**************************************************************************/
/* $Id$ */
-
-#include <Riostream.h>
-
-#include <TDirectory.h>
-
-#include "AliRunLoader.h"
-#include <AliESD.h>
+/*********************************************************************
+ * T0 reconstruction and filling ESD
+ * - reconstruct mean time (interation time)
+ * - vertex position
+ * - multiplicity
+ ********************************************************************/
+
+#include <AliESDEvent.h>
#include "AliLog.h"
-#include "AliT0Loader.h"
#include "AliT0RecPoint.h"
#include "AliRawReader.h"
#include "AliT0RawReader.h"
#include "AliT0Reconstructor.h"
#include "AliT0Parameters.h"
#include "AliT0Calibrator.h"
-#include "AliCDBLocal.h"
-#include "AliCDBStorage.h"
-#include "AliCDBManager.h"
-#include "AliCDBEntry.h"
#include <TArrayI.h>
#include <TGraph.h>
-//#include <TGeoManager.h>
-//#include <TClonesArray.h>
-//#include <TString.h>
-//#include <TGeoPNEntry.h>
-//#include <TGeoPhysicalNode.h>
-//#include <TGeoHMatrix.h>
+#include <TMath.h>
+#include <Riostream.h>
ClassImp(AliT0Reconstructor)
AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
- fZposition(0)
-
+ fdZonA(0),
+ fdZonC(0),
+ fZposition(0),
+ fParam(NULL),
+ fAmpLEDrec(),
+ fQTC(0),
+ fAmpLED(0),
+ fCalib()
{
- AliDebug(1,"Start reconstructor ");
-
+ //constructor
+
fParam = AliT0Parameters::Instance();
fParam->Init();
+
for (Int_t i=0; i<24; i++){
- TGraph* gr = fParam ->GetAmpLEDRec(i);
- fAmpLEDrec.AddAtAndExpand(gr,i) ;
- fTime0vertex[i]= fParam->GetTimeDelayDA(i);
+ TGraph* gr = fParam ->GetAmpLEDRec(i);
+ if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
+ TGraph* gr1 = fParam ->GetAmpLED(i);
+ if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
+ TGraph* gr2 = fParam ->GetQTC(i);
+ if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
}
- fdZ_C = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
- fdZ_A = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
-
-}
-//____________________________________________________________________
-AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
- fZposition(0)
-{
- //
- // AliT0Reconstructor copy constructor
- //
+ fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
+ fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
- ((AliT0Reconstructor &) r).Copy(*this);
+ fCalib = new AliT0Calibrator();
}
//_____________________________________________________________________________
-AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
-{
- //
- // Assignment operator
- //
-
- if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
- return *this;
-
-}
-
-//_____________________________________________________________________________
-
void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
{
// T0 digits reconstruction
- // T0RecPoint writing
+ Int_t refAmp = GetRecoParam()->GetRefAmp();
-
TArrayI * timeCFD = new TArrayI(24);
TArrayI * timeLED = new TArrayI(24);
TArrayI * chargeQT0 = new TArrayI(24);
TArrayI * chargeQT1 = new TArrayI(24);
- AliT0Calibrator *calib=new AliT0Calibrator();
+
+ Float_t channelWidth = fParam->GetChannelWidth() ;
+ Float_t meanVertex = fParam->GetMeanVertex();
+ Float_t c = 0.0299792; // cm/ps
+ Float_t vertex = 9999999;
+ Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
- // Int_t mV2Mip = param->GetmV2Mip();
- //mV2Mip = param->GetmV2Mip();
- Int_t channelWidth = fParam->GetChannelWidth() ;
- Int_t meanT0 = fParam->GetMeanT0();
AliDebug(1,Form("Start DIGITS reconstruction "));
+
TBranch *brDigits=digitsTree->GetBranch("T0");
AliT0digit *fDigits = new AliT0digit() ;
if (brDigits) {
brDigits->SetAddress(&fDigits);
}else{
- cerr<<"EXEC Branch T0 digits not found"<<endl;
- return;
+ AliError(Form("EXEC Branch T0 digits not found"));
+ return;
}
digitsTree->GetEvent(0);
fDigits->GetTimeLED(*timeLED);
fDigits->GetQT0(*chargeQT0);
fDigits->GetQT1(*chargeQT1);
+ Int_t onlineMean = fDigits->MeanTime();
+ Int_t ref = fDigits->RefPoint();
+
Float_t besttimeA=999999;
Float_t besttimeC=999999;
Int_t pmtBestA=99999;
Int_t pmtBestC=99999;
- Float_t timeDiff=999999, meanTime=0;
-
-
AliT0RecPoint* frecpoints= new AliT0RecPoint ();
clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
Float_t time[24], adc[24];
