High energy X-ray Compton spectroscopy via iterative reconstruction

• DOI: 10.1016/j.nima.2019.163032
• Publication Date: 2019-10-24T16:37:49Z
• Authors: D. Haden; G. Golovin; W. Yan; C. Fruhling; P. Zhang; B. Zhao; S. Banerjee; D. Umstadter
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract In this paper, we report on the design and implementation of a compact and robust Compton spectrometer capable of measuring x-rays in the energy range 1 to 20 MeV. An iterative reconstruction method was employed to reconstruct the x-ray spectrum without assuming an initial distribution function. Spectral resolution was further optimized by judicious choice of composition and thickness of the electron-convertor, as well as angular acceptance into the spectrometer. A particle transport code was used to account for all instrument-related factors. Performance of the spectrometer was demonstrated experimentally by characterizing x-rays generated by high-order multiphoton Thomson scattering.