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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 | $Log$ | |
8e64dd77 | 18 | Revision 1.35 2002/03/28 14:59:07 cblume |
19 | Coding conventions | |
20 | ||
0a29d0f1 | 21 | Revision 1.34 2002/03/25 20:00:44 cblume |
22 | Introduce parameter class and regions of interest for merging | |
23 | ||
4487dad0 | 24 | Revision 1.33 2002/02/12 17:32:03 cblume |
25 | Rearrange the deleting of the list of sdigitsmanager | |
26 | ||
b1113c6b | 27 | Revision 1.32 2002/02/12 16:07:21 cblume |
28 | Add new constructor | |
29 | ||
bfc40adc | 30 | Revision 1.31 2002/02/11 14:27:11 cblume |
31 | New pad plane design, new TRF+PRF, tail cancelation, cross talk | |
32 | ||
e23fbb27 | 33 | Revision 1.30 2001/11/19 08:44:08 cblume |
34 | Fix bugs reported by Rene | |
35 | ||
a1c3aded | 36 | Revision 1.29 2001/11/14 19:44:25 hristov |
37 | Numeric const casted (Alpha) | |
38 | ||
20c69486 | 39 | Revision 1.28 2001/11/14 16:35:58 cblume |
40 | Inherits now from AliDetector | |
41 | ||
85cbec76 | 42 | Revision 1.27 2001/11/14 10:50:45 cblume |
43 | Changes in digits IO. Add merging of summable digits | |
44 | ||
abaf1f1d | 45 | Revision 1.26 2001/11/06 17:19:41 cblume |
46 | Add detailed geometry and simple simulator | |
47 | ||
16bf9884 | 48 | Revision 1.25 2001/06/27 09:54:44 cblume |
49 | Moved fField initialization to InitDetector() | |
50 | ||
88fd7ccb | 51 | Revision 1.24 2001/05/21 16:45:47 hristov |
52 | Last minute changes (C.Blume) | |
53 | ||
db30bf0f | 54 | Revision 1.23 2001/05/07 08:04:48 cblume |
55 | New TRF and PRF. Speedup of the code. Digits from amplification region included | |
56 | ||
872a7aba | 57 | Revision 1.22 2001/03/30 14:40:14 cblume |
58 | Update of the digitization parameter | |
59 | ||
a3c76cdc | 60 | Revision 1.21 2001/03/13 09:30:35 cblume |
61 | Update of digitization. Moved digit branch definition to AliTRD | |
62 | ||
6244debe | 63 | Revision 1.20 2001/02/25 20:19:00 hristov |
64 | Minor correction: loop variable declared only once for HP, Sun | |
65 | ||
c3a4830f | 66 | Revision 1.19 2001/02/14 18:22:26 cblume |
67 | Change in the geometry of the padplane | |
68 | ||
71d9fa7b | 69 | Revision 1.18 2001/01/26 19:56:57 hristov |
70 | Major upgrade of AliRoot code | |
71 | ||
2ab0c725 | 72 | Revision 1.17 2000/12/08 12:53:27 cblume |
73 | Change in Copy() function for HP-compiler | |
74 | ||
1948ba0c | 75 | Revision 1.16 2000/12/07 12:20:46 cblume |
76 | Go back to array compression. Use sampled PRF to speed up digitization | |
77 | ||
e153aaf6 | 78 | Revision 1.15 2000/11/23 14:34:08 cblume |
79 | Fixed bug in expansion routine of arrays (initialize buffers properly) | |
80 | ||
259b9e4b | 81 | Revision 1.14 2000/11/20 08:54:44 cblume |
82 | Switch off compression as default | |
83 | ||
c1e4b257 | 84 | Revision 1.13 2000/11/10 14:57:52 cblume |
85 | Changes in the geometry constants for the DEC compiler | |
86 | ||
dd56b762 | 87 | Revision 1.12 2000/11/01 14:53:20 cblume |
88 | Merge with TRD-develop | |
89 | ||
793ff80c | 90 | Revision 1.1.4.9 2000/10/26 17:00:22 cblume |
91 | Fixed bug in CheckDetector() | |
92 | ||
93 | Revision 1.1.4.8 2000/10/23 13:41:35 cblume | |
94 | Added protection against Log(0) in the gas gain calulation | |
95 | ||
96 | Revision 1.1.4.7 2000/10/17 02:27:34 cblume | |
97 | Get rid of global constants | |
98 | ||
99 | Revision 1.1.4.6 2000/10/16 01:16:53 cblume | |
100 | Changed timebin 0 to be the one closest to the readout | |
101 | ||
102 | Revision 1.1.4.5 2000/10/15 23:34:29 cblume | |
103 | Faster version of the digitizer | |
104 | ||
105 | Revision 1.1.4.4 2000/10/06 16:49:46 cblume | |
106 | Made Getters const | |
107 | ||
108 | Revision 1.1.4.3 2000/10/04 16:34:58 cblume | |
109 | Replace include files by forward declarations | |
110 | ||
111 | Revision 1.1.4.2 2000/09/22 14:41:10 cblume | |
112 | Bug fix in PRF. Included time response. New structure | |
113 | ||
eda4336d | 114 | Revision 1.10 2000/10/05 07:27:53 cblume |
115 | Changes in the header-files by FCA | |
116 | ||
6798b56e | 117 | Revision 1.9 2000/10/02 21:28:19 fca |
118 | Removal of useless dependecies via forward declarations | |
119 | ||
94de3818 | 120 | Revision 1.8 2000/06/09 11:10:07 cblume |
121 | Compiler warnings and coding conventions, next round | |
122 | ||
dd9a6ee3 | 123 | Revision 1.7 2000/06/08 18:32:58 cblume |
124 | Make code compliant to coding conventions | |
125 | ||
8230f242 | 126 | Revision 1.6 2000/06/07 16:27:32 cblume |
127 | Try to remove compiler warnings on Sun and HP | |
128 | ||
9d0b222b | 129 | Revision 1.5 2000/05/09 16:38:57 cblume |
130 | Removed PadResponse(). Merge problem | |
131 | ||
f0a7bf65 | 132 | Revision 1.4 2000/05/08 15:53:45 cblume |
133 | Resolved merge conflict | |
134 | ||
da581aea | 135 | Revision 1.3 2000/04/28 14:49:27 cblume |
136 | Only one declaration of iDict in MakeDigits() | |
137 | ||
138 | Revision 1.1.4.1 2000/05/08 14:42:04 cblume | |
139 | Introduced AliTRDdigitsManager | |
28329a48 | 140 | |
1befd3b2 | 141 | Revision 1.1 2000/02/28 19:00:13 cblume |
142 | Add new TRD classes | |
143 | ||
f7336fa3 | 144 | */ |
145 | ||
146 | /////////////////////////////////////////////////////////////////////////////// | |
147 | // // | |
148 | // Creates and handles digits from TRD hits // | |
abaf1f1d | 149 | // Author: C. Blume (C.Blume@gsi.de) // |
f7336fa3 | 150 | // // |
151 | // The following effects are included: // | |
152 | // - Diffusion // | |
153 | // - ExB effects // | |
154 | // - Gas gain including fluctuations // | |
155 | // - Pad-response (simple Gaussian approximation) // | |
abaf1f1d | 156 | // - Time-response // |
f7336fa3 | 157 | // - Electronics noise // |
158 | // - Electronics gain // | |
159 | // - Digitization // | |
160 | // - ADC threshold // | |
161 | // The corresponding parameter can be adjusted via the various // | |
162 | // Set-functions. If these parameters are not explicitly set, default // | |
163 | // values are used (see Init-function). // | |
abaf1f1d | 164 | // As an example on how to use this class to produce digits from hits // |
165 | // have a look at the macro hits2digits.C // | |
166 | // The production of summable digits is demonstrated in hits2sdigits.C // | |
167 | // and the subsequent conversion of the s-digits into normal digits is // | |
168 | // explained in sdigits2digits.C. // | |
f7336fa3 | 169 | // // |
170 | /////////////////////////////////////////////////////////////////////////////// | |
171 | ||
6798b56e | 172 | #include <stdlib.h> |
173 | ||
f7336fa3 | 174 | #include <TMath.h> |
175 | #include <TVector.h> | |
176 | #include <TRandom.h> | |
94de3818 | 177 | #include <TROOT.h> |
178 | #include <TTree.h> | |
793ff80c | 179 | #include <TFile.h> |
180 | #include <TF1.h> | |
abaf1f1d | 181 | #include <TList.h> |
85cbec76 | 182 | #include <TTask.h> |
793ff80c | 183 | |
184 | #include "AliRun.h" | |
db30bf0f | 185 | #include "AliMagF.h" |
85cbec76 | 186 | #include "AliRunDigitizer.h" |
f7336fa3 | 187 | |
188 | #include "AliTRD.h" | |
793ff80c | 189 | #include "AliTRDhit.h" |
f7336fa3 | 190 | #include "AliTRDdigitizer.h" |
da581aea | 191 | #include "AliTRDdataArrayI.h" |
192 | #include "AliTRDdataArrayF.h" | |
