Field test of wide-range environmental neutron dosemeter using PADC

the cyclotron facility of National Institute of Radiological Sciences (NIRS) in Japan.G The neutron ambient dose equivalent was measured using the dosemeter and a rem counter. The neutron energy spectrum and the ambient dose equivalent in this neutron field were also evaluated by the measurement of the multi-moderator spectrometer, so-called Bonner ball, inserting gold activation foil.