Removed the QA checker mechanism
[u/mrichter/AliRoot.git] / TRD / AliTRDdigitizer.cxx
CommitLineData
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
75ClassImp(AliTRDdigitizer)
76
77//_____________________________________________________________________________
85cbec76 78AliTRDdigitizer::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//_____________________________________________________________________________
104AliTRDdigitizer::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//_____________________________________________________________________________
135AliTRDdigitizer::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//_____________________________________________________________________________
164AliTRDdigitizer::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
192//_____________________________________________________________________________
73ae7b59 193AliTRDdigitizer::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
203//_____________________________________________________________________________
f7336fa3 204AliTRDdigitizer::~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
47b5729a 216 fSDigitsManager = 0;
f7336fa3 217
abaf1f1d 218 if (fSDigitsManagerList) {
47b5729a 219 fSDigitsManagerList->Delete();
abaf1f1d 220 delete fSDigitsManagerList;
4487dad0 221 fSDigitsManagerList = 0;
e23fbb27 222 }
223
224 if (fMasks) {
225 delete [] fMasks;
226 fMasks = 0;
227 }
228
f7336fa3 229}
230
231//_____________________________________________________________________________
dd9a6ee3 232AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
233{
234 //
235 // Assignment operator
236 //
237
238 if (this != &d) ((AliTRDdigitizer &) d).Copy(*this);
239 return *this;
240
241}
242
243//_____________________________________________________________________________
244void AliTRDdigitizer::Copy(TObject &d)
8230f242 245{
246 //
247 // Copy function
248 //
249
85a5290f 250 ((AliTRDdigitizer &) d).fRunLoader = 0;
4487dad0 251 ((AliTRDdigitizer &) d).fDigitsManager = 0;
85a5290f 252 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
253 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
4487dad0 254 ((AliTRDdigitizer &) d).fTRD = 0;
255 ((AliTRDdigitizer &) d).fGeo = 0;
4487dad0 256 ((AliTRDdigitizer &) d).fPar = 0;
85a5290f 257 ((AliTRDdigitizer &) d).fEvent = 0;
258 ((AliTRDdigitizer &) d).fMasks = 0;
abaf1f1d 259 ((AliTRDdigitizer &) d).fCompress = fCompress;
e23fbb27 260 ((AliTRDdigitizer &) d).fDebug = fDebug ;
abaf1f1d 261 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
262 ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale;
4487dad0 263 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
0c24ba98 264 ((AliTRDdigitizer &) d).fSimpleSim = fSimpleSim;
265 ((AliTRDdigitizer &) d).fSimpleDet = fSimpleDet;
266
e23fbb27 267}
268
269//_____________________________________________________________________________
e23fbb27 270void AliTRDdigitizer::Exec(Option_t* option)
271{
272 //
273 // Executes the merging
274 //
275
276 Int_t iInput;
277
278 AliTRDdigitsManager *sdigitsManager;
279
280 TString optionString = option;
281 if (optionString.Contains("deb")) {
282 fDebug = 1;
283 if (optionString.Contains("2")) {
284 fDebug = 2;
285 }
286 printf("<AliTRDdigitizer::Exec> ");
287 printf("Called with debug option %d\n",fDebug);
288 }
289
cec4059b 290 // The AliRoot file is already connected by the manager
88cb7938 291 AliRunLoader* inrl;
292
293 if (gAlice)
294 {
4487dad0 295 if (fDebug > 0) {
296 printf("<AliTRDdigitizer::Exec> ");
297 printf("AliRun object found on file.\n");
298 }
88cb7938 299 }
4487dad0 300 else {
88cb7938 301 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
302 inrl->LoadgAlice();
303 gAlice = inrl->GetAliRun();
304 if (!gAlice)
305 {
306 printf("<AliTRDdigitizer::Exec> ");
307 printf("Could not find AliRun object.\n");
308 return;
309 }
4487dad0 310 }
cec4059b 311
e23fbb27 312 Int_t nInput = fManager->GetNinputs();
313 fMasks = new Int_t[nInput];
314 for (iInput = 0; iInput < nInput; iInput++) {
315 fMasks[iInput] = fManager->GetMask(iInput);
316 }
e23fbb27 317
318 // Initialization
e23fbb27 319
67c67368 320 AliRunLoader* orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
321 if (InitDetector()) {
322 AliLoader* ogime = orl->GetLoader("TRDLoader");
323
324 TTree* tree = 0;
325 if (fSDigits)
326 {
327 //if we produce SDigits
328 tree = ogime->TreeS();
329 if (!tree)
330 {
331 ogime->MakeTree("S");
332 tree = ogime->TreeS();
333 }
334 }
335 else
336 {//if we produce Digits
337 tree = ogime->TreeD();
338 if (!tree)
339 {
340 ogime->MakeTree("D");
341 tree = ogime->TreeD();
342 }
343 }
344 MakeBranch(tree);
345 }
346
e23fbb27 347 for (iInput = 0; iInput < nInput; iInput++) {
348
349 if (fDebug > 0) {
350 printf("<AliTRDdigitizer::Exec> ");
351 printf("Add input stream %d\n",iInput);
352 }
353
c57e2264 354 // check if the input tree exists
88cb7938 355 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
356 AliLoader* gime = inrl->GetLoader("TRDLoader");
357
358 TTree * treees = gime->TreeS();
359 if (treees == 0x0)
360 {
361 if (gime->LoadSDigits())
362 {
363 Error("Exec","Error Occured while loading S. Digits for input %d.",iInput);
364 return;
365 }
366 treees = gime->TreeS();
367 }
368
369 if (treees == 0x0) {
c57e2264 370 printf("<AliTRDdigitizer::Exec> ");
371 printf("Input stream %d does not exist\n",iInput);
372 return;
373 }
374
e23fbb27 375 // Read the s-digits via digits manager
376 sdigitsManager = new AliTRDdigitsManager();
377 sdigitsManager->SetDebug(fDebug);
378 sdigitsManager->SetSDigits(kTRUE);
88cb7938 379
380 AliRunLoader* rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
381 AliLoader* gimme = rl->GetLoader("TRDLoader");
382 if (!gimme->TreeS()) gimme->LoadSDigits();
383 sdigitsManager->ReadDigits(gimme->TreeS());
e23fbb27 384
385 // Add the s-digits to the input list
386 AddSDigitsManager(sdigitsManager);
387
388 }
389
390 // Convert the s-digits to normal digits
391 if (fDebug > 0) {
392 printf("<AliTRDdigitizer::Exec> ");
393 printf("Do the conversion\n");
394 }
395 SDigits2Digits();
396
397 // Store the digits
398 if (fDebug > 0) {
399 printf("<AliTRDdigitizer::Exec> ");
400 printf("Write the digits\n");
401 }
88cb7938 402
e23fbb27 403 fDigitsManager->WriteDigits();
88cb7938 404
67c67368 405 //Write parameters
