}
//_____________________________________________________________________________
-Bool_t AliReconstruction::SetFieldMap(Float_t l3Cur, Float_t diCur, Float_t l3Pol,
- Float_t diPol, Int_t convention, Bool_t uniform,
- Float_t beamenergy, const Char_t *beamtype, const Char_t *path)
-{
- //------------------------------------------------
- // The magnetic field map, defined externally...
- // L3 current 30000 A -> 0.5 T
- // L3 current 12000 A -> 0.2 T
- // dipole current 6000 A
- // The polarities must match the convention (LHC or DCS2008)
- // unless the special uniform map was used for MC
- //------------------------------------------------
- const Float_t l3NominalCurrent1=30000.; // (A)
- const Float_t l3NominalCurrent2=12000.; // (A)
- const Float_t diNominalCurrent =6000. ; // (A)
-
- const Float_t tolerance=0.03; // relative current tolerance
- const Float_t zero=77.; // "zero" current (A)
- //
- AliMagF::BMap_t map;
- double sclL3,sclDip;
- //
- l3Cur = TMath::Abs(l3Cur);
- diCur = TMath::Abs(diCur);
- //
- if (TMath::Abs((sclDip=diCur/diNominalCurrent)-1.) > tolerance && !uniform) {
- if (diCur <= zero) sclDip = 0.; // some small current.. -> Dipole OFF
- else {
- AliError(Form("Wrong dipole current (%f A)!",diCur));
- return kFALSE;
- }
- }
- //
- if (uniform) {
- // special treatment of special MC with uniform mag field (normalized to 0.5 T)
- // no check for scaling/polarities are done
- map = AliMagF::k5kGUniform;
- sclL3 = l3Cur/l3NominalCurrent1;
- }
- else {
- if (TMath::Abs((sclL3=l3Cur/l3NominalCurrent1)-1.) < tolerance) map = AliMagF::k5kG;
- else if (TMath::Abs((sclL3=l3Cur/l3NominalCurrent2)-1.) < tolerance) map = AliMagF::k2kG;
- else if (l3Cur <= zero) { sclL3 = 0; map = AliMagF::k5kGUniform;}
- else {
- AliError(Form("Wrong L3 current (%f A)!",l3Cur));
- return kFALSE;
- }
- }
- //
- if (sclDip!=0 && (map==AliMagF::k5kG || map==AliMagF::k2kG) &&
- ((convention==AliMagF::kConvLHC && l3Pol!=diPol) ||
- (convention==AliMagF::kConvDCS2008 && l3Pol==diPol)) ) {
- AliError(Form("Wrong combination for L3/Dipole polarities (%c/%c) in %s convention",
- l3Pol>0?'+':'-',diPol>0?'+':'-',convention==AliMagF::kConvDCS2008?"DCS2008":"LHC"));
- return kFALSE;
- }
- //
- if (l3Pol<0) sclL3 = -sclL3;
- if (diPol<0) sclDip = -sclDip;
- //
- AliMagF::BeamType_t btype = AliMagF::kNoBeamField;
- TString btypestr = beamtype;
- btypestr.ToLower();
- TPRegexp protonBeam("(proton|p)\\s*-?\\s*\\1");
- TPRegexp ionBeam("(lead|pb|ion|a)\\s*-?\\s*\\1");
- if (btypestr.Contains(ionBeam)) btype = AliMagF::kBeamTypeAA;
- else if (btypestr.Contains(protonBeam)) btype = AliMagF::kBeamTypepp;
- else AliInfo(Form("Assume no LHC magnet field for the beam type %s, ",beamtype));
- //
- char ttl[80];
- sprintf(ttl,"L3: %+5d Dip: %+4d kA; %s | Polarities in %s convention",(int)TMath::Sign(l3Cur,float(sclL3)),
- (int)TMath::Sign(diCur,float(sclDip)),uniform ? " Constant":"",
- convention==AliMagF::kConvLHC ? "LHC":"DCS2008");
- // LHC and DCS08 conventions have opposite dipole polarities
- if ( AliMagF::GetPolarityConvention() != convention) sclDip = -sclDip;
- //
- AliMagF* fld = new AliMagF("MagneticFieldMap", ttl, 2, sclL3, sclDip, 10., map, path,
- btype,beamenergy);
- TGeoGlobalMagField::Instance()->SetField( fld );
- TGeoGlobalMagField::Instance()->Lock();
- //
- return kTRUE;
-}
-
Bool_t AliReconstruction::InitGRP() {
//------------------------------------
// Initialization of the GRP entry
Bool_t uniformB = fGRPData->IsUniformBMap();
if (ok) {
- if ( !SetFieldMap(l3Current, diCurrent, l3Polarity ? -1:1, diPolarity ? -1:1,
- polConvention,uniformB,beamEnergy, beamType.Data()))
- AliFatal("Failed to creat a B field map ! Exiting...");
- AliInfo("Running with the B field constructed out of GRP !");
+ AliMagF* fld = AliMagF::CreateFieldMap(TMath::Abs(l3Current) * (l3Polarity ? -1:1),
+ TMath::Abs(diCurrent) * (diPolarity ? -1:1),
+ polConvention,uniformB,beamEnergy, beamType.Data());
+ if (fld) {
+ TGeoGlobalMagField::Instance()->SetField( fld );
+ TGeoGlobalMagField::Instance()->Lock();
+ AliInfo("Running with the B field constructed out of GRP !");
+ }
+ else AliFatal("Failed to create a B field map !");
}
else AliFatal("B field is neither set nor constructed from GRP ! Exitig...");
}
// Set magnetic field from the tracker
fesd->SetMagneticField(AliTracker::GetBz());
fhltesd->SetMagneticField(AliTracker::GetBz());
-
+ //
+ AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
+ if (fld) { // set info needed for field initialization
+ fesd->SetCurrentL3(fld->GetCurrentSol());
+ fesd->SetCurrentDip(fld->GetCurrentDip());
+ fesd->SetBeamEnergy(fld->GetBeamEnergy());
+ fesd->SetBeamType(fld->GetBeamTypeText());
+ fesd->SetUniformBMap(fld->IsUniform());
+ fesd->SetBInfoStored();
+ //
+ fhltesd->SetCurrentL3(fld->GetCurrentSol());
+ fhltesd->SetCurrentDip(fld->GetCurrentDip());
+ fhltesd->SetBeamEnergy(fld->GetBeamEnergy());
+ fhltesd->SetBeamType(fld->GetBeamTypeText());
+ fhltesd->SetUniformBMap(fld->IsUniform());
+ fhltesd->SetBInfoStored();
+ }
+ //
// Set most probable pt, for B=0 tracking
// Get the global reco-params. They are atposition 16 inside the array of detectors in fRecoParam
const AliGRPRecoParam *grpRecoParam = dynamic_cast<const AliGRPRecoParam*>(fRecoParam.GetDetRecoParam(kNDetectors));
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff