]>
Commit | Line | Data |
---|---|---|
9608df41 | 1 | /* $Id$ */ |
2 | ||
3 | #include "AliHighMultiplicitySelector.h" | |
4 | ||
5 | #include <TVector3.h> | |
6 | #include <TFile.h> | |
7 | #include <TH1F.h> | |
8 | #include <TH2F.h> | |
9 | #include <TNtuple.h> | |
10 | #include <TProfile.h> | |
11 | #include <TParticle.h> | |
12 | #include <TCanvas.h> | |
13 | #include <TTree.h> | |
14 | #include <TGeoManager.h> | |
15 | #include <TF1.h> | |
16 | #include <TGraph.h> | |
17 | #include <TLegend.h> | |
18 | #include <TLine.h> | |
19 | ||
20 | #include <AliLog.h> | |
21 | #include <AliESD.h> | |
22 | #include <AliRunLoader.h> | |
23 | #include <AliStack.h> | |
24 | ||
25 | #include <AliITSgeom.h> | |
26 | #include <AliITSLoader.h> | |
27 | #include <AliITSdigitSPD.h> | |
28 | #include <AliITSRecPoint.h> | |
29 | ||
30 | #include "AliPWG0Helper.h" | |
31 | ||
32 | // | |
a9aed06c | 33 | // Selector that produces plots needed for the high multiplicity analysis with the |
34 | // pixel detector | |
35 | // Needs cluster file | |
9608df41 | 36 | // |
37 | ||
38 | ClassImp(AliHighMultiplicitySelector) | |
39 | ||
40 | AliHighMultiplicitySelector::AliHighMultiplicitySelector() : | |
41 | AliSelectorRL(), | |
42 | fChipsLayer1(0), | |
43 | fChipsLayer2(0), | |
44 | fL1vsL2(0), | |
45 | fMvsL1(0), | |
46 | fMvsL2(0), | |
47 | fChipsFired(0), | |
48 | fPrimaryL1(0), | |
49 | fPrimaryL2(0), | |
50 | fClusterZL1(0), | |
51 | fClusterZL2(0), | |
52 | fClvsL1(0), | |
53 | fClvsL2(0), | |
a9aed06c | 54 | fCentralRegion(kFALSE) |
9608df41 | 55 | { |
56 | // | |
57 | // Constructor. Initialization of pointers | |
58 | // | |
59 | } | |
60 | ||
61 | AliHighMultiplicitySelector::~AliHighMultiplicitySelector() | |
62 | { | |
63 | // | |
64 | // Destructor | |
65 | // | |
66 | ||
67 | // histograms are in the output list and deleted when the output | |
68 | // list is deleted by the TSelector dtor | |
69 | } | |
70 | ||
71 | void AliHighMultiplicitySelector::SlaveBegin(TTree *tree) | |
72 | { | |
a9aed06c | 73 | // create histograms |
74 | ||
9608df41 | 75 | AliSelectorRL::SlaveBegin(tree); |
76 | ||
77 | fChipsFired = new TH2F("fChipsFired", ";Module;Chip;Count", 240, -0.5, 239.5, 5, -0.5, 4.5); | |
78 | ||
79 | fPrimaryL1 = new TNtuple("fPrimaryL1", "", "multiplicity:firedChips:chipsByPrimaries:clusters"); | |
80 | fPrimaryL2 = new TNtuple("fPrimaryL2", "", "multiplicity:firedChips:chipsByPrimaries:clusters"); | |
81 | ||
82 | fClusterZL1 = new TH1F("fClusterZL1", ";z", 400, -20, 20); | |
83 | fClusterZL2 = new TH1F("fClusterZL2", ";z", 400, -20, 20); | |
84 | } | |
85 | ||
86 | void AliHighMultiplicitySelector::Init(TTree* tree) | |
87 | { | |
88 | // read the user objects | |
89 | ||
90 | AliSelectorRL::Init(tree); | |
91 | ||
92 | // enable only the needed branches | |
93 | if (tree) | |
94 | { | |
95 | tree->SetBranchStatus("*", 0); | |
96 | tree->SetBranchStatus("fTriggerMask", 1); | |
97 | ||
98 | /*if (fTree->GetCurrentFile()) | |
99 | { | |
100 | TString fileName(fTree->GetCurrentFile()->GetName()); | |
101 | fileName.ReplaceAll("AliESDs", "geometry"); | |
102 | ||
103 | // load geometry | |
104 | TGeoManager::Import(fileName); | |
105 | }*/ | |
106 | } | |
107 | } | |
108 | ||
109 | Bool_t AliHighMultiplicitySelector::Process(Long64_t entry) | |
110 | { | |
111 | // | |
112 | // processing | |
113 | // | |
114 | ||
115 | if (AliSelectorRL::Process(entry) == kFALSE) | |
116 | return kFALSE; | |
117 | ||
118 | // Check prerequisites | |
119 | if (!fESD) | |
120 | { | |
121 | AliDebug(AliLog::kError, "ESD branch not available"); | |
122 | return kFALSE; | |
123 | } | |
124 | ||
125 | Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD, AliPWG0Helper::kMB1); | |
126 | ||
127 | if (!eventTriggered) | |
128 | { | |
129 | AliDebug(AliLog::kDebug, "Event not triggered. Skipping."); | |
130 | return kTRUE; | |
131 | } | |
132 | ||
133 | AliStack* stack = GetStack(); | |
134 | if (!stack) | |
135 | { | |
136 | AliDebug(AliLog::kError, "Stack not available"); | |
137 | return kFALSE; | |
138 | } | |
139 | ||
140 | Int_t nPrim = stack->GetNprimary(); | |
141 | Int_t multiplicity21 = 0; | |
142 | Int_t multiplicity16 = 0; | |
143 | ||
144 | for (Int_t iMc = 0; iMc < nPrim; ++iMc) | |
145 | { | |
146 | AliDebug(AliLog::kDebug+1, Form("MC Loop: Processing particle %d.", iMc)); | |
147 | ||
148 | TParticle* particle = stack->Particle(iMc); | |
149 | ||
150 | if (!particle) | |
151 | { | |
152 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (mc loop).", iMc)); | |
153 | continue; | |
154 | } | |
155 | ||
156 | if (AliPWG0Helper::IsPrimaryCharged(particle, nPrim) == kFALSE) | |
157 | continue; | |
158 | ||
a9aed06c | 159 | if (fCentralRegion) |
9608df41 | 160 | { |
161 | if (TMath::Abs(particle->Eta()) < 1.05) | |
162 | multiplicity21++; | |
163 | if (TMath::Abs(particle->Eta()) < 0.8) | |
164 | multiplicity16++; | |
165 | } | |
166 | else | |
167 | { | |
168 | if (TMath::Abs(particle->Eta()) < 2.1) | |
169 | multiplicity21++; | |
170 | if (TMath::Abs(particle->Eta()) < 1.6) | |
171 | multiplicity16++; | |
172 | } | |
173 | }// end of mc particle | |
174 | ||
175 | AliRunLoader* runLoader = GetRunLoader(); | |
176 | if (!runLoader) | |
177 | { | |
178 | AliDebug(AliLog::kError, "runloader not available"); | |
179 | return kFALSE; | |
180 | } | |
181 | ||
182 | // TDirectory::TContext restores the current directory is restored when the scope ends. | |
183 | // This helps around ROOT bug #26025 and is good behaviour anyway | |
184 | TDirectory::TContext context(0); | |
185 | AliITSLoader* loader = (AliITSLoader*) runLoader->GetLoader( "ITSLoader" ); | |
186 | loader->LoadDigits("READ"); | |
187 | TTree* treeD = loader->TreeD(); | |
188 | if (!treeD) | |
189 | { | |
190 | AliDebug(AliLog::kError, "Could not retrieve TreeD of ITS"); | |
191 | return kFALSE; | |
192 | } | |
193 | ||
194 | treeD->SetBranchStatus("*", 0); | |
195 | treeD->SetBranchStatus("ITSDigitsSPD.fTracks*", 1); | |
196 | treeD->SetBranchStatus("ITSDigitsSPD.fCoord1", 1); | |
197 | ||
198 | TClonesArray* digits = 0; | |
199 | treeD->SetBranchAddress("ITSDigitsSPD", &digits); | |
200 | if (digits); | |
201 | digits->Clear(); | |
202 | ||
203 | // each value for both layers | |
204 | Int_t totalNumberOfFO[2]; | |
205 | Int_t chipsHitByPrimaries[2]; | |
206 | //Int_t chipsHitBySecondaries[2]; | |
207 | ||
208 | for (Int_t i=0; i<2; ++i) | |
209 | { | |
210 | totalNumberOfFO[i] = 0; | |
211 | chipsHitByPrimaries[i] = 0; | |
212 | //chipsHitBySecondaries[i] = 0; | |
213 | } | |
214 | ||
215 | Int_t startSPD = 0; //geom->GetStartSPD(); | |
216 | Int_t lastSPD = 239; //geom->GetLastSPD(); | |
217 | ||
218 | //printf("%d %d\n", startSPD, lastSPD); | |
219 | // for (Int_t l=0; l<240; ++l) { AliITSgeomTGeo::GetModuleId(l, i, j, k); printf("%d --> %d\n", l, i); } | |
220 | ||
221 | // loop over modules (ladders) | |
222 | for (Int_t moduleIndex=startSPD; moduleIndex<lastSPD+1; moduleIndex++) | |
223 | { | |
a9aed06c | 224 | if (fCentralRegion) |
9608df41 | 225 | { |
226 | if ((moduleIndex % 4) == 0 || (moduleIndex % 4) == 3) | |
227 | continue; | |
228 | } | |
229 | ||
230 | Int_t currentLayer = 0; | |
231 | if (moduleIndex >= 80) | |
232 | currentLayer = 1; | |
233 | ||
234 | treeD->GetEvent(moduleIndex); | |
235 | ||
236 | // get number of digits in this module | |
237 | Int_t ndigitsInModule = digits->GetEntriesFast(); | |
238 | ||
239 | // get number of digits in each chip of the module | |
240 | Int_t ndigitsInChip[5]; | |
