Speakers
Description
Neutron sources are the important experimental platform for the R&D of advanced nuclear energy systems, especially for the development for fusion systems. Series High Intensity D-T Steady Neutron Sources (HINEG) have been developed in China for different missions including neutronics design validation, materials & components irradiation test, nuclear waste burning and nuclear technology applications, etc. HINEG includes three phases: HINEG-I, HINEG-II and HINEG-III.
HINEG-II is a new D-T neutron source based on a high-voltage electrostatic accelerator, which is constructed in Chongqing and achieves an excellent neutron yield of 1.3×10¹³ n/s. Its outstanding performance is supported by three key core technologies: high-efficiency beam transport technology, which ensures stable extraction and transmission of high-current deuterium beams; a large, ultra-high-speed rotating target that can stably operate at 5000 rpm, combined with dynamic disturbance-enhanced heat dissipation technology to solve the problem of ultra-high heat flux density; and gradient nano crystallization epitaxial growth technology with a T/Ti ratio of 1.9, which improves tritium storage capacity and reaction efficiency. The device provides multi-type neutron spectra, including fusion-like ones, serving as a crucial experimental platform for fusion-related technical verifications, radiation damage mechanism research, and advanced reactor technology validation. Series experiments have been successfully completed on HINEG, including neutronics performance test of TBM blanket, measurement of leakage spectra from Pb and Pb-Bi, irradiation damage testing for laser crystal, etc.
Besides, the FDS Consortium has also developed a series of neutron sources for various uses, such as the Mini Neutron Generator (MINEG), Small Neutron Generator (SNEG), Compact Neutron Source (CONEG) and Volumetric Neutron Source (VNEG). Among them, SNEG is a D-D/D-T neutron source featuring with high neutron yield, compact design, and mobility. Its main body occupies an area of less than 1 m2, with a D-D source strength of 10¹⁰ n/s and a D-T source strength of 10¹² n/s. Due to its small size and portability, the SNEG neutron source is highly suitable for on-site calibration of detectors. VNEG is a Gas-dynamic Trap (GDT) based volumetric fusion neutron source with a neutron flux higher than 10¹⁵ n·cm⁻²·s⁻¹, it is an optimal platform for research on tritium breeding blankets of fusion reactors and material irradiation testing.
FDS provides an open platform that invites global research and applications in neutron source and fusion technology.
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