Effects of lithium burn-up on TBR in DEMO reactor SlimCS

Sato, Satoshi; Nishitani, Takeo; Konno, Chikara  

Lithium in a breeding blanket is burned up through neutron nuclear reactions in fusion DEMO reactors. For the SlimCS blanket design, the TBRs have been calculated taking into account the lithium burn-ups by one dimensional Sn radiation transport calculation code ANISN. Although the maximum value of the Li burn-up amounts to 79% after 10-years continuous operation, the total TBR in the blanket decrease to around 96% of the initial value. It is expected that the reduction of the TBR due to the lithium burn-up is not so large.