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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 | ||
88cb7938 | 16 | /* $Id$ */ |
f7336fa3 | 17 | |
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // Creates and handles digits from TRD hits // | |
abaf1f1d | 21 | // Author: C. Blume (C.Blume@gsi.de) // |
f7336fa3 | 22 | // // |
23 | // The following effects are included: // | |
24 | // - Diffusion // | |
25 | // - ExB effects // | |
26 | // - Gas gain including fluctuations // | |
27 | // - Pad-response (simple Gaussian approximation) // | |
abaf1f1d | 28 | // - Time-response // |
f7336fa3 | 29 | // - Electronics noise // |
30 | // - Electronics gain // | |
31 | // - Digitization // | |
32 | // - ADC threshold // | |
33 | // The corresponding parameter can be adjusted via the various // | |
34 | // Set-functions. If these parameters are not explicitly set, default // | |
35 | // values are used (see Init-function). // | |
abaf1f1d | 36 | // As an example on how to use this class to produce digits from hits // |
37 | // have a look at the macro hits2digits.C // | |
38 | // The production of summable digits is demonstrated in hits2sdigits.C // | |
39 | // and the subsequent conversion of the s-digits into normal digits is // | |
40 | // explained in sdigits2digits.C. // | |
f7336fa3 | 41 | // // |
42 | /////////////////////////////////////////////////////////////////////////////// | |
43 | ||
6798b56e | 44 | #include <stdlib.h> |
45 | ||
f7336fa3 | 46 | #include <TMath.h> |
47 | #include <TVector.h> | |
48 | #include <TRandom.h> | |
94de3818 | 49 | #include <TROOT.h> |
50 | #include <TTree.h> | |
793ff80c | 51 | #include <TFile.h> |
52 | #include <TF1.h> | |
abaf1f1d | 53 | #include <TList.h> |
85cbec76 | 54 | #include <TTask.h> |
793ff80c | 55 | |
56 | #include "AliRun.h" | |
88cb7938 | 57 | #include "AliRunLoader.h" |
58 | #include "AliLoader.h" | |
59 | #include "AliConfig.h" | |
db30bf0f | 60 | #include "AliMagF.h" |
85cbec76 | 61 | #include "AliRunDigitizer.h" |
88cb7938 | 62 | #include "AliRunLoader.h" |
63 | #include "AliLoader.h" | |
f7336fa3 | 64 | |
65 | #include "AliTRD.h" | |
793ff80c | 66 | #include "AliTRDhit.h" |
f7336fa3 | 67 | #include "AliTRDdigitizer.h" |
da581aea | 68 | #include "AliTRDdataArrayI.h" |
69 | #include "AliTRDdataArrayF.h" | |
793ff80c | 70 | #include "AliTRDsegmentArray.h" |
da581aea | 71 | #include "AliTRDdigitsManager.h" |
793ff80c | 72 | #include "AliTRDgeometry.h" |
4487dad0 | 73 | #include "AliTRDparameter.h" |
f7336fa3 | 74 | |
75 | ClassImp(AliTRDdigitizer) | |
76 | ||
77 | //_____________________________________________________________________________ | |
85cbec76 | 78 | AliTRDdigitizer::AliTRDdigitizer() |
f7336fa3 | 79 | { |
80 | // | |
81 | // AliTRDdigitizer default constructor | |
82 | // | |
83 | ||
85a5290f | 84 | fRunLoader = 0; |
4487dad0 | 85 | fDigitsManager = 0; |
4487dad0 | 86 | fSDigitsManager = 0; |
85a5290f | 87 | fSDigitsManagerList = 0; |
4487dad0 | 88 | fTRD = 0; |
89 | fGeo = 0; | |
90 | fPar = 0; | |
abaf1f1d | 91 | fEvent = 0; |
85a5290f | 92 | fMasks = 0; |
abaf1f1d | 93 | fCompress = kTRUE; |
e23fbb27 | 94 | fDebug = 0; |
abaf1f1d | 95 | fSDigits = kFALSE; |
96 | fSDigitsScale = 0.0; | |
4487dad0 | 97 | fMergeSignalOnly = kFALSE; |
0c24ba98 | 98 | fSimpleSim = kFALSE; |
99 | fSimpleDet = 0; | |
100 | ||
f7336fa3 | 101 | } |
102 | ||
103 | //_____________________________________________________________________________ | |
104 | AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title) | |
85cbec76 | 105 | :AliDigitizer(name,title) |
f7336fa3 | 106 | { |
107 | // | |
85cbec76 | 108 | // AliTRDdigitizer constructor |
109 | // | |
110 | ||
85a5290f | 111 | fRunLoader = 0; |
88cb7938 | 112 | |
113 | //NewIO: These data members probably are not needed anymore | |
4487dad0 | 114 | fDigitsManager = 0; |
4487dad0 | 115 | fSDigitsManager = 0; |
85a5290f | 116 | fSDigitsManagerList = 0; |
4487dad0 | 117 | fTRD = 0; |
118 | fGeo = 0; | |
119 | fPar = 0; | |
88cb7938 | 120 | //End NewIO comment |
85cbec76 | 121 | fEvent = 0; |
85a5290f | 122 | fMasks = 0; |
85cbec76 | 123 | fCompress = kTRUE; |
e23fbb27 | 124 | fDebug = 0; |
85cbec76 | 125 | fSDigits = kFALSE; |
85a5290f | 126 | fSDigitsScale = 100.; // For the summable digits |
4487dad0 | 127 | fMergeSignalOnly = kFALSE; |
0c24ba98 | 128 | fSimpleSim = kFALSE; |
129 | fSimpleDet = 0; | |
130 | ||
85cbec76 | 131 | |
132 | } | |
133 | ||
134 | //_____________________________________________________________________________ | |
135 | AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager | |
136 | , const Text_t *name, const Text_t *title) | |
137 | :AliDigitizer(manager,name,title) | |
138 | { | |
139 | // | |
140 | // AliTRDdigitizer constructor | |
f7336fa3 | 141 | // |
142 | ||
85a5290f | 143 | fRunLoader = 0; |
4487dad0 | 144 | fDigitsManager = 0; |
4487dad0 | 145 | fSDigitsManager = 0; |
85a5290f | 146 | fSDigitsManagerList = 0; |
4487dad0 | 147 | fTRD = 0; |
148 | fGeo = 0; | |
149 | fPar = 0; | |
bfc40adc | 150 | fEvent = 0; |
85a5290f | 151 | fMasks = 0; |
bfc40adc | 152 | fCompress = kTRUE; |
153 | fDebug = 0; | |
154 | fSDigits = kFALSE; | |
85a5290f | 155 | fSDigitsScale = 100.; // For the summable digits |
4487dad0 | 156 | fMergeSignalOnly = kFALSE; |
0c24ba98 | 157 | fSimpleSim = kFALSE; |
158 | fSimpleDet = 0; | |
159 | ||
bfc40adc | 160 | |
161 | } | |
162 | ||
163 | //_____________________________________________________________________________ | |
164 | AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager) | |
165 | :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer") | |
166 | { | |
167 | // | |
168 | // AliTRDdigitizer constructor | |
169 | // | |
170 | ||
88cb7938 | 171 | |
85a5290f | 172 | fRunLoader = 0; |
4487dad0 | 173 | fDigitsManager = 0; |
4487dad0 | 174 | fSDigitsManager = 0; |
85a5290f | 175 | fSDigitsManagerList = 0; |
4487dad0 | 176 | fTRD = 0; |
177 | fGeo = 0; | |
178 | fPar = 0; | |
abaf1f1d | 179 | fEvent = 0; |
85a5290f | 180 | fMasks = 0; |
abaf1f1d | 181 | fCompress = kTRUE; |
e23fbb27 | 182 | fDebug = 0; |
abaf1f1d | 183 | fSDigits = kFALSE; |
85a5290f | 184 | fSDigitsScale = 100.; // For the summable digits |
4487dad0 | 185 | fMergeSignalOnly = kFALSE; |
0c24ba98 | 186 | fSimpleSim = kFALSE; |
187 | fSimpleDet = 0; | |
793ff80c | 188 | |
f7336fa3 | 189 | |
190 | } | |
191 | ||
8230f242 | 192 | //_____________________________________________________________________________ |
73ae7b59 | 193 | AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d):AliDigitizer(d) |
8230f242 | 194 | { |
195 | // | |
196 | // AliTRDdigitizer copy constructor | |
197 | // | |
198 | ||
dd9a6ee3 | 199 | ((AliTRDdigitizer &) d).Copy(*this); |
8230f242 | 200 | |
201 | } | |
202 | ||
f7336fa3 | 203 | //_____________________________________________________________________________ |
204 | AliTRDdigitizer::~AliTRDdigitizer() | |
205 | { | |
8230f242 | 206 | // |
207 | // AliTRDdigitizer destructor | |
208 | // | |
f7336fa3 | 209 | |
abaf1f1d | 210 | |
211 | if (fDigitsManager) { | |
212 | delete fDigitsManager; | |
4487dad0 | 213 | fDigitsManager = 0; |
f7336fa3 | 214 | } |
215 | ||
abaf1f1d | 216 | if (fSDigitsManager) { |
217 | delete fSDigitsManager; | |
4487dad0 | 218 | fSDigitsManager = 0; |
f7336fa3 | 219 | } |
220 | ||
abaf1f1d | 221 | if (fSDigitsManagerList) { |
