| The future D-T fusion reaction used in fusion reactors will generate high flux 14.1 Me V neutrons,which may cause serious damage to the materials in the reactor.The resistance to neutron irradiation of fusion reactor materials requires a special neutron source for testing.Based on this,Hua Zhong University of Science and Technology has proposed a neutron source scheme based on field reversed configuration(FRC)plasma magnetic compression.It is hoped that the temperature and density of the plasma will be greatly increased by magnetic compression to achieve the conditions of fusion reaction to generate neutron.The project is currently designing and constructing a magnetic compression field reversed configuration plasma device(HUST Field Reversed Configuration,HFRC).In order to conduct physical research and engineering verification related to FRC magnetic compression,at the same time explore instability control methods.In this paper,the main part of the device used to generate the target plasma before magnetic compression is designed,and the compression vacuum chamber,coil and supporting parts during 0.5 T magnetic compression are designed.Based on this,several possible vacuum chamber schemes under high field magnetic compression are analyzed.In this paper,the host of the device based on collision merging FRC plasma is designed first.Several possible rotational instability control measures are proposed,including boundary bias,plasma injection,and rotating magnetic field.The paper also uses COMSOL software to design the magnetic field configuration of the whole process of device plasma formation,collision merging,and magnetic compression.Then,the compression magnetic field configuration of the HFRC device is designed,and the compression coil and its lead-out structure are designed in conjunction with the device’s compression vacuum chamber.Using ANSYS simulation analysis,it is verified that the compression coil and its supporting components meet the design requirements in terms of structural strength,electrical insulation,and vacuum sealing.At the same time,an existing vacuum chamber was used to design and process a test platform for magnetic compression coils and supporting components.Finally,combined with the design process of the 0.5 T magnetic compression pre-research device,four feasible vacuum chamber design schemes were analyzed under the condition of 10 T high field strength magnetic compression: high resistivity stainless steel vacuum chamber,slit vacuum chamber,Double layer vacuum chamber,ceramic composite material vacuum chamber.Since the ceramic composite material vacuum chamber has no eddy current,there is no such problem as the structural strength and vacuum sealing caused by the electromagnetic load,so it is the most promising solution.In this paper,the magnetic field configuration,vacuum chamber and magnetic compression coil of HFRC device are designed in more detail.The next step will enter the processing stage. |
PDF Full Text Request