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Small fix for case of no time structure
[u/mrichter/AliRoot.git] / TRD / AliTRDdigitizer.cxx
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f7336fa3 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
88cb7938 16/* $Id$ */
f7336fa3 17
625f5260 18////////////////////////////////////////////////////////////////////////////
19// //
20// Creates and handles digits from TRD hits //
21// //
22// Authors: C. Blume (blume@ikf.uni-frankfurt.de) //
23// C. Lippmann //
24// B. Vulpescu //
25// //
26// The following effects are included: //
27// - Diffusion //
28// - ExB effects //
29// - Gas gain including fluctuations //
30// - Pad-response (simple Gaussian approximation) //
31// - Time-response //
32// - Electronics noise //
33// - Electronics gain //
34// - Digitization //
b65e5048 35// - Zero suppression //
625f5260 36// //
37////////////////////////////////////////////////////////////////////////////
6798b56e 38
f7336fa3 39#include <TMath.h>
40#include <TVector.h>
41#include <TRandom.h>
94de3818 42#include <TROOT.h>
43#include <TTree.h>
793ff80c 44#include <TFile.h>
45#include <TF1.h>
abaf1f1d 46#include <TList.h>
85cbec76 47#include <TTask.h>
3becff3c 48#include <TGeoManager.h>
26d3c914 49
793ff80c 50#include "AliRun.h"
3e2e3ece 51#include "AliMC.h"
88cb7938 52#include "AliRunLoader.h"
53#include "AliLoader.h"
54#include "AliConfig.h"
db30bf0f 55#include "AliMagF.h"
85cbec76 56#include "AliRunDigitizer.h"
88cb7938 57#include "AliRunLoader.h"
58#include "AliLoader.h"
ad2cc20b 59#include "AliLog.h"
f7336fa3 60#include "AliTRD.h"
793ff80c 61#include "AliTRDhit.h"
f7336fa3 62#include "AliTRDdigitizer.h"
b65e5048 63
64#include "AliTRDarrayDictionary.h"
65#include "AliTRDarrayADC.h"
66#include "AliTRDarraySignal.h"
da581aea 67#include "AliTRDdigitsManager.h"
793ff80c 68#include "AliTRDgeometry.h"
a5cadd36 69#include "AliTRDpadPlane.h"
3551db50 70#include "AliTRDcalibDB.h"
71#include "AliTRDSimParam.h"
72#include "AliTRDCommonParam.h"
ecf39416 73#include "AliTRDfeeParam.h"
b65e5048 74#include "AliTRDmcmSim.h"
4329977a 75#include "Cal/AliTRDCalROC.h"
76#include "Cal/AliTRDCalDet.h"
77
f7336fa3 78ClassImp(AliTRDdigitizer)
79
80//_____________________________________________________________________________
85cbec76 81AliTRDdigitizer::AliTRDdigitizer()
4d18a639 82 :AliDigitizer()
83 ,fRunLoader(0)
84 ,fDigitsManager(0)
85 ,fSDigitsManager(0)
86 ,fSDigitsManagerList(0)
87 ,fTRD(0)
88 ,fGeo(0)
89 ,fEvent(0)
90 ,fMasks(0)
91 ,fCompress(kTRUE)
92 ,fSDigits(kFALSE)
4d18a639 93 ,fMergeSignalOnly(kFALSE)
94 ,fDiffLastVdrift(0)
95 ,fDiffusionT(0.0)
96 ,fDiffusionL(0.0)
97 ,fOmegaTau(0.0)
98 ,fLorentzFactor(0.0)
99 ,fTimeLastVdrift(0)
100 ,fTimeStruct1(0)
101 ,fTimeStruct2(0)
102 ,fVDlo(0)
103 ,fVDhi(0)
f7336fa3 104{
105 //
106 // AliTRDdigitizer default constructor
107 //
3551db50 108
109 Init();
3becff3c 110
f7336fa3 111}
112
113//_____________________________________________________________________________
4d18a639 114AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
115 :AliDigitizer(name,title)
116 ,fRunLoader(0)
117 ,fDigitsManager(0)
118 ,fSDigitsManager(0)
119 ,fSDigitsManagerList(0)
120 ,fTRD(0)
121 ,fGeo(0)
122 ,fEvent(0)
123 ,fMasks(0)
124 ,fCompress(kTRUE)
125 ,fSDigits(kFALSE)
4d18a639 126 ,fMergeSignalOnly(kFALSE)
127 ,fDiffLastVdrift(0)
128 ,fDiffusionT(0.0)
129 ,fDiffusionL(0.0)
130 ,fOmegaTau(0.0)
131 ,fLorentzFactor(0.0)
132 ,fTimeLastVdrift(0)
133 ,fTimeStruct1(0)
134 ,fTimeStruct2(0)
135 ,fVDlo(0)
136 ,fVDhi(0)
f7336fa3 137{
138 //
85cbec76 139 // AliTRDdigitizer constructor
140 //
141
3551db50 142 Init();
3becff3c 143
85cbec76 144}
145
146//_____________________________________________________________________________
147AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
4d18a639 148 , const Text_t *name, const Text_t *title)
149 :AliDigitizer(manager,name,title)
150 ,fRunLoader(0)
151 ,fDigitsManager(0)
152 ,fSDigitsManager(0)
153 ,fSDigitsManagerList(0)
154 ,fTRD(0)
155 ,fGeo(0)
156 ,fEvent(0)
157 ,fMasks(0)
158 ,fCompress(kTRUE)
159 ,fSDigits(kFALSE)
4d18a639 160 ,fMergeSignalOnly(kFALSE)
161 ,fDiffLastVdrift(0)
162 ,fDiffusionT(0.0)
163 ,fDiffusionL(0.0)
164 ,fOmegaTau(0.0)
165 ,fLorentzFactor(0.0)
166 ,fTimeLastVdrift(0)
167 ,fTimeStruct1(0)
168 ,fTimeStruct2(0)
169 ,fVDlo(0)
170 ,fVDhi(0)
85cbec76 171{
172 //
173 // AliTRDdigitizer constructor
f7336fa3 174 //
175
3551db50 176 Init();
3becff3c 177
bfc40adc 178}
179
180//_____________________________________________________________________________
181AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
4d18a639 182 :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
183 ,fRunLoader(0)
184 ,fDigitsManager(0)
185 ,fSDigitsManager(0)
186 ,fSDigitsManagerList(0)
187 ,fTRD(0)
188 ,fGeo(0)
189 ,fEvent(0)
190 ,fMasks(0)
191 ,fCompress(kTRUE)
192 ,fSDigits(kFALSE)
4d18a639 193 ,fMergeSignalOnly(kFALSE)
194 ,fDiffLastVdrift(0)
195 ,fDiffusionT(0.0)
196 ,fDiffusionL(0.0)
197 ,fOmegaTau(0.0)
198 ,fLorentzFactor(0.0)
199 ,fTimeLastVdrift(0)
200 ,fTimeStruct1(0)
201 ,fTimeStruct2(0)
202 ,fVDlo(0)
203 ,fVDhi(0)
bfc40adc 204{
205 //
206 // AliTRDdigitizer constructor
207 //
208
3551db50 209 Init();
3becff3c 210
3551db50 211}
88cb7938 212
3551db50 213//_____________________________________________________________________________
214Bool_t AliTRDdigitizer::Init()
215{
3becff3c 216 //
217 // Initialize the digitizer with default values
218 //
219
85a5290f 220 fRunLoader = 0;
4487dad0 221 fDigitsManager = 0;
4487dad0 222 fSDigitsManager = 0;
85a5290f 223 fSDigitsManagerList = 0;
4487dad0 224 fTRD = 0;
225 fGeo = 0;
3becff3c 226
b65e5048 227
abaf1f1d 228 fEvent = 0;
85a5290f 229 fMasks = 0;
abaf1f1d 230 fCompress = kTRUE;
abaf1f1d 231 fSDigits = kFALSE;
4487dad0 232 fMergeSignalOnly = kFALSE;
3551db50 233
4d18a639 234 fTimeLastVdrift = -1;
235 fTimeStruct1 = 0;
236 fTimeStruct2 = 0;
237 fVDlo = 0;
238 fVDhi = 0;
3551db50 239
4d18a639 240 fDiffLastVdrift = -1;
241 fDiffusionT = 0.0;
242 fDiffusionL = 0.0;
243 fLorentzFactor = 0.0;
793ff80c 244
3551db50 245 return AliDigitizer::Init();
3becff3c 246
f7336fa3 247}
248
8230f242 249//_____________________________________________________________________________
4d18a639 250AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d)
251 :AliDigitizer(d)
252 ,fRunLoader(0)
253 ,fDigitsManager(0)
254 ,fSDigitsManager(0)
255 ,fSDigitsManagerList(0)
256 ,fTRD(0)
257 ,fGeo(0)
258 ,fEvent(0)
259 ,fMasks(0)
260 ,fCompress(d.fCompress)
261 ,fSDigits(d.fSDigits)
4d18a639 262 ,fMergeSignalOnly(d.fMergeSignalOnly)
263 ,fDiffLastVdrift(-1)
264 ,fDiffusionT(0.0)
265 ,fDiffusionL(0.0)
266 ,fOmegaTau(0.0)
267 ,fLorentzFactor(0.0)
268 ,fTimeLastVdrift(-1)
269 ,fTimeStruct1(0)
270 ,fTimeStruct2(0)
271 ,fVDlo(0)
272 ,fVDhi(0)
8230f242 273{
274 //
275 // AliTRDdigitizer copy constructor
276 //
277
4d18a639 278 // Do not copy timestructs, just invalidate lastvdrift.
279 // Next time they are requested, they get recalculated
280 if (((AliTRDdigitizer &) d).fTimeStruct1) {
b65e5048 281 delete [] ((AliTRDdigitizer &) d).fTimeStruct1;
4d18a639 282 ((AliTRDdigitizer &) d).fTimeStruct1 = 0;
283 }
284 if (((AliTRDdigitizer &) d).fTimeStruct2) {
285 delete [] ((AliTRDdigitizer &) d).fTimeStruct2;
286 ((AliTRDdigitizer &) d).fTimeStruct2 = 0;
287 }
8230f242 288
289}
290
f7336fa3 291//_____________________________________________________________________________
292AliTRDdigitizer::~AliTRDdigitizer()
293{
8230f242 294 //
295 // AliTRDdigitizer destructor
296 //
f7336fa3 297
abaf1f1d 298 if (fDigitsManager) {
299 delete fDigitsManager;
4d18a639 300 fDigitsManager = 0;
f7336fa3 301 }
302
b65e5048 303 if (fDigitsManager) { //typo? fSDigitsManager?
4d18a639 304 delete fSDigitsManager;
305 fSDigitsManager = 0;
306 }
f7336fa3 307
abaf1f1d 308 if (fSDigitsManagerList) {
47b5729a 309 fSDigitsManagerList->Delete();
abaf1f1d 310 delete fSDigitsManagerList;
4487dad0 311 fSDigitsManagerList = 0;
e23fbb27 312 }
313
314 if (fMasks) {
315 delete [] fMasks;
4329977a 316 fMasks = 0;
e23fbb27 317 }
318
4d18a639 319 if (fTimeStruct1) {
320 delete [] fTimeStruct1;
321 fTimeStruct1 = 0;
3551db50 322 }
323
4d18a639 324 if (fTimeStruct2) {
325 delete [] fTimeStruct2;
326 fTimeStruct2 = 0;
3551db50 327 }
3becff3c 328
f162af62 329 if (fGeo) {
330 delete fGeo;
331 fGeo = 0;
332 }
333
f7336fa3 334}
335
8230f242 336//_____________________________________________________________________________
dd9a6ee3 337AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
338{
339 //
340 // Assignment operator
341 //
342
625f5260 343 if (this != &d) {
344 ((AliTRDdigitizer &) d).Copy(*this);
345 }
4d18a639 346
dd9a6ee3 347 return *this;
348
349}
350
351//_____________________________________________________________________________
e0d47c25 352void AliTRDdigitizer::Copy(TObject &d) const
8230f242 353{
354 //
355 // Copy function
356 //
357
85a5290f 358 ((AliTRDdigitizer &) d).fRunLoader = 0;
4487dad0 359 ((AliTRDdigitizer &) d).fDigitsManager = 0;
85a5290f 360 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
361 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
4487dad0 362 ((AliTRDdigitizer &) d).fTRD = 0;
363 ((AliTRDdigitizer &) d).fGeo = 0;
85a5290f 364 ((AliTRDdigitizer &) d).fEvent = 0;
365 ((AliTRDdigitizer &) d).fMasks = 0;
abaf1f1d 366 ((AliTRDdigitizer &) d).fCompress = fCompress;
abaf1f1d 367 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
4487dad0 368 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
0c24ba98 369
3551db50 370 AliTRDdigitizer& target = (AliTRDdigitizer &) d;
371
3becff3c 372 // Do not copy timestructs, just invalidate lastvdrift.
373 // Next time they are requested, they get recalculated
4d18a639 374 if (target.fTimeStruct1) {
95867fd1 375 delete [] target.fTimeStruct1;
4d18a639 376 target.fTimeStruct1 = 0;
3551db50 377 }
4d18a639 378 if (target.fTimeStruct2) {
95867fd1 379 delete [] target.fTimeStruct2;
4d18a639 380 target.fTimeStruct2 = 0;
3becff3c 381 }
4d18a639 382 target.fTimeLastVdrift = -1;
3becff3c 383
e23fbb27 384}
385
e23fbb27 386//_____________________________________________________________________________
4d18a639 387void AliTRDdigitizer::Exec(Option_t *option)
e23fbb27 388{
389 //
390 // Executes the merging
391 //
392
393 Int_t iInput;
394
395 AliTRDdigitsManager *sdigitsManager;
396
397 TString optionString = option;
398 if (optionString.Contains("deb")) {
9afbd7de 399 AliLog::SetClassDebugLevel("AliTRDdigitizer",1);
7925de54 400 AliInfo("Called with debug option");
e23fbb27 401 }
402
cec4059b 403 // The AliRoot file is already connected by the manager
625f5260 404 AliRunLoader *inrl = 0x0;
88cb7938 405
9afbd7de 406 if (gAlice) {
7925de54 407 AliDebug(1,"AliRun object found on file.");
9afbd7de 408 }
4487dad0 409 else {
88cb7938 410 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
411 inrl->LoadgAlice();
412 gAlice = inrl->GetAliRun();
9afbd7de 413 if (!gAlice) {
7925de54 414 AliError("Could not find AliRun object.")
