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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 |
818fff8d | 44 | #include "AliFMDRecoParam.h" // ALIFMDRECOPARAM_H |
56b1929b | 45 | #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H |
bf000c32 | 46 | #include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H |
af885e0f | 47 | #include "AliESDEvent.h" // ALIESDEVENT_H |
aad72f45 | 48 | #include "AliESDVertex.h" // ALIESDVERTEX_H |
50b9d194 | 49 | #include "AliESDTZERO.h" // ALIESDVERTEX_H |
8f6ee336 | 50 | #include <AliESDFMD.h> // ALIESDFMD_H |
aad72f45 | 51 | #include <TMath.h> |
9684be2f | 52 | #include <TH1.h> |
53 | #include <TH2.h> | |
54 | #include <TFile.h> | |
68aba90a | 55 | #include <climits> |
86878381 | 56 | #include "AliFMDESDRevertexer.h" |
50b9d194 | 57 | |
68aba90a | 58 | |
02a27b50 | 59 | class AliRawReader; |
4347b38f | 60 | |
61 | //____________________________________________________________________ | |
925e6570 | 62 | ClassImp(AliFMDReconstructor) |
1a1fdef7 | 63 | #if 0 |
64 | ; // This is here to keep Emacs for indenting the next line | |
65 | #endif | |
37c55dc0 | 66 | |
4347b38f | 67 | //____________________________________________________________________ |
68 | AliFMDReconstructor::AliFMDReconstructor() | |
69 | : AliReconstructor(), | |
e9fd1e20 | 70 | fMult(0x0), |
71 | fNMult(0), | |
72 | fTreeR(0x0), | |
73 | fCurrentVertex(0), | |
74 | fESDObj(0x0), | |
9684be2f | 75 | fNoiseFactor(0), |
76 | fAngleCorrect(kTRUE), | |
77 | fVertexType(kNoVertex), | |
9684be2f | 78 | fESD(0x0), |
488faace | 79 | fDiagnostics(kFALSE), |
9684be2f | 80 | fDiagStep1(0), |
81 | fDiagStep2(0), | |
82 | fDiagStep3(0), | |
83 | fDiagStep4(0), | |
84 | fDiagAll(0) | |
4347b38f | 85 | { |
8f6ee336 | 86 | // Make a new FMD reconstructor object - default CTOR. |
a9579262 | 87 | SetNoiseFactor(); |
88 | SetAngleCorrect(); | |
9b98d361 | 89 | if (AliDebugLevel() > 0) fDiagnostics = kTRUE; |
030d93c1 | 90 | for(Int_t det = 1; det<=3; det++) { |
91 | fZS[det-1] = kFALSE; | |
92 | fZSFactor[det-1] = 0; | |
93 | } | |
4347b38f | 94 | } |
56b1929b | 95 | |
96 | //____________________________________________________________________ | |
97 | AliFMDReconstructor::~AliFMDReconstructor() | |
98 | { | |
99 | // Destructor | |
8f6ee336 | 100 | if (fMult) fMult->Delete(); |
101 | if (fMult) delete fMult; | |
102 | if (fESDObj) delete fESDObj; | |
56b1929b | 103 | } |
4347b38f | 104 | |
105 | //____________________________________________________________________ | |
106 | void | |
d76c31f4 | 107 | AliFMDReconstructor::Init() |
1a1fdef7 | 108 | { |
109 | // Initialize the reconstructor | |
f011bd38 | 110 | |
bf000c32 | 111 | // Initialize the geometry |
9b48326f | 112 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
113 | geom->Init(); | |
114 | geom->InitTransformations(); | |
115 | ||
116 | // Initialize the parameters | |
117 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
118 | param->Init(); | |
bf000c32 | 119 | |
8f6ee336 | 120 | // Current vertex position |
1a1fdef7 | 121 | fCurrentVertex = 0; |
8f6ee336 | 122 | // Create array of reconstructed strip multiplicities |
bf000c32 | 123 | fMult = new TClonesArray("AliFMDRecPoint", 51200); |
8f6ee336 | 124 | // Create ESD output object |
125 | fESDObj = new AliESDFMD; | |
126 | ||
9684be2f | 127 | // Check if we need diagnostics histograms |
128 | if (!fDiagnostics) return; | |
9b98d361 | 129 | AliInfo("Making diagnostics histograms"); |
9684be2f | 130 | fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC", |
131 | 1024, -.5, 1023.5, 1024, -.5, 1023.5); | |
132 | fDiagStep1->SetDirectory(0); | |
133 | fDiagStep1->GetXaxis()->SetTitle("ADC (read)"); | |
134 | fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)", | |
135 | fNoiseFactor)); | |
136 | fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced", | |
137 | 1024, -.5, 1023.5, 100, 0, 2); | |
138 | fDiagStep2->SetDirectory(0); | |
