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AliFMDReconstructor.cxx
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1 //____________________________________________________________________
2 //
3 // This is a class that constructs AliFMDRecPoint objects from of Digits
4 // This class reads either digits from a TClonesArray or raw data from
5 // a DDL file (or similar), and stores the read ADC counts in an
6 // internal cache (fAdcs). The rec-points are made via the naiive
7 // method.
8 //
9 //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia
10 // Latest changes by Christian Holm Christensen <cholm@nbi.dk>
11 //
12 //
13 //____________________________________________________________________
14 /**************************************************************************
15  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
16  * *
17  * Author: The ALICE Off-line Project. *
18  * Contributors are mentioned in the code where appropriate. *
19  * *
20  * Permission to use, copy, modify and distribute this software and its *
21  * documentation strictly for non-commercial purposes is hereby granted *
22  * without fee, provided that the above copyright notice appears in all *
23  * copies and that both the copyright notice and this permission notice *
24  * appear in the supporting documentation. The authors make no claims *
25  * about the suitability of this software for any purpose. It is *
26  * provided "as is" without express or implied warranty. *
27  **************************************************************************/
28 /* $Id$ */
36 // #include <AliLog.h> // ALILOG_H
37 // #include <AliRun.h> // ALIRUN_H
38 #include "AliFMDDebug.h"
39 #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H
40 #include "AliFMDParameters.h" // ALIFMDPARAMETERS_H
41 #include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H
42 #include "AliFMDDigit.h" // ALIFMDDIGIT_H
43 #include "AliFMDSDigit.h" // ALIFMDDIGIT_H
44 #include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H
45 #include "AliFMDRecoParam.h" // ALIFMDRECOPARAM_H
46 #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H
47 #include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H
48 #include "AliESDEvent.h" // ALIESDEVENT_H
49 #include "AliESDVertex.h" // ALIESDVERTEX_H
50 #include "AliESDTZERO.h" // ALIESDVERTEX_H
51 #include <AliESDFMD.h> // ALIESDFMD_H
52 #include <TMath.h>
53 #include <TH1.h>
54 #include <TH2.h>
55 #include <TFile.h>
56 #include <climits>
57 #include "AliFMDESDRevertexer.h"
58 
59 
60 class AliRawReader;
61 
62 //____________________________________________________________________
64 #if 0
65  ; // This is here to keep Emacs for indenting the next line
66 #endif
67 
68 //____________________________________________________________________
70  : AliReconstructor(),
71  fMult(0x0),
72  fNMult(0),
73  fTreeR(0x0),
74  fCurrentVertex(0),
75  fESDObj(0x0),
76  fNoiseFactor(0),
77  fAngleCorrect(kTRUE),
78  fVertexType(kNoVertex),
79  fESD(0x0),
80  fDiagnostics(kFALSE),
81  fDiagStep1(0),
82  fDiagStep2(0),
83  fDiagStep3(0),
84  fDiagStep4(0),
85  fDiagAll(0),
86  fBad(0),
87  fZombie(false)
88 {
89  // Make a new FMD reconstructor object - default CTOR.
90  SetNoiseFactor();
91  SetAngleCorrect();
92  if (AliDebugLevel() > 0) fDiagnostics = kTRUE;
93  for(Int_t det = 1; det<=3; det++) {
94  fZS[det-1] = kFALSE;
95  fZSFactor[det-1] = 0;
96  }
97 }
98 
99 //____________________________________________________________________
101 {
102  // Destructor
103  if (fMult) fMult->Delete();
104  if (fMult) delete fMult;
105  if (fESDObj) delete fESDObj;
106 }
107 
108 //____________________________________________________________________
109 void
111 {
112  // Initialize the reconstructor
113 
114  // Initialize the geometry
116  geom->Init();
117  geom->InitTransformations();
118 
119  // Initialize the parameters
121  if (param->Init(true) != 0) {
122  AliError("Failed to initialize parameters, making zombie");
123  fZombie = true;
124  }
125  else
126  fZombie = false;
127 
128  // Current vertex position
129  fCurrentVertex = 0;
130  // Create array of reconstructed strip multiplicities
131  // fMult = new TClonesArray("AliFMDRecPoint", 51200);
132  // Create ESD output object
133  fESDObj = new AliESDFMD;
134 
135  // Check if we need diagnostics histograms
136  if (!fDiagnostics) return;
137  AliInfo("Making diagnostics histograms");
138  if (!fDiagStep1) {
139  fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC",
140  1024, -.5, 1023.5, 1024, -.5, 1023.5);
141  fDiagStep1->SetDirectory(0);
142  fDiagStep1->GetXaxis()->SetTitle("ADC (read)");
143  fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)",
144  fNoiseFactor));
145  }
146  if (!fDiagStep2) {
147  fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced",
148  1024, -.5, 1023.5, 100, 0, 2);
149  fDiagStep2->SetDirectory(0);
150  fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)");
151  fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]");
152  }
153  if (!fDiagStep3) {
154  fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected",
155  100, 0., 2., 100, 0., 2.);
156  fDiagStep3->SetDirectory(0);
157  fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]");