406 orl->CdGAFile();
bdbb05bb 407 if (!gFile->Get("TRDparameter")) GetParameter()->Write();
67c67368 408
e23fbb27 409 if (fDebug > 0) {
410 printf("<AliTRDdigitizer::Exec> ");
411 printf("Done\n");
412 }
413
b1113c6b 414 DeleteSDigitsManager();
415
e23fbb27 416}
417
418//_____________________________________________________________________________
e23fbb27 419Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
f7336fa3 420{
421 //
422 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
423 //
424
425 // Connect the AliRoot file containing Geometry, Kine, and Hits
88cb7938 426
f540341d 427
e191bb57 428 TString evfoldname = AliConfig::GetDefaultEventFolderName();
f540341d 429 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
430 if (!fRunLoader)
e191bb57 431 fRunLoader = AliRunLoader::Open(file,AliConfig::GetDefaultEventFolderName(),
f540341d 432 "UPDATE");
88cb7938 433
434 if (!fRunLoader)
435 {
436 Error("Open","Can not open session for file %s.",file);
437 return kFALSE;
438 }
439
f540341d 440 if (!fRunLoader->GetAliRun()) fRunLoader->LoadgAlice();
88cb7938 441 gAlice = fRunLoader->GetAliRun();
442
da581aea 443 if (gAlice) {
e23fbb27 444 if (fDebug > 0) {
445 printf("<AliTRDdigitizer::Open> ");
abaf1f1d 446 printf("AliRun object found on file.\n");
447 }
da581aea 448 }
449 else {
e23fbb27 450 printf("<AliTRDdigitizer::Open> ");
da581aea 451 printf("Could not find AliRun object.\n");
452 return kFALSE;
453 }
f7336fa3 454
455 fEvent = nEvent;
456
457 // Import the Trees for the event nEvent in the file
88cb7938 458 fRunLoader->GetEvent(fEvent);
459
460 AliLoader* loader = fRunLoader->GetLoader("TRDLoader");
461 if (!loader)
462 {
463 Error("Open","Can not get TRD loader from Run Loader");
464 return kFALSE;
465 }
466
abaf1f1d 467 if (InitDetector()) {
88cb7938 468 TTree* tree = 0;
469 if (fSDigits)
470 {
471 //if we produce SDigits
472 tree = loader->TreeS();
473 if (!tree)
474 {
475 loader->MakeTree("S");
476 tree = loader->TreeS();
477 }
478 }
479 else
480 {//if we produce Digits
88cb7938 481 if (!tree)
482 {
483 loader->MakeTree("D");
484 tree = loader->TreeD();
485 }
486 }
487 return MakeBranch(tree);
abaf1f1d 488 }
489 else {
490 return kFALSE;
491 }
793ff80c 492
493}
494
495//_____________________________________________________________________________
496Bool_t AliTRDdigitizer::InitDetector()
497{
498 //
499 // Sets the pointer to the TRD detector and the geometry
500 //
501
dd9a6ee3 502 // Get the pointer to the detector class and check for version 1
4487dad0 503 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
cec4059b 504 if (!fTRD) {
505 printf("<AliTRDdigitizer::InitDetector> ");
506 printf("No TRD module found\n");
507 exit(1);
508 }
dd9a6ee3 509 if (fTRD->IsVersion() != 1) {
e23fbb27 510 printf("<AliTRDdigitizer::InitDetector> ");
dd9a6ee3 511 printf("TRD must be version 1 (slow simulator).\n");
512 exit(1);
513 }
514
515 // Get the geometry
516 fGeo = fTRD->GetGeometry();
e23fbb27 517 if (fDebug > 0) {
518 printf("<AliTRDdigitizer::InitDetector> ");
abaf1f1d 519 printf("Geometry version %d\n",fGeo->IsVersion());
520 }
dd9a6ee3 521
abaf1f1d 522 // Create a digits manager
47b5729a 523 delete fDigitsManager;
abaf1f1d 524 fDigitsManager = new AliTRDdigitsManager();
525 fDigitsManager->SetSDigits(fSDigits);
526 fDigitsManager->CreateArrays();
527 fDigitsManager->SetEvent(fEvent);
e23fbb27 528 fDigitsManager->SetDebug(fDebug);
abaf1f1d 529
530 // The list for the input s-digits manager to be merged
47b5729a 531 if (fSDigitsManagerList) {
532 fSDigitsManagerList->Delete();
533 } else {
534 fSDigitsManagerList = new TList();
535 }
abaf1f1d 536
4487dad0 537 return kTRUE;
f7336fa3 538
539}
540
541//_____________________________________________________________________________
88cb7938 542Bool_t AliTRDdigitizer::MakeBranch(TTree* tree) const
6244debe 543{
abaf1f1d 544 //
545 // Create the branches for the digits array
6244debe 546 //
547
88cb7938 548 return fDigitsManager->MakeBranch(tree);
6244debe 549
550}
551
552//_____________________________________________________________________________
f7336fa3 553Bool_t AliTRDdigitizer::MakeDigits()
554{
555 //
872a7aba 556 // Creates digits.
f7336fa3 557 //
558
f7336fa3 559 ///////////////////////////////////////////////////////////////
560 // Parameter
561 ///////////////////////////////////////////////////////////////
562
563 // Converts number of electrons to fC
872a7aba 564 const Double_t kEl2fC = 1.602E-19 * 1.0E15;
f7336fa3 565
566 ///////////////////////////////////////////////////////////////
567
793ff80c 568 // Number of pads included in the pad response
569 const Int_t kNpad = 3;
570
571 // Number of track dictionary arrays
dd56b762 572 const Int_t kNDict = AliTRDdigitsManager::kNDict;
793ff80c 573
872a7aba 574 // Half the width of the amplification region
575 const Float_t kAmWidth = AliTRDgeometry::AmThick() / 2.;
576
c3a4830f 577 Int_t iRow, iCol, iTime, iPad;
71d9fa7b 578 Int_t iDict = 0;
793ff80c 579 Int_t nBytes = 0;
f7336fa3 580
581 Int_t totalSizeDigits = 0;
582 Int_t totalSizeDict0 = 0;
583 Int_t totalSizeDict1 = 0;
584 Int_t totalSizeDict2 = 0;
585
872a7aba 586 Int_t timeTRDbeg = 0;
587 Int_t timeTRDend = 1;
588
589 Float_t pos[3];
590 Float_t rot[3];
591 Float_t xyz[3];
592 Float_t padSignal[kNpad];
593 Float_t signalOld[kNpad];
594
793ff80c 595 AliTRDdataArrayF *signals = 0;
596 AliTRDdataArrayI *digits = 0;
8230f242 597 AliTRDdataArrayI *dictionary[kNDict];
da581aea 598
4487dad0 599 // Create a default parameter class if none is defined
600 if (!fPar) {
601 fPar = new AliTRDparameter("TRDparameter","Standard TRD parameter");
602 if (fDebug > 0) {
603 printf("<AliTRDdigitizer::MakeDigits> ");
604 printf("Create the default parameter object\n");
605 }
606 }
607
793ff80c 608 // Create a container for the amplitudes
609 AliTRDsegmentArray *signalsArray
e23fbb27 610 = new AliTRDsegmentArray("AliTRDdataArrayF"
611 ,AliTRDgeometry::Ndet());
793ff80c 612
4487dad0 613 if (fPar->TRFOn()) {
614 timeTRDbeg = ((Int_t) (-fPar->GetTRFlo() / fPar->GetTimeBinSize())) - 1;
615 timeTRDend = ((Int_t) ( fPar->GetTRFhi() / fPar->GetTimeBinSize())) - 1;
e23fbb27 616 if (fDebug > 0) {
617 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 618 printf("Sample the TRF between -%d and %d\n",timeTRDbeg,timeTRDend);
619 }
da581aea 620 }
