The R&D progress of 4 MW EAST-NBI high current ion source

Yahong Xie; Chundong Hu; Sheng Liu; Yongjian Xu; Lizhen Liang; Yuanlai Xie; Peng Sheng; Caichao Jiang; Zhimin Liu

doi:10.1063/1.4831747

The R&D progress of 4 MW EAST-NBI high current ion source

Rev Sci Instrum. 2014 Feb;85(2):02B315. doi: 10.1063/1.4831747.

Authors

Yahong Xie¹, Chundong Hu¹, Sheng Liu¹, Yongjian Xu¹, Lizhen Liang¹, Yuanlai Xie¹, Peng Sheng¹, Caichao Jiang¹, Zhimin Liu¹

Affiliation

¹ Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China.

PMID: 24593592
DOI: 10.1063/1.4831747

Abstract

A high current ion source, which consists of the multi-cusp bucket plasma generator and tetrode accelerator with multi-slot apertures, is developed and tested for the Experimental Advanced Superconducting Tokamak neutral beam injector. Three ion sources are tested on the test bed with arc power of 80 kW, beam voltage of 80 keV, and beam power of 4 MW. The arc regulation technology with Langmuir probes is employed for the long pulse operation of ion source, and the long pulse beam of 50 keV @ 15.5 A @ 100 s and 80 keV @ 52A @ 1s are extracted, respectively.