for (Int_t ipmt=0; ipmt<24; ipmt++) {
if(timeCFD->At(ipmt)>0 ){
- Double_t qt0 = Double_t(chargeQT0->At(ipmt));
- Double_t qt1 = Double_t(chargeQT1->At(ipmt));
- if((qt1-qt0)>0) adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
- time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD->At(ipmt) ) ;
+ if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
+ adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
+ else
+ adc[ipmt] = 0;
+
+ time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD->At(ipmt)) ;
+
+ Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
+ // time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
+ AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
+ ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
+
+ Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
+ Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
+ AliDebug(10,Form(" Amlitude in MIPS LED %f , QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
+
+ frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
+ frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
+ frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
- //LED
- Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
- Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
- frecpoints->SetTime(ipmt,time[ipmt]);
- frecpoints->SetAmp(ipmt,adc[ipmt]);
- frecpoints->SetAmpLED(ipmt,qt);
}
else {
time[ipmt] = 0;
}
if(besttimeA !=999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
- AliDebug(1,Form(" besttimeA %f ps, besttimeC %f ps",besttimeA, besttimeC));
- Float_t c = 0.0299792; // cm/ps
- Float_t vertex = 0;
- if(besttimeA !=999999 && besttimeC != 999999 ){
- timeDiff =(besttimeC - besttimeA)*channelWidth;
- meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
- vertex = c*(timeDiff)/2. + (fdZ_A - fdZ_C)/2; //-(lenr-lenl))/2;
- AliDebug(1,Form(" timeDiff %f ps, meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
+ AliDebug(10,Form(" besttimeA %f ch, besttimeC %f ch",besttimeA, besttimeC));
+ if(besttimeA !=999999 && besttimeC != 999999 ){
+ // timeDiff = (besttimeC - besttimeA)*channelWidth;
+ timeDiff = (besttimeA - besttimeC)*channelWidth;
+ meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth);
+ timeclock = Float_t(meanTime - ref);
+ vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
+ }
frecpoints->SetVertex(vertex);
- frecpoints->SetMeanTime(Int_t(meanTime));
+ frecpoints->SetMeanTime(meanTime);
+ frecpoints->SetT0clock(timeclock);
+ //online mean
+ frecpoints->SetOnlineMean(Int_t(onlineMean));
+ AliDebug(10,Form(" timeDiff %i #channel, meanTime %i #channel, vertex %f cm online mean %i timeclock %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean), timeclock));
- }
- //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
- for (Int_t ipmt=0; ipmt<24; ipmt++) {
- if(time[ipmt]>1) {
- time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
- frecpoints->SetTime(ipmt,time[ipmt]);
- }
- }
+ // }
+
clustersTree->Fill();
delete timeCFD;
void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
{
// T0 raw ->
- // T0RecPoint writing
-
- //Q->T-> coefficients !!!! should be measured!!!
- Int_t allData[110][5];
-
- TArrayI * timeCFD = new TArrayI(24);
- TArrayI * timeLED = new TArrayI(24);
- TArrayI * chargeQT0 = new TArrayI(24);
- TArrayI * chargeQT1 = new TArrayI(24);
-
- for (Int_t i=0; i<110; i++) {
- allData[i][0]=0;
- }
-
- AliT0RawReader myrawreader(rawReader);
- if (!myrawreader.Next())
- AliDebug(1,Form(" no raw data found!! %i", myrawreader.Next()));
- for (Int_t i=0; i<110; i++) {
- allData[i][0]=myrawreader.GetData(i,0);
- }
- AliT0Calibrator *calib = new AliT0Calibrator();
+ //
+ // reference amplitude and time ref. point from reco param
- // Int_t mV2Mip = param->GetmV2Mip();
- //mV2Mip = param->GetmV2Mip();
- Int_t channelWidth = fParam->GetChannelWidth() ;
- Int_t meanT0 = fParam->GetMeanT0();
-
- for (Int_t in=0; in<24; in++)
- {
- timeLED->AddAt(allData[in+1][0],in);
- timeCFD->AddAt(allData[in+25][0],in);
- chargeQT1->AddAt(allData[in+57][0],in);
- chargeQT0->AddAt(allData[in+80][0],in);
- AliDebug(10, Form(" readed Raw %i %i %i %i %i", in, timeLED->At(in),timeCFD->At(in),chargeQT0->At(in),chargeQT1->At(in)));
