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Fix bug in cluster position
[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 //
35// //
36////////////////////////////////////////////////////////////////////////////
6798b56e 37
f7336fa3 38#include <TMath.h>
39#include <TVector.h>
40#include <TRandom.h>
94de3818 41#include <TROOT.h>
42#include <TTree.h>
793ff80c 43#include <TFile.h>
44#include <TF1.h>
abaf1f1d 45#include <TList.h>
85cbec76 46#include <TTask.h>
3becff3c 47#include <TGeoManager.h>
793ff80c 48
49#include "AliRun.h"
88cb7938 50#include "AliRunLoader.h"
51#include "AliLoader.h"
52#include "AliConfig.h"
db30bf0f 53#include "AliMagF.h"
85cbec76 54#include "AliRunDigitizer.h"
88cb7938 55#include "AliRunLoader.h"
56#include "AliLoader.h"
ad2cc20b 57#include "AliLog.h"
f7336fa3 58
59#include "AliTRD.h"
793ff80c 60#include "AliTRDhit.h"
f7336fa3 61#include "AliTRDdigitizer.h"
da581aea 62#include "AliTRDdataArrayI.h"
625f5260 63#include "AliTRDdataArrayS.h"
da581aea 64#include "AliTRDdataArrayF.h"
793ff80c 65#include "AliTRDsegmentArray.h"
da581aea 66#include "AliTRDdigitsManager.h"
793ff80c 67#include "AliTRDgeometry.h"
a5cadd36 68#include "AliTRDpadPlane.h"
3551db50 69#include "AliTRDcalibDB.h"
70#include "AliTRDSimParam.h"
71#include "AliTRDCommonParam.h"
ecf39416 72#include "AliTRDfeeParam.h"
f7336fa3 73
4329977a 74#include "Cal/AliTRDCalROC.h"
75#include "Cal/AliTRDCalDet.h"
76
f7336fa3 77ClassImp(AliTRDdigitizer)
78
79//_____________________________________________________________________________
85cbec76 80AliTRDdigitizer::AliTRDdigitizer()
4d18a639 81 :AliDigitizer()
82 ,fRunLoader(0)
83 ,fDigitsManager(0)
84 ,fSDigitsManager(0)
85 ,fSDigitsManagerList(0)
86 ,fTRD(0)
87 ,fGeo(0)
88 ,fEvent(0)
89 ,fMasks(0)
90 ,fCompress(kTRUE)
91 ,fSDigits(kFALSE)
4d18a639 92 ,fMergeSignalOnly(kFALSE)
93 ,fDiffLastVdrift(0)
94 ,fDiffusionT(0.0)
95 ,fDiffusionL(0.0)
96 ,fOmegaTau(0.0)
97 ,fLorentzFactor(0.0)
98 ,fTimeLastVdrift(0)
99 ,fTimeStruct1(0)
100 ,fTimeStruct2(0)
101 ,fVDlo(0)
102 ,fVDhi(0)
f7336fa3 103{
104 //
105 // AliTRDdigitizer default constructor
106 //
3551db50 107
108 Init();
3becff3c 109
f7336fa3 110}
111
112//_____________________________________________________________________________
4d18a639 113AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
114 :AliDigitizer(name,title)
115 ,fRunLoader(0)
116 ,fDigitsManager(0)
117 ,fSDigitsManager(0)
118 ,fSDigitsManagerList(0)
119 ,fTRD(0)
120 ,fGeo(0)
121 ,fEvent(0)
122 ,fMasks(0)
123 ,fCompress(kTRUE)
124 ,fSDigits(kFALSE)
4d18a639 125 ,fMergeSignalOnly(kFALSE)
126 ,fDiffLastVdrift(0)
127 ,fDiffusionT(0.0)
128 ,fDiffusionL(0.0)
129 ,fOmegaTau(0.0)
130 ,fLorentzFactor(0.0)
131 ,fTimeLastVdrift(0)
132 ,fTimeStruct1(0)
133 ,fTimeStruct2(0)
134 ,fVDlo(0)
135 ,fVDhi(0)
f7336fa3 136{
137 //
85cbec76 138 // AliTRDdigitizer constructor
139 //
140
3551db50 141 Init();
3becff3c 142
85cbec76 143}
144
145//_____________________________________________________________________________
146AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
4d18a639 147 , const Text_t *name, const Text_t *title)
148 :AliDigitizer(manager,name,title)
149 ,fRunLoader(0)
150 ,fDigitsManager(0)
151 ,fSDigitsManager(0)
152 ,fSDigitsManagerList(0)
153 ,fTRD(0)
154 ,fGeo(0)
155 ,fEvent(0)
156 ,fMasks(0)
157 ,fCompress(kTRUE)
158 ,fSDigits(kFALSE)
4d18a639 159 ,fMergeSignalOnly(kFALSE)
160 ,fDiffLastVdrift(0)
161 ,fDiffusionT(0.0)
162 ,fDiffusionL(0.0)
163 ,fOmegaTau(0.0)
164 ,fLorentzFactor(0.0)
165 ,fTimeLastVdrift(0)
166 ,fTimeStruct1(0)
167 ,fTimeStruct2(0)
168 ,fVDlo(0)
169 ,fVDhi(0)
85cbec76 170{
171 //
172 // AliTRDdigitizer constructor
f7336fa3 173 //
174
3551db50 175 Init();
3becff3c 176
bfc40adc 177}
178
179//_____________________________________________________________________________
180AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
4d18a639 181 :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
182 ,fRunLoader(0)
183 ,fDigitsManager(0)
184 ,fSDigitsManager(0)
185 ,fSDigitsManagerList(0)
186 ,fTRD(0)
187 ,fGeo(0)
188 ,fEvent(0)
189 ,fMasks(0)
190 ,fCompress(kTRUE)
191 ,fSDigits(kFALSE)
4d18a639 192 ,fMergeSignalOnly(kFALSE)
193 ,fDiffLastVdrift(0)
194 ,fDiffusionT(0.0)
195 ,fDiffusionL(0.0)
196 ,fOmegaTau(0.0)
197 ,fLorentzFactor(0.0)
198 ,fTimeLastVdrift(0)
199 ,fTimeStruct1(0)
200 ,fTimeStruct2(0)
201 ,fVDlo(0)
202 ,fVDhi(0)
bfc40adc 203{
204 //
205 // AliTRDdigitizer constructor
206 //
207
3551db50 208 Init();
3becff3c 209
3551db50 210}
88cb7938 211
3551db50 212//_____________________________________________________________________________
213Bool_t AliTRDdigitizer::Init()
214{
3becff3c 215 //
216 // Initialize the digitizer with default values
217 //
218
85a5290f 219 fRunLoader = 0;
4487dad0 220 fDigitsManager = 0;
4487dad0 221 fSDigitsManager = 0;
85a5290f 222 fSDigitsManagerList = 0;
4487dad0 223 fTRD = 0;
224 fGeo = 0;
3becff3c 225
abaf1f1d 226 fEvent = 0;
85a5290f 227 fMasks = 0;
abaf1f1d 228 fCompress = kTRUE;
abaf1f1d 229 fSDigits = kFALSE;
4487dad0 230 fMergeSignalOnly = kFALSE;
3551db50 231
4d18a639 232 fTimeLastVdrift = -1;
233 fTimeStruct1 = 0;
234 fTimeStruct2 = 0;
235 fVDlo = 0;
236 fVDhi = 0;
3551db50 237
4d18a639 238 fDiffLastVdrift = -1;
239 fDiffusionT = 0.0;
240 fDiffusionL = 0.0;
241 fLorentzFactor = 0.0;
793ff80c 242
3551db50 243 return AliDigitizer::Init();
3becff3c 244
f7336fa3 245}
246
8230f242 247//_____________________________________________________________________________
4d18a639 248AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d)
249 :AliDigitizer(d)
250 ,fRunLoader(0)
251 ,fDigitsManager(0)
252 ,fSDigitsManager(0)
253 ,fSDigitsManagerList(0)
254 ,fTRD(0)
255 ,fGeo(0)
256 ,fEvent(0)
257 ,fMasks(0)
258 ,fCompress(d.fCompress)
259 ,fSDigits(d.fSDigits)
4d18a639 260 ,fMergeSignalOnly(d.fMergeSignalOnly)
261 ,fDiffLastVdrift(-1)
262 ,fDiffusionT(0.0)
263 ,fDiffusionL(0.0)
264 ,fOmegaTau(0.0)
265 ,fLorentzFactor(0.0)
266 ,fTimeLastVdrift(-1)
267 ,fTimeStruct1(0)
268 ,fTimeStruct2(0)
269 ,fVDlo(0)
270 ,fVDhi(0)
8230f242 271{
272 //
273 // AliTRDdigitizer copy constructor
274 //
275
4d18a639 276 // Do not copy timestructs, just invalidate lastvdrift.
277 // Next time they are requested, they get recalculated
278 if (((AliTRDdigitizer &) d).fTimeStruct1) {
279 delete [] ((AliTRDdigitizer &) d).fTimeStruct1;
280 ((AliTRDdigitizer &) d).fTimeStruct1 = 0;
281 }
282 if (((AliTRDdigitizer &) d).fTimeStruct2) {
283 delete [] ((AliTRDdigitizer &) d).fTimeStruct2;
284 ((AliTRDdigitizer &) d).fTimeStruct2 = 0;
285 }
8230f242 286
287}
288
f7336fa3 289//_____________________________________________________________________________
290AliTRDdigitizer::~AliTRDdigitizer()
291{
8230f242 292 //
293 // AliTRDdigitizer destructor
294 //
f7336fa3 295
abaf1f1d 296 if (fDigitsManager) {
297 delete fDigitsManager;
4d18a639 298 fDigitsManager = 0;
f7336fa3 299 }
300
4d18a639 301 if (fDigitsManager) {
302 delete fSDigitsManager;
303 fSDigitsManager = 0;
304 }
f7336fa3 305
abaf1f1d 306 if (fSDigitsManagerList) {
47b5729a 307 fSDigitsManagerList->Delete();
abaf1f1d 308 delete fSDigitsManagerList;
4487dad0 309 fSDigitsManagerList = 0;
e23fbb27 310 }
311
312 if (fMasks) {
313 delete [] fMasks;
4329977a 314 fMasks = 0;
e23fbb27 315 }
316
4d18a639 317 if (fTimeStruct1) {
318 delete [] fTimeStruct1;
319 fTimeStruct1 = 0;
3551db50 320 }
321
4d18a639 322 if (fTimeStruct2) {
323 delete [] fTimeStruct2;
324 fTimeStruct2 = 0;
3551db50 325 }
3becff3c 326
f162af62 327 if (fGeo) {
328 delete fGeo;
329 fGeo = 0;
330 }
331
f7336fa3 332}
333
8230f242 334//_____________________________________________________________________________
dd9a6ee3 335AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
336{
337 //
338 // Assignment operator
339 //
340
625f5260 341 if (this != &d) {
342 ((AliTRDdigitizer &) d).Copy(*this);
343 }
4d18a639 344
dd9a6ee3 345 return *this;
346
347}
348
349//_____________________________________________________________________________
e0d47c25 350void AliTRDdigitizer::Copy(TObject &d) const
8230f242 351{
352 //
353 // Copy function
354 //
355
85a5290f 356 ((AliTRDdigitizer &) d).fRunLoader = 0;
4487dad0 357 ((AliTRDdigitizer &) d).fDigitsManager = 0;
85a5290f 358 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
359 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
4487dad0 360 ((AliTRDdigitizer &) d).fTRD = 0;
361 ((AliTRDdigitizer &) d).fGeo = 0;
85a5290f 362 ((AliTRDdigitizer &) d).fEvent = 0;
363 ((AliTRDdigitizer &) d).fMasks = 0;
abaf1f1d 364 ((AliTRDdigitizer &) d).fCompress = fCompress;
abaf1f1d 365 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
4487dad0 366 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
0c24ba98 367
3551db50 368 AliTRDdigitizer& target = (AliTRDdigitizer &) d;
369
3becff3c 370 // Do not copy timestructs, just invalidate lastvdrift.
371 // Next time they are requested, they get recalculated
4d18a639 372 if (target.fTimeStruct1) {
95867fd1 373 delete [] target.fTimeStruct1;
4d18a639 374 target.fTimeStruct1 = 0;
3551db50 375 }
4d18a639 376 if (target.fTimeStruct2) {
95867fd1 377 delete [] target.fTimeStruct2;
4d18a639 378 target.fTimeStruct2 = 0;
3becff3c 379 }
4d18a639 380 target.fTimeLastVdrift = -1;
3becff3c 381
e23fbb27 382}
383
e23fbb27 384//_____________________________________________________________________________
4d18a639 385void AliTRDdigitizer::Exec(Option_t *option)
e23fbb27 386{
387 //
388 // Executes the merging
389 //
390
391 Int_t iInput;
392
393 AliTRDdigitsManager *sdigitsManager;
394
395 TString optionString = option;
396 if (optionString.Contains("deb")) {
9afbd7de 397 AliLog::SetClassDebugLevel("AliTRDdigitizer",1);
7925de54 398 AliInfo("Called with debug option");
e23fbb27 399 }
400
cec4059b 401 // The AliRoot file is already connected by the manager
625f5260 402 AliRunLoader *inrl = 0x0;
88cb7938 403
9afbd7de 404 if (gAlice) {
7925de54 405 AliDebug(1,"AliRun object found on file.");
9afbd7de 406 }
4487dad0 407 else {
88cb7938 408 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
409 inrl->LoadgAlice();
410 gAlice = inrl->GetAliRun();
9afbd7de 411 if (!gAlice) {
7925de54 412 AliError("Could not find AliRun object.")
