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f7336fa3 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
88cb7938 16/* $Id$ */
f7336fa3 17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// Creates and handles digits from TRD hits //
b08ed1cf 21// Authors: C. Blume (blume@ikf.uni-frankfurt.de) //
22// C. Lippmann //
23// B. Vulpescu //
f7336fa3 24// //
25// The following effects are included: //
26// - Diffusion //
27// - ExB effects //
28// - Gas gain including fluctuations //
29// - Pad-response (simple Gaussian approximation) //
abaf1f1d 30// - Time-response //
f7336fa3 31// - Electronics noise //
32// - Electronics gain //
33// - Digitization //
f7336fa3 34// The corresponding parameter can be adjusted via the various //
35// Set-functions. If these parameters are not explicitly set, default //
36// values are used (see Init-function). //
f7336fa3 37// //
38///////////////////////////////////////////////////////////////////////////////
39
6798b56e 40#include <stdlib.h>
41
f7336fa3 42#include <TMath.h>
43#include <TVector.h>
44#include <TRandom.h>
94de3818 45#include <TROOT.h>
46#include <TTree.h>
793ff80c 47#include <TFile.h>
48#include <TF1.h>
abaf1f1d 49#include <TList.h>
85cbec76 50#include <TTask.h>
3becff3c 51#include <TGeoManager.h>
793ff80c 52
53#include "AliRun.h"
88cb7938 54#include "AliRunLoader.h"
55#include "AliLoader.h"
56#include "AliConfig.h"
db30bf0f 57#include "AliMagF.h"
85cbec76 58#include "AliRunDigitizer.h"
88cb7938 59#include "AliRunLoader.h"
60#include "AliLoader.h"
ad2cc20b 61#include "AliLog.h"
f7336fa3 62
63#include "AliTRD.h"
793ff80c 64#include "AliTRDhit.h"
f7336fa3 65#include "AliTRDdigitizer.h"
da581aea 66#include "AliTRDdataArrayI.h"
67#include "AliTRDdataArrayF.h"
793ff80c 68#include "AliTRDsegmentArray.h"
da581aea 69#include "AliTRDdigitsManager.h"
793ff80c 70#include "AliTRDgeometry.h"
a5cadd36 71#include "AliTRDpadPlane.h"
3551db50 72#include "AliTRDcalibDB.h"
73#include "AliTRDSimParam.h"
74#include "AliTRDCommonParam.h"
ecf39416 75#include "AliTRDfeeParam.h"
f7336fa3 76
4329977a 77#include "Cal/AliTRDCalROC.h"
78#include "Cal/AliTRDCalDet.h"
79
f7336fa3 80ClassImp(AliTRDdigitizer)
81
82//_____________________________________________________________________________
85cbec76 83AliTRDdigitizer::AliTRDdigitizer()
4d18a639 84 :AliDigitizer()
85 ,fRunLoader(0)
86 ,fDigitsManager(0)
87 ,fSDigitsManager(0)
88 ,fSDigitsManagerList(0)
89 ,fTRD(0)
90 ,fGeo(0)
ecf39416 91 ,fFee(0)
4d18a639 92 ,fEvent(0)
93 ,fMasks(0)
94 ,fCompress(kTRUE)
95 ,fSDigits(kFALSE)
96 ,fSDigitsScale(0.0)
97 ,fMergeSignalOnly(kFALSE)
98 ,fDiffLastVdrift(0)
99 ,fDiffusionT(0.0)
100 ,fDiffusionL(0.0)
101 ,fOmegaTau(0.0)
102 ,fLorentzFactor(0.0)
103 ,fTimeLastVdrift(0)
104 ,fTimeStruct1(0)
105 ,fTimeStruct2(0)
106 ,fVDlo(0)
107 ,fVDhi(0)
f7336fa3 108{
109 //
110 // AliTRDdigitizer default constructor
111 //
3551db50 112
113 Init();
3becff3c 114
f7336fa3 115}
116
117//_____________________________________________________________________________
4d18a639 118AliTRDdigitizer::AliTRDdigitizer(const Text_t *name, const Text_t *title)
119 :AliDigitizer(name,title)
120 ,fRunLoader(0)
121 ,fDigitsManager(0)
122 ,fSDigitsManager(0)
123 ,fSDigitsManagerList(0)
124 ,fTRD(0)
125 ,fGeo(0)
ecf39416 126 ,fFee(0)
4d18a639 127 ,fEvent(0)
128 ,fMasks(0)
129 ,fCompress(kTRUE)
130 ,fSDigits(kFALSE)
131 ,fSDigitsScale(0.0)
132 ,fMergeSignalOnly(kFALSE)
133 ,fDiffLastVdrift(0)
134 ,fDiffusionT(0.0)
135 ,fDiffusionL(0.0)
136 ,fOmegaTau(0.0)
137 ,fLorentzFactor(0.0)
138 ,fTimeLastVdrift(0)
139 ,fTimeStruct1(0)
140 ,fTimeStruct2(0)
141 ,fVDlo(0)
142 ,fVDhi(0)
f7336fa3 143{
144 //
85cbec76 145 // AliTRDdigitizer constructor
146 //
147
3551db50 148 Init();
3becff3c 149
85cbec76 150}
151
152//_____________________________________________________________________________
153AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager
4d18a639 154 , const Text_t *name, const Text_t *title)
155 :AliDigitizer(manager,name,title)
156 ,fRunLoader(0)
157 ,fDigitsManager(0)
158 ,fSDigitsManager(0)
159 ,fSDigitsManagerList(0)
160 ,fTRD(0)
161 ,fGeo(0)
ecf39416 162 ,fFee(0)
4d18a639 163 ,fEvent(0)
164 ,fMasks(0)
165 ,fCompress(kTRUE)
166 ,fSDigits(kFALSE)
167 ,fSDigitsScale(0.0)
168 ,fMergeSignalOnly(kFALSE)
169 ,fDiffLastVdrift(0)
170 ,fDiffusionT(0.0)
171 ,fDiffusionL(0.0)
172 ,fOmegaTau(0.0)
173 ,fLorentzFactor(0.0)
174 ,fTimeLastVdrift(0)
175 ,fTimeStruct1(0)
176 ,fTimeStruct2(0)
177 ,fVDlo(0)
178 ,fVDhi(0)
85cbec76 179{
180 //
181 // AliTRDdigitizer constructor
f7336fa3 182 //
183
3551db50 184 Init();
3becff3c 185
bfc40adc 186}
187
188//_____________________________________________________________________________
189AliTRDdigitizer::AliTRDdigitizer(AliRunDigitizer *manager)
4d18a639 190 :AliDigitizer(manager,"AliTRDdigitizer","TRD digitizer")
191 ,fRunLoader(0)
192 ,fDigitsManager(0)
193 ,fSDigitsManager(0)
194 ,fSDigitsManagerList(0)
195 ,fTRD(0)
196 ,fGeo(0)
ecf39416 197 ,fFee(0)
4d18a639 198 ,fEvent(0)
199 ,fMasks(0)
200 ,fCompress(kTRUE)
201 ,fSDigits(kFALSE)
202 ,fSDigitsScale(0.0)
203 ,fMergeSignalOnly(kFALSE)
204 ,fDiffLastVdrift(0)
205 ,fDiffusionT(0.0)
206 ,fDiffusionL(0.0)
207 ,fOmegaTau(0.0)
208 ,fLorentzFactor(0.0)
209 ,fTimeLastVdrift(0)
210 ,fTimeStruct1(0)
211 ,fTimeStruct2(0)
212 ,fVDlo(0)
213 ,fVDhi(0)
bfc40adc 214{
215 //
216 // AliTRDdigitizer constructor
217 //
218
3551db50 219 Init();
3becff3c 220
3551db50 221}
88cb7938 222
3551db50 223//_____________________________________________________________________________
224Bool_t AliTRDdigitizer::Init()
225{
3becff3c 226 //
227 // Initialize the digitizer with default values
228 //
229
85a5290f 230 fRunLoader = 0;
4487dad0 231 fDigitsManager = 0;
4487dad0 232 fSDigitsManager = 0;
85a5290f 233 fSDigitsManagerList = 0;
4487dad0 234 fTRD = 0;
235 fGeo = 0;
ecf39416 236 fFee = AliTRDfeeParam::Instance();
3becff3c 237
abaf1f1d 238 fEvent = 0;
85a5290f 239 fMasks = 0;
abaf1f1d 240 fCompress = kTRUE;
abaf1f1d 241 fSDigits = kFALSE;
4d18a639 242 fSDigitsScale = 100.0;
4487dad0 243 fMergeSignalOnly = kFALSE;
3551db50 244
4d18a639 245 fTimeLastVdrift = -1;
246 fTimeStruct1 = 0;
247 fTimeStruct2 = 0;
248 fVDlo = 0;
249 fVDhi = 0;
3551db50 250
4d18a639 251 fDiffLastVdrift = -1;
252 fDiffusionT = 0.0;
253 fDiffusionL = 0.0;
254 fLorentzFactor = 0.0;
793ff80c 255
3551db50 256 return AliDigitizer::Init();
3becff3c 257
f7336fa3 258}
259
8230f242 260//_____________________________________________________________________________
4d18a639 261AliTRDdigitizer::AliTRDdigitizer(const AliTRDdigitizer &d)
262 :AliDigitizer(d)
263 ,fRunLoader(0)
264 ,fDigitsManager(0)
265 ,fSDigitsManager(0)
266 ,fSDigitsManagerList(0)
267 ,fTRD(0)
268 ,fGeo(0)
ecf39416 269 ,fFee(0)
4d18a639 270 ,fEvent(0)
271 ,fMasks(0)
272 ,fCompress(d.fCompress)
273 ,fSDigits(d.fSDigits)
274 ,fSDigitsScale(d.fSDigitsScale)
275 ,fMergeSignalOnly(d.fMergeSignalOnly)
276 ,fDiffLastVdrift(-1)
277 ,fDiffusionT(0.0)
278 ,fDiffusionL(0.0)
279 ,fOmegaTau(0.0)
280 ,fLorentzFactor(0.0)
281 ,fTimeLastVdrift(-1)
282 ,fTimeStruct1(0)
283 ,fTimeStruct2(0)
284 ,fVDlo(0)
285 ,fVDhi(0)
8230f242 286{
287 //
288 // AliTRDdigitizer copy constructor
289 //
290
4d18a639 291 // Do not copy timestructs, just invalidate lastvdrift.
292 // Next time they are requested, they get recalculated
293 if (((AliTRDdigitizer &) d).fTimeStruct1) {
294 delete [] ((AliTRDdigitizer &) d).fTimeStruct1;
295 ((AliTRDdigitizer &) d).fTimeStruct1 = 0;
296 }
297 if (((AliTRDdigitizer &) d).fTimeStruct2) {
298 delete [] ((AliTRDdigitizer &) d).fTimeStruct2;
299 ((AliTRDdigitizer &) d).fTimeStruct2 = 0;
300 }
8230f242 301
302}
303
f7336fa3 304//_____________________________________________________________________________
305AliTRDdigitizer::~AliTRDdigitizer()
306{
8230f242 307 //
308 // AliTRDdigitizer destructor
309 //
f7336fa3 310
abaf1f1d 311 if (fDigitsManager) {
312 delete fDigitsManager;
4d18a639 313 fDigitsManager = 0;
f7336fa3 314 }
315
4d18a639 316 if (fDigitsManager) {
317 delete fSDigitsManager;
318 fSDigitsManager = 0;
319 }
f7336fa3 320
abaf1f1d 321 if (fSDigitsManagerList) {
47b5729a 322 fSDigitsManagerList->Delete();
abaf1f1d 323 delete fSDigitsManagerList;
4487dad0 324 fSDigitsManagerList = 0;
e23fbb27 325 }
326
327 if (fMasks) {
328 delete [] fMasks;
4329977a 329 fMasks = 0;
e23fbb27 330 }
331
4d18a639 332 if (fTimeStruct1) {
333 delete [] fTimeStruct1;
334 fTimeStruct1 = 0;
3551db50 335 }
336
4d18a639 337 if (fTimeStruct2) {
338 delete [] fTimeStruct2;
339 fTimeStruct2 = 0;
3551db50 340 }
3becff3c 341
f162af62 342 if (fGeo) {
343 delete fGeo;
344 fGeo = 0;
345 }
346
f7336fa3 347}
348
8230f242 349//_____________________________________________________________________________
dd9a6ee3 350AliTRDdigitizer &AliTRDdigitizer::operator=(const AliTRDdigitizer &d)
351{
352 //
353 // Assignment operator
354 //
355
356 if (this != &d) ((AliTRDdigitizer &) d).Copy(*this);
4d18a639 357
dd9a6ee3 358 return *this;
359
360}
361
362//_____________________________________________________________________________
e0d47c25 363void AliTRDdigitizer::Copy(TObject &d) const
8230f242 364{
365 //
366 // Copy function
367 //
368
85a5290f 369 ((AliTRDdigitizer &) d).fRunLoader = 0;
4487dad0 370 ((AliTRDdigitizer &) d).fDigitsManager = 0;
85a5290f 371 ((AliTRDdigitizer &) d).fSDigitsManager = 0;
372 ((AliTRDdigitizer &) d).fSDigitsManagerList = 0;
4487dad0 373 ((AliTRDdigitizer &) d).fTRD = 0;
374 ((AliTRDdigitizer &) d).fGeo = 0;
ecf39416 375 ((AliTRDdigitizer &) d).fFee = fFee;
85a5290f 376 ((AliTRDdigitizer &) d).fEvent = 0;
377 ((AliTRDdigitizer &) d).fMasks = 0;
abaf1f1d 378 ((AliTRDdigitizer &) d).fCompress = fCompress;
abaf1f1d 379 ((AliTRDdigitizer &) d).fSDigits = fSDigits;
380 ((AliTRDdigitizer &) d).fSDigitsScale = fSDigitsScale;
4487dad0 381 ((AliTRDdigitizer &) d).fMergeSignalOnly = fMergeSignalOnly;
0c24ba98 382
3551db50 383 AliTRDdigitizer& target = (AliTRDdigitizer &) d;
384
3becff3c 385 // Do not copy timestructs, just invalidate lastvdrift.
386 // Next time they are requested, they get recalculated
4d18a639 387 if (target.fTimeStruct1) {
95867fd1 388 delete [] target.fTimeStruct1;
4d18a639 389 target.fTimeStruct1 = 0;
3551db50 390 }
4d18a639 391 if (target.fTimeStruct2) {
95867fd1 392 delete [] target.fTimeStruct2;
4d18a639 393 target.fTimeStruct2 = 0;
3becff3c 394 }
4d18a639 395 target.fTimeLastVdrift = -1;
3becff3c 396
e23fbb27 397}
398
e23fbb27 399//_____________________________________________________________________________
4d18a639 400void AliTRDdigitizer::Exec(Option_t *option)
e23fbb27 401{
402 //
403 // Executes the merging
404 //
405
406 Int_t iInput;
407
408 AliTRDdigitsManager *sdigitsManager;
409
410 TString optionString = option;
411 if (optionString.Contains("deb")) {
9afbd7de 412 AliLog::SetClassDebugLevel("AliTRDdigitizer",1);
7925de54 413 AliInfo("Called with debug option");
e23fbb27 414 }
415
cec4059b 416 // The AliRoot file is already connected by the manager
4d18a639 417 AliRunLoader *inrl;
88cb7938 418
9afbd7de 419 if (gAlice) {
7925de54 420 AliDebug(1,"AliRun object found on file.");
9afbd7de 421 }
4487dad0 422 else {
88cb7938 423 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(0));
424 inrl->LoadgAlice();
425 gAlice = inrl->GetAliRun();
9afbd7de 426 if (!gAlice) {
7925de54 427 AliError("Could not find AliRun object.")
