JEDI

[2] JEDI consists of three identical detectors that use microchannel plates and foil layers to detect the energy, angle, and types of ion within a certain range.

The instruments also use fast triple coincidence and optimum shielding to suppress penetrating background radiation and incoming UV foreground.

[8] It is radiation-hardened to collect in situ data on the planet's auroral magnetic field lines, the equatorial magnetosphere, and the polar ionosphere.

[13] JEDI, in combination with data from the Ultraviolet Spectrometer, detected electrical potentials of 400,000 electron volts (400 keV), 20–30 times higher than Earth, driving charged particles into the polar regions of Jupiter.

[14] A scientific paper titled Juno observations of energetic charged particles over Jupiter's polar regions: Analysis of monodirectional and bidirectional electron beams included results from a close pass over Jupiter's poles in August 2016 for electrons (25–800 keV) and protons (10–1500 keV).