158  fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]");
159  }
160  if (!fDiagStep4) {
161  fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced",
162  100, 0., 2., 100, -.1, 19.9);
163  fDiagStep4->SetDirectory(0);
164  fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]");
165  fDiagStep4->GetYaxis()->SetTitle("Multiplicity");
166  fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced",
167  1024, -.5, 1023.5, 100, -.1, 19.9);
168  }
169  if (fDiagAll) {
170  fDiagAll->SetDirectory(0);
171  fDiagAll->GetXaxis()->SetTitle("ADC (read)");
172  fDiagAll->GetYaxis()->SetTitle("Multiplicity");
173  }
174 }
175 
176 //____________________________________________________________________
177 void
179  TTree* digitsTree) const
180 {
181  // Convert Raw digits to AliFMDDigit's in a tree
182  if (fZombie) {
183  AliWarning("I'm a zombie - cannot do anything");
184  return;
185  }
186  AliFMDDebug(1, ("Reading raw data into digits tree"));
187  if (!digitsTree) {
188  AliError("No digits tree passed");
189  return;
190  }
191  static TClonesArray* array = 0;
192  if (!array) array = new TClonesArray("AliFMDDigit");
193  digitsTree->Branch("FMD", &array);
194  array->Clear();
195 
196  AliFMDRawReader rawRead(reader, digitsTree);
197  // rawRead.SetSampleRate(fFMD->GetSampleRate());
198  // rawRead.Exec();
199  rawRead.ReadAdcs(array);
200 
201  Int_t nWrite = digitsTree->Fill();
202  AliDebugF(1, "Got a grand total of %d digits, wrote %d bytes to tree",
203  array->GetEntriesFast(), nWrite);
204 
205 
207  for (UShort_t i = 1; i <= 3; i++) {
208  fZS[i-1] = rawRead.IsZeroSuppressed(map->Detector2DDL(i));
209  fZSFactor[i-1] = rawRead.NoiseFactor(map->Detector2DDL(i));
210  AliDebugF(2, "Noise factor for FMD%hu: %d", i, fZSFactor[i-1]);
211  }
212 }
213 
214 //____________________________________________________________________
215 void
216 AliFMDReconstructor::GetVertex(AliESDEvent* esd) const
217 {
218  // Return the vertex to use.
219  // This is obtained from the ESD object.
220  // If not found, a warning is issued.
222  fCurrentVertex = 0;
223  if (!esd) return;
224 
225  const AliESDVertex* vertex = esd->GetPrimaryVertex();
226  if (!vertex) vertex = esd->GetPrimaryVertexSPD();
227  if (!vertex) vertex = esd->GetPrimaryVertexTPC();
228  if (!vertex) vertex = esd->GetVertex();
229 
230  if (vertex) {
231  AliFMDDebug(2, ("Got %s (%s) from ESD: %f",
232  vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
233  fCurrentVertex = vertex->GetZ();
235  return;
236  }
237  else if (esd->GetESDTZERO()) {
238  AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex()));
239  fCurrentVertex = esd->GetT0zVertex();
241  return;
242  }
243  AliWarning("Didn't get any vertex from ESD or generator");
244 }
245 
246 //____________________________________________________________________
247 Int_t
249 {
250  // Get the detector identifier.
251  // Note the actual value is cached so that we do not
252  // need to do many expensive string comparisons.
253  static Int_t idx = AliReconstruction::GetDetIndex(GetDetectorName());
254  return idx;
255 }
256 
257 //____________________________________________________________________
258 const AliFMDRecoParam*
260 {
261  // Get the reconstruction parameters.
262  //
263  // Return:
264  // Pointer to reconstruction parameters or null if not found or wrong type
265  Int_t iDet = GetIdentifier(); // Was 12 - but changed on Cvetans request
266  const AliDetectorRecoParam* params = AliReconstructor::GetRecoParam(iDet);
267  if (!params || params->IsA() != AliFMDRecoParam::Class()) return 0;
268  return static_cast<const AliFMDRecoParam*>(params);
269 }
270 
271 //____________________________________________________________________
272 void
274 {
275  //
276  // Set-up reconstructor to use values from reconstruction
277  // parameters, if present, for this event. If the argument @a set
278  // is @c false, then restore preset values.
279  //
280  // Parameters:
281  // set
282  //
283  static Float_t savedNoiseFactor = fNoiseFactor;
284  static Bool_t savedAngleCorrect = fAngleCorrect;
285  if (set) {
286  const AliFMDRecoParam* params = GetParameters();
287  if (params) {
288  fNoiseFactor = params->NoiseFactor();
289  fAngleCorrect = params->AngleCorrect();
290  }
291  return;
292  }
293  fNoiseFactor = savedNoiseFactor;
294  fAngleCorrect = savedAngleCorrect;
295 }
296 
297 
298 //____________________________________________________________________
299 void
301 {
302  // Loop over all entries of the ESD and mark
303  // those that are dead as such
304  // - otherwise put in the zero signal.
306 
307  for (UShort_t d = 1; d <= 3; d++) {
308  UShort_t nR = (d == 1 ? 1 : 2);
309 
310  for (UShort_t q = 0; q < nR; q++) {
311  Char_t r = (q == 0 ? 'I' : 'O');
312  UShort_t nS = (q == 0 ? 20 : 40);
313  UShort_t nT = (q == 0 ? 512 : 256);
314 
315  for (UShort_t s = 0; s < nS; s++) {
316  for (UShort_t t = 0; t < nT; t++) {
317  // A strip can be marked `bad' for two reasons:
318  //
319  // - The raw reader fails to read the value
320  // - The strip is marked in OCDB as bad (IsDead)
321  //
322  // Hence, a dead strip will always be marked kInvalid here,
323  // while a non-dead bad-read strip will be filled with 0.