abaf1f1d | 222 | delete fSDigitsManagerList; |
4487dad0 | 223 | fSDigitsManagerList = 0; |
e23fbb27 | 224 | } |
225 | ||
226 | if (fMasks) { | |
227 | delete [] fMasks; | |
228 | fMasks = 0; | |
229 | } | |
230 | ||
f7336fa3 | 231 | } |
232 | ||
8230f242 | 233 | //_____________________________________________________________________________ |
dd9a6ee3 | 234 | AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d) |
235 | { | |
236 | // | |
237 | // Assignment operator | |
238 | // | |
239 | ||
240 | if (this != &d) ((AliTRDdigitizer &) d).Copy(*this); | |
241 | return *this; | |
242 | ||
243 | } | |
244 | ||
245 | //_____________________________________________________________________________ | |
246 | void AliTRDdigitizer::Copy(TObject &d) | |
8230f242 | 247 | { |
248 | // | |
249 | // Copy function | |
250 | // | |
251 | ||
85a5290f | 252 | ((AliTRDdigitizer &) d).fRunLoader = 0; |
4487dad0 | 253 | ((AliTRDdigitizer &) d).fDigitsManager = 0; |
85a5290f | 254 | ((AliTRDdigitizer &) d).fSDigitsManager = 0; |
255 | ((AliTRDdigitizer &) d).fSDigitsManagerList = 0; | |
4487dad0 | 256 | ((AliTRDdigitizer &) d).fTRD = 0; |
257 | ((AliTRDdigitizer &) d).fGeo = 0; | |
4487dad0 | 258 | ((AliTRDdigitizer &) d).fPar = 0; |
85a5290f | 259 | ((AliTRDdigitizer &) d).fEvent = 0; |
260 | ((AliTRDdigitizer &) d).fMasks = 0; | |
abaf1f1d | 261 | ((AliTRDdigitizer &) d).fCompress = fCompress; |
e23fbb27 | 262 | ((AliTRDdigitizer &) d).fDebug = fDebug ; |
abaf1f1d | 263 | ((AliTRDdigitizer &) d).fSDigits = fSDigits; |
264 | ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale; | |
4487dad0 | 265 | ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly; |
0c24ba98 | 266 | ((AliTRDdigitizer &) d).fSimpleSim = fSimpleSim; |
267 | ((AliTRDdigitizer &) d).fSimpleDet = fSimpleDet; | |
268 | ||
e23fbb27 | 269 | } |
270 | ||
e23fbb27 | 271 | //_____________________________________________________________________________ |
272 | void AliTRDdigitizer::Exec(Option_t* option) | |
273 | { | |
274 | // | |
275 | // Executes the merging | |
276 | // | |
277 | ||
278 | Int_t iInput; | |
279 | ||
280 | AliTRDdigitsManager *sdigitsManager; | |
281 | ||
282 | TString optionString = option; | |
283 | if (optionString.Contains("deb")) { | |
284 | fDebug = 1; | |
285 | if (optionString.Contains("2")) { | |
286 | fDebug = 2; | |
287 | } | |
288 | printf("<AliTRDdigitizer::Exec> "); | |
289 | printf("Called with debug option %d\n",fDebug); | |
290 | } | |
291 | ||
cec4059b | 292 | // The AliRoot file is already connected by the manager |
88cb7938 | 293 | AliRunLoader* inrl; |
294 | ||
295 | if (gAlice) | |
296 | { | |
4487dad0 | 297 | if (fDebug > 0) { |
298 | printf("<AliTRDdigitizer::Exec> "); | |
299 | printf("AliRun object found on file.\n"); | |
300 | } | |
88cb7938 | 301 | } |
4487dad0 | 302 | else { |
88cb7938 | 303 | inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0)); |
304 | inrl->LoadgAlice(); | |
305 | gAlice = inrl->GetAliRun(); | |
306 | if (!gAlice) | |
307 | { | |
308 | printf("<AliTRDdigitizer::Exec> "); | |
309 | printf("Could not find AliRun object.\n"); | |
310 | return; | |
311 | } | |
4487dad0 | 312 | } |
cec4059b | 313 | |
e23fbb27 | 314 | Int_t nInput = fManager->GetNinputs(); |
315 | fMasks = new Int_t[nInput]; | |
316 | for (iInput = 0; iInput < nInput; iInput++) { | |
317 | fMasks[iInput] = fManager->GetMask(iInput); | |
318 | } | |
e23fbb27 | 319 | |
320 | // Initialization | |
e23fbb27 | 321 | |
67c67368 | 322 | AliRunLoader* orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); |
323 | if (InitDetector()) { | |
324 | AliLoader* ogime = orl->GetLoader("TRDLoader"); | |
325 | ||
326 | TTree* tree = 0; | |
327 | if (fSDigits) | |
328 | { | |
329 | //if we produce SDigits | |
330 | tree = ogime->TreeS(); | |
331 | if (!tree) | |
332 | { | |
333 | ogime->MakeTree("S"); | |
334 | tree = ogime->TreeS(); | |
335 | } | |
336 | } | |
337 | else | |
338 | {//if we produce Digits | |
339 | tree = ogime->TreeD(); | |
340 | if (!tree) | |
341 | { | |
342 | ogime->MakeTree("D"); | |
343 | tree = ogime->TreeD(); | |
344 | } | |
345 | } | |
346 | MakeBranch(tree); | |
347 | } | |
348 | ||
e23fbb27 | 349 | for (iInput = 0; iInput < nInput; iInput++) { |
350 | ||
351 | if (fDebug > 0) { | |
352 | printf("<AliTRDdigitizer::Exec> "); | |
353 | printf("Add input stream %d\n",iInput); | |
354 | } | |
355 | ||
c57e2264 | 356 | // check if the input tree exists |
88cb7938 | 357 | inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); |
358 | AliLoader* gime = inrl->GetLoader("TRDLoader"); | |
359 | ||
360 | TTree * treees = gime->TreeS(); | |
361 | if (treees == 0x0) | |
362 | { | |
363 | if (gime->LoadSDigits()) | |
364 | { | |
365 | Error("Exec","Error Occured while loading S. Digits for input %d.",iInput); | |
366 | return; | |
367 | } | |
368 | treees = gime->TreeS(); | |
369 | } | |
370 | ||
371 | if (treees == 0x0) { | |
c57e2264 | 372 | printf("<AliTRDdigitizer::Exec> "); |
373 | printf("Input stream %d does not exist\n",iInput); | |
374 | return; | |
375 | } | |
376 | ||
e23fbb27 | 377 | // Read the s-digits via digits manager |
378 | sdigitsManager = new AliTRDdigitsManager(); | |
379 | sdigitsManager->SetDebug(fDebug); | |
380 | sdigitsManager->SetSDigits(kTRUE); | |
88cb7938 | 381 | |
382 | AliRunLoader* rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); | |
383 | AliLoader* gimme = rl->GetLoader("TRDLoader"); | |
384 | if (!gimme->TreeS()) gimme->LoadSDigits(); | |
385 | sdigitsManager->ReadDigits(gimme->TreeS()); | |
e23fbb27 | 386 | |
387 | // Add the s-digits to the input list | |
388 | AddSDigitsManager(sdigitsManager); | |
389 | ||
390 | } | |
391 | ||
392 | // Convert the s-digits to normal digits | |
393 | if (fDebug > 0) { | |
394 | printf("<AliTRDdigitizer::Exec> "); | |
395 | printf("Do the conversion\n"); | |
396 | } | |
397 | SDigits2Digits(); | |
398 | ||
399 | // Store the digits | |
400 | if (fDebug > 0) { | |
401 | printf("<AliTRDdigitizer::Exec> "); | |
402 | printf("Write the digits\n"); | |
403 | } | |
88cb7938 | 404 | |
e23fbb27 | 405 | fDigitsManager->WriteDigits(); |
88cb7938 | 406 | |
67c67368 | 407 | //Write parameters |
408 | orl->CdGAFile(); | |
409 | GetParameter()->Write(); | |
410 | ||
e23fbb27 | 411 | if (fDebug > 0) { |
412 | printf("<AliTRDdigitizer::Exec> "); | |
413 | printf("Done\n"); | |
414 | } | |
415 | ||
b1113c6b | 416 | DeleteSDigitsManager(); |
417 | ||
e23fbb27 | 418 | } |
419 | ||
f7336fa3 | 420 | //_____________________________________________________________________________ |
e23fbb27 | 421 | Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent) |
f7336fa3 | 422 | { |
423 | // | |
424 | // Opens a ROOT-file with TRD-hits and reads in the hit-tree | |
425 | // | |
426 | ||
427 | // Connect the AliRoot file containing Geometry, Kine, and Hits | |
88cb7938 | 428 | |
806c4597 | 429 | fRunLoader = AliRunLoader::Open(file,AliConfig::fgkDefaultEventFolderName, |
430 | "UPDATE"); | |
88cb7938 | 431 | |
432 | if (!fRunLoader) | |
433 | { | |
434 | Error("Open","Can not open session for file %s.",file); | |
435 | return kFALSE; | |
436 | } | |
437 | ||
438 | fRunLoader->LoadgAlice(); | |
439 | gAlice = fRunLoader->GetAliRun(); | |
440 | ||
da581aea | 441 | if (gAlice) { |
e23fbb27 | 442 | if (fDebug > 0) { |
443 | printf("<AliTRDdigitizer::Open> "); | |
