Development of line integrated density measurements in tangential interferometer/polarimeter system on JT-60SA

JT-60SAにおける接線入射干渉/偏光計による線積分電子密度計測の進展

荒川 弘之; 笹尾 一; 河野 康則; 伊丹 潔

Arakawa, Hiroyuki; Sasao, Hajime; Kawano, Yasunori; Itami, Kiyoshi

Throughout the plasma discharge in JT-60SA ( 100 s), accurate measurements and real-time feedback of the electron density are required. Tangential interferometer/polarimeter system in JT-60SA has been adopted as an essential method to measure the line integrated plasma electron density. In this presentation, we will show the current status of tangential interferometer/polarimeter system in JT-60SA. In addition, we will show an error correction method with using the data of the tangential interferometer/polarimeter system in JT-60U. An alternative method for improving the reliabilities of measurement will be also presented.