Broad-band High-Energy Resolution Hard X-ray Spectroscopy using Transition Edge Sensors at SPring-8
Abstract
We have succeeded in operating a transition-edge sensor (TES) spectrometer and evaluating its performance at the SPring-8 synchrotron X-ray light source. The TES spectrometer consists of a 240 pixel National Institute of Standards and Technology (NIST) TES system, and 220 pixels are operated simultaneously with an energy resolution of ~eV at 6~keV at a rate of about 1~c/s/pixel. The tolerance for high count rates is evaluated in terms of energy resolution and live time fraction, leading to an empirical compromise of about 2 x 10^3 c/s/all pixels with an energy resolution of 5 eV at 6 keV. By utilizing the TES's wide-band spectroscopic capability, simultaneous multi-element analysis is demonstrated for a standard sample. We conducted X-ray absorption near-edge structure (XANES) analysis in fluorescence mode using the TES spectrometer. The excellent energy resolution of the TES enabled us to detect weak fluorescence lines from dilute samples and trace elements that have previously been difficult to resolve due to the nearly overlapping emission lines of other dominant elements. The neighboring lines of As K alpha and Pb L alpha2 of the standard sample were clearly resolved and the XANES of Pb L alpha2 was obtained. Moreover, the X-ray spectrum from the small amount of Fe in aerosols was distinguished from the spectrum of a blank target, which helps us to understand the targets and the environment. These results are the first important step for the application of high resolution TES-based spectroscopy at hard X-ray synchrotron facilities.
Keywords
Cite
@article{arxiv.2604.21846,
title = {Broad-band High-Energy Resolution Hard X-ray Spectroscopy using Transition Edge Sensors at SPring-8},
author = {Shinya Yamada and Yuto Ichinohe and Hideyuki Tatsuno and Ryota Hayakawa and Hirotaka Suda and Takaya Ohashi and Yoshitaka Ishisaki and Tomoya Uruga and Oki Sekizawa and Kiyofumi Nitta and Yoshio Takahashi and Takaaki Itai and Hiroki Suga and Makoto Nagasawa and Masato Tanaka and Minako Kurisu and Tadashi Hashimoto and Douglas Bennett and Ed Denison and William and Doriese and Malcolm Durkin and Joseph Fowler and Galen O'Neil and Kelsey Morgan and Dan Schmidt and Daniel Swetz and Joel Ullom and Leila Vale and Shinji Okada and Takuma Okumura and Toshiyuki Azuma and Toru Tamagawa and Tadaaki Isobe and Satoshi Kohjiro and Hirofumi Noda and Keigo Tanaka and Akimichi Taguchi and Yuki Imai and Kosuke Sato and Tasuku Hayashi and Teruhiko Kashiwabara and Kohei Sakata},
journal= {arXiv preprint arXiv:2604.21846},
year = {2026}
}
Comments
Review of Scientific Instruments, Accepted: December 04 2020