Development of a limiter-like Langmuir probe system for the Q-shu university experiment with steady-state spherical tokamak (QUEST) all-metal device.

IF 1.7 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Review of Scientific Instruments Pub Date : 2025-09-01 DOI:10.1063/5.0283183

Y Nagashima, K Hanada, H Zushi, H Idei, M Hasegawa, K Nakamura, T Onchi, R Ikezoe, T Ido, T Kinoshita, A Fujisawa, S Kawasaki, T Nagata, S Shimabukuro, T Mutaguchi, K Kono, I Niiya, I Sugiyama, A Higashijima, S Kojima, K Kuroda, A Ejiri, Y Takase, T Shikama, A Kuzmin, K Nagaoka

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引用次数: 0

Abstract

A limiter-like Langmuir probe system was developed to measure scrape-off layer (SOL) plasmas in the Q-shu University Experiment with a steady-state Spherical Tokamak (QUEST) all-metal device. The system is mainly made of metals such as tungsten to keep compatibility with the all-metal conditions under which retention of plasma fueling gases in first walls is controlled. The system also includes built-in water coolant systems to withstand high heat loads originating from high energy electrons excited by radio frequency plasma heating/current drive systems during the fully non-inductive operations. Development of the system enables us to measure scrape-off layer plasmas in the presence of high energy electrons during fully non-inductive steady-state tokamak operations in QUEST. Preliminary experimental results of plasma measurements in QUEST SOL plasmas where high energy particles exist are presented.

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Q-shu大学稳态球形托卡马克（QUEST）全金属装置实验用类限制器Langmuir探针系统的研制。

在苏州大学的稳态球形托卡马克（QUEST）全金属装置实验中，开发了一种类似限制器的Langmuir探针系统，用于测量刮擦层（SOL）等离子体。该系统主要由钨等金属制成，以保持与全金属条件的兼容性，在这种条件下，等离子体燃料气体在第一壁中的保留被控制。该系统还包括内置的水冷却系统，可以在完全无感操作期间承受由射频等离子体加热/电流驱动系统激发的高能电子产生的高热负荷。该系统的开发使我们能够在QUEST中完全无感稳态托卡马克操作期间测量高能电子存在下的刮脱层等离子体。介绍了在高能粒子存在的QUEST SOL等离子体中进行等离子体测量的初步实验结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Review of Scientific Instruments 工程技术-物理：应用

CiteScore

3.00

自引率

12.50%

发文量

758

审稿时长

2.6 months

期刊介绍： Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.