9afbd7de 415 return;
416 }
4487dad0 417 }
cec4059b 418
e23fbb27 419 Int_t nInput = fManager->GetNinputs();
4d18a639 420 fMasks = new Int_t[nInput];
e23fbb27 421 for (iInput = 0; iInput < nInput; iInput++) {
422 fMasks[iInput] = fManager->GetMask(iInput);
423 }
e23fbb27 424
9afbd7de 425 //
e23fbb27 426 // Initialization
9afbd7de 427 //
e23fbb27 428
95867fd1 429 AliRunLoader *orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
430
67c67368 431 if (InitDetector()) {
9afbd7de 432
95867fd1 433 AliLoader *ogime = orl->GetLoader("TRDLoader");
67c67368 434
95867fd1 435 TTree *tree = 0;
9afbd7de 436 if (fSDigits) {
437 // If we produce SDigits
438 tree = ogime->TreeS();
439 if (!tree) {
440 ogime->MakeTree("S");
67c67368 441 tree = ogime->TreeS();
67c67368 442 }
9afbd7de 443 }
444 else {
445 // If we produce Digits
446 tree = ogime->TreeD();
447 if (!tree) {
448 ogime->MakeTree("D");
449 tree = ogime->TreeD();
67c67368 450 }
9afbd7de 451 }
452
67c67368 453 MakeBranch(tree);
9afbd7de 454
67c67368 455 }
456
e23fbb27 457 for (iInput = 0; iInput < nInput; iInput++) {
458
7925de54 459 AliDebug(1,Form("Add input stream %d",iInput));
e23fbb27 460
9afbd7de 461 // Check if the input tree exists
88cb7938 462 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
4d18a639 463 AliLoader *gime = inrl->GetLoader("TRDLoader");
88cb7938 464
4d18a639 465 TTree *treees = gime->TreeS();
9afbd7de 466 if (treees == 0x0) {
467 if (gime->LoadSDigits()) {
468 AliError(Form("Error Occured while loading S. Digits for input %d.",iInput));
469 return;
470 }
4d18a639 471 treees = gime->TreeS();
9afbd7de 472 }
88cb7938 473
474 if (treees == 0x0) {
7925de54 475 AliError(Form("Input stream %d does not exist",iInput));
c57e2264 476 return;
477 }
478
e23fbb27 479 // Read the s-digits via digits manager
480 sdigitsManager = new AliTRDdigitsManager();
e23fbb27 481 sdigitsManager->SetSDigits(kTRUE);
88cb7938 482
4d18a639 483 AliRunLoader *rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
484 AliLoader *gimme = rl->GetLoader("TRDLoader");
b65e5048 485 if (!gimme->TreeS())
486 {
487 gimme->LoadSDigits();
488 }
e23fbb27 489
b65e5048 490 sdigitsManager->ReadDigits(gimme->TreeS());
491
e23fbb27 492 // Add the s-digits to the input list
493 AddSDigitsManager(sdigitsManager);
494
495 }
496
497 // Convert the s-digits to normal digits
7925de54 498 AliDebug(1,"Do the conversion");
e23fbb27 499 SDigits2Digits();
500
501 // Store the digits
7925de54 502 AliDebug(1,"Write the digits");
e23fbb27 503 fDigitsManager->WriteDigits();
88cb7938 504
9afbd7de 505 // Write parameters
67c67368 506 orl->CdGAFile();
67c67368 507
26d3c914 508 // Clean up
b1113c6b 509 DeleteSDigitsManager();
510
26d3c914 511 AliDebug(1,"Done");
512
e23fbb27 513}
514
f7336fa3 515//_____________________________________________________________________________
e23fbb27 516Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
f7336fa3 517{
518 //
519 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
520 //
f7336fa3 521 // Connect the AliRoot file containing Geometry, Kine, and Hits
3becff3c 522 //
f540341d 523
e191bb57 524 TString evfoldname = AliConfig::GetDefaultEventFolderName();
9afbd7de 525
f540341d 526 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
9afbd7de 527 if (!fRunLoader) {
528 fRunLoader = AliRunLoader::Open(file,evfoldname,"UPDATE");
529 }
9afbd7de 530 if (!fRunLoader) {
95867fd1 531 AliError(Form("Can not open session for file %s.",file));
532 return kFALSE;
533 }
534
535 if (!fRunLoader->GetAliRun()) {
536 fRunLoader->LoadgAlice();
537 }
538 gAlice = fRunLoader->GetAliRun();
539
540 if (gAlice) {
7925de54 541 AliDebug(1,"AliRun object found on file.");
95867fd1 542 }
543 else {
7925de54 544 AliError("Could not find AliRun object.");
95867fd1 545 return kFALSE;
546 }
547
548 fEvent = nEvent;
549
550 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
551 if (!loader) {
552 AliError("Can not get TRD loader from Run Loader");
553 return kFALSE;
554 }
555
556 if (InitDetector()) {
557 TTree *tree = 0;
558 if (fSDigits) {
559 // If we produce SDigits
560 tree = loader->TreeS();
561 if (!tree) {
562 loader->MakeTree("S");
563 tree = loader->TreeS();
564 }
565 }
566 else {
567 // If we produce Digits
568 tree = loader->TreeD();
569 if (!tree) {
570 loader->MakeTree("D");
571 tree = loader->TreeD();
572 }
573 }
574 return MakeBranch(tree);
575 }
576 else {
577 return kFALSE;
578 }
579
580}
581
582//_____________________________________________________________________________
583Bool_t AliTRDdigitizer::Open(AliRunLoader *runLoader, Int_t nEvent)
584{
585 //
586 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
587 //
588 // Connect the AliRoot file containing Geometry, Kine, and Hits
589 //
590
591 fRunLoader = runLoader;
592 if (!fRunLoader) {
593 AliError("RunLoader does not exist");
594 return kFALSE;
4d18a639 595 }
88cb7938 596
9afbd7de 597 if (!fRunLoader->GetAliRun()) {
598 fRunLoader->LoadgAlice();
599 }
88cb7938 600 gAlice = fRunLoader->GetAliRun();
601
da581aea 602 if (gAlice) {
7925de54 603 AliDebug(1,"AliRun object found on file.");
da581aea 604 }
605 else {
7925de54 606 AliError("Could not find AliRun object.");
da581aea 607 return kFALSE;
608 }
f7336fa3 609
610 fEvent = nEvent;
611
4d18a639 612 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 613 if (!loader) {
614 AliError("Can not get TRD loader from Run Loader");
615 return kFALSE;
616 }
88cb7938 617
abaf1f1d 618 if (InitDetector()) {
4d18a639 619 TTree *tree = 0;
9afbd7de 620 if (fSDigits) {
621 // If we produce SDigits
622 tree = loader->TreeS();
623 if (!tree) {
624 loader->MakeTree("S");
625 tree = loader->TreeS();
4d18a639 626 }
9afbd7de 627 }
628 else {
629 // If we produce Digits
95867fd1 630 tree = loader->TreeD();
9afbd7de 631 if (!tree) {
632 loader->MakeTree("D");
633 tree = loader->TreeD();
4d18a639 634 }
9afbd7de 635 }
88cb7938 636 return MakeBranch(tree);
abaf1f1d 637 }
638 else {
639 return kFALSE;
640 }
793ff80c 641
642}
643
644//_____________________________________________________________________________
645Bool_t AliTRDdigitizer::InitDetector()
646{
647 //
648 // Sets the pointer to the TRD detector and the geometry
649 //
650
dd9a6ee3 651 // Get the pointer to the detector class and check for version 1
4487dad0 652 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
cec4059b 653 if (!fTRD) {
7925de54 654 AliFatal("No TRD module found");
cec4059b 655 exit(1);
656 }
dd9a6ee3 657 if (fTRD->IsVersion() != 1) {
7925de54 658 AliFatal("TRD must be version 1 (slow simulator)");
dd9a6ee3 659 exit(1);
660 }
661
662 // Get the geometry
f162af62 663 fGeo = new AliTRDgeometry();
dd9a6ee3 664
abaf1f1d 665 // Create a digits manager
625f5260 666 if (fDigitsManager) {
667 delete fDigitsManager;
668 }
abaf1f1d 669 fDigitsManager = new AliTRDdigitsManager();
670 fDigitsManager->SetSDigits(fSDigits);
671 fDigitsManager->CreateArrays();
672 fDigitsManager->SetEvent(fEvent);
abaf1f1d 673
674 // The list for the input s-digits manager to be merged
47b5729a 675 if (fSDigitsManagerList) {
676 fSDigitsManagerList->Delete();
3becff3c 677 }
678 else {
47b5729a 679 fSDigitsManagerList = new TList();
680 }
abaf1f1d 681
4487dad0 682 return kTRUE;
f7336fa3 683
684}
6244debe 685//_____________________________________________________________________________
95867fd1 686Bool_t AliTRDdigitizer::MakeBranch(TTree *tree) const
6244debe 687{
abaf1f1d 688 //
689 // Create the branches for the digits array
6244debe 690 //
691
88cb7938 692 return fDigitsManager->MakeBranch(tree);
6244debe 693
694}
695
625f5260 696//_____________________________________________________________________________
697void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
698{
699 //
700 // Add a digits manager for s-digits to the input list.
701 //
702
703 fSDigitsManagerList->Add(man);
704
705}
706
707//_____________________________________________________________________________
708void AliTRDdigitizer::DeleteSDigitsManager()
709{
710 //
711 // Removes digits manager from the input list.
712 //
713
714 fSDigitsManagerList->Delete();
715
716}
717
f7336fa3 718//_____________________________________________________________________________
719Bool_t AliTRDdigitizer::MakeDigits()
720{
721 //
872a7aba 722 // Creates digits.
f7336fa3 723 //
724
625f5260 725 AliDebug(1,"Start creating digits");
726
727 if (!fGeo) {
728 AliError("No geometry defined");
729 return kFALSE;
730 }
f7336fa3 731
625f5260 732 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
733 if (!calibration) {
734 AliFatal("Could not get calibration object");
735 return kFALSE;
736 }
737
738 const Int_t kNdet = AliTRDgeometry::Ndet();
739
740 Float_t **hits = new Float_t*[kNdet];
741 Int_t *nhit = new Int_t[kNdet];
742
b65e5048 743 AliTRDarraySignal *signals = 0x0;
625f5260 744
745 // Sort all hits according to detector number
746 if (!SortHits(hits,nhit)) {
747 AliError("Sorting hits failed");
748 return kFALSE;
749 }
750
751 // Loop through all detectors
752 for (Int_t det = 0; det < kNdet; det++) {
753
754 // Detectors that are switched off, not installed, etc.
755 if (( calibration->IsChamberInstalled(det)) &&
b65e5048 756 (!calibration->IsChamberMasked(det)) &&
625f5260 757 ( fGeo->ChamberInGeometry(det)) &&
758 (nhit[det] > 0)) {
759
b65e5048 760 signals = new AliTRDarraySignal();
761
625f5260 762 // Convert the hits of the current detector to detector signals
763 if (!ConvertHits(det,hits[det],nhit[det],signals)) {
b65e5048 764 AliError(Form("Conversion of hits failed for detector=%d",det));
625f5260 765 return kFALSE;
766 }
767 // Convert the detector signals to digits or s-digits
768 if (!ConvertSignals(det,signals)) {
b65e5048 769 AliError(Form("Conversion of signals failed for detector=%d",det));
770 return kFALSE;
625f5260 771 }
772
773 // Delete the signals array
774 delete signals;
775 signals = 0x0;
776
777 } // if: detector status
778
27cea06a 779 delete [] hits[det];
780
625f5260 781 } // for: detector
782
783 delete [] hits;
784 delete [] nhit;
785
786 return kTRUE;
787
788}
789
790//_____________________________________________________________________________
791Bool_t AliTRDdigitizer::SortHits(Float_t **hits, Int_t *nhit)
792{
793 //
794 // Read all the hits and sorts them according to detector number
795 // in the output array <hits>.
796 //
797
798 AliDebug(1,"Start sorting hits");
799
800 const Int_t kNdet = AliTRDgeometry::Ndet();
801 // Size of the hit vector
802 const Int_t kNhit = 6;
803
804 Float_t *xyz = 0;
805 Int_t nhitTrk = 0;
806
807 Int_t *lhit = new Int_t[kNdet];
808
809 for (Int_t det = 0; det < kNdet; det++) {
810 lhit[det] = 0;
811 nhit[det] = 0;
812 hits[det] = 0;
813 }
814
815 AliLoader *gimme = fRunLoader->GetLoader("TRDLoader");
816 if (!gimme->TreeH()) {
817 gimme->LoadHits();
818 }
819 TTree *hitTree = gimme->TreeH();
820 if (hitTree == 0x0) {
821 AliError("Can not get TreeH");
822 return kFALSE;
823 }
824 fTRD->SetTreeAddress();
825
826 // Get the number of entries in the hit tree
827 // (Number of primary particles creating a hit somewhere)
828 Int_t nTrk = (Int_t) hitTree->GetEntries();
829 AliDebug(1,Form("Found %d tracks",nTrk));
830
831 // Loop through all the tracks in the tree
832 for (Int_t iTrk = 0; iTrk < nTrk; iTrk++) {
833
3e2e3ece 834 gAlice->GetMCApp()->ResetHits();
625f5260 835 hitTree->GetEvent(iTrk);
836
837 if (!fTRD->Hits()) {
838 AliError(Form("No hits array for track = %d",iTrk));
839 continue;
840 }
841
842 // Number of hits for this track
843 nhitTrk = fTRD->Hits()->GetEntriesFast();
844
845 Int_t hitCnt = 0;
846 // Loop through the TRD hits
847 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
848 while (hit) {
849
850 hitCnt++;
851
852 // Don't analyze test hits
853 if (((Int_t) hit->GetCharge()) != 0) {
854
855 Int_t trk = hit->Track();
856 Int_t det = hit->GetDetector();
857 Int_t q = hit->GetCharge();
858 Float_t x = hit->X();
859 Float_t y = hit->Y();
860 Float_t z = hit->Z();
861 Float_t time = hit->GetTime();
862
863 if (nhit[det] == lhit[det]) {
864 // Inititialization of new detector
865 xyz = new Float_t[kNhit*(nhitTrk+lhit[det])];
866 if (hits[det]) {
867 memcpy(xyz,hits[det],sizeof(Float_t)*kNhit*lhit[det]);
868 delete [] hits[det];
869 }
870 lhit[det] += nhitTrk;
871 hits[det] = xyz;
872 }
873 else {
874 xyz = hits[det];
875 }
876 xyz[nhit[det]*kNhit+0] = x;
877 xyz[nhit[det]*kNhit+1] = y;
878 xyz[nhit[det]*kNhit+2] = z;
879 xyz[nhit[det]*kNhit+3] = q;
880 xyz[nhit[det]*kNhit+4] = trk;
881 xyz[nhit[det]*kNhit+5] = time;
882 nhit[det]++;
883
884 } // if: charge != 0
885
886 hit = (AliTRDhit *) fTRD->NextHit();
887
888 } // for: hits of one track
889
890 } // for: tracks
891
892 delete [] lhit;
893
894 return kTRUE;
895
896}
f7336fa3 897
625f5260 898//_____________________________________________________________________________
899Bool_t AliTRDdigitizer::ConvertHits(Int_t det, Float_t *hits, Int_t nhit
b65e5048 900 , AliTRDarraySignal *signals)
625f5260 901{
902 //
903 // Converts the detectorwise sorted hits to detector signals
904 //
905
906 AliDebug(1,Form("Start converting hits for detector=%d (nhits=%d)",det,nhit));
f7336fa3 907
793ff80c 908 // Number of pads included in the pad response
a5cadd36 909 const Int_t kNpad = 3;
793ff80c 910 // Number of track dictionary arrays
625f5260 911 const Int_t kNdict = AliTRDdigitsManager::kNDict;
912 // Size of the hit vector
913 const Int_t kNhit = 6;
793ff80c 914
4329977a 915 // Width of the amplification region
916 const Float_t kAmWidth = AliTRDgeometry::AmThick();
3becff3c 917 // Width of the drift region
ccb4315c 918 const Float_t kDrWidth = AliTRDgeometry::DrThick();
4329977a 919 // Drift + amplification region
920 const Float_t kDrMin = - 0.5 * kAmWidth;
921 const Float_t kDrMax = kDrWidth + 0.5 * kAmWidth;
3551db50 922
625f5260 923 Int_t iPad = 0;
924 Int_t dict = 0;
925 Int_t timeBinTRFend = 1;
872a7aba 926
a5cadd36 927 Double_t pos[3];
4329977a 928 Double_t loc[3];
a5cadd36 929 Double_t padSignal[kNpad];
930 Double_t signalOld[kNpad];
872a7aba 931
b65e5048 932 AliTRDarrayDictionary *dictionary[kNdict];
4329977a 933
9afbd7de 934 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 935 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
625f5260 936 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
937
3becff3c 938 if (!commonParam) {
4329977a 939 AliFatal("Could not get common parameterss");
3551db50 940 return kFALSE;
941 }
625f5260 942 if (!simParam) {
943 AliFatal("Could not get simulation parameters");
944 return kFALSE;
945 }
3becff3c 946 if (!calibration) {
4329977a 947 AliFatal("Could not get calibration object");
3551db50 948 return kFALSE;
949 }
950
625f5260 951 // Get the detector wise calibration objects
952 AliTRDCalROC *calVdriftROC = 0;
953 Float_t calVdriftDetValue = 0.0;
954 const AliTRDCalDet *calVdriftDet = calibration->GetVdriftDet();
955 AliTRDCalROC *calT0ROC = 0;
956 Float_t calT0DetValue = 0.0;
957 const AliTRDCalDet *calT0Det = calibration->GetT0Det();
4329977a 958
4329977a 959 if (simParam->TRFOn()) {
960 timeBinTRFend = ((Int_t) (simParam->GetTRFhi()
961 * commonParam->GetSamplingFrequency())) - 1;
4329977a 962 }
963
3becff3c 964 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
b43a3e17 965 Float_t samplingRate = commonParam->GetSamplingFrequency();
4329977a 966 Float_t elAttachProp = simParam->GetElAttachProp() / 100.0;
a328fff9 967
625f5260 968 AliTRDpadPlane *padPlane = fGeo->GetPadPlane(det);
b65e5048 969 Int_t layer = fGeo->GetLayer(det); //update
625f5260 970 Float_t row0 = padPlane->GetRow0ROC();
971 Int_t nRowMax = padPlane->GetNrows();
972 Int_t nColMax = padPlane->GetNcols();
973
974 // Create a new array for the signals
975 signals->Allocate(nRowMax,nColMax,nTimeTotal);
976
977 // Create a new array for the dictionary
978 for (dict = 0; dict < kNdict; dict++) {
b65e5048 979 dictionary[dict] = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
625f5260 980 dictionary[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
981 }
982
983 // Loop through the hits in this detector
984 for (Int_t hit = 0; hit < nhit; hit++) {
985
986 pos[0] = hits[hit*kNhit+0];
987 pos[1] = hits[hit*kNhit+1];
988 pos[2] = hits[hit*kNhit+2];
989 Float_t q = hits[hit*kNhit+3];
990 Float_t hittime = hits[hit*kNhit+5];
991 Int_t track = ((Int_t) hits[hit*kNhit+4]);
992
993 Int_t inDrift = 1;
994
995 // Find the current volume with the geo manager
996 gGeoManager->SetCurrentPoint(pos);
997 gGeoManager->FindNode();
998 if (strstr(gGeoManager->GetPath(),"/UK")) {
999 inDrift = 0;
1000 }
793ff80c 1001
625f5260 1002 // Get the calibration objects
1003 calVdriftROC = calibration->GetVdriftROC(det);
1004 calVdriftDetValue = calVdriftDet->GetValue(det);
1005 calT0ROC = calibration->GetT0ROC(det);
1006 calT0DetValue = calT0Det->GetValue(det);
1007
1008 // Go to the local coordinate system:
1009 // loc[0] - col direction in amplification or driftvolume
1010 // loc[1] - row direction in amplification or driftvolume
1011 // loc[2] - time direction in amplification or driftvolume
1012 gGeoManager->MasterToLocal(pos,loc);
1013 if (inDrift) {
1014 // Relative to middle of amplification region
1015 loc[2] = loc[2] - kDrWidth/2.0 - kAmWidth/2.0;
1016 }
793ff80c 1017
625f5260 1018 // The driftlength [cm] (w/o diffusion yet !).
1019 // It is negative if the hit is between pad plane and anode wires.