241 | Bool_t hitByPrimary[5]; | |
242 | for( Int_t iChip=0; iChip<5; iChip++) | |
243 | { | |
244 | ndigitsInChip[iChip]=0; | |
245 | hitByPrimary[iChip] = kFALSE; | |
246 | } | |
247 | ||
248 | // loop over digits in this module | |
249 | for (Int_t iDig=0; iDig<ndigitsInModule; iDig++) | |
250 | { | |
251 | AliITSdigitSPD* dp = (AliITSdigitSPD*) digits->At(iDig); | |
252 | Int_t column = dp->GetCoord1(); | |
253 | Int_t isChip = column / 32; | |
254 | ||
255 | //printf("Digit %d has column %d which translates to chip %d\n", iDig, column, isChip); | |
256 | ||
257 | fChipsFired->Fill(moduleIndex, isChip); | |
258 | ||
259 | ndigitsInChip[isChip]++; | |
260 | ||
261 | Bool_t debug = kFALSE; | |
262 | ||
263 | // find out which particle caused this chip to fire | |
264 | // if we find at least one primary we consider this chip being fired by a primary | |
265 | for (Int_t track=0; track<10; ++track) | |
266 | { | |
267 | Int_t label = dp->GetTrack(track); | |
268 | ||
269 | if (label < 0) | |
270 | continue; | |
271 | ||
272 | if (debug) | |
273 | printf("track %d contains label %d\n", track, label); | |
274 | ||
275 | TParticle* particle = stack->Particle(label); | |
276 | ||
277 | if (!particle) | |
278 | { | |
279 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (digit loop).", label)); | |
280 | continue; | |
281 | } | |
282 | ||
283 | if (debug) | |
284 | { | |
285 | particle->Print(); | |
286 | printf("statuscode = %d, p = %f, m = %d\n", particle->GetStatusCode(), particle->P(), particle->GetFirstMother()); | |
287 | } | |
288 | ||
289 | // TODO delta electrons should be traced back to their mother. this is e.g. solved in AliITSClusterFinderV2::CheckLabels2 | |
290 | while (particle->P() < 0.02 && particle->GetStatusCode() == 0 && particle->GetFirstMother() >= 0) | |
291 | { | |
292 | label = particle->GetFirstMother(); | |
293 | particle = stack->Particle(label); | |
294 | ||
295 | if (!particle) | |
296 | break; | |
297 | ||
298 | if (debug) | |
299 | { | |
300 | printf("-->\n"); | |
301 | printf("statuscode = %d, p = %f, m = %d\n", particle->GetStatusCode(), particle->P(), particle->GetFirstMother()); | |
302 | particle->Print(); | |
303 | } | |
304 | } | |
305 | ||
306 | if (!particle) | |
307 | { | |
308 | AliDebug(AliLog::kError, Form("UNEXPECTED: particle with label %d not found in stack (digit loop, finding delta electrons).", label)); | |
309 | continue; | |
310 | } | |
311 | ||
312 | if (label > nPrim) | |
313 | continue; | |
314 | ||
315 | if (AliPWG0Helper::IsPrimaryCharged(particle, nPrim) == kFALSE) | |
316 | continue; | |
317 | ||
318 | if (debug) | |
319 | printf("This was a primary (or delta-electron of a primary)!\n"); | |
320 | ||
321 | hitByPrimary[isChip] = kTRUE; | |
322 | } | |
323 | } | |
324 | ||
325 | // get number of FOs in the module | |
326 | for (Int_t ifChip=0; ifChip<5; ifChip++) | |
327 | if( ndigitsInChip[ifChip] >= 1 ) | |
328 | { | |
329 | totalNumberOfFO[currentLayer]++; | |
330 | if (hitByPrimary[ifChip]) | |
331 | { | |
332 | chipsHitByPrimaries[currentLayer]++; | |
333 | } | |
334 | //else | |
335 | // chipsHitBySecondaries[currentLayer]++; | |
336 | } | |
337 | } | |
338 | ||
339 | //printf("Fired chips: %d %d\n", totalNumberOfFOLayer1, totalNumberOfFOLayer2); | |
340 | ||
341 | // now find clusters | |
342 | Int_t clustersLayer[2]; | |
343 | clustersLayer[0] = 0; | |
344 | clustersLayer[1] = 0; | |
345 | ||
346 | loader->LoadRecPoints("READ"); | |
347 | TTree* treeR = loader->TreeR(); | |
348 | if (!treeR) | |
349 | { | |
350 | AliDebug(AliLog::kError, "Could not retrieve TreeR of ITS"); | |
351 | return kFALSE; | |
352 | } | |
353 | ||
354 | // TODO branches! | |
355 | //treeR->SetBranchStatus("*", 0); | |
356 | ||
357 | TClonesArray* itsClusters = 0; | |
358 | treeR->SetBranchAddress("ITSRecPoints", &itsClusters); | |
359 | ||
360 | Int_t nTreeEntries = treeR->GetEntries(); | |
361 | for (Int_t iEntry = 0; iEntry < nTreeEntries; ++iEntry) | |
362 | { | |
363 | if (!treeR->GetEvent(iEntry)) | |
364 | continue; | |
365 | ||
366 | Int_t nClusters = itsClusters->GetEntriesFast(); | |
367 | ||
368 | while(nClusters--) | |
369 | { | |
370 | AliITSRecPoint* cluster = (AliITSRecPoint*) itsClusters->UncheckedAt(nClusters); | |
371 | ||
372 | if (cluster->GetLayer() == 0) | |
373 | { | |
374 | clustersLayer[0]++; | |
375 | fClusterZL1->Fill(cluster->GetZ()); | |
376 | } | |
377 | else if (cluster->GetLayer() == 1) | |
378 | { | |
379 | clustersLayer[1]++; | |
380 | fClusterZL2->Fill(cluster->GetZ()); | |
381 | } | |
382 | } | |
383 | } | |
384 | ||
385 | fPrimaryL1->Fill(multiplicity21, totalNumberOfFO[0], chipsHitByPrimaries[0], clustersLayer[0]); | |
386 | fPrimaryL2->Fill(multiplicity16, totalNumberOfFO[1], chipsHitByPrimaries[1], clustersLayer[1]); | |
387 | ||
388 | return kTRUE; | |
389 | } | |
390 | ||
391 | Bool_t AliHighMultiplicitySelector::Notify() | |
392 | { | |
a9aed06c | 393 | // get next ITS runloader |
394 | ||
9608df41 | 395 | AliRunLoader* runLoader = GetRunLoader(); |
396 | ||
397 | if (runLoader) | |
398 | { | |
399 | AliITSLoader* loader = (AliITSLoader* )runLoader->GetLoader( "ITSLoader" ); | |
400 | if (loader) | |
401 | { | |
402 | loader->UnloadDigits(); | |
403 | loader->UnloadRecPoints(); | |
404 | } | |
405 | } | |
406 | ||
407 | return AliSelectorRL::Notify(); | |
408 | } | |
409 | ||
410 | void AliHighMultiplicitySelector::SlaveTerminate() | |
411 | { | |
412 | // The SlaveTerminate() function is called after all entries or objects | |
413 | // have been processed. When running with PROOF SlaveTerminate() is called | |
414 | // on each slave server. | |
415 | ||
416 | AliSelectorRL::SlaveTerminate(); | |
417 | ||
418 | // Add the histograms to the output on each slave server | |
419 | if (!fOutput) | |
420 | { | |
421 | AliDebug(AliLog::kError, "ERROR: Output list not initialized."); | |
422 | return; | |
423 | } | |
424 | ||
425 | fOutput->Add(fChipsFired); | |
426 | fOutput->Add(fPrimaryL1); | |
427 | fOutput->Add(fPrimaryL2); | |
428 | fOutput->Add(fClusterZL1); | |
429 | fOutput->Add(fClusterZL2); | |
430 | } | |
431 | ||
432 | void AliHighMultiplicitySelector::Terminate() | |
433 | { | |
434 | // The Terminate() function is the last function to be called during | |
435 | // a query. It always runs on the client, it can be used to present | |
436 | // the results graphically or save the results to file. | |
437 | ||
438 | AliSelectorRL::Terminate(); | |
439 | ||
440 | fChipsFired = dynamic_cast<TH2F*> (fOutput->FindObject("fChipsFired")); | |
441 | fPrimaryL1 = dynamic_cast<TNtuple*> (fOutput->FindObject("fPrimaryL1")); | |
442 | fPrimaryL2 = dynamic_cast<TNtuple*> (fOutput->FindObject("fPrimaryL2")); | |
443 | fClusterZL1 = dynamic_cast<TH1F*> (fOutput->FindObject("fClusterZL1")); | |
444 | fClusterZL2 = dynamic_cast<TH1F*> (fOutput->FindObject("fClusterZL2")); | |
445 | ||
446 | if (!fClusterZL1 || !fClusterZL2 || !fChipsFired || !fPrimaryL1 || !fPrimaryL2) | |
447 | { | |
448 | AliError("Histograms not available"); | |
449 | return; | |
450 | } | |
451 | ||
452 | WriteHistograms(); | |
453 | } | |
454 | ||
455 | void AliHighMultiplicitySelector::WriteHistograms(const char* filename) | |
456 | { | |
a9aed06c | 457 | // write the histograms to a file |
458 | ||
9608df41 | 459 | TFile* file = TFile::Open(filename, "RECREATE"); |
460 | ||
461 | fChipsFired->Write(); | |
462 | fPrimaryL1->Write(); | |
463 | fPrimaryL2->Write(); | |
464 | fClusterZL1->Write(); | |
