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Phi according to alice convention. (R. Arnaldi)
[u/mrichter/AliRoot.git] / TRD / AliTRDdigitizer.cxx
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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
625f5260 18////////////////////////////////////////////////////////////////////////////
19// //
20// Creates and handles digits from TRD hits //
21// //
22// Authors: C. Blume (blume@ikf.uni-frankfurt.de) //
23// C. Lippmann //
24// B. Vulpescu //
25// //
26// The following effects are included: //
27// - Diffusion //
28// - ExB effects //
29// - Gas gain including fluctuations //
30// - Pad-response (simple Gaussian approximation) //
31// - Time-response //
32// - Electronics noise //
33// - Electronics gain //
34// - Digitization //
b65e5048 35// - Zero suppression //
625f5260 36// //
37////////////////////////////////////////////////////////////////////////////
6798b56e 38
793ff80c 39#include <TF1.h>
f7a1cc68 40#include <TFile.h>
41#include <TGeoGlobalMagField.h>
42#include <TGeoManager.h>
abaf1f1d 43#include <TList.h>
f7a1cc68 44#include <TMath.h>
45#include <TROOT.h>
46#include <TRandom.h>
85cbec76 47#include <TTask.h>
f7a1cc68 48#include <TTree.h>
49#include <TVector.h>
26d3c914 50
793ff80c 51#include "AliRun.h"
3e2e3ece 52#include "AliMC.h"
88cb7938 53#include "AliRunLoader.h"
54#include "AliLoader.h"
55#include "AliConfig.h"
db30bf0f 56#include "AliMagF.h"
85cbec76 57#include "AliRunDigitizer.h"
88cb7938 58#include "AliRunLoader.h"
59#include "AliLoader.h"
ad2cc20b 60#include "AliLog.h"
f7336fa3 61#include "AliTRD.h"
793ff80c 62#include "AliTRDhit.h"
f7336fa3 63#include "AliTRDdigitizer.h"
b65e5048 64
65#include "AliTRDarrayDictionary.h"
66#include "AliTRDarrayADC.h"
67#include "AliTRDarraySignal.h"
da581aea 68#include "AliTRDdigitsManager.h"
793ff80c 69#include "AliTRDgeometry.h"
a5cadd36 70#include "AliTRDpadPlane.h"
3551db50 71#include "AliTRDcalibDB.h"
72#include "AliTRDSimParam.h"
73#include "AliTRDCommonParam.h"
ecf39416 74#include "AliTRDfeeParam.h"
b65e5048 75#include "AliTRDmcmSim.h"
4329977a 76#include "Cal/AliTRDCalROC.h"
77#include "Cal/AliTRDCalDet.h"
78
f7336fa3 79ClassImp(AliTRDdigitizer)
80
81//_____________________________________________________________________________
85cbec76 82AliTRDdigitizer::AliTRDdigitizer()
4d18a639 83 :AliDigitizer()
84 ,fRunLoader(0)
85 ,fDigitsManager(0)
86 ,fSDigitsManager(0)
87 ,fSDigitsManagerList(0)
88 ,fTRD(0)
89 ,fGeo(0)
90 ,fEvent(0)
91 ,fMasks(0)
92 ,fCompress(kTRUE)
93 ,fSDigits(kFALSE)
4d18a639 94 ,fMergeSignalOnly(kFALSE)
95 ,fDiffLastVdrift(0)
96 ,fDiffusionT(0.0)
97 ,fDiffusionL(0.0)
98 ,fOmegaTau(0.0)
99 ,fLorentzFactor(0.0)
100 ,fTimeLastVdrift(0)
101 ,fTimeStruct1(0)
102 ,fTimeStruct2(0)
103 ,fVDlo(0)
104 ,fVDhi(0)
f7336fa3 105{
106 //
107 // AliTRDdigitizer default constructor
108 //
3551db50 109
110 Init();
3becff3c 111
f7336fa3 112}
113
114//_____________________________________________________________________________
4d18a639 115AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
116 :AliDigitizer(name,title)
117 ,fRunLoader(0)
118 ,fDigitsManager(0)
119 ,fSDigitsManager(0)
120 ,fSDigitsManagerList(0)
121 ,fTRD(0)
122 ,fGeo(0)
123 ,fEvent(0)
124 ,fMasks(0)
125 ,fCompress(kTRUE)
126 ,fSDigits(kFALSE)
4d18a639 127 ,fMergeSignalOnly(kFALSE)
128 ,fDiffLastVdrift(0)
129 ,fDiffusionT(0.0)
130 ,fDiffusionL(0.0)
131 ,fOmegaTau(0.0)
132 ,fLorentzFactor(0.0)
133 ,fTimeLastVdrift(0)
134 ,fTimeStruct1(0)
135 ,fTimeStruct2(0)
136 ,fVDlo(0)
137 ,fVDhi(0)
f7336fa3 138{
139 //
85cbec76 140 // AliTRDdigitizer constructor
141 //
142
3551db50 143 Init();
3becff3c 144
85cbec76 145}
146
147//_____________________________________________________________________________
148AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
4d18a639 149 , const Text_t *name, const Text_t *title)
150 :AliDigitizer(manager,name,title)
151 ,fRunLoader(0)
152 ,fDigitsManager(0)
153 ,fSDigitsManager(0)
154 ,fSDigitsManagerList(0)
155 ,fTRD(0)
156 ,fGeo(0)
157 ,fEvent(0)
158 ,fMasks(0)
159 ,fCompress(kTRUE)
160 ,fSDigits(kFALSE)
4d18a639 161 ,fMergeSignalOnly(kFALSE)
162 ,fDiffLastVdrift(0)
163 ,fDiffusionT(0.0)
164 ,fDiffusionL(0.0)
165 ,fOmegaTau(0.0)
166 ,fLorentzFactor(0.0)
167 ,fTimeLastVdrift(0)
168 ,fTimeStruct1(0)
169 ,fTimeStruct2(0)
170 ,fVDlo(0)
171 ,fVDhi(0)
85cbec76 172{
173 //
174 // AliTRDdigitizer constructor
f7336fa3 175 //
176
3551db50 177 Init();
3becff3c 178
bfc40adc 179}
180
181//_____________________________________________________________________________
182AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
4d18a639 183 :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
184 ,fRunLoader(0)
185 ,fDigitsManager(0)
186 ,fSDigitsManager(0)
187 ,fSDigitsManagerList(0)
188 ,fTRD(0)
189 ,fGeo(0)
190 ,fEvent(0)
191 ,fMasks(0)
192 ,fCompress(kTRUE)
193 ,fSDigits(kFALSE)
4d18a639 194 ,fMergeSignalOnly(kFALSE)
195 ,fDiffLastVdrift(0)
196 ,fDiffusionT(0.0)
197 ,fDiffusionL(0.0)
198 ,fOmegaTau(0.0)
199 ,fLorentzFactor(0.0)
200 ,fTimeLastVdrift(0)
201 ,fTimeStruct1(0)
202 ,fTimeStruct2(0)
203 ,fVDlo(0)
204 ,fVDhi(0)
bfc40adc 205{
206 //
207 // AliTRDdigitizer constructor
208 //
209
3551db50 210 Init();
3becff3c 211
3551db50 212}
88cb7938 213
3551db50 214//_____________________________________________________________________________
215Bool_t AliTRDdigitizer::Init()
216{
3becff3c 217 //
218 // Initialize the digitizer with default values
219 //
220
85a5290f 221 fRunLoader = 0;
4487dad0 222 fDigitsManager = 0;
4487dad0 223 fSDigitsManager = 0;
85a5290f 224 fSDigitsManagerList = 0;
4487dad0 225 fTRD = 0;
226 fGeo = 0;
3becff3c 227
b65e5048 228
abaf1f1d 229 fEvent = 0;
85a5290f 230 fMasks = 0;
abaf1f1d 231 fCompress = kTRUE;
abaf1f1d 232 fSDigits = kFALSE;
4487dad0 233 fMergeSignalOnly = kFALSE;
3551db50 234
4d18a639 235 fTimeLastVdrift = -1;
236 fTimeStruct1 = 0;
237 fTimeStruct2 = 0;
238 fVDlo = 0;
239 fVDhi = 0;
3551db50 240
4d18a639 241 fDiffLastVdrift = -1;
242 fDiffusionT = 0.0;
243 fDiffusionL = 0.0;
244 fLorentzFactor = 0.0;
793ff80c 245
3551db50 246 return AliDigitizer::Init();
3becff3c 247
f7336fa3 248}
249
8230f242 250//_____________________________________________________________________________
4d18a639 251AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d)
252 :AliDigitizer(d)
253 ,fRunLoader(0)
254 ,fDigitsManager(0)
255 ,fSDigitsManager(0)
256 ,fSDigitsManagerList(0)
257 ,fTRD(0)
258 ,fGeo(0)
259 ,fEvent(0)
260 ,fMasks(0)
261 ,fCompress(d.fCompress)
262 ,fSDigits(d.fSDigits)
4d18a639 263 ,fMergeSignalOnly(d.fMergeSignalOnly)
264 ,fDiffLastVdrift(-1)
265 ,fDiffusionT(0.0)
266 ,fDiffusionL(0.0)
267 ,fOmegaTau(0.0)
268 ,fLorentzFactor(0.0)
269 ,fTimeLastVdrift(-1)
270 ,fTimeStruct1(0)
271 ,fTimeStruct2(0)
272 ,fVDlo(0)
273 ,fVDhi(0)
8230f242 274{
275 //
276 // AliTRDdigitizer copy constructor
277 //
278
4d18a639 279 // Do not copy timestructs, just invalidate lastvdrift.
280 // Next time they are requested, they get recalculated
281 if (((AliTRDdigitizer &) d).fTimeStruct1) {
b65e5048 282 delete [] ((AliTRDdigitizer &) d).fTimeStruct1;
4d18a639 283 ((AliTRDdigitizer &) d).fTimeStruct1 = 0;
284 }
285 if (((AliTRDdigitizer &) d).fTimeStruct2) {
286 delete [] ((AliTRDdigitizer &) d).fTimeStruct2;
287 ((AliTRDdigitizer &) d).fTimeStruct2 = 0;
288 }
8230f242 289
290}
291
f7336fa3 292//_____________________________________________________________________________
293AliTRDdigitizer::~AliTRDdigitizer()
294{
8230f242 295 //
296 // AliTRDdigitizer destructor
297 //
f7336fa3 298
abaf1f1d 299 if (fDigitsManager) {
300 delete fDigitsManager;
4d18a639 301 fDigitsManager = 0;
f7336fa3 302 }
303
b65e5048 304 if (fDigitsManager) { //typo? fSDigitsManager?
4d18a639 305 delete fSDigitsManager;
306 fSDigitsManager = 0;
307 }
f7336fa3 308
abaf1f1d 309 if (fSDigitsManagerList) {
47b5729a 310 fSDigitsManagerList->Delete();
abaf1f1d 311 delete fSDigitsManagerList;
4487dad0 312 fSDigitsManagerList = 0;
e23fbb27 313 }
314
315 if (fMasks) {
316 delete [] fMasks;
4329977a 317 fMasks = 0;
e23fbb27 318 }
319
4d18a639 320 if (fTimeStruct1) {
321 delete [] fTimeStruct1;
322 fTimeStruct1 = 0;
3551db50 323 }
324
4d18a639 325 if (fTimeStruct2) {
326 delete [] fTimeStruct2;
327 fTimeStruct2 = 0;
3551db50 328 }
3becff3c 329
f162af62 330 if (fGeo) {
331 delete fGeo;
332 fGeo = 0;
333 }
334
f7336fa3 335}
336
8230f242 337//_____________________________________________________________________________
dd9a6ee3 338AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
339{
340 //
341 // Assignment operator
342 //
343
625f5260 344 if (this != &d) {
345 ((AliTRDdigitizer &) d).Copy(*this);
346 }
4d18a639 347
dd9a6ee3 348 return *this;
349
350}
351
352//_____________________________________________________________________________
e0d47c25 353void AliTRDdigitizer::Copy(TObject &d) const
8230f242 354{
355 //
356 // Copy function
357 //
358
85a5290f 359 ((AliTRDdigitizer &) d).fRunLoader = 0;
4487dad0 360 ((AliTRDdigitizer &) d).fDigitsManager = 0;
85a5290f 361 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
362 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
4487dad0 363 ((AliTRDdigitizer &) d).fTRD = 0;
364 ((AliTRDdigitizer &) d).fGeo = 0;
85a5290f 365 ((AliTRDdigitizer &) d).fEvent = 0;
366 ((AliTRDdigitizer &) d).fMasks = 0;
abaf1f1d 367 ((AliTRDdigitizer &) d).fCompress = fCompress;
abaf1f1d 368 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
4487dad0 369 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
0c24ba98 370
3551db50 371 AliTRDdigitizer& target = (AliTRDdigitizer &) d;
372
3becff3c 373 // Do not copy timestructs, just invalidate lastvdrift.
374 // Next time they are requested, they get recalculated
4d18a639 375 if (target.fTimeStruct1) {
95867fd1 376 delete [] target.fTimeStruct1;
4d18a639 377 target.fTimeStruct1 = 0;
3551db50 378 }
4d18a639 379 if (target.fTimeStruct2) {
95867fd1 380 delete [] target.fTimeStruct2;
4d18a639 381 target.fTimeStruct2 = 0;
3becff3c 382 }
4d18a639 383 target.fTimeLastVdrift = -1;
3becff3c 384
e23fbb27 385}
386
e23fbb27 387//_____________________________________________________________________________
4d18a639 388void AliTRDdigitizer::Exec(Option_t *option)
e23fbb27 389{
390 //
391 // Executes the merging
392 //
393
394 Int_t iInput;
395
396 AliTRDdigitsManager *sdigitsManager;
397
398 TString optionString = option;
399 if (optionString.Contains("deb")) {
9afbd7de 400 AliLog::SetClassDebugLevel("AliTRDdigitizer",1);
7925de54 401 AliInfo("Called with debug option");
e23fbb27 402 }
403
cec4059b 404 // The AliRoot file is already connected by the manager
625f5260 405 AliRunLoader *inrl = 0x0;
88cb7938 406
9afbd7de 407 if (gAlice) {
7925de54 408 AliDebug(1,"AliRun object found on file.");
9afbd7de 409 }
4487dad0 410 else {
88cb7938 411 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
412 inrl->LoadgAlice();
413 gAlice = inrl->GetAliRun();
9afbd7de 414 if (!gAlice) {
7925de54 415 AliError("Could not find AliRun object.")
