Measurements of Magnetic Field Fluctuations for Plasma Wave Investigation by the Search Coil Magnetometers (SCM) Onboard
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Measurements of Magnetic Field Fluctuations for Plasma Wave Investigation by the Search Coil Magnetometers (SCM) Onboard Bepicolombo Mio (Mercury Magnetospheric Orbiter) Satoshi Yagitani1 · Mitsunori Ozaki1 · Fouad Sahraoui2 · Laurent Mirioni2 · Malik Mansour2 · Gerard Chanteur2 · Christophe Coillot3 · Sebastien Ruocco4 · Vincent Leray5 · Mitsuru Hikishima6 · Dominique Alison2 · Olivier Le Contel2 · Hirotsugu Kojima7 · Yoshiya Kasahara1 · Yasumasa Kasaba8 · Takashi Sasaki9 · Takahiro Yumoto9 · Yoshinari Takeuchi9 Received: 29 December 2019 / Accepted: 7 September 2020 © Springer Nature B.V. 2020
Abstract This paper describes the design and performance of the search coil magnetometers (SCM), which are part of the Plasma Wave Investigation (PWI) instrument onboard the BepiColombo/Mio spacecraft (Mercury Magnetospheric Orbiter), which will measure the electric field, plasma waves and radio waves for the first time in Mercury’s plasma environment. The SCM consists of two low-frequency orthogonal search coil sensors (LF-SC) measuring two components of the magnetic field (0.1 Hz – 20 kHz) in the spacecraft spin plane, and a dual-band search coil sensor (DB-SC) picking up the third component along the The BepiColombo mission to Mercury Edited by Johannes Benkhoff, Go Murakami and Ayako Matsuoka
B S. Yagitani
[email protected]
1
Advanced Research Center for Space Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
2
Laboratoire de Physique des Plasmas, CNRS - Ecole Polytechnique - Sorbonne Université Université Paris-Saclay - Observatoire de Paris-Meudon, Route de Saclay, 91128 Palaiseau, France
3
Laboratoire Charles Coulomb (L2C) UMR5221, Université de Montpellier, CNRS, 34095 Montpellier, France
4
LATMOS/CNRS - Université de Versailles - Sorbonne Université, 11, boulevard d’Alembert, 78280 Guyancourt, France
5
NEXEYA C&F - Space technologies consulting, 5 Rue Boudeville - ZI de Thibaud, 31100 Toulouse, France
6
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Kanagawa 252-5210, Japan
7
Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto 611-0011, Japan
8
Planetary Plasma and Atmospheric Research Center, Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
9
NIPPI Corporation, 3175 Showa-machi, Kanazawa-ku, Yokohama 236-8560, Japan
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spin axis at both low-frequencies (LF: 0.1 Hz – 20 kHz) and high-frequencies (HF: 10 kHz – 640 kHz). The DB-SC and the two LF-SC sensors form a tri-axial configuration at the tip of a 4.6-m coilable mast (MAST-SC) extending from the spacecraft body, to minimize artificial magnetic field contamination emitted by the spacecraft electronics. After the successful launch of the spacecraft on 20 October 2018, an initial function check for the SCM was conducted. The nominal function and performance of the sensors and preamplifiers were confirmed, even with the MAST-SC being retracted and stowed in the spacecraft b
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