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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 | **************************************************************************/ | |
15 | /* $Id$ */ | |
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 | */ | |
21 | //____________________________________________________________________ | |
22 | // | |
23 | // This is a class that constructs AliFMDRecPoint objects from of Digits | |
24 | // This class reads either digits from a TClonesArray or raw data from | |
25 | // a DDL file (or similar), and stores the read ADC counts in an | |
26 | // internal cache (fAdcs). The rec-points are made via the naiive | |
27 | // method. | |
28 | // | |
29 | //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia | |
30 | // Latest changes by Christian Holm Christensen <cholm@nbi.dk> | |
31 | // | |
32 | // | |
33 | //____________________________________________________________________ | |
34 | ||
35 | // #include <AliLog.h> // ALILOG_H | |
36 | // #include <AliRun.h> // ALIRUN_H | |
37 | #include "AliFMDDebug.h" | |
38 | #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H | |
39 | #include "AliFMDParameters.h" // ALIFMDPARAMETERS_H | |
40 | #include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H | |
41 | #include "AliFMDDigit.h" // ALIFMDDIGIT_H | |
42 | #include "AliFMDSDigit.h" // ALIFMDDIGIT_H | |
43 | #include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H | |
44 | #include "AliFMDRecoParam.h" // ALIFMDRECOPARAM_H | |
45 | #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H | |
46 | #include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H | |
47 | #include "AliESDEvent.h" // ALIESDEVENT_H | |
48 | #include "AliESDVertex.h" // ALIESDVERTEX_H | |
49 | #include "AliESDTZERO.h" // ALIESDVERTEX_H | |
50 | #include <AliESDFMD.h> // ALIESDFMD_H | |
51 | #include <TMath.h> | |
52 | #include <TH1.h> | |
53 | #include <TH2.h> | |
54 | #include <TFile.h> | |
55 | #include <climits> | |
56 | #include "AliFMDESDRevertexer.h" | |
57 | ||
58 | ||
59 | class AliRawReader; | |
60 | ||
61 | //____________________________________________________________________ | |
62 | ClassImp(AliFMDReconstructor) | |
63 | #if 0 | |
64 | ; // This is here to keep Emacs for indenting the next line | |
65 | #endif | |
66 | ||
67 | //____________________________________________________________________ | |
68 | AliFMDReconstructor::AliFMDReconstructor() | |
69 | : AliReconstructor(), | |
70 | fMult(0x0), | |
71 | fNMult(0), | |
72 | fTreeR(0x0), | |
73 | fCurrentVertex(0), | |
74 | fESDObj(0x0), | |
75 | fNoiseFactor(0), | |
76 | fAngleCorrect(kTRUE), | |
77 | fVertexType(kNoVertex), | |
78 | fESD(0x0), | |
79 | fDiagnostics(kTRUE), | |
80 | fDiagStep1(0), | |
81 | fDiagStep2(0), | |
82 | fDiagStep3(0), | |
83 | fDiagStep4(0), | |
84 | fDiagAll(0) | |
85 | { | |
86 | // Make a new FMD reconstructor object - default CTOR. | |
87 | SetNoiseFactor(); | |
88 | SetAngleCorrect(); | |
89 | if (AliDebugLevel() > 0) fDiagnostics = kTRUE; | |
90 | for(Int_t det = 1; det<=3; det++) { | |
91 | fZS[det-1] = kFALSE; | |
92 | fZSFactor[det-1] = 0; | |
93 | } | |
94 | } | |
95 | ||
96 | //____________________________________________________________________ | |
97 | AliFMDReconstructor::~AliFMDReconstructor() | |
98 | { | |
99 | // Destructor | |
100 | if (fMult) fMult->Delete(); | |
101 | if (fMult) delete fMult; | |
102 | if (fESDObj) delete fESDObj; | |
103 | } | |
104 | ||
105 | //____________________________________________________________________ | |
106 | void | |
107 | AliFMDReconstructor::Init() | |
108 | { | |
109 | // Initialize the reconstructor | |
110 | ||