9afbd7de 416 return;
417 }
4487dad0 418 }
cec4059b 419
e23fbb27 420 Int_t nInput = fManager->GetNinputs();
4d18a639 421 fMasks = new Int_t[nInput];
e23fbb27 422 for (iInput = 0; iInput < nInput; iInput++) {
423 fMasks[iInput] = fManager->GetMask(iInput);
424 }
e23fbb27 425
9afbd7de 426 //
e23fbb27 427 // Initialization
9afbd7de 428 //
e23fbb27 429
95867fd1 430 AliRunLoader *orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
431
67c67368 432 if (InitDetector()) {
9afbd7de 433
95867fd1 434 AliLoader *ogime = orl->GetLoader("TRDLoader");
67c67368 435
95867fd1 436 TTree *tree = 0;
9afbd7de 437 if (fSDigits) {
438 // If we produce SDigits
439 tree = ogime->TreeS();
440 if (!tree) {
441 ogime->MakeTree("S");
67c67368 442 tree = ogime->TreeS();
67c67368 443 }
9afbd7de 444 }
445 else {
446 // If we produce Digits
447 tree = ogime->TreeD();
448 if (!tree) {
449 ogime->MakeTree("D");
450 tree = ogime->TreeD();
67c67368 451 }
9afbd7de 452 }
453
67c67368 454 MakeBranch(tree);
9afbd7de 455
67c67368 456 }
457
e23fbb27 458 for (iInput = 0; iInput < nInput; iInput++) {
459
7925de54 460 AliDebug(1,Form("Add input stream %d",iInput));
e23fbb27 461
9afbd7de 462 // Check if the input tree exists
88cb7938 463 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
4d18a639 464 AliLoader *gime = inrl->GetLoader("TRDLoader");
88cb7938 465
4d18a639 466 TTree *treees = gime->TreeS();
9afbd7de 467 if (treees == 0x0) {
468 if (gime->LoadSDigits()) {
469 AliError(Form("Error Occured while loading S. Digits for input %d.",iInput));
470 return;
471 }
4d18a639 472 treees = gime->TreeS();
9afbd7de 473 }
88cb7938 474
475 if (treees == 0x0) {
7925de54 476 AliError(Form("Input stream %d does not exist",iInput));
c57e2264 477 return;
478 }
479
e23fbb27 480 // Read the s-digits via digits manager
481 sdigitsManager = new AliTRDdigitsManager();
e23fbb27 482 sdigitsManager->SetSDigits(kTRUE);
88cb7938 483
4d18a639 484 AliRunLoader *rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
485 AliLoader *gimme = rl->GetLoader("TRDLoader");
b65e5048 486 if (!gimme->TreeS())
487 {
488 gimme->LoadSDigits();
489 }
e23fbb27 490
b65e5048 491 sdigitsManager->ReadDigits(gimme->TreeS());
492
e23fbb27 493 // Add the s-digits to the input list
494 AddSDigitsManager(sdigitsManager);
495
496 }
497
498 // Convert the s-digits to normal digits
7925de54 499 AliDebug(1,"Do the conversion");
e23fbb27 500 SDigits2Digits();
501
502 // Store the digits
7925de54 503 AliDebug(1,"Write the digits");
e23fbb27 504 fDigitsManager->WriteDigits();
88cb7938 505
9afbd7de 506 // Write parameters
67c67368 507 orl->CdGAFile();
67c67368 508
26d3c914 509 // Clean up
b1113c6b 510 DeleteSDigitsManager();
511
26d3c914 512 AliDebug(1,"Done");
513
e23fbb27 514}
515
f7336fa3 516//_____________________________________________________________________________
e23fbb27 517Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
f7336fa3 518{
519 //
520 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
521 //
f7336fa3 522 // Connect the AliRoot file containing Geometry, Kine, and Hits
3becff3c 523 //
f540341d 524
e191bb57 525 TString evfoldname = AliConfig::GetDefaultEventFolderName();
9afbd7de 526
f540341d 527 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
9afbd7de 528 if (!fRunLoader) {
529 fRunLoader = AliRunLoader::Open(file,evfoldname,"UPDATE");
530 }
9afbd7de 531 if (!fRunLoader) {
95867fd1 532 AliError(Form("Can not open session for file %s.",file));
533 return kFALSE;
534 }
535
536 if (!fRunLoader->GetAliRun()) {
537 fRunLoader->LoadgAlice();
538 }
539 gAlice = fRunLoader->GetAliRun();
540
541 if (gAlice) {
7925de54 542 AliDebug(1,"AliRun object found on file.");
95867fd1 543 }
544 else {
7925de54 545 AliError("Could not find AliRun object.");
95867fd1 546 return kFALSE;
547 }
548
549 fEvent = nEvent;
550
551 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
552 if (!loader) {
553 AliError("Can not get TRD loader from Run Loader");
554 return kFALSE;
555 }
556
557 if (InitDetector()) {
558 TTree *tree = 0;
559 if (fSDigits) {
560 // If we produce SDigits
561 tree = loader->TreeS();
562 if (!tree) {
563 loader->MakeTree("S");
564 tree = loader->TreeS();
565 }
566 }
567 else {
568 // If we produce Digits
569 tree = loader->TreeD();
570 if (!tree) {
571 loader->MakeTree("D");
572 tree = loader->TreeD();
573 }
574 }
575 return MakeBranch(tree);
576 }
577 else {
578 return kFALSE;
579 }
580
581}
582
583//_____________________________________________________________________________
584Bool_t AliTRDdigitizer::Open(AliRunLoader *runLoader, Int_t nEvent)
585{
586 //
587 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
588 //
589 // Connect the AliRoot file containing Geometry, Kine, and Hits
590 //
591
592 fRunLoader = runLoader;
593 if (!fRunLoader) {
594 AliError("RunLoader does not exist");
595 return kFALSE;
4d18a639 596 }
88cb7938 597
9afbd7de 598 if (!fRunLoader->GetAliRun()) {
599 fRunLoader->LoadgAlice();
600 }
88cb7938 601 gAlice = fRunLoader->GetAliRun();
602
da581aea 603 if (gAlice) {
7925de54 604 AliDebug(1,"AliRun object found on file.");
da581aea 605 }
606 else {
7925de54 607 AliError("Could not find AliRun object.");
da581aea 608 return kFALSE;
609 }
f7336fa3 610
611 fEvent = nEvent;
612
4d18a639 613 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 614 if (!loader) {
615 AliError("Can not get TRD loader from Run Loader");
616 return kFALSE;
617 }
88cb7938 618
abaf1f1d 619 if (InitDetector()) {
4d18a639 620 TTree *tree = 0;
9afbd7de 621 if (fSDigits) {
622 // If we produce SDigits
623 tree = loader->TreeS();
624 if (!tree) {
625 loader->MakeTree("S");
626 tree = loader->TreeS();
4d18a639 627 }
9afbd7de 628 }
629 else {
630 // If we produce Digits
95867fd1 631 tree = loader->TreeD();
9afbd7de 632 if (!tree) {
633 loader->MakeTree("D");
634 tree = loader->TreeD();
4d18a639 635 }
9afbd7de 636 }
88cb7938 637 return MakeBranch(tree);
abaf1f1d 638 }
639 else {
640 return kFALSE;
641 }
793ff80c 642
643}
644
645//_____________________________________________________________________________
646Bool_t AliTRDdigitizer::InitDetector()
647{
648 //
649 // Sets the pointer to the TRD detector and the geometry
650 //
651
dd9a6ee3 652 // Get the pointer to the detector class and check for version 1
4487dad0 653 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
cec4059b 654 if (!fTRD) {
7925de54 655 AliFatal("No TRD module found");
cec4059b 656 exit(1);
657 }
dd9a6ee3 658 if (fTRD->IsVersion() != 1) {
7925de54 659 AliFatal("TRD must be version 1 (slow simulator)");
dd9a6ee3 660 exit(1);
661 }
662
663 // Get the geometry
f162af62 664 fGeo = new AliTRDgeometry();
dd9a6ee3 665
abaf1f1d 666 // Create a digits manager
625f5260 667 if (fDigitsManager) {
668 delete fDigitsManager;
669 }
abaf1f1d 670 fDigitsManager = new AliTRDdigitsManager();
671 fDigitsManager->SetSDigits(fSDigits);
672 fDigitsManager->CreateArrays();
673 fDigitsManager->SetEvent(fEvent);
abaf1f1d 674
675 // The list for the input s-digits manager to be merged
47b5729a 676 if (fSDigitsManagerList) {
677 fSDigitsManagerList->Delete();
3becff3c 678 }
679 else {
47b5729a 680 fSDigitsManagerList = new TList();
681 }
abaf1f1d 682
4487dad0 683 return kTRUE;
f7336fa3 684
685}
6244debe 686//_____________________________________________________________________________
95867fd1 687Bool_t AliTRDdigitizer::MakeBranch(TTree *tree) const
6244debe 688{
abaf1f1d 689 //
690 // Create the branches for the digits array
6244debe 691 //
692
88cb7938 693 return fDigitsManager->MakeBranch(tree);
6244debe 694
695}
696
625f5260 697//_____________________________________________________________________________
698void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
699{
700 //
701 // Add a digits manager for s-digits to the input list.
702 //
703
704 fSDigitsManagerList->Add(man);
705
706}
707
708//_____________________________________________________________________________
709void AliTRDdigitizer::DeleteSDigitsManager()
710{
711 //
712 // Removes digits manager from the input list.
713 //
714
715 fSDigitsManagerList->Delete();
716
717}
718
f7336fa3 719//_____________________________________________________________________________
720Bool_t AliTRDdigitizer::MakeDigits()
721{
722 //
872a7aba 723 // Creates digits.
f7336fa3 724 //
725
625f5260 726 AliDebug(1,"Start creating digits");
727
728 if (!fGeo) {
729 AliError("No geometry defined");
730 return kFALSE;
731 }
f7336fa3 732
625f5260 733 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
734 if (!calibration) {
735 AliFatal("Could not get calibration object");
736 return kFALSE;
737 }
738
739 const Int_t kNdet = AliTRDgeometry::Ndet();
740
741 Float_t **hits = new Float_t*[kNdet];
742 Int_t *nhit = new Int_t[kNdet];
743
b65e5048 744 AliTRDarraySignal *signals = 0x0;
625f5260 745
746 // Sort all hits according to detector number
747 if (!SortHits(hits,nhit)) {
748 AliError("Sorting hits failed");
749 return kFALSE;
750 }
751
752 // Loop through all detectors
753 for (Int_t det = 0; det < kNdet; det++) {
754
755 // Detectors that are switched off, not installed, etc.
756 if (( calibration->IsChamberInstalled(det)) &&
b65e5048 757 (!calibration->IsChamberMasked(det)) &&
625f5260 758 ( fGeo->ChamberInGeometry(det)) &&
759 (nhit[det] > 0)) {
760
b65e5048 761 signals = new AliTRDarraySignal();
762
625f5260 763 // Convert the hits of the current detector to detector signals
764 if (!ConvertHits(det,hits[det],nhit[det],signals)) {
b65e5048 765 AliError(Form("Conversion of hits failed for detector=%d",det));
625f5260 766 return kFALSE;
767 }
768 // Convert the detector signals to digits or s-digits
769 if (!ConvertSignals(det,signals)) {
b65e5048 770 AliError(Form("Conversion of signals failed for detector=%d",det));
771 return kFALSE;
625f5260 772 }
773
774 // Delete the signals array
775 delete signals;
776 signals = 0x0;
777
778 } // if: detector status
779
27cea06a 780 delete [] hits[det];
781
625f5260 782 } // for: detector
783
784 delete [] hits;
785 delete [] nhit;
786
787 return kTRUE;
788
789}
790
791//_____________________________________________________________________________
792Bool_t AliTRDdigitizer::SortHits(Float_t **hits, Int_t *nhit)
793{
794 //
795 // Read all the hits and sorts them according to detector number
796 // in the output array <hits>.
797 //
798
799 AliDebug(1,"Start sorting hits");
800
801 const Int_t kNdet = AliTRDgeometry::Ndet();
802 // Size of the hit vector
803 const Int_t kNhit = 6;
804
805 Float_t *xyz = 0;
806 Int_t nhitTrk = 0;
807
808 Int_t *lhit = new Int_t[kNdet];
809
810 for (Int_t det = 0; det < kNdet; det++) {
811 lhit[det] = 0;
812 nhit[det] = 0;
813 hits[det] = 0;
814 }
815
816 AliLoader *gimme = fRunLoader->GetLoader("TRDLoader");
817 if (!gimme->TreeH()) {
818 gimme->LoadHits();
819 }
820 TTree *hitTree = gimme->TreeH();
821 if (hitTree == 0x0) {
822 AliError("Can not get TreeH");
823 return kFALSE;
824 }
825 fTRD->SetTreeAddress();
826
827 // Get the number of entries in the hit tree
828 // (Number of primary particles creating a hit somewhere)
829 Int_t nTrk = (Int_t) hitTree->GetEntries();
830 AliDebug(1,Form("Found %d tracks",nTrk));
831
832 // Loop through all the tracks in the tree
833 for (Int_t iTrk = 0; iTrk < nTrk; iTrk++) {
834
3e2e3ece 835 gAlice->GetMCApp()->ResetHits();
625f5260 836 hitTree->GetEvent(iTrk);
837
838 if (!fTRD->Hits()) {
839 AliError(Form("No hits array for track = %d",iTrk));
840 continue;
841 }
842
843 // Number of hits for this track
844 nhitTrk = fTRD->Hits()->GetEntriesFast();
845
846 Int_t hitCnt = 0;
847 // Loop through the TRD hits
848 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
849 while (hit) {
850
851 hitCnt++;
852
853 // Don't analyze test hits
854 if (((Int_t) hit->GetCharge()) != 0) {
855
856 Int_t trk = hit->Track();
857 Int_t det = hit->GetDetector();
858 Int_t q = hit->GetCharge();
859 Float_t x = hit->X();
860 Float_t y = hit->Y();
861 Float_t z = hit->Z();
862 Float_t time = hit->GetTime();
863
864 if (nhit[det] == lhit[det]) {
865 // Inititialization of new detector
866 xyz = new Float_t[kNhit*(nhitTrk+lhit[det])];
867 if (hits[det]) {
868 memcpy(xyz,hits[det],sizeof(Float_t)*kNhit*lhit[det]);
869 delete [] hits[det];
870 }
871 lhit[det] += nhitTrk;
872 hits[det] = xyz;
873 }
874 else {
875 xyz = hits[det];
876 }
877 xyz[nhit[det]*kNhit+0] = x;
878 xyz[nhit[det]*kNhit+1] = y;
879 xyz[nhit[det]*kNhit+2] = z;
880 xyz[nhit[det]*kNhit+3] = q;
881 xyz[nhit[det]*kNhit+4] = trk;
882 xyz[nhit[det]*kNhit+5] = time;
883 nhit[det]++;
884
885 } // if: charge != 0
886
887 hit = (AliTRDhit *) fTRD->NextHit();
888
889 } // for: hits of one track
890
891 } // for: tracks
892
893 delete [] lhit;
894
895 return kTRUE;
896
897}
f7336fa3 898
625f5260 899//_____________________________________________________________________________
900Bool_t AliTRDdigitizer::ConvertHits(Int_t det, Float_t *hits, Int_t nhit
b65e5048 901 , AliTRDarraySignal *signals)
625f5260 902{
903 //
904 // Converts the detectorwise sorted hits to detector signals
905 //
906
907 AliDebug(1,Form("Start converting hits for detector=%d (nhits=%d)",det,nhit));
f7336fa3 908
793ff80c 909 // Number of pads included in the pad response
a5cadd36 910 const Int_t kNpad = 3;
793ff80c 911 // Number of track dictionary arrays
625f5260 912 const Int_t kNdict = AliTRDdigitsManager::kNDict;
913 // Size of the hit vector
914 const Int_t kNhit = 6;
793ff80c 915
4329977a 916 // Width of the amplification region
917 const Float_t kAmWidth = AliTRDgeometry::AmThick();
3becff3c 918 // Width of the drift region
ccb4315c 919 const Float_t kDrWidth = AliTRDgeometry::DrThick();
4329977a 920 // Drift + amplification region
921 const Float_t kDrMin = - 0.5 * kAmWidth;
922 const Float_t kDrMax = kDrWidth + 0.5 * kAmWidth;
3551db50 923
625f5260 924 Int_t iPad = 0;
925 Int_t dict = 0;
926 Int_t timeBinTRFend = 1;
872a7aba 927
a5cadd36 928 Double_t pos[3];
4329977a 929 Double_t loc[3];
a5cadd36 930 Double_t padSignal[kNpad];
931 Double_t signalOld[kNpad];
872a7aba 932
b65e5048 933 AliTRDarrayDictionary *dictionary[kNdict];
4329977a 934
9afbd7de 935 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 936 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
625f5260 937 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
938
3becff3c 939 if (!commonParam) {
4329977a 940 AliFatal("Could not get common parameterss");
3551db50 941 return kFALSE;
942 }
625f5260 943 if (!simParam) {
944 AliFatal("Could not get simulation parameters");
945 return kFALSE;
946 }
3becff3c 947 if (!calibration) {
4329977a 948 AliFatal("Could not get calibration object");
3551db50 949 return kFALSE;
950 }
951
625f5260 952 // Get the detector wise calibration objects
953 AliTRDCalROC *calVdriftROC = 0;
954 Float_t calVdriftDetValue = 0.0;
955 const AliTRDCalDet *calVdriftDet = calibration->GetVdriftDet();
956 AliTRDCalROC *calT0ROC = 0;
957 Float_t calT0DetValue = 0.0;
958 const AliTRDCalDet *calT0Det = calibration->GetT0Det();
4329977a 959
4329977a 960 if (simParam->TRFOn()) {
961 timeBinTRFend = ((Int_t) (simParam->GetTRFhi()
962 * commonParam->GetSamplingFrequency())) - 1;
4329977a 963 }
964
3becff3c 965 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
b43a3e17 966 Float_t samplingRate = commonParam->GetSamplingFrequency();
4329977a 967 Float_t elAttachProp = simParam->GetElAttachProp() / 100.0;
a328fff9 968
625f5260 969 AliTRDpadPlane *padPlane = fGeo->GetPadPlane(det);
b65e5048 970 Int_t layer = fGeo->GetLayer(det); //update
625f5260 971 Float_t row0 = padPlane->GetRow0ROC();
972 Int_t nRowMax = padPlane->GetNrows();
973 Int_t nColMax = padPlane->GetNcols();
974
975 // Create a new array for the signals
976 signals->Allocate(nRowMax,nColMax,nTimeTotal);
977
978 // Create a new array for the dictionary
979 for (dict = 0; dict < kNdict; dict++) {
b65e5048 980 dictionary[dict] = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
625f5260 981 dictionary[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
982 }
983
984 // Loop through the hits in this detector
985 for (Int_t hit = 0; hit < nhit; hit++) {
986
987 pos[0] = hits[hit*kNhit+0];
988 pos[1] = hits[hit*kNhit+1];
989 pos[2] = hits[hit*kNhit+2];
990 Float_t q = hits[hit*kNhit+3];
991 Float_t hittime = hits[hit*kNhit+5];
992 Int_t track = ((Int_t) hits[hit*kNhit+4]);
993
994 Int_t inDrift = 1;
995
996 // Find the current volume with the geo manager
997 gGeoManager->SetCurrentPoint(pos);
998 gGeoManager->FindNode();
999 if (strstr(gGeoManager->GetPath(),"/UK")) {
1000 inDrift = 0;
1001 }
793ff80c 1002
625f5260 1003 // Get the calibration objects
1004 calVdriftROC = calibration->GetVdriftROC(det);
1005 calVdriftDetValue = calVdriftDet->GetValue(det);
1006 calT0ROC = calibration->GetT0ROC(det);
1007 calT0DetValue = calT0Det->GetValue(det);
1008
1009 // Go to the local coordinate system:
1010 // loc[0] - col direction in amplification or driftvolume
1011 // loc[1] - row direction in amplification or driftvolume
1012 // loc[2] - time direction in amplification or driftvolume
1013 gGeoManager->MasterToLocal(pos,loc);
1014 if (inDrift) {
1015 // Relative to middle of amplification region
1016 loc[2] = loc[2] - kDrWidth/2.0 - kAmWidth/2.0;
1017 }
793ff80c 1018
625f5260 1019 // The driftlength [cm] (w/o diffusion yet !).
1020 // It is negative if the hit is between pad plane and anode wires.