abaf1f1d | 444 | printf("AliRun object found on file.\n"); |
445 | } | |
da581aea | 446 | } |
447 | else { | |
e23fbb27 | 448 | printf("<AliTRDdigitizer::Open> "); |
da581aea | 449 | printf("Could not find AliRun object.\n"); |
450 | return kFALSE; | |
451 | } | |
f7336fa3 | 452 | |
453 | fEvent = nEvent; | |
454 | ||
455 | // Import the Trees for the event nEvent in the file | |
88cb7938 | 456 | fRunLoader->GetEvent(fEvent); |
457 | ||
458 | AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); | |
459 | if (!loader) | |
460 | { | |
461 | Error("Open","Can not get TRD loader from Run Loader"); | |
462 | return kFALSE; | |
463 | } | |
464 | ||
abaf1f1d | 465 | if (InitDetector()) { |
88cb7938 | 466 | TTree* tree = 0; |
467 | if (fSDigits) | |
468 | { | |
469 | //if we produce SDigits | |
470 | tree = loader->TreeS(); | |
471 | if (!tree) | |
472 | { | |
473 | loader->MakeTree("S"); | |
474 | tree = loader->TreeS(); | |
475 | } | |
476 | } | |
477 | else | |
478 | {//if we produce Digits | |
479 | tree = loader->TreeD(); | |
480 | if (!tree) | |
481 | { | |
482 | loader->MakeTree("D"); | |
483 | tree = loader->TreeD(); | |
484 | } | |
485 | } | |
486 | return MakeBranch(tree); | |
abaf1f1d | 487 | } |
488 | else { | |
489 | return kFALSE; | |
490 | } | |
793ff80c | 491 | |
492 | } | |
493 | ||
494 | //_____________________________________________________________________________ | |
495 | Bool_t AliTRDdigitizer::InitDetector() | |
496 | { | |
497 | // | |
498 | // Sets the pointer to the TRD detector and the geometry | |
499 | // | |
500 | ||
dd9a6ee3 | 501 | // Get the pointer to the detector class and check for version 1 |
4487dad0 | 502 | fTRD = (AliTRD *) gAlice->GetDetector("TRD"); |
cec4059b | 503 | if (!fTRD) { |
504 | printf("<AliTRDdigitizer::InitDetector> "); | |
505 | printf("No TRD module found\n"); | |
506 | exit(1); | |
507 | } | |
dd9a6ee3 | 508 | if (fTRD->IsVersion() != 1) { |
e23fbb27 | 509 | printf("<AliTRDdigitizer::InitDetector> "); |
dd9a6ee3 | 510 | printf("TRD must be version 1 (slow simulator).\n"); |
511 | exit(1); | |
512 | } | |
513 | ||
514 | // Get the geometry | |
515 | fGeo = fTRD->GetGeometry(); | |
e23fbb27 | 516 | if (fDebug > 0) { |
517 | printf("<AliTRDdigitizer::InitDetector> "); | |
abaf1f1d | 518 | printf("Geometry version %d\n",fGeo->IsVersion()); |
519 | } | |
dd9a6ee3 | 520 | |
abaf1f1d | 521 | // Create a digits manager |
522 | fDigitsManager = new AliTRDdigitsManager(); | |
523 | fDigitsManager->SetSDigits(fSDigits); | |
524 | fDigitsManager->CreateArrays(); | |
525 | fDigitsManager->SetEvent(fEvent); | |
e23fbb27 | 526 | fDigitsManager->SetDebug(fDebug); |
abaf1f1d | 527 | |
528 | // The list for the input s-digits manager to be merged | |
529 | fSDigitsManagerList = new TList(); | |
530 | ||
4487dad0 | 531 | return kTRUE; |
f7336fa3 | 532 | |
533 | } | |
534 | ||
6244debe | 535 | //_____________________________________________________________________________ |
88cb7938 | 536 | Bool_t AliTRDdigitizer::MakeBranch(TTree* tree) const |
6244debe | 537 | { |
abaf1f1d | 538 | // |
539 | // Create the branches for the digits array | |
6244debe | 540 | // |
541 | ||
88cb7938 | 542 | return fDigitsManager->MakeBranch(tree); |
6244debe | 543 | |
544 | } | |
545 | ||
f7336fa3 | 546 | //_____________________________________________________________________________ |
547 | Bool_t AliTRDdigitizer::MakeDigits() | |
548 | { | |
549 | // | |
872a7aba | 550 | // Creates digits. |
f7336fa3 | 551 | // |
552 | ||
f7336fa3 | 553 | /////////////////////////////////////////////////////////////// |
554 | // Parameter | |
555 | /////////////////////////////////////////////////////////////// | |
556 | ||
557 | // Converts number of electrons to fC | |
872a7aba | 558 | const Double_t kEl2fC = 1.602E-19 * 1.0E15; |
f7336fa3 | 559 | |
560 | /////////////////////////////////////////////////////////////// | |
561 | ||
793ff80c | 562 | // Number of pads included in the pad response |
563 | const Int_t kNpad = 3; | |
564 | ||
565 | // Number of track dictionary arrays | |
dd56b762 | 566 | const Int_t kNDict = AliTRDdigitsManager::kNDict; |
793ff80c | 567 | |
872a7aba | 568 | // Half the width of the amplification region |
569 | const Float_t kAmWidth = AliTRDgeometry::AmThick() / 2.; | |
570 | ||
c3a4830f | 571 | Int_t iRow, iCol, iTime, iPad; |
71d9fa7b | 572 | Int_t iDict = 0; |
793ff80c | 573 | Int_t nBytes = 0; |
f7336fa3 | 574 | |
575 | Int_t totalSizeDigits = 0; | |
576 | Int_t totalSizeDict0 = 0; | |
577 | Int_t totalSizeDict1 = 0; | |
578 | Int_t totalSizeDict2 = 0; | |
579 | ||
872a7aba | 580 | Int_t timeTRDbeg = 0; |
581 | Int_t timeTRDend = 1; | |
582 | ||
583 | Float_t pos[3]; | |
584 | Float_t rot[3]; | |
585 | Float_t xyz[3]; | |
586 | Float_t padSignal[kNpad]; | |
587 | Float_t signalOld[kNpad]; | |
588 | ||
793ff80c | 589 | AliTRDdataArrayF *signals = 0; |
590 | AliTRDdataArrayI *digits = 0; | |
8230f242 | 591 | AliTRDdataArrayI *dictionary[kNDict]; |
da581aea | 592 | |
4487dad0 | 593 | // Create a default parameter class if none is defined |
594 | if (!fPar) { | |
595 | fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter"); | |
596 | if (fDebug > 0) { | |
597 | printf("<AliTRDdigitizer::MakeDigits> "); | |
598 | printf("Create the default parameter object\n"); | |
599 | } | |
600 | } | |
601 | ||
793ff80c | 602 | // Create a container for the amplitudes |
603 | AliTRDsegmentArray *signalsArray | |
e23fbb27 | 604 | = new AliTRDsegmentArray("AliTRDdataArrayF" |
605 | ,AliTRDgeometry::Ndet()); | |
793ff80c | 606 | |
4487dad0 | 607 | if (fPar->TRFOn()) { |
608 | timeTRDbeg = ((Int_t) (-fPar->GetTRFlo() / fPar->GetTimeBinSize())) - 1; | |
609 | timeTRDend = ((Int_t) ( fPar->GetTRFhi() / fPar->GetTimeBinSize())) - 1; | |
e23fbb27 | 610 | if (fDebug > 0) { |
611 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 612 | printf("Sample the TRF between -%d and %d\n",timeTRDbeg,timeTRDend); |
613 | } | |
da581aea | 614 | } |
615 | ||
4487dad0 | 616 | Float_t elAttachProp = fPar->GetElAttachProp() / 100.; |
793ff80c | 617 | |
872a7aba | 618 | if (!fGeo) { |
e23fbb27 | 619 | printf("<AliTRDdigitizer::MakeDigits> "); |
872a7aba | 620 | printf("No geometry defined\n"); |
621 | return kFALSE; | |
622 | } | |
623 | ||
e23fbb27 | 624 | if (fDebug > 0) { |
625 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 626 | printf("Start creating digits.\n"); |
627 | } | |
872a7aba | 628 | |
88cb7938 | 629 | AliLoader* gimme = fRunLoader->GetLoader("TRDLoader"); |
630 | if (!gimme->TreeH()) gimme->LoadHits(); | |
631 | TTree* hitTree = gimme->TreeH(); | |
632 | if (hitTree == 0x0) | |
633 | { | |
634 | Error("MakeDigits","Can not get TreeH"); | |
635 | return kFALSE; | |
636 | } | |
637 | fTRD->SetTreeAddress(); | |
638 | ||
793ff80c | 639 | // Get the number of entries in the hit tree |
640 | // (Number of primary particles creating a hit somewhere) | |
0c24ba98 | 641 | Int_t nTrack = 1; |
642 | if (!fSimpleSim) { | |
643 | nTrack = (Int_t) hitTree->GetEntries(); | |
644 | if (fDebug > 0) { | |
645 | printf("<AliTRDdigitizer::MakeDigits> "); | |
646 | printf("Found %d primary particles\n",nTrack); | |
647 | } | |
648 | } | |
793ff80c | 649 | |
650 | Int_t detectorOld = -1; | |
651 | Int_t countHits = 0; | |
652 | ||
653 | // Loop through all entries in the tree | |
