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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 | $Log$ | |
c57e2264 | 18 | Revision 1.37 2002/04/29 11:50:47 cblume |
19 | Change initialization of gAlice in the merging case | |
20 | ||
cec4059b | 21 | Revision 1.36 2002/04/12 12:13:23 cblume |
22 | Add Jiris changes | |
23 | ||
8e64dd77 | 24 | Revision 1.35 2002/03/28 14:59:07 cblume |
25 | Coding conventions | |
26 | ||
0a29d0f1 | 27 | Revision 1.34 2002/03/25 20:00:44 cblume |
28 | Introduce parameter class and regions of interest for merging | |
29 | ||
4487dad0 | 30 | Revision 1.33 2002/02/12 17:32:03 cblume |
31 | Rearrange the deleting of the list of sdigitsmanager | |
32 | ||
b1113c6b | 33 | Revision 1.32 2002/02/12 16:07:21 cblume |
34 | Add new constructor | |
35 | ||
bfc40adc | 36 | Revision 1.31 2002/02/11 14:27:11 cblume |
37 | New pad plane design, new TRF+PRF, tail cancelation, cross talk | |
38 | ||
e23fbb27 | 39 | Revision 1.30 2001/11/19 08:44:08 cblume |
40 | Fix bugs reported by Rene | |
41 | ||
a1c3aded | 42 | Revision 1.29 2001/11/14 19:44:25 hristov |
43 | Numeric const casted (Alpha) | |
44 | ||
20c69486 | 45 | Revision 1.28 2001/11/14 16:35:58 cblume |
46 | Inherits now from AliDetector | |
47 | ||
85cbec76 | 48 | Revision 1.27 2001/11/14 10:50:45 cblume |
49 | Changes in digits IO. Add merging of summable digits | |
50 | ||
abaf1f1d | 51 | Revision 1.26 2001/11/06 17:19:41 cblume |
52 | Add detailed geometry and simple simulator | |
53 | ||
16bf9884 | 54 | Revision 1.25 2001/06/27 09:54:44 cblume |
55 | Moved fField initialization to InitDetector() | |
56 | ||
88fd7ccb | 57 | Revision 1.24 2001/05/21 16:45:47 hristov |
58 | Last minute changes (C.Blume) | |
59 | ||
db30bf0f | 60 | Revision 1.23 2001/05/07 08:04:48 cblume |
61 | New TRF and PRF. Speedup of the code. Digits from amplification region included | |
62 | ||
872a7aba | 63 | Revision 1.22 2001/03/30 14:40:14 cblume |
64 | Update of the digitization parameter | |
65 | ||
a3c76cdc | 66 | Revision 1.21 2001/03/13 09:30:35 cblume |
67 | Update of digitization. Moved digit branch definition to AliTRD | |
68 | ||
6244debe | 69 | Revision 1.20 2001/02/25 20:19:00 hristov |
70 | Minor correction: loop variable declared only once for HP, Sun | |
71 | ||
c3a4830f | 72 | Revision 1.19 2001/02/14 18:22:26 cblume |
73 | Change in the geometry of the padplane | |
74 | ||
71d9fa7b | 75 | Revision 1.18 2001/01/26 19:56:57 hristov |
76 | Major upgrade of AliRoot code | |
77 | ||
2ab0c725 | 78 | Revision 1.17 2000/12/08 12:53:27 cblume |
79 | Change in Copy() function for HP-compiler | |
80 | ||
1948ba0c | 81 | Revision 1.16 2000/12/07 12:20:46 cblume |
82 | Go back to array compression. Use sampled PRF to speed up digitization | |
83 | ||
e153aaf6 | 84 | Revision 1.15 2000/11/23 14:34:08 cblume |
85 | Fixed bug in expansion routine of arrays (initialize buffers properly) | |
86 | ||
259b9e4b | 87 | Revision 1.14 2000/11/20 08:54:44 cblume |
88 | Switch off compression as default | |
89 | ||
c1e4b257 | 90 | Revision 1.13 2000/11/10 14:57:52 cblume |
91 | Changes in the geometry constants for the DEC compiler | |
92 | ||
dd56b762 | 93 | Revision 1.12 2000/11/01 14:53:20 cblume |
94 | Merge with TRD-develop | |
95 | ||
793ff80c | 96 | Revision 1.1.4.9 2000/10/26 17:00:22 cblume |
97 | Fixed bug in CheckDetector() | |
98 | ||
99 | Revision 1.1.4.8 2000/10/23 13:41:35 cblume | |
100 | Added protection against Log(0) in the gas gain calulation | |
101 | ||
102 | Revision 1.1.4.7 2000/10/17 02:27:34 cblume | |
103 | Get rid of global constants | |
104 | ||
105 | Revision 1.1.4.6 2000/10/16 01:16:53 cblume | |
106 | Changed timebin 0 to be the one closest to the readout | |
107 | ||
108 | Revision 1.1.4.5 2000/10/15 23:34:29 cblume | |
109 | Faster version of the digitizer | |
110 | ||
111 | Revision 1.1.4.4 2000/10/06 16:49:46 cblume | |
112 | Made Getters const | |
113 | ||
114 | Revision 1.1.4.3 2000/10/04 16:34:58 cblume | |
115 | Replace include files by forward declarations | |
116 | ||
117 | Revision 1.1.4.2 2000/09/22 14:41:10 cblume | |
118 | Bug fix in PRF. Included time response. New structure | |
119 | ||
eda4336d | 120 | Revision 1.10 2000/10/05 07:27:53 cblume |
121 | Changes in the header-files by FCA | |
122 | ||
6798b56e | 123 | Revision 1.9 2000/10/02 21:28:19 fca |
124 | Removal of useless dependecies via forward declarations | |
125 | ||
94de3818 | 126 | Revision 1.8 2000/06/09 11:10:07 cblume |
127 | Compiler warnings and coding conventions, next round | |
128 | ||
dd9a6ee3 | 129 | Revision 1.7 2000/06/08 18:32:58 cblume |
130 | Make code compliant to coding conventions | |
131 | ||
8230f242 | 132 | Revision 1.6 2000/06/07 16:27:32 cblume |
133 | Try to remove compiler warnings on Sun and HP | |
134 | ||
9d0b222b | 135 | Revision 1.5 2000/05/09 16:38:57 cblume |
136 | Removed PadResponse(). Merge problem | |
137 | ||
f0a7bf65 | 138 | Revision 1.4 2000/05/08 15:53:45 cblume |
139 | Resolved merge conflict | |
140 | ||
da581aea | 141 | Revision 1.3 2000/04/28 14:49:27 cblume |
142 | Only one declaration of iDict in MakeDigits() | |
143 | ||
144 | Revision 1.1.4.1 2000/05/08 14:42:04 cblume | |
145 | Introduced AliTRDdigitsManager | |
28329a48 | 146 | |
1befd3b2 | 147 | Revision 1.1 2000/02/28 19:00:13 cblume |
148 | Add new TRD classes | |
149 | ||
f7336fa3 | 150 | */ |
151 | ||
152 | /////////////////////////////////////////////////////////////////////////////// | |
153 | // // | |
154 | // Creates and handles digits from TRD hits // | |
abaf1f1d | 155 | // Author: C. Blume (C.Blume@gsi.de) // |
f7336fa3 | 156 | // // |
157 | // The following effects are included: // | |
158 | // - Diffusion // | |
159 | // - ExB effects // | |
160 | // - Gas gain including fluctuations // | |
161 | // - Pad-response (simple Gaussian approximation) // | |
abaf1f1d | 162 | // - Time-response // |
f7336fa3 | 163 | // - Electronics noise // |
164 | // - Electronics gain // | |
165 | // - Digitization // | |
166 | // - ADC threshold // | |
167 | // The corresponding parameter can be adjusted via the various // | |
168 | // Set-functions. If these parameters are not explicitly set, default // | |
169 | // values are used (see Init-function). // | |
abaf1f1d | 170 | // As an example on how to use this class to produce digits from hits // |
171 | // have a look at the macro hits2digits.C // | |
172 | // The production of summable digits is demonstrated in hits2sdigits.C // | |
173 | // and the subsequent conversion of the s-digits into normal digits is // | |
174 | // explained in sdigits2digits.C. // | |
f7336fa3 | 175 | // // |
176 | /////////////////////////////////////////////////////////////////////////////// | |
177 | ||
6798b56e | 178 | #include <stdlib.h> |
179 | ||
f7336fa3 | 180 | #include <TMath.h> |
181 | #include <TVector.h> | |
182 | #include <TRandom.h> | |
94de3818 | 183 | #include <TROOT.h> |
184 | #include <TTree.h> | |
793ff80c | 185 | #include <TFile.h> |
186 | #include <TF1.h> | |
abaf1f1d | 187 | #include <TList.h> |
85cbec76 | 188 | #include <TTask.h> |
793ff80c | 189 | |
190 | #include "AliRun.h" | |
db30bf0f | 191 | #include "AliMagF.h" |
85cbec76 | 192 | #include "AliRunDigitizer.h" |
f7336fa3 | 193 | |
194 | #include "AliTRD.h" | |
