1 //____________________________________________________________________
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
9 //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia
10 // Latest changes by Christian Holm Christensen <cholm@nbi.dk>
13 //____________________________________________________________________
14 /**************************************************************************
15 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
17 * Author: The ALICE Off-line Project. *
18 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
30 * @file AliFMDReconstructor.cxx
31 * @author Christian Holm Christensen <cholm@nbi.dk>
32 * @date Mon Mar 27 12:47:09 2006
33 * @brief FMD reconstruction
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
57 #include "AliFMDESDRevertexer.h"
62 //____________________________________________________________________
63 ClassImp(AliFMDReconstructor)
65 ; // This is here to keep Emacs for indenting the next line
68 //____________________________________________________________________
69 AliFMDReconstructor::AliFMDReconstructor()
78 fVertexType(kNoVertex),
88 // Make a new FMD reconstructor object - default CTOR.
91 if (AliDebugLevel() > 0) fDiagnostics = kTRUE;
92 for(Int_t det = 1; det<=3; det++) {
98 //____________________________________________________________________
99 AliFMDReconstructor::~AliFMDReconstructor()
102 if (fMult) fMult->Delete();
103 if (fMult) delete fMult;
104 if (fESDObj) delete fESDObj;
107 //____________________________________________________________________
109 AliFMDReconstructor::Init()
111 // Initialize the reconstructor
113 // Initialize the geometry
114 AliFMDGeometry* geom = AliFMDGeometry::Instance();
116 geom->InitTransformations();
118 // Initialize the parameters
119 AliFMDParameters* param = AliFMDParameters::Instance();
122 // Current vertex position
124 // Create array of reconstructed strip multiplicities
125 // fMult = new TClonesArray("AliFMDRecPoint", 51200);
126 // Create ESD output object
127 fESDObj = new AliESDFMD;
129 // Check if we need diagnostics histograms
130 if (!fDiagnostics) return;
131 AliInfo("Making diagnostics histograms");
132 fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC",
133 1024, -.5, 1023.5, 1024, -.5, 1023.5);
134 fDiagStep1->SetDirectory(0);
135 fDiagStep1->GetXaxis()->SetTitle("ADC (read)");
136 fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)",
138 fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced",
139 1024, -.5, 1023.5, 100, 0, 2);
140 fDiagStep2->SetDirectory(0);
141 fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)");
142 fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]");
143 fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected",
144 100, 0., 2., 100, 0., 2.);
145 fDiagStep3->SetDirectory(0);
146 fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]");
147 fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]");
148 fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced",
149 100, 0., 2., 100, -.1, 19.9);
150 fDiagStep4->SetDirectory(0);
151 fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]");
152 fDiagStep4->GetYaxis()->SetTitle("Multiplicity");
153 fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced",
154 1024, -.5, 1023.5, 100, -.1, 19.9);
155 fDiagAll->SetDirectory(0);
156 fDiagAll->GetXaxis()->SetTitle("ADC (read)");
157 fDiagAll->GetYaxis()->SetTitle("Multiplicity");
160 //____________________________________________________________________
162 AliFMDReconstructor::ConvertDigits(AliRawReader* reader,
163 TTree* digitsTree) const
165 // Convert Raw digits to AliFMDDigit's in a tree
166 AliFMDDebug(1, ("Reading raw data into digits tree"));
168 AliError("No digits tree passed");
171 static TClonesArray* array = new TClonesArray("AliFMDDigit");
172 digitsTree->Branch("FMD", &array);
175 AliFMDRawReader rawRead(reader, digitsTree);
176 // rawRead.SetSampleRate(fFMD->GetSampleRate());
178 rawRead.ReadAdcs(array);
180 Int_t nWrite = digitsTree->Fill();
181 AliFMDDebug(1, ("Got a grand total of %d digits, wrote %d bytes to tree",
182 array->GetEntriesFast(), nWrite));
185 AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap();
186 for (size_t i = 1; i <= 3; i++) {
187 fZS[i-1] = rawRead.IsZeroSuppressed(map->Detector2DDL(i));
188 fZSFactor[i-1] = rawRead.NoiseFactor(map->Detector2DDL(i));
192 //____________________________________________________________________
194 AliFMDReconstructor::GetVertex(AliESDEvent* esd) const
196 // Return the vertex to use.
