 |
Figure 1: Continuous flow of liquid lithium and transport of lithium in plasma
Figure 2: Flowing liquid lithium improves high-constrained-mode plasma performance
Recently, Hu Jiansheng, a researcher at the Tokamak Physics Research Institute of the Institute of Plasma Physics of the Chinese Academy of Sciences' Institute of Plasma Physics, made new progress in the research on the first wall of flowing liquid lithium. Related papers First results of the use of a clear flowing lithium The limiter in high performance discharges in the EAST device was published on Nuclear Fusion, the top journal in the field of nuclear fusion.
For the future fusion reactors, the development of anti-neutron irradiation, liquid lithium first wall with self-renewal ability is increasingly valued. For the first time, the superconducting tokamak (EAST) experiment adopts a structure driven by a built-in electromagnetic pump to drive the liquid lithium from the collecting box to the distribution box, and then flows back from the limiting surface to the collecting box under the action of gravity to realize the circulation of liquid lithium. use. Experiments have shown that flowing liquid lithium can have good compatibility with highly constrained plasmas and can further reduce hydrogen isotope recycling and impurity levels on the basis of lithiated walls; ionization, transport, and accumulation of lithium at the plasma boundary. Effective shielding of plasma particles and heat flow can be achieved. The study confirms for the first time the "feasibility of using a liquid lithium stream that can be continuously used for several hours in a fusion device." It also confirms that the liquid lithium first wall can not only avoid the solid first wall. Impurity radiation, limited life, and other problems, and can improve the plasma confinement to a certain extent. This circulating liquid lithium structure can provide a fresh and clean first wall environment for the long pulse plasma discharge of the fusion device.
The first successful liquid lithium limiter experiment on the EAST device was the first exploration of flowing liquid lithium as a surface wall material technology on a large-scale fusion device. It has attracted the attention of international counterparts and is expected to provide new designs for the first wall in fusion reactors in the future. s Choice.
The above research results have been funded by the National Natural Science Foundation of China and the Ministry of Science and Technology.
Fixed Support,Steel Support,Solar Panel Support,Ground Solar Mounting Support
Fuzhou Mei Li Cheng Imp&Exp Co., Ltd , https://www.mlc-solar.com