Gamma-ray spectrometer based on a transition edge sensor for nuclear materials analysis

Hatakeyama, Shuichi*; Ono, Masashi*; Takahashi, Hiroyuki*; Damayanthi, R. M. T.*; Otani, Chiko*; Yasumune, Takashi ; Onishi, Takashi ; Takasaki, Koji ; Koyama, Shinichi

We designed and fabricated a hard X-ray and gamma-ray TES spectrometer for nuclear materials analysis. The superconducting tin absorber is coupled to an Ir/Au TES by using a gold post to improve the thermal contact between the absorber and the TES. The reported energy resolution is 156 eV FWHM at 59.5 keV and 166 eV FWHM at 122 keV gamma-rays. We performed measurement of a Pu sample and clearly separated the $^{239}$ Pu (56.828 keV) and the $^{241}$ Am (59.5 keV) peaks by this TES microcalorimeter which cannot be resolved by the HPGe detector.

Language	:	English
Journal	:	Journal of Low Temperature Physics
Volume	:	176
Number	:
Pages	:	p.560 - 565
Publication Year/Month	:	2014/01
Meeting title	:	15th International Workshop on Low Temperature Detectors (LTD-15)
Held date	:	2013/06
Location (city)	:	Pasadena
Location (country)	:	U.S.A.
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1007/s10909-014-1090-z
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	Gamma-ray spectroscopy; Microcalorimeter; Transition-edge sensor
Research Facility	:	AGF(照射燃料試験施設)
Press Release	:
JAEA R&D Navigator	:
Cooperating Institute	:	東京大学

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Registration No. : BB20140734
JAEA Abstracts No. :
Paper Submission No. : 30337

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