9afbd7de 428 return;
429 }
4487dad0 430 }
cec4059b 431
e23fbb27 432 Int_t nInput = fManager->GetNinputs();
4d18a639 433 fMasks = new Int_t[nInput];
e23fbb27 434 for (iInput = 0; iInput < nInput; iInput++) {
435 fMasks[iInput] = fManager->GetMask(iInput);
436 }
e23fbb27 437
9afbd7de 438 //
e23fbb27 439 // Initialization
9afbd7de 440 //
e23fbb27 441
95867fd1 442 AliRunLoader *orl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
443
67c67368 444 if (InitDetector()) {
9afbd7de 445
95867fd1 446 AliLoader *ogime = orl->GetLoader("TRDLoader");
67c67368 447
95867fd1 448 TTree *tree = 0;
9afbd7de 449 if (fSDigits) {
450 // If we produce SDigits
451 tree = ogime->TreeS();
452 if (!tree) {
453 ogime->MakeTree("S");
67c67368 454 tree = ogime->TreeS();
67c67368 455 }
9afbd7de 456 }
457 else {
458 // If we produce Digits
459 tree = ogime->TreeD();
460 if (!tree) {
461 ogime->MakeTree("D");
462 tree = ogime->TreeD();
67c67368 463 }
9afbd7de 464 }
465
67c67368 466 MakeBranch(tree);
9afbd7de 467
67c67368 468 }
469
e23fbb27 470 for (iInput = 0; iInput < nInput; iInput++) {
471
7925de54 472 AliDebug(1,Form("Add input stream %d",iInput));
e23fbb27 473
9afbd7de 474 // Check if the input tree exists
88cb7938 475 inrl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
4d18a639 476 AliLoader *gime = inrl->GetLoader("TRDLoader");
88cb7938 477
4d18a639 478 TTree *treees = gime->TreeS();
9afbd7de 479 if (treees == 0x0) {
480 if (gime->LoadSDigits()) {
481 AliError(Form("Error Occured while loading S. Digits for input %d.",iInput));
482 return;
483 }
4d18a639 484 treees = gime->TreeS();
9afbd7de 485 }
88cb7938 486
487 if (treees == 0x0) {
7925de54 488 AliError(Form("Input stream %d does not exist",iInput));
c57e2264 489 return;
490 }
491
e23fbb27 492 // Read the s-digits via digits manager
493 sdigitsManager = new AliTRDdigitsManager();
e23fbb27 494 sdigitsManager->SetSDigits(kTRUE);
88cb7938 495
4d18a639 496 AliRunLoader *rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
497 AliLoader *gimme = rl->GetLoader("TRDLoader");
498 if (!gimme->TreeS()) {
499 gimme->LoadSDigits();
500 }
88cb7938 501 sdigitsManager->ReadDigits(gimme->TreeS());
e23fbb27 502
503 // Add the s-digits to the input list
504 AddSDigitsManager(sdigitsManager);
505
506 }
507
508 // Convert the s-digits to normal digits
7925de54 509 AliDebug(1,"Do the conversion");
e23fbb27 510 SDigits2Digits();
511
512 // Store the digits
7925de54 513 AliDebug(1,"Write the digits");
e23fbb27 514 fDigitsManager->WriteDigits();
88cb7938 515
9afbd7de 516 // Write parameters
67c67368 517 orl->CdGAFile();
67c67368 518
7925de54 519 AliDebug(1,"Done");
e23fbb27 520
b1113c6b 521 DeleteSDigitsManager();
522
e23fbb27 523}
524
f7336fa3 525//_____________________________________________________________________________
e23fbb27 526Bool_t AliTRDdigitizer::Open(const Char_t *file, Int_t nEvent)
f7336fa3 527{
528 //
529 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
530 //
f7336fa3 531 // Connect the AliRoot file containing Geometry, Kine, and Hits
3becff3c 532 //
f540341d 533
e191bb57 534 TString evfoldname = AliConfig::GetDefaultEventFolderName();
9afbd7de 535
f540341d 536 fRunLoader = AliRunLoader::GetRunLoader(evfoldname);
9afbd7de 537 if (!fRunLoader) {
538 fRunLoader = AliRunLoader::Open(file,evfoldname,"UPDATE");
539 }
9afbd7de 540 if (!fRunLoader) {
95867fd1 541 AliError(Form("Can not open session for file %s.",file));
542 return kFALSE;
543 }
544
545 if (!fRunLoader->GetAliRun()) {
546 fRunLoader->LoadgAlice();
547 }
548 gAlice = fRunLoader->GetAliRun();
549
550 if (gAlice) {
7925de54 551 AliDebug(1,"AliRun object found on file.");
95867fd1 552 }
553 else {
7925de54 554 AliError("Could not find AliRun object.");
95867fd1 555 return kFALSE;
556 }
557
558 fEvent = nEvent;
559
560 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
561 if (!loader) {
562 AliError("Can not get TRD loader from Run Loader");
563 return kFALSE;
564 }
565
566 if (InitDetector()) {
567 TTree *tree = 0;
568 if (fSDigits) {
569 // If we produce SDigits
570 tree = loader->TreeS();
571 if (!tree) {
572 loader->MakeTree("S");
573 tree = loader->TreeS();
574 }
575 }
576 else {
577 // If we produce Digits
578 tree = loader->TreeD();
579 if (!tree) {
580 loader->MakeTree("D");
581 tree = loader->TreeD();
582 }
583 }
584 return MakeBranch(tree);
585 }
586 else {
587 return kFALSE;
588 }
589
590}
591
592//_____________________________________________________________________________
593Bool_t AliTRDdigitizer::Open(AliRunLoader *runLoader, Int_t nEvent)
594{
595 //
596 // Opens a ROOT-file with TRD-hits and reads in the hit-tree
597 //
598 // Connect the AliRoot file containing Geometry, Kine, and Hits
599 //
600
601 fRunLoader = runLoader;
602 if (!fRunLoader) {
603 AliError("RunLoader does not exist");
604 return kFALSE;
4d18a639 605 }
88cb7938 606
9afbd7de 607 if (!fRunLoader->GetAliRun()) {
608 fRunLoader->LoadgAlice();
609 }
88cb7938 610 gAlice = fRunLoader->GetAliRun();
611
da581aea 612 if (gAlice) {
7925de54 613 AliDebug(1,"AliRun object found on file.");
da581aea 614 }
615 else {
7925de54 616 AliError("Could not find AliRun object.");
da581aea 617 return kFALSE;
618 }
f7336fa3 619
620 fEvent = nEvent;
621
4d18a639 622 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 623 if (!loader) {
624 AliError("Can not get TRD loader from Run Loader");
625 return kFALSE;
626 }
88cb7938 627
abaf1f1d 628 if (InitDetector()) {
4d18a639 629 TTree *tree = 0;
9afbd7de 630 if (fSDigits) {
631 // If we produce SDigits
632 tree = loader->TreeS();
633 if (!tree) {
634 loader->MakeTree("S");
635 tree = loader->TreeS();
4d18a639 636 }
9afbd7de 637 }
638 else {
639 // If we produce Digits
95867fd1 640 tree = loader->TreeD();
9afbd7de 641 if (!tree) {
642 loader->MakeTree("D");
643 tree = loader->TreeD();
4d18a639 644 }
9afbd7de 645 }
88cb7938 646 return MakeBranch(tree);
abaf1f1d 647 }
648 else {
649 return kFALSE;
650 }
793ff80c 651
652}
653
654//_____________________________________________________________________________
655Bool_t AliTRDdigitizer::InitDetector()
656{
657 //
658 // Sets the pointer to the TRD detector and the geometry
659 //
660
dd9a6ee3 661 // Get the pointer to the detector class and check for version 1
4487dad0 662 fTRD = (AliTRD *) gAlice->GetDetector("TRD");
cec4059b 663 if (!fTRD) {
7925de54 664 AliFatal("No TRD module found");
cec4059b 665 exit(1);
666 }
dd9a6ee3 667 if (fTRD->IsVersion() != 1) {
7925de54 668 AliFatal("TRD must be version 1 (slow simulator)");
dd9a6ee3 669 exit(1);
670 }
671
672 // Get the geometry
f162af62 673 fGeo = new AliTRDgeometry();
dd9a6ee3 674
abaf1f1d 675 // Create a digits manager
47b5729a 676 delete fDigitsManager;
abaf1f1d 677 fDigitsManager = new AliTRDdigitsManager();
678 fDigitsManager->SetSDigits(fSDigits);
679 fDigitsManager->CreateArrays();
680 fDigitsManager->SetEvent(fEvent);
abaf1f1d 681
682 // The list for the input s-digits manager to be merged
47b5729a 683 if (fSDigitsManagerList) {
684 fSDigitsManagerList->Delete();
3becff3c 685 }
686 else {
47b5729a 687 fSDigitsManagerList = new TList();
688 }
abaf1f1d 689
4487dad0 690 return kTRUE;
f7336fa3 691
692}
693
6244debe 694//_____________________________________________________________________________
95867fd1 695Bool_t AliTRDdigitizer::MakeBranch(TTree *tree) const
6244debe 696{
abaf1f1d 697 //
698 // Create the branches for the digits array
6244debe 699 //
700
88cb7938 701 return fDigitsManager->MakeBranch(tree);
6244debe 702
703}
704
f7336fa3 705//_____________________________________________________________________________
706Bool_t AliTRDdigitizer::MakeDigits()
707{
708 //
872a7aba 709 // Creates digits.
f7336fa3 710 //
711
f7336fa3 712 ///////////////////////////////////////////////////////////////
713 // Parameter
714 ///////////////////////////////////////////////////////////////
715
716 // Converts number of electrons to fC
4d18a639 717 const Double_t kEl2fC = 1.602e-19 * 1.0e15;
f7336fa3 718
719 ///////////////////////////////////////////////////////////////
720
793ff80c 721 // Number of pads included in the pad response
a5cadd36 722 const Int_t kNpad = 3;
793ff80c 723
724 // Number of track dictionary arrays
a5cadd36 725 const Int_t kNDict = AliTRDdigitsManager::kNDict;
793ff80c 726
4329977a 727 // Width of the amplification region
728 const Float_t kAmWidth = AliTRDgeometry::AmThick();
3becff3c 729 // Width of the drift region
ccb4315c 730 const Float_t kDrWidth = AliTRDgeometry::DrThick();
4329977a 731 // Drift + amplification region
732 const Float_t kDrMin = - 0.5 * kAmWidth;
733 const Float_t kDrMax = kDrWidth + 0.5 * kAmWidth;
3551db50 734
4d18a639 735 Int_t iRow;
736 Int_t iCol;
737 Int_t iTime;
738 Int_t iPad;
a5cadd36 739 Int_t iDict = 0;
740 Int_t nBytes = 0;
f7336fa3 741
a5cadd36 742 Int_t totalSizeDigits = 0;
743 Int_t totalSizeDict0 = 0;
744 Int_t totalSizeDict1 = 0;
745 Int_t totalSizeDict2 = 0;
f7336fa3 746
a5cadd36 747 Int_t timeBinTRFend = 1;
872a7aba 748
a5cadd36 749 Double_t pos[3];
4329977a 750 Double_t loc[3];
a5cadd36 751 Double_t padSignal[kNpad];
752 Double_t signalOld[kNpad];
872a7aba 753
a5cadd36 754 AliTRDdataArrayF *signals = 0;
755 AliTRDdataArrayI *digits = 0;
8230f242 756 AliTRDdataArrayI *dictionary[kNDict];
da581aea 757
a5cadd36 758 AliTRDpadPlane *padPlane = 0;
759
4329977a 760 AliTRDCalROC *calVdriftROC = 0;
761 Float_t calVdriftDetValue = 0.0;
762 AliTRDCalROC *calT0ROC = 0;
763 Float_t calT0DetValue = 0.0;
764 AliTRDCalROC *calGainFactorROC = 0;
765 Float_t calGainFactorDetValue = 0.0;
766
9afbd7de 767 if (!gGeoManager) {
768 AliFatal("No geometry manager!");
769 }
7754cd1f 770
4329977a 771 if (!fGeo) {
772 AliError("No geometry defined");
773 return kFALSE;
774 }
4329977a 775
9afbd7de 776 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
3becff3c 777 if (!simParam) {
4329977a 778 AliFatal("Could not get simulation parameters");
3551db50 779 return kFALSE;
780 }
781
9afbd7de 782 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
3becff3c 783 if (!commonParam) {
4329977a 784 AliFatal("Could not get common parameterss");
3551db50 785 return kFALSE;
786 }
793ff80c 787
4329977a 788 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
3becff3c 789 if (!calibration) {
4329977a 790 AliFatal("Could not get calibration object");
3551db50 791 return kFALSE;
792 }
793
4329977a 794 AliDebug(1,"Start creating digits");
795
796 // Create a container for the amplitudes
797 AliTRDsegmentArray *signalsArray = new AliTRDsegmentArray("AliTRDdataArrayF"
798 ,AliTRDgeometry::Ndet());
872a7aba 799
4d18a639 800 AliLoader *gimme = fRunLoader->GetLoader("TRDLoader");
9afbd7de 801 if (!gimme->TreeH()) {
802 gimme->LoadHits();
803 }
4d18a639 804 TTree *hitTree = gimme->TreeH();
3becff3c 805 if (hitTree == 0x0) {
9afbd7de 806 AliError("Can not get TreeH");
807 return kFALSE;
3becff3c 808 }
88cb7938 809 fTRD->SetTreeAddress();
4329977a 810
793ff80c 811 // Get the number of entries in the hit tree
812 // (Number of primary particles creating a hit somewhere)
3becff3c 813 Int_t nTrack = (Int_t) hitTree->GetEntries();
7925de54 814 AliDebug(1,Form("Found %d primary particles",nTrack));
815 AliDebug(1,Form("Sampling = %.0fMHz" ,commonParam->GetSamplingFrequency()));
816 AliDebug(1,Form("Gain = %d" ,((Int_t) simParam->GetGasGain())));
817 AliDebug(1,Form("Noise = %d" ,((Int_t) simParam->GetNoise())));
9afbd7de 818 if (simParam->TimeStructOn()) {
7925de54 819 AliDebug(1,"Time Structure of drift cells implemented.");
9afbd7de 820 }
821 else {
7925de54 822 AliDebug(1,"Constant drift velocity in drift cells.");
a328fff9 823 }
4329977a 824 if (simParam->TRFOn()) {
825 timeBinTRFend = ((Int_t) (simParam->GetTRFhi()
826 * commonParam->GetSamplingFrequency())) - 1;
827 AliDebug(1,Form("Sample the TRF up to bin %d",timeBinTRFend));
828 }
829
830 // Get the detector wise calibration objects
831 const AliTRDCalDet *calVdriftDet = calibration->GetVdriftDet();
832 const AliTRDCalDet *calT0Det = calibration->GetT0Det();
833 const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
834
9afbd7de 835 Int_t detectorOld = -1;
836 Int_t countHits = 0;
837
3becff3c 838 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
b43a3e17 839 Float_t samplingRate = commonParam->GetSamplingFrequency();
4329977a 840 Float_t elAttachProp = simParam->GetElAttachProp() / 100.0;
a328fff9 841
793ff80c 842 // Loop through all entries in the tree
843 for (Int_t iTrack = 0; iTrack < nTrack; iTrack++) {
844
3becff3c 845 gAlice->ResetHits();
846 nBytes += hitTree->GetEvent(iTrack);
793ff80c 847
e23fbb27 848 // Loop through the TRD hits
849 Int_t iHit = 0;
850 AliTRDhit *hit = (AliTRDhit *) fTRD->FirstHit(-1);
851 while (hit) {
852
793ff80c 853 countHits++;
e23fbb27 854 iHit++;
855
f881dc35 856 Float_t q = hit->GetCharge();
b08ed1cf 857 // Don't analyze test hits
f881dc35 858 if (((Int_t) q) == 0) {
859 hit = (AliTRDhit *) fTRD->NextHit();
860 continue;
861 }
e153aaf6 862
f881dc35 863 pos[0] = hit->X();
864 pos[1] = hit->Y();
865 pos[2] = hit->Z();
866 Int_t track = hit->Track();
867 Int_t detector = hit->GetDetector();
2fa01832 868 Float_t hittime = hit->GetTime();
f881dc35 869 Int_t plane = fGeo->GetPlane(detector);
870 Int_t chamber = fGeo->GetChamber(detector);
f162af62 871 padPlane = fGeo->GetPadPlane(plane,chamber);
4329977a 872 Float_t row0 = padPlane->GetRow0ROC();
f881dc35 873 Int_t nRowMax = padPlane->GetNrows();
874 Int_t nColMax = padPlane->GetNcols();
875 Int_t inDrift = 1;
876
877 // Find the current volume with the geo manager
4329977a 878 gGeoManager->SetCurrentPoint(pos);
9a96f175 879 gGeoManager->FindNode();
4329977a 880 if (strstr(gGeoManager->GetPath(),"/UK")) {
881 inDrift = 0;
882 }
f881dc35 883
884 if (detector != detectorOld) {
885
886 // Compress the old one if enabled
887 if ((fCompress) && (detectorOld > -1)) {
888 signals->Compress(1,0);
889 for (iDict = 0; iDict < kNDict; iDict++) {
890 dictionary[iDict]->Compress(1,0);
891 }
892 }
893 // Get the new container
894 signals = (AliTRDdataArrayF *) signalsArray->At(detector);
895 if (signals->GetNtime() == 0) {
896 // Allocate a new one if not yet existing
897 signals->Allocate(nRowMax,nColMax,nTimeTotal);
898 }
899 else {
900 // Expand an existing one
901 if (fCompress) {
902 signals->Expand();
793ff80c 903 }
f881dc35 904 }
905 // The same for the dictionary
906 for (iDict = 0; iDict < kNDict; iDict++) {
907 dictionary[iDict] = fDigitsManager->GetDictionary(detector,iDict);
908 if (dictionary[iDict]->GetNtime() == 0) {
909 dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
793ff80c 910 }
911 else {
f881dc35 912 if (fCompress) dictionary[iDict]->Expand();
913 }
914 }
4329977a 915
916 // Get the calibration objects
917 calVdriftROC = calibration->GetVdriftROC(detector);
918 calVdriftDetValue = calVdriftDet->GetValue(detector);
919 calT0ROC = calibration->GetT0ROC(detector);
920 calT0DetValue = calT0Det->GetValue(detector);
921
f881dc35 922 detectorOld = detector;
4329977a 923
f881dc35 924 }
793ff80c 925
4329977a 926 // Go to the local coordinate system:
927 // loc[0] - col direction in amplification or driftvolume
928 // loc[1] - row direction in amplification or driftvolume
929 // loc[2] - time direction in amplification or driftvolume
930 gGeoManager->MasterToLocal(pos,loc);
f881dc35 931 if (inDrift) {
4329977a 932 // Relative to middle of amplification region
933 loc[2] = loc[2] - kDrWidth/2.0 - kAmWidth/2.0;
f881dc35 934 }
4329977a 935
936 // The driftlength [cm] (w/o diffusion yet !).
937 // It is negative if the hit is between pad plane and anode wires.