1021 Double_t driftlength = -1.0 * loc[2];
e23fbb27 1022
625f5260 1023 // Stupid patch to take care of TR photons that are absorbed
1024 // outside the chamber volume. A real fix would actually need
1025 // a more clever implementation of the TR hit generation
1026 if (q < 0.0) {
1027 if ((loc[1] < padPlane->GetRowEndROC()) ||
1028 (loc[1] > padPlane->GetRow0ROC())) {
f881dc35 1029 continue;
1030 }
625f5260 1031 if ((driftlength < kDrMin) ||
1032 (driftlength > kDrMax)) {
1033 continue;
4329977a 1034 }
625f5260 1035 }
f881dc35 1036
625f5260 1037 // Get row and col of unsmeared electron to retrieve drift velocity
1038 // The pad row (z-direction)
1039 Int_t rowE = padPlane->GetPadRowNumberROC(loc[1]);
1040 if (rowE < 0) {
1041 continue;
1042 }
1043 Double_t rowOffset = padPlane->GetPadRowOffsetROC(rowE,loc[1]);
1044 // The pad column (rphi-direction)
1045 Double_t offsetTilt = padPlane->GetTiltOffset(rowOffset);
1046 Int_t colE = padPlane->GetPadColNumber(loc[0]+offsetTilt);
1047 if (colE < 0) {
1048 continue;
1049 }
0a17cc30 1050 Double_t colOffset = 0.0;
f881dc35 1051
625f5260 1052 // Normalized drift length
1053 Float_t driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1054 Double_t absdriftlength = TMath::Abs(driftlength);
1055 if (commonParam->ExBOn()) {
1056 absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
1057 }
1058
1059 // Loop over all electrons of this hit
1060 // TR photons produce hits with negative charge
1061 Int_t nEl = ((Int_t) TMath::Abs(q));
1062 for (Int_t iEl = 0; iEl < nEl; iEl++) {
1063
1064 // Now the real local coordinate system of the ROC
1065 // column direction: locC
1066 // row direction: locR
1067 // time direction: locT
1068 // locR and locC are identical to the coordinates of the corresponding
1069 // volumina of the drift or amplification region.
1070 // locT is defined relative to the wire plane (i.e. middle of amplification
26d3c914 1071 // region), meaning locT = 0, and is negative for hits coming from the
625f5260 1072 // drift region.
1073 Double_t locC = loc[0];
1074 Double_t locR = loc[1];
1075 Double_t locT = loc[2];
1076
1077 // Electron attachment
1078 if (simParam->ElAttachOn()) {
1079 if (gRandom->Rndm() < (absdriftlength * elAttachProp)) {
1080 continue;
f881dc35 1081 }
625f5260 1082 }
1083
1084 // Apply the diffusion smearing
1085 if (simParam->DiffusionOn()) {
1086 if (!(Diffusion(driftvelocity,absdriftlength,locR,locC,locT))) {
1087 continue;
f881dc35 1088 }
f881dc35 1089 }
793ff80c 1090
625f5260 1091 // Apply E x B effects (depends on drift direction)
1092 if (commonParam->ExBOn()) {
1093 if (!(ExB(driftvelocity,driftlength,locC))) {
4329977a 1094 continue;
1095 }
729161c5 1096 }
1097
625f5260 1098 // The electron position after diffusion and ExB in pad coordinates.
4329977a 1099 // The pad row (z-direction)
625f5260 1100 rowE = padPlane->GetPadRowNumberROC(locR);
1101 if (rowE < 0) continue;
1102 rowOffset = padPlane->GetPadRowOffsetROC(rowE,locR);
4329977a 1103
1104 // The pad column (rphi-direction)
625f5260 1105 offsetTilt = padPlane->GetTiltOffset(rowOffset);
1106 colE = padPlane->GetPadColNumber(locC+offsetTilt);
1107 if (colE < 0) continue;
1108 colOffset = padPlane->GetPadColOffset(colE,locC+offsetTilt);
b65e5048 1109
625f5260 1110 // Also re-retrieve drift velocity because col and row may have changed
1111 driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1112 Float_t t0 = calT0DetValue + calT0ROC->GetValue(colE,rowE);
1113
1114 // Convert the position to drift time [mus], using either constant drift velocity or
1115 // time structure of drift cells (non-isochronity, GARFIELD calculation).
1116 // Also add absolute time of hits to take pile-up events into account properly
1117 Double_t drifttime;
1118 if (simParam->TimeStructOn()) {
1119 // Get z-position with respect to anode wire
1120 Double_t zz = row0 - locR + simParam->GetAnodeWireOffset();
1121 zz -= ((Int_t)(2 * zz)) / 2.0;
1122 if (zz > 0.25) {
1123 zz = 0.5 - zz;
1124 }
1125 // Use drift time map (GARFIELD)
1126 drifttime = TimeStruct(driftvelocity,0.5*kAmWidth-1.0*locT,zz)
1127 + hittime;
1128 }
1129 else {
1130 // Use constant drift velocity
26d3c914 1131 drifttime = TMath::Abs(locT) / driftvelocity
625f5260 1132 + hittime;
4329977a 1133 }
625f5260 1134
1135 // Apply the gas gain including fluctuations
1136 Double_t ggRndm = 0.0;
1137 do {
1138 ggRndm = gRandom->Rndm();
1139 } while (ggRndm <= 0);
eb52b657 1140 Double_t signal = -(simParam->GetGasGain()) * TMath::Log(ggRndm);
625f5260 1141
1142 // Apply the pad response
1143 if (simParam->PRFOn()) {
1144 // The distance of the electron to the center of the pad
1145 // in units of pad width
1146 Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
1147 / padPlane->GetColSize(colE);
1148 // This is a fixed parametrization, i.e. not dependent on
1149 // calibration values !
053767a4 1150 if (!(calibration->PadResponse(signal,dist,layer,padSignal))) continue;
625f5260 1151 }
1152 else {
1153 padSignal[0] = 0.0;
1154 padSignal[1] = signal;
1155 padSignal[2] = 0.0;
4329977a 1156 }
f881dc35 1157
625f5260 1158 // The time bin (always positive), with t0 distortion
1159 Double_t timeBinIdeal = drifttime * samplingRate + t0;
1160 // Protection
1161 if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
1162 timeBinIdeal = 2 * nTimeTotal;
1163 }
1164 Int_t timeBinTruncated = ((Int_t) timeBinIdeal);
1165 // The distance of the position to the middle of the timebin
1166 Double_t timeOffset = ((Float_t) timeBinTruncated
1167 + 0.5 - timeBinIdeal) / samplingRate;
3551db50 1168
625f5260 1169 // Sample the time response inside the drift region
1170 // + additional time bins before and after.
1171 // The sampling is done always in the middle of the time bin
1172 for (Int_t iTimeBin = TMath::Max(timeBinTruncated,0)
1173 ;iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal)
1174 ;iTimeBin++) {
1175
1176 // Apply the time response
1177 Double_t timeResponse = 1.0;
1178 Double_t crossTalk = 0.0;
1179 Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
1180 if (simParam->TRFOn()) {
1181 timeResponse = simParam->TimeResponse(time);
f881dc35 1182 }
625f5260 1183 if (simParam->CTOn()) {
1184 crossTalk = simParam->CrossTalk(time);
f881dc35 1185 }
e23fbb27 1186
625f5260 1187 signalOld[0] = 0.0;
1188 signalOld[1] = 0.0;
1189 signalOld[2] = 0.0;
e23fbb27 1190
625f5260 1191 for (iPad = 0; iPad < kNpad; iPad++) {
f7336fa3 1192
625f5260 1193 Int_t colPos = colE + iPad - 1;
1194 if (colPos < 0) continue;
1195 if (colPos >= nColMax) break;
e23fbb27 1196
625f5260 1197 // Add the signals
b65e5048 1198 signalOld[iPad] = signals->GetData(rowE,colPos,iTimeBin);
e23fbb27 1199
625f5260 1200 if (colPos != colE) {
1201 // Cross talk added to non-central pads
1202 signalOld[iPad] += padSignal[iPad]
1203 * (timeResponse + crossTalk);
1204 }
1205 else {
1206 // W/o cross talk at central pad
1207 signalOld[iPad] += padSignal[iPad]
1208 * timeResponse;
1209 }
f881dc35 1210
b65e5048 1211 signals->SetData(rowE,colPos,iTimeBin,signalOld[iPad]);
625f5260 1212
1213 // Store the track index in the dictionary
1214 // Note: We store index+1 in order to allow the array to be compressed
b65e5048 1215 // Note2: Taking out the +1 in track
625f5260 1216 if (signalOld[iPad] > 0.0) {
1217 for (dict = 0; dict < kNdict; dict++) {
b65e5048 1218 Int_t oldTrack = dictionary[dict]->GetData(rowE,colPos,iTimeBin);
1219 if (oldTrack == track) break;
1220 if (oldTrack == -1 ) {
1221 dictionary[dict]->SetData(rowE,colPos,iTimeBin,track);
1222 break;
1223 }
f881dc35 1224 }
625f5260 1225 }
872a7aba 1226
625f5260 1227 } // Loop: pads
f7336fa3 1228
625f5260 1229 } // Loop: time bins
f7336fa3 1230
625f5260 1231 } // Loop: electrons of a single hit
f7336fa3 1232
625f5260 1233 } // Loop: hits
f7336fa3 1234
625f5260 1235 AliDebug(2,Form("Finished analyzing %d hits",nhit));
e23fbb27 1236
625f5260 1237 return kTRUE;
e23fbb27 1238
625f5260 1239}
793ff80c 1240
625f5260 1241//_____________________________________________________________________________
b65e5048 1242Bool_t AliTRDdigitizer::ConvertSignals(Int_t det, AliTRDarraySignal *signals)
625f5260 1243{
4329977a 1244 //
625f5260 1245 // Convert signals to digits
4329977a 1246 //
1247
625f5260 1248 AliDebug(1,Form("Start converting the signals for detector %d",det));
1249
1250 if (fSDigits) {
1251 // Convert the signal array to s-digits
1252 if (!Signal2SDigits(det,signals)) {
1253 return kFALSE;
793ff80c 1254 }
625f5260 1255 }
1256 else {
1257 // Convert the signal array to digits
1258 if (!Signal2ADC(det,signals)) {
1259 return kFALSE;
793ff80c 1260 }
625f5260 1261 }
f7336fa3 1262
625f5260 1263 // Compress the arrays
b65e5048 1264 CompressOutputArrays(det);
6244debe 1265
625f5260 1266 return kTRUE;
6244debe 1267
625f5260 1268}
4329977a 1269
625f5260 1270//_____________________________________________________________________________
b65e5048 1271Bool_t AliTRDdigitizer::Signal2ADC(Int_t det, AliTRDarraySignal *signals)
625f5260 1272{
1273 //
1274 // Converts the sampled electron signals to ADC values for a given chamber
1275 //
6244debe 1276
625f5260 1277 AliDebug(1,Form("Start converting signals to ADC values for detector=%d",det));
e23fbb27 1278
625f5260 1279 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1280 if (!calibration) {
1281 AliFatal("Could not get calibration object");
1282 return kFALSE;
1283 }
793ff80c 1284
625f5260 1285 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
1286 if (!simParam) {
1287 AliFatal("Could not get simulation parameters");
1288 return kFALSE;
1289 }
f7336fa3 1290
625f5260 1291 // Converts number of electrons to fC
1292 const Double_t kEl2fC = 1.602e-19 * 1.0e15;
0c24ba98 1293
625f5260 1294 // Coupling factor
1295 Double_t coupling = simParam->GetPadCoupling()
1296 * simParam->GetTimeCoupling();
1297 // Electronics conversion factor
1298 Double_t convert = kEl2fC
1299 * simParam->GetChipGain();
1300 // ADC conversion factor
1301 Double_t adcConvert = simParam->GetADCoutRange()
1302 / simParam->GetADCinRange();
1303 // The electronics baseline in mV
1304 Double_t baseline = simParam->GetADCbaseline()
1305 / adcConvert;
1306 // The electronics baseline in electrons
1307 Double_t baselineEl = baseline
1308 / convert;
1309
1310 Int_t row = 0;
1311 Int_t col = 0;
1312 Int_t time = 0;
1313
1314 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1315 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1316 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
abaf1f1d 1317
625f5260 1318 // The gainfactor calibration objects
1319 const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
1320 AliTRDCalROC *calGainFactorROC = 0;
1321 Float_t calGainFactorDetValue = 0.0;
f7336fa3 1322
b65e5048 1323 AliTRDarrayADC *digits = 0x0;
e23fbb27 1324
625f5260 1325 if (!signals) {
1326 AliError(Form("Signals array for detector %d does not exist\n",det));
1327 return kFALSE;
1328 }
1329 if (signals->HasData()) {
1330 // Expand the container if neccessary
b65e5048 1331 signals->Expand();
625f5260 1332 }
1333 else {
1334 // Create missing containers
1335 signals->Allocate(nRowMax,nColMax,nTimeTotal);
f7336fa3 1336 }
1337
625f5260 1338 // Get the container for the digits of this detector
1339 if (fDigitsManager->HasSDigits()) {
1340 AliError("Digits manager has s-digits");
1341 return kFALSE;
1342 }
b65e5048 1343
1344 digits = (AliTRDarrayADC *) fDigitsManager->GetDigits(det);
625f5260 1345 // Allocate memory space for the digits buffer
1346 if (!digits->HasData()) {
1347 digits->Allocate(nRowMax,nColMax,nTimeTotal);
0c24ba98 1348 }
1349
625f5260 1350 // Get the calibration objects
1351 calGainFactorROC = calibration->GetGainFactorROC(det);
1352 calGainFactorDetValue = calGainFactorDet->GetValue(det);
abaf1f1d 1353
625f5260 1354 // Create the digits for this chamber
1355 for (row = 0; row < nRowMax; row++ ) {
1356 for (col = 0; col < nColMax; col++ ) {
abaf1f1d 1357
625f5260 1358 // Check whether pad is masked
1359 // Bridged pads are not considered yet!!!
1360 if (calibration->IsPadMasked(det,col,row)) {
1361 continue;
1362 }
abaf1f1d 1363
625f5260 1364 // The gain factors
1365 Float_t padgain = calGainFactorDetValue
1366 * calGainFactorROC->GetValue(col,row);
1367 if (padgain <= 0) {
1368 AliError(Form("Not a valid gain %f, %d %d %d",padgain,det,col,row));
1369 }
abaf1f1d 1370
625f5260 1371 for (time = 0; time < nTimeTotal; time++) {
1372
1373 // Get the signal amplitude
b65e5048 1374 Float_t signalAmp = signals->GetData(row,col,time);
625f5260 1375 // Pad and time coupling
1376 signalAmp *= coupling;
1377 // Gain factors
1378 signalAmp *= padgain;
1379
1380 // Add the noise, starting from minus ADC baseline in electrons
1381 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
1382 ,-baselineEl);
1383
1384 // Convert to mV
1385 signalAmp *= convert;
1386 // Add ADC baseline in mV
1387 signalAmp += baseline;
1388
1389 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
1390 // signal is larger than fADCinRange
1391 Short_t adc = 0;
1392 if (signalAmp >= simParam->GetADCinRange()) {
1393 adc = ((Short_t) simParam->GetADCoutRange());
1394 }
1395 else {
1396 adc = TMath::Nint(signalAmp * adcConvert);
1397 }
abaf1f1d 1398
b65e5048 1399 // Saving all digits
1400 digits->SetData(row,col,time,adc);
abaf1f1d 1401
625f5260 1402 } // for: time
b65e5048 1403
625f5260 1404 } // for: col
1405 } // for: row
b1113c6b 1406
b65e5048 1407 // Do the Zero Suppression
1408 ZS(digits);
1409
625f5260 1410 return kTRUE;
b1113c6b 1411
1412}
1413
abaf1f1d 1414//_____________________________________________________________________________
b65e5048 1415Bool_t AliTRDdigitizer::Signal2SDigits(Int_t det, AliTRDarraySignal *signals)
abaf1f1d 1416{
1417 //
625f5260 1418 // Converts the sampled electron signals to s-digits
abaf1f1d 1419 //
1420
625f5260 1421 AliDebug(1,Form("Start converting signals to s-digits for detector=%d",det));
abaf1f1d 1422
4329977a 1423 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1424 if (!calibration) {
4329977a 1425 AliFatal("Could not get calibration object");
3551db50 1426 return kFALSE;
1427 }
6bf5f0ce 1428
625f5260 1429 Int_t row = 0;
1430 Int_t col = 0;
1431 Int_t time = 0;
9afbd7de 1432
625f5260 1433 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1434 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1435 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
e23fbb27 1436
625f5260 1437 // Get the container for the digits of this detector
b65e5048 1438
625f5260 1439 if (!fDigitsManager->HasSDigits()) {
1440 AliError("Digits manager has no s-digits");
1441 return kFALSE;
1442 }
b65e5048 1443
1444 AliTRDarraySignal *digits = (AliTRDarraySignal *) fDigitsManager->GetSDigits(det);
625f5260 1445 // Allocate memory space for the digits buffer
1446 if (!digits->HasData()) {
1447 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1448 }
e23fbb27 1449
625f5260 1450 // Create the sdigits for this chamber
1451 for (row = 0; row < nRowMax; row++ ) {
1452 for (col = 0; col < nColMax; col++ ) {
1453 for (time = 0; time < nTimeTotal; time++) {
b65e5048 1454 digits->SetData(row,col,time,signals->GetData(row,col,time));
625f5260 1455 } // for: time
1456 } // for: col
1457 } // for: row
b65e5048 1458
625f5260 1459 return kTRUE;
abaf1f1d 1460
625f5260 1461}
abaf1f1d 1462
625f5260 1463//_____________________________________________________________________________
1464Bool_t AliTRDdigitizer::SDigits2Digits()
1465{
1466 //
1467 // Merges the input s-digits and converts them to normal digits
1468 //
e23fbb27 1469
625f5260 1470 if (!MergeSDigits()) {
1471 return kFALSE;
1472 }
f7336fa3 1473
625f5260 1474 return ConvertSDigits();
f7336fa3 1475
1476}
1477
16bf9884 1478//_____________________________________________________________________________
abaf1f1d 1479Bool_t AliTRDdigitizer::MergeSDigits()
16bf9884 1480{
1481 //
abaf1f1d 1482 // Merges the input s-digits:
1483 // - The amplitude of the different inputs are summed up.