793ff80c | 193 | #include "AliTRDsegmentArray.h" |
da581aea | 194 | #include "AliTRDdigitsManager.h" |
793ff80c | 195 | #include "AliTRDgeometry.h" |
4487dad0 | 196 | #include "AliTRDparameter.h" |
f7336fa3 | 197 | |
198 | ClassImp(AliTRDdigitizer) | |
199 | ||
200 | //_____________________________________________________________________________ | |
85cbec76 | 201 | AliTRDdigitizer::AliTRDdigitizer() |
f7336fa3 | 202 | { |
203 | // | |
204 | // AliTRDdigitizer default constructor | |
205 | // | |
206 | ||
4487dad0 | 207 | fInputFile = 0; |
208 | fDigitsManager = 0; | |
209 | fSDigitsManagerList = 0; | |
210 | fSDigitsManager = 0; | |
211 | fTRD = 0; | |
212 | fGeo = 0; | |
213 | fPar = 0; | |
e23fbb27 | 214 | fMasks = 0; |
abaf1f1d | 215 | fEvent = 0; |
abaf1f1d | 216 | fCompress = kTRUE; |
e23fbb27 | 217 | fDebug = 0; |
abaf1f1d | 218 | fSDigits = kFALSE; |
219 | fSDigitsScale = 0.0; | |
4487dad0 | 220 | fMergeSignalOnly = kFALSE; |
f7336fa3 | 221 | |
222 | } | |
223 | ||
224 | //_____________________________________________________________________________ | |
225 | AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title) | |
85cbec76 | 226 | :AliDigitizer(name,title) |
f7336fa3 | 227 | { |
228 | // | |
85cbec76 | 229 | // AliTRDdigitizer constructor |
230 | // | |
231 | ||
4487dad0 | 232 | fInputFile = 0; |
233 | fDigitsManager = 0; | |
234 | fSDigitsManagerList = 0; | |
235 | fSDigitsManager = 0; | |
236 | fTRD = 0; | |
237 | fGeo = 0; | |
238 | fPar = 0; | |
e23fbb27 | 239 | fMasks = 0; |
85cbec76 | 240 | fEvent = 0; |
85cbec76 | 241 | fCompress = kTRUE; |
e23fbb27 | 242 | fDebug = 0; |
85cbec76 | 243 | fSDigits = kFALSE; |
4487dad0 | 244 | fMergeSignalOnly = kFALSE; |
85cbec76 | 245 | |
4487dad0 | 246 | // For the summable digits |
247 | fSDigitsScale = 100.; | |
85cbec76 | 248 | |
249 | } | |
250 | ||
251 | //_____________________________________________________________________________ | |
252 | AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager | |
253 | , const Text_t *name, const Text_t *title) | |
254 | :AliDigitizer(manager,name,title) | |
255 | { | |
256 | // | |
257 | // AliTRDdigitizer constructor | |
f7336fa3 | 258 | // |
259 | ||
4487dad0 | 260 | fInputFile = 0; |
261 | fDigitsManager = 0; | |
262 | fSDigitsManagerList = 0; | |
263 | fSDigitsManager = 0; | |
264 | fTRD = 0; | |
265 | fGeo = 0; | |
266 | fPar = 0; | |
bfc40adc | 267 | fMasks = 0; |
bfc40adc | 268 | fEvent = 0; |
bfc40adc | 269 | fCompress = kTRUE; |
270 | fDebug = 0; | |
271 | fSDigits = kFALSE; | |
4487dad0 | 272 | fMergeSignalOnly = kFALSE; |
bfc40adc | 273 | |
4487dad0 | 274 | // For the summable digits |
275 | fSDigitsScale = 100.; | |
bfc40adc | 276 | |
277 | } | |
278 | ||
279 | //_____________________________________________________________________________ | |
280 | AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager) | |
281 | :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer") | |
282 | { | |
283 | // | |
284 | // AliTRDdigitizer constructor | |
285 | // | |
286 | ||
4487dad0 | 287 | fInputFile = 0; |
288 | fDigitsManager = 0; | |
289 | fSDigitsManagerList = 0; | |
290 | fSDigitsManager = 0; | |
291 | fTRD = 0; | |
292 | fGeo = 0; | |
293 | fPar = 0; | |
e23fbb27 | 294 | fMasks = 0; |
abaf1f1d | 295 | fEvent = 0; |
abaf1f1d | 296 | fCompress = kTRUE; |
e23fbb27 | 297 | fDebug = 0; |
abaf1f1d | 298 | fSDigits = kFALSE; |
4487dad0 | 299 | fMergeSignalOnly = kFALSE; |
793ff80c | 300 | |
4487dad0 | 301 | // For the summable digits |
302 | fSDigitsScale = 100.; | |
f7336fa3 | 303 | |
304 | } | |
305 | ||
8230f242 | 306 | //_____________________________________________________________________________ |
dd9a6ee3 | 307 | AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d) |
8230f242 | 308 | { |
309 | // | |
310 | // AliTRDdigitizer copy constructor | |
311 | // | |
312 | ||
dd9a6ee3 | 313 | ((AliTRDdigitizer &) d).Copy(*this); |
8230f242 | 314 | |
315 | } | |
316 | ||
f7336fa3 | 317 | //_____________________________________________________________________________ |
318 | AliTRDdigitizer::~AliTRDdigitizer() | |
319 | { | |
8230f242 | 320 | // |
321 | // AliTRDdigitizer destructor | |
322 | // | |
f7336fa3 | 323 | |
324 | if (fInputFile) { | |
325 | fInputFile->Close(); | |
326 | delete fInputFile; | |
4487dad0 | 327 | fInputFile = 0; |
abaf1f1d | 328 | } |
329 | ||
330 | if (fDigitsManager) { | |
331 | delete fDigitsManager; | |
4487dad0 | 332 | fDigitsManager = 0; |
f7336fa3 | 333 | } |
334 | ||
abaf1f1d | 335 | if (fSDigitsManager) { |
336 | delete fSDigitsManager; | |
4487dad0 | 337 | fSDigitsManager = 0; |
f7336fa3 | 338 | } |
339 | ||
abaf1f1d | 340 | if (fSDigitsManagerList) { |
abaf1f1d | 341 | delete fSDigitsManagerList; |
4487dad0 | 342 | fSDigitsManagerList = 0; |
e23fbb27 | 343 | } |
344 | ||
345 | if (fMasks) { | |
346 | delete [] fMasks; | |
347 | fMasks = 0; | |
348 | } | |
349 | ||
f7336fa3 | 350 | } |
351 | ||
8230f242 | 352 | //_____________________________________________________________________________ |
dd9a6ee3 | 353 | AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d) |
354 | { | |
355 | // | |
356 | // Assignment operator | |
357 | // | |
358 | ||
359 | if (this != &d) ((AliTRDdigitizer &) d).Copy(*this); | |
360 | return *this; | |
361 | ||
362 | } | |
363 | ||
364 | //_____________________________________________________________________________ | |
365 | void AliTRDdigitizer::Copy(TObject &d) | |
8230f242 | 366 | { |
367 | // | |
368 | // Copy function | |
369 | // | |
370 | ||
4487dad0 | 371 | ((AliTRDdigitizer &) d).fInputFile = 0; |
372 | ((AliTRDdigitizer &) d).fSDigitsManagerList = 0; | |
373 | ((AliTRDdigitizer &) d).fSDigitsManager = 0; | |
374 | ((AliTRDdigitizer &) d).fDigitsManager = 0; | |
375 | ((AliTRDdigitizer &) d).fTRD = 0; | |
376 | ((AliTRDdigitizer &) d).fGeo = 0; | |
e23fbb27 | 377 | ((AliTRDdigitizer &) d).fMasks = 0; |
abaf1f1d | 378 | ((AliTRDdigitizer &) d).fEvent = 0; |
4487dad0 | 379 | ((AliTRDdigitizer &) d).fPar = 0; |
abaf1f1d | 380 | ((AliTRDdigitizer &) d).fCompress = fCompress; |
e23fbb27 | 381 | ((AliTRDdigitizer &) d).fDebug = fDebug ; |
abaf1f1d | 382 | ((AliTRDdigitizer &) d).fSDigits = fSDigits; |
383 | ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale; | |
4487dad0 | 384 | ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly; |
e23fbb27 | 385 | |
386 | } | |
387 | ||
e23fbb27 | 388 | //_____________________________________________________________________________ |
389 | void AliTRDdigitizer::Exec(Option_t* option) | |
390 | { | |
391 | // | |
392 | // Executes the merging | |
393 | // | |
394 | ||
395 | Int_t iInput; | |
396 | ||
397 | AliTRDdigitsManager *sdigitsManager; | |
398 | ||
399 | TString optionString = option; | |
400 | if (optionString.Contains("deb")) { | |
401 | fDebug = 1; | |
402 | if (optionString.Contains("2")) { | |
403 | fDebug = 2; | |
404 | } | |
405 | printf("<AliTRDdigitizer::Exec> "); | |
406 | printf("Called with debug option %d\n",fDebug); | |
407 | } | |
408 | ||
4487dad0 | 409 | // Connect the AliRoot file containing Geometry, Kine, and Hits |
410 | fInputFile = (TFile *) fManager->GetInputTreeTRDS(0)->GetCurrentFile(); | |
411 | if (!fInputFile) { | |
