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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> |
50b9d194 | 56 | // Import revertexer into a private namespace (to prevent conflicts) |
57 | namespace { | |
58 | # include "AliFMDESDRevertexer.h" | |
59 | } | |
60 | ||
68aba90a | 61 | |
02a27b50 | 62 | class AliRawReader; |
4347b38f | 63 | |
64 | //____________________________________________________________________ | |
925e6570 | 65 | ClassImp(AliFMDReconstructor) |
1a1fdef7 | 66 | #if 0 |
67 | ; // This is here to keep Emacs for indenting the next line | |
68 | #endif | |
37c55dc0 | 69 | |
4347b38f | 70 | //____________________________________________________________________ |
71 | AliFMDReconstructor::AliFMDReconstructor() | |
72 | : AliReconstructor(), | |
e9fd1e20 | 73 | fMult(0x0), |
74 | fNMult(0), | |
75 | fTreeR(0x0), | |
76 | fCurrentVertex(0), | |
77 | fESDObj(0x0), | |
9684be2f | 78 | fNoiseFactor(0), |
79 | fAngleCorrect(kTRUE), | |
80 | fVertexType(kNoVertex), | |
9684be2f | 81 | fESD(0x0), |
68aba90a | 82 | fDiagnostics(kTRUE), |
9684be2f | 83 | fDiagStep1(0), |
84 | fDiagStep2(0), | |
85 | fDiagStep3(0), | |
86 | fDiagStep4(0), | |
87 | fDiagAll(0) | |
4347b38f | 88 | { |
8f6ee336 | 89 | // Make a new FMD reconstructor object - default CTOR. |
a9579262 | 90 | SetNoiseFactor(); |
91 | SetAngleCorrect(); | |
9b98d361 | 92 | if (AliDebugLevel() > 0) fDiagnostics = kTRUE; |
030d93c1 | 93 | for(Int_t det = 1; det<=3; det++) { |
94 | fZS[det-1] = kFALSE; | |
95 | fZSFactor[det-1] = 0; | |
96 | } | |
4347b38f | 97 | } |
98 | ||
42403906 | 99 | |
100 | //____________________________________________________________________ | |
101 | AliFMDReconstructor::AliFMDReconstructor(const AliFMDReconstructor& other) | |
8f6ee336 | 102 | : AliReconstructor(), |
103 | fMult(other.fMult), | |
e9fd1e20 | 104 | fNMult(other.fNMult), |
105 | fTreeR(other.fTreeR), | |
106 | fCurrentVertex(other.fCurrentVertex), | |
107 | fESDObj(other.fESDObj), | |
a9579262 | 108 | fNoiseFactor(other.fNoiseFactor), |
9684be2f | 109 | fAngleCorrect(other.fAngleCorrect), |
110 | fVertexType(other.fVertexType), | |
9684be2f | 111 | fESD(other.fESD), |
112 | fDiagnostics(other.fDiagnostics), | |
113 | fDiagStep1(other.fDiagStep1), | |
114 | fDiagStep2(other.fDiagStep2), | |
115 | fDiagStep3(other.fDiagStep3), | |
116 | fDiagStep4(other.fDiagStep4), | |
117 | fDiagAll(other.fDiagAll) | |
42403906 | 118 | { |
56b1929b | 119 | // Copy constructor |
42403906 | 120 | } |
121 | ||
122 | ||
123 | //____________________________________________________________________ | |
124 | AliFMDReconstructor& | |
125 | AliFMDReconstructor::operator=(const AliFMDReconstructor& other) | |
126 | { | |
56b1929b | 127 | // Assignment operator |
a9579262 | 128 | fMult = other.fMult; |
129 | fNMult = other.fNMult; | |
130 | fTreeR = other.fTreeR; | |
e9fd1e20 | 131 | fCurrentVertex = other.fCurrentVertex; |
a9579262 | 132 | fESDObj = other.fESDObj; |
a9579262 | 133 | fNoiseFactor = other.fNoiseFactor; |
134 | fAngleCorrect = other.fAngleCorrect; | |
9684be2f | 135 | fVertexType = other.fVertexType; |
9684be2f | 136 | fESD = other.fESD; |
137 | fDiagnostics = other.fDiagnostics; | |
138 | fDiagStep1 = other.fDiagStep1; | |
139 | fDiagStep2 = other.fDiagStep2; | |
140 | fDiagStep3 = other.fDiagStep3; | |
141 | fDiagStep4 = other.fDiagStep4; | |
142 | fDiagAll = other.fDiagAll; | |
42403906 | 143 | return *this; |
144 | } | |
56b1929b | 145 | |
146 | //____________________________________________________________________ | |
147 | AliFMDReconstructor::~AliFMDReconstructor() | |
148 | { | |
149 | // Destructor | |
8f6ee336 | 150 | if (fMult) fMult->Delete(); |
151 | if (fMult) delete fMult; | |
152 | if (fESDObj) delete fESDObj; | |
56b1929b | 153 | } |
4347b38f | 154 | |
155 | //____________________________________________________________________ | |
156 | void | |
d76c31f4 | 157 | AliFMDReconstructor::Init() |
1a1fdef7 | 158 | { |
159 | // Initialize the reconstructor | |
f011bd38 | 160 | |
bf000c32 | 161 | // Initialize the geometry |
