Development of a superconducting X-ray microcalorimeter with a titanium/gold thin film as a thermometer

R. Fujimoto, K. Mitsuda, T. Miyazaki, K. Maegami, Y. Aruga, T. Oshima, M. Yamazaki, Shuichi Shoji, H. Kudo, Y. Yokoyama, T. Mihara, H. M. Shimizu

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    By applying a transition edge sensor (TES) as the thermometer in an X-ray microcalorimeter, the intrinsic energy resolution is expected to be significantly improved. The extremely low intrinsic noise allows us to operate the calorimeter at temperatures as high as one can obtain by pumping liquid 3He (approximately 0.3 K) and still achieve an energy resolution comparable to conventional semiconducting microcalorimeters operating at approximately 60 mK (ΔE approximately 10 eV FWHM). Taking this advantage into account, we are developing a titanium/gold bilayer TES calorimeter fabricated on a silicon wafer. The transition temperature is about 0.5 K. We have succeeded in detecting X-ray photons from 3 to 25 keV, which proves that this TES calorimeter works in a wide energy range. The energy resolution is, however, still much worse than we expected -550 eV (FWHM) at 5.9 keV. This is because the design parameters are not optimized. Several approaches to improve the performance are described.

    Original languageEnglish
    Pages (from-to)180-183
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
    Volume444
    Issue number1
    DOIs
    Publication statusPublished - 2000 Apr 7

    Fingerprint

    Thermometers
    thermometers
    Calorimeters
    calorimeters
    titanium
    Titanium
    Gold
    gold
    Full width at half maximum
    X rays
    Thin films
    Sensors
    thin films
    x rays
    sensors
    Silicon wafers
    Superconducting transition temperature
    Photons
    energy
    low noise

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Development of a superconducting X-ray microcalorimeter with a titanium/gold thin film as a thermometer. / Fujimoto, R.; Mitsuda, K.; Miyazaki, T.; Maegami, K.; Aruga, Y.; Oshima, T.; Yamazaki, M.; Shoji, Shuichi; Kudo, H.; Yokoyama, Y.; Mihara, T.; Shimizu, H. M.

    In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 444, No. 1, 07.04.2000, p. 180-183.

    Research output: Contribution to journalArticle

    Fujimoto, R. ; Mitsuda, K. ; Miyazaki, T. ; Maegami, K. ; Aruga, Y. ; Oshima, T. ; Yamazaki, M. ; Shoji, Shuichi ; Kudo, H. ; Yokoyama, Y. ; Mihara, T. ; Shimizu, H. M. / Development of a superconducting X-ray microcalorimeter with a titanium/gold thin film as a thermometer. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2000 ; Vol. 444, No. 1. pp. 180-183.
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    AU - Maegami, K.

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    AU - Oshima, T.

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    AU - Shoji, Shuichi

    AU - Kudo, H.

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