Design of a magnetized iron muon shield for a high energy neutrino laboratory

Several new ideas are adduced to the problem of designing muon shielding for a neutrino experimental facility operated at high energy, a problem of interest for the National Accelerator Laboratory (NAL) and CERN-II. The authors outline a practical calculating procedure which permits the evaluation of the effect of magnetized- iron-lens geometries on the intensity distribution of muons at the detector location. Such relevant effects as range straggling and multiple scattering within and around the lens are included in the evaluation. A specific design is outlined which would increase the maximum energy of bubble chamber beams in the NAL neutrino area from 350 to about 500 GeV. (12 refs).