621
4487dad0 622 Float_t elAttachProp = fPar->GetElAttachProp() / 100.;
793ff80c 623
872a7aba 624 if (!fGeo) {
e23fbb27 625 printf("<AliTRDdigitizer::MakeDigits> ");
872a7aba 626 printf("No geometry defined\n");
627 return kFALSE;
628 }
629
e23fbb27 630 if (fDebug > 0) {
631 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 632 printf("Start creating digits.\n");
633 }
872a7aba 634
88cb7938 635 AliLoader* gimme = fRunLoader->GetLoader("TRDLoader");
636 if (!gimme->TreeH()) gimme->LoadHits();
637 TTree* hitTree = gimme->TreeH();
638 if (hitTree == 0x0)
639 {
640 Error("MakeDigits","Can not get TreeH");
641 return kFALSE;
642 }
643 fTRD->SetTreeAddress();
644
793ff80c 645 // Get the number of entries in the hit tree
646 // (Number of primary particles creating a hit somewhere)
0c24ba98 647 Int_t nTrack = 1;
648 if (!fSimpleSim) {
649 nTrack = (Int_t) hitTree->GetEntries();
650 if (fDebug > 0) {
651 printf("<AliTRDdigitizer::MakeDigits> ");
652 printf("Found %d primary particles\n",nTrack);
653 }
654 }
793ff80c 655
656 Int_t detectorOld = -1;
657 Int_t countHits = 0;
658
a328fff9 659 if (fDebug > 0) {
660 printf("<AliTRDdigitizer::MakeDigits> ");
661 printf("Driftvelocity = %.2f, Sampling = %.2fns\n",fPar->GetDriftVelocity(),
662 fPar->GetTimeBinSize() / fPar->GetDriftVelocity() * 1000.);
663 printf("<AliTRDdigitizer::MakeDigits> ");
664 printf("Gain = %d, Noise = %d\n",(Int_t)fPar->GetGasGain(),(Int_t)fPar->GetNoise());
665 if (fPar->TimeStructOn()) {
666 printf("<AliTRDdigitizer::MakeDigits> ");
667 printf("Time Structure of drift cells implemented.\n");
a328fff9 668 } else {
669 printf("<AliTRDdigitizer::MakeDigits> ");
670 printf("Constant drift velocity in drift cells.\n");
671 }
672 }
673
793ff80c 674 // Loop through all entries in the tree
675 for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) {
676
0c24ba98 677 if (!fSimpleSim) {
678 gAlice->ResetHits();
679 nBytes += hitTree->GetEvent(iTrack);
680 }
793ff80c 681
e23fbb27 682 // Loop through the TRD hits
683 Int_t iHit = 0;
684 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
685 while (hit) {
686
793ff80c 687 countHits++;
e23fbb27 688 iHit++;
689
690 pos[0] = hit->X();
691 pos[1] = hit->Y();
692 pos[2] = hit->Z();
693 Float_t q = hit->GetCharge();
694 Int_t track = hit->Track();
695 Int_t detector = hit->GetDetector();
696 Int_t plane = fGeo->GetPlane(detector);
697 Int_t sector = fGeo->GetSector(detector);
698 Int_t chamber = fGeo->GetChamber(detector);
4487dad0 699 Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
700 Int_t nColMax = fPar->GetColMax(plane);
701 Int_t nTimeMax = fPar->GetTimeMax();
702 Int_t nTimeBefore = fPar->GetTimeBefore();
703 Int_t nTimeAfter = fPar->GetTimeAfter();
704 Int_t nTimeTotal = fPar->GetTimeTotal();
705 Float_t row0 = fPar->GetRow0(plane,chamber,sector);
706 Float_t col0 = fPar->GetCol0(plane);
707 Float_t time0 = fPar->GetTime0(plane);
708 Float_t rowPadSize = fPar->GetRowPadSize(plane,chamber,sector);
709 Float_t colPadSize = fPar->GetColPadSize(plane);
710 Float_t timeBinSize = fPar->GetTimeBinSize();
872a7aba 711 Float_t divideRow = 1.0 / rowPadSize;
712 Float_t divideCol = 1.0 / colPadSize;
713 Float_t divideTime = 1.0 / timeBinSize;
793ff80c 714
e23fbb27 715 if (fDebug > 1) {
793ff80c 716 printf("Analyze hit no. %d ",iHit);
717 printf("-----------------------------------------------------------\n");
718 hit->Dump();
719 printf("plane = %d, sector = %d, chamber = %d\n"
720 ,plane,sector,chamber);
721 printf("nRowMax = %d, nColMax = %d, nTimeMax = %d\n"
722 ,nRowMax,nColMax,nTimeMax);
872a7aba 723 printf("nTimeBefore = %d, nTimeAfter = %d, nTimeTotal = %d\n"
724 ,nTimeBefore,nTimeAfter,nTimeTotal);
793ff80c 725 printf("row0 = %f, col0 = %f, time0 = %f\n"
726 ,row0,col0,time0);
c1e4b257 727 printf("rowPadSize = %f, colPadSize = %f, timeBinSize = %f\n"
728 ,rowPadSize,colPadSize,timeBinSize);
793ff80c 729 }
730
e23fbb27 731 // Don't analyze test hits and switched off detectors
732 if ((CheckDetector(plane,chamber,sector)) &&
733 (((Int_t) q) != 0)) {
dd56b762 734
e23fbb27 735 if (detector != detectorOld) {
e153aaf6 736
e23fbb27 737 if (fDebug > 1) {
738 printf("<AliTRDdigitizer::MakeDigits> ");
739 printf("Get new container. New det = %d, Old det = %d\n"
740 ,detector,detectorOld);
dd9a6ee3 741 }
e23fbb27 742 // Compress the old one if enabled
743 if ((fCompress) && (detectorOld > -1)) {
744 if (fDebug > 1) {
745 printf("<AliTRDdigitizer::MakeDigits> ");
746 printf("Compress the old container ...");
747 }
748 signals->Compress(1,0);
749 for (iDict = 0; iDict < kNDict; iDict++) {
750 dictionary[iDict]->Compress(1,0);
c1e4b257 751 }
e23fbb27 752 if (fDebug > 1) printf("done\n");
793ff80c 753 }
e23fbb27 754 // Get the new container
755 signals = (AliTRDdataArrayF *) signalsArray->At(detector);
756 if (signals->GetNtime() == 0) {
757 // Allocate a new one if not yet existing
758 if (fDebug > 1) {
759 printf("<AliTRDdigitizer::MakeDigits> ");
760 printf("Allocate a new container ... ");
761 }
762 signals->Allocate(nRowMax,nColMax,nTimeTotal);
793ff80c 763 }
0c24ba98 764 else if (fSimpleSim) {
765 // Clear an old one for the simple simulation
766 if (fDebug > 1) {
767 printf("<AliTRDdigitizer::MakeDigits> ");
768 printf("Clear a old container ... ");
769 }
770 signals->Clear();
771 }
793ff80c 772 else {
e23fbb27 773 // Expand an existing one
774 if (fCompress) {
775 if (fDebug > 1) {
776 printf("<AliTRDdigitizer::MakeDigits> ");
777 printf("Expand an existing container ... ");
778 }
779 signals->Expand();
780 }
793ff80c 781 }
e23fbb27 782 // The same for the dictionary
0c24ba98 783 if (!fSimpleSim) {
784 for (iDict = 0; iDict < kNDict; iDict++) {
785 dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict);
786 if (dictionary[iDict]->GetNtime() == 0) {
787 dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
788 }
789 else {
790 if (fCompress) dictionary[iDict]->Expand();
791 }
e23fbb27 792 }
793 }
794 if (fDebug > 1) printf("done\n");
795 detectorOld = detector;
793ff80c 796 }
797
e23fbb27 798 // Rotate the sectors on top of each other
0c24ba98 799 if (fSimpleSim) {
800 rot[0] = pos[0];
801 rot[1] = pos[1];
802 rot[2] = pos[2];
803 }
804 else {
805 fGeo->Rotate(detector,pos,rot);
806 }
e23fbb27 807
808 // The driftlength. It is negative if the hit is in the
809 // amplification region.