1484 // - Of the track IDs from the input dictionaries only one is
1485 // kept for each input. This works for maximal 3 different merged inputs.
16bf9884 1486 //
1487
abaf1f1d 1488 // Number of track dictionary arrays
1489 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1490
4d18a639 1491 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 1492 if (!simParam) {
4329977a 1493 AliFatal("Could not get simulation parameters");
3551db50 1494 return kFALSE;
1495 }
1496
4d18a639 1497 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1498 if (!calibration) {
4329977a 1499 AliFatal("Could not get calibration object");
3551db50 1500 return kFALSE;
1501 }
1502
abaf1f1d 1503 Int_t iDict = 0;
e23fbb27 1504 Int_t jDict = 0;
abaf1f1d 1505
b65e5048 1506 AliTRDarraySignal *digitsA;
1507 AliTRDarraySignal *digitsB;
1508 AliTRDarrayDictionary *dictionaryA[kNDict];
1509 AliTRDarrayDictionary *dictionaryB[kNDict];
abaf1f1d 1510
b65e5048 1511 AliTRDdigitsManager *mergeSDigitsManager = 0x0;
abaf1f1d 1512 // Get the first s-digits
1513 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
9afbd7de 1514 if (!fSDigitsManager) {
7925de54 1515 AliError("No SDigits manager");
9afbd7de 1516 return kFALSE;
1517 }
abaf1f1d 1518
1519 // Loop through the other sets of s-digits
b65e5048 1520 mergeSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->After(fSDigitsManager);
abaf1f1d 1521
9afbd7de 1522 if (mergeSDigitsManager) {
7925de54 1523 AliDebug(1,Form("Merge %d input files.",fSDigitsManagerList->GetSize()));
9afbd7de 1524 }
1525 else {
7925de54 1526 AliDebug(1,"Only one input file.");
abaf1f1d 1527 }
3551db50 1528
b65e5048 1529 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
abaf1f1d 1530 Int_t iMerge = 0;
b65e5048 1531
abaf1f1d 1532 while (mergeSDigitsManager) {
1533
1534 iMerge++;
b65e5048 1535
abaf1f1d 1536 // Loop through the detectors
1537 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1538
625f5260 1539 Int_t nRowMax = fGeo->GetPadPlane(iDet)->GetNrows();
1540 Int_t nColMax = fGeo->GetPadPlane(iDet)->GetNcols();
b65e5048 1541
abaf1f1d 1542 // Loop through the pixels of one detector and add the signals
b65e5048 1543 digitsA = (AliTRDarraySignal *) fSDigitsManager->GetSDigits(iDet);
1544 digitsB = (AliTRDarraySignal *) mergeSDigitsManager->GetSDigits(iDet);
1545 digitsA->Expand();
1546 if (!digitsA->HasData()) continue;
1547 digitsB->Expand();
1548 if (!digitsB->HasData()) continue;
1549
abaf1f1d 1550 for (iDict = 0; iDict < kNDict; iDict++) {
b65e5048 1551 dictionaryA[iDict] = (AliTRDarrayDictionary *) fSDigitsManager->GetDictionary(iDet,iDict);
1552 dictionaryB[iDict] = (AliTRDarrayDictionary *) mergeSDigitsManager->GetDictionary(iDet,iDict);
1553 dictionaryA[iDict]->Expand();
abaf1f1d 1554 dictionaryB[iDict]->Expand();
1555 }
1556
4487dad0 1557 // Merge only detectors that contain a signal
1558 Bool_t doMerge = kTRUE;
1559 if (fMergeSignalOnly) {
b65e5048 1560 if (digitsA->GetOverThreshold(0) == 0) {
1561 doMerge = kFALSE;
4487dad0 1562 }
abaf1f1d 1563 }
b65e5048 1564
4487dad0 1565 if (doMerge) {
b65e5048 1566
1567 AliDebug(1,Form("Merge detector %d of input no.%d",iDet,iMerge+1));
1568
1569 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1570 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1571 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1572
4487dad0 1573 // Add the amplitudes of the summable digits
b65e5048 1574 Float_t ampA = digitsA->GetData(iRow,iCol,iTime);
1575 Float_t ampB = digitsB->GetData(iRow,iCol,iTime);
1576 ampA += ampB;
1577 digitsA->SetData(iRow,iCol,iTime,ampA);
1578
1579 // Add the mask to the track id if defined.
1580 for (iDict = 0; iDict < kNDict; iDict++) {
1581 Int_t trackB = dictionaryB[iDict]->GetData(iRow,iCol,iTime);
1582 if ((fMasks) && (trackB > 0)) {
1583 for (jDict = 0; jDict < kNDict; jDict++) {
1584 Int_t trackA = dictionaryA[iDict]->GetData(iRow,iCol,iTime);
1585 if (trackA == 0) {
1586 trackA = trackB + fMasks[iMerge];
1587 dictionaryA[iDict]->SetData(iRow,iCol,iTime,trackA);
625f5260 1588 } // if: track A == 0
b65e5048 1589 } // for: jDict
1590 } // if: fMasks and trackB > 0
625f5260 1591 } // for: iDict
abaf1f1d 1592
625f5260 1593 } // for: iTime
1594 } // for: iCol
1595 } // for: iRow
4487dad0 1596
625f5260 1597 } // if: doMerge
1598
1599 mergeSDigitsManager->RemoveDigits(iDet);
1600 mergeSDigitsManager->RemoveDictionaries(iDet);
b65e5048 1601
abaf1f1d 1602 if (fCompress) {
b65e5048 1603 digitsA->Compress(0);
1604 for (iDict = 0; iDict < kNDict; iDict++) {
1605 dictionaryA[iDict]->Compress();
abaf1f1d 1606 }
1607 }
b65e5048 1608
625f5260 1609 } // for: detectors
b65e5048 1610
abaf1f1d 1611 // The next set of s-digits
b65e5048 1612 mergeSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->After(mergeSDigitsManager);
1613
625f5260 1614 } // while: mergeDigitsManagers
b65e5048 1615
625f5260 1616 return kTRUE;
1617
1618}
1619
1620//_____________________________________________________________________________
1621Bool_t AliTRDdigitizer::ConvertSDigits()
1622{
1623 //
1624 // Converts s-digits to normal digits
1625 //
1626
b65e5048 1627 AliTRDarraySignal *digitsIn = 0x0;
625f5260 1628
1629 if (!fSDigitsManager->HasSDigits()) {
1630 AliError("No s-digits in digits manager");
1631 return kFALSE;
abaf1f1d 1632 }
1633
625f5260 1634 // Loop through the detectors
1635 for (Int_t det = 0; det < AliTRDgeometry::Ndet(); det++) {
1636
1637 // Get the merged s-digits (signals)
b65e5048 1638 digitsIn = (AliTRDarraySignal *) fSDigitsManager->GetSDigits(det);
625f5260 1639 if (!digitsIn->HasData()) {
1640 AliDebug(2,Form("No digits for det=%d",det));
1641 continue;
1642 }
1643
1644 // Convert the merged sdigits to digits
1645 if (!Signal2ADC(det,digitsIn)) {
1646 continue;
1647 }
1648
1649 // Copy the dictionary information to the output array
1650 if (!CopyDictionary(det)) {
1651 continue;
1652 }
1653
1654 // Delete
1655 fSDigitsManager->RemoveDigits(det);
1656 fSDigitsManager->RemoveDictionaries(det);
1657
1658 // Compress the arrays
1659 CompressOutputArrays(det);
1660
1661 } // for: detector numbers
1662
16bf9884 1663 return kTRUE;
1664
1665}
1666
abaf1f1d 1667//_____________________________________________________________________________
625f5260 1668Bool_t AliTRDdigitizer::CopyDictionary(Int_t det)
abaf1f1d 1669{
1670 //
625f5260 1671 // Copies the dictionary information from the s-digits arrays
1672 // to the output arrays
abaf1f1d 1673 //
1674
625f5260 1675 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1676 if (!calibration) {
1677 AliFatal("Could not get calibration object");
4d18a639 1678 return kFALSE;
1679 }
abaf1f1d 1680
625f5260 1681 AliDebug(1,Form("Start copying dictionaries for detector=%d",det));
1682
1683 const Int_t kNDict = AliTRDdigitsManager::kNDict;
b65e5048 1684 AliTRDarrayDictionary *dictionaryIn[kNDict];
1685 AliTRDarrayDictionary *dictionaryOut[kNDict];
625f5260 1686
1687 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1688 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1689 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1690
1691 Int_t row = 0;
1692 Int_t col = 0;
1693 Int_t time = 0;
1694 Int_t dict = 0;
1695
1696 for (dict = 0; dict < kNDict; dict++) {
1697
b65e5048 1698 dictionaryIn[dict] = (AliTRDarrayDictionary *) fSDigitsManager->GetDictionary(det,dict);
625f5260 1699 dictionaryIn[dict]->Expand();
b65e5048 1700 dictionaryOut[dict] = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
625f5260 1701 dictionaryOut[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
1702
1703 for (row = 0; row < nRowMax; row++) {
1704 for (col = 0; col < nColMax; col++) {
1705 for (time = 0; time < nTimeTotal; time++) {
b65e5048 1706 Int_t track = dictionaryIn[dict]->GetData(row,col,time);
1707 dictionaryOut[dict]->SetData(row,col,time,track);
625f5260 1708 } // for: time
1709 } // for: col
1710 } // for: row
b65e5048 1711
625f5260 1712 } // for: dictionaries
b65e5048 1713
625f5260 1714 return kTRUE;
1715
1716}
1717
1718//_____________________________________________________________________________
1719void AliTRDdigitizer::CompressOutputArrays(Int_t det)
1720{
1721 //
1722 // Compress the output arrays
1723 //
1724
1725 const Int_t kNDict = AliTRDdigitsManager::kNDict;
b65e5048 1726 AliTRDarrayDictionary *dictionary = 0x0;
625f5260 1727
1728 if (fCompress) {
1729
b65e5048 1730 if (!fSDigits) {
1731 AliTRDarrayADC *digits = 0x0;
1732 digits = (AliTRDarrayADC *) fDigitsManager->GetDigits(det);
1733 digits->Compress();
1734 }
1735
1736 if (fSDigits) {
1737 AliTRDarraySignal *digits = 0x0;
1738 digits = (AliTRDarraySignal *) fDigitsManager->GetSDigits(det);
1739 digits->Compress(0);
1740 }
1741
625f5260 1742 for (Int_t dict = 0; dict < kNDict; dict++) {
b65e5048 1743 dictionary = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
1744 dictionary->Compress();
625f5260 1745 }
1746
1747 }
abaf1f1d 1748
1749}
1750
f7336fa3 1751//_____________________________________________________________________________
0a29d0f1 1752Bool_t AliTRDdigitizer::WriteDigits() const
f7336fa3 1753{
1754 //
1755 // Writes out the TRD-digits and the dictionaries
1756 //
1757
4d18a639 1758 // Write parameters
bdbb05bb 1759 fRunLoader->CdGAFile();
bdbb05bb 1760
da581aea 1761 // Store the digits and the dictionary in the tree
abaf1f1d 1762 return fDigitsManager->WriteDigits();
f7336fa3 1763
1764}
793ff80c 1765
8e64dd77 1766//_____________________________________________________________________________
88cb7938 1767void AliTRDdigitizer::InitOutput(Int_t iEvent)
8e64dd77 1768{
1769 //
1770 // Initializes the output branches
1771 //
1772
1773 fEvent = iEvent;
88cb7938 1774
9afbd7de 1775 if (!fRunLoader) {
1776 AliError("Run Loader is NULL");
1777 return;
1778 }
1779
4329977a 1780 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 1781 if (!loader) {
1782 AliError("Can not get TRD loader from Run Loader");
1783 return;
1784 }
88cb7938 1785
4d18a639 1786 TTree *tree = 0;
88cb7938 1787
9afbd7de 1788 if (fSDigits) {
1789 // If we produce SDigits
88cb7938 1790 tree = loader->TreeS();
9afbd7de 1791 if (!tree) {
88cb7938 1792 loader->MakeTree("S");
1793 tree = loader->TreeS();
9afbd7de 1794 }
1795 }
1796 else {
1797 // If we produce Digits
1798 tree = loader->TreeD();
1799 if (!tree) {
1800 loader->MakeTree("D");
1801 tree = loader->TreeD();
1802 }
1803 }
88cb7938 1804 fDigitsManager->SetEvent(iEvent);
1805 fDigitsManager->MakeBranch(tree);
8e64dd77 1806
1807}
3551db50 1808
1809//_____________________________________________________________________________
1810Double_t AliTRDdigitizer::TimeStruct(Float_t vdrift, Double_t dist, Double_t z)
1811{
1812 //
1813 // Applies the time structure of the drift cells (by C.Lippmann).
1814 // The drift time of electrons to the anode wires depends on the
1815 // distance to the wire (z) and on the position in the drift region.
1816 //
1817 // input :
1818 // dist = radial distance from (cathode) pad plane [cm]
1819 // z = distance from anode wire (parallel to cathode planes) [cm]
1820 //
1821 // output :
1822 // tdrift = the drift time of an electron at the given position
1823 //
1824 // We interpolate between the drift time values at the two drift
1825 // velocities fVDlo and fVDhi, being smaller and larger than
1826 // fDriftVelocity. We use the two stored drift time maps fTimeStruct1
1827 // and fTimeStruct2, calculated for the two mentioned drift velocities.