465 | fClusterZL2->Write(); | |
466 | ||
467 | file->Close(); | |
468 | } | |
469 | ||
470 | void AliHighMultiplicitySelector::ReadHistograms(const char* filename) | |
471 | { | |
a9aed06c | 472 | // read the data from a file and fill histograms |
473 | ||
9608df41 | 474 | TFile* file = TFile::Open(filename); |
475 | ||
476 | if (!file) | |
477 | return; | |
478 | ||
479 | fPrimaryL1 = dynamic_cast<TNtuple*> (file->Get("fPrimaryL1")); | |
480 | fPrimaryL2 = dynamic_cast<TNtuple*> (file->Get("fPrimaryL2")); | |
481 | fChipsFired = dynamic_cast<TH2F*> (file->Get("fChipsFired")); | |
482 | fClusterZL1 = dynamic_cast<TH1F*> (file->Get("fClusterZL1")); | |
483 | fClusterZL2 = dynamic_cast<TH1F*> (file->Get("fClusterZL2")); | |
484 | ||
485 | #define MULT 1001, -0.5, 1000.5 | |
486 | #define BINNING_LAYER1 401, -0.5, 400.5 | |
487 | #define BINNING_LAYER2 801, -0.5, 800.5 | |
488 | ||
489 | fChipsLayer1 = new TH1F("fChipsLayer1", "Layer 1;Fired Chips;Count", BINNING_LAYER1); | |
490 | fChipsLayer2 = new TH1F("fChipsLayer2", "Layer 2;Fired Chips;Count", BINNING_LAYER2); | |
491 | ||
492 | fL1vsL2 = new TH2F("fL1vsL2", ";Fired Chips Layer 1;Fired Chips Layer 2", BINNING_LAYER1, BINNING_LAYER2); | |
493 | fMvsL1 = new TH2F("fMvsL1", ";true multiplicity;fired chips layer1", MULT, BINNING_LAYER1); | |
494 | fMvsL2 = new TH2F("fMvsL2", ";true multiplicity;fired chips layer2", MULT, BINNING_LAYER2); | |
495 | ||
496 | fClvsL1 = new TH2F("fClvsL1", ";clusters layer1;fired chips layer1", MULT, BINNING_LAYER1); | |
497 | fClvsL2 = new TH2F("fClvsL2", ";clusters layer2;fired chips layer2", MULT, BINNING_LAYER2); | |
498 | ||
499 | for (Int_t i = 0; i < fPrimaryL1->GetEntries(); i++) | |
500 | { | |
501 | fPrimaryL1->GetEvent(i); | |
502 | fPrimaryL2->GetEvent(i); | |
503 | ||
504 | Int_t multiplicity21 = (Int_t) fPrimaryL1->GetArgs()[0]; | |
505 | Int_t multiplicity16 = (Int_t) fPrimaryL2->GetArgs()[0]; | |
506 | ||
507 | Int_t totalNumberOfFO[2]; | |
508 | totalNumberOfFO[0] = (Int_t) fPrimaryL1->GetArgs()[1]; | |
509 | totalNumberOfFO[1] = (Int_t) fPrimaryL2->GetArgs()[1]; | |
510 | ||
511 | Int_t chipsHitByPrimaries[2]; | |
512 | chipsHitByPrimaries[0] = (Int_t) fPrimaryL1->GetArgs()[2]; | |
513 | chipsHitByPrimaries[1] = (Int_t) fPrimaryL2->GetArgs()[2]; | |
514 | ||
515 | Int_t clustersLayer[2]; | |
516 | clustersLayer[0] = (Int_t) fPrimaryL1->GetArgs()[3]; | |
517 | clustersLayer[1] = (Int_t) fPrimaryL2->GetArgs()[3]; | |
518 | ||
519 | fChipsLayer1->Fill(totalNumberOfFO[0]); | |
520 | fChipsLayer2->Fill(totalNumberOfFO[1]); | |
521 | ||
522 | fL1vsL2->Fill(totalNumberOfFO[0], totalNumberOfFO[1]); | |
523 | ||
524 | fMvsL1->Fill(multiplicity21, totalNumberOfFO[0]); | |
525 | fMvsL2->Fill(multiplicity16, totalNumberOfFO[1]); | |
526 | ||
527 | fClvsL1->Fill(clustersLayer[0], totalNumberOfFO[0]); | |
528 | fClvsL2->Fill(clustersLayer[1], totalNumberOfFO[1]); | |
529 | } | |
530 | } | |
531 | ||
f6093269 | 532 | TH1* AliHighMultiplicitySelector::GetTriggerEfficiency(TH2* multVsLayer, Int_t cut) |
9608df41 | 533 | { |
f6093269 | 534 | // |
535 | // returns the trigger efficiency as function of multiplicity with a given cut | |
536 | // | |
9608df41 | 537 | |
538 | //cut and multiply with x-section | |
f6093269 | 539 | TH1* allEvents = multVsLayer->ProjectionX("fMvsL_x_total", 1, 1001); |
9608df41 | 540 | //allEvents->Sumw2(); |
541 | ||
542 | //cut and multiply with x-section | |
f6093269 | 543 | TH1* proj = multVsLayer->ProjectionX(Form("%s_x", multVsLayer->GetName()), cut, 1001); |
9608df41 | 544 | //proj->Sumw2(); |
545 | ||
f6093269 | 546 | //new TCanvas; allEvents->DrawCopy(); gPad->SetLogy(); |
547 | //new TCanvas; proj->DrawCopy(); gPad->SetLogy(); | |
9608df41 | 548 | |
549 | // make probability distribution out of it | |
550 | // TODO binomial errors do not work??? weird... | |
551 | proj->Divide(proj, allEvents, 1, 1, "B"); | |
552 | ||
f6093269 | 553 | return proj; |
554 | } | |
555 | ||
556 | TH1* AliHighMultiplicitySelector::GetXSectionCut(TH1* xSection, TH2* multVsLayer, Int_t cut) | |
557 | { | |
558 | // returns the rel. cross section of the true spectrum that is measured when a cut at <cut> is performed | |
559 | ||
560 | TH1* proj = GetTriggerEfficiency(multVsLayer, cut); | |
561 | ||
562 | //new TCanvas; proj->DrawCopy(); gPad->SetLogy(); | |
9608df41 | 563 | |
564 | for (Int_t i=1; i<=proj->GetNbinsX(); i++) | |
565 | { | |
566 | if (i <= xSection->GetNbinsX()) | |
567 | { | |
568 | Double_t value = proj->GetBinContent(i) * xSection->GetBinContent(i); | |
569 | Double_t error = 0; | |
570 | ||
571 | if (value != 0) | |
572 | error = value * (proj->GetBinError(i) / proj->GetBinContent(i) + xSection->GetBinError(i) / xSection->GetBinContent(i)); | |
573 | ||
574 | proj->SetBinContent(i, value); | |
575 | proj->SetBinError(i, error); | |
576 | } | |
577 | else | |
578 | { | |
579 | proj->SetBinContent(i, 0); | |
580 | proj->SetBinError(i, 0); | |
581 | } | |
582 | } | |
583 | ||
f6093269 | 584 | //new TCanvas; proj->DrawCopy(); gPad->SetLogy(); |
9608df41 | 585 | |
586 | return proj; | |
587 | } | |
588 | ||
f6093269 | 589 | void AliHighMultiplicitySelector::MakeGraphs2(const char* title, TH1* xSection, TH2* fMvsL) |
9608df41 | 590 | { |
a9aed06c | 591 | // creates graphs |
592 | ||
f6093269 | 593 | TGraph* effGraph = new TGraph; |
594 | effGraph->SetTitle(Form("%s;Cut on fired chips;mult. where eff. >50%%", title)); | |
595 | TGraph* ratioGraph = new TGraph; | |
596 | ratioGraph->SetTitle(Form("%s;Cut on fired chips;x-section_(>=eff. limit) / x-section_(total)", title)); | |
597 | TGraph* totalGraph = new TGraph; | |
598 | totalGraph->SetTitle(Form("%s;Cut on fired chips;rel x-section_(>=eff. limit)", title)); | |
599 | ||
600 | for (Int_t cut = 0; cut <= 300; cut+=50) | |
601 | { | |
602 | TH1* proj = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("clone"); | |
603 | ||
604 | //proj->Rebin(3); | |
605 | //proj->Scale(1.0 / 3); | |
606 | ||
607 | new TCanvas; proj->DrawCopy(); | |
9608df41 | 608 | |
f6093269 | 609 | Int_t limitBin = proj->GetNbinsX()+1; |
610 | while (limitBin > 1 && proj->GetBinContent(limitBin-1) > 0.5) | |
611 | limitBin--; | |
612 | ||
613 | Float_t limit = proj->GetXaxis()->GetBinCenter(limitBin); | |
614 | ||
615 | effGraph->SetPoint(effGraph->GetN(), cut, limit); | |
616 | ||
617 | proj = GetXSectionCut(xSection, fMvsL, cut); | |
618 | ||
619 | Double_t ratio = 0; | |
620 | Double_t total = 0; | |
621 | if (proj->Integral(1, 1001) > 0) | |
622 | { | |
623 | ratio = proj->Integral(proj->FindBin(limit), 1001) / proj->Integral(1, 1001); | |
624 | total = proj->Integral(proj->FindBin(limit), 1001); | |
625 | } | |
626 | ||
627 | ratioGraph->SetPoint(ratioGraph->GetN(), cut, ratio); | |
628 | totalGraph->SetPoint(totalGraph->GetN(), cut, total); | |
629 | ||
630 | Printf("Cut at %d --> trigger eff. is > 0.5 for mult. >= %.2f. That is the case for %f of the triggered, %e of all events", cut, limit, ratio, total); | |
631 | } | |
632 | ||
633 | TCanvas* canvas = new TCanvas(Form("%s_Efficiency", title), Form("%s_Efficiency", title), 1200, 800); | |
634 | canvas->Divide(2, 2); | |
635 | ||
636 | canvas->cd(1); | |
637 | effGraph->Draw("A*"); | |
638 | ||
639 | for (Int_t i=8; i<=10; ++i) | |
640 | { | |
641 | TLine* line = new TLine(0, xSection->GetMean() * i, 300, xSection->GetMean() * i); | |
642 | line->Draw(); | |
643 | } | |
644 | ||
645 | canvas->cd(2); ratioGraph->Draw("A*"); | |
646 | canvas->cd(3); gPad->SetLogy(); totalGraph->Draw("A*"); | |