324  if (fBad(d, r, s, t)) {
325  AliDebugF(5, "Marking FMD%d%c[%2d,%3d] as bad", d, r, s, t);
326  esd->SetMultiplicity(d, r, s, t, AliESDFMD::kInvalidMult);
327  }
328  if (param->IsDead(d, r, s, t)) {
329  AliDebugF(5, "Marking FMD%d%c[%2d,%3d] as dead", d, r, s, t);
330  esd->SetMultiplicity(d, r, s, t, AliESDFMD::kInvalidMult);
331  // esd->SetEta(d, r, s, t, AliESDFMD::kInvalidEta);
332  }
333  else if (esd->Multiplicity(d, r, s, t) == AliESDFMD::kInvalidMult) {
334  AliDebugF(20, "Setting null signal in FMD%d%c[%2d,%3d]",
335  d, r, s, t);
336  esd->SetMultiplicity(d, r, s, t, 0);
337  }
338  else {
339  AliDebugF(10, "Setting FMD%d%c[%2d,%3d]=%f",d,r,s,t,
340  esd->Multiplicity(d, r, s, t));
341  }
342  }
343  }
344  }
345  }
346 }
347 
348 //____________________________________________________________________
349 Bool_t
351 {
352  AliFMDDebug(1, ("Before reoconstructing"));
353  if (fZombie) {
354  AliWarning("I'm a zombie - cannot do anything");
355  return false;
356  }
357 
358  // Get our vertex
359  GetVertex(fESD);
360 
361  // Reset bad flags
362  fBad.Reset(false);
363 
364  // Reset the output ESD
365  if (fESDObj) {
366  fESDObj->Clear();
367 
368  // Pre-set eta values
369  for (UShort_t d=1; d<=3; d++) {
370  UShort_t nQ = (d == 1 ? 1 : 2);
371  for (UShort_t q=0; q<nQ; q++) {
372  UShort_t nStr = (q == 0 ? 512 : 256);
373  Char_t r = (q == 0 ? 'I' : 'O');
374 
375  for (UShort_t t = 0; t < nStr; t++) {
376  Float_t eta, phi;
377  // Always use sector 0
378  PhysicalCoordinates(d, r, 0, t, eta, phi);
379  fESDObj->SetEta(d, r, 0, t, eta);
380  }
381  }
382  }
383  }
384 
385 
386  return true;
387 }
388 
389 //____________________________________________________________________
390 void
392 {
393  // Reconstruct directly from raw data (no intermediate output on
394  // digit tree or rec point tree).
395  //
396  // Parameters:
397  // rawReader FMD Raw event reader
398  AliFMDDebug(1, ("Reconstructing from FMD raw reader"));
399  if (!PreReconstruct()) return;
400 
401  UShort_t det, sec, str, fac;
402  Short_t adc, oldDet = -1;
403  Bool_t zs;
404  Char_t rng;
405 
407  while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) {
408  if (det != oldDet) {
409  fZS[det-1] = zs;
410  fZSFactor[det-1] = fac;
411  oldDet = det;
412  }
413  ProcessSignal(det, rng, sec, str, adc);
414  }
415  UseRecoParam(kFALSE);
416 
417 }
418 
419 //____________________________________________________________________
420 void
421 AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const
422 {
423  // Reconstruct directly from raw data (no intermediate output on
424  // digit tree or rec point tree).
425  //
426  // Parameters:
427  // reader Raw event reader
428  // ctree Not used - 'cluster tree' to store rec-points in.
429  AliFMDDebug(1, ("Reconstructing from raw reader"));
430  if (fZombie) {
431  AliWarning("I'm a zombie - cannot do anything");
432  return;
433  }
434  AliFMDRawReader rawReader(reader, 0);
435  Reconstruct(rawReader);
436 }
437 
438 //____________________________________________________________________
439 void
440 AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) const
441 {
442  // Reconstruct directly from raw data (no intermediate output on
443  // digit tree or rec point tree).
444  //
445  // Parameters:
446  // reader Raw event reader
447  // ctree Not used.
448  if (fZombie) {
449  AliWarning("I'm a zombie - cannot do anything");
450  return;
451  }
452  AliFMDRawReader rawReader(reader, 0);
453 
454  UShort_t det, sec, str, sam, rat, fac;
455  Short_t adc, oldDet = -1;
456  Bool_t zs;
457  Char_t rng;
458 
460  while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) {
461  if (!rawReader.SelectSample(sam, rat)) continue;
462  if (det != oldDet) {
463  fZS[det-1] = zs;
464  fZSFactor[det-1] = fac;
465  oldDet = det;
466  }
467  DigitizeSignal(sdigits, det, rng, sec, str, sam, adc);
468  }
469  UseRecoParam(kFALSE);
470 }
471 
472 //____________________________________________________________________
473 void
475  TTree* clusterTree) const
476 {
477  // Reconstruct event from digits in tree
478  // Get the FMD branch holding the digits.
479  // FIXME: The vertex may not be known yet, so we may have to move
480  // some of this to FillESD.