9b48326f | 162 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
163 | geom->Init(); | |
164 | geom->InitTransformations(); | |
165 | ||
166 | // Initialize the parameters | |
167 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
168 | param->Init(); | |
bf000c32 | 169 | |
8f6ee336 | 170 | // Current vertex position |
1a1fdef7 | 171 | fCurrentVertex = 0; |
8f6ee336 | 172 | // Create array of reconstructed strip multiplicities |
bf000c32 | 173 | fMult = new TClonesArray("AliFMDRecPoint", 51200); |
8f6ee336 | 174 | // Create ESD output object |
175 | fESDObj = new AliESDFMD; | |
176 | ||
9684be2f | 177 | // Check if we need diagnostics histograms |
178 | if (!fDiagnostics) return; | |
9b98d361 | 179 | AliInfo("Making diagnostics histograms"); |
9684be2f | 180 | fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC", |
181 | 1024, -.5, 1023.5, 1024, -.5, 1023.5); | |
182 | fDiagStep1->SetDirectory(0); | |
183 | fDiagStep1->GetXaxis()->SetTitle("ADC (read)"); | |
184 | fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)", | |
185 | fNoiseFactor)); | |
186 | fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced", | |
187 | 1024, -.5, 1023.5, 100, 0, 2); | |
188 | fDiagStep2->SetDirectory(0); | |
189 | fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)"); | |
190 | fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]"); | |
191 | fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected", | |
192 | 100, 0., 2., 100, 0., 2.); | |
193 | fDiagStep3->SetDirectory(0); | |
194 | fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]"); | |
195 | fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
196 | fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced", | |
197 | 100, 0., 2., 100, -.1, 19.9); | |
198 | fDiagStep4->SetDirectory(0); | |
199 | fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
200 | fDiagStep4->GetYaxis()->SetTitle("Multiplicity"); | |
201 | fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced", | |
202 | 1024, -.5, 1023.5, 100, -.1, 19.9); | |
203 | fDiagAll->SetDirectory(0); | |
204 | fDiagAll->GetXaxis()->SetTitle("ADC (read)"); | |
205 | fDiagAll->GetYaxis()->SetTitle("Multiplicity"); | |
4347b38f | 206 | } |
dc8af42e | 207 | |
4347b38f | 208 | //____________________________________________________________________ |
209 | void | |
1a1fdef7 | 210 | AliFMDReconstructor::ConvertDigits(AliRawReader* reader, |
211 | TTree* digitsTree) const | |
212 | { | |
213 | // Convert Raw digits to AliFMDDigit's in a tree | |
faf80567 | 214 | AliFMDDebug(1, ("Reading raw data into digits tree")); |
1a1fdef7 | 215 | AliFMDRawReader rawRead(reader, digitsTree); |
216 | // rawRead.SetSampleRate(fFMD->GetSampleRate()); | |
217 | rawRead.Exec(); | |
5cf05dbb | 218 | AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); |
219 | for (size_t i = 1; i <= 3; i++) { | |
220 | fZS[i] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); | |
221 | fZSFactor[i] = rawRead.NoiseFactor(map->Detector2DDL(i)); | |
222 | } | |
4347b38f | 223 | } |
224 | ||
4347b38f | 225 | //____________________________________________________________________ |
226 | void | |
8983e5ae | 227 | AliFMDReconstructor::GetVertex(AliESDEvent* esd) const |
4347b38f | 228 | { |
97e94238 | 229 | // Return the vertex to use. |
230 | // This is obtained from the ESD object. | |
231 | // If not found, a warning is issued. | |
9684be2f | 232 | fVertexType = kNoVertex; |
233 | fCurrentVertex = 0; | |
8983e5ae | 234 | if (!esd) return; |
235 | ||
236 | const AliESDVertex* vertex = esd->GetPrimaryVertex(); | |
237 | if (!vertex) vertex = esd->GetPrimaryVertexSPD(); | |
238 | if (!vertex) vertex = esd->GetPrimaryVertexTPC(); | |
239 | if (!vertex) vertex = esd->GetVertex(); | |
240 | ||
241 | if (vertex) { | |
242 | AliFMDDebug(2, ("Got %s (%s) from ESD: %f", | |
243 | vertex->GetName(), vertex->GetTitle(), vertex->GetZv())); | |
244 | fCurrentVertex = vertex->GetZv(); | |
245 | fVertexType = kESDVertex; | |
246 | return; | |
247 | } | |
248 | else if (esd->GetESDTZERO()) { | |
