1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 // The trigger parametrization is computed for background levels 0., 0.5 and 1.
18 // In order to set a background level different from 0 it is necessary to
19 // explicitly force it with:
20 // ForceBkgLevel(BkgLevel).
21 // For intermediate background levels, the trigger response is linearly
22 // interpolated between these values.
23 // There is increased granularity in the pT region below 3 GeV. Although
24 // it does not seem to be necessary it is also possible to interpolate
25 // between pT bins using SetInt().
28 #include "AliFastMuonTriggerEff.h"
33 #include "TObjString.h"
35 #define PLIN printf("%s: %d: ",__FILE__,__LINE__)
37 ClassImp(AliFastMuonTriggerEff)
39 AliFastMuonTriggerEff::AliFastMuonTriggerEff():
40 AliFastResponse("Efficiency", "Muon Trigger Efficiency"),
70 // Default constructor
74 AliFastMuonTriggerEff::AliFastMuonTriggerEff(const char* Name, const char* Title):
75 AliFastResponse(Name, Title),
104 // Another constructor
107 AliFastMuonTriggerEff::AliFastMuonTriggerEff(const AliFastMuonTriggerEff& eff)
108 :AliFastResponse(eff),
141 void AliFastMuonTriggerEff::SetCut(Int_t cut)
146 printf("Selecting Low Pt cut\n");
147 }else if(cut==kHigh){
148 printf("Selecting High Pt cut\n");
150 printf("Selecting Lowest Pt cut\n");
152 printf("Don't know cut %d! Selecting Low Pt cut\n",cut);
159 Int_t AliFastMuonTriggerEff::SetBkgLevel(Float_t Bkg)
162 // Set the background level
165 printf("%s: Warning: requested Bkg: %f\n",
168 printf("A consistent treatement of the trigger probability\n");
169 printf("within the framework of the fast simulation requires\n");
170 printf("requires background 0\n");
171 printf("%s: fBkg: set to %f\n",
182 Int_t AliFastMuonTriggerEff::ForceBkgLevel(Float_t Bkg)
185 // Check and enforce consistency of the background level
188 printf("%s: Warning: requested Bkg: %f\n",
190 printf("A consistent treatement of the trigger probability\n");
191 printf("within the framework of the fast simulation\n");
192 printf("requires background 0");
193 printf("%s: Continue with fBkg: %f\n",
203 Int_t AliFastMuonTriggerEff::LoadTables(Char_t *namet=""){
205 // Load the trigger tables
207 Char_t hNameA[100],hNameL[100],hNameH[100];
208 sprintf(hNameA,"hEffAPt%s",namet);
209 sprintf(hNameL,"hEffLPt%s",namet);
210 sprintf(hNameH,"hEffHPt%s",namet);
211 fhEffAPt = (TH3F*)gDirectory->Get(hNameA);
212 fhEffLPt = (TH3F*)gDirectory->Get(hNameL);
213 fhEffHPt = (TH3F*)gDirectory->Get(hNameH);
215 PLIN; printf("%s: histogram %s not found\n",__FILE__,hNameA);
219 PLIN; printf("%s: histogram %s not found\n",__FILE__,hNameL);
223 PLIN; printf("%s: histogram %s not found\n",__FILE__,hNameH);
229 void AliFastMuonTriggerEff::Init()
235 Char_t file[100]="$(ALICE_ROOT)/FASTSIM/data/MUONtriggerLUT_V2.4nvdn.root";
236 printf("Initializing %s / %s\n", fName.Data(), fTitle.Data());
237 printf("using data from file: %s\n",file);
238 printf("AliFastMuonTriggerEff: Initialization with background level: %f\n",fBkg);
239 TFile *f = new TFile(file);
241 PLIN; printf("Cannot open file: %s\n",file);
247 if(TMath::Abs(fBkg)<0.00001){
249 }else if(TMath::Abs(fBkg-0.5)<0.00001){
251 }else if(TMath::Abs(fBkg-1.0)<0.00001){
254 PLIN; printf("A table for Bkg level: %f does not exists\n",fBkg);
257 if(intb){ // Interpolation between background levels
258 PLIN; printf("Interpolating Bkg level: %f\n",fBkg);