654 | for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) { | |
655 | ||
0c24ba98 | 656 | if (!fSimpleSim) { |
657 | gAlice->ResetHits(); | |
658 | nBytes += hitTree->GetEvent(iTrack); | |
659 | } | |
793ff80c | 660 | |
e23fbb27 | 661 | // Loop through the TRD hits |
662 | Int_t iHit = 0; | |
663 | AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1); | |
664 | while (hit) { | |
665 | ||
793ff80c | 666 | countHits++; |
e23fbb27 | 667 | iHit++; |
668 | ||
669 | pos[0] = hit->X(); | |
670 | pos[1] = hit->Y(); | |
671 | pos[2] = hit->Z(); | |
672 | Float_t q = hit->GetCharge(); | |
673 | Int_t track = hit->Track(); | |
674 | Int_t detector = hit->GetDetector(); | |
675 | Int_t plane = fGeo->GetPlane(detector); | |
676 | Int_t sector = fGeo->GetSector(detector); | |
677 | Int_t chamber = fGeo->GetChamber(detector); | |
4487dad0 | 678 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
679 | Int_t nColMax = fPar->GetColMax(plane); | |
680 | Int_t nTimeMax = fPar->GetTimeMax(); | |
681 | Int_t nTimeBefore = fPar->GetTimeBefore(); | |
682 | Int_t nTimeAfter = fPar->GetTimeAfter(); | |
683 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
684 | Float_t row0 = fPar->GetRow0(plane,chamber,sector); | |
685 | Float_t col0 = fPar->GetCol0(plane); | |
686 | Float_t time0 = fPar->GetTime0(plane); | |
687 | Float_t rowPadSize = fPar->GetRowPadSize(plane,chamber,sector); | |
688 | Float_t colPadSize = fPar->GetColPadSize(plane); | |
689 | Float_t timeBinSize = fPar->GetTimeBinSize(); | |
872a7aba | 690 | Float_t divideRow = 1.0 / rowPadSize; |
691 | Float_t divideCol = 1.0 / colPadSize; | |
692 | Float_t divideTime = 1.0 / timeBinSize; | |
793ff80c | 693 | |
e23fbb27 | 694 | if (fDebug > 1) { |
793ff80c | 695 | printf("Analyze hit no. %d ",iHit); |
696 | printf("-----------------------------------------------------------\n"); | |
697 | hit->Dump(); | |
698 | printf("plane = %d, sector = %d, chamber = %d\n" | |
699 | ,plane,sector,chamber); | |
700 | printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n" | |
701 | ,nRowMax,nColMax,nTimeMax); | |
872a7aba | 702 | printf("nTimeBefore = %d, nTimeAfter = %d, nTimeTotal = %d\n" |
703 | ,nTimeBefore,nTimeAfter,nTimeTotal); | |
793ff80c | 704 | printf("row0 = %f, col0 = %f, time0 = %f\n" |
705 | ,row0,col0,time0); | |
c1e4b257 | 706 | printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n" |
707 | ,rowPadSize,colPadSize,timeBinSize); | |
793ff80c | 708 | } |
709 | ||
e23fbb27 | 710 | // Don't analyze test hits and switched off detectors |
711 | if ((CheckDetector(plane,chamber,sector)) && | |
712 | (((Int_t) q) != 0)) { | |
dd56b762 | 713 | |
e23fbb27 | 714 | if (detector != detectorOld) { |
e153aaf6 | 715 | |
e23fbb27 | 716 | if (fDebug > 1) { |
717 | printf("<AliTRDdigitizer::MakeDigits> "); | |
718 | printf("Get new container. New det = %d, Old det = %d\n" | |
719 | ,detector,detectorOld); | |
dd9a6ee3 | 720 | } |
e23fbb27 | 721 | // Compress the old one if enabled |
722 | if ((fCompress) && (detectorOld > -1)) { | |
723 | if (fDebug > 1) { | |
724 | printf("<AliTRDdigitizer::MakeDigits> "); | |
725 | printf("Compress the old container ..."); | |
726 | } | |
727 | signals->Compress(1,0); | |
728 | for (iDict = 0; iDict < kNDict; iDict++) { | |
729 | dictionary[iDict]->Compress(1,0); | |
c1e4b257 | 730 | } |
e23fbb27 | 731 | if (fDebug > 1) printf("done\n"); |
793ff80c | 732 | } |
e23fbb27 | 733 | // Get the new container |
734 | signals = (AliTRDdataArrayF *) signalsArray->At(detector); | |
735 | if (signals->GetNtime() == 0) { | |
736 | // Allocate a new one if not yet existing | |
737 | if (fDebug > 1) { | |
738 | printf("<AliTRDdigitizer::MakeDigits> "); | |
739 | printf("Allocate a new container ... "); | |
740 | } | |
741 | signals->Allocate(nRowMax,nColMax,nTimeTotal); | |
793ff80c | 742 | } |
0c24ba98 | 743 | else if (fSimpleSim) { |
744 | // Clear an old one for the simple simulation | |
745 | if (fDebug > 1) { | |
746 | printf("<AliTRDdigitizer::MakeDigits> "); | |
747 | printf("Clear a old container ... "); | |
748 | } | |
749 | signals->Clear(); | |
750 | } | |
793ff80c | 751 | else { |
e23fbb27 | 752 | // Expand an existing one |
753 | if (fCompress) { | |
754 | if (fDebug > 1) { | |
755 | printf("<AliTRDdigitizer::MakeDigits> "); | |
756 | printf("Expand an existing container ... "); | |
757 | } | |
758 | signals->Expand(); | |
759 | } | |
793ff80c | 760 | } |
e23fbb27 | 761 | // The same for the dictionary |
0c24ba98 | 762 | if (!fSimpleSim) { |
763 | for (iDict = 0; iDict < kNDict; iDict++) { | |
764 | dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict); | |
765 | if (dictionary[iDict]->GetNtime() == 0) { | |
766 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
767 | } | |
768 | else { | |
769 | if (fCompress) dictionary[iDict]->Expand(); | |
770 | } | |
e23fbb27 | 771 | } |
772 | } | |
773 | if (fDebug > 1) printf("done\n"); | |
774 | detectorOld = detector; | |
793ff80c | 775 | } |
776 | ||
e23fbb27 | 777 | // Rotate the sectors on top of each other |
0c24ba98 | 778 | if (fSimpleSim) { |
779 | rot[0] = pos[0]; | |
780 | rot[1] = pos[1]; | |
781 | rot[2] = pos[2]; | |
782 | } | |
783 | else { | |
784 | fGeo->Rotate(detector,pos,rot); | |
785 | } | |
e23fbb27 | 786 | |
787 | // The driftlength. It is negative if the hit is in the | |
788 | // amplification region. | |
789 | Float_t driftlength = time0 - rot[0]; | |
790 | ||
791 | // Take also the drift in the amplification region into account | |
792 | // The drift length is at the moment still the same, regardless of | |
793 | // the position relativ to the wire. This non-isochronity needs still | |
794 | // to be implemented. | |
795 | Float_t driftlengthL = TMath::Abs(driftlength + kAmWidth); | |
4487dad0 | 796 | if (fPar->ExBOn()) driftlengthL /= TMath::Sqrt(fPar->GetLorentzFactor()); |
e23fbb27 | 797 | |
798 | // Loop over all electrons of this hit | |
799 | // TR photons produce hits with negative charge | |
800 | Int_t nEl = ((Int_t) TMath::Abs(q)); | |
801 | for (Int_t iEl = 0; iEl < nEl; iEl++) { | |
802 | ||
803 | xyz[0] = rot[0]; | |
804 | xyz[1] = rot[1]; | |
805 | xyz[2] = rot[2]; | |
806 | ||
807 | // Electron attachment | |
4487dad0 | 808 | if (fPar->ElAttachOn()) { |
e23fbb27 | 809 | if (gRandom->Rndm() < (driftlengthL * elAttachProp)) |
810 | continue; | |
811 | } | |
812 | ||
813 | // Apply the diffusion smearing | |
4487dad0 | 814 | if (fPar->DiffusionOn()) { |
815 | if (!(fPar->Diffusion(driftlengthL,xyz))) continue; | |
e23fbb27 | 816 | } |
f7336fa3 | 817 | |
e23fbb27 | 818 | // Apply E x B effects (depends on drift direction) |
4487dad0 | 819 | if (fPar->ExBOn()) { |
820 | if (!(fPar->ExB(driftlength+kAmWidth,xyz))) continue; | |
e23fbb27 | 821 | } |
793ff80c | 822 | |
e23fbb27 | 823 | // The electron position after diffusion and ExB in pad coordinates |
824 | // The pad row (z-direction) | |
825 | Float_t rowDist = xyz[2] - row0; | |
826 | Int_t rowE = ((Int_t) (rowDist * divideRow)); | |
827 | if ((rowE < 0) || (rowE >= nRowMax)) continue; | |
828 | Float_t rowOffset = ((((Float_t) rowE) + 0.5) * rowPadSize) - rowDist; | |
829 | ||
830 | // The pad column (rphi-direction) | |
4487dad0 | 831 | Float_t col0tilt = fPar->Col0Tilted(col0,rowOffset,plane); |
e23fbb27 | 832 | Float_t colDist = xyz[1] - col0tilt; |
833 | Int_t colE = ((Int_t) (colDist * divideCol)); | |
