High Angular Resolution Electron Detection in the Inner Heliosphere

Details High Angular Resolution Electron Detection in the Inner Heliosphere High Angular Resolution Electron Detection in the Inner Heliosphere

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh33b2066b&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SH33B-2066

Physics

Plasma Physics

[7594] Solar Physics, Astrophysics, And Astronomy / Instruments And Techniques, [7845] Space Plasma Physics / Particle Acceleration, [7894] Space Plasma Physics / Instruments And Techniques

Scientific paper

Measurement of low-energy (<5keV) electron distribution functions in the inner heliosphere is of prime importance for understanding solar wind acceleration and heating processes. Solar Orbiter and Solar Probe Plus missions will provide the high-angular resolution electron measurements which are needed for improving our understanding of the sources of fast and slow solar wind, of the distribution of open and closed magnetic field structures, and of the origin and evolution of electron strahl. We present the main characteristics of the high-angular resolution electron detector that has been developed, prototyped, and tested at LPP for the Solar Orbiter mission. Our detector is using a pixelated anode that is HV coupled to a low power multi-channel hard-rad full custom ASIC that performs charge amplification and discrimination from noise. Using embedded capacitance technology, it provides a generic ultra-compact and low mass solution for high-angular resolution electron measurements in solar system plasmas.

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