793ff80c | 195 | #include "AliTRDhit.h" |
f7336fa3 | 196 | #include "AliTRDdigitizer.h" |
da581aea | 197 | #include "AliTRDdataArrayI.h" |
198 | #include "AliTRDdataArrayF.h" | |
793ff80c | 199 | #include "AliTRDsegmentArray.h" |
da581aea | 200 | #include "AliTRDdigitsManager.h" |
793ff80c | 201 | #include "AliTRDgeometry.h" |
4487dad0 | 202 | #include "AliTRDparameter.h" |
f7336fa3 | 203 | |
204 | ClassImp(AliTRDdigitizer) | |
205 | ||
206 | //_____________________________________________________________________________ | |
85cbec76 | 207 | AliTRDdigitizer::AliTRDdigitizer() |
f7336fa3 | 208 | { |
209 | // | |
210 | // AliTRDdigitizer default constructor | |
211 | // | |
212 | ||
4487dad0 | 213 | fInputFile = 0; |
214 | fDigitsManager = 0; | |
215 | fSDigitsManagerList = 0; | |
216 | fSDigitsManager = 0; | |
217 | fTRD = 0; | |
218 | fGeo = 0; | |
219 | fPar = 0; | |
e23fbb27 | 220 | fMasks = 0; |
abaf1f1d | 221 | fEvent = 0; |
abaf1f1d | 222 | fCompress = kTRUE; |
e23fbb27 | 223 | fDebug = 0; |
abaf1f1d | 224 | fSDigits = kFALSE; |
225 | fSDigitsScale = 0.0; | |
4487dad0 | 226 | fMergeSignalOnly = kFALSE; |
f7336fa3 | 227 | |
228 | } | |
229 | ||
230 | //_____________________________________________________________________________ | |
231 | AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title) | |
85cbec76 | 232 | :AliDigitizer(name,title) |
f7336fa3 | 233 | { |
234 | // | |
85cbec76 | 235 | // AliTRDdigitizer constructor |
236 | // | |
237 | ||
4487dad0 | 238 | fInputFile = 0; |
239 | fDigitsManager = 0; | |
240 | fSDigitsManagerList = 0; | |
241 | fSDigitsManager = 0; | |
242 | fTRD = 0; | |
243 | fGeo = 0; | |
244 | fPar = 0; | |
e23fbb27 | 245 | fMasks = 0; |
85cbec76 | 246 | fEvent = 0; |
85cbec76 | 247 | fCompress = kTRUE; |
e23fbb27 | 248 | fDebug = 0; |
85cbec76 | 249 | fSDigits = kFALSE; |
4487dad0 | 250 | fMergeSignalOnly = kFALSE; |
85cbec76 | 251 | |
4487dad0 | 252 | // For the summable digits |
253 | fSDigitsScale = 100.; | |
85cbec76 | 254 | |
255 | } | |
256 | ||
257 | //_____________________________________________________________________________ | |
258 | AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager | |
259 | , const Text_t *name, const Text_t *title) | |
260 | :AliDigitizer(manager,name,title) | |
261 | { | |
262 | // | |
263 | // AliTRDdigitizer constructor | |
f7336fa3 | 264 | // |
265 | ||
4487dad0 | 266 | fInputFile = 0; |
267 | fDigitsManager = 0; | |
268 | fSDigitsManagerList = 0; | |
269 | fSDigitsManager = 0; | |
270 | fTRD = 0; | |
271 | fGeo = 0; | |
272 | fPar = 0; | |
bfc40adc | 273 | fMasks = 0; |
bfc40adc | 274 | fEvent = 0; |
bfc40adc | 275 | fCompress = kTRUE; |
276 | fDebug = 0; | |
277 | fSDigits = kFALSE; | |
4487dad0 | 278 | fMergeSignalOnly = kFALSE; |
bfc40adc | 279 | |
4487dad0 | 280 | // For the summable digits |
281 | fSDigitsScale = 100.; | |
bfc40adc | 282 | |
283 | } | |
284 | ||
285 | //_____________________________________________________________________________ | |
286 | AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager) | |
287 | :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer") | |
288 | { | |
289 | // | |
290 | // AliTRDdigitizer constructor | |
291 | // | |
292 | ||
4487dad0 | 293 | fInputFile = 0; |
294 | fDigitsManager = 0; | |
295 | fSDigitsManagerList = 0; | |
296 | fSDigitsManager = 0; | |
297 | fTRD = 0; | |
298 | fGeo = 0; | |
299 | fPar = 0; | |
e23fbb27 | 300 | fMasks = 0; |
abaf1f1d | 301 | fEvent = 0; |
abaf1f1d | 302 | fCompress = kTRUE; |
e23fbb27 | 303 | fDebug = 0; |
abaf1f1d | 304 | fSDigits = kFALSE; |
4487dad0 | 305 | fMergeSignalOnly = kFALSE; |
793ff80c | 306 | |
4487dad0 | 307 | // For the summable digits |
308 | fSDigitsScale = 100.; | |
f7336fa3 | 309 | |
310 | } | |
311 | ||
8230f242 | 312 | //_____________________________________________________________________________ |
dd9a6ee3 | 313 | AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d) |
8230f242 | 314 | { |
315 | // | |
316 | // AliTRDdigitizer copy constructor | |
317 | // | |
318 | ||
dd9a6ee3 | 319 | ((AliTRDdigitizer &) d).Copy(*this); |
8230f242 | 320 | |
321 | } | |
322 | ||
f7336fa3 | 323 | //_____________________________________________________________________________ |
324 | AliTRDdigitizer::~AliTRDdigitizer() | |
325 | { | |
8230f242 | 326 | // |
327 | // AliTRDdigitizer destructor | |
328 | // | |
f7336fa3 | 329 | |
330 | if (fInputFile) { | |
331 | fInputFile->Close(); | |
332 | delete fInputFile; | |
4487dad0 | 333 | fInputFile = 0; |
abaf1f1d | 334 | } |
335 | ||
336 | if (fDigitsManager) { | |
337 | delete fDigitsManager; | |
4487dad0 | 338 | fDigitsManager = 0; |
f7336fa3 | 339 | } |
340 | ||
abaf1f1d | 341 | if (fSDigitsManager) { |
342 | delete fSDigitsManager; | |
4487dad0 | 343 | fSDigitsManager = 0; |
f7336fa3 | 344 | } |
345 | ||
abaf1f1d | 346 | if (fSDigitsManagerList) { |
abaf1f1d | 347 | delete fSDigitsManagerList; |
4487dad0 | 348 | fSDigitsManagerList = 0; |
e23fbb27 | 349 | } |
350 | ||
351 | if (fMasks) { | |
352 | delete [] fMasks; | |
353 | fMasks = 0; | |
354 | } | |
355 | ||
f7336fa3 | 356 | } |
357 | ||
8230f242 | 358 | //_____________________________________________________________________________ |
dd9a6ee3 | 359 | AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d) |
360 | { | |
361 | // | |
362 | // Assignment operator | |
363 | // | |
364 | ||
365 | if (this != &d) ((AliTRDdigitizer &) d).Copy(*this); | |
366 | return *this; | |
367 | ||
368 | } | |
369 | ||
370 | //_____________________________________________________________________________ | |
371 | void AliTRDdigitizer::Copy(TObject &d) | |
8230f242 | 372 | { |
373 | // | |
374 | // Copy function | |
375 | // | |
376 | ||
4487dad0 | 377 | ((AliTRDdigitizer &) d).fInputFile = 0; |
378 | ((AliTRDdigitizer &) d).fSDigitsManagerList = 0; | |
379 | ((AliTRDdigitizer &) d).fSDigitsManager = 0; | |
380 | ((AliTRDdigitizer &) d).fDigitsManager = 0; | |
381 | ((AliTRDdigitizer &) d).fTRD = 0; | |
382 | ((AliTRDdigitizer &) d).fGeo = 0; | |
e23fbb27 | 383 | ((AliTRDdigitizer &) d).fMasks = 0; |
abaf1f1d | 384 | ((AliTRDdigitizer &) d).fEvent = 0; |
4487dad0 | 385 | ((AliTRDdigitizer &) d).fPar = 0; |
abaf1f1d | 386 | ((AliTRDdigitizer &) d).fCompress = fCompress; |
e23fbb27 | 387 | ((AliTRDdigitizer &) d).fDebug = fDebug ; |
abaf1f1d | 388 | ((AliTRDdigitizer &) d).fSDigits = fSDigits; |
389 | ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale; | |
4487dad0 | 390 | ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly; |
e23fbb27 | 391 | |
392 | } | |
393 | ||
e23fbb27 | 394 | //_____________________________________________________________________________ |
395 | void AliTRDdigitizer::Exec(Option_t* option) | |
396 | { | |
397 | // | |
398 | // Executes the merging | |
399 | // | |
400 | ||
401 | Int_t iInput; | |
402 | ||
403 | AliTRDdigitsManager *sdigitsManager; | |
404 | ||
405 | TString optionString = option; | |
406 | if (optionString.Contains("deb")) { | |
407 | fDebug = 1; | |
408 | if (optionString.Contains("2")) { | |
409 | fDebug = 2; | |
410 | } | |
411 | printf("<AliTRDdigitizer::Exec> "); | |
412 | printf("Called with debug option %d\n",fDebug); | |
413 | } | |
414 | ||
cec4059b | 415 | // The AliRoot file is already connected by the manager |
