期刊论文

Numerical investigation of Tokamak runaway current suppression by using massive deuterium-argon/neon gas mixture injection

中文

核技术

0253-3219

2024

47

8

98-106

10.11889/j.0253-3219.2024.hjs.47.080601

本校为第一机构

托卡马克等离子体破裂会产生逃逸电流,如不进行抑制,其携带的巨大能量将对设备造成严重破坏.本文使用DREAM程序中的流体模型,基于中国环流器二号M(HL-2M)托卡马克装置大等离子体电流放电条件,研究注入氘氩/氖混合气体对破裂逃逸电流的影响.研究表明:注入氘氩/氖混合气体可以抑制最终形成的平台逃逸电流.在讨论的破裂前等离子体电流Ip范围内,最优条件下氩/氖在混合气体中的含量应在0.50%～0.70%,氘的注入量应在1020～1021 m-3.在这个范围外,氘氩/氖混合气体注入对逃逸电流的抑制效果都会减弱,甚至会增大逃逸电流.破裂前等离子体电流Ip是影响逃逸电流的关键因素.Ip越大,形成的逃逸电流越大,也需要...

[Background]Tokamak plasma disruption generates a runaway current carrying enormous amounts of energy that,if not suppressed,can cause severe damage to equipment.[Purpose]This study aims to investigate the effects of injecting a deuterium-argon/neon gas mixture on a runaway current during plasma disruption.[Methods]Based on the high plasma current discharge conditions of the HL-2M tokamak device in China,numerical simulations were conducted using a fluid model in the DREAM code.Variations of plasma parameters,such as plasma current(Ip),ohmic cu...