]>
Commit | Line | Data |
---|---|---|
37c55dc0 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
0d0e6995 | 15 | /* $Id$ */ |
c2fc1258 | 16 | /** @file AliFMDReconstructor.cxx |
17 | @author Christian Holm Christensen <cholm@nbi.dk> | |
18 | @date Mon Mar 27 12:47:09 2006 | |
19 | @brief FMD reconstruction | |
20 | */ | |
4347b38f | 21 | //____________________________________________________________________ |
42403906 | 22 | // |
02a27b50 | 23 | // This is a class that constructs AliFMDRecPoint objects from of Digits |
6169f936 | 24 | // This class reads either digits from a TClonesArray or raw data from |
4347b38f | 25 | // a DDL file (or similar), and stores the read ADC counts in an |
6169f936 | 26 | // internal cache (fAdcs). The rec-points are made via the naiive |
27 | // method. | |
4347b38f | 28 | // |
37c55dc0 | 29 | //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia |
4347b38f | 30 | // Latest changes by Christian Holm Christensen <cholm@nbi.dk> |
31 | // | |
32 | // | |
33 | //____________________________________________________________________ | |
37c55dc0 | 34 | |
f95a63c4 | 35 | // #include <AliLog.h> // ALILOG_H |
6169f936 | 36 | // #include <AliRun.h> // ALIRUN_H |
f95a63c4 | 37 | #include "AliFMDDebug.h" |
1a1fdef7 | 38 | #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H |
39 | #include "AliFMDParameters.h" // ALIFMDPARAMETERS_H | |
5cf05dbb | 40 | #include "AliFMDAltroMapping.h" // ALIFMDALTROMAPPING_H |
56b1929b | 41 | #include "AliFMDDigit.h" // ALIFMDDIGIT_H |
faf80567 | 42 | #include "AliFMDSDigit.h" // ALIFMDDIGIT_H |
56b1929b | 43 | #include "AliFMDReconstructor.h" // ALIFMDRECONSTRUCTOR_H |
56b1929b | 44 | #include "AliFMDRawReader.h" // ALIFMDRAWREADER_H |
bf000c32 | 45 | #include "AliFMDRecPoint.h" // ALIFMDMULTNAIIVE_H |
af885e0f | 46 | #include "AliESDEvent.h" // ALIESDEVENT_H |
aad72f45 | 47 | #include "AliESDVertex.h" // ALIESDVERTEX_H |
50b9d194 | 48 | #include "AliESDTZERO.h" // ALIESDVERTEX_H |
8f6ee336 | 49 | #include <AliESDFMD.h> // ALIESDFMD_H |
aad72f45 | 50 | #include <TMath.h> |
9684be2f | 51 | #include <TH1.h> |
52 | #include <TH2.h> | |
53 | #include <TFile.h> | |
68aba90a | 54 | #include <climits> |
50b9d194 | 55 | // Import revertexer into a private namespace (to prevent conflicts) |
56 | namespace { | |
57 | # include "AliFMDESDRevertexer.h" | |
58 | } | |
59 | ||
68aba90a | 60 | |
02a27b50 | 61 | class AliRawReader; |
4347b38f | 62 | |
63 | //____________________________________________________________________ | |
925e6570 | 64 | ClassImp(AliFMDReconstructor) |
1a1fdef7 | 65 | #if 0 |
66 | ; // This is here to keep Emacs for indenting the next line | |
67 | #endif | |
37c55dc0 | 68 | |
4347b38f | 69 | //____________________________________________________________________ |
70 | AliFMDReconstructor::AliFMDReconstructor() | |
71 | : AliReconstructor(), | |
e9fd1e20 | 72 | fMult(0x0), |
73 | fNMult(0), | |
74 | fTreeR(0x0), | |
75 | fCurrentVertex(0), | |
76 | fESDObj(0x0), | |
9684be2f | 77 | fNoiseFactor(0), |
78 | fAngleCorrect(kTRUE), | |
79 | fVertexType(kNoVertex), | |
9684be2f | 80 | fESD(0x0), |
68aba90a | 81 | fDiagnostics(kTRUE), |
9684be2f | 82 | fDiagStep1(0), |
83 | fDiagStep2(0), | |
84 | fDiagStep3(0), | |
85 | fDiagStep4(0), | |
86 | fDiagAll(0) | |
4347b38f | 87 | { |
8f6ee336 | 88 | // Make a new FMD reconstructor object - default CTOR. |
a9579262 | 89 | SetNoiseFactor(); |
90 | SetAngleCorrect(); | |
9b98d361 | 91 | if (AliDebugLevel() > 0) fDiagnostics = kTRUE; |
4347b38f | 92 | } |
93 | ||
42403906 | 94 | |
95 | //____________________________________________________________________ | |
96 | AliFMDReconstructor::AliFMDReconstructor(const AliFMDReconstructor& other) | |
8f6ee336 | 97 | : AliReconstructor(), |
98 | fMult(other.fMult), | |