249 | AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex())); | |
250 | fCurrentVertex = esd->GetT0zVertex(); | |
251 | fVertexType = kESDVertex; | |
252 | return; | |
a3537838 | 253 | } |
9684be2f | 254 | AliWarning("Didn't get any vertex from ESD or generator"); |
255 | } | |
256 | ||
818fff8d | 257 | //____________________________________________________________________ |
258 | Int_t | |
259 | AliFMDReconstructor::GetIdentifier() const | |
260 | { | |
261 | return AliReconstruction::GetDetIndex(GetDetectorName()); | |
262 | } | |
263 | ||
264 | //____________________________________________________________________ | |
265 | const AliFMDRecoParam* | |
266 | AliFMDReconstructor::GetParameters() const | |
267 | { | |
268 | Int_t iDet = 12; // GetIdentifier(); | |
269 | const AliDetectorRecoParam* params = AliReconstructor::GetRecoParam(iDet); | |
270 | if (!params || params->IsA() != AliFMDRecoParam::Class()) return 0; | |
271 | return static_cast<const AliFMDRecoParam*>(params); | |
272 | } | |
273 | ||
274 | //____________________________________________________________________ | |
275 | void | |
276 | AliFMDReconstructor::UseRecoParam(Bool_t set) const | |
277 | { | |
278 | static Float_t savedNoiseFactor = fNoiseFactor; | |
279 | static Bool_t savedAngleCorrect = fAngleCorrect; | |
280 | if (set) { | |
281 | const AliFMDRecoParam* params = GetParameters(); | |
282 | if (params) { | |
283 | fNoiseFactor = params->NoiseFactor(); | |
284 | fAngleCorrect = params->AngleCorrect(); | |
285 | } | |
286 | return; | |
287 | } | |
288 | fNoiseFactor = savedNoiseFactor; | |
289 | fAngleCorrect = savedAngleCorrect; | |
290 | } | |
291 | ||
292 | ||
9684be2f | 293 | |
ddaa8027 | 294 | //____________________________________________________________________ |
295 | void | |
50b9d194 | 296 | AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const |
ddaa8027 | 297 | { |
298 | // Reconstruct directly from raw data (no intermediate output on | |
299 | // digit tree or rec point tree). | |
50b9d194 | 300 | // |
ddaa8027 | 301 | // Parameters: |
302 | // reader Raw event reader | |
303 | // ctree Not used. | |
50b9d194 | 304 | AliFMDRawReader rawReader(reader, 0); |
305 | ||
306 | UShort_t det, sec, str, fac; | |
307 | Short_t adc, oldDet = -1; | |
308 | Bool_t zs; | |
309 | Char_t rng; | |
818fff8d | 310 | |
311 | UseRecoParam(kTRUE); | |
50b9d194 | 312 | while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) { |
313 | if (det != oldDet) { | |
314 | fZS[det-1] = zs; | |
315 | fZSFactor[det-1] = fac; | |
316 | oldDet = det; | |
317 | } | |
318 | ProcessSignal(det, rng, sec, str, adc); | |
319 | } | |
818fff8d | 320 | UseRecoParam(kFALSE); |
321 | ||
ddaa8027 | 322 | } |
323 | ||
faf80567 | 324 | //____________________________________________________________________ |
325 | void | |
326 | AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) const | |
327 | { | |
328 | // Reconstruct directly from raw data (no intermediate output on | |
329 | // digit tree or rec point tree). | |
330 | // | |
331 | // Parameters: | |
332 | // reader Raw event reader | |
333 | // ctree Not used. | |
334 | AliFMDRawReader rawReader(reader, 0); | |
335 | ||
336 | UShort_t det, sec, str, sam, rat, fac; | |
337 | Short_t adc, oldDet = -1; | |
338 | Bool_t zs; | |
339 | Char_t rng; | |
340 | ||
818fff8d | 341 | UseRecoParam(kTRUE); |
faf80567 | 342 | while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) { |
343 | if (!rawReader.SelectSample(sam, rat)) continue; | |
344 | if (det != oldDet) { | |
345 | fZS[det-1] = zs; | |
346 | fZSFactor[det-1] = fac; | |
347 | oldDet = det; | |
348 | } | |
349 | DigitizeSignal(sdigits, det, rng, sec, str, sam, adc); | |
350 | } | |
818fff8d | 351 | UseRecoParam(kFALSE); |
faf80567 | 352 | } |
353 | ||
9684be2f | 354 | //____________________________________________________________________ |
355 | void | |
356 | AliFMDReconstructor::Reconstruct(TTree* digitsTree, | |
357 | TTree* clusterTree) const | |
358 | { | |
359 | // Reconstruct event from digits in tree | |