1020 Double_t driftlength = -1.0 * loc[2];
e23fbb27 1021
625f5260 1022 // Stupid patch to take care of TR photons that are absorbed
1023 // outside the chamber volume. A real fix would actually need
1024 // a more clever implementation of the TR hit generation
1025 if (q < 0.0) {
1026 if ((loc[1] < padPlane->GetRowEndROC()) ||
1027 (loc[1] > padPlane->GetRow0ROC())) {
f881dc35 1028 continue;
1029 }
625f5260 1030 if ((driftlength < kDrMin) ||
1031 (driftlength > kDrMax)) {
1032 continue;
4329977a 1033 }
625f5260 1034 }
f881dc35 1035
625f5260 1036 // Get row and col of unsmeared electron to retrieve drift velocity
1037 // The pad row (z-direction)
1038 Int_t rowE = padPlane->GetPadRowNumberROC(loc[1]);
1039 if (rowE < 0) {
1040 continue;
1041 }
1042 Double_t rowOffset = padPlane->GetPadRowOffsetROC(rowE,loc[1]);
1043 // The pad column (rphi-direction)
1044 Double_t offsetTilt = padPlane->GetTiltOffset(rowOffset);
1045 Int_t colE = padPlane->GetPadColNumber(loc[0]+offsetTilt);
1046 if (colE < 0) {
1047 continue;
1048 }
0a17cc30 1049 Double_t colOffset = 0.0;
f881dc35 1050
625f5260 1051 // Normalized drift length
1052 Float_t driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1053 Double_t absdriftlength = TMath::Abs(driftlength);
1054 if (commonParam->ExBOn()) {
1055 absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
1056 }
1057
1058 // Loop over all electrons of this hit
1059 // TR photons produce hits with negative charge
1060 Int_t nEl = ((Int_t) TMath::Abs(q));
1061 for (Int_t iEl = 0; iEl < nEl; iEl++) {
1062
1063 // Now the real local coordinate system of the ROC
1064 // column direction: locC
1065 // row direction: locR
1066 // time direction: locT
1067 // locR and locC are identical to the coordinates of the corresponding
1068 // volumina of the drift or amplification region.
1069 // locT is defined relative to the wire plane (i.e. middle of amplification
26d3c914 1070 // region), meaning locT = 0, and is negative for hits coming from the
625f5260 1071 // drift region.
1072 Double_t locC = loc[0];
1073 Double_t locR = loc[1];
1074 Double_t locT = loc[2];
1075
1076 // Electron attachment
1077 if (simParam->ElAttachOn()) {
1078 if (gRandom->Rndm() < (absdriftlength * elAttachProp)) {
1079 continue;
f881dc35 1080 }
625f5260 1081 }
1082
1083 // Apply the diffusion smearing
1084 if (simParam->DiffusionOn()) {
1085 if (!(Diffusion(driftvelocity,absdriftlength,locR,locC,locT))) {
1086 continue;
f881dc35 1087 }
f881dc35 1088 }
793ff80c 1089
625f5260 1090 // Apply E x B effects (depends on drift direction)
1091 if (commonParam->ExBOn()) {
1092 if (!(ExB(driftvelocity,driftlength,locC))) {
4329977a 1093 continue;
1094 }
729161c5 1095 }
1096
625f5260 1097 // The electron position after diffusion and ExB in pad coordinates.
4329977a 1098 // The pad row (z-direction)
625f5260 1099 rowE = padPlane->GetPadRowNumberROC(locR);
1100 if (rowE < 0) continue;
1101 rowOffset = padPlane->GetPadRowOffsetROC(rowE,locR);
4329977a 1102
1103 // The pad column (rphi-direction)
625f5260 1104 offsetTilt = padPlane->GetTiltOffset(rowOffset);
1105 colE = padPlane->GetPadColNumber(locC+offsetTilt);
1106 if (colE < 0) continue;
1107 colOffset = padPlane->GetPadColOffset(colE,locC+offsetTilt);
b65e5048 1108
625f5260 1109 // Also re-retrieve drift velocity because col and row may have changed
1110 driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1111 Float_t t0 = calT0DetValue + calT0ROC->GetValue(colE,rowE);
1112
1113 // Convert the position to drift time [mus], using either constant drift velocity or
1114 // time structure of drift cells (non-isochronity, GARFIELD calculation).
1115 // Also add absolute time of hits to take pile-up events into account properly
1116 Double_t drifttime;
1117 if (simParam->TimeStructOn()) {
1118 // Get z-position with respect to anode wire
1119 Double_t zz = row0 - locR + simParam->GetAnodeWireOffset();
1120 zz -= ((Int_t)(2 * zz)) / 2.0;
1121 if (zz > 0.25) {
1122 zz = 0.5 - zz;
1123 }
1124 // Use drift time map (GARFIELD)
1125 drifttime = TimeStruct(driftvelocity,0.5*kAmWidth-1.0*locT,zz)
1126 + hittime;
1127 }
1128 else {
1129 // Use constant drift velocity
26d3c914 1130 drifttime = TMath::Abs(locT) / driftvelocity
625f5260 1131 + hittime;
4329977a 1132 }
625f5260 1133
1134 // Apply the gas gain including fluctuations
1135 Double_t ggRndm = 0.0;
1136 do {
1137 ggRndm = gRandom->Rndm();
1138 } while (ggRndm <= 0);
eb52b657 1139 Double_t signal = -(simParam->GetGasGain()) * TMath::Log(ggRndm);
625f5260 1140
1141 // Apply the pad response
1142 if (simParam->PRFOn()) {
1143 // The distance of the electron to the center of the pad
1144 // in units of pad width
1145 Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
1146 / padPlane->GetColSize(colE);
1147 // This is a fixed parametrization, i.e. not dependent on
1148 // calibration values !
053767a4 1149 if (!(calibration->PadResponse(signal,dist,layer,padSignal))) continue;
625f5260 1150 }
1151 else {
1152 padSignal[0] = 0.0;
1153 padSignal[1] = signal;
1154 padSignal[2] = 0.0;
4329977a 1155 }
f881dc35 1156
625f5260 1157 // The time bin (always positive), with t0 distortion
1158 Double_t timeBinIdeal = drifttime * samplingRate + t0;
1159 // Protection
1160 if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
1161 timeBinIdeal = 2 * nTimeTotal;
1162 }
1163 Int_t timeBinTruncated = ((Int_t) timeBinIdeal);
1164 // The distance of the position to the middle of the timebin
1165 Double_t timeOffset = ((Float_t) timeBinTruncated
1166 + 0.5 - timeBinIdeal) / samplingRate;
3551db50 1167
625f5260 1168 // Sample the time response inside the drift region
1169 // + additional time bins before and after.
1170 // The sampling is done always in the middle of the time bin
1171 for (Int_t iTimeBin = TMath::Max(timeBinTruncated,0)
1172 ;iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal)
1173 ;iTimeBin++) {
1174
1175 // Apply the time response
1176 Double_t timeResponse = 1.0;
1177 Double_t crossTalk = 0.0;
1178 Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
1179 if (simParam->TRFOn()) {
1180 timeResponse = simParam->TimeResponse(time);
f881dc35 1181 }
625f5260 1182 if (simParam->CTOn()) {
1183 crossTalk = simParam->CrossTalk(time);
f881dc35 1184 }
e23fbb27 1185
625f5260 1186 signalOld[0] = 0.0;
1187 signalOld[1] = 0.0;
1188 signalOld[2] = 0.0;
e23fbb27 1189
625f5260 1190 for (iPad = 0; iPad < kNpad; iPad++) {
f7336fa3 1191
625f5260 1192 Int_t colPos = colE + iPad - 1;
1193 if (colPos < 0) continue;
1194 if (colPos >= nColMax) break;
e23fbb27 1195
625f5260 1196 // Add the signals
b65e5048 1197 signalOld[iPad] = signals->GetData(rowE,colPos,iTimeBin);
e23fbb27 1198
625f5260 1199 if (colPos != colE) {
1200 // Cross talk added to non-central pads
1201 signalOld[iPad] += padSignal[iPad]
1202 * (timeResponse + crossTalk);
1203 }
1204 else {
1205 // W/o cross talk at central pad
1206 signalOld[iPad] += padSignal[iPad]
1207 * timeResponse;
1208 }
f881dc35 1209
b65e5048 1210 signals->SetData(rowE,colPos,iTimeBin,signalOld[iPad]);
625f5260 1211
1212 // Store the track index in the dictionary
1213 // Note: We store index+1 in order to allow the array to be compressed
b65e5048 1214 // Note2: Taking out the +1 in track
625f5260 1215 if (signalOld[iPad] > 0.0) {
1216 for (dict = 0; dict < kNdict; dict++) {
b65e5048 1217 Int_t oldTrack = dictionary[dict]->GetData(rowE,colPos,iTimeBin);
1218 if (oldTrack == track) break;
1219 if (oldTrack == -1 ) {
1220 dictionary[dict]->SetData(rowE,colPos,iTimeBin,track);
1221 break;
1222 }
f881dc35 1223 }
625f5260 1224 }
872a7aba 1225
625f5260 1226 } // Loop: pads
f7336fa3 1227
625f5260 1228 } // Loop: time bins
f7336fa3 1229
625f5260 1230 } // Loop: electrons of a single hit
f7336fa3 1231
625f5260 1232 } // Loop: hits
f7336fa3 1233
625f5260 1234 AliDebug(2,Form("Finished analyzing %d hits",nhit));
e23fbb27 1235
625f5260 1236 return kTRUE;
e23fbb27 1237
625f5260 1238}
793ff80c 1239
625f5260 1240//_____________________________________________________________________________
b65e5048 1241Bool_t AliTRDdigitizer::ConvertSignals(Int_t det, AliTRDarraySignal *signals)
625f5260 1242{
4329977a 1243 //
625f5260 1244 // Convert signals to digits
4329977a 1245 //
1246
625f5260 1247 AliDebug(1,Form("Start converting the signals for detector %d",det));
1248
1249 if (fSDigits) {
1250 // Convert the signal array to s-digits
1251 if (!Signal2SDigits(det,signals)) {
1252 return kFALSE;
793ff80c 1253 }
625f5260 1254 }
1255 else {
1256 // Convert the signal array to digits
1257 if (!Signal2ADC(det,signals)) {
1258 return kFALSE;
793ff80c 1259 }
625f5260 1260 }
f7336fa3 1261
625f5260 1262 // Compress the arrays
b65e5048 1263 CompressOutputArrays(det);
6244debe 1264
625f5260 1265 return kTRUE;
6244debe 1266
625f5260 1267}
4329977a 1268
625f5260 1269//_____________________________________________________________________________
b65e5048 1270Bool_t AliTRDdigitizer::Signal2ADC(Int_t det, AliTRDarraySignal *signals)
625f5260 1271{
1272 //
1273 // Converts the sampled electron signals to ADC values for a given chamber
1274 //
6244debe 1275
625f5260 1276 AliDebug(1,Form("Start converting signals to ADC values for detector=%d",det));
e23fbb27 1277
625f5260 1278 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1279 if (!calibration) {
1280 AliFatal("Could not get calibration object");
1281 return kFALSE;
1282 }
793ff80c 1283
625f5260 1284 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
1285 if (!simParam) {
1286 AliFatal("Could not get simulation parameters");
1287 return kFALSE;
1288 }
f7336fa3 1289
625f5260 1290 // Converts number of electrons to fC
1291 const Double_t kEl2fC = 1.602e-19 * 1.0e15;
0c24ba98 1292
625f5260 1293 // Coupling factor
1294 Double_t coupling = simParam->GetPadCoupling()
1295 * simParam->GetTimeCoupling();
1296 // Electronics conversion factor
1297 Double_t convert = kEl2fC
1298 * simParam->GetChipGain();
1299 // ADC conversion factor
1300 Double_t adcConvert = simParam->GetADCoutRange()
1301 / simParam->GetADCinRange();
1302 // The electronics baseline in mV
1303 Double_t baseline = simParam->GetADCbaseline()
1304 / adcConvert;
1305 // The electronics baseline in electrons
1306 Double_t baselineEl = baseline
1307 / convert;
1308
1309 Int_t row = 0;
1310 Int_t col = 0;
1311 Int_t time = 0;
1312
1313 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1314 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1315 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
abaf1f1d 1316
625f5260 1317 // The gainfactor calibration objects
1318 const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
1319 AliTRDCalROC *calGainFactorROC = 0;
1320 Float_t calGainFactorDetValue = 0.0;
f7336fa3 1321
b65e5048 1322 AliTRDarrayADC *digits = 0x0;
e23fbb27 1323
625f5260 1324 if (!signals) {
1325 AliError(Form("Signals array for detector %d does not exist\n",det));
1326 return kFALSE;
1327 }
1328 if (signals->HasData()) {
1329 // Expand the container if neccessary
b65e5048 1330 signals->Expand();
625f5260 1331 }
1332 else {
1333 // Create missing containers
1334 signals->Allocate(nRowMax,nColMax,nTimeTotal);
f7336fa3 1335 }
1336
625f5260 1337 // Get the container for the digits of this detector
1338 if (fDigitsManager->HasSDigits()) {
1339 AliError("Digits manager has s-digits");
1340 return kFALSE;
1341 }
b65e5048 1342
1343 digits = (AliTRDarrayADC *) fDigitsManager->GetDigits(det);
625f5260 1344 // Allocate memory space for the digits buffer
1345 if (!digits->HasData()) {
1346 digits->Allocate(nRowMax,nColMax,nTimeTotal);
0c24ba98 1347 }
1348
625f5260 1349 // Get the calibration objects
1350 calGainFactorROC = calibration->GetGainFactorROC(det);
1351 calGainFactorDetValue = calGainFactorDet->GetValue(det);
abaf1f1d 1352
625f5260 1353 // Create the digits for this chamber
1354 for (row = 0; row < nRowMax; row++ ) {
1355 for (col = 0; col < nColMax; col++ ) {
abaf1f1d 1356
625f5260 1357 // Check whether pad is masked
1358 // Bridged pads are not considered yet!!!
1359 if (calibration->IsPadMasked(det,col,row)) {
1360 continue;
1361 }
abaf1f1d 1362
625f5260 1363 // The gain factors
1364 Float_t padgain = calGainFactorDetValue
1365 * calGainFactorROC->GetValue(col,row);
1366 if (padgain <= 0) {
1367 AliError(Form("Not a valid gain %f, %d %d %d",padgain,det,col,row));
1368 }
abaf1f1d 1369
625f5260 1370 for (time = 0; time < nTimeTotal; time++) {
1371
1372 // Get the signal amplitude
b65e5048 1373 Float_t signalAmp = signals->GetData(row,col,time);
625f5260 1374 // Pad and time coupling
1375 signalAmp *= coupling;
1376 // Gain factors
1377 signalAmp *= padgain;
1378
1379 // Add the noise, starting from minus ADC baseline in electrons
1380 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
1381 ,-baselineEl);
1382
1383 // Convert to mV
1384 signalAmp *= convert;
1385 // Add ADC baseline in mV
1386 signalAmp += baseline;
1387
1388 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
1389 // signal is larger than fADCinRange
1390 Short_t adc = 0;
1391 if (signalAmp >= simParam->GetADCinRange()) {
1392 adc = ((Short_t) simParam->GetADCoutRange());
1393 }
1394 else {
1395 adc = TMath::Nint(signalAmp * adcConvert);
1396 }
abaf1f1d 1397
b65e5048 1398 // Saving all digits
1399 digits->SetData(row,col,time,adc);
abaf1f1d 1400
625f5260 1401 } // for: time
b65e5048 1402
625f5260 1403 } // for: col
1404 } // for: row
b1113c6b 1405
b65e5048 1406 // Do the Zero Suppression
1407 ZS(digits);
1408
625f5260 1409 return kTRUE;
b1113c6b 1410
1411}
1412
abaf1f1d 1413//_____________________________________________________________________________
b65e5048 1414Bool_t AliTRDdigitizer::Signal2SDigits(Int_t det, AliTRDarraySignal *signals)
abaf1f1d 1415{
1416 //
625f5260 1417 // Converts the sampled electron signals to s-digits
abaf1f1d 1418 //
1419
625f5260 1420 AliDebug(1,Form("Start converting signals to s-digits for detector=%d",det));
abaf1f1d 1421
4329977a 1422 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1423 if (!calibration) {
4329977a 1424 AliFatal("Could not get calibration object");
3551db50 1425 return kFALSE;
1426 }
6bf5f0ce 1427
625f5260 1428 Int_t row = 0;
1429 Int_t col = 0;
1430 Int_t time = 0;
9afbd7de 1431
625f5260 1432 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1433 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1434 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
e23fbb27 1435
625f5260 1436 // Get the container for the digits of this detector
b65e5048 1437
625f5260 1438 if (!fDigitsManager->HasSDigits()) {
1439 AliError("Digits manager has no s-digits");
1440 return kFALSE;
1441 }
b65e5048 1442
1443 AliTRDarraySignal *digits = (AliTRDarraySignal *) fDigitsManager->GetSDigits(det);
625f5260 1444 // Allocate memory space for the digits buffer
1445 if (!digits->HasData()) {
1446 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1447 }
e23fbb27 1448
625f5260 1449 // Create the sdigits for this chamber
1450 for (row = 0; row < nRowMax; row++ ) {
1451 for (col = 0; col < nColMax; col++ ) {
1452 for (time = 0; time < nTimeTotal; time++) {
b65e5048 1453 digits->SetData(row,col,time,signals->GetData(row,col,time));
625f5260 1454 } // for: time
1455 } // for: col
1456 } // for: row
b65e5048 1457
625f5260 1458 return kTRUE;
abaf1f1d 1459
625f5260 1460}
abaf1f1d 1461
625f5260 1462//_____________________________________________________________________________
1463Bool_t AliTRDdigitizer::SDigits2Digits()
1464{
1465 //
1466 // Merges the input s-digits and converts them to normal digits
1467 //
e23fbb27 1468
625f5260 1469 if (!MergeSDigits()) {
1470 return kFALSE;
1471 }
f7336fa3 1472
625f5260 1473 return ConvertSDigits();
f7336fa3 1474
1475}
1476
16bf9884 1477//_____________________________________________________________________________
abaf1f1d 1478Bool_t AliTRDdigitizer::MergeSDigits()
16bf9884 1479{
1480 //
abaf1f1d 1481 // Merges the input s-digits:
1482 // - The amplitude of the different inputs are summed up.
