Muon radiation fields at the UNK neutrino channel

The results on calculating muon fields along the UNK neutrino channel are presented. Basic recombination for shields against muon radiation have been formulated. It is shown that the earth bank of 10 m in thick is necessary to provide radiation protection of a neutrino channel over a tunnel of decay base. Acceptable muon background in a neutrino beam with a wide spectrum can be provided by combinated protection steel (>or approx. 250 m+bank (∼1200m)), active protection (magnetic toroids) and the presence of air interval (∼600 m) between the end of muon protection and a a neutrino detector. It is possible to use a steel absorber (∼ 550m) or uranium one (∼ 140 m) for experiments on a direct neutrino beam and a neutrino beam with a narrow energy spectrum, where maximum acceptnace of a monitoring facility is necessary. 9 refs.; 11 figs