111 | // Initialize the geometry | |
112 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); | |
113 | geom->Init(); | |
114 | geom->InitTransformations(); | |
115 | ||
116 | // Initialize the parameters | |
117 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
118 | param->Init(); | |
119 | ||
120 | // Current vertex position | |
121 | fCurrentVertex = 0; | |
122 | // Create array of reconstructed strip multiplicities | |
123 | fMult = new TClonesArray("AliFMDRecPoint", 51200); | |
124 | // Create ESD output object | |
125 | fESDObj = new AliESDFMD; | |
126 | ||
127 | // Check if we need diagnostics histograms | |
128 | if (!fDiagnostics) return; | |
129 | AliInfo("Making diagnostics histograms"); | |
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"); | |
156 | } | |
157 | ||
158 | //____________________________________________________________________ | |
159 | void | |
160 | AliFMDReconstructor::ConvertDigits(AliRawReader* reader, | |
161 | TTree* digitsTree) const | |
162 | { | |
163 | // Convert Raw digits to AliFMDDigit's in a tree | |
164 | AliFMDDebug(1, ("Reading raw data into digits tree")); | |
165 | AliFMDRawReader rawRead(reader, digitsTree); | |
166 | // rawRead.SetSampleRate(fFMD->GetSampleRate()); | |
167 | rawRead.Exec(); | |
168 | AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); | |
169 | for (size_t i = 1; i <= 3; i++) { | |
170 | fZS[i] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); | |
171 | fZSFactor[i] = rawRead.NoiseFactor(map->Detector2DDL(i)); | |
172 | } | |
173 | } | |
174 | ||
175 | //____________________________________________________________________ | |
176 | void | |
177 | AliFMDReconstructor::GetVertex(AliESDEvent* esd) const | |
178 | { | |
179 | // Return the vertex to use. | |
180 | // This is obtained from the ESD object. | |
181 | // If not found, a warning is issued. | |
182 | fVertexType = kNoVertex; | |
183 | fCurrentVertex = 0; | |
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; | |
203 | } | |
204 | AliWarning("Didn't get any vertex from ESD or generator"); | |
205 | } | |
206 | ||
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 | ||
243 | ||
244 | //____________________________________________________________________ | |
245 | void | |
246 | AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const | |
247 | { | |
248 | // Reconstruct directly from raw data (no intermediate output on | |
249 | // digit tree or rec point tree). | |
250 | // | |
251 | // Parameters: | |
252 | // reader Raw event reader | |
253 | // ctree Not used. | |
254 | AliFMDDebug(1, ("Reconstructing from raw reader")); | |
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; | |
261 | ||
262 | UseRecoParam(kTRUE); | |
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 | } | |
271 | UseRecoParam(kFALSE); | |
272 | ||
273 | } | |
274 | ||
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 | ||
292 | UseRecoParam(kTRUE); | |
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 | } | |
302 | UseRecoParam(kFALSE); | |
303 | } | |
304 | ||
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. | |
314 | // | |
315 | // Parameters: | |
316 | // digitsTree Pointer to a tree containing digits | |
317 | // clusterTree Pointer to output tree | |
318 | // | |
319 | AliFMDDebug(1, ("Reconstructing from digits in a tree")); | |
320 | GetVertex(fESD); | |
321 | ||
322 | static TClonesArray* digits = new TClonesArray("AliFMDDigit"); | |
323 | TBranch *digitBranch = digitsTree->GetBranch("FMD"); | |
324 | if (!digitBranch) { | |
325 | Error("Exec", "No digit branch for the FMD found"); | |
326 | return; | |
327 | } | |
