 72 | Revision 1.5 2000/05/09 16:38:57 cblume |
73 | Removed PadResponse(). Merge problem | |
74 | ||
f0a7bf65 | 75 | Revision 1.4 2000/05/08 15:53:45 cblume |
76 | Resolved merge conflict | |
77 | ||
da581aea | 78 | Revision 1.3 2000/04/28 14:49:27 cblume |
79 | Only one declaration of iDict in MakeDigits() | |
80 | ||
81 | Revision 1.1.4.1 2000/05/08 14:42:04 cblume | |
82 | Introduced AliTRDdigitsManager | |
28329a48 | 83 | |
1befd3b2 | 84 | Revision 1.1 2000/02/28 19:00:13 cblume |
85 | Add new TRD classes | |
86 | ||
f7336fa3 | 87 | */ |
88 | ||
89 | /////////////////////////////////////////////////////////////////////////////// | |
90 | // // | |
91 | // Creates and handles digits from TRD hits // | |
92 | // // | |
93 | // The following effects are included: // | |
94 | // - Diffusion // | |
95 | // - ExB effects // | |
96 | // - Gas gain including fluctuations // | |
97 | // - Pad-response (simple Gaussian approximation) // | |
98 | // - Electronics noise // | |
99 | // - Electronics gain // | |
100 | // - Digitization // | |
101 | // - ADC threshold // | |
102 | // The corresponding parameter can be adjusted via the various // | |
103 | // Set-functions. If these parameters are not explicitly set, default // | |
104 | // values are used (see Init-function). // | |
105 | // To produce digits from a root-file with TRD-hits use the // | |
106 | // slowDigitsCreate.C macro. // | |
107 | // // | |
108 | /////////////////////////////////////////////////////////////////////////////// | |
109 | ||
6798b56e | 110 | #include <stdlib.h> |
111 | ||
f7336fa3 | 112 | #include <TMath.h> |
113 | #include <TVector.h> | |
114 | #include <TRandom.h> | |
94de3818 | 115 | #include <TROOT.h> |
116 | #include <TTree.h> | |
793ff80c | 117 | #include <TFile.h> |
118 | #include <TF1.h> | |
119 | ||
120 | #include "AliRun.h" | |
f7336fa3 | 121 | |
122 | #include "AliTRD.h" | |
793ff80c | 123 | #include "AliTRDhit.h" |
f7336fa3 | 124 | #include "AliTRDdigitizer.h" |
da581aea | 125 | #include "AliTRDdataArrayI.h" |
126 | #include "AliTRDdataArrayF.h" | |
793ff80c | 127 | #include "AliTRDsegmentArray.h" |
da581aea | 128 | #include "AliTRDdigitsManager.h" |
793ff80c | 129 | #include "AliTRDgeometry.h" |
f7336fa3 | 130 | |
131 | ClassImp(AliTRDdigitizer) | |
132 | ||
133 | //_____________________________________________________________________________ | |
134 | AliTRDdigitizer::AliTRDdigitizer():TNamed() | |
135 | { | |
136 | // | |
137 | // AliTRDdigitizer default constructor | |
138 | // | |
139 | ||
da581aea | 140 | fInputFile = NULL; |
141 | fDigits = NULL; | |
142 | fTRD = NULL; | |
143 | fGeo = NULL; | |
144 | fPRF = NULL; | |
e153aaf6 | 145 | fPRFsmp = NULL; |
793ff80c | 146 | fTRF = NULL; |
147 | fTRFint = NULL; | |
da581aea | 148 | |
149 | fEvent = 0; | |
150 | fGasGain = 0.0; | |
151 | fNoise = 0.0; | |
152 | fChipGain = 0.0; | |
153 | fADCoutRange = 0.0; | |
154 | fADCinRange = 0.0; | |
155 | fADCthreshold = 0; | |
156 | fDiffusionOn = 0; | |
157 | fDiffusionT = 0.0; | |
158 | fDiffusionL = 0.0; | |
159 | fElAttachOn = 0; | |
160 | fElAttachProp = 0.0; | |
161 | fExBOn = 0; | |
793ff80c | 162 | fOmegaTau = 0.0; |
163 | fPRFOn = 0; | |
164 | fTRFOn = 0; | |
165 | fDriftVelocity = 0.0; | |
166 | ||
e153aaf6 | 167 | fPRFbin = 0; |
168 | fPRFlo = 0.0; | |
169 | fPRFhi = 0.0; | |
170 | fPRFwid = 0.0; | |
171 | fPRFpad = 0; | |
793ff80c | 172 | fTRFbin = 0; |
173 | fTRFlo = 0.0; | |
174 | fTRFhi = 0.0; | |
175 | fTRFwid = 0.0; | |
e153aaf6 | 176 | |
259b9e4b | 177 | fCompress = kTRUE; |
793ff80c | 178 | fVerbose = 1; |
f7336fa3 | 179 | |
180 | } | |
181 | ||
182 | //_____________________________________________________________________________ | |
183 | AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title) | |
184 | :TNamed(name,title) | |
185 | { | |
186 | // | |
187 | // AliTRDdigitizer default constructor | |
188 | // | |
189 | ||
da581aea | 190 | fInputFile = NULL; |
191 | fDigits = NULL; | |
192 | fTRD = NULL; | |
193 | fGeo = NULL; | |
e153aaf6 | 194 | fPRF = NULL; |
195 | fPRFsmp = NULL; | |
196 | fTRF = NULL; | |
197 | fTRFint = NULL; | |
f7336fa3 | 198 | |
da581aea | 199 | fEvent = 0; |
f7336fa3 | 200 | |
e153aaf6 | 201 | fCompress = kTRUE; |
793ff80c | 202 | fVerbose = 1; |
203 | ||
f7336fa3 | 204 | Init(); |
205 | ||
206 | } | |
207 | ||
8230f242 | 208 | //_____________________________________________________________________________ |
dd9a6ee3 | 209 | AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d) |
8230f242 | 210 | { |
211 | // | |
212 | // AliTRDdigitizer copy constructor | |
213 | // | |
214 | ||
dd9a6ee3 | 215 | ((AliTRDdigitizer &) d).Copy(*this); |
8230f242 | 216 | |
217 | } | |
218 | ||
