Development of a multi-channel visible bremsstrahlung measurement system for the effective charge in the versatile experiment spherical torus (VEST).

IF 1.3 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Review of Scientific Instruments Pub Date : 2024-09-01 DOI:10.1063/5.0219387

J W Yoo, C Sung, J Jang, T H Eom, W S Lee, J H Kim, J H Byun, W I Jeong, Hong-Sik Yun, Jae Young Jang, T K Kim, S G Oh, Yong-Seok Hwang

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Abstract

A diagnostic system for measuring the effective charge in the versatile experiment spherical torus (VEST) has been developed. The system utilizes a toroidal array to observe the plasma radius on the low magnetic field side, providing a spatially resolved Zeff. The target wavelength of visible bremsstrahlung (VB) was carefully selected to avoid contamination by line emissions. The detector signal was calibrated using a halogen light source and an integrating sphere to obtain an absolute value of the radiative power from each chord. The local emissivity profile was reconstructed from the line-integrated VB emission using the Abel inversion method. Reconstruction tests were performed on various shapes of phantom profiles to effectively reconstruct the local emissivity from the measurements. We found that the initial measurements of the multi-channel VB system were consistent with the results of other independent measurements, supporting the validity of the new measurements. Finally, we obtained the initial result of Zeff in the VEST.

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开发多通道可见轫致辐射测量系统，用于测量多功能实验球环（VEST）中的有效电荷。

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.