e9fd1e20 | 99 | fNMult(other.fNMult), |
100 | fTreeR(other.fTreeR), | |
101 | fCurrentVertex(other.fCurrentVertex), | |
102 | fESDObj(other.fESDObj), | |
a9579262 | 103 | fNoiseFactor(other.fNoiseFactor), |
9684be2f | 104 | fAngleCorrect(other.fAngleCorrect), |
105 | fVertexType(other.fVertexType), | |
9684be2f | 106 | fESD(other.fESD), |
107 | fDiagnostics(other.fDiagnostics), | |
108 | fDiagStep1(other.fDiagStep1), | |
109 | fDiagStep2(other.fDiagStep2), | |
110 | fDiagStep3(other.fDiagStep3), | |
111 | fDiagStep4(other.fDiagStep4), | |
112 | fDiagAll(other.fDiagAll) | |
42403906 | 113 | { |
56b1929b | 114 | // Copy constructor |
42403906 | 115 | } |
116 | ||
117 | ||
118 | //____________________________________________________________________ | |
119 | AliFMDReconstructor& | |
120 | AliFMDReconstructor::operator=(const AliFMDReconstructor& other) | |
121 | { | |
56b1929b | 122 | // Assignment operator |
a9579262 | 123 | fMult = other.fMult; |
124 | fNMult = other.fNMult; | |
125 | fTreeR = other.fTreeR; | |
e9fd1e20 | 126 | fCurrentVertex = other.fCurrentVertex; |
a9579262 | 127 | fESDObj = other.fESDObj; |
a9579262 | 128 | fNoiseFactor = other.fNoiseFactor; |
129 | fAngleCorrect = other.fAngleCorrect; | |
9684be2f | 130 | fVertexType = other.fVertexType; |
9684be2f | 131 | fESD = other.fESD; |
132 | fDiagnostics = other.fDiagnostics; | |
133 | fDiagStep1 = other.fDiagStep1; | |
134 | fDiagStep2 = other.fDiagStep2; | |
135 | fDiagStep3 = other.fDiagStep3; | |
136 | fDiagStep4 = other.fDiagStep4; | |
137 | fDiagAll = other.fDiagAll; | |
42403906 | 138 | return *this; |
139 | } | |
56b1929b | 140 | |
141 | //____________________________________________________________________ | |
142 | AliFMDReconstructor::~AliFMDReconstructor() | |
143 | { | |
144 | // Destructor | |
8f6ee336 | 145 | if (fMult) fMult->Delete(); |
146 | if (fMult) delete fMult; | |
147 | if (fESDObj) delete fESDObj; | |
56b1929b | 148 | } |
4347b38f | 149 | |
150 | //____________________________________________________________________ | |
151 | void | |
d76c31f4 | 152 | AliFMDReconstructor::Init() |
1a1fdef7 | 153 | { |
154 | // Initialize the reconstructor | |
f011bd38 | 155 | |
bf000c32 | 156 | // Initialize the geometry |
9b48326f | 157 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
158 | geom->Init(); | |
159 | geom->InitTransformations(); | |
160 | ||
161 | // Initialize the parameters | |
162 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
163 | param->Init(); | |
bf000c32 | 164 | |
8f6ee336 | 165 | // Current vertex position |
1a1fdef7 | 166 | fCurrentVertex = 0; |
8f6ee336 | 167 | // Create array of reconstructed strip multiplicities |
bf000c32 | 168 | fMult = new TClonesArray("AliFMDRecPoint", 51200); |
8f6ee336 | 169 | // Create ESD output object |
170 | fESDObj = new AliESDFMD; | |
171 | ||
9684be2f | 172 | // Check if we need diagnostics histograms |
173 | if (!fDiagnostics) return; | |
9b98d361 | 174 | AliInfo("Making diagnostics histograms"); |
9684be2f | 175 | fDiagStep1 = new TH2I("diagStep1", "Read ADC vs. Noise surpressed ADC", |
176 | 1024, -.5, 1023.5, 1024, -.5, 1023.5); | |
177 | fDiagStep1->SetDirectory(0); | |
178 | fDiagStep1->GetXaxis()->SetTitle("ADC (read)"); | |
179 | fDiagStep1->GetYaxis()->SetTitle(Form("ADC (noise surpressed %4.f)", | |
180 | fNoiseFactor)); | |
181 | fDiagStep2 = new TH2F("diagStep2", "ADC vs Edep deduced", | |
182 | 1024, -.5, 1023.5, 100, 0, 2); | |
183 | fDiagStep2->SetDirectory(0); | |
184 | fDiagStep2->GetXaxis()->SetTitle("ADC (noise surpressed)"); | |
185 | fDiagStep2->GetYaxis()->SetTitle("#Delta E [GeV]"); | |
186 | fDiagStep3 = new TH2F("diagStep3", "Edep vs Edep path corrected", | |
187 | 100, 0., 2., 100, 0., 2.); | |
188 | fDiagStep3->SetDirectory(0); | |
189 | fDiagStep3->GetXaxis()->SetTitle("#Delta E [GeV]"); | |