f7336fa3 | 219 | //_____________________________________________________________________________ |
220 | AliTRDdigitizer::~AliTRDdigitizer() | |
221 | { | |
8230f242 | 222 | // |
223 | // AliTRDdigitizer destructor | |
224 | // | |
f7336fa3 | 225 | |
226 | if (fInputFile) { | |
227 | fInputFile->Close(); | |
228 | delete fInputFile; | |
229 | } | |
230 | ||
da581aea | 231 | if (fDigits) { |
232 | delete fDigits; | |
f7336fa3 | 233 | } |
234 | ||
da581aea | 235 | if (fPRF) delete fPRF; |
793ff80c | 236 | if (fTRF) delete fTRF; |
f7336fa3 | 237 | |
238 | } | |
239 | ||
8230f242 | 240 | //_____________________________________________________________________________ |
dd9a6ee3 | 241 | AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d) |
242 | { | |
243 | // | |
244 | // Assignment operator | |
245 | // | |
246 | ||
247 | if (this != &d) ((AliTRDdigitizer &) d).Copy(*this); | |
248 | return *this; | |
249 | ||
250 | } | |
251 | ||
252 | //_____________________________________________________________________________ | |
253 | void AliTRDdigitizer::Copy(TObject &d) | |
8230f242 | 254 | { |
255 | // | |
256 | // Copy function | |
257 | // | |
258 | ||
1948ba0c | 259 | Int_t iBin; |
260 | ||
dd9a6ee3 | 261 | ((AliTRDdigitizer &) d).fInputFile = NULL; |
262 | ((AliTRDdigitizer &) d).fDigits = NULL; | |
263 | ((AliTRDdigitizer &) d).fTRD = NULL; | |
264 | ((AliTRDdigitizer &) d).fGeo = NULL; | |
265 | ||
266 | ((AliTRDdigitizer &) d).fEvent = 0; | |
267 | ||
268 | ((AliTRDdigitizer &) d).fGasGain = fGasGain; | |
269 | ((AliTRDdigitizer &) d).fNoise = fNoise; | |
270 | ((AliTRDdigitizer &) d).fChipGain = fChipGain; | |
271 | ((AliTRDdigitizer &) d).fADCoutRange = fADCoutRange; | |
272 | ((AliTRDdigitizer &) d).fADCinRange = fADCinRange; | |
273 | ((AliTRDdigitizer &) d).fADCthreshold = fADCthreshold; | |
274 | ((AliTRDdigitizer &) d).fDiffusionOn = fDiffusionOn; | |
275 | ((AliTRDdigitizer &) d).fDiffusionT = fDiffusionT; | |
276 | ((AliTRDdigitizer &) d).fDiffusionL = fDiffusionL; | |
277 | ((AliTRDdigitizer &) d).fElAttachOn = fElAttachOn; | |
278 | ((AliTRDdigitizer &) d).fElAttachProp = fElAttachProp; | |
279 | ((AliTRDdigitizer &) d).fExBOn = fExBOn; | |
793ff80c | 280 | ((AliTRDdigitizer &) d).fOmegaTau = fOmegaTau; |
dd9a6ee3 | 281 | ((AliTRDdigitizer &) d).fLorentzFactor = fLorentzFactor; |
793ff80c | 282 | ((AliTRDdigitizer &) d).fPRFOn = fPRFOn; |
283 | ((AliTRDdigitizer &) d).fTRFOn = fTRFOn; | |
284 | ||
285 | ((AliTRDdigitizer &) d).fCompress = fCompress; | |
286 | ((AliTRDdigitizer &) d).fVerbose = fVerbose; | |
dd9a6ee3 | 287 | |
288 | fPRF->Copy(*((AliTRDdigitizer &) d).fPRF); | |
793ff80c | 289 | fTRF->Copy(*((AliTRDdigitizer &) d).fTRF); |
290 | ||
e153aaf6 | 291 | ((AliTRDdigitizer &) d).fPRFbin = fPRFbin; |
292 | ((AliTRDdigitizer &) d).fPRFlo = fPRFlo; | |
293 | ((AliTRDdigitizer &) d).fPRFhi = fPRFhi; | |
294 | ((AliTRDdigitizer &) d).fPRFwid = fPRFwid; | |
295 | ((AliTRDdigitizer &) d).fPRFpad = fPRFpad; | |
296 | if (((AliTRDdigitizer &) d).fPRFsmp) delete ((AliTRDdigitizer &) d).fPRFsmp; | |
297 | ((AliTRDdigitizer &) d).fPRFsmp = new Float_t[fPRFbin]; | |
1948ba0c | 298 | for (iBin = 0; iBin < fPRFbin; iBin++) { |
e153aaf6 | 299 | ((AliTRDdigitizer &) d).fPRFsmp[iBin] = fPRFsmp[iBin]; |
300 | } | |
793ff80c | 301 | ((AliTRDdigitizer &) d).fTRFbin = fTRFbin; |
302 | ((AliTRDdigitizer &) d).fTRFlo = fTRFlo; | |
303 | ((AliTRDdigitizer &) d).fTRFhi = fTRFhi; | |
304 | ((AliTRDdigitizer &) d).fTRFwid = fTRFwid; | |
305 | if (((AliTRDdigitizer &) d).fTRFint) delete ((AliTRDdigitizer &) d).fTRFint; | |
306 | ((AliTRDdigitizer &) d).fTRFint = new Float_t[fTRFbin]; | |
1948ba0c | 307 | for (iBin = 0; iBin < fTRFbin; iBin++) { |
793ff80c | 308 | ((AliTRDdigitizer &) d).fTRFint[iBin] = fTRFint[iBin]; |
309 | } | |
8230f242 | 310 | |
311 | } | |
312 | ||
f7336fa3 | 313 | //_____________________________________________________________________________ |
314 | Int_t AliTRDdigitizer::Diffusion(Float_t driftlength, Float_t *xyz) | |
315 | { | |
316 | // | |
317 | // Applies the diffusion smearing to the position of a single electron | |
318 | // | |
319 | ||
320 | Float_t driftSqrt = TMath::Sqrt(driftlength); | |
321 | Float_t sigmaT = driftSqrt * fDiffusionT; | |
322 | Float_t sigmaL = driftSqrt * fDiffusionL; | |
323 | xyz[0] = gRandom->Gaus(xyz[0], sigmaL * fLorentzFactor); | |
324 | xyz[1] = gRandom->Gaus(xyz[1], sigmaT * fLorentzFactor); | |
325 | xyz[2] = gRandom->Gaus(xyz[2], sigmaT); | |
793ff80c | 326 | |
f7336fa3 | 327 | return 1; |
328 | ||
329 | } | |
330 | ||
331 | //_____________________________________________________________________________ | |
332 | Int_t AliTRDdigitizer::ExB(Float_t driftlength, Float_t *xyz) | |
