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Updated: May 26, 2025

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
Experimental validation of an imaging neutral particle analyzer in the EAST
Yang Liu1,2, Ming Xu2, Huishan Cai1
1School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China.
Abstract:
An imaging neutral particle analyzer (INPA) has been successfully designed and implemented in the Experimental Advanced Superconducting Tokamak to detect fast ions (FIs). The system capitalizes on carbon foils to ionize charge exchange neutral particles and utilizes scintillator screens to differentiate the energy and radial distribution of the particles. The detection characteristics of the pitch angle profile and energy resolution are illustrated, and the modeling-based energy calibration has been validated with the experimental data. Furthermore, the FI redistribution during sawtooth crashes has been effectively recorded by the INPA, manifesting its functionality.
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