259 TH3F* ha1,*hl1,*hh1,*ha2,*hl2,*hh2,*ha0,*hl0,*hh0;
260 Char_t name1[10],name2[10]; Float_t b1,b2;
261 if(fBkg>0&&fBkg<0.5){
272 for(Int_t i=0; i<10;i++){
273 PLIN; printf("WARNING!!!! You are extrapolating above background 1.0\n");
277 PLIN; printf("Bkg level: %f is not supported\n",fBkg);
280 if(LoadTables(name1)){
281 PLIN; printf("Error in loading trigger tables\n");
284 PLIN; printf("We use tables for %f and %f to interpolate %f Bkg level\n",b1,b2,fBkg);
285 ha0=(TH3F*)fhEffAPt->Clone("hEffAPtXX"); ha0->Reset();
286 hl0=(TH3F*)fhEffLPt->Clone("hEffLPtXX"); hl0->Reset();
287 hh0=(TH3F*)fhEffHPt->Clone("hEffHPtXX"); hh0->Reset();
291 if(LoadTables(name2)){
292 PLIN; printf("Error in loading trigger tables\n");
301 Int_t nnx=ha0->GetNbinsX()+1;
302 Int_t nny=ha0->GetNbinsY()+1;
303 Int_t nnz=ha0->GetNbinsZ()+1;
304 for(Int_t ix=0; ix<=nnx; ix++){
305 for(Int_t iy=0; iy<=nny; iy++){
306 for(Int_t iz=0; iz<=nnz; iz++){
307 Double_t y1,y2; Float_t cont;
308 y1=ha1->GetBinContent(ix,iy,iz); y2=ha2->GetBinContent(ix,iy,iz);
309 cont=Float_t(y1+(y2-y1)/(b2-b1)*(fBkg-b1)); if(cont>1)cont=1; if(cont<0)cont=0;
310 fhEffAPt->SetBinContent(ix,iy,iz,cont);
311 y1=hl1->GetBinContent(ix,iy,iz); y2=hl2->GetBinContent(ix,iy,iz);
312 cont=Float_t(y1+(y2-y1)/(b2-b1)*(fBkg-b1)); if(cont>1)cont=1; if(cont<0)cont=0;
313 fhEffLPt->SetBinContent(ix,iy,iz,cont);
314 y1=hh1->GetBinContent(ix,iy,iz); y2=hh2->GetBinContent(ix,iy,iz);
315 cont=Float_t(y1+(y2-y1)/(b2-b1)*(fBkg-b1)); if(cont>1)cont=1; if(cont<0)cont=0;
316 fhEffHPt->SetBinContent(ix,iy,iz,cont);
320 }else{ // Use tables computed for selected backgound levels
321 printf("Loading tables for background level: %f\n",fBkg);
322 if(LoadTables(namet)){
323 PLIN; printf("Error in loading trigger tables\n");
327 fhEffAPt->SetDirectory(0);
328 fhEffLPt->SetDirectory(0);
329 fhEffHPt->SetDirectory(0);
330 fhLX=fhEffLPt->GetXaxis();
331 fhLY=fhEffLPt->GetYaxis();
332 fhLZ=fhEffLPt->GetZaxis();
335 if(f->Get("Description"))
337 fDescription=((TObjString*)f->Get("Description"))->GetString();
338 printf("%s\n",fDescription.Data());
341 fThetaMin = fhEffLPt->GetXaxis()->GetXmin();
342 fThetaMax = fhEffLPt->GetXaxis()->GetXmax();
343 fnthetab=fhEffLPt->GetNbinsX();
344 fDtheta = (fThetaMax-fThetaMin)/fnthetab;
346 fPhiMin = fhEffLPt->GetYaxis()->GetXmin();
347 fPhiMax = fhEffLPt->GetYaxis()->GetXmax();
348 fnphib=fhEffLPt->GetNbinsY();
349 fDphi = (fPhiMax-fPhiMin)/fnphib;
351 fPtMin=fhEffLPt->GetZaxis()->GetXmin();
352 fPtMax=fhEffLPt->GetZaxis()->GetXmax();
353 fnptb=fhEffLPt->GetNbinsZ();
354 fDpt = (fPtMax-fPtMin)/fnptb;
356 printf("%4d bins in theta [%f:%f]\n",fnthetab,fThetaMin,fThetaMax);
357 printf("%4d bins in phi [%f:%f]\n",fnphib,fPhiMin,fPhiMax);
358 printf("%4d bins in pt [%f:%f]\n",fnptb,fPtMin,fPtMax);
360 fZones=fnthetab*fnphib;
364 printf("Interpolation of trigger efficiencies is off!\n");
366 printf("Interpolation of trigger efficiencies is on!\n");
370 void AliFastMuonTriggerEff::Evaluate(Float_t charge, Float_t pt,Float_t theta,
371 Float_t phi, Float_t& effLow, Float_t& effHigh, Float_t& effAny)
374 // Trigger efficiency for pt, theta, phi (low, high and "any" cut)
377 printf("Evaluate(ch=%2.0f, pt=%10.6f, theta=%7.2f, phi=%8.2f ...)\n",charge,pt,theta,phi);
383 printf("Call to uninitialized object of class: AliFastMuonTriggerEff\n");
387 printf("Warning: pt: %f < 0. GeV/c\n",pt);