360 | // Get the FMD branch holding the digits. | |
361 | // FIXME: The vertex may not be known yet, so we may have to move | |
362 | // some of this to FillESD. | |
50b9d194 | 363 | // |
364 | // Parameters: | |
365 | // digitsTree Pointer to a tree containing digits | |
366 | // clusterTree Pointer to output tree | |
367 | // | |
f95a63c4 | 368 | AliFMDDebug(2, ("Reconstructing from digits in a tree")); |
8983e5ae | 369 | GetVertex(fESD); |
b04d1f8e | 370 | |
1a1fdef7 | 371 | TBranch *digitBranch = digitsTree->GetBranch("FMD"); |
4347b38f | 372 | if (!digitBranch) { |
1a1fdef7 | 373 | Error("Exec", "No digit branch for the FMD found"); |
374 | return; | |
4347b38f | 375 | } |
0abe7182 | 376 | TClonesArray* digits = new TClonesArray("AliFMDDigit"); |
1a1fdef7 | 377 | digitBranch->SetAddress(&digits); |
4347b38f | 378 | |
8f6ee336 | 379 | if (fMult) fMult->Clear(); |
380 | if (fESDObj) fESDObj->Clear(); | |
381 | ||
382 | fNMult = 0; | |
383 | fTreeR = clusterTree; | |
384 | fTreeR->Branch("FMD", &fMult); | |
385 | ||
f95a63c4 | 386 | AliFMDDebug(5, ("Getting entry 0 from digit branch")); |
1a1fdef7 | 387 | digitBranch->GetEntry(0); |
388 | ||
faf80567 | 389 | AliFMDDebug(1, ("Processing digits")); |
818fff8d | 390 | UseRecoParam(kTRUE); |
e802be3e | 391 | ProcessDigits(digits); |
818fff8d | 392 | UseRecoParam(kFALSE); |
e802be3e | 393 | |
8f6ee336 | 394 | Int_t written = clusterTree->Fill(); |
f95a63c4 | 395 | AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); |
0abe7182 | 396 | digits->Delete(); |
397 | delete digits; | |
4347b38f | 398 | } |
1a1fdef7 | 399 | |
8f6ee336 | 400 | |
4347b38f | 401 | //____________________________________________________________________ |
e802be3e | 402 | void |
403 | AliFMDReconstructor::ProcessDigits(TClonesArray* digits) const | |
4347b38f | 404 | { |
69b696b9 | 405 | // For each digit, find the pseudo rapdity, azimuthal angle, and |
406 | // number of corrected ADC counts, and pass it on to the algorithms | |
407 | // used. | |
50b9d194 | 408 | // |
409 | // Parameters: | |
410 | // digits Array of digits | |
411 | // | |
e802be3e | 412 | Int_t nDigits = digits->GetEntries(); |
f95a63c4 | 413 | AliFMDDebug(1, ("Got %d digits", nDigits)); |
a9579262 | 414 | fESDObj->SetNoiseFactor(fNoiseFactor); |
415 | fESDObj->SetAngleCorrected(fAngleCorrect); | |
e802be3e | 416 | for (Int_t i = 0; i < nDigits; i++) { |
417 | AliFMDDigit* digit = static_cast<AliFMDDigit*>(digits->At(i)); | |
50b9d194 | 418 | if (!digit) continue; |
419 | ProcessDigit(digit); | |
420 | } | |
421 | } | |
8f6ee336 | 422 | |
50b9d194 | 423 | //____________________________________________________________________ |
424 | void | |
425 | AliFMDReconstructor::ProcessDigit(AliFMDDigit* digit) const | |
426 | { | |
427 | UShort_t det = digit->Detector(); | |
428 | Char_t rng = digit->Ring(); | |
429 | UShort_t sec = digit->Sector(); | |
430 | UShort_t str = digit->Strip(); | |
431 | Short_t adc = digit->Counts(); | |
432 | ||
433 | ProcessSignal(det, rng, sec, str, adc); | |
434 | } | |
435 | ||
436 | //____________________________________________________________________ | |
437 | void | |
438 | AliFMDReconstructor::ProcessSignal(UShort_t det, | |
439 | Char_t rng, | |
440 | UShort_t sec, | |
441 | UShort_t str, | |
442 | Short_t adc) const | |
443 | { | |
444 | // Process the signal from a single strip | |
445 | // | |
446 | // Parameters: | |
447 | // det Detector ID | |
448 | // rng Ring ID | |
449 | // sec Sector ID | |
450 | // rng Strip ID | |
451 | // adc ADC counts | |
452 | // | |
453 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
454 | // Check that the strip is not marked as dead | |
455 | if (param->IsDead(det, rng, sec, str)) { | |
456 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
457 | return; | |
458 | } | |
459 | ||
460 | // digit->Print(); | |
461 | // Get eta and phi | |
462 | Float_t eta, phi; | |
463 | PhysicalCoordinates(det, rng, sec, str, eta, phi); | |
4347b38f | 464 | |
50b9d194 | 465 | // Substract pedestal. |
466 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