647 | ||
648 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
649 | } | |
650 | ||
651 | void AliHighMultiplicitySelector::MakeGraphs(const char* title, TH1* xSection, TH2* fMvsL, Int_t limit) | |
652 | { | |
9608df41 | 653 | // relative x-section, once we have a collision |
a9aed06c | 654 | |
9608df41 | 655 | xSection->Scale(1.0 / xSection->Integral()); |
656 | ||
657 | TGraph* ratioGraph = new TGraph; | |
658 | ratioGraph->SetTitle(Form("%s;Cut on fired chips;x-section_(>=%d) / x-section_(total)", title, limit)); | |
659 | TGraph* totalGraph = new TGraph; | |
660 | totalGraph->SetTitle(Form("%s;Cut on fired chips;rel x-section_(>=%d)", title, limit)); | |
661 | ||
662 | Double_t max = 0; | |
663 | Int_t bestCut = -1; | |
664 | Double_t bestRatio = -1; | |
665 | Double_t bestTotal = -1; | |
666 | Int_t fullCut = -1; | |
667 | Double_t fullRatio = -1; | |
668 | Double_t fullTotal = -1; | |
669 | ||
670 | fMvsL->Sumw2(); | |
671 | ||
672 | for (Int_t cut = 50; cut <= 300; cut+=2) | |
673 | { | |
674 | TH1* proj = GetXSectionCut(xSection, fMvsL, cut); | |
675 | ||
676 | Double_t ratio = 0; | |
677 | Double_t total = 0; | |
678 | if (proj->Integral(1, 1000) > 0) | |
679 | { | |
680 | ratio = proj->Integral(limit, 1000) / proj->Integral(1, 1000); | |
681 | total = proj->Integral(limit, 1000); | |
682 | } | |
683 | ||
684 | max = TMath::Max(max, total); | |
685 | ||
686 | //printf("Cut at %d: rel. x-section_(>=%d) = %e; x-section_(>=%d) / x-section_(total) = %f\n", cut, limit, total, limit, ratio); | |
687 | ||
688 | if (total < max * 0.9 && bestCut == -1) | |
689 | { | |
690 | bestCut = cut; | |
691 | bestRatio = ratio; | |
692 | bestTotal = total; | |
693 | } | |
694 | ||
695 | if (ratio == 1 && fullCut == -1) | |
696 | { | |
697 | fullCut = cut; | |
698 | fullRatio = ratio; | |
699 | fullTotal = total; | |
700 | } | |
701 | ||
702 | ratioGraph->SetPoint(ratioGraph->GetN(), cut, ratio); | |
703 | totalGraph->SetPoint(totalGraph->GetN(), cut, total); | |
704 | } | |
705 | ||
706 | if (bestCut != -1) | |
707 | printf("Best cut at %d: rel. x-section_(>=%d) = %e %%; x-section_(>=%d) / x-section_(total) = %f %%\n", bestCut, limit, bestTotal, limit, bestRatio); | |
708 | if (fullCut != -1) | |
709 | printf("100%% cut at %d: rel. x-section_(>=%d) = %e %%; x-section_(>=%d) / x-section_(total) = %f %%\n", fullCut, limit, fullTotal, limit, fullRatio); | |
710 | ||
711 | TCanvas* canvas = new TCanvas(Form("%s_RatioXSection_%d", title, limit), Form("%s_RatioXSection_%d", title, limit), 600, 400); | |
712 | ratioGraph->Draw("A*"); | |
713 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
714 | ||
715 | canvas = new TCanvas(Form("%s_TotalXSection_%d", title, limit), Form("%s_TotalXSection_%d", title, limit), 600, 400); | |
716 | totalGraph->Draw("A*"); | |
717 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
718 | } | |
719 | ||
720 | void AliHighMultiplicitySelector::JPRPlots() | |
721 | { | |
a9aed06c | 722 | // more plots |
723 | ||
9608df41 | 724 | /* |
725 | ||
726 | gSystem->Load("libPWG0base"); | |
727 | .L AliHighMultiplicitySelector.cxx+ | |
728 | x = new AliHighMultiplicitySelector(); | |
729 | x->ReadHistograms("highmult_hijing100k.root"); | |
730 | x->JPRPlots(); | |
731 | ||
732 | */ | |
733 | ||
734 | // get x-sections | |
735 | TFile* file = TFile::Open("crosssectionEx.root"); | |
736 | if (!file) | |
737 | return; | |
738 | ||
739 | TH1* xSections[2]; | |
740 | xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex")); | |
741 | xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex")); | |
742 | ||
743 | for (Int_t i=0; i<2; ++i) | |
744 | { | |
745 | if (!xSections[i]) | |
746 | continue; | |
747 | ||
748 | TH1* xSection = xSections[i]; | |
749 | TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2; | |
750 | //Int_t cut = (i == 0) ? 164 : 150; // 8 times the mean | |
751 | //Int_t cut = (i == 0) ? 178 : 166; // 9 times the mean | |
752 | Int_t cut = (i == 0) ? 190 : 182; // 10 times the mean | |
753 | ||
f6093269 | 754 | // limit is N times the mean |
755 | Int_t limit = (Int_t) (xSection->GetMean() * 10); | |
756 | ||
757 | // 10^28 lum --> 1.2 kHz | |
758 | // 10^31 lum --> 1200 kHz | |
759 | Float_t rate = 1200e3; | |
760 | ||
761 | // time in s | |
762 | Float_t lengthRun = 1e6; | |
763 | ||
9608df41 | 764 | xSection->SetStats(kFALSE); |
f6093269 | 765 | xSection->SetTitle(""); //(i == 0) ? "SPD Layer 1" : "SPD Layer 2"); |
9608df41 | 766 | xSection->GetXaxis()->SetTitle(Form("true multiplicity in |#eta| < %.1f", (i == 0) ? 2.0 : 1.5)); |
767 | xSection->GetXaxis()->SetRangeUser(0, (i == 0) ? 400 : 350); | |
f6093269 | 768 | //xSection->GetYaxis()->SetTitle("relative cross section"); |
9608df41 | 769 | xSection->GetYaxis()->SetTitleOffset(1.2); |
770 | ||
9608df41 | 771 | // relative x-section, once we have a collision |
772 | xSection->Scale(1.0 / xSection->Integral()); | |
773 | ||
774 | TH1* proj = GetXSectionCut(xSection, fMvsL, cut); | |
775 | ||
776 | Double_t ratio = 0; | |
777 | Double_t total = 0; | |
778 | if (proj->Integral(1, 1000) > 0) | |
779 | { | |
780 | ratio = proj->Integral(limit, 1000) / proj->Integral(1, 1000); | |
781 | total = proj->Integral(limit, 1000); | |
782 | } | |
783 | ||
784 | printf("Cut at %d: rel. x-section_(>=%d) = %e; x-section_(>=%d) / x-section_(total) = %f\n", cut, limit, total, limit, ratio); | |
785 | ||
786 | TCanvas* canvas = new TCanvas(Form("HMPlots_%d", i), Form("HMPlots_%d", i), 800, 600); | |
787 | canvas->SetLogy(); | |
788 | xSection->DrawCopy(); | |
789 | proj->SetLineColor(2); | |
790 | proj->SetStats(kFALSE); | |
791 | proj->DrawCopy("SAME"); | |
792 | ||
793 | TLegend* legend = new TLegend(0.15, 0.15, 0.45, 0.3); | |
794 | legend->SetFillColor(0); | |
795 | legend->AddEntry(xSection, "no trigger"); | |
796 | legend->AddEntry(proj, Form("FO trigger > %d chips", cut)); | |
797 | legend->Draw(); | |
798 | ||
799 | TLine* line = new TLine(limit, xSection->GetMinimum() * 0.5, limit, xSection->GetMaximum() * 2); | |
800 | line->SetLineWidth(2); | |
801 | line->Draw(); | |
802 | ||
803 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
804 | ||
805 | TCanvas* canvas2 = new TCanvas(Form("HMPlots_%d_Random", i), Form("HMPlots_%d_Random", i), 800, 600); | |
f6093269 | 806 | //canvas2->SetTopMargin(0.05); |
807 | //canvas2->SetRightMargin(0.05); | |
9608df41 | 808 | canvas2->SetLogy(); |
f6093269 | 809 | xSection->DrawCopy("HIST"); |
9608df41 | 810 | |
f6093269 | 811 | TLegend* legend2 = new TLegend(0.15, 0.15, 0.6, 0.3); |
9608df41 | 812 | legend2->SetFillColor(0); |
813 | legend2->AddEntry(xSection, "no trigger"); | |
814 | ||
815 | TH1* proj2 = (TH1*) proj->Clone("random"); | |
816 | proj2->Reset(); | |
f6093269 | 817 | // MB lengthRun s 100 Hz |
818 | Int_t nTrigger = (Int_t) (100 * lengthRun * proj->Integral(1, 1000)); | |
9608df41 | 819 | proj2->FillRandom(proj, nTrigger); |
820 | ||
821 | TH1* proj3 = (TH1*) proj2->Clone("random_clone"); | |
822 | proj3->Divide(proj); | |
823 | proj3->Fit("pol0", "0", ""); | |
824 | proj2->Scale(1.0 / proj3->GetFunction("pol0")->GetParameter(0)); | |
825 | ||
f6093269 | 826 | /* |
9608df41 | 827 | proj2->DrawCopy("SAME"); |
828 | legend2->AddEntry(proj2, Form("%d evts, FO > %d chips (%d evts)", nTrigger, cut, (Int_t) (nTrigger * ratio))); | |
f6093269 | 829 | */ |
9608df41 | 830 | |
831 | proj2 = (TH1*) proj->Clone("random2"); | |
832 | proj2->Reset(); | |
f6093269 | 833 | // 10^31 lum --> 1200 kHz; lengthRun s |
