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37c55dc0 | 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 | **************************************************************************/ | |
0d0e6995 | 15 | /* $Id$ */ |
c2fc1258 | 16 | /** @file AliFMDReconstructor.cxx |
17 | @author Christian Holm Christensen <cholm@nbi.dk> | |
18 | @date Mon Mar 27 12:47:09 2006 | |
19 | @brief FMD reconstruction | |
20 | */ | |
4347b38f | 21 | //____________________________________________________________________ |
42403906 | 22 | // |
02a27b50 | 23 | // This is a class that constructs AliFMDRecPoint objects from of Digits |
6169f936 | 24 | // This class reads either digits from a TClonesArray or raw data from |
4347b38f | 25 | // a DDL file (or similar), and stores the read ADC counts in an |
6169f936 | 26 | // internal cache (fAdcs). The rec-points are made via the naiive |
27 | // method. | |
4347b38f | 28 | // |
37c55dc0 | 29 | //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia |
4347b38f | 30 | // Latest changes by Christian Holm Christensen <cholm@nbi.dk> |
31 | // | |
32 | // | |
33 | //____________________________________________________________________ | |
37c55dc0 | 34 | |
f95a63c4 | 35 | // #include <AliLog.h> // ALILOG_H |
6169f936 | 36 | // #include <AliRun.h> // ALIRUN_H |
f95a63c4 | 37 | #include "AliFMDDebug.h" |
1a1fdef7 | 38 | #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H |
39 | #include "AliFMDParameters.h" // ALIFMDPARAMETERS_H | |
56b1929b | 40 | #include "AliFMDDigit.h" // ALIFMDDIGIT_H |
41 | #include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H | |
56b1929b | 42 | #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H |
bf000c32 | 43 | #include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H |
af885e0f | 44 | #include "AliESDEvent.h" // ALIESDEVENT_H |
aad72f45 | 45 | #include "AliESDVertex.h" // ALIESDVERTEX_H |
8f6ee336 | 46 | #include <AliESDFMD.h> // ALIESDFMD_H |
aad72f45 | 47 | #include <TMath.h> |
9684be2f | 48 | #include <TH1.h> |
49 | #include <TH2.h> | |
50 | #include <TFile.h> | |
02a27b50 | 51 | class AliRawReader; |
4347b38f | 52 | |
53 | //____________________________________________________________________ | |
925e6570 | 54 | ClassImp(AliFMDReconstructor) |
1a1fdef7 | 55 | #if 0 |
56 | ; // This is here to keep Emacs for indenting the next line | |
57 | #endif | |
37c55dc0 | 58 | |
4347b38f | 59 | //____________________________________________________________________ |
60 | AliFMDReconstructor::AliFMDReconstructor() | |
61 | : AliReconstructor(), | |
e9fd1e20 | 62 | fMult(0x0), |
63 | fNMult(0), | |
64 | fTreeR(0x0), | |
65 | fCurrentVertex(0), | |
66 | fESDObj(0x0), | |
9684be2f | 67 | fNoiseFactor(0), |
68 | fAngleCorrect(kTRUE), | |
69 | fVertexType(kNoVertex), | |
9684be2f | 70 | fESD(0x0), |
71 | fDiagnostics(kFALSE), | |
72 | fDiagStep1(0), | |
73 | fDiagStep2(0), | |
74 | fDiagStep3(0), | |
75 | fDiagStep4(0), | |
76 | fDiagAll(0) | |
4347b38f | 77 | { |
8f6ee336 | 78 | // Make a new FMD reconstructor object - default CTOR. |
a9579262 | 79 | SetNoiseFactor(); |
80 | SetAngleCorrect(); | |
4347b38f | 81 | } |
82 | ||
42403906 | 83 | |
84 | //____________________________________________________________________ | |
85 | AliFMDReconstructor::AliFMDReconstructor(const AliFMDReconstructor& other) | |
8f6ee336 | 86 | : AliReconstructor(), |
87 | fMult(other.fMult), | |
e9fd1e20 | 88 | fNMult(other.fNMult), |
89 | fTreeR(other.fTreeR), | |
90 | fCurrentVertex(other.fCurrentVertex), | |
91 | fESDObj(other.fESDObj), | |
a9579262 | 92 | fNoiseFactor(other.fNoiseFactor), |
9684be2f | 93 | fAngleCorrect(other.fAngleCorrect), |
94 | fVertexType(other.fVertexType), | |
9684be2f | 95 | fESD(other.fESD), |