467 | if(counts == USHRT_MAX) return; | |
468 | ||
8f6ee336 | 469 | // Gain match digits. |
50b9d194 | 470 | Double_t edep = Adc2Energy(det, rng, sec, str, eta, counts); |
471 | // Get rid of nonsense energy | |
472 | if(edep < 0) return; | |
473 | ||
474 | // Make rough multiplicity | |
475 | Double_t mult = Energy2Multiplicity(det, rng, sec, str, edep); | |
476 | // Get rid of nonsense mult | |
477 | if (mult < 0) return; | |
478 | AliFMDDebug(5, ("FMD%d%c[%2d,%3d]: " | |
479 | "ADC: %d, Counts: %d, Energy: %f, Mult: %f", | |
480 | det, rng, sec, str, adc, counts, edep, mult)); | |
481 | ||
482 | // Create a `RecPoint' on the output branch. | |
483 | if (fMult) { | |
484 | AliFMDRecPoint* m = | |
485 | new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str, | |
486 | eta, phi, edep, mult); | |
487 | (void)m; // Suppress warnings about unused variables. | |
488 | fNMult++; | |
4347b38f | 489 | } |
50b9d194 | 490 | |
491 | fESDObj->SetMultiplicity(det, rng, sec, str, mult); | |
492 | fESDObj->SetEta(det, rng, sec, str, eta); | |
493 | ||
494 | if (fDiagAll) fDiagAll->Fill(adc, mult); | |
495 | ||
4347b38f | 496 | } |
8f6ee336 | 497 | |
faf80567 | 498 | //____________________________________________________________________ |
499 | void | |
500 | AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits, | |
501 | UShort_t det, | |
502 | Char_t rng, | |
503 | UShort_t sec, | |
504 | UShort_t str, | |
505 | UShort_t /* sam */, | |
506 | Short_t adc) const | |
507 | { | |
508 | // Process the signal from a single strip | |
509 | // | |
510 | // Parameters: | |
511 | // det Detector ID | |
512 | // rng Ring ID | |
513 | // sec Sector ID | |
514 | // rng Strip ID | |
515 | // adc ADC counts | |
516 | // | |
517 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
518 | // Check that the strip is not marked as dead | |
519 | if (param->IsDead(det, rng, sec, str)) { | |
520 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
521 | return; | |
522 | } | |
523 | ||
524 | // Substract pedestal. | |
525 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
526 | if(counts == USHRT_MAX || counts == 0) return; | |
527 | ||
528 | // Gain match digits. | |
529 | Double_t edep = Adc2Energy(det, rng, sec, str, counts); | |
530 | // Get rid of nonsense energy | |
531 | if(edep < 0) return; | |
532 | ||
533 | Int_t n = sdigits->GetEntriesFast(); | |
534 | // AliFMDSDigit* sdigit = | |
535 | new ((*sdigits)[n]) | |
536 | AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts); | |
537 | // sdigit->SetCount(sam, counts); | |
538 | } | |
539 | ||
540 | //____________________________________________________________________ | |
541 | UShort_t | |
542 | AliFMDReconstructor::SubtractPedestal(UShort_t det, | |
543 | Char_t rng, | |
544 | UShort_t sec, | |
545 | UShort_t str, | |
546 | UShort_t adc, | |
547 | Float_t noiseFactor, | |
548 | Bool_t zsEnabled, | |
549 | UShort_t zsNoiseFactor) const | |
550 | { | |
551 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
552 | Float_t ped = (zsEnabled ? 0 : | |
553 | param->GetPedestal(det, rng, sec, str)); | |
554 | Float_t noise = param->GetPedestalWidth(det, rng, sec, str); | |
555 | if(ped < 0 || noise < 0) { | |
556 | AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) " | |
557 | "for FMD%d%c[%02d,%03d]", | |
558 | ped, noise, det, rng, sec, str)); | |
559 | return USHRT_MAX; | |
560 | } | |
561 | AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d " | |
562 | "(%s w/factor %d, noise factor %f, " | |
563 | "pedestal %8.2f+/-%8.2f)", | |
564 | det, rng, sec, str, adc, | |
565 | (zsEnabled ? "zs'ed" : "straight"), | |
566 | zsNoiseFactor, noiseFactor, ped, noise)); | |
567 | ||
568 | Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped); | |
569 | counts = TMath::Max(Int_t(counts), 0); | |
570 | // Calculate the noise factor for suppressing remenants of the noise | |
571 | // peak. If we have done on-line zero suppression, we only check | |
572 | // for noise signals that are larger than the suppressed noise. If | |
