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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>
3becff3c 55#include <TGeoManager.h>
793ff80c 56
57#include "AliRun.h"
88cb7938 58#include "AliRunLoader.h"
59#include "AliLoader.h"
60#include "AliConfig.h"
db30bf0f 61#include "AliMagF.h"
85cbec76 62#include "AliRunDigitizer.h"
88cb7938 63#include "AliRunLoader.h"
64#include "AliLoader.h"
ad2cc20b 65#include "AliLog.h"
f7336fa3 66
67#include "AliTRD.h"
793ff80c 68#include "AliTRDhit.h"
f7336fa3 69#include "AliTRDdigitizer.h"
da581aea 70#include "AliTRDdataArrayI.h"
71#include "AliTRDdataArrayF.h"
793ff80c 72#include "AliTRDsegmentArray.h"
da581aea 73#include "AliTRDdigitsManager.h"
793ff80c 74#include "AliTRDgeometry.h"
a5cadd36 75#include "AliTRDpadPlane.h"
3551db50 76#include "AliTRDcalibDB.h"
77#include "AliTRDSimParam.h"
78#include "AliTRDCommonParam.h"
f7336fa3 79
80ClassImp(AliTRDdigitizer)
81
82//_____________________________________________________________________________
85cbec76 83AliTRDdigitizer::AliTRDdigitizer()
f7336fa3 84{
85 //
86 // AliTRDdigitizer default constructor
87 //
88
85a5290f 89 fRunLoader = 0;
4487dad0 90 fDigitsManager = 0;
4487dad0 91 fSDigitsManager = 0;
85a5290f 92 fSDigitsManagerList = 0;
4487dad0 93 fTRD = 0;
94 fGeo = 0;
abaf1f1d 95 fEvent = 0;
85a5290f 96 fMasks = 0;
abaf1f1d 97 fCompress = kTRUE;
e23fbb27 98 fDebug = 0;
abaf1f1d 99 fSDigits = kFALSE;
100 fSDigitsScale = 0.0;
4487dad0 101 fMergeSignalOnly = kFALSE;
3becff3c 102 fFixedGeometry = kFALSE;
0c24ba98 103
3becff3c 104 fTimeStructInfo.fLastVdrift = 0;
105 fTimeStructInfo.fTimeStruct1 = 0;
106 fTimeStructInfo.fTimeStruct2 = 0;
107 fTimeStructInfo.fVDlo = 0;
108 fTimeStructInfo.fVDhi = 0;
3551db50 109
3becff3c 110 fDiffusionInfo.fLastVdrift = 0;
111 fDiffusionInfo.fDiffusionT = 0.0;
112 fDiffusionInfo.fDiffusionL = 0.0;
3551db50 113 fDiffusionInfo.fLorentzFactor = 0.0;
114
115 Init();
3becff3c 116
f7336fa3 117}
118
119//_____________________________________________________________________________
120AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
85cbec76 121 :AliDigitizer(name,title)
f7336fa3 122{
123 //
85cbec76 124 // AliTRDdigitizer constructor
125 //
126
3551db50 127 Init();
3becff3c 128
85cbec76 129}
130
131//_____________________________________________________________________________
132AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
133 , const Text_t *name, const Text_t *title)
134 :AliDigitizer(manager,name,title)
135{
136 //
137 // AliTRDdigitizer constructor
f7336fa3 138 //
139
3551db50 140 Init();
3becff3c 141
bfc40adc 142}
143
144//_____________________________________________________________________________
145AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
146 :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
147{
148 //
149 // AliTRDdigitizer constructor
150 //
151
3551db50 152 Init();
3becff3c 153
3551db50 154}
88cb7938 155
3551db50 156//_____________________________________________________________________________
157Bool_t AliTRDdigitizer::Init()
158{
3becff3c 159 //
160 // Initialize the digitizer with default values
161 //
162
85a5290f 163 fRunLoader = 0;
3551db50 164
165 //NewIO: These data members probably are not needed anymore
4487dad0 166 fDigitsManager = 0;
4487dad0 167 fSDigitsManager = 0;
85a5290f 168 fSDigitsManagerList = 0;
4487dad0 169 fTRD = 0;
170 fGeo = 0;
3551db50 171 //End NewIO comment
3becff3c 172
abaf1f1d 173 fEvent = 0;
85a5290f 174 fMasks = 0;
abaf1f1d 175 fCompress = kTRUE;
e23fbb27 176 fDebug = 0;
abaf1f1d 177 fSDigits = kFALSE;
3551db50 178 fSDigitsScale = 100.; // For the summable digits
4487dad0 179 fMergeSignalOnly = kFALSE;
3becff3c 180 fFixedGeometry = kFALSE;
3551db50 181
3becff3c 182 fTimeStructInfo.fLastVdrift = -1;
183 fTimeStructInfo.fTimeStruct1 = 0;
184 fTimeStructInfo.fTimeStruct2 = 0;
185 fTimeStructInfo.fVDlo = 0;
186 fTimeStructInfo.fVDhi = 0;
3551db50 187
3becff3c 188 fDiffusionInfo.fLastVdrift = -1;
189 fDiffusionInfo.fDiffusionT = 0.0;
190 fDiffusionInfo.fDiffusionL = 0.0;
3551db50 191 fDiffusionInfo.fLorentzFactor = 0.0;
793ff80c 192
3551db50 193 return AliDigitizer::Init();
3becff3c 194
f7336fa3 195}
196
8230f242 197//_____________________________________________________________________________
73ae7b59 198AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d):AliDigitizer(d)
8230f242 199{
200 //
201 // AliTRDdigitizer copy constructor
202 //
203
dd9a6ee3 204 ((AliTRDdigitizer &) d).Copy(*this);
8230f242 205
206}
207
f7336fa3 208//_____________________________________________________________________________
209AliTRDdigitizer::~AliTRDdigitizer()
210{
8230f242 211 //
212 // AliTRDdigitizer destructor
213 //
f7336fa3 214
abaf1f1d 215 if (fDigitsManager) {
216 delete fDigitsManager;
4487dad0 217 fDigitsManager = 0;
f7336fa3 218 }
219
47b5729a 220 fSDigitsManager = 0;
f7336fa3 221
abaf1f1d 222 if (fSDigitsManagerList) {
47b5729a 223 fSDigitsManagerList->Delete();
abaf1f1d 224 delete fSDigitsManagerList;
4487dad0 225 fSDigitsManagerList = 0;
e23fbb27 226 }
227
228 if (fMasks) {
229 delete [] fMasks;
230 fMasks = 0;
231 }
232
3551db50 233 if (fTimeStructInfo.fTimeStruct1)
234 {
235 delete [] fTimeStructInfo.fTimeStruct1;
236 fTimeStructInfo.fTimeStruct1 = 0;
237 }
238
239 if (fTimeStructInfo.fTimeStruct2)
240 {
241 delete [] fTimeStructInfo.fTimeStruct2;
242 fTimeStructInfo.fTimeStruct2 = 0;
243 }
3becff3c 244
f7336fa3 245}
246
8230f242 247//_____________________________________________________________________________
dd9a6ee3 248AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
249{
250 //
251 // Assignment operator
252 //
253
254 if (this != &d) ((AliTRDdigitizer &) d).Copy(*this);
255 return *this;
256
257}
258
259//_____________________________________________________________________________
e0d47c25 260void AliTRDdigitizer::Copy(TObject &d) const
8230f242 261{
262 //
263 // Copy function
264 //
265
85a5290f 266 ((AliTRDdigitizer &) d).fRunLoader = 0;
4487dad0 267 ((AliTRDdigitizer &) d).fDigitsManager = 0;
85a5290f 268 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
269 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
4487dad0 270 ((AliTRDdigitizer &) d).fTRD = 0;
271 ((AliTRDdigitizer &) d).fGeo = 0;
85a5290f 272 ((AliTRDdigitizer &) d).fEvent = 0;
273 ((AliTRDdigitizer &) d).fMasks = 0;
abaf1f1d 274 ((AliTRDdigitizer &) d).fCompress = fCompress;
e23fbb27 275 ((AliTRDdigitizer &) d).fDebug = fDebug ;
abaf1f1d 276 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
277 ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale;
4487dad0 278 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
3becff3c 279 ((AliTRDdigitizer &) d).fFixedGeometry = fFixedGeometry;
0c24ba98 280
3551db50 281 AliTRDdigitizer& target = (AliTRDdigitizer &) d;
282
283 target.fDiffusionInfo = fDiffusionInfo;
284
3becff3c 285 // Do not copy timestructs, just invalidate lastvdrift.
286 // Next time they are requested, they get recalculated
3551db50 287 if (target.fTimeStructInfo.fTimeStruct1)
288 {
289 delete[] target.fTimeStructInfo.fTimeStruct1;
290 target.fTimeStructInfo.fTimeStruct1 = 0;
291 }
292 if (target.fTimeStructInfo.fTimeStruct2)
293 {
294 delete[] target.fTimeStructInfo.fTimeStruct2;
295 target.fTimeStructInfo.fTimeStruct2 = 0;
3becff3c 296 }
3551db50 297 target.fTimeStructInfo.fLastVdrift = -1;
3becff3c 298
e23fbb27 299}
300
e23fbb27 301//_____________________________________________________________________________
302void AliTRDdigitizer::Exec(Option_t* option)
303{
304 //
305 // Executes the merging
306 //
307
308 Int_t iInput;
309
310 AliTRDdigitsManager *sdigitsManager;
311
312 TString optionString = option;
313 if (optionString.Contains("deb")) {
314 fDebug = 1;
315 if (optionString.Contains("2")) {
316 fDebug = 2;
317 }
318 printf("<AliTRDdigitizer::Exec> ");
319 printf("Called with debug option %d\n",fDebug);
320 }
321
cec4059b 322 // The AliRoot file is already connected by the manager
88cb7938 323 AliRunLoader* inrl;
324
325 if (gAlice)
326 {
4487dad0 327 if (fDebug > 0) {
328 printf("<AliTRDdigitizer::Exec> ");
329 printf("AliRun object found on file.\n");
330 }
88cb7938 331 }
4487dad0 332 else {
88cb7938 333 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
334 inrl->LoadgAlice();
335 gAlice = inrl->GetAliRun();
336 if (!gAlice)
337 {
338 printf("<AliTRDdigitizer::Exec> ");
339 printf("Could not find AliRun object.\n");
340 return;
341 }
4487dad0 342 }
cec4059b 343
e23fbb27 344 Int_t nInput = fManager->GetNinputs();
345 fMasks = new Int_t[nInput];
346 for (iInput = 0; iInput < nInput; iInput++) {
347 fMasks[iInput] = fManager->GetMask(iInput);
348 }
e23fbb27 349
350 // Initialization
e23fbb27 351
67c67368 352 AliRunLoader* orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
353 if (InitDetector()) {
354 AliLoader* ogime = orl->GetLoader("TRDLoader");
355
356 TTree* tree = 0;
357 if (fSDigits)
358 {
359 //if we produce SDigits
360 tree = ogime->TreeS();
361 if (!tree)
362 {
363 ogime->MakeTree("S");
364 tree = ogime->TreeS();
365 }
366 }
367 else
368 {//if we produce Digits
369 tree = ogime->TreeD();
370 if (!tree)
371 {
372 ogime->MakeTree("D");
373 tree = ogime->TreeD();
374 }
375 }
376 MakeBranch(tree);
377 }
378
e23fbb27 379 for (iInput = 0; iInput < nInput; iInput++) {
380
381 if (fDebug > 0) {
382 printf("<AliTRDdigitizer::Exec> ");
383 printf("Add input stream %d\n",iInput);
384 }
385
c57e2264 386 // check if the input tree exists
88cb7938 387 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
388 AliLoader* gime = inrl->GetLoader("TRDLoader");
389
390 TTree * treees = gime->TreeS();
391 if (treees == 0x0)
392 {
393 if (gime->LoadSDigits())
394 {
395 Error("Exec","Error Occured while loading S. Digits for input %d.",iInput);
396 return;
397 }
398 treees = gime->TreeS();
399 }
400
401 if (treees == 0x0) {
c57e2264 402 printf("<AliTRDdigitizer::Exec> ");
403 printf("Input stream %d does not exist\n",iInput);
404 return;
405 }
406
e23fbb27 407 // Read the s-digits via digits manager
408 sdigitsManager = new AliTRDdigitsManager();
409 sdigitsManager->SetDebug(fDebug);
410 sdigitsManager->SetSDigits(kTRUE);
88cb7938 411
412 AliRunLoader* rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
413 AliLoader* gimme = rl->GetLoader("TRDLoader");
414 if (!gimme->TreeS()) gimme->LoadSDigits();
415 sdigitsManager->ReadDigits(gimme->TreeS());
e23fbb27 416
417 // Add the s-digits to the input list
418 AddSDigitsManager(sdigitsManager);
419
420 }
421
422 // Convert the s-digits to normal digits
423 if (fDebug > 0) {
424 printf("<AliTRDdigitizer::Exec> ");
425 printf("Do the conversion\n");
426 }
427 SDigits2Digits();
428
429 // Store the digits
430 if (fDebug > 0) {
431 printf("<AliTRDdigitizer::Exec> ");
432 printf("Write the digits\n");
433 }
88cb7938 434
e23fbb27 435 fDigitsManager->WriteDigits();
88cb7938 436
67c67368 437 //Write parameters
438 orl->CdGAFile();
67c67368 439
e23fbb27 440 if (fDebug > 0) {
441 printf("<AliTRDdigitizer::Exec> ");
442 printf("Done\n");
443 }
444
b1113c6b 445 DeleteSDigitsManager();
446
e23fbb27 447}
448
f7336fa3 449//_____________________________________________________________________________
e23fbb27 450Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
f7336fa3 451{
452 //
453 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
454 //
f7336fa3 455 // Connect the AliRoot file containing Geometry, Kine, and Hits
3becff3c 456 //
f540341d 457
e191bb57 458 TString evfoldname = AliConfig::GetDefaultEventFolderName();
f540341d 459 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
460 if (!fRunLoader)
e191bb57 461 fRunLoader = AliRunLoader::Open(file,AliConfig::GetDefaultEventFolderName(),
f540341d 462 "UPDATE");
88cb7938 463
464 if (!fRunLoader)
465 {
466 Error("Open","Can not open session for file %s.",file);
467 return kFALSE;
468 }
469
f540341d 470 if (!fRunLoader->GetAliRun()) fRunLoader->LoadgAlice();
88cb7938 471 gAlice = fRunLoader->GetAliRun();
472
da581aea 473 if (gAlice) {
e23fbb27 474 if (fDebug > 0) {
475 printf("<AliTRDdigitizer::Open> ");
abaf1f1d 476 printf("AliRun object found on file.\n");
477 }
da581aea 478 }
479 else {
e23fbb27 480 printf("<AliTRDdigitizer::Open> ");
da581aea 481 printf("Could not find AliRun object.\n");
482 return kFALSE;
483 }
f7336fa3 484
485 fEvent = nEvent;
486
487 // Import the Trees for the event nEvent in the file
88cb7938 488 fRunLoader->GetEvent(fEvent);
489
490 AliLoader* loader = fRunLoader->GetLoader("TRDLoader");
491 if (!loader)
492 {
493 Error("Open","Can not get TRD loader from Run Loader");
494 return kFALSE;
495 }
496
abaf1f1d 497 if (InitDetector()) {
88cb7938 498 TTree* tree = 0;
499 if (fSDigits)
500 {
501 //if we produce SDigits
502 tree = loader->TreeS();
503 if (!tree)
504 {
505 loader->MakeTree("S");
506 tree = loader->TreeS();
507 }
508 }
509 else
510 {//if we produce Digits
88cb7938 511 if (!tree)
512 {
513 loader->MakeTree("D");
514 tree = loader->TreeD();
515 }
516 }
517 return MakeBranch(tree);
abaf1f1d 518 }
519 else {
520 return kFALSE;
521 }
793ff80c 522
523}
524
525//_____________________________________________________________________________
526Bool_t AliTRDdigitizer::InitDetector()
527{
528 //
529 // Sets the pointer to the TRD detector and the geometry
530 //
531
dd9a6ee3 532 // Get the pointer to the detector class and check for version 1
4487dad0 533 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
cec4059b 534 if (!fTRD) {
535 printf("<AliTRDdigitizer::InitDetector> ");
536 printf("No TRD module found\n");
537 exit(1);
538 }
dd9a6ee3 539 if (fTRD->IsVersion() != 1) {
e23fbb27 540 printf("<AliTRDdigitizer::InitDetector> ");
dd9a6ee3 541 printf("TRD must be version 1 (slow simulator).\n");
542 exit(1);
543 }
544
545 // Get the geometry
546 fGeo = fTRD->GetGeometry();
e23fbb27 547 if (fDebug > 0) {
548 printf("<AliTRDdigitizer::InitDetector> ");
abaf1f1d 549 printf("Geometry version %d\n",fGeo->IsVersion());
550 }
dd9a6ee3 551
abaf1f1d 552 // Create a digits manager
47b5729a 553 delete fDigitsManager;
abaf1f1d 554 fDigitsManager = new AliTRDdigitsManager();
555 fDigitsManager->SetSDigits(fSDigits);
556 fDigitsManager->CreateArrays();
557 fDigitsManager->SetEvent(fEvent);
e23fbb27 558 fDigitsManager->SetDebug(fDebug);
abaf1f1d 559
560 // The list for the input s-digits manager to be merged
47b5729a 561 if (fSDigitsManagerList) {
562 fSDigitsManagerList->Delete();
3becff3c 563 }
564 else {
47b5729a 565 fSDigitsManagerList = new TList();
566 }
abaf1f1d 567
4487dad0 568 return kTRUE;
f7336fa3 569
570}
571
6244debe 572//_____________________________________________________________________________
88cb7938 573Bool_t AliTRDdigitizer::MakeBranch(TTree* tree) const
6244debe 574{
abaf1f1d 575 //
576 // Create the branches for the digits array
6244debe 577 //
578
88cb7938 579 return fDigitsManager->MakeBranch(tree);
6244debe 580
581}
582
f7336fa3 583//_____________________________________________________________________________
584Bool_t AliTRDdigitizer::MakeDigits()
585{
586 //
872a7aba 587 // Creates digits.