1483 // - Of the track IDs from the input dictionaries only one is
1484 // kept for each input. This works for maximal 3 different merged inputs.
16bf9884 1485 //
1486
abaf1f1d 1487 // Number of track dictionary arrays
1488 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1489
4d18a639 1490 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 1491 if (!simParam) {
4329977a 1492 AliFatal("Could not get simulation parameters");
3551db50 1493 return kFALSE;
1494 }
1495
4d18a639 1496 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1497 if (!calibration) {
4329977a 1498 AliFatal("Could not get calibration object");
3551db50 1499 return kFALSE;
1500 }
1501
abaf1f1d 1502 Int_t iDict = 0;
e23fbb27 1503 Int_t jDict = 0;
abaf1f1d 1504
b65e5048 1505 AliTRDarraySignal *digitsA;
1506 AliTRDarraySignal *digitsB;
1507 AliTRDarrayDictionary *dictionaryA[kNDict];
1508 AliTRDarrayDictionary *dictionaryB[kNDict];
abaf1f1d 1509
b65e5048 1510 AliTRDdigitsManager *mergeSDigitsManager = 0x0;
abaf1f1d 1511 // Get the first s-digits
1512 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
9afbd7de 1513 if (!fSDigitsManager) {
7925de54 1514 AliError("No SDigits manager");
9afbd7de 1515 return kFALSE;
1516 }
abaf1f1d 1517
1518 // Loop through the other sets of s-digits
b65e5048 1519 mergeSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->After(fSDigitsManager);
abaf1f1d 1520
9afbd7de 1521 if (mergeSDigitsManager) {
7925de54 1522 AliDebug(1,Form("Merge %d input files.",fSDigitsManagerList->GetSize()));
9afbd7de 1523 }
1524 else {
7925de54 1525 AliDebug(1,"Only one input file.");
abaf1f1d 1526 }
3551db50 1527
b65e5048 1528 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
abaf1f1d 1529 Int_t iMerge = 0;
b65e5048 1530
abaf1f1d 1531 while (mergeSDigitsManager) {
1532
1533 iMerge++;
b65e5048 1534
abaf1f1d 1535 // Loop through the detectors
1536 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1537
625f5260 1538 Int_t nRowMax = fGeo->GetPadPlane(iDet)->GetNrows();
1539 Int_t nColMax = fGeo->GetPadPlane(iDet)->GetNcols();
b65e5048 1540
abaf1f1d 1541 // Loop through the pixels of one detector and add the signals
b65e5048 1542 digitsA = (AliTRDarraySignal *) fSDigitsManager->GetSDigits(iDet);
1543 digitsB = (AliTRDarraySignal *) mergeSDigitsManager->GetSDigits(iDet);
1544 digitsA->Expand();
1545 if (!digitsA->HasData()) continue;
1546 digitsB->Expand();
1547 if (!digitsB->HasData()) continue;
1548
abaf1f1d 1549 for (iDict = 0; iDict < kNDict; iDict++) {
b65e5048 1550 dictionaryA[iDict] = (AliTRDarrayDictionary *) fSDigitsManager->GetDictionary(iDet,iDict);
1551 dictionaryB[iDict] = (AliTRDarrayDictionary *) mergeSDigitsManager->GetDictionary(iDet,iDict);
1552 dictionaryA[iDict]->Expand();
abaf1f1d 1553 dictionaryB[iDict]->Expand();
1554 }
1555
4487dad0 1556 // Merge only detectors that contain a signal
1557 Bool_t doMerge = kTRUE;
1558 if (fMergeSignalOnly) {
b65e5048 1559 if (digitsA->GetOverThreshold(0) == 0) {
1560 doMerge = kFALSE;
4487dad0 1561 }
abaf1f1d 1562 }
b65e5048 1563
4487dad0 1564 if (doMerge) {
b65e5048 1565
1566 AliDebug(1,Form("Merge detector %d of input no.%d",iDet,iMerge+1));
1567
1568 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1569 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1570 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1571
4487dad0 1572 // Add the amplitudes of the summable digits
b65e5048 1573 Float_t ampA = digitsA->GetData(iRow,iCol,iTime);
1574 Float_t ampB = digitsB->GetData(iRow,iCol,iTime);
1575 ampA += ampB;
1576 digitsA->SetData(iRow,iCol,iTime,ampA);
1577
1578 // Add the mask to the track id if defined.
1579 for (iDict = 0; iDict < kNDict; iDict++) {
1580 Int_t trackB = dictionaryB[iDict]->GetData(iRow,iCol,iTime);
1581 if ((fMasks) && (trackB > 0)) {
1582 for (jDict = 0; jDict < kNDict; jDict++) {
1583 Int_t trackA = dictionaryA[iDict]->GetData(iRow,iCol,iTime);
1584 if (trackA == 0) {
1585 trackA = trackB + fMasks[iMerge];
1586 dictionaryA[iDict]->SetData(iRow,iCol,iTime,trackA);
625f5260 1587 } // if: track A == 0
b65e5048 1588 } // for: jDict
1589 } // if: fMasks and trackB > 0
625f5260 1590 } // for: iDict
abaf1f1d 1591
625f5260 1592 } // for: iTime
1593 } // for: iCol
1594 } // for: iRow
4487dad0 1595
625f5260 1596 } // if: doMerge
1597
1598 mergeSDigitsManager->RemoveDigits(iDet);
1599 mergeSDigitsManager->RemoveDictionaries(iDet);
b65e5048 1600
abaf1f1d 1601 if (fCompress) {
b65e5048 1602 digitsA->Compress(0);
1603 for (iDict = 0; iDict < kNDict; iDict++) {
1604 dictionaryA[iDict]->Compress();
abaf1f1d 1605 }
1606 }
b65e5048 1607
625f5260 1608 } // for: detectors
b65e5048 1609
abaf1f1d 1610 // The next set of s-digits
b65e5048 1611 mergeSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->After(mergeSDigitsManager);
1612
625f5260 1613 } // while: mergeDigitsManagers
b65e5048 1614
625f5260 1615 return kTRUE;
1616
1617}
1618
1619//_____________________________________________________________________________
1620Bool_t AliTRDdigitizer::ConvertSDigits()
1621{
1622 //
1623 // Converts s-digits to normal digits
1624 //
1625
b65e5048 1626 AliTRDarraySignal *digitsIn = 0x0;
625f5260 1627
1628 if (!fSDigitsManager->HasSDigits()) {
1629 AliError("No s-digits in digits manager");
1630 return kFALSE;
abaf1f1d 1631 }
1632
625f5260 1633 // Loop through the detectors
1634 for (Int_t det = 0; det < AliTRDgeometry::Ndet(); det++) {
1635
1636 // Get the merged s-digits (signals)
b65e5048 1637 digitsIn = (AliTRDarraySignal *) fSDigitsManager->GetSDigits(det);
625f5260 1638 if (!digitsIn->HasData()) {
1639 AliDebug(2,Form("No digits for det=%d",det));
1640 continue;
1641 }
1642
1643 // Convert the merged sdigits to digits
1644 if (!Signal2ADC(det,digitsIn)) {
1645 continue;
1646 }
1647
1648 // Copy the dictionary information to the output array
1649 if (!CopyDictionary(det)) {
1650 continue;
1651 }
1652
1653 // Delete
1654 fSDigitsManager->RemoveDigits(det);
1655 fSDigitsManager->RemoveDictionaries(det);
1656
1657 // Compress the arrays
1658 CompressOutputArrays(det);
1659
1660 } // for: detector numbers
1661
16bf9884 1662 return kTRUE;
1663
1664}
1665
abaf1f1d 1666//_____________________________________________________________________________
625f5260 1667Bool_t AliTRDdigitizer::CopyDictionary(Int_t det)
abaf1f1d 1668{
1669 //
625f5260 1670 // Copies the dictionary information from the s-digits arrays
1671 // to the output arrays
abaf1f1d 1672 //
1673
625f5260 1674 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
1675 if (!calibration) {
1676 AliFatal("Could not get calibration object");
4d18a639 1677 return kFALSE;
1678 }
abaf1f1d 1679
625f5260 1680 AliDebug(1,Form("Start copying dictionaries for detector=%d",det));
1681
1682 const Int_t kNDict = AliTRDdigitsManager::kNDict;
b65e5048 1683 AliTRDarrayDictionary *dictionaryIn[kNDict];
1684 AliTRDarrayDictionary *dictionaryOut[kNDict];
625f5260 1685
1686 Int_t nRowMax = fGeo->GetPadPlane(det)->GetNrows();
1687 Int_t nColMax = fGeo->GetPadPlane(det)->GetNcols();
1688 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1689
1690 Int_t row = 0;
1691 Int_t col = 0;
1692 Int_t time = 0;
1693 Int_t dict = 0;
1694
1695 for (dict = 0; dict < kNDict; dict++) {
1696
b65e5048 1697 dictionaryIn[dict] = (AliTRDarrayDictionary *) fSDigitsManager->GetDictionary(det,dict);
625f5260 1698 dictionaryIn[dict]->Expand();
b65e5048 1699 dictionaryOut[dict] = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
625f5260 1700 dictionaryOut[dict]->Allocate(nRowMax,nColMax,nTimeTotal);
1701
1702 for (row = 0; row < nRowMax; row++) {
1703 for (col = 0; col < nColMax; col++) {
1704 for (time = 0; time < nTimeTotal; time++) {
b65e5048 1705 Int_t track = dictionaryIn[dict]->GetData(row,col,time);
1706 dictionaryOut[dict]->SetData(row,col,time,track);
625f5260 1707 } // for: time
1708 } // for: col
1709 } // for: row
b65e5048 1710
625f5260 1711 } // for: dictionaries
b65e5048 1712
625f5260 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;
b65e5048 1725 AliTRDarrayDictionary *dictionary = 0x0;
625f5260 1726
1727 if (fCompress) {
1728
b65e5048 1729 if (!fSDigits) {
1730 AliTRDarrayADC *digits = 0x0;
1731 digits = (AliTRDarrayADC *) fDigitsManager->GetDigits(det);
1732 digits->Compress();
1733 }
1734
1735 if (fSDigits) {
1736 AliTRDarraySignal *digits = 0x0;
1737 digits = (AliTRDarraySignal *) fDigitsManager->GetSDigits(det);
1738 digits->Compress(0);
1739 }
1740
625f5260 1741 for (Int_t dict = 0; dict < kNDict; dict++) {
b65e5048 1742 dictionary = (AliTRDarrayDictionary *) fDigitsManager->GetDictionary(det,dict);
1743 dictionary->Compress();
625f5260 1744 }
1745
1746 }
abaf1f1d 1747
1748}
1749
f7336fa3 1750//_____________________________________________________________________________
0a29d0f1 1751Bool_t AliTRDdigitizer::WriteDigits() const
f7336fa3 1752{
1753 //
1754 // Writes out the TRD-digits and the dictionaries
1755 //
1756
4d18a639 1757 // Write parameters
bdbb05bb 1758 fRunLoader->CdGAFile();
bdbb05bb 1759
da581aea 1760 // Store the digits and the dictionary in the tree
abaf1f1d 1761 return fDigitsManager->WriteDigits();
f7336fa3 1762
1763}
793ff80c 1764
8e64dd77 1765//_____________________________________________________________________________
88cb7938 1766void AliTRDdigitizer::InitOutput(Int_t iEvent)
8e64dd77 1767{
1768 //
1769 // Initializes the output branches
1770 //
1771
1772 fEvent = iEvent;
88cb7938 1773
9afbd7de 1774 if (!fRunLoader) {
1775 AliError("Run Loader is NULL");
1776 return;
1777 }
1778
4329977a 1779 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 1780 if (!loader) {
1781 AliError("Can not get TRD loader from Run Loader");
1782 return;
1783 }
88cb7938 1784
4d18a639 1785 TTree *tree = 0;
88cb7938 1786
9afbd7de 1787 if (fSDigits) {
1788 // If we produce SDigits
88cb7938 1789 tree = loader->TreeS();
9afbd7de 1790 if (!tree) {
88cb7938 1791 loader->MakeTree("S");
1792 tree = loader->TreeS();
9afbd7de 1793 }
1794 }
1795 else {
1796 // If we produce Digits
1797 tree = loader->TreeD();
1798 if (!tree) {
1799 loader->MakeTree("D");
1800 tree = loader->TreeD();
1801 }
1802 }
88cb7938 1803 fDigitsManager->SetEvent(iEvent);
1804 fDigitsManager->MakeBranch(tree);
8e64dd77 1805
1806}
3551db50 1807
1808//_____________________________________________________________________________
1809Double_t AliTRDdigitizer::TimeStruct(Float_t vdrift, Double_t dist, Double_t z)
1810{
1811 //
1812 // Applies the time structure of the drift cells (by C.Lippmann).
1813 // The drift time of electrons to the anode wires depends on the
1814 // distance to the wire (z) and on the position in the drift region.
1815 //
1816 // input :
1817 // dist = radial distance from (cathode) pad plane [cm]
1818 // z = distance from anode wire (parallel to cathode planes) [cm]
1819 //
1820 // output :
1821 // tdrift = the drift time of an electron at the given position
1822 //
1823 // We interpolate between the drift time values at the two drift
1824 // velocities fVDlo and fVDhi, being smaller and larger than
1825 // fDriftVelocity. We use the two stored drift time maps fTimeStruct1
1826 // and fTimeStruct2, calculated for the two mentioned drift velocities.