9afbd7de 413 return;
414 }
4487dad0 415 }
cec4059b 416
e23fbb27 417 Int_t nInput = fManager->GetNinputs();
4d18a639 418 fMasks = new Int_t[nInput];
e23fbb27 419 for (iInput = 0; iInput < nInput; iInput++) {
420 fMasks[iInput] = fManager->GetMask(iInput);
421 }
e23fbb27 422
9afbd7de 423 //
e23fbb27 424 // Initialization
9afbd7de 425 //
e23fbb27 426
95867fd1 427 AliRunLoader *orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
428
67c67368 429 if (InitDetector()) {
9afbd7de 430
95867fd1 431 AliLoader *ogime = orl->GetLoader("TRDLoader");
67c67368 432
95867fd1 433 TTree *tree = 0;
9afbd7de 434 if (fSDigits) {
435 // If we produce SDigits
436 tree = ogime->TreeS();
437 if (!tree) {
438 ogime->MakeTree("S");
67c67368 439 tree = ogime->TreeS();
67c67368 440 }
9afbd7de 441 }
442 else {
443 // If we produce Digits
444 tree = ogime->TreeD();
445 if (!tree) {
446 ogime->MakeTree("D");
447 tree = ogime->TreeD();
67c67368 448 }
9afbd7de 449 }
450
67c67368 451 MakeBranch(tree);
9afbd7de 452
67c67368 453 }
454
e23fbb27 455 for (iInput = 0; iInput < nInput; iInput++) {
456
7925de54 457 AliDebug(1,Form("Add input stream %d",iInput));
e23fbb27 458
9afbd7de 459 // Check if the input tree exists
88cb7938 460 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
4d18a639 461 AliLoader *gime = inrl->GetLoader("TRDLoader");
88cb7938 462
4d18a639 463 TTree *treees = gime->TreeS();
9afbd7de 464 if (treees == 0x0) {
465 if (gime->LoadSDigits()) {
466 AliError(Form("Error Occured while loading S. Digits for input %d.",iInput));
467 return;
468 }
4d18a639 469 treees = gime->TreeS();
9afbd7de 470 }
88cb7938 471
472 if (treees == 0x0) {
7925de54 473 AliError(Form("Input stream %d does not exist",iInput));
c57e2264 474 return;
475 }
476
e23fbb27 477 // Read the s-digits via digits manager
478 sdigitsManager = new AliTRDdigitsManager();
e23fbb27 479 sdigitsManager->SetSDigits(kTRUE);
88cb7938 480
4d18a639 481 AliRunLoader *rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
482 AliLoader *gimme = rl->GetLoader("TRDLoader");
483 if (!gimme->TreeS()) {
484 gimme->LoadSDigits();
485 }
88cb7938 486 sdigitsManager->ReadDigits(gimme->TreeS());
e23fbb27 487
488 // Add the s-digits to the input list
489 AddSDigitsManager(sdigitsManager);
490
491 }
492
493 // Convert the s-digits to normal digits
7925de54 494 AliDebug(1,"Do the conversion");
e23fbb27 495 SDigits2Digits();
496
497 // Store the digits
7925de54 498 AliDebug(1,"Write the digits");
e23fbb27 499 fDigitsManager->WriteDigits();
88cb7938 500
9afbd7de 501 // Write parameters
67c67368 502 orl->CdGAFile();
67c67368 503
7925de54 504 AliDebug(1,"Done");
e23fbb27 505
b1113c6b 506 DeleteSDigitsManager();
507
e23fbb27 508}
509
f7336fa3 510//_____________________________________________________________________________
e23fbb27 511Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
f7336fa3 512{
513 //
514 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
515 //
f7336fa3 516 // Connect the AliRoot file containing Geometry, Kine, and Hits
3becff3c 517 //
f540341d 518
e191bb57 519 TString evfoldname = AliConfig::GetDefaultEventFolderName();
9afbd7de 520
f540341d 521 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
9afbd7de 522 if (!fRunLoader) {
523 fRunLoader = AliRunLoader::Open(file,evfoldname,"UPDATE");
524 }
9afbd7de 525 if (!fRunLoader) {
95867fd1 526 AliError(Form("Can not open session for file %s.",file));
527 return kFALSE;
528 }
529
530 if (!fRunLoader->GetAliRun()) {
531 fRunLoader->LoadgAlice();
532 }
533 gAlice = fRunLoader->GetAliRun();
534
535 if (gAlice) {
7925de54 536 AliDebug(1,"AliRun object found on file.");
95867fd1 537 }
538 else {
7925de54 539 AliError("Could not find AliRun object.");
95867fd1 540 return kFALSE;
541 }
542
543 fEvent = nEvent;
544
545 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
546 if (!loader) {
547 AliError("Can not get TRD loader from Run Loader");
548 return kFALSE;
549 }
550
551 if (InitDetector()) {
552 TTree *tree = 0;
553 if (fSDigits) {
554 // If we produce SDigits
555 tree = loader->TreeS();
556 if (!tree) {
557 loader->MakeTree("S");
558 tree = loader->TreeS();
559 }
560 }
561 else {
562 // If we produce Digits
563 tree = loader->TreeD();
564 if (!tree) {
565 loader->MakeTree("D");
566 tree = loader->TreeD();
567 }
568 }
569 return MakeBranch(tree);
570 }
571 else {
572 return kFALSE;
573 }
574
575}
576
577//_____________________________________________________________________________
578Bool_t AliTRDdigitizer::Open(AliRunLoader *runLoader, Int_t nEvent)
579{
580 //
581 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
582 //
583 // Connect the AliRoot file containing Geometry, Kine, and Hits
584 //
585
586 fRunLoader = runLoader;
587 if (!fRunLoader) {
588 AliError("RunLoader does not exist");
589 return kFALSE;
4d18a639 590 }
88cb7938 591
9afbd7de 592 if (!fRunLoader->GetAliRun()) {
593 fRunLoader->LoadgAlice();
594 }
88cb7938 595 gAlice = fRunLoader->GetAliRun();
596
da581aea 597 if (gAlice) {
7925de54 598 AliDebug(1,"AliRun object found on file.");
da581aea 599 }
600 else {
7925de54 601 AliError("Could not find AliRun object.");
da581aea 602 return kFALSE;
603 }
f7336fa3 604
605 fEvent = nEvent;
606
4d18a639 607 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 608 if (!loader) {
609 AliError("Can not get TRD loader from Run Loader");
610 return kFALSE;
611 }
88cb7938 612
abaf1f1d 613 if (InitDetector()) {
4d18a639 614 TTree *tree = 0;
9afbd7de 615 if (fSDigits) {
616 // If we produce SDigits
617 tree = loader->TreeS();
618 if (!tree) {
619 loader->MakeTree("S");
620 tree = loader->TreeS();
4d18a639 621 }
9afbd7de 622 }
623 else {
624 // If we produce Digits
95867fd1 625 tree = loader->TreeD();
9afbd7de 626 if (!tree) {
627 loader->MakeTree("D");
628 tree = loader->TreeD();
4d18a639 629 }
9afbd7de 630 }
88cb7938 631 return MakeBranch(tree);
abaf1f1d 632 }
633 else {
634 return kFALSE;
635 }
793ff80c 636
637}
638
639//_____________________________________________________________________________
640Bool_t AliTRDdigitizer::InitDetector()
641{
642 //
643 // Sets the pointer to the TRD detector and the geometry
644 //
645
dd9a6ee3 646 // Get the pointer to the detector class and check for version 1
4487dad0 647 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
cec4059b 648 if (!fTRD) {
7925de54 649 AliFatal("No TRD module found");
cec4059b 650 exit(1);
651 }
dd9a6ee3 652 if (fTRD->IsVersion() != 1) {
7925de54 653 AliFatal("TRD must be version 1 (slow simulator)");
dd9a6ee3 654 exit(1);
655 }
656
657 // Get the geometry
f162af62 658 fGeo = new AliTRDgeometry();
dd9a6ee3 659
abaf1f1d 660 // Create a digits manager
625f5260 661 if (fDigitsManager) {
662 delete fDigitsManager;
663 }
abaf1f1d 664 fDigitsManager = new AliTRDdigitsManager();
665 fDigitsManager->SetSDigits(fSDigits);
666 fDigitsManager->CreateArrays();
667 fDigitsManager->SetEvent(fEvent);
abaf1f1d 668
669 // The list for the input s-digits manager to be merged
47b5729a 670 if (fSDigitsManagerList) {
671 fSDigitsManagerList->Delete();
3becff3c 672 }
673 else {
47b5729a 674 fSDigitsManagerList = new TList();
675 }
abaf1f1d 676
4487dad0 677 return kTRUE;
f7336fa3 678
679}
680
6244debe 681//_____________________________________________________________________________
95867fd1 682Bool_t AliTRDdigitizer::MakeBranch(TTree *tree) const
6244debe 683{
abaf1f1d 684 //
685 // Create the branches for the digits array
6244debe 686 //
687
88cb7938 688 return fDigitsManager->MakeBranch(tree);
6244debe 689
690}
691
625f5260 692//_____________________________________________________________________________
693void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
694{
695 //
696 // Add a digits manager for s-digits to the input list.
697 //
698
699 fSDigitsManagerList->Add(man);
700
701}
702
703//_____________________________________________________________________________
704void AliTRDdigitizer::DeleteSDigitsManager()
705{
706 //
707 // Removes digits manager from the input list.
708 //
709
710 fSDigitsManagerList->Delete();
711
712}
713
f7336fa3 714//_____________________________________________________________________________
715Bool_t AliTRDdigitizer::MakeDigits()
716{
717 //
872a7aba 718 // Creates digits.
f7336fa3 719 //
720
625f5260 721 AliDebug(1,"Start creating digits");
722
723 if (!fGeo) {
724 AliError("No geometry defined");
725 return kFALSE;
726 }
f7336fa3 727
625f5260 728 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
729 if (!calibration) {
730 AliFatal("Could not get calibration object");
731 return kFALSE;
732 }
733
734 const Int_t kNdet = AliTRDgeometry::Ndet();
735
736 Float_t **hits = new Float_t*[kNdet];
737 Int_t *nhit = new Int_t[kNdet];
738
739 AliTRDdataArrayF *signals = 0x0;
740
741 // Sort all hits according to detector number
742 if (!SortHits(hits,nhit)) {
743 AliError("Sorting hits failed");
744 return kFALSE;
745 }
746
747 // Loop through all detectors
748 for (Int_t det = 0; det < kNdet; det++) {
749
750 // Detectors that are switched off, not installed, etc.
751 if (( calibration->IsChamberInstalled(det)) &&
752 (!calibration->IsChamberMasked(det)) &&
753 ( fGeo->ChamberInGeometry(det)) &&
754 (nhit[det] > 0)) {
755
756 signals = new AliTRDdataArrayF();
757
758 // Convert the hits of the current detector to detector signals
759 if (!ConvertHits(det,hits[det],nhit[det],signals)) {
760 AliError(Form("Conversion of hits failed for detector=%d",det));
761 return kFALSE;
762 }
763 // Convert the detector signals to digits or s-digits
764 if (!ConvertSignals(det,signals)) {
765 AliError(Form("Conversion of signals failed for detector=%d",det));
766 return kFALSE;
767 }
768
769 // Delete the signals array
770 delete signals;
771 signals = 0x0;
772
773 } // if: detector status
774
27cea06a 775 delete [] hits[det];
776
625f5260 777 } // for: detector
778
779 delete [] hits;
780 delete [] nhit;
781
782 return kTRUE;
783
784}
785
786//_____________________________________________________________________________
787Bool_t AliTRDdigitizer::SortHits(Float_t **hits, Int_t *nhit)
788{
789 //
790 // Read all the hits and sorts them according to detector number
791 // in the output array <hits>.
792 //
793
794 AliDebug(1,"Start sorting hits");
795
796 const Int_t kNdet = AliTRDgeometry::Ndet();
797 // Size of the hit vector
798 const Int_t kNhit = 6;
799
800 Float_t *xyz = 0;
801 Int_t nhitTrk = 0;
802
803 Int_t *lhit = new Int_t[kNdet];
804
805 for (Int_t det = 0; det < kNdet; det++) {
806 lhit[det] = 0;
807 nhit[det] = 0;
808 hits[det] = 0;
809 }
810
811 AliLoader *gimme = fRunLoader->GetLoader("TRDLoader");
812 if (!gimme->TreeH()) {
813 gimme->LoadHits();
814 }
815 TTree *hitTree = gimme->TreeH();
816 if (hitTree == 0x0) {
817 AliError("Can not get TreeH");
818 return kFALSE;
819 }
820 fTRD->SetTreeAddress();
821
822 // Get the number of entries in the hit tree
823 // (Number of primary particles creating a hit somewhere)
824 Int_t nTrk = (Int_t) hitTree->GetEntries();
825 AliDebug(1,Form("Found %d tracks",nTrk));
826
827 // Loop through all the tracks in the tree
828 for (Int_t iTrk = 0; iTrk < nTrk; iTrk++) {
829
830 gAlice->ResetHits();
831 hitTree->GetEvent(iTrk);
832
833 if (!fTRD->Hits()) {
834 AliError(Form("No hits array for track = %d",iTrk));
835 continue;
836 }
837
838 // Number of hits for this track
839 nhitTrk = fTRD->Hits()->GetEntriesFast();
840
841 Int_t hitCnt = 0;
842 // Loop through the TRD hits
843 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
844 while (hit) {
845
846 hitCnt++;
847
848 // Don't analyze test hits
849 if (((Int_t) hit->GetCharge()) != 0) {
850
851 Int_t trk = hit->Track();
852 Int_t det = hit->GetDetector();
853 Int_t q = hit->GetCharge();
854 Float_t x = hit->X();
855 Float_t y = hit->Y();
856 Float_t z = hit->Z();
857 Float_t time = hit->GetTime();
858
859 if (nhit[det] == lhit[det]) {
860 // Inititialization of new detector
861 xyz = new Float_t[kNhit*(nhitTrk+lhit[det])];
862 if (hits[det]) {
863 memcpy(xyz,hits[det],sizeof(Float_t)*kNhit*lhit[det]);
864 delete [] hits[det];
865 }
866 lhit[det] += nhitTrk;
867 hits[det] = xyz;
868 }
869 else {
870 xyz = hits[det];
871 }
872 xyz[nhit[det]*kNhit+0] = x;
873 xyz[nhit[det]*kNhit+1] = y;
874 xyz[nhit[det]*kNhit+2] = z;
875 xyz[nhit[det]*kNhit+3] = q;
876 xyz[nhit[det]*kNhit+4] = trk;
877 xyz[nhit[det]*kNhit+5] = time;
878 nhit[det]++;
879
880 } // if: charge != 0
881
882 hit = (AliTRDhit *) fTRD->NextHit();
883
884 } // for: hits of one track
885
886 } // for: tracks
887
888 delete [] lhit;
889
890 return kTRUE;
891
892}
f7336fa3 893
625f5260 894//_____________________________________________________________________________
895Bool_t AliTRDdigitizer::ConvertHits(Int_t det, Float_t *hits, Int_t nhit
896 , AliTRDdataArrayF *signals)
897{
898 //
899 // Converts the detectorwise sorted hits to detector signals
900 //
901
902 AliDebug(1,Form("Start converting hits for detector=%d (nhits=%d)",det,nhit));
f7336fa3 903
793ff80c 904 // Number of pads included in the pad response
a5cadd36 905 const Int_t kNpad = 3;
793ff80c 906 // Number of track dictionary arrays
625f5260 907 const Int_t kNdict = AliTRDdigitsManager::kNDict;
908 // Size of the hit vector
909 const Int_t kNhit = 6;
793ff80c 910
4329977a 911 // Width of the amplification region
912 const Float_t kAmWidth = AliTRDgeometry::AmThick();
3becff3c 913 // Width of the drift region
ccb4315c 914 const Float_t kDrWidth = AliTRDgeometry::DrThick();
4329977a 915 // Drift + amplification region
916 const Float_t kDrMin = - 0.5 * kAmWidth;
917 const Float_t kDrMax = kDrWidth + 0.5 * kAmWidth;
3551db50 918
625f5260 919 Int_t iPad = 0;
920 Int_t dict = 0;
921 Int_t timeBinTRFend = 1;
872a7aba 922
a5cadd36 923 Double_t pos[3];
4329977a 924 Double_t loc[3];
a5cadd36 925 Double_t padSignal[kNpad];
926 Double_t signalOld[kNpad];
872a7aba 927
625f5260 928 AliTRDdataArrayI *dictionary[kNdict];
4329977a 929
9afbd7de 930 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 931 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
625f5260 932 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
933
3becff3c 934 if (!commonParam) {
4329977a 935 AliFatal("Could not get common parameterss");
3551db50 936 return kFALSE;
937 }
625f5260 938 if (!simParam) {
939 AliFatal("Could not get simulation parameters");
940 return kFALSE;
941 }
3becff3c 942 if (!calibration) {
4329977a 943 AliFatal("Could not get calibration object");
3551db50 944 return kFALSE;
945 }
946
625f5260 947 // Get the detector wise calibration objects
948 AliTRDCalROC *calVdriftROC = 0;
949 Float_t calVdriftDetValue = 0.0;
950 const AliTRDCalDet *calVdriftDet = calibration->GetVdriftDet();
951 AliTRDCalROC *calT0ROC = 0;
952 Float_t calT0DetValue = 0.0;
953 const AliTRDCalDet *calT0Det = calibration->GetT0Det();
4329977a 954
4329977a 955 if (simParam->TRFOn()) {
956 timeBinTRFend = ((Int_t) (simParam->GetTRFhi()
957 * commonParam->GetSamplingFrequency())) - 1;
4329977a 958 }
959
3becff3c 960 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
b43a3e17 961 Float_t samplingRate = commonParam->GetSamplingFrequency();
4329977a 962 Float_t elAttachProp = simParam->GetElAttachProp() / 100.0;
a328fff9 963
625f5260 964 AliTRDpadPlane *padPlane = fGeo->GetPadPlane(det);
053767a4 965 Int_t layer = fGeo->GetLayer(det);
625f5260 966 Float_t row0 = padPlane->GetRow0ROC();
967 Int_t nRowMax = padPlane->GetNrows();
968 Int_t nColMax = padPlane->GetNcols();
969
970 // Create a new array for the signals
971 signals->Allocate(nRowMax,nColMax,nTimeTotal);
972
973 // Create a new array for the dictionary
974 for (dict = 0; dict < kNdict; dict++) {
975 dictionary[dict] = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(det,dict);
976 dictionary[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
977 }
978
979 // Loop through the hits in this detector
980 for (Int_t hit = 0; hit < nhit; hit++) {
981
982 pos[0] = hits[hit*kNhit+0];
983 pos[1] = hits[hit*kNhit+1];
984 pos[2] = hits[hit*kNhit+2];
985 Float_t q = hits[hit*kNhit+3];
986 Float_t hittime = hits[hit*kNhit+5];
987 Int_t track = ((Int_t) hits[hit*kNhit+4]);
988
989 Int_t inDrift = 1;
990
991 // Find the current volume with the geo manager
992 gGeoManager->SetCurrentPoint(pos);
993 gGeoManager->FindNode();
994 if (strstr(gGeoManager->GetPath(),"/UK")) {
995 inDrift = 0;
996 }
793ff80c 997
625f5260 998 // Get the calibration objects
999 calVdriftROC = calibration->GetVdriftROC(det);
1000 calVdriftDetValue = calVdriftDet->GetValue(det);
1001 calT0ROC = calibration->GetT0ROC(det);
1002 calT0DetValue = calT0Det->GetValue(det);
1003
1004 // Go to the local coordinate system:
1005 // loc[0] - col direction in amplification or driftvolume
1006 // loc[1] - row direction in amplification or driftvolume
1007 // loc[2] - time direction in amplification or driftvolume
1008 gGeoManager->MasterToLocal(pos,loc);
1009 if (inDrift) {
1010 // Relative to middle of amplification region
1011 loc[2] = loc[2] - kDrWidth/2.0 - kAmWidth/2.0;
1012 }
793ff80c 1013
625f5260 1014 // The driftlength [cm] (w/o diffusion yet !).