4487dad0 | 416 | if (gAlice) { |
417 | if (fDebug > 0) { | |
418 | printf("<AliTRDdigitizer::Exec> "); | |
419 | printf("AliRun object found on file.\n"); | |
420 | } | |
421 | } | |
422 | else { | |
423 | printf("<AliTRDdigitizer::Exec> "); | |
424 | printf("Could not find AliRun object.\n"); | |
cec4059b | 425 | return; |
4487dad0 | 426 | } |
cec4059b | 427 | |
e23fbb27 | 428 | Int_t nInput = fManager->GetNinputs(); |
429 | fMasks = new Int_t[nInput]; | |
430 | for (iInput = 0; iInput < nInput; iInput++) { | |
431 | fMasks[iInput] = fManager->GetMask(iInput); | |
432 | } | |
e23fbb27 | 433 | |
434 | // Initialization | |
435 | InitDetector(); | |
436 | ||
437 | for (iInput = 0; iInput < nInput; iInput++) { | |
438 | ||
439 | if (fDebug > 0) { | |
440 | printf("<AliTRDdigitizer::Exec> "); | |
441 | printf("Add input stream %d\n",iInput); | |
442 | } | |
443 | ||
c57e2264 | 444 | // check if the input tree exists |
445 | if (!fManager->GetInputTreeTRDS(iInput)) { | |
446 | printf("<AliTRDdigitizer::Exec> "); | |
447 | printf("Input stream %d does not exist\n",iInput); | |
448 | return; | |
449 | } | |
450 | ||
e23fbb27 | 451 | // Read the s-digits via digits manager |
452 | sdigitsManager = new AliTRDdigitsManager(); | |
453 | sdigitsManager->SetDebug(fDebug); | |
454 | sdigitsManager->SetSDigits(kTRUE); | |
455 | sdigitsManager->ReadDigits(fManager->GetInputTreeTRDS(iInput)); | |
456 | ||
457 | // Add the s-digits to the input list | |
458 | AddSDigitsManager(sdigitsManager); | |
459 | ||
460 | } | |
461 | ||
462 | // Convert the s-digits to normal digits | |
463 | if (fDebug > 0) { | |
464 | printf("<AliTRDdigitizer::Exec> "); | |
465 | printf("Do the conversion\n"); | |
466 | } | |
467 | SDigits2Digits(); | |
468 | ||
469 | // Store the digits | |
470 | if (fDebug > 0) { | |
471 | printf("<AliTRDdigitizer::Exec> "); | |
472 | printf("Write the digits\n"); | |
473 | } | |
474 | fDigitsManager->MakeBranch(fManager->GetTreeDTRD()); | |
475 | fDigitsManager->WriteDigits(); | |
476 | if (fDebug > 0) { | |
477 | printf("<AliTRDdigitizer::Exec> "); | |
478 | printf("Done\n"); | |
479 | } | |
480 | ||
b1113c6b | 481 | DeleteSDigitsManager(); |
482 | ||
e23fbb27 | 483 | } |
484 | ||
f7336fa3 | 485 | //_____________________________________________________________________________ |
e23fbb27 | 486 | Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent) |
f7336fa3 | 487 | { |
488 | // | |
489 | // Opens a ROOT-file with TRD-hits and reads in the hit-tree | |
490 | // | |
491 | ||
492 | // Connect the AliRoot file containing Geometry, Kine, and Hits | |
4487dad0 | 493 | fInputFile = (TFile *) gROOT->GetListOfFiles()->FindObject(file); |
f7336fa3 | 494 | if (!fInputFile) { |
e23fbb27 | 495 | if (fDebug > 0) { |
496 | printf("<AliTRDdigitizer::Open> "); | |
497 | printf("Open the AliROOT-file %s.\n",file); | |
abaf1f1d | 498 | } |
e23fbb27 | 499 | fInputFile = new TFile(file,"UPDATE"); |
f7336fa3 | 500 | } |
501 | else { | |
e23fbb27 | 502 | if (fDebug > 0) { |
503 | printf("<AliTRDdigitizer::Open> "); | |
504 | printf("%s is already open.\n",file); | |
abaf1f1d | 505 | } |
f7336fa3 | 506 | } |
507 | ||
4487dad0 | 508 | gAlice = (AliRun *) fInputFile->Get("gAlice"); |
da581aea | 509 | if (gAlice) { |
e23fbb27 | 510 | if (fDebug > 0) { |
511 | printf("<AliTRDdigitizer::Open> "); | |
abaf1f1d | 512 | printf("AliRun object found on file.\n"); |
513 | } | |
da581aea | 514 | } |
515 | else { | |
e23fbb27 | 516 | printf("<AliTRDdigitizer::Open> "); |
da581aea | 517 | printf("Could not find AliRun object.\n"); |
518 | return kFALSE; | |
519 | } | |
f7336fa3 | 520 | |
521 | fEvent = nEvent; | |
522 | ||
523 | // Import the Trees for the event nEvent in the file | |
524 | Int_t nparticles = gAlice->GetEvent(fEvent); | |
525 | if (nparticles <= 0) { | |
e23fbb27 | 526 | printf("<AliTRDdigitizer::Open> "); |
f7336fa3 | 527 | printf("No entries in the trees for event %d.\n",fEvent); |
528 | return kFALSE; | |
529 | } | |
530 | ||
abaf1f1d | 531 | if (InitDetector()) { |
532 | return MakeBranch(); | |
533 | } | |
534 | else { | |
535 | return kFALSE; | |
536 | } | |
793ff80c | 537 | |
538 | } | |
539 | ||
540 | //_____________________________________________________________________________ | |
541 | Bool_t AliTRDdigitizer::InitDetector() | |
542 | { | |
543 | // | |
544 | // Sets the pointer to the TRD detector and the geometry | |
545 | // | |
546 | ||
dd9a6ee3 | 547 | // Get the pointer to the detector class and check for version 1 |
4487dad0 | 548 | fTRD = (AliTRD *) gAlice->GetDetector("TRD"); |
cec4059b | 549 | if (!fTRD) { |
550 | printf("<AliTRDdigitizer::InitDetector> "); | |
551 | printf("No TRD module found\n"); | |
552 | exit(1); | |
553 | } | |
dd9a6ee3 | 554 | if (fTRD->IsVersion() != 1) { |
e23fbb27 | 555 | printf("<AliTRDdigitizer::InitDetector> "); |
dd9a6ee3 | 556 | printf("TRD must be version 1 (slow simulator).\n"); |
557 | exit(1); | |
558 | } | |
559 | ||
560 | // Get the geometry | |
561 | fGeo = fTRD->GetGeometry(); | |
e23fbb27 | 562 | if (fDebug > 0) { |
563 | printf("<AliTRDdigitizer::InitDetector> "); | |
abaf1f1d | 564 | printf("Geometry version %d\n",fGeo->IsVersion()); |
565 | } | |
dd9a6ee3 | 566 | |
abaf1f1d | 567 | // Create a digits manager |
568 | fDigitsManager = new AliTRDdigitsManager(); | |
569 | fDigitsManager->SetSDigits(fSDigits); | |
570 | fDigitsManager->CreateArrays(); | |
571 | fDigitsManager->SetEvent(fEvent); | |
e23fbb27 | 572 | fDigitsManager->SetDebug(fDebug); |
abaf1f1d | 573 | |
574 | // The list for the input s-digits manager to be merged | |
575 | fSDigitsManagerList = new TList(); | |
576 | ||
4487dad0 | 577 | return kTRUE; |
f7336fa3 | 578 | |
579 | } | |
580 | ||
6244debe | 581 | //_____________________________________________________________________________ |
0a29d0f1 | 582 | Bool_t AliTRDdigitizer::MakeBranch(const Char_t *file) const |
6244debe | 583 | { |
abaf1f1d | 584 | // |
585 | // Create the branches for the digits array | |
6244debe | 586 | // |
587 | ||
abaf1f1d | 588 | return fDigitsManager->MakeBranch(file); |
6244debe | 589 | |
590 | } | |
591 | ||
f7336fa3 | 592 | //_____________________________________________________________________________ |
593 | Bool_t AliTRDdigitizer::MakeDigits() | |
594 | { | |
595 | // | |
872a7aba | 596 | // Creates digits. |
f7336fa3 | 597 | // |
598 | ||
f7336fa3 | 599 | /////////////////////////////////////////////////////////////// |
600 | // Parameter | |
601 | /////////////////////////////////////////////////////////////// | |
602 | ||
603 | // Converts number of electrons to fC | |
872a7aba | 604 | const Double_t kEl2fC = 1.602E-19 * 1.0E15; |
f7336fa3 | 605 | |
606 | /////////////////////////////////////////////////////////////// | |
607 | ||
793ff80c | 608 | // Number of pads included in the pad response |
609 | const Int_t kNpad = 3; | |
610 | ||
611 | // Number of track dictionary arrays | |
dd56b762 | 612 | const Int_t kNDict = AliTRDdigitsManager::kNDict; |
793ff80c | 613 | |
872a7aba | 614 | // Half the width of the amplification region |
615 | const Float_t kAmWidth = AliTRDgeometry::AmThick() / 2.; | |
616 | ||
c3a4830f | 617 | Int_t iRow, iCol, iTime, iPad; |
71d9fa7b | 618 | Int_t iDict = 0; |