810 Float_t driftlength = time0 - rot[0];
811
812 // Take also the drift in the amplification region into account
e23fbb27 813 Float_t driftlengthL = TMath::Abs(driftlength + kAmWidth);
4487dad0 814 if (fPar->ExBOn()) driftlengthL /= TMath::Sqrt(fPar->GetLorentzFactor());
e23fbb27 815
816 // Loop over all electrons of this hit
817 // TR photons produce hits with negative charge
818 Int_t nEl = ((Int_t) TMath::Abs(q));
819 for (Int_t iEl = 0; iEl < nEl; iEl++) {
820
821 xyz[0] = rot[0];
822 xyz[1] = rot[1];
823 xyz[2] = rot[2];
824
a328fff9 825 // Stupid patch to take care of TR photons that are absorbed
826 // outside the chamber volume. A real fix would actually need
827 // a more clever implementation of the TR hit generation
828 Float_t zz = xyz[2] - row0;
829 if ((zz < 0.0) || (zz > rowPadSize*nRowMax)) {
830 if (iEl == 0) {
831 printf("<AliTRDdigitizer::MakeDigits> ");
832 printf("Hit outside of sensitive volume, row (Q = %d)\n",((Int_t) q));
833 }
834 continue;
835 }
836 Int_t tt = ((Int_t) (10*(driftlength + 2.0*kAmWidth)));
837 if (tt < 0) {
838 if (iEl == 0) {
839 printf("<AliTRDdigitizer::MakeDigits> ");
840 printf("Hit outside of sensitive volume, time (Q = %d)\n",((Int_t) q));
841 }
842 continue;
843 }
844
e23fbb27 845 // Electron attachment
4487dad0 846 if (fPar->ElAttachOn()) {
e23fbb27 847 if (gRandom->Rndm() < (driftlengthL * elAttachProp))
848 continue;
849 }
850
851 // Apply the diffusion smearing
4487dad0 852 if (fPar->DiffusionOn()) {
853 if (!(fPar->Diffusion(driftlengthL,xyz))) continue;
e23fbb27 854 }
f7336fa3 855
e23fbb27 856 // Apply E x B effects (depends on drift direction)
4487dad0 857 if (fPar->ExBOn()) {
858 if (!(fPar->ExB(driftlength+kAmWidth,xyz))) continue;
e23fbb27 859 }
793ff80c 860
a328fff9 861 // Apply the drift time correction
862 if (fPar->TimeStructOn()) {
863 // Get z-position with respect to anode wire:
864 Float_t Z = xyz[2] - row0 + fPar->GetAnodeWireOffset();
682619b9 865 Z -= ((Int_t)(2*Z))/2.;
866 if (Z>0.25) Z = 0.5-Z;
867 //if (Z>0.248) cout << Z << ": " << time0 - xyz[0] + kAmWidth << " -> ";
868 if (!(fPar->TimeStruct(driftlength+2*kAmWidth,Z,xyz))) continue;
869 //if (Z>0.248) cout << time0 - xyz[0] + kAmWidth << endl;
a328fff9 870 }
871
e23fbb27 872 // The electron position after diffusion and ExB in pad coordinates
873 // The pad row (z-direction)
874 Float_t rowDist = xyz[2] - row0;
875 Int_t rowE = ((Int_t) (rowDist * divideRow));
876 if ((rowE < 0) || (rowE >= nRowMax)) continue;
877 Float_t rowOffset = ((((Float_t) rowE) + 0.5) * rowPadSize) - rowDist;
878
879 // The pad column (rphi-direction)
4487dad0 880 Float_t col0tilt = fPar->Col0Tilted(col0,rowOffset,plane);
e23fbb27 881 Float_t colDist = xyz[1] - col0tilt;
882 Int_t colE = ((Int_t) (colDist * divideCol));
883 if ((colE < 0) || (colE >= nColMax)) continue;
884 Float_t colOffset = ((((Float_t) colE) + 0.5) * colPadSize) - colDist;
885
886 // The time bin (negative for hits in the amplification region)
887 // In the amplification region the electrons drift from both sides
888 // to the middle (anode wire plane)
889 Float_t timeDist = time0 - xyz[0];
890 Float_t timeOffset = 0;
891 Int_t timeE = 0;
892 if (timeDist > 0) {
893 // The time bin
894 timeE = ((Int_t) (timeDist * divideTime));
895 // The distance of the position to the middle of the timebin
896 timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) - timeDist;
897 }
898 else {
899 // Difference between half of the amplification gap width and
900 // the distance to the anode wire
901 Float_t anodeDist = kAmWidth - TMath::Abs(timeDist + kAmWidth);
902 // The time bin
903 timeE = -1 * (((Int_t ) (anodeDist * divideTime)) + 1);
904 // The distance of the position to the middle of the timebin
905 timeOffset = ((((Float_t) timeE) + 0.5) * timeBinSize) + anodeDist;
906 }
872a7aba 907
e23fbb27 908 // Apply the gas gain including fluctuations
909 Float_t ggRndm = 0.0;
910 do {
911 ggRndm = gRandom->Rndm();
912 } while (ggRndm <= 0);
4487dad0 913 Int_t signal = (Int_t) (-fPar->GetGasGain() * TMath::Log(ggRndm));
e23fbb27 914
915 // Apply the pad response
4487dad0 916 if (fPar->PRFOn()) {
e23fbb27 917 // The distance of the electron to the center of the pad
918 // in units of pad width
919 Float_t dist = - colOffset * divideCol;
4487dad0 920 if (!(fPar->PadResponse(signal,dist,plane,padSignal))) continue;
793ff80c 921 }
e23fbb27 922 else {
923 padSignal[0] = 0.0;
924 padSignal[1] = signal;
925 padSignal[2] = 0.0;
926 }
927
928 // Sample the time response inside the drift region
929 // + additional time bins before and after.