333 | { | |
334 | // | |
335 | // Applies E x B effects to the position of a single electron | |
336 | // | |
337 | ||
338 | xyz[0] = xyz[0]; | |
793ff80c | 339 | xyz[1] = xyz[1] + fOmegaTau * driftlength; |
f7336fa3 | 340 | xyz[2] = xyz[2]; |
341 | ||
342 | return 1; | |
343 | ||
344 | } | |
345 | ||
793ff80c | 346 | //_____________________________________________________________________________ |
347 | Int_t AliTRDdigitizer::PadResponse(Float_t signal, Float_t dist, Float_t *pad) | |
348 | { | |
349 | // | |
350 | // Applies the pad response | |
351 | // | |
352 | ||
e153aaf6 | 353 | Int_t iBin = ((Int_t) (( - dist - fPRFlo) / fPRFwid)); |
354 | ||
355 | Int_t iBin0 = iBin - fPRFpad; | |
356 | Int_t iBin1 = iBin; | |
357 | Int_t iBin2 = iBin + fPRFpad; | |
358 | ||
359 | if ((iBin0 >= 0) && (iBin2 < fPRFbin)) { | |
360 | ||
361 | pad[0] = signal * fPRFsmp[iBin0]; | |
362 | pad[1] = signal * fPRFsmp[iBin1]; | |
363 | pad[2] = signal * fPRFsmp[iBin2]; | |
364 | ||
793ff80c | 365 | return 1; |
e153aaf6 | 366 | |
793ff80c | 367 | } |
368 | else { | |
e153aaf6 | 369 | |
793ff80c | 370 | return 0; |
e153aaf6 | 371 | |
793ff80c | 372 | } |
373 | ||
374 | } | |
375 | ||
376 | //_____________________________________________________________________________ | |
377 | Float_t AliTRDdigitizer::TimeResponse(Float_t time) | |
378 | { | |
379 | // | |
380 | // Applies the preamp shaper time response | |
381 | // | |
382 | ||
383 | Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid)); | |
384 | if ((iBin >= 0) && (iBin < fTRFbin)) { | |
385 | return fTRFint[iBin]; | |
386 | } | |
387 | else { | |
388 | return 0.0; | |
389 | } | |
390 | ||
391 | } | |
392 | ||
f7336fa3 | 393 | //_____________________________________________________________________________ |
394 | void AliTRDdigitizer::Init() | |
395 | { | |
396 | // | |
397 | // Initializes the digitization procedure with standard values | |
398 | // | |
399 | ||
400 | // The default parameter for the digitization | |
793ff80c | 401 | fGasGain = 8.0E3; |
f7336fa3 | 402 | fNoise = 3000.; |
403 | fChipGain = 10.; | |
404 | fADCoutRange = 255.; | |
405 | fADCinRange = 2000.; | |
406 | fADCthreshold = 1; | |
407 | ||
408 | // Transverse and longitudinal diffusion coefficients (Xe/Isobutane) | |
409 | fDiffusionOn = 1; | |
410 | fDiffusionT = 0.060; | |
411 | fDiffusionL = 0.017; | |
412 | ||
413 | // Propability for electron attachment | |
414 | fElAttachOn = 0; | |
415 | fElAttachProp = 0.0; | |
416 | ||
417 | // E x B effects | |
418 | fExBOn = 0; | |
419 | // omega * tau. (tau ~ 12 * 10^-12, B = 0.2T) | |
793ff80c | 420 | fOmegaTau = 17.6 * 12.0 * 0.2 * 0.01; |
f7336fa3 | 421 | |
da581aea | 422 | // The pad response function |
e153aaf6 | 423 | fPRFOn = 1; |
424 | fPRFlo = -3.0; | |
425 | fPRFhi = 3.0; | |
426 | fPRFbin = 1200; | |
427 | fPRFwid = (fPRFhi - fPRFlo) / ((Float_t) fPRFbin); | |
428 | fPRFpad = ((Int_t) (1.0 / fPRFwid)); | |
429 | fPRF = new TF1("PRF","[0]*([1]+exp(-x*x/(2.0*[2])))",fPRFlo,fPRFhi); | |
da581aea | 430 | fPRF->SetParameter(0, 0.8872); |
431 | fPRF->SetParameter(1,-0.00573); | |
432 | fPRF->SetParameter(2, 0.454 * 0.454); | |
433 | ||
793ff80c | 434 | // The drift velocity (cm / mus) |
435 | fDriftVelocity = 1.0; | |
436 | ||
437 | // The time response function | |
438 | fTRFOn = 1; | |
439 | Float_t loTRF = -200.0; | |
440 | Float_t hiTRF = 1000.0; | |
441 | fTRF = new TF1("TRF",TRFlandau,loTRF,hiTRF,3); | |
442 | fTRF->SetParameter(0, 1.0 / 24.24249); | |
443 | fTRF->SetParameter(1, 0.0); | |
444 | fTRF->SetParameter(2, 25.0); | |
445 | fTRFbin = 1200; | |
446 | fTRFlo = loTRF * fDriftVelocity / 1000.0; | |
447 | fTRFhi = hiTRF * fDriftVelocity / 1000.0; | |
448 | fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin); | |
449 | ||
450 | } | |
451 | ||
452 | //_____________________________________________________________________________ | |
453 | void AliTRDdigitizer::IntegrateTRF() | |
454 | { | |
455 | // | |
456 | // Integrates the time response function over the time bin size | |
457 | // | |
458 | ||
459 | if (fTRFint) delete fTRFint; | |
460 | fTRFint = new Float_t[fTRFbin]; | |
461 | Float_t hiTRF = fTRFhi / fDriftVelocity * 1000.0; | |
462 | Float_t loTRF = fTRFlo / fDriftVelocity * 1000.0; | |
463 | Float_t timeBin = fGeo->GetTimeBinSize() / fDriftVelocity * 1000.0; | |
464 | Float_t binWidth = (hiTRF - loTRF) / ((Float_t) fTRFbin); | |
465 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { | |
466 | Float_t bin = iBin * binWidth + loTRF - 0.5 * timeBin; | |
467 | fTRFint[iBin] = fTRF->Integral(bin,bin + timeBin); | |
468 | } | |
469 | ||
f7336fa3 | 470 | } |
471 | ||
e153aaf6 | 472 | //_____________________________________________________________________________ |
