[1L01-08] Liquid Metal Engineering in Fusion Reactor

[1L02] Composition and performance evaluation of functional liquid metals for breeding blanket in FFHR-b3

*Makoto Kobayashi^1,2, Junichi Miyazawa^1,2, Takuya Goto^1,2, Yukinori Hamaji^1,2 (1. National Institute for Fusion Science, 2. SOKENDAI)

Keywords:Neutron, blanket, liquid metal

In the recent design of the helical demonstration reactor FFHR-b3, an application of the cartridge-type blanket is proposed for easier maintenance. In this design, the liquid metals are stored in a pool structure in the bottom of the vacuum vessel. Therefore, the liquid metal materials have the criteria of low vapor pressure as well as sufficient tritium breeding efficiency, low density, and low melting point. For these aspects, the candidate composition and performance of liquid metals were evaluated in this study.