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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 | |
5cf05dbb | 40 | #include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H |
56b1929b | 41 | #include "AliFMDDigit.h" // ALIFMDDIGIT_H |
faf80567 | 42 | #include "AliFMDSDigit.h" // ALIFMDDIGIT_H |
56b1929b | 43 | #include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H |
56b1929b | 44 | #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H |
bf000c32 | 45 | #include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H |
af885e0f | 46 | #include "AliESDEvent.h" // ALIESDEVENT_H |
aad72f45 | 47 | #include "AliESDVertex.h" // ALIESDVERTEX_H |
50b9d194 | 48 | #include "AliESDTZERO.h" // ALIESDVERTEX_H |
8f6ee336 | 49 | #include <AliESDFMD.h> // ALIESDFMD_H |
aad72f45 | 50 | #include <TMath.h> |
9684be2f | 51 | #include <TH1.h> |
52 | #include <TH2.h> | |
53 | #include <TFile.h> | |
68aba90a | 54 | #include <climits> |
50b9d194 | 55 | // Import revertexer into a private namespace (to prevent conflicts) |
56 | namespace { | |
57 | # include "AliFMDESDRevertexer.h" | |
58 | } | |
59 | ||
68aba90a | 60 | |
02a27b50 | 61 | class AliRawReader; |
4347b38f | 62 | |
63 | //____________________________________________________________________ | |
925e6570 | 64 | ClassImp(AliFMDReconstructor) |
1a1fdef7 | 65 | #if 0 |
66 | ; // This is here to keep Emacs for indenting the next line | |
67 | #endif | |
37c55dc0 | 68 | |
4347b38f | 69 | //____________________________________________________________________ |
70 | AliFMDReconstructor::AliFMDReconstructor() | |
71 | : AliReconstructor(), | |
e9fd1e20 | 72 | fMult(0x0), |
73 | fNMult(0), | |
74 | fTreeR(0x0), | |
75 | fCurrentVertex(0), | |
76 | fESDObj(0x0), | |
9684be2f | 77 | fNoiseFactor(0), |
78 | fAngleCorrect(kTRUE), | |
79 | fVertexType(kNoVertex), | |
9684be2f | 80 | fESD(0x0), |
68aba90a | 81 | fDiagnostics(kTRUE), |
9684be2f | 82 | fDiagStep1(0), |
83 | fDiagStep2(0), | |
84 | fDiagStep3(0), | |
85 | fDiagStep4(0), | |
86 | fDiagAll(0) | |
4347b38f | 87 | { |
8f6ee336 | 88 | // Make a new FMD reconstructor object - default CTOR. |
a9579262 | 89 | SetNoiseFactor(); |
90 | SetAngleCorrect(); | |
9b98d361 | 91 | if (AliDebugLevel() > 0) fDiagnostics = kTRUE; |
030d93c1 | 92 | for(Int_t det = 1; det<=3; det++) { |
93 | fZS[det-1] = kFALSE; | |
94 | fZSFactor[det-1] = 0; | |
95 | } | |
4347b38f | 96 | } |
97 | ||
42403906 | 98 | |
99 | //____________________________________________________________________ | |
100 | AliFMDReconstructor::AliFMDReconstructor(const AliFMDReconstructor& other) | |
8f6ee336 | 101 | : AliReconstructor(), |
102 | fMult(other.fMult), | |
e9fd1e20 | 103 | fNMult(other.fNMult), |
104 | fTreeR(other.fTreeR), | |
105 | fCurrentVertex(other.fCurrentVertex), | |
106 | fESDObj(other.fESDObj), | |
a9579262 | 107 | fNoiseFactor(other.fNoiseFactor), |
9684be2f | 108 | fAngleCorrect(other.fAngleCorrect), |
109 | fVertexType(other.fVertexType), | |
9684be2f | 110 | fESD(other.fESD), |
111 | fDiagnostics(other.fDiagnostics), | |
112 | fDiagStep1(other.fDiagStep1), | |
113 | fDiagStep2(other.fDiagStep2), | |
114 | fDiagStep3(other.fDiagStep3), | |
115 | fDiagStep4(other.fDiagStep4), | |
116 | fDiagAll(other.fDiagAll) | |
42403906 | 117 | { |
56b1929b | 118 | // Copy constructor |
42403906 | 119 | } |
120 | ||
121 | ||
122 | //____________________________________________________________________ | |
123 | AliFMDReconstructor& | |
124 | AliFMDReconstructor::operator=(const AliFMDReconstructor& other) | |
125 | { | |
56b1929b | 126 | // Assignment operator |
a9579262 | 127 | fMult = other.fMult; |
128 | fNMult = other.fNMult; | |
129 | fTreeR = other.fTreeR; | |
e9fd1e20 | 130 | fCurrentVertex = other.fCurrentVertex; |
a9579262 | 131 | fESDObj = other.fESDObj; |
a9579262 | 132 | fNoiseFactor = other.fNoiseFactor; |
133 | fAngleCorrect = other.fAngleCorrect; | |
9684be2f | 134 | fVertexType = other.fVertexType; |