793ff80c | 619 | Int_t nBytes = 0; |
f7336fa3 | 620 | |
621 | Int_t totalSizeDigits = 0; | |
622 | Int_t totalSizeDict0 = 0; | |
623 | Int_t totalSizeDict1 = 0; | |
624 | Int_t totalSizeDict2 = 0; | |
625 | ||
872a7aba | 626 | Int_t timeTRDbeg = 0; |
627 | Int_t timeTRDend = 1; | |
628 | ||
629 | Float_t pos[3]; | |
630 | Float_t rot[3]; | |
631 | Float_t xyz[3]; | |
632 | Float_t padSignal[kNpad]; | |
633 | Float_t signalOld[kNpad]; | |
634 | ||
793ff80c | 635 | AliTRDdataArrayF *signals = 0; |
636 | AliTRDdataArrayI *digits = 0; | |
8230f242 | 637 | AliTRDdataArrayI *dictionary[kNDict]; |
da581aea | 638 | |
4487dad0 | 639 | // Create a default parameter class if none is defined |
640 | if (!fPar) { | |
641 | fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter"); | |
642 | if (fDebug > 0) { | |
643 | printf("<AliTRDdigitizer::MakeDigits> "); | |
644 | printf("Create the default parameter object\n"); | |
645 | } | |
646 | } | |
647 | ||
793ff80c | 648 | // Create a container for the amplitudes |
649 | AliTRDsegmentArray *signalsArray | |
e23fbb27 | 650 | = new AliTRDsegmentArray("AliTRDdataArrayF" |
651 | ,AliTRDgeometry::Ndet()); | |
793ff80c | 652 | |
4487dad0 | 653 | if (fPar->TRFOn()) { |
654 | timeTRDbeg = ((Int_t) (-fPar->GetTRFlo() / fPar->GetTimeBinSize())) - 1; | |
655 | timeTRDend = ((Int_t) ( fPar->GetTRFhi() / fPar->GetTimeBinSize())) - 1; | |
e23fbb27 | 656 | if (fDebug > 0) { |
657 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 658 | printf("Sample the TRF between -%d and %d\n",timeTRDbeg,timeTRDend); |
659 | } | |
da581aea | 660 | } |
661 | ||
4487dad0 | 662 | Float_t elAttachProp = fPar->GetElAttachProp() / 100.; |
793ff80c | 663 | |
872a7aba | 664 | if (!fGeo) { |
e23fbb27 | 665 | printf("<AliTRDdigitizer::MakeDigits> "); |
872a7aba | 666 | printf("No geometry defined\n"); |
667 | return kFALSE; | |
668 | } | |
669 | ||
e23fbb27 | 670 | if (fDebug > 0) { |
671 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 672 | printf("Start creating digits.\n"); |
673 | } | |
872a7aba | 674 | |
793ff80c | 675 | // Get the pointer to the hit tree |
0a29d0f1 | 676 | TTree *hitTree = gAlice->TreeH(); |
793ff80c | 677 | |
678 | // Get the number of entries in the hit tree | |
679 | // (Number of primary particles creating a hit somewhere) | |
0a29d0f1 | 680 | Int_t nTrack = (Int_t) hitTree->GetEntries(); |
e23fbb27 | 681 | if (fDebug > 0) { |
682 | printf("<AliTRDdigitizer::MakeDigits> "); | |
793ff80c | 683 | printf("Found %d primary particles\n",nTrack); |
684 | } | |
685 | ||
686 | Int_t detectorOld = -1; | |
687 | Int_t countHits = 0; | |
688 | ||
689 | // Loop through all entries in the tree | |
690 | for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) { | |
691 | ||
692 | gAlice->ResetHits(); | |
0a29d0f1 | 693 | nBytes += hitTree->GetEvent(iTrack); |
793ff80c | 694 | |
e23fbb27 | 695 | // Loop through the TRD hits |
696 | Int_t iHit = 0; | |
697 | AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1); | |
698 | while (hit) { | |
699 | ||
793ff80c | 700 | countHits++; |
e23fbb27 | 701 | iHit++; |
702 | ||
703 | pos[0] = hit->X(); | |
704 | pos[1] = hit->Y(); | |
705 | pos[2] = hit->Z(); | |
706 | Float_t q = hit->GetCharge(); | |
707 | Int_t track = hit->Track(); | |
708 | Int_t detector = hit->GetDetector(); | |
709 | Int_t plane = fGeo->GetPlane(detector); | |
710 | Int_t sector = fGeo->GetSector(detector); | |
711 | Int_t chamber = fGeo->GetChamber(detector); | |
4487dad0 | 712 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
713 | Int_t nColMax = fPar->GetColMax(plane); | |
714 | Int_t nTimeMax = fPar->GetTimeMax(); | |
715 | Int_t nTimeBefore = fPar->GetTimeBefore(); | |
716 | Int_t nTimeAfter = fPar->GetTimeAfter(); | |
717 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
718 | Float_t row0 = fPar->GetRow0(plane,chamber,sector); | |
719 | Float_t col0 = fPar->GetCol0(plane); | |
720 | Float_t time0 = fPar->GetTime0(plane); | |
721 | Float_t rowPadSize = fPar->GetRowPadSize(plane,chamber,sector); | |
722 | Float_t colPadSize = fPar->GetColPadSize(plane); | |
723 | Float_t timeBinSize = fPar->GetTimeBinSize(); | |
872a7aba | 724 | Float_t divideRow = 1.0 / rowPadSize; |
725 | Float_t divideCol = 1.0 / colPadSize; | |
726 | Float_t divideTime = 1.0 / timeBinSize; | |
793ff80c | 727 | |
e23fbb27 | 728 | if (fDebug > 1) { |
793ff80c | 729 | printf("Analyze hit no. %d ",iHit); |
730 | printf("-----------------------------------------------------------\n"); | |
731 | hit->Dump(); | |
732 | printf("plane = %d, sector = %d, chamber = %d\n" | |
733 | ,plane,sector,chamber); | |
734 | printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n" | |
735 | ,nRowMax,nColMax,nTimeMax); | |
872a7aba | 736 | printf("nTimeBefore = %d, nTimeAfter = %d, nTimeTotal = %d\n" |
737 | ,nTimeBefore,nTimeAfter,nTimeTotal); | |
793ff80c | 738 | printf("row0 = %f, col0 = %f, time0 = %f\n" |
739 | ,row0,col0,time0); | |
c1e4b257 | 740 | printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n" |
741 | ,rowPadSize,colPadSize,timeBinSize); | |
793ff80c | 742 | } |
743 | ||
e23fbb27 | 744 | // Don't analyze test hits and switched off detectors |
745 | if ((CheckDetector(plane,chamber,sector)) && | |
746 | (((Int_t) q) != 0)) { | |
dd56b762 | 747 | |
e23fbb27 | 748 | if (detector != detectorOld) { |
e153aaf6 | 749 | |
e23fbb27 | 750 | if (fDebug > 1) { |
751 | printf("<AliTRDdigitizer::MakeDigits> "); | |
752 | printf("Get new container. New det = %d, Old det = %d\n" | |
753 | ,detector,detectorOld); | |
dd9a6ee3 | 754 | } |
e23fbb27 | 755 | // Compress the old one if enabled |
756 | if ((fCompress) && (detectorOld > -1)) { | |
757 | if (fDebug > 1) { | |
758 | printf("<AliTRDdigitizer::MakeDigits> "); | |
759 | printf("Compress the old container ..."); | |
760 | } | |
761 | signals->Compress(1,0); | |
762 | for (iDict = 0; iDict < kNDict; iDict++) { | |
763 | dictionary[iDict]->Compress(1,0); | |
c1e4b257 | 764 | } |
e23fbb27 | 765 | if (fDebug > 1) printf("done\n"); |
793ff80c | 766 | } |
e23fbb27 | 767 | // Get the new container |
768 | signals = (AliTRDdataArrayF *) signalsArray->At(detector); | |
769 | if (signals->GetNtime() == 0) { | |
770 | // Allocate a new one if not yet existing | |
771 | if (fDebug > 1) { | |
772 | printf("<AliTRDdigitizer::MakeDigits> "); | |
773 | printf("Allocate a new container ... "); | |
774 | } | |
775 | signals->Allocate(nRowMax,nColMax,nTimeTotal); | |
793ff80c | 776 | } |
777 | else { | |
e23fbb27 | 778 | // Expand an existing one |
779 | if (fCompress) { | |
780 | if (fDebug > 1) { | |
781 | printf("<AliTRDdigitizer::MakeDigits> "); | |
782 | printf("Expand an existing container ... "); | |
783 | } | |
784 | signals->Expand(); | |
785 | } | |
793ff80c | 786 | } |
e23fbb27 | 787 | // The same for the dictionary |
788 | for (iDict = 0; iDict < kNDict; iDict++) { | |
789 | dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict); | |
790 | if (dictionary[iDict]->GetNtime() == 0) { | |
791 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
792 | } | |
793 | else { | |
794 | if (fCompress) dictionary[iDict]->Expand(); | |
795 | } | |
796 | } | |
797 | if (fDebug > 1) printf("done\n"); | |
798 | detectorOld = detector; | |
793ff80c | 799 | } |
800 | ||