481  //
482  // Parameters:
483  // digitsTree Pointer to a tree containing digits
484  // clusterTree Pointer to output tree
485  //
486  if (!PreReconstruct()) return;
487 
488  if (!fMult) fMult = new TClonesArray("AliFMDRecPoint");
489 
490  AliFMDDebug(1, ("Reconstructing from digits in a tree"));
491 
492  // Get the digitis array
493  static TClonesArray* digits = new TClonesArray("AliFMDDigit");
494  TBranch* digitBranch = digitsTree->GetBranch("FMD");
495  if (!digitBranch) {
496  Error("Exec", "No digit branch for the FMD found");
497  return;
498  }
499  digitBranch->SetAddress(&digits);
500 
501  if (digits) digits->Clear();
502  if (fMult) fMult->Clear();
503 
504  // Create rec-point output branch
505  fNMult = 0;
506  fTreeR = clusterTree;
507  fTreeR->Branch("FMD", &fMult);
508 
509  AliDebug(5, "Getting entry 0 from digit branch");
510  digitBranch->GetEntry(0);
511 
512  AliDebugF(5, "Processing %d digits", digits->GetEntriesFast());
514  ProcessDigits(digits);
515  UseRecoParam(kFALSE);
516 
517  Int_t written = clusterTree->Fill();
518  AliFMDDebug(10, ("Filled %d bytes into cluster tree", written));
519  // digits->Delete();
520  // delete digits;
521 }
522 
523 
524 //____________________________________________________________________
525 void
527  const AliFMDRawReader& rawRead) const
528 {
529  // For each digit, find the pseudo rapdity, azimuthal angle, and
530  // number of corrected ADC counts, and pass it on to the algorithms
531  // used.
532  //
533  // Parameters:
534  // digits Array of digits
535  //
536  if (fZombie) {
537  AliWarning("I'm a zombie - cannot do anything");
538  return;
539  }
541  for (size_t i = 1; i <= 3; i++) {
542  fZS[i-1] = rawRead.IsZeroSuppressed(map->Detector2DDL(i));
543  fZSFactor[i-1] = rawRead.NoiseFactor(map->Detector2DDL(i));
544  }
546  ProcessDigits(digits);
547  UseRecoParam(kFALSE);
548 }
549 
550 //____________________________________________________________________
551 void
552 AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const
553 {
554  // For each digit, find the pseudo rapdity, azimuthal angle, and
555  // number of corrected ADC counts, and pass it on to the algorithms
556  // used.
557  //
558  // Parameters:
559  // digits Array of digits
560  //
561  Int_t nDigits = digits->GetEntries();
562  AliFMDDebug(2, ("Got %d digits", nDigits));
563  fESDObj->SetNoiseFactor(fNoiseFactor);
564  fESDObj->SetAngleCorrected(fAngleCorrect);
565  fBad.Reset(false);
566  for (Int_t i = 0; i < nDigits; i++) {
567  AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
568  if (!digit) continue;
569  ProcessDigit(digit);
570  }
571 }
572 
573 //____________________________________________________________________
574 void
576 {
577  //
578  // Process a single digit
579  //
580  // Parameters:
581  // digit Digiti to process
582  //
583  UShort_t det = digit->Detector();
584  Char_t rng = digit->Ring();
585  UShort_t sec = digit->Sector();
586  UShort_t str = digit->Strip();
587  Short_t adc = digit->Counts();
588  // if (AliLog::GetDebugLevel("FMD","")>3) digit->Print();
589  ProcessSignal(det, rng, sec, str, adc);
590 }
591 
592 //____________________________________________________________________
593 void
595  Char_t rng,
596  UShort_t sec,
597  UShort_t str,
598  Short_t adc) const
599 {
600  // Process the signal from a single strip
601  //
602  // Parameters:
603  // det Detector ID
604  // rng Ring ID
605  // sec Sector ID
606  // rng Strip ID
607  // adc ADC counts
608  //
609  Int_t dbg = AliLog::GetDebugLevel("FMD","");
610  Bool_t dhr = dbg > 3 && dbg < 10;
611  if (dhr) printf("FMD%d%c[%2d,%3d] adc=%4d ", det, rng, sec, str, adc);
612 
613  if (adc >= AliFMDRawReader::kBadSignal) {
614  AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is marked bad", det, rng, sec, str));
615  if (dhr) Printf("bad");
616  fBad(det,rng,sec,str) = true;
617  return;
618  }
619 
620  // Check that the strip is not marked as dead
622  if (param->IsDead(det, rng, sec, str)) {
623  AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str));
624  if (dhr) Printf("dead");
625  fBad(det,rng,sec,str) = true;
626  return;
627  }
628 
629  // digit->Print();
630  // Get eta and phi
631  Float_t eta = fESDObj->Eta(det, rng, 0, str);
632 
633  // Substract pedestal.
634  UShort_t counts = SubtractPedestal(det, rng, sec, str, adc);
635  if(counts == USHRT_MAX) {
636  if (dhr) Printf("invalid");
637  return;
638  }
639  if (dhr) printf("counts=%4d ", counts);
640 
641  // Gain match digits.