834 | nTrigger = (Int_t) (rate * proj->Integral(1, 1000) * lengthRun); | |
9608df41 | 835 | proj2->FillRandom(proj, nTrigger); |
836 | ||
837 | proj3 = (TH1*) proj2->Clone("random_clone2"); | |
838 | proj3->Divide(proj); | |
839 | proj3->Fit("pol0", "0", ""); | |
840 | proj2->Scale(1.0 / proj3->GetFunction("pol0")->GetParameter(0)); | |
841 | ||
842 | proj2->SetLineColor(4); | |
f6093269 | 843 | proj2->SetMarkerStyle(7); |
844 | proj2->SetMarkerColor(4); | |
845 | proj2->DrawCopy("SAME P"); | |
846 | //legend2->AddEntry(proj2, Form("%d evts, FO > %d chips (%d evts)", nTrigger, cut, (Int_t) (nTrigger * ratio))); | |
847 | legend2->AddEntry(proj2, Form("FO trigger > %d chips", cut)); | |
9608df41 | 848 | |
849 | legend2->Draw(); | |
850 | line->Draw(); | |
851 | ||
852 | canvas2->SaveAs(Form("%s.gif", canvas2->GetName())); | |
f6093269 | 853 | canvas2->SaveAs(Form("%s.eps", canvas2->GetName())); |
9608df41 | 854 | } |
855 | } | |
856 | ||
d1594f8a | 857 | void AliHighMultiplicitySelector::Ntrigger(Bool_t relative) |
f91bc12d | 858 | { |
859 | // | |
860 | // produces a spectrum created with N triggers | |
861 | // number of triggers and thresholds for the moment fixed | |
862 | // | |
863 | ||
864 | /* | |
865 | ||
866 | gSystem->Load("libPWG0base"); | |
867 | .L AliHighMultiplicitySelector.cxx+g | |
868 | x = new AliHighMultiplicitySelector(); | |
869 | x->ReadHistograms("highmult_hijing100k.root"); | |
870 | x->Ntrigger(); | |
871 | ||
d1594f8a | 872 | gSystem->Load("libPWG0base"); |
873 | .L AliHighMultiplicitySelector.cxx+g | |
874 | x = new AliHighMultiplicitySelector(); | |
875 | x->ReadHistograms("highmult_hijing100k.root"); | |
876 | x->Ntrigger(kFALSE); | |
877 | ||
f91bc12d | 878 | */ |
879 | ||
880 | // get x-sections | |
881 | TFile* file = TFile::Open("crosssectionEx.root"); | |
882 | if (!file) | |
883 | return; | |
884 | ||
885 | TH1* xSections[2]; | |
886 | xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex")); | |
887 | xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex")); | |
888 | ||
889 | // 10^28 lum --> 1.2 kHz | |
890 | // 10^31 lum --> 1200 kHz | |
891 | //Float_t rate = 1200e3; | |
a9aed06c | 892 | Float_t rate = 250e3; |
f91bc12d | 893 | |
894 | // time in s | |
895 | Float_t lengthRun = 1e6; | |
896 | ||
897 | Int_t colors[] = { 2, 3, 4, 6, 7, 8 }; | |
898 | Int_t markers[] = { 7, 2, 4, 5, 6, 27 }; | |
899 | ||
900 | // put to 2 for second layer | |
901 | for (Int_t i=0; i<1; ++i) | |
902 | { | |
903 | if (!xSections[i]) | |
904 | continue; | |
905 | ||
906 | TH1* xSection = xSections[i]; | |
907 | TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2; | |
908 | ||
a9aed06c | 909 | //Int_t nCuts = 6; |
910 | //Int_t cuts[] = { 0, 164, 178, 190, 204, 216 }; | |
f91bc12d | 911 | //Int_t nCuts = 4; |
912 | //Int_t cuts[] = { 0, 164, 190, 216 }; | |
d1594f8a | 913 | |
914 | //Int_t nCuts = 4; | |
915 | //Int_t cuts[] = { 0, 114, 145, 165 }; | |
916 | //Float_t ratePerTrigger[] = { 60, 13.3, 13.3, 13.3 }; | |
917 | ||
918 | Int_t nCuts = 3; | |
919 | Int_t cuts[] = { 0, 126, 162 }; | |
920 | Float_t ratePerTrigger[] = { 60, 20.0, 20.0 }; | |
a9aed06c | 921 | |
f91bc12d | 922 | // desired trigger rate in Hz |
a9aed06c | 923 | //Float_t ratePerTrigger[] = { 100, 1, 1, 1, 1, 1 }; |
f91bc12d | 924 | |
925 | xSection->SetStats(kFALSE); | |
926 | xSection->SetTitle(""); //(i == 0) ? "SPD Layer 1" : "SPD Layer 2"); | |
927 | xSection->GetXaxis()->SetTitle(Form("true multiplicity in |#eta| < %.1f", (i == 0) ? 2.0 : 1.5)); | |
928 | xSection->GetXaxis()->SetRangeUser(0, (i == 0) ? 450 : 350); | |
929 | //xSection->GetYaxis()->SetTitle("relative cross section"); | |
930 | xSection->GetYaxis()->SetTitleOffset(1.2); | |
931 | ||
932 | // relative x-section, once we have a collision | |
933 | xSection->Scale(1.0 / xSection->Integral()); | |
934 | ||
935 | TCanvas* canvas2 = new TCanvas(Form("HMPlots2_%d_Random", i), Form("HMPlots2_%d_Random", i), 800, 600); | |
936 | canvas2->SetTopMargin(0.05); | |
937 | canvas2->SetRightMargin(0.05); | |
938 | canvas2->SetLogy(); | |
d1594f8a | 939 | |
940 | if (relative) | |
941 | xSection->DrawCopy("HIST"); | |
f91bc12d | 942 | |
943 | TLegend* legend2 = new TLegend(0.15, 0.15, 0.6, 0.4); | |
944 | legend2->SetFillColor(0); | |
945 | legend2->AddEntry(xSection, "cross-section"); | |
946 | ||
947 | for (Int_t currentCut = 0; currentCut<nCuts; ++currentCut) | |
948 | { | |
949 | Int_t cut = cuts[currentCut]; | |
950 | ||
d1594f8a | 951 | TH1* triggerEff = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff"); |
952 | ||
f91bc12d | 953 | TH1* proj = GetXSectionCut(xSection, fMvsL, cut); |
954 | ||
d1594f8a | 955 | Float_t triggerLimit = 0; |
956 | for (Int_t bin = 1; bin <= triggerEff->GetNbinsX(); bin++) | |
957 | if (triggerEff->GetBinContent(bin) < 0.5) | |
958 | triggerLimit = triggerEff->GetXaxis()->GetBinCenter(bin); | |
959 | ||
960 | Printf("Efficiency limit (50%%) is at multiplicity %f", triggerLimit); | |
961 | ||
f91bc12d | 962 | Double_t total = 0; |
963 | if (proj->Integral(1, 1000) > 0) | |
964 | total = proj->Integral(1, 1000); | |
965 | ||
966 | printf("Cut at %d: rel. x-section = %e\n", cut, total); | |
967 | ||
968 | TH1* proj2 = (TH1*) proj->Clone("random2"); | |
969 | proj2->Reset(); | |
970 | ||
971 | // calculate downscale factor | |
972 | Float_t normalRate = rate * proj->Integral(1, 1000); | |
973 | Float_t downScale = normalRate / ratePerTrigger[currentCut]; | |
974 | if (downScale < 1) | |
975 | downScale = 1; | |
976 | Long64_t nTrigger = (Long64_t) (normalRate / downScale * lengthRun); | |
977 | ||
978 | Printf("Normal rate is %f, downscale: %f, Simulating %lld triggers", normalRate, downScale, nTrigger); | |
979 | proj2->FillRandom(proj, nTrigger); | |
980 | ||
981 | Int_t removed = 0; | |
982 | for (Int_t bin=1; bin<proj2->GetNbinsX(); ++bin) | |
983 | if (proj2->GetBinContent(bin) < 5) | |
984 | { | |
985 | removed += (Int_t) proj2->GetBinContent(bin); | |
986 | proj2->SetBinContent(bin, 0); | |
987 | } | |
988 | ||
989 | Printf("Removed %d events", removed); | |
990 | ||
d1594f8a | 991 | if (relative) |
992 | proj2->Scale(1.0 / nTrigger * proj->Integral(1, 1000)); | |
f91bc12d | 993 | |
994 | proj2->SetLineColor(colors[currentCut]); | |
995 | proj2->SetMarkerStyle(markers[currentCut]); | |
996 | proj2->SetMarkerColor(colors[currentCut]); | |
d1594f8a | 997 | |
998 | if (relative || currentCut > 0) { | |
999 | proj2->DrawCopy("SAME P"); | |
1000 | } else | |
1001 | proj2->DrawCopy(" P"); | |
1002 | ||
f91bc12d | 1003 | legend2->AddEntry(proj2, Form("%lld evts, FO > %d chips", nTrigger, cut)); |
d1594f8a | 1004 | |
1005 | TLine* line = new TLine(triggerLimit, proj2->GetMinimum(), triggerLimit, proj2->GetMaximum()); | |
1006 | line->SetLineColor(colors[currentCut]); | |
1007 | line->Draw(); | |
f91bc12d | 1008 | } |
1009 | ||
1010 | legend2->Draw(); | |
1011 | ||
1012 | canvas2->SaveAs(Form("%s.gif", canvas2->GetName())); | |
1013 | canvas2->SaveAs(Form("%s.eps", canvas2->GetName())); | |
1014 | } | |
1015 | } | |
1016 | ||
d1594f8a | 1017 | void AliHighMultiplicitySelector::Contamination() |
1018 | { | |
1019 | // | |
1020 | // produces a spectrum created with N triggers | |
1021 | // number of triggers and thresholds for the moment fixed | |
1022 | // | |
1023 | ||
1024 | /* | |
1025 | ||
1026 | gSystem->Load("libANALYSIS"); | |
1027 | gSystem->Load("libPWG0base"); | |
1028 | .L AliHighMultiplicitySelector.cxx+g | |
1029 | x = new AliHighMultiplicitySelector(); | |