328 | // TClonesArray* digits = new TClonesArray("AliFMDDigit"); | |
329 | digitBranch->SetAddress(&digits); | |
330 | ||
331 | if (fMult) fMult->Clear(); | |
332 | if (fESDObj) fESDObj->Clear(); | |
333 | ||
334 | fNMult = 0; | |
335 | fTreeR = clusterTree; | |
336 | fTreeR->Branch("FMD", &fMult); | |
337 | ||
338 | AliFMDDebug(5, ("Getting entry 0 from digit branch")); | |
339 | digitBranch->GetEntry(0); | |
340 | ||
341 | AliFMDDebug(5, ("Processing digits")); | |
342 | UseRecoParam(kTRUE); | |
343 | ProcessDigits(digits); | |
344 | UseRecoParam(kFALSE); | |
345 | ||
346 | Int_t written = clusterTree->Fill(); | |
347 | AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); | |
348 | digits->Delete(); | |
349 | // delete digits; | |
350 | } | |
351 | ||
352 | ||
353 | //____________________________________________________________________ | |
354 | void | |
355 | AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const | |
356 | { | |
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. | |
360 | // | |
361 | // Parameters: | |
362 | // digits Array of digits | |
363 | // | |
364 | Int_t nDigits = digits->GetEntries(); | |
365 | AliFMDDebug(2, ("Got %d digits", nDigits)); | |
366 | fESDObj->SetNoiseFactor(fNoiseFactor); | |
367 | fESDObj->SetAngleCorrected(fAngleCorrect); | |
368 | for (Int_t i = 0; i < nDigits; i++) { | |
369 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
370 | if (!digit) continue; | |
371 | ProcessDigit(digit); | |
372 | } | |
373 | } | |
374 | ||
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(); | |
384 | if (adc < 0) | |
385 | digit->Print(); | |
386 | ProcessSignal(det, rng, sec, str, adc); | |
387 | } | |
388 | ||
389 | //____________________________________________________________________ | |
390 | void | |
391 | AliFMDReconstructor::ProcessSignal(UShort_t det, | |
392 | Char_t rng, | |
393 | UShort_t sec, | |
394 | UShort_t str, | |
395 | Short_t adc) const | |
396 | { | |
397 | // Process the signal from a single strip | |
398 | // | |
399 | // Parameters: | |
400 | // det Detector ID | |
401 | // rng Ring ID | |
402 | // sec Sector ID | |
403 | // rng Strip ID | |
404 | // adc ADC counts | |
405 | // | |
406 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
407 | // Check that the strip is not marked as dead | |
408 | if (param->IsDead(det, rng, sec, str)) { | |
409 | AliFMDDebug(1, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
410 | return; | |
411 | } | |
412 | ||
413 | // digit->Print(); | |
414 | // Get eta and phi | |
415 | Float_t eta, phi; | |
416 | PhysicalCoordinates(det, rng, sec, str, eta, phi); | |
417 | ||
418 | // Substract pedestal. | |
419 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
420 | if(counts == USHRT_MAX) return; | |
421 | ||
422 | // Gain match digits. | |
423 | Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts); | |
424 | // Get rid of nonsense energy | |
425 | if(edep < 0) return; | |
426 | ||
427 | // Make rough multiplicity | |
428 | Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep); | |
429 | // Get rid of nonsense mult | |
430 | if (mult > 20) { | |
431 | AliWarning(Form("The mutliplicity in FMD%d%c[%2d,%3d]=%f > 20 " | |
432 | "(ADC: %d, Energy: %f)", det, rng, sec, str, mult, | |
433 | counts, edep)); | |
434 | } | |
435 | if (mult < 0) return; | |
436 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d]: " | |
437 | "ADC: %d, Counts: %d, Energy: %f, Mult: %f", | |
438 | det, rng, sec, str, adc, counts, edep, mult)); | |
439 | ||
440 | // Create a `RecPoint' on the output branch. | |
441 | if (fMult) { | |
442 | AliFMDRecPoint* m = | |
443 | new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str, | |