938 Double_t driftlength = -1.0 * loc[2];
939
940 // Stupid patch to take care of TR photons that are absorbed
941 // outside the chamber volume. A real fix would actually need
942 // a more clever implementation of the TR hit generation
943 if (q < 0.0) {
944 if ((loc[1] < padPlane->GetRowEndROC()) ||
945 (loc[1] > padPlane->GetRow0ROC())) {
946 hit = (AliTRDhit *) fTRD->NextHit();
947 continue;
948 }
949 if ((driftlength < kDrMin) ||
950 (driftlength > kDrMax)) {
951 hit = (AliTRDhit *) fTRD->NextHit();
952 continue;
953 }
729161c5 954 }
955
4329977a 956 // Get row and col of unsmeared electron to retrieve drift velocity
957 // The pad row (z-direction)
958 Int_t rowE = padPlane->GetPadRowNumberROC(loc[1]);
959 if (rowE < 0) {
960 hit = (AliTRDhit *) fTRD->NextHit();
961 continue;
962 }
963 Double_t rowOffset = padPlane->GetPadRowOffsetROC(rowE,loc[1]);
964
965 // The pad column (rphi-direction)
966 Double_t offsetTilt = padPlane->GetTiltOffset(rowOffset);
967 Int_t colE = padPlane->GetPadColNumber(loc[0]+offsetTilt);
968 if (colE < 0) {
969 hit = (AliTRDhit *) fTRD->NextHit();
970 continue;
971 }
972 Double_t colOffset = padPlane->GetPadColOffset(colE,loc[0]+offsetTilt);
973
974 Float_t driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
975
976 // Normalized drift length
977 Double_t absdriftlength = TMath::Abs(driftlength);
978 if (commonParam->ExBOn()) {
979 absdriftlength /= TMath::Sqrt(GetLorentzFactor(driftvelocity));
980 }
f881dc35 981
982 // Loop over all electrons of this hit
983 // TR photons produce hits with negative charge
984 Int_t nEl = ((Int_t) TMath::Abs(q));
985 for (Int_t iEl = 0; iEl < nEl; iEl++) {
986
4329977a 987 // Now the real local coordinate system of the ROC
988 // column direction: locC
989 // row direction: locR
990 // time direction: locT
991 // locR and locC are identical to the coordinates of the corresponding
992 // volumina of the drift or amplification region.
993 // locT is defined relative to the wire plane (i.e. middle of amplification
994 // region), meaming locT = 0, and is negative for hits coming from the
995 // drift region.
996 Double_t locC = loc[0];
997 Double_t locR = loc[1];
998 Double_t locT = loc[2];
3551db50 999
f881dc35 1000 // Electron attachment
1001 if (simParam->ElAttachOn()) {
4329977a 1002 if (gRandom->Rndm() < (absdriftlength * elAttachProp)) {
1003 continue;
1004 }
f881dc35 1005 }
3551db50 1006
f881dc35 1007 // Apply the diffusion smearing
1008 if (simParam->DiffusionOn()) {
4329977a 1009 if (!(Diffusion(driftvelocity,absdriftlength,locR,locC,locT))) {
1010 continue;
1011 }
f881dc35 1012 }
3551db50 1013
f881dc35 1014 // Apply E x B effects (depends on drift direction)
1015 if (commonParam->ExBOn()) {
4329977a 1016 if (!(ExB(driftvelocity,driftlength,locC))) {
1017 continue;
1018 }
f881dc35 1019 }
3551db50 1020
f881dc35 1021 // The electron position after diffusion and ExB in pad coordinates.
1022 // The pad row (z-direction)
4329977a 1023 rowE = padPlane->GetPadRowNumberROC(locR);
f881dc35 1024 if (rowE < 0) continue;
4329977a 1025 rowOffset = padPlane->GetPadRowOffsetROC(rowE,locR);
f881dc35 1026
1027 // The pad column (rphi-direction)
1028 offsetTilt = padPlane->GetTiltOffset(rowOffset);
4329977a 1029 colE = padPlane->GetPadColNumber(locC+offsetTilt);
f881dc35 1030 if (colE < 0) continue;
4329977a 1031 colOffset = padPlane->GetPadColOffset(colE,locC+offsetTilt);
3551db50 1032
f881dc35 1033 // Also re-retrieve drift velocity because col and row may have changed
4329977a 1034 driftvelocity = calVdriftDetValue * calVdriftROC->GetValue(colE,rowE);
1035 Float_t t0 = calT0DetValue + calT0ROC->GetValue(colE,rowE);
d4c6453d 1036
4329977a 1037 // Convert the position to drift time [mus], using either constant drift velocity or
f881dc35 1038 // time structure of drift cells (non-isochronity, GARFIELD calculation).
4329977a 1039 // Also add absolute time of hits to take pile-up events into account properly
f881dc35 1040 Double_t drifttime;
1041 if (simParam->TimeStructOn()) {
4329977a 1042 // Get z-position with respect to anode wire
1043 Double_t zz = row0 - locR + simParam->GetAnodeWireOffset();
1044 zz -= ((Int_t)(2 * zz)) / 2.0;
1045 if (zz > 0.25) {
1046 zz = 0.5 - zz;
e23fbb27 1047 }
f881dc35 1048 // Use drift time map (GARFIELD)
4329977a 1049 drifttime = TimeStruct(driftvelocity,0.5*kAmWidth-1.0*locT,zz)
2fa01832 1050 + hittime;
f881dc35 1051 }
1052 else {
1053 // Use constant drift velocity
4329977a 1054 drifttime = -1.0 * locT / driftvelocity
2fa01832 1055 + hittime;
f881dc35 1056 }
ccb4315c 1057
f881dc35 1058 // Apply the gas gain including fluctuations
1059 Double_t ggRndm = 0.0;
1060 do {
1061 ggRndm = gRandom->Rndm();
1062 } while (ggRndm <= 0);
1063 Int_t signal = (Int_t) (-(simParam->GetGasGain()) * TMath::Log(ggRndm));
1064
1065 // Apply the pad response
1066 if (simParam->PRFOn()) {
1067 // The distance of the electron to the center of the pad
1068 // in units of pad width
1069 Double_t dist = (colOffset - 0.5*padPlane->GetColSize(colE))
1070 / padPlane->GetColSize(colE);
4329977a 1071 // This is still the fixed parametrization, i.e. not dependent on
1072 // calibration values !!!!
f881dc35 1073 if (!(calibration->PadResponse(signal,dist,plane,padSignal))) continue;
1074 }
1075 else {
1076 padSignal[0] = 0.0;
1077 padSignal[1] = signal;
1078 padSignal[2] = 0.0;
1079 }
e23fbb27 1080
4329977a 1081 // The time bin (always positive), with t0 distortion
f881dc35 1082 Double_t timeBinIdeal = drifttime * samplingRate + t0;
1083 // Protection
1084 if (TMath::Abs(timeBinIdeal) > 2*nTimeTotal) {
1085 timeBinIdeal = 2 * nTimeTotal;
1086 }
1087 Int_t timeBinTruncated = (Int_t) timeBinIdeal;
1088 // The distance of the position to the middle of the timebin
1089 Double_t timeOffset = ((Float_t) timeBinTruncated
1090 + 0.5 - timeBinIdeal) / samplingRate;
6a739e92 1091
f881dc35 1092 // Sample the time response inside the drift region
1093 // + additional time bins before and after.
1094 // The sampling is done always in the middle of the time bin
4329977a 1095 for (Int_t iTimeBin = TMath::Max(timeBinTruncated,0)
1096 ;iTimeBin < TMath::Min(timeBinTruncated+timeBinTRFend,nTimeTotal)
1097 ;iTimeBin++) {
f881dc35 1098
1099 // Apply the time response
1100 Double_t timeResponse = 1.0;
1101 Double_t crossTalk = 0.0;
1102 Double_t time = (iTimeBin - timeBinTruncated) / samplingRate + timeOffset;
1103 if (simParam->TRFOn()) {
1104 timeResponse = simParam->TimeResponse(time);
1105 }
1106 if (simParam->CTOn()) {
1107 crossTalk = simParam->CrossTalk(time);
1108 }
e23fbb27 1109
f881dc35 1110 signalOld[0] = 0.0;
1111 signalOld[1] = 0.0;
1112 signalOld[2] = 0.0;
f7336fa3 1113
f881dc35 1114 for (iPad = 0; iPad < kNpad; iPad++) {
e23fbb27 1115
f881dc35 1116 Int_t colPos = colE + iPad - 1;
1117 if (colPos < 0) continue;
1118 if (colPos >= nColMax) break;
e23fbb27 1119
f881dc35 1120 // Add the signals
1121 Int_t iCurrentTimeBin = iTimeBin;
1122 signalOld[iPad] = signals->GetDataUnchecked(rowE,colPos,iCurrentTimeBin);
1123 if (colPos != colE) {
1124 signalOld[iPad] += padSignal[iPad] * (timeResponse + crossTalk);
1125 }
1126 else {
1127 signalOld[iPad] += padSignal[iPad] * timeResponse;
1128 }
1129 signals->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,signalOld[iPad]);
1130
1131 // Store the track index in the dictionary
1132 // Note: We store index+1 in order to allow the array to be compressed
1133 if (signalOld[iPad] > 0) {
1134 for (iDict = 0; iDict < kNDict; iDict++) {
1135 Int_t oldTrack = dictionary[iDict]->GetDataUnchecked(rowE
1136 ,colPos
1137 ,iCurrentTimeBin);
1138 if (oldTrack == track+1) break;
1139 if (oldTrack == 0) {
1140 dictionary[iDict]->SetDataUnchecked(rowE,colPos,iCurrentTimeBin,track+1);
1141 break;
71d9fa7b 1142 }
1143 }
f881dc35 1144 }
872a7aba 1145
f881dc35 1146 } // Loop: pads
f7336fa3 1147
f881dc35 1148 } // Loop: time bins
f7336fa3 1149
f881dc35 1150 } // Loop: electrons of a single hit
f7336fa3 1151
e23fbb27 1152 hit = (AliTRDhit *) fTRD->NextHit();
f7336fa3 1153
e23fbb27 1154 } // Loop: hits of one primary track
1155
1156 } // Loop: primary tracks
1157
7925de54 1158 AliDebug(1,Form("Finished analyzing %d hits",countHits));
793ff80c 1159
4329977a 1160 //____________________________________________________________________
1161 //
1162 // Create (s)digits
1163 //____________________________________________________________________
1164 //
1165
0c24ba98 1166 // The coupling factor
3551db50 1167 Double_t coupling = simParam->GetPadCoupling()
9afbd7de 1168 * simParam->GetTimeCoupling();
0c24ba98 1169
1170 // The conversion factor
9afbd7de 1171 Double_t convert = kEl2fC
1172 * simParam->GetChipGain();
6244debe 1173
793ff80c 1174 // Loop through all chambers to finalize the digits
0c24ba98 1175 Int_t iDetBeg = 0;
1176 Int_t iDetEnd = AliTRDgeometry::Ndet();
0c24ba98 1177 for (Int_t iDet = iDetBeg; iDet < iDetEnd; iDet++) {
793ff80c 1178
4d18a639 1179 Int_t plane = fGeo->GetPlane(iDet);
1180 Int_t sector = fGeo->GetSector(iDet);
1181 Int_t chamber = fGeo->GetChamber(iDet);
f162af62 1182 Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector);
1183 Int_t nColMax = fGeo->GetColMax(plane);
793ff80c 1184
4d18a639 1185 Double_t *inADC = new Double_t[nTimeTotal];
1186 Double_t *outADC = new Double_t[nTimeTotal];
e23fbb27 1187
793ff80c 1188 // Add a container for the digits of this detector
abaf1f1d 1189 digits = fDigitsManager->GetDigits(iDet);
793ff80c 1190 // Allocate memory space for the digits buffer
0c24ba98 1191 if (digits->GetNtime() == 0) {
1192 digits->Allocate(nRowMax,nColMax,nTimeTotal);
1193 }
0c24ba98 1194
793ff80c 1195 // Get the signal container
1196 signals = (AliTRDdataArrayF *) signalsArray->At(iDet);
1197 if (signals->GetNtime() == 0) {
1198 // Create missing containers
872a7aba 1199 signals->Allocate(nRowMax,nColMax,nTimeTotal);
793ff80c 1200 }
1201 else {
1202 // Expand the container if neccessary
1203 if (fCompress) signals->Expand();
1204 }
1205 // Create the missing dictionary containers
3becff3c 1206 for (iDict = 0; iDict < kNDict; iDict++) {
1207 dictionary[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
1208 if (dictionary[iDict]->GetNtime() == 0) {
1209 dictionary[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
0c24ba98 1210 }
793ff80c 1211 }
f7336fa3 1212
793ff80c 1213 Int_t nDigits = 0;
1214
9afbd7de 1215 // Don't create noise in detectors that are switched off / not installed, etc.
6bf5f0ce 1216 if (( calibration->IsChamberInstalled(iDet)) &&
1217 (!calibration->IsChamberMasked(iDet)) &&
9bf8c575 1218 ( fGeo->ChamberInGeometry(iDet))) {
6244debe 1219
4329977a 1220 // Get the calibration objects
1221 calGainFactorROC = calibration->GetGainFactorROC(iDet);
1222 calGainFactorDetValue = calGainFactorDet->GetValue(iDet);
1223
6244debe 1224 // Create the digits for this chamber
872a7aba 1225 for (iRow = 0; iRow < nRowMax; iRow++ ) {
1226 for (iCol = 0; iCol < nColMax; iCol++ ) {
6244debe 1227
6bf5f0ce 1228 // Check whether pad is masked
1229 // Bridged pads are not considered yet!!!
4329977a 1230 if (calibration->IsPadMasked(iDet,iCol,iRow)) {
1231 continue;
1232 }
9afbd7de 1233
e23fbb27 1234 // Create summable digits
1235 if (fSDigits) {
6244debe 1236
e23fbb27 1237 for (iTime = 0; iTime < nTimeTotal; iTime++) {
872a7aba 1238 Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
abaf1f1d 1239 signalAmp *= fSDigitsScale;
e23fbb27 1240 signalAmp = TMath::Min(signalAmp,(Float_t) 1.0e9);
abaf1f1d 1241 Int_t adc = (Int_t) signalAmp;
4487dad0 1242 if (adc > 0) nDigits++;
872a7aba 1243 digits->SetDataUnchecked(iRow,iCol,iTime,adc);
c1e4b257 1244 }
6244debe 1245
e23fbb27 1246 }
1247 // Create normal digits
1248 else {
6244debe 1249
4329977a 1250 Float_t padgain = calGainFactorDetValue
1251 * calGainFactorROC->GetValue(iCol,iRow);
1252 if (padgain <= 0) {
1253 AliError(Form("Not a valid gain %f, %d %d %d",padgain,iDet,iCol,iRow));
1254 }
1255
e23fbb27 1256 for (iTime = 0; iTime < nTimeTotal; iTime++) {
4d18a639 1257
e23fbb27 1258 Float_t signalAmp = signals->GetDataUnchecked(iRow,iCol,iTime);
11dc3a9e 1259
0c24ba98 1260 // Pad and time coupling
1261 signalAmp *= coupling;
4329977a 1262 // Gain factors
7eea788e 1263 signalAmp *= padgain;
11dc3a9e 1264
7e582e9f 1265 // Add the noise, starting from minus ADC baseline in electrons
4329977a 1266 Double_t baselineEl = simParam->GetADCbaseline()
1267 * (simParam->GetADCinRange() / simParam->GetADCoutRange())
1268 / convert;
3551db50 1269 signalAmp = TMath::Max((Double_t) gRandom->Gaus(signalAmp,simParam->GetNoise())
7e582e9f 1270 ,-baselineEl);
6244debe 1271 // Convert to mV
1272 signalAmp *= convert;
7e582e9f 1273 // Add ADC baseline in mV
4329977a 1274 signalAmp += simParam->GetADCbaseline()
1275 * (simParam->GetADCinRange() / simParam->GetADCoutRange());
11dc3a9e 1276 // Convert to ADC counts. Set the overflow-bit fADCoutRange if the
6244debe 1277 // signal is larger than fADCinRange
1278 Int_t adc = 0;
3551db50 1279 if (signalAmp >= simParam->GetADCinRange()) {
1280 adc = ((Int_t) simParam->GetADCoutRange());
6244debe 1281 }
1282 else {
11dc3a9e 1283 adc = TMath::Nint(signalAmp * (simParam->GetADCoutRange()
4d18a639 1284 / simParam->GetADCinRange()));
6244debe 1285 }
11dc3a9e 1286
e23fbb27 1287 inADC[iTime] = adc;
1288 outADC[iTime] = adc;
4d18a639 1289
e23fbb27 1290 }
6244debe 1291
e23fbb27 1292 for (iTime = 0; iTime < nTimeTotal; iTime++) {
4dbcb0eb 1293 //if (outADC[iTime] != 0 ) { // Now this is enough because there is ZS in raw simulator
1294 // Reintroduce threshold as a temporary fix for the digits file size problem
1295 if (outADC[iTime] > (simParam->GetADCbaseline() + 3)) {
6244debe 1296 nDigits++;
3583ac1a 1297 digits->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime]));
6244debe 1298 }
6244debe 1299 }
1300
1301 }
e23fbb27 1302
6244debe 1303 }
793ff80c 1304 }
6244debe 1305
793ff80c 1306 }
1307
1308 // Compress the arrays
3becff3c 1309 digits->Compress(1,0);
1310 for (iDict = 0; iDict < kNDict; iDict++) {
1311 dictionary[iDict]->Compress(1,0);
1312 }
f7336fa3 1313
3becff3c 1314 totalSizeDigits += digits->GetSize();
1315 totalSizeDict0 += dictionary[0]->GetSize();
1316 totalSizeDict1 += dictionary[1]->GetSize();
1317 totalSizeDict2 += dictionary[2]->GetSize();
0c24ba98 1318
f881dc35 1319 if (nDigits > 0) {
1320 Float_t nPixel = nRowMax * nColMax * nTimeTotal;
7925de54 1321 AliDebug(1,Form("Found %d digits in detector %d (%3.0f)."
f881dc35 1322 ,nDigits,iDet
1323 ,100.0 * ((Float_t) nDigits) / nPixel));
1324 }
abaf1f1d 1325
9afbd7de 1326 if (fCompress) {
1327 signals->Compress(1,0);
1328 }
f7336fa3 1329
e23fbb27 1330 delete [] inADC;
1331 delete [] outADC;
1332
f7336fa3 1333 }
1334
0c24ba98 1335 if (signalsArray) {
1336 delete signalsArray;
1337 signalsArray = 0;
1338 }
1339
7925de54 1340 AliDebug(1,Form("Total number of analyzed hits = %d",countHits));
1341 AliDebug(1,Form("Total digits data size = %d, %d, %d, %d",totalSizeDigits
4329977a 1342 ,totalSizeDict0
1343 ,totalSizeDict1
1344 ,totalSizeDict2));
abaf1f1d 1345
1346 return kTRUE;
1347
1348}
1349
1350//_____________________________________________________________________________
1351void AliTRDdigitizer::AddSDigitsManager(AliTRDdigitsManager *man)
1352{
1353 //
1354 // Add a digits manager for s-digits to the input list.
