Development of a Gamma-Ray Detector With Iridium Transition Edge Sensor Coupled to a Pb Absorber

Author

Damayanthi, Rathnayaka Mudiyanselage Thushara ; Leman, Steven W. ; Takahashi, Hiroyuki ; Ohno, Masashi ; Minamikawa, Yasuhiro ; Nishimura, Kentaro ; Iyomoto, Naoko

Author_Institution

Dept. of Nucl. Eng. & Manage., Univ. of Tokyo, Tokyo, Japan

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

540

Lastpage

543

Abstract

We have recently started to develop a high-resolution gamma-ray spectrometer for material defect analysis. Our gamma-ray detector is a microcalorimeter consisting of an iridium/gold bilayer transition edge sensor (TES) thermometer and a bulk Pb absorber, which is directly coupled to a TES with Stycast 2850FT epoxy. This paper describes our TES based gamma-ray detector and the first experimental results for 662 keV and 1173 keV incident gamma-rays. We report an energy resolution of 4.7 keV at 662 keV and 2.9 keV at 1173 keV.

Keywords

gamma-ray detection; gamma-ray spectrometers; particle calorimetry; thermometers; Pb absorber; Stycast 2850FT epoxy; energy resolution; gamma-ray detector; high-resolution gamma-ray spectrometer; iridium transition edge sensor; iridium-gold bilayer transition edge sensor thermometer; microcalorimeter; Bulk Pb absorber; gamma-ray spectroscopy; iridium; transition-edge sensors;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2019295

Filename

5153084