930 // The sampling is done always in the middle of the time bin
931 for (Int_t iTimeBin = TMath::Max(timeE-timeTRDbeg, -nTimeBefore)
932 ;iTimeBin < TMath::Min(timeE+timeTRDend,nTimeMax+nTimeAfter )
933 ;iTimeBin++) {
934
935 // Apply the time response
936 Float_t timeResponse = 1.0;
937 Float_t crossTalk = 0.0;
938 Float_t time = (iTimeBin - timeE) * timeBinSize + timeOffset;
4487dad0 939 if (fPar->TRFOn()) {
940 timeResponse = fPar->TimeResponse(time);
e23fbb27 941 }
4487dad0 942 if (fPar->CTOn()) {
943 crossTalk = fPar->CrossTalk(time);
e23fbb27 944 }
945
946 signalOld[0] = 0.0;
947 signalOld[1] = 0.0;
948 signalOld[2] = 0.0;
f7336fa3 949
e23fbb27 950 for (iPad = 0; iPad < kNpad; iPad++) {
951
952 Int_t colPos = colE + iPad - 1;
953 if (colPos < 0) continue;
954 if (colPos >= nColMax) break;
955
956 // Add the signals
957 // Note: The time bin number is shifted by nTimeBefore to avoid negative
958 // time bins. This has to be subtracted later.
959 Int_t iCurrentTimeBin = iTimeBin + nTimeBefore;
960 signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin);
961 if( colPos != colE ) {
962 signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk);
963 }
964 else {
965 signalOld[iPad] += padSignal[iPad] * timeResponse;
966 }
967 signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]);
968
969 // Store the track index in the dictionary
970 // Note: We store index+1 in order to allow the array to be compressed
0c24ba98 971 if ((signalOld[iPad] > 0) && (!fSimpleSim)) {
e23fbb27 972 for (iDict = 0; iDict < kNDict; iDict++) {
973 Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE
974 ,colPos
975 ,iCurrentTimeBin);
976 if (oldTrack == track+1) break;
977 if (oldTrack == 0) {
978 dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1);
979 break;
980 }
71d9fa7b 981 }
982 }
872a7aba 983
e23fbb27 984 } // Loop: pads
f7336fa3 985
e23fbb27 986 } // Loop: time bins
f7336fa3 987
e23fbb27 988 } // Loop: electrons of a single hit
f7336fa3 989
e23fbb27 990 } // If: detector and test hit
f7336fa3 991
e23fbb27 992 hit = (AliTRDhit *) fTRD->NextHit();
f7336fa3 993
e23fbb27 994 } // Loop: hits of one primary track
995
996 } // Loop: primary tracks
997
998 if (fDebug > 0) {
999 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 1000 printf("Finished analyzing %d hits\n",countHits);
1001 }
793ff80c 1002
0c24ba98 1003 // The coupling factor
1004 Float_t coupling = fPar->GetPadCoupling()
1005 * fPar->GetTimeCoupling();
1006
1007 // The conversion factor
1008 Float_t convert = kEl2fC
1009 * fPar->GetChipGain();
6244debe 1010
793ff80c 1011 // Loop through all chambers to finalize the digits
0c24ba98 1012 Int_t iDetBeg = 0;
1013 Int_t iDetEnd = AliTRDgeometry::Ndet();
1014 if (fSimpleSim) {
1015 iDetBeg = fSimpleDet;
1016 iDetEnd = iDetBeg + 1;
1017 }
1018 for (Int_t iDet = iDetBeg; iDet < iDetEnd; iDet++) {
793ff80c 1019
872a7aba 1020 Int_t plane = fGeo->GetPlane(iDet);
1021 Int_t sector = fGeo->GetSector(iDet);
1022 Int_t chamber = fGeo->GetChamber(iDet);
4487dad0 1023 Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
1024 Int_t nColMax = fPar->GetColMax(plane);
1025 Int_t nTimeMax = fPar->GetTimeMax();
1026 Int_t nTimeTotal = fPar->GetTimeTotal();
793ff80c 1027
e23fbb27 1028 Double_t *inADC = new Double_t[nTimeTotal];
1029 Double_t *outADC = new Double_t[nTimeTotal];
1030
1031 if (fDebug > 0) {
1032 printf("<AliTRDdigitizer::MakeDigits> ");
793ff80c 1033 printf("Digitization for chamber %d\n",iDet);
1034 }
da581aea 1035
793ff80c 1036 // Add a container for the digits of this detector
abaf1f1d 1037 digits = fDigitsManager->GetDigits(iDet);
793ff80c 1038 // Allocate memory space for the digits buffer
0c24ba98 1039 if (digits->GetNtime() == 0) {
1040 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1041 }
1042 else if (fSimpleSim) {
1043 digits->Clear();
1044 }
1045
793ff80c 1046 // Get the signal container
1047 signals = (AliTRDdataArrayF *) signalsArray->At(iDet);
1048 if (signals->GetNtime() == 0) {
1049 // Create missing containers
872a7aba 1050 signals->Allocate(nRowMax,nColMax,nTimeTotal);
793ff80c 1051 }
1052 else {
1053 // Expand the container if neccessary
1054 if (fCompress) signals->Expand();
1055 }
1056 // Create the missing dictionary containers
0c24ba98 1057 if (!fSimpleSim) {
1058 for (iDict = 0; iDict < kNDict; iDict++) {
1059 dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
1060 if (dictionary[iDict]->GetNtime() == 0) {
1061 dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
1062 }
1063 }
793ff80c 1064 }
f7336fa3 1065
793ff80c 1066 Int_t nDigits = 0;
1067
6244debe 1068 // Don't create noise in detectors that are switched off
1069 if (CheckDetector(plane,chamber,sector)) {
1070
1071 // Create the digits for this chamber
872a7aba 1072 for (iRow = 0; iRow < nRowMax; iRow++ ) {
1073 for (iCol = 0; iCol < nColMax; iCol++ ) {
6244debe 1074
e23fbb27 1075 // Create summable digits
1076 if (fSDigits) {
6244debe 1077
e23fbb27 1078 for (iTime = 0; iTime < nTimeTotal; iTime++) {
872a7aba 1079 Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
abaf1f1d 1080 signalAmp *= fSDigitsScale;
e23fbb27 1081 signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9);
abaf1f1d 1082 Int_t adc = (Int_t) signalAmp;
4487dad0 1083 if (adc > 0) nDigits++;
872a7aba 1084 digits->SetDataUnchecked(iRow,iCol,iTime,adc);
c1e4b257 1085 }
6244debe 1086
e23fbb27 1087 }
1088 // Create normal digits
1089 else {
6244debe 1090
e23fbb27 1091 for (iTime = 0; iTime < nTimeTotal; iTime++) {
1092 Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
0c24ba98 1093 // Pad and time coupling
1094 signalAmp *= coupling;
7e582e9f 1095 // Add the noise, starting from minus ADC baseline in electrons
1096 Double_t baselineEl = fPar->GetADCbaseline() * (fPar->GetADCinRange()
1097 / fPar->GetADCoutRange())
1098 / convert;
1099 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,fPar->GetNoise())