834 | if ((colE < 0) || (colE >= nColMax)) continue; | |
835 | Float_t colOffset = ((((Float_t) colE) + 0.5) * colPadSize) - colDist; | |
836 | ||
837 | // The time bin (negative for hits in the amplification region) | |
838 | // In the amplification region the electrons drift from both sides | |
839 | // to the middle (anode wire plane) | |
840 | Float_t timeDist = time0 - xyz[0]; | |
841 | Float_t timeOffset = 0; | |
842 | Int_t timeE = 0; | |
843 | if (timeDist > 0) { | |
844 | // The time bin | |
845 | timeE = ((Int_t) (timeDist * divideTime)); | |
846 | // The distance of the position to the middle of the timebin | |
847 | timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) - timeDist; | |
848 | } | |
849 | else { | |
850 | // Difference between half of the amplification gap width and | |
851 | // the distance to the anode wire | |
852 | Float_t anodeDist = kAmWidth - TMath::Abs(timeDist + kAmWidth); | |
853 | // The time bin | |
854 | timeE = -1 * (((Int_t ) (anodeDist * divideTime)) + 1); | |
855 | // The distance of the position to the middle of the timebin | |
856 | timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) + anodeDist; | |
857 | } | |
872a7aba | 858 | |
e23fbb27 | 859 | // Apply the gas gain including fluctuations |
860 | Float_t ggRndm = 0.0; | |
861 | do { | |
862 | ggRndm = gRandom->Rndm(); | |
863 | } while (ggRndm <= 0); | |
4487dad0 | 864 | Int_t signal = (Int_t) (-fPar->GetGasGain() * TMath::Log(ggRndm)); |
e23fbb27 | 865 | |
866 | // Apply the pad response | |
4487dad0 | 867 | if (fPar->PRFOn()) { |
e23fbb27 | 868 | // The distance of the electron to the center of the pad |
869 | // in units of pad width | |
870 | Float_t dist = - colOffset * divideCol; | |
4487dad0 | 871 | if (!(fPar->PadResponse(signal,dist,plane,padSignal))) continue; |
793ff80c | 872 | } |
e23fbb27 | 873 | else { |
874 | padSignal[0] = 0.0; | |
875 | padSignal[1] = signal; | |
876 | padSignal[2] = 0.0; | |
877 | } | |
878 | ||
879 | // Sample the time response inside the drift region | |
880 | // + additional time bins before and after. | |
881 | // The sampling is done always in the middle of the time bin | |
882 | for (Int_t iTimeBin = TMath::Max(timeE-timeTRDbeg, -nTimeBefore) | |
883 | ;iTimeBin < TMath::Min(timeE+timeTRDend,nTimeMax+nTimeAfter ) | |
884 | ;iTimeBin++) { | |
885 | ||
886 | // Apply the time response | |
887 | Float_t timeResponse = 1.0; | |
888 | Float_t crossTalk = 0.0; | |
889 | Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset; | |
4487dad0 | 890 | if (fPar->TRFOn()) { |
891 | timeResponse = fPar->TimeResponse(time); | |
e23fbb27 | 892 | } |
4487dad0 | 893 | if (fPar->CTOn()) { |
894 | crossTalk = fPar->CrossTalk(time); | |
e23fbb27 | 895 | } |
896 | ||
897 | signalOld[0] = 0.0; | |
898 | signalOld[1] = 0.0; | |
899 | signalOld[2] = 0.0; | |
f7336fa3 | 900 | |
e23fbb27 | 901 | for (iPad = 0; iPad < kNpad; iPad++) { |
902 | ||
903 | Int_t colPos = colE + iPad - 1; | |
904 | if (colPos < 0) continue; | |
905 | if (colPos >= nColMax) break; | |
906 | ||
907 | // Add the signals | |
908 | // Note: The time bin number is shifted by nTimeBefore to avoid negative | |
909 | // time bins. This has to be subtracted later. | |
910 | Int_t iCurrentTimeBin = iTimeBin + nTimeBefore; | |
911 | signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin); | |
912 | if( colPos != colE ) { | |
913 | signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk); | |
914 | } | |
915 | else { | |
916 | signalOld[iPad] += padSignal[iPad] * timeResponse; | |
917 | } | |
918 | signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]); | |
919 | ||
920 | // Store the track index in the dictionary | |
921 | // Note: We store index+1 in order to allow the array to be compressed | |
0c24ba98 | 922 | if ((signalOld[iPad] > 0) && (!fSimpleSim)) { |
e23fbb27 | 923 | for (iDict = 0; iDict < kNDict; iDict++) { |
924 | Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE | |
925 | ,colPos | |
926 | ,iCurrentTimeBin); | |
927 | if (oldTrack == track+1) break; | |
928 | if (oldTrack == 0) { | |
929 | dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1); | |
930 | break; | |
931 | } | |
71d9fa7b | 932 | } |
933 | } | |
872a7aba | 934 | |
e23fbb27 | 935 | } // Loop: pads |
f7336fa3 | 936 | |
e23fbb27 | 937 | } // Loop: time bins |
f7336fa3 | 938 | |
e23fbb27 | 939 | } // Loop: electrons of a single hit |
f7336fa3 | 940 | |
e23fbb27 | 941 | } // If: detector and test hit |
f7336fa3 | 942 | |
e23fbb27 | 943 | hit = (AliTRDhit *) fTRD->NextHit(); |
f7336fa3 | 944 | |
e23fbb27 | 945 | } // Loop: hits of one primary track |
946 | ||
947 | } // Loop: primary tracks | |
948 | ||
949 | if (fDebug > 0) { | |
950 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 951 | printf("Finished analyzing %d hits\n",countHits); |
952 | } | |
793ff80c | 953 | |
0c24ba98 | 954 | // The coupling factor |
955 | Float_t coupling = fPar->GetPadCoupling() | |
956 | * fPar->GetTimeCoupling(); | |
957 | ||
958 | // The conversion factor | |
959 | Float_t convert = kEl2fC | |
960 | * fPar->GetChipGain(); | |
6244debe | 961 | |
793ff80c | 962 | // Loop through all chambers to finalize the digits |
0c24ba98 | 963 | Int_t iDetBeg = 0; |
964 | Int_t iDetEnd = AliTRDgeometry::Ndet(); | |
965 | if (fSimpleSim) { | |
966 | iDetBeg = fSimpleDet; | |
967 | iDetEnd = iDetBeg + 1; | |
968 | } | |
969 | for (Int_t iDet = iDetBeg; iDet < iDetEnd; iDet++) { | |
793ff80c | 970 | |
872a7aba | 971 | Int_t plane = fGeo->GetPlane(iDet); |
972 | Int_t sector = fGeo->GetSector(iDet); | |
973 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 974 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
975 | Int_t nColMax = fPar->GetColMax(plane); | |
976 | Int_t nTimeMax = fPar->GetTimeMax(); | |
977 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
793ff80c | 978 | |
e23fbb27 | 979 | Double_t *inADC = new Double_t[nTimeTotal]; |
980 | Double_t *outADC = new Double_t[nTimeTotal]; | |
981 | ||
982 | if (fDebug > 0) { | |
983 | printf("<AliTRDdigitizer::MakeDigits> "); | |
793ff80c | 984 | printf("Digitization for chamber %d\n",iDet); |
985 | } | |
da581aea | 986 | |
793ff80c | 987 | // Add a container for the digits of this detector |
abaf1f1d | 988 | digits = fDigitsManager->GetDigits(iDet); |
793ff80c | 989 | // Allocate memory space for the digits buffer |
0c24ba98 | 990 | if (digits->GetNtime() == 0) { |
991 | digits->Allocate(nRowMax,nColMax,nTimeTotal); | |
992 | } | |
993 | else if (fSimpleSim) { | |
994 | digits->Clear(); | |
995 | } | |
996 | ||
793ff80c | 997 | // Get the signal container |
998 | signals = (AliTRDdataArrayF *) signalsArray->At(iDet); | |
999 | if (signals->GetNtime() == 0) { | |
1000 | // Create missing containers | |
872a7aba | 1001 | signals->Allocate(nRowMax,nColMax,nTimeTotal); |
793ff80c | 1002 | } |
1003 | else { | |
1004 | // Expand the container if neccessary | |
1005 | if (fCompress) signals->Expand(); | |
1006 | } | |
1007 | // Create the missing dictionary containers | |
0c24ba98 | 1008 | if (!fSimpleSim) { |
1009 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1010 | dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict); | |
1011 | if (dictionary[iDict]->GetNtime() == 0) { | |
1012 | dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
1013 | } | |
1014 | } | |
793ff80c | 1015 | } |
f7336fa3 | 1016 | |