96 | fDiagnostics(other.fDiagnostics), | |
97 | fDiagStep1(other.fDiagStep1), | |
98 | fDiagStep2(other.fDiagStep2), | |
99 | fDiagStep3(other.fDiagStep3), | |
100 | fDiagStep4(other.fDiagStep4), | |
101 | fDiagAll(other.fDiagAll) | |
42403906 | 102 | { |
56b1929b | 103 | // Copy constructor |
42403906 | 104 | } |
105 | ||
106 | ||
107 | //____________________________________________________________________ | |
108 | AliFMDReconstructor& | |
109 | AliFMDReconstructor::operator=(const AliFMDReconstructor& other) | |
110 | { | |
56b1929b | 111 | // Assignment operator |
a9579262 | 112 | fMult = other.fMult; |
113 | fNMult = other.fNMult; | |
114 | fTreeR = other.fTreeR; | |
e9fd1e20 | 115 | fCurrentVertex = other.fCurrentVertex; |
a9579262 | 116 | fESDObj = other.fESDObj; |
a9579262 | 117 | fNoiseFactor = other.fNoiseFactor; |
118 | fAngleCorrect = other.fAngleCorrect; | |
9684be2f | 119 | fVertexType = other.fVertexType; |
9684be2f | 120 | fESD = other.fESD; |
121 | fDiagnostics = other.fDiagnostics; | |
122 | fDiagStep1 = other.fDiagStep1; | |
123 | fDiagStep2 = other.fDiagStep2; | |
124 | fDiagStep3 = other.fDiagStep3; | |
125 | fDiagStep4 = other.fDiagStep4; | |
126 | fDiagAll = other.fDiagAll; | |
42403906 | 127 | return *this; |
128 | } | |
56b1929b | 129 | |
130 | //____________________________________________________________________ | |
131 | AliFMDReconstructor::~AliFMDReconstructor() | |
132 | { | |
133 | // Destructor | |
8f6ee336 | 134 | if (fMult) fMult->Delete(); |
135 | if (fMult) delete fMult; | |
136 | if (fESDObj) delete fESDObj; | |
56b1929b | 137 | } |
4347b38f | 138 | |
139 | //____________________________________________________________________ | |
140 | void | |
d76c31f4 | 141 | AliFMDReconstructor::Init() |
1a1fdef7 | 142 | { |
143 | // Initialize the reconstructor | |
f011bd38 | 144 | |
bf000c32 | 145 | // Initialize the geometry |
9b48326f | 146 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
147 | geom->Init(); | |
148 | geom->InitTransformations(); | |
149 | ||
150 | // Initialize the parameters | |
151 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
152 | param->Init(); | |
bf000c32 | 153 | |
8f6ee336 | 154 | // Current vertex position |
1a1fdef7 | 155 | fCurrentVertex = 0; |
8f6ee336 | 156 | // Create array of reconstructed strip multiplicities |
bf000c32 | 157 | fMult = new TClonesArray("AliFMDRecPoint", 51200); |
8f6ee336 | 158 | // Create ESD output object |
159 | fESDObj = new AliESDFMD; | |
160 | ||
9684be2f | 161 | // Check if we need diagnostics histograms |
162 | if (!fDiagnostics) return; | |
163 | fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC", | |
164 | 1024, -.5, 1023.5, 1024, -.5, 1023.5); | |
165 | fDiagStep1->SetDirectory(0); | |
166 | fDiagStep1->GetXaxis()->SetTitle("ADC (read)"); | |
167 | fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)", | |
168 | fNoiseFactor)); | |
169 | fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced", | |
170 | 1024, -.5, 1023.5, 100, 0, 2); | |
171 | fDiagStep2->SetDirectory(0); | |
172 | fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)"); | |
173 | fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]"); | |
174 | fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected", | |
175 | 100, 0., 2., 100, 0., 2.); | |
176 | fDiagStep3->SetDirectory(0); | |
177 | fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]"); | |
178 | fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
179 | fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced", | |
180 | 100, 0., 2., 100, -.1, 19.9); | |
181 | fDiagStep4->SetDirectory(0); | |
182 | fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
183 | fDiagStep4->GetYaxis()->SetTitle("Multiplicity"); | |