f7336fa3 588 //
589
f7336fa3 590 ///////////////////////////////////////////////////////////////
591 // Parameter
592 ///////////////////////////////////////////////////////////////
593
594 // Converts number of electrons to fC
872a7aba 595 const Double_t kEl2fC = 1.602E-19 * 1.0E15;
f7336fa3 596
597 ///////////////////////////////////////////////////////////////
598
793ff80c 599 // Number of pads included in the pad response
a5cadd36 600 const Int_t kNpad = 3;
793ff80c 601
602 // Number of track dictionary arrays
a5cadd36 603 const Int_t kNDict = AliTRDdigitsManager::kNDict;
793ff80c 604
872a7aba 605 // Half the width of the amplification region
606 const Float_t kAmWidth = AliTRDgeometry::AmThick() / 2.;
3becff3c 607 // Width of the drift region
ccb4315c 608 const Float_t kDrWidth = AliTRDgeometry::DrThick();
3551db50 609
a5cadd36 610 Int_t iRow, iCol, iTime, iPad;
611 Int_t iDict = 0;
612 Int_t nBytes = 0;
f7336fa3 613
a5cadd36 614 Int_t totalSizeDigits = 0;
615 Int_t totalSizeDict0 = 0;
616 Int_t totalSizeDict1 = 0;
617 Int_t totalSizeDict2 = 0;
f7336fa3 618
a5cadd36 619 Int_t timeBinTRFend = 1;
872a7aba 620
a5cadd36 621 Double_t pos[3];
622 Double_t rot[3];
623 Double_t xyz[3];
624 Double_t padSignal[kNpad];
625 Double_t signalOld[kNpad];
872a7aba 626
a5cadd36 627 AliTRDdataArrayF *signals = 0;
628 AliTRDdataArrayI *digits = 0;
8230f242 629 AliTRDdataArrayI *dictionary[kNDict];
da581aea 630
a5cadd36 631 AliTRDpadPlane *padPlane = 0;
632
ad2cc20b 633 if (!gGeoManager) AliFatal("No geometry!");
3becff3c 634
7754cd1f 635
3551db50 636 AliTRDSimParam* simParam = AliTRDSimParam::Instance();
3becff3c 637 if (!simParam) {
3551db50 638 printf("<AliTRDdigitizer::MakeDigits> ");
639 printf("Could not get simulation params\n");
640 return kFALSE;
641 }
642
643 AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
3becff3c 644 if (!commonParam) {
3551db50 645 printf("<AliTRDdigitizer::MakeDigits> ");
646 printf("Could not get common params\n");
647 return kFALSE;
648 }
649
793ff80c 650 // Create a container for the amplitudes
651 AliTRDsegmentArray *signalsArray
e23fbb27 652 = new AliTRDsegmentArray("AliTRDdataArrayF"
653 ,AliTRDgeometry::Ndet());
793ff80c 654
3551db50 655 AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
3becff3c 656 if (!calibration) {
3551db50 657 printf("<AliTRDdigitizer::MakeDigits> ");
658 printf("Could not get calibration object\n");
659 return kFALSE;
660 }
661
3becff3c 662 if (!gGeoManager) {
663 printf("<AliTRDdigitizer::MakeDigits> ");
664 printf("No TGeoManager available. Switch to fixed geometry.\n");
665 fFixedGeometry = kTRUE;
666 }
667
3551db50 668 if (simParam->TRFOn()) {
669 timeBinTRFend = ((Int_t) ( simParam->GetTRFhi() * calibration->GetSamplingFrequency())) - 1;
e23fbb27 670 if (fDebug > 0) {
671 printf("<AliTRDdigitizer::MakeDigits> ");
ccb4315c 672 printf("Sample the TRF up to bin %d\n",timeBinTRFend);
abaf1f1d 673 }
da581aea 674 }
675
3551db50 676 Float_t elAttachProp = simParam->GetElAttachProp() / 100.;
793ff80c 677
872a7aba 678 if (!fGeo) {
e23fbb27 679 printf("<AliTRDdigitizer::MakeDigits> ");
872a7aba 680 printf("No geometry defined\n");
681 return kFALSE;
682 }
683
e23fbb27 684 if (fDebug > 0) {
685 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 686 printf("Start creating digits.\n");
687 }
872a7aba 688
88cb7938 689 AliLoader* gimme = fRunLoader->GetLoader("TRDLoader");
690 if (!gimme->TreeH()) gimme->LoadHits();
691 TTree* hitTree = gimme->TreeH();
3becff3c 692 if (hitTree == 0x0) {
88cb7938 693 Error("MakeDigits","Can not get TreeH");
694 return kFALSE;
3becff3c 695 }
88cb7938 696 fTRD->SetTreeAddress();
697
793ff80c 698 // Get the number of entries in the hit tree
699 // (Number of primary particles creating a hit somewhere)
3becff3c 700 Int_t nTrack = (Int_t) hitTree->GetEntries();
701 if (fDebug > 0) {
702 printf("<AliTRDdigitizer::MakeDigits> ");
703 printf("Found %d primary particles\n",nTrack);
0c24ba98 704 }
793ff80c 705
706 Int_t detectorOld = -1;
707 Int_t countHits = 0;
708
a328fff9 709 if (fDebug > 0) {
3551db50 710 printf("<AliTRDdigitizer::MakeDigits> Sampling = %.0fMHz\n", calibration->GetSamplingFrequency());
711 printf("<AliTRDdigitizer::MakeDigits> Gain = %d\n",(Int_t)simParam->GetGasGain());
712 printf("<AliTRDdigitizer::MakeDigits> Noise = %d\n",(Int_t)simParam->GetNoise());
713 if (simParam->TimeStructOn()) {
a328fff9 714 printf("<AliTRDdigitizer::MakeDigits> ");
715 printf("Time Structure of drift cells implemented.\n");
a328fff9 716 } else {
717 printf("<AliTRDdigitizer::MakeDigits> ");
718 printf("Constant drift velocity in drift cells.\n");
719 }
720 }
3551db50 721
3becff3c 722 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
723 Float_t samplingRate = calibration->GetSamplingFrequency();
a328fff9 724
793ff80c 725 // Loop through all entries in the tree
726 for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) {
727
3becff3c 728 gAlice->ResetHits();
729 nBytes += hitTree->GetEvent(iTrack);
793ff80c 730
e23fbb27 731 // Loop through the TRD hits
732 Int_t iHit = 0;
733 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
734 while (hit) {
735
793ff80c 736 countHits++;
e23fbb27 737 iHit++;
738
ccb4315c 739 pos[0] = hit->X();
740 pos[1] = hit->Y();
741 pos[2] = hit->Z();
742 Float_t q = hit->GetCharge();
743 Int_t track = hit->Track();
744 Int_t detector = hit->GetDetector();
745 Int_t plane = fGeo->GetPlane(detector);
746 Int_t sector = fGeo->GetSector(detector);
747 Int_t chamber = fGeo->GetChamber(detector);
3551db50 748 Float_t time0 = AliTRDgeometry::GetTime0(plane);
749
750 padPlane = commonParam->GetPadPlane(plane,chamber);
a5cadd36 751 Float_t row0 = padPlane->GetRow0();
752 Float_t col0 = padPlane->GetCol0();
753 Int_t nRowMax = padPlane->GetNrows();
754 Int_t nColMax = padPlane->GetNcols();
793ff80c 755
3becff3c 756 Int_t inDrift = 1;
757 if (!fFixedGeometry) {
758 gGeoManager->SetCurrentPoint(pos);
759 gGeoManager->FindNode();
760 if (strstr(gGeoManager->GetPath(),"/UK")) {
761 inDrift = 0;
762 }
763 }
764
e23fbb27 765 if (fDebug > 1) {
793ff80c 766 printf("Analyze hit no. %d ",iHit);
767 printf("-----------------------------------------------------------\n");
768 hit->Dump();
769 printf("plane = %d, sector = %d, chamber = %d\n"
770 ,plane,sector,chamber);
dde59437 771 printf("nRowMax = %d, nColMax = %d\n"
772 ,nRowMax,nColMax);
773 printf("nTimeTotal = %d\n"
774 ,nTimeTotal);
793ff80c 775 printf("row0 = %f, col0 = %f, time0 = %f\n"
776 ,row0,col0,time0);
a5cadd36 777 printf("samplingRate = %f\n"
778 ,samplingRate);
793ff80c 779 }
780
e23fbb27 781 // Don't analyze test hits and switched off detectors
782 if ((CheckDetector(plane,chamber,sector)) &&
783 (((Int_t) q) != 0)) {
dd56b762 784
e23fbb27 785 if (detector != detectorOld) {
e153aaf6 786
e23fbb27 787 if (fDebug > 1) {
788 printf("<AliTRDdigitizer::MakeDigits> ");
789 printf("Get new container. New det = %d, Old det = %d\n"
790 ,detector,detectorOld);
dd9a6ee3 791 }
e23fbb27 792 // Compress the old one if enabled
793 if ((fCompress) && (detectorOld > -1)) {
794 if (fDebug > 1) {
795 printf("<AliTRDdigitizer::MakeDigits> ");
796 printf("Compress the old container ...");
797 }
798 signals->Compress(1,0);
799 for (iDict = 0; iDict < kNDict; iDict++) {
800 dictionary[iDict]->Compress(1,0);
c1e4b257 801 }
e23fbb27 802 if (fDebug > 1) printf("done\n");
793ff80c 803 }
e23fbb27 804 // Get the new container
805 signals = (AliTRDdataArrayF *) signalsArray->At(detector);
806 if (signals->GetNtime() == 0) {
807 // Allocate a new one if not yet existing
808 if (fDebug > 1) {
809 printf("<AliTRDdigitizer::MakeDigits> ");
810 printf("Allocate a new container ... ");
811 }
812 signals->Allocate(nRowMax,nColMax,nTimeTotal);
793ff80c 813 }
814 else {
e23fbb27 815 // Expand an existing one
816 if (fCompress) {
817 if (fDebug > 1) {
818 printf("<AliTRDdigitizer::MakeDigits> ");
819 printf("Expand an existing container ... ");
820 }
821 signals->Expand();
822 }
793ff80c 823 }
e23fbb27 824 // The same for the dictionary
3becff3c 825 for (iDict = 0; iDict < kNDict; iDict++) {
826 dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict);
827 if (dictionary[iDict]->GetNtime() == 0) {
828 dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
e23fbb27 829 }
3becff3c 830 else {
831 if (fCompress) dictionary[iDict]->Expand();
832 }
e23fbb27 833 }
834 if (fDebug > 1) printf("done\n");
835 detectorOld = detector;
793ff80c 836 }
837
3becff3c 838 if (fFixedGeometry) {
839 // Rotate the sectors on top of each other
0c24ba98 840 fGeo->Rotate(detector,pos,rot);
841 }
3becff3c 842 else {
843 // Use the geoManager
844 Double_t aaa[3];
845 gGeoManager->MasterToLocal(pos,aaa);
846 if (inDrift) {
847 aaa[2] = time0 - (kDrWidth / 2.0 + kAmWidth) + aaa[2];
848 }
849 else {
850 aaa[2] = time0 + aaa[2];
851 }
852 aaa[1] = row0 + padPlane->GetLengthRim() + fGeo->RpadW()
853 - 0.5 * fGeo->GetChamberLength(plane,chamber)
854 + aaa[1];
855 rot[0] = aaa[2];
856 rot[1] = aaa[0];
857 rot[2] = aaa[1];
858 }
e23fbb27 859
ccb4315c 860 // The driftlength. It is negative if the hit is between pad plane and anode wires.
a5cadd36 861 Double_t driftlength = time0 - rot[0];
e23fbb27 862
e23fbb27 863 // Loop over all electrons of this hit
864 // TR photons produce hits with negative charge
865 Int_t nEl = ((Int_t) TMath::Abs(q));
866 for (Int_t iEl = 0; iEl < nEl; iEl++) {
867
868 xyz[0] = rot[0];
869 xyz[1] = rot[1];
870 xyz[2] = rot[2];
871
a328fff9 872 // Stupid patch to take care of TR photons that are absorbed
873 // outside the chamber volume. A real fix would actually need
874 // a more clever implementation of the TR hit generation
81a6930e 875 if (q < 0.0) {
a5cadd36 876 if ((xyz[2] < padPlane->GetRowEnd()) ||
877 (xyz[2] > padPlane->GetRow0())) {
81a6930e 878 if (iEl == 0) {
879 printf("<AliTRDdigitizer::MakeDigits> ");
a5cadd36 880 printf("Hit outside of sensitive volume, row (z=%f, row0=%f, rowE=%f)\n"
881 ,xyz[2],padPlane->GetRow0(),padPlane->GetRowEnd());
81a6930e 882 }
883 continue;
a328fff9 884 }
ccb4315c 885 Float_t tt = driftlength + kAmWidth;
886 if (tt < 0.0 || tt > kDrWidth + 2.*kAmWidth) {
81a6930e 887 if (iEl == 0) {
888 printf("<AliTRDdigitizer::MakeDigits> ");
889 printf("Hit outside of sensitive volume, time (Q = %d)\n",((Int_t) q));
890 }
891 continue;
a328fff9 892 }
a328fff9 893 }
894
3551db50 895 // Get row and col of unsmeared electron to retrieve drift velocity
e23fbb27 896 // The pad row (z-direction)
a5cadd36 897 Int_t rowE = padPlane->GetPadRowNumber(xyz[2]);
898 if (rowE < 0) continue;
899 Double_t rowOffset = padPlane->GetPadRowOffset(rowE,xyz[2]);
e23fbb27 900
901 // The pad column (rphi-direction)
de4b10e5 902 Float_t offsetTilt = padPlane->GetTiltOffset(rowOffset); // MI change
903 Int_t colE = padPlane->GetPadColNumber(xyz[1]+offsetTilt,rowOffset);
904 if (colE < 0) continue;
905 Double_t colOffset = padPlane->GetPadColOffset(colE,xyz[1]+offsetTilt);
ccb4315c 906
3551db50 907 Float_t driftvelocity = calibration->GetVdrift(detector, colE, rowE);
908
909 // Normalised drift length
910 Double_t absdriftlength = TMath::Abs(driftlength);
911 if (commonParam->ExBOn())
912 absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
913
914 // Electron attachment
915 if (simParam->ElAttachOn()) {
916 if (gRandom->Rndm() < (absdriftlength * elAttachProp)) continue;
917 }
918
919 // Apply the diffusion smearing
920 if (simParam->DiffusionOn()) {
921 if (!(Diffusion(driftvelocity, absdriftlength,xyz))) continue;
922 }
923
924 // Apply E x B effects (depends on drift direction)
925 if (commonParam->ExBOn()) {
926 if (!(ExB(driftvelocity, driftlength,xyz))) continue;
927 }
928
929 // The electron position after diffusion and ExB in pad coordinates.