190 | fDiagStep3->GetYaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
191 | fDiagStep4 = new TH2F("diagStep4", "Edep vs Multiplicity deduced", | |
192 | 100, 0., 2., 100, -.1, 19.9); | |
193 | fDiagStep4->SetDirectory(0); | |
194 | fDiagStep4->GetXaxis()->SetTitle("#Delta E/#Delta x #times #delta x [GeV]"); | |
195 | fDiagStep4->GetYaxis()->SetTitle("Multiplicity"); | |
196 | fDiagAll = new TH2F("diagAll", "Read ADC vs Multiplicity deduced", | |
197 | 1024, -.5, 1023.5, 100, -.1, 19.9); | |
198 | fDiagAll->SetDirectory(0); | |
199 | fDiagAll->GetXaxis()->SetTitle("ADC (read)"); | |
200 | fDiagAll->GetYaxis()->SetTitle("Multiplicity"); | |
4347b38f | 201 | } |
dc8af42e | 202 | |
4347b38f | 203 | //____________________________________________________________________ |
204 | void | |
1a1fdef7 | 205 | AliFMDReconstructor::ConvertDigits(AliRawReader* reader, |
206 | TTree* digitsTree) const | |
207 | { | |
208 | // Convert Raw digits to AliFMDDigit's in a tree | |
faf80567 | 209 | AliFMDDebug(1, ("Reading raw data into digits tree")); |
1a1fdef7 | 210 | AliFMDRawReader rawRead(reader, digitsTree); |
211 | // rawRead.SetSampleRate(fFMD->GetSampleRate()); | |
212 | rawRead.Exec(); | |
5cf05dbb | 213 | AliFMDAltroMapping* map = AliFMDParameters::Instance()->GetAltroMap(); |
214 | for (size_t i = 1; i <= 3; i++) { | |
215 | fZS[i] = rawRead.IsZeroSuppressed(map->Detector2DDL(i)); | |
216 | fZSFactor[i] = rawRead.NoiseFactor(map->Detector2DDL(i)); | |
217 | } | |
4347b38f | 218 | } |
219 | ||
4347b38f | 220 | //____________________________________________________________________ |
221 | void | |
8983e5ae | 222 | AliFMDReconstructor::GetVertex(AliESDEvent* esd) const |
4347b38f | 223 | { |
97e94238 | 224 | // Return the vertex to use. |
225 | // This is obtained from the ESD object. | |
226 | // If not found, a warning is issued. | |
9684be2f | 227 | fVertexType = kNoVertex; |
228 | fCurrentVertex = 0; | |
8983e5ae | 229 | if (!esd) return; |
230 | ||
231 | const AliESDVertex* vertex = esd->GetPrimaryVertex(); | |
232 | if (!vertex) vertex = esd->GetPrimaryVertexSPD(); | |
233 | if (!vertex) vertex = esd->GetPrimaryVertexTPC(); | |
234 | if (!vertex) vertex = esd->GetVertex(); | |
235 | ||
236 | if (vertex) { | |
237 | AliFMDDebug(2, ("Got %s (%s) from ESD: %f", | |
238 | vertex->GetName(), vertex->GetTitle(), vertex->GetZv())); | |
239 | fCurrentVertex = vertex->GetZv(); | |
240 | fVertexType = kESDVertex; | |
241 | return; | |
242 | } | |
243 | else if (esd->GetESDTZERO()) { | |
244 | AliFMDDebug(2, ("Got primary vertex from T0: %f", esd->GetT0zVertex())); | |
245 | fCurrentVertex = esd->GetT0zVertex(); | |
246 | fVertexType = kESDVertex; | |
247 | return; | |
a3537838 | 248 | } |
9684be2f | 249 | AliWarning("Didn't get any vertex from ESD or generator"); |
250 | } | |
251 | ||
252 | ||
ddaa8027 | 253 | //____________________________________________________________________ |
254 | void | |
50b9d194 | 255 | AliFMDReconstructor::Reconstruct(AliRawReader* reader, TTree*) const |
ddaa8027 | 256 | { |
257 | // Reconstruct directly from raw data (no intermediate output on | |
258 | // digit tree or rec point tree). | |
50b9d194 | 259 | // |
ddaa8027 | 260 | // Parameters: |
261 | // reader Raw event reader | |
262 | // ctree Not used. | |
50b9d194 | 263 | AliFMDRawReader rawReader(reader, 0); |
264 | ||
265 | UShort_t det, sec, str, fac; | |
266 | Short_t adc, oldDet = -1; | |
267 | Bool_t zs; | |
268 | Char_t rng; | |
269 | ||
270 | while (rawReader.NextSignal(det, rng, sec, str, adc, zs, fac)) { | |
271 | if (det != oldDet) { | |
272 | fZS[det-1] = zs; | |
273 | fZSFactor[det-1] = fac; | |
274 | oldDet = det; | |
275 | } | |
276 | ProcessSignal(det, rng, sec, str, adc); | |
277 | } | |
ddaa8027 | 278 | } |
279 | ||