473 | void AliTRDdigitizer::SamplePRF() | |
474 | { | |
475 | // | |
476 | // Samples the pad response function | |
477 | // | |
478 | ||
479 | if (fPRFsmp) delete fPRFsmp; | |
480 | fPRFsmp = new Float_t[fPRFbin]; | |
481 | for (Int_t iBin = 0; iBin < fPRFbin; iBin++) { | |
482 | Float_t bin = (((Float_t ) iBin) + 0.5) * fPRFwid + fPRFlo; | |
483 | fPRFsmp[iBin] = TMath::Max(fPRF->Eval(bin),0.0); | |
484 | } | |
485 | ||
486 | } | |
487 | ||
f7336fa3 | 488 | //_____________________________________________________________________________ |
489 | Bool_t AliTRDdigitizer::Open(const Char_t *name, Int_t nEvent) | |
490 | { | |
491 | // | |
492 | // Opens a ROOT-file with TRD-hits and reads in the hit-tree | |
493 | // | |
494 | ||
495 | // Connect the AliRoot file containing Geometry, Kine, and Hits | |
496 | fInputFile = (TFile*) gROOT->GetListOfFiles()->FindObject(name); | |
497 | if (!fInputFile) { | |
498 | printf("AliTRDdigitizer::Open -- "); | |
499 | printf("Open the ALIROOT-file %s.\n",name); | |
500 | fInputFile = new TFile(name,"UPDATE"); | |
501 | } | |
502 | else { | |
503 | printf("AliTRDdigitizer::Open -- "); | |
504 | printf("%s is already open.\n",name); | |
505 | } | |
506 | ||
da581aea | 507 | gAlice = (AliRun*) fInputFile->Get("gAlice"); |
508 | if (gAlice) { | |
509 | printf("AliTRDdigitizer::Open -- "); | |
510 | printf("AliRun object found on file.\n"); | |
511 | } | |
512 | else { | |
513 | printf("AliTRDdigitizer::Open -- "); | |
514 | printf("Could not find AliRun object.\n"); | |
515 | return kFALSE; | |
516 | } | |
f7336fa3 | 517 | |
518 | fEvent = nEvent; | |
519 | ||
520 | // Import the Trees for the event nEvent in the file | |
521 | Int_t nparticles = gAlice->GetEvent(fEvent); | |
522 | if (nparticles <= 0) { | |
523 | printf("AliTRDdigitizer::Open -- "); | |
524 | printf("No entries in the trees for event %d.\n",fEvent); | |
525 | return kFALSE; | |
526 | } | |
527 | ||
793ff80c | 528 | return InitDetector(); |
529 | ||
530 | } | |
531 | ||
532 | //_____________________________________________________________________________ | |
533 | Bool_t AliTRDdigitizer::InitDetector() | |
534 | { | |
535 | // | |
536 | // Sets the pointer to the TRD detector and the geometry | |
537 | // | |
538 | ||
dd9a6ee3 | 539 | // Get the pointer to the detector class and check for version 1 |
540 | fTRD = (AliTRD*) gAlice->GetDetector("TRD"); | |
541 | if (fTRD->IsVersion() != 1) { | |
542 | printf("AliTRDdigitizer::Open -- "); | |
543 | printf("TRD must be version 1 (slow simulator).\n"); | |
544 | exit(1); | |
545 | } | |
546 | ||
547 | // Get the geometry | |
548 | fGeo = fTRD->GetGeometry(); | |
549 | printf("AliTRDdigitizer::Open -- "); | |
550 | printf("Geometry version %d\n",fGeo->IsVersion()); | |
551 | ||
f7336fa3 | 552 | return kTRUE; |
553 | ||
554 | } | |
555 | ||
f7336fa3 | 556 | //_____________________________________________________________________________ |
557 | Bool_t AliTRDdigitizer::MakeDigits() | |
558 | { | |
559 | // | |
560 | // Loops through the TRD-hits and creates the digits. | |
561 | // | |
562 | ||
f7336fa3 | 563 | /////////////////////////////////////////////////////////////// |
564 | // Parameter | |
565 | /////////////////////////////////////////////////////////////// | |
566 | ||
567 | // Converts number of electrons to fC | |
8230f242 | 568 | const Float_t kEl2fC = 1.602E-19 * 1.0E15; |
f7336fa3 | 569 | |
570 | /////////////////////////////////////////////////////////////// | |
571 | ||
793ff80c | 572 | // Number of pads included in the pad response |
573 | const Int_t kNpad = 3; | |
574 | ||
575 | // Number of track dictionary arrays | |
dd56b762 | 576 | const Int_t kNDict = AliTRDdigitsManager::kNDict; |
793ff80c | 577 | |
f7336fa3 | 578 | Int_t iRow, iCol, iTime; |
28329a48 | 579 | Int_t iDict; |
793ff80c | 580 | Int_t nBytes = 0; |
f7336fa3 | 581 | |
582 | Int_t totalSizeDigits = 0; | |
583 | Int_t totalSizeDict0 = 0; | |
584 | Int_t totalSizeDict1 = 0; | |
585 | Int_t totalSizeDict2 = 0; | |
586 | ||
793ff80c | 587 | AliTRDdataArrayF *signals = 0; |
588 | AliTRDdataArrayI *digits = 0; | |
8230f242 | 589 | AliTRDdataArrayI *dictionary[kNDict]; |
da581aea | 590 | |
793ff80c | 591 | // Create a digits manager |
592 | fDigits = new AliTRDdigitsManager(); | |
593 | ||
594 | // Create a container for the amplitudes | |
595 | AliTRDsegmentArray *signalsArray | |
596 | = new AliTRDsegmentArray("AliTRDdataArrayF",AliTRDgeometry::Ndet()); | |
597 | ||
da581aea | 598 | if (!fGeo) { |
599 | printf("AliTRDdigitizer::MakeDigits -- "); | |
600 | printf("No geometry defined\n"); | |
601 | return kFALSE; | |
602 | } | |
603 | ||
