高帯域フィードバック回路を用いたSQUID磁束計における高周波ノイズ影響の緩和  [in Japanese] Reduction of Effects of High-Frequency Noise on SQUID Magnetometer Using High-bandwidth Feedback Electronics  [in Japanese]

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Author(s)

    • 小山 大介 Oyama D.
    • 金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 宮本 政和 Miyamoto M.
    • 金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 上原 弦 Uehara G.
    • 金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology
    • 賀戸 久 Kado H.
    • 金沢工業大学先端電子技術応用研究所 Applied Electronics Laboratory, Kanazawa Institute of Technology

Abstract

  We report the potential of high-bandwidth feedback electronics to reduce the effects of high-frequency noise on a SQUID magnetometer. We developed a parallel type FLL system that has two feedback loops. One loop acts as a magnetometer for low-frequency magnetic signals (FLL-L). The other reduces high-frequency magnetic noise (FLL-H). The prototype of the parallel FLL system is designed to have a bandwidth of DC to 1 kHz for FLL-L and 40 kHz to 4 MHz for FLL-H. We carried out some experiments to the demonstrate efficacy of the parallel type FLL. The effects of high-frequency noise effects on a SQUID magnetometer were reduced by FLL-H in observation of <i>Φ-V</i> characteristics and measurement of magnetic noise performance.

Journal

  • Journal of the Magnetics Society of Japan

    Journal of the Magnetics Society of Japan 34(3), 444-448, 2010

    The Magnetics Society of Japan

Codes

  • NII Article ID (NAID)
    130000262899
  • NII NACSIS-CAT ID (NCID)
    AA12297999
  • Text Lang
    JPN
  • ISSN
    1882-2924
  • NDL Article ID
    10696238
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z15-398
  • Data Source
    NDL  J-STAGE 
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