e23fbb27 | 801 | // Rotate the sectors on top of each other |
802 | fGeo->Rotate(detector,pos,rot); | |
803 | ||
804 | // The driftlength. It is negative if the hit is in the | |
805 | // amplification region. | |
806 | Float_t driftlength = time0 - rot[0]; | |
807 | ||
808 | // Take also the drift in the amplification region into account | |
809 | // The drift length is at the moment still the same, regardless of | |
810 | // the position relativ to the wire. This non-isochronity needs still | |
811 | // to be implemented. | |
812 | Float_t driftlengthL = TMath::Abs(driftlength + kAmWidth); | |
4487dad0 | 813 | if (fPar->ExBOn()) driftlengthL /= TMath::Sqrt(fPar->GetLorentzFactor()); |
e23fbb27 | 814 | |
815 | // Loop over all electrons of this hit | |
816 | // TR photons produce hits with negative charge | |
817 | Int_t nEl = ((Int_t) TMath::Abs(q)); | |
818 | for (Int_t iEl = 0; iEl < nEl; iEl++) { | |
819 | ||
820 | xyz[0] = rot[0]; | |
821 | xyz[1] = rot[1]; | |
822 | xyz[2] = rot[2]; | |
823 | ||
824 | // Electron attachment | |
4487dad0 | 825 | if (fPar->ElAttachOn()) { |
e23fbb27 | 826 | if (gRandom->Rndm() < (driftlengthL * elAttachProp)) |
827 | continue; | |
828 | } | |
829 | ||
830 | // Apply the diffusion smearing | |
4487dad0 | 831 | if (fPar->DiffusionOn()) { |
832 | if (!(fPar->Diffusion(driftlengthL,xyz))) continue; | |
e23fbb27 | 833 | } |
f7336fa3 | 834 | |
e23fbb27 | 835 | // Apply E x B effects (depends on drift direction) |
4487dad0 | 836 | if (fPar->ExBOn()) { |
837 | if (!(fPar->ExB(driftlength+kAmWidth,xyz))) continue; | |
e23fbb27 | 838 | } |
793ff80c | 839 | |
e23fbb27 | 840 | // The electron position after diffusion and ExB in pad coordinates |
841 | // The pad row (z-direction) | |
842 | Float_t rowDist = xyz[2] - row0; | |
843 | Int_t rowE = ((Int_t) (rowDist * divideRow)); | |
844 | if ((rowE < 0) || (rowE >= nRowMax)) continue; | |
845 | Float_t rowOffset = ((((Float_t) rowE) + 0.5) * rowPadSize) - rowDist; | |
846 | ||
847 | // The pad column (rphi-direction) | |
4487dad0 | 848 | Float_t col0tilt = fPar->Col0Tilted(col0,rowOffset,plane); |
e23fbb27 | 849 | Float_t colDist = xyz[1] - col0tilt; |
850 | Int_t colE = ((Int_t) (colDist * divideCol)); | |
851 | if ((colE < 0) || (colE >= nColMax)) continue; | |
852 | Float_t colOffset = ((((Float_t) colE) + 0.5) * colPadSize) - colDist; | |
853 | ||
854 | // The time bin (negative for hits in the amplification region) | |
855 | // In the amplification region the electrons drift from both sides | |
856 | // to the middle (anode wire plane) | |
857 | Float_t timeDist = time0 - xyz[0]; | |
858 | Float_t timeOffset = 0; | |
859 | Int_t timeE = 0; | |
860 | if (timeDist > 0) { | |
861 | // The time bin | |
862 | timeE = ((Int_t) (timeDist * divideTime)); | |
863 | // The distance of the position to the middle of the timebin | |
864 | timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) - timeDist; | |
865 | } | |
866 | else { | |
867 | // Difference between half of the amplification gap width and | |
868 | // the distance to the anode wire | |
869 | Float_t anodeDist = kAmWidth - TMath::Abs(timeDist + kAmWidth); | |
870 | // The time bin | |
871 | timeE = -1 * (((Int_t ) (anodeDist * divideTime)) + 1); | |
872 | // The distance of the position to the middle of the timebin | |
873 | timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) + anodeDist; | |
874 | } | |
872a7aba | 875 | |
e23fbb27 | 876 | // Apply the gas gain including fluctuations |
877 | Float_t ggRndm = 0.0; | |
878 | do { | |
879 | ggRndm = gRandom->Rndm(); | |
880 | } while (ggRndm <= 0); | |
4487dad0 | 881 | Int_t signal = (Int_t) (-fPar->GetGasGain() * TMath::Log(ggRndm)); |
e23fbb27 | 882 | |
883 | // Apply the pad response | |
4487dad0 | 884 | if (fPar->PRFOn()) { |
e23fbb27 | 885 | // The distance of the electron to the center of the pad |
886 | // in units of pad width | |
887 | Float_t dist = - colOffset * divideCol; | |
4487dad0 | 888 | if (!(fPar->PadResponse(signal,dist,plane,padSignal))) continue; |
793ff80c | 889 | } |
e23fbb27 | 890 | else { |
891 | padSignal[0] = 0.0; | |
892 | padSignal[1] = signal; | |
893 | padSignal[2] = 0.0; | |
894 | } | |
895 | ||
896 | // Sample the time response inside the drift region | |
897 | // + additional time bins before and after. | |
898 | // The sampling is done always in the middle of the time bin | |
899 | for (Int_t iTimeBin = TMath::Max(timeE-timeTRDbeg, -nTimeBefore) | |
900 | ;iTimeBin < TMath::Min(timeE+timeTRDend,nTimeMax+nTimeAfter ) | |
901 | ;iTimeBin++) { | |
902 | ||
903 | // Apply the time response | |
904 | Float_t timeResponse = 1.0; | |
905 | Float_t crossTalk = 0.0; | |
906 | Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset; | |
4487dad0 | 907 | if (fPar->TRFOn()) { |
908 | timeResponse = fPar->TimeResponse(time); | |
e23fbb27 | 909 | } |
4487dad0 | 910 | if (fPar->CTOn()) { |
911 | crossTalk = fPar->CrossTalk(time); | |
e23fbb27 | 912 | } |
913 | ||
914 | signalOld[0] = 0.0; | |
915 | signalOld[1] = 0.0; | |
916 | signalOld[2] = 0.0; | |
f7336fa3 | 917 | |
e23fbb27 | 918 | for (iPad = 0; iPad < kNpad; iPad++) { |
919 | ||
920 | Int_t colPos = colE + iPad - 1; | |
921 | if (colPos < 0) continue; | |
922 | if (colPos >= nColMax) break; | |
923 | ||
924 | // Add the signals | |
925 | // Note: The time bin number is shifted by nTimeBefore to avoid negative | |
926 | // time bins. This has to be subtracted later. | |
927 | Int_t iCurrentTimeBin = iTimeBin + nTimeBefore; | |
928 | signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin); | |
929 | if( colPos != colE ) { | |
930 | signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk); | |
931 | } | |
932 | else { | |
933 | signalOld[iPad] += padSignal[iPad] * timeResponse; | |
934 | } | |
935 | signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]); | |
936 | ||
937 | // Store the track index in the dictionary | |
938 | // Note: We store index+1 in order to allow the array to be compressed | |
939 | if (signalOld[iPad] > 0) { | |
940 | for (iDict = 0; iDict < kNDict; iDict++) { | |
941 | Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE | |
942 | ,colPos | |
943 | ,iCurrentTimeBin); | |
944 | if (oldTrack == track+1) break; | |
945 | if (oldTrack == 0) { | |
946 | dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1); | |
947 | break; | |
948 | } | |
71d9fa7b | 949 | } |
950 | } | |
872a7aba | 951 | |
e23fbb27 | 952 | } // Loop: pads |
f7336fa3 | 953 | |
e23fbb27 | 954 | } // Loop: time bins |
f7336fa3 | 955 | |
e23fbb27 | 956 | } // Loop: electrons of a single hit |
f7336fa3 | 957 | |
e23fbb27 | 958 | } // If: detector and test hit |
f7336fa3 | 959 | |
e23fbb27 | 960 | hit = (AliTRDhit *) fTRD->NextHit(); |
f7336fa3 | 961 | |
e23fbb27 | 962 | } // Loop: hits of one primary track |
963 | ||
964 | } // Loop: primary tracks | |
965 | ||
966 | if (fDebug > 0) { | |
967 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 968 | printf("Finished analyzing %d hits\n",countHits); |
969 | } | |
793ff80c | 970 | |
6244debe | 971 | // The total conversion factor |
4487dad0 | 972 | Float_t convert = kEl2fC * fPar->GetPadCoupling() |
973 | * fPar->GetTimeCoupling() | |
974 | * fPar->GetChipGain(); | |
6244debe | 975 | |