412 | if (fDebug > 0) { | |
413 | printf("<AliTRDdigitizer::Exec> "); | |
414 | printf("Cannot open the input file %s.\n",fInputFile->GetName()); | |
415 | } | |
416 | } | |
417 | ||
418 | if (gAlice) { | |
419 | delete gAlice; | |
420 | gAlice = 0; | |
421 | } | |
422 | gAlice = (AliRun *) fInputFile->Get("gAlice"); | |
423 | if (gAlice) { | |
424 | if (fDebug > 0) { | |
425 | printf("<AliTRDdigitizer::Exec> "); | |
426 | printf("AliRun object found on file.\n"); | |
427 | } | |
428 | } | |
429 | else { | |
430 | printf("<AliTRDdigitizer::Exec> "); | |
431 | printf("Could not find AliRun object.\n"); | |
432 | } | |
433 | ||
e23fbb27 | 434 | Int_t nInput = fManager->GetNinputs(); |
435 | fMasks = new Int_t[nInput]; | |
436 | for (iInput = 0; iInput < nInput; iInput++) { | |
437 | fMasks[iInput] = fManager->GetMask(iInput); | |
438 | } | |
e23fbb27 | 439 | |
440 | // Initialization | |
441 | InitDetector(); | |
442 | ||
443 | for (iInput = 0; iInput < nInput; iInput++) { | |
444 | ||
445 | if (fDebug > 0) { | |
446 | printf("<AliTRDdigitizer::Exec> "); | |
447 | printf("Add input stream %d\n",iInput); | |
448 | } | |
449 | ||
450 | // Read the s-digits via digits manager | |
451 | sdigitsManager = new AliTRDdigitsManager(); | |
452 | sdigitsManager->SetDebug(fDebug); | |
453 | sdigitsManager->SetSDigits(kTRUE); | |
454 | sdigitsManager->ReadDigits(fManager->GetInputTreeTRDS(iInput)); | |
455 | ||
456 | // Add the s-digits to the input list | |
457 | AddSDigitsManager(sdigitsManager); | |
458 | ||
459 | } | |
460 | ||
461 | // Convert the s-digits to normal digits | |
462 | if (fDebug > 0) { | |
463 | printf("<AliTRDdigitizer::Exec> "); | |
464 | printf("Do the conversion\n"); | |
465 | } | |
466 | SDigits2Digits(); | |
467 | ||
468 | // Store the digits | |
469 | if (fDebug > 0) { | |
470 | printf("<AliTRDdigitizer::Exec> "); | |
471 | printf("Write the digits\n"); | |
472 | } | |
473 | fDigitsManager->MakeBranch(fManager->GetTreeDTRD()); | |
474 | fDigitsManager->WriteDigits(); | |
475 | if (fDebug > 0) { | |
476 | printf("<AliTRDdigitizer::Exec> "); | |
477 | printf("Done\n"); | |
478 | } | |
479 | ||
b1113c6b | 480 | DeleteSDigitsManager(); |
481 | ||
e23fbb27 | 482 | } |
483 | ||
f7336fa3 | 484 | //_____________________________________________________________________________ |
e23fbb27 | 485 | Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent) |
f7336fa3 | 486 | { |
487 | // | |
488 | // Opens a ROOT-file with TRD-hits and reads in the hit-tree | |
489 | // | |
490 | ||
491 | // Connect the AliRoot file containing Geometry, Kine, and Hits | |
4487dad0 | 492 | fInputFile = (TFile *) gROOT->GetListOfFiles()->FindObject(file); |
f7336fa3 | 493 | if (!fInputFile) { |
e23fbb27 | 494 | if (fDebug > 0) { |
495 | printf("<AliTRDdigitizer::Open> "); | |
496 | printf("Open the AliROOT-file %s.\n",file); | |
abaf1f1d | 497 | } |
e23fbb27 | 498 | fInputFile = new TFile(file,"UPDATE"); |
f7336fa3 | 499 | } |
500 | else { | |
e23fbb27 | 501 | if (fDebug > 0) { |
502 | printf("<AliTRDdigitizer::Open> "); | |
503 | printf("%s is already open.\n",file); | |
abaf1f1d | 504 | } |
f7336fa3 | 505 | } |
506 | ||
4487dad0 | 507 | gAlice = (AliRun *) fInputFile->Get("gAlice"); |
da581aea | 508 | if (gAlice) { |
e23fbb27 | 509 | if (fDebug > 0) { |
510 | printf("<AliTRDdigitizer::Open> "); | |
abaf1f1d | 511 | printf("AliRun object found on file.\n"); |
512 | } | |
da581aea | 513 | } |
514 | else { | |
e23fbb27 | 515 | printf("<AliTRDdigitizer::Open> "); |
da581aea | 516 | printf("Could not find AliRun object.\n"); |
517 | return kFALSE; | |
518 | } | |
f7336fa3 | 519 | |
520 | fEvent = nEvent; | |
521 | ||
522 | // Import the Trees for the event nEvent in the file | |
523 | Int_t nparticles = gAlice->GetEvent(fEvent); | |
524 | if (nparticles <= 0) { | |
e23fbb27 | 525 | printf("<AliTRDdigitizer::Open> "); |
f7336fa3 | 526 | printf("No entries in the trees for event %d.\n",fEvent); |
527 | return kFALSE; | |
528 | } | |
529 | ||
abaf1f1d | 530 | if (InitDetector()) { |
531 | return MakeBranch(); | |
532 | } | |
533 | else { | |
534 | return kFALSE; | |
535 | } | |
793ff80c | 536 | |
537 | } | |
538 | ||
539 | //_____________________________________________________________________________ | |
540 | Bool_t AliTRDdigitizer::InitDetector() | |
541 | { | |
542 | // | |
543 | // Sets the pointer to the TRD detector and the geometry | |
544 | // | |
545 | ||
dd9a6ee3 | 546 | // Get the pointer to the detector class and check for version 1 |
4487dad0 | 547 | fTRD = (AliTRD *) gAlice->GetDetector("TRD"); |
dd9a6ee3 | 548 | if (fTRD->IsVersion() != 1) { |
e23fbb27 | 549 | printf("<AliTRDdigitizer::InitDetector> "); |
dd9a6ee3 | 550 | printf("TRD must be version 1 (slow simulator).\n"); |
551 | exit(1); | |
552 | } | |
553 | ||
554 | // Get the geometry | |
555 | fGeo = fTRD->GetGeometry(); | |
e23fbb27 | 556 | if (fDebug > 0) { |
557 | printf("<AliTRDdigitizer::InitDetector> "); | |
abaf1f1d | 558 | printf("Geometry version %d\n",fGeo->IsVersion()); |
559 | } | |
dd9a6ee3 | 560 | |
abaf1f1d | 561 | // Create a digits manager |
562 | fDigitsManager = new AliTRDdigitsManager(); | |
563 | fDigitsManager->SetSDigits(fSDigits); | |
564 | fDigitsManager->CreateArrays(); | |
565 | fDigitsManager->SetEvent(fEvent); | |
e23fbb27 | 566 | fDigitsManager->SetDebug(fDebug); |
abaf1f1d | 567 | |
568 | // The list for the input s-digits manager to be merged | |
569 | fSDigitsManagerList = new TList(); | |
570 | ||
4487dad0 | 571 | return kTRUE; |
f7336fa3 | 572 | |
573 | } | |
574 | ||
6244debe | 575 | //_____________________________________________________________________________ |
0a29d0f1 | 576 | Bool_t AliTRDdigitizer::MakeBranch(const Char_t *file) const |
6244debe | 577 | { |
abaf1f1d | 578 | // |
579 | // Create the branches for the digits array | |
6244debe | 580 | // |
581 | ||
abaf1f1d | 582 | return fDigitsManager->MakeBranch(file); |
6244debe | 583 | |
584 | } | |
585 | ||
f7336fa3 | 586 | //_____________________________________________________________________________ |
587 | Bool_t AliTRDdigitizer::MakeDigits() | |
588 | { | |
589 | // | |
872a7aba | 590 | // Creates digits. |
f7336fa3 | 591 | // |
592 | ||
f7336fa3 | 593 | /////////////////////////////////////////////////////////////// |
594 | // Parameter | |
595 | /////////////////////////////////////////////////////////////// | |
596 | ||
597 | // Converts number of electrons to fC | |
872a7aba | 598 | const Double_t kEl2fC = 1.602E-19 * 1.0E15; |
f7336fa3 | 599 | |
600 | /////////////////////////////////////////////////////////////// | |
601 | ||
793ff80c | 602 | // Number of pads included in the pad response |
603 | const Int_t kNpad = 3; | |
604 | ||
605 | // Number of track dictionary arrays | |
dd56b762 | 606 | const Int_t kNDict = AliTRDdigitsManager::kNDict; |
793ff80c | 607 | |
872a7aba | 608 | // Half the width of the amplification region |
609 | const Float_t kAmWidth = AliTRDgeometry::AmThick() / 2.; | |
610 | ||
c3a4830f | 611 | Int_t iRow, iCol, iTime, iPad; |
71d9fa7b | 612 | Int_t iDict = 0; |
793ff80c | 613 | Int_t nBytes = 0; |
f7336fa3 | 614 | |
615 | Int_t totalSizeDigits = 0; | |
616 | Int_t totalSizeDict0 = 0; | |
617 | Int_t totalSizeDict1 = 0; | |