1355 //
1356
1357 fSDigitsManagerList->Add(man);
1358
1359}
1360
b1113c6b 1361//_____________________________________________________________________________
1362void AliTRDdigitizer::DeleteSDigitsManager()
1363{
1364 //
1365 // Removes digits manager from the input list.
1366 //
1367
1368 fSDigitsManagerList->Delete();
1369
1370}
1371
abaf1f1d 1372//_____________________________________________________________________________
1373Bool_t AliTRDdigitizer::ConvertSDigits()
1374{
1375 //
1376 // Converts s-digits to normal digits
1377 //
1378
1379 // Number of track dictionary arrays
1380 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1381
1382 // Converts number of electrons to fC
4d18a639 1383 const Double_t kEl2fC = 1.602e-19 * 1.0e15;
abaf1f1d 1384
1385 Int_t iDict = 0;
e23fbb27 1386 Int_t iRow;
1387 Int_t iCol;
1388 Int_t iTime;
abaf1f1d 1389
4329977a 1390 AliTRDCalROC *calGainFactorROC = 0;
1391 Float_t calGainFactorDetValue = 0.0;
1392
1393 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 1394 if (!simParam) {
4329977a 1395 AliFatal("Could not get simulation parameters");
3551db50 1396 return kFALSE;
1397 }
1398
4329977a 1399 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1400 if (!calibration) {
4329977a 1401 AliFatal("Could not get calibration object");
3551db50 1402 return kFALSE;
1403 }
1404
abaf1f1d 1405 Double_t sDigitsScale = 1.0 / GetSDigitsScale();
3551db50 1406 Double_t noise = simParam->GetNoise();
1407 Double_t padCoupling = simParam->GetPadCoupling();
1408 Double_t timeCoupling = simParam->GetTimeCoupling();
1409 Double_t chipGain = simParam->GetChipGain();
0c24ba98 1410 Double_t coupling = padCoupling * timeCoupling;
1411 Double_t convert = kEl2fC * chipGain;
3551db50 1412 Double_t adcInRange = simParam->GetADCinRange();
1413 Double_t adcOutRange = simParam->GetADCoutRange();
3551db50 1414 Int_t adcBaseline = simParam->GetADCbaseline();
9afbd7de 1415 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1416
abaf1f1d 1417 AliTRDdataArrayI *digitsIn;
1418 AliTRDdataArrayI *digitsOut;
1419 AliTRDdataArrayI *dictionaryIn[kNDict];
1420 AliTRDdataArrayI *dictionaryOut[kNDict];
4329977a 1421
1422 // Get the detector wise calibration objects
1423 const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet();
3551db50 1424
abaf1f1d 1425 // Loop through the detectors
1426 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
da581aea 1427
abaf1f1d 1428 Int_t plane = fGeo->GetPlane(iDet);
1429 Int_t sector = fGeo->GetSector(iDet);
1430 Int_t chamber = fGeo->GetChamber(iDet);
f162af62 1431 Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector);
1432 Int_t nColMax = fGeo->GetColMax(plane);
abaf1f1d 1433
e23fbb27 1434 Double_t *inADC = new Double_t[nTimeTotal];
1435 Double_t *outADC = new Double_t[nTimeTotal];
1436
abaf1f1d 1437 digitsIn = fSDigitsManager->GetDigits(iDet);
1438 digitsIn->Expand();
1439 digitsOut = fDigitsManager->GetDigits(iDet);
1440 digitsOut->Allocate(nRowMax,nColMax,nTimeTotal);
1441 for (iDict = 0; iDict < kNDict; iDict++) {
1442 dictionaryIn[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
1443 dictionaryIn[iDict]->Expand();
1444 dictionaryOut[iDict] = fDigitsManager->GetDictionary(iDet,iDict);
1445 dictionaryOut[iDict]->Allocate(nRowMax,nColMax,nTimeTotal);
1446 }
1447
6bf5f0ce 1448 // Don't create noise in detectors that are switched off / not installed, etc.
1449 if (( calibration->IsChamberInstalled(iDet)) &&
1450 (!calibration->IsChamberMasked(iDet)) &&
9bf8c575 1451 ( fGeo->ChamberInGeometry(iDet))) {
abaf1f1d 1452
4329977a 1453 // Get the calibration objects
1454 calGainFactorROC = calibration->GetGainFactorROC(iDet);
1455 calGainFactorDetValue = calGainFactorDet->GetValue(iDet);
1456
6bf5f0ce 1457 for (iRow = 0; iRow < nRowMax; iRow++ ) {
1458 for (iCol = 0; iCol < nColMax; iCol++ ) {
9afbd7de 1459
6bf5f0ce 1460 // Check whether pad is masked
1461 // Bridged pads are not considered yet!!!
4329977a 1462 if (calibration->IsPadMasked(iDet,iCol,iRow)) {
1463 continue;
1464 }
1465
1466 Float_t padgain = calGainFactorDetValue
1467 * calGainFactorROC->GetValue(iCol,iRow);
1468 if (padgain <= 0) {
1469 AliError(Form("Not a valid gain %f, %d %d %d",padgain,iDet,iCol,iRow));
1470 }
6bf5f0ce 1471
4329977a 1472 for (iTime = 0; iTime < nTimeTotal; iTime++) {
6bf5f0ce 1473
1474 // Scale s-digits to normal digits
1475 Double_t signal = (Double_t) digitsIn->GetDataUnchecked(iRow,iCol,iTime);
1476 signal *= sDigitsScale;
6bf5f0ce 1477 // Pad and time coupling
1478 signal *= coupling;
4329977a 1479 // Gain factors
1480 signal *= padgain;
6bf5f0ce 1481 // Add the noise, starting from minus ADC baseline in electrons
1482 Double_t baselineEl = adcBaseline * (adcInRange / adcOutRange) / convert;
1483 signal = TMath::Max((Double_t) gRandom->Gaus(signal,noise),-baselineEl);
1484 // Convert to mV
1485 signal *= convert;
1486 // add ADC baseline in mV
1487 signal += adcBaseline * (adcInRange / adcOutRange);
1488 // Convert to ADC counts. Set the overflow-bit adcOutRange if the
1489 // signal is larger than adcInRange
1490 Int_t adc = 0;
1491 if (signal >= adcInRange) {
1492 adc = ((Int_t) adcOutRange);
1493 }
1494 else {
1495 adc = TMath::Nint(signal * (adcOutRange / adcInRange));
1496 }
1497 inADC[iTime] = adc;
1498 outADC[iTime] = adc;
9afbd7de 1499
6bf5f0ce 1500 }
e23fbb27 1501
6bf5f0ce 1502 for (iTime = 0; iTime < nTimeTotal; iTime++) {
1503 // Store the amplitude of the digit if above threshold
4dbcb0eb 1504 //if (outADC[iTime] != 0) { // now this is ok because there is ZS in raw simulation
1505 // Reintroduce the threshold as a temporary fix for the digits file size
1506 if (outADC[iTime] > (adcBaseline + 3)) {
6bf5f0ce 1507 digitsOut->SetDataUnchecked(iRow,iCol,iTime,((Int_t) outADC[iTime]));
1508 // Copy the dictionary
1509 for (iDict = 0; iDict < kNDict; iDict++) {
1510 Int_t track = dictionaryIn[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1511 dictionaryOut[iDict]->SetDataUnchecked(iRow,iCol,iTime,track);
1512 }
e23fbb27 1513 }
abaf1f1d 1514 }
e23fbb27 1515
6bf5f0ce 1516 }
abaf1f1d 1517 }
6bf5f0ce 1518
abaf1f1d 1519 }
1520
1521 if (fCompress) {
1522 digitsIn->Compress(1,0);
1523 digitsOut->Compress(1,0);
1524 for (iDict = 0; iDict < kNDict; iDict++) {
1525 dictionaryIn[iDict]->Compress(1,0);
1526 dictionaryOut[iDict]->Compress(1,0);
1527 }
1528 }
1529
e23fbb27 1530 delete [] inADC;
1531 delete [] outADC;
1532
abaf1f1d 1533 }
f7336fa3 1534
1535 return kTRUE;
1536
1537}
1538
16bf9884 1539//_____________________________________________________________________________
abaf1f1d 1540Bool_t AliTRDdigitizer::MergeSDigits()
16bf9884 1541{
1542 //
abaf1f1d 1543 // Merges the input s-digits:
1544 // - The amplitude of the different inputs are summed up.
1545 // - Of the track IDs from the input dictionaries only one is
1546 // kept for each input. This works for maximal 3 different merged inputs.
16bf9884 1547 //
1548
abaf1f1d 1549 // Number of track dictionary arrays
1550 const Int_t kNDict = AliTRDdigitsManager::kNDict;
1551
4d18a639 1552 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 1553 if (!simParam) {
4329977a 1554 AliFatal("Could not get simulation parameters");
3551db50 1555 return kFALSE;
1556 }
1557
4d18a639 1558 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 1559 if (!calibration) {
4329977a 1560 AliFatal("Could not get calibration object");
3551db50 1561 return kFALSE;
1562 }
1563
abaf1f1d 1564 Int_t iDict = 0;
e23fbb27 1565 Int_t jDict = 0;
abaf1f1d 1566
1567 AliTRDdataArrayI *digitsA;
1568 AliTRDdataArrayI *digitsB;
1569 AliTRDdataArrayI *dictionaryA[kNDict];
1570 AliTRDdataArrayI *dictionaryB[kNDict];
1571
1572 // Get the first s-digits
1573 fSDigitsManager = (AliTRDdigitsManager *) fSDigitsManagerList->First();
9afbd7de 1574 if (!fSDigitsManager) {
7925de54 1575 AliError("No SDigits manager");
9afbd7de 1576 return kFALSE;
1577 }
abaf1f1d 1578
1579 // Loop through the other sets of s-digits
1580 AliTRDdigitsManager *mergeSDigitsManager;
4d18a639 1581 mergeSDigitsManager = (AliTRDdigitsManager *)
1582 fSDigitsManagerList->After(fSDigitsManager);
abaf1f1d 1583
9afbd7de 1584 if (mergeSDigitsManager) {
7925de54 1585 AliDebug(1,Form("Merge %d input files.",fSDigitsManagerList->GetSize()));
9afbd7de 1586 }
1587 else {
7925de54 1588 AliDebug(1,"Only one input file.");
abaf1f1d 1589 }
1590
3551db50 1591 Int_t nTimeTotal = calibration->GetNumberOfTimeBins();
1592
abaf1f1d 1593 Int_t iMerge = 0;
1594 while (mergeSDigitsManager) {
1595
1596 iMerge++;
1597
1598 // Loop through the detectors
1599 for (Int_t iDet = 0; iDet < AliTRDgeometry::Ndet(); iDet++) {
1600
4d18a639 1601 Int_t plane = fGeo->GetPlane(iDet);
1602 Int_t sector = fGeo->GetSector(iDet);
1603 Int_t chamber = fGeo->GetChamber(iDet);
f162af62 1604 Int_t nRowMax = fGeo->GetRowMax(plane,chamber,sector);
1605 Int_t nColMax = fGeo->GetColMax(plane);
abaf1f1d 1606
1607 // Loop through the pixels of one detector and add the signals
1608 digitsA = fSDigitsManager->GetDigits(iDet);
1609 digitsB = mergeSDigitsManager->GetDigits(iDet);
1610 digitsA->Expand();
1611 digitsB->Expand();
1612 for (iDict = 0; iDict < kNDict; iDict++) {
1613 dictionaryA[iDict] = fSDigitsManager->GetDictionary(iDet,iDict);
1614 dictionaryB[iDict] = mergeSDigitsManager->GetDictionary(iDet,iDict);
1615 dictionaryA[iDict]->Expand();
1616 dictionaryB[iDict]->Expand();
1617 }
1618
4487dad0 1619 // Merge only detectors that contain a signal
1620 Bool_t doMerge = kTRUE;
1621 if (fMergeSignalOnly) {
1622 if (digitsA->GetOverThreshold(0) == 0) {
1623 doMerge = kFALSE;
1624 }
abaf1f1d 1625 }
1626
4487dad0 1627 if (doMerge) {
abaf1f1d 1628
7925de54 1629 AliDebug(1,Form("Merge detector %d of input no.%d",iDet,iMerge+1));
abaf1f1d 1630
4487dad0 1631 for (Int_t iRow = 0; iRow < nRowMax; iRow++ ) {
1632 for (Int_t iCol = 0; iCol < nColMax; iCol++ ) {
1633 for (Int_t iTime = 0; iTime < nTimeTotal; iTime++) {
1634
1635 // Add the amplitudes of the summable digits
1636 Int_t ampA = digitsA->GetDataUnchecked(iRow,iCol,iTime);
1637 Int_t ampB = digitsB->GetDataUnchecked(iRow,iCol,iTime);
1638 ampA += ampB;
1639 digitsA->SetDataUnchecked(iRow,iCol,iTime,ampA);
1640
9afbd7de 1641 // Add the mask to the track id if defined.
4487dad0 1642 for (iDict = 0; iDict < kNDict; iDict++) {
1643 Int_t trackB = dictionaryB[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1644 if ((fMasks) && (trackB > 0)) {
1645 for (jDict = 0; jDict < kNDict; jDict++) {
1646 Int_t trackA = dictionaryA[iDict]->GetDataUnchecked(iRow,iCol,iTime);
1647 if (trackA == 0) {
1648 trackA = trackB + fMasks[iMerge];
1649 dictionaryA[iDict]->SetDataUnchecked(iRow,iCol,iTime,trackA);
1650 }
1651 }
1652 }
e23fbb27 1653 }
abaf1f1d 1654
4487dad0 1655 }
abaf1f1d 1656 }
4487dad0 1657 }
1658
abaf1f1d 1659 }
1660
1661 if (fCompress) {
1662 digitsA->Compress(1,0);
1663 digitsB->Compress(1,0);
1664 for (iDict = 0; iDict < kNDict; iDict++) {
1665 dictionaryA[iDict]->Compress(1,0);
1666 dictionaryB[iDict]->Compress(1,0);
1667 }
1668 }
1669
1670 }
1671
1672 // The next set of s-digits
4d18a639 1673 mergeSDigitsManager = (AliTRDdigitsManager *)
1674 fSDigitsManagerList->After(mergeSDigitsManager);
abaf1f1d 1675
1676 }
1677
16bf9884 1678 return kTRUE;
1679
1680}
1681
abaf1f1d 1682//_____________________________________________________________________________
1683Bool_t AliTRDdigitizer::SDigits2Digits()
1684{
1685 //
1686 // Merges the input s-digits and converts them to normal digits
1687 //
1688
4d18a639 1689 if (!MergeSDigits()) {
1690 return kFALSE;
1691 }
abaf1f1d 1692
1693 return ConvertSDigits();
1694
1695}
1696
f7336fa3 1697//_____________________________________________________________________________
0a29d0f1 1698Bool_t AliTRDdigitizer::WriteDigits() const
f7336fa3 1699{
1700 //
1701 // Writes out the TRD-digits and the dictionaries
1702 //
1703
4d18a639 1704 // Write parameters
bdbb05bb 1705 fRunLoader->CdGAFile();
bdbb05bb 1706
da581aea 1707 // Store the digits and the dictionary in the tree
abaf1f1d 1708 return fDigitsManager->WriteDigits();
f7336fa3 1709
1710}
793ff80c 1711
8e64dd77 1712//_____________________________________________________________________________
88cb7938 1713void AliTRDdigitizer::InitOutput(Int_t iEvent)
8e64dd77 1714{
1715 //
1716 // Initializes the output branches
1717 //
1718
1719 fEvent = iEvent;
88cb7938 1720
9afbd7de 1721 if (!fRunLoader) {
1722 AliError("Run Loader is NULL");
1723 return;
1724 }
1725
4329977a 1726 AliLoader *loader = fRunLoader->GetLoader("TRDLoader");
9afbd7de 1727 if (!loader) {
1728 AliError("Can not get TRD loader from Run Loader");
1729 return;
1730 }
88cb7938 1731
4d18a639 1732 TTree *tree = 0;
88cb7938 1733
9afbd7de 1734 if (fSDigits) {
1735 // If we produce SDigits
88cb7938 1736 tree = loader->TreeS();
9afbd7de 1737 if (!tree) {
88cb7938 1738 loader->MakeTree("S");
1739 tree = loader->TreeS();
9afbd7de 1740 }
1741 }
1742 else {
1743 // If we produce Digits
1744 tree = loader->TreeD();
1745 if (!tree) {
1746 loader->MakeTree("D");
1747 tree = loader->TreeD();
1748 }
1749 }
1750
88cb7938 1751 fDigitsManager->SetEvent(iEvent);
1752 fDigitsManager->MakeBranch(tree);
8e64dd77 1753
1754}
3551db50 1755
1756//_____________________________________________________________________________
1757Double_t AliTRDdigitizer::TimeStruct(Float_t vdrift, Double_t dist, Double_t z)
1758{
1759 //
1760 // Applies the time structure of the drift cells (by C.Lippmann).
1761 // The drift time of electrons to the anode wires depends on the
1762 // distance to the wire (z) and on the position in the drift region.
1763 //
1764 // input :
1765 // dist = radial distance from (cathode) pad plane [cm]
1766 // z = distance from anode wire (parallel to cathode planes) [cm]
1767 //
1768 // output :
1769 // tdrift = the drift time of an electron at the given position
1770 //
1771 // We interpolate between the drift time values at the two drift
1772 // velocities fVDlo and fVDhi, being smaller and larger than
1773 // fDriftVelocity. We use the two stored drift time maps fTimeStruct1
1774 // and fTimeStruct2, calculated for the two mentioned drift velocities.