1827 //
1828
1829 SampleTimeStruct(vdrift);
1830
4d18a639 1831 // Indices:
1832 Int_t r1 = (Int_t)(10 * dist);
9afbd7de 1833 if (r1 < 0) r1 = 0;
1834 if (r1 > 37) r1 = 37;
1835 Int_t r2 = r1 + 1;
1836 if (r2 < 0) r2 = 0;
1837 if (r2 > 37) r2 = 37;
1838 const Int_t kz1 = ((Int_t)(100 * z / 2.5));
1839 const Int_t kz2 = kz1 + 1;
1840
4d18a639 1841 if ((r1 < 0) ||
1842 (r1 > 37) ||
1843 (kz1 < 0) ||
1844 (kz1 > 10)) {
7925de54 1845 AliWarning(Form("Indices out of range: dist=%.2f, z=%.2f, r1=%d, kz1=%d"
9afbd7de 1846 ,dist,z,r1,kz1));
3551db50 1847 }
1848
4d18a639 1849 const Float_t ky111 = fTimeStruct1[r1+38*kz1];
9afbd7de 1850 const Float_t ky221 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1851 ? fTimeStruct1[r2+38*kz2]
1852 : fTimeStruct1[37+38*10];
9afbd7de 1853 const Float_t ky121 = (kz2 <= 10)
4d18a639 1854 ? fTimeStruct1[r1+38*kz2]
1855 : fTimeStruct1[r1+38*10];
9afbd7de 1856 const Float_t ky211 = (r2 <= 37)
4d18a639 1857 ? fTimeStruct1[r2+38*kz1]
1858 : fTimeStruct1[37+38*kz1];
3551db50 1859
4d18a639 1860 const Float_t ky112 = fTimeStruct2[r1+38*kz1];
9afbd7de 1861 const Float_t ky222 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1862 ? fTimeStruct2[r2+38*kz2]
1863 : fTimeStruct2[37+38*10];
9afbd7de 1864 const Float_t ky122 = (kz2 <= 10)
4d18a639 1865 ? fTimeStruct2[r1+38*kz2]
1866 : fTimeStruct2[r1+38*10];
9afbd7de 1867 const Float_t ky212 = (r2 <= 37)
4d18a639 1868 ? fTimeStruct2[r2+38*kz1]
1869 : fTimeStruct2[37+38*kz1];
3551db50 1870
26d3c914 1871 // Interpolation in dist-directions, lower drift time map
1872 const Float_t ky11 = (ky211-ky111)*10*dist + ky111 - (ky211-ky111)*r1;
1873 const Float_t ky21 = (ky221-ky121)*10*dist + ky121 - (ky221-ky121)*r1;
1874
1875 // Interpolation in dist-direction, larger drift time map
3551db50 1876 const Float_t ky12 = (ky212-ky112)*10*dist + ky112 - (ky212-ky112)*r1;
1877 const Float_t ky22 = (ky222-ky122)*10*dist + ky122 - (ky222-ky122)*r1;
1878
4d18a639 1879 // Dist now is the drift distance to the anode wires (negative if electrons are
3551db50 1880 // between anode wire plane and cathode pad plane)
9afbd7de 1881 dist -= AliTRDgeometry::AmThick() / 2.0;
3551db50 1882
26d3c914 1883 // Interpolation in z-directions, lower drift time map
9afbd7de 1884 const Float_t ktdrift1 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1885 ? (ky21 - ky11) * 100 * z / 2.5 + ky11 - (ky21 - ky11) * kz1
1886 : 0.0;
26d3c914 1887 // Interpolation in z-directions, larger drift time map
9afbd7de 1888 const Float_t ktdrift2 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1889 ? (ky22 - ky12) * 100 * z / 2.5 + ky12 - (ky22 - ky12) * kz1
1890 : 0.0;
3551db50 1891
26d3c914 1892 // Interpolation between the values at fVDlo and fVDhi
1893 Float_t a = (ktdrift2 - ktdrift1) / (fVDhi - fVDlo);
4d18a639 1894 Float_t b = ktdrift2 - a * fVDhi;
26d3c914 1895 Float_t t = a * vdrift + b;
3551db50 1896
26d3c914 1897 return t;
3551db50 1898
1899}
1900
1901//_____________________________________________________________________________
1902void AliTRDdigitizer::SampleTimeStruct(Float_t vdrift)
1903{
1904 //
1905 // Samples the timing structure of a drift cell
1906 // Drift Time data calculated with Garfield (by C.Lippmann)
1907 //
1908
4329977a 1909 // Nothing to do
4d18a639 1910 if (vdrift == fTimeLastVdrift) {
3551db50 1911 return;
9afbd7de 1912 }
4d18a639 1913 fTimeLastVdrift = vdrift;
3551db50 1914
9afbd7de 1915 // Drift time maps are saved for some drift velocity values (in drift region):
3551db50 1916 Float_t fVDsmp[8];
1917 fVDsmp[0] = 1.032;
1918 fVDsmp[1] = 1.158;
1919 fVDsmp[2] = 1.299;
1920 fVDsmp[3] = 1.450;
1921 fVDsmp[4] = 1.610;
1922 fVDsmp[5] = 1.783;
1923 fVDsmp[6] = 1.959;
1924 fVDsmp[7] = 2.134;
1925
9afbd7de 1926 if (vdrift < fVDsmp[0]) {
7925de54 1927 AliWarning(Form("Drift Velocity too small (%.3f<%.3f)",vdrift,fVDsmp[0]));
3551db50 1928 vdrift = fVDsmp[0];
9afbd7de 1929 }
1930 else if (vdrift > fVDsmp[7]) {
7925de54 1931 AliWarning(Form("Drift Velocity too large (%.3f>%.3f)",vdrift,fVDsmp[6]));
3551db50 1932 vdrift = fVDsmp[7];
1933 }
1934
1935 const Int_t ktimebin = 38;
9afbd7de 1936 const Int_t kZbin = 11;
3551db50 1937
1938 // Garfield simulation at UD = -1500V; vd = 1.032cm/microsec, <driftfield> = 525V/cm
1939 Float_t time1500[ktimebin][kZbin] =
1940 {{0.09170, 0.09205, 0.09306, 0.09475, 0.09716, 0.10035,
1941 0.10445, 0.10993, 0.11838, 0.13986, 0.37858},
1942 {0.06588, 0.06626, 0.06739, 0.06926, 0.07186, 0.07524,
1943 0.07951, 0.08515, 0.09381, 0.11601, 0.35673},
1944 {0.03946, 0.04003, 0.04171, 0.04435, 0.04780, 0.05193,
1945 0.05680, 0.06306, 0.07290, 0.09873, 0.34748},
1946 {0.01151, 0.01283, 0.01718, 0.02282, 0.02880, 0.03479,
1947 0.04098, 0.04910, 0.06413, 0.10567, 0.36897},
1948 {0.01116, 0.01290, 0.01721, 0.02299, 0.02863, 0.03447,
1949 0.04074, 0.04984, 0.06839, 0.11625, 0.37277},
1950 {0.03919, 0.03974, 0.04131, 0.04380, 0.04703, 0.05102,
1951 0.05602, 0.06309, 0.07651, 0.10938, 0.36838},
1952 {0.06493, 0.06560, 0.06640, 0.06802, 0.07051, 0.07392,
1953 0.07853, 0.08510, 0.09690, 0.12621, 0.38058},
1954 {0.09174, 0.09186, 0.09225, 0.09303, 0.09477, 0.00000,
1955 0.11205, 0.11952, 0.13461, 0.16984, 0.43017},
1956 {0.14356, 0.14494, 0.14959, 0.16002, 0.18328, 0.27981,
1957 0.22785, 0.21240, 0.21948, 0.25965, 0.52392},
1958 {0.23120, 0.23366, 0.24046, 0.25422, 0.28071, 0.36914,
1959 0.32999, 0.31208, 0.31772, 0.35804, 0.62249},
1960 {0.32686, 0.32916, 0.33646, 0.35053, 0.37710, 0.46292,
1961 0.42773, 0.40948, 0.41497, 0.45527, 0.71955},
1962 {0.42353, 0.42583, 0.43317, 0.44727, 0.47380, 0.55884,
1963 0.52479, 0.50650, 0.51194, 0.55225, 0.81658},
1964 {0.52038, 0.52271, 0.53000, 0.54415, 0.57064, 0.65545,
1965 0.62172, 0.60341, 0.60885, 0.64915, 0.91339},
1966 {0.61724, 0.61953, 0.62694, 0.64098, 0.66756, 0.75226,
1967 0.71862, 0.70030, 0.70575, 0.74604, 1.01035},
1968 {0.71460, 0.71678, 0.72376, 0.73786, 0.76447, 0.84913,
1969 0.81551, 0.79720, 0.80264, 0.84292, 1.10723},
1970 {0.81101, 0.81334, 0.82066, 0.83475, 0.86127, 0.94599,
1971 0.91240, 0.89408, 0.89952, 0.93981, 1.20409},
1972 {0.90788, 0.91023, 0.91752, 0.93163, 0.95815, 1.04293,
1973 1.00929, 0.99096, 0.99640, 1.03669, 1.30106},
1974 {1.00477, 1.00707, 1.01449, 1.02852, 1.05504, 1.13976,
1975 1.10617, 1.08784, 1.09329, 1.13358, 1.39796},
1976 {1.10166, 1.10397, 1.11130, 1.12541, 1.15257, 1.23672,
1977 1.20307, 1.18472, 1.19018, 1.23046, 1.49486},
1978 {1.19854, 1.20084, 1.20818, 1.22235, 1.24885, 1.33355,
1979 1.29992, 1.28156, 1.28707, 1.32735, 1.59177},
1980 {1.29544, 1.29780, 1.30507, 1.31917, 1.34575, 1.43073,
1981 1.39681, 1.37851, 1.38396, 1.42377, 1.68854},
1982 {1.39236, 1.39462, 1.40205, 1.41607, 1.44259, 1.52745,
1983 1.49368, 1.47541, 1.48083, 1.52112, 1.78546},
1984 {1.49314, 1.49149, 1.49885, 1.51297, 1.53949, 1.62420,
1985 1.59016, 1.57231, 1.57772, 1.61800, 1.88048},
1986 {1.58610, 1.58839, 1.59572, 1.60983, 1.63635, 1.72109,
1987 1.68651, 1.66921, 1.67463, 1.71489, 1.97918},
1988 {1.68400, 1.68529, 1.69261, 1.70671, 1.73331, 1.81830,
1989 1.78341, 1.76605, 1.77150, 1.81179, 2.07608},
1990 {1.77991, 1.78215, 1.78952, 1.80385, 1.83014, 1.91486,
1991 1.88128, 1.86215, 1.86837, 1.90865, 2.17304},
1992 {1.87674, 1.87904, 1.88647, 1.90052, 1.92712, 2.01173,
1993 1.97812, 1.95905, 1.96527, 2.00710, 2.26979},
1994 {1.97369, 1.97594, 1.98326, 1.99869, 2.02442, 2.10865,
1995 2.07501, 2.05666, 2.06214, 2.10243, 2.36669},
1996 {2.07052, 2.07281, 2.08016, 2.09425, 2.12132, 2.20555,
1997 2.17182, 2.15341, 2.15904, 2.19933, 2.46363},
1998 {2.16742, 2.16971, 2.17707, 2.19114, 2.21766, 2.30240,
1999 2.26877, 2.25015, 2.25573, 2.29586, 2.56060},
2000 {2.26423, 2.26659, 2.27396, 2.28803, 2.31456, 2.40828,
2001 2.36567, 2.34705, 2.35282, 2.39765, 2.65744},
2002 {2.36153, 2.36349, 2.37330, 2.38501, 2.41159, 2.49940,
2003 2.46257, 2.44420, 2.44843, 2.48987, 2.75431},
2004 {2.46558, 2.46035, 2.46822, 2.48181, 2.50849, 2.59630,
2005 2.55947, 2.54112, 2.54513, 2.58677, 2.85094},
2006 {2.56248, 2.55723, 2.56486, 2.57871, 2.60520, 2.68998,
2007 2.65626, 2.63790, 2.64316, 2.68360, 2.94813},
2008 {2.65178, 2.65441, 2.66153, 2.67556, 2.70210, 2.78687,
2009 2.75319, 2.73463, 2.74032, 2.78060, 3.04503},
2010 {2.74868, 2.75131, 2.75870, 2.77245, 2.79385, 2.88700,
2011 2.85009, 2.83177, 2.83723, 2.87750, 3.14193},
2012 {2.84574, 2.84789, 2.85560, 2.86935, 2.89075, 2.98060,
2013 2.94576, 2.92868, 2.93356, 2.97436, 3.23868},
2014 {2.94239, 2.94469, 2.95221, 2.96625, 2.99345, 3.07747,
2015 3.04266, 3.02545, 3.03051, 3.07118, 3.33555}};
2016
2017 // Garfield simulation at UD = -1600V; vd = 1.158cm/microsec, <driftfield> = 558V/cm
2018 Float_t time1600[ktimebin][kZbin] =
2019 {{0.09169, 0.09203, 0.09305, 0.09473, 0.09714, 0.10032,
2020 0.10441, 0.10990, 0.11835, 0.13986, 0.37845},
2021 {0.06589, 0.06626, 0.06738, 0.06924, 0.07184, 0.07521,
2022 0.07947, 0.08512, 0.09379, 0.11603, 0.35648},
2023 {0.03947, 0.04003, 0.04171, 0.04434, 0.04778, 0.05190,
2024 0.05678, 0.06304, 0.07292, 0.09876, 0.34759},
2025 {0.01111, 0.01281, 0.01718, 0.02281, 0.02879, 0.03477,
2026 0.04097, 0.04910, 0.06415, 0.10573, 0.36896},
2027 {0.01120, 0.01311, 0.01721, 0.02279, 0.02862, 0.03446,
2028 0.04074, 0.04981, 0.06825, 0.11595, 0.37255},
2029 {0.03919, 0.03980, 0.04132, 0.04380, 0.04704, 0.05102,
2030 0.05602, 0.06302, 0.07633, 0.10896, 0.36743},
2031 {0.06531, 0.06528, 0.06631, 0.06805, 0.07053, 0.07392,
2032 0.07853, 0.08505, 0.09669, 0.12578, 0.37967},
2033 {0.09157, 0.09171, 0.09216, 0.09301, 0.09475, 0.00000,
2034 0.11152, 0.11879, 0.13352, 0.16802, 0.42750},
2035 {0.13977, 0.14095, 0.14509, 0.15433, 0.17534, 0.26406,
2036 0.21660, 0.20345, 0.21113, 0.25067, 0.51434},
2037 {0.21816, 0.22041, 0.22631, 0.23850, 0.26208, 0.34340,
2038 0.30755, 0.29237, 0.29878, 0.33863, 0.60258},
2039 {0.30344, 0.30547, 0.31241, 0.32444, 0.34809, 0.42696,
2040 0.39464, 0.37919, 0.38546, 0.42530, 0.68926},
2041 {0.38969, 0.39164, 0.39810, 0.41059, 0.43441, 0.51246,
2042 0.48112, 0.46562, 0.47191, 0.51172, 0.77558},
2043 {0.47592, 0.47799, 0.48442, 0.49689, 0.52061, 0.59855,
2044 0.56752, 0.55201, 0.55826, 0.59808, 0.86202},
2045 {0.56226, 0.56428, 0.57074, 0.58324, 0.60696, 0.68483,
2046 0.65388, 0.63837, 0.64461, 0.68445, 0.94830},
2047 {0.64881, 0.65063, 0.65709, 0.66958, 0.69331, 0.77117,
2048 0.74023, 0.72472, 0.73098, 0.77079, 1.03486},
2049 {0.73506, 0.73698, 0.74344, 0.75596, 0.77964, 0.85751,
2050 0.82658, 0.81107, 0.81731, 0.85712, 1.12106},
2051 {0.82132, 0.82333, 0.82979, 0.84228, 0.86608, 0.94386,
2052 0.91293, 0.89742, 0.90367, 0.94335, 1.20737},
2053 {0.90767, 0.90968, 0.91614, 0.92863, 0.95236, 1.03021,
2054 0.99928, 0.98377, 0.99001, 1.02984, 1.29371},
2055 {0.99410, 0.99602, 1.00257, 1.01498, 1.03869, 1.11720,
2056 1.08563, 1.07011, 1.07637, 1.11621, 1.37873},
2057 {1.08036, 1.08240, 1.08884, 1.10138, 1.12504, 1.20301,
2058 1.17198, 1.15647, 1.16272, 1.20255, 1.46651},
2059 {1.16670, 1.16872, 1.17525, 1.18783, 1.21139, 1.28934,
2060 1.25833, 1.24281, 1.24909, 1.28889, 1.55275},
2061 {1.25307, 1.25510, 1.26153, 1.27404, 1.29773, 1.37584,
2062 1.34469, 1.32916, 1.33536, 1.37524, 1.63915},
2063 {1.33942, 1.34146, 1.34788, 1.36040, 1.38410, 1.46438,
2064 1.43105, 1.41537, 1.42176, 1.46158, 1.72538},
2065 {1.42579, 1.42782, 1.43458, 1.44674, 1.47043, 1.55085,
2066 1.51675, 1.50168, 1.50810, 1.54793, 1.81174},
2067 {1.51207, 1.51454, 1.52060, 1.53307, 1.55684, 1.63478,
2068 1.60336, 1.58820, 1.59446, 1.63414, 1.89814},
2069 {1.59856, 1.60047, 1.60693, 1.61942, 1.64317, 1.72257,
2070 1.69008, 1.67454, 1.68080, 1.72063, 1.98433},
2071 {1.68481, 1.68682, 1.69330, 1.70584, 1.72949, 1.80752,
2072 1.77643, 1.76089, 1.76716, 1.80692, 2.07069},
2073 {1.77117, 1.77319, 1.77969, 1.79260, 1.81583, 1.89376,
2074 1.86226, 1.84720, 1.85355, 1.89256, 2.15343},
2075 {1.85748, 1.85967, 1.86605, 1.87848, 1.90222, 1.98010,
2076 1.94913, 1.93271, 1.93981, 1.97968, 2.24355},
2077 {1.94386, 1.94587, 1.95233, 1.96484, 1.98854, 2.06646,
2078 2.03542, 2.01755, 2.02617, 2.06604, 2.32993},
2079 {2.03022, 2.03230, 2.03868, 2.05134, 2.07488, 2.15367,
2080 2.12178, 2.10391, 2.11252, 2.15432, 2.41623},
2081 {2.11656, 2.11857, 2.12505, 2.13772, 2.16147, 2.23919,
2082 2.20817, 2.19265, 2.20744, 2.23872, 2.49996},
2083 {2.20291, 2.20611, 2.21137, 2.22387, 2.24758, 2.32563,