618 | Int_t totalSizeDict2 = 0; | |
619 | ||
872a7aba | 620 | Int_t timeTRDbeg = 0; |
621 | Int_t timeTRDend = 1; | |
622 | ||
623 | Float_t pos[3]; | |
624 | Float_t rot[3]; | |
625 | Float_t xyz[3]; | |
626 | Float_t padSignal[kNpad]; | |
627 | Float_t signalOld[kNpad]; | |
628 | ||
793ff80c | 629 | AliTRDdataArrayF *signals = 0; |
630 | AliTRDdataArrayI *digits = 0; | |
8230f242 | 631 | AliTRDdataArrayI *dictionary[kNDict]; |
da581aea | 632 | |
4487dad0 | 633 | // Create a default parameter class if none is defined |
634 | if (!fPar) { | |
635 | fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter"); | |
636 | if (fDebug > 0) { | |
637 | printf("<AliTRDdigitizer::MakeDigits> "); | |
638 | printf("Create the default parameter object\n"); | |
639 | } | |
640 | } | |
641 | ||
793ff80c | 642 | // Create a container for the amplitudes |
643 | AliTRDsegmentArray *signalsArray | |
e23fbb27 | 644 | = new AliTRDsegmentArray("AliTRDdataArrayF" |
645 | ,AliTRDgeometry::Ndet()); | |
793ff80c | 646 | |
4487dad0 | 647 | if (fPar->TRFOn()) { |
648 | timeTRDbeg = ((Int_t) (-fPar->GetTRFlo() / fPar->GetTimeBinSize())) - 1; | |
649 | timeTRDend = ((Int_t) ( fPar->GetTRFhi() / fPar->GetTimeBinSize())) - 1; | |
e23fbb27 | 650 | if (fDebug > 0) { |
651 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 652 | printf("Sample the TRF between -%d and %d\n",timeTRDbeg,timeTRDend); |
653 | } | |
da581aea | 654 | } |
655 | ||
4487dad0 | 656 | Float_t elAttachProp = fPar->GetElAttachProp() / 100.; |
793ff80c | 657 | |
872a7aba | 658 | if (!fGeo) { |
e23fbb27 | 659 | printf("<AliTRDdigitizer::MakeDigits> "); |
872a7aba | 660 | printf("No geometry defined\n"); |
661 | return kFALSE; | |
662 | } | |
663 | ||
e23fbb27 | 664 | if (fDebug > 0) { |
665 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 666 | printf("Start creating digits.\n"); |
667 | } | |
872a7aba | 668 | |
793ff80c | 669 | // Get the pointer to the hit tree |
0a29d0f1 | 670 | TTree *hitTree = gAlice->TreeH(); |
793ff80c | 671 | |
672 | // Get the number of entries in the hit tree | |
673 | // (Number of primary particles creating a hit somewhere) | |
0a29d0f1 | 674 | Int_t nTrack = (Int_t) hitTree->GetEntries(); |
e23fbb27 | 675 | if (fDebug > 0) { |
676 | printf("<AliTRDdigitizer::MakeDigits> "); | |
793ff80c | 677 | printf("Found %d primary particles\n",nTrack); |
678 | } | |
679 | ||
680 | Int_t detectorOld = -1; | |
681 | Int_t countHits = 0; | |
682 | ||
683 | // Loop through all entries in the tree | |
684 | for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) { | |
685 | ||
686 | gAlice->ResetHits(); | |
0a29d0f1 | 687 | nBytes += hitTree->GetEvent(iTrack); |
793ff80c | 688 | |
e23fbb27 | 689 | // Loop through the TRD hits |
690 | Int_t iHit = 0; | |
691 | AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1); | |
692 | while (hit) { | |
693 | ||
793ff80c | 694 | countHits++; |
e23fbb27 | 695 | iHit++; |
696 | ||
697 | pos[0] = hit->X(); | |
698 | pos[1] = hit->Y(); | |
699 | pos[2] = hit->Z(); | |
700 | Float_t q = hit->GetCharge(); | |
701 | Int_t track = hit->Track(); | |
702 | Int_t detector = hit->GetDetector(); | |
703 | Int_t plane = fGeo->GetPlane(detector); | |
704 | Int_t sector = fGeo->GetSector(detector); | |
705 | Int_t chamber = fGeo->GetChamber(detector); | |
4487dad0 | 706 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
707 | Int_t nColMax = fPar->GetColMax(plane); | |
708 | Int_t nTimeMax = fPar->GetTimeMax(); | |
709 | Int_t nTimeBefore = fPar->GetTimeBefore(); | |
710 | Int_t nTimeAfter = fPar->GetTimeAfter(); | |
711 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
712 | Float_t row0 = fPar->GetRow0(plane,chamber,sector); | |
713 | Float_t col0 = fPar->GetCol0(plane); | |
714 | Float_t time0 = fPar->GetTime0(plane); | |
715 | Float_t rowPadSize = fPar->GetRowPadSize(plane,chamber,sector); | |
716 | Float_t colPadSize = fPar->GetColPadSize(plane); | |
717 | Float_t timeBinSize = fPar->GetTimeBinSize(); | |
872a7aba | 718 | Float_t divideRow = 1.0 / rowPadSize; |
719 | Float_t divideCol = 1.0 / colPadSize; | |
720 | Float_t divideTime = 1.0 / timeBinSize; | |
793ff80c | 721 | |
e23fbb27 | 722 | if (fDebug > 1) { |
793ff80c | 723 | printf("Analyze hit no. %d ",iHit); |
724 | printf("-----------------------------------------------------------\n"); | |
725 | hit->Dump(); | |
726 | printf("plane = %d, sector = %d, chamber = %d\n" | |
727 | ,plane,sector,chamber); | |
728 | printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n" | |
729 | ,nRowMax,nColMax,nTimeMax); | |
872a7aba | 730 | printf("nTimeBefore = %d, nTimeAfter = %d, nTimeTotal = %d\n" |
731 | ,nTimeBefore,nTimeAfter,nTimeTotal); | |
793ff80c | 732 | printf("row0 = %f, col0 = %f, time0 = %f\n" |
733 | ,row0,col0,time0); | |
c1e4b257 | 734 | printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n" |
735 | ,rowPadSize,colPadSize,timeBinSize); | |
793ff80c | 736 | } |
737 | ||
e23fbb27 | 738 | // Don't analyze test hits and switched off detectors |
739 | if ((CheckDetector(plane,chamber,sector)) && | |
740 | (((Int_t) q) != 0)) { | |
dd56b762 | 741 | |
e23fbb27 | 742 | if (detector != detectorOld) { |
e153aaf6 | 743 | |
e23fbb27 | 744 | if (fDebug > 1) { |
745 | printf("<AliTRDdigitizer::MakeDigits> "); | |
746 | printf("Get new container. New det = %d, Old det = %d\n" | |
747 | ,detector,detectorOld); | |
dd9a6ee3 | 748 | } |
e23fbb27 | 749 | // Compress the old one if enabled |
750 | if ((fCompress) && (detectorOld > -1)) { | |
751 | if (fDebug > 1) { | |
752 | printf("<AliTRDdigitizer::MakeDigits> "); | |
753 | printf("Compress the old container ..."); | |
754 | } | |
755 | signals->Compress(1,0); | |
756 | for (iDict = 0; iDict < kNDict; iDict++) { | |
757 | dictionary[iDict]->Compress(1,0); | |
c1e4b257 | 758 | } |
e23fbb27 | 759 | if (fDebug > 1) printf("done\n"); |
793ff80c | 760 | } |
e23fbb27 | 761 | // Get the new container |
762 | signals = (AliTRDdataArrayF *) signalsArray->At(detector); | |
763 | if (signals->GetNtime() == 0) { | |
764 | // Allocate a new one if not yet existing | |
765 | if (fDebug > 1) { | |
766 | printf("<AliTRDdigitizer::MakeDigits> "); | |
767 | printf("Allocate a new container ... "); | |
768 | } | |
769 | signals->Allocate(nRowMax,nColMax,nTimeTotal); | |
793ff80c | 770 | } |
771 | else { | |
e23fbb27 | 772 | // Expand an existing one |
773 | if (fCompress) { | |
774 | if (fDebug > 1) { | |
775 | printf("<AliTRDdigitizer::MakeDigits> "); | |
776 | printf("Expand an existing container ... "); | |
777 | } | |
778 | signals->Expand(); | |
779 | } | |
793ff80c | 780 | } |
e23fbb27 | 781 | // The same for the dictionary |
782 | for (iDict = 0; iDict < kNDict; iDict++) { | |
783 | dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict); | |
784 | if (dictionary[iDict]->GetNtime() == 0) { | |
785 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
786 | } | |
787 | else { | |
788 | if (fCompress) dictionary[iDict]->Expand(); | |
789 | } | |
790 | } | |
791 | if (fDebug > 1) printf("done\n"); | |
792 | detectorOld = detector; | |
793ff80c | 793 | } |
794 | ||
e23fbb27 | 795 | // Rotate the sectors on top of each other |
796 | fGeo->Rotate(detector,pos,rot); | |
797 | ||