1775 //
1776
1777 SampleTimeStruct(vdrift);
1778
4d18a639 1779 // Indices:
1780 Int_t r1 = (Int_t)(10 * dist);
9afbd7de 1781 if (r1 < 0) r1 = 0;
1782 if (r1 > 37) r1 = 37;
1783 Int_t r2 = r1 + 1;
1784 if (r2 < 0) r2 = 0;
1785 if (r2 > 37) r2 = 37;
1786 const Int_t kz1 = ((Int_t)(100 * z / 2.5));
1787 const Int_t kz2 = kz1 + 1;
1788
4d18a639 1789 if ((r1 < 0) ||
1790 (r1 > 37) ||
1791 (kz1 < 0) ||
1792 (kz1 > 10)) {
7925de54 1793 AliWarning(Form("Indices out of range: dist=%.2f, z=%.2f, r1=%d, kz1=%d"
9afbd7de 1794 ,dist,z,r1,kz1));
3551db50 1795 }
1796
4d18a639 1797 const Float_t ky111 = fTimeStruct1[r1+38*kz1];
9afbd7de 1798 const Float_t ky221 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1799 ? fTimeStruct1[r2+38*kz2]
1800 : fTimeStruct1[37+38*10];
9afbd7de 1801 const Float_t ky121 = (kz2 <= 10)
4d18a639 1802 ? fTimeStruct1[r1+38*kz2]
1803 : fTimeStruct1[r1+38*10];
9afbd7de 1804 const Float_t ky211 = (r2 <= 37)
4d18a639 1805 ? fTimeStruct1[r2+38*kz1]
1806 : fTimeStruct1[37+38*kz1];
3551db50 1807
1808 // 2D Interpolation, lower drift time map
1809 const Float_t ky11 = (ky211-ky111)*10*dist + ky111 - (ky211-ky111)*r1;
1810 const Float_t ky21 = (ky221-ky121)*10*dist + ky121 - (ky221-ky121)*r1;
1811
4d18a639 1812 const Float_t ky112 = fTimeStruct2[r1+38*kz1];
9afbd7de 1813 const Float_t ky222 = ((r2 <= 37) && (kz2 <= 10))
4d18a639 1814 ? fTimeStruct2[r2+38*kz2]
1815 : fTimeStruct2[37+38*10];
9afbd7de 1816 const Float_t ky122 = (kz2 <= 10)
4d18a639 1817 ? fTimeStruct2[r1+38*kz2]
1818 : fTimeStruct2[r1+38*10];
9afbd7de 1819 const Float_t ky212 = (r2 <= 37)
4d18a639 1820 ? fTimeStruct2[r2+38*kz1]
1821 : fTimeStruct2[37+38*kz1];
3551db50 1822
1823 // 2D Interpolation, larger drift time map
1824 const Float_t ky12 = (ky212-ky112)*10*dist + ky112 - (ky212-ky112)*r1;
1825 const Float_t ky22 = (ky222-ky122)*10*dist + ky122 - (ky222-ky122)*r1;
1826
4d18a639 1827 // Dist now is the drift distance to the anode wires (negative if electrons are
3551db50 1828 // between anode wire plane and cathode pad plane)
9afbd7de 1829 dist -= AliTRDgeometry::AmThick() / 2.0;
3551db50 1830
1831 // Get the drift times for the drift velocities fVDlo and fVDhi
9afbd7de 1832 const Float_t ktdrift1 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1833 ? (ky21 - ky11) * 100 * z / 2.5 + ky11 - (ky21 - ky11) * kz1
1834 : 0.0;
1835 const Float_t ktdrift2 = ((TMath::Abs(dist) > 0.005) || (z > 0.005))
1836 ? (ky22 - ky12) * 100 * z / 2.5 + ky12 - (ky22 - ky12) * kz1
1837 : 0.0;
3551db50 1838
1839 // 1D Interpolation between the values at fVDlo and fVDhi
4d18a639 1840 Float_t a = (ktdrift2 - ktdrift1)
1841 / (fVDhi - fVDlo);
1842 Float_t b = ktdrift2 - a * fVDhi;
3551db50 1843
3551db50 1844 return a * vdrift + b;
1845
1846}
1847
1848//_____________________________________________________________________________
1849void AliTRDdigitizer::SampleTimeStruct(Float_t vdrift)
1850{
1851 //
1852 // Samples the timing structure of a drift cell
1853 // Drift Time data calculated with Garfield (by C.Lippmann)
1854 //
1855
4329977a 1856 // Nothing to do
4d18a639 1857 if (vdrift == fTimeLastVdrift) {
3551db50 1858 return;
9afbd7de 1859 }
4d18a639 1860 fTimeLastVdrift = vdrift;
3551db50 1861
9afbd7de 1862 // Drift time maps are saved for some drift velocity values (in drift region):
3551db50 1863 Float_t fVDsmp[8];
1864 fVDsmp[0] = 1.032;
1865 fVDsmp[1] = 1.158;
1866 fVDsmp[2] = 1.299;
1867 fVDsmp[3] = 1.450;
1868 fVDsmp[4] = 1.610;
1869 fVDsmp[5] = 1.783;
1870 fVDsmp[6] = 1.959;
1871 fVDsmp[7] = 2.134;
1872
9afbd7de 1873 if (vdrift < fVDsmp[0]) {
7925de54 1874 AliWarning(Form("Drift Velocity too small (%.3f<%.3f)",vdrift,fVDsmp[0]));
3551db50 1875 vdrift = fVDsmp[0];
9afbd7de 1876 }
1877 else if (vdrift > fVDsmp[7]) {
7925de54 1878 AliWarning(Form("Drift Velocity too large (%.3f>%.3f)",vdrift,fVDsmp[6]));
3551db50 1879 vdrift = fVDsmp[7];
1880 }
1881
1882 const Int_t ktimebin = 38;
9afbd7de 1883 const Int_t kZbin = 11;
3551db50 1884
1885 // Garfield simulation at UD = -1500V; vd = 1.032cm/microsec, <driftfield> = 525V/cm
1886 Float_t time1500[ktimebin][kZbin] =
1887 {{0.09170, 0.09205, 0.09306, 0.09475, 0.09716, 0.10035,
1888 0.10445, 0.10993, 0.11838, 0.13986, 0.37858},
1889 {0.06588, 0.06626, 0.06739, 0.06926, 0.07186, 0.07524,
1890 0.07951, 0.08515, 0.09381, 0.11601, 0.35673},
1891 {0.03946, 0.04003, 0.04171, 0.04435, 0.04780, 0.05193,
1892 0.05680, 0.06306, 0.07290, 0.09873, 0.34748},
1893 {0.01151, 0.01283, 0.01718, 0.02282, 0.02880, 0.03479,
1894 0.04098, 0.04910, 0.06413, 0.10567, 0.36897},
1895 {0.01116, 0.01290, 0.01721, 0.02299, 0.02863, 0.03447,
1896 0.04074, 0.04984, 0.06839, 0.11625, 0.37277},
1897 {0.03919, 0.03974, 0.04131, 0.04380, 0.04703, 0.05102,
1898 0.05602, 0.06309, 0.07651, 0.10938, 0.36838},
1899 {0.06493, 0.06560, 0.06640, 0.06802, 0.07051, 0.07392,
1900 0.07853, 0.08510, 0.09690, 0.12621, 0.38058},
1901 {0.09174, 0.09186, 0.09225, 0.09303, 0.09477, 0.00000,
1902 0.11205, 0.11952, 0.13461, 0.16984, 0.43017},
1903 {0.14356, 0.14494, 0.14959, 0.16002, 0.18328, 0.27981,
1904 0.22785, 0.21240, 0.21948, 0.25965, 0.52392},
1905 {0.23120, 0.23366, 0.24046, 0.25422, 0.28071, 0.36914,
1906 0.32999, 0.31208, 0.31772, 0.35804, 0.62249},
1907 {0.32686, 0.32916, 0.33646, 0.35053, 0.37710, 0.46292,
1908 0.42773, 0.40948, 0.41497, 0.45527, 0.71955},
1909 {0.42353, 0.42583, 0.43317, 0.44727, 0.47380, 0.55884,
1910 0.52479, 0.50650, 0.51194, 0.55225, 0.81658},
1911 {0.52038, 0.52271, 0.53000, 0.54415, 0.57064, 0.65545,
1912 0.62172, 0.60341, 0.60885, 0.64915, 0.91339},
1913 {0.61724, 0.61953, 0.62694, 0.64098, 0.66756, 0.75226,
1914 0.71862, 0.70030, 0.70575, 0.74604, 1.01035},
1915 {0.71460, 0.71678, 0.72376, 0.73786, 0.76447, 0.84913,
1916 0.81551, 0.79720, 0.80264, 0.84292, 1.10723},
1917 {0.81101, 0.81334, 0.82066, 0.83475, 0.86127, 0.94599,
1918 0.91240, 0.89408, 0.89952, 0.93981, 1.20409},
1919 {0.90788, 0.91023, 0.91752, 0.93163, 0.95815, 1.04293,
1920 1.00929, 0.99096, 0.99640, 1.03669, 1.30106},
1921 {1.00477, 1.00707, 1.01449, 1.02852, 1.05504, 1.13976,
1922 1.10617, 1.08784, 1.09329, 1.13358, 1.39796},
1923 {1.10166, 1.10397, 1.11130, 1.12541, 1.15257, 1.23672,
1924 1.20307, 1.18472, 1.19018, 1.23046, 1.49486},
1925 {1.19854, 1.20084, 1.20818, 1.22235, 1.24885, 1.33355,
1926 1.29992, 1.28156, 1.28707, 1.32735, 1.59177},
1927 {1.29544, 1.29780, 1.30507, 1.31917, 1.34575, 1.43073,
1928 1.39681, 1.37851, 1.38396, 1.42377, 1.68854},
1929 {1.39236, 1.39462, 1.40205, 1.41607, 1.44259, 1.52745,
1930 1.49368, 1.47541, 1.48083, 1.52112, 1.78546},
1931 {1.49314, 1.49149, 1.49885, 1.51297, 1.53949, 1.62420,
1932 1.59016, 1.57231, 1.57772, 1.61800, 1.88048},
1933 {1.58610, 1.58839, 1.59572, 1.60983, 1.63635, 1.72109,
1934 1.68651, 1.66921, 1.67463, 1.71489, 1.97918},
1935 {1.68400, 1.68529, 1.69261, 1.70671, 1.73331, 1.81830,
1936 1.78341, 1.76605, 1.77150, 1.81179, 2.07608},
1937 {1.77991, 1.78215, 1.78952, 1.80385, 1.83014, 1.91486,
1938 1.88128, 1.86215, 1.86837, 1.90865, 2.17304},
1939 {1.87674, 1.87904, 1.88647, 1.90052, 1.92712, 2.01173,
1940 1.97812, 1.95905, 1.96527, 2.00710, 2.26979},
1941 {1.97369, 1.97594, 1.98326, 1.99869, 2.02442, 2.10865,
1942 2.07501, 2.05666, 2.06214, 2.10243, 2.36669},
1943 {2.07052, 2.07281, 2.08016, 2.09425, 2.12132, 2.20555,
1944 2.17182, 2.15341, 2.15904, 2.19933, 2.46363},
1945 {2.16742, 2.16971, 2.17707, 2.19114, 2.21766, 2.30240,
1946 2.26877, 2.25015, 2.25573, 2.29586, 2.56060},
1947 {2.26423, 2.26659, 2.27396, 2.28803, 2.31456, 2.40828,
1948 2.36567, 2.34705, 2.35282, 2.39765, 2.65744},
1949 {2.36153, 2.36349, 2.37330, 2.38501, 2.41159, 2.49940,
1950 2.46257, 2.44420, 2.44843, 2.48987, 2.75431},
1951 {2.46558, 2.46035, 2.46822, 2.48181, 2.50849, 2.59630,
1952 2.55947, 2.54112, 2.54513, 2.58677, 2.85094},
1953 {2.56248, 2.55723, 2.56486, 2.57871, 2.60520, 2.68998,
1954 2.65626, 2.63790, 2.64316, 2.68360, 2.94813},
1955 {2.65178, 2.65441, 2.66153, 2.67556, 2.70210, 2.78687,
1956 2.75319, 2.73463, 2.74032, 2.78060, 3.04503},
1957 {2.74868, 2.75131, 2.75870, 2.77245, 2.79385, 2.88700,
1958 2.85009, 2.83177, 2.83723, 2.87750, 3.14193},
1959 {2.84574, 2.84789, 2.85560, 2.86935, 2.89075, 2.98060,
1960 2.94576, 2.92868, 2.93356, 2.97436, 3.23868},
1961 {2.94239, 2.94469, 2.95221, 2.96625, 2.99345, 3.07747,
1962 3.04266, 3.02545, 3.03051, 3.07118, 3.33555}};
1963
1964 // Garfield simulation at UD = -1600V; vd = 1.158cm/microsec, <driftfield> = 558V/cm
1965 Float_t time1600[ktimebin][kZbin] =
1966 {{0.09169, 0.09203, 0.09305, 0.09473, 0.09714, 0.10032,
1967 0.10441, 0.10990, 0.11835, 0.13986, 0.37845},
1968 {0.06589, 0.06626, 0.06738, 0.06924, 0.07184, 0.07521,
1969 0.07947, 0.08512, 0.09379, 0.11603, 0.35648},
1970 {0.03947, 0.04003, 0.04171, 0.04434, 0.04778, 0.05190,
1971 0.05678, 0.06304, 0.07292, 0.09876, 0.34759},
1972 {0.01111, 0.01281, 0.01718, 0.02281, 0.02879, 0.03477,
1973 0.04097, 0.04910, 0.06415, 0.10573, 0.36896},
1974 {0.01120, 0.01311, 0.01721, 0.02279, 0.02862, 0.03446,
1975 0.04074, 0.04981, 0.06825, 0.11595, 0.37255},
1976 {0.03919, 0.03980, 0.04132, 0.04380, 0.04704, 0.05102,
1977 0.05602, 0.06302, 0.07633, 0.10896, 0.36743},
1978 {0.06531, 0.06528, 0.06631, 0.06805, 0.07053, 0.07392,
1979 0.07853, 0.08505, 0.09669, 0.12578, 0.37967},
1980 {0.09157, 0.09171, 0.09216, 0.09301, 0.09475, 0.00000,
1981 0.11152, 0.11879, 0.13352, 0.16802, 0.42750},
1982 {0.13977, 0.14095, 0.14509, 0.15433, 0.17534, 0.26406,
1983 0.21660, 0.20345, 0.21113, 0.25067, 0.51434},
1984 {0.21816, 0.22041, 0.22631, 0.23850, 0.26208, 0.34340,
1985 0.30755, 0.29237, 0.29878, 0.33863, 0.60258},
1986 {0.30344, 0.30547, 0.31241, 0.32444, 0.34809, 0.42696,
1987 0.39464, 0.37919, 0.38546, 0.42530, 0.68926},
1988 {0.38969, 0.39164, 0.39810, 0.41059, 0.43441, 0.51246,
1989 0.48112, 0.46562, 0.47191, 0.51172, 0.77558},
1990 {0.47592, 0.47799, 0.48442, 0.49689, 0.52061, 0.59855,
1991 0.56752, 0.55201, 0.55826, 0.59808, 0.86202},
1992 {0.56226, 0.56428, 0.57074, 0.58324, 0.60696, 0.68483,
1993 0.65388, 0.63837, 0.64461, 0.68445, 0.94830},
1994 {0.64881, 0.65063, 0.65709, 0.66958, 0.69331, 0.77117,
1995 0.74023, 0.72472, 0.73098, 0.77079, 1.03486},
1996 {0.73506, 0.73698, 0.74344, 0.75596, 0.77964, 0.85751,
1997 0.82658, 0.81107, 0.81731, 0.85712, 1.12106},
1998 {0.82132, 0.82333, 0.82979, 0.84228, 0.86608, 0.94386,
1999 0.91293, 0.89742, 0.90367, 0.94335, 1.20737},
2000 {0.90767, 0.90968, 0.91614, 0.92863, 0.95236, 1.03021,
2001 0.99928, 0.98377, 0.99001, 1.02984, 1.29371},
2002 {0.99410, 0.99602, 1.00257, 1.01498, 1.03869, 1.11720,
2003 1.08563, 1.07011, 1.07637, 1.11621, 1.37873},
2004 {1.08036, 1.08240, 1.08884, 1.10138, 1.12504, 1.20301,
2005 1.17198, 1.15647, 1.16272, 1.20255, 1.46651},
2006 {1.16670, 1.16872, 1.17525, 1.18783, 1.21139, 1.28934,
2007 1.25833, 1.24281, 1.24909, 1.28889, 1.55275},
2008 {1.25307, 1.25510, 1.26153, 1.27404, 1.29773, 1.37584,
2009 1.34469, 1.32916, 1.33536, 1.37524, 1.63915},
2010 {1.33942, 1.34146, 1.34788, 1.36040, 1.38410, 1.46438,
2011 1.43105, 1.41537, 1.42176, 1.46158, 1.72538},
2012 {1.42579, 1.42782, 1.43458, 1.44674, 1.47043, 1.55085,
2013 1.51675, 1.50168, 1.50810, 1.54793, 1.81174},
2014 {1.51207, 1.51454, 1.52060, 1.53307, 1.55684, 1.63478,
2015 1.60336, 1.58820, 1.59446, 1.63414, 1.89814},
2016 {1.59856, 1.60047, 1.60693, 1.61942, 1.64317, 1.72257,
2017 1.69008, 1.67454, 1.68080, 1.72063, 1.98433},
2018 {1.68481, 1.68682, 1.69330, 1.70584, 1.72949, 1.80752,
2019 1.77643, 1.76089, 1.76716, 1.80692, 2.07069},
2020 {1.77117, 1.77319, 1.77969, 1.79260, 1.81583, 1.89376,
2021 1.86226, 1.84720, 1.85355, 1.89256, 2.15343},
