Nuclear Techniques ›› 2020, Vol. 43 ›› Issue (1): 10601-010601.doi: 10.11889/j.0253-3219.2020.hjs.43.010601

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Study on the effect of poloidal segmentation of breeder blanket of CFETR on the electromagnetic load distribution

Kun PEI1,2,Mingxuan LU1   

  1. 1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
    2. Hefei Kejugao Technology Co.,Ltd. ,Hefei 230031,China
  • Received:2019-05-19 Revised:2019-11-05 Online:2020-01-15 Published:2020-01-21
  • About author:PEI Kun, male, born in 1983, graduated from Anhui Agriculture University with a master's degree in 2013, focusing on fusion reactor blanket electromagnetic-structure analyses
  • Supported by:
    National Key R&D Program of China(2017YFE0300604)

Abstract: Background

The multi module segment (MMS) proposal was adopt for the design of the breeder blanket for the China Fusion Engineering Test Reactor (CFETR) reactors. The breeder blanket system is divided into 16 toroidal sectors of 22.5° with the inboard (IB) and outboard (OB) blanket modules maintained together with the back plate support. When a plasma major disruption or vertical displacement event occurs, a large electromagnetic (EM) loads generated on the breeder blanket will applied to the back plate system.

Purpose

The aim is to study the influence of the poloidal segmentation of breeder blanket of CFETR on the electromagnetic load distribution.

Methods

The finite element models with different poloidal segmentations were developed in ANSYS code to simulate a plasma large break with 36 ms exponential current quenching. The eddy current, Lorentz forces and moments on U-shaped casing of Helium Cooled Ceramic Breeder (HCCB) were calculated by transient analysis. Furthermore, the effect of EM loads on the back plate poloidal segmentations was studied.

Results & Conclusions

The results show that when the EM forces and moments of the inboard blanket barely changed little, the outboard blanket changed greatly. With the number of poloidal segmentations increases, the total EM forces load on the back plate will decrease. Those results may provide important data support for the subsequent optimization of the back plate of CFETR.

Key words: CFETR, Helium cooled ceramic breeder, Plasma major disruption, EM force and moment

CLC Number: 

  • TL99