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Solar Energetic Particle Spectrometer (SEPS)An outstanding problem of solar and heliospheric physics is the transport of solar energetic particles. The more energetic particles arriving early in the event can be used to probe the transport processes. The arrival direction distribution of these particles carries information about scattering during their propagation to Earth that can be used to test models of interplanetary transport. Also, of considerable importance to crewed space missions is the level of ionizing radiation in the interplanetary medium, and the dose that the crew experiences during an intense solar particle event, as well as the risk to space systems. A recent study concludes that 90% of the absorbed dose results from particles in the energy range 20-550 MeV. We will describe a new compact instrument concept, SEPS, that can cover the energy range from 50-600 MeV with a single compact detector. This energy range has been difficult to cover. There are only limited data, generally available only in broad energy bins, from a few past and present instruments outside Earth s magnetosphere. The SEPS concept can provide improved measurements for this energy range and its simple light-weight design could be easily accommodated on future missions.
Document ID
20090032628
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Christl, Mark J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
July 8, 2009
Subject Category
Solar Physics
Report/Patent Number
M09-0327
Meeting Information
Meeting: International Cosmic Ray Conference
Location: Lodz
Country: Poland
Start Date: July 8, 2009
End Date: July 15, 2009
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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