faf80567 | 280 | //____________________________________________________________________ |
281 | void | |
282 | AliFMDReconstructor::Digitize(AliRawReader* reader, TClonesArray* sdigits) const | |
283 | { | |
284 | // Reconstruct directly from raw data (no intermediate output on | |
285 | // digit tree or rec point tree). | |
286 | // | |
287 | // Parameters: | |
288 | // reader Raw event reader | |
289 | // ctree Not used. | |
290 | AliFMDRawReader rawReader(reader, 0); | |
291 | ||
292 | UShort_t det, sec, str, sam, rat, fac; | |
293 | Short_t adc, oldDet = -1; | |
294 | Bool_t zs; | |
295 | Char_t rng; | |
296 | ||
297 | while (rawReader.NextSample(det, rng, sec, str, sam, rat, adc, zs, fac)) { | |
298 | if (!rawReader.SelectSample(sam, rat)) continue; | |
299 | if (det != oldDet) { | |
300 | fZS[det-1] = zs; | |
301 | fZSFactor[det-1] = fac; | |
302 | oldDet = det; | |
303 | } | |
304 | DigitizeSignal(sdigits, det, rng, sec, str, sam, adc); | |
305 | } | |
306 | } | |
307 | ||
9684be2f | 308 | //____________________________________________________________________ |
309 | void | |
310 | AliFMDReconstructor::Reconstruct(TTree* digitsTree, | |
311 | TTree* clusterTree) const | |
312 | { | |
313 | // Reconstruct event from digits in tree | |
314 | // Get the FMD branch holding the digits. | |
315 | // FIXME: The vertex may not be known yet, so we may have to move | |
316 | // some of this to FillESD. | |
50b9d194 | 317 | // |
318 | // Parameters: | |
319 | // digitsTree Pointer to a tree containing digits | |
320 | // clusterTree Pointer to output tree | |
321 | // | |
f95a63c4 | 322 | AliFMDDebug(2, ("Reconstructing from digits in a tree")); |
8983e5ae | 323 | GetVertex(fESD); |
9684be2f | 324 | |
1a1fdef7 | 325 | TBranch *digitBranch = digitsTree->GetBranch("FMD"); |
4347b38f | 326 | if (!digitBranch) { |
1a1fdef7 | 327 | Error("Exec", "No digit branch for the FMD found"); |
328 | return; | |
4347b38f | 329 | } |
0abe7182 | 330 | TClonesArray* digits = new TClonesArray("AliFMDDigit"); |
1a1fdef7 | 331 | digitBranch->SetAddress(&digits); |
4347b38f | 332 | |
8f6ee336 | 333 | if (fMult) fMult->Clear(); |
334 | if (fESDObj) fESDObj->Clear(); | |
335 | ||
336 | fNMult = 0; | |
337 | fTreeR = clusterTree; | |
338 | fTreeR->Branch("FMD", &fMult); | |
339 | ||
f95a63c4 | 340 | AliFMDDebug(5, ("Getting entry 0 from digit branch")); |
1a1fdef7 | 341 | digitBranch->GetEntry(0); |
342 | ||
faf80567 | 343 | AliFMDDebug(1, ("Processing digits")); |
e802be3e | 344 | ProcessDigits(digits); |
345 | ||
8f6ee336 | 346 | Int_t written = clusterTree->Fill(); |
f95a63c4 | 347 | AliFMDDebug(10, ("Filled %d bytes into cluster tree", written)); |
0abe7182 | 348 | digits->Delete(); |
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(); |
f95a63c4 | 365 | AliFMDDebug(1, ("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(); | |
384 | ||
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)) { | |
408 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
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 | |
429 | if (mult < 0) return; | |
430 | AliFMDDebug(5, ("FMD%d%c[%2d,%3d]: " | |
431 | "ADC: %d, Counts: %d, Energy: %f, Mult: %f", | |
432 | det, rng, sec, str, adc, counts, edep, mult)); | |
433 | ||
434 | // Create a `RecPoint' on the output branch. | |
435 | if (fMult) { | |
436 | AliFMDRecPoint* m = | |
437 | new ((*fMult)[fNMult]) AliFMDRecPoint(det, rng, sec, str, | |
438 | eta, phi, edep, mult); | |
439 | (void)m; // Suppress warnings about unused variables. | |
440 | fNMult++; | |
4347b38f | 441 | } |
50b9d194 | 442 | |
443 | fESDObj->SetMultiplicity(det, rng, sec, str, mult); | |
444 | fESDObj->SetEta(det, rng, sec, str, eta); | |
445 | ||
446 | if (fDiagAll) fDiagAll->Fill(adc, mult); | |
447 | ||
4347b38f | 448 | } |
8f6ee336 | 449 | |