197 // This is obtained from the ESD object.
198 // If not found, a warning is issued.
199 fVertexType = kNoVertex;
203 const AliESDVertex* vertex = esd->GetPrimaryVertex();
204 if (!vertex) vertex = esd->GetPrimaryVertexSPD();
205 if (!vertex) vertex = esd->GetPrimaryVertexTPC();
206 if (!vertex) vertex = esd->GetVertex();
209 AliFMDDebug(2, ("Got %s (%s) from ESD: %f",
210 vertex->GetName(), vertex->GetTitle(), vertex->GetZv()));
211 fCurrentVertex = vertex->GetZv();
212 fVertexType = kESDVertex;
215 else if (esd->GetESDTZERO()) {
216 AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex()));
217 fCurrentVertex = esd->GetT0zVertex();
218 fVertexType = kESDVertex;
221 AliWarning("Didn't get any vertex from ESD or generator");
224 //____________________________________________________________________
226 AliFMDReconstructor::GetIdentifier() const
228 // Get the detector identifier.
229 // Note the actual value is cached so that we do not
230 // need to do many expensive string comparisons.
231 static Int_t idx = AliReconstruction::GetDetIndex(GetDetectorName());
235 //____________________________________________________________________
236 const AliFMDRecoParam*
237 AliFMDReconstructor::GetParameters() const
239 // Get the reconstruction parameters.
242 // Pointer to reconstruction parameters or null if not found or wrong type
243 Int_t iDet = GetIdentifier(); // Was 12 - but changed on Cvetans request
244 const AliDetectorRecoParam* params = AliReconstructor::GetRecoParam(iDet);
245 if (!params || params->IsA() != AliFMDRecoParam::Class()) return 0;
246 return static_cast<const AliFMDRecoParam*>(params);
249 //____________________________________________________________________
251 AliFMDReconstructor::UseRecoParam(Bool_t set) const
254 // Set-up reconstructor to use values from reconstruction
255 // parameters, if present, for this event. If the argument @a set
256 // is @c false, then restore preset values.
261 static Float_t savedNoiseFactor = fNoiseFactor;
262 static Bool_t savedAngleCorrect = fAngleCorrect;
264 const AliFMDRecoParam* params = GetParameters();
266 fNoiseFactor = params->NoiseFactor();
267 fAngleCorrect = params->AngleCorrect();
271 fNoiseFactor = savedNoiseFactor;
272 fAngleCorrect = savedAngleCorrect;
276 //____________________________________________________________________
278 AliFMDReconstructor::MarkDeadChannels(AliESDFMD* esd) const
280 // Loop over all entries of the ESD and mark
281 // those that are dead as such
282 // - otherwise put in the zero signal.
283 AliFMDParameters* param = AliFMDParameters::Instance();
285 for (UShort_t d = 1; d <= 3; d++) {
286 UShort_t nR = (d == 1 ? 1 : 2);
288 for (UShort_t q = 0; q < nR; q++) {
289 Char_t r = (q == 0 ? 'I' : 'O');
290 UShort_t nS = (q == 0 ? 20 : 40);
291 UShort_t nT = (q == 0 ? 512 : 256);
293 for (UShort_t s = 0; s < nS; s++) {
294 for (UShort_t t = 0; t < nT; t++) {
295 if (fBad(d, r, s, t)) {
296 AliDebug(5, Form("Marking FMD%d%c[%2d,%3d] as bad", d, r, s, t));
297 esd->SetMultiplicity(d, r, s, t, AliESDFMD::kInvalidMult);
299 if (param->IsDead(d, r, s, t)) {
300 AliDebug(5, Form("Marking FMD%d%c[%2d,%3d] as dead", d, r, s, t));
301 esd->SetMultiplicity(d, r, s, t, AliESDFMD::kInvalidMult);
302 // esd->SetEta(d, r, s, t, AliESDFMD::kInvalidEta);
304 else if (esd->Multiplicity(d, r, s, t) == AliESDFMD::kInvalidMult) {
305 AliDebug(10, Form("Setting null signal in FMD%d%c[%2d,%3d]",
307 esd->SetMultiplicity(d, r, s, t, 0);
315 //____________________________________________________________________
317 AliFMDReconstructor::Reconstruct(AliFMDRawReader& rawReader) const
319 AliFMDDebug(1, ("Reconstructing from FMD raw reader"));
321 UShort_t det, sec, str, fac;
322 Short_t adc, oldDet = -1;
327 while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) {
330 fZSFactor[det-1] = fac;
333 ProcessSignal(det, rng, sec, str, adc);
335 UseRecoParam(kFALSE);
339 //____________________________________________________________________
341 AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const
343 // Reconstruct directly from raw data (no intermediate output on
344 // digit tree or rec point tree).