798 | // The driftlength. It is negative if the hit is in the | |
799 | // amplification region. | |
800 | Float_t driftlength = time0 - rot[0]; | |
801 | ||
802 | // Take also the drift in the amplification region into account | |
803 | // The drift length is at the moment still the same, regardless of | |
804 | // the position relativ to the wire. This non-isochronity needs still | |
805 | // to be implemented. | |
806 | Float_t driftlengthL = TMath::Abs(driftlength + kAmWidth); | |
4487dad0 | 807 | if (fPar->ExBOn()) driftlengthL /= TMath::Sqrt(fPar->GetLorentzFactor()); |
e23fbb27 | 808 | |
809 | // Loop over all electrons of this hit | |
810 | // TR photons produce hits with negative charge | |
811 | Int_t nEl = ((Int_t) TMath::Abs(q)); | |
812 | for (Int_t iEl = 0; iEl < nEl; iEl++) { | |
813 | ||
814 | xyz[0] = rot[0]; | |
815 | xyz[1] = rot[1]; | |
816 | xyz[2] = rot[2]; | |
817 | ||
818 | // Electron attachment | |
4487dad0 | 819 | if (fPar->ElAttachOn()) { |
e23fbb27 | 820 | if (gRandom->Rndm() < (driftlengthL * elAttachProp)) |
821 | continue; | |
822 | } | |
823 | ||
824 | // Apply the diffusion smearing | |
4487dad0 | 825 | if (fPar->DiffusionOn()) { |
826 | if (!(fPar->Diffusion(driftlengthL,xyz))) continue; | |
e23fbb27 | 827 | } |
f7336fa3 | 828 | |
e23fbb27 | 829 | // Apply E x B effects (depends on drift direction) |
4487dad0 | 830 | if (fPar->ExBOn()) { |
831 | if (!(fPar->ExB(driftlength+kAmWidth,xyz))) continue; | |
e23fbb27 | 832 | } |
793ff80c | 833 | |
e23fbb27 | 834 | // The electron position after diffusion and ExB in pad coordinates |
835 | // The pad row (z-direction) | |
836 | Float_t rowDist = xyz[2] - row0; | |
837 | Int_t rowE = ((Int_t) (rowDist * divideRow)); | |
838 | if ((rowE < 0) || (rowE >= nRowMax)) continue; | |
839 | Float_t rowOffset = ((((Float_t) rowE) + 0.5) * rowPadSize) - rowDist; | |
840 | ||
841 | // The pad column (rphi-direction) | |
4487dad0 | 842 | Float_t col0tilt = fPar->Col0Tilted(col0,rowOffset,plane); |
e23fbb27 | 843 | Float_t colDist = xyz[1] - col0tilt; |
844 | Int_t colE = ((Int_t) (colDist * divideCol)); | |
845 | if ((colE < 0) || (colE >= nColMax)) continue; | |
846 | Float_t colOffset = ((((Float_t) colE) + 0.5) * colPadSize) - colDist; | |
847 | ||
848 | // The time bin (negative for hits in the amplification region) | |
849 | // In the amplification region the electrons drift from both sides | |
850 | // to the middle (anode wire plane) | |
851 | Float_t timeDist = time0 - xyz[0]; | |
852 | Float_t timeOffset = 0; | |
853 | Int_t timeE = 0; | |
854 | if (timeDist > 0) { | |
855 | // The time bin | |
856 | timeE = ((Int_t) (timeDist * divideTime)); | |
857 | // The distance of the position to the middle of the timebin | |
858 | timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) - timeDist; | |
859 | } | |
860 | else { | |
861 | // Difference between half of the amplification gap width and | |
862 | // the distance to the anode wire | |
863 | Float_t anodeDist = kAmWidth - TMath::Abs(timeDist + kAmWidth); | |
864 | // The time bin | |
865 | timeE = -1 * (((Int_t ) (anodeDist * divideTime)) + 1); | |
866 | // The distance of the position to the middle of the timebin | |
867 | timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) + anodeDist; | |
868 | } | |
872a7aba | 869 | |
e23fbb27 | 870 | // Apply the gas gain including fluctuations |
871 | Float_t ggRndm = 0.0; | |
872 | do { | |
873 | ggRndm = gRandom->Rndm(); | |
874 | } while (ggRndm <= 0); | |
4487dad0 | 875 | Int_t signal = (Int_t) (-fPar->GetGasGain() * TMath::Log(ggRndm)); |
e23fbb27 | 876 | |
877 | // Apply the pad response | |
4487dad0 | 878 | if (fPar->PRFOn()) { |
e23fbb27 | 879 | // The distance of the electron to the center of the pad |
880 | // in units of pad width | |
881 | Float_t dist = - colOffset * divideCol; | |
4487dad0 | 882 | if (!(fPar->PadResponse(signal,dist,plane,padSignal))) continue; |
793ff80c | 883 | } |
e23fbb27 | 884 | else { |
885 | padSignal[0] = 0.0; | |
886 | padSignal[1] = signal; | |
887 | padSignal[2] = 0.0; | |
888 | } | |
889 | ||
890 | // Sample the time response inside the drift region | |
891 | // + additional time bins before and after. | |
892 | // The sampling is done always in the middle of the time bin | |
893 | for (Int_t iTimeBin = TMath::Max(timeE-timeTRDbeg, -nTimeBefore) | |
894 | ;iTimeBin < TMath::Min(timeE+timeTRDend,nTimeMax+nTimeAfter ) | |
895 | ;iTimeBin++) { | |
896 | ||
897 | // Apply the time response | |
898 | Float_t timeResponse = 1.0; | |
899 | Float_t crossTalk = 0.0; | |
900 | Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset; | |
4487dad0 | 901 | if (fPar->TRFOn()) { |
902 | timeResponse = fPar->TimeResponse(time); | |
e23fbb27 | 903 | } |
4487dad0 | 904 | if (fPar->CTOn()) { |
905 | crossTalk = fPar->CrossTalk(time); | |
e23fbb27 | 906 | } |
907 | ||
908 | signalOld[0] = 0.0; | |
909 | signalOld[1] = 0.0; | |
910 | signalOld[2] = 0.0; | |
f7336fa3 | 911 | |
e23fbb27 | 912 | for (iPad = 0; iPad < kNpad; iPad++) { |
913 | ||
914 | Int_t colPos = colE + iPad - 1; | |
915 | if (colPos < 0) continue; | |
916 | if (colPos >= nColMax) break; | |
917 | ||
918 | // Add the signals | |
919 | // Note: The time bin number is shifted by nTimeBefore to avoid negative | |
920 | // time bins. This has to be subtracted later. | |
921 | Int_t iCurrentTimeBin = iTimeBin + nTimeBefore; | |
922 | signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin); | |
923 | if( colPos != colE ) { | |
924 | signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk); | |
925 | } | |
926 | else { | |
927 | signalOld[iPad] += padSignal[iPad] * timeResponse; | |
928 | } | |
929 | signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]); | |
930 | ||
931 | // Store the track index in the dictionary | |
932 | // Note: We store index+1 in order to allow the array to be compressed | |
933 | if (signalOld[iPad] > 0) { | |
934 | for (iDict = 0; iDict < kNDict; iDict++) { | |
935 | Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE | |
936 | ,colPos | |
937 | ,iCurrentTimeBin); | |
938 | if (oldTrack == track+1) break; | |
939 | if (oldTrack == 0) { | |
940 | dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1); | |
941 | break; | |
942 | } | |
71d9fa7b | 943 | } |
944 | } | |
872a7aba | 945 | |
e23fbb27 | 946 | } // Loop: pads |
f7336fa3 | 947 | |
e23fbb27 | 948 | } // Loop: time bins |
f7336fa3 | 949 | |
e23fbb27 | 950 | } // Loop: electrons of a single hit |
f7336fa3 | 951 | |
e23fbb27 | 952 | } // If: detector and test hit |
f7336fa3 | 953 | |
e23fbb27 | 954 | hit = (AliTRDhit *) fTRD->NextHit(); |
f7336fa3 | 955 | |
e23fbb27 | 956 | } // Loop: hits of one primary track |
957 | ||
958 | } // Loop: primary tracks | |
959 | ||
960 | if (fDebug > 0) { | |
961 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 962 | printf("Finished analyzing %d hits\n",countHits); |
963 | } | |
793ff80c | 964 | |
6244debe | 965 | // The total conversion factor |
4487dad0 | 966 | Float_t convert = kEl2fC * fPar->GetPadCoupling() |
967 | * fPar->GetTimeCoupling() | |
968 | * fPar->GetChipGain(); | |
6244debe | 969 | |
793ff80c | 970 | // Loop through all chambers to finalize the digits |
971 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