642  Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts);
643  // Get rid of nonsense energy
644  if(edep < 0) {
645  if (dhr) Printf("zero");
646  return;
647  }
648  if (dhr) printf("edep=%f ", edep);
649 
650  // Make rough multiplicity
651  Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep);
652  // Get rid of nonsense mult
653  //if (mult > 20) {
654  // AliWarning(Form("The mutliplicity in FMD%d%c[%2d,%3d]=%f > 20 "
655  // "(ADC: %d, Energy: %f)", det, rng, sec, str, mult,
656  // counts, edep));
657  // }
658  if (mult < 0) {
659  if (dhr) Printf("not hit");
660  return;
661  }
662 
663  if (dhr) Printf("mult=%f ", mult);
664  AliFMDDebug(10, ("FMD%d%c[%2d,%3d]: "
665  "ADC: %d, Counts: %d, Energy: %f, Mult: %f",
666  det, rng, sec, str, adc, counts, edep, mult));
667 
668  // Create a `RecPoint' on the output branch.
669  if (fMult) {
670  Float_t phi;
671  PhysicalCoordinates(det, rng, sec, str, eta, phi);
672 
673  AliFMDRecPoint* m =
674  new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str,
675  eta, phi, edep, mult);
676  (void)m; // Suppress warnings about unused variables.
677  fNMult++;
678  }
679 
680  fESDObj->SetMultiplicity(det, rng, sec, str, mult);
681  // fESDObj->SetEta(det, rng, sec, str, eta);
682 
683  if (fDiagAll) fDiagAll->Fill(adc, mult);
684 
685 }
686 
687 //____________________________________________________________________
688 void
689 AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits,
690  UShort_t det,
691  Char_t rng,
692  UShort_t sec,
693  UShort_t str,
694  UShort_t /* sam */,
695  Short_t adc) const
696 {
697  // Process the signal from a single strip
698  //
699  // Parameters:
700  // det Detector ID
701  // rng Ring ID
702  // sec Sector ID
703  // rng Strip ID
704  // adc ADC counts
705  //
707  // Check that the strip is not marked as dead
708  if (param->IsDead(det, rng, sec, str)) {
709  AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str));
710  return;
711  }
712 
713  // Substract pedestal.
714  UShort_t counts = SubtractPedestal(det, rng, sec, str, adc);
715  if(counts == USHRT_MAX || counts == 0) return;
716 
717  // Gain match digits.
718  Double_t edep = Adc2Energy(det, rng, sec, str, counts);
719  // Get rid of nonsense energy
720  if(edep < 0) return;
721 
722  Int_t n = sdigits->GetEntriesFast();
723  // AliFMDSDigit* sdigit =
724  new ((*sdigits)[n])
725  AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts);
726  // sdigit->SetCount(sam, counts);
727 }
728 
729 //____________________________________________________________________
730 UShort_t
732  Char_t rng,
733  UShort_t sec,
734  UShort_t str,
735  UShort_t adc,
736  Float_t noiseFactor,
737  Bool_t zsEnabled,
738  UShort_t zsNoiseFactor) const
739 {
740  //
741  // Subtract the pedestal off the ADC counts.
742  //
743  // Parameters:
744  // det Detector number
745  // rng Ring identifier
746  // sec Sector number
747  // str Strip number
748  // adc ADC counts
749  // noiseFactor If pedestal substracted pedestal is less then
750  // this times the noise, then consider this to be 0.
751  // zsEnabled Whether zero-suppression is on.
752  // zsNoiseFactor Noise factor used in on-line pedestal
753  // subtraction.
754  //
755  // Return:
756  // The pedestal subtracted ADC counts (possibly 0), or @c
757  // USHRT_MAX in case of problems.
758  //
760  Float_t ped = (zsEnabled ? 0 :
761  param->GetPedestal(det, rng, sec, str));
762  Float_t noise = param->GetPedestalWidth(det, rng, sec, str);
763  if (ped < 0 || noise < 0) {
764  AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) "
765  "for FMD%d%c[%02d,%03d]",
766  ped, noise, det, rng, sec, str));
767  return USHRT_MAX;
768  }
769  AliDebugClass(10, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d "
770  "(%s w/factor %d, noise factor %f, "
771  "pedestal %8.2f+/-%8.2f)",
772  det, rng, sec, str, adc,
773  (zsEnabled ? "zs'ed" : "straight"),
774  zsNoiseFactor, noiseFactor, ped, noise));
775 
776  Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped);
777  counts = TMath::Max(Int_t(counts), 0);
778  // Calculate the noise factor for suppressing remenants of the noise
779  // peak. If we have done on-line zero suppression, we only check
780  // for noise signals that are larger than the suppressed noise. If
781  // the noise factor used on line is larger than the factor used
782  // here, we do not do this check at all.
783  //
784  // For example:
785  // Online factor | Read factor | Result
786  // ---------------+--------------+-------------------------------
787  // 2 | 3 | Check if signal > 1 * noise
788  // 3 | 3 | Check if signal > 0
789  // 3 | 2 | Check if signal > 0
790  //
791  // In this way, we make sure that we do not suppress away too much
792  // data, and that the read-factor is the most stringent cut.