347 // reader Raw event reader
348 // ctree Not used - 'cluster tree' to store rec-points in.
349 AliFMDDebug(1, ("Reconstructing from raw reader"));
350 AliFMDRawReader rawReader(reader, 0);
351 Reconstruct(rawReader);
354 //____________________________________________________________________
356 AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) const
358 // Reconstruct directly from raw data (no intermediate output on
359 // digit tree or rec point tree).
362 // reader Raw event reader
364 AliFMDRawReader rawReader(reader, 0);
366 UShort_t det, sec, str, sam, rat, fac;
367 Short_t adc, oldDet = -1;
372 while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) {
373 if (!rawReader.SelectSample(sam, rat)) continue;
376 fZSFactor[det-1] = fac;
379 DigitizeSignal(sdigits, det, rng, sec, str, sam, adc);
381 UseRecoParam(kFALSE);
384 //____________________________________________________________________
386 AliFMDReconstructor::Reconstruct(TTree* digitsTree,
387 TTree* clusterTree) const
389 // Reconstruct event from digits in tree
390 // Get the FMD branch holding the digits.
391 // FIXME: The vertex may not be known yet, so we may have to move
392 // some of this to FillESD.
395 // digitsTree Pointer to a tree containing digits
396 // clusterTree Pointer to output tree
398 if (!fMult) fMult = new TClonesArray("AliFMDRecPoint");
400 AliFMDDebug(1, ("Reconstructing from digits in a tree"));
405 static TClonesArray* digits = new TClonesArray("AliFMDDigit");
406 TBranch* digitBranch = digitsTree->GetBranch("FMD");
408 Error("Exec", "No digit branch for the FMD found");
411 digitBranch->SetAddress(&digits);
413 if (digits) digits->Clear();
414 if (fMult) fMult->Clear();
415 if (fESDObj) fESDObj->Clear();
418 fTreeR = clusterTree;
419 fTreeR->Branch("FMD", &fMult);
421 AliFMDDebug(5, ("Getting entry 0 from digit branch"));
422 digitBranch->GetEntry(0);
424 AliFMDDebug(5, ("Processing digits"));
426 ProcessDigits(digits);
427 UseRecoParam(kFALSE);
429 Int_t written = clusterTree->Fill();
430 AliFMDDebug(10, ("Filled %d bytes into cluster tree", written));
436 //____________________________________________________________________
438 AliFMDReconstructor::ProcessDigits(TClonesArray* digits,
439 const AliFMDRawReader& rawRead) const
441 // For each digit, find the pseudo rapdity, azimuthal angle, and
442 // number of corrected ADC counts, and pass it on to the algorithms
446 // digits Array of digits
448 AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap();
449 for (size_t i = 1; i <= 3; i++) {
450 fZS[i-1] = rawRead.IsZeroSuppressed(map->Detector2DDL(i));
451 fZSFactor[i-1] = rawRead.NoiseFactor(map->Detector2DDL(i));
454 ProcessDigits(digits);
455 UseRecoParam(kFALSE);
458 //____________________________________________________________________
460 AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const
462 // For each digit, find the pseudo rapdity, azimuthal angle, and
463 // number of corrected ADC counts, and pass it on to the algorithms
467 // digits Array of digits
469 Int_t nDigits = digits->GetEntries();
470 AliFMDDebug(2, ("Got %d digits", nDigits));
471 fESDObj->SetNoiseFactor(fNoiseFactor);
472 fESDObj->SetAngleCorrected(fAngleCorrect);
474 for (Int_t i = 0; i < nDigits; i++) {
475 AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i));
476 if (!digit) continue;
481 //____________________________________________________________________
483 AliFMDReconstructor::ProcessDigit(AliFMDDigit* digit) const
486 // Process a single digit
489 // digit Digiti to process
491 UShort_t det = digit->Detector();
492 Char_t rng = digit->Ring();
493 UShort_t sec = digit->Sector();
494 UShort_t str = digit->Strip();
495 Short_t adc = digit->Counts();
497 ProcessSignal(det, rng, sec, str, adc);
500 //____________________________________________________________________
502 AliFMDReconstructor::ProcessSignal(UShort_t det,
508 // Process the signal from a single strip
517 if (adc >= AliFMDRawReader::kBadSignal) {
518 AliFMDDebug(1, ("FMD%d%c[%2d,%3d] is marked bad", det, rng, sec, str));
519 fBad(det,rng,sec,str) = true;
523 // Check that the strip is not marked as dead
524 AliFMDParameters* param = AliFMDParameters::Instance();
525 if (param->IsDead(det, rng, sec, str)) {
526 AliFMDDebug(1, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str));
527 fBad(det,rng,sec,str) = true;
534 PhysicalCoordinates(det, rng, sec, str, eta, phi);
536 // Substract pedestal.
