Return To: Session FTP1 - Technology Developments
Prev Page: (FTP1/22) Operating Windows of Pebble Divertor
Next Page: (FTP1/24) Experimental and Design Activity on Liquid Lithium

(FTP1/23) Development of a Large-scale Monoblock Divertor Mock-up for Fusion Experimental Reactors in JAERI

M. Akiba, S. Suzuki, K. Sato, K. Ezato, M. Taniguchi
 
Japan Atomic Energy Research Institute, Ibaraki-ken, Japan

Abstract.  In a design of fusion experimental reactors, the divertor is required to withstand a steady-state heat load range of 5-10 MW/m², and a transient heat load of up to 20 MW/m². JAERI has developed a high thermal conductivity carbon fiber composites (CFCs), reduced activation brazing techniques, and three layer high strength copper tubes. Based on these technologies, a 1 m long divertor mock-up, which is relevant to a reactor-scale divertor plate, has been fabricated. The mock-up has 30 CFC armors, whose dimension is 30 mm long, 30 mm wide, and 60 mm high. The center of the armor is drilled and directly brazed to the cooling tube, so-called the monoblock type. After heating tests with an intense ion beam, it has been successfully demonstrated that the mock-up withstands a heat load of 5 MW/m², 30s for 3000 cycles, and a heat load of 20 MW/m², 10s for 1000 cycles without failure.

Read the full paper in PDF format.