139 | fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)"); | |
140 | fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]"); | |
141 | fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected", | |
142 | 100, 0., 2., 100, 0., 2.); | |
143 | fDiagStep3->SetDirectory(0); | |
144 | fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]"); | |
145 | fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
146 | fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced", | |
147 | 100, 0., 2., 100, -.1, 19.9); | |
148 | fDiagStep4->SetDirectory(0); | |
149 | fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
150 | fDiagStep4->GetYaxis()->SetTitle("Multiplicity"); | |
151 | fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced", | |
152 | 1024, -.5, 1023.5, 100, -.1, 19.9); | |
153 | fDiagAll->SetDirectory(0); | |
154 | fDiagAll->GetXaxis()->SetTitle("ADC (read)"); | |
155 | fDiagAll->GetYaxis()->SetTitle("Multiplicity"); | |
4347b38f | 156 | } |
dc8af42e | 157 | |
4347b38f | 158 | //____________________________________________________________________ |
159 | void | |
1a1fdef7 | 160 | AliFMDReconstructor::ConvertDigits(AliRawReader* reader, |
161 | TTree* digitsTree) const | |
162 | { | |
163 | // Convert Raw digits to AliFMDDigit's in a tree | |
faf80567 | 164 | AliFMDDebug(1, ("Reading raw data into digits tree")); |
1a1fdef7 | 165 | AliFMDRawReader rawRead(reader, digitsTree); |
166 | // rawRead.SetSampleRate(fFMD->GetSampleRate()); | |
167 | rawRead.Exec(); | |
5cf05dbb | 168 | AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); |
169 | for (size_t i = 1; i <= 3; i++) { | |
5dd6072d | 170 | fZS[i-1] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); |
171 | fZSFactor[i-1] = rawRead.NoiseFactor(map->Detector2DDL(i)); | |
5cf05dbb | 172 | } |
4347b38f | 173 | } |
174 | ||
4347b38f | 175 | //____________________________________________________________________ |
176 | void | |
8983e5ae | 177 | AliFMDReconstructor::GetVertex(AliESDEvent* esd) const |
4347b38f | 178 | { |
97e94238 | 179 | // Return the vertex to use. |
180 | // This is obtained from the ESD object. | |
181 | // If not found, a warning is issued. | |
9684be2f | 182 | fVertexType = kNoVertex; |
183 | fCurrentVertex = 0; | |
8983e5ae | 184 | if (!esd) return; |
185 | ||
186 | const AliESDVertex* vertex = esd->GetPrimaryVertex(); | |
187 | if (!vertex) vertex = esd->GetPrimaryVertexSPD(); | |
188 | if (!vertex) vertex = esd->GetPrimaryVertexTPC(); | |
189 | if (!vertex) vertex = esd->GetVertex(); | |
190 | ||
191 | if (vertex) { | |
192 | AliFMDDebug(2, ("Got %s (%s) from ESD: %f", | |
193 | vertex->GetName(), vertex->GetTitle(), vertex->GetZv())); | |
194 | fCurrentVertex = vertex->GetZv(); | |
195 | fVertexType = kESDVertex; | |
196 | return; | |
197 | } | |
198 | else if (esd->GetESDTZERO()) { | |
199 | AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex())); | |
200 | fCurrentVertex = esd->GetT0zVertex(); | |
201 | fVertexType = kESDVertex; | |
202 | return; | |
a3537838 | 203 | } |
9684be2f | 204 | AliWarning("Didn't get any vertex from ESD or generator"); |
205 | } | |
206 | ||
818fff8d | 207 | //____________________________________________________________________ |
208 | Int_t | |
209 | AliFMDReconstructor::GetIdentifier() const | |
210 | { | |
211 | return AliReconstruction::GetDetIndex(GetDetectorName()); | |
212 | } | |
213 | ||
214 | //____________________________________________________________________ | |
215 | const AliFMDRecoParam* | |
216 | AliFMDReconstructor::GetParameters() const | |
217 | { | |
218 | Int_t iDet = 12; // GetIdentifier(); | |
219 | const AliDetectorRecoParam* params = AliReconstructor::GetRecoParam(iDet); | |
220 | if (!params || params->IsA() != AliFMDRecoParam::Class()) return 0; | |
221 | return static_cast<const AliFMDRecoParam*>(params); | |
222 | } | |
223 | ||
224 | //____________________________________________________________________ | |
225 | void | |
