Magnetic Search Coil (MSC) of Plasma Wave Experiment (PWE) aboard the Arase (ERG) satellite

• Ozaki, Mitsunori

  Graduate School of Natural Science and Technology, Kanazawa University

• Yagitani, Satoshi

  Graduate School of Natural Science and Technology, Kanazawa University

• Kasahara, Yoshiya

  Graduate School of Natural Science and Technology, Kanazawa University

• Kojima, Hirotsugu

  Research Institute for Sustainable Humanosphere, Kyoto University

• Kasaba, Yasumasa

  Graduate School of Science, Tohoku University

• Kumamoto, Atsushi

  Graduate School of Science, Tohoku University

• Tsuchiya, Fuminori

  Graduate School of Science, Tohoku University

• Matsuda, Shoya

  Institute for Space–Earth Environmental Research, Nagoya University

• Matsuoka, Ayako

  Institute of Space and Astronautical Science, Sagamihara

• Sasaki, Takashi

  Aerospace Division, NIPPI Corporation

• Yumoto, Takahiro

  Aerospace Division, NIPPI Corporation

Abstract

This paper presents detailed performance values of the Magnetic Search Coil (MSC) that is part of the Plasma Wave Experiment on board the Arase (ERG) satellite. The MSC consists of a three-axis search coil magnetometer with a 200-mm-long magnetic core. The MSC plays a central role in the magnetic field observations, particularly for whistler mode chorus and hiss waves in a few kHz frequency range, which may cause local acceleration and/or rapid loss of radiation belt electrons. Accordingly, the MSC was carefully designed and developed to operate well in harsh radiation environments. To ascertain the wave-normal vectors, polarizations, and refractive indices of the plasma waves in a wide frequency band, the output signals detected by the MSC are fed into the two different wave receivers: one is the WaveForm Capture/Onboard Frequency Analyzer for waveform and spectrum observations in the frequency range from a few Hz up to 20 kHz, and the other is the High Frequency Analyzer for spectrum observations in the frequency range from 10 to 100 kHz. The noise equivalent magnetic induction of the MSC is 20 fT/Hz¹/² at a frequency of 2 kHz, and the null depth of directionality is − 40 dB, which is equivalent to an angular error less than 1°. The MSC on board the Arase satellite is the first experiment using a current-sensitive preamplifier for probing the plasma waves in the radiation belts.

Journal

• Earth, Planets and Space

  Earth, Planets and Space 70 76-, 2018-05-04

  Springer Nature

Keywords

• Search coil magnetometer
• Arase (ERG) satellite
• Plasma waves
• Radiation belts
• Geospace

Details

• CRID: 1050001338207688576
• NII Article ID: 120006517903
• ISSN: 18805981
• DOI: 10.1186/s40623-018-0837-1
• HANDLE: 2433/234512
• Web Site: http://link.springer.com/content/pdf/10.1186/s40623-018-0837-1.pdf
• Web Site: http://link.springer.com/article/10.1186/s40623-018-0837-1/fulltext.html
• Text Lang: en
• Article Type: journal article
• Data Source:
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  • JaLC