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Title: A Wide Field of View Plasma Spectrometer

Abstract

Here we present a fundamentally new type of space plasma spectrometer, the wide field of view plasma spectrometer, whose field of view is >1.25π ster using fewer resources than traditional methods. The enabling component is analogous to a pinhole camera with an electrostatic energy-angle filter at the image plane. Particle energy-per-charge is selected with a tunable bias voltage applied to the filter plate relative to the pinhole aperture plate. For a given bias voltage, charged particles from different directions are focused by different angles to different locations. Particles with appropriate locations and angles can transit the filter plate and are measured using a microchannel plate detector with a position-sensitive anode. Full energy and angle coverage are obtained using a single high-voltage power supply, resulting in considerable resource savings and allowing measurements at fast timescales. Lastly, we present laboratory prototype measurements and simulations demonstrating the instrument concept and discuss optimizations of the instrument design for application to space measurements.

Authors:
 [1];  [1];  [2];  [1];  [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of New Hampshire, Durham, NH (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE; LLRD
OSTI Identifier:
1304816
Report Number(s):
LA-UR-16-21086
Journal ID: ISSN 2169-9380
Grant/Contract Number:  
AC52-06NA25396; 20130564ER
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Space Physics
Additional Journal Information:
Journal Volume: 121; Journal Issue: 7; Journal ID: ISSN 2169-9380
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 47 OTHER INSTRUMENTATION; Heliospheric and Magnetospheric Physics

Citation Formats

Skoug, Ruth M., Funsten, Herbert O., Moebius, Eberhard, Harper, Ron W., Kihara, Keith H., and Bower, Jonathan S. A Wide Field of View Plasma Spectrometer. United States: N. p., 2016. Web. doi:10.1002/2016JA022581.
Skoug, Ruth M., Funsten, Herbert O., Moebius, Eberhard, Harper, Ron W., Kihara, Keith H., & Bower, Jonathan S. A Wide Field of View Plasma Spectrometer. United States. doi:10.1002/2016JA022581.
Skoug, Ruth M., Funsten, Herbert O., Moebius, Eberhard, Harper, Ron W., Kihara, Keith H., and Bower, Jonathan S. Fri . "A Wide Field of View Plasma Spectrometer". United States. doi:10.1002/2016JA022581. https://www.osti.gov/servlets/purl/1304816.
@article{osti_1304816,
title = {A Wide Field of View Plasma Spectrometer},
author = {Skoug, Ruth M. and Funsten, Herbert O. and Moebius, Eberhard and Harper, Ron W. and Kihara, Keith H. and Bower, Jonathan S.},
abstractNote = {Here we present a fundamentally new type of space plasma spectrometer, the wide field of view plasma spectrometer, whose field of view is >1.25π ster using fewer resources than traditional methods. The enabling component is analogous to a pinhole camera with an electrostatic energy-angle filter at the image plane. Particle energy-per-charge is selected with a tunable bias voltage applied to the filter plate relative to the pinhole aperture plate. For a given bias voltage, charged particles from different directions are focused by different angles to different locations. Particles with appropriate locations and angles can transit the filter plate and are measured using a microchannel plate detector with a position-sensitive anode. Full energy and angle coverage are obtained using a single high-voltage power supply, resulting in considerable resource savings and allowing measurements at fast timescales. Lastly, we present laboratory prototype measurements and simulations demonstrating the instrument concept and discuss optimizations of the instrument design for application to space measurements.},
doi = {10.1002/2016JA022581},
journal = {Journal of Geophysical Research. Space Physics},
number = 7,
volume = 121,
place = {United States},
year = {2016},
month = {7}
}

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