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

    91 Citations (Scopus)

    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 -