42 ShipBellField(
const char* name, Double_t Bpeak, Double_t Zmiddle,Int_t
fOrient=1, Double_t Btube=500. );
56 virtual Double_t
GetBx(Double_t x, Double_t y, Double_t z);
57 virtual Double_t
GetBy(Double_t x, Double_t y, Double_t z);
58 virtual Double_t
GetBz(Double_t x, Double_t y, Double_t z);