226 | AliFMDReconstructor::UseRecoParam(Bool_t set) const | |
227 | { | |
228 | static Float_t savedNoiseFactor = fNoiseFactor; | |
229 | static Bool_t savedAngleCorrect = fAngleCorrect; | |
230 | if (set) { | |
231 | const AliFMDRecoParam* params = GetParameters(); | |
232 | if (params) { | |
233 | fNoiseFactor = params->NoiseFactor(); | |
234 | fAngleCorrect = params->AngleCorrect(); | |
235 | } | |
236 | return; | |
237 | } | |
238 | fNoiseFactor = savedNoiseFactor; | |
239 | fAngleCorrect = savedAngleCorrect; | |
240 | } | |
241 | ||
242 | ||
9684be2f | 243 | |
ddaa8027 | 244 | //____________________________________________________________________ |
245 | void | |
50b9d194 | 246 | AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const |
ddaa8027 | 247 | { |
248 | // Reconstruct directly from raw data (no intermediate output on | |
249 | // digit tree or rec point tree). | |
50b9d194 | 250 | // |
ddaa8027 | 251 | // Parameters: |
252 | // reader Raw event reader | |
253 | // ctree Not used. | |
3991ca94 | 254 | AliFMDDebug(1, ("Reconstructing from raw reader")); |
50b9d194 | 255 | AliFMDRawReader rawReader(reader, 0); |
256 | ||
257 | UShort_t det, sec, str, fac; | |
258 | Short_t adc, oldDet = -1; | |
259 | Bool_t zs; | |
260 | Char_t rng; | |
818fff8d | 261 | |
262 | UseRecoParam(kTRUE); | |
50b9d194 | 263 | while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) { |
264 | if (det != oldDet) { | |
265 | fZS[det-1] = zs; | |
266 | fZSFactor[det-1] = fac; | |
267 | oldDet = det; | |
268 | } | |
269 | ProcessSignal(det, rng, sec, str, adc); | |
270 | } | |
818fff8d | 271 | UseRecoParam(kFALSE); |
272 | ||
ddaa8027 | 273 | } |
274 | ||
faf80567 | 275 | //____________________________________________________________________ |
276 | void | |
277 | AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) const | |
278 | { | |
279 | // Reconstruct directly from raw data (no intermediate output on | |
280 | // digit tree or rec point tree). | |
281 | // | |
282 | // Parameters: | |
283 | // reader Raw event reader | |
284 | // ctree Not used. | |
285 | AliFMDRawReader rawReader(reader, 0); | |
286 | ||
287 | UShort_t det, sec, str, sam, rat, fac; | |
288 | Short_t adc, oldDet = -1; | |
289 | Bool_t zs; | |
290 | Char_t rng; | |
291 | ||
818fff8d | 292 | UseRecoParam(kTRUE); |
faf80567 | 293 | while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) { |
294 | if (!rawReader.SelectSample(sam, rat)) continue; | |
295 | if (det != oldDet) { | |
296 | fZS[det-1] = zs; | |
297 | fZSFactor[det-1] = fac; | |
298 | oldDet = det; | |
299 | } | |
300 | DigitizeSignal(sdigits, det, rng, sec, str, sam, adc); | |
301 | } | |
818fff8d | 302 | UseRecoParam(kFALSE); |
faf80567 | 303 | } |
304 | ||
9684be2f | 305 | //____________________________________________________________________ |
306 | void | |
307 | AliFMDReconstructor::Reconstruct(TTree* digitsTree, | |
308 | TTree* clusterTree) const | |
309 | { | |
310 | // Reconstruct event from digits in tree | |
311 | // Get the FMD branch holding the digits. | |
312 | // FIXME: The vertex may not be known yet, so we may have to move | |
313 | // some of this to FillESD. | |
50b9d194 | 314 | // |
315 | // Parameters: | |
316 | // digitsTree Pointer to a tree containing digits | |
317 | // clusterTree Pointer to output tree | |
318 | // | |
3991ca94 | 319 | AliFMDDebug(1, ("Reconstructing from digits in a tree")); |
8983e5ae | 320 | GetVertex(fESD); |
86878381 | 321 | |
322 | static TClonesArray* digits = new TClonesArray("AliFMDDigit"); | |
1a1fdef7 | 323 | TBranch *digitBranch = digitsTree->GetBranch("FMD"); |
4347b38f | 324 | if (!digitBranch) { |
1a1fdef7 | 325 | Error("Exec", "No digit branch for the FMD found"); |
326 | return; | |
4347b38f | 327 | } |
86878381 | 328 | // TClonesArray* digits = new TClonesArray("AliFMDDigit"); |
1a1fdef7 | 329 | digitBranch->SetAddress(&digits); |
4347b38f | 330 | |
8f6ee336 | 331 | if (fMult) fMult->Clear(); |
332 | if (fESDObj) fESDObj->Clear(); | |
333 | ||
334 | fNMult = 0; | |
335 | fTreeR = clusterTree; | |
336 | fTreeR->Branch("FMD", &fMult); | |
337 | ||
f95a63c4 | 338 | AliFMDDebug(5, ("Getting entry 0 from digit branch")); |
1a1fdef7 | 339 | digitBranch->GetEntry(0); |
340 | ||
3991ca94 | 341 | AliFMDDebug(5, ("Processing digits")); |
818fff8d | 342 | UseRecoParam(kTRUE); |
e802be3e | 343 | ProcessDigits(digits); |
818fff8d | 344 | UseRecoParam(kFALSE); |
e802be3e | 345 | |
8f6ee336 | 346 | Int_t written = clusterTree->Fill(); |
f95a63c4 | 347 | AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); |
0abe7182 | 348 | digits->Delete(); |
86878381 | 349 | // delete digits; |
4347b38f | 350 | } |
1a1fdef7 | 351 | |
8f6ee336 | 352 | |
4347b38f | 353 | //____________________________________________________________________ |
e802be3e | 354 | void |
355 | AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const | |
4347b38f | 356 | { |
69b696b9 | 357 | // For each digit, find the pseudo rapdity, azimuthal angle, and |
358 | // number of corrected ADC counts, and pass it on to the algorithms | |
359 | // used. | |
50b9d194 | 360 | // |
361 | // Parameters: | |
362 | // digits Array of digits | |
363 | // | |
e802be3e | 364 | Int_t nDigits = digits->GetEntries(); |
3991ca94 | 365 | AliFMDDebug(2, ("Got %d digits", nDigits)); |
a9579262 | 366 | fESDObj->SetNoiseFactor(fNoiseFactor); |
367 | fESDObj->SetAngleCorrected(fAngleCorrect); | |
e802be3e | 368 | for (Int_t i = 0; i < nDigits; i++) { |
369 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
50b9d194 | 370 | if (!digit) continue; |
371 | ProcessDigit(digit); | |
372 | } | |
373 | } | |
8f6ee336 | 374 | |
50b9d194 | 375 | //____________________________________________________________________ |
376 | void | |
377 | AliFMDReconstructor::ProcessDigit(AliFMDDigit* digit) const | |
378 | { | |
379 | UShort_t det = digit->Detector(); | |
380 | Char_t rng = digit->Ring(); | |
381 | UShort_t sec = digit->Sector(); | |
382 | UShort_t str = digit->Strip(); | |
383 | Short_t adc = digit->Counts(); | |
a0354a2a | 384 | |
50b9d194 | 385 | ProcessSignal(det, rng, sec, str, adc); |
386 | } | |
387 | ||
388 | //____________________________________________________________________ | |
389 | void | |
390 | AliFMDReconstructor::ProcessSignal(UShort_t det, | |
391 | Char_t rng, | |
392 | UShort_t sec, | |
393 | UShort_t str, | |
394 | Short_t adc) const | |
395 | { | |
396 | // Process the signal from a single strip | |
397 | // | |
398 | // Parameters: | |
399 | // det Detector ID | |
400 | // rng Ring ID | |
401 | // sec Sector ID | |
402 | // rng Strip ID | |
403 | // adc ADC counts | |
404 | // | |
405 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
406 | // Check that the strip is not marked as dead | |
407 | if (param->IsDead(det, rng, sec, str)) { | |
86878381 | 408 | AliFMDDebug(1, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); |
50b9d194 | 409 | return; |
410 | } | |
411 | ||
412 | // digit->Print(); | |
413 | // Get eta and phi | |
414 | Float_t eta, phi; | |
415 | PhysicalCoordinates(det, rng, sec, str, eta, phi); | |
4347b38f | 416 | |
50b9d194 | 417 | // Substract pedestal. |
418 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
419 | if(counts == USHRT_MAX) return; | |
420 | ||
8f6ee336 | 421 | // Gain match digits. |
50b9d194 | 422 | Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts); |
423 | // Get rid of nonsense energy | |
424 | if(edep < 0) return; | |
425 | ||
426 | // Make rough multiplicity | |
427 | Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep); | |
428 | // Get rid of nonsense mult | |
6eb2922a | 429 | //if (mult > 20) { |
430 | // AliWarning(Form("The mutliplicity in FMD%d%c[%2d,%3d]=%f > 20 " | |
431 | // "(ADC: %d, Energy: %f)", det, rng, sec, str, mult, | |
432 | // counts, edep)); | |
433 | // } | |
50b9d194 | 434 | if (mult < 0) return; |
3991ca94 | 435 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d]: " |
50b9d194 | 436 | "ADC: %d, Counts: %d, Energy: %f, Mult: %f", |
437 | det, rng, sec, str, adc, counts, edep, mult)); | |
438 | ||
439 | // Create a `RecPoint' on the output branch. | |
440 | if (fMult) { | |
441 | AliFMDRecPoint* m = | |
442 | new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str, | |
443 | eta, phi, edep, mult); | |
444 | (void)m; // Suppress warnings about unused variables. | |
445 | fNMult++; | |
4347b38f | 446 | } |
50b9d194 | 447 | |
448 | fESDObj->SetMultiplicity(det, rng, sec, str, mult); | |
449 | fESDObj->SetEta(det, rng, sec, str, eta); | |
450 | ||
451 | if (fDiagAll) fDiagAll->Fill(adc, mult); | |
452 | ||
4347b38f | 453 | } |
8f6ee336 | 454 | |
faf80567 | 455 | //____________________________________________________________________ |
456 | void | |
457 | AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits, | |
458 | UShort_t det, | |
459 | Char_t rng, | |
460 | UShort_t sec, | |
461 | UShort_t str, | |
462 | UShort_t /* sam */, | |
463 | Short_t adc) const | |
464 | { | |
465 | // Process the signal from a single strip | |
466 | // | |
467 | // Parameters: | |
468 | // det Detector ID | |
469 | // rng Ring ID | |
470 | // sec Sector ID | |
471 | // rng Strip ID | |
472 | // adc ADC counts | |
473 | // | |
474 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
475 | // Check that the strip is not marked as dead | |
476 | if (param->IsDead(det, rng, sec, str)) { | |
477 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
478 | return; | |
479 | } | |
480 | ||
481 | // Substract pedestal. | |
482 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
483 | if(counts == USHRT_MAX || counts == 0) return; | |
484 | ||
485 | // Gain match digits. | |
486 | Double_t edep = Adc2Energy(det, rng, sec, str, counts); | |
487 | // Get rid of nonsense energy | |
488 | if(edep < 0) return; | |
489 | ||
490 | Int_t n = sdigits->GetEntriesFast(); | |
491 | // AliFMDSDigit* sdigit = | |
492 | new ((*sdigits)[n]) | |
493 | AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts); | |
494 | // sdigit->SetCount(sam, counts); | |
495 | } | |
496 | ||
497 | //____________________________________________________________________ | |
498 | UShort_t | |
499 | AliFMDReconstructor::SubtractPedestal(UShort_t det, | |
500 | Char_t rng, | |
501 | UShort_t sec, | |
502 | UShort_t str, | |
503 | UShort_t adc, | |
504 | Float_t noiseFactor, | |
505 | Bool_t zsEnabled, | |
506 | UShort_t zsNoiseFactor) const | |
507 | { | |
508 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
509 | Float_t ped = (zsEnabled ? 0 : | |
510 | param->GetPedestal(det, rng, sec, str)); | |
511 | Float_t noise = param->GetPedestalWidth(det, rng, sec, str); | |
512 | if(ped < 0 || noise < 0) { | |
513 | AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) " | |
514 | "for FMD%d%c[%02d,%03d]", | |
515 | ped, noise, det, rng, sec, str)); | |
516 | return USHRT_MAX; | |
517 | } | |
518 | AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d " | |
519 | "(%s w/factor %d, noise factor %f, " | |
520 | "pedestal %8.2f+/-%8.2f)", | |
521 | det, rng, sec, str, adc, | |
522 | (zsEnabled ? "zs'ed" : "straight"), | |
523 | zsNoiseFactor, noiseFactor, ped, noise)); | |
524 | ||
525 | Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped); | |
526 | counts = TMath::Max(Int_t(counts), 0); | |
527 | // Calculate the noise factor for suppressing remenants of the noise | |
528 | // peak. If we have done on-line zero suppression, we only check | |
529 | // for noise signals that are larger than the suppressed noise. If | |
530 | // the noise factor used on line is larger than the factor used | |
531 | // here, we do not do this check at all. | |
532 | // | |
533 | // For example: | |
534 | // Online factor | Read factor | Result | |
535 | // ---------------+--------------+------------------------------- | |
536 | // 2 | 3 | Check if signal > 1 * noise | |
537 | // 3 | 3 | Check if signal > 0 | |