- }
+ Int_t refAmp = GetRecoParam()->GetRefAmp();
+ Int_t refPoint = GetRecoParam()->GetRefPoint();
- Float_t besttimeA=999999;
- Float_t besttimeC=999999;
+ Int_t allData[110][5];
+
+ Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
+ Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
+ Float_t c = 0.0299792458; // cm/ps
+ Float_t vertex = 9999999;
+ Int_t onlineMean=0;
+ for (Int_t i0=0; i0<105; i0++)
+ {
+ for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
+ }
+
+ Float_t besttimeA=9999999;
+ Float_t besttimeC=9999999;
Int_t pmtBestA=99999;
Int_t pmtBestC=99999;
- Float_t timeDiff=999999, meanTime=0;
-
-
+ Float_t meanVertex = fParam->GetMeanVertex();
+
AliT0RecPoint* frecpoints= new AliT0RecPoint ();
-
- recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
-
- Float_t time[24], adc[24];
- for (Int_t ipmt=0; ipmt<24; ipmt++) {
- if(timeCFD->At(ipmt)>0 ){
- Double_t qt0 = Double_t(chargeQT0->At(ipmt));
- Double_t qt1 = Double_t(chargeQT1->At(ipmt));
- if((qt1-qt0)>0) adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
- // time[ipmt] = channelWidth * (calib-> WalkCorrection( ipmt,qt1 , timeCFD->At(ipmt) ) ) ;
- time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD->At(ipmt) ) ;
- Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
- Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
- frecpoints->SetTime(ipmt,time[ipmt]);
- frecpoints->SetAmp(ipmt,adc[ipmt]);
- frecpoints->SetAmpLED(ipmt,qt);
- }
- else {
- time[ipmt] = 0;
- adc[ipmt] = 0;
- }
- }
-
- for (Int_t ipmt=0; ipmt<12; ipmt++){
- if(time[ipmt] > 1 ) {
- if(time[ipmt]<besttimeC){
- besttimeC=time[ipmt]; //timeC
- pmtBestC=ipmt;
+ recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
+
+ AliDebug(10," before read data ");
+ AliT0RawReader myrawreader(rawReader);
+
+ UInt_t type =rawReader->GetType();
+
+ if (!myrawreader.Next())
+ AliDebug(1,Form(" no raw data found!!"));
+ else
+ {
+ if(type == 7) { //only physics
+ for (Int_t i=0; i<105; i++) {
+ for (Int_t iHit=0; iHit<5; iHit++)
+ {
+ allData[i][iHit] = myrawreader.GetData(i,iHit);
+ }
}
- }
- }
- for ( Int_t ipmt=12; ipmt<24; ipmt++){
- if(time[ipmt] > 1) {
- if(time[ipmt]<besttimeA) {
- besttimeA=time[ipmt]; //timeA
- pmtBestA=ipmt;}
- }
- }
- if(besttimeA !=999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
- if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
- AliDebug(1,Form(" besttimeA %f ps, besttimeC %f ps",besttimeA, besttimeC));
- Float_t c = 0.0299792; // cm/ps
- Float_t vertex = 0;
- if(besttimeA !=999999 && besttimeC != 999999 ){
- timeDiff = (besttimeC - besttimeA)*channelWidth;
- // meanTime = (besttimeA + besttimeC)/2.;
- meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
- vertex = c*(timeDiff)/2. + (fdZ_A - fdZ_C)/2; //-(lenr-lenl))/2;
- AliDebug(1,Form(" timeDiff %f ps, meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
- frecpoints->SetVertex(vertex);
- frecpoints->SetMeanTime(Int_t(meanTime));
- }
- //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
- for (Int_t ipmt=0; ipmt<24; ipmt++) {
- if(time[ipmt]>1) {
- time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
- frecpoints->SetTime(ipmt,time[ipmt]);
- }
- }
- recTree->Fill();
-
-
- delete timeCFD;
- delete timeLED;
- delete chargeQT0;
- delete chargeQT1;
-
+ Int_t ref = allData[refPoint][0]-5000.;
+ Float_t channelWidth = fParam->GetChannelWidth() ;
+
+ // Int_t meanT0 = fParam->GetMeanT0();
+
+
+ for (Int_t in=0; in<12; in++)
+ {
+ timeCFD[in] = allData[in+1][0] ;
+ timeCFD[in+12] = allData[in+56+1][0] ;
+ timeLED[in] = allData[in+12+1][0] ;
+ timeLED[in+12] = allData[in+68+1][0] ;
+ AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
+ in, timeCFD[in],timeCFD[in+12],timeLED[in],
+ timeLED[in+12]));
+ }
+
+ for (Int_t in=0; in<12; in++)
+ {
+ chargeQT0[in]=allData[2*in+25][0];
+ chargeQT1[in]=allData[2*in+26][0];
+ }
+
+ for (Int_t in=12; in<24; in++)
+ {
+ chargeQT0[in]=allData[2*in+57][0];
+ chargeQT1[in]=allData[2*in+58][0];
+ }
+
+ // } //cosmic with physics event
+ for (Int_t in=0; in<24; in++)
+ AliDebug(10, Form(" readed Raw %i %i %i %i %i",
+ in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
+ onlineMean = allData[49][0];
+
+ Float_t time[24], adc[24];