573 | // the noise factor used on line is larger than the factor used | |
574 | // here, we do not do this check at all. | |
575 | // | |
576 | // For example: | |
577 | // Online factor | Read factor | Result | |
578 | // ---------------+--------------+------------------------------- | |
579 | // 2 | 3 | Check if signal > 1 * noise | |
580 | // 3 | 3 | Check if signal > 0 | |
581 | // 3 | 2 | Check if signal > 0 | |
582 | // | |
583 | // In this way, we make sure that we do not suppress away too much | |
584 | // data, and that the read-factor is the most stringent cut. | |
585 | Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0)); | |
586 | if (counts < noise * nf) counts = 0; | |
587 | if (counts > 0) AliDebugClass(15, "Got a hit strip"); | |
588 | ||
589 | return counts; | |
590 | } | |
50b9d194 | 591 | |
592 | ||
1a1fdef7 | 593 | //____________________________________________________________________ |
594 | UShort_t | |
50b9d194 | 595 | AliFMDReconstructor::SubtractPedestal(UShort_t det, |
596 | Char_t rng, | |
597 | UShort_t sec, | |
598 | UShort_t str, | |
599 | Short_t adc) const | |
1a1fdef7 | 600 | { |
601 | // Member function to subtract the pedestal from a digit | |
50b9d194 | 602 | // |
603 | // Parameters: | |
604 | // det Detector ID | |
605 | // rng Ring ID | |
606 | // sec Sector ID | |
607 | // rng Strip ID | |
608 | // adc # of ADC counts | |
609 | // Return: | |
610 | // Pedestal subtracted signal or USHRT_MAX in case of problems | |
611 | // | |
faf80567 | 612 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc, |
613 | fNoiseFactor, fZS[det-1], | |
614 | fZSFactor[det-1]); | |
9684be2f | 615 | if (fDiagStep1) fDiagStep1->Fill(adc, counts); |
8f6ee336 | 616 | |
faf80567 | 617 | return counts; |
1a1fdef7 | 618 | } |
619 | ||
8f6ee336 | 620 | //____________________________________________________________________ |
621 | Float_t | |
50b9d194 | 622 | AliFMDReconstructor::Adc2Energy(UShort_t det, |
623 | Char_t rng, | |
624 | UShort_t sec, | |
625 | UShort_t str, | |
50b9d194 | 626 | UShort_t count) const |
8f6ee336 | 627 | { |
628 | // Converts number of ADC counts to energy deposited. | |
629 | // Note, that this member function can be overloaded by derived | |
630 | // classes to do strip-specific look-ups in databases or the like, | |
631 | // to find the proper gain for a strip. | |
632 | // | |
68aba90a | 633 | // In the first simple version, we calculate the energy deposited as |
8f6ee336 | 634 | // |
635 | // EnergyDeposited = cos(theta) * gain * count | |
636 | // | |
637 | // where | |
638 | // | |
639 | // Pre_amp_MIP_Range | |
640 | // gain = ----------------- * Energy_deposited_per_MIP | |
641 | // ADC_channel_size | |
642 | // | |
643 | // is constant and the same for all strips. | |
68aba90a | 644 | // |
645 | // For the production we use the conversion measured in the NBI lab. | |
646 | // The total conversion is then: | |
50b9d194 | 647 | // |
648 | // gain = ADC / DAC | |
649 | // | |
650 | // EdepMip * count | |
651 | // => energy = ---------------- | |
652 | // gain * DACPerADC | |
653 | // | |
654 | // Parameters: | |
655 | // det Detector ID | |
656 | // rng Ring ID | |
657 | // sec Sector ID | |
658 | // rng Strip ID | |
50b9d194 | 659 | // counts Number of ADC counts over pedestal |
660 | // Return | |
661 | // The energy deposited in a single strip, or -1 in case of problems | |
68aba90a | 662 | // |
a9579262 | 663 | if (count <= 0) return 0; |
8f6ee336 | 664 | AliFMDParameters* param = AliFMDParameters::Instance(); |
50b9d194 | 665 | Float_t gain = param->GetPulseGain(det, rng, sec, str); |
68aba90a | 666 | // 'Tagging' bad gains as bad energy |
667 | if (gain < 0) { | |
50b9d194 | 668 | AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]", |
669 | gain, det, rng, sec, str)); | |
68aba90a | 670 | return -1; |
671 | } | |
50b9d194 | 672 | AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)", |
68aba90a | 673 | count, gain,param->GetDACPerMIP())); |
a9579262 | 674 | |
50b9d194 | 675 | Double_t edep = ((count * param->GetEdepMip()) |
