H-mode operation in helium plasma with tungsten divertor and low input torque in EAST. (21st July 2020)

• Record Type: Journal Article
• Authors: Zhang, B.; Gong, X.; Qian, J.; Ding, R.; Huang, J.; Sun, Y.W.; Gu, X.; Li, Y.Y.; Gao, W.; Yu, Y.W.; Li, M.H.; Sun, Z.; Zhong, G.Q.; Duan, Y.M.; Mao, S.T.; Wang, L.; Ding, F.; Zang, Q.; Lyu, B.; Liu, H.Q.; Wang, Y.M.; Ma, Q.; Wang, Y.F.; Zhu, X.; Wang, S.X.; Huang, Y.H.; Liu, J.W.; Chen, Y.J.; Yang, Z.D.
• Other Names: collab.
• Is Part Of: Nuclear fusion. Volume 60:Number 9(2020)
• Publication Date: 2020-07-21
• Subjects: helium concentration -- energy confinement -- L-H transition power threshold -- type-I ELM -- RMP ELM control -- helium H-mode; Nuclear fusion -- Periodicals; 621.48405
• DOI: 10.1088/1741-4326/ab9be6
• Languages: English
• ISSNs: 0029-5515

Abstract

Abstract: To support the ITER early non-nuclear operational phase, recent helium experiments have been investigated intensively in the superconducting tokamak EAST equipped with ITER-like Tungsten divertor, under the condition of low injected torque. This paper demonstrates experimental observations from these experiments. In particular, we report the impact of helium concentration on the L-H transition power threshold, energy confinement, and the ELM behavior. Dependences of L-H threshold on electron density, plasma current and magnetic field are also discussed.