184 | fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced", | |
185 | 1024, -.5, 1023.5, 100, -.1, 19.9); | |
186 | fDiagAll->SetDirectory(0); | |
187 | fDiagAll->GetXaxis()->SetTitle("ADC (read)"); | |
188 | fDiagAll->GetYaxis()->SetTitle("Multiplicity"); | |
4347b38f | 189 | } |
dc8af42e | 190 | |
4347b38f | 191 | //____________________________________________________________________ |
192 | void | |
1a1fdef7 | 193 | AliFMDReconstructor::ConvertDigits(AliRawReader* reader, |
194 | TTree* digitsTree) const | |
195 | { | |
196 | // Convert Raw digits to AliFMDDigit's in a tree | |
f95a63c4 | 197 | AliFMDDebug(2, ("Reading raw data into digits tree")); |
1a1fdef7 | 198 | AliFMDRawReader rawRead(reader, digitsTree); |
199 | // rawRead.SetSampleRate(fFMD->GetSampleRate()); | |
200 | rawRead.Exec(); | |
4347b38f | 201 | } |
202 | ||
4347b38f | 203 | //____________________________________________________________________ |
204 | void | |
9684be2f | 205 | AliFMDReconstructor::GetVertex() const |
4347b38f | 206 | { |
97e94238 | 207 | // Return the vertex to use. |
208 | // This is obtained from the ESD object. | |
209 | // If not found, a warning is issued. | |
9684be2f | 210 | fVertexType = kNoVertex; |
211 | fCurrentVertex = 0; | |
a3537838 | 212 | if (fESD) { |
8f6ee336 | 213 | const AliESDVertex* vertex = fESD->GetVertex(); |
214 | if (vertex) { | |
f95a63c4 | 215 | AliFMDDebug(2, ("Got vertex from ESD: %f", vertex->GetZv())); |
8f6ee336 | 216 | fCurrentVertex = vertex->GetZv(); |
9684be2f | 217 | fVertexType = kESDVertex; |
218 | return; | |
8f6ee336 | 219 | } |
a3537838 | 220 | } |
9684be2f | 221 | AliWarning("Didn't get any vertex from ESD or generator"); |
222 | } | |
223 | ||
224 | ||
ddaa8027 | 225 | //____________________________________________________________________ |
226 | void | |
227 | AliFMDReconstructor::Reconstruct(AliRawReader* /*reader*/, TTree*) const | |
228 | { | |
229 | // Reconstruct directly from raw data (no intermediate output on | |
230 | // digit tree or rec point tree). | |
231 | // Parameters: | |
232 | // reader Raw event reader | |
233 | // ctree Not used. | |
234 | AliError("Method is not used"); | |
235 | #if 0 | |
236 | TClonesArray* array = new TClonesArray("AliFMDDigit"); | |
237 | AliFMDRawReader rawRead(reader, 0); | |
238 | rawRead.ReadAdcs(array); | |
239 | ProcessDigits(array); | |
240 | array->Delete(); | |
241 | delete array; | |
242 | #endif | |
243 | } | |
244 | ||
9684be2f | 245 | //____________________________________________________________________ |
246 | void | |
247 | AliFMDReconstructor::Reconstruct(TTree* digitsTree, | |
248 | TTree* clusterTree) const | |
249 | { | |
250 | // Reconstruct event from digits in tree | |
251 | // Get the FMD branch holding the digits. | |
252 | // FIXME: The vertex may not be known yet, so we may have to move | |
253 | // some of this to FillESD. | |
f95a63c4 | 254 | AliFMDDebug(2, ("Reconstructing from digits in a tree")); |
9684be2f | 255 | GetVertex(); |
256 | ||
1a1fdef7 | 257 | TBranch *digitBranch = digitsTree->GetBranch("FMD"); |
4347b38f | 258 | if (!digitBranch) { |
1a1fdef7 | 259 | Error("Exec", "No digit branch for the FMD found"); |
260 | return; | |
4347b38f | 261 | } |
0abe7182 | 262 | TClonesArray* digits = new TClonesArray("AliFMDDigit"); |
1a1fdef7 | 263 | digitBranch->SetAddress(&digits); |
4347b38f | 264 | |
8f6ee336 | 265 | if (fMult) fMult->Clear(); |
266 | if (fESDObj) fESDObj->Clear(); | |
267 | ||
268 | fNMult = 0; | |
269 | fTreeR = clusterTree; | |
270 | fTreeR->Branch("FMD", &fMult); | |
271 | ||
f95a63c4 | 272 | AliFMDDebug(5, ("Getting entry 0 from digit branch")); |
1a1fdef7 | 273 | digitBranch->GetEntry(0); |
274 | ||
f95a63c4 | 275 | AliFMDDebug(5, ("Processing digits")); |
e802be3e | 276 | ProcessDigits(digits); |
277 | ||
8f6ee336 | 278 | Int_t written = clusterTree->Fill(); |
f95a63c4 | 279 | AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); |
0abe7182 | 280 | digits->Delete(); |
281 | delete digits; | |
4347b38f | 282 | } |
1a1fdef7 | 283 | |
8f6ee336 | 284 | |
4347b38f | 285 | //____________________________________________________________________ |
e802be3e | 286 | void |
287 | AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const | |
4347b38f | 288 | { |
69b696b9 | 289 | // For each digit, find the pseudo rapdity, azimuthal angle, and |
290 | // number of corrected ADC counts, and pass it on to the algorithms | |
291 | // used. | |
e802be3e | 292 | Int_t nDigits = digits->GetEntries(); |
f95a63c4 | 293 | AliFMDDebug(1, ("Got %d digits", nDigits)); |
a9579262 | 294 | fESDObj->SetNoiseFactor(fNoiseFactor); |
295 | fESDObj->SetAngleCorrected(fAngleCorrect); | |
e802be3e | 296 | for (Int_t i = 0; i < nDigits; i++) { |
297 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
8f6ee336 | 298 | AliFMDParameters* param = AliFMDParameters::Instance(); |
299 | // Check that the strip is not marked as dead | |
300 | if (param->IsDead(digit->Detector(), digit->Ring(), | |
15b17c89 | 301 | digit->Sector(), digit->Strip())) { |
f95a63c4 | 302 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", digit->Detector(), |
15b17c89 | 303 | digit->Ring(), digit->Sector(), digit->Strip())); |
304 | continue; | |
305 | } | |
8f6ee336 | 306 | |
307 | // digit->Print(); | |
308 | // Get eta and phi | |
309 | Float_t eta, phi; | |
310 | PhysicalCoordinates(digit, eta, phi); | |
4347b38f | 311 | |
8f6ee336 | 312 | // Substract pedestal. |
e802be3e | 313 | UShort_t counts = SubtractPedestal(digit); |
4347b38f | 314 | |
8f6ee336 | 315 | // Gain match digits. |
316 | Double_t edep = Adc2Energy(digit, eta, counts); | |
317 | ||
318 | // Make rough multiplicity | |
319 | Double_t mult = Energy2Multiplicity(digit, edep); | |
320 | ||
f95a63c4 | 321 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d]: " |
8f6ee336 | 322 | "ADC: %d, Counts: %d, Energy: %f, Mult: %f", |
323 | digit->Detector(), digit->Ring(), digit->Sector(), | |
324 | digit->Strip(), digit->Counts(), counts, edep, mult)); | |
325 | ||
326 | // Create a `RecPoint' on the output branch. | |
69893a66 | 327 | if (fMult) { |
328 | AliFMDRecPoint* m = | |
329 | new ((*fMult)[fNMult]) AliFMDRecPoint(digit->Detector(), | |
330 | digit->Ring(), | |
331 | digit->Sector(), | |
332 | digit->Strip(), | |
333 | eta, phi, | |
334 | edep, mult); | |
335 | (void)m; // Suppress warnings about unused variables. | |
336 | fNMult++; | |
337 | } | |
338 | ||
8f6ee336 | 339 | fESDObj->SetMultiplicity(digit->Detector(), digit->Ring(), |
340 | digit->Sector(), digit->Strip(), mult); | |
341 | fESDObj->SetEta(digit->Detector(), digit->Ring(), | |
342 | digit->Sector(), digit->Strip(), eta); | |
9684be2f | 343 | |
344 | if (fDiagAll) fDiagAll->Fill(digit->Counts(), mult); | |
4347b38f | 345 | } |
4347b38f | 346 | } |
8f6ee336 | 347 | |
1a1fdef7 | 348 | //____________________________________________________________________ |
349 | UShort_t | |
350 | AliFMDReconstructor::SubtractPedestal(AliFMDDigit* digit) const | |
351 | { | |
352 | // Member function to subtract the pedestal from a digit | |
353 | // This implementation does nothing, but a derived class could over | |
354 | // load this to subtract a pedestal that was given in a database or | |
355 | // something like that. | |
356 | ||
8f6ee336 | 357 | Int_t counts = 0; |
9684be2f | 358 | Int_t adc = 0; |
8f6ee336 | 359 | AliFMDParameters* param = AliFMDParameters::Instance(); |
a9579262 | 360 | Float_t ped = param->GetPedestal(digit->Detector(), |
8f6ee336 | 361 | digit->Ring(), |
362 | digit->Sector(), | |
363 | digit->Strip()); | |
a9579262 | 364 | Float_t noise = param->GetPedestalWidth(digit->Detector(), |
365 | digit->Ring(), | |
366 | digit->Sector(), | |
367 | digit->Strip()); | |
f95a63c4 | 368 | AliFMDDebug(15, ("Subtracting pedestal %f from signal %d", |
a9579262 | 369 | ped, digit->Counts())); |
9684be2f | 370 | if (digit->Count3() > 0) adc = digit->Count3(); |
371 | else if (digit->Count2() > 0) adc = digit->Count2(); | |
372 | else adc = digit->Count1(); | |
373 | counts = TMath::Max(Int_t(adc - ped), 0); | |
a9579262 | 374 | if (counts < noise * fNoiseFactor) counts = 0; |
f95a63c4 | 375 | if (counts > 0) AliFMDDebug(15, ("Got a hit strip")); |
9684be2f | 376 | if (fDiagStep1) fDiagStep1->Fill(adc, counts); |
8f6ee336 | 377 | |
1a1fdef7 | 378 | return UShort_t(counts); |
379 | } | |
380 | ||
8f6ee336 | 381 | //____________________________________________________________________ |
382 | Float_t | |
383 | AliFMDReconstructor::Adc2Energy(AliFMDDigit* digit, | |
a9579262 | 384 | Float_t eta, |
8f6ee336 | 385 | UShort_t count) const |
386 | { | |
387 | // Converts number of ADC counts to energy deposited. | |
388 | // Note, that this member function can be overloaded by derived | |
389 | // classes to do strip-specific look-ups in databases or the like, | |
390 | // to find the proper gain for a strip. | |
391 | // | |
392 | // In this simple version, we calculate the energy deposited as | |
393 | // | |
394 | // EnergyDeposited = cos(theta) * gain * count | |
395 | // | |
396 | // where | |
397 | // | |
398 | // Pre_amp_MIP_Range | |
399 | // gain = ----------------- * Energy_deposited_per_MIP | |
400 | // ADC_channel_size | |
401 | // | |
402 | // is constant and the same for all strips. | |
a9579262 | 403 | if (count <= 0) return 0; |
8f6ee336 | 404 | AliFMDParameters* param = AliFMDParameters::Instance(); |
405 | Float_t gain = param->GetPulseGain(digit->Detector(), | |
406 | digit->Ring(), | |
407 | digit->Sector(), | |
408 | digit->Strip()); | |
f95a63c4 | 409 | AliFMDDebug(15, ("Converting counts %d to energy via factor %f", |
8f6ee336 | 410 | count, gain)); |
a9579262 | 411 | |
412 | Double_t edep = count * gain; | |
9684be2f | 413 | if (fDiagStep2) fDiagStep2->Fill(count, edep); |
a9579262 | 414 | if (fAngleCorrect) { |
9684be2f | 415 | Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); |
416 | Double_t corr = TMath::Abs(TMath::Cos(theta)); | |
417 | Double_t cedep = corr * edep; | |
f95a63c4 | 418 | AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", |
9684be2f | 419 | edep, corr, cedep, eta, theta)); |
420 | if (fDiagStep3) fDiagStep3->Fill(edep, cedep); | |
421 | edep = cedep; | |
a9579262 | 422 | } |
8f6ee336 | 423 | return edep; |
424 | } | |
425 | ||
426 | //____________________________________________________________________ | |
427 | Float_t | |
428 | AliFMDReconstructor::Energy2Multiplicity(AliFMDDigit* /* digit */, | |
429 | Float_t edep) const | |
430 | { | |
431 | // Converts an energy signal to number of particles. | |
432 | // Note, that this member function can be overloaded by derived | |
433 | // classes to do strip-specific look-ups in databases or the like, | |
434 | // to find the proper gain for a strip. | |
435 | // | |
436 | // In this simple version, we calculate the multiplicity as | |
437 | // | |
438 | // multiplicity = Energy_deposited / Energy_deposited_per_MIP | |
439 | // | |
440 | // where | |
441 | // | |
442 | // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness | |
443 | // | |
444 | // is constant and the same for all strips | |
445 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