2022 {1.85748, 1.85967, 1.86605, 1.87848, 1.90222, 1.98010,
2023 1.94913, 1.93271, 1.93981, 1.97968, 2.24355},
2024 {1.94386, 1.94587, 1.95233, 1.96484, 1.98854, 2.06646,
2025 2.03542, 2.01755, 2.02617, 2.06604, 2.32993},
2026 {2.03022, 2.03230, 2.03868, 2.05134, 2.07488, 2.15367,
2027 2.12178, 2.10391, 2.11252, 2.15432, 2.41623},
2028 {2.11656, 2.11857, 2.12505, 2.13772, 2.16147, 2.23919,
2029 2.20817, 2.19265, 2.20744, 2.23872, 2.49996},
2030 {2.20291, 2.20611, 2.21137, 2.22387, 2.24758, 2.32563,
2031 2.29450, 2.27901, 2.28525, 2.32507, 2.58897},
2032 {2.28922, 2.29172, 2.29774, 2.31345, 2.33400, 2.41287,
2033 2.38086, 2.36535, 2.37160, 2.40869, 2.67113},
2034 {2.37572, 2.37764, 2.38410, 2.39803, 2.42046, 2.49817,
2035 2.46721, 2.45171, 2.45794, 2.49505, 2.76061},
2036 {2.46190, 2.46396, 2.47043, 2.48340, 2.50665, 2.58453,
2037 2.55357, 2.53728, 2.54430, 2.58407, 2.84816},
2038 {2.54833, 2.55032, 2.55679, 2.56976, 2.59312, 2.67103,
2039 2.63993, 2.62364, 2.63062, 2.67040, 2.93444},
2040 {2.63456, 2.63660, 2.64304, 2.65555, 2.67938, 2.75739,
2041 2.72629, 2.71064, 2.71688, 2.75671, 3.01886}};
2042
2043 // Garfield simulation at UD = -1700V; vd = 1.299cm/microsec, <driftfield> = 590V/cm
2044 Float_t time1700[ktimebin][kZbin] =
2045 {{0.09167, 0.09201, 0.09302, 0.09471, 0.09712, 0.10029,
2046 0.10438, 0.10986, 0.11832, 0.13986, 0.37824},
2047 {0.06591, 0.06626, 0.06736, 0.06923, 0.07183, 0.07519,
2048 0.07944, 0.08511, 0.09378, 0.11603, 0.35625},
2049 {0.03946, 0.04003, 0.04170, 0.04433, 0.04777, 0.05189,
2050 0.05676, 0.06301, 0.07291, 0.09880, 0.34724},
2051 {0.01110, 0.01281, 0.01718, 0.02280, 0.02879, 0.03476,
2052 0.04096, 0.04910, 0.06417, 0.10582, 0.36861},
2053 {0.01115, 0.01294, 0.01721, 0.02276, 0.02862, 0.03447,
2054 0.04074, 0.04980, 0.06812, 0.11565, 0.37231},
2055 {0.03920, 0.03974, 0.04133, 0.04381, 0.04706, 0.05105,
2056 0.05603, 0.06299, 0.07618, 0.10860, 0.36646},
2057 {0.06498, 0.06529, 0.06634, 0.06808, 0.07055, 0.07395,
2058 0.07852, 0.08500, 0.09650, 0.12532, 0.37850},
2059 {0.09143, 0.09159, 0.09207, 0.09297, 0.09473, 0.00000,
2060 0.11102, 0.11809, 0.13245, 0.16627, 0.42496},
2061 {0.13646, 0.13750, 0.14112, 0.14926, 0.16806, 0.24960,
2062 0.20627, 0.19536, 0.20366, 0.24256, 0.50557},
2063 {0.20678, 0.20848, 0.21384, 0.22450, 0.24552, 0.32018,
2064 0.28740, 0.27477, 0.28196, 0.32128, 0.58475},
2065 {0.28287, 0.28461, 0.29020, 0.30108, 0.32224, 0.39467,
2066 0.36500, 0.35217, 0.35926, 0.39860, 0.66194},
2067 {0.35972, 0.36145, 0.36713, 0.37797, 0.39912, 0.47091,
2068 0.44212, 0.42925, 0.43632, 0.47563, 0.73892},
2069 {0.43667, 0.43841, 0.44413, 0.45494, 0.47607, 0.54780,
2070 0.51912, 0.50627, 0.51334, 0.55254, 0.81595},
2071 {0.51365, 0.51540, 0.52101, 0.53193, 0.55305, 0.62463,
2072 0.59617, 0.58328, 0.59035, 0.62965, 0.89303},
2073 {0.59064, 0.59240, 0.59801, 0.60893, 0.63009, 0.70169,
2074 0.67317, 0.66028, 0.66735, 0.70666, 0.96995},
2075 {0.66765, 0.66939, 0.67501, 0.68592, 0.70724, 0.77863,
2076 0.75016, 0.73728, 0.74435, 0.78366, 1.04696},
2077 {0.74464, 0.74636, 0.75200, 0.76293, 0.78405, 0.85561,
2078 0.82716, 0.81427, 0.82133, 0.86064, 1.12396},
2079 {0.82165, 0.82340, 0.82902, 0.83991, 0.86104, 0.93266,
2080 0.90414, 0.89128, 0.89834, 0.93763, 1.20100},
2081 {0.89863, 0.90042, 0.90659, 0.91705, 0.93805, 1.00960,
2082 0.98115, 0.96825, 0.97533, 1.01462, 1.27801},
2083 {0.97563, 0.97740, 0.98310, 0.99391, 1.01504, 1.08659,
2084 1.05814, 1.04526, 1.05233, 1.09163, 1.35503},
2085 {1.05276, 1.05451, 1.06002, 1.07090, 1.09099, 1.16357,
2086 1.13516, 1.12225, 1.12933, 1.16863, 1.43195},
2087 {1.12977, 1.13138, 1.13700, 1.14792, 1.16797, 1.24061,
2088 1.21212, 1.19926, 1.20626, 1.24554, 1.50900},
2089 {1.20664, 1.20839, 1.21400, 1.22490, 1.24606, 1.31772,
2090 1.28914, 1.27382, 1.28329, 1.32262, 1.58550},
2091 {1.28367, 1.28541, 1.29099, 1.30189, 1.32312, 1.39460,
2092 1.36612, 1.34924, 1.36030, 1.39961, 1.66310},
2093 {1.36064, 1.36249, 1.36799, 1.37896, 1.40004, 1.48030,
2094 1.44314, 1.43032, 1.43731, 1.47659, 1.73442},
2095 {1.43762, 1.43937, 1.44497, 1.45618, 1.47704, 1.54932,
2096 1.52012, 1.50725, 1.51430, 1.55357, 1.81708},
2097 {1.51462, 1.51937, 1.52203, 1.53316, 1.55403, 1.62572,
2098 1.59713, 1.58424, 1.59128, 1.63061, 1.89406},
2099 {1.59162, 1.59338, 1.59947, 1.60989, 1.63103, 1.70270,
2100 1.67411, 1.66124, 1.66799, 1.70759, 1.97103},
2101 {1.66874, 1.67037, 1.67597, 1.68687, 1.70814, 1.77969,
2102 1.75112, 1.73806, 1.74530, 1.78457, 2.04794},
2103 {1.74693, 1.74749, 1.75297, 1.76476, 1.78500, 1.85667,
2104 1.82811, 1.81504, 1.82101, 1.86161, 2.12492},
2105 {1.82260, 1.82437, 1.82995, 1.84174, 1.86202, 1.93372,
2106 1.90509, 1.89202, 1.89930, 1.93859, 2.20189},
2107 {1.89964, 1.90135, 1.90693, 1.91789, 1.93952, 2.01080,
2108 1.98207, 1.96921, 1.97628, 2.01384, 2.27887},
2109 {1.97662, 1.97917, 1.98611, 1.99487, 2.01601, 2.08778,
2110 2.05846, 2.04623, 2.05330, 2.09244, 2.35585},
2111 {2.05359, 2.05615, 2.06309, 2.07187, 2.09867, 2.16459,
2112 2.13610, 2.12322, 2.13029, 2.16942, 2.43199},
2113 {2.13063, 2.13233, 2.13795, 2.14886, 2.17008, 2.24199,
2114 2.21310, 2.20020, 2.20727, 2.24659, 2.50983},
2115 {2.20761, 2.20931, 2.21955, 2.22624, 2.24708, 2.32147,
2116 2.29009, 2.27725, 2.28276, 2.32359, 2.58680},
2117 {2.28459, 2.29108, 2.29202, 2.30286, 2.32007, 2.39559,
2118 2.36683, 2.35422, 2.36119, 2.40058, 2.66081},
2119 {2.36153, 2.36806, 2.36889, 2.37985, 2.40092, 2.47828,
2120 2.44381, 2.43099, 2.43819, 2.47750, 2.73779}};
2121
2122 // Garfield simulation at UD = -1800V; vd = 1.450cm/microsec, <driftfield> = 623V/cm
2123 Float_t time1800[ktimebin][kZbin] =
2124 {{0.09166, 0.09199, 0.09300, 0.09470, 0.09709, 0.10026,
2125 0.10434, 0.10983, 0.11831, 0.13987, 0.37802},
2126 {0.06585, 0.06623, 0.06735, 0.06921, 0.07180, 0.07520,
2127 0.07941, 0.08507, 0.09376, 0.11604, 0.35624},
2128 {0.03945, 0.04004, 0.04169, 0.04432, 0.04776, 0.05187,
2129 0.05674, 0.06300, 0.07290, 0.09884, 0.34704},
2130 {0.01108, 0.01287, 0.01717, 0.02280, 0.02880, 0.03476,
2131 0.04095, 0.04909, 0.06419, 0.10589, 0.36843},
2132 {0.01115, 0.01287, 0.01720, 0.02276, 0.02862, 0.03448,
2133 0.04073, 0.04973, 0.06799, 0.11535, 0.37224},
2134 {0.03918, 0.03975, 0.04134, 0.04382, 0.04707, 0.05105,
2135 0.05603, 0.06296, 0.07605, 0.10822, 0.36560},
2136 {0.06498, 0.06532, 0.06635, 0.06809, 0.07058, 0.07395,
2137 0.07855, 0.08495, 0.09632, 0.12488, 0.37730},
2138 {0.09130, 0.09160, 0.09199, 0.09300, 0.09472, 0.00000,
2139 0.11059, 0.11747, 0.13146, 0.16462, 0.42233},
2140 {0.13364, 0.13449, 0.13767, 0.14481, 0.16147, 0.23635,
2141 0.19706, 0.18812, 0.19704, 0.23520, 0.49749},
2142 {0.19698, 0.19844, 0.20311, 0.21236, 0.23082, 0.29920,
2143 0.26936, 0.25927, 0.26732, 0.30601, 0.56871},
2144 {0.26518, 0.26670, 0.27160, 0.28099, 0.29955, 0.36597,
2145 0.33885, 0.32858, 0.33653, 0.37524, 0.63801},
2146 {0.33441, 0.33553, 0.34040, 0.34987, 0.36841, 0.43428,
2147 0.40797, 0.39763, 0.40556, 0.44425, 0.70698},
2148 {0.40296, 0.40447, 0.40934, 0.41881, 0.43737, 0.50306,
2149 0.47695, 0.46662, 0.47455, 0.51329, 0.77600},
2150 {0.47296, 0.47344, 0.47830, 0.48779, 0.50632, 0.57200,
2151 0.54593, 0.53559, 0.54351, 0.58222, 0.84489},
2152 {0.54089, 0.54264, 0.54727, 0.55673, 0.57529, 0.64094,
2153 0.61490, 0.60457, 0.61249, 0.65118, 0.91394},
2154 {0.60987, 0.61138, 0.61624, 0.62573, 0.64428, 0.70989,
2155 0.68397, 0.67354, 0.68147, 0.72015, 0.98291},
2156 {0.67883, 0.68035, 0.68521, 0.69469, 0.71324, 0.77896,
2157 0.75287, 0.74251, 0.75043, 0.78912, 1.04458},
2158 {0.74780, 0.74932, 0.75421, 0.76367, 0.78221, 0.84785,
2159 0.82185, 0.81148, 0.81941, 0.85811, 1.12085},
2160 {0.81690, 0.81830, 0.82316, 0.83263, 0.85120, 0.91683,
2161 0.89077, 0.88045, 0.88837, 0.92707, 1.18976},
2162 {0.88574, 0.88726, 0.89228, 0.90198, 0.92017, 0.98578,
2163 0.95974, 0.94947, 0.95734, 0.99604, 1.25873},
2164 {0.95493, 0.95624, 0.96110, 0.97058, 0.98913, 1.05481,
2165 1.02873, 1.01839, 1.02631, 1.06503, 1.32772},
2166 {1.02392, 1.02524, 1.03008, 1.03955, 1.05810, 1.12378,
2167 1.09757, 1.08605, 1.09530, 1.13399, 1.39669},
2168 {1.09270, 1.09418, 1.09911, 1.10854, 1.12714, 1.19281,
2169 1.16502, 1.15633, 1.16427, 1.20271, 1.46574},
2170 {1.16168, 1.16323, 1.16801, 1.17772, 1.19604, 1.26190,
2171 1.23399, 1.22531, 1.23323, 1.27194, 1.53475},
2172 {1.23061, 1.23214, 1.23698, 1.24669, 1.26503, 1.33073,
2173 1.30461, 1.29428, 1.30220, 1.34091, 1.60372},
2174 {1.29960, 1.30110, 1.30596, 1.31544, 1.33398, 1.39962,
2175 1.37228, 1.36323, 1.37121, 1.40988, 1.67273},
2176 {1.36851, 1.37007, 1.37512, 1.38441, 1.40297, 1.46865,
2177 1.44256, 1.43222, 1.44017, 1.47878, 1.74155},
2178 {1.43752, 1.43904, 1.44773, 1.45338, 1.47220, 1.53759,
2179 1.51136, 1.50119, 1.50914, 1.54775, 1.81050},
2180 {1.50646, 1.50802, 1.51288, 1.52237, 1.54097, 1.60697,
2181 1.58049, 1.57018, 1.57811, 1.61678, 1.87947},
2182 {1.57545, 1.57720, 1.58185, 1.59134, 1.60996, 1.67787,
2183 1.64929, 1.63914, 1.64707, 1.68570, 1.94851},
2184 {1.64442, 1.64617, 1.65081, 1.66035, 1.67893, 1.74684,
2185 1.71826, 1.70745, 1.71604, 1.75310, 2.01748},
2186 {1.71337, 1.71513, 1.71978, 1.72932, 1.74645, 1.81346,
2187 1.78739, 1.77642, 1.78501, 1.82151, 2.08644},
2188 {1.78238, 1.78410, 1.78876, 1.79824, 1.81678, 1.88332,
2189 1.85639, 1.84262, 1.85397, 1.89270, 2.15533},
2190 {1.85135, 1.85306, 1.85778, 1.86728, 1.88580, 1.95615,
2191 1.92536, 1.91171, 1.92283, 1.96165, 2.22428},
2192 {1.92774, 1.92184, 1.92672, 1.93618, 1.95477, 2.02048,
2193 1.99427, 1.98068, 1.99192, 2.03062, 2.29338},
2194 {1.98929, 1.99081, 1.99567, 2.00515, 2.02373, 2.08987,
2195 2.06332, 2.05249, 2.05939, 2.09928, 2.36227},
2196 {2.05829, 2.05978, 2.06464, 2.07414, 2.09272, 2.15850,
2197 2.12928, 2.12194, 2.12987, 2.16825, 2.43083},
2198 {2.12726, 2.12869, 2.13360, 2.14425, 2.16160, 2.22872,
2199 2.20118, 2.19078, 2.19876, 2.23416, 2.50007}};
2200
2201 // Garfield simulation at UD = -1900V; vd = 1.610cm/microsec, <driftfield> = 655V/cm
2202 Float_t time1900[ktimebin][kZbin] =
2203 {{0.09166, 0.09198, 0.09298, 0.09467, 0.09707, 0.10023,
2204 0.10431, 0.10980, 0.11828, 0.13988, 0.37789},
2205 {0.06584, 0.06622, 0.06735, 0.06920, 0.07179, 0.07514,
2206 0.07938, 0.08505, 0.09374, 0.11606, 0.35599},
2207 {0.03945, 0.04002, 0.04169, 0.04432, 0.04775, 0.05185,
2208 0.05672, 0.06298, 0.07290, 0.09888, 0.34695},
2209 {0.01109, 0.01281, 0.01717, 0.02279, 0.02878, 0.03476,
2210 0.04094, 0.04909, 0.06421, 0.10597, 0.36823},
2211 {0.01115, 0.01287, 0.01720, 0.02294, 0.02862, 0.03448,
2212 0.04074, 0.04973, 0.06783, 0.11506, 0.37206},
2213 {0.03940, 0.03975, 0.04135, 0.04386, 0.04708, 0.05106,
2214 0.05604, 0.06293, 0.07592, 0.10787, 0.36484},
2215 {0.06500, 0.06534, 0.06638, 0.06811, 0.07060, 0.07413,
2216 0.07852, 0.08491, 0.09614, 0.12446, 0.37626},
2217 {0.09119, 0.09140, 0.09194, 0.09293, 0.09471, 0.00000,
2218 0.11013, 0.11685, 0.13050, 0.16302, 0.41991},
2219 {0.13111, 0.13190, 0.13466, 0.14091, 0.15554, 0.22409,
2220 0.18846, 0.18167, 0.19113, 0.22854, 0.48995},
2221 {0.18849, 0.18975, 0.19380, 0.20185, 0.21797, 0.28050,
2222 0.25368, 0.24575, 0.25446, 0.29249, 0.55442},
2223 {0.24995, 0.25125, 0.25563, 0.26366, 0.27986, 0.34065,
2224 0.31605, 0.30815, 0.31680, 0.35482, 0.61697},
2225 {0.31187, 0.31324, 0.31745, 0.32580, 0.34205, 0.40217,
2226 0.37825, 0.37031, 0.37897, 0.41696, 0.67890},
2227 {0.37401, 0.37531, 0.37955, 0.38777, 0.40395, 0.46408,
2228 0.44037, 0.43242, 0.44108, 0.47906, 0.74122},
2229 {0.43610, 0.43741, 0.44161, 0.44986, 0.46604, 0.52614,
2230 0.50248, 0.49452, 0.50316, 0.54116, 0.80326},
2231 {0.49820, 0.49988, 0.50372, 0.51196, 0.52814, 0.58822,