faf80567 | 450 | //____________________________________________________________________ |
451 | void | |
452 | AliFMDReconstructor::DigitizeSignal(TClonesArray* sdigits, | |
453 | UShort_t det, | |
454 | Char_t rng, | |
455 | UShort_t sec, | |
456 | UShort_t str, | |
457 | UShort_t /* sam */, | |
458 | Short_t adc) const | |
459 | { | |
460 | // Process the signal from a single strip | |
461 | // | |
462 | // Parameters: | |
463 | // det Detector ID | |
464 | // rng Ring ID | |
465 | // sec Sector ID | |
466 | // rng Strip ID | |
467 | // adc ADC counts | |
468 | // | |
469 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
470 | // Check that the strip is not marked as dead | |
471 | if (param->IsDead(det, rng, sec, str)) { | |
472 | AliFMDDebug(10, ("FMD%d%c[%2d,%3d] is dead", det, rng, sec, str)); | |
473 | return; | |
474 | } | |
475 | ||
476 | // Substract pedestal. | |
477 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc); | |
478 | if(counts == USHRT_MAX || counts == 0) return; | |
479 | ||
480 | // Gain match digits. | |
481 | Double_t edep = Adc2Energy(det, rng, sec, str, counts); | |
482 | // Get rid of nonsense energy | |
483 | if(edep < 0) return; | |
484 | ||
485 | Int_t n = sdigits->GetEntriesFast(); | |
486 | // AliFMDSDigit* sdigit = | |
487 | new ((*sdigits)[n]) | |
488 | AliFMDSDigit(det, rng, sec, str, edep, counts, counts, counts, counts); | |
489 | // sdigit->SetCount(sam, counts); | |
490 | } | |
491 | ||
492 | //____________________________________________________________________ | |
493 | UShort_t | |
494 | AliFMDReconstructor::SubtractPedestal(UShort_t det, | |
495 | Char_t rng, | |
496 | UShort_t sec, | |
497 | UShort_t str, | |
498 | UShort_t adc, | |
499 | Float_t noiseFactor, | |
500 | Bool_t zsEnabled, | |
501 | UShort_t zsNoiseFactor) const | |
502 | { | |
503 | AliFMDParameters* param = AliFMDParameters::Instance(); | |
504 | Float_t ped = (zsEnabled ? 0 : | |
505 | param->GetPedestal(det, rng, sec, str)); | |
506 | Float_t noise = param->GetPedestalWidth(det, rng, sec, str); | |
507 | if(ped < 0 || noise < 0) { | |
508 | AliWarningClass(Form("Invalid pedestal (%f) or noise (%f) " | |
509 | "for FMD%d%c[%02d,%03d]", | |
510 | ped, noise, det, rng, sec, str)); | |
511 | return USHRT_MAX; | |
512 | } | |
513 | AliDebugClass(15, Form("Subtracting pedestal for FMD%d%c[%2d,%3d]=%4d " | |
514 | "(%s w/factor %d, noise factor %f, " | |
515 | "pedestal %8.2f+/-%8.2f)", | |
516 | det, rng, sec, str, adc, | |
517 | (zsEnabled ? "zs'ed" : "straight"), | |
518 | zsNoiseFactor, noiseFactor, ped, noise)); | |
519 | ||
520 | Int_t counts = adc + Int_t(zsEnabled ? zsNoiseFactor * noise : - ped); | |
521 | counts = TMath::Max(Int_t(counts), 0); | |
522 | // Calculate the noise factor for suppressing remenants of the noise | |
523 | // peak. If we have done on-line zero suppression, we only check | |
524 | // for noise signals that are larger than the suppressed noise. If | |
525 | // the noise factor used on line is larger than the factor used | |
526 | // here, we do not do this check at all. | |
527 | // | |
528 | // For example: | |
529 | // Online factor | Read factor | Result | |
530 | // ---------------+--------------+------------------------------- | |
531 | // 2 | 3 | Check if signal > 1 * noise | |
532 | // 3 | 3 | Check if signal > 0 | |
533 | // 3 | 2 | Check if signal > 0 | |
534 | // | |
535 | // In this way, we make sure that we do not suppress away too much | |
536 | // data, and that the read-factor is the most stringent cut. | |
537 | Float_t nf = TMath::Max(0.F, noiseFactor - (zsEnabled ? zsNoiseFactor : 0)); | |
538 | if (counts < noise * nf) counts = 0; | |
539 | if (counts > 0) AliDebugClass(15, "Got a hit strip"); | |
540 | ||
541 | return counts; | |
542 | } | |
50b9d194 | 543 | |