793  Float_t nf = zsNoiseFactor; // TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0));
794  if (counts <= noise * nf) counts = 0;
795  if (counts > 0) AliDebugClass(15, "Got a hit strip");
796 
797  UShort_t ret = counts < 0 ? 0 : counts;
798  return ret;
799 }
800 
801 
802 //____________________________________________________________________
803 UShort_t
805  Char_t rng,
806  UShort_t sec,
807  UShort_t str,
808  Short_t adc) const
809 {
810  // Member function to subtract the pedestal from a digit
811  //
812  // Parameters:
813  // det Detector ID
814  // rng Ring ID
815  // sec Sector ID
816  // rng Strip ID
817  // adc # of ADC counts
818  // Return:
819  // Pedestal subtracted signal or USHRT_MAX in case of problems
820  //
821  UShort_t counts = SubtractPedestal(det, rng, sec, str, adc,
822  fNoiseFactor, fZS[det-1],
823  fZSFactor[det-1]);
824  if (fDiagStep1) fDiagStep1->Fill(adc, counts);
825 
826  return counts;
827 }
828 
829 //____________________________________________________________________
830 Float_t
832  Char_t rng,
833  UShort_t sec,
834  UShort_t str,
835  UShort_t count) const
836 {
837  // Converts number of ADC counts to energy deposited.
838  // Note, that this member function can be overloaded by derived
839  // classes to do strip-specific look-ups in databases or the like,
840  // to find the proper gain for a strip.
841  //
842  // In the first simple version, we calculate the energy deposited as
843  //
844  // EnergyDeposited = cos(theta) * gain * count
845  //
846  // where
847  //
848  // Pre_amp_MIP_Range
849  // gain = ----------------- * Energy_deposited_per_MIP
850  // ADC_channel_size
851  //
852  // is constant and the same for all strips.
853  //
854  // For the production we use the conversion measured in the NBI lab.
855  // The total conversion is then:
856  //
857  // gain = ADC / DAC
858  //
859  // EdepMip * count
860  // => energy = ----------------
861  // gain * DACPerADC
862  //
863  // Parameters:
864  // det Detector ID
865  // rng Ring ID
866  // sec Sector ID
867  // rng Strip ID
868  // counts Number of ADC counts over pedestal
869  // Return
870  // The energy deposited in a single strip, or -1 in case of problems
871  //
872  if (count <= 0) return 0;
874  Float_t gain = param->GetPulseGain(det, rng, sec, str);
875  // 'Tagging' bad gains as bad energy
876  if (gain < 0) {
877  AliDebugF(10, "Invalid gain (%f) for FMD%d%c[%02d,%03d]",
878  gain, det, rng, sec, str);
879  return -1;
880  }
881  AliDebugF(10, "Converting counts %d to energy (factor=%f, DAC2MIP=%f)",
882  count, gain,param->GetDACPerMIP());
883 
884  Double_t edep = ((count * param->GetEdepMip())
885  / (gain * param->GetDACPerMIP()));
886  return edep;
887 }
888 
889 //____________________________________________________________________
890 Float_t
892  Char_t rng,
893  UShort_t sec,
894  UShort_t str,
895  Float_t eta,
896  UShort_t count) const
897 {
898  // Converts number of ADC counts to energy deposited.
899  // Note, that this member function can be overloaded by derived
900  // classes to do strip-specific look-ups in databases or the like,
901  // to find the proper gain for a strip.
902  //
903  // In the first simple version, we calculate the energy deposited as
904  //
905  // EnergyDeposited = cos(theta) * gain * count
906  //
907  // where
908  //
909  // Pre_amp_MIP_Range
910  // gain = ----------------- * Energy_deposited_per_MIP
911  // ADC_channel_size
912  //
913  // is constant and the same for all strips.
914  //
915  // For the production we use the conversion measured in the NBI lab.
916  // The total conversion is then:
917  //
918  // gain = ADC / DAC
919  //
920  // EdepMip * count
921  // => energy = ----------------
922  // gain * DACPerADC
923  //
924  // Parameters:
925  // det Detector ID
926  // rng Ring ID
927  // sec Sector ID
928  // rng Strip ID
929  // eta Psuedo-rapidity
930  // counts Number of ADC counts over pedestal
931  // Return
932  // The energy deposited in a single strip, or -1 in case of problems
933  //
934  Double_t edep = Adc2Energy(det, rng, sec, str, count);
935 
936  if (fDiagStep2) fDiagStep2->Fill(count, edep);
937  if (fAngleCorrect) {
938  Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta));
939  Double_t corr = TMath::Abs(TMath::Cos(theta));
940  Double_t cedep = corr * edep;
941  AliDebugF(10, "correcting for path %f * %f = %f (eta=%f, theta=%f)",
942  edep, corr, cedep, eta, theta);
943  if (fDiagStep3) fDiagStep3->Fill(edep, cedep);
944  edep = cedep;
945  }
946  return edep;
947 }
948 
949 //____________________________________________________________________
950 Float_t
952  Char_t /*rng*/,
953  UShort_t /*sec*/,
954  UShort_t /*str*/,
955  Float_t edep) const
956 {
957  // Converts an energy signal to number of particles.
958  // Note, that this member function can be overloaded by derived
959  // classes to do strip-specific look-ups in databases or the like,
960  // to find the proper gain for a strip.