972 | ||
872a7aba | 973 | Int_t plane = fGeo->GetPlane(iDet); |
974 | Int_t sector = fGeo->GetSector(iDet); | |
975 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 976 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
977 | Int_t nColMax = fPar->GetColMax(plane); | |
978 | Int_t nTimeMax = fPar->GetTimeMax(); | |
979 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
793ff80c | 980 | |
e23fbb27 | 981 | Double_t *inADC = new Double_t[nTimeTotal]; |
982 | Double_t *outADC = new Double_t[nTimeTotal]; | |
983 | ||
984 | if (fDebug > 0) { | |
985 | printf("<AliTRDdigitizer::MakeDigits> "); | |
793ff80c | 986 | printf("Digitization for chamber %d\n",iDet); |
987 | } | |
da581aea | 988 | |
793ff80c | 989 | // Add a container for the digits of this detector |
abaf1f1d | 990 | digits = fDigitsManager->GetDigits(iDet); |
793ff80c | 991 | // Allocate memory space for the digits buffer |
872a7aba | 992 | digits->Allocate(nRowMax,nColMax,nTimeTotal); |
da581aea | 993 | |
793ff80c | 994 | // Get the signal container |
995 | signals = (AliTRDdataArrayF *) signalsArray->At(iDet); | |
996 | if (signals->GetNtime() == 0) { | |
997 | // Create missing containers | |
872a7aba | 998 | signals->Allocate(nRowMax,nColMax,nTimeTotal); |
793ff80c | 999 | } |
1000 | else { | |
1001 | // Expand the container if neccessary | |
1002 | if (fCompress) signals->Expand(); | |
1003 | } | |
1004 | // Create the missing dictionary containers | |
1005 | for (iDict = 0; iDict < kNDict; iDict++) { | |
abaf1f1d | 1006 | dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict); |
793ff80c | 1007 | if (dictionary[iDict]->GetNtime() == 0) { |
872a7aba | 1008 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); |
793ff80c | 1009 | } |
1010 | } | |
f7336fa3 | 1011 | |
793ff80c | 1012 | Int_t nDigits = 0; |
1013 | ||
6244debe | 1014 | // Don't create noise in detectors that are switched off |
1015 | if (CheckDetector(plane,chamber,sector)) { | |
1016 | ||
1017 | // Create the digits for this chamber | |
872a7aba | 1018 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
1019 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
6244debe | 1020 | |
e23fbb27 | 1021 | // Create summable digits |
1022 | if (fSDigits) { | |
6244debe | 1023 | |
e23fbb27 | 1024 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
872a7aba | 1025 | Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime); |
abaf1f1d | 1026 | signalAmp *= fSDigitsScale; |
e23fbb27 | 1027 | signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9); |
abaf1f1d | 1028 | Int_t adc = (Int_t) signalAmp; |
4487dad0 | 1029 | if (adc > 0) nDigits++; |
872a7aba | 1030 | digits->SetDataUnchecked(iRow,iCol,iTime,adc); |
c1e4b257 | 1031 | } |
6244debe | 1032 | |
e23fbb27 | 1033 | } |
1034 | // Create normal digits | |
1035 | else { | |
6244debe | 1036 | |
e23fbb27 | 1037 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
1038 | Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime); | |
6244debe | 1039 | // Add the noise |
4487dad0 | 1040 | signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fPar->GetNoise()),0.0); |
6244debe | 1041 | // Convert to mV |
1042 | signalAmp *= convert; | |
1043 | // Convert to ADC counts. Set the overflow-bit fADCoutRange if the | |
1044 | // signal is larger than fADCinRange | |
1045 | Int_t adc = 0; | |
4487dad0 | 1046 | if (signalAmp >= fPar->GetADCinRange()) { |
1047 | adc = ((Int_t) fPar->GetADCoutRange()); | |
6244debe | 1048 | } |
1049 | else { | |
4487dad0 | 1050 | adc = ((Int_t) (signalAmp * (fPar->GetADCoutRange() |
1051 | / fPar->GetADCinRange()))); | |
6244debe | 1052 | } |
e23fbb27 | 1053 | inADC[iTime] = adc; |
1054 | outADC[iTime] = adc; | |
1055 | } | |
6244debe | 1056 | |
e23fbb27 | 1057 | // Apply the tail cancelation via the digital filter |
4487dad0 | 1058 | if (fPar->TCOn()) { |
1059 | DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp()); | |
e23fbb27 | 1060 | } |
1061 | ||
1062 | for (iTime = 0; iTime < nTimeTotal; iTime++) { | |
6244debe | 1063 | // Store the amplitude of the digit if above threshold |
4487dad0 | 1064 | if (outADC[iTime] > fPar->GetADCthreshold()) { |
e23fbb27 | 1065 | if (fDebug > 2) { |
1066 | printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n" | |
1067 | ,iRow,iCol,iTime,outADC[iTime]); | |
6244debe | 1068 | } |
1069 | nDigits++; | |
e23fbb27 | 1070 | digits->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); |
6244debe | 1071 | } |
6244debe | 1072 | } |
1073 | ||
1074 | } | |
e23fbb27 | 1075 | |
6244debe | 1076 | } |
793ff80c | 1077 | } |
6244debe | 1078 | |
793ff80c | 1079 | } |
1080 | ||
1081 | // Compress the arrays | |
1082 | digits->Compress(1,0); | |
1083 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1084 | dictionary[iDict]->Compress(1,0); | |
1085 | } | |
f7336fa3 | 1086 | |
793ff80c | 1087 | totalSizeDigits += digits->GetSize(); |
1088 | totalSizeDict0 += dictionary[0]->GetSize(); | |
1089 | totalSizeDict1 += dictionary[1]->GetSize(); | |
1090 | totalSizeDict2 += dictionary[2]->GetSize(); | |
f7336fa3 | 1091 | |
c1e4b257 | 1092 | Float_t nPixel = nRowMax * nColMax * nTimeMax; |
e23fbb27 | 1093 | if (fDebug > 0) { |
1094 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 1095 | printf("Found %d digits in detector %d (%3.0f).\n" |
1096 | ,nDigits,iDet | |
1097 | ,100.0 * ((Float_t) nDigits) / nPixel); | |
1098 | } | |
1099 | ||
793ff80c | 1100 | if (fCompress) signals->Compress(1,0); |
f7336fa3 | 1101 | |
e23fbb27 | 1102 | delete [] inADC; |
1103 | delete [] outADC; | |
1104 | ||
f7336fa3 | 1105 | } |
1106 | ||
e23fbb27 | 1107 | if (fDebug > 0) { |
1108 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 1109 | printf("Total number of analyzed hits = %d\n",countHits); |
e23fbb27 | 1110 | printf("<AliTRDdigitizer::MakeDigits> "); |
abaf1f1d | 1111 | printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits |
1112 | ,totalSizeDict0 | |
1113 | ,totalSizeDict1 | |
1114 | ,totalSizeDict2); | |
1115 | } | |
1116 | ||
1117 | return kTRUE; | |
1118 | ||
1119 | } | |
1120 | ||
1121 | //_____________________________________________________________________________ | |
1122 | void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man) | |
1123 | { | |
1124 | // | |
1125 | // Add a digits manager for s-digits to the input list. | |
1126 | // | |
1127 | ||
1128 | fSDigitsManagerList->Add(man); | |
1129 | ||
1130 | } | |
1131 | ||
b1113c6b | 1132 | //_____________________________________________________________________________ |
1133 | void AliTRDdigitizer::DeleteSDigitsManager() | |
1134 | { | |
1135 | // | |
1136 | // Removes digits manager from the input list. | |
1137 | // | |
1138 | ||
1139 | fSDigitsManagerList->Delete(); | |
1140 | ||
1141 | } | |
1142 | ||
abaf1f1d | 1143 | //_____________________________________________________________________________ |
1144 | Bool_t AliTRDdigitizer::ConvertSDigits() | |
1145 | { | |
1146 | // | |
1147 | // Converts s-digits to normal digits | |
1148 | // | |
1149 | ||
1150 | // Number of track dictionary arrays | |
1151 | const Int_t kNDict = AliTRDdigitsManager::kNDict; | |
1152 | ||
1153 | // Converts number of electrons to fC | |
1154 | const Double_t kEl2fC = 1.602E-19 * 1.0E15; | |
