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<p>The Analyzer for Cusp Electrons (ACE) instruments on the Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission provide measurements of electron velocity distribution functions from two closely spaced spacecraft in a low Earth orbit that passes through the magnetospheric cusp. The precipitating and upward-going electrons provide a sensitive probe of the magnetic field line topology and electrostatic potential structure, as well as revealing dynamic processes. ACE measurements contribute to the top-level TRACERS goals of characterizing the spatial and temporal variation of magnetic reconnection at the terrestrial magnetopause and its relationship to dynamic structures in the cusp. ACE utilizes a classic hemispheric electrostatic analyzer on a spinning platform to provide full angular coverage with 10 degree by 7 degree resolution. ACE can measure electrons over an energy range of 20-13,500 electron volts, with fractional energy resolution of 19%. ACE provides 50&#xa0;ms cadence measurements of the electron velocity distribution, enabling sub-kilometer spatial resolution of cusp boundaries and other structures.</p>

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The TRACERS Analyzer for Cusp Electrons

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月14日

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  • Jasper S. Halekas,
  • Christian Hansen,
  • Suranga Ruhunusiri,
  • David Sheets,
  • Antonio Washington,
  • Richard M. Beals,
  • Scott R. Bounds,
  • Andrew Carton,
  • Ivar W. Christopher,
  • Danielle Crawford,
  • Katherine Deasy,
  • Jeffrey S. Dolan,
  • Richard Dvorsky,
  • Connor Feltman,
  • Garret Hinson,
  • Samuel Hisel,
  • Amanda Lasko,
  • Aidan Moore,
  • Katherine Morris,
  • Chris W. Piker,
  • Kevin Steele,
  • Darrelle Wilkinson,
  • Craig A. Kletzing,
  • David M. Miles

摘要

The Analyzer for Cusp Electrons (ACE) instruments on the Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission provide measurements of electron velocity distribution functions from two closely spaced spacecraft in a low Earth orbit that passes through the magnetospheric cusp. The precipitating and upward-going electrons provide a sensitive probe of the magnetic field line topology and electrostatic potential structure, as well as revealing dynamic processes. ACE measurements contribute to the top-level TRACERS goals of characterizing the spatial and temporal variation of magnetic reconnection at the terrestrial magnetopause and its relationship to dynamic structures in the cusp. ACE utilizes a classic hemispheric electrostatic analyzer on a spinning platform to provide full angular coverage with 10 degree by 7 degree resolution. ACE can measure electrons over an energy range of 20-13,500 electron volts, with fractional energy resolution of 19%. ACE provides 50 ms cadence measurements of the electron velocity distribution, enabling sub-kilometer spatial resolution of cusp boundaries and other structures.