930 // The pad row (z-direction)
e02e7d86 931 rowE = padPlane->GetPadRowNumber(xyz[2]);
3551db50 932 if (rowE < 0) continue;
e02e7d86 933 rowOffset = padPlane->GetPadRowOffset(rowE,xyz[2]);
3551db50 934
935 // The pad column (rphi-direction)
e02e7d86 936 offsetTilt = padPlane->GetTiltOffset(rowOffset); // MI change
937 colE = padPlane->GetPadColNumber(xyz[1]+offsetTilt,rowOffset);
3551db50 938 if (colE < 0) continue;
e02e7d86 939 colOffset = padPlane->GetPadColOffset(colE,xyz[1]+offsetTilt);
3551db50 940
e02e7d86 941 // Also re-retrieve drift velocity because col and row may have changed
3551db50 942 driftvelocity = calibration->GetVdrift(detector, colE, rowE);
943 Float_t t0 = calibration->GetT0(detector, colE, rowE);
944
945 // Convert the position to drift time, using either constant drift velocity or
ccb4315c 946 // time structure of drift cells (non-isochronity, GARFIELD calculation).
a5cadd36 947 Double_t drifttime;
3551db50 948 if (simParam->TimeStructOn()) {
ccb4315c 949 // Get z-position with respect to anode wire:
3551db50 950 //Double_t Z = xyz[2] - row0 + simParam->GetAnodeWireOffset();
951 Double_t Z = row0 - xyz[2] + simParam->GetAnodeWireOffset();
ccb4315c 952 Z -= ((Int_t)(2*Z))/2.;
953 if (Z>0.25) Z = 0.5-Z;
954 // use drift time map (GARFIELD)
3551db50 955 drifttime = TimeStruct(driftvelocity, time0 - xyz[0] + kAmWidth, Z);
a5cadd36 956 }
957 else {
ccb4315c 958 // use constant drift velocity
3551db50 959 drifttime = TMath::Abs(time0 - xyz[0]) / driftvelocity;
e23fbb27 960 }
ccb4315c 961
e23fbb27 962 // Apply the gas gain including fluctuations
a5cadd36 963 Double_t ggRndm = 0.0;
e23fbb27 964 do {
965 ggRndm = gRandom->Rndm();
966 } while (ggRndm <= 0);
3551db50 967 Int_t signal = (Int_t) (-(simParam->GetGasGain()) * TMath::Log(ggRndm));
e23fbb27 968
969 // Apply the pad response
cc7cef99 970 if (simParam->PRFOn()) {
e23fbb27 971 // The distance of the electron to the center of the pad
972 // in units of pad width
a5cadd36 973 //Double_t dist = - colOffset / padPlane->GetColSize(colE);
e02e7d86 974 Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
a5cadd36 975 / padPlane->GetColSize(colE);
e02e7d86 976
6a739e92 977 if (!(calibration->PadResponse(signal,dist,plane,padSignal))) continue;
793ff80c 978 }
e23fbb27 979 else {
980 padSignal[0] = 0.0;
981 padSignal[1] = signal;
982 padSignal[2] = 0.0;
983 }
984
6a739e92 985 // The time bin (always positive), with t0 correction
986 Double_t timeBinIdeal = drifttime * samplingRate + t0;
a305677e 987 // Protection according to MI
988 if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
989 timeBinIdeal = 2 * nTimeTotal;
990 }
6a739e92 991 Int_t timeBinTruncated = (Int_t) timeBinIdeal;
3551db50 992 // The distance of the position to the middle of the timebin
6a739e92 993 Double_t timeOffset = ((Float_t) timeBinTruncated + 0.5 - timeBinIdeal) / samplingRate;
994
e23fbb27 995 // Sample the time response inside the drift region
996 // + additional time bins before and after.
997 // The sampling is done always in the middle of the time bin
6a739e92 998 for (Int_t iTimeBin = TMath::Max(timeBinTruncated, 0);
999 iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal);
1000 iTimeBin++) {
e23fbb27 1001
1002 // Apply the time response
a5cadd36 1003 Double_t timeResponse = 1.0;
1004 Double_t crossTalk = 0.0;
6a739e92 1005 Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
3551db50 1006 if (simParam->TRFOn()) {
1007 timeResponse = simParam->TimeResponse(time);
1008 }
1009
1010 if (simParam->CTOn()) {
1011 crossTalk = simParam->CrossTalk(time);
e23fbb27 1012 }
1013
1014 signalOld[0] = 0.0;
1015 signalOld[1] = 0.0;
1016 signalOld[2] = 0.0;
f7336fa3 1017
e23fbb27 1018 for (iPad = 0; iPad < kNpad; iPad++) {
1019
1020 Int_t colPos = colE + iPad - 1;
1021 if (colPos < 0) continue;
1022 if (colPos >= nColMax) break;
1023
1024 // Add the signals
dde59437 1025 Int_t iCurrentTimeBin = iTimeBin;
e23fbb27 1026 signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin);
1027 if( colPos != colE ) {
1028 signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk);
1029 }
1030 else {
1031 signalOld[iPad] += padSignal[iPad] * timeResponse;
1032 }
1033 signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]);
1034
1035 // Store the track index in the dictionary
1036 // Note: We store index+1 in order to allow the array to be compressed
3becff3c 1037 if (signalOld[iPad] > 0) {
e23fbb27 1038 for (iDict = 0; iDict < kNDict; iDict++) {
1039 Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE
1040 ,colPos
1041 ,iCurrentTimeBin);
1042 if (oldTrack == track+1) break;
1043 if (oldTrack == 0) {
1044 dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1);
1045 break;
1046 }
71d9fa7b 1047 }
1048 }
872a7aba 1049
e23fbb27 1050 } // Loop: pads
f7336fa3 1051
e23fbb27 1052 } // Loop: time bins
f7336fa3 1053
e23fbb27 1054 } // Loop: electrons of a single hit
f7336fa3 1055
e23fbb27 1056 } // If: detector and test hit
f7336fa3 1057
e23fbb27 1058 hit = (AliTRDhit *) fTRD->NextHit();
f7336fa3 1059
e23fbb27 1060 } // Loop: hits of one primary track
1061
1062 } // Loop: primary tracks
1063
1064 if (fDebug > 0) {
1065 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 1066 printf("Finished analyzing %d hits\n",countHits);
1067 }
793ff80c 1068
0c24ba98 1069 // The coupling factor
3551db50 1070 Double_t coupling = simParam->GetPadCoupling()
1071 * simParam->GetTimeCoupling();
0c24ba98 1072
1073 // The conversion factor
a5cadd36 1074 Double_t convert = kEl2fC
3551db50 1075 * simParam->GetChipGain();
6244debe 1076
793ff80c 1077 // Loop through all chambers to finalize the digits
0c24ba98 1078 Int_t iDetBeg = 0;
1079 Int_t iDetEnd = AliTRDgeometry::Ndet();
0c24ba98 1080 for (Int_t iDet = iDetBeg; iDet < iDetEnd; iDet++) {
793ff80c 1081
872a7aba 1082 Int_t plane = fGeo->GetPlane(iDet);
1083 Int_t sector = fGeo->GetSector(iDet);
1084 Int_t chamber = fGeo->GetChamber(iDet);
3551db50 1085 Int_t nRowMax = commonParam->GetRowMax(plane,chamber,sector);
1086 Int_t nColMax = commonParam->GetColMax(plane);
793ff80c 1087
e23fbb27 1088 Double_t *inADC = new Double_t[nTimeTotal];
1089 Double_t *outADC = new Double_t[nTimeTotal];
1090
1091 if (fDebug > 0) {
1092 printf("<AliTRDdigitizer::MakeDigits> ");
793ff80c 1093 printf("Digitization for chamber %d\n",iDet);
1094 }
da581aea 1095
793ff80c 1096 // Add a container for the digits of this detector
abaf1f1d 1097 digits = fDigitsManager->GetDigits(iDet);
793ff80c 1098 // Allocate memory space for the digits buffer
0c24ba98 1099 if (digits->GetNtime() == 0) {
1100 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1101 }
0c24ba98 1102
793ff80c 1103 // Get the signal container
1104 signals = (AliTRDdataArrayF *) signalsArray->At(iDet);
1105 if (signals->GetNtime() == 0) {
1106 // Create missing containers
872a7aba 1107 signals->Allocate(nRowMax,nColMax,nTimeTotal);
793ff80c 1108 }
1109 else {
1110 // Expand the container if neccessary
1111 if (fCompress) signals->Expand();
1112 }
1113 // Create the missing dictionary containers
3becff3c 1114 for (iDict = 0; iDict < kNDict; iDict++) {
1115 dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
1116 if (dictionary[iDict]->GetNtime() == 0) {
1117 dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
0c24ba98 1118 }
793ff80c 1119 }
f7336fa3 1120
793ff80c 1121 Int_t nDigits = 0;
1122
6244debe 1123 // Don't create noise in detectors that are switched off
1124 if (CheckDetector(plane,chamber,sector)) {
1125
1126 // Create the digits for this chamber
872a7aba 1127 for (iRow = 0; iRow < nRowMax; iRow++ ) {
1128 for (iCol = 0; iCol < nColMax; iCol++ ) {
6244debe 1129
e23fbb27 1130 // Create summable digits
1131 if (fSDigits) {
6244debe 1132
e23fbb27 1133 for (iTime = 0; iTime < nTimeTotal; iTime++) {
872a7aba 1134 Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
abaf1f1d 1135 signalAmp *= fSDigitsScale;
e23fbb27 1136 signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9);
abaf1f1d 1137 Int_t adc = (Int_t) signalAmp;
4487dad0 1138 if (adc > 0) nDigits++;
872a7aba 1139 digits->SetDataUnchecked(iRow,iCol,iTime,adc);
c1e4b257 1140 }
6244debe 1141
e23fbb27 1142 }
1143 // Create normal digits
1144 else {
6244debe 1145
e23fbb27 1146 for (iTime = 0; iTime < nTimeTotal; iTime++) {
1147 Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
11dc3a9e 1148
0c24ba98 1149 // Pad and time coupling
1150 signalAmp *= coupling;
11dc3a9e 1151
1152 Float_t padgain = calibration->GetGainFactor(iDet, iCol, iRow);
7754cd1f 1153 if (padgain<=0) {
1154 TString error;
1155 error.Form("Not a valid gain %f, %d %d %d\n", padgain, iDet, iCol, iRow);
1156 AliError(error);
1157 }
7eea788e 1158 signalAmp *= padgain;
11dc3a9e 1159
7e582e9f 1160 // Add the noise, starting from minus ADC baseline in electrons
3551db50 1161 Double_t baselineEl = simParam->GetADCbaseline() * (simParam->GetADCinRange()
11dc3a9e 1162 / simParam->GetADCoutRange())
7e582e9f 1163 / convert;
3551db50 1164 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
7e582e9f 1165 ,-baselineEl);
6244debe 1166 // Convert to mV
1167 signalAmp *= convert;
7e582e9f 1168 // Add ADC baseline in mV
3551db50 1169 signalAmp += simParam->GetADCbaseline() * (simParam->GetADCinRange()
1170 / simParam->GetADCoutRange());
11dc3a9e 1171 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
6244debe 1172 // signal is larger than fADCinRange
1173 Int_t adc = 0;
3551db50 1174 if (signalAmp >= simParam->GetADCinRange()) {
1175 adc = ((Int_t) simParam->GetADCoutRange());
6244debe 1176 }
1177 else {
11dc3a9e 1178 adc = TMath::Nint(signalAmp * (simParam->GetADCoutRange()
1179 / simParam->GetADCinRange()));
6244debe 1180 }
11dc3a9e 1181
e23fbb27 1182 inADC[iTime] = adc;
1183 outADC[iTime] = adc;
1184 }
6244debe 1185
e23fbb27 1186 for (iTime = 0; iTime < nTimeTotal; iTime++) {
6244debe 1187 // Store the amplitude of the digit if above threshold
3551db50 1188 if (outADC[iTime] > simParam->GetADCthreshold()) {
e23fbb27 1189 if (fDebug > 2) {
1190 printf(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n"
1191 ,iRow,iCol,iTime,outADC[iTime]);
6244debe 1192 }
1193 nDigits++;
3583ac1a 1194 digits->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime]));
6244debe 1195 }
6244debe 1196 }
1197
1198 }
e23fbb27 1199
6244debe 1200 }
793ff80c 1201 }
6244debe 1202
793ff80c 1203 }
1204
1205 // Compress the arrays
3becff3c 1206 digits->Compress(1,0);
1207 for (iDict = 0; iDict < kNDict; iDict++) {
1208 dictionary[iDict]->Compress(1,0);
1209 }
f7336fa3 1210
3becff3c 1211 totalSizeDigits += digits->GetSize();
1212 totalSizeDict0 += dictionary[0]->GetSize();
1213 totalSizeDict1 += dictionary[1]->GetSize();
1214 totalSizeDict2 += dictionary[2]->GetSize();
0c24ba98 1215
3becff3c 1216 Float_t nPixel = nRowMax * nColMax * nTimeTotal;
1217 if (fDebug > 0) {
1218 printf("<AliTRDdigitizer::MakeDigits> ");
1219 printf("Found %d digits in detector %d (%3.0f).\n"
1220 ,nDigits,iDet
1221 ,100.0 * ((Float_t) nDigits) / nPixel);
1222 }
abaf1f1d 1223
3becff3c 1224 if (fCompress) signals->Compress(1,0);
f7336fa3 1225
e23fbb27 1226 delete [] inADC;
1227 delete [] outADC;
1228
f7336fa3 1229 }
1230
0c24ba98 1231 if (signalsArray) {
1232 delete signalsArray;
1233 signalsArray = 0;
1234 }
1235
e23fbb27 1236 if (fDebug > 0) {
1237 printf("<AliTRDdigitizer::MakeDigits> ");
abaf1f1d 1238 printf("Total number of analyzed hits = %d\n",countHits);
3becff3c 1239 printf("<AliTRDdigitizer::MakeDigits> ");
1240 printf("Total digits data size = %d, %d, %d, %d\n",totalSizeDigits
1241 ,totalSizeDict0
1242 ,totalSizeDict1
1243 ,totalSizeDict2);
abaf1f1d 1244 }
1245
1246 return kTRUE;
1247
1248}
1249
1250//_____________________________________________________________________________
1251void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
1252{
1253 //
1254 // Add a digits manager for s-digits to the input list.
1255 //
1256
1257 fSDigitsManagerList->Add(man);
1258
1259}
1260
b1113c6b 1261//_____________________________________________________________________________
1262void AliTRDdigitizer::DeleteSDigitsManager()
1263{
1264 //
1265 // Removes digits manager from the input list.