793ff80c | 976 | // Loop through all chambers to finalize the digits |
977 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
978 | ||
872a7aba | 979 | Int_t plane = fGeo->GetPlane(iDet); |
980 | Int_t sector = fGeo->GetSector(iDet); | |
981 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 982 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
983 | Int_t nColMax = fPar->GetColMax(plane); | |
984 | Int_t nTimeMax = fPar->GetTimeMax(); | |
985 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
793ff80c | 986 | |
e23fbb27 | 987 | Double_t *inADC = new Double_t[nTimeTotal]; |
988 | Double_t *outADC = new Double_t[nTimeTotal]; | |
989 | ||
990 | if (fDebug > 0) { | |
991 | printf("<AliTRDdigitizer::MakeDigits> "); | |
793ff80c | 992 | printf("Digitization for chamber %d\n",iDet); |
993 | } | |
da581aea | 994 | |
793ff80c | 995 | // Add a container for the digits of this detector |
abaf1f1d | 996 | digits = fDigitsManager->GetDigits(iDet); |
793ff80c | 997 | // Allocate memory space for the digits buffer |
872a7aba | 998 | digits->Allocate(nRowMax,nColMax,nTimeTotal); |
da581aea | 999 | |
793ff80c | 1000 | // Get the signal container |
1001 | signals = (AliTRDdataArrayF *) signalsArray->At(iDet); | |
1002 | if (signals->GetNtime() == 0) { | |
1003 | // Create missing containers | |
872a7aba | 1004 | signals->Allocate(nRowMax,nColMax,nTimeTotal); |
793ff80c | 1005 | } |
1006 | else { | |
1007 | // Expand the container if neccessary | |
1008 | if (fCompress) signals->Expand(); | |
1009 | } | |
1010 | // Create the missing dictionary containers | |
1011 | for (iDict = 0; iDict < kNDict; iDict++) { | |
abaf1f1d | 1012 | dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict); |
793ff80c | 1013 | if (dictionary[iDict]->GetNtime() == 0) { |
872a7aba | 1014 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); |
793ff80c | 1015 | } |
1016 | } | |
f7336fa3 | 1017 | |
793ff80c | 1018 | Int_t nDigits = 0; |
1019 | ||
6244debe | 1020 | // Don't create noise in detectors that are switched off |
1021 | if (CheckDetector(plane,chamber,sector)) { | |
1022 | ||
1023 | // Create the digits for this chamber | |
872a7aba | 1024 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
1025 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
6244debe | 1026 | |
e23fbb27 | 1027 | // Create summable digits |
1028 | if (fSDigits) { | |
6244debe | 1029 | |
e23fbb27 | 1030 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
872a7aba | 1031 | Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime); |
abaf1f1d | 1032 | signalAmp *= fSDigitsScale; |
e23fbb27 | 1033 | signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9); |
abaf1f1d | 1034 | Int_t adc = (Int_t) signalAmp; |
4487dad0 | 1035 | if (adc > 0) nDigits++; |
872a7aba | 1036 | digits->SetDataUnchecked(iRow,iCol,iTime,adc); |
c1e4b257 | 1037 | } |
6244debe | 1038 | |
e23fbb27 | 1039 | } |
1040 | // Create normal digits | |
1041 | else { | |
6244debe | 1042 | |
e23fbb27 | 1043 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
1044 | Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime); | |
6244debe | 1045 | // Add the noise |
4487dad0 | 1046 | signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fPar->GetNoise()),0.0); |
6244debe | 1047 | // Convert to mV |
1048 | signalAmp *= convert; | |
1049 | // Convert to ADC counts. Set the overflow-bit fADCoutRange if the | |
1050 | // signal is larger than fADCinRange | |
1051 | Int_t adc = 0; | |
4487dad0 | 1052 | if (signalAmp >= fPar->GetADCinRange()) { |
1053 | adc = ((Int_t) fPar->GetADCoutRange()); | |
6244debe | 1054 | } |
1055 | else { | |
4487dad0 | 1056 | adc = ((Int_t) (signalAmp * (fPar->GetADCoutRange() |
1057 | / fPar->GetADCinRange()))); | |
6244debe | 1058 | } |
e23fbb27 | 1059 | inADC[iTime] = adc; |
1060 | outADC[iTime] = adc; | |
1061 | } | |
6244debe | 1062 | |
e23fbb27 | 1063 | // Apply the tail cancelation via the digital filter |
4487dad0 | 1064 | if (fPar->TCOn()) { |
1065 | DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp()); | |
e23fbb27 | 1066 | } |
1067 | ||
1068 | for (iTime = 0; iTime < nTimeTotal; iTime++) { | |
6244debe | 1069 | // Store the amplitude of the digit if above threshold |
4487dad0 | 1070 | if (outADC[iTime] > fPar->GetADCthreshold()) { |
e23fbb27 | 1071 | if (fDebug > 2) { |
1072 | printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n" | |
1073 | ,iRow,iCol,iTime,outADC[iTime]); | |
6244debe | 1074 | } |
1075 | nDigits++; | |
e23fbb27 | 1076 | digits->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); |
6244debe | 1077 | } |
6244debe | 1078 | } |
1079 | ||
1080 | } | |
e23fbb27 | 1081 | |
6244debe | 1082 | } |
793ff80c | 1083 | } |
6244debe | 1084 | |
793ff80c | 1085 | } |
1086 | ||
1087 | // Compress the arrays | |
1088 | digits->Compress(1,0); | |
1089 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1090 | dictionary[iDict]->Compress(1,0); | |
1091 | } | |
f7336fa3 | 1092 | |
793ff80c | 1093 | totalSizeDigits += digits->GetSize(); |
1094 | totalSizeDict0 += dictionary[0]->GetSize(); | |
1095 | totalSizeDict1 += dictionary[1]->GetSize(); | |
1096 | totalSizeDict2 += dictionary[2]->GetSize(); | |
f7336fa3 | 1097 | |
c1e4b257 | 1098 | Float_t nPixel = nRowMax * nColMax * nTimeMax; |
e23fbb27 | 1099 | if (fDebug > 0) { |
1100 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 1101 | printf("Found %d digits in detector %d (%3.0f).\n" |
1102 | ,nDigits,iDet | |
1103 | ,100.0 * ((Float_t) nDigits) / nPixel); | |
1104 | } | |
1105 | ||
793ff80c | 1106 | if (fCompress) signals->Compress(1,0); |
f7336fa3 | 1107 | |
e23fbb27 | 1108 | delete [] inADC; |
1109 | delete [] outADC; | |
1110 | ||
f7336fa3 | 1111 | } |
1112 | ||
e23fbb27 | 1113 | if (fDebug > 0) { |
1114 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 1115 | printf("Total number of analyzed hits = %d\n",countHits); |
e23fbb27 | 1116 | printf("<AliTRDdigitizer::MakeDigits> "); |
abaf1f1d | 1117 | printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits |
1118 | ,totalSizeDict0 | |
1119 | ,totalSizeDict1 | |
1120 | ,totalSizeDict2); | |
1121 | } | |
1122 | ||
1123 | return kTRUE; | |
1124 | ||
1125 | } | |
1126 | ||
1127 | //_____________________________________________________________________________ | |
1128 | void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man) | |
1129 | { | |
1130 | // | |
1131 | // Add a digits manager for s-digits to the input list. | |
1132 | // | |
1133 | ||
1134 | fSDigitsManagerList->Add(man); | |
1135 | ||
1136 | } | |
1137 | ||
b1113c6b | 1138 | //_____________________________________________________________________________ |
1139 | void AliTRDdigitizer::DeleteSDigitsManager() | |
1140 | { | |
1141 | // | |
1142 | // Removes digits manager from the input list. | |
1143 | // | |
1144 | ||
1145 | fSDigitsManagerList->Delete(); | |
1146 | ||
1147 | } | |
1148 | ||
abaf1f1d | 1149 | //_____________________________________________________________________________ |
1150 | Bool_t AliTRDdigitizer::ConvertSDigits() | |
1151 | { | |
1152 | // | |
1153 | // Converts s-digits to normal digits | |
1154 | // | |
1155 | ||
1156 | // Number of track dictionary arrays | |
1157 | const Int_t kNDict = AliTRDdigitsManager::kNDict; | |
1158 | ||
1159 | // Converts number of electrons to fC | |
