Speaker
Qingxi Yang
(Institute of Plasma Physics)
Description
Lithium coating techonolgy and flowing liquid lithium limiter (Flili) have been applied on HT-7 tokamak and many significant results been obtained. A Flili for exploring lithium as potential plasma facing material was designed and manufactured for EAST tokamak, it is applied on the concept of the thin flowing flim which had been sucessfully tested in HT-7 tokamak. The Flili of EAST mainly composed of distributor, colletor, guide plate, heater, cooling system and one in-vessel electro-magnetic pump installed on the bottom of limiter which is totally different from it applied on the Flili of HT-7. The in-vessel electro-magnetic pump can make liquid lithium circulate from the bottom collector to the distributor of the limiter, which will make Flili steady-state operation and also drastically reduce the amount lithium used for experiment. the Flili can be moved along the guide rail into vacuum vessel to meet various plasma scenarios by driver system. A Flili has been successfully tested in EAST tokamak in 2015, significant achievements were achieved ed including the in-vessel electro-magnetic pump, working with the toroidal magnetic field of the EAST device, quite reliable to control the lithium circulation flow and flow speed, and circulating lithium layer with a thickness of lower 0.1mm and a flow rate 2cm3/s as well. Besides those, Some problems also were exposed ,which requires improvement of Flili for next compaign in EAST. The paper is mainly introduce covering the design , manufacturing and improvments of the Flili. The improvement Flili is forseen to be installed in EAST in 2016, and participated in operation for test.
Co-authors
Fang Ding
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Guizhong Zuo
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Hao Xu
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Jiangang Li
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Jiansheng Hu
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Jun Ren
(Princenton University Plasma Physics Laboratory, Princeton, NJ 08543, United States)
Qingxi Yang
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China;Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Yuntao Song
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
Zakharov Leonid
(Princenton University Plasma Physics Laboratory, Princeton, NJ 08543, United States)
Zhaoxi Chen
(Institute of Plasma Physics ,Chinese Academy of Sciences, Hefei, China)