1015 // It is negative if the hit is between pad plane and anode wires.
1016 Double_t driftlength = -1.0 * loc[2];
e23fbb27 1017
625f5260 1018 // Stupid patch to take care of TR photons that are absorbed
1019 // outside the chamber volume. A real fix would actually need
1020 // a more clever implementation of the TR hit generation
1021 if (q < 0.0) {
1022 if ((loc[1] < padPlane->GetRowEndROC()) ||
1023 (loc[1] > padPlane->GetRow0ROC())) {
f881dc35 1024 continue;
1025 }
625f5260 1026 if ((driftlength < kDrMin) ||
1027 (driftlength > kDrMax)) {
1028 continue;
4329977a 1029 }
625f5260 1030 }
f881dc35 1031
625f5260 1032 // Get row and col of unsmeared electron to retrieve drift velocity
1033 // The pad row (z-direction)
1034 Int_t rowE = padPlane->GetPadRowNumberROC(loc[1]);
1035 if (rowE < 0) {
1036 continue;
1037 }
1038 Double_t rowOffset = padPlane->GetPadRowOffsetROC(rowE,loc[1]);
1039 // The pad column (rphi-direction)
1040 Double_t offsetTilt = padPlane->GetTiltOffset(rowOffset);
1041 Int_t colE = padPlane->GetPadColNumber(loc[0]+offsetTilt);
1042 if (colE < 0) {
1043 continue;
1044 }
0a17cc30 1045 Double_t colOffset = 0.0;
f881dc35 1046
625f5260 1047 // Normalized drift length
1048 Float_t driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1049 Double_t absdriftlength = TMath::Abs(driftlength);
1050 if (commonParam->ExBOn()) {
1051 absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
1052 }
1053
1054 // Loop over all electrons of this hit
1055 // TR photons produce hits with negative charge
1056 Int_t nEl = ((Int_t) TMath::Abs(q));
1057 for (Int_t iEl = 0; iEl < nEl; iEl++) {
1058
1059 // Now the real local coordinate system of the ROC
1060 // column direction: locC
1061 // row direction: locR
1062 // time direction: locT
1063 // locR and locC are identical to the coordinates of the corresponding
1064 // volumina of the drift or amplification region.
1065 // locT is defined relative to the wire plane (i.e. middle of amplification
1066 // region), meaming locT = 0, and is negative for hits coming from the
1067 // drift region.
1068 Double_t locC = loc[0];
1069 Double_t locR = loc[1];
1070 Double_t locT = loc[2];
1071
1072 // Electron attachment
1073 if (simParam->ElAttachOn()) {
1074 if (gRandom->Rndm() < (absdriftlength * elAttachProp)) {
1075 continue;
f881dc35 1076 }
625f5260 1077 }
1078
1079 // Apply the diffusion smearing
1080 if (simParam->DiffusionOn()) {
1081 if (!(Diffusion(driftvelocity,absdriftlength,locR,locC,locT))) {
1082 continue;
f881dc35 1083 }
f881dc35 1084 }
793ff80c 1085
625f5260 1086 // Apply E x B effects (depends on drift direction)
1087 if (commonParam->ExBOn()) {
1088 if (!(ExB(driftvelocity,driftlength,locC))) {
4329977a 1089 continue;
1090 }
729161c5 1091 }
1092
625f5260 1093 // The electron position after diffusion and ExB in pad coordinates.
4329977a 1094 // The pad row (z-direction)
625f5260 1095 rowE = padPlane->GetPadRowNumberROC(locR);
1096 if (rowE < 0) continue;
1097 rowOffset = padPlane->GetPadRowOffsetROC(rowE,locR);
4329977a 1098
1099 // The pad column (rphi-direction)
625f5260 1100 offsetTilt = padPlane->GetTiltOffset(rowOffset);
1101 colE = padPlane->GetPadColNumber(locC+offsetTilt);
1102 if (colE < 0) continue;
1103 colOffset = padPlane->GetPadColOffset(colE,locC+offsetTilt);
eb52b657 1104
625f5260 1105 // Also re-retrieve drift velocity because col and row may have changed
1106 driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1107 Float_t t0 = calT0DetValue + calT0ROC->GetValue(colE,rowE);
1108
1109 // Convert the position to drift time [mus], using either constant drift velocity or
1110 // time structure of drift cells (non-isochronity, GARFIELD calculation).
1111 // Also add absolute time of hits to take pile-up events into account properly
1112 Double_t drifttime;
1113 if (simParam->TimeStructOn()) {
1114 // Get z-position with respect to anode wire
1115 Double_t zz = row0 - locR + simParam->GetAnodeWireOffset();
1116 zz -= ((Int_t)(2 * zz)) / 2.0;
1117 if (zz > 0.25) {
1118 zz = 0.5 - zz;
1119 }
1120 // Use drift time map (GARFIELD)
1121 drifttime = TimeStruct(driftvelocity,0.5*kAmWidth-1.0*locT,zz)
1122 + hittime;
1123 }
1124 else {
1125 // Use constant drift velocity
1126 drifttime = -1.0 * locT / driftvelocity
1127 + hittime;
4329977a 1128 }
625f5260 1129
1130 // Apply the gas gain including fluctuations
1131 Double_t ggRndm = 0.0;
1132 do {
1133 ggRndm = gRandom->Rndm();
1134 } while (ggRndm <= 0);
eb52b657 1135 Double_t signal = -(simParam->GetGasGain()) * TMath::Log(ggRndm);
625f5260 1136
1137 // Apply the pad response
1138 if (simParam->PRFOn()) {
1139 // The distance of the electron to the center of the pad
1140 // in units of pad width
1141 Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
1142 / padPlane->GetColSize(colE);
1143 // This is a fixed parametrization, i.e. not dependent on
1144 // calibration values !
053767a4 1145 if (!(calibration->PadResponse(signal,dist,layer,padSignal))) continue;
625f5260 1146 }
1147 else {
1148 padSignal[0] = 0.0;
1149 padSignal[1] = signal;
1150 padSignal[2] = 0.0;
4329977a 1151 }
f881dc35 1152
625f5260 1153 // The time bin (always positive), with t0 distortion
1154 Double_t timeBinIdeal = drifttime * samplingRate + t0;
1155 // Protection
1156 if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
1157 timeBinIdeal = 2 * nTimeTotal;
1158 }
1159 Int_t timeBinTruncated = ((Int_t) timeBinIdeal);
1160 // The distance of the position to the middle of the timebin
1161 Double_t timeOffset = ((Float_t) timeBinTruncated
1162 + 0.5 - timeBinIdeal) / samplingRate;
3551db50 1163
625f5260 1164 // Sample the time response inside the drift region
1165 // + additional time bins before and after.
1166 // The sampling is done always in the middle of the time bin
1167 for (Int_t iTimeBin = TMath::Max(timeBinTruncated,0)
1168 ;iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal)
1169 ;iTimeBin++) {
1170
1171 // Apply the time response
1172 Double_t timeResponse = 1.0;
1173 Double_t crossTalk = 0.0;
1174 Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
1175 if (simParam->TRFOn()) {
1176 timeResponse = simParam->TimeResponse(time);
f881dc35 1177 }
625f5260 1178 if (simParam->CTOn()) {
1179 crossTalk = simParam->CrossTalk(time);
f881dc35 1180 }
e23fbb27 1181
625f5260 1182 signalOld[0] = 0.0;
1183 signalOld[1] = 0.0;
1184 signalOld[2] = 0.0;
e23fbb27 1185
625f5260 1186 for (iPad = 0; iPad < kNpad; iPad++) {
f7336fa3 1187
625f5260 1188 Int_t colPos = colE + iPad - 1;
1189 if (colPos < 0) continue;
1190 if (colPos >= nColMax) break;
e23fbb27 1191
625f5260 1192 // Add the signals
1193 signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iTimeBin);
e23fbb27 1194
625f5260 1195 if (colPos != colE) {
1196 // Cross talk added to non-central pads
1197 signalOld[iPad] += padSignal[iPad]
1198 * (timeResponse + crossTalk);
1199 }
1200 else {
1201 // W/o cross talk at central pad
1202 signalOld[iPad] += padSignal[iPad]
1203 * timeResponse;
1204 }
f881dc35 1205
625f5260 1206 signals->SetDataUnchecked(rowE,colPos,iTimeBin,signalOld[iPad]);
1207
1208 // Store the track index in the dictionary
1209 // Note: We store index+1 in order to allow the array to be compressed
1210 if (signalOld[iPad] > 0.0) {
1211 for (dict = 0; dict < kNdict; dict++) {
1212 Int_t oldTrack = dictionary[dict]->GetDataUnchecked(rowE
1213 ,colPos
1214 ,iTimeBin);
1215 if (oldTrack == track+1) break;
1216 if (oldTrack == 0) {
1217 dictionary[dict]->SetDataUnchecked(rowE,colPos,iTimeBin,track+1);
1218 break;
71d9fa7b 1219 }
f881dc35 1220 }
625f5260 1221 }
872a7aba 1222
625f5260 1223 } // Loop: pads
f7336fa3 1224
625f5260 1225 } // Loop: time bins
f7336fa3 1226
625f5260 1227 } // Loop: electrons of a single hit
f7336fa3 1228
625f5260 1229 } // Loop: hits
f7336fa3 1230
625f5260 1231 AliDebug(2,Form("Finished analyzing %d hits",nhit));
e23fbb27 1232
625f5260 1233 return kTRUE;
e23fbb27 1234
625f5260 1235}
793ff80c 1236
625f5260 1237//_____________________________________________________________________________
1238Bool_t AliTRDdigitizer::ConvertSignals(Int_t det, AliTRDdataArrayF *signals)
1239{
4329977a 1240 //
625f5260 1241 // Convert signals to digits
4329977a 1242 //
1243
625f5260 1244 AliDebug(1,Form("Start converting the signals for detector %d",det));
1245
1246 if (fSDigits) {
1247 // Convert the signal array to s-digits
1248 if (!Signal2SDigits(det,signals)) {
1249 return kFALSE;
793ff80c 1250 }
625f5260 1251 }
1252 else {
1253 // Convert the signal array to digits
1254 if (!Signal2ADC(det,signals)) {
1255 return kFALSE;
793ff80c 1256 }
625f5260 1257 }
f7336fa3 1258
625f5260 1259 // Compress the arrays
1260 CompressOutputArrays(det);
6244debe 1261
625f5260 1262 return kTRUE;
6244debe 1263
625f5260 1264}
4329977a 1265
625f5260 1266//_____________________________________________________________________________
1267Bool_t AliTRDdigitizer::Signal2ADC(Int_t det, AliTRDdataArrayF *signals)
1268{
1269 //
1270 // Converts the sampled electron signals to ADC values for a given chamber
1271 //
6244debe 1272
625f5260 1273 AliDebug(1,Form("Start converting signals to ADC values for detector=%d",det));
e23fbb27 1274
625f5260 1275 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1276 if (!calibration) {
1277 AliFatal("Could not get calibration object");
1278 return kFALSE;
1279 }
793ff80c 1280
625f5260 1281 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
1282 if (!simParam) {
1283 AliFatal("Could not get simulation parameters");
1284 return kFALSE;
1285 }
f7336fa3 1286
625f5260 1287 // Converts number of electrons to fC
1288 const Double_t kEl2fC = 1.602e-19 * 1.0e15;
0c24ba98 1289
625f5260 1290 // Coupling factor
1291 Double_t coupling = simParam->GetPadCoupling()
1292 * simParam->GetTimeCoupling();
1293 // Electronics conversion factor
1294 Double_t convert = kEl2fC
1295 * simParam->GetChipGain();
1296 // ADC conversion factor
1297 Double_t adcConvert = simParam->GetADCoutRange()
1298 / simParam->GetADCinRange();
1299 // The electronics baseline in mV
1300 Double_t baseline = simParam->GetADCbaseline()
1301 / adcConvert;
1302 // The electronics baseline in electrons
1303 Double_t baselineEl = baseline
1304 / convert;
1305
1306 Int_t row = 0;
1307 Int_t col = 0;
1308 Int_t time = 0;
1309
1310 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1311 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1312 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
abaf1f1d 1313
625f5260 1314 // The gainfactor calibration objects
1315 const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
1316 AliTRDCalROC *calGainFactorROC = 0;
1317 Float_t calGainFactorDetValue = 0.0;
f7336fa3 1318
625f5260 1319 AliTRDdataArrayS *digits = 0x0;
e23fbb27 1320
625f5260 1321 if (!signals) {
1322 AliError(Form("Signals array for detector %d does not exist\n",det));
1323 return kFALSE;
1324 }
1325 if (signals->HasData()) {
1326 // Expand the container if neccessary
1327 signals->Expand();
1328 }
1329 else {
1330 // Create missing containers
1331 signals->Allocate(nRowMax,nColMax,nTimeTotal);
f7336fa3 1332 }
1333
625f5260 1334 // Get the container for the digits of this detector
1335 if (fDigitsManager->HasSDigits()) {
1336 AliError("Digits manager has s-digits");
1337 return kFALSE;
1338 }
1339 digits = (AliTRDdataArrayS *) fDigitsManager->GetDigits(det);
1340 // Allocate memory space for the digits buffer
1341 if (!digits->HasData()) {
1342 digits->Allocate(nRowMax,nColMax,nTimeTotal);
0c24ba98 1343 }
1344
625f5260 1345 // Get the calibration objects
1346 calGainFactorROC = calibration->GetGainFactorROC(det);
1347 calGainFactorDetValue = calGainFactorDet->GetValue(det);
abaf1f1d 1348
625f5260 1349 // Create the digits for this chamber
1350 for (row = 0; row < nRowMax; row++ ) {
1351 for (col = 0; col < nColMax; col++ ) {
abaf1f1d 1352
625f5260 1353 // Check whether pad is masked
1354 // Bridged pads are not considered yet!!!
1355 if (calibration->IsPadMasked(det,col,row)) {
1356 continue;
1357 }
abaf1f1d 1358
625f5260 1359 // The gain factors
1360 Float_t padgain = calGainFactorDetValue
1361 * calGainFactorROC->GetValue(col,row);
1362 if (padgain <= 0) {
1363 AliError(Form("Not a valid gain %f, %d %d %d",padgain,det,col,row));
1364 }
abaf1f1d 1365
625f5260 1366 for (time = 0; time < nTimeTotal; time++) {
1367
1368 // Get the signal amplitude
1369 Float_t signalAmp = signals->GetDataUnchecked(row,col,time);
1370 // Pad and time coupling
1371 signalAmp *= coupling;
1372 // Gain factors
1373 signalAmp *= padgain;
1374
1375 // Add the noise, starting from minus ADC baseline in electrons
1376 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
1377 ,-baselineEl);
1378
1379 // Convert to mV
1380 signalAmp *= convert;
1381 // Add ADC baseline in mV
1382 signalAmp += baseline;
1383
1384 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
1385 // signal is larger than fADCinRange
1386 Short_t adc = 0;
1387 if (signalAmp >= simParam->GetADCinRange()) {
1388 adc = ((Short_t) simParam->GetADCoutRange());
1389 }
1390 else {
1391 adc = TMath::Nint(signalAmp * adcConvert);
1392 }
abaf1f1d 1393
625f5260 1394 // Store the amplitude of the digit if above threshold
1395 //if (adc != 0) {
1396 // Use temporarily a threshold to reduce the digits file size
1397 if (adc > (simParam->GetADCbaseline() + 2)) {
1398 digits->SetDataUnchecked(row,col,time,adc);
1399 }
abaf1f1d 1400
625f5260 1401 } // for: time
1402 } // for: col
1403 } // for: row
b1113c6b 1404
625f5260 1405 return kTRUE;
b1113c6b 1406
1407}
1408
abaf1f1d 1409//_____________________________________________________________________________
625f5260 1410Bool_t AliTRDdigitizer::Signal2SDigits(Int_t det, AliTRDdataArrayF *signals)
abaf1f1d 1411{
1412 //
625f5260 1413 // Converts the sampled electron signals to s-digits
abaf1f1d 1414 //
1415
625f5260 1416 AliDebug(1,Form("Start converting signals to s-digits for detector=%d",det));
abaf1f1d 1417
4329977a 1418 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1419 if (!calibration) {
4329977a 1420 AliFatal("Could not get calibration object");
3551db50 1421 return kFALSE;
1422 }
6bf5f0ce 1423
625f5260 1424 Int_t row = 0;
1425 Int_t col = 0;
1426 Int_t time = 0;
9afbd7de 1427
625f5260 1428 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1429 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1430 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
e23fbb27 1431
625f5260 1432 // Get the container for the digits of this detector
1433 if (!fDigitsManager->HasSDigits()) {
1434 AliError("Digits manager has no s-digits");
1435 return kFALSE;
1436 }
1437 AliTRDdataArrayF *digits = (AliTRDdataArrayF *) fDigitsManager->GetDigits(det);
1438 // Allocate memory space for the digits buffer
1439 if (!digits->HasData()) {
1440 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1441 }
e23fbb27 1442
625f5260 1443 // Create the sdigits for this chamber
1444 for (row = 0; row < nRowMax; row++ ) {
1445 for (col = 0; col < nColMax; col++ ) {
1446 for (time = 0; time < nTimeTotal; time++) {
1447 digits->SetDataUnchecked(row
1448 ,col
1449 ,time
1450 ,signals->GetDataUnchecked(row,col,time));
1451 } // for: time
1452 } // for: col
1453 } // for: row
6bf5f0ce 1454
625f5260 1455 return kTRUE;
abaf1f1d 1456
625f5260 1457}
abaf1f1d 1458
625f5260 1459//_____________________________________________________________________________
1460Bool_t AliTRDdigitizer::SDigits2Digits()
1461{
1462 //
1463 // Merges the input s-digits and converts them to normal digits
1464 //
e23fbb27 1465
625f5260 1466 if (!MergeSDigits()) {
1467 return kFALSE;
1468 }
f7336fa3 1469
625f5260 1470 return ConvertSDigits();
f7336fa3 1471
1472}
1473
16bf9884 1474//_____________________________________________________________________________
abaf1f1d 1475Bool_t AliTRDdigitizer::MergeSDigits()
16bf9884 1476{
1477 //
abaf1f1d 1478 // Merges the input s-digits:
1479 // - The amplitude of the different inputs are summed up.