1100 ,-baselineEl);
6244debe 1101 // Convert to mV
1102 signalAmp *= convert;
7e582e9f 1103 // Add ADC baseline in mV
1104 signalAmp += fPar->GetADCbaseline() * (fPar->GetADCinRange()
1105 / fPar->GetADCoutRange());
1106 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
6244debe 1107 // signal is larger than fADCinRange
1108 Int_t adc = 0;
4487dad0 1109 if (signalAmp >= fPar->GetADCinRange()) {
1110 adc = ((Int_t) fPar->GetADCoutRange());
6244debe 1111 }
1112 else {
4487dad0 1113 adc = ((Int_t) (signalAmp * (fPar->GetADCoutRange()
1114 / fPar->GetADCinRange())));
6244debe 1115 }
e23fbb27 1116 inADC[iTime] = adc;
1117 outADC[iTime] = adc;
1118 }
6244debe 1119
e23fbb27 1120 // Apply the tail cancelation via the digital filter
4487dad0 1121 if (fPar->TCOn()) {
1122 DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp());
e23fbb27 1123 }
1124
1125 for (iTime = 0; iTime < nTimeTotal; iTime++) {
6244debe 1126 // Store the amplitude of the digit if above threshold
4487dad0 1127 if (outADC[iTime] > fPar->GetADCthreshold()) {
e23fbb27 1128 if (fDebug > 2) {
1129 printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n"
1130 ,iRow,iCol,iTime,outADC[iTime]);
6244debe 1131 }
1132 nDigits++;
3583ac1a 1133 digits->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime]));
6244debe 1134 }
6244debe 1135 }
1136
1137 }
e23fbb27 1138
6244debe 1139 }
793ff80c 1140 }
6244debe 1141
793ff80c 1142 }
1143
1144 // Compress the arrays
0c24ba98 1145 if (!fSimpleSim) {
1146 digits->Compress(1,0);
1147 for (iDict = 0; iDict < kNDict; iDict++) {
1148 dictionary[iDict]->Compress(1,0);
1149 }
f7336fa3 1150
0c24ba98 1151 totalSizeDigits += digits->GetSize();
1152 totalSizeDict0 += dictionary[0]->GetSize();
1153 totalSizeDict1 += dictionary[1]->GetSize();
1154 totalSizeDict2 += dictionary[2]->GetSize();
f7336fa3 1155
0c24ba98 1156 Float_t nPixel = nRowMax * nColMax * nTimeMax;
1157 if (fDebug > 0) {
1158 printf("<AliTRDdigitizer::MakeDigits> ");
1159 printf("Found %d digits in detector %d (%3.0f).\n"
1160 ,nDigits,iDet
1161 ,100.0 * ((Float_t) nDigits) / nPixel);
1162 }
1163
1164 if (fCompress) signals->Compress(1,0);
abaf1f1d 1165
0c24ba98 1166 }
f7336fa3 1167
e23fbb27 1168 delete [] inADC;
1169 delete [] outADC;
1170
f7336fa3 1171 }
1172
0c24ba98 1173 if (signalsArray) {
1174 delete signalsArray;
1175 signalsArray = 0;
1176 }
1177
e23fbb27 1178 if (fDebug > 0) {
1179 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 1180 printf("Total number of analyzed hits = %d\n",countHits);
0c24ba98 1181 if (!fSimpleSim) {
1182 printf("<AliTRDdigitizer::MakeDigits> ");
1183 printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits
1184 ,totalSizeDict0
1185 ,totalSizeDict1
1186 ,totalSizeDict2);
1187 }
abaf1f1d 1188 }
1189
1190 return kTRUE;
1191
1192}
1193
1194//_____________________________________________________________________________
1195void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
1196{
1197 //
1198 // Add a digits manager for s-digits to the input list.
1199 //
1200
1201 fSDigitsManagerList->Add(man);
1202
1203}
1204
1205//_____________________________________________________________________________
b1113c6b 1206void AliTRDdigitizer::DeleteSDigitsManager()
1207{
1208 //
1209 // Removes digits manager from the input list.
1210 //
1211
1212 fSDigitsManagerList->Delete();
1213
1214}
1215
1216//_____________________________________________________________________________
abaf1f1d 1217Bool_t AliTRDdigitizer::ConvertSDigits()
1218{
1219 //
1220 // Converts s-digits to normal digits
1221 //
1222
1223 // Number of track dictionary arrays
1224 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1225
1226 // Converts number of electrons to fC
1227 const Double_t kEl2fC = 1.602E-19 * 1.0E15;
1228
1229 Int_t iDict = 0;
e23fbb27 1230 Int_t iRow;
1231 Int_t iCol;
1232 Int_t iTime;
abaf1f1d 1233
4487dad0 1234 if (!fPar) {
1235 fPar = new AliTRDparameter("TRDparameter","Standard parameter");
1236 if (fDebug > 0) {
1237 printf("<AliTRDdigitizer::ConvertSDigits> ");
1238 printf("Create the default parameter object\n");
1239 }
abaf1f1d 1240 }
1241
1242 Double_t sDigitsScale = 1.0 / GetSDigitsScale();
4487dad0 1243 Double_t noise = fPar->GetNoise();
1244 Double_t padCoupling = fPar->GetPadCoupling();
1245 Double_t timeCoupling = fPar->GetTimeCoupling();
1246 Double_t chipGain = fPar->GetChipGain();
0c24ba98 1247 Double_t coupling = padCoupling * timeCoupling;
1248 Double_t convert = kEl2fC * chipGain;
4487dad0 1249 Double_t adcInRange = fPar->GetADCinRange();
1250 Double_t adcOutRange = fPar->GetADCoutRange();
1251 Int_t adcThreshold = fPar->GetADCthreshold();
7e582e9f 1252 Int_t adcBaseline = fPar->GetADCbaseline();
abaf1f1d 1253
1254 AliTRDdataArrayI *digitsIn;
1255 AliTRDdataArrayI *digitsOut;
1256 AliTRDdataArrayI *dictionaryIn[kNDict];
1257 AliTRDdataArrayI *dictionaryOut[kNDict];
1258
1259 // Loop through the detectors
1260 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
da581aea 1261
e23fbb27 1262 if (fDebug > 0) {
1263 printf("<AliTRDdigitizer::ConvertSDigits> ");
abaf1f1d 1264 printf("Convert detector %d to digits.\n",iDet);
1265 }
1266
1267 Int_t plane = fGeo->GetPlane(iDet);
1268 Int_t sector = fGeo->GetSector(iDet);
1269 Int_t chamber = fGeo->GetChamber(iDet);
4487dad0 1270 Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
1271 Int_t nColMax = fPar->GetColMax(plane);
1272 Int_t nTimeTotal = fPar->GetTimeTotal();
abaf1f1d 1273
e23fbb27 1274 Double_t *inADC = new Double_t[nTimeTotal];
1275 Double_t *outADC = new Double_t[nTimeTotal];
1276
abaf1f1d 1277 digitsIn = fSDigitsManager->GetDigits(iDet);
1278 digitsIn->Expand();
1279 digitsOut = fDigitsManager->GetDigits(iDet);
1280 digitsOut->Allocate(nRowMax,nColMax,nTimeTotal);
1281 for (iDict = 0; iDict < kNDict; iDict++) {
1282 dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
1283 dictionaryIn[iDict]->Expand();
