The two wide-angle imaging neutral-atom spectrometers (TWINS) NASA mission-of-opportunity

D. J. McComas (Corresponding Author), F. Allegrini, J. Baldonado, B. Blake, P. C. Brandt, J. Burch, J. Clemmons, W. Crain, D. Delapp, R. DeMajistre, D. Everett, H. Fahr, L. Friesen, H. Funsten, J. Goldstein, M. Gruntman, R. Harbaugh, R. Harper, H. Henkel, C. HolmlundG. Lay, D. Mabry, D. Mitchell, U. Nass, C. Pollock, S. Pope, M. Reno, S. Ritzau, E. Roelof, E. Scime, M. Sivjee, R. Skoug, T. S. Sotirelis, M. Thomsen, C. Urdiales, P. Valek, Kai Viherkanto, S. Weidner, Tomi Ylikorpi, M. Young, J. Zoennchen

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) is a NASA Explorer Mission-of-Opportunity to stereoscopically image the Earth’s magnetosphere for the first time. TWINS extends our understanding of magnetospheric structure and processes by providing simultaneous Energetic Neutral Atom (ENA) imaging from two widely separated locations. TWINS observes ENAs from 1–100 keV with high angular (∼4°×4°) and time (∼1-minute) resolution. The TWINS Ly-α monitor measures the geocoronal hydrogen density to aid in ENA analysis while environmental sensors provide contemporaneous measurements of the local charged particle environments. By imaging ENAs with identical instruments from two widely spaced, high-altitude, high-inclination spacecraft, TWINS enables three-dimensional visualization of the large-scale structures and dynamics within the magnetosphere for the first time. This “instrument paper” documents the TWINS design, construction, calibration, and initial results. Finally, the appendix of this paper describes and documents the Southwest Research Institute (SwRI) instrument calibration facility; this facility was used for all TWINS instrument-level calibrations.
Original languageEnglish
Pages (from-to)157-231
Number of pages75
JournalSpace Science Reviews
Volume142
Issue number1-4
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fingerprint

neutral atoms
spectrometer
spectrometers
calibration
magnetosphere
energetics
Earth magnetosphere
visualization
aid
high altitude
spacecraft
magnetospheres
hydrogen
inclination
sensor
monitors
charged particles
sensors

Keywords

  • ENA
  • ENA instrumentation
  • Energetic neutral atom imaging
  • Geocorona
  • Magnetosphere
  • Space plasma calibration facility

Cite this

McComas, D. J., Allegrini, F., Baldonado, J., Blake, B., Brandt, P. C., Burch, J., ... Zoennchen, J. (2009). The two wide-angle imaging neutral-atom spectrometers (TWINS) NASA mission-of-opportunity. Space Science Reviews, 142(1-4), 157-231. https://doi.org/10.1007/s11214-008-9467-4
McComas, D. J. ; Allegrini, F. ; Baldonado, J. ; Blake, B. ; Brandt, P. C. ; Burch, J. ; Clemmons, J. ; Crain, W. ; Delapp, D. ; DeMajistre, R. ; Everett, D. ; Fahr, H. ; Friesen, L. ; Funsten, H. ; Goldstein, J. ; Gruntman, M. ; Harbaugh, R. ; Harper, R. ; Henkel, H. ; Holmlund, C. ; Lay, G. ; Mabry, D. ; Mitchell, D. ; Nass, U. ; Pollock, C. ; Pope, S. ; Reno, M. ; Ritzau, S. ; Roelof, E. ; Scime, E. ; Sivjee, M. ; Skoug, R. ; Sotirelis, T. S. ; Thomsen, M. ; Urdiales, C. ; Valek, P. ; Viherkanto, Kai ; Weidner, S. ; Ylikorpi, Tomi ; Young, M. ; Zoennchen, J. / The two wide-angle imaging neutral-atom spectrometers (TWINS) NASA mission-of-opportunity. In: Space Science Reviews. 2009 ; Vol. 142, No. 1-4. pp. 157-231.
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abstract = "Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) is a NASA Explorer Mission-of-Opportunity to stereoscopically image the Earth’s magnetosphere for the first time. TWINS extends our understanding of magnetospheric structure and processes by providing simultaneous Energetic Neutral Atom (ENA) imaging from two widely separated locations. TWINS observes ENAs from 1–100 keV with high angular (∼4°×4°) and time (∼1-minute) resolution. The TWINS Ly-α monitor measures the geocoronal hydrogen density to aid in ENA analysis while environmental sensors provide contemporaneous measurements of the local charged particle environments. By imaging ENAs with identical instruments from two widely spaced, high-altitude, high-inclination spacecraft, TWINS enables three-dimensional visualization of the large-scale structures and dynamics within the magnetosphere for the first time. This “instrument paper” documents the TWINS design, construction, calibration, and initial results. Finally, the appendix of this paper describes and documents the Southwest Research Institute (SwRI) instrument calibration facility; this facility was used for all TWINS instrument-level calibrations.",
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McComas, DJ, Allegrini, F, Baldonado, J, Blake, B, Brandt, PC, Burch, J, Clemmons, J, Crain, W, Delapp, D, DeMajistre, R, Everett, D, Fahr, H, Friesen, L, Funsten, H, Goldstein, J, Gruntman, M, Harbaugh, R, Harper, R, Henkel, H, Holmlund, C, Lay, G, Mabry, D, Mitchell, D, Nass, U, Pollock, C, Pope, S, Reno, M, Ritzau, S, Roelof, E, Scime, E, Sivjee, M, Skoug, R, Sotirelis, TS, Thomsen, M, Urdiales, C, Valek, P, Viherkanto, K, Weidner, S, Ylikorpi, T, Young, M & Zoennchen, J 2009, 'The two wide-angle imaging neutral-atom spectrometers (TWINS) NASA mission-of-opportunity', Space Science Reviews, vol. 142, no. 1-4, pp. 157-231. https://doi.org/10.1007/s11214-008-9467-4

