학술논문
Transition Edge Sensor Microcalorimeter With Bismuth Absorber for Gamma-Ray Measurement
Document Type
Periodical
Author
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 31(5):1-4 Aug, 2021
Subject
Language
ISSN
1051-8223
1558-2515
2378-7074
1558-2515
2378-7074
Abstract
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 ( 137 Cs) and 0.97 keV for 1332-keV gamma rays ( 60 Co). 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.