538 | // 3 | 2 | Check if signal > 0 | |
539 | // | |
540 | // In this way, we make sure that we do not suppress away too much | |
541 | // data, and that the read-factor is the most stringent cut. | |
542 | Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0)); | |
543 | if (counts < noise * nf) counts = 0; | |
544 | if (counts > 0) AliDebugClass(15, "Got a hit strip"); | |
545 | ||
86878381 | 546 | UShort_t ret = counts < 0 ? 0 : counts; |
547 | return ret; | |
faf80567 | 548 | } |
50b9d194 | 549 | |
550 | ||
1a1fdef7 | 551 | //____________________________________________________________________ |
552 | UShort_t | |
50b9d194 | 553 | AliFMDReconstructor::SubtractPedestal(UShort_t det, |
554 | Char_t rng, | |
555 | UShort_t sec, | |
556 | UShort_t str, | |
557 | Short_t adc) const | |
1a1fdef7 | 558 | { |
559 | // Member function to subtract the pedestal from a digit | |
50b9d194 | 560 | // |
561 | // Parameters: | |
562 | // det Detector ID | |
563 | // rng Ring ID | |
564 | // sec Sector ID | |
565 | // rng Strip ID | |
566 | // adc # of ADC counts | |
567 | // Return: | |
568 | // Pedestal subtracted signal or USHRT_MAX in case of problems | |
569 | // | |
faf80567 | 570 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc, |
571 | fNoiseFactor, fZS[det-1], | |
572 | fZSFactor[det-1]); | |
9684be2f | 573 | if (fDiagStep1) fDiagStep1->Fill(adc, counts); |
8f6ee336 | 574 | |
faf80567 | 575 | return counts; |
1a1fdef7 | 576 | } |
577 | ||
8f6ee336 | 578 | //____________________________________________________________________ |
579 | Float_t | |
50b9d194 | 580 | AliFMDReconstructor::Adc2Energy(UShort_t det, |
581 | Char_t rng, | |
582 | UShort_t sec, | |
583 | UShort_t str, | |
50b9d194 | 584 | UShort_t count) const |
8f6ee336 | 585 | { |
586 | // Converts number of ADC counts to energy deposited. | |
587 | // Note, that this member function can be overloaded by derived | |
588 | // classes to do strip-specific look-ups in databases or the like, | |
589 | // to find the proper gain for a strip. | |
590 | // | |
68aba90a | 591 | // In the first simple version, we calculate the energy deposited as |
8f6ee336 | 592 | // |
593 | // EnergyDeposited = cos(theta) * gain * count | |
594 | // | |
595 | // where | |
596 | // | |
597 | // Pre_amp_MIP_Range | |
598 | // gain = ----------------- * Energy_deposited_per_MIP | |
599 | // ADC_channel_size | |
600 | // | |
601 | // is constant and the same for all strips. | |
68aba90a | 602 | // |
603 | // For the production we use the conversion measured in the NBI lab. | |
604 | // The total conversion is then: | |
50b9d194 | 605 | // |
606 | // gain = ADC / DAC | |
607 | // | |
608 | // EdepMip * count | |
609 | // => energy = ---------------- | |
610 | // gain * DACPerADC | |
611 | // | |
612 | // Parameters: | |
613 | // det Detector ID | |
614 | // rng Ring ID | |
615 | // sec Sector ID | |
616 | // rng Strip ID | |
50b9d194 | 617 | // counts Number of ADC counts over pedestal |
618 | // Return | |
619 | // The energy deposited in a single strip, or -1 in case of problems | |
68aba90a | 620 | // |
a9579262 | 621 | if (count <= 0) return 0; |
8f6ee336 | 622 | AliFMDParameters* param = AliFMDParameters::Instance(); |
50b9d194 | 623 | Float_t gain = param->GetPulseGain(det, rng, sec, str); |
68aba90a | 624 | // 'Tagging' bad gains as bad energy |
625 | if (gain < 0) { | |
50b9d194 | 626 | AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]", |
627 | gain, det, rng, sec, str)); | |
68aba90a | 628 | return -1; |
629 | } | |
50b9d194 | 630 | AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)", |
68aba90a | 631 | count, gain,param->GetDACPerMIP())); |
a9579262 | 632 | |
50b9d194 | 633 | Double_t edep = ((count * param->GetEdepMip()) |
634 | / (gain * param->GetDACPerMIP())); | |
faf80567 | 635 | return edep; |
636 | } | |
637 | ||
638 | //____________________________________________________________________ | |
639 | Float_t | |