1480 // - Of the track IDs from the input dictionaries only one is
1481 // kept for each input. This works for maximal 3 different merged inputs.
16bf9884 1482 //
1483
abaf1f1d 1484 // Number of track dictionary arrays
1485 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1486
4d18a639 1487 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 1488 if (!simParam) {
4329977a 1489 AliFatal("Could not get simulation parameters");
3551db50 1490 return kFALSE;
1491 }
1492
4d18a639 1493 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1494 if (!calibration) {
4329977a 1495 AliFatal("Could not get calibration object");
3551db50 1496 return kFALSE;
1497 }
1498
abaf1f1d 1499 Int_t iDict = 0;
e23fbb27 1500 Int_t jDict = 0;
abaf1f1d 1501
625f5260 1502 AliTRDdataArrayF *digitsA;
1503 AliTRDdataArrayF *digitsB;
1504 AliTRDdataArrayI *dictionaryA[kNDict];
1505 AliTRDdataArrayI *dictionaryB[kNDict];
1506 AliTRDdigitsManager *mergeSDigitsManager = 0x0;
abaf1f1d 1507
1508 // Get the first s-digits
1509 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
9afbd7de 1510 if (!fSDigitsManager) {
7925de54 1511 AliError("No SDigits manager");
9afbd7de 1512 return kFALSE;
1513 }
abaf1f1d 1514
1515 // Loop through the other sets of s-digits
4d18a639 1516 mergeSDigitsManager = (AliTRDdigitsManager *)
1517 fSDigitsManagerList->After(fSDigitsManager);
abaf1f1d 1518
9afbd7de 1519 if (mergeSDigitsManager) {
7925de54 1520 AliDebug(1,Form("Merge %d input files.",fSDigitsManagerList->GetSize()));
9afbd7de 1521 }
1522 else {
7925de54 1523 AliDebug(1,"Only one input file.");
abaf1f1d 1524 }
1525
3551db50 1526 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1527
abaf1f1d 1528 Int_t iMerge = 0;
1529 while (mergeSDigitsManager) {
1530
1531 iMerge++;
1532
1533 // Loop through the detectors
1534 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1535
625f5260 1536 Int_t nRowMax = fGeo->GetPadPlane(iDet)->GetNrows();
1537 Int_t nColMax = fGeo->GetPadPlane(iDet)->GetNcols();
abaf1f1d 1538
1539 // Loop through the pixels of one detector and add the signals
625f5260 1540 digitsA = (AliTRDdataArrayF *) fSDigitsManager->GetDigits(iDet);
1541 digitsB = (AliTRDdataArrayF *) mergeSDigitsManager->GetDigits(iDet);
abaf1f1d 1542 digitsA->Expand();
f43f5dd2 1543 if (!digitsA->GetDataSize()) continue;
abaf1f1d 1544 digitsB->Expand();
f43f5dd2 1545 if (!digitsB->GetDataSize()) continue;
abaf1f1d 1546 for (iDict = 0; iDict < kNDict; iDict++) {
625f5260 1547 dictionaryA[iDict] = (AliTRDdataArrayI *) fSDigitsManager->GetDictionary(iDet,iDict);
1548 dictionaryB[iDict] = (AliTRDdataArrayI *) mergeSDigitsManager->GetDictionary(iDet,iDict);
abaf1f1d 1549 dictionaryA[iDict]->Expand();
1550 dictionaryB[iDict]->Expand();
1551 }
1552
4487dad0 1553 // Merge only detectors that contain a signal
1554 Bool_t doMerge = kTRUE;
1555 if (fMergeSignalOnly) {
1556 if (digitsA->GetOverThreshold(0) == 0) {
1557 doMerge = kFALSE;
1558 }
abaf1f1d 1559 }
1560
4487dad0 1561 if (doMerge) {
abaf1f1d 1562
7925de54 1563 AliDebug(1,Form("Merge detector %d of input no.%d",iDet,iMerge+1));
abaf1f1d 1564
4487dad0 1565 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1566 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1567 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1568
1569 // Add the amplitudes of the summable digits
625f5260 1570 Float_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime);
1571 Float_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime);
4487dad0 1572 ampA += ampB;
1573 digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA);
1574
9afbd7de 1575 // Add the mask to the track id if defined.
4487dad0 1576 for (iDict = 0; iDict < kNDict; iDict++) {
1577 Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1578 if ((fMasks) && (trackB > 0)) {
1579 for (jDict = 0; jDict < kNDict; jDict++) {
1580 Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1581 if (trackA == 0) {
1582 trackA = trackB + fMasks[iMerge];
1583 dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA);
625f5260 1584 } // if: track A == 0
1585 } // for: jDict
1586 } // if: fMasks and trackB > 0
1587 } // for: iDict
abaf1f1d 1588
625f5260 1589 } // for: iTime
1590 } // for: iCol
1591 } // for: iRow
4487dad0 1592
625f5260 1593 } // if: doMerge
1594
1595 mergeSDigitsManager->RemoveDigits(iDet);
1596 mergeSDigitsManager->RemoveDictionaries(iDet);
abaf1f1d 1597
1598 if (fCompress) {
1599 digitsA->Compress(1,0);
abaf1f1d 1600 for (iDict = 0; iDict < kNDict; iDict++) {
1601 dictionaryA[iDict]->Compress(1,0);
abaf1f1d 1602 }
1603 }
1604
625f5260 1605 } // for: detectors
abaf1f1d 1606
1607 // The next set of s-digits
4d18a639 1608 mergeSDigitsManager = (AliTRDdigitsManager *)
1609 fSDigitsManagerList->After(mergeSDigitsManager);
abaf1f1d 1610
625f5260 1611 } // while: mergeDigitsManagers
1612
1613 return kTRUE;
1614
1615}
1616
1617//_____________________________________________________________________________
1618Bool_t AliTRDdigitizer::ConvertSDigits()
1619{
1620 //
1621 // Converts s-digits to normal digits
1622 //
1623
1624 AliTRDdataArrayF *digitsIn = 0x0;
1625
1626 if (!fSDigitsManager->HasSDigits()) {
1627 AliError("No s-digits in digits manager");
1628 return kFALSE;
abaf1f1d 1629 }
1630
625f5260 1631 // Loop through the detectors
1632 for (Int_t det = 0; det < AliTRDgeometry::Ndet(); det++) {
1633
1634 // Get the merged s-digits (signals)
1635 digitsIn = (AliTRDdataArrayF *) fSDigitsManager->GetDigits(det);
1636 if (!digitsIn->HasData()) {
1637 AliDebug(2,Form("No digits for det=%d",det));
1638 continue;
1639 }
1640
1641 // Convert the merged sdigits to digits
1642 if (!Signal2ADC(det,digitsIn)) {
1643 continue;
1644 }
1645
1646 // Copy the dictionary information to the output array
1647 if (!CopyDictionary(det)) {
1648 continue;
1649 }
1650
1651 // Delete
1652 fSDigitsManager->RemoveDigits(det);
1653 fSDigitsManager->RemoveDictionaries(det);
1654
1655 // Compress the arrays
1656 CompressOutputArrays(det);
1657
1658 } // for: detector numbers
1659
16bf9884 1660 return kTRUE;
1661
1662}
1663
abaf1f1d 1664//_____________________________________________________________________________
625f5260 1665Bool_t AliTRDdigitizer::CopyDictionary(Int_t det)
abaf1f1d 1666{
1667 //
625f5260 1668 // Copies the dictionary information from the s-digits arrays
1669 // to the output arrays
abaf1f1d 1670 //
1671
625f5260 1672 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1673 if (!calibration) {
1674 AliFatal("Could not get calibration object");
4d18a639 1675 return kFALSE;
1676 }
abaf1f1d 1677
625f5260 1678 AliDebug(1,Form("Start copying dictionaries for detector=%d",det));
1679
1680 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1681 AliTRDdataArrayI *dictionaryIn[kNDict];
1682 AliTRDdataArrayI *dictionaryOut[kNDict];
1683
1684 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1685 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1686 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1687
1688 Int_t row = 0;
1689 Int_t col = 0;
1690 Int_t time = 0;
1691 Int_t dict = 0;
1692
1693 for (dict = 0; dict < kNDict; dict++) {
1694
1695 dictionaryIn[dict] = (AliTRDdataArrayI *) fSDigitsManager->GetDictionary(det,dict);
1696 dictionaryIn[dict]->Expand();
1697 dictionaryOut[dict] = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(det,dict);
1698 dictionaryOut[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
1699
1700 for (row = 0; row < nRowMax; row++) {
1701 for (col = 0; col < nColMax; col++) {
1702 for (time = 0; time < nTimeTotal; time++) {
1703
1704 Int_t track = dictionaryIn[dict]->GetDataUnchecked(row,col,time);
1705 dictionaryOut[dict]->SetDataUnchecked(row,col,time,track);
1706
1707 } // for: time
1708 } // for: col
1709 } // for: row
1710
1711 } // for: dictionaries
1712
1713 return kTRUE;
1714
1715}
1716
1717//_____________________________________________________________________________
1718void AliTRDdigitizer::CompressOutputArrays(Int_t det)
1719{
1720 //
1721 // Compress the output arrays
1722 //
1723
1724 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1725
1726 AliTRDdataArrayS *digits = 0x0;
1727 AliTRDdataArrayI *dictionary = 0x0;
1728
1729 if (fCompress) {
1730
1731 digits = (AliTRDdataArrayS *) fDigitsManager->GetDigits(det);
1732 digits->Compress(1,0);
1733 for (Int_t dict = 0; dict < kNDict; dict++) {
1734 dictionary = (AliTRDdataArrayI *) fDigitsManager->GetDictionary(det,dict);
1735 dictionary->Compress(1,0);
1736
1737 }
1738
1739 }
abaf1f1d 1740
1741}
1742
f7336fa3 1743//_____________________________________________________________________________
0a29d0f1 1744Bool_t AliTRDdigitizer::WriteDigits() const
f7336fa3 1745{
1746 //
1747 // Writes out the TRD-digits and the dictionaries
1748 //
1749
4d18a639 1750 // Write parameters
bdbb05bb 1751 fRunLoader->CdGAFile();
bdbb05bb 1752
da581aea 1753 // Store the digits and the dictionary in the tree
abaf1f1d 1754 return fDigitsManager->WriteDigits();
f7336fa3 1755
1756}
793ff80c 1757
8e64dd77 1758//_____________________________________________________________________________
88cb7938 1759void AliTRDdigitizer::InitOutput(Int_t iEvent)
8e64dd77 1760{
1761 //
1762 // Initializes the output branches
1763 //
1764
1765 fEvent = iEvent;
88cb7938 1766
9afbd7de 1767 if (!fRunLoader) {
1768 AliError("Run Loader is NULL");
1769 return;
1770 }
1771
4329977a 1772 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 1773 if (!loader) {
1774 AliError("Can not get TRD loader from Run Loader");
1775 return;
1776 }
88cb7938 1777
4d18a639 1778 TTree *tree = 0;
88cb7938 1779
9afbd7de 1780 if (fSDigits) {
1781 // If we produce SDigits
88cb7938 1782 tree = loader->TreeS();
9afbd7de 1783 if (!tree) {
88cb7938 1784 loader->MakeTree("S");
1785 tree = loader->TreeS();
9afbd7de 1786 }
1787 }
1788 else {
1789 // If we produce Digits
1790 tree = loader->TreeD();
1791 if (!tree) {
1792 loader->MakeTree("D");
1793 tree = loader->TreeD();
1794 }
1795 }
1796
88cb7938 1797 fDigitsManager->SetEvent(iEvent);
1798 fDigitsManager->MakeBranch(tree);
8e64dd77 1799
1800}
3551db50 1801
1802//_____________________________________________________________________________
1803Double_t AliTRDdigitizer::TimeStruct(Float_t vdrift, Double_t dist, Double_t z)
1804{
1805 //
1806 // Applies the time structure of the drift cells (by C.Lippmann).
1807 // The drift time of electrons to the anode wires depends on the
1808 // distance to the wire (z) and on the position in the drift region.
1809 //
1810 // input :
1811 // dist = radial distance from (cathode) pad plane [cm]
1812 // z = distance from anode wire (parallel to cathode planes) [cm]
1813 //
1814 // output :
1815 // tdrift = the drift time of an electron at the given position
1816 //
1817 // We interpolate between the drift time values at the two drift
1818 // velocities fVDlo and fVDhi, being smaller and larger than
1819 // fDriftVelocity. We use the two stored drift time maps fTimeStruct1
1820 // and fTimeStruct2, calculated for the two mentioned drift velocities.