1828 //
1829
1830 SampleTimeStruct(vdrift);
1831
4d18a639 1832 // Indices:
1833 Int_t r1 = (Int_t)(10 * dist);
9afbd7de 1834 if (r1 < 0) r1 = 0;
1835 if (r1 > 37) r1 = 37;
1836 Int_t r2 = r1 + 1;
1837 if (r2 < 0) r2 = 0;
1838 if (r2 > 37) r2 = 37;
1839 const Int_t kz1 = ((Int_t)(100 * z / 2.5));
1840 const Int_t kz2 = kz1 + 1;
1841
4d18a639 1842 if ((r1 < 0) ||
1843 (r1 > 37) ||
1844 (kz1 < 0) ||
1845 (kz1 > 10)) {
7925de54 1846 AliWarning(Form("Indices out of range: dist=%.2f, z=%.2f, r1=%d, kz1=%d"
9afbd7de 1847 ,dist,z,r1,kz1));
3551db50 1848 }
1849
4d18a639 1850 const Float_t ky111 = fTimeStruct1[r1+38*kz1];
9afbd7de 1851 const Float_t ky221 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1852 ? fTimeStruct1[r2+38*kz2]
1853 : fTimeStruct1[37+38*10];
9afbd7de 1854 const Float_t ky121 = (kz2 <= 10)
4d18a639 1855 ? fTimeStruct1[r1+38*kz2]
1856 : fTimeStruct1[r1+38*10];
9afbd7de 1857 const Float_t ky211 = (r2 <= 37)
4d18a639 1858 ? fTimeStruct1[r2+38*kz1]
1859 : fTimeStruct1[37+38*kz1];
3551db50 1860
4d18a639 1861 const Float_t ky112 = fTimeStruct2[r1+38*kz1];
9afbd7de 1862 const Float_t ky222 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1863 ? fTimeStruct2[r2+38*kz2]
1864 : fTimeStruct2[37+38*10];
9afbd7de 1865 const Float_t ky122 = (kz2 <= 10)
4d18a639 1866 ? fTimeStruct2[r1+38*kz2]
1867 : fTimeStruct2[r1+38*10];
9afbd7de 1868 const Float_t ky212 = (r2 <= 37)
4d18a639 1869 ? fTimeStruct2[r2+38*kz1]
1870 : fTimeStruct2[37+38*kz1];
3551db50 1871
26d3c914 1872 // Interpolation in dist-directions, lower drift time map
1873 const Float_t ky11 = (ky211-ky111)*10*dist + ky111 - (ky211-ky111)*r1;
1874 const Float_t ky21 = (ky221-ky121)*10*dist + ky121 - (ky221-ky121)*r1;
1875
1876 // Interpolation in dist-direction, larger drift time map
3551db50 1877 const Float_t ky12 = (ky212-ky112)*10*dist + ky112 - (ky212-ky112)*r1;
1878 const Float_t ky22 = (ky222-ky122)*10*dist + ky122 - (ky222-ky122)*r1;
1879
4d18a639 1880 // Dist now is the drift distance to the anode wires (negative if electrons are
3551db50 1881 // between anode wire plane and cathode pad plane)
9afbd7de 1882 dist -= AliTRDgeometry::AmThick() / 2.0;
3551db50 1883
26d3c914 1884 // Interpolation in z-directions, lower drift time map
9afbd7de 1885 const Float_t ktdrift1 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1886 ? (ky21 - ky11) * 100 * z / 2.5 + ky11 - (ky21 - ky11) * kz1
1887 : 0.0;
26d3c914 1888 // Interpolation in z-directions, larger drift time map
9afbd7de 1889 const Float_t ktdrift2 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1890 ? (ky22 - ky12) * 100 * z / 2.5 + ky12 - (ky22 - ky12) * kz1
1891 : 0.0;
3551db50 1892
26d3c914 1893 // Interpolation between the values at fVDlo and fVDhi
1894 Float_t a = (ktdrift2 - ktdrift1) / (fVDhi - fVDlo);
4d18a639 1895 Float_t b = ktdrift2 - a * fVDhi;
26d3c914 1896 Float_t t = a * vdrift + b;
3551db50 1897
26d3c914 1898 return t;
3551db50 1899
1900}
1901
1902//_____________________________________________________________________________
1903void AliTRDdigitizer::SampleTimeStruct(Float_t vdrift)
1904{
1905 //
1906 // Samples the timing structure of a drift cell
1907 // Drift Time data calculated with Garfield (by C.Lippmann)
1908 //
1909
4329977a 1910 // Nothing to do
4d18a639 1911 if (vdrift == fTimeLastVdrift) {
3551db50 1912 return;
9afbd7de 1913 }
4d18a639 1914 fTimeLastVdrift = vdrift;
3551db50 1915
9afbd7de 1916 // Drift time maps are saved for some drift velocity values (in drift region):
3551db50 1917 Float_t fVDsmp[8];
1918 fVDsmp[0] = 1.032;
1919 fVDsmp[1] = 1.158;
1920 fVDsmp[2] = 1.299;
1921 fVDsmp[3] = 1.450;
1922 fVDsmp[4] = 1.610;
1923 fVDsmp[5] = 1.783;
1924 fVDsmp[6] = 1.959;
1925 fVDsmp[7] = 2.134;
1926
9afbd7de 1927 if (vdrift < fVDsmp[0]) {
7925de54 1928 AliWarning(Form("Drift Velocity too small (%.3f<%.3f)",vdrift,fVDsmp[0]));
3551db50 1929 vdrift = fVDsmp[0];
9afbd7de 1930 }
1931 else if (vdrift > fVDsmp[7]) {
7925de54 1932 AliWarning(Form("Drift Velocity too large (%.3f>%.3f)",vdrift,fVDsmp[6]));
3551db50 1933 vdrift = fVDsmp[7];
1934 }
1935
1936 const Int_t ktimebin = 38;
9afbd7de 1937 const Int_t kZbin = 11;
3551db50 1938
1939 // Garfield simulation at UD = -1500V; vd = 1.032cm/microsec, <driftfield> = 525V/cm
1940 Float_t time1500[ktimebin][kZbin] =
1941 {{0.09170, 0.09205, 0.09306, 0.09475, 0.09716, 0.10035,
1942 0.10445, 0.10993, 0.11838, 0.13986, 0.37858},
1943 {0.06588, 0.06626, 0.06739, 0.06926, 0.07186, 0.07524,
1944 0.07951, 0.08515, 0.09381, 0.11601, 0.35673},
1945 {0.03946, 0.04003, 0.04171, 0.04435, 0.04780, 0.05193,
1946 0.05680, 0.06306, 0.07290, 0.09873, 0.34748},
1947 {0.01151, 0.01283, 0.01718, 0.02282, 0.02880, 0.03479,
1948 0.04098, 0.04910, 0.06413, 0.10567, 0.36897},
1949 {0.01116, 0.01290, 0.01721, 0.02299, 0.02863, 0.03447,
1950 0.04074, 0.04984, 0.06839, 0.11625, 0.37277},
1951 {0.03919, 0.03974, 0.04131, 0.04380, 0.04703, 0.05102,
1952 0.05602, 0.06309, 0.07651, 0.10938, 0.36838},
1953 {0.06493, 0.06560, 0.06640, 0.06802, 0.07051, 0.07392,
1954 0.07853, 0.08510, 0.09690, 0.12621, 0.38058},
1955 {0.09174, 0.09186, 0.09225, 0.09303, 0.09477, 0.00000,
1956 0.11205, 0.11952, 0.13461, 0.16984, 0.43017},
1957 {0.14356, 0.14494, 0.14959, 0.16002, 0.18328, 0.27981,
1958 0.22785, 0.21240, 0.21948, 0.25965, 0.52392},
1959 {0.23120, 0.23366, 0.24046, 0.25422, 0.28071, 0.36914,
1960 0.32999, 0.31208, 0.31772, 0.35804, 0.62249},
1961 {0.32686, 0.32916, 0.33646, 0.35053, 0.37710, 0.46292,
1962 0.42773, 0.40948, 0.41497, 0.45527, 0.71955},
1963 {0.42353, 0.42583, 0.43317, 0.44727, 0.47380, 0.55884,
1964 0.52479, 0.50650, 0.51194, 0.55225, 0.81658},
1965 {0.52038, 0.52271, 0.53000, 0.54415, 0.57064, 0.65545,
1966 0.62172, 0.60341, 0.60885, 0.64915, 0.91339},
1967 {0.61724, 0.61953, 0.62694, 0.64098, 0.66756, 0.75226,
1968 0.71862, 0.70030, 0.70575, 0.74604, 1.01035},
1969 {0.71460, 0.71678, 0.72376, 0.73786, 0.76447, 0.84913,
1970 0.81551, 0.79720, 0.80264, 0.84292, 1.10723},
1971 {0.81101, 0.81334, 0.82066, 0.83475, 0.86127, 0.94599,
1972 0.91240, 0.89408, 0.89952, 0.93981, 1.20409},
1973 {0.90788, 0.91023, 0.91752, 0.93163, 0.95815, 1.04293,
1974 1.00929, 0.99096, 0.99640, 1.03669, 1.30106},
1975 {1.00477, 1.00707, 1.01449, 1.02852, 1.05504, 1.13976,
1976 1.10617, 1.08784, 1.09329, 1.13358, 1.39796},
1977 {1.10166, 1.10397, 1.11130, 1.12541, 1.15257, 1.23672,
1978 1.20307, 1.18472, 1.19018, 1.23046, 1.49486},
1979 {1.19854, 1.20084, 1.20818, 1.22235, 1.24885, 1.33355,
1980 1.29992, 1.28156, 1.28707, 1.32735, 1.59177},
1981 {1.29544, 1.29780, 1.30507, 1.31917, 1.34575, 1.43073,
1982 1.39681, 1.37851, 1.38396, 1.42377, 1.68854},
1983 {1.39236, 1.39462, 1.40205, 1.41607, 1.44259, 1.52745,
1984 1.49368, 1.47541, 1.48083, 1.52112, 1.78546},
1985 {1.49314, 1.49149, 1.49885, 1.51297, 1.53949, 1.62420,
1986 1.59016, 1.57231, 1.57772, 1.61800, 1.88048},
1987 {1.58610, 1.58839, 1.59572, 1.60983, 1.63635, 1.72109,
1988 1.68651, 1.66921, 1.67463, 1.71489, 1.97918},
1989 {1.68400, 1.68529, 1.69261, 1.70671, 1.73331, 1.81830,
1990 1.78341, 1.76605, 1.77150, 1.81179, 2.07608},
1991 {1.77991, 1.78215, 1.78952, 1.80385, 1.83014, 1.91486,
1992 1.88128, 1.86215, 1.86837, 1.90865, 2.17304},
1993 {1.87674, 1.87904, 1.88647, 1.90052, 1.92712, 2.01173,
1994 1.97812, 1.95905, 1.96527, 2.00710, 2.26979},
1995 {1.97369, 1.97594, 1.98326, 1.99869, 2.02442, 2.10865,
1996 2.07501, 2.05666, 2.06214, 2.10243, 2.36669},
1997 {2.07052, 2.07281, 2.08016, 2.09425, 2.12132, 2.20555,
1998 2.17182, 2.15341, 2.15904, 2.19933, 2.46363},
1999 {2.16742, 2.16971, 2.17707, 2.19114, 2.21766, 2.30240,
2000 2.26877, 2.25015, 2.25573, 2.29586, 2.56060},
2001 {2.26423, 2.26659, 2.27396, 2.28803, 2.31456, 2.40828,
2002 2.36567, 2.34705, 2.35282, 2.39765, 2.65744},
2003 {2.36153, 2.36349, 2.37330, 2.38501, 2.41159, 2.49940,
2004 2.46257, 2.44420, 2.44843, 2.48987, 2.75431},
2005 {2.46558, 2.46035, 2.46822, 2.48181, 2.50849, 2.59630,
2006 2.55947, 2.54112, 2.54513, 2.58677, 2.85094},
2007 {2.56248, 2.55723, 2.56486, 2.57871, 2.60520, 2.68998,
2008 2.65626, 2.63790, 2.64316, 2.68360, 2.94813},
2009 {2.65178, 2.65441, 2.66153, 2.67556, 2.70210, 2.78687,
2010 2.75319, 2.73463, 2.74032, 2.78060, 3.04503},
2011 {2.74868, 2.75131, 2.75870, 2.77245, 2.79385, 2.88700,
2012 2.85009, 2.83177, 2.83723, 2.87750, 3.14193},
2013 {2.84574, 2.84789, 2.85560, 2.86935, 2.89075, 2.98060,
2014 2.94576, 2.92868, 2.93356, 2.97436, 3.23868},
2015 {2.94239, 2.94469, 2.95221, 2.96625, 2.99345, 3.07747,
2016 3.04266, 3.02545, 3.03051, 3.07118, 3.33555}};
2017
2018 // Garfield simulation at UD = -1600V; vd = 1.158cm/microsec, <driftfield> = 558V/cm
2019 Float_t time1600[ktimebin][kZbin] =
2020 {{0.09169, 0.09203, 0.09305, 0.09473, 0.09714, 0.10032,
2021 0.10441, 0.10990, 0.11835, 0.13986, 0.37845},
2022 {0.06589, 0.06626, 0.06738, 0.06924, 0.07184, 0.07521,
2023 0.07947, 0.08512, 0.09379, 0.11603, 0.35648},
2024 {0.03947, 0.04003, 0.04171, 0.04434, 0.04778, 0.05190,
2025 0.05678, 0.06304, 0.07292, 0.09876, 0.34759},
2026 {0.01111, 0.01281, 0.01718, 0.02281, 0.02879, 0.03477,
2027 0.04097, 0.04910, 0.06415, 0.10573, 0.36896},
2028 {0.01120, 0.01311, 0.01721, 0.02279, 0.02862, 0.03446,
2029 0.04074, 0.04981, 0.06825, 0.11595, 0.37255},
2030 {0.03919, 0.03980, 0.04132, 0.04380, 0.04704, 0.05102,
2031 0.05602, 0.06302, 0.07633, 0.10896, 0.36743},
2032 {0.06531, 0.06528, 0.06631, 0.06805, 0.07053, 0.07392,
2033 0.07853, 0.08505, 0.09669, 0.12578, 0.37967},
2034 {0.09157, 0.09171, 0.09216, 0.09301, 0.09475, 0.00000,
2035 0.11152, 0.11879, 0.13352, 0.16802, 0.42750},
2036 {0.13977, 0.14095, 0.14509, 0.15433, 0.17534, 0.26406,
2037 0.21660, 0.20345, 0.21113, 0.25067, 0.51434},
2038 {0.21816, 0.22041, 0.22631, 0.23850, 0.26208, 0.34340,
2039 0.30755, 0.29237, 0.29878, 0.33863, 0.60258},
2040 {0.30344, 0.30547, 0.31241, 0.32444, 0.34809, 0.42696,
2041 0.39464, 0.37919, 0.38546, 0.42530, 0.68926},
2042 {0.38969, 0.39164, 0.39810, 0.41059, 0.43441, 0.51246,
2043 0.48112, 0.46562, 0.47191, 0.51172, 0.77558},
2044 {0.47592, 0.47799, 0.48442, 0.49689, 0.52061, 0.59855,
2045 0.56752, 0.55201, 0.55826, 0.59808, 0.86202},
2046 {0.56226, 0.56428, 0.57074, 0.58324, 0.60696, 0.68483,
2047 0.65388, 0.63837, 0.64461, 0.68445, 0.94830},
2048 {0.64881, 0.65063, 0.65709, 0.66958, 0.69331, 0.77117,
2049 0.74023, 0.72472, 0.73098, 0.77079, 1.03486},
2050 {0.73506, 0.73698, 0.74344, 0.75596, 0.77964, 0.85751,
2051 0.82658, 0.81107, 0.81731, 0.85712, 1.12106},
2052 {0.82132, 0.82333, 0.82979, 0.84228, 0.86608, 0.94386,
2053 0.91293, 0.89742, 0.90367, 0.94335, 1.20737},
2054 {0.90767, 0.90968, 0.91614, 0.92863, 0.95236, 1.03021,
2055 0.99928, 0.98377, 0.99001, 1.02984, 1.29371},
2056 {0.99410, 0.99602, 1.00257, 1.01498, 1.03869, 1.11720,
2057 1.08563, 1.07011, 1.07637, 1.11621, 1.37873},
2058 {1.08036, 1.08240, 1.08884, 1.10138, 1.12504, 1.20301,
2059 1.17198, 1.15647, 1.16272, 1.20255, 1.46651},
2060 {1.16670, 1.16872, 1.17525, 1.18783, 1.21139, 1.28934,
2061 1.25833, 1.24281, 1.24909, 1.28889, 1.55275},
2062 {1.25307, 1.25510, 1.26153, 1.27404, 1.29773, 1.37584,
2063 1.34469, 1.32916, 1.33536, 1.37524, 1.63915},
2064 {1.33942, 1.34146, 1.34788, 1.36040, 1.38410, 1.46438,
2065 1.43105, 1.41537, 1.42176, 1.46158, 1.72538},
2066 {1.42579, 1.42782, 1.43458, 1.44674, 1.47043, 1.55085,
2067 1.51675, 1.50168, 1.50810, 1.54793, 1.81174},
2068 {1.51207, 1.51454, 1.52060, 1.53307, 1.55684, 1.63478,
2069 1.60336, 1.58820, 1.59446, 1.63414, 1.89814},
2070 {1.59856, 1.60047, 1.60693, 1.61942, 1.64317, 1.72257,
2071 1.69008, 1.67454, 1.68080, 1.72063, 1.98433},
2072 {1.68481, 1.68682, 1.69330, 1.70584, 1.72949, 1.80752,
2073 1.77643, 1.76089, 1.76716, 1.80692, 2.07069},
2074 {1.77117, 1.77319, 1.77969, 1.79260, 1.81583, 1.89376,
2075 1.86226, 1.84720, 1.85355, 1.89256, 2.15343},
2076 {1.85748, 1.85967, 1.86605, 1.87848, 1.90222, 1.98010,
2077 1.94913, 1.93271, 1.93981, 1.97968, 2.24355},
2078 {1.94386, 1.94587, 1.95233, 1.96484, 1.98854, 2.06646,
2079 2.03542, 2.01755, 2.02617, 2.06604, 2.32993},
2080 {2.03022, 2.03230, 2.03868, 2.05134, 2.07488, 2.15367,
2081 2.12178, 2.10391, 2.11252, 2.15432, 2.41623},
2082 {2.11656, 2.11857, 2.12505, 2.13772, 2.16147, 2.23919,
2083 2.20817, 2.19265, 2.20744, 2.23872, 2.49996},
2084 {2.20291, 2.20611, 2.21137, 2.22387, 2.24758, 2.32563,