544 | ||
1a1fdef7 | 545 | //____________________________________________________________________ |
546 | UShort_t | |
50b9d194 | 547 | AliFMDReconstructor::SubtractPedestal(UShort_t det, |
548 | Char_t rng, | |
549 | UShort_t sec, | |
550 | UShort_t str, | |
551 | Short_t adc) const | |
1a1fdef7 | 552 | { |
553 | // Member function to subtract the pedestal from a digit | |
50b9d194 | 554 | // |
555 | // Parameters: | |
556 | // det Detector ID | |
557 | // rng Ring ID | |
558 | // sec Sector ID | |
559 | // rng Strip ID | |
560 | // adc # of ADC counts | |
561 | // Return: | |
562 | // Pedestal subtracted signal or USHRT_MAX in case of problems | |
563 | // | |
faf80567 | 564 | UShort_t counts = SubtractPedestal(det, rng, sec, str, adc, |
565 | fNoiseFactor, fZS[det-1], | |
566 | fZSFactor[det-1]); | |
9684be2f | 567 | if (fDiagStep1) fDiagStep1->Fill(adc, counts); |
8f6ee336 | 568 | |
faf80567 | 569 | return counts; |
1a1fdef7 | 570 | } |
571 | ||
8f6ee336 | 572 | //____________________________________________________________________ |
573 | Float_t | |
50b9d194 | 574 | AliFMDReconstructor::Adc2Energy(UShort_t det, |
575 | Char_t rng, | |
576 | UShort_t sec, | |
577 | UShort_t str, | |
50b9d194 | 578 | UShort_t count) const |
8f6ee336 | 579 | { |
580 | // Converts number of ADC counts to energy deposited. | |
581 | // Note, that this member function can be overloaded by derived | |
582 | // classes to do strip-specific look-ups in databases or the like, | |
583 | // to find the proper gain for a strip. | |
584 | // | |
68aba90a | 585 | // In the first simple version, we calculate the energy deposited as |
8f6ee336 | 586 | // |
587 | // EnergyDeposited = cos(theta) * gain * count | |
588 | // | |
589 | // where | |
590 | // | |
591 | // Pre_amp_MIP_Range | |
592 | // gain = ----------------- * Energy_deposited_per_MIP | |
593 | // ADC_channel_size | |
594 | // | |
595 | // is constant and the same for all strips. | |
68aba90a | 596 | // |
597 | // For the production we use the conversion measured in the NBI lab. | |
598 | // The total conversion is then: | |
50b9d194 | 599 | // |
600 | // gain = ADC / DAC | |
601 | // | |
602 | // EdepMip * count | |
603 | // => energy = ---------------- | |
604 | // gain * DACPerADC | |
605 | // | |
606 | // Parameters: | |
607 | // det Detector ID | |
608 | // rng Ring ID | |
609 | // sec Sector ID | |
610 | // rng Strip ID | |
50b9d194 | 611 | // counts Number of ADC counts over pedestal |
612 | // Return | |
613 | // The energy deposited in a single strip, or -1 in case of problems | |
68aba90a | 614 | // |
a9579262 | 615 | if (count <= 0) return 0; |
8f6ee336 | 616 | AliFMDParameters* param = AliFMDParameters::Instance(); |
50b9d194 | 617 | Float_t gain = param->GetPulseGain(det, rng, sec, str); |
68aba90a | 618 | // 'Tagging' bad gains as bad energy |
619 | if (gain < 0) { | |
50b9d194 | 620 | AliWarning(Form("Invalid gain (%f) for FMD%d%c[%02d,%03d]", |
621 | gain, det, rng, sec, str)); | |
68aba90a | 622 | return -1; |
623 | } | |
50b9d194 | 624 | AliFMDDebug(5, ("Converting counts %d to energy (factor=%f, DAC2MIP=%f)", |
68aba90a | 625 | count, gain,param->GetDACPerMIP())); |
a9579262 | 626 | |
50b9d194 | 627 | Double_t edep = ((count * param->GetEdepMip()) |
628 | / (gain * param->GetDACPerMIP())); | |
faf80567 | 629 | return edep; |
630 | } | |
631 | ||
632 | //____________________________________________________________________ | |
633 | Float_t | |
634 | AliFMDReconstructor::Adc2Energy(UShort_t det, | |
635 | Char_t rng, | |
636 | UShort_t sec, | |
637 | UShort_t str, | |
638 | Float_t eta, | |
639 | UShort_t count) const | |
640 | { | |
641 | // Converts number of ADC counts to energy deposited. | |
642 | // Note, that this member function can be overloaded by derived | |