1821 //
1822
1823 SampleTimeStruct(vdrift);
1824
4d18a639 1825 // Indices:
1826 Int_t r1 = (Int_t)(10 * dist);
9afbd7de 1827 if (r1 < 0) r1 = 0;
1828 if (r1 > 37) r1 = 37;
1829 Int_t r2 = r1 + 1;
1830 if (r2 < 0) r2 = 0;
1831 if (r2 > 37) r2 = 37;
1832 const Int_t kz1 = ((Int_t)(100 * z / 2.5));
1833 const Int_t kz2 = kz1 + 1;
1834
4d18a639 1835 if ((r1 < 0) ||
1836 (r1 > 37) ||
1837 (kz1 < 0) ||
1838 (kz1 > 10)) {
7925de54 1839 AliWarning(Form("Indices out of range: dist=%.2f, z=%.2f, r1=%d, kz1=%d"
9afbd7de 1840 ,dist,z,r1,kz1));
3551db50 1841 }
1842
4d18a639 1843 const Float_t ky111 = fTimeStruct1[r1+38*kz1];
9afbd7de 1844 const Float_t ky221 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1845 ? fTimeStruct1[r2+38*kz2]
1846 : fTimeStruct1[37+38*10];
9afbd7de 1847 const Float_t ky121 = (kz2 <= 10)
4d18a639 1848 ? fTimeStruct1[r1+38*kz2]
1849 : fTimeStruct1[r1+38*10];
9afbd7de 1850 const Float_t ky211 = (r2 <= 37)
4d18a639 1851 ? fTimeStruct1[r2+38*kz1]
1852 : fTimeStruct1[37+38*kz1];
3551db50 1853
1854 // 2D Interpolation, lower drift time map
1855 const Float_t ky11 = (ky211-ky111)*10*dist + ky111 - (ky211-ky111)*r1;
1856 const Float_t ky21 = (ky221-ky121)*10*dist + ky121 - (ky221-ky121)*r1;
1857
4d18a639 1858 const Float_t ky112 = fTimeStruct2[r1+38*kz1];
9afbd7de 1859 const Float_t ky222 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1860 ? fTimeStruct2[r2+38*kz2]
1861 : fTimeStruct2[37+38*10];
9afbd7de 1862 const Float_t ky122 = (kz2 <= 10)
4d18a639 1863 ? fTimeStruct2[r1+38*kz2]
1864 : fTimeStruct2[r1+38*10];
9afbd7de 1865 const Float_t ky212 = (r2 <= 37)
4d18a639 1866 ? fTimeStruct2[r2+38*kz1]
1867 : fTimeStruct2[37+38*kz1];
3551db50 1868
1869 // 2D Interpolation, larger drift time map
1870 const Float_t ky12 = (ky212-ky112)*10*dist + ky112 - (ky212-ky112)*r1;
1871 const Float_t ky22 = (ky222-ky122)*10*dist + ky122 - (ky222-ky122)*r1;
1872
4d18a639 1873 // Dist now is the drift distance to the anode wires (negative if electrons are
3551db50 1874 // between anode wire plane and cathode pad plane)
9afbd7de 1875 dist -= AliTRDgeometry::AmThick() / 2.0;
3551db50 1876
1877 // Get the drift times for the drift velocities fVDlo and fVDhi
9afbd7de 1878 const Float_t ktdrift1 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1879 ? (ky21 - ky11) * 100 * z / 2.5 + ky11 - (ky21 - ky11) * kz1
1880 : 0.0;
1881 const Float_t ktdrift2 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1882 ? (ky22 - ky12) * 100 * z / 2.5 + ky12 - (ky22 - ky12) * kz1
1883 : 0.0;
3551db50 1884
1885 // 1D Interpolation between the values at fVDlo and fVDhi
4d18a639 1886 Float_t a = (ktdrift2 - ktdrift1)
1887 / (fVDhi - fVDlo);
1888 Float_t b = ktdrift2 - a * fVDhi;
3551db50 1889
3551db50 1890 return a * vdrift + b;
1891
1892}
1893
1894//_____________________________________________________________________________
1895void AliTRDdigitizer::SampleTimeStruct(Float_t vdrift)
1896{
1897 //
1898 // Samples the timing structure of a drift cell
1899 // Drift Time data calculated with Garfield (by C.Lippmann)
1900 //
1901
4329977a 1902 // Nothing to do
4d18a639 1903 if (vdrift == fTimeLastVdrift) {
3551db50 1904 return;
9afbd7de 1905 }
4d18a639 1906 fTimeLastVdrift = vdrift;
3551db50 1907
9afbd7de 1908 // Drift time maps are saved for some drift velocity values (in drift region):
3551db50 1909 Float_t fVDsmp[8];
1910 fVDsmp[0] = 1.032;
1911 fVDsmp[1] = 1.158;
1912 fVDsmp[2] = 1.299;
1913 fVDsmp[3] = 1.450;
1914 fVDsmp[4] = 1.610;
1915 fVDsmp[5] = 1.783;
1916 fVDsmp[6] = 1.959;
1917 fVDsmp[7] = 2.134;
1918
9afbd7de 1919 if (vdrift < fVDsmp[0]) {
7925de54 1920 AliWarning(Form("Drift Velocity too small (%.3f<%.3f)",vdrift,fVDsmp[0]));
3551db50 1921 vdrift = fVDsmp[0];
9afbd7de 1922 }
1923 else if (vdrift > fVDsmp[7]) {
7925de54 1924 AliWarning(Form("Drift Velocity too large (%.3f>%.3f)",vdrift,fVDsmp[6]));
3551db50 1925 vdrift = fVDsmp[7];
1926 }
1927
1928 const Int_t ktimebin = 38;
9afbd7de 1929 const Int_t kZbin = 11;
3551db50 1930
1931 // Garfield simulation at UD = -1500V; vd = 1.032cm/microsec, <driftfield> = 525V/cm
1932 Float_t time1500[ktimebin][kZbin] =
1933 {{0.09170, 0.09205, 0.09306, 0.09475, 0.09716, 0.10035,
1934 0.10445, 0.10993, 0.11838, 0.13986, 0.37858},
1935 {0.06588, 0.06626, 0.06739, 0.06926, 0.07186, 0.07524,
1936 0.07951, 0.08515, 0.09381, 0.11601, 0.35673},
1937 {0.03946, 0.04003, 0.04171, 0.04435, 0.04780, 0.05193,
1938 0.05680, 0.06306, 0.07290, 0.09873, 0.34748},
1939 {0.01151, 0.01283, 0.01718, 0.02282, 0.02880, 0.03479,
1940 0.04098, 0.04910, 0.06413, 0.10567, 0.36897},
1941 {0.01116, 0.01290, 0.01721, 0.02299, 0.02863, 0.03447,
1942 0.04074, 0.04984, 0.06839, 0.11625, 0.37277},
1943 {0.03919, 0.03974, 0.04131, 0.04380, 0.04703, 0.05102,
1944 0.05602, 0.06309, 0.07651, 0.10938, 0.36838},
1945 {0.06493, 0.06560, 0.06640, 0.06802, 0.07051, 0.07392,
1946 0.07853, 0.08510, 0.09690, 0.12621, 0.38058},
1947 {0.09174, 0.09186, 0.09225, 0.09303, 0.09477, 0.00000,
1948 0.11205, 0.11952, 0.13461, 0.16984, 0.43017},
1949 {0.14356, 0.14494, 0.14959, 0.16002, 0.18328, 0.27981,
1950 0.22785, 0.21240, 0.21948, 0.25965, 0.52392},
1951 {0.23120, 0.23366, 0.24046, 0.25422, 0.28071, 0.36914,
1952 0.32999, 0.31208, 0.31772, 0.35804, 0.62249},
1953 {0.32686, 0.32916, 0.33646, 0.35053, 0.37710, 0.46292,
1954 0.42773, 0.40948, 0.41497, 0.45527, 0.71955},
1955 {0.42353, 0.42583, 0.43317, 0.44727, 0.47380, 0.55884,
1956 0.52479, 0.50650, 0.51194, 0.55225, 0.81658},
1957 {0.52038, 0.52271, 0.53000, 0.54415, 0.57064, 0.65545,
1958 0.62172, 0.60341, 0.60885, 0.64915, 0.91339},
1959 {0.61724, 0.61953, 0.62694, 0.64098, 0.66756, 0.75226,
1960 0.71862, 0.70030, 0.70575, 0.74604, 1.01035},
1961 {0.71460, 0.71678, 0.72376, 0.73786, 0.76447, 0.84913,
1962 0.81551, 0.79720, 0.80264, 0.84292, 1.10723},
1963 {0.81101, 0.81334, 0.82066, 0.83475, 0.86127, 0.94599,
1964 0.91240, 0.89408, 0.89952, 0.93981, 1.20409},
1965 {0.90788, 0.91023, 0.91752, 0.93163, 0.95815, 1.04293,
1966 1.00929, 0.99096, 0.99640, 1.03669, 1.30106},
1967 {1.00477, 1.00707, 1.01449, 1.02852, 1.05504, 1.13976,
1968 1.10617, 1.08784, 1.09329, 1.13358, 1.39796},
1969 {1.10166, 1.10397, 1.11130, 1.12541, 1.15257, 1.23672,
1970 1.20307, 1.18472, 1.19018, 1.23046, 1.49486},
1971 {1.19854, 1.20084, 1.20818, 1.22235, 1.24885, 1.33355,
1972 1.29992, 1.28156, 1.28707, 1.32735, 1.59177},
1973 {1.29544, 1.29780, 1.30507, 1.31917, 1.34575, 1.43073,
1974 1.39681, 1.37851, 1.38396, 1.42377, 1.68854},
1975 {1.39236, 1.39462, 1.40205, 1.41607, 1.44259, 1.52745,
1976 1.49368, 1.47541, 1.48083, 1.52112, 1.78546},
1977 {1.49314, 1.49149, 1.49885, 1.51297, 1.53949, 1.62420,
1978 1.59016, 1.57231, 1.57772, 1.61800, 1.88048},
1979 {1.58610, 1.58839, 1.59572, 1.60983, 1.63635, 1.72109,
1980 1.68651, 1.66921, 1.67463, 1.71489, 1.97918},
1981 {1.68400, 1.68529, 1.69261, 1.70671, 1.73331, 1.81830,
1982 1.78341, 1.76605, 1.77150, 1.81179, 2.07608},
1983 {1.77991, 1.78215, 1.78952, 1.80385, 1.83014, 1.91486,
1984 1.88128, 1.86215, 1.86837, 1.90865, 2.17304},
1985 {1.87674, 1.87904, 1.88647, 1.90052, 1.92712, 2.01173,
1986 1.97812, 1.95905, 1.96527, 2.00710, 2.26979},
1987 {1.97369, 1.97594, 1.98326, 1.99869, 2.02442, 2.10865,
1988 2.07501, 2.05666, 2.06214, 2.10243, 2.36669},
1989 {2.07052, 2.07281, 2.08016, 2.09425, 2.12132, 2.20555,
1990 2.17182, 2.15341, 2.15904, 2.19933, 2.46363},
1991 {2.16742, 2.16971, 2.17707, 2.19114, 2.21766, 2.30240,
1992 2.26877, 2.25015, 2.25573, 2.29586, 2.56060},
1993 {2.26423, 2.26659, 2.27396, 2.28803, 2.31456, 2.40828,
1994 2.36567, 2.34705, 2.35282, 2.39765, 2.65744},
1995 {2.36153, 2.36349, 2.37330, 2.38501, 2.41159, 2.49940,
1996 2.46257, 2.44420, 2.44843, 2.48987, 2.75431},
1997 {2.46558, 2.46035, 2.46822, 2.48181, 2.50849, 2.59630,
1998 2.55947, 2.54112, 2.54513, 2.58677, 2.85094},
1999 {2.56248, 2.55723, 2.56486, 2.57871, 2.60520, 2.68998,
2000 2.65626, 2.63790, 2.64316, 2.68360, 2.94813},
2001 {2.65178, 2.65441, 2.66153, 2.67556, 2.70210, 2.78687,
2002 2.75319, 2.73463, 2.74032, 2.78060, 3.04503},
2003 {2.74868, 2.75131, 2.75870, 2.77245, 2.79385, 2.88700,
2004 2.85009, 2.83177, 2.83723, 2.87750, 3.14193},
2005 {2.84574, 2.84789, 2.85560, 2.86935, 2.89075, 2.98060,
2006 2.94576, 2.92868, 2.93356, 2.97436, 3.23868},
2007 {2.94239, 2.94469, 2.95221, 2.96625, 2.99345, 3.07747,
2008 3.04266, 3.02545, 3.03051, 3.07118, 3.33555}};
2009
2010 // Garfield simulation at UD = -1600V; vd = 1.158cm/microsec, <driftfield> = 558V/cm
2011 Float_t time1600[ktimebin][kZbin] =
2012 {{0.09169, 0.09203, 0.09305, 0.09473, 0.09714, 0.10032,
2013 0.10441, 0.10990, 0.11835, 0.13986, 0.37845},
2014 {0.06589, 0.06626, 0.06738, 0.06924, 0.07184, 0.07521,
2015 0.07947, 0.08512, 0.09379, 0.11603, 0.35648},
2016 {0.03947, 0.04003, 0.04171, 0.04434, 0.04778, 0.05190,
2017 0.05678, 0.06304, 0.07292, 0.09876, 0.34759},
2018 {0.01111, 0.01281, 0.01718, 0.02281, 0.02879, 0.03477,
2019 0.04097, 0.04910, 0.06415, 0.10573, 0.36896},
2020 {0.01120, 0.01311, 0.01721, 0.02279, 0.02862, 0.03446,
2021 0.04074, 0.04981, 0.06825, 0.11595, 0.37255},
2022 {0.03919, 0.03980, 0.04132, 0.04380, 0.04704, 0.05102,
2023 0.05602, 0.06302, 0.07633, 0.10896, 0.36743},
2024 {0.06531, 0.06528, 0.06631, 0.06805, 0.07053, 0.07392,
2025 0.07853, 0.08505, 0.09669, 0.12578, 0.37967},
2026 {0.09157, 0.09171, 0.09216, 0.09301, 0.09475, 0.00000,
2027 0.11152, 0.11879, 0.13352, 0.16802, 0.42750},
2028 {0.13977, 0.14095, 0.14509, 0.15433, 0.17534, 0.26406,
2029 0.21660, 0.20345, 0.21113, 0.25067, 0.51434},
2030 {0.21816, 0.22041, 0.22631, 0.23850, 0.26208, 0.34340,
2031 0.30755, 0.29237, 0.29878, 0.33863, 0.60258},
2032 {0.30344, 0.30547, 0.31241, 0.32444, 0.34809, 0.42696,
2033 0.39464, 0.37919, 0.38546, 0.42530, 0.68926},
2034 {0.38969, 0.39164, 0.39810, 0.41059, 0.43441, 0.51246,
2035 0.48112, 0.46562, 0.47191, 0.51172, 0.77558},
2036 {0.47592, 0.47799, 0.48442, 0.49689, 0.52061, 0.59855,
2037 0.56752, 0.55201, 0.55826, 0.59808, 0.86202},
2038 {0.56226, 0.56428, 0.57074, 0.58324, 0.60696, 0.68483,
2039 0.65388, 0.63837, 0.64461, 0.68445, 0.94830},
2040 {0.64881, 0.65063, 0.65709, 0.66958, 0.69331, 0.77117,
2041 0.74023, 0.72472, 0.73098, 0.77079, 1.03486},
2042 {0.73506, 0.73698, 0.74344, 0.75596, 0.77964, 0.85751,
2043 0.82658, 0.81107, 0.81731, 0.85712, 1.12106},
2044 {0.82132, 0.82333, 0.82979, 0.84228, 0.86608, 0.94386,
2045 0.91293, 0.89742, 0.90367, 0.94335, 1.20737},
2046 {0.90767, 0.90968, 0.91614, 0.92863, 0.95236, 1.03021,
2047 0.99928, 0.98377, 0.99001, 1.02984, 1.29371},
2048 {0.99410, 0.99602, 1.00257, 1.01498, 1.03869, 1.11720,
2049 1.08563, 1.07011, 1.07637, 1.11621, 1.37873},
2050 {1.08036, 1.08240, 1.08884, 1.10138, 1.12504, 1.20301,
2051 1.17198, 1.15647, 1.16272, 1.20255, 1.46651},
2052 {1.16670, 1.16872, 1.17525, 1.18783, 1.21139, 1.28934,
2053 1.25833, 1.24281, 1.24909, 1.28889, 1.55275},
2054 {1.25307, 1.25510, 1.26153, 1.27404, 1.29773, 1.37584,
2055 1.34469, 1.32916, 1.33536, 1.37524, 1.63915},
2056 {1.33942, 1.34146, 1.34788, 1.36040, 1.38410, 1.46438,
2057 1.43105, 1.41537, 1.42176, 1.46158, 1.72538},
2058 {1.42579, 1.42782, 1.43458, 1.44674, 1.47043, 1.55085,
2059 1.51675, 1.50168, 1.50810, 1.54793, 1.81174},
2060 {1.51207, 1.51454, 1.52060, 1.53307, 1.55684, 1.63478,
2061 1.60336, 1.58820, 1.59446, 1.63414, 1.89814},
2062 {1.59856, 1.60047, 1.60693, 1.61942, 1.64317, 1.72257,
2063 1.69008, 1.67454, 1.68080, 1.72063, 1.98433},
2064 {1.68481, 1.68682, 1.69330, 1.70584, 1.72949, 1.80752,
2065 1.77643, 1.76089, 1.76716, 1.80692, 2.07069},
2066 {1.77117, 1.77319, 1.77969, 1.79260, 1.81583, 1.89376,
2067 1.86226, 1.84720, 1.85355, 1.89256, 2.15343},
2068 {1.85748, 1.85967, 1.86605, 1.87848, 1.90222, 1.98010,
