Transition Edge Sensor Microcalorimeter with Bismuth Absorber for Gamma-Ray Measurement

Tetsuya Tsuruta, Naoko Iyomoto, Shinya Asagawa, Yukino Hamamura, Yoshiki Nishida, Keisuke Maehata, Kazuhisa Mitsuda, Tasuku Hayashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We developed a transition edge sensor (TES) microcalorimeter to measure high-energy gamma-rays in the range of up to several MeV. We performed gamma-ray irradiation experiments using this TES microcalorimeter fabricated with a cubic bismuth cut out (1 × 1 × 0.7 mm). As a result, we successfully achieved an energy resolution of 0.92 keV for 662-keV gamma rays (137Cs) and 0.97 keV for 1332-keV gamma rays (60Co). In addition, we investigated methods to reduce low-frequency noise based on the results obtained by comparing the count rates of pulses with different decay time.

Original languageEnglish
Article number9408221
JournalIEEE Transactions on Applied Superconductivity
Issue number5
Publication statusPublished - Aug 2021

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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