2085 2.29450, 2.27901, 2.28525, 2.32507, 2.58897},
2086 {2.28922, 2.29172, 2.29774, 2.31345, 2.33400, 2.41287,
2087 2.38086, 2.36535, 2.37160, 2.40869, 2.67113},
2088 {2.37572, 2.37764, 2.38410, 2.39803, 2.42046, 2.49817,
2089 2.46721, 2.45171, 2.45794, 2.49505, 2.76061},
2090 {2.46190, 2.46396, 2.47043, 2.48340, 2.50665, 2.58453,
2091 2.55357, 2.53728, 2.54430, 2.58407, 2.84816},
2092 {2.54833, 2.55032, 2.55679, 2.56976, 2.59312, 2.67103,
2093 2.63993, 2.62364, 2.63062, 2.67040, 2.93444},
2094 {2.63456, 2.63660, 2.64304, 2.65555, 2.67938, 2.75739,
2095 2.72629, 2.71064, 2.71688, 2.75671, 3.01886}};
2096
2097 // Garfield simulation at UD = -1700V; vd = 1.299cm/microsec, <driftfield> = 590V/cm
2098 Float_t time1700[ktimebin][kZbin] =
2099 {{0.09167, 0.09201, 0.09302, 0.09471, 0.09712, 0.10029,
2100 0.10438, 0.10986, 0.11832, 0.13986, 0.37824},
2101 {0.06591, 0.06626, 0.06736, 0.06923, 0.07183, 0.07519,
2102 0.07944, 0.08511, 0.09378, 0.11603, 0.35625},
2103 {0.03946, 0.04003, 0.04170, 0.04433, 0.04777, 0.05189,
2104 0.05676, 0.06301, 0.07291, 0.09880, 0.34724},
2105 {0.01110, 0.01281, 0.01718, 0.02280, 0.02879, 0.03476,
2106 0.04096, 0.04910, 0.06417, 0.10582, 0.36861},
2107 {0.01115, 0.01294, 0.01721, 0.02276, 0.02862, 0.03447,
2108 0.04074, 0.04980, 0.06812, 0.11565, 0.37231},
2109 {0.03920, 0.03974, 0.04133, 0.04381, 0.04706, 0.05105,
2110 0.05603, 0.06299, 0.07618, 0.10860, 0.36646},
2111 {0.06498, 0.06529, 0.06634, 0.06808, 0.07055, 0.07395,
2112 0.07852, 0.08500, 0.09650, 0.12532, 0.37850},
2113 {0.09143, 0.09159, 0.09207, 0.09297, 0.09473, 0.00000,
2114 0.11102, 0.11809, 0.13245, 0.16627, 0.42496},
2115 {0.13646, 0.13750, 0.14112, 0.14926, 0.16806, 0.24960,
2116 0.20627, 0.19536, 0.20366, 0.24256, 0.50557},
2117 {0.20678, 0.20848, 0.21384, 0.22450, 0.24552, 0.32018,
2118 0.28740, 0.27477, 0.28196, 0.32128, 0.58475},
2119 {0.28287, 0.28461, 0.29020, 0.30108, 0.32224, 0.39467,
2120 0.36500, 0.35217, 0.35926, 0.39860, 0.66194},
2121 {0.35972, 0.36145, 0.36713, 0.37797, 0.39912, 0.47091,
2122 0.44212, 0.42925, 0.43632, 0.47563, 0.73892},
2123 {0.43667, 0.43841, 0.44413, 0.45494, 0.47607, 0.54780,
2124 0.51912, 0.50627, 0.51334, 0.55254, 0.81595},
2125 {0.51365, 0.51540, 0.52101, 0.53193, 0.55305, 0.62463,
2126 0.59617, 0.58328, 0.59035, 0.62965, 0.89303},
2127 {0.59064, 0.59240, 0.59801, 0.60893, 0.63009, 0.70169,
2128 0.67317, 0.66028, 0.66735, 0.70666, 0.96995},
2129 {0.66765, 0.66939, 0.67501, 0.68592, 0.70724, 0.77863,
2130 0.75016, 0.73728, 0.74435, 0.78366, 1.04696},
2131 {0.74464, 0.74636, 0.75200, 0.76293, 0.78405, 0.85561,
2132 0.82716, 0.81427, 0.82133, 0.86064, 1.12396},
2133 {0.82165, 0.82340, 0.82902, 0.83991, 0.86104, 0.93266,
2134 0.90414, 0.89128, 0.89834, 0.93763, 1.20100},
2135 {0.89863, 0.90042, 0.90659, 0.91705, 0.93805, 1.00960,
2136 0.98115, 0.96825, 0.97533, 1.01462, 1.27801},
2137 {0.97563, 0.97740, 0.98310, 0.99391, 1.01504, 1.08659,
2138 1.05814, 1.04526, 1.05233, 1.09163, 1.35503},
2139 {1.05276, 1.05451, 1.06002, 1.07090, 1.09099, 1.16357,
2140 1.13516, 1.12225, 1.12933, 1.16863, 1.43195},
2141 {1.12977, 1.13138, 1.13700, 1.14792, 1.16797, 1.24061,
2142 1.21212, 1.19926, 1.20626, 1.24554, 1.50900},
2143 {1.20664, 1.20839, 1.21400, 1.22490, 1.24606, 1.31772,
2144 1.28914, 1.27382, 1.28329, 1.32262, 1.58550},
2145 {1.28367, 1.28541, 1.29099, 1.30189, 1.32312, 1.39460,
2146 1.36612, 1.34924, 1.36030, 1.39961, 1.66310},
2147 {1.36064, 1.36249, 1.36799, 1.37896, 1.40004, 1.48030,
2148 1.44314, 1.43032, 1.43731, 1.47659, 1.73442},
2149 {1.43762, 1.43937, 1.44497, 1.45618, 1.47704, 1.54932,
2150 1.52012, 1.50725, 1.51430, 1.55357, 1.81708},
2151 {1.51462, 1.51937, 1.52203, 1.53316, 1.55403, 1.62572,
2152 1.59713, 1.58424, 1.59128, 1.63061, 1.89406},
2153 {1.59162, 1.59338, 1.59947, 1.60989, 1.63103, 1.70270,
2154 1.67411, 1.66124, 1.66799, 1.70759, 1.97103},
2155 {1.66874, 1.67037, 1.67597, 1.68687, 1.70814, 1.77969,
2156 1.75112, 1.73806, 1.74530, 1.78457, 2.04794},
2157 {1.74693, 1.74749, 1.75297, 1.76476, 1.78500, 1.85667,
2158 1.82811, 1.81504, 1.82101, 1.86161, 2.12492},
2159 {1.82260, 1.82437, 1.82995, 1.84174, 1.86202, 1.93372,
2160 1.90509, 1.89202, 1.89930, 1.93859, 2.20189},
2161 {1.89964, 1.90135, 1.90693, 1.91789, 1.93952, 2.01080,
2162 1.98207, 1.96921, 1.97628, 2.01384, 2.27887},
2163 {1.97662, 1.97917, 1.98611, 1.99487, 2.01601, 2.08778,
2164 2.05846, 2.04623, 2.05330, 2.09244, 2.35585},
2165 {2.05359, 2.05615, 2.06309, 2.07187, 2.09867, 2.16459,
2166 2.13610, 2.12322, 2.13029, 2.16942, 2.43199},
2167 {2.13063, 2.13233, 2.13795, 2.14886, 2.17008, 2.24199,
2168 2.21310, 2.20020, 2.20727, 2.24659, 2.50983},
2169 {2.20761, 2.20931, 2.21955, 2.22624, 2.24708, 2.32147,
2170 2.29009, 2.27725, 2.28276, 2.32359, 2.58680},
2171 {2.28459, 2.29108, 2.29202, 2.30286, 2.32007, 2.39559,
2172 2.36683, 2.35422, 2.36119, 2.40058, 2.66081},
2173 {2.36153, 2.36806, 2.36889, 2.37985, 2.40092, 2.47828,
2174 2.44381, 2.43099, 2.43819, 2.47750, 2.73779}};
2175
2176 // Garfield simulation at UD = -1800V; vd = 1.450cm/microsec, <driftfield> = 623V/cm
2177 Float_t time1800[ktimebin][kZbin] =
2178 {{0.09166, 0.09199, 0.09300, 0.09470, 0.09709, 0.10026,
2179 0.10434, 0.10983, 0.11831, 0.13987, 0.37802},
2180 {0.06585, 0.06623, 0.06735, 0.06921, 0.07180, 0.07520,
2181 0.07941, 0.08507, 0.09376, 0.11604, 0.35624},
2182 {0.03945, 0.04004, 0.04169, 0.04432, 0.04776, 0.05187,
2183 0.05674, 0.06300, 0.07290, 0.09884, 0.34704},
2184 {0.01108, 0.01287, 0.01717, 0.02280, 0.02880, 0.03476,
2185 0.04095, 0.04909, 0.06419, 0.10589, 0.36843},
2186 {0.01115, 0.01287, 0.01720, 0.02276, 0.02862, 0.03448,
2187 0.04073, 0.04973, 0.06799, 0.11535, 0.37224},
2188 {0.03918, 0.03975, 0.04134, 0.04382, 0.04707, 0.05105,
2189 0.05603, 0.06296, 0.07605, 0.10822, 0.36560},
2190 {0.06498, 0.06532, 0.06635, 0.06809, 0.07058, 0.07395,
2191 0.07855, 0.08495, 0.09632, 0.12488, 0.37730},
2192 {0.09130, 0.09160, 0.09199, 0.09300, 0.09472, 0.00000,
2193 0.11059, 0.11747, 0.13146, 0.16462, 0.42233},
2194 {0.13364, 0.13449, 0.13767, 0.14481, 0.16147, 0.23635,
2195 0.19706, 0.18812, 0.19704, 0.23520, 0.49749},
2196 {0.19698, 0.19844, 0.20311, 0.21236, 0.23082, 0.29920,
2197 0.26936, 0.25927, 0.26732, 0.30601, 0.56871},
2198 {0.26518, 0.26670, 0.27160, 0.28099, 0.29955, 0.36597,
2199 0.33885, 0.32858, 0.33653, 0.37524, 0.63801},
2200 {0.33441, 0.33553, 0.34040, 0.34987, 0.36841, 0.43428,
2201 0.40797, 0.39763, 0.40556, 0.44425, 0.70698},
2202 {0.40296, 0.40447, 0.40934, 0.41881, 0.43737, 0.50306,
2203 0.47695, 0.46662, 0.47455, 0.51329, 0.77600},
2204 {0.47296, 0.47344, 0.47830, 0.48779, 0.50632, 0.57200,
2205 0.54593, 0.53559, 0.54351, 0.58222, 0.84489},
2206 {0.54089, 0.54264, 0.54727, 0.55673, 0.57529, 0.64094,
2207 0.61490, 0.60457, 0.61249, 0.65118, 0.91394},
2208 {0.60987, 0.61138, 0.61624, 0.62573, 0.64428, 0.70989,
2209 0.68397, 0.67354, 0.68147, 0.72015, 0.98291},
2210 {0.67883, 0.68035, 0.68521, 0.69469, 0.71324, 0.77896,
2211 0.75287, 0.74251, 0.75043, 0.78912, 1.04458},
2212 {0.74780, 0.74932, 0.75421, 0.76367, 0.78221, 0.84785,
2213 0.82185, 0.81148, 0.81941, 0.85811, 1.12085},
2214 {0.81690, 0.81830, 0.82316, 0.83263, 0.85120, 0.91683,
2215 0.89077, 0.88045, 0.88837, 0.92707, 1.18976},
2216 {0.88574, 0.88726, 0.89228, 0.90198, 0.92017, 0.98578,
2217 0.95974, 0.94947, 0.95734, 0.99604, 1.25873},
2218 {0.95493, 0.95624, 0.96110, 0.97058, 0.98913, 1.05481,
2219 1.02873, 1.01839, 1.02631, 1.06503, 1.32772},
2220 {1.02392, 1.02524, 1.03008, 1.03955, 1.05810, 1.12378,
2221 1.09757, 1.08605, 1.09530, 1.13399, 1.39669},
2222 {1.09270, 1.09418, 1.09911, 1.10854, 1.12714, 1.19281,
2223 1.16502, 1.15633, 1.16427, 1.20271, 1.46574},
2224 {1.16168, 1.16323, 1.16801, 1.17772, 1.19604, 1.26190,
2225 1.23399, 1.22531, 1.23323, 1.27194, 1.53475},
2226 {1.23061, 1.23214, 1.23698, 1.24669, 1.26503, 1.33073,
2227 1.30461, 1.29428, 1.30220, 1.34091, 1.60372},
2228 {1.29960, 1.30110, 1.30596, 1.31544, 1.33398, 1.39962,
2229 1.37228, 1.36323, 1.37121, 1.40988, 1.67273},
2230 {1.36851, 1.37007, 1.37512, 1.38441, 1.40297, 1.46865,
2231 1.44256, 1.43222, 1.44017, 1.47878, 1.74155},
2232 {1.43752, 1.43904, 1.44773, 1.45338, 1.47220, 1.53759,
2233 1.51136, 1.50119, 1.50914, 1.54775, 1.81050},
2234 {1.50646, 1.50802, 1.51288, 1.52237, 1.54097, 1.60697,
2235 1.58049, 1.57018, 1.57811, 1.61678, 1.87947},
2236 {1.57545, 1.57720, 1.58185, 1.59134, 1.60996, 1.67787,
2237 1.64929, 1.63914, 1.64707, 1.68570, 1.94851},
2238 {1.64442, 1.64617, 1.65081, 1.66035, 1.67893, 1.74684,
2239 1.71826, 1.70745, 1.71604, 1.75310, 2.01748},
2240 {1.71337, 1.71513, 1.71978, 1.72932, 1.74645, 1.81346,
2241 1.78739, 1.77642, 1.78501, 1.82151, 2.08644},
2242 {1.78238, 1.78410, 1.78876, 1.79824, 1.81678, 1.88332,
2243 1.85639, 1.84262, 1.85397, 1.89270, 2.15533},
2244 {1.85135, 1.85306, 1.85778, 1.86728, 1.88580, 1.95615,
2245 1.92536, 1.91171, 1.92283, 1.96165, 2.22428},
2246 {1.92774, 1.92184, 1.92672, 1.93618, 1.95477, 2.02048,
2247 1.99427, 1.98068, 1.99192, 2.03062, 2.29338},
2248 {1.98929, 1.99081, 1.99567, 2.00515, 2.02373, 2.08987,
2249 2.06332, 2.05249, 2.05939, 2.09928, 2.36227},
2250 {2.05829, 2.05978, 2.06464, 2.07414, 2.09272, 2.15850,
2251 2.12928, 2.12194, 2.12987, 2.16825, 2.43083},
2252 {2.12726, 2.12869, 2.13360, 2.14425, 2.16160, 2.22872,
2253 2.20118, 2.19078, 2.19876, 2.23416, 2.50007}};
2254
2255 // Garfield simulation at UD = -1900V; vd = 1.610cm/microsec, <driftfield> = 655V/cm
2256 Float_t time1900[ktimebin][kZbin] =
2257 {{0.09166, 0.09198, 0.09298, 0.09467, 0.09707, 0.10023,
2258 0.10431, 0.10980, 0.11828, 0.13988, 0.37789},
2259 {0.06584, 0.06622, 0.06735, 0.06920, 0.07179, 0.07514,
2260 0.07938, 0.08505, 0.09374, 0.11606, 0.35599},
2261 {0.03945, 0.04002, 0.04169, 0.04432, 0.04775, 0.05185,
2262 0.05672, 0.06298, 0.07290, 0.09888, 0.34695},
2263 {0.01109, 0.01281, 0.01717, 0.02279, 0.02878, 0.03476,
2264 0.04094, 0.04909, 0.06421, 0.10597, 0.36823},
2265 {0.01115, 0.01287, 0.01720, 0.02294, 0.02862, 0.03448,
2266 0.04074, 0.04973, 0.06783, 0.11506, 0.37206},
2267 {0.03940, 0.03975, 0.04135, 0.04386, 0.04708, 0.05106,
2268 0.05604, 0.06293, 0.07592, 0.10787, 0.36484},
2269 {0.06500, 0.06534, 0.06638, 0.06811, 0.07060, 0.07413,
2270 0.07852, 0.08491, 0.09614, 0.12446, 0.37626},
2271 {0.09119, 0.09140, 0.09194, 0.09293, 0.09471, 0.00000,
2272 0.11013, 0.11685, 0.13050, 0.16302, 0.41991},
2273 {0.13111, 0.13190, 0.13466, 0.14091, 0.15554, 0.22409,
2274 0.18846, 0.18167, 0.19113, 0.22854, 0.48995},
2275 {0.18849, 0.18975, 0.19380, 0.20185, 0.21797, 0.28050,
2276 0.25368, 0.24575, 0.25446, 0.29249, 0.55442},
2277 {0.24995, 0.25125, 0.25563, 0.26366, 0.27986, 0.34065,
2278 0.31605, 0.30815, 0.31680, 0.35482, 0.61697},
2279 {0.31187, 0.31324, 0.31745, 0.32580, 0.34205, 0.40217,
2280 0.37825, 0.37031, 0.37897, 0.41696, 0.67890},
2281 {0.37401, 0.37531, 0.37955, 0.38777, 0.40395, 0.46408,
2282 0.44037, 0.43242, 0.44108, 0.47906, 0.74122},
2283 {0.43610, 0.43741, 0.44161, 0.44986, 0.46604, 0.52614,
2284 0.50248, 0.49452, 0.50316, 0.54116, 0.80326},
2285 {0.49820, 0.49988, 0.50372, 0.51196, 0.52814, 0.58822,
2286 0.56459, 0.55661, 0.56527, 0.60326, 0.86526},
2287 {0.56032, 0.56161, 0.56582, 0.57408, 0.59024, 0.65032,
2288 0.62670, 0.61872, 0.62737, 0.66537, 0.92749},
2289 {0.62240, 0.62371, 0.62792, 0.63624, 0.65236, 0.71241,
2290 0.68881, 0.68081, 0.68947, 0.72750, 0.98941},
2291 {0.68449, 0.68581, 0.69002, 0.69828, 0.71444, 0.77452,
2292 0.75089, 0.74295, 0.75157, 0.78957, 1.05157},
2293 {0.74660, 0.74790, 0.75212, 0.76036, 0.77654, 0.83748,
2294 0.81299, 0.80501, 0.81193, 0.85168, 1.11375},
2295 {0.80870, 0.81017, 0.81423, 0.82246, 0.83867, 0.89908,
2296 0.87509, 0.86660, 0.87577, 0.91376, 1.17586},
2297 {0.87080, 0.87233, 0.87632, 0.88458, 0.90074, 0.96083,
2298 0.93718, 0.92922, 0.93787, 0.97588, 1.23794},
2299 {0.93291, 0.93422, 0.93844, 0.94667, 0.96293, 1.02295,
2300 0.99929, 0.99127, 0.99997, 1.03797, 1.29995},
2301 {0.99500, 0.99645, 1.00308, 1.00877, 1.02497, 1.08504,
2302 1.06140, 1.05343, 1.06203, 1.10006, 1.36216},
2303 {1.05712, 1.05926, 1.06262, 1.07092, 1.08706, 1.14754,
2304 1.12350, 1.11550, 1.12417, 1.16218, 1.42427},
2305 {1.11921, 1.12059, 1.12473, 1.13297, 1.14916, 1.21140,
2306 1.18560, 1.17284, 1.18625, 1.22414, 1.48629},
