virtual Int_t Locate(Double_t *xv, Int_t n, Double_t xval
, Int_t &kl, Double_t &dx);
virtual Double_t Omega(Float_t rho, Float_t z, Float_t a) { return (28.8 * TMath::Sqrt(rho * z / a)); };
- virtual Int_t SelectNFoils(Float_t p);
+ virtual Int_t SelectNFoils(Float_t p) const;
void SetFoilThick(Float_t t) { fFoilThick = t;
SetSigma(); };