1160 | const Double_t kEl2fC = 1.602E-19 * 1.0E15; | |
1161 | ||
1162 | Int_t iDict = 0; | |
e23fbb27 | 1163 | Int_t iRow; |
1164 | Int_t iCol; | |
1165 | Int_t iTime; | |
abaf1f1d | 1166 | |
4487dad0 | 1167 | if (!fPar) { |
1168 | fPar = new AliTRDparameter("TRDparameter","Standard parameter"); | |
1169 | if (fDebug > 0) { | |
1170 | printf("<AliTRDdigitizer::ConvertSDigits> "); | |
1171 | printf("Create the default parameter object\n"); | |
1172 | } | |
abaf1f1d | 1173 | } |
1174 | ||
1175 | Double_t sDigitsScale = 1.0 / GetSDigitsScale(); | |
4487dad0 | 1176 | Double_t noise = fPar->GetNoise(); |
1177 | Double_t padCoupling = fPar->GetPadCoupling(); | |
1178 | Double_t timeCoupling = fPar->GetTimeCoupling(); | |
1179 | Double_t chipGain = fPar->GetChipGain(); | |
abaf1f1d | 1180 | Double_t convert = kEl2fC * padCoupling * timeCoupling * chipGain;; |
4487dad0 | 1181 | Double_t adcInRange = fPar->GetADCinRange(); |
1182 | Double_t adcOutRange = fPar->GetADCoutRange(); | |
1183 | Int_t adcThreshold = fPar->GetADCthreshold(); | |
abaf1f1d | 1184 | |
1185 | AliTRDdataArrayI *digitsIn; | |
1186 | AliTRDdataArrayI *digitsOut; | |
1187 | AliTRDdataArrayI *dictionaryIn[kNDict]; | |
1188 | AliTRDdataArrayI *dictionaryOut[kNDict]; | |
1189 | ||
1190 | // Loop through the detectors | |
1191 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
da581aea | 1192 | |
e23fbb27 | 1193 | if (fDebug > 0) { |
1194 | printf("<AliTRDdigitizer::ConvertSDigits> "); | |
abaf1f1d | 1195 | printf("Convert detector %d to digits.\n",iDet); |
1196 | } | |
1197 | ||
1198 | Int_t plane = fGeo->GetPlane(iDet); | |
1199 | Int_t sector = fGeo->GetSector(iDet); | |
1200 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 1201 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
1202 | Int_t nColMax = fPar->GetColMax(plane); | |
1203 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
abaf1f1d | 1204 | |
e23fbb27 | 1205 | Double_t *inADC = new Double_t[nTimeTotal]; |
1206 | Double_t *outADC = new Double_t[nTimeTotal]; | |
1207 | ||
abaf1f1d | 1208 | digitsIn = fSDigitsManager->GetDigits(iDet); |
1209 | digitsIn->Expand(); | |
1210 | digitsOut = fDigitsManager->GetDigits(iDet); | |
1211 | digitsOut->Allocate(nRowMax,nColMax,nTimeTotal); | |
1212 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1213 | dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict); | |
1214 | dictionaryIn[iDict]->Expand(); | |
1215 | dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict); | |
1216 | dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
1217 | } | |
1218 | ||
e23fbb27 | 1219 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
1220 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
abaf1f1d | 1221 | |
e23fbb27 | 1222 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
abaf1f1d | 1223 | Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
1224 | signal *= sDigitsScale; | |
1225 | // Add the noise | |
1226 | signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),0.0); | |
1227 | // Convert to mV | |
1228 | signal *= convert; | |
1229 | // Convert to ADC counts. Set the overflow-bit adcOutRange if the | |
1230 | // signal is larger than adcInRange | |
1231 | Int_t adc = 0; | |
1232 | if (signal >= adcInRange) { | |
1233 | adc = ((Int_t) adcOutRange); | |
1234 | } | |
1235 | else { | |
1236 | adc = ((Int_t) (signal * (adcOutRange / adcInRange))); | |
1237 | } | |
e23fbb27 | 1238 | inADC[iTime] = adc; |
1239 | outADC[iTime] = adc; | |
1240 | } | |
1241 | ||
1242 | // Apply the tail cancelation via the digital filter | |
4487dad0 | 1243 | if (fPar->TCOn()) { |
1244 | DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp()); | |
e23fbb27 | 1245 | } |
1246 | ||
1247 | for (iTime = 0; iTime < nTimeTotal; iTime++) { | |
abaf1f1d | 1248 | // Store the amplitude of the digit if above threshold |
e23fbb27 | 1249 | if (outADC[iTime] > adcThreshold) { |
1250 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); | |
1251 | // Copy the dictionary | |
1252 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1253 | Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1254 | dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track); | |
1255 | } | |
abaf1f1d | 1256 | } |
abaf1f1d | 1257 | } |
e23fbb27 | 1258 | |
abaf1f1d | 1259 | } |
1260 | } | |
1261 | ||
1262 | if (fCompress) { | |
1263 | digitsIn->Compress(1,0); | |
1264 | digitsOut->Compress(1,0); | |
1265 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1266 | dictionaryIn[iDict]->Compress(1,0); | |
1267 | dictionaryOut[iDict]->Compress(1,0); | |
1268 | } | |
1269 | } | |
1270 | ||
e23fbb27 | 1271 | delete [] inADC; |
1272 | delete [] outADC; | |
1273 | ||
abaf1f1d | 1274 | } |
f7336fa3 | 1275 | |
1276 | return kTRUE; | |
1277 | ||
1278 | } | |
1279 | ||
16bf9884 | 1280 | //_____________________________________________________________________________ |
abaf1f1d | 1281 | Bool_t AliTRDdigitizer::MergeSDigits() |
16bf9884 | 1282 | { |
1283 | // | |
abaf1f1d | 1284 | // Merges the input s-digits: |
1285 | // - The amplitude of the different inputs are summed up. | |
1286 | // - Of the track IDs from the input dictionaries only one is | |
1287 | // kept for each input. This works for maximal 3 different merged inputs. | |
16bf9884 | 1288 | // |
1289 | ||
abaf1f1d | 1290 | // Number of track dictionary arrays |
1291 | const Int_t kNDict = AliTRDdigitsManager::kNDict; | |
1292 | ||
4487dad0 | 1293 | if (!fPar) { |
1294 | fPar = new AliTRDparameter("TRDparameter","Standard parameter"); | |
1295 | if (fDebug > 0) { | |
1296 | printf("<AliTRDdigitizer::MergeSDigits> "); | |
1297 | printf("Create the default parameter object\n"); | |
1298 | } | |
1299 | } | |
1300 | ||
abaf1f1d | 1301 | Int_t iDict = 0; |
e23fbb27 | 1302 | Int_t jDict = 0; |
abaf1f1d | 1303 | |
1304 | AliTRDdataArrayI *digitsA; | |
1305 | AliTRDdataArrayI *digitsB; | |
1306 | AliTRDdataArrayI *dictionaryA[kNDict]; | |
1307 | AliTRDdataArrayI *dictionaryB[kNDict]; | |
1308 | ||
1309 | // Get the first s-digits | |
1310 | fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First(); | |
1311 | if (!fSDigitsManager) return kFALSE; | |
1312 | ||
1313 | // Loop through the other sets of s-digits | |
1314 | AliTRDdigitsManager *mergeSDigitsManager; | |
1315 | mergeSDigitsManager = (AliTRDdigitsManager *) | |
1316 | fSDigitsManagerList->After(fSDigitsManager); | |
1317 | ||
e23fbb27 | 1318 | if (fDebug > 0) { |
abaf1f1d | 1319 | if (mergeSDigitsManager) { |
e23fbb27 | 1320 | printf("<AliTRDdigitizer::MergeSDigits> "); |
1321 | printf("Merge %d input files.\n",fSDigitsManagerList->GetSize()); | |
abaf1f1d | 1322 | } |
1323 | else { | |
e23fbb27 | 1324 | printf("<AliTRDdigitizer::MergeSDigits> "); |
abaf1f1d | 1325 | printf("Only one input file.\n"); |
1326 | } | |
1327 | } | |
1328 | ||
1329 | Int_t iMerge = 0; | |
1330 | while (mergeSDigitsManager) { | |
1331 | ||
1332 | iMerge++; | |
1333 | ||
1334 | // Loop through the detectors | |
1335 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
1336 | ||
1337 | Int_t plane = fGeo->GetPlane(iDet); | |
1338 | Int_t sector = fGeo->GetSector(iDet); | |
1339 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 1340 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