da581aea | 604 | printf("AliTRDdigitizer::MakeDigits -- "); |
605 | printf("Start creating digits.\n"); | |
793ff80c | 606 | if (fVerbose > 0) this->Dump(); |
f7336fa3 | 607 | |
608 | // The Lorentz factor | |
609 | if (fExBOn) { | |
793ff80c | 610 | fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau); |
f7336fa3 | 611 | } |
612 | else { | |
613 | fLorentzFactor = 1.0; | |
614 | } | |
615 | ||
e153aaf6 | 616 | // Create the sampled PRF |
617 | SamplePRF(); | |
618 | ||
793ff80c | 619 | // Create the integrated TRF |
620 | IntegrateTRF(); | |
621 | ||
622 | // Get the pointer to the hit tree | |
623 | TTree *HitTree = gAlice->TreeH(); | |
624 | ||
625 | // Get the number of entries in the hit tree | |
626 | // (Number of primary particles creating a hit somewhere) | |
627 | Int_t nTrack = (Int_t) HitTree->GetEntries(); | |
628 | if (fVerbose > 0) { | |
629 | printf("AliTRDdigitizer::MakeDigits -- "); | |
630 | printf("Found %d primary particles\n",nTrack); | |
631 | } | |
632 | ||
633 | Int_t detectorOld = -1; | |
634 | Int_t countHits = 0; | |
635 | ||
636 | // Loop through all entries in the tree | |
637 | for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) { | |
638 | ||
639 | gAlice->ResetHits(); | |
640 | nBytes += HitTree->GetEvent(iTrack); | |
641 | ||
642 | // Get the number of hits in the TRD created by this particle | |
643 | Int_t nHit = fTRD->Hits()->GetEntriesFast(); | |
644 | if (fVerbose > 0) { | |
645 | printf("AliTRDdigitizer::MakeDigits -- "); | |
646 | printf("Found %d hits for primary particle %d\n",nHit,iTrack); | |
647 | } | |
648 | ||
649 | // Loop through the TRD hits | |
650 | for (Int_t iHit = 0; iHit < nHit; iHit++) { | |
651 | ||
652 | countHits++; | |
653 | ||
654 | AliTRDhit *hit = (AliTRDhit *) fTRD->Hits()->UncheckedAt(iHit); | |
655 | Float_t pos[3]; | |
656 | pos[0] = hit->X(); | |
657 | pos[1] = hit->Y(); | |
658 | pos[2] = hit->Z(); | |
659 | Float_t q = hit->GetCharge(); | |
660 | Int_t track = hit->Track(); | |
661 | Int_t detector = hit->GetDetector(); | |
662 | Int_t plane = fGeo->GetPlane(detector); | |
663 | Int_t sector = fGeo->GetSector(detector); | |
664 | Int_t chamber = fGeo->GetChamber(detector); | |
665 | ||
666 | if (!(CheckDetector(plane,chamber,sector))) continue; | |
667 | ||
668 | Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector); | |
669 | Int_t nColMax = fGeo->GetColMax(plane); | |
670 | Int_t nTimeMax = fGeo->GetTimeMax(); | |
671 | Float_t row0 = fGeo->GetRow0(plane,chamber,sector); | |
672 | Float_t col0 = fGeo->GetCol0(plane); | |
673 | Float_t time0 = fGeo->GetTime0(plane); | |
674 | Float_t rowPadSize = fGeo->GetRowPadSize(); | |
675 | Float_t colPadSize = fGeo->GetColPadSize(); | |
676 | Float_t timeBinSize = fGeo->GetTimeBinSize(); | |
677 | ||
678 | if (fVerbose > 1) { | |
679 | printf("Analyze hit no. %d ",iHit); | |
680 | printf("-----------------------------------------------------------\n"); | |
681 | hit->Dump(); | |
682 | printf("plane = %d, sector = %d, chamber = %d\n" | |
683 | ,plane,sector,chamber); | |
684 | printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n" | |
685 | ,nRowMax,nColMax,nTimeMax); | |
686 | printf("row0 = %f, col0 = %f, time0 = %f\n" | |
687 | ,row0,col0,time0); | |
c1e4b257 | 688 | printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n" |
689 | ,rowPadSize,colPadSize,timeBinSize); | |
793ff80c | 690 | } |
691 | ||
dd56b762 | 692 | // Don't analyze test hits with amplitude 0. |
693 | if (((Int_t) q) == 0) continue; | |
694 | ||
793ff80c | 695 | if (detector != detectorOld) { |
e153aaf6 | 696 | |
793ff80c | 697 | if (fVerbose > 1) { |
698 | printf("AliTRDdigitizer::MakeDigits -- "); | |
699 | printf("Get new container. New det = %d, Old det = %d\n" | |
700 | ,detector,detectorOld); | |
701 | } | |
702 | // Compress the old one if enabled | |
703 | if ((fCompress) && (detectorOld > -1)) { | |
704 | if (fVerbose > 1) { | |
705 | printf("AliTRDdigitizer::MakeDigits -- "); | |
e153aaf6 | 706 | printf("Compress the old container ..."); |
dd9a6ee3 | 707 | } |
793ff80c | 708 | signals->Compress(1,0); |
709 | for (iDict = 0; iDict < kNDict; iDict++) { | |
710 | dictionary[iDict]->Compress(1,0); | |
dd9a6ee3 | 711 | } |
793ff80c | 712 | if (fVerbose > 1) printf("done\n"); |
9d0b222b | 713 | } |
793ff80c | 714 | // Get the new container |
715 | signals = (AliTRDdataArrayF *) signalsArray->At(detector); | |
716 | if (signals->GetNtime() == 0) { | |
717 | // Allocate a new one if not yet existing | |
718 | if (fVerbose > 1) { | |
719 | printf("AliTRDdigitizer::MakeDigits -- "); | |
720 | printf("Allocate a new container ... "); | |
721 | } | |
722 | signals->Allocate(nRowMax,nColMax,nTimeMax); | |
723 | } | |