2232 0.56459, 0.55661, 0.56527, 0.60326, 0.86526},
2233 {0.56032, 0.56161, 0.56582, 0.57408, 0.59024, 0.65032,
2234 0.62670, 0.61872, 0.62737, 0.66537, 0.92749},
2235 {0.62240, 0.62371, 0.62792, 0.63624, 0.65236, 0.71241,
2236 0.68881, 0.68081, 0.68947, 0.72750, 0.98941},
2237 {0.68449, 0.68581, 0.69002, 0.69828, 0.71444, 0.77452,
2238 0.75089, 0.74295, 0.75157, 0.78957, 1.05157},
2239 {0.74660, 0.74790, 0.75212, 0.76036, 0.77654, 0.83748,
2240 0.81299, 0.80501, 0.81193, 0.85168, 1.11375},
2241 {0.80870, 0.81017, 0.81423, 0.82246, 0.83867, 0.89908,
2242 0.87509, 0.86660, 0.87577, 0.91376, 1.17586},
2243 {0.87080, 0.87233, 0.87632, 0.88458, 0.90074, 0.96083,
2244 0.93718, 0.92922, 0.93787, 0.97588, 1.23794},
2245 {0.93291, 0.93422, 0.93844, 0.94667, 0.96293, 1.02295,
2246 0.99929, 0.99127, 0.99997, 1.03797, 1.29995},
2247 {0.99500, 0.99645, 1.00308, 1.00877, 1.02497, 1.08504,
2248 1.06140, 1.05343, 1.06203, 1.10006, 1.36216},
2249 {1.05712, 1.05926, 1.06262, 1.07092, 1.08706, 1.14754,
2250 1.12350, 1.11550, 1.12417, 1.16218, 1.42427},
2251 {1.11921, 1.12059, 1.12473, 1.13297, 1.14916, 1.21140,
2252 1.18560, 1.17284, 1.18625, 1.22414, 1.48629},
2253 {1.18140, 1.18262, 1.18690, 1.19508, 1.21125, 1.27139,
2254 1.24164, 1.23495, 1.24838, 1.28634, 1.54852},
2255 {1.24340, 1.24473, 1.24901, 1.25732, 1.27336, 1.33358,
2256 1.30793, 1.30179, 1.31047, 1.34848, 1.61066},
2257 {1.30551, 1.30684, 1.31104, 1.32056, 1.33553, 1.39609,
2258 1.37004, 1.36392, 1.37045, 1.41057, 1.67259},
2259 {1.36755, 1.36892, 1.37315, 1.39148, 1.39755, 1.45820,
2260 1.43215, 1.42602, 1.43467, 1.47268, 1.73477},
2261 {1.42966, 1.43101, 1.43549, 1.45359, 1.45976, 1.52031,
2262 1.49601, 1.48811, 1.49677, 1.53477, 1.79691},
2263 {1.49180, 1.49321, 1.49760, 1.51570, 1.52175, 1.58185,
2264 1.55771, 1.55023, 1.55888, 1.59672, 1.85501},
2265 {1.55391, 1.55527, 1.55943, 1.57782, 1.58391, 1.64395,
2266 1.62008, 1.61233, 1.62085, 1.65883, 1.92091},
2267 {1.61599, 1.61732, 1.62154, 1.63993, 1.64612, 1.70608,
2268 1.68237, 1.67108, 1.68301, 1.72110, 1.97931},
2269 {1.67808, 1.67948, 1.68364, 1.70204, 1.70823, 1.76858,
2270 1.74404, 1.73539, 1.74512, 1.78321, 2.04522},
2271 {1.74019, 1.74152, 1.74573, 1.76415, 1.77015, 1.83040,
2272 1.80615, 1.79366, 1.80723, 1.84509, 2.10742},
2273 {1.80235, 1.80362, 1.80783, 1.82626, 1.83227, 1.89246,
2274 1.86795, 1.85405, 1.86938, 1.90720, 2.16953},
2275 {1.86442, 1.86572, 1.86994, 1.88837, 1.89438, 1.95445,
2276 1.93006, 1.92283, 1.93148, 1.96931, 2.23147},
2277 {1.92700, 1.92783, 1.93197, 1.95049, 1.95649, 2.01668,
2278 1.99217, 1.98486, 1.99352, 2.03143, 2.29358}};
2279
2280 // Garfield simulation at UD = -2000V; vd = 1.783cm/microsec, <driftfield> = 688V/cm
2281 Float_t time2000[ktimebin][kZbin] =
2282 {{0.09176, 0.09196, 0.09296, 0.09465, 0.09704, 0.10020,
2283 0.10427, 0.10977, 0.11825, 0.13988, 0.37774},
2284 {0.06583, 0.06620, 0.06735, 0.06918, 0.07177, 0.07513,
2285 0.07936, 0.08503, 0.09372, 0.11606, 0.35586},
2286 {0.03944, 0.04001, 0.04170, 0.04431, 0.04774, 0.05184,
2287 0.05670, 0.06296, 0.07291, 0.09893, 0.34680},
2288 {0.01108, 0.01281, 0.01719, 0.02279, 0.02879, 0.03474,
2289 0.04093, 0.04908, 0.06422, 0.10605, 0.36800},
2290 {0.01114, 0.01287, 0.01720, 0.02276, 0.02863, 0.03449,
2291 0.04073, 0.04970, 0.06774, 0.11478, 0.37179},
2292 {0.03925, 0.03977, 0.04135, 0.04386, 0.04711, 0.05108,
2293 0.05604, 0.06290, 0.07580, 0.10748, 0.36386},
2294 {0.06501, 0.06536, 0.06640, 0.06814, 0.07062, 0.07398,
2295 0.07852, 0.08487, 0.09598, 0.12405, 0.37519},
2296 {0.09109, 0.09127, 0.09188, 0.09292, 0.09472, 0.00000,
2297 0.10964, 0.11630, 0.12960, 0.16150, 0.41765},
2298 {0.12898, 0.12968, 0.13209, 0.13749, 0.15034, 0.21286,
2299 0.18088, 0.17590, 0.18591, 0.22254, 0.48315},
2300 {0.18122, 0.18227, 0.18574, 0.19263, 0.20674, 0.26376,
2301 0.23960, 0.23375, 0.24316, 0.28047, 0.54179},
2302 {0.23674, 0.23784, 0.24142, 0.24847, 0.26264, 0.31810,
2303 0.29602, 0.29008, 0.29944, 0.33675, 0.59795},
2304 {0.29279, 0.29382, 0.29742, 0.30448, 0.31865, 0.37364,
2305 0.35215, 0.34629, 0.35555, 0.39286, 0.65411},
2306 {0.34875, 0.34987, 0.35346, 0.36054, 0.37472, 0.42956,
2307 0.40825, 0.40229, 0.41167, 0.44894, 0.71033},
2308 {0.40484, 0.40594, 0.40954, 0.41660, 0.43077, 0.48560,
2309 0.46433, 0.45840, 0.46772, 0.50500, 0.76632},
2310 {0.46090, 0.46201, 0.46560, 0.47267, 0.48684, 0.54167,
2311 0.52041, 0.51449, 0.52382, 0.56108, 0.82227},
2312 {0.51698, 0.51809, 0.52173, 0.52874, 0.54291, 0.59776,
2313 0.57646, 0.57052, 0.57986, 0.61717, 0.87836},
2314 {0.57306, 0.57418, 0.57782, 0.58513, 0.59899, 0.65380,
2315 0.63255, 0.62661, 0.63594, 0.67325, 0.93460},
2316 {0.62912, 0.63024, 0.63383, 0.64103, 0.65506, 0.70988,
2317 0.68484, 0.68267, 0.69202, 0.72878, 0.99046},
2318 {0.68521, 0.68633, 0.68990, 0.69699, 0.71115, 0.76595,
2319 0.74468, 0.73872, 0.74814, 0.78538, 1.04674},
2320 {0.74127, 0.74239, 0.74605, 0.75303, 0.77022, 0.82204,
2321 0.80078, 0.79484, 0.80416, 0.84147, 1.10261},
2322 {0.79736, 0.79846, 0.80206, 0.80947, 0.82330, 0.87813,
2323 0.85688, 0.85087, 0.86023, 0.89752, 1.15874},
2324 {0.85342, 0.85454, 0.85815, 0.86519, 0.87936, 0.93417,
2325 0.91293, 0.90428, 0.91631, 0.95360, 1.20760},
2326 {0.90949, 0.91061, 0.91423, 0.92128, 0.93544, 0.99026,
2327 0.96807, 0.96305, 0.97239, 1.00967, 1.27078},
2328 {0.96556, 0.96669, 0.97111, 0.97734, 0.99151, 1.04664,
2329 1.02508, 1.01879, 1.02846, 1.06167, 1.32695},
2330 {1.02167, 1.02279, 1.02656, 1.03341, 1.04759, 1.10242,
2331 1.08115, 1.07003, 1.08453, 1.12184, 1.38304},
2332 {1.07776, 1.07883, 1.08242, 1.08950, 1.10384, 1.16422,
2333 1.13725, 1.13133, 1.14061, 1.17793, 1.43910},
2334 {1.13379, 1.13492, 1.13864, 1.14567, 1.15973, 1.21455,
2335 1.19323, 1.18734, 1.19668, 1.23401, 1.49528},
2336 {1.18988, 1.19098, 1.19457, 1.20164, 1.21582, 1.27064,
2337 1.24937, 1.24044, 1.25275, 1.29004, 1.55137},
2338 {1.24592, 1.24706, 1.25087, 1.25773, 1.27188, 1.32670,
2339 1.30544, 1.29953, 1.30883, 1.34613, 1.60743},
2340 {1.30202, 1.30313, 1.30673, 1.31381, 1.32797, 1.38278,
2341 1.36151, 1.35167, 1.36490, 1.40221, 1.66306},
2342 {1.35809, 1.35921, 1.36282, 1.36986, 1.38403, 1.43888,
2343 1.41760, 1.41174, 1.42083, 1.45830, 1.71915},
2344 {1.41419, 1.41528, 1.41890, 1.42595, 1.44011, 1.49496,
2345 1.47368, 1.46769, 1.47706, 1.51436, 1.77523},
2346 {1.47131, 1.47141, 1.47494, 1.48850, 1.49620, 1.55137,
2347 1.52977, 1.51820, 1.53315, 1.57042, 1.83158},
2348 {1.52635, 1.52750, 1.53103, 1.53814, 1.55228, 1.60736,
2349 1.58503, 1.57986, 1.58920, 1.62649, 1.88767},
2350 {1.58418, 1.58355, 1.58711, 1.59526, 1.60833, 1.66316,
2351 1.63345, 1.63261, 1.64556, 1.68204, 1.94359},
2352 {1.64027, 1.63958, 1.64489, 1.65024, 1.66443, 1.71925,
2353 1.69794, 1.69201, 1.70143, 1.73865, 1.99968},
2354 {1.69450, 1.69566, 1.69940, 1.70697, 1.71841, 1.77819,
2355 1.75396, 1.74814, 1.75743, 1.79083, 2.05427},
2356 {1.75054, 1.75221, 1.75527, 1.76306, 1.77662, 1.83428,
2357 1.81006, 1.81173, 1.81345, 1.85076, 2.10289}};
2358
2359 // Garfield simulation at UD = -2100V; vd = 1.959cm/microsec, <driftfield> = 720V/cm
2360 Float_t time2100[ktimebin][kZbin] =
2361 {{0.09160, 0.09194, 0.09294, 0.09462, 0.09701, 0.10017,
2362 0.10424, 0.10974, 0.11823, 0.13988, 0.37762},
2363 {0.06585, 0.06619, 0.06731, 0.06916, 0.07174, 0.07509,
2364 0.07933, 0.08500, 0.09370, 0.11609, 0.35565},
2365 {0.03960, 0.04001, 0.04171, 0.04430, 0.04774, 0.05182,
2366 0.05668, 0.06294, 0.07291, 0.09896, 0.34676},
2367 {0.01109, 0.01280, 0.01716, 0.02279, 0.02876, 0.03474,
2368 0.04096, 0.04908, 0.06424, 0.10612, 0.36790},
2369 {0.01114, 0.01285, 0.01719, 0.02287, 0.02863, 0.03449,
2370 0.04073, 0.04964, 0.06759, 0.11446, 0.37162},
2371 {0.03922, 0.03977, 0.04146, 0.04386, 0.04711, 0.05109,
2372 0.05605, 0.06287, 0.07575, 0.10713, 0.36298},
2373 {0.06504, 0.06538, 0.06641, 0.06818, 0.07064, 0.07426,
2374 0.07852, 0.08483, 0.09581, 0.12363, 0.37424},
2375 {0.09103, 0.09129, 0.09186, 0.09291, 0.09476, 0.00000,
2376 0.10923, 0.11578, 0.12873, 0.16005, 0.41525},
2377 {0.12723, 0.12777, 0.12988, 0.13458, 0.14579, 0.20264,
2378 0.17421, 0.17078, 0.18132, 0.21708, 0.47699},
2379 {0.17508, 0.17601, 0.17897, 0.18487, 0.19698, 0.24881,
2380 0.22737, 0.22337, 0.23348, 0.27000, 0.53032},
2381 {0.22571, 0.22663, 0.22969, 0.23570, 0.24787, 0.29826,
2382 0.27871, 0.27462, 0.28471, 0.32122, 0.58166},
2383 {0.27664, 0.27759, 0.28067, 0.28669, 0.29891, 0.34898,
2384 0.32982, 0.32570, 0.33576, 0.37229, 0.63268},
2385 {0.32766, 0.32862, 0.33170, 0.33778, 0.34988, 0.39973,
2386 0.38088, 0.37675, 0.38680, 0.42333, 0.68159},
2387 {0.37872, 0.37966, 0.38275, 0.38875, 0.40093, 0.45073,
2388 0.43192, 0.42780, 0.43786, 0.47438, 0.73480},
2389 {0.42974, 0.43070, 0.43378, 0.43982, 0.45196, 0.50177,
2390 0.48297, 0.47884, 0.48889, 0.52544, 0.78581},
2391 {0.48081, 0.48175, 0.48482, 0.49084, 0.50302, 0.55290,
2392 0.53398, 0.52988, 0.53994, 0.57647, 0.83687},
2393 {0.53645, 0.53295, 0.53586, 0.54188, 0.55408, 0.60398,
2394 0.58504, 0.58092, 0.59100, 0.62768, 0.88773},
2395 {0.58345, 0.58409, 0.58690, 0.59292, 0.60510, 0.65562,
2396 0.63609, 0.63197, 0.64203, 0.67856, 0.93907},
2397 {0.63397, 0.63490, 0.63795, 0.64403, 0.65613, 0.70612,
2398 0.68714, 0.68301, 0.69294, 0.72955, 0.99000},
2399 {0.68496, 0.68592, 0.68899, 0.69504, 0.70733, 0.75708,
2400 0.73818, 0.73405, 0.74412, 0.78064, 1.04100},
2401 {0.73600, 0.73696, 0.74003, 0.74624, 0.75828, 0.80805,
2402 0.78904, 0.78512, 0.79517, 0.83152, 1.09205},
2403 {0.78709, 0.78801, 0.79108, 0.79709, 0.80931, 0.85906,
2404 0.84027, 0.83614, 0.84621, 0.88269, 1.14058},
2405 {0.83808, 0.83905, 0.84215, 0.84816, 0.86031, 0.91011,
2406 0.89139, 0.88718, 0.89725, 0.93377, 1.19413},
2407 {0.88916, 0.89010, 0.89320, 0.89920, 0.91136, 0.96117,
2408 0.94235, 0.93822, 0.94828, 0.98480, 1.24538},
2409 {0.94036, 0.94113, 0.94422, 0.95023, 0.96241, 1.01220,
2410 0.99310, 0.98927, 0.99933, 1.03585, 1.29629},
2411 {0.99139, 0.99220, 0.99525, 1.00127, 1.01344, 1.06324,
2412 1.04451, 1.04033, 1.04836, 1.08690, 1.34727},
2413 {1.04261, 1.04325, 1.04628, 1.05232, 1.06448, 1.12090,
2414 1.09546, 1.09136, 1.10142, 1.13795, 1.39831},
2415 {1.09331, 1.09429, 1.09742, 1.10336, 1.11557, 1.16547,
2416 1.14658, 1.13642, 1.15247, 1.18898, 1.44936},
2417 {1.14436, 1.14539, 1.14847, 1.15443, 1.16662, 1.21794,
2418 1.19763, 1.19329, 1.20349, 1.23956, 1.50043},
2419 {1.19533, 1.19651, 1.19943, 1.20548, 1.21666, 1.26753,
2420 1.24862, 1.24434, 1.25455, 1.29106, 1.55142},
2421 {1.24638, 1.24756, 1.25046, 1.25648, 1.26764, 1.31858,
2422 1.29967, 1.29538, 1.30499, 1.34211, 1.60250},
2423 {1.29747, 1.29847, 1.30175, 1.30753, 1.31869, 1.36969,
2424 1.35069, 1.34656, 1.35663, 1.39316, 1.64644},
2425 {1.35537, 1.34952, 1.35255, 1.35869, 1.36973, 1.41387,
2426 1.40173, 1.39761, 1.40768, 1.44396, 1.70238},
2427 {1.39956, 1.40056, 1.40380, 1.40961, 1.42178, 1.46492,
2428 1.45278, 1.45423, 1.45872, 1.49522, 1.75557},
2429 {1.45080, 1.45159, 1.45463, 1.46109, 1.47287, 1.52263,
2430 1.50382, 1.50050, 1.50977, 1.54502, 1.80670},
2431 {1.50165, 1.50264, 1.50570, 1.51214, 1.52233, 1.57370,
2432 1.55484, 1.55155, 1.56080, 1.59731, 1.85778},
2433 {1.55269, 1.55364, 1.55675, 1.56274, 1.57491, 1.62598,
2434 1.60590, 1.60259, 1.61185, 1.64836, 1.90883},
2435 {1.60368, 1.60469, 1.60779, 1.61373, 1.62596, 1.67738,
2436 1.65651, 1.65249, 1.66290, 1.69936, 1.95959}};
2437
2438 // Garfield simulation at UD = -2200V; vd = 2.134cm/microsec, <driftfield> = 753V/cm
2439 Float_t time2200[ktimebin][kZbin] =
2440 {{0.09162, 0.09194, 0.09292, 0.09460, 0.09702, 0.10014,
2441 0.10421, 0.10971, 0.11820, 0.13990, 0.37745},
2442 {0.06581, 0.06618, 0.06730, 0.06915, 0.07173, 0.07507,