676 | / (gain * param->GetDACPerMIP())); | |
faf80567 | 677 | return edep; |
678 | } | |
679 | ||
680 | //____________________________________________________________________ | |
681 | Float_t | |
682 | AliFMDReconstructor::Adc2Energy(UShort_t det, | |
683 | Char_t rng, | |
684 | UShort_t sec, | |
685 | UShort_t str, | |
686 | Float_t eta, | |
687 | UShort_t count) const | |
688 | { | |
689 | // Converts number of ADC counts to energy deposited. | |
690 | // Note, that this member function can be overloaded by derived | |
691 | // classes to do strip-specific look-ups in databases or the like, | |
692 | // to find the proper gain for a strip. | |
693 | // | |
694 | // In the first simple version, we calculate the energy deposited as | |
695 | // | |
696 | // EnergyDeposited = cos(theta) * gain * count | |
697 | // | |
698 | // where | |
699 | // | |
700 | // Pre_amp_MIP_Range | |
701 | // gain = ----------------- * Energy_deposited_per_MIP | |
702 | // ADC_channel_size | |
703 | // | |
704 | // is constant and the same for all strips. | |
705 | // | |
706 | // For the production we use the conversion measured in the NBI lab. | |
707 | // The total conversion is then: | |
708 | // | |
709 | // gain = ADC / DAC | |
710 | // | |
711 | // EdepMip * count | |
712 | // => energy = ---------------- | |
713 | // gain * DACPerADC | |
714 | // | |
715 | // Parameters: | |
716 | // det Detector ID | |
717 | // rng Ring ID | |
718 | // sec Sector ID | |
719 | // rng Strip ID | |
720 | // eta Psuedo-rapidity | |
721 | // counts Number of ADC counts over pedestal | |
722 | // Return | |
723 | // The energy deposited in a single strip, or -1 in case of problems | |
724 | // | |
725 | Double_t edep = Adc2Energy(det, rng, sec, str, count); | |
726 | ||
9684be2f | 727 | if (fDiagStep2) fDiagStep2->Fill(count, edep); |
a9579262 | 728 | if (fAngleCorrect) { |
9684be2f | 729 | Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); |
730 | Double_t corr = TMath::Abs(TMath::Cos(theta)); | |
731 | Double_t cedep = corr * edep; | |
f95a63c4 | 732 | AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", |
9684be2f | 733 | edep, corr, cedep, eta, theta)); |
734 | if (fDiagStep3) fDiagStep3->Fill(edep, cedep); | |
735 | edep = cedep; | |
a9579262 | 736 | } |
8f6ee336 | 737 | return edep; |
738 | } | |
739 | ||
740 | //____________________________________________________________________ | |
741 | Float_t | |
50b9d194 | 742 | AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/, |
743 | Char_t /*rng*/, | |
744 | UShort_t /*sec*/, | |
745 | UShort_t /*str*/, | |
746 | Float_t edep) const | |
8f6ee336 | 747 | { |
748 | // Converts an energy signal to number of particles. | |
749 | // Note, that this member function can be overloaded by derived | |
750 | // classes to do strip-specific look-ups in databases or the like, | |
751 | // to find the proper gain for a strip. | |
752 | // | |
753 | // In this simple version, we calculate the multiplicity as | |
754 | // | |
755 | // multiplicity = Energy_deposited / Energy_deposited_per_MIP | |
756 | // | |
757 | // where | |
758 | // | |
759 | // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness | |
760 | // | |
761 | // is constant and the same for all strips | |
50b9d194 | 762 | // |
763 | // Parameters: | |
764 | // det Detector ID | |
765 | // rng Ring ID | |
766 | // sec Sector ID | |
767 | // rng Strip ID | |
768 | // edep Energy deposited in a single strip | |
769 | // Return | |
770 | // The "bare" multiplicity corresponding to the energy deposited | |
8f6ee336 | 771 | AliFMDParameters* param = AliFMDParameters::Instance(); |
772 | Double_t edepMIP = param->GetEdepMip(); | |
773 | Float_t mult = edep / edepMIP; | |
68aba90a | 774 | #if 0 |
8f6ee336 | 775 | if (edep > 0) |
f95a63c4 | 776 | AliFMDDebug(15, ("Translating energy %f to multiplicity via " |
8f6ee336 | 777 | "divider %f->%f", edep, edepMIP, mult)); |
68aba90a | 778 | #endif |
9684be2f | 779 | if (fDiagStep4) fDiagStep4->Fill(edep, mult); |
8f6ee336 | 780 | return mult; |
781 | } | |
