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apes: acute precipitating electron spectrometer - a high time resolution monodirectional magnetic deflection electron spectrometerWe present a description of the Acute Precipitating Electron Spectrometer (APES) that was designed and built for the Ground-to-Rocket Electron Electrodynamics Correlative Experiment (GREECE) auroral sounding rocket mission. The purpose was to measure the precipitating electron spectrum with high time resolution, on the order of milliseconds. The trade-off made in order to achieve high time resolution was to limit the aperture to only one look direction. The energy selection was done by using a permanent magnet to separate the incoming electrons, such that the different energies would fall onto different regions of the microchannel plate and therefore be detected by different anodes. A rectangular microchannel plate (MCP) was used (15 mm x 100 mm), and there was a total of 50 discrete anodes under the MCP, each one 15 mm x 1.5 mm, with a 0.5 mm spacing between anodes. The target energy range of APES was 200 eV to 30 keV.
Document ID
20170003060
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Michell, R. G.
(Maryland Univ. College Park, MD, United States)
Samara, M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Grubbs, G., II
(Catholic Univ. of America Washington, DC, United States)
Ogasawara, K.
(Southwest Research Inst. San Antonio, TX, United States)
Miller, G.
(Southwest Research Inst. San Antonio, TX, United States)
Trevino, J. A.
(Southwest Research Inst. San Antonio, TX, United States)
Webster, J.
(Southwest Research Inst. San Antonio, TX, United States)
Stange, J.
(Southwest Research Inst. San Antonio, TX, United States)
Date Acquired
April 6, 2017
Publication Date
June 7, 2016
Publication Information
Publication: Journal of Geophysical Research: Space Physics
Volume: 121
Issue: 6
ISSN: 2169-9380
Subject Category
Plasma Physics
Geophysics
Report/Patent Number
GSFC-E-DAA-TN40885
Funding Number(s)
CONTRACT_GRANT: NNG17PT01A
CONTRACT_GRANT: NNX12AE76G
CONTRACT_GRANT: NNG11PL10A
CONTRACT_GRANT: NNX15AG06G
Distribution Limits
Public
Copyright
Other