Removal of deuterium retention by various helium discharge cleanings under strong magnetic field in EAST superconducting tokamak

被引：0

作者：

Yu, Yaowei ^{[1
]}

Sun, Hao ^{[1
]}

Wang, Chao ^{[1
]}

Cao, Bin ^{[1
]}

Zuo, Guizhong ^{[1
]}

Hu, Jiansheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei, Peoples R China

来源：

NUCLEAR MATERIALS AND ENERGY | 2024年 / 41卷

关键词：

Wall conditioning; Fuel retention; GDC; Magnetic field; EAST; WALL; HT-7;

D O I：

10.1016/j.nme.2024.101834

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Fuel (deuterium) removal by various helium (He) discharge cleanings under strong magnetic field are studied in EAST superconducting tokamak, including deuterium-to-helium changeover by main plasma operation, glow discharge cleaning (GDC), and ion cyclotron wall conditioning (ICWC). The study demonstrates that He-GDC works well in strong magnetic field, but the cleaning is poloidally located near the GDC anodes. Both He-GDC and He-ICWC are effective in removing deuterium under strong magnetic field. Moreover, deuterium-tohelium changeover by main plasma operation is highly effective in rapidly reducing the deuterium from the first wall surface. A comprehensive comparison of the three techniques shows that deuterium-to-helium changeover and He-GDC exhibit higher deuterium removal rate, and the pulse duration and duty cycle of HeICWC should be optimized to improve the deuterium removal. These studies present a comprehensive investigation on fuel removal techniques in EAST tokamak, providing valuable insights into the optimization of tritium removal strategies for future fusion reactors.

引用

页数：6

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