Article

Space Science Reviews

, Volume 179, Issue 1, pp 221-261

Open Access This content is freely available online to anyone, anywhere at any time.

The Relativistic Proton Spectrometer (RPS) for the Radiation Belt Storm Probes Mission

  • J. MazurAffiliated withThe Aerospace Corporation Email author 
  • , L. FriesenAffiliated withThe Aerospace Corporation
  • , A. LinAffiliated withThe Aerospace Corporation
  • , D. MabryAffiliated withThe Aerospace Corporation
  • , N. KatzAffiliated withThe Aerospace Corporation
  • , Y. DotanAffiliated withThe Aerospace Corporation
  • , J. GeorgeAffiliated withThe Aerospace Corporation
  • , J. B. BlakeAffiliated withThe Aerospace Corporation
  • , M. LooperAffiliated withThe Aerospace Corporation
    • , M. ReddingAffiliated withThe Aerospace Corporation
    • , T. P. O’BrienAffiliated withThe Aerospace Corporation
    • , J. ChaAffiliated withThe Aerospace Corporation
    • , A. BirkittAffiliated withThe Aerospace Corporation
    • , P. CarranzaAffiliated withThe Aerospace Corporation
    • , M. LalicAffiliated withThe Aerospace Corporation
    • , F. FuentesAffiliated withThe Aerospace Corporation
    • , R. GalvanAffiliated withThe Aerospace Corporation
    • , M. McNabAffiliated withThe Aerospace Corporation

Abstract

The Relativistic Proton Spectrometer (RPS) on the Radiation Belt Storm Probes spacecraft is a particle spectrometer designed to measure the flux, angular distribution, and energy spectrum of protons from ∼60 MeV to ∼2000 MeV. RPS will investigate decades-old questions about the inner Van Allen belt proton environment: a nearby region of space that is relatively unexplored because of the hazards of spacecraft operation there and the difficulties in obtaining accurate proton measurements in an intense penetrating background. RPS is designed to provide the accuracy needed to answer questions about the sources and losses of the inner belt protons and to obtain the measurements required for the next-generation models of trapped protons in the magnetosphere. In addition to detailed information for individual protons, RPS features count rates at a 1-second timescale, internal radiation dosimetry, and information about electrostatic discharge events on the RBSP spacecraft that together will provide new information about space environmental hazards in the Earth’s magnetosphere.

Keywords

RBSP Inner radiation belt CRAND Trapped protons Solar energetic protons Total ionizing dose Relativistic protons