Design of Control System for Preliminary Research Device of Magnetic Confinement Deuterium-Deuterium Fusion Neutron Source

doi:10.12096/j.2096-4528.pgt.24153

Abstract

Abstract:

Objectives The preliminary research device of magnetic confinement deuterium-deuterium fusion neutron source is a novel neutron source preliminary research device based on field-reversed configuration (FRC) cascade magnetic compression. It aims to leverage the experiences from the first-phase construction to enhance system design, significantly improve plasma parameters, and further expand research on magnetic compression fusion, laying the foundation for achieving a large-volume high-flux fusion neutron source in the third phase. Methods The preliminary research device control system optimized and reconstructed the control framework, provided safety interlocking, pulse control and comprehensive data services, coordinated and integrated each service into the automated discharge process through integrated control, and added a number of resources to expand applications and DevOps tool. Results Through the reconfiguration design, the comprehensive performance of the control system in terms of safety, stability and efficiency had been significantly improved. The safety interlock system ensured the safety of personnel and equipment during the experiment process, the pulse control system achieved high-precision timing control, the comprehensive data service provided full process support from data collection to analysis, and resource expansion applications and DevOps tools further improved the system flexibility and operation and maintenance efficiency. Conclusions By optimizing the control framework and introducing advanced operation and maintenance tools, the design can better meet the needs of complex device structure and precise discharge flow, and provide an efficient control system construction plan for the subsequent long-term cooperation construction of the magnetically confined deuterium fusion neutron source preliminary research device.

Key words: nuclear fusion, fusion neurton source, magnetic confinement, the plasma, field-reversed configuration (FRC), control system, deuterium-deuterium fusion

CLC Number:

TK 01

Liye WANG, Wei ZHENG, Bo RAO, Yong YANG, Yulin YANG, Weijie YE, Xiaohan XIE, Peilong ZHANG. Design of Control System for Preliminary Research Device of Magnetic Confinement Deuterium-Deuterium Fusion Neutron Source[J]. Power Generation Technology, 2024, 45(6): 1048-1059.

Figures/Tables 14

Fig. 1 Diagram of preliminary research device of the vacuum chamber of magnetic confinement deuterium-deuterium fusion neutron source

Fig. 2 System composition of preliminary research device of magnetic confinement deuterium-deuterium fusion neutron source

Fig. 3 Discharge flow of preliminary research device of magnetic confinement deuterium-deuterium fusion neutron source

Tab. 1 Comparison of control requirements between the preliminary research device and HFRC

控制需求	预研装置	HFRC
系统组成	新增中性束	主机、电源、诊断
电源规模	形成区48套、电离32套、准稳态10套、磁压缩112套	形成区32套
高压风险	60 kV	20 kV
安全防控	硬件实现	软件实现
集成时延	100 ms	2 s
时序需求	200 ns(5%抖动)	1 μs(10%抖动)
数据服务	新增分析处理	采集、存储、访问
调整总结	可自动化	人为操作

Fig. 4 Composition of control system for preliminary research device

Fig. 5 The hardware architecture of control system for preliminary research device

Fig. 6 Integrated structure of the control system

Fig. 7 Coupling between magnetic compression power control and module control

Fig. 8 Comprehensive data service execution process

Tab.2 Types of CFET resource

类别	操作	用法
Status	只读	反映软硬件服务的实时状态
Config	可读可写	软件层面参数设定，与硬件实际值无关
Method	调用执行	通过返回值反馈是否执行成功
Event	可订阅	主要用于Status/Config资源变化自动通知

Fig. 9 Transparent and unified resource access

Fig. 10 Operational model of CFET service

Fig. 11 Architecture for unified version management

Tab. 3 Operations and maintenance management functions based on Salt state files

状态文件	运维管理功能
描述CFET服务所需基础设施，包括.NET与Git等	确保基础设施环境的一致性和可预测性
定义应用程序的代码库位置、依赖项和服务配置	实现应用程序的自动化部署和更新
定义服务注册的配置和运行参数	节点上的服务能够自动注册到系统中
定义被监控的服务	监控和维护服务运行

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