391 Int_t iPt = fhLZ->FindBin((Double_t)pt);
392 if(iPt>fnptb)iPt=fnptb;
393 Int_t iPhi = Int_t((phi-fPhiMin)/fDphi);
394 if(phi<fPhiMin)iPhi=iPhi-1;
395 Int_t iTheta = fhLX->FindBin((Double_t)theta);
397 printf("Evaluate(ch=%2.0f, pt=%10.6f, theta=%7.2f, phi=%8.2f ...)\n",charge,pt,theta,phi);
398 printf(" 0:%1d iPt iTheta iPhi: %d %d %d\n",fInt,iPt,iTheta,iPhi);
400 iPhi=iPhi-2*fnphib*(iPhi/(2*fnphib));
402 printf(" 1:%1d iPhi converted to: %d for angle equivalence\n",fInt,iPhi);
404 if(iPhi<0)iPhi=-iPhi-1;
405 if(iPhi>(fnphib-1))iPhi=2*fnphib-1-iPhi;
407 printf(" 2:%1d iPhi converted to: %d for the symmetry of the spectrometer\n",fInt,iPhi);
410 } else if(charge==-1.) {
413 printf(" 3:%1d iPhi converted to: %d for the charge symmetry\n",fInt,iPhi);
416 printf("Warning: not understand charge: %f\n",charge);
419 if(iTheta<=0||iTheta>fnthetab) {
420 printf("Warning: theta: %f outside acceptance\n",theta);
424 printf("Warning: what do you mean with pt: %f <0?\n",pt);
429 printf(" 4:%1d Getting: iTheta, iPhi, iPt: %d %d %d\n",
430 fInt,iTheta,iPhi,iPt);
432 effLow =fhEffLPt->GetBinContent(iTheta,iPhi,iPt);
433 effHigh=fhEffHPt->GetBinContent(iTheta,iPhi,iPt);
434 effAny =fhEffAPt->GetBinContent(iTheta,iPhi,iPt);
436 printf(" 4:%1d Result: charge, iTheta, iPhi, iPt: %f %d %d %d effLow: %f, effHigh: %f, effAny: %f\n",
437 fInt,charge,iTheta,iPhi,iPt,effLow,effHigh,effAny);
441 Float_t angl,angh,anga;
442 Float_t effLowp,effHighp,effAnyp;
443 Float_t ptc=(iPt+0.5)*fDpt; // The center of current bin
445 printf(" 5:1 The center of current bin iPt: %d is: %f\n",iPt,ptc);
449 printf(" 6:1 No more points above! No interpolation is needed!\n");
454 printf(" 6:1 No interpolation is needed!\n");
458 // Looking for previous point
460 effLowp =fhEffLPt->GetBinContent(iTheta,iPhi,iPt-1);
461 effHighp=fhEffHPt->GetBinContent(iTheta,iPhi,iPt-1);
462 effAnyp =fhEffAPt->GetBinContent(iTheta,iPhi,iPt-1);
464 printf(" 7:1 A simple look to previous point: %d: %f %f\n",iPt-1,effLowp,effHighp);
471 printf(" 8:1 result is: %f %f %f\n",effLowp,effHighp,effAnyp);
474 angl=(effLow-effLowp)/fDpt;
475 angh=(effHigh-effHighp)/fDpt;
476 anga=(effAny-effAnyp)/fDpt;
478 // Looking for next point
480 effLowp =fhEffLPt->GetBinContent(iTheta,iPhi,iPt+1);
481 effHighp=fhEffHPt->GetBinContent(iTheta,iPhi,iPt+1);
482 effAnyp =fhEffAPt->GetBinContent(iTheta,iPhi,iPt+1);
484 printf(" 7:1 A simple look to next point: %d: %f %f %f\n",iPt-1,effLowp,effHighp,effAnyp);
491 printf(" 8:1 result is: pt: %f %f %f\n",effLowp,effHighp,effAnyp);
494 angl=(effLowp-effLow)/fDpt;
495 angh=(effHighp-effHigh)/fDpt;
496 anga=(effAnyp-effAny)/fDpt;
498 effLow=effLow+angl*(pt-ptc);
499 effHigh=effHigh+angh*(pt-ptc);
500 effAny=effAny+anga*(pt-ptc);
502 printf(" 9:1 the interpolation coefficients are: %f %f %f\n",angl,angh,anga);
506 printf("10:%1d effLow, effHigh=%f %f %f\n",fInt,effLow,effHigh,effAny);
513 Float_t AliFastMuonTriggerEff::Evaluate(Float_t charge, Float_t pt,
514 Float_t theta, Float_t phi)
517 // Trigger efficiency for pt, theta, phi depending of fCut
520 printf("Call to uninitialized object of class: AliFastMuonTriggerEff\n");
524 Float_t effLow, effHigh, effAny;
526 Evaluate(charge,pt,theta,phi,effLow,effHigh,effAny);
529 else if (fCut == kHigh)
531 else if (fCut == kAny)
539 AliFastMuonTriggerEff& AliFastMuonTriggerEff::operator=(const AliFastMuonTriggerEff& rhs)
541 // Assignment operator