1030 | x->ReadHistograms("highmult_hijing100k.root"); | |
1031 | x->Contamination(); | |
1032 | ||
1033 | */ | |
1034 | ||
1035 | // get x-sections | |
1036 | TFile* file = TFile::Open("crosssectionEx.root"); | |
1037 | if (!file) | |
1038 | return; | |
1039 | ||
1040 | TH1* xSections[2]; | |
1041 | xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex")); | |
1042 | xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex")); | |
1043 | ||
1044 | // rate = L * sigma | |
1045 | // sigma ~ 80 mb (Pythia 14 TeV) | |
1046 | // 10^28 lum --> 8e2 Hz | |
1047 | // 10^31 lum --> 8e5 Hz | |
1048 | Double_t rates[] = { 8e2, 8e3, 8e4, 8e5 }; | |
1049 | ||
1050 | Int_t nCuts = 4; | |
1051 | Int_t cuts[] = { 104, 134, 154, 170 }; | |
1052 | ||
1053 | // put to 2 for second layer | |
1054 | for (Int_t i=0; i<1; ++i) | |
1055 | { | |
1056 | if (!xSections[i]) | |
1057 | continue; | |
1058 | ||
1059 | // relative x-section, once we have a collision | |
1060 | xSections[i]->Scale(1.0 / xSections[i]->Integral()); | |
1061 | ||
1062 | Int_t max = xSections[i]->GetNbinsX(); | |
1063 | max = 500; | |
1064 | ||
1065 | Float_t* xSection = new Float_t[max]; | |
1066 | for (Int_t mult = 0; mult < max; mult++) | |
1067 | xSection[mult] = xSections[i]->GetBinContent(mult+1); | |
1068 | ||
1069 | TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2; | |
1070 | ||
1071 | TGraph* graph = new TGraph; | |
1072 | ||
1073 | for (Int_t currentCut = 0; currentCut<nCuts; ++currentCut) | |
1074 | { | |
1075 | Int_t cut = cuts[currentCut]; | |
1076 | Double_t rate = rates[currentCut]; | |
1077 | //Double_t rate = rates[3]; | |
1078 | ||
1079 | // coll. in 100 ns window | |
1080 | //Double_t windowSize = 100e-9; | |
1081 | Double_t windowSize = 25e-9; | |
1082 | Double_t collPerWindow = windowSize * rate; | |
1083 | Printf("coll/window = %f", collPerWindow); | |
1084 | Double_t windowsPerSecond = 1.0 / windowSize; | |
1085 | ||
1086 | TH1* triggerEffHist = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff"); | |
1087 | Float_t* triggerEff = new Float_t[max]; | |
1088 | for (Int_t mult = 0; mult < max; mult++) | |
1089 | triggerEff[mult] = triggerEffHist->GetBinContent(mult+1); | |
1090 | ||
1091 | Double_t triggerRate = 0; | |
1092 | for (Int_t mult = 0; mult < max; mult++) | |
1093 | triggerRate += xSection[mult] * triggerEff[mult]; | |
1094 | ||
1095 | triggerRate *= TMath::Poisson(1, collPerWindow) * windowsPerSecond; | |
1096 | ||
1097 | Printf("Rate for 1 collision is %f Hz", triggerRate); | |
1098 | ||
1099 | Double_t triggerRate2 = 0; | |
1100 | for (Int_t mult = 0; mult < max; mult++) | |
1101 | for (Int_t mult2 = mult; mult2 < max; mult2++) | |
1102 | if (mult+mult2 < max) | |
1103 | triggerRate2 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * triggerEff[mult+mult2]; | |
1104 | ||
1105 | triggerRate2 *= TMath::Poisson(2, collPerWindow) * windowsPerSecond; | |
1106 | //triggerRate2 *= collPerWindow * rate; | |
1107 | ||
1108 | Printf("Rate for 2 collisions is %f Hz --> %.1f%%", triggerRate2, triggerRate2 / triggerRate * 100); | |
1109 | ||
1110 | Double_t triggerRate3 = 0; | |
1111 | for (Int_t mult = 0; mult < max; mult++) | |
1112 | for (Int_t mult2 = mult; mult2 < max-mult; mult2++) | |
1113 | for (Int_t mult3 = 0; mult3 < max-mult-mult2; mult3++) | |
1114 | //if (mult+mult2+mult3 < max) | |
1115 | triggerRate3 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * xSection[mult3] * triggerEff[mult+mult2+mult3]; | |
1116 | ||
1117 | triggerRate3 *= TMath::Poisson(3, collPerWindow) * windowsPerSecond; | |
1118 | //triggerRate3 *= collPerWindow * collPerWindow * rate; | |
1119 | ||
1120 | Printf("Rate for 3 collisions is %f Hz --> %.1f%%", triggerRate3, triggerRate3 / triggerRate * 100); | |
1121 | ||
1122 | Float_t totalContamination = (triggerRate2 + triggerRate3) / (triggerRate + triggerRate2 + triggerRate3); | |
1123 | ||
1124 | Printf("Total contamination is %.1f%%", totalContamination * 100); | |
1125 | ||
1126 | graph->SetPoint(graph->GetN(), cut, totalContamination); | |
1127 | ||
1128 | continue; | |
1129 | ||
1130 | Double_t triggerRate4 = 0; | |
1131 | for (Int_t mult = 0; mult < max; mult++) | |
1132 | for (Int_t mult2 = mult; mult2 < max-mult; mult2++) | |
1133 | for (Int_t mult3 = 0; mult3 < max-mult-mult2; mult3++) | |
1134 | for (Int_t mult4 = 0; mult4 < max-mult-mult2-mult3; mult4++) | |
1135 | //if (mult+mult2+mult3+mult4 < max) | |
1136 | triggerRate4 += ((mult2 > mult) ? 2. : 1.) * xSection[mult] * xSection[mult2] * xSection[mult3] * xSection[mult4] * triggerEff[mult+mult2+mult3+mult4]; | |
1137 | ||
1138 | //triggerRate4 *= collPerWindow * collPerWindow * collPerWindow * rate; | |
1139 | triggerRate4 *= TMath::Poisson(4, collPerWindow) * windowsPerSecond; | |
1140 | ||
1141 | Printf("Rate for 4 collisions is %f Hz --> %.1f%%", triggerRate4, triggerRate4 / triggerRate * 100); | |
1142 | ||
1143 | // general code for n collisions follows, however much slower... | |
1144 | /* | |
1145 | const Int_t maxdepth = 4; | |
1146 | for (Int_t depth = 1; depth <= maxdepth; depth++) { | |
1147 | Double_t triggerRate = 0; | |
1148 | ||
1149 | Int_t m[maxdepth]; | |
1150 | for (Int_t d=0; d<maxdepth; d++) | |
1151 | m[d] = 0; | |
1152 | ||
1153 | while (m[0] < max) { | |
1154 | Double_t value = 1; | |
1155 | Int_t sum = 0; | |
1156 | for (Int_t d=0; d<depth; d++) { | |
1157 | value *= xSection[m[d]]; | |
1158 | sum += m[d]; | |
1159 | } | |
1160 | ||
1161 | if (sum < max) { | |
1162 | value *= triggerEff[sum]; | |
1163 | triggerRate += value; | |
1164 | } | |
1165 | ||
1166 | Int_t increase = depth-1; | |
1167 | ++m[increase]; | |
1168 | while (m[increase] == max && increase > 0) { | |
1169 | m[increase] = 0; | |
1170 | --increase; | |
1171 | ++m[increase]; | |
1172 | } | |
1173 | } | |
1174 | ||
1175 | triggerRate *= rate * TMath::Power(collPerWindow, depth - 1); | |
1176 | ||
1177 | Printf("Rate for %d collisions is %f Hz", depth, triggerRate); | |
1178 | }*/ | |
1179 | } | |
1180 | ||
1181 | new TCanvas; graph->Draw("AP*"); | |
1182 | } | |
1183 | } | |
1184 | ||
9608df41 | 1185 | void AliHighMultiplicitySelector::DrawHistograms() |
1186 | { | |
a9aed06c | 1187 | // draws the histograms |
1188 | ||
9608df41 | 1189 | /* |
1190 | ||
1191 | gSystem->Load("libPWG0base"); | |
1192 | .L AliHighMultiplicitySelector.cxx+ | |
1193 | x = new AliHighMultiplicitySelector(); | |
1194 | x->ReadHistograms("highmult_pythia.root"); | |
1195 | x->DrawHistograms(); | |
1196 | ||
1197 | ||
1198 | gSystem->Load("libPWG0base"); | |
1199 | .L AliHighMultiplicitySelector.cxx+ | |
1200 | x = new AliHighMultiplicitySelector(); | |
1201 | x->ReadHistograms("highmult_hijing.root"); | |
1202 | x->DrawHistograms(); | |
1203 | ||
1204 | gSystem->Load("libPWG0base"); | |
1205 | .L AliHighMultiplicitySelector.cxx+ | |
1206 | x = new AliHighMultiplicitySelector(); | |
1207 | x->ReadHistograms("highmult_central.root"); | |
1208 | x->DrawHistograms(); | |
1209 | ||
1210 | gSystem->Load("libPWG0base"); | |
1211 | .L AliHighMultiplicitySelector.cxx+ | |
1212 | x = new AliHighMultiplicitySelector(); | |
1213 | x->ReadHistograms("highmult_hijing100k.root"); | |
1214 | x->DrawHistograms(); | |
1215 | ||
1216 | */ | |
1217 | ||
1218 | /*TCanvas* canvas = new TCanvas("chips", "chips", 600, 400); | |
1219 | ||
1220 | fChipsLayer2->SetLineColor(2); | |
1221 | fChipsLayer2->SetStats(kFALSE); | |
1222 | fChipsLayer1->SetStats(kFALSE); | |
1223 | fChipsLayer2->SetTitle(""); | |
1224 | fChipsLayer2->DrawCopy(); | |