1266 //
1267
1268 fSDigitsManagerList->Delete();
1269
1270}
1271
abaf1f1d 1272//_____________________________________________________________________________
1273Bool_t AliTRDdigitizer::ConvertSDigits()
1274{
1275 //
1276 // Converts s-digits to normal digits
1277 //
1278
1279 // Number of track dictionary arrays
1280 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1281
1282 // Converts number of electrons to fC
1283 const Double_t kEl2fC = 1.602E-19 * 1.0E15;
1284
1285 Int_t iDict = 0;
e23fbb27 1286 Int_t iRow;
1287 Int_t iCol;
1288 Int_t iTime;
abaf1f1d 1289
3551db50 1290 AliTRDSimParam* simParam = AliTRDSimParam::Instance();
1291 if (!simParam)
1292 {
1293 printf("<AliTRDdigitizer::ConvertSDigits> ");
1294 printf("Could not get simulation params\n");
1295 return kFALSE;
1296 }
1297
1298 AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
1299 if (!commonParam)
1300 {
1301 printf("<AliTRDdigitizer::ConvertSDigits> ");
1302 printf("Could not get common params\n");
1303 return kFALSE;
1304 }
1305
1306
1307 AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
1308 if (!calibration)
1309 {
1310 printf("<AliTRDdigitizer::ConvertSDigits> ");
1311 printf("Could not get calibration object\n");
1312 return kFALSE;
1313 }
1314
abaf1f1d 1315 Double_t sDigitsScale = 1.0 / GetSDigitsScale();
3551db50 1316 Double_t noise = simParam->GetNoise();
1317 Double_t padCoupling = simParam->GetPadCoupling();
1318 Double_t timeCoupling = simParam->GetTimeCoupling();
1319 Double_t chipGain = simParam->GetChipGain();
0c24ba98 1320 Double_t coupling = padCoupling * timeCoupling;
1321 Double_t convert = kEl2fC * chipGain;
3551db50 1322 Double_t adcInRange = simParam->GetADCinRange();
1323 Double_t adcOutRange = simParam->GetADCoutRange();
1324 Int_t adcThreshold = simParam->GetADCthreshold();
1325 Int_t adcBaseline = simParam->GetADCbaseline();
abaf1f1d 1326
1327 AliTRDdataArrayI *digitsIn;
1328 AliTRDdataArrayI *digitsOut;
1329 AliTRDdataArrayI *dictionaryIn[kNDict];
1330 AliTRDdataArrayI *dictionaryOut[kNDict];
1331
3551db50 1332 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1333
abaf1f1d 1334 // Loop through the detectors
1335 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
da581aea 1336
e23fbb27 1337 if (fDebug > 0) {
1338 printf("<AliTRDdigitizer::ConvertSDigits> ");
abaf1f1d 1339 printf("Convert detector %d to digits.\n",iDet);
1340 }
1341
1342 Int_t plane = fGeo->GetPlane(iDet);
1343 Int_t sector = fGeo->GetSector(iDet);
1344 Int_t chamber = fGeo->GetChamber(iDet);
3551db50 1345 Int_t nRowMax = commonParam->GetRowMax(plane,chamber,sector);
1346 Int_t nColMax = commonParam->GetColMax(plane);
abaf1f1d 1347
e23fbb27 1348 Double_t *inADC = new Double_t[nTimeTotal];
1349 Double_t *outADC = new Double_t[nTimeTotal];
1350
abaf1f1d 1351 digitsIn = fSDigitsManager->GetDigits(iDet);
1352 digitsIn->Expand();
1353 digitsOut = fDigitsManager->GetDigits(iDet);
1354 digitsOut->Allocate(nRowMax,nColMax,nTimeTotal);
1355 for (iDict = 0; iDict < kNDict; iDict++) {
1356 dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
1357 dictionaryIn[iDict]->Expand();
1358 dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
1359 dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
1360 }
1361
e23fbb27 1362 for (iRow = 0; iRow < nRowMax; iRow++ ) {
1363 for (iCol = 0; iCol < nColMax; iCol++ ) {
abaf1f1d 1364
11dc3a9e 1365 for (iTime = 0; iTime < nTimeTotal; iTime++) {
abaf1f1d 1366 Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime);
1367 signal *= sDigitsScale;
7754cd1f 1368 Float_t padgain = calibration->GetGainFactor(iDet, iCol, iRow);
1369 if (padgain<=0) {
1370 TString error;
1371 error.Form("Not a valid gain %f, %d %d %d\n", padgain, iDet, iCol, iRow);
1372 AliError(error);
1373 }
11dc3a9e 1374
7754cd1f 1375 signal *= padgain;
0c24ba98 1376 // Pad and time coupling
1377 signal *= coupling;
7e582e9f 1378 // Add the noise, starting from minus ADC baseline in electrons
1379 Double_t baselineEl = adcBaseline * (adcInRange / adcOutRange) / convert;
1380 signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),-baselineEl);
abaf1f1d 1381 // Convert to mV
1382 signal *= convert;
7e582e9f 1383 // add ADC baseline in mV
1384 signal += adcBaseline * (adcInRange / adcOutRange);
11dc3a9e 1385 // Convert to ADC counts. Set the overflow-bit adcOutRange if the
abaf1f1d 1386 // signal is larger than adcInRange
1387 Int_t adc = 0;
1388 if (signal >= adcInRange) {
1389 adc = ((Int_t) adcOutRange);
1390 }
1391 else {
11dc3a9e 1392 adc = TMath::Nint(signal * (adcOutRange / adcInRange));
abaf1f1d 1393 }
e23fbb27 1394 inADC[iTime] = adc;
1395 outADC[iTime] = adc;
1396 }
1397
11dc3a9e 1398 for (iTime = 0; iTime < nTimeTotal; iTime++) {
abaf1f1d 1399 // Store the amplitude of the digit if above threshold
e23fbb27 1400 if (outADC[iTime] > adcThreshold) {
3583ac1a 1401 digitsOut->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime]));
e23fbb27 1402 // Copy the dictionary
1403 for (iDict = 0; iDict < kNDict; iDict++) {
1404 Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1405 dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track);
1406 }
abaf1f1d 1407 }
abaf1f1d 1408 }
e23fbb27 1409
abaf1f1d 1410 }
1411 }
1412
1413 if (fCompress) {
1414 digitsIn->Compress(1,0);
1415 digitsOut->Compress(1,0);
1416 for (iDict = 0; iDict < kNDict; iDict++) {
1417 dictionaryIn[iDict]->Compress(1,0);
1418 dictionaryOut[iDict]->Compress(1,0);
1419 }
1420 }
1421
e23fbb27 1422 delete [] inADC;
1423 delete [] outADC;
1424
abaf1f1d 1425 }
f7336fa3 1426
1427 return kTRUE;
1428
1429}
1430
16bf9884 1431//_____________________________________________________________________________
abaf1f1d 1432Bool_t AliTRDdigitizer::MergeSDigits()
16bf9884 1433{
1434 //
abaf1f1d 1435 // Merges the input s-digits:
1436 // - The amplitude of the different inputs are summed up.
1437 // - Of the track IDs from the input dictionaries only one is
1438 // kept for each input. This works for maximal 3 different merged inputs.
16bf9884 1439 //
1440
abaf1f1d 1441 // Number of track dictionary arrays
1442 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1443
3551db50 1444 AliTRDSimParam* simParam = AliTRDSimParam::Instance();
1445 if (!simParam)
1446 {
1447 printf("<AliTRDdigitizer::MergeSDigits> ");
1448 printf("Could not get simulation params\n");
1449 return kFALSE;
1450 }
1451
1452 AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
1453 if (!commonParam)
1454 {
1455 printf("<AliTRDdigitizer::MergeSDigits> ");
1456 printf("Could not get common params\n");
1457 return kFALSE;
1458 }
1459
1460 AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
1461 if (!calibration)
1462 {
1463 printf("<AliTRDdigitizer::MergeSDigits> ");
1464 printf("Could not get calibration object\n");
1465 return kFALSE;
1466 }
1467
abaf1f1d 1468 Int_t iDict = 0;
e23fbb27 1469 Int_t jDict = 0;
abaf1f1d 1470
1471 AliTRDdataArrayI *digitsA;
1472 AliTRDdataArrayI *digitsB;
1473 AliTRDdataArrayI *dictionaryA[kNDict];
1474 AliTRDdataArrayI *dictionaryB[kNDict];
1475
1476 // Get the first s-digits
1477 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
1478 if (!fSDigitsManager) return kFALSE;
1479
1480 // Loop through the other sets of s-digits
1481 AliTRDdigitsManager *mergeSDigitsManager;
1482 mergeSDigitsManager = (AliTRDdigitsManager *)
1483 fSDigitsManagerList->After(fSDigitsManager);
1484
e23fbb27 1485 if (fDebug > 0) {
abaf1f1d 1486 if (mergeSDigitsManager) {
e23fbb27 1487 printf("<AliTRDdigitizer::MergeSDigits> ");
1488 printf("Merge %d input files.\n",fSDigitsManagerList->GetSize());
abaf1f1d 1489 }
1490 else {
e23fbb27 1491 printf("<AliTRDdigitizer::MergeSDigits> ");
abaf1f1d 1492 printf("Only one input file.\n");
1493 }
1494 }
1495
3551db50 1496 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1497
abaf1f1d 1498 Int_t iMerge = 0;
1499 while (mergeSDigitsManager) {
1500
1501 iMerge++;
1502
1503 // Loop through the detectors
1504 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1505
1506 Int_t plane = fGeo->GetPlane(iDet);
1507 Int_t sector = fGeo->GetSector(iDet);
1508 Int_t chamber = fGeo->GetChamber(iDet);
3551db50 1509 Int_t nRowMax = commonParam->GetRowMax(plane,chamber,sector);
1510 Int_t nColMax = commonParam->GetColMax(plane);
abaf1f1d 1511
1512 // Loop through the pixels of one detector and add the signals
1513 digitsA = fSDigitsManager->GetDigits(iDet);
1514 digitsB = mergeSDigitsManager->GetDigits(iDet);
1515 digitsA->Expand();
1516 digitsB->Expand();
1517 for (iDict = 0; iDict < kNDict; iDict++) {
1518 dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
1519 dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict);
1520 dictionaryA[iDict]->Expand();
1521 dictionaryB[iDict]->Expand();
1522 }
1523
4487dad0 1524 // Merge only detectors that contain a signal
1525 Bool_t doMerge = kTRUE;
1526 if (fMergeSignalOnly) {
1527 if (digitsA->GetOverThreshold(0) == 0) {
1528 doMerge = kFALSE;
1529 }
abaf1f1d 1530 }
1531
4487dad0 1532 if (doMerge) {
abaf1f1d 1533
4487dad0 1534 if (fDebug > 0) {
1535 printf("<AliTRDdigitizer::MergeSDigits> ");
1536 printf("Merge detector %d of input no.%d\n",iDet,iMerge+1);
1537 }
abaf1f1d 1538
4487dad0 1539 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1540 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1541 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1542
1543 // Add the amplitudes of the summable digits
1544 Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime);
1545 Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime);
1546 ampA += ampB;
1547 digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA);
1548
1549 // Add the mask to the track id if defined.
1550 for (iDict = 0; iDict < kNDict; iDict++) {
1551 Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1552 if ((fMasks) && (trackB > 0)) {
1553 for (jDict = 0; jDict < kNDict; jDict++) {
1554 Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1555 if (trackA == 0) {
1556 trackA = trackB + fMasks[iMerge];
1557 dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA);
1558 }
1559 }
1560 }
e23fbb27 1561 }
abaf1f1d 1562
4487dad0 1563 }
abaf1f1d 1564 }
4487dad0 1565 }
1566
abaf1f1d 1567 }
1568
1569 if (fCompress) {
1570 digitsA->Compress(1,0);
1571 digitsB->Compress(1,0);
1572 for (iDict = 0; iDict < kNDict; iDict++) {
1573 dictionaryA[iDict]->Compress(1,0);
1574 dictionaryB[iDict]->Compress(1,0);
1575 }
1576 }
1577
1578 }
1579
1580 // The next set of s-digits
1581 mergeSDigitsManager = (AliTRDdigitsManager *)
1582 fSDigitsManagerList->After(mergeSDigitsManager);
1583
1584 }
1585
16bf9884 1586 return kTRUE;
1587
1588}
1589
abaf1f1d 1590//_____________________________________________________________________________
1591Bool_t AliTRDdigitizer::SDigits2Digits()
1592{
1593 //
1594 // Merges the input s-digits and converts them to normal digits
1595 //
1596
1597 if (!MergeSDigits()) return kFALSE;
1598
1599 return ConvertSDigits();
1600
1601}
1602
793ff80c 1603//_____________________________________________________________________________
1604Bool_t AliTRDdigitizer::CheckDetector(Int_t plane, Int_t chamber, Int_t sector)
1605{
1606 //
1607 // Checks whether a detector is enabled
1608 //
1609
1610 if ((fTRD->GetSensChamber() >= 0) &&
1611 (fTRD->GetSensChamber() != chamber)) return kFALSE;
1612 if ((fTRD->GetSensPlane() >= 0) &&
c1e4b257 1613 (fTRD->GetSensPlane() != plane)) return kFALSE;
793ff80c 1614 if ( fTRD->GetSensSector() >= 0) {
1615 Int_t sens1 = fTRD->GetSensSector();
1616 Int_t sens2 = sens1 + fTRD->GetSensSectorRange();
1617 sens2 -= ((Int_t) (sens2 / AliTRDgeometry::Nsect()))
1618 * AliTRDgeometry::Nsect();
1619 if (sens1 < sens2) {
1620 if ((sector < sens1) || (sector >= sens2)) return kFALSE;
1621 }
1622 else {
1623 if ((sector < sens1) && (sector >= sens2)) return kFALSE;
1624 }
1625 }
1626
1627 return kTRUE;
1628
1629}
1630
f7336fa3 1631//_____________________________________________________________________________
0a29d0f1 1632Bool_t AliTRDdigitizer::WriteDigits() const
f7336fa3 1633{
1634 //
1635 // Writes out the TRD-digits and the dictionaries
1636 //
1637
bdbb05bb 1638 //Write parameters
1639 fRunLoader->CdGAFile();
bdbb05bb 1640
da581aea 1641 // Store the digits and the dictionary in the tree
abaf1f1d 1642 return fDigitsManager->WriteDigits();
f7336fa3 1643
1644}
793ff80c 1645
8e64dd77 1646//_____________________________________________________________________________
88cb7938 1647void AliTRDdigitizer::InitOutput(Int_t iEvent)
8e64dd77 1648{
1649 //
1650 // Initializes the output branches
1651 //
1652
1653 fEvent = iEvent;
88cb7938 1654
1655 if (!fRunLoader)
1656 {
1657 Error("InitOutput","Run Loader is NULL");
1658 return;
1659 }
1660 AliLoader* loader = fRunLoader->GetLoader("TRDLoader");
1661 if (!loader)
1662 {
1663 Error("Open","Can not get TRD loader from Run Loader");
1664 return;
1665 }
1666
1667 TTree* tree = 0;
1668
1669 if (fSDigits)
1670 {
1671 //if we produce SDigits
1672 tree = loader->TreeS();
1673 if (!tree)
1674 {
1675 loader->MakeTree("S");
1676 tree = loader->TreeS();
1677 }
1678 }
1679 else
1680 {//if we produce Digits
1681 tree = loader->TreeD();
1682 if (!tree)
1683 {
1684 loader->MakeTree("D");
1685 tree = loader->TreeD();
1686 }
1687 }
1688 fDigitsManager->SetEvent(iEvent);
1689 fDigitsManager->MakeBranch(tree);
8e64dd77 1690
1691}
3551db50 1692
1693//_____________________________________________________________________________
1694Double_t AliTRDdigitizer::TimeStruct(Float_t vdrift, Double_t dist, Double_t z)
1695{
1696 //
1697 // Applies the time structure of the drift cells (by C.Lippmann).
1698 // The drift time of electrons to the anode wires depends on the
1699 // distance to the wire (z) and on the position in the drift region.
1700 //
1701 // input :
1702 // dist = radial distance from (cathode) pad plane [cm]
1703 // z = distance from anode wire (parallel to cathode planes) [cm]
1704 //
1705 // output :
1706 // tdrift = the drift time of an electron at the given position
1707 //
1708 // We interpolate between the drift time values at the two drift
1709 // velocities fVDlo and fVDhi, being smaller and larger than
1710 // fDriftVelocity. We use the two stored drift time maps fTimeStruct1
1711 // and fTimeStruct2, calculated for the two mentioned drift velocities.
1712 //
1713
1714 SampleTimeStruct(vdrift);
1715
1716 // indices:
1717 Int_t r1 = (Int_t)(10*dist);
3551db50 1718 if (r1<0) r1 = 0;
1719 if (r1>37) r1 = 37;
90071230 1720 Int_t r2 = r1+1;
1721 if (r2<0) r2 = 0;
1722 if (r2>37) r2 = 37;
3551db50 1723 const Int_t kz1 = (Int_t)(100*z/2.5);
1724 const Int_t kz2 = kz1+1;
1725
1726 if (r1<0 || r1>37 || kz1<0 || kz1>10) {
7754cd1f 1727 printf("<AliTRDdigitizer::TimeStruct> Warning. Indices out of range: ");
3551db50 1728 printf("dist=%.2f, z=%.2f, r1=%d, kz1=%d\n",dist,z,r1,kz1);
1729 }
1730
1731 const Float_t ky111 = fTimeStructInfo.fTimeStruct1[r1+38*kz1];
1732 const Float_t ky221 = (r2 <= 37 && kz2 <= 10) ? fTimeStructInfo.fTimeStruct1[r2+38*kz2] : fTimeStructInfo.fTimeStruct1[37+38*10];
1733 const Float_t ky121 = (kz2 <= 10) ? fTimeStructInfo.fTimeStruct1[r1+38*kz2] : fTimeStructInfo.fTimeStruct1[r1+38*10];
1734 const Float_t ky211 = (r2 <= 37) ? fTimeStructInfo.fTimeStruct1[r2+38*kz1] : fTimeStructInfo.fTimeStruct1[37+38*kz1];
1735
1736 // 2D Interpolation, lower drift time map
1737 const Float_t ky11 = (ky211-ky111)*10*dist + ky111 - (ky211-ky111)*r1;
1738 const Float_t ky21 = (ky221-ky121)*10*dist + ky121 - (ky221-ky121)*r1;
1739
1740 const Float_t ky112 = fTimeStructInfo.fTimeStruct2[r1+38*kz1];
1741 const Float_t ky222 = (r2 <= 37 && kz2 <= 10) ? fTimeStructInfo.fTimeStruct2[r2+38*kz2] : fTimeStructInfo.fTimeStruct2[37+38*10];
1742 const Float_t ky122 = (kz2 <= 10) ? fTimeStructInfo.fTimeStruct2[r1+38*kz2] : fTimeStructInfo.fTimeStruct2[r1+38*10];
1743 const Float_t ky212 = (r2 <= 37) ? fTimeStructInfo.fTimeStruct2[r2+38*kz1] : fTimeStructInfo.fTimeStruct2[37+38*kz1];
1744
1745 // 2D Interpolation, larger drift time map
1746 const Float_t ky12 = (ky212-ky112)*10*dist + ky112 - (ky212-ky112)*r1;
1747 const Float_t ky22 = (ky222-ky122)*10*dist + ky122 - (ky222-ky122)*r1;
1748
1749 // dist now is the drift distance to the anode wires (negative if electrons are
1750 // between anode wire plane and cathode pad plane)
1751 dist -= AliTRDgeometry::AmThick()/2.0;
1752
1753 // Get the drift times for the drift velocities fVDlo and fVDhi
1754 const Float_t ktdrift1 =
1755 ( TMath::Abs(dist)>0.005 || z>0.005 ) ? (ky21-ky11)*100*z/2.5+ky11-(ky21-ky11)*kz1 : 0.0;
1756 const Float_t ktdrift2 =
1757 ( TMath::Abs(dist)>0.005 || z>0.005 ) ? (ky22-ky12)*100*z/2.5+ky12-(ky22-ky12)*kz1 : 0.0;
1758
1759 // 1D Interpolation between the values at fVDlo and fVDhi
1760 Float_t a = (ktdrift2 - ktdrift1) / (fTimeStructInfo.fVDhi - fTimeStructInfo.fVDlo);
1761 Float_t b = ktdrift2 - a * fTimeStructInfo.fVDhi;
1762
1763
1764 //printf("(%.2f, %.2f): %f, %f -> %f\n",
1765 // dist+AliTRDgeometry::AmThick()/2.0, z, ktdrift1, ktdrift2, a*fDriftVelocity+b);
1766
1767 return a * vdrift + b;
1768
1769}
1770
1771//_____________________________________________________________________________
1772void AliTRDdigitizer::SampleTimeStruct(Float_t vdrift)
1773{
1774 //
1775 // Samples the timing structure of a drift cell
1776 // Drift Time data calculated with Garfield (by C.Lippmann)
1777 //
1778
1779 //TODO make caching proper, if same timing structure is selected: do not update timestructs!
