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中国环流器二号A装置(HL 2A)(设计指标:大半径1.65m、小半径0 4m、环向磁场2 8T、环向等离子体电流480kA)是我国已建成的第一个偏滤器托卡马克实验型磁约束聚变装置。HL 2A装置的首要研究目标是利用其独特的大体积极向偏滤器在高参数等离子体条件下开展与偏滤器位形运行有关的研究。本文总结了HL 2A装置工程设计、制造与安装、工程调试等研制的主要内容和关键技术。工程调试和初步物理实验的结果表明:HL 2A装置的主要工程参数和性能已具备开展物理实验的条件,并已成功地运行于偏滤器位形。2003年11月底,HL 2A装置获得等离子体电流168kA,等离子体存在时间920ms,等离子体线平均密度1.7×1019m-3,环向磁场1 4T,极限真空度为4.6×10-6Pa。
China Circulator No. 2 A (HL 2A) (Design Index: 1.65m for large radius, 44m for small radius, 28T for toroidal magnetic field, 480kA for toroidal plasma current) is the first divertor card built in China Mark experimental magnetic confinement fusion device. The primary research goal of the HL 2A unit was to use its unique large-volume polar divertor to study the divertor profile behavior under high-parametric plasma conditions. This article summarizes the main contents and key technologies of HL 2A device engineering design, manufacture and installation, engineering commissioning and so on. The results of engineering commissioning and preliminary physical experiments show that the main engineering parameters and performance of the HL 2A unit have been tested under physical conditions and have been successfully operated on the divertor profile. At the end of November 2003, the HL 2A device achieved a plasma current of 168 kA, a plasma presence time of 920 ms, an average plasma line density of 1.7 × 10 19 m -3, a toroidal magnetic field of 14 T and an ultimate vacuum of 4.6 × 10 -6 Pa.