1155 | ||
1156 | Int_t iDict = 0; | |
e23fbb27 | 1157 | Int_t iRow; |
1158 | Int_t iCol; | |
1159 | Int_t iTime; | |
abaf1f1d | 1160 | |
4487dad0 | 1161 | if (!fPar) { |
1162 | fPar = new AliTRDparameter("TRDparameter","Standard parameter"); | |
1163 | if (fDebug > 0) { | |
1164 | printf("<AliTRDdigitizer::ConvertSDigits> "); | |
1165 | printf("Create the default parameter object\n"); | |
1166 | } | |
abaf1f1d | 1167 | } |
1168 | ||
1169 | Double_t sDigitsScale = 1.0 / GetSDigitsScale(); | |
4487dad0 | 1170 | Double_t noise = fPar->GetNoise(); |
1171 | Double_t padCoupling = fPar->GetPadCoupling(); | |
1172 | Double_t timeCoupling = fPar->GetTimeCoupling(); | |
1173 | Double_t chipGain = fPar->GetChipGain(); | |
abaf1f1d | 1174 | Double_t convert = kEl2fC * padCoupling * timeCoupling * chipGain;; |
4487dad0 | 1175 | Double_t adcInRange = fPar->GetADCinRange(); |
1176 | Double_t adcOutRange = fPar->GetADCoutRange(); | |
1177 | Int_t adcThreshold = fPar->GetADCthreshold(); | |
abaf1f1d | 1178 | |
1179 | AliTRDdataArrayI *digitsIn; | |
1180 | AliTRDdataArrayI *digitsOut; | |
1181 | AliTRDdataArrayI *dictionaryIn[kNDict]; | |
1182 | AliTRDdataArrayI *dictionaryOut[kNDict]; | |
1183 | ||
1184 | // Loop through the detectors | |
1185 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
da581aea | 1186 | |
e23fbb27 | 1187 | if (fDebug > 0) { |
1188 | printf("<AliTRDdigitizer::ConvertSDigits> "); | |
abaf1f1d | 1189 | printf("Convert detector %d to digits.\n",iDet); |
1190 | } | |
1191 | ||
1192 | Int_t plane = fGeo->GetPlane(iDet); | |
1193 | Int_t sector = fGeo->GetSector(iDet); | |
1194 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 1195 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
1196 | Int_t nColMax = fPar->GetColMax(plane); | |
1197 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
abaf1f1d | 1198 | |
e23fbb27 | 1199 | Double_t *inADC = new Double_t[nTimeTotal]; |
1200 | Double_t *outADC = new Double_t[nTimeTotal]; | |
1201 | ||
abaf1f1d | 1202 | digitsIn = fSDigitsManager->GetDigits(iDet); |
1203 | digitsIn->Expand(); | |
1204 | digitsOut = fDigitsManager->GetDigits(iDet); | |
1205 | digitsOut->Allocate(nRowMax,nColMax,nTimeTotal); | |
1206 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1207 | dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict); | |
1208 | dictionaryIn[iDict]->Expand(); | |
1209 | dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict); | |
1210 | dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
1211 | } | |
1212 | ||
e23fbb27 | 1213 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
1214 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
abaf1f1d | 1215 | |
e23fbb27 | 1216 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
abaf1f1d | 1217 | Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
1218 | signal *= sDigitsScale; | |
1219 | // Add the noise | |
1220 | signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),0.0); | |
1221 | // Convert to mV | |
1222 | signal *= convert; | |
1223 | // Convert to ADC counts. Set the overflow-bit adcOutRange if the | |
1224 | // signal is larger than adcInRange | |
1225 | Int_t adc = 0; | |
1226 | if (signal >= adcInRange) { | |
1227 | adc = ((Int_t) adcOutRange); | |
1228 | } | |
1229 | else { | |
1230 | adc = ((Int_t) (signal * (adcOutRange / adcInRange))); | |
1231 | } | |
e23fbb27 | 1232 | inADC[iTime] = adc; |
1233 | outADC[iTime] = adc; | |
1234 | } | |
1235 | ||
1236 | // Apply the tail cancelation via the digital filter | |
4487dad0 | 1237 | if (fPar->TCOn()) { |
1238 | DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp()); | |
e23fbb27 | 1239 | } |
1240 | ||
1241 | for (iTime = 0; iTime < nTimeTotal; iTime++) { | |
abaf1f1d | 1242 | // Store the amplitude of the digit if above threshold |
e23fbb27 | 1243 | if (outADC[iTime] > adcThreshold) { |
1244 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); | |
1245 | // Copy the dictionary | |
1246 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1247 | Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1248 | dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track); | |
1249 | } | |
abaf1f1d | 1250 | } |
abaf1f1d | 1251 | } |
e23fbb27 | 1252 | |
abaf1f1d | 1253 | } |
1254 | } | |
1255 | ||
1256 | if (fCompress) { | |
1257 | digitsIn->Compress(1,0); | |
1258 | digitsOut->Compress(1,0); | |
1259 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1260 | dictionaryIn[iDict]->Compress(1,0); | |
1261 | dictionaryOut[iDict]->Compress(1,0); | |
1262 | } | |
1263 | } | |
1264 | ||
e23fbb27 | 1265 | delete [] inADC; |
1266 | delete [] outADC; | |
1267 | ||
abaf1f1d | 1268 | } |
f7336fa3 | 1269 | |
1270 | return kTRUE; | |
1271 | ||
1272 | } | |
1273 | ||
16bf9884 | 1274 | //_____________________________________________________________________________ |
abaf1f1d | 1275 | Bool_t AliTRDdigitizer::MergeSDigits() |
16bf9884 | 1276 | { |
1277 | // | |
abaf1f1d | 1278 | // Merges the input s-digits: |
1279 | // - The amplitude of the different inputs are summed up. | |
1280 | // - Of the track IDs from the input dictionaries only one is | |
1281 | // kept for each input. This works for maximal 3 different merged inputs. | |
16bf9884 | 1282 | // |
1283 | ||
abaf1f1d | 1284 | // Number of track dictionary arrays |
1285 | const Int_t kNDict = AliTRDdigitsManager::kNDict; | |
1286 | ||
4487dad0 | 1287 | if (!fPar) { |
1288 | fPar = new AliTRDparameter("TRDparameter","Standard parameter"); | |
1289 | if (fDebug > 0) { | |
1290 | printf("<AliTRDdigitizer::MergeSDigits> "); | |
1291 | printf("Create the default parameter object\n"); | |
1292 | } | |
1293 | } | |
1294 | ||
abaf1f1d | 1295 | Int_t iDict = 0; |
e23fbb27 | 1296 | Int_t jDict = 0; |
abaf1f1d | 1297 | |
1298 | AliTRDdataArrayI *digitsA; | |
1299 | AliTRDdataArrayI *digitsB; | |
1300 | AliTRDdataArrayI *dictionaryA[kNDict]; | |
1301 | AliTRDdataArrayI *dictionaryB[kNDict]; | |
1302 | ||
1303 | // Get the first s-digits | |
1304 | fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First(); | |
1305 | if (!fSDigitsManager) return kFALSE; | |
1306 | ||
1307 | // Loop through the other sets of s-digits | |
1308 | AliTRDdigitsManager *mergeSDigitsManager; | |
1309 | mergeSDigitsManager = (AliTRDdigitsManager *) | |
1310 | fSDigitsManagerList->After(fSDigitsManager); | |
1311 | ||
e23fbb27 | 1312 | if (fDebug > 0) { |
abaf1f1d | 1313 | if (mergeSDigitsManager) { |
e23fbb27 | 1314 | printf("<AliTRDdigitizer::MergeSDigits> "); |
1315 | printf("Merge %d input files.\n",fSDigitsManagerList->GetSize()); | |
abaf1f1d | 1316 | } |
1317 | else { | |
e23fbb27 | 1318 | printf("<AliTRDdigitizer::MergeSDigits> "); |
abaf1f1d | 1319 | printf("Only one input file.\n"); |
1320 | } | |
1321 | } | |
1322 | ||
1323 | Int_t iMerge = 0; | |
1324 | while (mergeSDigitsManager) { | |
1325 | ||
1326 | iMerge++; | |
1327 | ||
1328 | // Loop through the detectors | |
1329 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
1330 | ||
1331 | Int_t plane = fGeo->GetPlane(iDet); | |
1332 | Int_t sector = fGeo->GetSector(iDet); | |
1333 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 1334 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
1335 | Int_t nColMax = fPar->GetColMax(plane); | |
