Neutron Spectrum Measurement of China Experimental Fast Reactor

Neutron spectrum is an important parameter of reactor. Neutron spectrum determines the performance of proliferation and transmutation of fast reactor. China Experimental Fast Reactor (CEFR) is the first sodium-cooled fast reactor in China, and the neutron spectrum of CEFR must be determined. Irradiation experiments were carried at two positions in CEFR by activation method. The neutron spectrum in CEFR was obtained by NSA program. The results show that the experiment results accord with calculation basically.