444 | eta, phi, edep, mult); | |
445 | (void)m; // Suppress warnings about unused variables. | |
446 | fNMult++; | |
447 | } | |
448 | ||
449 | fESDObj->SetMultiplicity(det, rng, sec, str, mult); | |
450 | fESDObj->SetEta(det, rng, sec, str, eta); | |
451 | ||
452 | if (fDiagAll) fDiagAll->Fill(adc, mult); | |
453 | ||
454 | } | |
455 | ||
456 | //____________________________________________________________________ | |
457 | void | |
458 | AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits, | |
459 | UShort_t det, | |
460 | Char_t rng, | |
461 | UShort_t sec, | |
462 | UShort_t str, | |
463 | UShort_t /* sam */, | |
464 | Short_t adc) const | |
465 | { | |
466 | // Process the signal from a single strip | |
467 | // | |
468 | // Parameters: | |
469 | // det Detector ID | |
470 | // rng Ring ID | |
471 | // sec Sector ID | |
472 | // rng Strip ID | |
473 | // adc ADC counts | |
474 | // | |
475 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
476 | // Check that the strip is not marked as dead | |
477 | if (param->IsDead(det, rng, sec, str)) { | |
478 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
479 | return; | |
480 | } | |
481 | ||
482 | // Substract pedestal. | |
483 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
484 | if(counts == USHRT_MAX || counts == 0) return; | |
485 | ||
486 | // Gain match digits. | |
487 | Double_t edep = Adc2Energy(det, rng, sec, str, counts); | |
488 | // Get rid of nonsense energy | |
489 | if(edep < 0) return; | |
490 | ||
491 | Int_t n = sdigits->GetEntriesFast(); | |
492 | // AliFMDSDigit* sdigit = | |
493 | new ((*sdigits)[n]) | |
494 | AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts); | |
495 | // sdigit->SetCount(sam, counts); | |
496 | } | |
497 | ||
498 | //____________________________________________________________________ | |
499 | UShort_t | |
500 | AliFMDReconstructor::SubtractPedestal(UShort_t det, | |
501 | Char_t rng, | |
502 | UShort_t sec, | |
503 | UShort_t str, | |
504 | UShort_t adc, | |
505 | Float_t noiseFactor, | |
506 | Bool_t zsEnabled, | |
507 | UShort_t zsNoiseFactor) const | |
508 | { | |
509 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
510 | Float_t ped = (zsEnabled ? 0 : | |
511 | param->GetPedestal(det, rng, sec, str)); | |
512 | Float_t noise = param->GetPedestalWidth(det, rng, sec, str); | |
513 | if(ped < 0 || noise < 0) { | |
514 | AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) " | |
515 | "for FMD%d%c[%02d,%03d]", | |
516 | ped, noise, det, rng, sec, str)); | |
517 | return USHRT_MAX; | |
518 | } | |
519 | AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d " | |
520 | "(%s w/factor %d, noise factor %f, " | |
521 | "pedestal %8.2f+/-%8.2f)", | |
522 | det, rng, sec, str, adc, | |
523 | (zsEnabled ? "zs'ed" : "straight"), | |
524 | zsNoiseFactor, noiseFactor, ped, noise)); | |
525 | ||
526 | Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped); | |
527 | counts = TMath::Max(Int_t(counts), 0); | |
528 | // Calculate the noise factor for suppressing remenants of the noise | |
529 | // peak. If we have done on-line zero suppression, we only check | |
530 | // for noise signals that are larger than the suppressed noise. If | |
531 | // the noise factor used on line is larger than the factor used | |
532 | // here, we do not do this check at all. | |
533 | // | |
534 | // For example: | |
535 | // Online factor | Read factor | Result | |
536 | // ---------------+--------------+------------------------------- | |
537 | // 2 | 3 | Check if signal > 1 * noise | |
538 | // 3 | 3 | Check if signal > 0 | |
539 | // 3 | 2 | Check if signal > 0 | |
540 | // | |
541 | // In this way, we make sure that we do not suppress away too much | |
542 | // data, and that the read-factor is the most stringent cut. | |
543 | Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0)); | |
544 | if (counts < noise * nf) counts = 0; | |
545 | if (counts > 0) AliDebugClass(15, "Got a hit strip"); | |
546 | ||
547 | UShort_t ret = counts < 0 ? 0 : counts; | |
548 | return ret; | |
549 | } | |
550 | ||
551 | ||
552 | //____________________________________________________________________ | |
553 | UShort_t | |
554 | AliFMDReconstructor::SubtractPedestal(UShort_t det, | |
555 | Char_t rng, | |
556 | UShort_t sec, | |
557 | UShort_t str, | |
558 | Short_t adc) const | |
559 | { | |
560 | // Member function to subtract the pedestal from a digit | |
561 | // | |
562 | // Parameters: | |
563 | // det Detector ID | |
564 | // rng Ring ID | |
565 | // sec Sector ID | |
566 | // rng Strip ID | |
567 | // adc # of ADC counts | |
568 | // Return: | |
569 | // Pedestal subtracted signal or USHRT_MAX in case of problems | |
570 | // | |
571 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc, | |
572 | fNoiseFactor, fZS[det-1], | |
573 | fZSFactor[det-1]); | |
574 | if (fDiagStep1) fDiagStep1->Fill(adc, counts); | |
575 | ||
576 | return counts; | |
577 | } | |
578 | ||
579 | //____________________________________________________________________ | |
580 | Float_t | |
581 | AliFMDReconstructor::Adc2Energy(UShort_t det, | |
582 | Char_t rng, | |
583 | UShort_t sec, | |
584 | UShort_t str, | |
585 | UShort_t count) const | |
586 | { | |
587 | // Converts number of ADC counts to energy deposited. | |
588 | // Note, that this member function can be overloaded by derived | |
589 | // classes to do strip-specific look-ups in databases or the like, | |
590 | // to find the proper gain for a strip. | |
591 | // | |
592 | // In the first simple version, we calculate the energy deposited as | |
593 | // | |
594 | // EnergyDeposited = cos(theta) * gain * count | |
595 | // | |
596 | // where | |
597 | // | |
598 | // Pre_amp_MIP_Range | |
599 | // gain = ----------------- * Energy_deposited_per_MIP | |
600 | // ADC_channel_size | |
601 | // | |
602 | // is constant and the same for all strips. | |
603 | // | |
604 | // For the production we use the conversion measured in the NBI lab. | |
605 | // The total conversion is then: | |
606 | // | |
607 | // gain = ADC / DAC | |
608 | // | |
609 | // EdepMip * count | |
610 | // => energy = ---------------- | |
611 | // gain * DACPerADC | |
612 | // | |
613 | // Parameters: | |
614 | // det Detector ID | |
615 | // rng Ring ID | |
616 | // sec Sector ID | |
617 | // rng Strip ID | |
618 | // counts Number of ADC counts over pedestal | |
619 | // Return | |
620 | // The energy deposited in a single strip, or -1 in case of problems | |
621 | // | |
622 | if (count <= 0) return 0; | |
623 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
624 | Float_t gain = param->GetPulseGain(det, rng, sec, str); | |
625 | // 'Tagging' bad gains as bad energy | |
626 | if (gain < 0) { | |
627 | AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]", | |
628 | gain, det, rng, sec, str)); | |
629 | return -1; | |
630 | } | |
631 | AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)", | |
632 | count, gain,param->GetDACPerMIP())); | |
633 | ||
634 | Double_t edep = ((count * param->GetEdepMip()) | |
635 | / (gain * param->GetDACPerMIP())); | |
636 | return edep; | |
637 | } | |
638 | ||
639 | //____________________________________________________________________ | |
640 | Float_t | |
641 | AliFMDReconstructor::Adc2Energy(UShort_t det, | |
642 | Char_t rng, | |
643 | UShort_t sec, | |
644 | UShort_t str, | |