2069 1.94913, 1.93271, 1.93981, 1.97968, 2.24355},
2070 {1.94386, 1.94587, 1.95233, 1.96484, 1.98854, 2.06646,
2071 2.03542, 2.01755, 2.02617, 2.06604, 2.32993},
2072 {2.03022, 2.03230, 2.03868, 2.05134, 2.07488, 2.15367,
2073 2.12178, 2.10391, 2.11252, 2.15432, 2.41623},
2074 {2.11656, 2.11857, 2.12505, 2.13772, 2.16147, 2.23919,
2075 2.20817, 2.19265, 2.20744, 2.23872, 2.49996},
2076 {2.20291, 2.20611, 2.21137, 2.22387, 2.24758, 2.32563,
2077 2.29450, 2.27901, 2.28525, 2.32507, 2.58897},
2078 {2.28922, 2.29172, 2.29774, 2.31345, 2.33400, 2.41287,
2079 2.38086, 2.36535, 2.37160, 2.40869, 2.67113},
2080 {2.37572, 2.37764, 2.38410, 2.39803, 2.42046, 2.49817,
2081 2.46721, 2.45171, 2.45794, 2.49505, 2.76061},
2082 {2.46190, 2.46396, 2.47043, 2.48340, 2.50665, 2.58453,
2083 2.55357, 2.53728, 2.54430, 2.58407, 2.84816},
2084 {2.54833, 2.55032, 2.55679, 2.56976, 2.59312, 2.67103,
2085 2.63993, 2.62364, 2.63062, 2.67040, 2.93444},
2086 {2.63456, 2.63660, 2.64304, 2.65555, 2.67938, 2.75739,
2087 2.72629, 2.71064, 2.71688, 2.75671, 3.01886}};
2088
2089 // Garfield simulation at UD = -1700V; vd = 1.299cm/microsec, <driftfield> = 590V/cm
2090 Float_t time1700[ktimebin][kZbin] =
2091 {{0.09167, 0.09201, 0.09302, 0.09471, 0.09712, 0.10029,
2092 0.10438, 0.10986, 0.11832, 0.13986, 0.37824},
2093 {0.06591, 0.06626, 0.06736, 0.06923, 0.07183, 0.07519,
2094 0.07944, 0.08511, 0.09378, 0.11603, 0.35625},
2095 {0.03946, 0.04003, 0.04170, 0.04433, 0.04777, 0.05189,
2096 0.05676, 0.06301, 0.07291, 0.09880, 0.34724},
2097 {0.01110, 0.01281, 0.01718, 0.02280, 0.02879, 0.03476,
2098 0.04096, 0.04910, 0.06417, 0.10582, 0.36861},
2099 {0.01115, 0.01294, 0.01721, 0.02276, 0.02862, 0.03447,
2100 0.04074, 0.04980, 0.06812, 0.11565, 0.37231},
2101 {0.03920, 0.03974, 0.04133, 0.04381, 0.04706, 0.05105,
2102 0.05603, 0.06299, 0.07618, 0.10860, 0.36646},
2103 {0.06498, 0.06529, 0.06634, 0.06808, 0.07055, 0.07395,
2104 0.07852, 0.08500, 0.09650, 0.12532, 0.37850},
2105 {0.09143, 0.09159, 0.09207, 0.09297, 0.09473, 0.00000,
2106 0.11102, 0.11809, 0.13245, 0.16627, 0.42496},
2107 {0.13646, 0.13750, 0.14112, 0.14926, 0.16806, 0.24960,
2108 0.20627, 0.19536, 0.20366, 0.24256, 0.50557},
2109 {0.20678, 0.20848, 0.21384, 0.22450, 0.24552, 0.32018,
2110 0.28740, 0.27477, 0.28196, 0.32128, 0.58475},
2111 {0.28287, 0.28461, 0.29020, 0.30108, 0.32224, 0.39467,
2112 0.36500, 0.35217, 0.35926, 0.39860, 0.66194},
2113 {0.35972, 0.36145, 0.36713, 0.37797, 0.39912, 0.47091,
2114 0.44212, 0.42925, 0.43632, 0.47563, 0.73892},
2115 {0.43667, 0.43841, 0.44413, 0.45494, 0.47607, 0.54780,
2116 0.51912, 0.50627, 0.51334, 0.55254, 0.81595},
2117 {0.51365, 0.51540, 0.52101, 0.53193, 0.55305, 0.62463,
2118 0.59617, 0.58328, 0.59035, 0.62965, 0.89303},
2119 {0.59064, 0.59240, 0.59801, 0.60893, 0.63009, 0.70169,
2120 0.67317, 0.66028, 0.66735, 0.70666, 0.96995},
2121 {0.66765, 0.66939, 0.67501, 0.68592, 0.70724, 0.77863,
2122 0.75016, 0.73728, 0.74435, 0.78366, 1.04696},
2123 {0.74464, 0.74636, 0.75200, 0.76293, 0.78405, 0.85561,
2124 0.82716, 0.81427, 0.82133, 0.86064, 1.12396},
2125 {0.82165, 0.82340, 0.82902, 0.83991, 0.86104, 0.93266,
2126 0.90414, 0.89128, 0.89834, 0.93763, 1.20100},
2127 {0.89863, 0.90042, 0.90659, 0.91705, 0.93805, 1.00960,
2128 0.98115, 0.96825, 0.97533, 1.01462, 1.27801},
2129 {0.97563, 0.97740, 0.98310, 0.99391, 1.01504, 1.08659,
2130 1.05814, 1.04526, 1.05233, 1.09163, 1.35503},
2131 {1.05276, 1.05451, 1.06002, 1.07090, 1.09099, 1.16357,
2132 1.13516, 1.12225, 1.12933, 1.16863, 1.43195},
2133 {1.12977, 1.13138, 1.13700, 1.14792, 1.16797, 1.24061,
2134 1.21212, 1.19926, 1.20626, 1.24554, 1.50900},
2135 {1.20664, 1.20839, 1.21400, 1.22490, 1.24606, 1.31772,
2136 1.28914, 1.27382, 1.28329, 1.32262, 1.58550},
2137 {1.28367, 1.28541, 1.29099, 1.30189, 1.32312, 1.39460,
2138 1.36612, 1.34924, 1.36030, 1.39961, 1.66310},
2139 {1.36064, 1.36249, 1.36799, 1.37896, 1.40004, 1.48030,
2140 1.44314, 1.43032, 1.43731, 1.47659, 1.73442},
2141 {1.43762, 1.43937, 1.44497, 1.45618, 1.47704, 1.54932,
2142 1.52012, 1.50725, 1.51430, 1.55357, 1.81708},
2143 {1.51462, 1.51937, 1.52203, 1.53316, 1.55403, 1.62572,
2144 1.59713, 1.58424, 1.59128, 1.63061, 1.89406},
2145 {1.59162, 1.59338, 1.59947, 1.60989, 1.63103, 1.70270,
2146 1.67411, 1.66124, 1.66799, 1.70759, 1.97103},
2147 {1.66874, 1.67037, 1.67597, 1.68687, 1.70814, 1.77969,
2148 1.75112, 1.73806, 1.74530, 1.78457, 2.04794},
2149 {1.74693, 1.74749, 1.75297, 1.76476, 1.78500, 1.85667,
2150 1.82811, 1.81504, 1.82101, 1.86161, 2.12492},
2151 {1.82260, 1.82437, 1.82995, 1.84174, 1.86202, 1.93372,
2152 1.90509, 1.89202, 1.89930, 1.93859, 2.20189},
2153 {1.89964, 1.90135, 1.90693, 1.91789, 1.93952, 2.01080,
2154 1.98207, 1.96921, 1.97628, 2.01384, 2.27887},
2155 {1.97662, 1.97917, 1.98611, 1.99487, 2.01601, 2.08778,
2156 2.05846, 2.04623, 2.05330, 2.09244, 2.35585},
2157 {2.05359, 2.05615, 2.06309, 2.07187, 2.09867, 2.16459,
2158 2.13610, 2.12322, 2.13029, 2.16942, 2.43199},
2159 {2.13063, 2.13233, 2.13795, 2.14886, 2.17008, 2.24199,
2160 2.21310, 2.20020, 2.20727, 2.24659, 2.50983},
2161 {2.20761, 2.20931, 2.21955, 2.22624, 2.24708, 2.32147,
2162 2.29009, 2.27725, 2.28276, 2.32359, 2.58680},
2163 {2.28459, 2.29108, 2.29202, 2.30286, 2.32007, 2.39559,
2164 2.36683, 2.35422, 2.36119, 2.40058, 2.66081},
2165 {2.36153, 2.36806, 2.36889, 2.37985, 2.40092, 2.47828,
2166 2.44381, 2.43099, 2.43819, 2.47750, 2.73779}};
2167
2168 // Garfield simulation at UD = -1800V; vd = 1.450cm/microsec, <driftfield> = 623V/cm
2169 Float_t time1800[ktimebin][kZbin] =
2170 {{0.09166, 0.09199, 0.09300, 0.09470, 0.09709, 0.10026,
2171 0.10434, 0.10983, 0.11831, 0.13987, 0.37802},
2172 {0.06585, 0.06623, 0.06735, 0.06921, 0.07180, 0.07520,
2173 0.07941, 0.08507, 0.09376, 0.11604, 0.35624},
2174 {0.03945, 0.04004, 0.04169, 0.04432, 0.04776, 0.05187,
2175 0.05674, 0.06300, 0.07290, 0.09884, 0.34704},
2176 {0.01108, 0.01287, 0.01717, 0.02280, 0.02880, 0.03476,
2177 0.04095, 0.04909, 0.06419, 0.10589, 0.36843},
2178 {0.01115, 0.01287, 0.01720, 0.02276, 0.02862, 0.03448,
2179 0.04073, 0.04973, 0.06799, 0.11535, 0.37224},
2180 {0.03918, 0.03975, 0.04134, 0.04382, 0.04707, 0.05105,
2181 0.05603, 0.06296, 0.07605, 0.10822, 0.36560},
2182 {0.06498, 0.06532, 0.06635, 0.06809, 0.07058, 0.07395,
2183 0.07855, 0.08495, 0.09632, 0.12488, 0.37730},
2184 {0.09130, 0.09160, 0.09199, 0.09300, 0.09472, 0.00000,
2185 0.11059, 0.11747, 0.13146, 0.16462, 0.42233},
2186 {0.13364, 0.13449, 0.13767, 0.14481, 0.16147, 0.23635,
2187 0.19706, 0.18812, 0.19704, 0.23520, 0.49749},
2188 {0.19698, 0.19844, 0.20311, 0.21236, 0.23082, 0.29920,
2189 0.26936, 0.25927, 0.26732, 0.30601, 0.56871},
2190 {0.26518, 0.26670, 0.27160, 0.28099, 0.29955, 0.36597,
2191 0.33885, 0.32858, 0.33653, 0.37524, 0.63801},
2192 {0.33441, 0.33553, 0.34040, 0.34987, 0.36841, 0.43428,
2193 0.40797, 0.39763, 0.40556, 0.44425, 0.70698},
2194 {0.40296, 0.40447, 0.40934, 0.41881, 0.43737, 0.50306,
2195 0.47695, 0.46662, 0.47455, 0.51329, 0.77600},
2196 {0.47296, 0.47344, 0.47830, 0.48779, 0.50632, 0.57200,
2197 0.54593, 0.53559, 0.54351, 0.58222, 0.84489},
2198 {0.54089, 0.54264, 0.54727, 0.55673, 0.57529, 0.64094,
2199 0.61490, 0.60457, 0.61249, 0.65118, 0.91394},
2200 {0.60987, 0.61138, 0.61624, 0.62573, 0.64428, 0.70989,
2201 0.68397, 0.67354, 0.68147, 0.72015, 0.98291},
2202 {0.67883, 0.68035, 0.68521, 0.69469, 0.71324, 0.77896,
2203 0.75287, 0.74251, 0.75043, 0.78912, 1.04458},
2204 {0.74780, 0.74932, 0.75421, 0.76367, 0.78221, 0.84785,
2205 0.82185, 0.81148, 0.81941, 0.85811, 1.12085},
2206 {0.81690, 0.81830, 0.82316, 0.83263, 0.85120, 0.91683,
2207 0.89077, 0.88045, 0.88837, 0.92707, 1.18976},
2208 {0.88574, 0.88726, 0.89228, 0.90198, 0.92017, 0.98578,
2209 0.95974, 0.94947, 0.95734, 0.99604, 1.25873},
2210 {0.95493, 0.95624, 0.96110, 0.97058, 0.98913, 1.05481,
2211 1.02873, 1.01839, 1.02631, 1.06503, 1.32772},
2212 {1.02392, 1.02524, 1.03008, 1.03955, 1.05810, 1.12378,
2213 1.09757, 1.08605, 1.09530, 1.13399, 1.39669},
2214 {1.09270, 1.09418, 1.09911, 1.10854, 1.12714, 1.19281,
2215 1.16502, 1.15633, 1.16427, 1.20271, 1.46574},
2216 {1.16168, 1.16323, 1.16801, 1.17772, 1.19604, 1.26190,
2217 1.23399, 1.22531, 1.23323, 1.27194, 1.53475},
2218 {1.23061, 1.23214, 1.23698, 1.24669, 1.26503, 1.33073,
2219 1.30461, 1.29428, 1.30220, 1.34091, 1.60372},
2220 {1.29960, 1.30110, 1.30596, 1.31544, 1.33398, 1.39962,
2221 1.37228, 1.36323, 1.37121, 1.40988, 1.67273},
2222 {1.36851, 1.37007, 1.37512, 1.38441, 1.40297, 1.46865,
2223 1.44256, 1.43222, 1.44017, 1.47878, 1.74155},
2224 {1.43752, 1.43904, 1.44773, 1.45338, 1.47220, 1.53759,
2225 1.51136, 1.50119, 1.50914, 1.54775, 1.81050},
2226 {1.50646, 1.50802, 1.51288, 1.52237, 1.54097, 1.60697,
2227 1.58049, 1.57018, 1.57811, 1.61678, 1.87947},
2228 {1.57545, 1.57720, 1.58185, 1.59134, 1.60996, 1.67787,
2229 1.64929, 1.63914, 1.64707, 1.68570, 1.94851},
2230 {1.64442, 1.64617, 1.65081, 1.66035, 1.67893, 1.74684,
2231 1.71826, 1.70745, 1.71604, 1.75310, 2.01748},
2232 {1.71337, 1.71513, 1.71978, 1.72932, 1.74645, 1.81346,
2233 1.78739, 1.77642, 1.78501, 1.82151, 2.08644},
2234 {1.78238, 1.78410, 1.78876, 1.79824, 1.81678, 1.88332,
2235 1.85639, 1.84262, 1.85397, 1.89270, 2.15533},
2236 {1.85135, 1.85306, 1.85778, 1.86728, 1.88580, 1.95615,
2237 1.92536, 1.91171, 1.92283, 1.96165, 2.22428},
2238 {1.92774, 1.92184, 1.92672, 1.93618, 1.95477, 2.02048,
2239 1.99427, 1.98068, 1.99192, 2.03062, 2.29338},
2240 {1.98929, 1.99081, 1.99567, 2.00515, 2.02373, 2.08987,
2241 2.06332, 2.05249, 2.05939, 2.09928, 2.36227},
2242 {2.05829, 2.05978, 2.06464, 2.07414, 2.09272, 2.15850,
2243 2.12928, 2.12194, 2.12987, 2.16825, 2.43083},
2244 {2.12726, 2.12869, 2.13360, 2.14425, 2.16160, 2.22872,
2245 2.20118, 2.19078, 2.19876, 2.23416, 2.50007}};
2246
2247 // Garfield simulation at UD = -1900V; vd = 1.610cm/microsec, <driftfield> = 655V/cm
2248 Float_t time1900[ktimebin][kZbin] =
2249 {{0.09166, 0.09198, 0.09298, 0.09467, 0.09707, 0.10023,
2250 0.10431, 0.10980, 0.11828, 0.13988, 0.37789},
2251 {0.06584, 0.06622, 0.06735, 0.06920, 0.07179, 0.07514,
2252 0.07938, 0.08505, 0.09374, 0.11606, 0.35599},
2253 {0.03945, 0.04002, 0.04169, 0.04432, 0.04775, 0.05185,
2254 0.05672, 0.06298, 0.07290, 0.09888, 0.34695},
2255 {0.01109, 0.01281, 0.01717, 0.02279, 0.02878, 0.03476,
2256 0.04094, 0.04909, 0.06421, 0.10597, 0.36823},
2257 {0.01115, 0.01287, 0.01720, 0.02294, 0.02862, 0.03448,
2258 0.04074, 0.04973, 0.06783, 0.11506, 0.37206},
2259 {0.03940, 0.03975, 0.04135, 0.04386, 0.04708, 0.05106,
2260 0.05604, 0.06293, 0.07592, 0.10787, 0.36484},
2261 {0.06500, 0.06534, 0.06638, 0.06811, 0.07060, 0.07413,
2262 0.07852, 0.08491, 0.09614, 0.12446, 0.37626},
2263 {0.09119, 0.09140, 0.09194, 0.09293, 0.09471, 0.00000,
2264 0.11013, 0.11685, 0.13050, 0.16302, 0.41991},
2265 {0.13111, 0.13190, 0.13466, 0.14091, 0.15554, 0.22409,
2266 0.18846, 0.18167, 0.19113, 0.22854, 0.48995},
2267 {0.18849, 0.18975, 0.19380, 0.20185, 0.21797, 0.28050,
2268 0.25368, 0.24575, 0.25446, 0.29249, 0.55442},
2269 {0.24995, 0.25125, 0.25563, 0.26366, 0.27986, 0.34065,
2270 0.31605, 0.30815, 0.31680, 0.35482, 0.61697},
2271 {0.31187, 0.31324, 0.31745, 0.32580, 0.34205, 0.40217,
2272 0.37825, 0.37031, 0.37897, 0.41696, 0.67890},
2273 {0.37401, 0.37531, 0.37955, 0.38777, 0.40395, 0.46408,
2274 0.44037, 0.43242, 0.44108, 0.47906, 0.74122},
2275 {0.43610, 0.43741, 0.44161, 0.44986, 0.46604, 0.52614,
2276 0.50248, 0.49452, 0.50316, 0.54116, 0.80326},
2277 {0.49820, 0.49988, 0.50372, 0.51196, 0.52814, 0.58822,
2278 0.56459, 0.55661, 0.56527, 0.60326, 0.86526},
2279 {0.56032, 0.56161, 0.56582, 0.57408, 0.59024, 0.65032,
2280 0.62670, 0.61872, 0.62737, 0.66537, 0.92749},