793ff80c | 1017 | Int_t nDigits = 0; |
1018 | ||
6244debe | 1019 | // Don't create noise in detectors that are switched off |
1020 | if (CheckDetector(plane,chamber,sector)) { | |
1021 | ||
1022 | // Create the digits for this chamber | |
872a7aba | 1023 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
1024 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
6244debe | 1025 | |
e23fbb27 | 1026 | // Create summable digits |
1027 | if (fSDigits) { | |
6244debe | 1028 | |
e23fbb27 | 1029 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
872a7aba | 1030 | Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime); |
abaf1f1d | 1031 | signalAmp *= fSDigitsScale; |
e23fbb27 | 1032 | signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9); |
abaf1f1d | 1033 | Int_t adc = (Int_t) signalAmp; |
4487dad0 | 1034 | if (adc > 0) nDigits++; |
872a7aba | 1035 | digits->SetDataUnchecked(iRow,iCol,iTime,adc); |
c1e4b257 | 1036 | } |
6244debe | 1037 | |
e23fbb27 | 1038 | } |
1039 | // Create normal digits | |
1040 | else { | |
6244debe | 1041 | |
e23fbb27 | 1042 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
1043 | Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime); | |
0c24ba98 | 1044 | // Pad and time coupling |
1045 | signalAmp *= coupling; | |
7e582e9f | 1046 | // Add the noise, starting from minus ADC baseline in electrons |
1047 | Double_t baselineEl = fPar->GetADCbaseline() * (fPar->GetADCinRange() | |
1048 | / fPar->GetADCoutRange()) | |
1049 | / convert; | |
1050 | signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fPar->GetNoise()) | |
1051 | ,-baselineEl); | |
6244debe | 1052 | // Convert to mV |
1053 | signalAmp *= convert; | |
7e582e9f | 1054 | // Add ADC baseline in mV |
1055 | signalAmp += fPar->GetADCbaseline() * (fPar->GetADCinRange() | |
1056 | / fPar->GetADCoutRange()); | |
1057 | // Convert to ADC counts. Set the overflow-bit fADCoutRange if the | |
6244debe | 1058 | // signal is larger than fADCinRange |
1059 | Int_t adc = 0; | |
4487dad0 | 1060 | if (signalAmp >= fPar->GetADCinRange()) { |
1061 | adc = ((Int_t) fPar->GetADCoutRange()); | |
6244debe | 1062 | } |
1063 | else { | |
4487dad0 | 1064 | adc = ((Int_t) (signalAmp * (fPar->GetADCoutRange() |
1065 | / fPar->GetADCinRange()))); | |
6244debe | 1066 | } |
e23fbb27 | 1067 | inADC[iTime] = adc; |
1068 | outADC[iTime] = adc; | |
1069 | } | |
6244debe | 1070 | |
e23fbb27 | 1071 | // Apply the tail cancelation via the digital filter |
4487dad0 | 1072 | if (fPar->TCOn()) { |
1073 | DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp()); | |
e23fbb27 | 1074 | } |
1075 | ||
1076 | for (iTime = 0; iTime < nTimeTotal; iTime++) { | |
6244debe | 1077 | // Store the amplitude of the digit if above threshold |
4487dad0 | 1078 | if (outADC[iTime] > fPar->GetADCthreshold()) { |
e23fbb27 | 1079 | if (fDebug > 2) { |
1080 | printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n" | |
1081 | ,iRow,iCol,iTime,outADC[iTime]); | |
6244debe | 1082 | } |
1083 | nDigits++; | |
3583ac1a | 1084 | digits->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime])); |
6244debe | 1085 | } |
6244debe | 1086 | } |
1087 | ||
1088 | } | |
e23fbb27 | 1089 | |
6244debe | 1090 | } |
793ff80c | 1091 | } |
6244debe | 1092 | |
793ff80c | 1093 | } |
1094 | ||
1095 | // Compress the arrays | |
0c24ba98 | 1096 | if (!fSimpleSim) { |
1097 | digits->Compress(1,0); | |
1098 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1099 | dictionary[iDict]->Compress(1,0); | |
1100 | } | |
f7336fa3 | 1101 | |
0c24ba98 | 1102 | totalSizeDigits += digits->GetSize(); |
1103 | totalSizeDict0 += dictionary[0]->GetSize(); | |
1104 | totalSizeDict1 += dictionary[1]->GetSize(); | |
1105 | totalSizeDict2 += dictionary[2]->GetSize(); | |
f7336fa3 | 1106 | |
0c24ba98 | 1107 | Float_t nPixel = nRowMax * nColMax * nTimeMax; |
1108 | if (fDebug > 0) { | |
1109 | printf("<AliTRDdigitizer::MakeDigits> "); | |
1110 | printf("Found %d digits in detector %d (%3.0f).\n" | |
1111 | ,nDigits,iDet | |
1112 | ,100.0 * ((Float_t) nDigits) / nPixel); | |
1113 | } | |
1114 | ||
1115 | if (fCompress) signals->Compress(1,0); | |
abaf1f1d | 1116 | |
0c24ba98 | 1117 | } |
f7336fa3 | 1118 | |
e23fbb27 | 1119 | delete [] inADC; |
1120 | delete [] outADC; | |
1121 | ||
f7336fa3 | 1122 | } |
1123 | ||
0c24ba98 | 1124 | if (signalsArray) { |
1125 | delete signalsArray; | |
1126 | signalsArray = 0; | |
1127 | } | |
1128 | ||
e23fbb27 | 1129 | if (fDebug > 0) { |
1130 | printf("<AliTRDdigitizer::MakeDigits> "); | |
abaf1f1d | 1131 | printf("Total number of analyzed hits = %d\n",countHits); |
0c24ba98 | 1132 | if (!fSimpleSim) { |
1133 | printf("<AliTRDdigitizer::MakeDigits> "); | |
1134 | printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits | |
1135 | ,totalSizeDict0 | |
1136 | ,totalSizeDict1 | |
1137 | ,totalSizeDict2); | |
1138 | } | |
abaf1f1d | 1139 | } |
1140 | ||
1141 | return kTRUE; | |
1142 | ||
1143 | } | |
1144 | ||
1145 | //_____________________________________________________________________________ | |
1146 | void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man) | |
1147 | { | |
1148 | // | |
1149 | // Add a digits manager for s-digits to the input list. | |
1150 | // | |
1151 | ||
1152 | fSDigitsManagerList->Add(man); | |
1153 | ||
1154 | } | |
1155 | ||
b1113c6b | 1156 | //_____________________________________________________________________________ |
1157 | void AliTRDdigitizer::DeleteSDigitsManager() | |
1158 | { | |
1159 | // | |
1160 | // Removes digits manager from the input list. | |
1161 | // | |
1162 | ||
1163 | fSDigitsManagerList->Delete(); | |
1164 | ||
1165 | } | |
1166 | ||
abaf1f1d | 1167 | //_____________________________________________________________________________ |
1168 | Bool_t AliTRDdigitizer::ConvertSDigits() | |
1169 | { | |
1170 | // | |
1171 | // Converts s-digits to normal digits | |
1172 | // | |
1173 | ||
1174 | // Number of track dictionary arrays | |
1175 | const Int_t kNDict = AliTRDdigitsManager::kNDict; | |
1176 | ||
1177 | // Converts number of electrons to fC | |
1178 | const Double_t kEl2fC = 1.602E-19 * 1.0E15; | |
1179 | ||
1180 | Int_t iDict = 0; | |
e23fbb27 | 1181 | Int_t iRow; |
1182 | Int_t iCol; | |
1183 | Int_t iTime; | |
abaf1f1d | 1184 | |
4487dad0 | 1185 | if (!fPar) { |
1186 | fPar = new AliTRDparameter("TRDparameter","Standard parameter"); | |
1187 | if (fDebug > 0) { | |
1188 | printf("<AliTRDdigitizer::ConvertSDigits> "); | |
1189 | printf("Create the default parameter object\n"); | |
1190 | } | |
abaf1f1d | 1191 | } |
1192 | ||
1193 | Double_t sDigitsScale = 1.0 / GetSDigitsScale(); | |
4487dad0 | 1194 | Double_t noise = fPar->GetNoise(); |
1195 | Double_t padCoupling = fPar->GetPadCoupling(); | |
1196 | Double_t timeCoupling = fPar->GetTimeCoupling(); | |
1197 | Double_t chipGain = fPar->GetChipGain(); | |
0c24ba98 | 1198 | Double_t coupling = padCoupling * timeCoupling; |
1199 | Double_t convert = kEl2fC * chipGain; | |
4487dad0 | 1200 | Double_t adcInRange = fPar->GetADCinRange(); |
1201 | Double_t adcOutRange = fPar->GetADCoutRange(); | |
1202 | Int_t adcThreshold = fPar->GetADCthreshold(); | |
7e582e9f | 1203 | Int_t adcBaseline = fPar->GetADCbaseline(); |
abaf1f1d | 1204 | |
1205 | AliTRDdataArrayI *digitsIn; | |
1206 | AliTRDdataArrayI *digitsOut; | |
1207 | AliTRDdataArrayI *dictionaryIn[kNDict]; | |