643 | // classes to do strip-specific look-ups in databases or the like, | |
644 | // to find the proper gain for a strip. | |
645 | // | |
646 | // In the first simple version, we calculate the energy deposited as | |
647 | // | |
648 | // EnergyDeposited = cos(theta) * gain * count | |
649 | // | |
650 | // where | |
651 | // | |
652 | // Pre_amp_MIP_Range | |
653 | // gain = ----------------- * Energy_deposited_per_MIP | |
654 | // ADC_channel_size | |
655 | // | |
656 | // is constant and the same for all strips. | |
657 | // | |
658 | // For the production we use the conversion measured in the NBI lab. | |
659 | // The total conversion is then: | |
660 | // | |
661 | // gain = ADC / DAC | |
662 | // | |
663 | // EdepMip * count | |
664 | // => energy = ---------------- | |
665 | // gain * DACPerADC | |
666 | // | |
667 | // Parameters: | |
668 | // det Detector ID | |
669 | // rng Ring ID | |
670 | // sec Sector ID | |
671 | // rng Strip ID | |
672 | // eta Psuedo-rapidity | |
673 | // counts Number of ADC counts over pedestal | |
674 | // Return | |
675 | // The energy deposited in a single strip, or -1 in case of problems | |
676 | // | |
677 | Double_t edep = Adc2Energy(det, rng, sec, str, count); | |
678 | ||
9684be2f | 679 | if (fDiagStep2) fDiagStep2->Fill(count, edep); |
a9579262 | 680 | if (fAngleCorrect) { |
9684be2f | 681 | Double_t theta = 2 * TMath::ATan(TMath::Exp(-eta)); |
682 | Double_t corr = TMath::Abs(TMath::Cos(theta)); | |
683 | Double_t cedep = corr * edep; | |
f95a63c4 | 684 | AliFMDDebug(10, ("correcting for path %f * %f = %f (eta=%f, theta=%f)", |
9684be2f | 685 | edep, corr, cedep, eta, theta)); |
686 | if (fDiagStep3) fDiagStep3->Fill(edep, cedep); | |
687 | edep = cedep; | |
a9579262 | 688 | } |
8f6ee336 | 689 | return edep; |
690 | } | |
691 | ||
692 | //____________________________________________________________________ | |
693 | Float_t | |
50b9d194 | 694 | AliFMDReconstructor::Energy2Multiplicity(UShort_t /*det*/, |
695 | Char_t /*rng*/, | |
696 | UShort_t /*sec*/, | |
697 | UShort_t /*str*/, | |
698 | Float_t edep) const | |
8f6ee336 | 699 | { |
700 | // Converts an energy signal to number of particles. | |
701 | // Note, that this member function can be overloaded by derived | |
702 | // classes to do strip-specific look-ups in databases or the like, | |
703 | // to find the proper gain for a strip. | |
704 | // | |
705 | // In this simple version, we calculate the multiplicity as | |
706 | // | |
707 | // multiplicity = Energy_deposited / Energy_deposited_per_MIP | |
708 | // | |
709 | // where | |
710 | // | |
711 | // Energy_deposited_per_MIP = 1.664 * SI_density * SI_thickness | |
712 | // | |
713 | // is constant and the same for all strips | |
50b9d194 | 714 | // |
715 | // Parameters: | |
716 | // det Detector ID | |
717 | // rng Ring ID | |
718 | // sec Sector ID | |
719 | // rng Strip ID | |
720 | // edep Energy deposited in a single strip | |
721 | // Return | |
722 | // The "bare" multiplicity corresponding to the energy deposited | |
8f6ee336 | 723 | AliFMDParameters* param = AliFMDParameters::Instance(); |
724 | Double_t edepMIP = param->GetEdepMip(); | |
725 | Float_t mult = edep / edepMIP; | |
68aba90a | 726 | #if 0 |
8f6ee336 | 727 | if (edep > 0) |
f95a63c4 | 728 | AliFMDDebug(15, ("Translating energy %f to multiplicity via " |
8f6ee336 | 729 | "divider %f->%f", edep, edepMIP, mult)); |
68aba90a | 730 | #endif |
9684be2f | 731 | if (fDiagStep4) fDiagStep4->Fill(edep, mult); |
8f6ee336 | 732 | return mult; |
733 | } | |
734 | ||
735 | //____________________________________________________________________ | |
736 | void | |
50b9d194 | 737 | AliFMDReconstructor::PhysicalCoordinates(UShort_t det, |
738 | Char_t rng, | |
739 | UShort_t sec, | |
740 | UShort_t str, | |
