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Spectroscopic measurement of X-rays and $$gamma$$-rays using a TES microcalorimeter with a thick Sn absorber; Spectrum analysis with Monte Carlo simulation

Yasumune, Takashi  ; Takasaki, Koji  ; Onishi, Takashi  ; Koyama, Shinichi  ; Hatakeyama, Shuichi*; Ono, Masashi*; Takahashi, Hiroyuki*

Superconducting transition edge sensors (TES) have been developed for identification of plutonium and minor actinides. We have developed TES with a thick Sn absorber to detect X-rays and $$gamma$$-rays. Energy dispersive spectroscopy measurements of an actinide source were conducted by the TES with a Sn absorber to demonstrate the potential for hard X-ray and $$gamma$$-ray detection. We also performed a Monte Carlo simulation using EGS5 code in order to analyze the obtained results.



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