9684be2f | 135 | fESD = other.fESD; |
136 | fDiagnostics = other.fDiagnostics; | |
137 | fDiagStep1 = other.fDiagStep1; | |
138 | fDiagStep2 = other.fDiagStep2; | |
139 | fDiagStep3 = other.fDiagStep3; | |
140 | fDiagStep4 = other.fDiagStep4; | |
141 | fDiagAll = other.fDiagAll; | |
42403906 | 142 | return *this; |
143 | } | |
56b1929b | 144 | |
145 | //____________________________________________________________________ | |
146 | AliFMDReconstructor::~AliFMDReconstructor() | |
147 | { | |
148 | // Destructor | |
8f6ee336 | 149 | if (fMult) fMult->Delete(); |
150 | if (fMult) delete fMult; | |
151 | if (fESDObj) delete fESDObj; | |
56b1929b | 152 | } |
4347b38f | 153 | |
154 | //____________________________________________________________________ | |
155 | void | |
d76c31f4 | 156 | AliFMDReconstructor::Init() |
1a1fdef7 | 157 | { |
158 | // Initialize the reconstructor | |
f011bd38 | 159 | |
bf000c32 | 160 | // Initialize the geometry |
9b48326f | 161 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
162 | geom->Init(); | |
163 | geom->InitTransformations(); | |
164 | ||
165 | // Initialize the parameters | |
166 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
167 | param->Init(); | |
bf000c32 | 168 | |
8f6ee336 | 169 | // Current vertex position |
1a1fdef7 | 170 | fCurrentVertex = 0; |
8f6ee336 | 171 | // Create array of reconstructed strip multiplicities |
bf000c32 | 172 | fMult = new TClonesArray("AliFMDRecPoint", 51200); |
8f6ee336 | 173 | // Create ESD output object |
174 | fESDObj = new AliESDFMD; | |
175 | ||
9684be2f | 176 | // Check if we need diagnostics histograms |
177 | if (!fDiagnostics) return; | |
9b98d361 | 178 | AliInfo("Making diagnostics histograms"); |
9684be2f | 179 | fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC", |
180 | 1024, -.5, 1023.5, 1024, -.5, 1023.5); | |
181 | fDiagStep1->SetDirectory(0); | |
182 | fDiagStep1->GetXaxis()->SetTitle("ADC (read)"); | |
183 | fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)", | |
184 | fNoiseFactor)); | |
185 | fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced", | |
186 | 1024, -.5, 1023.5, 100, 0, 2); | |
187 | fDiagStep2->SetDirectory(0); | |
188 | fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)"); | |
189 | fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]"); | |
190 | fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected", | |
191 | 100, 0., 2., 100, 0., 2.); | |
192 | fDiagStep3->SetDirectory(0); | |
193 | fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]"); | |
194 | fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
195 | fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced", | |
196 | 100, 0., 2., 100, -.1, 19.9); | |
197 | fDiagStep4->SetDirectory(0); | |
198 | fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
199 | fDiagStep4->GetYaxis()->SetTitle("Multiplicity"); | |
200 | fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced", | |
201 | 1024, -.5, 1023.5, 100, -.1, 19.9); | |
202 | fDiagAll->SetDirectory(0); | |
203 | fDiagAll->GetXaxis()->SetTitle("ADC (read)"); | |
204 | fDiagAll->GetYaxis()->SetTitle("Multiplicity"); | |
4347b38f | 205 | } |
dc8af42e | 206 | |
4347b38f | 207 | //____________________________________________________________________ |
208 | void | |
1a1fdef7 | 209 | AliFMDReconstructor::ConvertDigits(AliRawReader* reader, |
210 | TTree* digitsTree) const | |
211 | { | |
212 | // Convert Raw digits to AliFMDDigit's in a tree | |
faf80567 | 213 | AliFMDDebug(1, ("Reading raw data into digits tree")); |
1a1fdef7 | 214 | AliFMDRawReader rawRead(reader, digitsTree); |
215 | // rawRead.SetSampleRate(fFMD->GetSampleRate()); | |
216 | rawRead.Exec(); | |
5cf05dbb | 217 | AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); |
218 | for (size_t i = 1; i <= 3; i++) { | |
219 | fZS[i] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); | |
220 | fZSFactor[i] = rawRead.NoiseFactor(map->Detector2DDL(i)); | |