2084 2.29450, 2.27901, 2.28525, 2.32507, 2.58897},
2085 {2.28922, 2.29172, 2.29774, 2.31345, 2.33400, 2.41287,
2086 2.38086, 2.36535, 2.37160, 2.40869, 2.67113},
2087 {2.37572, 2.37764, 2.38410, 2.39803, 2.42046, 2.49817,
2088 2.46721, 2.45171, 2.45794, 2.49505, 2.76061},
2089 {2.46190, 2.46396, 2.47043, 2.48340, 2.50665, 2.58453,
2090 2.55357, 2.53728, 2.54430, 2.58407, 2.84816},
2091 {2.54833, 2.55032, 2.55679, 2.56976, 2.59312, 2.67103,
2092 2.63993, 2.62364, 2.63062, 2.67040, 2.93444},
2093 {2.63456, 2.63660, 2.64304, 2.65555, 2.67938, 2.75739,
2094 2.72629, 2.71064, 2.71688, 2.75671, 3.01886}};
2095
2096 // Garfield simulation at UD = -1700V; vd = 1.299cm/microsec, <driftfield> = 590V/cm
2097 Float_t time1700[ktimebin][kZbin] =
2098 {{0.09167, 0.09201, 0.09302, 0.09471, 0.09712, 0.10029,
2099 0.10438, 0.10986, 0.11832, 0.13986, 0.37824},
2100 {0.06591, 0.06626, 0.06736, 0.06923, 0.07183, 0.07519,
2101 0.07944, 0.08511, 0.09378, 0.11603, 0.35625},
2102 {0.03946, 0.04003, 0.04170, 0.04433, 0.04777, 0.05189,
2103 0.05676, 0.06301, 0.07291, 0.09880, 0.34724},
2104 {0.01110, 0.01281, 0.01718, 0.02280, 0.02879, 0.03476,
2105 0.04096, 0.04910, 0.06417, 0.10582, 0.36861},
2106 {0.01115, 0.01294, 0.01721, 0.02276, 0.02862, 0.03447,
2107 0.04074, 0.04980, 0.06812, 0.11565, 0.37231},
2108 {0.03920, 0.03974, 0.04133, 0.04381, 0.04706, 0.05105,
2109 0.05603, 0.06299, 0.07618, 0.10860, 0.36646},
2110 {0.06498, 0.06529, 0.06634, 0.06808, 0.07055, 0.07395,
2111 0.07852, 0.08500, 0.09650, 0.12532, 0.37850},
2112 {0.09143, 0.09159, 0.09207, 0.09297, 0.09473, 0.00000,
2113 0.11102, 0.11809, 0.13245, 0.16627, 0.42496},
2114 {0.13646, 0.13750, 0.14112, 0.14926, 0.16806, 0.24960,
2115 0.20627, 0.19536, 0.20366, 0.24256, 0.50557},
2116 {0.20678, 0.20848, 0.21384, 0.22450, 0.24552, 0.32018,
2117 0.28740, 0.27477, 0.28196, 0.32128, 0.58475},
2118 {0.28287, 0.28461, 0.29020, 0.30108, 0.32224, 0.39467,
2119 0.36500, 0.35217, 0.35926, 0.39860, 0.66194},
2120 {0.35972, 0.36145, 0.36713, 0.37797, 0.39912, 0.47091,
2121 0.44212, 0.42925, 0.43632, 0.47563, 0.73892},
2122 {0.43667, 0.43841, 0.44413, 0.45494, 0.47607, 0.54780,
2123 0.51912, 0.50627, 0.51334, 0.55254, 0.81595},
2124 {0.51365, 0.51540, 0.52101, 0.53193, 0.55305, 0.62463,
2125 0.59617, 0.58328, 0.59035, 0.62965, 0.89303},
2126 {0.59064, 0.59240, 0.59801, 0.60893, 0.63009, 0.70169,
2127 0.67317, 0.66028, 0.66735, 0.70666, 0.96995},
2128 {0.66765, 0.66939, 0.67501, 0.68592, 0.70724, 0.77863,
2129 0.75016, 0.73728, 0.74435, 0.78366, 1.04696},
2130 {0.74464, 0.74636, 0.75200, 0.76293, 0.78405, 0.85561,
2131 0.82716, 0.81427, 0.82133, 0.86064, 1.12396},
2132 {0.82165, 0.82340, 0.82902, 0.83991, 0.86104, 0.93266,
2133 0.90414, 0.89128, 0.89834, 0.93763, 1.20100},
2134 {0.89863, 0.90042, 0.90659, 0.91705, 0.93805, 1.00960,
2135 0.98115, 0.96825, 0.97533, 1.01462, 1.27801},
2136 {0.97563, 0.97740, 0.98310, 0.99391, 1.01504, 1.08659,
2137 1.05814, 1.04526, 1.05233, 1.09163, 1.35503},
2138 {1.05276, 1.05451, 1.06002, 1.07090, 1.09099, 1.16357,
2139 1.13516, 1.12225, 1.12933, 1.16863, 1.43195},
2140 {1.12977, 1.13138, 1.13700, 1.14792, 1.16797, 1.24061,
2141 1.21212, 1.19926, 1.20626, 1.24554, 1.50900},
2142 {1.20664, 1.20839, 1.21400, 1.22490, 1.24606, 1.31772,
2143 1.28914, 1.27382, 1.28329, 1.32262, 1.58550},
2144 {1.28367, 1.28541, 1.29099, 1.30189, 1.32312, 1.39460,
2145 1.36612, 1.34924, 1.36030, 1.39961, 1.66310},
2146 {1.36064, 1.36249, 1.36799, 1.37896, 1.40004, 1.48030,
2147 1.44314, 1.43032, 1.43731, 1.47659, 1.73442},
2148 {1.43762, 1.43937, 1.44497, 1.45618, 1.47704, 1.54932,
2149 1.52012, 1.50725, 1.51430, 1.55357, 1.81708},
2150 {1.51462, 1.51937, 1.52203, 1.53316, 1.55403, 1.62572,
2151 1.59713, 1.58424, 1.59128, 1.63061, 1.89406},
2152 {1.59162, 1.59338, 1.59947, 1.60989, 1.63103, 1.70270,
2153 1.67411, 1.66124, 1.66799, 1.70759, 1.97103},
2154 {1.66874, 1.67037, 1.67597, 1.68687, 1.70814, 1.77969,
2155 1.75112, 1.73806, 1.74530, 1.78457, 2.04794},
2156 {1.74693, 1.74749, 1.75297, 1.76476, 1.78500, 1.85667,
2157 1.82811, 1.81504, 1.82101, 1.86161, 2.12492},
2158 {1.82260, 1.82437, 1.82995, 1.84174, 1.86202, 1.93372,
2159 1.90509, 1.89202, 1.89930, 1.93859, 2.20189},
2160 {1.89964, 1.90135, 1.90693, 1.91789, 1.93952, 2.01080,
2161 1.98207, 1.96921, 1.97628, 2.01384, 2.27887},
2162 {1.97662, 1.97917, 1.98611, 1.99487, 2.01601, 2.08778,
2163 2.05846, 2.04623, 2.05330, 2.09244, 2.35585},
2164 {2.05359, 2.05615, 2.06309, 2.07187, 2.09867, 2.16459,
2165 2.13610, 2.12322, 2.13029, 2.16942, 2.43199},
2166 {2.13063, 2.13233, 2.13795, 2.14886, 2.17008, 2.24199,
2167 2.21310, 2.20020, 2.20727, 2.24659, 2.50983},
2168 {2.20761, 2.20931, 2.21955, 2.22624, 2.24708, 2.32147,
2169 2.29009, 2.27725, 2.28276, 2.32359, 2.58680},
2170 {2.28459, 2.29108, 2.29202, 2.30286, 2.32007, 2.39559,
2171 2.36683, 2.35422, 2.36119, 2.40058, 2.66081},
2172 {2.36153, 2.36806, 2.36889, 2.37985, 2.40092, 2.47828,
2173 2.44381, 2.43099, 2.43819, 2.47750, 2.73779}};
2174
2175 // Garfield simulation at UD = -1800V; vd = 1.450cm/microsec, <driftfield> = 623V/cm
2176 Float_t time1800[ktimebin][kZbin] =
2177 {{0.09166, 0.09199, 0.09300, 0.09470, 0.09709, 0.10026,
2178 0.10434, 0.10983, 0.11831, 0.13987, 0.37802},
2179 {0.06585, 0.06623, 0.06735, 0.06921, 0.07180, 0.07520,
2180 0.07941, 0.08507, 0.09376, 0.11604, 0.35624},
2181 {0.03945, 0.04004, 0.04169, 0.04432, 0.04776, 0.05187,
2182 0.05674, 0.06300, 0.07290, 0.09884, 0.34704},
2183 {0.01108, 0.01287, 0.01717, 0.02280, 0.02880, 0.03476,
2184 0.04095, 0.04909, 0.06419, 0.10589, 0.36843},
2185 {0.01115, 0.01287, 0.01720, 0.02276, 0.02862, 0.03448,
2186 0.04073, 0.04973, 0.06799, 0.11535, 0.37224},
2187 {0.03918, 0.03975, 0.04134, 0.04382, 0.04707, 0.05105,
2188 0.05603, 0.06296, 0.07605, 0.10822, 0.36560},
2189 {0.06498, 0.06532, 0.06635, 0.06809, 0.07058, 0.07395,
2190 0.07855, 0.08495, 0.09632, 0.12488, 0.37730},
2191 {0.09130, 0.09160, 0.09199, 0.09300, 0.09472, 0.00000,
2192 0.11059, 0.11747, 0.13146, 0.16462, 0.42233},
2193 {0.13364, 0.13449, 0.13767, 0.14481, 0.16147, 0.23635,
2194 0.19706, 0.18812, 0.19704, 0.23520, 0.49749},
2195 {0.19698, 0.19844, 0.20311, 0.21236, 0.23082, 0.29920,
2196 0.26936, 0.25927, 0.26732, 0.30601, 0.56871},
2197 {0.26518, 0.26670, 0.27160, 0.28099, 0.29955, 0.36597,
2198 0.33885, 0.32858, 0.33653, 0.37524, 0.63801},
2199 {0.33441, 0.33553, 0.34040, 0.34987, 0.36841, 0.43428,
2200 0.40797, 0.39763, 0.40556, 0.44425, 0.70698},
2201 {0.40296, 0.40447, 0.40934, 0.41881, 0.43737, 0.50306,
2202 0.47695, 0.46662, 0.47455, 0.51329, 0.77600},
2203 {0.47296, 0.47344, 0.47830, 0.48779, 0.50632, 0.57200,
2204 0.54593, 0.53559, 0.54351, 0.58222, 0.84489},
2205 {0.54089, 0.54264, 0.54727, 0.55673, 0.57529, 0.64094,
2206 0.61490, 0.60457, 0.61249, 0.65118, 0.91394},
2207 {0.60987, 0.61138, 0.61624, 0.62573, 0.64428, 0.70989,
2208 0.68397, 0.67354, 0.68147, 0.72015, 0.98291},
2209 {0.67883, 0.68035, 0.68521, 0.69469, 0.71324, 0.77896,
2210 0.75287, 0.74251, 0.75043, 0.78912, 1.04458},
2211 {0.74780, 0.74932, 0.75421, 0.76367, 0.78221, 0.84785,
2212 0.82185, 0.81148, 0.81941, 0.85811, 1.12085},
2213 {0.81690, 0.81830, 0.82316, 0.83263, 0.85120, 0.91683,
2214 0.89077, 0.88045, 0.88837, 0.92707, 1.18976},
2215 {0.88574, 0.88726, 0.89228, 0.90198, 0.92017, 0.98578,
2216 0.95974, 0.94947, 0.95734, 0.99604, 1.25873},
2217 {0.95493, 0.95624, 0.96110, 0.97058, 0.98913, 1.05481,
2218 1.02873, 1.01839, 1.02631, 1.06503, 1.32772},
2219 {1.02392, 1.02524, 1.03008, 1.03955, 1.05810, 1.12378,
2220 1.09757, 1.08605, 1.09530, 1.13399, 1.39669},
2221 {1.09270, 1.09418, 1.09911, 1.10854, 1.12714, 1.19281,
2222 1.16502, 1.15633, 1.16427, 1.20271, 1.46574},
2223 {1.16168, 1.16323, 1.16801, 1.17772, 1.19604, 1.26190,
2224 1.23399, 1.22531, 1.23323, 1.27194, 1.53475},
2225 {1.23061, 1.23214, 1.23698, 1.24669, 1.26503, 1.33073,
2226 1.30461, 1.29428, 1.30220, 1.34091, 1.60372},
2227 {1.29960, 1.30110, 1.30596, 1.31544, 1.33398, 1.39962,
2228 1.37228, 1.36323, 1.37121, 1.40988, 1.67273},
2229 {1.36851, 1.37007, 1.37512, 1.38441, 1.40297, 1.46865,
2230 1.44256, 1.43222, 1.44017, 1.47878, 1.74155},
2231 {1.43752, 1.43904, 1.44773, 1.45338, 1.47220, 1.53759,
2232 1.51136, 1.50119, 1.50914, 1.54775, 1.81050},
2233 {1.50646, 1.50802, 1.51288, 1.52237, 1.54097, 1.60697,
2234 1.58049, 1.57018, 1.57811, 1.61678, 1.87947},
2235 {1.57545, 1.57720, 1.58185, 1.59134, 1.60996, 1.67787,
2236 1.64929, 1.63914, 1.64707, 1.68570, 1.94851},
2237 {1.64442, 1.64617, 1.65081, 1.66035, 1.67893, 1.74684,
2238 1.71826, 1.70745, 1.71604, 1.75310, 2.01748},
2239 {1.71337, 1.71513, 1.71978, 1.72932, 1.74645, 1.81346,
2240 1.78739, 1.77642, 1.78501, 1.82151, 2.08644},
2241 {1.78238, 1.78410, 1.78876, 1.79824, 1.81678, 1.88332,
2242 1.85639, 1.84262, 1.85397, 1.89270, 2.15533},
2243 {1.85135, 1.85306, 1.85778, 1.86728, 1.88580, 1.95615,
2244 1.92536, 1.91171, 1.92283, 1.96165, 2.22428},
2245 {1.92774, 1.92184, 1.92672, 1.93618, 1.95477, 2.02048,
2246 1.99427, 1.98068, 1.99192, 2.03062, 2.29338},
2247 {1.98929, 1.99081, 1.99567, 2.00515, 2.02373, 2.08987,
2248 2.06332, 2.05249, 2.05939, 2.09928, 2.36227},
2249 {2.05829, 2.05978, 2.06464, 2.07414, 2.09272, 2.15850,
2250 2.12928, 2.12194, 2.12987, 2.16825, 2.43083},
2251 {2.12726, 2.12869, 2.13360, 2.14425, 2.16160, 2.22872,
2252 2.20118, 2.19078, 2.19876, 2.23416, 2.50007}};
2253
2254 // Garfield simulation at UD = -1900V; vd = 1.610cm/microsec, <driftfield> = 655V/cm
2255 Float_t time1900[ktimebin][kZbin] =
2256 {{0.09166, 0.09198, 0.09298, 0.09467, 0.09707, 0.10023,
2257 0.10431, 0.10980, 0.11828, 0.13988, 0.37789},
2258 {0.06584, 0.06622, 0.06735, 0.06920, 0.07179, 0.07514,
2259 0.07938, 0.08505, 0.09374, 0.11606, 0.35599},
2260 {0.03945, 0.04002, 0.04169, 0.04432, 0.04775, 0.05185,
2261 0.05672, 0.06298, 0.07290, 0.09888, 0.34695},
2262 {0.01109, 0.01281, 0.01717, 0.02279, 0.02878, 0.03476,
2263 0.04094, 0.04909, 0.06421, 0.10597, 0.36823},
2264 {0.01115, 0.01287, 0.01720, 0.02294, 0.02862, 0.03448,
2265 0.04074, 0.04973, 0.06783, 0.11506, 0.37206},
2266 {0.03940, 0.03975, 0.04135, 0.04386, 0.04708, 0.05106,
2267 0.05604, 0.06293, 0.07592, 0.10787, 0.36484},
2268 {0.06500, 0.06534, 0.06638, 0.06811, 0.07060, 0.07413,
2269 0.07852, 0.08491, 0.09614, 0.12446, 0.37626},
2270 {0.09119, 0.09140, 0.09194, 0.09293, 0.09471, 0.00000,
2271 0.11013, 0.11685, 0.13050, 0.16302, 0.41991},
2272 {0.13111, 0.13190, 0.13466, 0.14091, 0.15554, 0.22409,
2273 0.18846, 0.18167, 0.19113, 0.22854, 0.48995},
2274 {0.18849, 0.18975, 0.19380, 0.20185, 0.21797, 0.28050,
2275 0.25368, 0.24575, 0.25446, 0.29249, 0.55442},
2276 {0.24995, 0.25125, 0.25563, 0.26366, 0.27986, 0.34065,
2277 0.31605, 0.30815, 0.31680, 0.35482, 0.61697},
2278 {0.31187, 0.31324, 0.31745, 0.32580, 0.34205, 0.40217,
2279 0.37825, 0.37031, 0.37897, 0.41696, 0.67890},
2280 {0.37401, 0.37531, 0.37955, 0.38777, 0.40395, 0.46408,
2281 0.44037, 0.43242, 0.44108, 0.47906, 0.74122},
2282 {0.43610, 0.43741, 0.44161, 0.44986, 0.46604, 0.52614,
2283 0.50248, 0.49452, 0.50316, 0.54116, 0.80326},
2284 {0.49820, 0.49988, 0.50372, 0.51196, 0.52814, 0.58822,
2285 0.56459, 0.55661, 0.56527, 0.60326, 0.86526},
2286 {0.56032, 0.56161, 0.56582, 0.57408, 0.59024, 0.65032,
2287 0.62670, 0.61872, 0.62737, 0.66537, 0.92749},
2288 {0.62240, 0.62371, 0.62792, 0.63624, 0.65236, 0.71241,
2289 0.68881, 0.68081, 0.68947, 0.72750, 0.98941},
2290 {0.68449, 0.68581, 0.69002, 0.69828, 0.71444, 0.77452,
2291 0.75089, 0.74295, 0.75157, 0.78957, 1.05157},
2292 {0.74660, 0.74790, 0.75212, 0.76036, 0.77654, 0.83748,
2293 0.81299, 0.80501, 0.81193, 0.85168, 1.11375},
2294 {0.80870, 0.81017, 0.81423, 0.82246, 0.83867, 0.89908,
2295 0.87509, 0.86660, 0.87577, 0.91376, 1.17586},
2296 {0.87080, 0.87233, 0.87632, 0.88458, 0.90074, 0.96083,
2297 0.93718, 0.92922, 0.93787, 0.97588, 1.23794},
2298 {0.93291, 0.93422, 0.93844, 0.94667, 0.96293, 1.02295,
2299 0.99929, 0.99127, 0.99997, 1.03797, 1.29995},
2300 {0.99500, 0.99645, 1.00308, 1.00877, 1.02497, 1.08504,
2301 1.06140, 1.05343, 1.06203, 1.10006, 1.36216},
2302 {1.05712, 1.05926, 1.06262, 1.07092, 1.08706, 1.14754,
2303 1.12350, 1.11550, 1.12417, 1.16218, 1.42427},
2304 {1.11921, 1.12059, 1.12473, 1.13297, 1.14916, 1.21140,
