Application of a data-driven tomography method for the Gas Electron Multiplier (GEM) based X-ray camera on EAST

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-02-07 DOI:10.1016/j.nima.2025.170281

Y. Hu , E. Li , C. Ma , C. Mai

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引用次数: 0

Abstract

A Gas Electron Multiplier (GEM) camera has been used for soft X-ray measurements on the Experimental Advanced Superconducting Tokamak (EAST), and the obtained data after a tomography calculation showed much useful information on the plasma macroscopic instabilities. A large experimental database has been built from the chord-integrated X-ray radiation signal measured by GEM, and we then develop a data-driven tomography method for fast viewing of X-ray emissivity profiles on the plasma cross-section. This tomography method is further applied in analyzing a plasma major disruption event, indicating there exists a vertical displacement event before a plasma current quench. This study suggests that the GEM camera with this fast data-driven tomography would be helpful for further feedback control of fusion plasmas to avoid plasma disruptions.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.