1225 | fChipsLayer1->DrawCopy("SAME"); | |
1226 | canvas->SaveAs("chips.gif"); | |
1227 | ||
1228 | canvas = new TCanvas("L1vsL2", "L1vsL2", 600, 400); | |
1229 | fL1vsL2->SetStats(kFALSE); | |
1230 | fL1vsL2->DrawCopy("COLZ"); | |
1231 | gPad->SetLogz(); | |
1232 | canvas->SaveAs("L1vsL2.gif");*/ | |
1233 | ||
f6093269 | 1234 | TCanvas *canvas = new TCanvas("L1", "L1", 800, 600); |
1235 | canvas->SetTopMargin(0.05); | |
1236 | canvas->SetRightMargin(0.12); | |
9608df41 | 1237 | fMvsL1->SetStats(kFALSE); |
1238 | fMvsL1->DrawCopy("COLZ"); | |
1239 | gPad->SetLogz(); | |
1240 | ||
1241 | canvas->SaveAs("L1NoCurve.gif"); | |
f6093269 | 1242 | canvas->SaveAs("L1NoCurve.eps"); |
9608df41 | 1243 | |
1244 | // draw corresponding theoretical curve | |
1245 | TF1* func = new TF1("func", "[0]*(1-(1-1/[0])**x)", 1, 1000); | |
1246 | func->SetParameter(0, 400-5*2); | |
1247 | func->DrawCopy("SAME"); | |
1248 | ||
1249 | canvas->SaveAs("L1.gif"); | |
1250 | ||
1251 | canvas = new TCanvas("L2", "L2", 600, 400); | |
1252 | //fMvsL2->GetYaxis()->SetRangeUser(0, 150); | |
1253 | fMvsL2->SetStats(kFALSE); | |
1254 | fMvsL2->DrawCopy("COLZ"); | |
1255 | gPad->SetLogz(); | |
1256 | func->SetParameter(0, 800-5*4); | |
1257 | func->DrawCopy("SAME"); | |
1258 | canvas->SaveAs("L2.gif"); | |
1259 | ||
f6093269 | 1260 | // get x-sections |
1261 | TFile* file = TFile::Open("crosssectionEx.root"); | |
1262 | if (file) | |
1263 | { | |
1264 | TH1* xSection2 = dynamic_cast<TH1*> (gFile->Get("xSection2Ex")); | |
1265 | TH1* xSection15 = dynamic_cast<TH1*> (gFile->Get("xSection15Ex")); | |
1266 | ||
1267 | MakeGraphs2("Layer1", xSection2, fMvsL1); | |
1268 | return; | |
1269 | ||
1270 | // 5 times the mean | |
1271 | //MakeGraphs("Layer1", xSection2, fMvsL1, (Int_t) (xSection2->GetMean() * 5)); //75 * 2 * 2); | |
1272 | //MakeGraphs("Layer2", xSection15, fMvsL2, (Int_t) (xSection15->GetMean() * 5)); //(Int_t) (75 * 1.5 * 2)); | |
1273 | ||
1274 | MakeGraphs("Layer1", xSection2, fMvsL1, (Int_t) (xSection2->GetMean() * 8)); | |
1275 | MakeGraphs("Layer2", xSection15, fMvsL2, (Int_t) (xSection15->GetMean() * 8)); | |
1276 | MakeGraphs("Layer1", xSection2, fMvsL1, (Int_t) (xSection2->GetMean() * 9)); | |
1277 | MakeGraphs("Layer2", xSection15, fMvsL2, (Int_t) (xSection15->GetMean() * 9)); | |
1278 | MakeGraphs("Layer1", xSection2, fMvsL1, (Int_t) (xSection2->GetMean() * 10)); | |
1279 | MakeGraphs("Layer2", xSection15, fMvsL2, (Int_t) (xSection15->GetMean() * 10)); | |
1280 | ||
1281 | file->Close(); | |
1282 | } | |
1283 | ||
9608df41 | 1284 | // make spread hists |
1285 | TGraph* spread = new TGraph; | |
1286 | spread->SetTitle("Spread L1;true multiplicity;RMS"); | |
1287 | ||
1288 | for (Int_t i=1; i<=fMvsL1->GetNbinsX(); ++i) | |
1289 | { | |
1290 | TH1* proj = fMvsL1->ProjectionY("proj", i, i); | |
1291 | spread->SetPoint(spread->GetN(), i, proj->GetRMS()); | |
1292 | } | |
1293 | ||
1294 | canvas = new TCanvas("SpreadL1", "SpreadL1", 600, 400); | |
1295 | spread->Draw("A*"); | |
1296 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1297 | ||
1298 | TF1* log = new TF1("log", "[0]*log([1]*x)", 1, 150); | |
1299 | log->SetParLimits(0, 0, 10); | |
1300 | log->SetParLimits(1, 1e-5, 10); | |
1301 | ||
1302 | spread->Fit(log, "", "", 1, 150); | |
1303 | log->DrawCopy("SAME"); | |
1304 | ||
1305 | TGraph* spread2 = new TGraph; | |
1306 | spread2->SetTitle("Spread L2;true multiplicity;RMS"); | |
1307 | ||
1308 | for (Int_t i=1; i<=fMvsL1->GetNbinsX(); ++i) | |
1309 | { | |
1310 | TH1* proj = fMvsL2->ProjectionY("proj", i, i); | |
1311 | spread2->SetPoint(spread2->GetN(), i, proj->GetRMS()); | |
1312 | } | |
1313 | ||
1314 | canvas = new TCanvas("SpreadL2", "SpreadL2", 600, 400); | |
1315 | spread2->Draw("A*"); | |
1316 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1317 | ||
1318 | spread2->Fit(log, "", "", 1, 150); | |
1319 | log->DrawCopy("SAME"); | |
1320 | ||
9608df41 | 1321 | canvas = new TCanvas("Clusters_L1", "Clusters_L1", 600, 400); |
1322 | fClvsL1->SetStats(kFALSE); | |
1323 | fClvsL1->DrawCopy("COLZ"); | |
1324 | gPad->SetLogz(); | |
1325 | ||
1326 | func->SetParameter(0, 400-5*2); | |
1327 | func->DrawCopy("SAME"); | |
1328 | ||
1329 | canvas->SaveAs("Clusters_L1.gif"); | |
1330 | ||
1331 | canvas = new TCanvas("Clusters_L2", "Clusters_L2", 600, 400); | |
1332 | fClvsL2->SetStats(kFALSE); | |
1333 | fClvsL2->DrawCopy("COLZ"); | |
1334 | gPad->SetLogz(); | |
1335 | func->SetParameter(0, 800-5*4); | |
1336 | func->DrawCopy("SAME"); | |
1337 | canvas->SaveAs("Clusters_L2.gif"); | |
1338 | ||
1339 | canvas = new TCanvas("ChipsFired", "ChipsFired", 600, 400); | |
1340 | //fChipsFired->GetYaxis()->SetRangeUser(0, 150); | |
1341 | fChipsFired->SetStats(kFALSE); | |
1342 | fChipsFired->DrawCopy("COLZ"); | |
1343 | canvas->SaveAs("ChipsFired.gif"); | |
1344 | ||
1345 | /*TH1F* tresholdHistL1 = new TH1F("tresholdHistL1", ";chip treshold;<n>", BINNING_LAYER1); | |
1346 | TH1F* tresholdHistL2 = new TH1F("tresholdHistL2", ";chip treshold;<n>", BINNING_LAYER2); | |
1347 | ||
1348 | for (Int_t treshold = 0; treshold < 800; treshold++) | |
1349 | { | |
1350 | if (fPrimaryL1->Draw("multiplicity>>mult", Form("firedChips>%d", treshold), "goff") > 0) | |
1351 | { | |
1352 | TH1F* mult = dynamic_cast<TH1F*> (fPrimaryL1->GetHistogram()); | |
1353 | if (mult) | |
1354 | tresholdHistL1->Fill(treshold, mult->GetMean()); | |
1355 | } | |
1356 | if (fPrimaryL2->Draw("multiplicity>>mult", Form("firedChips>%d", treshold), "goff") > 0) | |
1357 | { | |
1358 | TH1F* mult = dynamic_cast<TH1F*> (fPrimaryL2->GetHistogram()); | |
1359 | if (mult) | |
1360 | tresholdHistL2->Fill(treshold, mult->GetMean()); | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | canvas = new TCanvas("TresholdL1", "TresholdL1", 600, 400); | |
1365 | tresholdHistL1->Draw(); | |
1366 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1367 | ||
1368 | canvas = new TCanvas("TresholdL2", "TresholdL2", 600, 400); | |
1369 | tresholdHistL2->Draw(); | |
1370 | canvas->SaveAs(Form("%s.gif", canvas->GetName()));*/ | |
1371 | ||
1372 | fPrimaryL1->Draw("(chipsByPrimaries/firedChips):multiplicity>>eff1", "", "prof goff"); | |
1373 | fPrimaryL2->Draw("(chipsByPrimaries/firedChips):multiplicity>>eff2", "", "prof goff"); | |
1374 | ||
1375 | canvas = new TCanvas("Efficiency", "Efficiency", 600, 400); | |
1376 | fPrimaryL1->GetHistogram()->SetStats(kFALSE); | |
1377 | fPrimaryL1->GetHistogram()->Draw(); | |
1378 | fPrimaryL2->GetHistogram()->SetLineColor(2); | |
1379 | fPrimaryL2->GetHistogram()->SetStats(kFALSE); | |
1380 | fPrimaryL2->GetHistogram()->Draw("SAME"); | |
1381 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1382 | ||
1383 | canvas = new TCanvas("ClustersZL1", "ClustersZL1", 600, 400); | |
1384 | fClusterZL1->Rebin(2); | |
1385 | fClusterZL1->Draw(); | |
1386 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1387 | ||
1388 | canvas = new TCanvas("ClustersZL2", "ClustersZL2", 600, 400); | |
1389 | fClusterZL2->Draw(); | |
1390 | fClusterZL2->Rebin(2); | |
1391 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1392 | } | |
a9aed06c | 1393 | |
1394 | TGraph* AliHighMultiplicitySelector::IntFractRate() | |
1395 | { | |
1396 | // A plot which shows the fractional rate above any threshold | |
1397 | // as function of threshold (i.e. the integral of dSigma/dN as function of | |
1398 | // N, normalised to 1 for N=0) | |
1399 | ||
1400 | /* | |
d1594f8a | 1401 | gSystem->Load("libANALYSIS"); |