1780
1781 if (vdrift == fTimeStructInfo.fLastVdrift)
1782 return;
1783
1784 fTimeStructInfo.fLastVdrift = vdrift;
1785
1786 // drift time maps are saved for some drift velocity values (in drift region):
1787 Float_t fVDsmp[8];
1788 fVDsmp[0] = 1.032;
1789 fVDsmp[1] = 1.158;
1790 fVDsmp[2] = 1.299;
1791 fVDsmp[3] = 1.450;
1792 fVDsmp[4] = 1.610;
1793 fVDsmp[5] = 1.783;
1794 fVDsmp[6] = 1.959;
1795 fVDsmp[7] = 2.134;
1796
1797 if ( vdrift < fVDsmp[0] ) {
7754cd1f 1798 printf("<AliTRDdigitizer::SampleTimeStruct> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
1799 printf("<AliTRDdigitizer::SampleTimeStruct> Drift Velocity too small (%.3f<%.3f)\n"
3551db50 1800 , vdrift, fVDsmp[0]);
7754cd1f 1801 printf("<AliTRDdigitizer::SampleTimeStruct> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
3551db50 1802 vdrift = fVDsmp[0];
1803 } else if ( vdrift > fVDsmp[7] ) {
7754cd1f 1804 printf("<AliTRDdigitizer::SampleTimeStruct> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
1805 printf("<AliTRDdigitizer::SampleTimeStruct> Drift Velocity too large (%.3f>%.3f)\n"
3551db50 1806 , vdrift,fVDsmp[6]);
7754cd1f 1807 printf("<AliTRDdigitizer::SampleTimeStruct> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n");
3551db50 1808 vdrift = fVDsmp[7];
1809 }
1810
1811 const Int_t ktimebin = 38;
1812 const Int_t kZbin = 11;
1813
1814 // Garfield simulation at UD = -1500V; vd = 1.032cm/microsec, <driftfield> = 525V/cm
1815 Float_t time1500[ktimebin][kZbin] =
1816 {{0.09170, 0.09205, 0.09306, 0.09475, 0.09716, 0.10035,
1817 0.10445, 0.10993, 0.11838, 0.13986, 0.37858},
1818 {0.06588, 0.06626, 0.06739, 0.06926, 0.07186, 0.07524,
1819 0.07951, 0.08515, 0.09381, 0.11601, 0.35673},
1820 {0.03946, 0.04003, 0.04171, 0.04435, 0.04780, 0.05193,
1821 0.05680, 0.06306, 0.07290, 0.09873, 0.34748},
1822 {0.01151, 0.01283, 0.01718, 0.02282, 0.02880, 0.03479,
1823 0.04098, 0.04910, 0.06413, 0.10567, 0.36897},
1824 {0.01116, 0.01290, 0.01721, 0.02299, 0.02863, 0.03447,
1825 0.04074, 0.04984, 0.06839, 0.11625, 0.37277},
1826 {0.03919, 0.03974, 0.04131, 0.04380, 0.04703, 0.05102,
1827 0.05602, 0.06309, 0.07651, 0.10938, 0.36838},
1828 {0.06493, 0.06560, 0.06640, 0.06802, 0.07051, 0.07392,
1829 0.07853, 0.08510, 0.09690, 0.12621, 0.38058},
1830 {0.09174, 0.09186, 0.09225, 0.09303, 0.09477, 0.00000,
1831 0.11205, 0.11952, 0.13461, 0.16984, 0.43017},
1832 {0.14356, 0.14494, 0.14959, 0.16002, 0.18328, 0.27981,
1833 0.22785, 0.21240, 0.21948, 0.25965, 0.52392},
1834 {0.23120, 0.23366, 0.24046, 0.25422, 0.28071, 0.36914,
1835 0.32999, 0.31208, 0.31772, 0.35804, 0.62249},
1836 {0.32686, 0.32916, 0.33646, 0.35053, 0.37710, 0.46292,
1837 0.42773, 0.40948, 0.41497, 0.45527, 0.71955},
1838 {0.42353, 0.42583, 0.43317, 0.44727, 0.47380, 0.55884,
1839 0.52479, 0.50650, 0.51194, 0.55225, 0.81658},
1840 {0.52038, 0.52271, 0.53000, 0.54415, 0.57064, 0.65545,
1841 0.62172, 0.60341, 0.60885, 0.64915, 0.91339},
1842 {0.61724, 0.61953, 0.62694, 0.64098, 0.66756, 0.75226,
1843 0.71862, 0.70030, 0.70575, 0.74604, 1.01035},
1844 {0.71460, 0.71678, 0.72376, 0.73786, 0.76447, 0.84913,
1845 0.81551, 0.79720, 0.80264, 0.84292, 1.10723},
1846 {0.81101, 0.81334, 0.82066, 0.83475, 0.86127, 0.94599,
1847 0.91240, 0.89408, 0.89952, 0.93981, 1.20409},
1848 {0.90788, 0.91023, 0.91752, 0.93163, 0.95815, 1.04293,
1849 1.00929, 0.99096, 0.99640, 1.03669, 1.30106},
1850 {1.00477, 1.00707, 1.01449, 1.02852, 1.05504, 1.13976,
1851 1.10617, 1.08784, 1.09329, 1.13358, 1.39796},
1852 {1.10166, 1.10397, 1.11130, 1.12541, 1.15257, 1.23672,
1853 1.20307, 1.18472, 1.19018, 1.23046, 1.49486},
1854 {1.19854, 1.20084, 1.20818, 1.22235, 1.24885, 1.33355,
1855 1.29992, 1.28156, 1.28707, 1.32735, 1.59177},
1856 {1.29544, 1.29780, 1.30507, 1.31917, 1.34575, 1.43073,
1857 1.39681, 1.37851, 1.38396, 1.42377, 1.68854},
1858 {1.39236, 1.39462, 1.40205, 1.41607, 1.44259, 1.52745,
1859 1.49368, 1.47541, 1.48083, 1.52112, 1.78546},
1860 {1.49314, 1.49149, 1.49885, 1.51297, 1.53949, 1.62420,
1861 1.59016, 1.57231, 1.57772, 1.61800, 1.88048},
1862 {1.58610, 1.58839, 1.59572, 1.60983, 1.63635, 1.72109,
1863 1.68651, 1.66921, 1.67463, 1.71489, 1.97918},
1864 {1.68400, 1.68529, 1.69261, 1.70671, 1.73331, 1.81830,
1865 1.78341, 1.76605, 1.77150, 1.81179, 2.07608},
1866 {1.77991, 1.78215, 1.78952, 1.80385, 1.83014, 1.91486,
1867 1.88128, 1.86215, 1.86837, 1.90865, 2.17304},
1868 {1.87674, 1.87904, 1.88647, 1.90052, 1.92712, 2.01173,
1869 1.97812, 1.95905, 1.96527, 2.00710, 2.26979},
1870 {1.97369, 1.97594, 1.98326, 1.99869, 2.02442, 2.10865,
1871 2.07501, 2.05666, 2.06214, 2.10243, 2.36669},
1872 {2.07052, 2.07281, 2.08016, 2.09425, 2.12132, 2.20555,
1873 2.17182, 2.15341, 2.15904, 2.19933, 2.46363},
1874 {2.16742, 2.16971, 2.17707, 2.19114, 2.21766, 2.30240,
1875 2.26877, 2.25015, 2.25573, 2.29586, 2.56060},
1876 {2.26423, 2.26659, 2.27396, 2.28803, 2.31456, 2.40828,
1877 2.36567, 2.34705, 2.35282, 2.39765, 2.65744},
1878 {2.36153, 2.36349, 2.37330, 2.38501, 2.41159, 2.49940,
1879 2.46257, 2.44420, 2.44843, 2.48987, 2.75431},
1880 {2.46558, 2.46035, 2.46822, 2.48181, 2.50849, 2.59630,
1881 2.55947, 2.54112, 2.54513, 2.58677, 2.85094},
1882 {2.56248, 2.55723, 2.56486, 2.57871, 2.60520, 2.68998,
1883 2.65626, 2.63790, 2.64316, 2.68360, 2.94813},
1884 {2.65178, 2.65441, 2.66153, 2.67556, 2.70210, 2.78687,
1885 2.75319, 2.73463, 2.74032, 2.78060, 3.04503},
1886 {2.74868, 2.75131, 2.75870, 2.77245, 2.79385, 2.88700,
1887 2.85009, 2.83177, 2.83723, 2.87750, 3.14193},
1888 {2.84574, 2.84789, 2.85560, 2.86935, 2.89075, 2.98060,
1889 2.94576, 2.92868, 2.93356, 2.97436, 3.23868},
1890 {2.94239, 2.94469, 2.95221, 2.96625, 2.99345, 3.07747,
1891 3.04266, 3.02545, 3.03051, 3.07118, 3.33555}};
1892
1893 // Garfield simulation at UD = -1600V; vd = 1.158cm/microsec, <driftfield> = 558V/cm
1894 Float_t time1600[ktimebin][kZbin] =
1895 {{0.09169, 0.09203, 0.09305, 0.09473, 0.09714, 0.10032,
1896 0.10441, 0.10990, 0.11835, 0.13986, 0.37845},
1897 {0.06589, 0.06626, 0.06738, 0.06924, 0.07184, 0.07521,
1898 0.07947, 0.08512, 0.09379, 0.11603, 0.35648},
1899 {0.03947, 0.04003, 0.04171, 0.04434, 0.04778, 0.05190,
1900 0.05678, 0.06304, 0.07292, 0.09876, 0.34759},
1901 {0.01111, 0.01281, 0.01718, 0.02281, 0.02879, 0.03477,
1902 0.04097, 0.04910, 0.06415, 0.10573, 0.36896},
1903 {0.01120, 0.01311, 0.01721, 0.02279, 0.02862, 0.03446,
1904 0.04074, 0.04981, 0.06825, 0.11595, 0.37255},
1905 {0.03919, 0.03980, 0.04132, 0.04380, 0.04704, 0.05102,
1906 0.05602, 0.06302, 0.07633, 0.10896, 0.36743},
1907 {0.06531, 0.06528, 0.06631, 0.06805, 0.07053, 0.07392,
1908 0.07853, 0.08505, 0.09669, 0.12578, 0.37967},
1909 {0.09157, 0.09171, 0.09216, 0.09301, 0.09475, 0.00000,
1910 0.11152, 0.11879, 0.13352, 0.16802, 0.42750},
1911 {0.13977, 0.14095, 0.14509, 0.15433, 0.17534, 0.26406,
1912 0.21660, 0.20345, 0.21113, 0.25067, 0.51434},
1913 {0.21816, 0.22041, 0.22631, 0.23850, 0.26208, 0.34340,
1914 0.30755, 0.29237, 0.29878, 0.33863, 0.60258},
1915 {0.30344, 0.30547, 0.31241, 0.32444, 0.34809, 0.42696,
1916 0.39464, 0.37919, 0.38546, 0.42530, 0.68926},
1917 {0.38969, 0.39164, 0.39810, 0.41059, 0.43441, 0.51246,
1918 0.48112, 0.46562, 0.47191, 0.51172, 0.77558},
1919 {0.47592, 0.47799, 0.48442, 0.49689, 0.52061, 0.59855,
1920 0.56752, 0.55201, 0.55826, 0.59808, 0.86202},
1921 {0.56226, 0.56428, 0.57074, 0.58324, 0.60696, 0.68483,
1922 0.65388, 0.63837, 0.64461, 0.68445, 0.94830},
1923 {0.64881, 0.65063, 0.65709, 0.66958, 0.69331, 0.77117,
1924 0.74023, 0.72472, 0.73098, 0.77079, 1.03486},
1925 {0.73506, 0.73698, 0.74344, 0.75596, 0.77964, 0.85751,
1926 0.82658, 0.81107, 0.81731, 0.85712, 1.12106},
1927 {0.82132, 0.82333, 0.82979, 0.84228, 0.86608, 0.94386,
1928 0.91293, 0.89742, 0.90367, 0.94335, 1.20737},
1929 {0.90767, 0.90968, 0.91614, 0.92863, 0.95236, 1.03021,
1930 0.99928, 0.98377, 0.99001, 1.02984, 1.29371},
1931 {0.99410, 0.99602, 1.00257, 1.01498, 1.03869, 1.11720,
1932 1.08563, 1.07011, 1.07637, 1.11621, 1.37873},
1933 {1.08036, 1.08240, 1.08884, 1.10138, 1.12504, 1.20301,
1934 1.17198, 1.15647, 1.16272, 1.20255, 1.46651},
1935 {1.16670, 1.16872, 1.17525, 1.18783, 1.21139, 1.28934,
1936 1.25833, 1.24281, 1.24909, 1.28889, 1.55275},
1937 {1.25307, 1.25510, 1.26153, 1.27404, 1.29773, 1.37584,
1938 1.34469, 1.32916, 1.33536, 1.37524, 1.63915},
1939 {1.33942, 1.34146, 1.34788, 1.36040, 1.38410, 1.46438,
1940 1.43105, 1.41537, 1.42176, 1.46158, 1.72538},
1941 {1.42579, 1.42782, 1.43458, 1.44674, 1.47043, 1.55085,
1942 1.51675, 1.50168, 1.50810, 1.54793, 1.81174},
1943 {1.51207, 1.51454, 1.52060, 1.53307, 1.55684, 1.63478,
1944 1.60336, 1.58820, 1.59446, 1.63414, 1.89814},
1945 {1.59856, 1.60047, 1.60693, 1.61942, 1.64317, 1.72257,
1946 1.69008, 1.67454, 1.68080, 1.72063, 1.98433},
1947 {1.68481, 1.68682, 1.69330, 1.70584, 1.72949, 1.80752,
1948 1.77643, 1.76089, 1.76716, 1.80692, 2.07069},
1949 {1.77117, 1.77319, 1.77969, 1.79260, 1.81583, 1.89376,
1950 1.86226, 1.84720, 1.85355, 1.89256, 2.15343},
1951 {1.85748, 1.85967, 1.86605, 1.87848, 1.90222, 1.98010,
1952 1.94913, 1.93271, 1.93981, 1.97968, 2.24355},
1953 {1.94386, 1.94587, 1.95233, 1.96484, 1.98854, 2.06646,
1954 2.03542, 2.01755, 2.02617, 2.06604, 2.32993},
1955 {2.03022, 2.03230, 2.03868, 2.05134, 2.07488, 2.15367,
1956 2.12178, 2.10391, 2.11252, 2.15432, 2.41623},
1957 {2.11656, 2.11857, 2.12505, 2.13772, 2.16147, 2.23919,
1958 2.20817, 2.19265, 2.20744, 2.23872, 2.49996},
1959 {2.20291, 2.20611, 2.21137, 2.22387, 2.24758, 2.32563,
1960 2.29450, 2.27901, 2.28525, 2.32507, 2.58897},
1961 {2.28922, 2.29172, 2.29774, 2.31345, 2.33400, 2.41287,
1962 2.38086, 2.36535, 2.37160, 2.40869, 2.67113},
1963 {2.37572, 2.37764, 2.38410, 2.39803, 2.42046, 2.49817,
1964 2.46721, 2.45171, 2.45794, 2.49505, 2.76061},
1965 {2.46190, 2.46396, 2.47043, 2.48340, 2.50665, 2.58453,
1966 2.55357, 2.53728, 2.54430, 2.58407, 2.84816},
1967 {2.54833, 2.55032, 2.55679, 2.56976, 2.59312, 2.67103,
1968 2.63993, 2.62364, 2.63062, 2.67040, 2.93444},
1969 {2.63456, 2.63660, 2.64304, 2.65555, 2.67938, 2.75739,
1970 2.72629, 2.71064, 2.71688, 2.75671, 3.01886}};
1971
1972 // Garfield simulation at UD = -1700V; vd = 1.299cm/microsec, <driftfield> = 590V/cm
1973 Float_t time1700[ktimebin][kZbin] =
1974 {{0.09167, 0.09201, 0.09302, 0.09471, 0.09712, 0.10029,
1975 0.10438, 0.10986, 0.11832, 0.13986, 0.37824},
1976 {0.06591, 0.06626, 0.06736, 0.06923, 0.07183, 0.07519,
1977 0.07944, 0.08511, 0.09378, 0.11603, 0.35625},
1978 {0.03946, 0.04003, 0.04170, 0.04433, 0.04777, 0.05189,
1979 0.05676, 0.06301, 0.07291, 0.09880, 0.34724},
1980 {0.01110, 0.01281, 0.01718, 0.02280, 0.02879, 0.03476,
1981 0.04096, 0.04910, 0.06417, 0.10582, 0.36861},
1982 {0.01115, 0.01294, 0.01721, 0.02276, 0.02862, 0.03447,
1983 0.04074, 0.04980, 0.06812, 0.11565, 0.37231},
1984 {0.03920, 0.03974, 0.04133, 0.04381, 0.04706, 0.05105,