537 UShort_t counts = SubtractPedestal(det, rng, sec, str, adc);
538 if(counts == USHRT_MAX) return;
540 // Gain match digits.
541 Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts);
542 // Get rid of nonsense energy
545 // Make rough multiplicity
546 Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep);
547 // Get rid of nonsense mult
549 // AliWarning(Form("The mutliplicity in FMD%d%c[%2d,%3d]=%f > 20 "
550 // "(ADC: %d, Energy: %f)", det, rng, sec, str, mult,
553 if (mult < 0) return;
554 AliFMDDebug(10, ("FMD%d%c[%2d,%3d]: "
555 "ADC: %d, Counts: %d, Energy: %f, Mult: %f",
556 det, rng, sec, str, adc, counts, edep, mult));
558 // Create a `RecPoint' on the output branch.
561 new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str,
562 eta, phi, edep, mult);
563 (void)m; // Suppress warnings about unused variables.
567 fESDObj->SetMultiplicity(det, rng, sec, str, mult);
568 fESDObj->SetEta(det, rng, sec, str, eta);
570 if (fDiagAll) fDiagAll->Fill(adc, mult);
574 //____________________________________________________________________
576 AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits,
584 // Process the signal from a single strip
593 AliFMDParameters* param = AliFMDParameters::Instance();
594 // Check that the strip is not marked as dead
595 if (param->IsDead(det, rng, sec, str)) {
596 AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str));
600 // Substract pedestal.
601 UShort_t counts = SubtractPedestal(det, rng, sec, str, adc);
602 if(counts == USHRT_MAX || counts == 0) return;
604 // Gain match digits.
605 Double_t edep = Adc2Energy(det, rng, sec, str, counts);
606 // Get rid of nonsense energy
609 Int_t n = sdigits->GetEntriesFast();
610 // AliFMDSDigit* sdigit =
612 AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts);
613 // sdigit->SetCount(sam, counts);
616 //____________________________________________________________________
618 AliFMDReconstructor::SubtractPedestal(UShort_t det,
625 UShort_t zsNoiseFactor) const
628 // Subtract the pedestal off the ADC counts.
631 // det Detector number
632 // rng Ring identifier
636 // noiseFactor If pedestal substracted pedestal is less then
637 // this times the noise, then consider this to be 0.
638 // zsEnabled Whether zero-suppression is on.
639 // zsNoiseFactor Noise factor used in on-line pedestal
643 // The pedestal subtracted ADC counts (possibly 0), or @c
644 // USHRT_MAX in case of problems.