221 | } | |
4347b38f | 222 | } |
223 | ||
4347b38f | 224 | //____________________________________________________________________ |
225 | void | |
8983e5ae | 226 | AliFMDReconstructor::GetVertex(AliESDEvent* esd) const |
4347b38f | 227 | { |
97e94238 | 228 | // Return the vertex to use. |
229 | // This is obtained from the ESD object. | |
230 | // If not found, a warning is issued. | |
9684be2f | 231 | fVertexType = kNoVertex; |
232 | fCurrentVertex = 0; | |
8983e5ae | 233 | if (!esd) return; |
234 | ||
235 | const AliESDVertex* vertex = esd->GetPrimaryVertex(); | |
236 | if (!vertex) vertex = esd->GetPrimaryVertexSPD(); | |
237 | if (!vertex) vertex = esd->GetPrimaryVertexTPC(); | |
238 | if (!vertex) vertex = esd->GetVertex(); | |
239 | ||
240 | if (vertex) { | |
241 | AliFMDDebug(2, ("Got %s (%s) from ESD: %f", | |
242 | vertex->GetName(), vertex->GetTitle(), vertex->GetZv())); | |
243 | fCurrentVertex = vertex->GetZv(); | |
244 | fVertexType = kESDVertex; | |
245 | return; | |
246 | } | |
247 | else if (esd->GetESDTZERO()) { | |
248 | AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex())); | |
249 | fCurrentVertex = esd->GetT0zVertex(); | |
250 | fVertexType = kESDVertex; | |
251 | return; | |
a3537838 | 252 | } |
9684be2f | 253 | AliWarning("Didn't get any vertex from ESD or generator"); |
254 | } | |
255 | ||
256 | ||
ddaa8027 | 257 | //____________________________________________________________________ |
258 | void | |
50b9d194 | 259 | AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const |
ddaa8027 | 260 | { |
261 | // Reconstruct directly from raw data (no intermediate output on | |
262 | // digit tree or rec point tree). | |
50b9d194 | 263 | // |
ddaa8027 | 264 | // Parameters: |
265 | // reader Raw event reader | |
266 | // ctree Not used. | |
50b9d194 | 267 | AliFMDRawReader rawReader(reader, 0); |
268 | ||
269 | UShort_t det, sec, str, fac; | |
270 | Short_t adc, oldDet = -1; | |
271 | Bool_t zs; | |
272 | Char_t rng; | |
273 | ||
274 | while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) { | |
275 | if (det != oldDet) { | |
276 | fZS[det-1] = zs; | |
277 | fZSFactor[det-1] = fac; | |
278 | oldDet = det; | |
279 | } | |
280 | ProcessSignal(det, rng, sec, str, adc); | |
281 | } | |
ddaa8027 | 282 | } |
283 | ||
faf80567 | 284 | //____________________________________________________________________ |
285 | void | |
286 | AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) const | |
287 | { | |
288 | // Reconstruct directly from raw data (no intermediate output on | |
289 | // digit tree or rec point tree). | |
290 | // | |
291 | // Parameters: | |
292 | // reader Raw event reader | |
293 | // ctree Not used. | |
294 | AliFMDRawReader rawReader(reader, 0); | |
295 | ||
296 | UShort_t det, sec, str, sam, rat, fac; | |
297 | Short_t adc, oldDet = -1; | |
298 | Bool_t zs; | |
299 | Char_t rng; | |
300 | ||
301 | while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) { | |
302 | if (!rawReader.SelectSample(sam, rat)) continue; | |
303 | if (det != oldDet) { | |
304 | fZS[det-1] = zs; | |
305 | fZSFactor[det-1] = fac; | |
306 | oldDet = det; | |
307 | } | |
308 | DigitizeSignal(sdigits, det, rng, sec, str, sam, adc); | |
309 | } | |
310 | } | |
311 | ||
9684be2f | 312 | //____________________________________________________________________ |
313 | void | |
314 | AliFMDReconstructor::Reconstruct(TTree* digitsTree, | |
315 | TTree* clusterTree) const | |
316 | { | |
317 | // Reconstruct event from digits in tree | |
318 | // Get the FMD branch holding the digits. | |
319 | // FIXME: The vertex may not be known yet, so we may have to move | |
320 | // some of this to FillESD. | |
50b9d194 | 321 | // |
322 | // Parameters: | |
323 | // digitsTree Pointer to a tree containing digits | |
324 | // clusterTree Pointer to output tree | |
325 | // | |
f95a63c4 | 326 | AliFMDDebug(2, ("Reconstructing from digits in a tree")); |
8983e5ae | 327 | GetVertex(fESD); |
b04d1f8e | 328 | |
1a1fdef7 | 329 | TBranch *digitBranch = digitsTree->GetBranch("FMD"); |
4347b38f | 330 | if (!digitBranch) { |
1a1fdef7 | 331 | Error("Exec", "No digit branch for the FMD found"); |
332 | return; | |
4347b38f | 333 | } |
0abe7182 | 334 | TClonesArray* digits = new TClonesArray("AliFMDDigit"); |
1a1fdef7 | 335 | digitBranch->SetAddress(&digits); |
4347b38f | 336 | |
8f6ee336 | 337 | if (fMult) fMult->Clear(); |
338 | if (fESDObj) fESDObj->Clear(); | |
339 | ||
340 | fNMult = 0; | |
341 | fTreeR = clusterTree; | |
342 | fTreeR->Branch("FMD", &fMult); | |
343 | ||
f95a63c4 | 344 | AliFMDDebug(5, ("Getting entry 0 from digit branch")); |
1a1fdef7 | 345 | digitBranch->GetEntry(0); |
346 | ||
faf80567 | 347 | AliFMDDebug(1, ("Processing digits")); |
e802be3e | 348 | ProcessDigits(digits); |
349 | ||
8f6ee336 | 350 | Int_t written = clusterTree->Fill(); |
f95a63c4 | 351 | AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); |
0abe7182 | 352 | digits->Delete(); |
353 | delete digits; | |
4347b38f | 354 | } |
1a1fdef7 | 355 | |
8f6ee336 | 356 | |
4347b38f | 357 | //____________________________________________________________________ |
e802be3e | 358 | void |
359 | AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const | |
4347b38f | 360 | { |
69b696b9 | 361 | // For each digit, find the pseudo rapdity, azimuthal angle, and |
362 | // number of corrected ADC counts, and pass it on to the algorithms | |
363 | // used. | |
50b9d194 | 364 | // |
365 | // Parameters: | |
366 | // digits Array of digits | |
367 | // | |
e802be3e | 368 | Int_t nDigits = digits->GetEntries(); |
f95a63c4 | 369 | AliFMDDebug(1, ("Got %d digits", nDigits)); |
a9579262 | 370 | fESDObj->SetNoiseFactor(fNoiseFactor); |
371 | fESDObj->SetAngleCorrected(fAngleCorrect); | |
e802be3e | 372 | for (Int_t i = 0; i < nDigits; i++) { |
373 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
50b9d194 | 374 | if (!digit) continue; |
375 | ProcessDigit(digit); | |
376 | } | |
377 | } | |
8f6ee336 | 378 | |
50b9d194 | 379 | //____________________________________________________________________ |
380 | void | |
381 | AliFMDReconstructor::ProcessDigit(AliFMDDigit* digit) const | |
382 | { | |
383 | UShort_t det = digit->Detector(); | |
384 | Char_t rng = digit->Ring(); | |
385 | UShort_t sec = digit->Sector(); | |
386 | UShort_t str = digit->Strip(); | |
387 | Short_t adc = digit->Counts(); | |
388 | ||
389 | ProcessSignal(det, rng, sec, str, adc); | |
390 | } | |
391 | ||
392 | //____________________________________________________________________ | |
393 | void | |
394 | AliFMDReconstructor::ProcessSignal(UShort_t det, | |
395 | Char_t rng, | |
396 | UShort_t sec, | |
397 | UShort_t str, | |
398 | Short_t adc) const | |
399 | { | |
400 | // Process the signal from a single strip | |
401 | // | |
402 | // Parameters: | |
403 | // det Detector ID | |
404 | // rng Ring ID | |
405 | // sec Sector ID | |
406 | // rng Strip ID | |
407 | // adc ADC counts | |
408 | // | |
409 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
410 | // Check that the strip is not marked as dead | |
411 | if (param->IsDead(det, rng, sec, str)) { | |
412 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
413 | return; | |
414 | } | |
415 | ||
416 | // digit->Print(); | |
417 | // Get eta and phi | |
418 | Float_t eta, phi; | |
419 | PhysicalCoordinates(det, rng, sec, str, eta, phi); | |
4347b38f | 420 | |
50b9d194 | 421 | // Substract pedestal. |
422 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
423 | if(counts == USHRT_MAX) return; | |
424 | ||
8f6ee336 | 425 | // Gain match digits. |
50b9d194 | 426 | Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts); |
427 | // Get rid of nonsense energy | |
428 | if(edep < 0) return; | |
429 | ||
430 | // Make rough multiplicity | |
431 | Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep); | |
432 | // Get rid of nonsense mult | |