782 | ||
783 | //____________________________________________________________________ | |
784 | void | |
50b9d194 | 785 | AliFMDReconstructor::PhysicalCoordinates(UShort_t det, |
786 | Char_t rng, | |
787 | UShort_t sec, | |
788 | UShort_t str, | |
8f6ee336 | 789 | Float_t& eta, |
790 | Float_t& phi) const | |
791 | { | |
792 | // Get the eta and phi of a digit | |
793 | // | |
50b9d194 | 794 | // Parameters: |
795 | // det Detector ID | |
796 | // rng Ring ID | |
797 | // sec Sector ID | |
798 | // rng Strip ID | |
799 | // eta On return, contains the psuedo-rapidity of the strip | |
800 | // phi On return, contains the azimuthal angle of the strip | |
801 | // | |
9b48326f | 802 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
bf000c32 | 803 | Double_t x, y, z, r, theta; |
50b9d194 | 804 | geom->Detector2XYZ(det, rng, sec, str, x, y, z); |
bf000c32 | 805 | // Correct for vertex offset. |
8161c5f7 | 806 | z -= fCurrentVertex; |
bf000c32 | 807 | phi = TMath::ATan2(y, x); |
808 | r = TMath::Sqrt(y * y + x * x); | |
809 | theta = TMath::ATan2(r, z); | |
810 | eta = -TMath::Log(TMath::Tan(theta / 2)); | |
8f6ee336 | 811 | } |
812 | ||
813 | ||
814 | ||
4347b38f | 815 | //____________________________________________________________________ |
816 | void | |
1a1fdef7 | 817 | AliFMDReconstructor::FillESD(TTree* /* digitsTree */, |
818 | TTree* /* clusterTree */, | |
af885e0f | 819 | AliESDEvent* esd) const |
121a60bd | 820 | { |
42403906 | 821 | // nothing to be done |
69b696b9 | 822 | // FIXME: The vertex may not be known when Reconstruct is executed, |
823 | // so we may have to move some of that member function here. | |
f95a63c4 | 824 | AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); |
8f6ee336 | 825 | // fESDObj->Print(); |
826 | ||
50b9d194 | 827 | Double_t oldVz = fCurrentVertex; |
8983e5ae | 828 | GetVertex(esd); |
50b9d194 | 829 | if (fVertexType != kNoVertex) { |
830 | AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)", | |
831 | fCurrentVertex, oldVz)); | |
832 | AliFMDESDRevertexer revertexer; | |
833 | revertexer.Revertex(fESDObj, fCurrentVertex); | |
834 | } | |
835 | ||
8f6ee336 | 836 | if (esd) { |
f95a63c4 | 837 | AliFMDDebug(2, ("Writing FMD data to ESD tree")); |
8f6ee336 | 838 | esd->SetFMDData(fESDObj); |
a3537838 | 839 | } |
9684be2f | 840 | |
841 | if (!fDiagnostics || !esd) return; | |
842 | static bool first = true; | |
69893a66 | 843 | // This is most likely NOT the event number you'd like to use. It |
844 | // has nothing to do with the 'real' event number. | |
845 | // - That's OK. We just use it for the name of the directory - | |
846 | // nothing else. Christian | |
847 | Int_t evno = esd->GetEventNumberInFile(); | |
848 | AliFMDDebug(1, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); | |
9684be2f | 849 | TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); |
850 | first = false; | |
851 | f.cd(); | |
852 | TDirectory* d = f.mkdir(Form("%03d", evno), | |
853 | Form("Diagnostics histograms for event # %d", evno)); | |
854 | d->cd(); | |
855 | if (fDiagStep1) fDiagStep1->Write(); | |
856 | if (fDiagStep2) fDiagStep2->Write(); | |
857 | if (fDiagStep3) fDiagStep3->Write(); | |
858 | if (fDiagStep4) fDiagStep4->Write(); | |
859 | if (fDiagAll) fDiagAll->Write(); | |
860 | d->Write(); | |
861 | f.Write(); | |
862 | f.Close(); | |
863 | ||
864 | if (fDiagStep1) fDiagStep1->Reset(); | |
865 | if (fDiagStep2) fDiagStep2->Reset(); | |
866 | if (fDiagStep3) fDiagStep3->Reset(); | |
867 | if (fDiagStep4) fDiagStep4->Reset(); | |
868 | if (fDiagAll) fDiagAll->Reset(); | |
121a60bd | 869 | } |
870 | ||
ddaa8027 | 871 | //____________________________________________________________________ |
872 | void | |
873 | AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, | |
874 | AliESDEvent* esd) const | |
875 | { | |
876 | TTree* dummy = 0; | |
877 | FillESD(dummy, clusterTree, esd); | |
878 | } | |
879 | ||
42403906 | 880 | //____________________________________________________________________ |
881 | // | |
882 | // EOF | |
883 | // |