1284 dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
1285 dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
1286 }
1287
e23fbb27 1288 for (iRow = 0; iRow < nRowMax; iRow++ ) {
1289 for (iCol = 0; iCol < nColMax; iCol++ ) {
abaf1f1d 1290
e23fbb27 1291 for (iTime = 0; iTime < nTimeTotal; iTime++) {
abaf1f1d 1292 Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime);
1293 signal *= sDigitsScale;
0c24ba98 1294 // Pad and time coupling
1295 signal *= coupling;
7e582e9f 1296 // Add the noise, starting from minus ADC baseline in electrons
1297 Double_t baselineEl = adcBaseline * (adcInRange / adcOutRange) / convert;
1298 signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),-baselineEl);
abaf1f1d 1299 // Convert to mV
1300 signal *= convert;
7e582e9f 1301 // add ADC baseline in mV
1302 signal += adcBaseline * (adcInRange / adcOutRange);
abaf1f1d 1303 // Convert to ADC counts. Set the overflow-bit adcOutRange if the
1304 // signal is larger than adcInRange
1305 Int_t adc = 0;
1306 if (signal >= adcInRange) {
1307 adc = ((Int_t) adcOutRange);
1308 }
1309 else {
1310 adc = ((Int_t) (signal * (adcOutRange / adcInRange)));
1311 }
e23fbb27 1312 inADC[iTime] = adc;
1313 outADC[iTime] = adc;
1314 }
1315
1316 // Apply the tail cancelation via the digital filter
4487dad0 1317 if (fPar->TCOn()) {
1318 DeConvExp(inADC,outADC,nTimeTotal,fPar->GetTCnexp());
e23fbb27 1319 }
1320
1321 for (iTime = 0; iTime < nTimeTotal; iTime++) {
abaf1f1d 1322 // Store the amplitude of the digit if above threshold
e23fbb27 1323 if (outADC[iTime] > adcThreshold) {
3583ac1a 1324 digitsOut->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime]));
e23fbb27 1325 // Copy the dictionary
1326 for (iDict = 0; iDict < kNDict; iDict++) {
1327 Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1328 dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track);
1329 }
abaf1f1d 1330 }
abaf1f1d 1331 }
e23fbb27 1332
abaf1f1d 1333 }
1334 }
1335
1336 if (fCompress) {
1337 digitsIn->Compress(1,0);
1338 digitsOut->Compress(1,0);
1339 for (iDict = 0; iDict < kNDict; iDict++) {
1340 dictionaryIn[iDict]->Compress(1,0);
1341 dictionaryOut[iDict]->Compress(1,0);
1342 }
1343 }
1344
e23fbb27 1345 delete [] inADC;
1346 delete [] outADC;
1347
abaf1f1d 1348 }
f7336fa3 1349
1350 return kTRUE;
1351
1352}
1353
1354//_____________________________________________________________________________
abaf1f1d 1355Bool_t AliTRDdigitizer::MergeSDigits()
16bf9884 1356{
1357 //
abaf1f1d 1358 // Merges the input s-digits:
1359 // - The amplitude of the different inputs are summed up.
1360 // - Of the track IDs from the input dictionaries only one is
1361 // kept for each input. This works for maximal 3 different merged inputs.
16bf9884 1362 //
1363
abaf1f1d 1364 // Number of track dictionary arrays
1365 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1366
4487dad0 1367 if (!fPar) {
1368 fPar = new AliTRDparameter("TRDparameter","Standard parameter");
1369 if (fDebug > 0) {
1370 printf("<AliTRDdigitizer::MergeSDigits> ");
1371 printf("Create the default parameter object\n");
1372 }
1373 }
1374
abaf1f1d 1375 Int_t iDict = 0;
e23fbb27 1376 Int_t jDict = 0;
abaf1f1d 1377
1378 AliTRDdataArrayI *digitsA;
1379 AliTRDdataArrayI *digitsB;
1380 AliTRDdataArrayI *dictionaryA[kNDict];
1381 AliTRDdataArrayI *dictionaryB[kNDict];
1382
1383 // Get the first s-digits
1384 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
1385 if (!fSDigitsManager) return kFALSE;
1386
1387 // Loop through the other sets of s-digits
1388 AliTRDdigitsManager *mergeSDigitsManager;
1389 mergeSDigitsManager = (AliTRDdigitsManager *)
1390 fSDigitsManagerList->After(fSDigitsManager);
1391
e23fbb27 1392 if (fDebug > 0) {
abaf1f1d 1393 if (mergeSDigitsManager) {
e23fbb27 1394 printf("<AliTRDdigitizer::MergeSDigits> ");
1395 printf("Merge %d input files.\n",fSDigitsManagerList->GetSize());
abaf1f1d 1396 }
1397 else {
e23fbb27 1398 printf("<AliTRDdigitizer::MergeSDigits> ");
abaf1f1d 1399 printf("Only one input file.\n");
1400 }
1401 }
1402
1403 Int_t iMerge = 0;
1404 while (mergeSDigitsManager) {
1405
1406 iMerge++;
1407
1408 // Loop through the detectors
1409 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1410
1411 Int_t plane = fGeo->GetPlane(iDet);
1412 Int_t sector = fGeo->GetSector(iDet);
1413 Int_t chamber = fGeo->GetChamber(iDet);
4487dad0 1414 Int_t nRowMax = fPar->GetRowMax(plane,chamber,sector);
1415 Int_t nColMax = fPar->GetColMax(plane);
1416 Int_t nTimeTotal = fPar->GetTimeTotal();
abaf1f1d 1417
1418 // Loop through the pixels of one detector and add the signals
1419 digitsA = fSDigitsManager->GetDigits(iDet);
1420 digitsB = mergeSDigitsManager->GetDigits(iDet);
1421 digitsA->Expand();
1422 digitsB->Expand();
1423 for (iDict = 0; iDict < kNDict; iDict++) {
1424 dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
1425 dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict);
1426 dictionaryA[iDict]->Expand();
1427 dictionaryB[iDict]->Expand();
1428 }
1429
4487dad0 1430 // Merge only detectors that contain a signal
1431 Bool_t doMerge = kTRUE;
1432 if (fMergeSignalOnly) {
1433 if (digitsA->GetOverThreshold(0) == 0) {
1434 doMerge = kFALSE;
1435 }
abaf1f1d 1436 }
1437
4487dad0 1438 if (doMerge) {
abaf1f1d 1439
4487dad0 1440 if (fDebug > 0) {
1441 printf("<AliTRDdigitizer::MergeSDigits> ");
1442 printf("Merge detector %d of input no.%d\n",iDet,iMerge+1);
1443 }
abaf1f1d 1444
4487dad0 1445 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1446 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1447 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1448
1449 // Add the amplitudes of the summable digits
1450 Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime);
1451 Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime);
1452 ampA += ampB;
1453 digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA);
1454
1455 // Add the mask to the track id if defined.
1456 for (iDict = 0; iDict < kNDict; iDict++) {
1457 Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1458 if ((fMasks) && (trackB > 0)) {
1459 for (jDict = 0; jDict < kNDict; jDict++) {
1460 Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1461 if (trackA == 0) {
1462 trackA = trackB + fMasks[iMerge];
1463 dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA);
1464 }
1465 }
1466 }
e23fbb27 1467 }
abaf1f1d 1468
4487dad0 1469 }
abaf1f1d 1470 }
4487dad0 1471 }
1472
abaf1f1d 1473 }
1474
1475 if (fCompress) {
1476 digitsA->Compress(1,0);
1477 digitsB->Compress(1,0);
1478 for (iDict = 0; iDict < kNDict; iDict++) {
1479 dictionaryA[iDict]->Compress(1,0);
1480 dictionaryB[iDict]->Compress(1,0);
1481 }
1482 }
1483
1484 }
1485
1486 // The next set of s-digits
1487 mergeSDigitsManager = (AliTRDdigitsManager *)
1488 fSDigitsManagerList->After(mergeSDigitsManager);
1489
1490 }
1491
16bf9884 1492 return kTRUE;
1493
1494}
1495
1496//_____________________________________________________________________________
abaf1f1d 1497Bool_t AliTRDdigitizer::SDigits2Digits()
1498{
1499 //
1500 // Merges the input s-digits and converts them to normal digits
1501 //
1502
1503 if (!MergeSDigits()) return kFALSE;
1504
1505 return ConvertSDigits();
1506
1507}
1508
1509//_____________________________________________________________________________
793ff80c 1510Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector)
1511{
1512 //
1513 // Checks whether a detector is enabled
1514 //
1515
0c24ba98 1516 if (fSimpleSim) return kTRUE;
1517
793ff80c 1518 if ((fTRD->GetSensChamber() >= 0) &&
1519 (fTRD->GetSensChamber() != chamber)) return kFALSE;
1520 if ((fTRD->GetSensPlane() >= 0) &&
c1e4b257 1521 (fTRD->GetSensPlane() != plane)) return kFALSE;
793ff80c 1522 if ( fTRD->GetSensSector() >= 0) {
1523 Int_t sens1 = fTRD->GetSensSector();
1524 Int_t sens2 = sens1 + fTRD->GetSensSectorRange();
1525 sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect()))
1526 * AliTRDgeometry::Nsect();
1527 if (sens1 < sens2) {
1528 if ((sector < sens1) || (sector >= sens2)) return kFALSE;
1529 }
1530 else {
1531 if ((sector < sens1) && (sector >= sens2)) return kFALSE;
1532 }
1533 }
1534
1535 return kTRUE;
1536
1537}
1538
1539//_____________________________________________________________________________
0a29d0f1 1540Bool_t AliTRDdigitizer::WriteDigits() const
f7336fa3 1541{
1542 //
1543 // Writes out the TRD-digits and the dictionaries
1544 //
1545
bdbb05bb 1546 //Write parameters
1547 fRunLoader->CdGAFile();
1548 if (!gFile->Get("TRDparameter")) GetParameter()->Write();
1549
da581aea 1550 // Store the digits and the dictionary in the tree
abaf1f1d 1551 return fDigitsManager->WriteDigits();
f7336fa3 1552
1553}
793ff80c 1554
1555//_____________________________________________________________________________
e23fbb27 1556void AliTRDdigitizer::DeConvExp(Double_t *source, Double_t *target
1557 , Int_t n, Int_t nexp)
1558{
1559 //
1560 // Does the deconvolution by the digital filter.
1561 //
1562 // Author: Marcus Gutfleisch, KIP Heidelberg
1563 // Optimized for: New TRF from Venelin Angelov, simulated with CADENCE
1564 // Pad-ground capacitance = 25 pF
1565 // Pad-pad cross talk capacitance = 6 pF
1566 // For 10 MHz digitization, corresponding to 20 time bins
1567 // in the drift region
1568 //
1569
1570 Double_t rates[2];
1571 Double_t coefficients[2];
1572
1573 /* initialize (coefficient = alpha, rates = lambda) */
1574
1575 if( nexp == 1 ) {
1576 rates[0] = 0.466998;
1577 /* no rescaling */
1578 coefficients[0] = 1.0;
1579 }
1580 if( nexp == 2 ) {
1581 rates[0] = 0.8988162;
1582 coefficients[0] = 0.11392069;
1583 rates[1] = 0.3745688;
1584 coefficients[1] = 0.8860793;
1585 /* no rescaling */
1586 Float_t sumc = coefficients[0]+coefficients[1];
1587 coefficients[0] /= sumc;
1588 coefficients[1] /= sumc;
1589 }
1590
1591 Int_t i, k;
1592 Double_t reminder[2];
1593 Double_t correction, result;
1594
1595 /* attention: computation order is important */
1596 correction=0.0;
1597 for ( k = 0; k < nexp; k++ ) reminder[k]=0.0;
1598
1599 for ( i = 0; i < n; i++ ) {
1600 result = ( source[i] - correction ); /* no rescaling */
1601 target[i] = result;
1602
1603 for ( k = 0; k < nexp; k++ ) reminder[k] = rates[k]
1604 * ( reminder[k] + coefficients[k] * result);
1605
1606 correction=0.0;
1607 for ( k = 0; k < nexp; k++ ) correction += reminder[k];
1608 }
1609
1610}
1611
8e64dd77 1612//_____________________________________________________________________________
88cb7938 1613void AliTRDdigitizer::InitOutput(Int_t iEvent)
8e64dd77 1614{
1615 //
1616 // Initializes the output branches
1617 //
1618
1619 fEvent = iEvent;
88cb7938 1620
1621 if (!fRunLoader)
1622 {
1623 Error("InitOutput","Run Loader is NULL");
1624 return;
1625 }
1626 AliLoader* loader = fRunLoader->GetLoader("TRDLoader");
1627 if (!loader)
1628 {
1629 Error("Open","Can not get TRD loader from Run Loader");
1630 return;
1631 }
1632
1633 TTree* tree = 0;
1634
1635 if (fSDigits)
1636 {
1637 //if we produce SDigits
1638 tree = loader->TreeS();
1639 if (!tree)
1640 {
1641 loader->MakeTree("S");
1642 tree = loader->TreeS();
1643 }
1644 }
1645 else
1646 {//if we produce Digits
1647 tree = loader->TreeD();
1648 if (!tree)
1649 {
1650 loader->MakeTree("D");
1651 tree = loader->TreeD();
1652 }
1653 }
1654 fDigitsManager->SetEvent(iEvent);
1655 fDigitsManager->MakeBranch(tree);
8e64dd77 1656
1657}