Compatibility study between density conditions for core and divertor in fusion reactor

2014 Fiscal Year Final Research Report

• Project/Area Number: 25889068
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: TOKUNAGA Shinsuke 独立行政法人日本原子力研究開発機構, 核融合研究開発部門 六ヶ所核融合研究所, 任期付職員 (90704990)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 核融合

Outline of Final Research Achievements

Compatibility between fusion-power-output in core plasma domain and power-handling capability in divertor gives a critical outline of economically rational fusion reactor design. The fusion output is proportional to the square of fuel density in core region, while the sufficient plasma density in divertor region is crucial condition for sustainment of detached-divertor plasma. The global density profile consistent to the both conditions to be achieved and maintained throughout operation is the target of this study.
By the use of a lightweight and reactor design oriented 1.5D integrated transport code ATLAS, hundreds of parameter scan calculations had been carried out. It was found that it is possible to robustly control the fusion output, against to considerable range of uncertainty of particle pinch velocity, with the constraint of SOL-edge density consequenced from the divertor condition, by controlling tritium ratio via pellet fueling.

Free Research Field

核融合