a9aed06c | 1402 | gSystem->Load("libPWG0base"); |
1403 | .L AliHighMultiplicitySelector.cxx+ | |
1404 | x = new AliHighMultiplicitySelector(); | |
1405 | x->ReadHistograms("highmult_hijing100k.root"); | |
1406 | x->IntFractRate(); | |
1407 | */ | |
1408 | ||
1409 | // get x-sections | |
1410 | TFile* file = TFile::Open("crosssectionEx.root"); | |
1411 | if (!file) | |
1412 | return 0; | |
1413 | ||
1414 | TH1* xSection; | |
1415 | xSection = dynamic_cast<TH1*> (gFile->Get("xSection2Ex")); | |
1416 | ||
1417 | TGraph* result = new TGraph; | |
1418 | ||
1419 | for (Int_t threshold = 0; threshold < 300; threshold += 2) | |
1420 | { | |
1421 | TH1* proj = GetXSectionCut(xSection, fMvsL1, threshold); | |
1422 | ||
1423 | //new TCanvas; proj->DrawCopy(); | |
1424 | ||
1425 | Double_t integral = proj->Integral(); | |
1426 | ||
d1594f8a | 1427 | Printf("Cut at %d, integral is %e", threshold, integral); |
a9aed06c | 1428 | |
1429 | result->SetPoint(result->GetN(), threshold, integral); | |
1430 | } | |
1431 | ||
1432 | TCanvas* canvas = new TCanvas("IntFractRate", "IntFractRate", 600, 400); | |
1433 | gPad->SetLogy(); | |
1434 | ||
1435 | result->Draw("A*"); | |
1436 | result->GetXaxis()->SetTitle("threshold"); | |
1437 | result->GetYaxis()->SetTitle("integrated fractional rate above threshold"); | |
1438 | ||
1439 | canvas->SaveAs(Form("%s.gif", canvas->GetName())); | |
1440 | ||
1441 | return result; | |
1442 | } | |
d1594f8a | 1443 | |
1444 | void AliHighMultiplicitySelector::MBComparison() | |
1445 | { | |
1446 | // | |
1447 | // finds the threshold from which onwards the number of found events above N times the mean | |
1448 | // is higher using a high mult. trigger than just triggering with MB | |
1449 | // | |
1450 | ||
1451 | /* | |
1452 | ||
1453 | gSystem->Load("libANALYSIS"); | |
1454 | gSystem->Load("libPWG0base"); | |
1455 | .L AliHighMultiplicitySelector.cxx+g | |
1456 | x = new AliHighMultiplicitySelector(); | |
1457 | x->ReadHistograms("highmult_hijing100k.root"); | |
1458 | x->MBComparison(); | |
1459 | ||
1460 | */ | |
1461 | ||
1462 | // get x-sections | |
1463 | TFile* file = TFile::Open("crosssectionEx.root"); | |
1464 | if (!file) | |
1465 | return; | |
1466 | ||
1467 | TH1* xSections[2]; | |
1468 | xSections[0] = dynamic_cast<TH1*> (gFile->Get("xSection2Ex")); | |
1469 | xSections[1] = dynamic_cast<TH1*> (gFile->Get("xSection15Ex")); | |
1470 | ||
1471 | // rate = L * sigma | |
1472 | // sigma ~ 80 mb (Pythia 14 TeV) | |
1473 | // 10^28 lum --> 8e2 Hz | |
1474 | // 10^31 lum --> 8e5 Hz | |
1475 | Int_t nRates = 4; | |
1476 | Double_t rates[] = { 8e2, 8e3, 8e4, 8e5 }; | |
1477 | ||
1478 | // threshold in number of fired chips for corresponding rate | |
1479 | //Int_t cuts[] = { 104, 134, 154, 170 }; // values for 20 Hz | |
1480 | Int_t cuts[] = { 82, 124, 147, 164 }; // values for 50 Hz | |
1481 | ||
1482 | // bandwidth, fractions (for MB, high mult.) | |
1483 | Float_t bandwidth = 1e3; | |
1484 | Float_t fractionMB = 0.5; | |
1485 | Float_t fractionHM = 0.05; | |
1486 | ||
1487 | // different limits to define "interesting events" | |
1488 | Int_t nLimits = 9; | |
1489 | Int_t limits[] = { 0, 1, 2, 4, 6, 7, 8, 9, 10 }; | |
1490 | ||
1491 | // put to 2 for second layer | |
1492 | for (Int_t i=0; i<1; ++i) | |
1493 | { | |
1494 | if (!xSections[i]) | |
1495 | continue; | |
1496 | ||
1497 | TH1* xSection = xSections[i]; | |
1498 | TH2* fMvsL = (i == 0) ? fMvsL1: fMvsL2; | |
1499 | ||
1500 | // relative x-section, once we have a collision | |
1501 | xSection->Scale(1.0 / xSection->Integral()); | |
1502 | ||
1503 | xSection->SetStats(kFALSE); | |
1504 | xSection->SetTitle(""); //(i == 0) ? "SPD Layer 1" : "SPD Layer 2"); | |
1505 | xSection->GetXaxis()->SetTitle(Form("true multiplicity in |#eta| < %.1f", (i == 0) ? 2.0 : 1.5)); | |
1506 | xSection->GetXaxis()->SetRangeUser(0, (i == 0) ? 450 : 350); | |
1507 | xSection->GetYaxis()->SetTitleOffset(1.2); | |
1508 | ||
1509 | TCanvas* canvas = new TCanvas("MBComparison", "MBComparison", 1000, 800); | |
1510 | canvas->Divide(3, 3); | |
1511 | ||
1512 | for (Int_t currentLimit = 0; currentLimit<nLimits; currentLimit++) | |
1513 | { | |
1514 | // limit is N times the mean | |
1515 | Int_t limit = (Int_t) (xSection->GetMean() * limits[currentLimit]); | |
1516 | if (limit < 1) | |
1517 | limit = 1; | |
1518 | ||
1519 | TGraph* graphMB = new TGraph; | |
1520 | graphMB->SetTitle(Form("Events with %d times above <n> (i.e. n >= %d)", limits[currentLimit], limit)); | |
1521 | graphMB->SetMarkerStyle(20); | |
1522 | ||
1523 | TGraph* graphBoth = new TGraph; | |
1524 | graphBoth->SetMarkerStyle(21); | |
1525 | ||
1526 | Float_t min = bandwidth; | |
1527 | Float_t max = 0; | |
1528 | ||
1529 | for (Int_t current = 0; current<nRates; ++current) | |
1530 | { | |
1531 | Float_t rate = rates[current]; | |
1532 | Int_t cut = cuts[current]; | |
1533 | ||
1534 | TH1* triggerEff = (TH1*) GetTriggerEfficiency(fMvsL, cut)->Clone("triggerEff"); | |
1535 | TH1* proj = GetXSectionCut(xSection, fMvsL, cut); | |
1536 | ||
1537 | Float_t downScaleMB1 = rate / bandwidth; | |
1538 | if (downScaleMB1 < 1) | |
1539 | downScaleMB1 = 1; | |
1540 | ||
1541 | Float_t downScaleMB2 = rate / (bandwidth * fractionMB); | |
1542 | if (downScaleMB2 < 1) | |
1543 | downScaleMB2 = 1; | |
1544 | ||
1545 | Float_t downScaleHM = rate * proj->Integral(1, xSection->GetNbinsX()) / (bandwidth * fractionHM); | |
1546 | if (downScaleHM < 1) | |
1547 | downScaleHM = 1; | |
1548 | ||
1549 | Float_t rateMB1 = rate / downScaleMB1 * xSection->Integral(limit, xSection->GetNbinsX()); | |
1550 | Float_t rateMB2 = rate / downScaleMB2 * xSection->Integral(limit, xSection->GetNbinsX()); | |
1551 | Float_t rateHM = rate / downScaleHM * proj->Integral(limit, xSection->GetNbinsX()); | |
1552 | Float_t combinedRate = rateMB2 + rateHM; | |
1553 | ||
1554 | graphMB->SetPoint(graphMB->GetN(), rate, rateMB1); | |
1555 | graphBoth->SetPoint(graphBoth->GetN(), rate, combinedRate); | |
1556 | ||
1557 | min = TMath::Min(min, TMath::Min(rateMB1, combinedRate)); | |
1558 | max = TMath::Max(min, TMath::Max(rateMB1, combinedRate)); | |
1559 | ||
1560 | Printf("The rates for events with %d times above <n> (i.e. n >= %d) at a rate of %.2e Hz is:", limits[currentLimit], limit, rate); | |
1561 | Printf(" %.2e Hz in MB-only mode", rateMB1); | |
1562 | Printf(" %.2e Hz = %.2e Hz + %.2e Hz in MB + high mult. mode", combinedRate, rateMB2, rateHM); | |
1563 | ||
1564 | Printf(" The downscale factors are: %.2f %.2f %.2f", downScaleMB1, downScaleMB2, downScaleHM); | |
1565 | ||
1566 | Int_t triggerLimit = 0; | |
1567 | for (Int_t bin = 1; bin <= triggerEff->GetNbinsX(); bin++) | |
1568 | if (triggerEff->GetBinContent(bin) < 0.5) | |
1569 | triggerLimit = (Int_t) triggerEff->GetXaxis()->GetBinCenter(bin); | |
1570 | ||
1571 | Printf(" Efficiency limit (50%%) is at multiplicity %d", triggerLimit); | |
1572 | ||
1573 | if (triggerLimit > limit) | |
1574 | Printf(" WARNING: interesting events also counted inside the trigger limit"); | |
1575 | ||
1576 | Printf(""); | |
1577 | } | |
1578 | ||
1579 | canvas->cd(currentLimit+1)->SetLogx(); | |
1580 | canvas->cd(currentLimit+1)->SetLogy(); | |
1581 | ||
1582 | graphMB->Draw("AP"); | |
1583 | graphBoth->Draw("P SAME"); | |
1584 | ||
1585 | graphMB->GetYaxis()->SetRangeUser(0.5 * min, 2 * max); | |
1586 | graphMB->GetXaxis()->SetTitle("Raw rate in Hz"); | |
1587 | graphMB->GetYaxis()->SetTitle("Event rate in Hz"); | |
1588 | } | |
1589 | } | |
1590 | } |