Medium-energy electron spectrometers on Macao Science Satellite-1

The Macao Science Satellite-1 is a two-satellite constellation specifically designed to study the geomagnetic field and particle radiation environment in low Earth orbit, particularly in the South Atlantic Anomaly region, with a low inclination orbit. Each of the two MSS-1 satellites carries a mediu...

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Bibliographic Details
Published in:Science China. Technological sciences 2024-11, Vol.67 (11), p.3324-3343
Main Authors: Ye, YuGuang, Liu, Ying, Zou, Hong, Zong, QiuGang, Chen, JiaLi, Yu, XiangQian, Shi, WeiHong, Ou, JiaMing, Liu, JianBin, Yu, LiJia, Zhou, Jun, Huang, He, Yuan, ShiGeng, Su, Wen, Suo, Le
Format: Article
Language:English
Subjects:
Astronauts
Earth magnetosphere
Electron precipitation
Electrons
Emergency warning programs
Engineering
Geomagnetic field
Geomagnetism
Inner radiation belt
Interplanetary magnetic field
Jupiter
Low earth orbits
Pinholes
Pitch (inclination)
Radiation
Radiation belts
Satellite constellations
Satellite imagery
Satellites
Solar magnetic field
Solar wind
Spectrometers
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Summary:The Macao Science Satellite-1 is a two-satellite constellation specifically designed to study the geomagnetic field and particle radiation environment in low Earth orbit, particularly in the South Atlantic Anomaly region, with a low inclination orbit. Each of the two MSS-1 satellites carries a medium-energy electron spectrometer (MES). The MES sensor heads are based on pinhole imaging technology, which can simultaneously measure 50–600 keV electrons incident from nine directions with a field of view (FOV) of 180° × 30°. The two MESs can realize the pitch angle coverage of medium energy electrons at most positions in the orbit. The MSS-1 A/B MESs can realize direct observation of precipitating electrons and electrons near their loss cones. It can help to study the electron generation mechanism in the inner radiation belt and quantify the precipitation of magnetospheric energetic electrons. Combined with the geomagnetic index, solar wind parameters, interplanetary magnetic field conditions, etc., it can also help to build a dynamic evolution model of energetic electrons in the near-Earth space, to realize the early warning and prediction of space weather based on the observation data, which can provide safety for spacecraft and astronauts in the near-Earth space.
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-023-2676-6