8f6ee336 | 741 | Float_t& eta, |
742 | Float_t& phi) const | |
743 | { | |
744 | // Get the eta and phi of a digit | |
745 | // | |
50b9d194 | 746 | // Parameters: |
747 | // det Detector ID | |
748 | // rng Ring ID | |
749 | // sec Sector ID | |
750 | // rng Strip ID | |
751 | // eta On return, contains the psuedo-rapidity of the strip | |
752 | // phi On return, contains the azimuthal angle of the strip | |
753 | // | |
9b48326f | 754 | AliFMDGeometry* geom = AliFMDGeometry::Instance(); |
bf000c32 | 755 | Double_t x, y, z, r, theta; |
50b9d194 | 756 | geom->Detector2XYZ(det, rng, sec, str, x, y, z); |
bf000c32 | 757 | // Correct for vertex offset. |
758 | z += fCurrentVertex; | |
759 | phi = TMath::ATan2(y, x); | |
760 | r = TMath::Sqrt(y * y + x * x); | |
761 | theta = TMath::ATan2(r, z); | |
762 | eta = -TMath::Log(TMath::Tan(theta / 2)); | |
8f6ee336 | 763 | } |
764 | ||
765 | ||
766 | ||
4347b38f | 767 | //____________________________________________________________________ |
768 | void | |
1a1fdef7 | 769 | AliFMDReconstructor::FillESD(TTree* /* digitsTree */, |
770 | TTree* /* clusterTree */, | |
af885e0f | 771 | AliESDEvent* esd) const |
121a60bd | 772 | { |
42403906 | 773 | // nothing to be done |
69b696b9 | 774 | // FIXME: The vertex may not be known when Reconstruct is executed, |
775 | // so we may have to move some of that member function here. | |
f95a63c4 | 776 | AliFMDDebug(2, ("Calling FillESD with two trees and one ESD")); |
8f6ee336 | 777 | // fESDObj->Print(); |
778 | ||
50b9d194 | 779 | Double_t oldVz = fCurrentVertex; |
8983e5ae | 780 | GetVertex(esd); |
50b9d194 | 781 | if (fVertexType != kNoVertex) { |
782 | AliFMDDebug(2, ("Revertexing the ESD data to vz=%f (was %f)", | |
783 | fCurrentVertex, oldVz)); | |
784 | AliFMDESDRevertexer revertexer; | |
785 | revertexer.Revertex(fESDObj, fCurrentVertex); | |
786 | } | |
787 | ||
8f6ee336 | 788 | if (esd) { |
f95a63c4 | 789 | AliFMDDebug(2, ("Writing FMD data to ESD tree")); |
8f6ee336 | 790 | esd->SetFMDData(fESDObj); |
a3537838 | 791 | } |
9684be2f | 792 | |
793 | if (!fDiagnostics || !esd) return; | |
794 | static bool first = true; | |
69893a66 | 795 | // This is most likely NOT the event number you'd like to use. It |
796 | // has nothing to do with the 'real' event number. | |
797 | // - That's OK. We just use it for the name of the directory - | |
798 | // nothing else. Christian | |
799 | Int_t evno = esd->GetEventNumberInFile(); | |
800 | AliFMDDebug(1, ("Writing diagnostics histograms to FMD.Diag.root/%03d",evno)); | |
9684be2f | 801 | TFile f("FMD.Diag.root", (first ? "RECREATE" : "UPDATE")); |
802 | first = false; | |
803 | f.cd(); | |
804 | TDirectory* d = f.mkdir(Form("%03d", evno), | |
805 | Form("Diagnostics histograms for event # %d", evno)); | |
806 | d->cd(); | |
807 | if (fDiagStep1) fDiagStep1->Write(); | |
808 | if (fDiagStep2) fDiagStep2->Write(); | |
809 | if (fDiagStep3) fDiagStep3->Write(); | |
810 | if (fDiagStep4) fDiagStep4->Write(); | |
811 | if (fDiagAll) fDiagAll->Write(); | |
812 | d->Write(); | |
813 | f.Write(); | |
814 | f.Close(); | |
815 | ||
816 | if (fDiagStep1) fDiagStep1->Reset(); | |
817 | if (fDiagStep2) fDiagStep2->Reset(); | |
818 | if (fDiagStep3) fDiagStep3->Reset(); | |
819 | if (fDiagStep4) fDiagStep4->Reset(); | |
820 | if (fDiagAll) fDiagAll->Reset(); | |
121a60bd | 821 | } |
822 | ||
ddaa8027 | 823 | //____________________________________________________________________ |
824 | void | |
825 | AliFMDReconstructor::FillESD(AliRawReader*, TTree* clusterTree, | |
826 | AliESDEvent* esd) const | |
827 | { | |
828 | TTree* dummy = 0; | |
829 | FillESD(dummy, clusterTree, esd); | |
830 | } | |
831 | ||
42403906 | 832 | //____________________________________________________________________ |
833 | // | |
834 | // EOF | |
835 | // |