1341 | Int_t nColMax = fPar->GetColMax(plane); | |
1342 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
abaf1f1d | 1343 | |
1344 | // Loop through the pixels of one detector and add the signals | |
1345 | digitsA = fSDigitsManager->GetDigits(iDet); | |
1346 | digitsB = mergeSDigitsManager->GetDigits(iDet); | |
1347 | digitsA->Expand(); | |
1348 | digitsB->Expand(); | |
1349 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1350 | dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict); | |
1351 | dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict); | |
1352 | dictionaryA[iDict]->Expand(); | |
1353 | dictionaryB[iDict]->Expand(); | |
1354 | } | |
1355 | ||
4487dad0 | 1356 | // Merge only detectors that contain a signal |
1357 | Bool_t doMerge = kTRUE; | |
1358 | if (fMergeSignalOnly) { | |
1359 | if (digitsA->GetOverThreshold(0) == 0) { | |
1360 | doMerge = kFALSE; | |
1361 | } | |
abaf1f1d | 1362 | } |
1363 | ||
4487dad0 | 1364 | if (doMerge) { |
abaf1f1d | 1365 | |
4487dad0 | 1366 | if (fDebug > 0) { |
1367 | printf("<AliTRDdigitizer::MergeSDigits> "); | |
1368 | printf("Merge detector %d of input no.%d\n",iDet,iMerge+1); | |
1369 | } | |
abaf1f1d | 1370 | |
4487dad0 | 1371 | for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) { |
1372 | for (Int_t iCol = 0; iCol < nColMax; iCol++ ) { | |
1373 | for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) { | |
1374 | ||
1375 | // Add the amplitudes of the summable digits | |
1376 | Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime); | |
1377 | Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime); | |
1378 | ampA += ampB; | |
1379 | digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA); | |
1380 | ||
1381 | // Add the mask to the track id if defined. | |
1382 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1383 | Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1384 | if ((fMasks) && (trackB > 0)) { | |
1385 | for (jDict = 0; jDict < kNDict; jDict++) { | |
1386 | Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1387 | if (trackA == 0) { | |
1388 | trackA = trackB + fMasks[iMerge]; | |
1389 | dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA); | |
1390 | } | |
1391 | } | |
1392 | } | |
e23fbb27 | 1393 | } |
abaf1f1d | 1394 | |
4487dad0 | 1395 | } |
abaf1f1d | 1396 | } |
4487dad0 | 1397 | } |
1398 | ||
abaf1f1d | 1399 | } |
1400 | ||
1401 | if (fCompress) { | |
1402 | digitsA->Compress(1,0); | |
1403 | digitsB->Compress(1,0); | |
1404 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1405 | dictionaryA[iDict]->Compress(1,0); | |
1406 | dictionaryB[iDict]->Compress(1,0); | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | } | |
1411 | ||
1412 | // The next set of s-digits | |
1413 | mergeSDigitsManager = (AliTRDdigitsManager *) | |
1414 | fSDigitsManagerList->After(mergeSDigitsManager); | |
1415 | ||
1416 | } | |
1417 | ||
16bf9884 | 1418 | return kTRUE; |
1419 | ||
1420 | } | |
1421 | ||
abaf1f1d | 1422 | //_____________________________________________________________________________ |
1423 | Bool_t AliTRDdigitizer::SDigits2Digits() | |
1424 | { | |
1425 | // | |
1426 | // Merges the input s-digits and converts them to normal digits | |
1427 | // | |
1428 | ||
1429 | if (!MergeSDigits()) return kFALSE; | |
1430 | ||
1431 | return ConvertSDigits(); | |
1432 | ||
1433 | } | |
1434 | ||
793ff80c | 1435 | //_____________________________________________________________________________ |
1436 | Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector) | |
1437 | { | |
1438 | // | |
1439 | // Checks whether a detector is enabled | |
1440 | // | |
1441 | ||
1442 | if ((fTRD->GetSensChamber() >= 0) && | |
1443 | (fTRD->GetSensChamber() != chamber)) return kFALSE; | |
1444 | if ((fTRD->GetSensPlane() >= 0) && | |
c1e4b257 | 1445 | (fTRD->GetSensPlane() != plane)) return kFALSE; |
793ff80c | 1446 | if ( fTRD->GetSensSector() >= 0) { |
1447 | Int_t sens1 = fTRD->GetSensSector(); | |
1448 | Int_t sens2 = sens1 + fTRD->GetSensSectorRange(); | |
1449 | sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect())) | |
1450 | * AliTRDgeometry::Nsect(); | |
1451 | if (sens1 < sens2) { | |
1452 | if ((sector < sens1) || (sector >= sens2)) return kFALSE; | |
1453 | } | |
1454 | else { | |
1455 | if ((sector < sens1) && (sector >= sens2)) return kFALSE; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | return kTRUE; | |
1460 | ||
1461 | } | |
1462 | ||
f7336fa3 | 1463 | //_____________________________________________________________________________ |
0a29d0f1 | 1464 | Bool_t AliTRDdigitizer::WriteDigits() const |
f7336fa3 | 1465 | { |
1466 | // | |
1467 | // Writes out the TRD-digits and the dictionaries | |
1468 | // | |
1469 | ||
da581aea | 1470 | // Store the digits and the dictionary in the tree |
abaf1f1d | 1471 | return fDigitsManager->WriteDigits(); |
f7336fa3 | 1472 | |
1473 | } | |
793ff80c | 1474 | |
e23fbb27 | 1475 | //_____________________________________________________________________________ |
1476 | void AliTRDdigitizer::DeConvExp(Double_t *source, Double_t *target | |
1477 | , Int_t n, Int_t nexp) | |
1478 | { | |
1479 | // | |
1480 | // Does the deconvolution by the digital filter. | |
1481 | // | |
1482 | // Author: Marcus Gutfleisch, KIP Heidelberg | |
1483 | // Optimized for: New TRF from Venelin Angelov, simulated with CADENCE | |
1484 | // Pad-ground capacitance = 25 pF | |
1485 | // Pad-pad cross talk capacitance = 6 pF | |
1486 | // For 10 MHz digitization, corresponding to 20 time bins | |
1487 | // in the drift region | |
1488 | // | |
1489 | ||
1490 | Double_t rates[2]; | |
1491 | Double_t coefficients[2]; | |
1492 | ||
1493 | /* initialize (coefficient = alpha, rates = lambda) */ | |
1494 | ||
1495 | if( nexp == 1 ) { | |
1496 | rates[0] = 0.466998; | |
1497 | /* no rescaling */ | |
1498 | coefficients[0] = 1.0; | |
1499 | } | |
1500 | if( nexp == 2 ) { | |
1501 | rates[0] = 0.8988162; | |
1502 | coefficients[0] = 0.11392069; | |
1503 | rates[1] = 0.3745688; | |
1504 | coefficients[1] = 0.8860793; | |
1505 | /* no rescaling */ | |
1506 | Float_t sumc = coefficients[0]+coefficients[1]; | |
1507 | coefficients[0] /= sumc; | |
1508 | coefficients[1] /= sumc; | |
1509 | } | |
1510 | ||
1511 | Int_t i, k; | |
1512 | Double_t reminder[2]; | |
1513 | Double_t correction, result; | |
1514 | ||
1515 | /* attention: computation order is important */ | |
1516 | correction=0.0; | |
1517 | for ( k = 0; k < nexp; k++ ) reminder[k]=0.0; | |
1518 | ||
1519 | for ( i = 0; i < n; i++ ) { | |
1520 | result = ( source[i] - correction ); /* no rescaling */ | |
1521 | target[i] = result; | |
1522 | ||
1523 | for ( k = 0; k < nexp; k++ ) reminder[k] = rates[k] | |
1524 | * ( reminder[k] + coefficients[k] * result); | |
1525 | ||
1526 | correction=0.0; | |
1527 | for ( k = 0; k < nexp; k++ ) correction += reminder[k]; | |
1528 | } | |
1529 | ||
1530 | } | |
1531 | ||
8e64dd77 | 1532 | //_____________________________________________________________________________ |
1533 | void AliTRDdigitizer::InitOutput(TFile *file, Int_t iEvent) | |
1534 | { | |
1535 | // | |
1536 | // Initializes the output branches | |
1537 | // | |
1538 | ||
1539 | fEvent = iEvent; | |
1540 | fDigitsManager->MakeTreeAndBranches(file,iEvent); | |
1541 | ||
1542 | } |