1985 0.05603, 0.06299, 0.07618, 0.10860, 0.36646},
1986 {0.06498, 0.06529, 0.06634, 0.06808, 0.07055, 0.07395,
1987 0.07852, 0.08500, 0.09650, 0.12532, 0.37850},
1988 {0.09143, 0.09159, 0.09207, 0.09297, 0.09473, 0.00000,
1989 0.11102, 0.11809, 0.13245, 0.16627, 0.42496},
1990 {0.13646, 0.13750, 0.14112, 0.14926, 0.16806, 0.24960,
1991 0.20627, 0.19536, 0.20366, 0.24256, 0.50557},
1992 {0.20678, 0.20848, 0.21384, 0.22450, 0.24552, 0.32018,
1993 0.28740, 0.27477, 0.28196, 0.32128, 0.58475},
1994 {0.28287, 0.28461, 0.29020, 0.30108, 0.32224, 0.39467,
1995 0.36500, 0.35217, 0.35926, 0.39860, 0.66194},
1996 {0.35972, 0.36145, 0.36713, 0.37797, 0.39912, 0.47091,
1997 0.44212, 0.42925, 0.43632, 0.47563, 0.73892},
1998 {0.43667, 0.43841, 0.44413, 0.45494, 0.47607, 0.54780,
1999 0.51912, 0.50627, 0.51334, 0.55254, 0.81595},
2000 {0.51365, 0.51540, 0.52101, 0.53193, 0.55305, 0.62463,
2001 0.59617, 0.58328, 0.59035, 0.62965, 0.89303},
2002 {0.59064, 0.59240, 0.59801, 0.60893, 0.63009, 0.70169,
2003 0.67317, 0.66028, 0.66735, 0.70666, 0.96995},
2004 {0.66765, 0.66939, 0.67501, 0.68592, 0.70724, 0.77863,
2005 0.75016, 0.73728, 0.74435, 0.78366, 1.04696},
2006 {0.74464, 0.74636, 0.75200, 0.76293, 0.78405, 0.85561,
2007 0.82716, 0.81427, 0.82133, 0.86064, 1.12396},
2008 {0.82165, 0.82340, 0.82902, 0.83991, 0.86104, 0.93266,
2009 0.90414, 0.89128, 0.89834, 0.93763, 1.20100},
2010 {0.89863, 0.90042, 0.90659, 0.91705, 0.93805, 1.00960,
2011 0.98115, 0.96825, 0.97533, 1.01462, 1.27801},
2012 {0.97563, 0.97740, 0.98310, 0.99391, 1.01504, 1.08659,
2013 1.05814, 1.04526, 1.05233, 1.09163, 1.35503},
2014 {1.05276, 1.05451, 1.06002, 1.07090, 1.09099, 1.16357,
2015 1.13516, 1.12225, 1.12933, 1.16863, 1.43195},
2016 {1.12977, 1.13138, 1.13700, 1.14792, 1.16797, 1.24061,
2017 1.21212, 1.19926, 1.20626, 1.24554, 1.50900},
2018 {1.20664, 1.20839, 1.21400, 1.22490, 1.24606, 1.31772,
2019 1.28914, 1.27382, 1.28329, 1.32262, 1.58550},
2020 {1.28367, 1.28541, 1.29099, 1.30189, 1.32312, 1.39460,
2021 1.36612, 1.34924, 1.36030, 1.39961, 1.66310},
2022 {1.36064, 1.36249, 1.36799, 1.37896, 1.40004, 1.48030,
2023 1.44314, 1.43032, 1.43731, 1.47659, 1.73442},
2024 {1.43762, 1.43937, 1.44497, 1.45618, 1.47704, 1.54932,
2025 1.52012, 1.50725, 1.51430, 1.55357, 1.81708},
2026 {1.51462, 1.51937, 1.52203, 1.53316, 1.55403, 1.62572,
2027 1.59713, 1.58424, 1.59128, 1.63061, 1.89406},
2028 {1.59162, 1.59338, 1.59947, 1.60989, 1.63103, 1.70270,
2029 1.67411, 1.66124, 1.66799, 1.70759, 1.97103},
2030 {1.66874, 1.67037, 1.67597, 1.68687, 1.70814, 1.77969,
2031 1.75112, 1.73806, 1.74530, 1.78457, 2.04794},
2032 {1.74693, 1.74749, 1.75297, 1.76476, 1.78500, 1.85667,
2033 1.82811, 1.81504, 1.82101, 1.86161, 2.12492},
2034 {1.82260, 1.82437, 1.82995, 1.84174, 1.86202, 1.93372,
2035 1.90509, 1.89202, 1.89930, 1.93859, 2.20189},
2036 {1.89964, 1.90135, 1.90693, 1.91789, 1.93952, 2.01080,
2037 1.98207, 1.96921, 1.97628, 2.01384, 2.27887},
2038 {1.97662, 1.97917, 1.98611, 1.99487, 2.01601, 2.08778,
2039 2.05846, 2.04623, 2.05330, 2.09244, 2.35585},
2040 {2.05359, 2.05615, 2.06309, 2.07187, 2.09867, 2.16459,
2041 2.13610, 2.12322, 2.13029, 2.16942, 2.43199},
2042 {2.13063, 2.13233, 2.13795, 2.14886, 2.17008, 2.24199,
2043 2.21310, 2.20020, 2.20727, 2.24659, 2.50983},
2044 {2.20761, 2.20931, 2.21955, 2.22624, 2.24708, 2.32147,
2045 2.29009, 2.27725, 2.28276, 2.32359, 2.58680},
2046 {2.28459, 2.29108, 2.29202, 2.30286, 2.32007, 2.39559,
2047 2.36683, 2.35422, 2.36119, 2.40058, 2.66081},
2048 {2.36153, 2.36806, 2.36889, 2.37985, 2.40092, 2.47828,
2049 2.44381, 2.43099, 2.43819, 2.47750, 2.73779}};
2050
2051 // Garfield simulation at UD = -1800V; vd = 1.450cm/microsec, <driftfield> = 623V/cm
2052 Float_t time1800[ktimebin][kZbin] =
2053 {{0.09166, 0.09199, 0.09300, 0.09470, 0.09709, 0.10026,
2054 0.10434, 0.10983, 0.11831, 0.13987, 0.37802},
2055 {0.06585, 0.06623, 0.06735, 0.06921, 0.07180, 0.07520,
2056 0.07941, 0.08507, 0.09376, 0.11604, 0.35624},
2057 {0.03945, 0.04004, 0.04169, 0.04432, 0.04776, 0.05187,
2058 0.05674, 0.06300, 0.07290, 0.09884, 0.34704},
2059 {0.01108, 0.01287, 0.01717, 0.02280, 0.02880, 0.03476,
2060 0.04095, 0.04909, 0.06419, 0.10589, 0.36843},
2061 {0.01115, 0.01287, 0.01720, 0.02276, 0.02862, 0.03448,
2062 0.04073, 0.04973, 0.06799, 0.11535, 0.37224},
2063 {0.03918, 0.03975, 0.04134, 0.04382, 0.04707, 0.05105,
2064 0.05603, 0.06296, 0.07605, 0.10822, 0.36560},
2065 {0.06498, 0.06532, 0.06635, 0.06809, 0.07058, 0.07395,
2066 0.07855, 0.08495, 0.09632, 0.12488, 0.37730},
2067 {0.09130, 0.09160, 0.09199, 0.09300, 0.09472, 0.00000,
2068 0.11059, 0.11747, 0.13146, 0.16462, 0.42233},
2069 {0.13364, 0.13449, 0.13767, 0.14481, 0.16147, 0.23635,
2070 0.19706, 0.18812, 0.19704, 0.23520, 0.49749},
2071 {0.19698, 0.19844, 0.20311, 0.21236, 0.23082, 0.29920,
2072 0.26936, 0.25927, 0.26732, 0.30601, 0.56871},
2073 {0.26518, 0.26670, 0.27160, 0.28099, 0.29955, 0.36597,
2074 0.33885, 0.32858, 0.33653, 0.37524, 0.63801},
2075 {0.33441, 0.33553, 0.34040, 0.34987, 0.36841, 0.43428,
2076 0.40797, 0.39763, 0.40556, 0.44425, 0.70698},
2077 {0.40296, 0.40447, 0.40934, 0.41881, 0.43737, 0.50306,
2078 0.47695, 0.46662, 0.47455, 0.51329, 0.77600},
2079 {0.47296, 0.47344, 0.47830, 0.48779, 0.50632, 0.57200,
2080 0.54593, 0.53559, 0.54351, 0.58222, 0.84489},
2081 {0.54089, 0.54264, 0.54727, 0.55673, 0.57529, 0.64094,
2082 0.61490, 0.60457, 0.61249, 0.65118, 0.91394},
2083 {0.60987, 0.61138, 0.61624, 0.62573, 0.64428, 0.70989,
2084 0.68397, 0.67354, 0.68147, 0.72015, 0.98291},
2085 {0.67883, 0.68035, 0.68521, 0.69469, 0.71324, 0.77896,
2086 0.75287, 0.74251, 0.75043, 0.78912, 1.04458},
2087 {0.74780, 0.74932, 0.75421, 0.76367, 0.78221, 0.84785,
2088 0.82185, 0.81148, 0.81941, 0.85811, 1.12085},
2089 {0.81690, 0.81830, 0.82316, 0.83263, 0.85120, 0.91683,
2090 0.89077, 0.88045, 0.88837, 0.92707, 1.18976},
2091 {0.88574, 0.88726, 0.89228, 0.90198, 0.92017, 0.98578,
2092 0.95974, 0.94947, 0.95734, 0.99604, 1.25873},
2093 {0.95493, 0.95624, 0.96110, 0.97058, 0.98913, 1.05481,
2094 1.02873, 1.01839, 1.02631, 1.06503, 1.32772},
2095 {1.02392, 1.02524, 1.03008, 1.03955, 1.05810, 1.12378,
2096 1.09757, 1.08605, 1.09530, 1.13399, 1.39669},
2097 {1.09270, 1.09418, 1.09911, 1.10854, 1.12714, 1.19281,
2098 1.16502, 1.15633, 1.16427, 1.20271, 1.46574},
2099 {1.16168, 1.16323, 1.16801, 1.17772, 1.19604, 1.26190,
2100 1.23399, 1.22531, 1.23323, 1.27194, 1.53475},
2101 {1.23061, 1.23214, 1.23698, 1.24669, 1.26503, 1.33073,
2102 1.30461, 1.29428, 1.30220, 1.34091, 1.60372},
2103 {1.29960, 1.30110, 1.30596, 1.31544, 1.33398, 1.39962,
2104 1.37228, 1.36323, 1.37121, 1.40988, 1.67273},
2105 {1.36851, 1.37007, 1.37512, 1.38441, 1.40297, 1.46865,
2106 1.44256, 1.43222, 1.44017, 1.47878, 1.74155},
2107 {1.43752, 1.43904, 1.44773, 1.45338, 1.47220, 1.53759,
2108 1.51136, 1.50119, 1.50914, 1.54775, 1.81050},
2109 {1.50646, 1.50802, 1.51288, 1.52237, 1.54097, 1.60697,
2110 1.58049, 1.57018, 1.57811, 1.61678, 1.87947},
2111 {1.57545, 1.57720, 1.58185, 1.59134, 1.60996, 1.67787,
2112 1.64929, 1.63914, 1.64707, 1.68570, 1.94851},
2113 {1.64442, 1.64617, 1.65081, 1.66035, 1.67893, 1.74684,
2114 1.71826, 1.70745, 1.71604, 1.75310, 2.01748},
2115 {1.71337, 1.71513, 1.71978, 1.72932, 1.74645, 1.81346,
2116 1.78739, 1.77642, 1.78501, 1.82151, 2.08644},
2117 {1.78238, 1.78410, 1.78876, 1.79824, 1.81678, 1.88332,
2118 1.85639, 1.84262, 1.85397, 1.89270, 2.15533},
2119 {1.85135, 1.85306, 1.85778, 1.86728, 1.88580, 1.95615,
2120 1.92536, 1.91171, 1.92283, 1.96165, 2.22428},
2121 {1.92774, 1.92184, 1.92672, 1.93618, 1.95477, 2.02048,
2122 1.99427, 1.98068, 1.99192, 2.03062, 2.29338},
2123 {1.98929, 1.99081, 1.99567, 2.00515, 2.02373, 2.08987,
2124 2.06332, 2.05249, 2.05939, 2.09928, 2.36227},
2125 {2.05829, 2.05978, 2.06464, 2.07414, 2.09272, 2.15850,
2126 2.12928, 2.12194, 2.12987, 2.16825, 2.43083},
2127 {2.12726, 2.12869, 2.13360, 2.14425, 2.16160, 2.22872,
2128 2.20118, 2.19078, 2.19876, 2.23416, 2.50007}};
2129
2130 // Garfield simulation at UD = -1900V; vd = 1.610cm/microsec, <driftfield> = 655V/cm
2131 Float_t time1900[ktimebin][kZbin] =
2132 {{0.09166, 0.09198, 0.09298, 0.09467, 0.09707, 0.10023,
2133 0.10431, 0.10980, 0.11828, 0.13988, 0.37789},
2134 {0.06584, 0.06622, 0.06735, 0.06920, 0.07179, 0.07514,
2135 0.07938, 0.08505, 0.09374, 0.11606, 0.35599},
2136 {0.03945, 0.04002, 0.04169, 0.04432, 0.04775, 0.05185,
2137 0.05672, 0.06298, 0.07290, 0.09888, 0.34695},
2138 {0.01109, 0.01281, 0.01717, 0.02279, 0.02878, 0.03476,
2139 0.04094, 0.04909, 0.06421, 0.10597, 0.36823},
2140 {0.01115, 0.01287, 0.01720, 0.02294, 0.02862, 0.03448,
2141 0.04074, 0.04973, 0.06783, 0.11506, 0.37206},
2142 {0.03940, 0.03975, 0.04135, 0.04386, 0.04708, 0.05106,
2143 0.05604, 0.06293, 0.07592, 0.10787, 0.36484},
2144 {0.06500, 0.06534, 0.06638, 0.06811, 0.07060, 0.07413,
2145 0.07852, 0.08491, 0.09614, 0.12446, 0.37626},
2146 {0.09119, 0.09140, 0.09194, 0.09293, 0.09471, 0.00000,
2147 0.11013, 0.11685, 0.13050, 0.16302, 0.41991},
2148 {0.13111, 0.13190, 0.13466, 0.14091, 0.15554, 0.22409,
2149 0.18846, 0.18167, 0.19113, 0.22854, 0.48995},
2150 {0.18849, 0.18975, 0.19380, 0.20185, 0.21797, 0.28050,
2151 0.25368, 0.24575, 0.25446, 0.29249, 0.55442},
2152 {0.24995, 0.25125, 0.25563, 0.26366, 0.27986, 0.34065,
2153 0.31605, 0.30815, 0.31680, 0.35482, 0.61697},
2154 {0.31187, 0.31324, 0.31745, 0.32580, 0.34205, 0.40217,
2155 0.37825, 0.37031, 0.37897, 0.41696, 0.67890},
2156 {0.37401, 0.37531, 0.37955, 0.38777, 0.40395, 0.46408,
2157 0.44037, 0.43242, 0.44108, 0.47906, 0.74122},
2158 {0.43610, 0.43741, 0.44161, 0.44986, 0.46604, 0.52614,
2159 0.50248, 0.49452, 0.50316, 0.54116, 0.80326},
2160 {0.49820, 0.49988, 0.50372, 0.51196, 0.52814, 0.58822,
2161 0.56459, 0.55661, 0.56527, 0.60326, 0.86526},
2162 {0.56032, 0.56161, 0.56582, 0.57408, 0.59024, 0.65032,
2163 0.62670, 0.61872, 0.62737, 0.66537, 0.92749},
2164 {0.62240, 0.62371, 0.62792, 0.63624, 0.65236, 0.71241,
2165 0.68881, 0.68081, 0.68947, 0.72750, 0.98941},
2166 {0.68449, 0.68581, 0.69002, 0.69828, 0.71444, 0.77452,
2167 0.75089, 0.74295, 0.75157, 0.78957, 1.05157},
2168 {0.74660, 0.74790, 0.75212, 0.76036, 0.77654, 0.83748,
2169 0.81299, 0.80501, 0.81193, 0.85168, 1.11375},
2170 {0.80870, 0.81017, 0.81423, 0.82246, 0.83867, 0.89908,
2171 0.87509, 0.86660, 0.87577, 0.91376, 1.17586},
2172 {0.87080, 0.87233, 0.87632, 0.88458, 0.90074, 0.96083,
2173 0.93718, 0.92922, 0.93787, 0.97588, 1.23794},
2174 {0.93291, 0.93422, 0.93844, 0.94667, 0.96293, 1.02295,
2175 0.99929, 0.99127, 0.99997, 1.03797, 1.29995},
2176 {0.99500, 0.99645, 1.00308, 1.00877, 1.02497, 1.08504,
2177 1.06140, 1.05343, 1.06203, 1.10006, 1.36216},
2178 {1.05712, 1.05926, 1.06262, 1.07092, 1.08706, 1.14754,
2179 1.12350, 1.11550, 1.12417, 1.16218, 1.42427},
