The initial implementation will be trivial: simply supporting a constant field in a named detector volume. In principle we should read a full field map from an external file of some kind.
FHICL values so far
- "UseField" a integer. When 0 we don't even instantiate a Magnetic field object. Describes the description to use.
- "Constant Field" a vector< double > which should have three elements and is interpreted in Tesla
- "MagnetizedVolume" names the G4logical volume to which the field should be attached
1.8.11