645 | Float_t eta, | |
646 | UShort_t count) const | |
647 | { | |
648 | // Converts number of ADC counts to energy deposited. | |
649 | // Note, that this member function can be overloaded by derived | |
650 | // classes to do strip-specific look-ups in databases or the like, | |
651 | // to find the proper gain for a strip. | |
652 | // | |
653 | // In the first simple version, we calculate the energy deposited as | |
654 | // | |
655 | // EnergyDeposited = cos(theta) * gain * count | |
656 | // | |
657 | // where | |
658 | // | |
659 | // Pre_amp_MIP_Range | |
660 | // gain = ----------------- * Energy_deposited_per_MIP | |
661 | // ADC_channel_size | |
662 | // | |
663 | // is constant and the same for all strips. | |
664 | // | |
665 | // For the production we use the conversion measured in the NBI lab. | |
666 | // The total conversion is then: | |
667 | // | |
668 | // gain = ADC / DAC | |
669 | // | |
670 | // EdepMip * count | |
671 | // => energy = ---------------- | |
672 | // gain * DACPerADC | |
673 | // | |
674 | // Parameters: | |
675 | // det Detector ID | |
676 | // rng Ring ID | |
677 | // sec Sector ID | |
678 | // rng Strip ID | |
679 | // eta Psuedo-rapidity | |
680 | // counts Number of ADC counts over pedestal | |
681 | // Return | |
682 | // The energy deposited in a single strip, or -1 in case of problems | |
683 | // | |
684 | Double_t edep = Adc2Energy(det, rng, sec, str, count); | |
685 | ||
686 | if (fDiagStep2) fDiagStep2->Fill(count, edep); | |
687 | if (fAngleCorrect) { | |
688 | Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); | |
689 | Double_t corr = TMath::Abs(TMath::Cos(theta)); | |
690 | Double_t cedep = corr * edep; | |
691 | AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", | |
692 | edep, corr, cedep, eta, theta)); | |
693 | if (fDiagStep3) fDiagStep3->Fill(edep, cedep); | |
694 | edep = cedep; | |
695 | } | |
696 | return edep; | |
697 | } | |
698 | ||
699 | //____________________________________________________________________ | |
700 | Float_t | |
701 | AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/, | |
702 | Char_t /*rng*/, | |
703 | UShort_t /*sec*/, | |
704 | UShort_t /*str*/, | |
705 | Float_t edep) const | |
706 | { | |
707 | // Converts an energy signal to number of particles. | |
708 | // Note, that this member function can be overloaded by derived | |
709 | // classes to do strip-specific look-ups in databases or the like, | |
710 | // to find the proper gain for a strip. | |
711 | // | |
712 | // In this simple version, we calculate the multiplicity as | |
713 | // | |
714 | // multiplicity = Energy_deposited / Energy_deposited_per_MIP | |
715 | // | |
716 | // where | |
717 | // | |
718 | // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness | |
719 | // | |
720 | // is constant and the same for all strips | |
721 | // | |
722 | // Parameters: | |
723 | // det Detector ID | |
724 | // rng Ring ID | |
725 | // sec Sector ID | |
726 | // rng Strip ID | |
727 | // edep Energy deposited in a single strip | |
728 | // Return | |
729 | // The "bare" multiplicity corresponding to the energy deposited | |
730 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
731 | Double_t edepMIP = param->GetEdepMip(); | |
732 | Float_t mult = edep / edepMIP; | |
733 | #if 0 | |
734 | if (edep > 0) | |
735 | AliFMDDebug(15, ("Translating energy %f to multiplicity via " | |
736 | "divider %f->%f", edep, edepMIP, mult)); | |
737 | #endif | |
738 | if (fDiagStep4) fDiagStep4->Fill(edep, mult); | |
739 | return mult; | |
740 | } | |
741 | ||
742 | //____________________________________________________________________ | |
743 | void | |