961  //
962  // In this simple version, we calculate the multiplicity as
963  //
964  // multiplicity = Energy_deposited / Energy_deposited_per_MIP
965  //
966  // where
967  //
968  // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness
969  //
970  // is constant and the same for all strips
971  //
972  // Parameters:
973  // det Detector ID
974  // rng Ring ID
975  // sec Sector ID
976  // rng Strip ID
977  // edep Energy deposited in a single strip
978  // Return
979  // The "bare" multiplicity corresponding to the energy deposited
981  Double_t edepMIP = param->GetEdepMip();
982  Float_t mult = edep / edepMIP;
983 #if 0
984  if (edep > 0)
985  AliFMDDebug(15, ("Translating energy %f to multiplicity via "
986  "divider %f->%f", edep, edepMIP, mult));
987 #endif
988  if (fDiagStep4) fDiagStep4->Fill(edep, mult);
989  return mult;
990 }
991 
992 //____________________________________________________________________
993 void
995  Char_t rng,
996  UShort_t sec,
997  UShort_t str,
998  Float_t& eta,
999  Float_t& phi) const
1000 {
1001  // Get the eta and phi of a digit
1002  //
1003  // Parameters:
1004  // det Detector ID
1005  // rng Ring ID
1006  // sec Sector ID
1007  // rng Strip ID
1008  // eta On return, contains the psuedo-rapidity of the strip
1009  // phi On return, contains the azimuthal angle of the strip
1010  //
1012  Double_t x, y, z, r, theta, deta, dphi;
1013  geom->Detector2XYZ(det, rng, sec, str, x, y, z);
1014 
1015  // Correct for vertex offset.
1016  z -= fCurrentVertex;
1017  AliFMDGeometry::XYZ2REtaPhiTheta(x, y, z, r, deta, dphi, theta);
1018  eta = deta;
1019  phi = dphi;
1020 }
1021 
1022 namespace {
1023  class ESDPrinter : public AliESDFMD::ForOne
1024  {
1025  public:
1026  ESDPrinter() {}
1027  Bool_t operator()(UShort_t d, Char_t r, UShort_t s, UShort_t t,
1028  Float_t m, Float_t e)
1029  {
1030  if (m > 0 && m != AliESDFMD::kInvalidMult)
1031  printf(" FMD%d%c[%2d,%3d] = %6.3f / %6.3f\n", d, r, s, t, m, e);
1032  return kTRUE;
1033  }
1034  };
1035 }
1036 
1037 
1038 //____________________________________________________________________
1039 void
1040 AliFMDReconstructor::FillESD(TTree* /* digitsTree */,
1041  TTree* /* clusterTree */,
1042  AliESDEvent* esd) const
1043 {
1044  // nothing to be done
1045  // FIXME: The vertex may not be known when Reconstruct is executed,
1046  // so we may have to move some of that member function here.
1047  AliFMDDebug(2, ("Calling FillESD with two trees and one ESD"));
1048  if (fZombie) {
1049  AliWarning("I'm a zombie - cannot do anything");
1050  return;
1051  }
1052  // fESDObj->Print();
1053 
1054  // Fix up ESD so that only truely dead channels get the kInvalidMult flag.
1056 
1057  Double_t oldVz = fCurrentVertex;
1058  GetVertex(esd);
1059  if (fVertexType != kNoVertex) {
1060  AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)",
1061  fCurrentVertex, oldVz));
1062  AliFMDESDRevertexer revertexer;
1063  revertexer.Revertex(fESDObj, fCurrentVertex);
1064  }
1065 
1066  if (AliDebugLevel() > 10) {
1067  ESDPrinter p;
1068  fESDObj->ForEach(p);
1069  }
1070 
1071  if (esd) {
1072  AliFMDDebug(2, ("Writing FMD data to ESD tree"));
1073  esd->SetFMDData(fESDObj);
1074  }
1075 
1076  if (!fDiagnostics || !esd) return;
1077  static bool first = true;
1078  // This is most likely NOT the event number you'd like to use. It
1079  // has nothing to do with the 'real' event number.
1080  // - That's OK. We just use it for the name of the directory -
1081  // nothing else. Christian
1082  Int_t evno = esd->GetEventNumberInFile();
1083  AliFMDDebug(3, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno));
1084  TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE"));
1085  first = false;
1086  f.cd();
1087  TDirectory* d = f.mkdir(Form("%03d", evno),
1088  Form("Diagnostics histograms for event # %d", evno));
1089  d->cd();
1090  if (fDiagStep1) fDiagStep1->Write();
1091  if (fDiagStep2) fDiagStep2->Write();
1092  if (fDiagStep3) fDiagStep3->Write();
1093  if (fDiagStep4) fDiagStep4->Write();
1094  if (fDiagAll) fDiagAll->Write();
1095  d->Write();
1096  f.Write();
1097  f.Close();
1098 
1099  if (fDiagStep1) fDiagStep1->Reset();
1100  if (fDiagStep2) fDiagStep2->Reset();
1101  if (fDiagStep3) fDiagStep3->Reset();
1102  if (fDiagStep4) fDiagStep4->Reset();
1103  if (fDiagAll) fDiagAll->Reset();
1104 }
1105 
1106 //____________________________________________________________________
1107 void
1108 AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree,
1109  AliESDEvent* esd) const
1110 {
1111  //
1112  // Forwards to above member function
1113  //
1114  if (fZombie) {
1115  AliWarning("I'm a zombie - cannot do anything");
1116  return;
1117  }
1118  TTree* dummy = 0;
1119  FillESD(dummy, clusterTree, esd);
1120 }
1121 //____________________________________________________________________
1122 //
1123 // EOF
1124 //
virtual void GetVertex(AliESDEvent *esd) const
class for digits
Definition: AliFMDDigit.h:28
Float_t GetDACPerMIP() const
Int_t NextSample(UShort_t &det, Char_t &rng, UShort_t &sec, UShort_t &str, UShort_t &sam, UShort_t &rat, Short_t &adc, Bool_t &zs, UShort_t &fac)
Reconstructed FMD points. It contains the pseudo-inclusive multiplicity.
