HL-1M装置的真空运行与质谱诊断

VACUUM OPERATION AND MASS SPECTRUM DIAGNOSIS ON THE HL-1M TOKAMAK

通过对真空运行模式、真空运行参数、辉光放电清洗和硅化壁处理手段的规范化,显著地降低了HL 1M装置的真空壁出气、本底杂质浓度、放电杂质出气比和再循环,成功地实现了高参数放电、长脉冲放电和装置暴露大气后快速恢复放电,并为验证低混杂电流驱动、离子回旋共振加热、电子回旋共振加热、中性束注入、弹丸注入和分子束注入实验及升级等离子体运行提供了良好的壁条件。描述了HL 1M装置真空系统、壁出气和再循环、质谱诊断和程序脉冲送气等方面的主要实验成果,这些结果为HL 2A装置的真空系统研制和运行提供有益的参考。

Normalization of the vacuum operation modes and vacuum operation parameters,glow discharge cleaning (He) and siliconzation wall conditioning considerably decrease the vacuum outgassing rate,the base impurity concentration,the impurity recycling and degassing rate during tokamak discharges,and the wall fuelling,high parameter discharges,longpulse discharges and the rapid restitution of discharges after exposure to air are successfully obtained.Excellent vacuum wall condition is provided for demonstrating the LHCD,ICRH,ECRH,MBI,PI and NBI experiments.The main experimental results,including the vacuum system,the control of outgassing rate and recycle,the mass spectrum diagnosis and programmed gas puffing,are described.It will be beneficial for vacuum system development and operation on the HL2A tokamak.