2307 {1.18140, 1.18262, 1.18690, 1.19508, 1.21125, 1.27139,
2308 1.24164, 1.23495, 1.24838, 1.28634, 1.54852},
2309 {1.24340, 1.24473, 1.24901, 1.25732, 1.27336, 1.33358,
2310 1.30793, 1.30179, 1.31047, 1.34848, 1.61066},
2311 {1.30551, 1.30684, 1.31104, 1.32056, 1.33553, 1.39609,
2312 1.37004, 1.36392, 1.37045, 1.41057, 1.67259},
2313 {1.36755, 1.36892, 1.37315, 1.39148, 1.39755, 1.45820,
2314 1.43215, 1.42602, 1.43467, 1.47268, 1.73477},
2315 {1.42966, 1.43101, 1.43549, 1.45359, 1.45976, 1.52031,
2316 1.49601, 1.48811, 1.49677, 1.53477, 1.79691},
2317 {1.49180, 1.49321, 1.49760, 1.51570, 1.52175, 1.58185,
2318 1.55771, 1.55023, 1.55888, 1.59672, 1.85501},
2319 {1.55391, 1.55527, 1.55943, 1.57782, 1.58391, 1.64395,
2320 1.62008, 1.61233, 1.62085, 1.65883, 1.92091},
2321 {1.61599, 1.61732, 1.62154, 1.63993, 1.64612, 1.70608,
2322 1.68237, 1.67108, 1.68301, 1.72110, 1.97931},
2323 {1.67808, 1.67948, 1.68364, 1.70204, 1.70823, 1.76858,
2324 1.74404, 1.73539, 1.74512, 1.78321, 2.04522},
2325 {1.74019, 1.74152, 1.74573, 1.76415, 1.77015, 1.83040,
2326 1.80615, 1.79366, 1.80723, 1.84509, 2.10742},
2327 {1.80235, 1.80362, 1.80783, 1.82626, 1.83227, 1.89246,
2328 1.86795, 1.85405, 1.86938, 1.90720, 2.16953},
2329 {1.86442, 1.86572, 1.86994, 1.88837, 1.89438, 1.95445,
2330 1.93006, 1.92283, 1.93148, 1.96931, 2.23147},
2331 {1.92700, 1.92783, 1.93197, 1.95049, 1.95649, 2.01668,
2332 1.99217, 1.98486, 1.99352, 2.03143, 2.29358}};
2333
2334 // Garfield simulation at UD = -2000V; vd = 1.783cm/microsec, <driftfield> = 688V/cm
2335 Float_t time2000[ktimebin][kZbin] =
2336 {{0.09176, 0.09196, 0.09296, 0.09465, 0.09704, 0.10020,
2337 0.10427, 0.10977, 0.11825, 0.13988, 0.37774},
2338 {0.06583, 0.06620, 0.06735, 0.06918, 0.07177, 0.07513,
2339 0.07936, 0.08503, 0.09372, 0.11606, 0.35586},
2340 {0.03944, 0.04001, 0.04170, 0.04431, 0.04774, 0.05184,
2341 0.05670, 0.06296, 0.07291, 0.09893, 0.34680},
2342 {0.01108, 0.01281, 0.01719, 0.02279, 0.02879, 0.03474,
2343 0.04093, 0.04908, 0.06422, 0.10605, 0.36800},
2344 {0.01114, 0.01287, 0.01720, 0.02276, 0.02863, 0.03449,
2345 0.04073, 0.04970, 0.06774, 0.11478, 0.37179},
2346 {0.03925, 0.03977, 0.04135, 0.04386, 0.04711, 0.05108,
2347 0.05604, 0.06290, 0.07580, 0.10748, 0.36386},
2348 {0.06501, 0.06536, 0.06640, 0.06814, 0.07062, 0.07398,
2349 0.07852, 0.08487, 0.09598, 0.12405, 0.37519},
2350 {0.09109, 0.09127, 0.09188, 0.09292, 0.09472, 0.00000,
2351 0.10964, 0.11630, 0.12960, 0.16150, 0.41765},
2352 {0.12898, 0.12968, 0.13209, 0.13749, 0.15034, 0.21286,
2353 0.18088, 0.17590, 0.18591, 0.22254, 0.48315},
2354 {0.18122, 0.18227, 0.18574, 0.19263, 0.20674, 0.26376,
2355 0.23960, 0.23375, 0.24316, 0.28047, 0.54179},
2356 {0.23674, 0.23784, 0.24142, 0.24847, 0.26264, 0.31810,
2357 0.29602, 0.29008, 0.29944, 0.33675, 0.59795},
2358 {0.29279, 0.29382, 0.29742, 0.30448, 0.31865, 0.37364,
2359 0.35215, 0.34629, 0.35555, 0.39286, 0.65411},
2360 {0.34875, 0.34987, 0.35346, 0.36054, 0.37472, 0.42956,
2361 0.40825, 0.40229, 0.41167, 0.44894, 0.71033},
2362 {0.40484, 0.40594, 0.40954, 0.41660, 0.43077, 0.48560,
2363 0.46433, 0.45840, 0.46772, 0.50500, 0.76632},
2364 {0.46090, 0.46201, 0.46560, 0.47267, 0.48684, 0.54167,
2365 0.52041, 0.51449, 0.52382, 0.56108, 0.82227},
2366 {0.51698, 0.51809, 0.52173, 0.52874, 0.54291, 0.59776,
2367 0.57646, 0.57052, 0.57986, 0.61717, 0.87836},
2368 {0.57306, 0.57418, 0.57782, 0.58513, 0.59899, 0.65380,
2369 0.63255, 0.62661, 0.63594, 0.67325, 0.93460},
2370 {0.62912, 0.63024, 0.63383, 0.64103, 0.65506, 0.70988,
2371 0.68484, 0.68267, 0.69202, 0.72878, 0.99046},
2372 {0.68521, 0.68633, 0.68990, 0.69699, 0.71115, 0.76595,
2373 0.74468, 0.73872, 0.74814, 0.78538, 1.04674},
2374 {0.74127, 0.74239, 0.74605, 0.75303, 0.77022, 0.82204,
2375 0.80078, 0.79484, 0.80416, 0.84147, 1.10261},
2376 {0.79736, 0.79846, 0.80206, 0.80947, 0.82330, 0.87813,
2377 0.85688, 0.85087, 0.86023, 0.89752, 1.15874},
2378 {0.85342, 0.85454, 0.85815, 0.86519, 0.87936, 0.93417,
2379 0.91293, 0.90428, 0.91631, 0.95360, 1.20760},
2380 {0.90949, 0.91061, 0.91423, 0.92128, 0.93544, 0.99026,
2381 0.96807, 0.96305, 0.97239, 1.00967, 1.27078},
2382 {0.96556, 0.96669, 0.97111, 0.97734, 0.99151, 1.04664,
2383 1.02508, 1.01879, 1.02846, 1.06167, 1.32695},
2384 {1.02167, 1.02279, 1.02656, 1.03341, 1.04759, 1.10242,
2385 1.08115, 1.07003, 1.08453, 1.12184, 1.38304},
2386 {1.07776, 1.07883, 1.08242, 1.08950, 1.10384, 1.16422,
2387 1.13725, 1.13133, 1.14061, 1.17793, 1.43910},
2388 {1.13379, 1.13492, 1.13864, 1.14567, 1.15973, 1.21455,
2389 1.19323, 1.18734, 1.19668, 1.23401, 1.49528},
2390 {1.18988, 1.19098, 1.19457, 1.20164, 1.21582, 1.27064,
2391 1.24937, 1.24044, 1.25275, 1.29004, 1.55137},
2392 {1.24592, 1.24706, 1.25087, 1.25773, 1.27188, 1.32670,
2393 1.30544, 1.29953, 1.30883, 1.34613, 1.60743},
2394 {1.30202, 1.30313, 1.30673, 1.31381, 1.32797, 1.38278,
2395 1.36151, 1.35167, 1.36490, 1.40221, 1.66306},
2396 {1.35809, 1.35921, 1.36282, 1.36986, 1.38403, 1.43888,
2397 1.41760, 1.41174, 1.42083, 1.45830, 1.71915},
2398 {1.41419, 1.41528, 1.41890, 1.42595, 1.44011, 1.49496,
2399 1.47368, 1.46769, 1.47706, 1.51436, 1.77523},
2400 {1.47131, 1.47141, 1.47494, 1.48850, 1.49620, 1.55137,
2401 1.52977, 1.51820, 1.53315, 1.57042, 1.83158},
2402 {1.52635, 1.52750, 1.53103, 1.53814, 1.55228, 1.60736,
2403 1.58503, 1.57986, 1.58920, 1.62649, 1.88767},
2404 {1.58418, 1.58355, 1.58711, 1.59526, 1.60833, 1.66316,
2405 1.63345, 1.63261, 1.64556, 1.68204, 1.94359},
2406 {1.64027, 1.63958, 1.64489, 1.65024, 1.66443, 1.71925,
2407 1.69794, 1.69201, 1.70143, 1.73865, 1.99968},
2408 {1.69450, 1.69566, 1.69940, 1.70697, 1.71841, 1.77819,
2409 1.75396, 1.74814, 1.75743, 1.79083, 2.05427},
2410 {1.75054, 1.75221, 1.75527, 1.76306, 1.77662, 1.83428,
2411 1.81006, 1.81173, 1.81345, 1.85076, 2.10289}};
2412
2413 // Garfield simulation at UD = -2100V; vd = 1.959cm/microsec, <driftfield> = 720V/cm
2414 Float_t time2100[ktimebin][kZbin] =
2415 {{0.09160, 0.09194, 0.09294, 0.09462, 0.09701, 0.10017,
2416 0.10424, 0.10974, 0.11823, 0.13988, 0.37762},
2417 {0.06585, 0.06619, 0.06731, 0.06916, 0.07174, 0.07509,
2418 0.07933, 0.08500, 0.09370, 0.11609, 0.35565},
2419 {0.03960, 0.04001, 0.04171, 0.04430, 0.04774, 0.05182,
2420 0.05668, 0.06294, 0.07291, 0.09896, 0.34676},
2421 {0.01109, 0.01280, 0.01716, 0.02279, 0.02876, 0.03474,
2422 0.04096, 0.04908, 0.06424, 0.10612, 0.36790},
2423 {0.01114, 0.01285, 0.01719, 0.02287, 0.02863, 0.03449,
2424 0.04073, 0.04964, 0.06759, 0.11446, 0.37162},
2425 {0.03922, 0.03977, 0.04146, 0.04386, 0.04711, 0.05109,
2426 0.05605, 0.06287, 0.07575, 0.10713, 0.36298},
2427 {0.06504, 0.06538, 0.06641, 0.06818, 0.07064, 0.07426,
2428 0.07852, 0.08483, 0.09581, 0.12363, 0.37424},
2429 {0.09103, 0.09129, 0.09186, 0.09291, 0.09476, 0.00000,
2430 0.10923, 0.11578, 0.12873, 0.16005, 0.41525},
2431 {0.12723, 0.12777, 0.12988, 0.13458, 0.14579, 0.20264,
2432 0.17421, 0.17078, 0.18132, 0.21708, 0.47699},
2433 {0.17508, 0.17601, 0.17897, 0.18487, 0.19698, 0.24881,
2434 0.22737, 0.22337, 0.23348, 0.27000, 0.53032},
2435 {0.22571, 0.22663, 0.22969, 0.23570, 0.24787, 0.29826,
2436 0.27871, 0.27462, 0.28471, 0.32122, 0.58166},
2437 {0.27664, 0.27759, 0.28067, 0.28669, 0.29891, 0.34898,
2438 0.32982, 0.32570, 0.33576, 0.37229, 0.63268},
2439 {0.32766, 0.32862, 0.33170, 0.33778, 0.34988, 0.39973,
2440 0.38088, 0.37675, 0.38680, 0.42333, 0.68159},
2441 {0.37872, 0.37966, 0.38275, 0.38875, 0.40093, 0.45073,
2442 0.43192, 0.42780, 0.43786, 0.47438, 0.73480},
2443 {0.42974, 0.43070, 0.43378, 0.43982, 0.45196, 0.50177,
2444 0.48297, 0.47884, 0.48889, 0.52544, 0.78581},
2445 {0.48081, 0.48175, 0.48482, 0.49084, 0.50302, 0.55290,
2446 0.53398, 0.52988, 0.53994, 0.57647, 0.83687},
2447 {0.53645, 0.53295, 0.53586, 0.54188, 0.55408, 0.60398,
2448 0.58504, 0.58092, 0.59100, 0.62768, 0.88773},
2449 {0.58345, 0.58409, 0.58690, 0.59292, 0.60510, 0.65562,
2450 0.63609, 0.63197, 0.64203, 0.67856, 0.93907},
2451 {0.63397, 0.63490, 0.63795, 0.64403, 0.65613, 0.70612,
2452 0.68714, 0.68301, 0.69294, 0.72955, 0.99000},
2453 {0.68496, 0.68592, 0.68899, 0.69504, 0.70733, 0.75708,
2454 0.73818, 0.73405, 0.74412, 0.78064, 1.04100},
2455 {0.73600, 0.73696, 0.74003, 0.74624, 0.75828, 0.80805,
2456 0.78904, 0.78512, 0.79517, 0.83152, 1.09205},
2457 {0.78709, 0.78801, 0.79108, 0.79709, 0.80931, 0.85906,
2458 0.84027, 0.83614, 0.84621, 0.88269, 1.14058},
2459 {0.83808, 0.83905, 0.84215, 0.84816, 0.86031, 0.91011,
2460 0.89139, 0.88718, 0.89725, 0.93377, 1.19413},
2461 {0.88916, 0.89010, 0.89320, 0.89920, 0.91136, 0.96117,
2462 0.94235, 0.93822, 0.94828, 0.98480, 1.24538},
2463 {0.94036, 0.94113, 0.94422, 0.95023, 0.96241, 1.01220,
2464 0.99310, 0.98927, 0.99933, 1.03585, 1.29629},
2465 {0.99139, 0.99220, 0.99525, 1.00127, 1.01344, 1.06324,
2466 1.04451, 1.04033, 1.04836, 1.08690, 1.34727},
2467 {1.04261, 1.04325, 1.04628, 1.05232, 1.06448, 1.12090,
2468 1.09546, 1.09136, 1.10142, 1.13795, 1.39831},
2469 {1.09331, 1.09429, 1.09742, 1.10336, 1.11557, 1.16547,
2470 1.14658, 1.13642, 1.15247, 1.18898, 1.44936},
2471 {1.14436, 1.14539, 1.14847, 1.15443, 1.16662, 1.21794,
2472 1.19763, 1.19329, 1.20349, 1.23956, 1.50043},
2473 {1.19533, 1.19651, 1.19943, 1.20548, 1.21666, 1.26753,
2474 1.24862, 1.24434, 1.25455, 1.29106, 1.55142},
2475 {1.24638, 1.24756, 1.25046, 1.25648, 1.26764, 1.31858,
2476 1.29967, 1.29538, 1.30499, 1.34211, 1.60250},
2477 {1.29747, 1.29847, 1.30175, 1.30753, 1.31869, 1.36969,
2478 1.35069, 1.34656, 1.35663, 1.39316, 1.64644},
2479 {1.35537, 1.34952, 1.35255, 1.35869, 1.36973, 1.41387,
2480 1.40173, 1.39761, 1.40768, 1.44396, 1.70238},
2481 {1.39956, 1.40056, 1.40380, 1.40961, 1.42178, 1.46492,
2482 1.45278, 1.45423, 1.45872, 1.49522, 1.75557},
2483 {1.45080, 1.45159, 1.45463, 1.46109, 1.47287, 1.52263,
2484 1.50382, 1.50050, 1.50977, 1.54502, 1.80670},
2485 {1.50165, 1.50264, 1.50570, 1.51214, 1.52233, 1.57370,
2486 1.55484, 1.55155, 1.56080, 1.59731, 1.85778},
2487 {1.55269, 1.55364, 1.55675, 1.56274, 1.57491, 1.62598,
2488 1.60590, 1.60259, 1.61185, 1.64836, 1.90883},
2489 {1.60368, 1.60469, 1.60779, 1.61373, 1.62596, 1.67738,
2490 1.65651, 1.65249, 1.66290, 1.69936, 1.95959}};
2491
2492 // Garfield simulation at UD = -2200V; vd = 2.134cm/microsec, <driftfield> = 753V/cm
2493 Float_t time2200[ktimebin][kZbin] =
2494 {{0.09162, 0.09194, 0.09292, 0.09460, 0.09702, 0.10014,
2495 0.10421, 0.10971, 0.11820, 0.13990, 0.37745},
2496 {0.06581, 0.06618, 0.06730, 0.06915, 0.07173, 0.07507,
2497 0.07931, 0.08497, 0.09368, 0.11609, 0.35560},
2498 {0.03947, 0.04001, 0.04167, 0.04429, 0.04772, 0.05183,
2499 0.05667, 0.06293, 0.07292, 0.09900, 0.34673},
2500 {0.01111, 0.01280, 0.01716, 0.02279, 0.02876, 0.03473,
2501 0.04091, 0.04907, 0.06426, 0.10620, 0.36766},
2502 {0.01113, 0.01285, 0.01719, 0.02276, 0.02863, 0.03452,
2503 0.04076, 0.04960, 0.06745, 0.11419, 0.37139},
2504 {0.03923, 0.03978, 0.04137, 0.04387, 0.04713, 0.05110,
2505 0.05605, 0.06284, 0.07551, 0.10677, 0.36210},
2506 {0.06505, 0.06540, 0.06644, 0.06820, 0.07069, 0.07401,
2507 0.07852, 0.08479, 0.09565, 0.12325, 0.37313},
2508 {0.09107, 0.09127, 0.09181, 0.09291, 0.09474, 0.00000,
2509 0.10883, 0.11528, 0.12789, 0.15865, 0.41313},
2510 {0.12559, 0.12622, 0.12800, 0.13206, 0.14166, 0.19331,
2511 0.16832, 0.16632, 0.17724, 0.21218, 0.47098},
2512 {0.16992, 0.17070, 0.17325, 0.17831, 0.18871, 0.23557,
2513 0.21690, 0.21451, 0.22514, 0.26082, 0.52034},
2514 {0.21640, 0.21722, 0.21987, 0.22500, 0.23540, 0.28097,
2515 0.26399, 0.26154, 0.27214, 0.30784, 0.56734},
2516 {0.26318, 0.26400, 0.26679, 0.27181, 0.28220, 0.32739,
2517 0.31090, 0.30842, 0.31902, 0.35474, 0.61415},
2518 {0.31001, 0.31085, 0.31348, 0.31866, 0.32903, 0.37412,
2519 0.35777, 0.35546, 0.36588, 0.40159, 0.66103},
2520 {0.35687, 0.35769, 0.36033, 0.36556, 0.37588, 0.42094,
2521 0.40523, 0.40214, 0.41273, 0.44841, 0.70785},
2522 {0.40372, 0.40457, 0.40723, 0.41234, 0.42273, 0.46778,
2523 0.45148, 0.44903, 0.45961, 0.49526, 0.75486},
2524 {0.45062, 0.45139, 0.45404, 0.45966, 0.46958, 0.51470,
2525 0.49833, 0.49584, 0.50644, 0.54211, 0.80160},
2526 {0.49742, 0.49825, 0.50088, 0.50605, 0.51644, 0.56148,
2527 0.54518, 0.54270, 0.55330, 0.58897, 0.84854},
2528 {0.54427, 0.54510, 0.54774, 0.55290, 0.56329, 0.60846,