640 | AliFMDReconstructor::Adc2Energy(UShort_t det, | |
641 | Char_t rng, | |
642 | UShort_t sec, | |
643 | UShort_t str, | |
644 | Float_t eta, | |
645 | UShort_t count) const | |
646 | { | |
647 | // Converts number of ADC counts to energy deposited. | |
648 | // Note, that this member function can be overloaded by derived | |
649 | // classes to do strip-specific look-ups in databases or the like, | |
650 | // to find the proper gain for a strip. | |
651 | // | |
652 | // In the first simple version, we calculate the energy deposited as | |
653 | // | |
654 | // EnergyDeposited = cos(theta) * gain * count | |
655 | // | |
656 | // where | |
657 | // | |
658 | // Pre_amp_MIP_Range | |
659 | // gain = ----------------- * Energy_deposited_per_MIP | |
660 | // ADC_channel_size | |
661 | // | |
662 | // is constant and the same for all strips. | |
663 | // | |
664 | // For the production we use the conversion measured in the NBI lab. | |
665 | // The total conversion is then: | |
666 | // | |
667 | // gain = ADC / DAC | |
668 | // | |
669 | // EdepMip * count | |
670 | // => energy = ---------------- | |
671 | // gain * DACPerADC | |
672 | // | |
673 | // Parameters: | |
674 | // det Detector ID | |
675 | // rng Ring ID | |
676 | // sec Sector ID | |
677 | // rng Strip ID | |
678 | // eta Psuedo-rapidity | |
679 | // counts Number of ADC counts over pedestal | |
680 | // Return | |
681 | // The energy deposited in a single strip, or -1 in case of problems | |
682 | // | |
683 | Double_t edep = Adc2Energy(det, rng, sec, str, count); | |
684 | ||
9684be2f | 685 | if (fDiagStep2) fDiagStep2->Fill(count, edep); |
a9579262 | 686 | if (fAngleCorrect) { |
9684be2f | 687 | Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); |
688 | Double_t corr = TMath::Abs(TMath::Cos(theta)); | |
689 | Double_t cedep = corr * edep; | |
f95a63c4 | 690 | AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", |
9684be2f | 691 | edep, corr, cedep, eta, theta)); |
692 | if (fDiagStep3) fDiagStep3->Fill(edep, cedep); | |
693 | edep = cedep; | |
a9579262 | 694 | } |
8f6ee336 | 695 | return edep; |
696 | } | |
697 | ||
698 | //____________________________________________________________________ | |
699 | Float_t | |
50b9d194 | 700 | AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/, |
701 | Char_t /*rng*/, | |
702 | UShort_t /*sec*/, | |
703 | UShort_t /*str*/, | |
704 | Float_t edep) const | |
8f6ee336 | 705 | { |
706 | // Converts an energy signal to number of particles. | |
707 | // Note, that this member function can be overloaded by derived | |
708 | // classes to do strip-specific look-ups in databases or the like, | |
709 | // to find the proper gain for a strip. | |
710 | // | |
711 | // In this simple version, we calculate the multiplicity as | |
712 | // | |
713 | // multiplicity = Energy_deposited / Energy_deposited_per_MIP | |
714 | // | |
715 | // where | |
716 | // | |
717 | // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness | |
718 | // | |
719 | // is constant and the same for all strips | |
50b9d194 | 720 | // |
721 | // Parameters: | |
722 | // det Detector ID | |
723 | // rng Ring ID | |
724 | // sec Sector ID | |
725 | // rng Strip ID | |
726 | // edep Energy deposited in a single strip | |
727 | // Return | |
728 | // The "bare" multiplicity corresponding to the energy deposited | |
8f6ee336 | 729 | AliFMDParameters* param = AliFMDParameters::Instance(); |
730 | Double_t edepMIP = param->GetEdepMip(); | |
731 | Float_t mult = edep / edepMIP; | |
68aba90a | 732 | #if 0 |
8f6ee336 | 733 | if (edep > 0) |
f95a63c4 | 734 | AliFMDDebug(15, ("Translating energy %f to multiplicity via " |
8f6ee336 | 735 | "divider %f->%f", edep, edepMIP, mult)); |
68aba90a | 736 | #endif |
9684be2f | 737 | if (fDiagStep4) fDiagStep4->Fill(edep, mult); |
8f6ee336 | 738 | return mult; |
739 | } | |
740 | ||
741 | //____________________________________________________________________ | |
