Development of Bulk Superconducting-Absorber Coupled Transition-Edge Sensor Detectors for Positron Annihilation Spectroscopy

Author

Thushara Damayanthi, R.M. ; Ohno, M. ; Hatakeyama, S. ; Takahashi, Hiroki ; Otani, C.

Author_Institution

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

Volume

23

Issue

3

fYear

2013

fDate

41426

Firstpage

2100304

Lastpage

2100304

Abstract

We present a high-resolution bulk tin-absorber coupled transition-edge sensor microcalorimeter to be applied for positron annihilation spectroscopy at 511 keV. We demonstrate an energy resolution of 526 eV at 662 keV from a ¹³⁷Cs source. This is the best energy resolution reported so far for any available detector at this photon energy. Further works are ongoing to reduce the mechanical vibrations of the cryogenic system in order to optimize the energy resolution of the detector.

Keywords

calorimeters; cryogenics; positron annihilation; superconducting devices; ¹³⁷Cs source; bulk superconducting-absorber coupled transition-edge sensor detectors; cryogenic system; energy resolution; high-resolution bulk tin-absorber coupled transition-edge sensor microcalorimeter; mechanical vibrations; photon energy; positron annihilation spectroscopy; Detectors; Energy resolution; Gamma rays; Gold; Lead; Silicon compounds; Tin; Bulk Sn absorber; positron annihilation spectroscopy; saturated current pulse; transition edge sensor;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2012.2233258

Filename

6378405