研究目的
To develop a computational tool for calculating the spectral, spatial, and temporal responses of multi-energy soft x-ray (ME-SXR) pinhole cameras for arbitrary plasma densities, temperature, and impurity densities, enabling the study of impurity sources, core transport, and impurity accumulation in tokamaks.
研究成果
The developed computational tool can estimate the number of x-ray photons from tokamak plasmas impinging on multi-energy soft x-ray detectors, with computed brightnesses ranging from few 102 counts pixel?1 ms?1. The typical spatial resolution in the mid-plane is ≈0.5 cm with a photon-energy resolution of 500 eV at a 500 Hz frame rate, enabling the study of edge plasma physics such as impurity influx and transport after Edge localized modes (ELMs).
研究不足
The tool currently considers levels with principle number n ≤ 10 in FLYCHK, including the recombination process. More realistic profiles with poloidal asymmetry or impurity transport effects will be computed in the future.