742 | void | |
50b9d194 | 743 | AliFMDReconstructor::PhysicalCoordinates(UShort_t det, |
744 | Char_t rng, | |
745 | UShort_t sec, | |
746 | UShort_t str, | |
8f6ee336 | 747 | Float_t& eta, |
748 | Float_t& phi) const | |
749 | { | |
750 | // Get the eta and phi of a digit | |
751 | // | |
50b9d194 | 752 | // Parameters: |
753 | // det Detector ID | |
754 | // rng Ring ID | |
755 | // sec Sector ID | |
756 | // rng Strip ID | |
757 | // eta On return, contains the psuedo-rapidity of the strip | |
758 | // phi On return, contains the azimuthal angle of the strip | |
759 | // | |
9b48326f | 760 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
bf000c32 | 761 | Double_t x, y, z, r, theta; |
50b9d194 | 762 | geom->Detector2XYZ(det, rng, sec, str, x, y, z); |
bf000c32 | 763 | // Correct for vertex offset. |
8161c5f7 | 764 | z -= fCurrentVertex; |
bf000c32 | 765 | phi = TMath::ATan2(y, x); |
766 | r = TMath::Sqrt(y * y + x * x); | |
767 | theta = TMath::ATan2(r, z); | |
768 | eta = -TMath::Log(TMath::Tan(theta / 2)); | |
8f6ee336 | 769 | } |
770 | ||
771 | ||
772 | ||
4347b38f | 773 | //____________________________________________________________________ |
774 | void | |
1a1fdef7 | 775 | AliFMDReconstructor::FillESD(TTree* /* digitsTree */, |
776 | TTree* /* clusterTree */, | |
af885e0f | 777 | AliESDEvent* esd) const |
121a60bd | 778 | { |
42403906 | 779 | // nothing to be done |
69b696b9 | 780 | // FIXME: The vertex may not be known when Reconstruct is executed, |
781 | // so we may have to move some of that member function here. | |
f95a63c4 | 782 | AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); |
8f6ee336 | 783 | // fESDObj->Print(); |
784 | ||
50b9d194 | 785 | Double_t oldVz = fCurrentVertex; |
8983e5ae | 786 | GetVertex(esd); |
50b9d194 | 787 | if (fVertexType != kNoVertex) { |
788 | AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)", | |
789 | fCurrentVertex, oldVz)); | |
790 | AliFMDESDRevertexer revertexer; | |
791 | revertexer.Revertex(fESDObj, fCurrentVertex); | |
792 | } | |
793 | ||
8f6ee336 | 794 | if (esd) { |
f95a63c4 | 795 | AliFMDDebug(2, ("Writing FMD data to ESD tree")); |
8f6ee336 | 796 | esd->SetFMDData(fESDObj); |
a3537838 | 797 | } |
9684be2f | 798 | |
799 | if (!fDiagnostics || !esd) return; | |
800 | static bool first = true; | |
69893a66 | 801 | // This is most likely NOT the event number you'd like to use. It |
802 | // has nothing to do with the 'real' event number. | |
803 | // - That's OK. We just use it for the name of the directory - | |
804 | // nothing else. Christian | |
805 | Int_t evno = esd->GetEventNumberInFile(); | |
3991ca94 | 806 | AliFMDDebug(3, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); |
9684be2f | 807 | TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); |
808 | first = false; | |
809 | f.cd(); | |
810 | TDirectory* d = f.mkdir(Form("%03d", evno), | |
811 | Form("Diagnostics histograms for event # %d", evno)); | |
812 | d->cd(); | |
813 | if (fDiagStep1) fDiagStep1->Write(); | |
814 | if (fDiagStep2) fDiagStep2->Write(); | |
815 | if (fDiagStep3) fDiagStep3->Write(); | |
816 | if (fDiagStep4) fDiagStep4->Write(); | |
817 | if (fDiagAll) fDiagAll->Write(); | |
818 | d->Write(); | |
819 | f.Write(); | |
820 | f.Close(); | |
821 | ||
822 | if (fDiagStep1) fDiagStep1->Reset(); | |
823 | if (fDiagStep2) fDiagStep2->Reset(); | |
824 | if (fDiagStep3) fDiagStep3->Reset(); | |
825 | if (fDiagStep4) fDiagStep4->Reset(); | |
826 | if (fDiagAll) fDiagAll->Reset(); | |
121a60bd | 827 | } |
828 | ||
ddaa8027 | 829 | //____________________________________________________________________ |
830 | void | |
831 | AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, | |
832 | AliESDEvent* esd) const | |
833 | { | |
834 | TTree* dummy = 0; | |
835 | FillESD(dummy, clusterTree, esd); | |
836 | } | |
42403906 | 837 | //____________________________________________________________________ |
838 | // | |
839 | // EOF | |
840 | // |