Modeling the response of a top hat electrostatic analyzer in an external magnetic field: Experimental validation with the Juno JADE-E sensor - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Journal of Geophysical Research Space Physics Year : 2016

Modeling the response of a top hat electrostatic analyzer in an external magnetic field: Experimental validation with the Juno JADE-E sensor

G. Clark
  • Function : Author
F. Allegrini
  • Function : Author
D. J. Mccomas
  • Function : Author

Abstract

We investigate the response function of an electrostatic analyzer when electron gyroradii in a magnetic field become comparable to the scale size of the sensor. This occurs when electrons have sufficiently small energies and are in a strong magnetic field. Through simulations and laboratory experiments with the Jovian Auroral Distribution Experiment-Electron (JADE-E) sensor, we observe the energy response, detection angle distribution, and geometric factor to change significantly. Using electro-optics simulation results, we develop semiempirical and empirical relationships that can be used for top hat electrostatic analyzers. We present a model based on these relationships that covers an energy range between 0.1 keV and 5 keV with a uniform external magnetic field magnitude between 0-3 G and verified that these relationships apply to JADE-E in a specially designed testing environment by comparing with the model. We find that the model agrees well with the JADE-E sensor validating it for top hat electrostatic analyzers more generally.
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Dates and versions

insu-03669487 , version 1 (16-05-2022)

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Attribution - NonCommercial - NoDerivatives

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G. Clark, F. Allegrini, D. J. Mccomas, P. Louarn. Modeling the response of a top hat electrostatic analyzer in an external magnetic field: Experimental validation with the Juno JADE-E sensor. Journal of Geophysical Research Space Physics, 2016, 121, pp.5121-5136. ⟨10.1002/2016JA022583⟩. ⟨insu-03669487⟩
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