724 | else { | |
725 | // Expand an existing one | |
c1e4b257 | 726 | if (fCompress) { |
727 | if (fVerbose > 1) { | |
728 | printf("AliTRDdigitizer::MakeDigits -- "); | |
729 | printf("Expand an existing container ... "); | |
730 | } | |
731 | signals->Expand(); | |
793ff80c | 732 | } |
793ff80c | 733 | } |
734 | // The same for the dictionary | |
735 | for (iDict = 0; iDict < kNDict; iDict++) { | |
736 | dictionary[iDict] = fDigits->GetDictionary(detector,iDict); | |
737 | if (dictionary[iDict]->GetNtime() == 0) { | |
738 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeMax); | |
739 | } | |
740 | else { | |
741 | if (fCompress) dictionary[iDict]->Expand(); | |
742 | } | |
743 | } | |
744 | if (fVerbose > 1) printf("done\n"); | |
745 | detectorOld = detector; | |
746 | } | |
9d0b222b | 747 | |
793ff80c | 748 | // Rotate the sectors on top of each other |
749 | Float_t rot[3]; | |
750 | fGeo->Rotate(detector,pos,rot); | |
751 | ||
752 | // The driftlength | |
753 | Float_t driftlength = time0 - rot[0]; | |
754 | if ((driftlength < 0) || | |
dd56b762 | 755 | (driftlength > AliTRDgeometry::DrThick())) continue; |
793ff80c | 756 | Float_t driftlengthL = driftlength; |
757 | if (fExBOn) driftlengthL /= TMath::Sqrt(fLorentzFactor); | |
758 | ||
759 | // The hit position in pad coordinates (center pad) | |
760 | // The pad row (z-direction) | |
761 | Int_t rowH = (Int_t) ((rot[2] - row0) / rowPadSize); | |
762 | // The pad column (rphi-direction) | |
763 | Int_t colH = (Int_t) ((rot[1] - col0) / colPadSize); | |
764 | // The time bucket | |
765 | Int_t timeH = (Int_t) (driftlength / timeBinSize); | |
766 | if (fVerbose > 1) { | |
767 | printf("rowH = %d, colH = %d, timeH = %d\n" | |
768 | ,rowH,colH,timeH); | |
769 | } | |
770 | ||
771 | // Loop over all electrons of this hit | |
772 | // TR photons produce hits with negative charge | |
773 | Int_t nEl = ((Int_t) TMath::Abs(q)); | |
774 | for (Int_t iEl = 0; iEl < nEl; iEl++) { | |
775 | ||
776 | Float_t xyz[3]; | |
777 | xyz[0] = rot[0]; | |
778 | xyz[1] = rot[1]; | |
779 | xyz[2] = rot[2]; | |
780 | ||
781 | // Electron attachment | |
782 | if (fElAttachOn) { | |
783 | if (gRandom->Rndm() < (driftlengthL * fElAttachProp / 100.)) | |
784 | continue; | |
785 | } | |
786 | ||
787 | // Apply the diffusion smearing | |
788 | if (fDiffusionOn) { | |
789 | if (!(Diffusion(driftlengthL,xyz))) continue; | |
da581aea | 790 | } |
f7336fa3 | 791 | |
793ff80c | 792 | // Apply E x B effects |
793 | if (fExBOn) { | |
794 | if (!(ExB(driftlength,xyz))) continue; | |
795 | } | |
f7336fa3 | 796 | |
793ff80c | 797 | // The electron position |
798 | // The pad row (z-direction) | |
799 | Int_t rowE = (Int_t) ((xyz[2] - row0) / rowPadSize); | |
800 | // The pad column (rphi-direction) | |
801 | Int_t colE = (Int_t) ((xyz[1] - col0) / colPadSize); | |
802 | // The time bucket | |
803 | Int_t timeE = (Int_t) ((time0 - xyz[0]) / timeBinSize); | |
804 | ||
805 | if (( rowE < 0) || ( rowE >= nRowMax)) continue; | |
806 | if (( colE < 0) || ( colE >= nColMax)) continue; | |
807 | if ((timeE < 0) || (timeE >= nTimeMax)) continue; | |
808 | ||
809 | // Apply the gas gain including fluctuations | |
810 | Float_t ggRndm = 0.0; | |
811 | do { | |
812 | ggRndm = gRandom->Rndm(); | |
813 | } while (ggRndm <= 0); | |
814 | Int_t signal = (Int_t) (-fGasGain * TMath::Log(ggRndm)); | |
815 | ||
816 | if (fVerbose > 2) { | |
817 | printf(" electron no. %d, signal = %d\n",iEl,signal); | |
818 | printf(" rowE = %d, colE = %d, timeE = %d\n" | |
c1e4b257 | 819 | ,rowE,colE,timeE); |
793ff80c | 820 | } |
f7336fa3 | 821 | |
793ff80c | 822 | // Apply the pad response |
823 | Float_t padSignal[kNpad]; | |
824 | if (fPRFOn) { | |
825 | // The distance of the electron to the center of the pad | |
826 | // in units of pad width | |
827 | Float_t dist = (xyz[1] - col0 - (colE + 0.5) * colPadSize) | |
828 | / colPadSize; | |
829 | if (!(PadResponse(signal,dist,padSignal))) continue; | |
830 | } | |
831 | else { | |
832 | padSignal[0] = 0.0; | |
833 | padSignal[1] = signal; | |
834 | padSignal[2] = 0.0; | |
835 | } | |
f7336fa3 | 836 | |
793ff80c | 837 | // The distance of the position to the beginning of the timebin |
838 | Float_t timeOffset = (time0 - timeE * timeBinSize) - xyz[0]; | |
839 | Int_t timeTRDbeg = 0; | |
840 | Int_t timeTRDend = 1; | |
841 | if (fTRFOn) { | |
842 | timeTRDbeg = 2; | |
843 | timeTRDend = 11; | |
844 | } | |
845 | for (Int_t iTimeBin = TMath::Max(timeE - timeTRDbeg, 0) | |
846 | ; iTimeBin < TMath::Min(timeE + timeTRDend,nTimeMax) | |
847 | ; iTimeBin++) { | |
848 | ||
849 | // Apply the time response | |
850 | Float_t timeResponse = 1.0; | |
851 | if (fTRFOn) { | |