433 | if (mult < 0) return; | |
434 | AliFMDDebug(5, ("FMD%d%c[%2d,%3d]: " | |
435 | "ADC: %d, Counts: %d, Energy: %f, Mult: %f", | |
436 | det, rng, sec, str, adc, counts, edep, mult)); | |
437 | ||
438 | // Create a `RecPoint' on the output branch. | |
439 | if (fMult) { | |
440 | AliFMDRecPoint* m = | |
441 | new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str, | |
442 | eta, phi, edep, mult); | |
443 | (void)m; // Suppress warnings about unused variables. | |
444 | fNMult++; | |
4347b38f | 445 | } |
50b9d194 | 446 | |
447 | fESDObj->SetMultiplicity(det, rng, sec, str, mult); | |
448 | fESDObj->SetEta(det, rng, sec, str, eta); | |
449 | ||
450 | if (fDiagAll) fDiagAll->Fill(adc, mult); | |
451 | ||
4347b38f | 452 | } |
8f6ee336 | 453 | |
faf80567 | 454 | //____________________________________________________________________ |
455 | void | |
456 | AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits, | |
457 | UShort_t det, | |
458 | Char_t rng, | |
459 | UShort_t sec, | |
460 | UShort_t str, | |
461 | UShort_t /* sam */, | |
462 | Short_t adc) const | |
463 | { | |
464 | // Process the signal from a single strip | |
465 | // | |
466 | // Parameters: | |
467 | // det Detector ID | |
468 | // rng Ring ID | |
469 | // sec Sector ID | |
470 | // rng Strip ID | |
471 | // adc ADC counts | |
472 | // | |
473 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
474 | // Check that the strip is not marked as dead | |
475 | if (param->IsDead(det, rng, sec, str)) { | |
476 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
477 | return; | |
478 | } | |
479 | ||
480 | // Substract pedestal. | |
481 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
482 | if(counts == USHRT_MAX || counts == 0) return; | |
483 | ||
484 | // Gain match digits. | |
485 | Double_t edep = Adc2Energy(det, rng, sec, str, counts); | |
486 | // Get rid of nonsense energy | |
487 | if(edep < 0) return; | |
488 | ||
489 | Int_t n = sdigits->GetEntriesFast(); | |
490 | // AliFMDSDigit* sdigit = | |
491 | new ((*sdigits)[n]) | |
492 | AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts); | |
493 | // sdigit->SetCount(sam, counts); | |
494 | } | |
495 | ||
496 | //____________________________________________________________________ | |
497 | UShort_t | |
498 | AliFMDReconstructor::SubtractPedestal(UShort_t det, | |
499 | Char_t rng, | |
500 | UShort_t sec, | |
501 | UShort_t str, | |
502 | UShort_t adc, | |
503 | Float_t noiseFactor, | |
504 | Bool_t zsEnabled, | |
505 | UShort_t zsNoiseFactor) const | |
506 | { | |
507 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
508 | Float_t ped = (zsEnabled ? 0 : | |
509 | param->GetPedestal(det, rng, sec, str)); | |
510 | Float_t noise = param->GetPedestalWidth(det, rng, sec, str); | |
511 | if(ped < 0 || noise < 0) { | |
512 | AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) " | |
513 | "for FMD%d%c[%02d,%03d]", | |
514 | ped, noise, det, rng, sec, str)); | |
515 | return USHRT_MAX; | |
516 | } | |
517 | AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d " | |
518 | "(%s w/factor %d, noise factor %f, " | |
519 | "pedestal %8.2f+/-%8.2f)", | |
520 | det, rng, sec, str, adc, | |
521 | (zsEnabled ? "zs'ed" : "straight"), | |
522 | zsNoiseFactor, noiseFactor, ped, noise)); | |
523 | ||
524 | Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped); | |
525 | counts = TMath::Max(Int_t(counts), 0); | |
526 | // Calculate the noise factor for suppressing remenants of the noise | |
527 | // peak. If we have done on-line zero suppression, we only check | |
528 | // for noise signals that are larger than the suppressed noise. If | |
529 | // the noise factor used on line is larger than the factor used | |
530 | // here, we do not do this check at all. | |
531 | // | |
532 | // For example: | |
533 | // Online factor | Read factor | Result | |
534 | // ---------------+--------------+------------------------------- | |
535 | // 2 | 3 | Check if signal > 1 * noise | |