2281 {0.62240, 0.62371, 0.62792, 0.63624, 0.65236, 0.71241,
2282 0.68881, 0.68081, 0.68947, 0.72750, 0.98941},
2283 {0.68449, 0.68581, 0.69002, 0.69828, 0.71444, 0.77452,
2284 0.75089, 0.74295, 0.75157, 0.78957, 1.05157},
2285 {0.74660, 0.74790, 0.75212, 0.76036, 0.77654, 0.83748,
2286 0.81299, 0.80501, 0.81193, 0.85168, 1.11375},
2287 {0.80870, 0.81017, 0.81423, 0.82246, 0.83867, 0.89908,
2288 0.87509, 0.86660, 0.87577, 0.91376, 1.17586},
2289 {0.87080, 0.87233, 0.87632, 0.88458, 0.90074, 0.96083,
2290 0.93718, 0.92922, 0.93787, 0.97588, 1.23794},
2291 {0.93291, 0.93422, 0.93844, 0.94667, 0.96293, 1.02295,
2292 0.99929, 0.99127, 0.99997, 1.03797, 1.29995},
2293 {0.99500, 0.99645, 1.00308, 1.00877, 1.02497, 1.08504,
2294 1.06140, 1.05343, 1.06203, 1.10006, 1.36216},
2295 {1.05712, 1.05926, 1.06262, 1.07092, 1.08706, 1.14754,
2296 1.12350, 1.11550, 1.12417, 1.16218, 1.42427},
2297 {1.11921, 1.12059, 1.12473, 1.13297, 1.14916, 1.21140,
2298 1.18560, 1.17284, 1.18625, 1.22414, 1.48629},
2299 {1.18140, 1.18262, 1.18690, 1.19508, 1.21125, 1.27139,
2300 1.24164, 1.23495, 1.24838, 1.28634, 1.54852},
2301 {1.24340, 1.24473, 1.24901, 1.25732, 1.27336, 1.33358,
2302 1.30793, 1.30179, 1.31047, 1.34848, 1.61066},
2303 {1.30551, 1.30684, 1.31104, 1.32056, 1.33553, 1.39609,
2304 1.37004, 1.36392, 1.37045, 1.41057, 1.67259},
2305 {1.36755, 1.36892, 1.37315, 1.39148, 1.39755, 1.45820,
2306 1.43215, 1.42602, 1.43467, 1.47268, 1.73477},
2307 {1.42966, 1.43101, 1.43549, 1.45359, 1.45976, 1.52031,
2308 1.49601, 1.48811, 1.49677, 1.53477, 1.79691},
2309 {1.49180, 1.49321, 1.49760, 1.51570, 1.52175, 1.58185,
2310 1.55771, 1.55023, 1.55888, 1.59672, 1.85501},
2311 {1.55391, 1.55527, 1.55943, 1.57782, 1.58391, 1.64395,
2312 1.62008, 1.61233, 1.62085, 1.65883, 1.92091},
2313 {1.61599, 1.61732, 1.62154, 1.63993, 1.64612, 1.70608,
2314 1.68237, 1.67108, 1.68301, 1.72110, 1.97931},
2315 {1.67808, 1.67948, 1.68364, 1.70204, 1.70823, 1.76858,
2316 1.74404, 1.73539, 1.74512, 1.78321, 2.04522},
2317 {1.74019, 1.74152, 1.74573, 1.76415, 1.77015, 1.83040,
2318 1.80615, 1.79366, 1.80723, 1.84509, 2.10742},
2319 {1.80235, 1.80362, 1.80783, 1.82626, 1.83227, 1.89246,
2320 1.86795, 1.85405, 1.86938, 1.90720, 2.16953},
2321 {1.86442, 1.86572, 1.86994, 1.88837, 1.89438, 1.95445,
2322 1.93006, 1.92283, 1.93148, 1.96931, 2.23147},
2323 {1.92700, 1.92783, 1.93197, 1.95049, 1.95649, 2.01668,
2324 1.99217, 1.98486, 1.99352, 2.03143, 2.29358}};
2325
2326 // Garfield simulation at UD = -2000V; vd = 1.783cm/microsec, <driftfield> = 688V/cm
2327 Float_t time2000[ktimebin][kZbin] =
2328 {{0.09176, 0.09196, 0.09296, 0.09465, 0.09704, 0.10020,
2329 0.10427, 0.10977, 0.11825, 0.13988, 0.37774},
2330 {0.06583, 0.06620, 0.06735, 0.06918, 0.07177, 0.07513,
2331 0.07936, 0.08503, 0.09372, 0.11606, 0.35586},
2332 {0.03944, 0.04001, 0.04170, 0.04431, 0.04774, 0.05184,
2333 0.05670, 0.06296, 0.07291, 0.09893, 0.34680},
2334 {0.01108, 0.01281, 0.01719, 0.02279, 0.02879, 0.03474,
2335 0.04093, 0.04908, 0.06422, 0.10605, 0.36800},
2336 {0.01114, 0.01287, 0.01720, 0.02276, 0.02863, 0.03449,
2337 0.04073, 0.04970, 0.06774, 0.11478, 0.37179},
2338 {0.03925, 0.03977, 0.04135, 0.04386, 0.04711, 0.05108,
2339 0.05604, 0.06290, 0.07580, 0.10748, 0.36386},
2340 {0.06501, 0.06536, 0.06640, 0.06814, 0.07062, 0.07398,
2341 0.07852, 0.08487, 0.09598, 0.12405, 0.37519},
2342 {0.09109, 0.09127, 0.09188, 0.09292, 0.09472, 0.00000,
2343 0.10964, 0.11630, 0.12960, 0.16150, 0.41765},
2344 {0.12898, 0.12968, 0.13209, 0.13749, 0.15034, 0.21286,
2345 0.18088, 0.17590, 0.18591, 0.22254, 0.48315},
2346 {0.18122, 0.18227, 0.18574, 0.19263, 0.20674, 0.26376,
2347 0.23960, 0.23375, 0.24316, 0.28047, 0.54179},
2348 {0.23674, 0.23784, 0.24142, 0.24847, 0.26264, 0.31810,
2349 0.29602, 0.29008, 0.29944, 0.33675, 0.59795},
2350 {0.29279, 0.29382, 0.29742, 0.30448, 0.31865, 0.37364,
2351 0.35215, 0.34629, 0.35555, 0.39286, 0.65411},
2352 {0.34875, 0.34987, 0.35346, 0.36054, 0.37472, 0.42956,
2353 0.40825, 0.40229, 0.41167, 0.44894, 0.71033},
2354 {0.40484, 0.40594, 0.40954, 0.41660, 0.43077, 0.48560,
2355 0.46433, 0.45840, 0.46772, 0.50500, 0.76632},
2356 {0.46090, 0.46201, 0.46560, 0.47267, 0.48684, 0.54167,
2357 0.52041, 0.51449, 0.52382, 0.56108, 0.82227},
2358 {0.51698, 0.51809, 0.52173, 0.52874, 0.54291, 0.59776,
2359 0.57646, 0.57052, 0.57986, 0.61717, 0.87836},
2360 {0.57306, 0.57418, 0.57782, 0.58513, 0.59899, 0.65380,
2361 0.63255, 0.62661, 0.63594, 0.67325, 0.93460},
2362 {0.62912, 0.63024, 0.63383, 0.64103, 0.65506, 0.70988,
2363 0.68484, 0.68267, 0.69202, 0.72878, 0.99046},
2364 {0.68521, 0.68633, 0.68990, 0.69699, 0.71115, 0.76595,
2365 0.74468, 0.73872, 0.74814, 0.78538, 1.04674},
2366 {0.74127, 0.74239, 0.74605, 0.75303, 0.77022, 0.82204,
2367 0.80078, 0.79484, 0.80416, 0.84147, 1.10261},
2368 {0.79736, 0.79846, 0.80206, 0.80947, 0.82330, 0.87813,
2369 0.85688, 0.85087, 0.86023, 0.89752, 1.15874},
2370 {0.85342, 0.85454, 0.85815, 0.86519, 0.87936, 0.93417,
2371 0.91293, 0.90428, 0.91631, 0.95360, 1.20760},
2372 {0.90949, 0.91061, 0.91423, 0.92128, 0.93544, 0.99026,
2373 0.96807, 0.96305, 0.97239, 1.00967, 1.27078},
2374 {0.96556, 0.96669, 0.97111, 0.97734, 0.99151, 1.04664,
2375 1.02508, 1.01879, 1.02846, 1.06167, 1.32695},
2376 {1.02167, 1.02279, 1.02656, 1.03341, 1.04759, 1.10242,
2377 1.08115, 1.07003, 1.08453, 1.12184, 1.38304},
2378 {1.07776, 1.07883, 1.08242, 1.08950, 1.10384, 1.16422,
2379 1.13725, 1.13133, 1.14061, 1.17793, 1.43910},
2380 {1.13379, 1.13492, 1.13864, 1.14567, 1.15973, 1.21455,
2381 1.19323, 1.18734, 1.19668, 1.23401, 1.49528},
2382 {1.18988, 1.19098, 1.19457, 1.20164, 1.21582, 1.27064,
2383 1.24937, 1.24044, 1.25275, 1.29004, 1.55137},
2384 {1.24592, 1.24706, 1.25087, 1.25773, 1.27188, 1.32670,
2385 1.30544, 1.29953, 1.30883, 1.34613, 1.60743},
2386 {1.30202, 1.30313, 1.30673, 1.31381, 1.32797, 1.38278,
2387 1.36151, 1.35167, 1.36490, 1.40221, 1.66306},
2388 {1.35809, 1.35921, 1.36282, 1.36986, 1.38403, 1.43888,
2389 1.41760, 1.41174, 1.42083, 1.45830, 1.71915},
2390 {1.41419, 1.41528, 1.41890, 1.42595, 1.44011, 1.49496,
2391 1.47368, 1.46769, 1.47706, 1.51436, 1.77523},
2392 {1.47131, 1.47141, 1.47494, 1.48850, 1.49620, 1.55137,
2393 1.52977, 1.51820, 1.53315, 1.57042, 1.83158},
2394 {1.52635, 1.52750, 1.53103, 1.53814, 1.55228, 1.60736,
2395 1.58503, 1.57986, 1.58920, 1.62649, 1.88767},
2396 {1.58418, 1.58355, 1.58711, 1.59526, 1.60833, 1.66316,
2397 1.63345, 1.63261, 1.64556, 1.68204, 1.94359},
2398 {1.64027, 1.63958, 1.64489, 1.65024, 1.66443, 1.71925,
2399 1.69794, 1.69201, 1.70143, 1.73865, 1.99968},
2400 {1.69450, 1.69566, 1.69940, 1.70697, 1.71841, 1.77819,
2401 1.75396, 1.74814, 1.75743, 1.79083, 2.05427},
2402 {1.75054, 1.75221, 1.75527, 1.76306, 1.77662, 1.83428,
2403 1.81006, 1.81173, 1.81345, 1.85076, 2.10289}};
2404
2405 // Garfield simulation at UD = -2100V; vd = 1.959cm/microsec, <driftfield> = 720V/cm
2406 Float_t time2100[ktimebin][kZbin] =
2407 {{0.09160, 0.09194, 0.09294, 0.09462, 0.09701, 0.10017,
2408 0.10424, 0.10974, 0.11823, 0.13988, 0.37762},
2409 {0.06585, 0.06619, 0.06731, 0.06916, 0.07174, 0.07509,
2410 0.07933, 0.08500, 0.09370, 0.11609, 0.35565},
2411 {0.03960, 0.04001, 0.04171, 0.04430, 0.04774, 0.05182,
2412 0.05668, 0.06294, 0.07291, 0.09896, 0.34676},
2413 {0.01109, 0.01280, 0.01716, 0.02279, 0.02876, 0.03474,
2414 0.04096, 0.04908, 0.06424, 0.10612, 0.36790},
2415 {0.01114, 0.01285, 0.01719, 0.02287, 0.02863, 0.03449,
2416 0.04073, 0.04964, 0.06759, 0.11446, 0.37162},
2417 {0.03922, 0.03977, 0.04146, 0.04386, 0.04711, 0.05109,
2418 0.05605, 0.06287, 0.07575, 0.10713, 0.36298},
2419 {0.06504, 0.06538, 0.06641, 0.06818, 0.07064, 0.07426,
2420 0.07852, 0.08483, 0.09581, 0.12363, 0.37424},
2421 {0.09103, 0.09129, 0.09186, 0.09291, 0.09476, 0.00000,
2422 0.10923, 0.11578, 0.12873, 0.16005, 0.41525},
2423 {0.12723, 0.12777, 0.12988, 0.13458, 0.14579, 0.20264,
2424 0.17421, 0.17078, 0.18132, 0.21708, 0.47699},
2425 {0.17508, 0.17601, 0.17897, 0.18487, 0.19698, 0.24881,
2426 0.22737, 0.22337, 0.23348, 0.27000, 0.53032},
2427 {0.22571, 0.22663, 0.22969, 0.23570, 0.24787, 0.29826,
2428 0.27871, 0.27462, 0.28471, 0.32122, 0.58166},
2429 {0.27664, 0.27759, 0.28067, 0.28669, 0.29891, 0.34898,
2430 0.32982, 0.32570, 0.33576, 0.37229, 0.63268},
2431 {0.32766, 0.32862, 0.33170, 0.33778, 0.34988, 0.39973,
2432 0.38088, 0.37675, 0.38680, 0.42333, 0.68159},
2433 {0.37872, 0.37966, 0.38275, 0.38875, 0.40093, 0.45073,
2434 0.43192, 0.42780, 0.43786, 0.47438, 0.73480},
2435 {0.42974, 0.43070, 0.43378, 0.43982, 0.45196, 0.50177,
2436 0.48297, 0.47884, 0.48889, 0.52544, 0.78581},
2437 {0.48081, 0.48175, 0.48482, 0.49084, 0.50302, 0.55290,
2438 0.53398, 0.52988, 0.53994, 0.57647, 0.83687},
2439 {0.53645, 0.53295, 0.53586, 0.54188, 0.55408, 0.60398,
2440 0.58504, 0.58092, 0.59100, 0.62768, 0.88773},
2441 {0.58345, 0.58409, 0.58690, 0.59292, 0.60510, 0.65562,
2442 0.63609, 0.63197, 0.64203, 0.67856, 0.93907},
2443 {0.63397, 0.63490, 0.63795, 0.64403, 0.65613, 0.70612,
2444 0.68714, 0.68301, 0.69294, 0.72955, 0.99000},
2445 {0.68496, 0.68592, 0.68899, 0.69504, 0.70733, 0.75708,
2446 0.73818, 0.73405, 0.74412, 0.78064, 1.04100},
2447 {0.73600, 0.73696, 0.74003, 0.74624, 0.75828, 0.80805,
2448 0.78904, 0.78512, 0.79517, 0.83152, 1.09205},
2449 {0.78709, 0.78801, 0.79108, 0.79709, 0.80931, 0.85906,
2450 0.84027, 0.83614, 0.84621, 0.88269, 1.14058},
2451 {0.83808, 0.83905, 0.84215, 0.84816, 0.86031, 0.91011,
2452 0.89139, 0.88718, 0.89725, 0.93377, 1.19413},
2453 {0.88916, 0.89010, 0.89320, 0.89920, 0.91136, 0.96117,
2454 0.94235, 0.93822, 0.94828, 0.98480, 1.24538},
2455 {0.94036, 0.94113, 0.94422, 0.95023, 0.96241, 1.01220,
2456 0.99310, 0.98927, 0.99933, 1.03585, 1.29629},
2457 {0.99139, 0.99220, 0.99525, 1.00127, 1.01344, 1.06324,
2458 1.04451, 1.04033, 1.04836, 1.08690, 1.34727},
2459 {1.04261, 1.04325, 1.04628, 1.05232, 1.06448, 1.12090,
2460 1.09546, 1.09136, 1.10142, 1.13795, 1.39831},
2461 {1.09331, 1.09429, 1.09742, 1.10336, 1.11557, 1.16547,
2462 1.14658, 1.13642, 1.15247, 1.18898, 1.44936},
2463 {1.14436, 1.14539, 1.14847, 1.15443, 1.16662, 1.21794,
2464 1.19763, 1.19329, 1.20349, 1.23956, 1.50043},
2465 {1.19533, 1.19651, 1.19943, 1.20548, 1.21666, 1.26753,
2466 1.24862, 1.24434, 1.25455, 1.29106, 1.55142},
2467 {1.24638, 1.24756, 1.25046, 1.25648, 1.26764, 1.31858,
2468 1.29967, 1.29538, 1.30499, 1.34211, 1.60250},
2469 {1.29747, 1.29847, 1.30175, 1.30753, 1.31869, 1.36969,
2470 1.35069, 1.34656, 1.35663, 1.39316, 1.64644},
2471 {1.35537, 1.34952, 1.35255, 1.35869, 1.36973, 1.41387,
2472 1.40173, 1.39761, 1.40768, 1.44396, 1.70238},
2473 {1.39956, 1.40056, 1.40380, 1.40961, 1.42178, 1.46492,
2474 1.45278, 1.45423, 1.45872, 1.49522, 1.75557},
2475 {1.45080, 1.45159, 1.45463, 1.46109, 1.47287, 1.52263,
2476 1.50382, 1.50050, 1.50977, 1.54502, 1.80670},
2477 {1.50165, 1.50264, 1.50570, 1.51214, 1.52233, 1.57370,
2478 1.55484, 1.55155, 1.56080, 1.59731, 1.85778},
2479 {1.55269, 1.55364, 1.55675, 1.56274, 1.57491, 1.62598,
2480 1.60590, 1.60259, 1.61185, 1.64836, 1.90883},
2481 {1.60368, 1.60469, 1.60779, 1.61373, 1.62596, 1.67738,
2482 1.65651, 1.65249, 1.66290, 1.69936, 1.95959}};
2483
2484 // Garfield simulation at UD = -2200V; vd = 2.134cm/microsec, <driftfield> = 753V/cm
2485 Float_t time2200[ktimebin][kZbin] =
2486 {{0.09162, 0.09194, 0.09292, 0.09460, 0.09702, 0.10014,
2487 0.10421, 0.10971, 0.11820, 0.13990, 0.37745},
2488 {0.06581, 0.06618, 0.06730, 0.06915, 0.07173, 0.07507,
2489 0.07931, 0.08497, 0.09368, 0.11609, 0.35560},
2490 {0.03947, 0.04001, 0.04167, 0.04429, 0.04772, 0.05183,
2491 0.05667, 0.06293, 0.07292, 0.09900, 0.34673},
