HT-6M外差式毫米波反射仪的研制  

DEVELOPMENT OF HT-6M HETERODYNE MILLIMETER WAVE REFLECTOMETER 

作　　者：张劲松[1] 范叔平[1] 罗家融[1] 曹永军 

机构地区：[1]中国科学院等离子体物理研究所,安徽合肥230031

出　　处：《红外与毫米波学报》2000年第2期153-156,共4页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金!(编号 19789501)资助项目

摘　　要：报道了用于测量核聚变等离子体密度的毫米波反射仪 ,实验表明其空间分辨能力 :横向绝对分辨率 ΔRp=0 .7cm ,相对分辨率δRp=1.0 8% ,纵向绝对分辨率ΔLt=0 .832 cm,相对分辨率δLt=0 .943% ,时间分辨率～ 10μs,测量灵敏度为 Δγc=0 .79cm,相对测量灵敏度 δγc=1.2 2 % ,能满足实验要求 .The development of a characteristic heterodyne millimeter wave reflectometer used for density measurement on nuclear fusion plasma was reported. The instrument has high measuring sensitivity and good spatial resolution and interference resistance by adopting modulation and heterodyne techniqnes. It offers a new and high precision plasma diagnostic tool for nuclear fusion devices. The experiments show that the spatial resolution of this reflectometer is as follows: the poloidal absolute resolution ΔR p =0.7cm,the poloidal relative resolution δR p=ΔR p/R 0 =1.08%,the toroidal absolute resolution ΔL t= 0.832cm, the toroidal relative resolution δL t=ΔL t/L 0 =0.943% ( L 0 is the circumference length of the reflecting layer), the time resolution is about 10μs, the measuring sensitivity δγ c= 0.79cm, the relative measuring sensitivity δγ c=Δγ c/R 0 =1.22%. The above properties of this reflectometer can meet all needs required by experiments on HT 6M nuclear fusion device.

关 键 词：调制外差技术 毫米波 反射仪 聚变等离子体 

分 类 号：TL82[核科学技术—核技术及应用] O536[理学—等离子体物理]