2180 {1.11921, 1.12059, 1.12473, 1.13297, 1.14916, 1.21140,
2181 1.18560, 1.17284, 1.18625, 1.22414, 1.48629},
2182 {1.18140, 1.18262, 1.18690, 1.19508, 1.21125, 1.27139,
2183 1.24164, 1.23495, 1.24838, 1.28634, 1.54852},
2184 {1.24340, 1.24473, 1.24901, 1.25732, 1.27336, 1.33358,
2185 1.30793, 1.30179, 1.31047, 1.34848, 1.61066},
2186 {1.30551, 1.30684, 1.31104, 1.32056, 1.33553, 1.39609,
2187 1.37004, 1.36392, 1.37045, 1.41057, 1.67259},
2188 {1.36755, 1.36892, 1.37315, 1.39148, 1.39755, 1.45820,
2189 1.43215, 1.42602, 1.43467, 1.47268, 1.73477},
2190 {1.42966, 1.43101, 1.43549, 1.45359, 1.45976, 1.52031,
2191 1.49601, 1.48811, 1.49677, 1.53477, 1.79691},
2192 {1.49180, 1.49321, 1.49760, 1.51570, 1.52175, 1.58185,
2193 1.55771, 1.55023, 1.55888, 1.59672, 1.85501},
2194 {1.55391, 1.55527, 1.55943, 1.57782, 1.58391, 1.64395,
2195 1.62008, 1.61233, 1.62085, 1.65883, 1.92091},
2196 {1.61599, 1.61732, 1.62154, 1.63993, 1.64612, 1.70608,
2197 1.68237, 1.67108, 1.68301, 1.72110, 1.97931},
2198 {1.67808, 1.67948, 1.68364, 1.70204, 1.70823, 1.76858,
2199 1.74404, 1.73539, 1.74512, 1.78321, 2.04522},
2200 {1.74019, 1.74152, 1.74573, 1.76415, 1.77015, 1.83040,
2201 1.80615, 1.79366, 1.80723, 1.84509, 2.10742},
2202 {1.80235, 1.80362, 1.80783, 1.82626, 1.83227, 1.89246,
2203 1.86795, 1.85405, 1.86938, 1.90720, 2.16953},
2204 {1.86442, 1.86572, 1.86994, 1.88837, 1.89438, 1.95445,
2205 1.93006, 1.92283, 1.93148, 1.96931, 2.23147},
2206 {1.92700, 1.92783, 1.93197, 1.95049, 1.95649, 2.01668,
2207 1.99217, 1.98486, 1.99352, 2.03143, 2.29358}};
2208
2209 // Garfield simulation at UD = -2000V; vd = 1.783cm/microsec, <driftfield> = 688V/cm
2210 Float_t time2000[ktimebin][kZbin] =
2211 {{0.09176, 0.09196, 0.09296, 0.09465, 0.09704, 0.10020,
2212 0.10427, 0.10977, 0.11825, 0.13988, 0.37774},
2213 {0.06583, 0.06620, 0.06735, 0.06918, 0.07177, 0.07513,
2214 0.07936, 0.08503, 0.09372, 0.11606, 0.35586},
2215 {0.03944, 0.04001, 0.04170, 0.04431, 0.04774, 0.05184,
2216 0.05670, 0.06296, 0.07291, 0.09893, 0.34680},
2217 {0.01108, 0.01281, 0.01719, 0.02279, 0.02879, 0.03474,
2218 0.04093, 0.04908, 0.06422, 0.10605, 0.36800},
2219 {0.01114, 0.01287, 0.01720, 0.02276, 0.02863, 0.03449,
2220 0.04073, 0.04970, 0.06774, 0.11478, 0.37179},
2221 {0.03925, 0.03977, 0.04135, 0.04386, 0.04711, 0.05108,
2222 0.05604, 0.06290, 0.07580, 0.10748, 0.36386},
2223 {0.06501, 0.06536, 0.06640, 0.06814, 0.07062, 0.07398,
2224 0.07852, 0.08487, 0.09598, 0.12405, 0.37519},
2225 {0.09109, 0.09127, 0.09188, 0.09292, 0.09472, 0.00000,
2226 0.10964, 0.11630, 0.12960, 0.16150, 0.41765},
2227 {0.12898, 0.12968, 0.13209, 0.13749, 0.15034, 0.21286,
2228 0.18088, 0.17590, 0.18591, 0.22254, 0.48315},
2229 {0.18122, 0.18227, 0.18574, 0.19263, 0.20674, 0.26376,
2230 0.23960, 0.23375, 0.24316, 0.28047, 0.54179},
2231 {0.23674, 0.23784, 0.24142, 0.24847, 0.26264, 0.31810,
2232 0.29602, 0.29008, 0.29944, 0.33675, 0.59795},
2233 {0.29279, 0.29382, 0.29742, 0.30448, 0.31865, 0.37364,
2234 0.35215, 0.34629, 0.35555, 0.39286, 0.65411},
2235 {0.34875, 0.34987, 0.35346, 0.36054, 0.37472, 0.42956,
2236 0.40825, 0.40229, 0.41167, 0.44894, 0.71033},
2237 {0.40484, 0.40594, 0.40954, 0.41660, 0.43077, 0.48560,
2238 0.46433, 0.45840, 0.46772, 0.50500, 0.76632},
2239 {0.46090, 0.46201, 0.46560, 0.47267, 0.48684, 0.54167,
2240 0.52041, 0.51449, 0.52382, 0.56108, 0.82227},
2241 {0.51698, 0.51809, 0.52173, 0.52874, 0.54291, 0.59776,
2242 0.57646, 0.57052, 0.57986, 0.61717, 0.87836},
2243 {0.57306, 0.57418, 0.57782, 0.58513, 0.59899, 0.65380,
2244 0.63255, 0.62661, 0.63594, 0.67325, 0.93460},
2245 {0.62912, 0.63024, 0.63383, 0.64103, 0.65506, 0.70988,
2246 0.68484, 0.68267, 0.69202, 0.72878, 0.99046},
2247 {0.68521, 0.68633, 0.68990, 0.69699, 0.71115, 0.76595,
2248 0.74468, 0.73872, 0.74814, 0.78538, 1.04674},
2249 {0.74127, 0.74239, 0.74605, 0.75303, 0.77022, 0.82204,
2250 0.80078, 0.79484, 0.80416, 0.84147, 1.10261},
2251 {0.79736, 0.79846, 0.80206, 0.80947, 0.82330, 0.87813,
2252 0.85688, 0.85087, 0.86023, 0.89752, 1.15874},
2253 {0.85342, 0.85454, 0.85815, 0.86519, 0.87936, 0.93417,
2254 0.91293, 0.90428, 0.91631, 0.95360, 1.20760},
2255 {0.90949, 0.91061, 0.91423, 0.92128, 0.93544, 0.99026,
2256 0.96807, 0.96305, 0.97239, 1.00967, 1.27078},
2257 {0.96556, 0.96669, 0.97111, 0.97734, 0.99151, 1.04664,
2258 1.02508, 1.01879, 1.02846, 1.06167, 1.32695},
2259 {1.02167, 1.02279, 1.02656, 1.03341, 1.04759, 1.10242,
2260 1.08115, 1.07003, 1.08453, 1.12184, 1.38304},
2261 {1.07776, 1.07883, 1.08242, 1.08950, 1.10384, 1.16422,
2262 1.13725, 1.13133, 1.14061, 1.17793, 1.43910},
2263 {1.13379, 1.13492, 1.13864, 1.14567, 1.15973, 1.21455,
2264 1.19323, 1.18734, 1.19668, 1.23401, 1.49528},
2265 {1.18988, 1.19098, 1.19457, 1.20164, 1.21582, 1.27064,
2266 1.24937, 1.24044, 1.25275, 1.29004, 1.55137},
2267 {1.24592, 1.24706, 1.25087, 1.25773, 1.27188, 1.32670,
2268 1.30544, 1.29953, 1.30883, 1.34613, 1.60743},
2269 {1.30202, 1.30313, 1.30673, 1.31381, 1.32797, 1.38278,
2270 1.36151, 1.35167, 1.36490, 1.40221, 1.66306},
2271 {1.35809, 1.35921, 1.36282, 1.36986, 1.38403, 1.43888,
2272 1.41760, 1.41174, 1.42083, 1.45830, 1.71915},
2273 {1.41419, 1.41528, 1.41890, 1.42595, 1.44011, 1.49496,
2274 1.47368, 1.46769, 1.47706, 1.51436, 1.77523},
2275 {1.47131, 1.47141, 1.47494, 1.48850, 1.49620, 1.55137,
2276 1.52977, 1.51820, 1.53315, 1.57042, 1.83158},
2277 {1.52635, 1.52750, 1.53103, 1.53814, 1.55228, 1.60736,
2278 1.58503, 1.57986, 1.58920, 1.62649, 1.88767},
2279 {1.58418, 1.58355, 1.58711, 1.59526, 1.60833, 1.66316,
2280 1.63345, 1.63261, 1.64556, 1.68204, 1.94359},
2281 {1.64027, 1.63958, 1.64489, 1.65024, 1.66443, 1.71925,
2282 1.69794, 1.69201, 1.70143, 1.73865, 1.99968},
2283 {1.69450, 1.69566, 1.69940, 1.70697, 1.71841, 1.77819,
2284 1.75396, 1.74814, 1.75743, 1.79083, 2.05427},
2285 {1.75054, 1.75221, 1.75527, 1.76306, 1.77662, 1.83428,
2286 1.81006, 1.81173, 1.81345, 1.85076, 2.10289}};
2287
2288 // Garfield simulation at UD = -2100V; vd = 1.959cm/microsec, <driftfield> = 720V/cm
2289 Float_t time2100[ktimebin][kZbin] =
2290 {{0.09160, 0.09194, 0.09294, 0.09462, 0.09701, 0.10017,
2291 0.10424, 0.10974, 0.11823, 0.13988, 0.37762},
2292 {0.06585, 0.06619, 0.06731, 0.06916, 0.07174, 0.07509,
2293 0.07933, 0.08500, 0.09370, 0.11609, 0.35565},
2294 {0.03960, 0.04001, 0.04171, 0.04430, 0.04774, 0.05182,
2295 0.05668, 0.06294, 0.07291, 0.09896, 0.34676},
2296 {0.01109, 0.01280, 0.01716, 0.02279, 0.02876, 0.03474,
2297 0.04096, 0.04908, 0.06424, 0.10612, 0.36790},
2298 {0.01114, 0.01285, 0.01719, 0.02287, 0.02863, 0.03449,
2299 0.04073, 0.04964, 0.06759, 0.11446, 0.37162},
2300 {0.03922, 0.03977, 0.04146, 0.04386, 0.04711, 0.05109,
2301 0.05605, 0.06287, 0.07575, 0.10713, 0.36298},
2302 {0.06504, 0.06538, 0.06641, 0.06818, 0.07064, 0.07426,
2303 0.07852, 0.08483, 0.09581, 0.12363, 0.37424},
2304 {0.09103, 0.09129, 0.09186, 0.09291, 0.09476, 0.00000,
2305 0.10923, 0.11578, 0.12873, 0.16005, 0.41525},
2306 {0.12723, 0.12777, 0.12988, 0.13458, 0.14579, 0.20264,
2307 0.17421, 0.17078, 0.18132, 0.21708, 0.47699},
2308 {0.17508, 0.17601, 0.17897, 0.18487, 0.19698, 0.24881,
2309 0.22737, 0.22337, 0.23348, 0.27000, 0.53032},
2310 {0.22571, 0.22663, 0.22969, 0.23570, 0.24787, 0.29826,
2311 0.27871, 0.27462, 0.28471, 0.32122, 0.58166},
2312 {0.27664, 0.27759, 0.28067, 0.28669, 0.29891, 0.34898,
2313 0.32982, 0.32570, 0.33576, 0.37229, 0.63268},
2314 {0.32766, 0.32862, 0.33170, 0.33778, 0.34988, 0.39973,
2315 0.38088, 0.37675, 0.38680, 0.42333, 0.68159},
2316 {0.37872, 0.37966, 0.38275, 0.38875, 0.40093, 0.45073,
2317 0.43192, 0.42780, 0.43786, 0.47438, 0.73480},
2318 {0.42974, 0.43070, 0.43378, 0.43982, 0.45196, 0.50177,
2319 0.48297, 0.47884, 0.48889, 0.52544, 0.78581},
2320 {0.48081, 0.48175, 0.48482, 0.49084, 0.50302, 0.55290,
2321 0.53398, 0.52988, 0.53994, 0.57647, 0.83687},
2322 {0.53645, 0.53295, 0.53586, 0.54188, 0.55408, 0.60398,
2323 0.58504, 0.58092, 0.59100, 0.62768, 0.88773},
2324 {0.58345, 0.58409, 0.58690, 0.59292, 0.60510, 0.65562,
2325 0.63609, 0.63197, 0.64203, 0.67856, 0.93907},
2326 {0.63397, 0.63490, 0.63795, 0.64403, 0.65613, 0.70612,
2327 0.68714, 0.68301, 0.69294, 0.72955, 0.99000},
2328 {0.68496, 0.68592, 0.68899, 0.69504, 0.70733, 0.75708,
2329 0.73818, 0.73405, 0.74412, 0.78064, 1.04100},
2330 {0.73600, 0.73696, 0.74003, 0.74624, 0.75828, 0.80805,
2331 0.78904, 0.78512, 0.79517, 0.83152, 1.09205},
2332 {0.78709, 0.78801, 0.79108, 0.79709, 0.80931, 0.85906,
2333 0.84027, 0.83614, 0.84621, 0.88269, 1.14058},
2334 {0.83808, 0.83905, 0.84215, 0.84816, 0.86031, 0.91011,
2335 0.89139, 0.88718, 0.89725, 0.93377, 1.19413},
2336 {0.88916, 0.89010, 0.89320, 0.89920, 0.91136, 0.96117,
2337 0.94235, 0.93822, 0.94828, 0.98480, 1.24538},
2338 {0.94036, 0.94113, 0.94422, 0.95023, 0.96241, 1.01220,
2339 0.99310, 0.98927, 0.99933, 1.03585, 1.29629},
2340 {0.99139, 0.99220, 0.99525, 1.00127, 1.01344, 1.06324,
2341 1.04451, 1.04033, 1.04836, 1.08690, 1.34727},
2342 {1.04261, 1.04325, 1.04628, 1.05232, 1.06448, 1.12090,
2343 1.09546, 1.09136, 1.10142, 1.13795, 1.39831},
2344 {1.09331, 1.09429, 1.09742, 1.10336, 1.11557, 1.16547,
2345 1.14658, 1.13642, 1.15247, 1.18898, 1.44936},
2346 {1.14436, 1.14539, 1.14847, 1.15443, 1.16662, 1.21794,
2347 1.19763, 1.19329, 1.20349, 1.23956, 1.50043},
2348 {1.19533, 1.19651, 1.19943, 1.20548, 1.21666, 1.26753,
2349 1.24862, 1.24434, 1.25455, 1.29106, 1.55142},
2350 {1.24638, 1.24756, 1.25046, 1.25648, 1.26764, 1.31858,
2351 1.29967, 1.29538, 1.30499, 1.34211, 1.60250},
2352 {1.29747, 1.29847, 1.30175, 1.30753, 1.31869, 1.36969,
2353 1.35069, 1.34656, 1.35663, 1.39316, 1.64644},
2354 {1.35537, 1.34952, 1.35255, 1.35869, 1.36973, 1.41387,
2355 1.40173, 1.39761, 1.40768, 1.44396, 1.70238},
2356 {1.39956, 1.40056, 1.40380, 1.40961, 1.42178, 1.46492,
2357 1.45278, 1.45423, 1.45872, 1.49522, 1.75557},
2358 {1.45080, 1.45159, 1.45463, 1.46109, 1.47287, 1.52263,
2359 1.50382, 1.50050, 1.50977, 1.54502, 1.80670},
2360 {1.50165, 1.50264, 1.50570, 1.51214, 1.52233, 1.57370,
2361 1.55484, 1.55155, 1.56080, 1.59731, 1.85778},
2362 {1.55269, 1.55364, 1.55675, 1.56274, 1.57491, 1.62598,
2363 1.60590, 1.60259, 1.61185, 1.64836, 1.90883},
2364 {1.60368, 1.60469, 1.60779, 1.61373, 1.62596, 1.67738,
2365 1.65651, 1.65249, 1.66290, 1.69936, 1.95959}};
2366
2367 // Garfield simulation at UD = -2200V; vd = 2.134cm/microsec, <driftfield> = 753V/cm
2368 Float_t time2200[ktimebin][kZbin] =
2369 {{0.09162, 0.09194, 0.09292, 0.09460, 0.09702, 0.10014,
2370 0.10421, 0.10971, 0.11820, 0.13990, 0.37745},
2371 {0.06581, 0.06618, 0.06730, 0.06915, 0.07173, 0.07507,
2372 0.07931, 0.08497, 0.09368, 0.11609, 0.35560},
2373 {0.03947, 0.04001, 0.04167, 0.04429, 0.04772, 0.05183,
2374 0.05667, 0.06293, 0.07292, 0.09900, 0.34673},
2375 {0.01111, 0.01280, 0.01716, 0.02279, 0.02876, 0.03473,
