The RCNP (n,p) facility

A facility for studying (n,p) reactions at neutron kinetic energies of 140≲Tn≲300MeV has been constructed by using the existing Large Acceptance Spectrometer at the Research Center for Nuclear Physics, Osaka University. A neutron beam produced by the 7Li(p,n) reaction hits the (n,p) targets located in a segmented target system, which allows one to use a relatively thick target in total (∼0.5g/cm2) with a moderate energy resolution of ∼1MeV. The facility enables one to obtain spectra at 300 MeV up to an excitation energy of 70 MeV with a single setting of the spectrometer. This (n,p) facility has a large effective solid angle of 11 msr for an effective target size of 30W×20Hmm2.