Plan and progress of the fusion neutron sources development at KAERI for fusion and fission applications

•Based on the National Fusion Energy Program in Korea, volumetric and compact fusion neutron sources have been developed.•For developing the C-FNS, plasma generator based on RF ion source including RF driver and generator was developed.•Target has been developed and tested with the high heat flux test facility (KoHLT-EB) before assemblying for investigating its integrity.•So far, the C-FNS is successfully developed, and the preparation of the on-site C-FNS and further V-FNS design in detail is in progress.