2376 0.04091, 0.04907, 0.06426, 0.10620, 0.36766},
2377 {0.01113, 0.01285, 0.01719, 0.02276, 0.02863, 0.03452,
2378 0.04076, 0.04960, 0.06745, 0.11419, 0.37139},
2379 {0.03923, 0.03978, 0.04137, 0.04387, 0.04713, 0.05110,
2380 0.05605, 0.06284, 0.07551, 0.10677, 0.36210},
2381 {0.06505, 0.06540, 0.06644, 0.06820, 0.07069, 0.07401,
2382 0.07852, 0.08479, 0.09565, 0.12325, 0.37313},
2383 {0.09107, 0.09127, 0.09181, 0.09291, 0.09474, 0.00000,
2384 0.10883, 0.11528, 0.12789, 0.15865, 0.41313},
2385 {0.12559, 0.12622, 0.12800, 0.13206, 0.14166, 0.19331,
2386 0.16832, 0.16632, 0.17724, 0.21218, 0.47098},
2387 {0.16992, 0.17070, 0.17325, 0.17831, 0.18871, 0.23557,
2388 0.21690, 0.21451, 0.22514, 0.26082, 0.52034},
2389 {0.21640, 0.21722, 0.21987, 0.22500, 0.23540, 0.28097,
2390 0.26399, 0.26154, 0.27214, 0.30784, 0.56734},
2391 {0.26318, 0.26400, 0.26679, 0.27181, 0.28220, 0.32739,
2392 0.31090, 0.30842, 0.31902, 0.35474, 0.61415},
2393 {0.31001, 0.31085, 0.31348, 0.31866, 0.32903, 0.37412,
2394 0.35777, 0.35546, 0.36588, 0.40159, 0.66103},
2395 {0.35687, 0.35769, 0.36033, 0.36556, 0.37588, 0.42094,
2396 0.40523, 0.40214, 0.41273, 0.44841, 0.70785},
2397 {0.40372, 0.40457, 0.40723, 0.41234, 0.42273, 0.46778,
2398 0.45148, 0.44903, 0.45961, 0.49526, 0.75486},
2399 {0.45062, 0.45139, 0.45404, 0.45966, 0.46958, 0.51470,
2400 0.49833, 0.49584, 0.50644, 0.54211, 0.80160},
2401 {0.49742, 0.49825, 0.50088, 0.50605, 0.51644, 0.56148,
2402 0.54518, 0.54270, 0.55330, 0.58897, 0.84854},
2403 {0.54427, 0.54510, 0.54774, 0.55290, 0.56329, 0.60846,
2404 0.59203, 0.58955, 0.60014, 0.63578, 0.89528},
2405 {0.59119, 0.59199, 0.59471, 0.59975, 0.61014, 0.65533,
2406 0.63889, 0.63636, 0.64699, 0.68269, 0.94197},
2407 {0.63866, 0.63880, 0.64145, 0.64664, 0.65701, 0.70639,
2408 0.68574, 0.68325, 0.69385, 0.72949, 0.98900},
2409 {0.68483, 0.68566, 0.68831, 0.69347, 0.70386, 0.74890,
2410 0.73260, 0.73010, 0.74069, 0.77638, 1.03320},
2411 {0.73168, 0.73255, 0.73515, 0.74031, 0.75072, 0.79576,
2412 0.77117, 0.77501, 0.78755, 0.82318, 1.08006},
2413 {0.77854, 0.78310, 0.78200, 0.79525, 0.79756, 0.84281,
2414 0.81803, 0.82393, 0.83441, 0.87008, 1.12692},
2415 {0.82541, 0.82642, 0.82916, 0.83528, 0.84442, 0.89086,
2416 0.87315, 0.87079, 0.88125, 0.91694, 1.17648},
2417 {0.87226, 0.87308, 0.87602, 0.88086, 0.89128, 0.93772,
2418 0.92001, 0.91751, 0.92811, 0.95587, 1.22328},
2419 {0.91921, 0.91994, 0.92256, 0.92772, 0.94713, 0.98566,
2420 0.96690, 0.96436, 0.97495, 1.01064, 1.26882},
2421 {0.96790, 0.96679, 0.96941, 0.97463, 0.99399, 1.03001,
2422 1.01376, 1.01112, 1.02181, 1.05749, 1.31568},
2423 {1.01278, 1.01390, 1.01674, 1.02147, 1.03182, 1.07820,
2424 1.06056, 1.05798, 1.06867, 1.10433, 1.36390},
2425 {1.05964, 1.06076, 1.06331, 1.06833, 1.07870, 1.13297,
2426 1.10742, 1.10520, 1.11543, 1.15120, 1.41069},
2427 {1.10664, 1.10762, 1.10997, 1.11519, 1.12556, 1.17531,
2428 1.15427, 1.14620, 1.16229, 1.19805, 1.45758},
2429 {1.15352, 1.15421, 1.15683, 1.16218, 1.17242, 1.21910,
2430 1.20035, 1.19863, 1.20579, 1.24473, 1.50412},
2431 {1.20019, 1.20115, 1.20369, 1.20892, 1.21928, 1.26913,
2432 1.24721, 1.24549, 1.25605, 1.29159, 1.54920},
2433 {1.24707, 1.24846, 1.25052, 1.25602, 1.26608, 1.31558,
2434 1.29448, 1.29232, 1.30293, 1.33675, 1.59798},
2435 {1.29391, 1.29475, 1.29738, 1.30255, 1.31294, 1.36244,
2436 1.34167, 1.33918, 1.34979, 1.38229, 1.64496},
2437 {1.34078, 1.34304, 1.34424, 1.35565, 1.35980, 1.40930,
2438 1.38853, 1.38229, 1.39664, 1.42863, 1.69162},
2439 {1.38762, 1.38847, 1.39110, 1.39627, 1.40666, 1.45183,
2440 1.43539, 1.43289, 1.44348, 1.47549, 1.73876},
2441 {1.43524, 1.43533, 1.43796, 1.44310, 1.45371, 1.49305,
2442 1.48224, 1.47941, 1.49034, 1.52601, 1.78552},
2443 {1.48122, 1.48219, 1.48482, 1.48991, 1.50030, 1.53991,
2444 1.52898, 1.52653, 1.53653, 1.57282, 1.82386}};
2445
2446 if (fTimeStructInfo.fTimeStruct1) delete [] fTimeStructInfo.fTimeStruct1;
2447 fTimeStructInfo.fTimeStruct1 = new Float_t[ktimebin*kZbin];
2448
2449 if (fTimeStructInfo.fTimeStruct2) delete [] fTimeStructInfo.fTimeStruct2;
2450 fTimeStructInfo.fTimeStruct2 = new Float_t[ktimebin*kZbin];
2451
2452 for (Int_t ctrt = 0; ctrt<ktimebin; ctrt++) {
2453 for (Int_t ctrz = 0; ctrz<kZbin; ctrz++) {
2454 if ( vdrift > fVDsmp[6] ) {
2455 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2456 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time2200[ctrt][ctrz];
2457 fTimeStructInfo.fVDlo = fVDsmp[6];
2458 fTimeStructInfo.fVDhi = fVDsmp[7];
2459 } else if ( vdrift > fVDsmp[5] ) {
2460 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2461 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2462 fTimeStructInfo.fVDlo = fVDsmp[5];
2463 fTimeStructInfo.fVDhi = fVDsmp[6];
2464 } else if ( vdrift > fVDsmp[4] ) {
2465 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2466 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2467 fTimeStructInfo.fVDlo = fVDsmp[4];
2468 fTimeStructInfo.fVDhi = fVDsmp[5];
2469 } else if ( vdrift > fVDsmp[3] ) {
2470 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2471 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2472 fTimeStructInfo.fVDlo = fVDsmp[3];
2473 fTimeStructInfo.fVDhi = fVDsmp[4];
2474 } else if ( vdrift > fVDsmp[2] ) {
2475 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2476 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2477 fTimeStructInfo.fVDlo = fVDsmp[2];
2478 fTimeStructInfo.fVDhi = fVDsmp[3];
2479 } else if ( vdrift > fVDsmp[1] ) {
2480 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2481 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2482 fTimeStructInfo.fVDlo = fVDsmp[1];
2483 fTimeStructInfo.fVDhi = fVDsmp[2];
2484 } else if ( vdrift > (fVDsmp[0] - 1.e-5) ) {
2485 fTimeStructInfo.fTimeStruct1[ctrt+ctrz*ktimebin] = time1500[ctrt][ctrz];
2486 fTimeStructInfo.fTimeStruct2[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2487 fTimeStructInfo.fVDlo = fVDsmp[0];
2488 fTimeStructInfo.fVDhi = fVDsmp[1];
2489 }
2490 }
2491 }
2492}
2493
2494//_____________________________________________________________________________
2495void AliTRDdigitizer::RecalcDiffusion(Float_t vdrift)
2496{
2497 if (vdrift == fDiffusionInfo.fLastVdrift)
2498 return;
7754cd1f 2499
3551db50 2500 AliTRDSimParam* simParam = AliTRDSimParam::Instance();
2501 if (!simParam)
2502 {
2503 printf("<AliTRDdigitizer::RecalcDiffusion> ");
2504 printf("Could not get simulation params\n");
2505 return;
2506 }
2507
2508 AliTRDCommonParam* commonParam = AliTRDCommonParam::Instance();
2509 if (!commonParam)
2510 {
2511 printf("<AliTRDdigitizer::RecalcDiffusion> ");
2512 printf("Could not get common params\n");
2513 return;
2514 }
2515
2516 AliTRDcalibDB* calibration = AliTRDcalibDB::Instance();
2517 if (!calibration)
2518 {
2519 printf("<AliTRDdigitizer::RecalcDiffusion> ");
2520 printf("Could not get calibration object\n");
2521 return;
2522 }
2523
2524 Float_t field = commonParam->GetField();
2525 fDiffusionInfo.fLastVdrift = vdrift;
2526
2527 //DiffusionL
2528 {
2529 const Int_t kNb = 5;
2530 Float_t p0[kNb] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 };
2531 Float_t p1[kNb] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 };
2532 Float_t p2[kNb] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 };
2533 Float_t p3[kNb] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 };
2534
2535 Int_t ib = ((Int_t) (10 * (field - 0.15)));
2536 ib = TMath::Max( 0,ib);
2537 ib = TMath::Min(kNb,ib);
2538
2539 fDiffusionInfo.fDiffusionL = p0[ib]
2540 + p1[ib] * vdrift
2541 + p2[ib] * vdrift*vdrift
2542 + p3[ib] * vdrift*vdrift*vdrift;
2543 }
2544
2545 //DiffusionT
2546 {
2547 const Int_t kNb = 5;
2548 Float_t p0[kNb] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 };
2549 Float_t p1[kNb] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 };
2550 Float_t p2[kNb] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 };
2551 Float_t p3[kNb] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 };
2552
2553 Int_t ib = ((Int_t) (10 * (field - 0.15)));
2554 ib = TMath::Max( 0,ib);
2555 ib = TMath::Min(kNb,ib);
2556
2557 fDiffusionInfo.fDiffusionT = p0[ib]
2558 + p1[ib] * vdrift
2559 + p2[ib] * vdrift*vdrift
2560 + p3[ib] * vdrift*vdrift*vdrift;
2561 }
2562
2563 //OmegaTau
2564 fDiffusionInfo.fOmegaTau = calibration->GetOmegaTau(vdrift);
2565
2566 //Lorentzfactor
2567 {
2568 if (commonParam->ExBOn()) {
2569 fDiffusionInfo.fLorentzFactor = 1.0 / (1.0 + fDiffusionInfo.fOmegaTau*fDiffusionInfo.fOmegaTau);
2570 }
2571 else {
2572 fDiffusionInfo.fLorentzFactor = 1.0;
2573 }
2574 }
2575}
2576
2577//_____________________________________________________________________________
2578Float_t AliTRDdigitizer::GetDiffusionL(Float_t vdrift)
2579{
2580 //
2581 // Returns the longitudinal diffusion coefficient for a given drift
2582 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2583 // The values are according to a GARFIELD simulation.
2584 //
2585
2586 RecalcDiffusion(vdrift);
2587 return fDiffusionInfo.fDiffusionL;
2588}
2589
2590//_____________________________________________________________________________
2591Float_t AliTRDdigitizer::GetDiffusionT(Float_t vdrift)
2592{
2593 //
2594 // Returns the transverse diffusion coefficient for a given drift
2595 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2596 // The values are according to a GARFIELD simulation.
2597 //
2598
2599 RecalcDiffusion(vdrift);
2600 return fDiffusionInfo.fDiffusionT;
2601}
2602
2603//_____________________________________________________________________________
2604Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t driftlength, Double_t *xyz)
2605{
2606 //
2607 // Applies the diffusion smearing to the position of a single electron
2608 //
2609
2610 RecalcDiffusion(vdrift);
2611
2612 Float_t driftSqrt = TMath::Sqrt(driftlength);
2613 Float_t sigmaT = driftSqrt * fDiffusionInfo.fDiffusionT;
2614 Float_t sigmaL = driftSqrt * fDiffusionInfo.fDiffusionL;
2615 xyz[0] = gRandom->Gaus(xyz[0], sigmaL * GetLorentzFactor(vdrift));
2616 xyz[1] = gRandom->Gaus(xyz[1], sigmaT * GetLorentzFactor(vdrift));
2617 xyz[2] = gRandom->Gaus(xyz[2], sigmaT);
2618
2619 return 1;
2620}
2621
2622//_____________________________________________________________________________
2623Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
2624{
2625 RecalcDiffusion(vd);
2626 return fDiffusionInfo.fLorentzFactor;
2627}
2628
2629//_____________________________________________________________________________
2630Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t *xyz)
2631{
2632 //
2633 // Applies E x B effects to the position of a single electron
2634 //
2635
2636 RecalcDiffusion(vdrift);
2637
2638 xyz[0] = xyz[0];
2639 xyz[1] = xyz[1] + fDiffusionInfo.fOmegaTau * driftlength;
2640 xyz[2] = xyz[2];
2641
2642 return 1;
2643}