852 | Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset; | |
853 | timeResponse = TimeResponse(time); | |
854 | } | |
f7336fa3 | 855 | |
793ff80c | 856 | // Add the signals |
857 | Float_t signalOld[kNpad] = { 0.0, 0.0, 0.0 }; | |
858 | for (Int_t iPad = 0; iPad < kNpad; iPad++) { | |
859 | Int_t colPos = colE + iPad - 1; | |
860 | if (colPos < 0) continue; | |
861 | if (colPos >= nColMax) break; | |
862 | signalOld[iPad] = signals->GetData(rowE,colPos,iTimeBin); | |
863 | signalOld[iPad] += padSignal[iPad] * timeResponse; | |
864 | signals->SetData(rowE,colPos,iTimeBin,signalOld[iPad]); | |
865 | } | |
866 | if (fVerbose > 3) { | |
867 | printf(" iTimeBin = %d, timeResponse = %f\n" | |
868 | ,iTimeBin,timeResponse); | |
869 | printf(" pad-signal = %f, %f, %f\n" | |
870 | ,signalOld[0],signalOld[1],signalOld[2]); | |
871 | } | |
f7336fa3 | 872 | |
793ff80c | 873 | // Store the track index in the dictionary |
874 | // Note: We store index+1 in order to allow the array to be compressed | |
875 | for (iDict = 0; iDict < kNDict; iDict++) { | |
876 | Int_t oldTrack = dictionary[iDict]->GetData(rowE,colE,timeE); | |
877 | if (oldTrack == track+1) break; | |
878 | //if (oldTrack == -1) break; | |
879 | if (oldTrack == 0) { | |
880 | dictionary[iDict]->SetData(rowE,colE,timeE,track+1); | |
881 | if (fVerbose > 3) { | |
882 | printf(" track index = %d\n",track); | |
f7336fa3 | 883 | } |
793ff80c | 884 | break; |
885 | } | |
886 | } | |
887 | if ((fVerbose > 1) && (iDict == kNDict)) { | |
888 | printf("AliTRDdigitizer::MakeDigits -- "); | |
889 | printf("More than three tracks for one digit!\n"); | |
f7336fa3 | 890 | } |
891 | ||
f7336fa3 | 892 | } |
893 | ||
793ff80c | 894 | } |
f7336fa3 | 895 | |
793ff80c | 896 | } |
f7336fa3 | 897 | |
793ff80c | 898 | } // All hits finished |
f7336fa3 | 899 | |
793ff80c | 900 | printf("AliTRDdigitizer::MakeDigits -- "); |
901 | printf("Finished analyzing %d hits\n",countHits); | |
902 | ||
903 | // Loop through all chambers to finalize the digits | |
904 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
905 | ||
906 | Int_t plane = fGeo->GetPlane(iDet); | |
907 | Int_t sector = fGeo->GetSector(iDet); | |
908 | Int_t chamber = fGeo->GetChamber(iDet); | |
909 | Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector); | |
910 | Int_t nColMax = fGeo->GetColMax(plane); | |
911 | Int_t nTimeMax = fGeo->GetTimeMax(); | |
912 | ||
c1e4b257 | 913 | //if (!(CheckDetector(plane,chamber,sector))) continue; |
793ff80c | 914 | if (fVerbose > 0) { |
915 | printf("AliTRDdigitizer::MakeDigits -- "); | |
916 | printf("Digitization for chamber %d\n",iDet); | |
917 | } | |
da581aea | 918 | |
793ff80c | 919 | // Add a container for the digits of this detector |
920 | digits = fDigits->GetDigits(iDet); | |
921 | // Allocate memory space for the digits buffer | |
922 | digits->Allocate(nRowMax,nColMax,nTimeMax); | |
da581aea | 923 | |
793ff80c | 924 | // Get the signal container |
925 | signals = (AliTRDdataArrayF *) signalsArray->At(iDet); | |
926 | if (signals->GetNtime() == 0) { | |
927 | // Create missing containers | |
928 | signals->Allocate(nRowMax,nColMax,nTimeMax); | |
929 | } | |
930 | else { | |
931 | // Expand the container if neccessary | |
932 | if (fCompress) signals->Expand(); | |
933 | } | |
934 | // Create the missing dictionary containers | |
935 | for (iDict = 0; iDict < kNDict; iDict++) { | |
936 | dictionary[iDict] = fDigits->GetDictionary(iDet,iDict); | |
937 | if (dictionary[iDict]->GetNtime() == 0) { | |
938 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeMax); | |
939 | } | |
940 | } | |
f7336fa3 | 941 | |
793ff80c | 942 | Int_t nDigits = 0; |
943 | ||
944 | // Create the digits for this chamber | |
945 | for (iRow = 0; iRow < nRowMax; iRow++ ) { | |
946 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
947 | for (iTime = 0; iTime < nTimeMax; iTime++) { | |
948 | ||
949 | Float_t signalAmp = signals->GetData(iRow,iCol,iTime); | |
950 | ||
951 | // Add the noise | |
dd56b762 | 952 | signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fNoise),0.0); |
793ff80c | 953 | // Convert to fC |
954 | signalAmp *= kEl2fC; | |
955 | // Convert to mV | |
956 | signalAmp *= fChipGain; | |
957 | // Convert to ADC counts. Set the overflow-bit fADCoutRange if the | |
958 | // signal is larger than fADCinRange | |
959 | Int_t adc = 0; | |
960 | if (signalAmp >= fADCinRange) { | |
961 | adc = ((Int_t) fADCoutRange); | |
962 | } | |
963 | else { | |
964 | adc = ((Int_t) (signalAmp * (fADCoutRange / fADCinRange))); | |
965 | } | |
f7336fa3 | 966 | |
793ff80c | 967 | // Store the amplitude of the digit if above threshold |
968 | if (adc > fADCthreshold) { | |
c1e4b257 | 969 | if (fVerbose > 2) { |