2492 {0.01111, 0.01280, 0.01716, 0.02279, 0.02876, 0.03473,
2493 0.04091, 0.04907, 0.06426, 0.10620, 0.36766},
2494 {0.01113, 0.01285, 0.01719, 0.02276, 0.02863, 0.03452,
2495 0.04076, 0.04960, 0.06745, 0.11419, 0.37139},
2496 {0.03923, 0.03978, 0.04137, 0.04387, 0.04713, 0.05110,
2497 0.05605, 0.06284, 0.07551, 0.10677, 0.36210},
2498 {0.06505, 0.06540, 0.06644, 0.06820, 0.07069, 0.07401,
2499 0.07852, 0.08479, 0.09565, 0.12325, 0.37313},
2500 {0.09107, 0.09127, 0.09181, 0.09291, 0.09474, 0.00000,
2501 0.10883, 0.11528, 0.12789, 0.15865, 0.41313},
2502 {0.12559, 0.12622, 0.12800, 0.13206, 0.14166, 0.19331,
2503 0.16832, 0.16632, 0.17724, 0.21218, 0.47098},
2504 {0.16992, 0.17070, 0.17325, 0.17831, 0.18871, 0.23557,
2505 0.21690, 0.21451, 0.22514, 0.26082, 0.52034},
2506 {0.21640, 0.21722, 0.21987, 0.22500, 0.23540, 0.28097,
2507 0.26399, 0.26154, 0.27214, 0.30784, 0.56734},
2508 {0.26318, 0.26400, 0.26679, 0.27181, 0.28220, 0.32739,
2509 0.31090, 0.30842, 0.31902, 0.35474, 0.61415},
2510 {0.31001, 0.31085, 0.31348, 0.31866, 0.32903, 0.37412,
2511 0.35777, 0.35546, 0.36588, 0.40159, 0.66103},
2512 {0.35687, 0.35769, 0.36033, 0.36556, 0.37588, 0.42094,
2513 0.40523, 0.40214, 0.41273, 0.44841, 0.70785},
2514 {0.40372, 0.40457, 0.40723, 0.41234, 0.42273, 0.46778,
2515 0.45148, 0.44903, 0.45961, 0.49526, 0.75486},
2516 {0.45062, 0.45139, 0.45404, 0.45966, 0.46958, 0.51470,
2517 0.49833, 0.49584, 0.50644, 0.54211, 0.80160},
2518 {0.49742, 0.49825, 0.50088, 0.50605, 0.51644, 0.56148,
2519 0.54518, 0.54270, 0.55330, 0.58897, 0.84854},
2520 {0.54427, 0.54510, 0.54774, 0.55290, 0.56329, 0.60846,
2521 0.59203, 0.58955, 0.60014, 0.63578, 0.89528},
2522 {0.59119, 0.59199, 0.59471, 0.59975, 0.61014, 0.65533,
2523 0.63889, 0.63636, 0.64699, 0.68269, 0.94197},
2524 {0.63866, 0.63880, 0.64145, 0.64664, 0.65701, 0.70639,
2525 0.68574, 0.68325, 0.69385, 0.72949, 0.98900},
2526 {0.68483, 0.68566, 0.68831, 0.69347, 0.70386, 0.74890,
2527 0.73260, 0.73010, 0.74069, 0.77638, 1.03320},
2528 {0.73168, 0.73255, 0.73515, 0.74031, 0.75072, 0.79576,
2529 0.77117, 0.77501, 0.78755, 0.82318, 1.08006},
2530 {0.77854, 0.78310, 0.78200, 0.79525, 0.79756, 0.84281,
2531 0.81803, 0.82393, 0.83441, 0.87008, 1.12692},
2532 {0.82541, 0.82642, 0.82916, 0.83528, 0.84442, 0.89086,
2533 0.87315, 0.87079, 0.88125, 0.91694, 1.17648},
2534 {0.87226, 0.87308, 0.87602, 0.88086, 0.89128, 0.93772,
2535 0.92001, 0.91751, 0.92811, 0.95587, 1.22328},
2536 {0.91921, 0.91994, 0.92256, 0.92772, 0.94713, 0.98566,
2537 0.96690, 0.96436, 0.97495, 1.01064, 1.26882},
2538 {0.96790, 0.96679, 0.96941, 0.97463, 0.99399, 1.03001,
2539 1.01376, 1.01112, 1.02181, 1.05749, 1.31568},
2540 {1.01278, 1.01390, 1.01674, 1.02147, 1.03182, 1.07820,
2541 1.06056, 1.05798, 1.06867, 1.10433, 1.36390},
2542 {1.05964, 1.06076, 1.06331, 1.06833, 1.07870, 1.13297,
2543 1.10742, 1.10520, 1.11543, 1.15120, 1.41069},
2544 {1.10664, 1.10762, 1.10997, 1.11519, 1.12556, 1.17531,
2545 1.15427, 1.14620, 1.16229, 1.19805, 1.45758},
2546 {1.15352, 1.15421, 1.15683, 1.16218, 1.17242, 1.21910,
2547 1.20035, 1.19863, 1.20579, 1.24473, 1.50412},
2548 {1.20019, 1.20115, 1.20369, 1.20892, 1.21928, 1.26913,
2549 1.24721, 1.24549, 1.25605, 1.29159, 1.54920},
2550 {1.24707, 1.24846, 1.25052, 1.25602, 1.26608, 1.31558,
2551 1.29448, 1.29232, 1.30293, 1.33675, 1.59798},
2552 {1.29391, 1.29475, 1.29738, 1.30255, 1.31294, 1.36244,
2553 1.34167, 1.33918, 1.34979, 1.38229, 1.64496},
2554 {1.34078, 1.34304, 1.34424, 1.35565, 1.35980, 1.40930,
2555 1.38853, 1.38229, 1.39664, 1.42863, 1.69162},
2556 {1.38762, 1.38847, 1.39110, 1.39627, 1.40666, 1.45183,
2557 1.43539, 1.43289, 1.44348, 1.47549, 1.73876},
2558 {1.43524, 1.43533, 1.43796, 1.44310, 1.45371, 1.49305,
2559 1.48224, 1.47941, 1.49034, 1.52601, 1.78552},
2560 {1.48122, 1.48219, 1.48482, 1.48991, 1.50030, 1.53991,
2561 1.52898, 1.52653, 1.53653, 1.57282, 1.82386}};
2562
4d18a639 2563 if (fTimeStruct1) {
2564 delete [] fTimeStruct1;
2565 }
2566 fTimeStruct1 = new Float_t[ktimebin*kZbin];
2567
2568 if (fTimeStruct2) {
2569 delete [] fTimeStruct2;
2570 }
2571 fTimeStruct2 = new Float_t[ktimebin*kZbin];
2572
2573 for (Int_t ctrt = 0; ctrt < ktimebin; ctrt++) {
2574 for (Int_t ctrz = 0; ctrz < kZbin; ctrz++) {
2575 if (vdrift > fVDsmp[6]) {
2576 fTimeStruct1[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2577 fTimeStruct2[ctrt+ctrz*ktimebin] = time2200[ctrt][ctrz];
2578 fVDlo = fVDsmp[6];
2579 fVDhi = fVDsmp[7];
2580 }
2581 else if (vdrift > fVDsmp[5]) {
2582 fTimeStruct1[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2583 fTimeStruct2[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2584 fVDlo = fVDsmp[5];
2585 fVDhi = fVDsmp[6];
2586 }
2587 else if (vdrift > fVDsmp[4]) {
2588 fTimeStruct1[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2589 fTimeStruct2[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2590 fVDlo = fVDsmp[4];
2591 fVDhi = fVDsmp[5];
2592 }
2593 else if (vdrift > fVDsmp[3]) {
2594 fTimeStruct1[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2595 fTimeStruct2[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2596 fVDlo = fVDsmp[3];
2597 fVDhi = fVDsmp[4];
2598 }
2599 else if (vdrift > fVDsmp[2]) {
2600 fTimeStruct1[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2601 fTimeStruct2[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2602 fVDlo = fVDsmp[2];
2603 fVDhi = fVDsmp[3];
2604 }
2605 else if (vdrift > fVDsmp[1]) {
2606 fTimeStruct1[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2607 fTimeStruct2[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2608 fVDlo = fVDsmp[1];
2609 fVDhi = fVDsmp[2];
2610 }
2611 else if (vdrift > (fVDsmp[0] - 1.0e-5)) {
2612 fTimeStruct1[ctrt+ctrz*ktimebin] = time1500[ctrt][ctrz];
2613 fTimeStruct2[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2614 fVDlo = fVDsmp[0];
2615 fVDhi = fVDsmp[1];
3551db50 2616 }
2617 }
2618 }
4d18a639 2619
3551db50 2620}
2621
2622//_____________________________________________________________________________
2623void AliTRDdigitizer::RecalcDiffusion(Float_t vdrift)
2624{
4d18a639 2625 //
2626 // Recalculates the diffusion parameters
2627 //
2628
2629 if (vdrift == fDiffLastVdrift) {
3551db50 2630 return;
4d18a639 2631 }
7754cd1f 2632
4d18a639 2633 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 2634 if (!simParam) {
4329977a 2635 AliFatal("Could not get simulation parameters");
3551db50 2636 return;
2637 }
2638
4d18a639 2639 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
9afbd7de 2640 if (!commonParam) {
4329977a 2641 AliFatal("Could not get common parameters");
3551db50 2642 return;
2643 }
2644
4d18a639 2645 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 2646 if (!calibration) {
4329977a 2647 AliFatal("Could not get calibration object");
3551db50 2648 return;
2649 }
1b95a37b 2650
4d18a639 2651 fDiffLastVdrift = vdrift;
0a17cc30 2652
2653 if (simParam->IsXenon()) {
3551db50 2654
0a17cc30 2655 //
2656 // Vd and B-field dependent diffusion and Lorentz angle
2657 //
2658
2659 // The magnetic field strength
2660 Double_t x[3] = { 0.0, 0.0, 0.0 };
2661 Double_t b[3];
2662 gAlice->Field(x,b); // b[] is in kilo Gauss
2663 Float_t field = b[2] * 0.1; // Tesla
3551db50 2664
0a17cc30 2665 // DiffusionL
2666 const Int_t kNbL = 5;
2667 Float_t p0L[kNbL] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 };
2668 Float_t p1L[kNbL] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 };
2669 Float_t p2L[kNbL] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 };
2670 Float_t p3L[kNbL] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 };
2671
2672 Int_t ibL = ((Int_t) (10 * (field - 0.15)));
2673 ibL = TMath::Max( 0,ibL);
2674 ibL = TMath::Min(kNbL,ibL);
2675
2676 fDiffusionL = p0L[ibL]
2677 + p1L[ibL] * vdrift
2678 + p2L[ibL] * vdrift*vdrift
2679 + p3L[ibL] * vdrift*vdrift*vdrift;
2680
2681 // DiffusionT
2682 const Int_t kNbT = 5;
2683 Float_t p0T[kNbT] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 };
2684 Float_t p1T[kNbT] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 };
2685 Float_t p2T[kNbT] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 };
2686 Float_t p3T[kNbT] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 };
2687
2688 Int_t ibT= ((Int_t) (10 * (field - 0.15)));
2689 ibT = TMath::Max( 0,ibT);
2690 ibT = TMath::Min(kNbT,ibT);
2691
2692 fDiffusionT = p0T[ibT]
2693 + p1T[ibT] * vdrift
2694 + p2T[ibT] * vdrift*vdrift
2695 + p3T[ibT] * vdrift*vdrift*vdrift;
2696
2697 // OmegaTau
2698 fOmegaTau = calibration->GetOmegaTau(vdrift,field);
0a17cc30 2699 if (commonParam->ExBOn()) {
2700 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2701 }
2702 else {
2703 fLorentzFactor = 1.0;
2704 }
4d18a639 2705
0a17cc30 2706 }
2707 else if (simParam->IsArgon()) {
3551db50 2708
0a17cc30 2709 // Diffusion constants and Lorentz angle only for B = 0.5T
2710 fDiffusionL = 0.0182;
2711 fDiffusionT = 0.0159;
2712 fOmegaTau = 0.0219769;
2713 if (commonParam->ExBOn()) {
2714 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2715 }
2716 else {
2717 fLorentzFactor = 1.0;
2718 }
1b95a37b 2719
3551db50 2720 }
9afbd7de 2721
3551db50 2722}
2723
2724//_____________________________________________________________________________
2725Float_t AliTRDdigitizer::GetDiffusionL(Float_t vdrift)
2726{
2727 //
2728 // Returns the longitudinal diffusion coefficient for a given drift
2729 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2730 // The values are according to a GARFIELD simulation.
2731 //
2732
2733 RecalcDiffusion(vdrift);
4d18a639 2734
2735 return fDiffusionL;
9afbd7de 2736
3551db50 2737}
2738
2739//_____________________________________________________________________________
2740Float_t AliTRDdigitizer::GetDiffusionT(Float_t vdrift)
2741{
2742 //
2743 // Returns the transverse diffusion coefficient for a given drift
2744 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2745 // The values are according to a GARFIELD simulation.
2746 //
2747
2748 RecalcDiffusion(vdrift);
4d18a639 2749
2750 return fDiffusionT;
9afbd7de 2751
3551db50 2752}
2753
2754//_____________________________________________________________________________
4329977a 2755Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t absdriftlength
2756 , Double_t &lRow, Double_t &lCol, Double_t &lTime)
3551db50 2757{
2758 //
4329977a 2759 // Applies the diffusion smearing to the position of a single electron.
2760 // Depends on absolute drift length.
3551db50 2761 //
2762
2763 RecalcDiffusion(vdrift);
2764
4329977a 2765 Float_t driftSqrt = TMath::Sqrt(absdriftlength);
4d18a639 2766 Float_t sigmaT = driftSqrt * fDiffusionT;
2767 Float_t sigmaL = driftSqrt * fDiffusionL;
4329977a 2768 lRow = gRandom->Gaus(lRow ,sigmaT);
2769 lCol = gRandom->Gaus(lCol ,sigmaT * GetLorentzFactor(vdrift));
2770 lTime = gRandom->Gaus(lTime,sigmaL * GetLorentzFactor(vdrift));
3551db50 2771
2772 return 1;
9afbd7de 2773
3551db50 2774}
2775
2776//_____________________________________________________________________________
2777Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
2778{
9afbd7de 2779 //
2780 // Returns the recalculated Lorentz factor
2781 //
2782
3551db50 2783 RecalcDiffusion(vd);
4d18a639 2784
2785 return fLorentzFactor;
9afbd7de 2786
3551db50 2787}
2788
2789//_____________________________________________________________________________
4329977a 2790Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t &lCol)
3551db50 2791{
2792 //
4329977a 2793 // Applies E x B effects to the position of a single electron.
2794 // Depends on signed drift length.
3551db50 2795 //
2796
2797 RecalcDiffusion(vdrift);
4329977a 2798
2799 lCol = lCol + fOmegaTau * driftlength;
3551db50 2800
2801 return 1;
9afbd7de 2802
3551db50 2803}