536 | // 3 | 3 | Check if signal > 0 | |
537 | // 3 | 2 | Check if signal > 0 | |
538 | // | |
539 | // In this way, we make sure that we do not suppress away too much | |
540 | // data, and that the read-factor is the most stringent cut. | |
541 | Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0)); | |
542 | if (counts < noise * nf) counts = 0; | |
543 | if (counts > 0) AliDebugClass(15, "Got a hit strip"); | |
544 | ||
545 | return counts; | |
546 | } | |
50b9d194 | 547 | |
548 | ||
1a1fdef7 | 549 | //____________________________________________________________________ |
550 | UShort_t | |
50b9d194 | 551 | AliFMDReconstructor::SubtractPedestal(UShort_t det, |
552 | Char_t rng, | |
553 | UShort_t sec, | |
554 | UShort_t str, | |
555 | Short_t adc) const | |
1a1fdef7 | 556 | { |
557 | // Member function to subtract the pedestal from a digit | |
50b9d194 | 558 | // |
559 | // Parameters: | |
560 | // det Detector ID | |
561 | // rng Ring ID | |
562 | // sec Sector ID | |
563 | // rng Strip ID | |
564 | // adc # of ADC counts | |
565 | // Return: | |
566 | // Pedestal subtracted signal or USHRT_MAX in case of problems | |
567 | // | |
faf80567 | 568 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc, |
569 | fNoiseFactor, fZS[det-1], | |
570 | fZSFactor[det-1]); | |
9684be2f | 571 | if (fDiagStep1) fDiagStep1->Fill(adc, counts); |
8f6ee336 | 572 | |
faf80567 | 573 | return counts; |
1a1fdef7 | 574 | } |
575 | ||
8f6ee336 | 576 | //____________________________________________________________________ |
577 | Float_t | |
50b9d194 | 578 | AliFMDReconstructor::Adc2Energy(UShort_t det, |
579 | Char_t rng, | |
580 | UShort_t sec, | |
581 | UShort_t str, | |
50b9d194 | 582 | UShort_t count) const |
8f6ee336 | 583 | { |
584 | // Converts number of ADC counts to energy deposited. | |
585 | // Note, that this member function can be overloaded by derived | |
586 | // classes to do strip-specific look-ups in databases or the like, | |
587 | // to find the proper gain for a strip. | |
588 | // | |
68aba90a | 589 | // In the first simple version, we calculate the energy deposited as |
8f6ee336 | 590 | // |
591 | // EnergyDeposited = cos(theta) * gain * count | |
592 | // | |
593 | // where | |
594 | // | |
595 | // Pre_amp_MIP_Range | |
596 | // gain = ----------------- * Energy_deposited_per_MIP | |
597 | // ADC_channel_size | |
598 | // | |
599 | // is constant and the same for all strips. | |
68aba90a | 600 | // |
601 | // For the production we use the conversion measured in the NBI lab. | |
602 | // The total conversion is then: | |
50b9d194 | 603 | // |
604 | // gain = ADC / DAC | |
605 | // | |
606 | // EdepMip * count | |
607 | // => energy = ---------------- | |
608 | // gain * DACPerADC | |
609 | // | |
610 | // Parameters: | |
611 | // det Detector ID | |
612 | // rng Ring ID | |
613 | // sec Sector ID | |
614 | // rng Strip ID | |
50b9d194 | 615 | // counts Number of ADC counts over pedestal |
616 | // Return | |
617 | // The energy deposited in a single strip, or -1 in case of problems | |
68aba90a | 618 | // |
a9579262 | 619 | if (count <= 0) return 0; |
8f6ee336 | 620 | AliFMDParameters* param = AliFMDParameters::Instance(); |
50b9d194 | 621 | Float_t gain = param->GetPulseGain(det, rng, sec, str); |
68aba90a | 622 | // 'Tagging' bad gains as bad energy |
623 | if (gain < 0) { | |
50b9d194 | 624 | AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]", |
625 | gain, det, rng, sec, str)); | |
68aba90a | 626 | return -1; |
627 | } | |
50b9d194 | 628 | AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)", |
68aba90a | 629 | count, gain,param->GetDACPerMIP())); |
a9579262 | 630 | |
50b9d194 | 631 | Double_t edep = ((count * param->GetEdepMip()) |
632 | / (gain * param->GetDACPerMIP())); | |
faf80567 | 633 | return edep; |
634 | } | |
635 | ||
636 | //____________________________________________________________________ | |
637 | Float_t | |