970 | printf(" iRow = %d, iCol = %d, iTime = %d\n" | |
971 | ,iRow,iCol,iTime); | |
972 | printf(" signal = %f, adc = %d\n",signalAmp,adc); | |
973 | } | |
793ff80c | 974 | nDigits++; |
975 | digits->SetData(iRow,iCol,iTime,adc); | |
f7336fa3 | 976 | } |
f7336fa3 | 977 | |
f7336fa3 | 978 | } |
793ff80c | 979 | } |
980 | } | |
981 | ||
982 | // Compress the arrays | |
983 | digits->Compress(1,0); | |
984 | for (iDict = 0; iDict < kNDict; iDict++) { | |
985 | dictionary[iDict]->Compress(1,0); | |
986 | } | |
f7336fa3 | 987 | |
793ff80c | 988 | totalSizeDigits += digits->GetSize(); |
989 | totalSizeDict0 += dictionary[0]->GetSize(); | |
990 | totalSizeDict1 += dictionary[1]->GetSize(); | |
991 | totalSizeDict2 += dictionary[2]->GetSize(); | |
f7336fa3 | 992 | |
c1e4b257 | 993 | Float_t nPixel = nRowMax * nColMax * nTimeMax; |
793ff80c | 994 | printf("AliTRDdigitizer::MakeDigits -- "); |
c1e4b257 | 995 | printf("Found %d digits in detector %d (%3.0f).\n" |
996 | ,nDigits,iDet | |
997 | ,100.0 * ((Float_t) nDigits) / nPixel); | |
da581aea | 998 | |
793ff80c | 999 | if (fCompress) signals->Compress(1,0); |
f7336fa3 | 1000 | |
f7336fa3 | 1001 | } |
1002 | ||
da581aea | 1003 | printf("AliTRDdigitizer::MakeDigits -- "); |
8230f242 | 1004 | printf("Total number of analyzed hits = %d\n",countHits); |
da581aea | 1005 | |
f7336fa3 | 1006 | printf("AliTRDdigitizer::MakeDigits -- "); |
1007 | printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits | |
1008 | ,totalSizeDict0 | |
1009 | ,totalSizeDict1 | |
1010 | ,totalSizeDict2); | |
1011 | ||
1012 | return kTRUE; | |
1013 | ||
1014 | } | |
1015 | ||
793ff80c | 1016 | //_____________________________________________________________________________ |
1017 | Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector) | |
1018 | { | |
1019 | // | |
1020 | // Checks whether a detector is enabled | |
1021 | // | |
1022 | ||
1023 | if ((fTRD->GetSensChamber() >= 0) && | |
1024 | (fTRD->GetSensChamber() != chamber)) return kFALSE; | |
1025 | if ((fTRD->GetSensPlane() >= 0) && | |
c1e4b257 | 1026 | (fTRD->GetSensPlane() != plane)) return kFALSE; |
793ff80c | 1027 | if ( fTRD->GetSensSector() >= 0) { |
1028 | Int_t sens1 = fTRD->GetSensSector(); | |
1029 | Int_t sens2 = sens1 + fTRD->GetSensSectorRange(); | |
1030 | sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect())) | |
1031 | * AliTRDgeometry::Nsect(); | |
1032 | if (sens1 < sens2) { | |
1033 | if ((sector < sens1) || (sector >= sens2)) return kFALSE; | |
1034 | } | |
1035 | else { | |
1036 | if ((sector < sens1) && (sector >= sens2)) return kFALSE; | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | return kTRUE; | |
1041 | ||
1042 | } | |
1043 | ||
f7336fa3 | 1044 | //_____________________________________________________________________________ |
1045 | Bool_t AliTRDdigitizer::WriteDigits() | |
1046 | { | |
1047 | // | |
1048 | // Writes out the TRD-digits and the dictionaries | |
1049 | // | |
1050 | ||
1051 | // Create the branches | |
1052 | if (!(gAlice->TreeD()->GetBranch("TRDdigits"))) { | |
da581aea | 1053 | if (!fDigits->MakeBranch()) return kFALSE; |
f7336fa3 | 1054 | } |
1055 | ||
da581aea | 1056 | // Store the digits and the dictionary in the tree |
1057 | fDigits->WriteDigits(); | |
f7336fa3 | 1058 | |
1059 | // Write the new tree into the input file (use overwrite option) | |
1060 | Char_t treeName[7]; | |
1061 | sprintf(treeName,"TreeD%d",fEvent); | |
1062 | printf("AliTRDdigitizer::WriteDigits -- "); | |
1063 | printf("Write the digits tree %s for event %d.\n" | |
1064 | ,treeName,fEvent); | |
1065 | gAlice->TreeD()->Write(treeName,2); | |
1066 | ||
1067 | return kTRUE; | |
1068 | ||
1069 | } | |
793ff80c | 1070 | |
1071 | //_____________________________________________________________________________ | |
1072 | void AliTRDdigitizer::SetPRF(TF1 *prf) | |
1073 | { | |
1074 | // | |
1075 | // Defines a new pad response function | |
1076 | // | |
1077 | ||
1078 | if (fPRF) delete fPRF; | |
1079 | fPRF = prf; | |
1080 | ||
1081 | } | |
1082 | ||
1083 | //_____________________________________________________________________________ | |
1084 | void AliTRDdigitizer::SetTRF(TF1 *trf) | |
1085 | { | |
1086 | // | |
1087 | // Defines a new time response function | |
1088 | // | |
1089 | ||
1090 | if (fTRF) delete fTRF; | |
1091 | fTRF = trf; | |
1092 | ||
1093 | } | |
1094 | ||
1095 | //_____________________________________________________________________________ | |
1096 | Double_t TRFlandau(Double_t *x, Double_t *par) | |
1097 | { | |
1098 | ||
1099 | Double_t xx = x[0]; | |
1100 | Double_t landau = par[0] * TMath::Landau(xx,par[1],par[2]); | |
1101 | ||
1102 | return landau; | |
1103 | ||
1104 | } |