1208 | AliTRDdataArrayI *dictionaryOut[kNDict]; | |
1209 | ||
1210 | // Loop through the detectors | |
1211 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
da581aea | 1212 | |
e23fbb27 | 1213 | if (fDebug > 0) { |
1214 | printf("<AliTRDdigitizer::ConvertSDigits> "); | |
abaf1f1d | 1215 | printf("Convert detector %d to digits.\n",iDet); |
1216 | } | |
1217 | ||
1218 | Int_t plane = fGeo->GetPlane(iDet); | |
1219 | Int_t sector = fGeo->GetSector(iDet); | |
1220 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 1221 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
1222 | Int_t nColMax = fPar->GetColMax(plane); | |
1223 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
abaf1f1d | 1224 | |
e23fbb27 | 1225 | Double_t *inADC = new Double_t[nTimeTotal]; |
1226 | Double_t *outADC = new Double_t[nTimeTotal]; | |
1227 | ||
abaf1f1d | 1228 | digitsIn = fSDigitsManager->GetDigits(iDet); |
1229 | digitsIn->Expand(); | |
1230 | digitsOut = fDigitsManager->GetDigits(iDet); | |
1231 | digitsOut->Allocate(nRowMax,nColMax,nTimeTotal); | |
1232 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1233 | dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict); | |
1234 | dictionaryIn[iDict]->Expand(); | |
1235 | dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict); | |
1236 | dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal); | |
1237 | } | |
1238 | ||
e23fbb27 | 1239 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
1240 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
abaf1f1d | 1241 | |
e23fbb27 | 1242 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
abaf1f1d | 1243 | Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
1244 | signal *= sDigitsScale; | |
0c24ba98 | 1245 | // Pad and time coupling |
1246 | signal *= coupling; | |
7e582e9f | 1247 | // Add the noise, starting from minus ADC baseline in electrons |
1248 | Double_t baselineEl = adcBaseline * (adcInRange / adcOutRange) / convert; | |
1249 | signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),-baselineEl); | |
abaf1f1d | 1250 | // Convert to mV |
1251 | signal *= convert; | |
7e582e9f | 1252 | // add ADC baseline in mV |
1253 | signal += adcBaseline * (adcInRange / adcOutRange); | |
abaf1f1d | 1254 | // Convert to ADC counts. Set the overflow-bit adcOutRange if the |
1255 | // signal is larger than adcInRange | |
1256 | Int_t adc = 0; | |
1257 | if (signal >= adcInRange) { | |
1258 | adc = ((Int_t) adcOutRange); | |
1259 | } | |
1260 | else { | |
1261 | adc = ((Int_t) (signal * (adcOutRange / adcInRange))); | |
1262 | } | |
e23fbb27 | 1263 | inADC[iTime] = adc; |
1264 | outADC[iTime] = adc; | |
1265 | } | |
1266 | ||
1267 | // Apply the tail cancelation via the digital filter | |
4487dad0 | 1268 | if (fPar->TCOn()) { |
1269 | DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp()); | |
e23fbb27 | 1270 | } |
1271 | ||
1272 | for (iTime = 0; iTime < nTimeTotal; iTime++) { | |
abaf1f1d | 1273 | // Store the amplitude of the digit if above threshold |
e23fbb27 | 1274 | if (outADC[iTime] > adcThreshold) { |
3583ac1a | 1275 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime])); |
e23fbb27 | 1276 | // Copy the dictionary |
1277 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1278 | Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1279 | dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track); | |
1280 | } | |
abaf1f1d | 1281 | } |
abaf1f1d | 1282 | } |
e23fbb27 | 1283 | |
abaf1f1d | 1284 | } |
1285 | } | |
1286 | ||
1287 | if (fCompress) { | |
1288 | digitsIn->Compress(1,0); | |
1289 | digitsOut->Compress(1,0); | |
1290 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1291 | dictionaryIn[iDict]->Compress(1,0); | |
1292 | dictionaryOut[iDict]->Compress(1,0); | |
1293 | } | |
1294 | } | |
1295 | ||
e23fbb27 | 1296 | delete [] inADC; |
1297 | delete [] outADC; | |
1298 | ||
abaf1f1d | 1299 | } |
f7336fa3 | 1300 | |
1301 | return kTRUE; | |
1302 | ||
1303 | } | |
1304 | ||
16bf9884 | 1305 | //_____________________________________________________________________________ |
abaf1f1d | 1306 | Bool_t AliTRDdigitizer::MergeSDigits() |
16bf9884 | 1307 | { |
1308 | // | |
abaf1f1d | 1309 | // Merges the input s-digits: |
1310 | // - The amplitude of the different inputs are summed up. | |
1311 | // - Of the track IDs from the input dictionaries only one is | |
1312 | // kept for each input. This works for maximal 3 different merged inputs. | |
16bf9884 | 1313 | // |
1314 | ||
abaf1f1d | 1315 | // Number of track dictionary arrays |
1316 | const Int_t kNDict = AliTRDdigitsManager::kNDict; | |
1317 | ||
4487dad0 | 1318 | if (!fPar) { |
1319 | fPar = new AliTRDparameter("TRDparameter","Standard parameter"); | |
1320 | if (fDebug > 0) { | |
1321 | printf("<AliTRDdigitizer::MergeSDigits> "); | |
1322 | printf("Create the default parameter object\n"); | |
1323 | } | |
1324 | } | |
1325 | ||
abaf1f1d | 1326 | Int_t iDict = 0; |
e23fbb27 | 1327 | Int_t jDict = 0; |
abaf1f1d | 1328 | |
1329 | AliTRDdataArrayI *digitsA; | |
1330 | AliTRDdataArrayI *digitsB; | |
1331 | AliTRDdataArrayI *dictionaryA[kNDict]; | |
1332 | AliTRDdataArrayI *dictionaryB[kNDict]; | |
1333 | ||
1334 | // Get the first s-digits | |
1335 | fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First(); | |
1336 | if (!fSDigitsManager) return kFALSE; | |
1337 | ||
1338 | // Loop through the other sets of s-digits | |
1339 | AliTRDdigitsManager *mergeSDigitsManager; | |
1340 | mergeSDigitsManager = (AliTRDdigitsManager *) | |
1341 | fSDigitsManagerList->After(fSDigitsManager); | |
1342 | ||
e23fbb27 | 1343 | if (fDebug > 0) { |
abaf1f1d | 1344 | if (mergeSDigitsManager) { |
e23fbb27 | 1345 | printf("<AliTRDdigitizer::MergeSDigits> "); |
1346 | printf("Merge %d input files.\n",fSDigitsManagerList->GetSize()); | |
abaf1f1d | 1347 | } |
1348 | else { | |
e23fbb27 | 1349 | printf("<AliTRDdigitizer::MergeSDigits> "); |
abaf1f1d | 1350 | printf("Only one input file.\n"); |
1351 | } | |
1352 | } | |
1353 | ||
1354 | Int_t iMerge = 0; | |
1355 | while (mergeSDigitsManager) { | |
1356 | ||
1357 | iMerge++; | |
1358 | ||
1359 | // Loop through the detectors | |
1360 | for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) { | |
1361 | ||
1362 | Int_t plane = fGeo->GetPlane(iDet); | |
1363 | Int_t sector = fGeo->GetSector(iDet); | |
1364 | Int_t chamber = fGeo->GetChamber(iDet); | |
4487dad0 | 1365 | Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector); |
1366 | Int_t nColMax = fPar->GetColMax(plane); | |
1367 | Int_t nTimeTotal = fPar->GetTimeTotal(); | |
abaf1f1d | 1368 | |
1369 | // Loop through the pixels of one detector and add the signals | |
1370 | digitsA = fSDigitsManager->GetDigits(iDet); | |
1371 | digitsB = mergeSDigitsManager->GetDigits(iDet); | |
1372 | digitsA->Expand(); | |
1373 | digitsB->Expand(); | |
1374 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1375 | dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict); | |
1376 | dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict); | |
1377 | dictionaryA[iDict]->Expand(); | |
1378 | dictionaryB[iDict]->Expand(); | |
1379 | } | |
1380 | ||
4487dad0 | 1381 | // Merge only detectors that contain a signal |
1382 | Bool_t doMerge = kTRUE; | |
1383 | if (fMergeSignalOnly) { | |
1384 | if (digitsA->GetOverThreshold(0) == 0) { | |
1385 | doMerge = kFALSE; | |
1386 | } | |
