Export magnetic field to root file

Newbie
,
1

Hello experts,
I have a magnetic fieldmap loaded using
TGeoGlobalMagField
How can I export it into a root file?
Thank you in advance!

2

TGeoGlobalMagField *MagF = new TGeoGlobalMagField();
MagF->SaveAs(“TheRootFile.root”);

This should work.
If you already have a root file, just use:

MagF->Write();

After opening the file with:

TFile *f = TFile::Open(“ThisFile.root”,“UPDATE”);

Cheers,
Emil

3

Thanks a lot!