638 | AliFMDReconstructor::Adc2Energy(UShort_t det, | |
639 | Char_t rng, | |
640 | UShort_t sec, | |
641 | UShort_t str, | |
642 | Float_t eta, | |
643 | UShort_t count) const | |
644 | { | |
645 | // Converts number of ADC counts to energy deposited. | |
646 | // Note, that this member function can be overloaded by derived | |
647 | // classes to do strip-specific look-ups in databases or the like, | |
648 | // to find the proper gain for a strip. | |
649 | // | |
650 | // In the first simple version, we calculate the energy deposited as | |
651 | // | |
652 | // EnergyDeposited = cos(theta) * gain * count | |
653 | // | |
654 | // where | |
655 | // | |
656 | // Pre_amp_MIP_Range | |
657 | // gain = ----------------- * Energy_deposited_per_MIP | |
658 | // ADC_channel_size | |
659 | // | |
660 | // is constant and the same for all strips. | |
661 | // | |
662 | // For the production we use the conversion measured in the NBI lab. | |
663 | // The total conversion is then: | |
664 | // | |
665 | // gain = ADC / DAC | |
666 | // | |
667 | // EdepMip * count | |
668 | // => energy = ---------------- | |
669 | // gain * DACPerADC | |
670 | // | |
671 | // Parameters: | |
672 | // det Detector ID | |
673 | // rng Ring ID | |
674 | // sec Sector ID | |
675 | // rng Strip ID | |
676 | // eta Psuedo-rapidity | |
677 | // counts Number of ADC counts over pedestal | |
678 | // Return | |
679 | // The energy deposited in a single strip, or -1 in case of problems | |
680 | // | |
681 | Double_t edep = Adc2Energy(det, rng, sec, str, count); | |
682 | ||
9684be2f | 683 | if (fDiagStep2) fDiagStep2->Fill(count, edep); |
a9579262 | 684 | if (fAngleCorrect) { |
9684be2f | 685 | Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); |
686 | Double_t corr = TMath::Abs(TMath::Cos(theta)); | |
687 | Double_t cedep = corr * edep; | |
f95a63c4 | 688 | AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", |
9684be2f | 689 | edep, corr, cedep, eta, theta)); |
690 | if (fDiagStep3) fDiagStep3->Fill(edep, cedep); | |
691 | edep = cedep; | |
a9579262 | 692 | } |
8f6ee336 | 693 | return edep; |
694 | } | |
695 | ||
696 | //____________________________________________________________________ | |
697 | Float_t | |
50b9d194 | 698 | AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/, |
699 | Char_t /*rng*/, | |
700 | UShort_t /*sec*/, | |
701 | UShort_t /*str*/, | |
702 | Float_t edep) const | |
8f6ee336 | 703 | { |
704 | // Converts an energy signal to number of particles. | |
705 | // Note, that this member function can be overloaded by derived | |
706 | // classes to do strip-specific look-ups in databases or the like, | |
707 | // to find the proper gain for a strip. | |
708 | // | |
709 | // In this simple version, we calculate the multiplicity as | |
710 | // | |
711 | // multiplicity = Energy_deposited / Energy_deposited_per_MIP | |
712 | // | |
713 | // where | |
714 | // | |
715 | // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness | |
716 | // | |
717 | // is constant and the same for all strips | |
50b9d194 | 718 | // |
719 | // Parameters: | |
720 | // det Detector ID | |
721 | // rng Ring ID | |
722 | // sec Sector ID | |
723 | // rng Strip ID | |
724 | // edep Energy deposited in a single strip | |
725 | // Return | |
726 | // The "bare" multiplicity corresponding to the energy deposited | |
8f6ee336 | 727 | AliFMDParameters* param = AliFMDParameters::Instance(); |
728 | Double_t edepMIP = param->GetEdepMip(); | |
729 | Float_t mult = edep / edepMIP; | |
68aba90a | 730 | #if 0 |
8f6ee336 | 731 | if (edep > 0) |
f95a63c4 | 732 | AliFMDDebug(15, ("Translating energy %f to multiplicity via " |
8f6ee336 | 733 | "divider %f->%f", edep, edepMIP, mult)); |
68aba90a | 734 | #endif |
9684be2f | 735 | if (fDiagStep4) fDiagStep4->Fill(edep, mult); |
8f6ee336 | 736 | return mult; |
737 | } | |
738 | ||
739 | //____________________________________________________________________ | |
740 | void | |
50b9d194 | 741 | AliFMDReconstructor::PhysicalCoordinates(UShort_t det, |
742 | Char_t rng, | |
743 | UShort_t sec, | |
744 | UShort_t str, | |
8f6ee336 | 745 | Float_t& eta, |
746 | Float_t& phi) const | |
747 | { | |
748 | // Get the eta and phi of a digit | |
749 | // | |
50b9d194 | 750 | // Parameters: |
751 | // det Detector ID | |
752 | // rng Ring ID | |
753 | // sec Sector ID | |
754 | // rng Strip ID | |
755 | // eta On return, contains the psuedo-rapidity of the strip | |
756 | // phi On return, contains the azimuthal angle of the strip | |
757 | // | |
9b48326f | 758 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
bf000c32 | 759 | Double_t x, y, z, r, theta; |
50b9d194 | 760 | geom->Detector2XYZ(det, rng, sec, str, x, y, z); |
bf000c32 | 761 | // Correct for vertex offset. |
8161c5f7 | 762 | z -= fCurrentVertex; |
bf000c32 | 763 | phi = TMath::ATan2(y, x); |
764 | r = TMath::Sqrt(y * y + x * x); | |
765 | theta = TMath::ATan2(r, z); | |
766 | eta = -TMath::Log(TMath::Tan(theta / 2)); | |
8f6ee336 | 767 | } |
768 | ||
769 | ||
770 | ||
4347b38f | 771 | //____________________________________________________________________ |
772 | void | |
1a1fdef7 | 773 | AliFMDReconstructor::FillESD(TTree* /* digitsTree */, |
774 | TTree* /* clusterTree */, | |
af885e0f | 775 | AliESDEvent* esd) const |
121a60bd | 776 | { |
42403906 | 777 | // nothing to be done |
69b696b9 | 778 | // FIXME: The vertex may not be known when Reconstruct is executed, |
779 | // so we may have to move some of that member function here. | |
f95a63c4 | 780 | AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); |
8f6ee336 | 781 | // fESDObj->Print(); |
782 | ||
50b9d194 | 783 | Double_t oldVz = fCurrentVertex; |
8983e5ae | 784 | GetVertex(esd); |
50b9d194 | 785 | if (fVertexType != kNoVertex) { |
786 | AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)", | |
787 | fCurrentVertex, oldVz)); | |
788 | AliFMDESDRevertexer revertexer; | |
789 | revertexer.Revertex(fESDObj, fCurrentVertex); | |
790 | } | |
791 | ||
8f6ee336 | 792 | if (esd) { |
f95a63c4 | 793 | AliFMDDebug(2, ("Writing FMD data to ESD tree")); |
8f6ee336 | 794 | esd->SetFMDData(fESDObj); |
a3537838 | 795 | } |
9684be2f | 796 | |
797 | if (!fDiagnostics || !esd) return; | |
798 | static bool first = true; | |
69893a66 | 799 | // This is most likely NOT the event number you'd like to use. It |
800 | // has nothing to do with the 'real' event number. | |
801 | // - That's OK. We just use it for the name of the directory - | |
802 | // nothing else. Christian | |
803 | Int_t evno = esd->GetEventNumberInFile(); | |
804 | AliFMDDebug(1, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); | |
9684be2f | 805 | TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); |
806 | first = false; | |
807 | f.cd(); | |
808 | TDirectory* d = f.mkdir(Form("%03d", evno), | |
809 | Form("Diagnostics histograms for event # %d", evno)); | |
810 | d->cd(); | |
811 | if (fDiagStep1) fDiagStep1->Write(); | |
812 | if (fDiagStep2) fDiagStep2->Write(); | |
813 | if (fDiagStep3) fDiagStep3->Write(); | |
814 | if (fDiagStep4) fDiagStep4->Write(); | |
815 | if (fDiagAll) fDiagAll->Write(); | |
816 | d->Write(); | |
817 | f.Write(); | |
818 | f.Close(); | |
819 | ||
820 | if (fDiagStep1) fDiagStep1->Reset(); | |
821 | if (fDiagStep2) fDiagStep2->Reset(); | |
822 | if (fDiagStep3) fDiagStep3->Reset(); | |
823 | if (fDiagStep4) fDiagStep4->Reset(); | |
824 | if (fDiagAll) fDiagAll->Reset(); | |
121a60bd | 825 | } |
826 | ||
ddaa8027 | 827 | //____________________________________________________________________ |
828 | void | |
829 | AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, | |
830 | AliESDEvent* esd) const | |
831 | { | |
832 | TTree* dummy = 0; | |
833 | FillESD(dummy, clusterTree, esd); | |
834 | } | |
835 | ||
42403906 | 836 | //____________________________________________________________________ |
837 | // | |
838 | // EOF | |
839 | // |