+ for (Int_t ipmt=0; ipmt<24; ipmt++) {
+ if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
+ //for simulated data
+ //for physics data
+ if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
+ adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
+ else
+ adc[ipmt] = 0;
+
+
+ // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
+
+ Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
+ time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
+ AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
+ ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
+ Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
+ Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
+ AliDebug(10,Form(" Amlitude in MIPS LED %f ; QTC %f; in channels %i\n ",ampMip,qtMip, adc[ipmt]));
+
+ frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
+ frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
+ frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
+
+ }
+ else {
+ time[ipmt] = 0;
+ adc[ipmt] = 0;
+ }
+ }
+
+ for (Int_t ipmt=0; ipmt<12; ipmt++){
+ if(time[ipmt] > 1 ) {
+ if(time[ipmt]<besttimeC){
+ besttimeC=time[ipmt]; //timeC
+ pmtBestC=ipmt;
+ }
+ }
+ }
+ for ( Int_t ipmt=12; ipmt<24; ipmt++){
+ if(time[ipmt] > 1) {
+ if(time[ipmt]<besttimeA) {
+ besttimeA=time[ipmt]; //timeA
+ pmtBestA=ipmt;}
+ }
+ }
+ if(besttimeA !=9999999) frecpoints->SetTimeBestA(Int_t(besttimeA));
+ if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
+ AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f #channel",
+ pmtBestA,besttimeA, pmtBestC, besttimeC));
+ if(besttimeA <9999999 && besttimeC < 9999999 ){
+ timeDiff = ( besttimeA - besttimeC) *channelWidth;
+ meanTime = Float_t((besttimeA + besttimeC)/2.);
+ timeclock = Float_t(meanTime - ref);
+ vertex = meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
+ }
+ } //if phys event
+ frecpoints->SetT0clock(timeclock);
+ frecpoints->SetVertex(vertex);
+ frecpoints->SetMeanTime(Int_t(meanTime));
+ frecpoints->SetOnlineMean(Int_t(onlineMean));
+ AliDebug(5,Form(" timeDiff %f #channel, meanTime %f #channel, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
+
+
+ } // if (else )raw data
+ recTree->Fill();
+ if(frecpoints) delete frecpoints;
}
+
+
//____________________________________________________________
-void AliT0Reconstructor::FillESD(AliRunLoader* runLoader, AliESD *pESD) const
+void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
{
/***************************************************
Resonstruct digits to vertex position
****************************************************/
-
- if (!runLoader) {
- AliError("Reconstruct >> No run loader");
- return;
- }
-
AliDebug(1,Form("Start FillESD T0"));
- AliT0Loader* pStartLoader = (AliT0Loader*) runLoader->GetLoader("T0Loader");
-
- pStartLoader->LoadRecPoints("READ");
-
- TTree *treeR = pStartLoader->TreeR();
+ TTree *treeR = clustersTree;
AliT0RecPoint* frecpoints= new AliT0RecPoint ();
if (!frecpoints) {
if (brRec) {
brRec->SetAddress(&frecpoints);
}else{
- cerr<<"EXEC Branch T0 rec not found"<<endl;
- // exit(111);
+ AliError(Form("EXEC Branch T0 rec not found"));
return;
}
brRec->GetEntry(0);
- Float_t timeStart, Zposition, amp[24], time[24];
- Int_t i;
- Zposition = frecpoints -> GetVertex();
- timeStart = frecpoints -> GetMeanTime() ;
- for ( i=0; i<24; i++) {
+ Float_t amp[24], time[24];
+ Float_t zPosition = frecpoints -> GetVertex();
+ Float_t timeStart = frecpoints -> GetMeanTime() ;
+ Float_t timeClock = frecpoints -> GetT0clock() ;
+ for ( Int_t i=0; i<24; i++) {
time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
amp[i] = frecpoints -> GetAmp(i);
}
- pESD->SetT0zVertex(Zposition); //vertex Z position
+ pESD->SetT0zVertex(zPosition); //vertex Z position
pESD->SetT0(timeStart); // interaction time
+ pESD->SetT0clock(timeClock); // interaction time with ref.point(spectrum)
pESD->SetT0time(time); // best TOF on each PMT
pESD->SetT0amplitude(amp); // number of particles(MIPs) on each PMT
- AliDebug(1,Form(" Z position %f cm, T0 %f ps",Zposition , timeStart));
+ AliDebug(1,Form(" Z position %f cm, T0 %f ps",zPosition , timeStart));
- pStartLoader->UnloadRecPoints();
-
} // vertex in 3 sigma
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff