Korean Helium Cooled Ceramic Reflector (HCCR) Test Blanket Module (TBM) will be installed at the #18 equatorial port of the Vaccum Vessel in order to test the feasibility of the breeding blanket performance for forthcoming fusion power plant in the ITER TBM Program.
Severe discrepancies do exist for the spectral neutron flux distribution that would transmit into significant uncertainties of the calculated neutron spectra and of the nuclear blanket performance in blanket design calculations.
The main design objective is to obtain efficient blanket performance by limiting the structural material temperature to <550 °C, the Pb Li to FMS interface temperatures within the corrosion limit of <480 °C, ceramic breeder temperatures window between 450 and 920 °C for tritium extraction and to prevent sintering of ceramic pebbles.
Redundant experimental techniques have been used to measure the resulting tritium production rate and the neutron and gamma ray spectra which are needed to predict the blanket shielding performance, nuclear power production and all nuclear loads.
In addition, it is important that the reduction in the Be quantity does not diminish the blanket's performance in key aspects such as the tritium breeding ratio (TBR), energy multiplication and peak nuclear heating.
The performance of the blanket is mainly determined by the internal structural arrangement and material composition.
The shielding performance of the blanket has been investigated at the inboard torus mid-plane regarding the radiation load to the super-conducting toroidal field coil.
The one-dimensional neutronic transport calculation using the discrete ordinate method and burnup calculation using the direct numerical method are carried out to assess the performance of the blanket.
In order to evaluate the effects of the guide tube installation on the structural performance of the blanket, as a preliminary stage, thermal-hydraulic analysis of first wall was carried out based on the heat load obtained from 3D modeled neutronics calculations.
The performances of the blanket mainly depend on the internal structural arrangement and material composition.