virtual UShort_t SubtractPedestal(UShort_t det, Char_t rng, UShort_t sec, UShort_t str, UShort_t adc, Float_t noiseFactor, Bool_t zsEnabled, UShort_t zsNoiseFactor) const
printf("Chi2/npoints = %f\n", TMath::Sqrt(chi2/npoints))
Bool_t IsDead(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip) const
virtual void Reconstruct(TTree *digitsTree, TTree *clusterTree) const
Geometry mananger for the FMD.
virtual void UseRecoParam(Bool_t set=kTRUE) const
const AliFMDRecoParam * GetParameters() const
#define AliDebugLevel()
UShort_t NoiseFactor(UShort_t ddl) const
virtual void InitTransformations(Bool_t force=kFALSE)
Digits for the FMD.
UShort_t Sector() const
Char_t Ring() const
This class is a singleton that handles various parameters of the FMD detectors. This class reads from...
Manager of FMD parameters.
Float_t GetPulseGain(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip) const
virtual void PhysicalCoordinates(UShort_t det, Char_t rng, UShort_t sec, UShort_t str, Float_t &eta, Float_t &phi) const
Class to read ALTRO formated raw data from an AliRawReader object.
TFile f("CalibObjects.root")
UShort_t Detector2DDL(UShort_t det) const
AliFMDAltroMapping * GetAltroMap() const
Float_t GetEdepMip() const
virtual void FillESD(TTree *digitsTree, TTree *clusterTree, AliESDEvent *esd) const
ClassImp(AliFMDReconstructor) AliFMDReconstructor
Pseudo reconstructed charged particle multiplicity.
virtual void DigitizeSignal(TClonesArray *sdigits, UShort_t det, Char_t rng, UShort_t sec, UShort_t str, UShort_t sam, Short_t adc) const
Bool_t IsZeroSuppressed(UShort_t ddl) const
TObjArray * array
Definition: AnalyzeLaser.C:12
virtual Float_t Energy2Multiplicity(UShort_t det, Char_t rng, UShort_t sec, UShort_t str, Float_t edep) const
Double_t t
Definition: AliFMDv1.cxx:90
virtual void ConvertDigits(AliRawReader *reader, TTree *digitsTree) const
Map HW address to detector coordinates and back again.
virtual void ProcessSignal(UShort_t det, Char_t rng, UShort_t sec, UShort_t str, Short_t adc) const
Int_t NextSignal(UShort_t &det, Char_t &rng, UShort_t &sec, UShort_t &str, Short_t &adc, Bool_t &zs, UShort_t &fac)
Float_t NoiseFactor() const
This is a class that reconstructs AliFMDRecPoint objects from of Digits.
Bool_t PreReconstruct() const
Singleton object of FMD geometry descriptions and parameters. This class is a singleton that handles ...
virtual Float_t Adc2Energy(UShort_t det, Char_t rng, UShort_t sec, UShort_t str, UShort_t count) const
static Bool_t SelectSample(UShort_t samp, UShort_t rate)
Class that encodes a map to/from ALTRO hardware address to FMD detector coordinates.
UShort_t Strip() const
virtual Bool_t ReadAdcs(TClonesArray *array)
static AliFMDParameters * Instance()
void Detector2XYZ(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip, Double_t &x, Double_t &y, Double_t &z) const
virtual void Init()
Double_t theta
Definition: AliFMDv1.cxx:78
Class to read raw data.
static AliFMDGeometry * Instance()
Digits for the FMD.
static Bool_t XYZ2REtaPhiTheta(Double_t x, Double_t y, Double_t z, Double_t &r, Double_t &eta, Double_t &phi, Double_t &theta)
Bool_t Revertex(AliESDFMD *fmdEsd, Double_t vz) const
class for summable digits
Definition: AliFMDSDigit.h:27
Int_t det
Definition: AliFMDv1.cxx:70
Int_t str
Definition: AliFMDv1.cxx:83
virtual void ProcessDigit(AliFMDDigit *digit) const
virtual void Reset(const Bool_t &v=Bool_t())
Double_t phi
Definition: AliFMDv1.cxx:88
Bool_t AngleCorrect() const
UShort_t Detector() const
FMD reconstruction.
UShort_t Counts() const
Definition: AliFMDDigit.h:147
TEveGeoShape * geom
Definition: tpc_tracks.C:10
Float_t GetPedestal(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip) const
Float_t GetPedestalWidth(UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip) const
virtual void ProcessDigits(TClonesArray *digits, const AliFMDRawReader &rawRead) const
virtual void Digitize(AliRawReader *reader, TClonesArray *sdigits) const
Double_t r
Definition: AliFMDv1.cxx:82
UShort_t Init(Bool_t forceReInit=kFALSE, UInt_t what=kAll)
void MarkDeadChannels(AliESDFMD *esd) const
return kTRUE
Definition: AliFMDv1.cxx:97
AliFMDDebug(40,("<1> Inside an active FMD volume FMD%d%c[%2d,%3d] %s", detector, ring, sector, strip, mc->CurrentVolPath()))