646 AliFMDParameters* param = AliFMDParameters::Instance();
647 Float_t ped = (zsEnabled ? 0 :
648 param->GetPedestal(det, rng, sec, str));
649 Float_t noise = param->GetPedestalWidth(det, rng, sec, str);
650 if(ped < 0 || noise < 0) {
651 AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) "
652 "for FMD%d%c[%02d,%03d]",
653 ped, noise, det, rng, sec, str));
656 AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d "
657 "(%s w/factor %d, noise factor %f, "
658 "pedestal %8.2f+/-%8.2f)",
659 det, rng, sec, str, adc,
660 (zsEnabled ? "zs'ed" : "straight"),
661 zsNoiseFactor, noiseFactor, ped, noise));
663 Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped);
664 counts = TMath::Max(Int_t(counts), 0);
665 // Calculate the noise factor for suppressing remenants of the noise
666 // peak. If we have done on-line zero suppression, we only check
667 // for noise signals that are larger than the suppressed noise. If
668 // the noise factor used on line is larger than the factor used
669 // here, we do not do this check at all.
672 // Online factor | Read factor | Result
673 // ---------------+--------------+-------------------------------
674 // 2 | 3 | Check if signal > 1 * noise
675 // 3 | 3 | Check if signal > 0
676 // 3 | 2 | Check if signal > 0
678 // In this way, we make sure that we do not suppress away too much
679 // data, and that the read-factor is the most stringent cut.
680 Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0));
681 if (counts < noise * nf) counts = 0;
682 if (counts > 0) AliDebugClass(15, "Got a hit strip");
684 UShort_t ret = counts < 0 ? 0 : counts;
689 //____________________________________________________________________
691 AliFMDReconstructor::SubtractPedestal(UShort_t det,
697 // Member function to subtract the pedestal from a digit
704 // adc # of ADC counts
706 // Pedestal subtracted signal or USHRT_MAX in case of problems
708 UShort_t counts = SubtractPedestal(det, rng, sec, str, adc,
709 fNoiseFactor, fZS[det-1],
711 if (fDiagStep1) fDiagStep1->Fill(adc, counts);
716 //____________________________________________________________________
718 AliFMDReconstructor::Adc2Energy(UShort_t det,
722 UShort_t count) const
724 // Converts number of ADC counts to energy deposited.
725 // Note, that this member function can be overloaded by derived
726 // classes to do strip-specific look-ups in databases or the like,
727 // to find the proper gain for a strip.
729 // In the first simple version, we calculate the energy deposited as
731 // EnergyDeposited = cos(theta) * gain * count
736 // gain = ----------------- * Energy_deposited_per_MIP
739 // is constant and the same for all strips.
741 // For the production we use the conversion measured in the NBI lab.
742 // The total conversion is then:
747 // => energy = ----------------
755 // counts Number of ADC counts over pedestal
757 // The energy deposited in a single strip, or -1 in case of problems
759 if (count <= 0) return 0;
760 AliFMDParameters* param = AliFMDParameters::Instance();
761 Float_t gain = param->GetPulseGain(det, rng, sec, str);
762 // 'Tagging' bad gains as bad energy
764 AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]",
765 gain, det, rng, sec, str));
768 AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)",
769 count, gain,param->GetDACPerMIP()));
771 Double_t edep = ((count * param->GetEdepMip())
772 / (gain * param->GetDACPerMIP()));
776 //____________________________________________________________________
778 AliFMDReconstructor::Adc2Energy(UShort_t det,
783 UShort_t count) const
785 // Converts number of ADC counts to energy deposited.
786 // Note, that this member function can be overloaded by derived
787 // classes to do strip-specific look-ups in databases or the like,
788 // to find the proper gain for a strip.
790 // In the first simple version, we calculate the energy deposited as
792 // EnergyDeposited = cos(theta) * gain * count
797 // gain = ----------------- * Energy_deposited_per_MIP
800 // is constant and the same for all strips.
802 // For the production we use the conversion measured in the NBI lab.
803 // The total conversion is then:
808 // => energy = ----------------
816 // eta Psuedo-rapidity
817 // counts Number of ADC counts over pedestal
819 // The energy deposited in a single strip, or -1 in case of problems
821 Double_t edep = Adc2Energy(det, rng, sec, str, count);
823 if (fDiagStep2) fDiagStep2->Fill(count, edep);
825 Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta));
826 Double_t corr = TMath::Abs(TMath::Cos(theta));
827 Double_t cedep = corr * edep;
828 AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)",
829 edep, corr, cedep, eta, theta));
830 if (fDiagStep3) fDiagStep3->Fill(edep, cedep);
836 //____________________________________________________________________
838 AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/,
844 // Converts an energy signal to number of particles.
