5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P2.120 Calculations on plasma radiation heat distribution on the first walls of the K-DEMO reactor

6 Sep 2016, 14:20
1h 40m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 120
Poster F. Plasma Facing Components P2 Poster session

Speaker

Kihak Im (DEMO Technology Division)

Description

A pre-conceptual design study for the Korean fusion demonstration tokamak reactor (K-DEMO) has been initiated in 2012. K-DEMO is characterized by the uniqueness of high magnetic field (BT0 = 7.4 T), major and minor radii of 6.8 m and 2.1 m, and steady-state operation. The heat load distribution by plasma radiation onto the first walls of the in-vessel components is one of the basic inputs for the various analyses including the structural and thermohydraulic analyses for further study on the K-DEMO in-vessel components. The methodology and results of calculation on the radiation heat load are presented in this paper. The KDEMO_HEATLOAD code was developed for the calculation in a 3-D toroidal space. The plasma region is divided into 100 and 15 segments in poloidal and radial directions, respectively, to play the role of each radiation source of the core plasma. The contributions from individual radiation sources to the segmented first walls, 50 and 32 segments for the divertor and the blanket first walls, respectively, are collectively calculated considering the 3-D toroidal geometry. The K-DEMO reference power scheme with the plasma heating power of 560 MW is used for the calculation. With the radiation power ratios of ~40% and ~90% for the core and divertor plasmas, respectively, the maximum radiation heat loads on the blanket and divertor first walls were ~0.5 MW/m22 and ~1.2 MW/m22, respectively.

Co-authors

Jong Sung Park (DEMO Technology Division, National Fusion Research Institute, Daejeon, South Korea) Kihak Im (DEMO Technology Division, National Fusion Research Institute, Daejeon, South Korea) Sungjin Kwon (DEMO Technology Division, National Fusion Research Institute, Daejeon, South Korea)

Presentation Materials

There are no materials yet.