2305 1.18560, 1.17284, 1.18625, 1.22414, 1.48629},
2306 {1.18140, 1.18262, 1.18690, 1.19508, 1.21125, 1.27139,
2307 1.24164, 1.23495, 1.24838, 1.28634, 1.54852},
2308 {1.24340, 1.24473, 1.24901, 1.25732, 1.27336, 1.33358,
2309 1.30793, 1.30179, 1.31047, 1.34848, 1.61066},
2310 {1.30551, 1.30684, 1.31104, 1.32056, 1.33553, 1.39609,
2311 1.37004, 1.36392, 1.37045, 1.41057, 1.67259},
2312 {1.36755, 1.36892, 1.37315, 1.39148, 1.39755, 1.45820,
2313 1.43215, 1.42602, 1.43467, 1.47268, 1.73477},
2314 {1.42966, 1.43101, 1.43549, 1.45359, 1.45976, 1.52031,
2315 1.49601, 1.48811, 1.49677, 1.53477, 1.79691},
2316 {1.49180, 1.49321, 1.49760, 1.51570, 1.52175, 1.58185,
2317 1.55771, 1.55023, 1.55888, 1.59672, 1.85501},
2318 {1.55391, 1.55527, 1.55943, 1.57782, 1.58391, 1.64395,
2319 1.62008, 1.61233, 1.62085, 1.65883, 1.92091},
2320 {1.61599, 1.61732, 1.62154, 1.63993, 1.64612, 1.70608,
2321 1.68237, 1.67108, 1.68301, 1.72110, 1.97931},
2322 {1.67808, 1.67948, 1.68364, 1.70204, 1.70823, 1.76858,
2323 1.74404, 1.73539, 1.74512, 1.78321, 2.04522},
2324 {1.74019, 1.74152, 1.74573, 1.76415, 1.77015, 1.83040,
2325 1.80615, 1.79366, 1.80723, 1.84509, 2.10742},
2326 {1.80235, 1.80362, 1.80783, 1.82626, 1.83227, 1.89246,
2327 1.86795, 1.85405, 1.86938, 1.90720, 2.16953},
2328 {1.86442, 1.86572, 1.86994, 1.88837, 1.89438, 1.95445,
2329 1.93006, 1.92283, 1.93148, 1.96931, 2.23147},
2330 {1.92700, 1.92783, 1.93197, 1.95049, 1.95649, 2.01668,
2331 1.99217, 1.98486, 1.99352, 2.03143, 2.29358}};
2332
2333 // Garfield simulation at UD = -2000V; vd = 1.783cm/microsec, <driftfield> = 688V/cm
2334 Float_t time2000[ktimebin][kZbin] =
2335 {{0.09176, 0.09196, 0.09296, 0.09465, 0.09704, 0.10020,
2336 0.10427, 0.10977, 0.11825, 0.13988, 0.37774},
2337 {0.06583, 0.06620, 0.06735, 0.06918, 0.07177, 0.07513,
2338 0.07936, 0.08503, 0.09372, 0.11606, 0.35586},
2339 {0.03944, 0.04001, 0.04170, 0.04431, 0.04774, 0.05184,
2340 0.05670, 0.06296, 0.07291, 0.09893, 0.34680},
2341 {0.01108, 0.01281, 0.01719, 0.02279, 0.02879, 0.03474,
2342 0.04093, 0.04908, 0.06422, 0.10605, 0.36800},
2343 {0.01114, 0.01287, 0.01720, 0.02276, 0.02863, 0.03449,
2344 0.04073, 0.04970, 0.06774, 0.11478, 0.37179},
2345 {0.03925, 0.03977, 0.04135, 0.04386, 0.04711, 0.05108,
2346 0.05604, 0.06290, 0.07580, 0.10748, 0.36386},
2347 {0.06501, 0.06536, 0.06640, 0.06814, 0.07062, 0.07398,
2348 0.07852, 0.08487, 0.09598, 0.12405, 0.37519},
2349 {0.09109, 0.09127, 0.09188, 0.09292, 0.09472, 0.00000,
2350 0.10964, 0.11630, 0.12960, 0.16150, 0.41765},
2351 {0.12898, 0.12968, 0.13209, 0.13749, 0.15034, 0.21286,
2352 0.18088, 0.17590, 0.18591, 0.22254, 0.48315},
2353 {0.18122, 0.18227, 0.18574, 0.19263, 0.20674, 0.26376,
2354 0.23960, 0.23375, 0.24316, 0.28047, 0.54179},
2355 {0.23674, 0.23784, 0.24142, 0.24847, 0.26264, 0.31810,
2356 0.29602, 0.29008, 0.29944, 0.33675, 0.59795},
2357 {0.29279, 0.29382, 0.29742, 0.30448, 0.31865, 0.37364,
2358 0.35215, 0.34629, 0.35555, 0.39286, 0.65411},
2359 {0.34875, 0.34987, 0.35346, 0.36054, 0.37472, 0.42956,
2360 0.40825, 0.40229, 0.41167, 0.44894, 0.71033},
2361 {0.40484, 0.40594, 0.40954, 0.41660, 0.43077, 0.48560,
2362 0.46433, 0.45840, 0.46772, 0.50500, 0.76632},
2363 {0.46090, 0.46201, 0.46560, 0.47267, 0.48684, 0.54167,
2364 0.52041, 0.51449, 0.52382, 0.56108, 0.82227},
2365 {0.51698, 0.51809, 0.52173, 0.52874, 0.54291, 0.59776,
2366 0.57646, 0.57052, 0.57986, 0.61717, 0.87836},
2367 {0.57306, 0.57418, 0.57782, 0.58513, 0.59899, 0.65380,
2368 0.63255, 0.62661, 0.63594, 0.67325, 0.93460},
2369 {0.62912, 0.63024, 0.63383, 0.64103, 0.65506, 0.70988,
2370 0.68484, 0.68267, 0.69202, 0.72878, 0.99046},
2371 {0.68521, 0.68633, 0.68990, 0.69699, 0.71115, 0.76595,
2372 0.74468, 0.73872, 0.74814, 0.78538, 1.04674},
2373 {0.74127, 0.74239, 0.74605, 0.75303, 0.77022, 0.82204,
2374 0.80078, 0.79484, 0.80416, 0.84147, 1.10261},
2375 {0.79736, 0.79846, 0.80206, 0.80947, 0.82330, 0.87813,
2376 0.85688, 0.85087, 0.86023, 0.89752, 1.15874},
2377 {0.85342, 0.85454, 0.85815, 0.86519, 0.87936, 0.93417,
2378 0.91293, 0.90428, 0.91631, 0.95360, 1.20760},
2379 {0.90949, 0.91061, 0.91423, 0.92128, 0.93544, 0.99026,
2380 0.96807, 0.96305, 0.97239, 1.00967, 1.27078},
2381 {0.96556, 0.96669, 0.97111, 0.97734, 0.99151, 1.04664,
2382 1.02508, 1.01879, 1.02846, 1.06167, 1.32695},
2383 {1.02167, 1.02279, 1.02656, 1.03341, 1.04759, 1.10242,
2384 1.08115, 1.07003, 1.08453, 1.12184, 1.38304},
2385 {1.07776, 1.07883, 1.08242, 1.08950, 1.10384, 1.16422,
2386 1.13725, 1.13133, 1.14061, 1.17793, 1.43910},
2387 {1.13379, 1.13492, 1.13864, 1.14567, 1.15973, 1.21455,
2388 1.19323, 1.18734, 1.19668, 1.23401, 1.49528},
2389 {1.18988, 1.19098, 1.19457, 1.20164, 1.21582, 1.27064,
2390 1.24937, 1.24044, 1.25275, 1.29004, 1.55137},
2391 {1.24592, 1.24706, 1.25087, 1.25773, 1.27188, 1.32670,
2392 1.30544, 1.29953, 1.30883, 1.34613, 1.60743},
2393 {1.30202, 1.30313, 1.30673, 1.31381, 1.32797, 1.38278,
2394 1.36151, 1.35167, 1.36490, 1.40221, 1.66306},
2395 {1.35809, 1.35921, 1.36282, 1.36986, 1.38403, 1.43888,
2396 1.41760, 1.41174, 1.42083, 1.45830, 1.71915},
2397 {1.41419, 1.41528, 1.41890, 1.42595, 1.44011, 1.49496,
2398 1.47368, 1.46769, 1.47706, 1.51436, 1.77523},
2399 {1.47131, 1.47141, 1.47494, 1.48850, 1.49620, 1.55137,
2400 1.52977, 1.51820, 1.53315, 1.57042, 1.83158},
2401 {1.52635, 1.52750, 1.53103, 1.53814, 1.55228, 1.60736,
2402 1.58503, 1.57986, 1.58920, 1.62649, 1.88767},
2403 {1.58418, 1.58355, 1.58711, 1.59526, 1.60833, 1.66316,
2404 1.63345, 1.63261, 1.64556, 1.68204, 1.94359},
2405 {1.64027, 1.63958, 1.64489, 1.65024, 1.66443, 1.71925,
2406 1.69794, 1.69201, 1.70143, 1.73865, 1.99968},
2407 {1.69450, 1.69566, 1.69940, 1.70697, 1.71841, 1.77819,
2408 1.75396, 1.74814, 1.75743, 1.79083, 2.05427},
2409 {1.75054, 1.75221, 1.75527, 1.76306, 1.77662, 1.83428,
2410 1.81006, 1.81173, 1.81345, 1.85076, 2.10289}};
2411
2412 // Garfield simulation at UD = -2100V; vd = 1.959cm/microsec, <driftfield> = 720V/cm
2413 Float_t time2100[ktimebin][kZbin] =
2414 {{0.09160, 0.09194, 0.09294, 0.09462, 0.09701, 0.10017,
2415 0.10424, 0.10974, 0.11823, 0.13988, 0.37762},
2416 {0.06585, 0.06619, 0.06731, 0.06916, 0.07174, 0.07509,
2417 0.07933, 0.08500, 0.09370, 0.11609, 0.35565},
2418 {0.03960, 0.04001, 0.04171, 0.04430, 0.04774, 0.05182,
2419 0.05668, 0.06294, 0.07291, 0.09896, 0.34676},
2420 {0.01109, 0.01280, 0.01716, 0.02279, 0.02876, 0.03474,
2421 0.04096, 0.04908, 0.06424, 0.10612, 0.36790},
2422 {0.01114, 0.01285, 0.01719, 0.02287, 0.02863, 0.03449,
2423 0.04073, 0.04964, 0.06759, 0.11446, 0.37162},
2424 {0.03922, 0.03977, 0.04146, 0.04386, 0.04711, 0.05109,
2425 0.05605, 0.06287, 0.07575, 0.10713, 0.36298},
2426 {0.06504, 0.06538, 0.06641, 0.06818, 0.07064, 0.07426,
2427 0.07852, 0.08483, 0.09581, 0.12363, 0.37424},
2428 {0.09103, 0.09129, 0.09186, 0.09291, 0.09476, 0.00000,
2429 0.10923, 0.11578, 0.12873, 0.16005, 0.41525},
2430 {0.12723, 0.12777, 0.12988, 0.13458, 0.14579, 0.20264,
2431 0.17421, 0.17078, 0.18132, 0.21708, 0.47699},
2432 {0.17508, 0.17601, 0.17897, 0.18487, 0.19698, 0.24881,
2433 0.22737, 0.22337, 0.23348, 0.27000, 0.53032},
2434 {0.22571, 0.22663, 0.22969, 0.23570, 0.24787, 0.29826,
2435 0.27871, 0.27462, 0.28471, 0.32122, 0.58166},
2436 {0.27664, 0.27759, 0.28067, 0.28669, 0.29891, 0.34898,
2437 0.32982, 0.32570, 0.33576, 0.37229, 0.63268},
2438 {0.32766, 0.32862, 0.33170, 0.33778, 0.34988, 0.39973,
2439 0.38088, 0.37675, 0.38680, 0.42333, 0.68159},
2440 {0.37872, 0.37966, 0.38275, 0.38875, 0.40093, 0.45073,
2441 0.43192, 0.42780, 0.43786, 0.47438, 0.73480},
2442 {0.42974, 0.43070, 0.43378, 0.43982, 0.45196, 0.50177,
2443 0.48297, 0.47884, 0.48889, 0.52544, 0.78581},
2444 {0.48081, 0.48175, 0.48482, 0.49084, 0.50302, 0.55290,
2445 0.53398, 0.52988, 0.53994, 0.57647, 0.83687},
2446 {0.53645, 0.53295, 0.53586, 0.54188, 0.55408, 0.60398,
2447 0.58504, 0.58092, 0.59100, 0.62768, 0.88773},
2448 {0.58345, 0.58409, 0.58690, 0.59292, 0.60510, 0.65562,
2449 0.63609, 0.63197, 0.64203, 0.67856, 0.93907},
2450 {0.63397, 0.63490, 0.63795, 0.64403, 0.65613, 0.70612,
2451 0.68714, 0.68301, 0.69294, 0.72955, 0.99000},
2452 {0.68496, 0.68592, 0.68899, 0.69504, 0.70733, 0.75708,
2453 0.73818, 0.73405, 0.74412, 0.78064, 1.04100},
2454 {0.73600, 0.73696, 0.74003, 0.74624, 0.75828, 0.80805,
2455 0.78904, 0.78512, 0.79517, 0.83152, 1.09205},
2456 {0.78709, 0.78801, 0.79108, 0.79709, 0.80931, 0.85906,
2457 0.84027, 0.83614, 0.84621, 0.88269, 1.14058},
2458 {0.83808, 0.83905, 0.84215, 0.84816, 0.86031, 0.91011,
2459 0.89139, 0.88718, 0.89725, 0.93377, 1.19413},
2460 {0.88916, 0.89010, 0.89320, 0.89920, 0.91136, 0.96117,
2461 0.94235, 0.93822, 0.94828, 0.98480, 1.24538},
2462 {0.94036, 0.94113, 0.94422, 0.95023, 0.96241, 1.01220,
2463 0.99310, 0.98927, 0.99933, 1.03585, 1.29629},
2464 {0.99139, 0.99220, 0.99525, 1.00127, 1.01344, 1.06324,
2465 1.04451, 1.04033, 1.04836, 1.08690, 1.34727},
2466 {1.04261, 1.04325, 1.04628, 1.05232, 1.06448, 1.12090,
2467 1.09546, 1.09136, 1.10142, 1.13795, 1.39831},
2468 {1.09331, 1.09429, 1.09742, 1.10336, 1.11557, 1.16547,
2469 1.14658, 1.13642, 1.15247, 1.18898, 1.44936},
2470 {1.14436, 1.14539, 1.14847, 1.15443, 1.16662, 1.21794,
2471 1.19763, 1.19329, 1.20349, 1.23956, 1.50043},
2472 {1.19533, 1.19651, 1.19943, 1.20548, 1.21666, 1.26753,
2473 1.24862, 1.24434, 1.25455, 1.29106, 1.55142},
2474 {1.24638, 1.24756, 1.25046, 1.25648, 1.26764, 1.31858,
2475 1.29967, 1.29538, 1.30499, 1.34211, 1.60250},
2476 {1.29747, 1.29847, 1.30175, 1.30753, 1.31869, 1.36969,
2477 1.35069, 1.34656, 1.35663, 1.39316, 1.64644},
2478 {1.35537, 1.34952, 1.35255, 1.35869, 1.36973, 1.41387,
2479 1.40173, 1.39761, 1.40768, 1.44396, 1.70238},
2480 {1.39956, 1.40056, 1.40380, 1.40961, 1.42178, 1.46492,
2481 1.45278, 1.45423, 1.45872, 1.49522, 1.75557},
2482 {1.45080, 1.45159, 1.45463, 1.46109, 1.47287, 1.52263,
2483 1.50382, 1.50050, 1.50977, 1.54502, 1.80670},
2484 {1.50165, 1.50264, 1.50570, 1.51214, 1.52233, 1.57370,
2485 1.55484, 1.55155, 1.56080, 1.59731, 1.85778},
2486 {1.55269, 1.55364, 1.55675, 1.56274, 1.57491, 1.62598,
2487 1.60590, 1.60259, 1.61185, 1.64836, 1.90883},
2488 {1.60368, 1.60469, 1.60779, 1.61373, 1.62596, 1.67738,
2489 1.65651, 1.65249, 1.66290, 1.69936, 1.95959}};
2490
2491 // Garfield simulation at UD = -2200V; vd = 2.134cm/microsec, <driftfield> = 753V/cm
2492 Float_t time2200[ktimebin][kZbin] =
2493 {{0.09162, 0.09194, 0.09292, 0.09460, 0.09702, 0.10014,
2494 0.10421, 0.10971, 0.11820, 0.13990, 0.37745},
2495 {0.06581, 0.06618, 0.06730, 0.06915, 0.07173, 0.07507,
2496 0.07931, 0.08497, 0.09368, 0.11609, 0.35560},
2497 {0.03947, 0.04001, 0.04167, 0.04429, 0.04772, 0.05183,
2498 0.05667, 0.06293, 0.07292, 0.09900, 0.34673},
2499 {0.01111, 0.01280, 0.01716, 0.02279, 0.02876, 0.03473,
2500 0.04091, 0.04907, 0.06426, 0.10620, 0.36766},
2501 {0.01113, 0.01285, 0.01719, 0.02276, 0.02863, 0.03452,
2502 0.04076, 0.04960, 0.06745, 0.11419, 0.37139},
2503 {0.03923, 0.03978, 0.04137, 0.04387, 0.04713, 0.05110,
2504 0.05605, 0.06284, 0.07551, 0.10677, 0.36210},
2505 {0.06505, 0.06540, 0.06644, 0.06820, 0.07069, 0.07401,
2506 0.07852, 0.08479, 0.09565, 0.12325, 0.37313},
2507 {0.09107, 0.09127, 0.09181, 0.09291, 0.09474, 0.00000,
2508 0.10883, 0.11528, 0.12789, 0.15865, 0.41313},
2509 {0.12559, 0.12622, 0.12800, 0.13206, 0.14166, 0.19331,
2510 0.16832, 0.16632, 0.17724, 0.21218, 0.47098},
2511 {0.16992, 0.17070, 0.17325, 0.17831, 0.18871, 0.23557,
2512 0.21690, 0.21451, 0.22514, 0.26082, 0.52034},
2513 {0.21640, 0.21722, 0.21987, 0.22500, 0.23540, 0.28097,
2514 0.26399, 0.26154, 0.27214, 0.30784, 0.56734},
2515 {0.26318, 0.26400, 0.26679, 0.27181, 0.28220, 0.32739,
2516 0.31090, 0.30842, 0.31902, 0.35474, 0.61415},
2517 {0.31001, 0.31085, 0.31348, 0.31866, 0.32903, 0.37412,
2518 0.35777, 0.35546, 0.36588, 0.40159, 0.66103},
2519 {0.35687, 0.35769, 0.36033, 0.36556, 0.37588, 0.42094,
2520 0.40523, 0.40214, 0.41273, 0.44841, 0.70785},
2521 {0.40372, 0.40457, 0.40723, 0.41234, 0.42273, 0.46778,
2522 0.45148, 0.44903, 0.45961, 0.49526, 0.75486},
2523 {0.45062, 0.45139, 0.45404, 0.45966, 0.46958, 0.51470,
2524 0.49833, 0.49584, 0.50644, 0.54211, 0.80160},
2525 {0.49742, 0.49825, 0.50088, 0.50605, 0.51644, 0.56148,
2526 0.54518, 0.54270, 0.55330, 0.58897, 0.84854},
