Monitoring of the relationship between Ha and Da emission as a detection method for water microleaks into ITER

2nd Conference on Plasma & Laser Research and Technologies

Vizgalov, I.V.^1 ; Sorokin, I.A.^1 ; Kurnaev, V.A.^1

National Research Nuclear University MEPhI, Kashirskoe highway 31, Moscow

115409, Russia^1

关键词: Detection methods;    Diagnostic systems;    Intensity ratio;    Low pressure discharge;    Microleakage;    Microleaks;    Plasma chambers;    Spectroscopic method;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/747/1/012020/pdf
DOI  :  10.1088/1742-6596/747/1/012020

来源: IOP

【 摘 要 】

The validation of spectroscopic method for water microleakage detection in ITER plasma chamber by IO Vis/IR diagnostic system is presented. The method is based on evaluation of the intensity ratio between Ha and Da spectroscopic lines. They have rather large intensity in low pressure discharges (glow, RF, microwave, for instance) and correspond to the middle of the range 615-700 nm with maximum of the IO Vis/IR sensitivity.