The two wide-angle imaging neutral-atom spectrometers (TWINS) NASA mission-of-opportunity. / McComas, D. J. (Corresponding Author); Allegrini, F.; Baldonado, J.; Blake, B.; Brandt, P. C.; Burch, J.; Clemmons, J.; Crain, W.; Delapp, D.; DeMajistre, R.; Everett, D.; Fahr, H.; Friesen, L.; Funsten, H.; Goldstein, J.; Gruntman, M.; Harbaugh, R.; Harper, R.; Henkel, H.; Holmlund, C.; Lay, G.; Mabry, D.; Mitchell, D.; Nass, U.; Pollock, C.; Pope, S.; Reno, M.; Ritzau, S.; Roelof, E.; Scime, E.; Sivjee, M.; Skoug, R.; Sotirelis, T. S.; Thomsen, M.; Urdiales, C.; Valek, P.; Viherkanto, Kai; Weidner, S.; Ylikorpi, Tomi; Young, M.; Zoennchen, J.

In: Space Science Reviews, Vol. 142, No. 1-4, 2009, p. 157-231.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The two wide-angle imaging neutral-atom spectrometers (TWINS) NASA mission-of-opportunity

AU - McComas, D. J.

AU - Allegrini, F.

AU - Baldonado, J.

AU - Blake, B.

AU - Brandt, P. C.

AU - Burch, J.

AU - Clemmons, J.

AU - Crain, W.

AU - Delapp, D.

AU - DeMajistre, R.

AU - Everett, D.

AU - Fahr, H.

AU - Friesen, L.

AU - Funsten, H.

AU - Goldstein, J.

AU - Gruntman, M.

AU - Harbaugh, R.

AU - Harper, R.

AU - Henkel, H.

AU - Holmlund, C.

AU - Lay, G.

AU - Mabry, D.

AU - Mitchell, D.

AU - Nass, U.

AU - Pollock, C.

AU - Pope, S.

AU - Reno, M.

AU - Ritzau, S.

AU - Roelof, E.

AU - Scime, E.

AU - Sivjee, M.

AU - Skoug, R.

AU - Sotirelis, T. S.

AU - Thomsen, M.

AU - Urdiales, C.

AU - Valek, P.

AU - Viherkanto, Kai

AU - Weidner, S.

AU - Ylikorpi, Tomi

AU - Young, M.

AU - Zoennchen, J.

PY - 2009

Y1 - 2009

N2 - Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) is a NASA Explorer Mission-of-Opportunity to stereoscopically image the Earth’s magnetosphere for the first time. TWINS extends our understanding of magnetospheric structure and processes by providing simultaneous Energetic Neutral Atom (ENA) imaging from two widely separated locations. TWINS observes ENAs from 1–100 keV with high angular (∼4°×4°) and time (∼1-minute) resolution. The TWINS Ly-α monitor measures the geocoronal hydrogen density to aid in ENA analysis while environmental sensors provide contemporaneous measurements of the local charged particle environments. By imaging ENAs with identical instruments from two widely spaced, high-altitude, high-inclination spacecraft, TWINS enables three-dimensional visualization of the large-scale structures and dynamics within the magnetosphere for the first time. This “instrument paper” documents the TWINS design, construction, calibration, and initial results. Finally, the appendix of this paper describes and documents the Southwest Research Institute (SwRI) instrument calibration facility; this facility was used for all TWINS instrument-level calibrations.

AB - Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) is a NASA Explorer Mission-of-Opportunity to stereoscopically image the Earth’s magnetosphere for the first time. TWINS extends our understanding of magnetospheric structure and processes by providing simultaneous Energetic Neutral Atom (ENA) imaging from two widely separated locations. TWINS observes ENAs from 1–100 keV with high angular (∼4°×4°) and time (∼1-minute) resolution. The TWINS Ly-α monitor measures the geocoronal hydrogen density to aid in ENA analysis while environmental sensors provide contemporaneous measurements of the local charged particle environments. By imaging ENAs with identical instruments from two widely spaced, high-altitude, high-inclination spacecraft, TWINS enables three-dimensional visualization of the large-scale structures and dynamics within the magnetosphere for the first time. This “instrument paper” documents the TWINS design, construction, calibration, and initial results. Finally, the appendix of this paper describes and documents the Southwest Research Institute (SwRI) instrument calibration facility; this facility was used for all TWINS instrument-level calibrations.

KW - ENA

KW - ENA instrumentation

KW - Energetic neutral atom imaging

KW - Geocorona

KW - Magnetosphere

KW - Space plasma calibration facility

U2 - 10.1007/s11214-008-9467-4

DO - 10.1007/s11214-008-9467-4

M3 - Article

VL - 142

SP - 157

EP - 231

JO - Space Science Reviews

JF - Space Science Reviews

SN - 0038-6308

IS - 1-4

ER -