abaf1f1d | 1387 | } |
1388 | ||
4487dad0 | 1389 | if (doMerge) { |
abaf1f1d | 1390 | |
4487dad0 | 1391 | if (fDebug > 0) { |
1392 | printf("<AliTRDdigitizer::MergeSDigits> "); | |
1393 | printf("Merge detector %d of input no.%d\n",iDet,iMerge+1); | |
1394 | } | |
abaf1f1d | 1395 | |
4487dad0 | 1396 | for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) { |
1397 | for (Int_t iCol = 0; iCol < nColMax; iCol++ ) { | |
1398 | for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) { | |
1399 | ||
1400 | // Add the amplitudes of the summable digits | |
1401 | Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime); | |
1402 | Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime); | |
1403 | ampA += ampB; | |
1404 | digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA); | |
1405 | ||
1406 | // Add the mask to the track id if defined. | |
1407 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1408 | Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1409 | if ((fMasks) && (trackB > 0)) { | |
1410 | for (jDict = 0; jDict < kNDict; jDict++) { | |
1411 | Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime); | |
1412 | if (trackA == 0) { | |
1413 | trackA = trackB + fMasks[iMerge]; | |
1414 | dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA); | |
1415 | } | |
1416 | } | |
1417 | } | |
e23fbb27 | 1418 | } |
abaf1f1d | 1419 | |
4487dad0 | 1420 | } |
abaf1f1d | 1421 | } |
4487dad0 | 1422 | } |
1423 | ||
abaf1f1d | 1424 | } |
1425 | ||
1426 | if (fCompress) { | |
1427 | digitsA->Compress(1,0); | |
1428 | digitsB->Compress(1,0); | |
1429 | for (iDict = 0; iDict < kNDict; iDict++) { | |
1430 | dictionaryA[iDict]->Compress(1,0); | |
1431 | dictionaryB[iDict]->Compress(1,0); | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | } | |
1436 | ||
1437 | // The next set of s-digits | |
1438 | mergeSDigitsManager = (AliTRDdigitsManager *) | |
1439 | fSDigitsManagerList->After(mergeSDigitsManager); | |
1440 | ||
1441 | } | |
1442 | ||
16bf9884 | 1443 | return kTRUE; |
1444 | ||
1445 | } | |
1446 | ||
abaf1f1d | 1447 | //_____________________________________________________________________________ |
1448 | Bool_t AliTRDdigitizer::SDigits2Digits() | |
1449 | { | |
1450 | // | |
1451 | // Merges the input s-digits and converts them to normal digits | |
1452 | // | |
1453 | ||
1454 | if (!MergeSDigits()) return kFALSE; | |
1455 | ||
1456 | return ConvertSDigits(); | |
1457 | ||
1458 | } | |
1459 | ||
793ff80c | 1460 | //_____________________________________________________________________________ |
1461 | Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector) | |
1462 | { | |
1463 | // | |
1464 | // Checks whether a detector is enabled | |
1465 | // | |
1466 | ||
0c24ba98 | 1467 | if (fSimpleSim) return kTRUE; |
1468 | ||
793ff80c | 1469 | if ((fTRD->GetSensChamber() >= 0) && |
1470 | (fTRD->GetSensChamber() != chamber)) return kFALSE; | |
1471 | if ((fTRD->GetSensPlane() >= 0) && | |
c1e4b257 | 1472 | (fTRD->GetSensPlane() != plane)) return kFALSE; |
793ff80c | 1473 | if ( fTRD->GetSensSector() >= 0) { |
1474 | Int_t sens1 = fTRD->GetSensSector(); | |
1475 | Int_t sens2 = sens1 + fTRD->GetSensSectorRange(); | |
1476 | sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect())) | |
1477 | * AliTRDgeometry::Nsect(); | |
1478 | if (sens1 < sens2) { | |
1479 | if ((sector < sens1) || (sector >= sens2)) return kFALSE; | |
1480 | } | |
1481 | else { | |
1482 | if ((sector < sens1) && (sector >= sens2)) return kFALSE; | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | return kTRUE; | |
1487 | ||
1488 | } | |
1489 | ||
f7336fa3 | 1490 | //_____________________________________________________________________________ |
0a29d0f1 | 1491 | Bool_t AliTRDdigitizer::WriteDigits() const |
f7336fa3 | 1492 | { |
1493 | // | |
1494 | // Writes out the TRD-digits and the dictionaries | |
1495 | // | |
1496 | ||
da581aea | 1497 | // Store the digits and the dictionary in the tree |
abaf1f1d | 1498 | return fDigitsManager->WriteDigits(); |
f7336fa3 | 1499 | |
1500 | } | |
793ff80c | 1501 | |
e23fbb27 | 1502 | //_____________________________________________________________________________ |
1503 | void AliTRDdigitizer::DeConvExp(Double_t *source, Double_t *target | |
1504 | , Int_t n, Int_t nexp) | |
1505 | { | |
1506 | // | |
1507 | // Does the deconvolution by the digital filter. | |
1508 | // | |
1509 | // Author: Marcus Gutfleisch, KIP Heidelberg | |
1510 | // Optimized for: New TRF from Venelin Angelov, simulated with CADENCE | |
1511 | // Pad-ground capacitance = 25 pF | |
1512 | // Pad-pad cross talk capacitance = 6 pF | |
1513 | // For 10 MHz digitization, corresponding to 20 time bins | |
1514 | // in the drift region | |
1515 | // | |
1516 | ||
1517 | Double_t rates[2]; | |
1518 | Double_t coefficients[2]; | |
1519 | ||
1520 | /* initialize (coefficient = alpha, rates = lambda) */ | |
1521 | ||
1522 | if( nexp == 1 ) { | |
1523 | rates[0] = 0.466998; | |
1524 | /* no rescaling */ | |
1525 | coefficients[0] = 1.0; | |
1526 | } | |
1527 | if( nexp == 2 ) { | |
1528 | rates[0] = 0.8988162; | |
1529 | coefficients[0] = 0.11392069; | |
1530 | rates[1] = 0.3745688; | |
1531 | coefficients[1] = 0.8860793; | |
1532 | /* no rescaling */ | |
1533 | Float_t sumc = coefficients[0]+coefficients[1]; | |
1534 | coefficients[0] /= sumc; | |
1535 | coefficients[1] /= sumc; | |
1536 | } | |
1537 | ||
1538 | Int_t i, k; | |
1539 | Double_t reminder[2]; | |
1540 | Double_t correction, result; | |
1541 | ||
1542 | /* attention: computation order is important */ | |
1543 | correction=0.0; | |
1544 | for ( k = 0; k < nexp; k++ ) reminder[k]=0.0; | |
1545 | ||
1546 | for ( i = 0; i < n; i++ ) { | |
1547 | result = ( source[i] - correction ); /* no rescaling */ | |
1548 | target[i] = result; | |
1549 | ||
1550 | for ( k = 0; k < nexp; k++ ) reminder[k] = rates[k] | |
1551 | * ( reminder[k] + coefficients[k] * result); | |
1552 | ||
1553 | correction=0.0; | |
1554 | for ( k = 0; k < nexp; k++ ) correction += reminder[k]; | |
1555 | } | |
1556 | ||
1557 | } | |
1558 | ||
8e64dd77 | 1559 | //_____________________________________________________________________________ |
88cb7938 | 1560 | void AliTRDdigitizer::InitOutput(Int_t iEvent) |
8e64dd77 | 1561 | { |
1562 | // | |
1563 | // Initializes the output branches | |
1564 | // | |
1565 | ||
1566 | fEvent = iEvent; | |
88cb7938 | 1567 | |
1568 | if (!fRunLoader) | |
1569 | { | |
1570 | Error("InitOutput","Run Loader is NULL"); | |
1571 | return; | |
1572 | } | |
1573 | AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); | |
1574 | if (!loader) | |
1575 | { | |
1576 | Error("Open","Can not get TRD loader from Run Loader"); | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | TTree* tree = 0; | |
1581 | ||
1582 | if (fSDigits) | |
1583 | { | |
1584 | //if we produce SDigits | |
1585 | tree = loader->TreeS(); | |
1586 | if (!tree) | |
1587 | { | |
1588 | loader->MakeTree("S"); | |
1589 | tree = loader->TreeS(); | |
1590 | } | |
1591 | } | |
1592 | else | |
1593 | {//if we produce Digits | |
1594 | tree = loader->TreeD(); | |
1595 | if (!tree) | |
1596 | { | |
1597 | loader->MakeTree("D"); | |
1598 | tree = loader->TreeD(); | |
1599 | } | |
1600 | } | |
1601 | fDigitsManager->SetEvent(iEvent); | |
1602 | fDigitsManager->MakeBranch(tree); | |
8e64dd77 | 1603 | |
1604 | } |