2529 0.59203, 0.58955, 0.60014, 0.63578, 0.89528},
2530 {0.59119, 0.59199, 0.59471, 0.59975, 0.61014, 0.65533,
2531 0.63889, 0.63636, 0.64699, 0.68269, 0.94197},
2532 {0.63866, 0.63880, 0.64145, 0.64664, 0.65701, 0.70639,
2533 0.68574, 0.68325, 0.69385, 0.72949, 0.98900},
2534 {0.68483, 0.68566, 0.68831, 0.69347, 0.70386, 0.74890,
2535 0.73260, 0.73010, 0.74069, 0.77638, 1.03320},
2536 {0.73168, 0.73255, 0.73515, 0.74031, 0.75072, 0.79576,
2537 0.77117, 0.77501, 0.78755, 0.82318, 1.08006},
2538 {0.77854, 0.78310, 0.78200, 0.79525, 0.79756, 0.84281,
2539 0.81803, 0.82393, 0.83441, 0.87008, 1.12692},
2540 {0.82541, 0.82642, 0.82916, 0.83528, 0.84442, 0.89086,
2541 0.87315, 0.87079, 0.88125, 0.91694, 1.17648},
2542 {0.87226, 0.87308, 0.87602, 0.88086, 0.89128, 0.93772,
2543 0.92001, 0.91751, 0.92811, 0.95587, 1.22328},
2544 {0.91921, 0.91994, 0.92256, 0.92772, 0.94713, 0.98566,
2545 0.96690, 0.96436, 0.97495, 1.01064, 1.26882},
2546 {0.96790, 0.96679, 0.96941, 0.97463, 0.99399, 1.03001,
2547 1.01376, 1.01112, 1.02181, 1.05749, 1.31568},
2548 {1.01278, 1.01390, 1.01674, 1.02147, 1.03182, 1.07820,
2549 1.06056, 1.05798, 1.06867, 1.10433, 1.36390},
2550 {1.05964, 1.06076, 1.06331, 1.06833, 1.07870, 1.13297,
2551 1.10742, 1.10520, 1.11543, 1.15120, 1.41069},
2552 {1.10664, 1.10762, 1.10997, 1.11519, 1.12556, 1.17531,
2553 1.15427, 1.14620, 1.16229, 1.19805, 1.45758},
2554 {1.15352, 1.15421, 1.15683, 1.16218, 1.17242, 1.21910,
2555 1.20035, 1.19863, 1.20579, 1.24473, 1.50412},
2556 {1.20019, 1.20115, 1.20369, 1.20892, 1.21928, 1.26913,
2557 1.24721, 1.24549, 1.25605, 1.29159, 1.54920},
2558 {1.24707, 1.24846, 1.25052, 1.25602, 1.26608, 1.31558,
2559 1.29448, 1.29232, 1.30293, 1.33675, 1.59798},
2560 {1.29391, 1.29475, 1.29738, 1.30255, 1.31294, 1.36244,
2561 1.34167, 1.33918, 1.34979, 1.38229, 1.64496},
2562 {1.34078, 1.34304, 1.34424, 1.35565, 1.35980, 1.40930,
2563 1.38853, 1.38229, 1.39664, 1.42863, 1.69162},
2564 {1.38762, 1.38847, 1.39110, 1.39627, 1.40666, 1.45183,
2565 1.43539, 1.43289, 1.44348, 1.47549, 1.73876},
2566 {1.43524, 1.43533, 1.43796, 1.44310, 1.45371, 1.49305,
2567 1.48224, 1.47941, 1.49034, 1.52601, 1.78552},
2568 {1.48122, 1.48219, 1.48482, 1.48991, 1.50030, 1.53991,
2569 1.52898, 1.52653, 1.53653, 1.57282, 1.82386}};
2570
4d18a639 2571 if (fTimeStruct1) {
2572 delete [] fTimeStruct1;
2573 }
2574 fTimeStruct1 = new Float_t[ktimebin*kZbin];
2575
2576 if (fTimeStruct2) {
2577 delete [] fTimeStruct2;
2578 }
2579 fTimeStruct2 = new Float_t[ktimebin*kZbin];
2580
2581 for (Int_t ctrt = 0; ctrt < ktimebin; ctrt++) {
2582 for (Int_t ctrz = 0; ctrz < kZbin; ctrz++) {
2583 if (vdrift > fVDsmp[6]) {
2584 fTimeStruct1[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2585 fTimeStruct2[ctrt+ctrz*ktimebin] = time2200[ctrt][ctrz];
2586 fVDlo = fVDsmp[6];
2587 fVDhi = fVDsmp[7];
2588 }
2589 else if (vdrift > fVDsmp[5]) {
2590 fTimeStruct1[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2591 fTimeStruct2[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2592 fVDlo = fVDsmp[5];
2593 fVDhi = fVDsmp[6];
2594 }
2595 else if (vdrift > fVDsmp[4]) {
2596 fTimeStruct1[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2597 fTimeStruct2[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2598 fVDlo = fVDsmp[4];
2599 fVDhi = fVDsmp[5];
2600 }
2601 else if (vdrift > fVDsmp[3]) {
2602 fTimeStruct1[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2603 fTimeStruct2[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2604 fVDlo = fVDsmp[3];
2605 fVDhi = fVDsmp[4];
2606 }
2607 else if (vdrift > fVDsmp[2]) {
2608 fTimeStruct1[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2609 fTimeStruct2[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2610 fVDlo = fVDsmp[2];
2611 fVDhi = fVDsmp[3];
2612 }
2613 else if (vdrift > fVDsmp[1]) {
2614 fTimeStruct1[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2615 fTimeStruct2[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2616 fVDlo = fVDsmp[1];
2617 fVDhi = fVDsmp[2];
2618 }
2619 else if (vdrift > (fVDsmp[0] - 1.0e-5)) {
2620 fTimeStruct1[ctrt+ctrz*ktimebin] = time1500[ctrt][ctrz];
2621 fTimeStruct2[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2622 fVDlo = fVDsmp[0];
2623 fVDhi = fVDsmp[1];
3551db50 2624 }
2625 }
2626 }
4d18a639 2627
3551db50 2628}
2629
2630//_____________________________________________________________________________
2631void AliTRDdigitizer::RecalcDiffusion(Float_t vdrift)
2632{
4d18a639 2633 //
2634 // Recalculates the diffusion parameters
2635 //
2636
2637 if (vdrift == fDiffLastVdrift) {
3551db50 2638 return;
4d18a639 2639 }
7754cd1f 2640
4d18a639 2641 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 2642 if (!simParam) {
4329977a 2643 AliFatal("Could not get simulation parameters");
3551db50 2644 return;
2645 }
2646
4d18a639 2647 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
9afbd7de 2648 if (!commonParam) {
4329977a 2649 AliFatal("Could not get common parameters");
3551db50 2650 return;
2651 }
2652
4d18a639 2653 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 2654 if (!calibration) {
4329977a 2655 AliFatal("Could not get calibration object");
3551db50 2656 return;
2657 }
1b95a37b 2658
4d18a639 2659 fDiffLastVdrift = vdrift;
0a17cc30 2660
2661 if (simParam->IsXenon()) {
b65e5048 2662
0a17cc30 2663 //
2664 // Vd and B-field dependent diffusion and Lorentz angle
2665 //
b65e5048 2666
0a17cc30 2667 // The magnetic field strength
2668 Double_t x[3] = { 0.0, 0.0, 0.0 };
f7a1cc68 2669 Double_t b[3] = {0.,0.,0.};
2670 TGeoGlobalMagField::Instance()->Field(x,b); // b[] is in kilo Gauss
0a17cc30 2671 Float_t field = b[2] * 0.1; // Tesla
b65e5048 2672
2673
2674
0a17cc30 2675 // DiffusionL
2676 const Int_t kNbL = 5;
2677 Float_t p0L[kNbL] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 };
2678 Float_t p1L[kNbL] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 };
2679 Float_t p2L[kNbL] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 };
2680 Float_t p3L[kNbL] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 };
b65e5048 2681
0a17cc30 2682 Int_t ibL = ((Int_t) (10 * (field - 0.15)));
2683 ibL = TMath::Max( 0,ibL);
2684 ibL = TMath::Min(kNbL,ibL);
b65e5048 2685
0a17cc30 2686 fDiffusionL = p0L[ibL]
b65e5048 2687 + p1L[ibL] * vdrift
2688 + p2L[ibL] * vdrift*vdrift
2689 + p3L[ibL] * vdrift*vdrift*vdrift;
2690
0a17cc30 2691 // DiffusionT
2692 const Int_t kNbT = 5;
2693 Float_t p0T[kNbT] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 };
2694 Float_t p1T[kNbT] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 };
2695 Float_t p2T[kNbT] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 };
2696 Float_t p3T[kNbT] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 };
b65e5048 2697
0a17cc30 2698 Int_t ibT= ((Int_t) (10 * (field - 0.15)));
2699 ibT = TMath::Max( 0,ibT);
2700 ibT = TMath::Min(kNbT,ibT);
b65e5048 2701
0a17cc30 2702 fDiffusionT = p0T[ibT]
2703 + p1T[ibT] * vdrift
2704 + p2T[ibT] * vdrift*vdrift
2705 + p3T[ibT] * vdrift*vdrift*vdrift;
b65e5048 2706
0a17cc30 2707 // OmegaTau
2708 fOmegaTau = calibration->GetOmegaTau(vdrift,field);
0a17cc30 2709 if (commonParam->ExBOn()) {
2710 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2711 }
2712 else {
2713 fLorentzFactor = 1.0;
2714 }
b65e5048 2715
0a17cc30 2716 }
b65e5048 2717
0a17cc30 2718 else if (simParam->IsArgon()) {
3551db50 2719
0a17cc30 2720 // Diffusion constants and Lorentz angle only for B = 0.5T
2721 fDiffusionL = 0.0182;
2722 fDiffusionT = 0.0159;
2723 fOmegaTau = 0.0219769;
2724 if (commonParam->ExBOn()) {
2725 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2726 }
2727 else {
2728 fLorentzFactor = 1.0;
2729 }
1b95a37b 2730
3551db50 2731 }
9afbd7de 2732
3551db50 2733}
2734
2735//_____________________________________________________________________________
2736Float_t AliTRDdigitizer::GetDiffusionL(Float_t vdrift)
2737{
2738 //
2739 // Returns the longitudinal diffusion coefficient for a given drift
2740 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2741 // The values are according to a GARFIELD simulation.
2742 //
2743
2744 RecalcDiffusion(vdrift);
4d18a639 2745
2746 return fDiffusionL;
9afbd7de 2747
3551db50 2748}
2749
2750//_____________________________________________________________________________
2751Float_t AliTRDdigitizer::GetDiffusionT(Float_t vdrift)
2752{
2753 //
2754 // Returns the transverse diffusion coefficient for a given drift
2755 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2756 // The values are according to a GARFIELD simulation.
2757 //
2758
2759 RecalcDiffusion(vdrift);
4d18a639 2760
2761 return fDiffusionT;
9afbd7de 2762
3551db50 2763}
2764
2765//_____________________________________________________________________________
4329977a 2766Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t absdriftlength
2767 , Double_t &lRow, Double_t &lCol, Double_t &lTime)
3551db50 2768{
2769 //
4329977a 2770 // Applies the diffusion smearing to the position of a single electron.
2771 // Depends on absolute drift length.
3551db50 2772 //
2773
2774 RecalcDiffusion(vdrift);
2775
4329977a 2776 Float_t driftSqrt = TMath::Sqrt(absdriftlength);
4d18a639 2777 Float_t sigmaT = driftSqrt * fDiffusionT;
2778 Float_t sigmaL = driftSqrt * fDiffusionL;
4329977a 2779 lRow = gRandom->Gaus(lRow ,sigmaT);
2780 lCol = gRandom->Gaus(lCol ,sigmaT * GetLorentzFactor(vdrift));
2781 lTime = gRandom->Gaus(lTime,sigmaL * GetLorentzFactor(vdrift));
3551db50 2782
2783 return 1;
9afbd7de 2784
3551db50 2785}
2786
2787//_____________________________________________________________________________
2788Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
2789{
9afbd7de 2790 //
2791 // Returns the recalculated Lorentz factor
2792 //
2793
3551db50 2794 RecalcDiffusion(vd);
4d18a639 2795
2796 return fLorentzFactor;
9afbd7de 2797
3551db50 2798}
2799
2800//_____________________________________________________________________________
4329977a 2801Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t &lCol)
3551db50 2802{
2803 //
4329977a 2804 // Applies E x B effects to the position of a single electron.
2805 // Depends on signed drift length.
3551db50 2806 //
2807
2808 RecalcDiffusion(vdrift);
4329977a 2809
2810 lCol = lCol + fOmegaTau * driftlength;
3551db50 2811
2812 return 1;
9afbd7de 2813
3551db50 2814}
b65e5048 2815
2816//_____________________________________________________________________________
2817void AliTRDdigitizer::ZS(AliTRDarrayADC *digits)
2818{
2819 //
2820 // Apply the ZS
2821 //
2822
2823 // Create the temporary digits container
2824 AliTRDarrayADC *tempDigits;
2825 tempDigits = new AliTRDarrayADC();
2826 Int_t dim4 = digits->GetNrow();
2827 Int_t dim5 = digits->GetNcol()+2;
2828 Int_t dim6 = digits->GetNtime();
2829 Int_t lim = dim5-1;
2830
2831 tempDigits->Allocate(dim4,dim5,dim6);
2832
2833 for(Int_t row=0;row<dim4;row++)
2834 {
2835 for(Int_t col=0;col<dim5;col++)
2836 {
2837 for(Int_t time=0;time<dim6;time++)
2838 {
2839 if(col==0||col==lim)
2840 {
2841 tempDigits->SetData(row,col,time,0);
2842 }
2843 else
2844 {
2845 tempDigits->SetData(row,col,time,digits->GetData(row,col-1,time));
2846 }
2847 }
2848 }
2849 }
2850
2851 //Create and initialize the mcm object
2852 AliTRDmcmSim* mcmfast;
2853 mcmfast = new AliTRDmcmSim();
2854 mcmfast->StartfastZS(dim5,dim6);
2855
2856 //Call the methods in the mcm class using the temporary array as input
2857 for(Int_t row=0;row<dim4;row++)
2858 {
2859 for(Int_t col=0;col<dim5;col++)
2860 {
2861 for(Int_t time=0;time<dim6;time++)
2862 {
2863 mcmfast->SetData(col,time,tempDigits->GetData(row,col,time));
2864 }
2865 }
2866 mcmfast->Filter();
2867 mcmfast->ZSMapping();
2868 mcmfast->FlagDigitsArray(tempDigits,row);
2869 mcmfast->StartfastZS(dim5,dim6);
2870 }
2871
2872 //Modify the digits array to indicate suppressed values
2873 for(Int_t irow=0; irow<dim4;irow++)
2874 {
2875 for(Int_t icol=1; icol<lim;icol++)
2876 {
2877 for(Int_t itime=0; itime<dim6;itime++)
2878 {
2879 if(tempDigits->GetData(irow,icol,itime)==-1) // If supressed in temporary array
2880 {
2881 digits->SetData(irow,icol-1,itime,-1); // Supressed values indicated by -1 in the digits array
2882 }
2883 }
2884 }
2885 }
2886
2887 // Delete objects
2888 delete mcmfast;
2889 delete tempDigits;
2890
2891}