ADS(accelerator driven subcritical system)is composed of a linear accelerator,a spallation target and a reactor.The Strategic Priority Research Program of the Chinese Academy of Sciences propose a new concept target,the gravity-driven dense granular-flow target(DGT),which combines the advantages of solid target and liquid target and has a compact structure and the potential of high power operation.In 2016,the experimental measurement and related device technology verification were completed(Fig.1).The optimization design of the components of the spalling target heat exchanger is completed,and the optimal design report of the key components of the fluidized solid particles is presented.
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