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Pluto Energetic Particle Spectrometer Science Investigation

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The location of PEPSSI among the seven instruments on NH is pointed to

Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI), is an instrument on the New Horizons space probe to Pluto and beyond, it is designed to measure ions and electrons.[1] Specifically, it is focused on measuring ions escaping from the atmosphere of Pluto during the 2015 flyby.[2] It is one of seven major scientific instruments aboard the spacecraft.[3] The spacecraft was launched in 2006, flewby Jupiter the following year, and went on flyby Pluto in 2015 where PEPSI was able to record and transmit back to Earth the planned data collections.[4][5]

PEPSSI is designed to help understand the rate of atmospheric loss from the atmosphere of Pluto into space, which is thought experience comet-like atmosphere loss into outer space.[6][7] These ions blend in with the surrounding solar wind which passed by Pluto.[8] During the flyby PEPSSI sent data back to Earth every day.[9] During the journey to Pluto, PEPSSI was also used to record data about the interplanetary medium.[10]

Design

PEPPSI is a compact low-power ion measurement device, and it is a time of flight type of instrument[11]

To meet the low power use and weight requirements, the device made use of application-specific integrated circuits (ASICs).[12]

Specifications

Specs:[13]

  • Mass: 2.5 kilograms (5.51 pounds)
  • Power use: ∼2.5 watts
  • Field of view: 160°×12°
  • Ion energy detection range: 20 keV to 1 MeV[14]

See also

References

  1. ^ McNutt, Ralph L.; Livi, Stefano A.; Gurnee, Reid S.; Hill, Matthew E.; Cooper, Kim A.; Andrews, G. Bruce; Keath, Edwin P.; Krimigis, Stamatios M.; Mitchell, Donald G. (2008-10). "The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission". Space Science Reviews. 140 (1–4): 315–385. doi:10.1007/s11214-008-9436-y. ISSN 0038-6308. {{cite journal}}: Check date values in: |date= (help)
  2. ^ Talbert, Tricia (2015-03-25). "Spacecraft and Instruments". NASA. Retrieved 2018-10-20.
  3. ^ Talbert, Tricia (2015-03-25). "Spacecraft and Instruments". NASA. Retrieved 2018-10-20.
  4. ^ [https://www.researchgate.net/publication/253076462_ASICs_for_the_Pluto_Energetic_Particle_Spectrometer_Science_Investigation_on_NASA%27s_New_Horizons_mission_to_Pluto
  5. ^ Gipson, Lillian (2015-07-01). "New Horizons Color Images Reveal Two Distinct Faces of Pluto". NASA. Retrieved 2018-10-20.
  6. ^ L., McNutt, Ralph; E., Hill, Matthew; M., Lisse, Carey; Peter, Kollmann,; Fran, Bagenal,; M., Krimigis, Stamatios; J., McComas, David; A., Elliott, Heather; J., Wolk, Scott (2015-11). "Escape of Pluto's Atmosphere: In Situ Measurements from the Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) instrument on New Horizons and Remote Observations from the Chandra X-ray observatory". 47. {{cite journal}}: Check date values in: |date= (help); Cite journal requires |journal= (help)CS1 maint: extra punctuation (link) CS1 maint: multiple names: authors list (link)
  7. ^ McNutt, Ralph L.; Livi, Stefano A.; Gurnee, Reid S.; Hill, Matthew E.; Cooper, Kim A.; Andrews, G. Bruce; Keath, Edwin P.; Krimigis, Stamatios M.; Mitchell, Donald G. (2008-10). "The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission". Space Science Reviews. 140 (1–4): 315–385. doi:10.1007/s11214-008-9436-y. ISSN 0038-6308. {{cite journal}}: Check date values in: |date= (help)
  8. ^ Gipson, Lillian (2015-07-01). "New Horizons Color Images Reveal Two Distinct Faces of Pluto". NASA. Retrieved 2018-10-20.
  9. ^ [1]
  10. ^ Paschalidis, Nicholas; McNutt, Ralph (2010-01-01). "ASICs for the Pluto Energetic Particle Spectrometer Science Investigation on NASA's New Horizons mission to Pluto". {{cite journal}}: Cite journal requires |journal= (help)
  11. ^ [2]
  12. ^ Paschalidis, Nicholas; McNutt, Ralph (2010-01-01). "ASICs for the Pluto Energetic Particle Spectrometer Science Investigation on NASA's New Horizons mission to Pluto". {{cite journal}}: Cite journal requires |journal= (help)
  13. ^ McNutt, Ralph L.; Livi, Stefano A.; Gurnee, Reid S.; Hill, Matthew E.; Cooper, Kim A.; Andrews, G. Bruce; Keath, Edwin P.; Krimigis, Stamatios M.; Mitchell, Donald G. (2008-10). "The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) on the New Horizons Mission". Space Science Reviews. 140 (1–4): 315–385. doi:10.1007/s11214-008-9436-y. ISSN 0038-6308. {{cite journal}}: Check date values in: |date= (help)
  14. ^ [3]
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