744 | AliFMDReconstructor::PhysicalCoordinates(UShort_t det, | |
745 | Char_t rng, | |
746 | UShort_t sec, | |
747 | UShort_t str, | |
748 | Float_t& eta, | |
749 | Float_t& phi) const | |
750 | { | |
751 | // Get the eta and phi of a digit | |
752 | // | |
753 | // Parameters: | |
754 | // det Detector ID | |
755 | // rng Ring ID | |
756 | // sec Sector ID | |
757 | // rng Strip ID | |
758 | // eta On return, contains the psuedo-rapidity of the strip | |
759 | // phi On return, contains the azimuthal angle of the strip | |
760 | // | |
761 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); | |
762 | Double_t x, y, z, r, theta; | |
763 | geom->Detector2XYZ(det, rng, sec, str, x, y, z); | |
764 | // Correct for vertex offset. | |
765 | z -= fCurrentVertex; | |
766 | phi = TMath::ATan2(y, x); | |
767 | r = TMath::Sqrt(y * y + x * x); | |
768 | theta = TMath::ATan2(r, z); | |
769 | eta = -TMath::Log(TMath::Tan(theta / 2)); | |
770 | } | |
771 | ||
772 | ||
773 | ||
774 | //____________________________________________________________________ | |
775 | void | |
776 | AliFMDReconstructor::FillESD(TTree* /* digitsTree */, | |
777 | TTree* /* clusterTree */, | |
778 | AliESDEvent* esd) const | |
779 | { | |
780 | // nothing to be done | |
781 | // FIXME: The vertex may not be known when Reconstruct is executed, | |
782 | // so we may have to move some of that member function here. | |
783 | AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); | |
784 | // fESDObj->Print(); | |
785 | ||
786 | Double_t oldVz = fCurrentVertex; | |
787 | GetVertex(esd); | |
788 | if (fVertexType != kNoVertex) { | |
789 | AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)", | |
790 | fCurrentVertex, oldVz)); | |
791 | AliFMDESDRevertexer revertexer; | |
792 | revertexer.Revertex(fESDObj, fCurrentVertex); | |
793 | } | |
794 | ||
795 | if (esd) { | |
796 | AliFMDDebug(2, ("Writing FMD data to ESD tree")); | |
797 | esd->SetFMDData(fESDObj); | |
798 | } | |
799 | ||
800 | if (!fDiagnostics || !esd) return; | |
801 | static bool first = true; | |
802 | // This is most likely NOT the event number you'd like to use. It | |
803 | // has nothing to do with the 'real' event number. | |
804 | // - That's OK. We just use it for the name of the directory - | |
805 | // nothing else. Christian | |
806 | Int_t evno = esd->GetEventNumberInFile(); | |
807 | AliFMDDebug(3, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); | |
808 | TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); | |
809 | first = false; | |
810 | f.cd(); | |
811 | TDirectory* d = f.mkdir(Form("%03d", evno), | |
812 | Form("Diagnostics histograms for event # %d", evno)); | |
813 | d->cd(); | |
814 | if (fDiagStep1) fDiagStep1->Write(); | |
815 | if (fDiagStep2) fDiagStep2->Write(); | |
816 | if (fDiagStep3) fDiagStep3->Write(); | |
817 | if (fDiagStep4) fDiagStep4->Write(); | |
818 | if (fDiagAll) fDiagAll->Write(); | |
819 | d->Write(); | |
820 | f.Write(); | |
821 | f.Close(); | |
822 | ||
823 | if (fDiagStep1) fDiagStep1->Reset(); | |
824 | if (fDiagStep2) fDiagStep2->Reset(); | |
825 | if (fDiagStep3) fDiagStep3->Reset(); | |
826 | if (fDiagStep4) fDiagStep4->Reset(); | |
827 | if (fDiagAll) fDiagAll->Reset(); | |
828 | } | |
829 | ||
830 | //____________________________________________________________________ | |
831 | void | |
832 | AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, | |
833 | AliESDEvent* esd) const | |
834 | { | |
835 | TTree* dummy = 0; | |
836 | FillESD(dummy, clusterTree, esd); | |
837 | } | |
838 | //____________________________________________________________________ | |
839 | // | |
840 | // EOF | |
841 | // |