2443 0.07931, 0.08497, 0.09368, 0.11609, 0.35560},
2444 {0.03947, 0.04001, 0.04167, 0.04429, 0.04772, 0.05183,
2445 0.05667, 0.06293, 0.07292, 0.09900, 0.34673},
2446 {0.01111, 0.01280, 0.01716, 0.02279, 0.02876, 0.03473,
2447 0.04091, 0.04907, 0.06426, 0.10620, 0.36766},
2448 {0.01113, 0.01285, 0.01719, 0.02276, 0.02863, 0.03452,
2449 0.04076, 0.04960, 0.06745, 0.11419, 0.37139},
2450 {0.03923, 0.03978, 0.04137, 0.04387, 0.04713, 0.05110,
2451 0.05605, 0.06284, 0.07551, 0.10677, 0.36210},
2452 {0.06505, 0.06540, 0.06644, 0.06820, 0.07069, 0.07401,
2453 0.07852, 0.08479, 0.09565, 0.12325, 0.37313},
2454 {0.09107, 0.09127, 0.09181, 0.09291, 0.09474, 0.00000,
2455 0.10883, 0.11528, 0.12789, 0.15865, 0.41313},
2456 {0.12559, 0.12622, 0.12800, 0.13206, 0.14166, 0.19331,
2457 0.16832, 0.16632, 0.17724, 0.21218, 0.47098},
2458 {0.16992, 0.17070, 0.17325, 0.17831, 0.18871, 0.23557,
2459 0.21690, 0.21451, 0.22514, 0.26082, 0.52034},
2460 {0.21640, 0.21722, 0.21987, 0.22500, 0.23540, 0.28097,
2461 0.26399, 0.26154, 0.27214, 0.30784, 0.56734},
2462 {0.26318, 0.26400, 0.26679, 0.27181, 0.28220, 0.32739,
2463 0.31090, 0.30842, 0.31902, 0.35474, 0.61415},
2464 {0.31001, 0.31085, 0.31348, 0.31866, 0.32903, 0.37412,
2465 0.35777, 0.35546, 0.36588, 0.40159, 0.66103},
2466 {0.35687, 0.35769, 0.36033, 0.36556, 0.37588, 0.42094,
2467 0.40523, 0.40214, 0.41273, 0.44841, 0.70785},
2468 {0.40372, 0.40457, 0.40723, 0.41234, 0.42273, 0.46778,
2469 0.45148, 0.44903, 0.45961, 0.49526, 0.75486},
2470 {0.45062, 0.45139, 0.45404, 0.45966, 0.46958, 0.51470,
2471 0.49833, 0.49584, 0.50644, 0.54211, 0.80160},
2472 {0.49742, 0.49825, 0.50088, 0.50605, 0.51644, 0.56148,
2473 0.54518, 0.54270, 0.55330, 0.58897, 0.84854},
2474 {0.54427, 0.54510, 0.54774, 0.55290, 0.56329, 0.60846,
2475 0.59203, 0.58955, 0.60014, 0.63578, 0.89528},
2476 {0.59119, 0.59199, 0.59471, 0.59975, 0.61014, 0.65533,
2477 0.63889, 0.63636, 0.64699, 0.68269, 0.94197},
2478 {0.63866, 0.63880, 0.64145, 0.64664, 0.65701, 0.70639,
2479 0.68574, 0.68325, 0.69385, 0.72949, 0.98900},
2480 {0.68483, 0.68566, 0.68831, 0.69347, 0.70386, 0.74890,
2481 0.73260, 0.73010, 0.74069, 0.77638, 1.03320},
2482 {0.73168, 0.73255, 0.73515, 0.74031, 0.75072, 0.79576,
2483 0.77117, 0.77501, 0.78755, 0.82318, 1.08006},
2484 {0.77854, 0.78310, 0.78200, 0.79525, 0.79756, 0.84281,
2485 0.81803, 0.82393, 0.83441, 0.87008, 1.12692},
2486 {0.82541, 0.82642, 0.82916, 0.83528, 0.84442, 0.89086,
2487 0.87315, 0.87079, 0.88125, 0.91694, 1.17648},
2488 {0.87226, 0.87308, 0.87602, 0.88086, 0.89128, 0.93772,
2489 0.92001, 0.91751, 0.92811, 0.95587, 1.22328},
2490 {0.91921, 0.91994, 0.92256, 0.92772, 0.94713, 0.98566,
2491 0.96690, 0.96436, 0.97495, 1.01064, 1.26882},
2492 {0.96790, 0.96679, 0.96941, 0.97463, 0.99399, 1.03001,
2493 1.01376, 1.01112, 1.02181, 1.05749, 1.31568},
2494 {1.01278, 1.01390, 1.01674, 1.02147, 1.03182, 1.07820,
2495 1.06056, 1.05798, 1.06867, 1.10433, 1.36390},
2496 {1.05964, 1.06076, 1.06331, 1.06833, 1.07870, 1.13297,
2497 1.10742, 1.10520, 1.11543, 1.15120, 1.41069},
2498 {1.10664, 1.10762, 1.10997, 1.11519, 1.12556, 1.17531,
2499 1.15427, 1.14620, 1.16229, 1.19805, 1.45758},
2500 {1.15352, 1.15421, 1.15683, 1.16218, 1.17242, 1.21910,
2501 1.20035, 1.19863, 1.20579, 1.24473, 1.50412},
2502 {1.20019, 1.20115, 1.20369, 1.20892, 1.21928, 1.26913,
2503 1.24721, 1.24549, 1.25605, 1.29159, 1.54920},
2504 {1.24707, 1.24846, 1.25052, 1.25602, 1.26608, 1.31558,
2505 1.29448, 1.29232, 1.30293, 1.33675, 1.59798},
2506 {1.29391, 1.29475, 1.29738, 1.30255, 1.31294, 1.36244,
2507 1.34167, 1.33918, 1.34979, 1.38229, 1.64496},
2508 {1.34078, 1.34304, 1.34424, 1.35565, 1.35980, 1.40930,
2509 1.38853, 1.38229, 1.39664, 1.42863, 1.69162},
2510 {1.38762, 1.38847, 1.39110, 1.39627, 1.40666, 1.45183,
2511 1.43539, 1.43289, 1.44348, 1.47549, 1.73876},
2512 {1.43524, 1.43533, 1.43796, 1.44310, 1.45371, 1.49305,
2513 1.48224, 1.47941, 1.49034, 1.52601, 1.78552},
2514 {1.48122, 1.48219, 1.48482, 1.48991, 1.50030, 1.53991,
2515 1.52898, 1.52653, 1.53653, 1.57282, 1.82386}};
2516
4d18a639 2517 if (fTimeStruct1) {
2518 delete [] fTimeStruct1;
2519 }
2520 fTimeStruct1 = new Float_t[ktimebin*kZbin];
2521
2522 if (fTimeStruct2) {
2523 delete [] fTimeStruct2;
2524 }
2525 fTimeStruct2 = new Float_t[ktimebin*kZbin];
2526
2527 for (Int_t ctrt = 0; ctrt < ktimebin; ctrt++) {
2528 for (Int_t ctrz = 0; ctrz < kZbin; ctrz++) {
2529 if (vdrift > fVDsmp[6]) {
2530 fTimeStruct1[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2531 fTimeStruct2[ctrt+ctrz*ktimebin] = time2200[ctrt][ctrz];
2532 fVDlo = fVDsmp[6];
2533 fVDhi = fVDsmp[7];
2534 }
2535 else if (vdrift > fVDsmp[5]) {
2536 fTimeStruct1[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2537 fTimeStruct2[ctrt+ctrz*ktimebin] = time2100[ctrt][ctrz];
2538 fVDlo = fVDsmp[5];
2539 fVDhi = fVDsmp[6];
2540 }
2541 else if (vdrift > fVDsmp[4]) {
2542 fTimeStruct1[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2543 fTimeStruct2[ctrt+ctrz*ktimebin] = time2000[ctrt][ctrz];
2544 fVDlo = fVDsmp[4];
2545 fVDhi = fVDsmp[5];
2546 }
2547 else if (vdrift > fVDsmp[3]) {
2548 fTimeStruct1[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2549 fTimeStruct2[ctrt+ctrz*ktimebin] = time1900[ctrt][ctrz];
2550 fVDlo = fVDsmp[3];
2551 fVDhi = fVDsmp[4];
2552 }
2553 else if (vdrift > fVDsmp[2]) {
2554 fTimeStruct1[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2555 fTimeStruct2[ctrt+ctrz*ktimebin] = time1800[ctrt][ctrz];
2556 fVDlo = fVDsmp[2];
2557 fVDhi = fVDsmp[3];
2558 }
2559 else if (vdrift > fVDsmp[1]) {
2560 fTimeStruct1[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2561 fTimeStruct2[ctrt+ctrz*ktimebin] = time1700[ctrt][ctrz];
2562 fVDlo = fVDsmp[1];
2563 fVDhi = fVDsmp[2];
2564 }
2565 else if (vdrift > (fVDsmp[0] - 1.0e-5)) {
2566 fTimeStruct1[ctrt+ctrz*ktimebin] = time1500[ctrt][ctrz];
2567 fTimeStruct2[ctrt+ctrz*ktimebin] = time1600[ctrt][ctrz];
2568 fVDlo = fVDsmp[0];
2569 fVDhi = fVDsmp[1];
3551db50 2570 }
2571 }
2572 }
4d18a639 2573
3551db50 2574}
2575
2576//_____________________________________________________________________________
2577void AliTRDdigitizer::RecalcDiffusion(Float_t vdrift)
2578{
4d18a639 2579 //
2580 // Recalculates the diffusion parameters
2581 //
0dbeb81c 2582 // The B=0 case is not really included here.
2583 // Should be revisited!
2584 //
4d18a639 2585
2586 if (vdrift == fDiffLastVdrift) {
3551db50 2587 return;
4d18a639 2588 }
7754cd1f 2589
4d18a639 2590 AliTRDSimParam *simParam = AliTRDSimParam::Instance();
9afbd7de 2591 if (!simParam) {
4329977a 2592 AliFatal("Could not get simulation parameters");
3551db50 2593 return;
2594 }
2595
4d18a639 2596 AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance();
9afbd7de 2597 if (!commonParam) {
4329977a 2598 AliFatal("Could not get common parameters");
3551db50 2599 return;
2600 }
2601
4d18a639 2602 AliTRDcalibDB *calibration = AliTRDcalibDB::Instance();
9afbd7de 2603 if (!calibration) {
4329977a 2604 AliFatal("Could not get calibration object");
3551db50 2605 return;
2606 }
2607
4e009ce4 2608 // The magnetic field strength
1b95a37b 2609 Double_t x[3] = { 0.0, 0.0, 0.0 };
2610 Double_t b[3];
4e009ce4 2611 gAlice->Field(x,b); // b[] is in kilo Gauss
1b95a37b 2612 Float_t field = b[2] * 0.1; // Tesla
1b95a37b 2613
4d18a639 2614 fDiffLastVdrift = vdrift;
3551db50 2615
9afbd7de 2616 // DiffusionL
4d18a639 2617 const Int_t kNbL = 5;
2618 Float_t p0L[kNbL] = { 0.007440, 0.007493, 0.007513, 0.007672, 0.007831 };
2619 Float_t p1L[kNbL] = { 0.019252, 0.018912, 0.018636, 0.018012, 0.017343 };
2620 Float_t p2L[kNbL] = { -0.005042, -0.004926, -0.004867, -0.004650, -0.004424 };
2621 Float_t p3L[kNbL] = { 0.000195, 0.000189, 0.000195, 0.000182, 0.000169 };
2622
2623 Int_t ibL = ((Int_t) (10 * (field - 0.15)));
2624 ibL = TMath::Max( 0,ibL);
2625 ibL = TMath::Min(kNbL,ibL);
2626
2627 fDiffusionL = p0L[ibL]
2628 + p1L[ibL] * vdrift
2629 + p2L[ibL] * vdrift*vdrift
2630 + p3L[ibL] * vdrift*vdrift*vdrift;
3551db50 2631
9afbd7de 2632 // DiffusionT
4d18a639 2633 const Int_t kNbT = 5;
2634 Float_t p0T[kNbT] = { 0.009550, 0.009599, 0.009674, 0.009757, 0.009850 };
2635 Float_t p1T[kNbT] = { 0.006667, 0.006539, 0.006359, 0.006153, 0.005925 };
2636 Float_t p2T[kNbT] = { -0.000853, -0.000798, -0.000721, -0.000635, -0.000541 };
2637 Float_t p3T[kNbT] = { 0.000131, 0.000122, 0.000111, 0.000098, 0.000085 };
2638
2639 Int_t ibT= ((Int_t) (10 * (field - 0.15)));
2640 ibT = TMath::Max( 0,ibT);
2641 ibT = TMath::Min(kNbT,ibT);
2642
2643 fDiffusionT = p0T[ibT]
2644 + p1T[ibT] * vdrift
2645 + p2T[ibT] * vdrift*vdrift
2646 + p3T[ibT] * vdrift*vdrift*vdrift;
3551db50 2647
9afbd7de 2648 // OmegaTau
4e009ce4 2649 fOmegaTau = calibration->GetOmegaTau(vdrift,field);
1b95a37b 2650
9afbd7de 2651 // Lorentzfactor
4d18a639 2652 if (commonParam->ExBOn()) {
2653 fLorentzFactor = 1.0 / (1.0 + fOmegaTau*fOmegaTau);
2654 }
2655 else {
2656 fLorentzFactor = 1.0;
3551db50 2657 }
9afbd7de 2658
3551db50 2659}
2660
2661//_____________________________________________________________________________
2662Float_t AliTRDdigitizer::GetDiffusionL(Float_t vdrift)
2663{
2664 //
2665 // Returns the longitudinal diffusion coefficient for a given drift
2666 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2667 // The values are according to a GARFIELD simulation.
2668 //
2669
2670 RecalcDiffusion(vdrift);
4d18a639 2671
2672 return fDiffusionL;
9afbd7de 2673
3551db50 2674}
2675
2676//_____________________________________________________________________________
2677Float_t AliTRDdigitizer::GetDiffusionT(Float_t vdrift)
2678{
2679 //
2680 // Returns the transverse diffusion coefficient for a given drift
2681 // velocity <vd> and a B-field <b> for Xe/CO2 (15%).
2682 // The values are according to a GARFIELD simulation.
2683 //
2684
2685 RecalcDiffusion(vdrift);
4d18a639 2686
2687 return fDiffusionT;
9afbd7de 2688
3551db50 2689}
2690
2691//_____________________________________________________________________________
4329977a 2692Int_t AliTRDdigitizer::Diffusion(Float_t vdrift, Double_t absdriftlength
2693 , Double_t &lRow, Double_t &lCol, Double_t &lTime)
3551db50 2694{
2695 //
4329977a 2696 // Applies the diffusion smearing to the position of a single electron.
2697 // Depends on absolute drift length.
3551db50 2698 //
2699
2700 RecalcDiffusion(vdrift);
2701
4329977a 2702 Float_t driftSqrt = TMath::Sqrt(absdriftlength);
4d18a639 2703 Float_t sigmaT = driftSqrt * fDiffusionT;
2704 Float_t sigmaL = driftSqrt * fDiffusionL;
4329977a 2705 lRow = gRandom->Gaus(lRow ,sigmaT);
2706 lCol = gRandom->Gaus(lCol ,sigmaT * GetLorentzFactor(vdrift));
2707 lTime = gRandom->Gaus(lTime,sigmaL * GetLorentzFactor(vdrift));
3551db50 2708
2709 return 1;
9afbd7de 2710
3551db50 2711}
2712
2713//_____________________________________________________________________________
2714Float_t AliTRDdigitizer::GetLorentzFactor(Float_t vd)
2715{
9afbd7de 2716 //
2717 // Returns the recalculated Lorentz factor
2718 //
2719
3551db50 2720 RecalcDiffusion(vd);
4d18a639 2721
2722 return fLorentzFactor;
9afbd7de 2723
3551db50 2724}
2725
2726//_____________________________________________________________________________
4329977a 2727Int_t AliTRDdigitizer::ExB(Float_t vdrift, Double_t driftlength, Double_t &lCol)
3551db50 2728{
2729 //
4329977a 2730 // Applies E x B effects to the position of a single electron.
2731 // Depends on signed drift length.
3551db50 2732 //
2733
2734 RecalcDiffusion(vdrift);
4329977a 2735
2736 lCol = lCol + fOmegaTau * driftlength;
3551db50 2737
2738 return 1;
9afbd7de 2739
3551db50 2740}