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.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
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
关键词
调制外差技术
毫米波
反射仪
聚变等离子体
modulation heterodyne technique, millimeter wave, reflectometer.