845 // Note, that this member function can be overloaded by derived
846 // classes to do strip-specific look-ups in databases or the like,
847 // to find the proper gain for a strip.
849 // In this simple version, we calculate the multiplicity as
851 // multiplicity = Energy_deposited / Energy_deposited_per_MIP
855 // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness
857 // is constant and the same for all strips
864 // edep Energy deposited in a single strip
866 // The "bare" multiplicity corresponding to the energy deposited
867 AliFMDParameters* param = AliFMDParameters::Instance();
868 Double_t edepMIP = param->GetEdepMip();
869 Float_t mult = edep / edepMIP;
872 AliFMDDebug(15, ("Translating energy %f to multiplicity via "
873 "divider %f->%f", edep, edepMIP, mult));
875 if (fDiagStep4) fDiagStep4->Fill(edep, mult);
879 //____________________________________________________________________
881 AliFMDReconstructor::PhysicalCoordinates(UShort_t det,
888 // Get the eta and phi of a digit
895 // eta On return, contains the psuedo-rapidity of the strip
896 // phi On return, contains the azimuthal angle of the strip
898 AliFMDGeometry* geom = AliFMDGeometry::Instance();
899 Double_t x, y, z, r, theta, deta, dphi;
900 geom->Detector2XYZ(det, rng, sec, str, x, y, z);
902 // Correct for vertex offset.
904 AliFMDGeometry::XYZ2REtaPhiTheta(x, y, z, r, deta, dphi, theta);
910 class ESDPrinter : public AliESDFMD::ForOne
914 Bool_t operator()(UShort_t d, Char_t r, UShort_t s, UShort_t t,
915 Float_t m, Float_t e)
917 if (m > 0 && m != AliESDFMD::kInvalidMult)
918 printf(" FMD%d%c[%2d,%3d] = %6.3f / %6.3f\n", d, r, s, t, m, e);
925 //____________________________________________________________________
927 AliFMDReconstructor::FillESD(TTree* /* digitsTree */,
928 TTree* /* clusterTree */,
929 AliESDEvent* esd) const
931 // nothing to be done
932 // FIXME: The vertex may not be known when Reconstruct is executed,
933 // so we may have to move some of that member function here.
934 AliFMDDebug(2, ("Calling FillESD with two trees and one ESD"));
937 // Fix up ESD so that only truely dead channels get the kInvalidMult flag.
938 MarkDeadChannels(fESDObj);
940 Double_t oldVz = fCurrentVertex;
942 if (fVertexType != kNoVertex) {
943 AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)",
944 fCurrentVertex, oldVz));
945 AliFMDESDRevertexer revertexer;
946 revertexer.Revertex(fESDObj, fCurrentVertex);
949 if (AliDebugLevel() > 10) {
955 AliFMDDebug(2, ("Writing FMD data to ESD tree"));
956 esd->SetFMDData(fESDObj);
959 if (!fDiagnostics || !esd) return;
960 static bool first = true;
961 // This is most likely NOT the event number you'd like to use. It
962 // has nothing to do with the 'real' event number.
963 // - That's OK. We just use it for the name of the directory -
964 // nothing else. Christian
965 Int_t evno = esd->GetEventNumberInFile();
966 AliFMDDebug(3, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno));
967 TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE"));
970 TDirectory* d = f.mkdir(Form("%03d", evno),
971 Form("Diagnostics histograms for event # %d", evno));
973 if (fDiagStep1) fDiagStep1->Write();
974 if (fDiagStep2) fDiagStep2->Write();
975 if (fDiagStep3) fDiagStep3->Write();
976 if (fDiagStep4) fDiagStep4->Write();
977 if (fDiagAll) fDiagAll->Write();
982 if (fDiagStep1) fDiagStep1->Reset();
983 if (fDiagStep2) fDiagStep2->Reset();
984 if (fDiagStep3) fDiagStep3->Reset();
985 if (fDiagStep4) fDiagStep4->Reset();
986 if (fDiagAll) fDiagAll->Reset();
989 //____________________________________________________________________
991 AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree,
992 AliESDEvent* esd) const
995 // Forwards to above member function
998 FillESD(dummy, clusterTree, esd);
1000 //____________________________________________________________________