446 | Double_t edepMIP = param->GetEdepMip(); | |
447 | Float_t mult = edep / edepMIP; | |
448 | if (edep > 0) | |
f95a63c4 | 449 | AliFMDDebug(15, ("Translating energy %f to multiplicity via " |
8f6ee336 | 450 | "divider %f->%f", edep, edepMIP, mult)); |
9684be2f | 451 | if (fDiagStep4) fDiagStep4->Fill(edep, mult); |
8f6ee336 | 452 | return mult; |
453 | } | |
454 | ||
455 | //____________________________________________________________________ | |
456 | void | |
457 | AliFMDReconstructor::PhysicalCoordinates(AliFMDDigit* digit, | |
458 | Float_t& eta, | |
459 | Float_t& phi) const | |
460 | { | |
461 | // Get the eta and phi of a digit | |
462 | // | |
463 | // Get geometry. | |
9b48326f | 464 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
bf000c32 | 465 | Double_t x, y, z, r, theta; |
9b48326f | 466 | geom->Detector2XYZ(digit->Detector(), digit->Ring(), digit->Sector(), |
bf000c32 | 467 | digit->Strip(), x, y, z); |
468 | // Correct for vertex offset. | |
469 | z += fCurrentVertex; | |
470 | phi = TMath::ATan2(y, x); | |
471 | r = TMath::Sqrt(y * y + x * x); | |
472 | theta = TMath::ATan2(r, z); | |
473 | eta = -TMath::Log(TMath::Tan(theta / 2)); | |
8f6ee336 | 474 | } |
475 | ||
476 | ||
477 | ||
4347b38f | 478 | //____________________________________________________________________ |
479 | void | |
1a1fdef7 | 480 | AliFMDReconstructor::FillESD(TTree* /* digitsTree */, |
481 | TTree* /* clusterTree */, | |
af885e0f | 482 | AliESDEvent* esd) const |
121a60bd | 483 | { |
42403906 | 484 | // nothing to be done |
69b696b9 | 485 | // FIXME: The vertex may not be known when Reconstruct is executed, |
486 | // so we may have to move some of that member function here. | |
f95a63c4 | 487 | AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); |
8f6ee336 | 488 | // fESDObj->Print(); |
489 | ||
490 | if (esd) { | |
f95a63c4 | 491 | AliFMDDebug(2, ("Writing FMD data to ESD tree")); |
8f6ee336 | 492 | esd->SetFMDData(fESDObj); |
a3537838 | 493 | } |
9684be2f | 494 | |
495 | if (!fDiagnostics || !esd) return; | |
496 | static bool first = true; | |
69893a66 | 497 | // This is most likely NOT the event number you'd like to use. It |
498 | // has nothing to do with the 'real' event number. | |
499 | // - That's OK. We just use it for the name of the directory - | |
500 | // nothing else. Christian | |
501 | Int_t evno = esd->GetEventNumberInFile(); | |
502 | AliFMDDebug(1, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); | |
9684be2f | 503 | TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); |
504 | first = false; | |
505 | f.cd(); | |
506 | TDirectory* d = f.mkdir(Form("%03d", evno), | |
507 | Form("Diagnostics histograms for event # %d", evno)); | |
508 | d->cd(); | |
509 | if (fDiagStep1) fDiagStep1->Write(); | |
510 | if (fDiagStep2) fDiagStep2->Write(); | |
511 | if (fDiagStep3) fDiagStep3->Write(); | |
512 | if (fDiagStep4) fDiagStep4->Write(); | |
513 | if (fDiagAll) fDiagAll->Write(); | |
514 | d->Write(); | |
515 | f.Write(); | |
516 | f.Close(); | |
517 | ||
518 | if (fDiagStep1) fDiagStep1->Reset(); | |
519 | if (fDiagStep2) fDiagStep2->Reset(); | |
520 | if (fDiagStep3) fDiagStep3->Reset(); | |
521 | if (fDiagStep4) fDiagStep4->Reset(); | |
522 | if (fDiagAll) fDiagAll->Reset(); | |
121a60bd | 523 | } |
524 | ||
ddaa8027 | 525 | //____________________________________________________________________ |
526 | void | |
527 | AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, | |
528 | AliESDEvent* esd) const | |
529 | { | |
530 | TTree* dummy = 0; | |
531 | FillESD(dummy, clusterTree, esd); | |
532 | } | |
533 | ||
42403906 | 534 | //____________________________________________________________________ |
535 | // | |
536 | // EOF | |
537 | // |