Development of TES microcalorimeter for high precision spectroscopy of LX-ray photons emitted from transuranium elements

Katsunori Ueno, Akihiro Yamaguchi, Keisuke Nakamura, Keisuke Maehata, Kenji Ishibashi, Takahiro Umeno, Keiichi Tanaka, Koji Takasaki

Research output: Contribution to journalArticle

Abstract

A microcalorimeter with the superconducting transition edge sensor (TES) with a Au absorber of 5.0 μm thick was fabricated for the energy dispersive measurement of LX-ray photons emitted from transuranium elements. The TES microcalorimeter and a superconducting quantum interference device (SQUID) amplifier chips were cooled by operating a compact 3 He- 4 He dilution refrigerator without consuming liquid helium by loading a Gifford-McMahon (GM) cooler. Since the cold stages of the GM cooler are tightly coupled to the heat exchangers of the dilution refrigerator, the TES and SQUID chips suffered from mechanical vibrations induced by a reciprocating motion of the displacer of the GM cooler. Detection signals of LX-ray photons emitted from an 241 Am source were observed by operating the TES microcalorimeter in severe noise environment induced by mechanical vibrations.

Original languageEnglish
Pages (from-to)522-525
Number of pages4
Journaljournal of nuclear science and technology
Volume45
DOIs
Publication statusPublished - Jan 1 2008

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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