Five voltage probes V1–V5 measure the local plasma potential and can be combined to produce two components of the DC electric field and the fluctuating fields of the third component. ![]() SPP will launch in mid 2018 and begin making science measurements of the inner heliosphere a few months later.įIELDS will measure the 3-component magnetic field of the corona from ‘DC’ to beyond the electron cyclotron frequency, to fully characterize magnetized plasma waves and to map out the coronal magnetic field and its connection to the Sun. The overall science goals and mission definition are described in Fox et al. Together, these instruments will measure the plasma, fields, and energetic particle environment of the inner heliosphere to solve the fundamental problem of corona heating and the relationship to the coronal magnetic field. ![]() 2016), and the Wide-field Imager for Solar Probe Plus (WISPR) ( Vourlidas et al. 2016), the Integrated Science Investigation of the Sun (IS⊙IS) ( Mccomas et al. ![]() FIELDS is one of four selected instrument suites, including the Solar Wind Electron Alpha and Protons investigation (SWEAP) ( Kasper et al. ![]() The FIELDS instrument on the NASA Solar Probe Plus (SPP) mission is a suite of instruments designed to measure DC and fluctuation magnetic and electric fields, plasma wave spectra and polarization properties, the spacecraft floating potential, and solar radio emissions.
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