2527 {0.54427, 0.54510, 0.54774, 0.55290, 0.56329, 0.60846,
2528 0.59203, 0.58955, 0.60014, 0.63578, 0.89528},
2529 {0.59119, 0.59199, 0.59471, 0.59975, 0.61014, 0.65533,
2530 0.63889, 0.63636, 0.64699, 0.68269, 0.94197},
2531 {0.63866, 0.63880, 0.64145, 0.64664, 0.65701, 0.70639,
2532 0.68574, 0.68325, 0.69385, 0.72949, 0.98900},
2533 {0.68483, 0.68566, 0.68831, 0.69347, 0.70386, 0.74890,
2534 0.73260, 0.73010, 0.74069, 0.77638, 1.03320},
2535 {0.73168, 0.73255, 0.73515, 0.74031, 0.75072, 0.79576,
2536 0.77117, 0.77501, 0.78755, 0.82318, 1.08006},
2537 {0.77854, 0.78310, 0.78200, 0.79525, 0.79756, 0.84281,
2538 0.81803, 0.82393, 0.83441, 0.87008, 1.12692},
2539 {0.82541, 0.82642, 0.82916, 0.83528, 0.84442, 0.89086,
2540 0.87315, 0.87079, 0.88125, 0.91694, 1.17648},
2541 {0.87226, 0.87308, 0.87602, 0.88086, 0.89128, 0.93772,
2542 0.92001, 0.91751, 0.92811, 0.95587, 1.22328},
2543 {0.91921, 0.91994, 0.92256, 0.92772, 0.94713, 0.98566,
2544 0.96690, 0.96436, 0.97495, 1.01064, 1.26882},
2545 {0.96790, 0.96679, 0.96941, 0.97463, 0.99399, 1.03001,
2546 1.01376, 1.01112, 1.02181, 1.05749, 1.31568},
2547 {1.01278, 1.01390, 1.01674, 1.02147, 1.03182, 1.07820,
2548 1.06056, 1.05798, 1.06867, 1.10433, 1.36390},
2549 {1.05964, 1.06076, 1.06331, 1.06833, 1.07870, 1.13297,
2550 1.10742, 1.10520, 1.11543, 1.15120, 1.41069},
2551 {1.10664, 1.10762, 1.10997, 1.11519, 1.12556, 1.17531,
2552 1.15427, 1.14620, 1.16229, 1.19805, 1.45758},
2553 {1.15352, 1.15421, 1.15683, 1.16218, 1.17242, 1.21910,
2554 1.20035, 1.19863, 1.20579, 1.24473, 1.50412},
2555 {1.20019, 1.20115, 1.20369, 1.20892, 1.21928, 1.26913,
2556 1.24721, 1.24549, 1.25605, 1.29159, 1.54920},
2557 {1.24707, 1.24846, 1.25052, 1.25602, 1.26608, 1.31558,
2558 1.29448, 1.29232, 1.30293, 1.33675, 1.59798},
2559 {1.29391, 1.29475, 1.29738, 1.30255, 1.31294, 1.36244,
2560 1.34167, 1.33918, 1.34979, 1.38229, 1.64496},
2561 {1.34078, 1.34304, 1.34424, 1.35565, 1.35980, 1.40930,
2562 1.38853, 1.38229, 1.39664, 1.42863, 1.69162},
2563 {1.38762, 1.38847, 1.39110, 1.39627, 1.40666, 1.45183,
2564 1.43539, 1.43289, 1.44348, 1.47549, 1.73876},
2565 {1.43524, 1.43533, 1.43796, 1.44310, 1.45371, 1.49305,
2566 1.48224, 1.47941, 1.49034, 1.52601, 1.78552},
2567 {1.48122, 1.48219, 1.48482, 1.48991, 1.50030, 1.53991,
2568 1.52898, 1.52653, 1.53653, 1.57282, 1.82386}};
2569
4d18a639 2570 if (fTimeStruct1) {
2571 delete [] fTimeStruct1;
2572 }
2573 fTimeStruct1 = new Float_t[ktimebin*kZbin];
2574
2575 if (fTimeStruct2) {
2576 delete [] fTimeStruct2;
2577 }
2578 fTimeStruct2 = new Float_t[ktimebin*kZbin];
2579
2580 for (Int_t ctrt = 0; ctrt < ktimebin; ctrt++) {
2581 for (Int_t ctrz = 0; ctrz < kZbin; ctrz++) {
2582 if (vdrift > fVDsmp[6]) {
2583 fTimeStruct1[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2584 fTimeStruct2[ctrt+ctrz*ktimebin] = time2200[ctrt][ctrz];
2585 fVDlo = fVDsmp[6];
2586 fVDhi = fVDsmp[7];
2587 }
2588 else if (vdrift > fVDsmp[5]) {
2589 fTimeStruct1[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2590 fTimeStruct2[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2591 fVDlo = fVDsmp[5];
2592 fVDhi = fVDsmp[6];
2593 }
2594 else if (vdrift > fVDsmp[4]) {
2595 fTimeStruct1[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2596 fTimeStruct2[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2597 fVDlo = fVDsmp[4];
2598 fVDhi = fVDsmp[5];
2599 }
2600 else if (vdrift > fVDsmp[3]) {
2601 fTimeStruct1[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2602 fTimeStruct2[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2603 fVDlo = fVDsmp[3];
2604 fVDhi = fVDsmp[4];
2605 }
2606 else if (vdrift > fVDsmp[2]) {
2607 fTimeStruct1[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2608 fTimeStruct2[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2609 fVDlo = fVDsmp[2];
2610 fVDhi = fVDsmp[3];
2611 }
2612 else if (vdrift > fVDsmp[1]) {
2613 fTimeStruct1[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2614 fTimeStruct2[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2615 fVDlo = fVDsmp[1];
2616 fVDhi = fVDsmp[2];
2617 }
2618 else if (vdrift > (fVDsmp[0] - 1.0e-5)) {
2619 fTimeStruct1[ctrt+ctrz*ktimebin] = time1500[ctrt][ctrz];
2620 fTimeStruct2[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2621 fVDlo = fVDsmp[0];
2622 fVDhi = fVDsmp[1];
3551db50 2623 }
2624 }
2625 }
4d18a639 2626
3551db50 2627}
2628
2629//_____________________________________________________________________________
2630void AliTRDdigitizer::RecalcDiffusion(Float_t vdrift)
2631{
4d18a639 2632 //
2633 // Recalculates the diffusion parameters
2634 //
2635
2636 if (vdrift == fDiffLastVdrift) {
3551db50 2637 return;
4d18a639 2638 }
7754cd1f 2639
4d18a639 2640 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 2641 if (!simParam) {
4329977a 2642 AliFatal("Could not get simulation parameters");
3551db50 2643 return;
2644 }
2645
4d18a639 2646 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
9afbd7de 2647 if (!commonParam) {
4329977a 2648 AliFatal("Could not get common parameters");
3551db50 2649 return;
2650 }
2651
4d18a639 2652 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 2653 if (!calibration) {
4329977a 2654 AliFatal("Could not get calibration object");
3551db50 2655 return;
2656 }
1b95a37b 2657
4d18a639 2658 fDiffLastVdrift = vdrift;
0a17cc30 2659
2660 if (simParam->IsXenon()) {
b65e5048 2661
0a17cc30 2662 //
2663 // Vd and B-field dependent diffusion and Lorentz angle
2664 //
b65e5048 2665
0a17cc30 2666 // The magnetic field strength
2667 Double_t x[3] = { 0.0, 0.0, 0.0 };
2668 Double_t b[3];
2669 gAlice->Field(x,b); // b[] is in kilo Gauss
2670 Float_t field = b[2] * 0.1; // Tesla
b65e5048 2671
2672
2673
0a17cc30 2674 // DiffusionL
2675 const Int_t kNbL = 5;
2676 Float_t p0L[kNbL] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 };
2677 Float_t p1L[kNbL] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 };
2678 Float_t p2L[kNbL] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 };
2679 Float_t p3L[kNbL] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 };
b65e5048 2680
0a17cc30 2681 Int_t ibL = ((Int_t) (10 * (field - 0.15)));
2682 ibL = TMath::Max( 0,ibL);
2683 ibL = TMath::Min(kNbL,ibL);
b65e5048 2684
0a17cc30 2685 fDiffusionL = p0L[ibL]
b65e5048 2686 + p1L[ibL] * vdrift
2687 + p2L[ibL] * vdrift*vdrift
2688 + p3L[ibL] * vdrift*vdrift*vdrift;
2689
0a17cc30 2690 // DiffusionT
2691 const Int_t kNbT = 5;
2692 Float_t p0T[kNbT] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 };
2693 Float_t p1T[kNbT] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 };
2694 Float_t p2T[kNbT] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 };
2695 Float_t p3T[kNbT] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 };
b65e5048 2696
0a17cc30 2697 Int_t ibT= ((Int_t) (10 * (field - 0.15)));
2698 ibT = TMath::Max( 0,ibT);
2699 ibT = TMath::Min(kNbT,ibT);
b65e5048 2700
0a17cc30 2701 fDiffusionT = p0T[ibT]
2702 + p1T[ibT] * vdrift
2703 + p2T[ibT] * vdrift*vdrift
2704 + p3T[ibT] * vdrift*vdrift*vdrift;
b65e5048 2705
0a17cc30 2706 // OmegaTau
2707 fOmegaTau = calibration->GetOmegaTau(vdrift,field);
0a17cc30 2708 if (commonParam->ExBOn()) {
2709 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2710 }
2711 else {
2712 fLorentzFactor = 1.0;
2713 }
b65e5048 2714
0a17cc30 2715 }
b65e5048 2716
0a17cc30 2717 else if (simParam->IsArgon()) {
3551db50 2718
0a17cc30 2719 // Diffusion constants and Lorentz angle only for B = 0.5T
2720 fDiffusionL = 0.0182;
2721 fDiffusionT = 0.0159;
2722 fOmegaTau = 0.0219769;
2723 if (commonParam->ExBOn()) {
2724 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2725 }
2726 else {
2727 fLorentzFactor = 1.0;
2728 }
1b95a37b 2729
3551db50 2730 }
9afbd7de 2731
3551db50 2732}
2733
2734//_____________________________________________________________________________
2735Float_t AliTRDdigitizer::GetDiffusionL(Float_t vdrift)
2736{
2737 //
2738 // Returns the longitudinal diffusion coefficient for a given drift
2739 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2740 // The values are according to a GARFIELD simulation.
2741 //
2742
2743 RecalcDiffusion(vdrift);
4d18a639 2744
2745 return fDiffusionL;
9afbd7de 2746
3551db50 2747}
2748
2749//_____________________________________________________________________________
2750Float_t AliTRDdigitizer::GetDiffusionT(Float_t vdrift)
2751{
2752 //
2753 // Returns the transverse diffusion coefficient for a given drift
2754 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2755 // The values are according to a GARFIELD simulation.
2756 //
2757
2758 RecalcDiffusion(vdrift);
4d18a639 2759
2760 return fDiffusionT;
9afbd7de 2761
3551db50 2762}
2763
2764//_____________________________________________________________________________
4329977a 2765Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t absdriftlength
2766 , Double_t &lRow, Double_t &lCol, Double_t &lTime)
3551db50 2767{
2768 //
4329977a 2769 // Applies the diffusion smearing to the position of a single electron.
2770 // Depends on absolute drift length.
3551db50 2771 //
2772
2773 RecalcDiffusion(vdrift);
2774
4329977a 2775 Float_t driftSqrt = TMath::Sqrt(absdriftlength);
4d18a639 2776 Float_t sigmaT = driftSqrt * fDiffusionT;
2777 Float_t sigmaL = driftSqrt * fDiffusionL;
4329977a 2778 lRow = gRandom->Gaus(lRow ,sigmaT);
2779 lCol = gRandom->Gaus(lCol ,sigmaT * GetLorentzFactor(vdrift));
2780 lTime = gRandom->Gaus(lTime,sigmaL * GetLorentzFactor(vdrift));
3551db50 2781
2782 return 1;
9afbd7de 2783
3551db50 2784}
2785
2786//_____________________________________________________________________________
2787Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
2788{
9afbd7de 2789 //
2790 // Returns the recalculated Lorentz factor
2791 //
2792
3551db50 2793 RecalcDiffusion(vd);
4d18a639 2794
2795 return fLorentzFactor;
9afbd7de 2796
3551db50 2797}
2798
2799//_____________________________________________________________________________
4329977a 2800Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t &lCol)
3551db50 2801{
2802 //
4329977a 2803 // Applies E x B effects to the position of a single electron.
2804 // Depends on signed drift length.
3551db50 2805 //
2806
2807 RecalcDiffusion(vdrift);
4329977a 2808
2809 lCol = lCol + fOmegaTau * driftlength;
3551db50 2810
2811 return 1;
9afbd7de 2812
3551db50 2813}
b65e5048 2814
2815//_____________________________________________________________________________
2816void AliTRDdigitizer::ZS(AliTRDarrayADC *digits)
2817{
2818 //
2819 // Apply the ZS
2820 //
2821
2822 // Create the temporary digits container
2823 AliTRDarrayADC *tempDigits;
2824 tempDigits = new AliTRDarrayADC();
2825 Int_t dim4 = digits->GetNrow();
2826 Int_t dim5 = digits->GetNcol()+2;
2827 Int_t dim6 = digits->GetNtime();
2828 Int_t lim = dim5-1;
2829
2830 tempDigits->Allocate(dim4,dim5,dim6);
2831
2832 for(Int_t row=0;row<dim4;row++)
2833 {
2834 for(Int_t col=0;col<dim5;col++)
2835 {
2836 for(Int_t time=0;time<dim6;time++)
2837 {
2838 if(col==0||col==lim)
2839 {
2840 tempDigits->SetData(row,col,time,0);
2841 }
2842 else
2843 {
2844 tempDigits->SetData(row,col,time,digits->GetData(row,col-1,time));
2845 }
2846 }
2847 }
2848 }
2849
2850 //Create and initialize the mcm object
2851 AliTRDmcmSim* mcmfast;
2852 mcmfast = new AliTRDmcmSim();
2853 mcmfast->StartfastZS(dim5,dim6);
2854
2855 //Call the methods in the mcm class using the temporary array as input
2856 for(Int_t row=0;row<dim4;row++)
2857 {
2858 for(Int_t col=0;col<dim5;col++)
2859 {
2860 for(Int_t time=0;time<dim6;time++)
2861 {
2862 mcmfast->SetData(col,time,tempDigits->GetData(row,col,time));
2863 }
2864 }
2865 mcmfast->Filter();
2866 mcmfast->ZSMapping();
2867 mcmfast->FlagDigitsArray(tempDigits,row);
2868 mcmfast->StartfastZS(dim5,dim6);
2869 }
2870
2871 //Modify the digits array to indicate suppressed values
2872 for(Int_t irow=0; irow<dim4;irow++)
2873 {
2874 for(Int_t icol=1; icol<lim;icol++)
2875 {
2876 for(Int_t itime=0; itime<dim6;itime++)
2877 {
2878 if(tempDigits->GetData(irow,icol,itime)==-1) // If supressed in temporary array
2879 {
2880 digits->SetData(irow,icol-1,itime,-1); // Supressed values indicated by -1 in the digits array
2881 }
2882 }
2883 }
2884 }
2885
2886 // Delete objects
2887 delete mcmfast;
2888 delete tempDigits;
2889
2890}