X-ray spectroscopy of highly ionized atoms using Transition Edge Sensor (TES) microcalorimeters at the NIST EBIT

NIST has built a new broadband X-ray spectrometer from an array of 192 individual TES (Transition Edge Sensor) microcalorimeters, designed specifically for high resolution spectroscopy of X-ray transitions in highly ionized atoms, spanning a spectral range from a few hundred eV to 20 keV. Commissioned recently at the NIST EBIT (electron beam ion trap) facility, this time-resolved, photon-counting TES Spectrometer is dubbed the acronym ``NETS''. We present the earliest NETS observations of X-ray emissions from various ion species created in the NIST EBIT [1], which serve to illustrate its capabilities. Ongoing studies enabled by NETS, including tests of atomic theory and other potential applications, are also presented at this conference.~ [1] P. Szypryt, \textit{et al}., Rev. Sci. Instrum. \textbf{90}, 123107 (2019)