1336 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
abaf1f1d | 1337 | |
1338 | // Loop through the pixels of one detector and add the signals | |
1339 | digitsA = fSDigitsManager->GetDigits(iDet); | |
1340 | digitsB = mergeSDigitsManager->GetDigits(iDet); | |
1341 | digitsA->Expand(); | |
1342 | digitsB->Expand(); | |
1343 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1344 | dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict); | |
1345 | dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict); | |
1346 | dictionaryA[iDict]->Expand(); | |
1347 | dictionaryB[iDict]->Expand(); | |
1348 | } | |
1349 | ||
4487dad0 | 1350 | // Merge only detectors that contain a signal |
1351 | Bool_t doMerge = kTRUE; | |
1352 | if (fMergeSignalOnly) { | |
1353 | if (digitsA->GetOverThreshold(0) == 0) { | |
1354 | doMerge = kFALSE; | |
1355 | } | |
abaf1f1d | 1356 | } |
1357 | ||
4487dad0 | 1358 | if (doMerge) { |
abaf1f1d | 1359 | |
4487dad0 | 1360 | if (fDebug > 0) { |
1361 | printf("<AliTRDdigitizer::MergeSDigits> "); | |
1362 | printf("Merge detector %d of input no.%d\n",iDet,iMerge+1); | |
1363 | } | |
abaf1f1d | 1364 | |
4487dad0 | 1365 | for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) { |
1366 | for (Int_t iCol = 0; iCol < nColMax; iCol++ ) { | |
1367 | for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) { | |
1368 | ||
1369 | // Add the amplitudes of the summable digits | |
1370 | Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime); | |
1371 | Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime); | |
1372 | ampA += ampB; | |
1373 | digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA); | |
1374 | ||
1375 | // Add the mask to the track id if defined. | |
1376 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1377 | Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1378 | if ((fMasks) && (trackB > 0)) { | |
1379 | for (jDict = 0; jDict < kNDict; jDict++) { | |
1380 | Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1381 | if (trackA == 0) { | |
1382 | trackA = trackB + fMasks[iMerge]; | |
1383 | dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA); | |
1384 | } | |
1385 | } | |
1386 | } | |
e23fbb27 | 1387 | } |
abaf1f1d | 1388 | |
4487dad0 | 1389 | } |
abaf1f1d | 1390 | } |
4487dad0 | 1391 | } |
1392 | ||
abaf1f1d | 1393 | } |
1394 | ||
1395 | if (fCompress) { | |
1396 | digitsA->Compress(1,0); | |
1397 | digitsB->Compress(1,0); | |
1398 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1399 | dictionaryA[iDict]->Compress(1,0); | |
1400 | dictionaryB[iDict]->Compress(1,0); | |
1401 | } | |
1402 | } | |
1403 | ||
1404 | } | |
1405 | ||
1406 | // The next set of s-digits | |
1407 | mergeSDigitsManager = (AliTRDdigitsManager *) | |
1408 | fSDigitsManagerList->After(mergeSDigitsManager); | |
1409 | ||
1410 | } | |
1411 | ||
16bf9884 | 1412 | return kTRUE; |
1413 | ||
1414 | } | |
1415 | ||
abaf1f1d | 1416 | //_____________________________________________________________________________ |
1417 | Bool_t AliTRDdigitizer::SDigits2Digits() | |
1418 | { | |
1419 | // | |
1420 | // Merges the input s-digits and converts them to normal digits | |
1421 | // | |
1422 | ||
1423 | if (!MergeSDigits()) return kFALSE; | |
1424 | ||
1425 | return ConvertSDigits(); | |
1426 | ||
1427 | } | |
1428 | ||
793ff80c | 1429 | //_____________________________________________________________________________ |
1430 | Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector) | |
1431 | { | |
1432 | // | |
1433 | // Checks whether a detector is enabled | |
1434 | // | |
1435 | ||
1436 | if ((fTRD->GetSensChamber() >= 0) && | |
1437 | (fTRD->GetSensChamber() != chamber)) return kFALSE; | |
1438 | if ((fTRD->GetSensPlane() >= 0) && | |
c1e4b257 | 1439 | (fTRD->GetSensPlane() != plane)) return kFALSE; |
793ff80c | 1440 | if ( fTRD->GetSensSector() >= 0) { |
1441 | Int_t sens1 = fTRD->GetSensSector(); | |
1442 | Int_t sens2 = sens1 + fTRD->GetSensSectorRange(); | |
1443 | sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect())) | |
1444 | * AliTRDgeometry::Nsect(); | |
1445 | if (sens1 < sens2) { | |
1446 | if ((sector < sens1) || (sector >= sens2)) return kFALSE; | |
1447 | } | |
1448 | else { | |
1449 | if ((sector < sens1) && (sector >= sens2)) return kFALSE; | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | return kTRUE; | |
1454 | ||
1455 | } | |
1456 | ||
f7336fa3 | 1457 | //_____________________________________________________________________________ |
0a29d0f1 | 1458 | Bool_t AliTRDdigitizer::WriteDigits() const |
f7336fa3 | 1459 | { |
1460 | // | |
1461 | // Writes out the TRD-digits and the dictionaries | |
1462 | // | |
1463 | ||
da581aea | 1464 | // Store the digits and the dictionary in the tree |
abaf1f1d | 1465 | return fDigitsManager->WriteDigits(); |
f7336fa3 | 1466 | |
1467 | } | |
793ff80c | 1468 | |
e23fbb27 | 1469 | //_____________________________________________________________________________ |
1470 | void AliTRDdigitizer::DeConvExp(Double_t *source, Double_t *target | |
1471 | , Int_t n, Int_t nexp) | |
1472 | { | |
1473 | // | |
1474 | // Does the deconvolution by the digital filter. | |
1475 | // | |
1476 | // Author: Marcus Gutfleisch, KIP Heidelberg | |
1477 | // Optimized for: New TRF from Venelin Angelov, simulated with CADENCE | |
1478 | // Pad-ground capacitance = 25 pF | |
1479 | // Pad-pad cross talk capacitance = 6 pF | |
1480 | // For 10 MHz digitization, corresponding to 20 time bins | |
1481 | // in the drift region | |
1482 | // | |
1483 | ||
1484 | Double_t rates[2]; | |
1485 | Double_t coefficients[2]; | |
1486 | ||
1487 | /* initialize (coefficient = alpha, rates = lambda) */ | |
1488 | ||
1489 | if( nexp == 1 ) { | |
1490 | rates[0] = 0.466998; | |
1491 | /* no rescaling */ | |
1492 | coefficients[0] = 1.0; | |
1493 | } | |
1494 | if( nexp == 2 ) { | |
1495 | rates[0] = 0.8988162; | |
1496 | coefficients[0] = 0.11392069; | |
1497 | rates[1] = 0.3745688; | |
1498 | coefficients[1] = 0.8860793; | |
1499 | /* no rescaling */ | |
1500 | Float_t sumc = coefficients[0]+coefficients[1]; | |
1501 | coefficients[0] /= sumc; | |
1502 | coefficients[1] /= sumc; | |
1503 | } | |
1504 | ||
1505 | Int_t i, k; | |
1506 | Double_t reminder[2]; | |
1507 | Double_t correction, result; | |
1508 | ||
1509 | /* attention: computation order is important */ | |
1510 | correction=0.0; | |
1511 | for ( k = 0; k < nexp; k++ ) reminder[k]=0.0; | |
1512 | ||
1513 | for ( i = 0; i < n; i++ ) { | |
1514 | result = ( source[i] - correction ); /* no rescaling */ | |
1515 | target[i] = result; | |
1516 | ||
1517 | for ( k = 0; k < nexp; k++ ) reminder[k] = rates[k] | |
1518 | * ( reminder[k] + coefficients[k] * result); | |
1519 | ||
1520 | correction=0.0; | |
1521 | for ( k = 0; k < nexp; k++ ) correction += reminder[k]; | |
1522 | } | |
1523 | ||
1524 | } | |
1525 | ||
8e64dd77 | 1526 | //_____________________________________________________________________________ |
1527 | void AliTRDdigitizer::InitOutput(TFile *file, Int_t iEvent) | |
1528 | { | |
1529 | // | |
1530 | // Initializes the output branches | |
1531 | // | |
1532 | ||
1533 | fEvent = iEvent; | |
1534 | fDigitsManager->MakeTreeAndBranches(file,iEvent); | |
1535 | ||
1536 | } |