Abstract
The High-Energy Particle Detector (HEPD) is a range-calorimeter for the near-Earth measurement of electrons, protons and light nuclei fluxes up to few hundreds of MeV. HEPD will fly on board of the China Seismo-Electromagnetic Satellite (CSES), scheduled to be launched in July/August 2017. This mission will investigate possible correlations between geomagnetic properties (electromagnetic wave emissions, plasma properties and particle fluxes in the ionosphere and magnetosphere) and seismic events. The study of the solar-terrestrial environment, Coronal Mass Ejections (CMEs), Solar Energetic Particles (SEPS) events and low-energy cosmic rays are also within the scientific objectives of this mission. A detailed description of the HEPD and its characteristics will be reported.
Highlights
The China Seismo-Electromagnetic Satellite (CSES) [1] is a space mission dedicated to the monitoring of the electromagnetic (e.m.) perturbations in atmosphere, ionosphere, magnetosphere and Van Allen belts, and to investigate possible correlations with seismic events
There will be several instrument systems on board of CSES: (i) a Tri-Band Beacon and GNSS Occultation Receiver for the study of profile disturbance of plasma; (ii) a Langmuir Probe and Plasma Analyzer for measurements of local plasma disturbances; (iii) a High-Precision Magnetometer, an Electric Field Detector and a Search-Coil Magnetometer for the measurement of electromagnetic field; (iv) a High-Energy Particle Package, which has three components (H, L and X) and measures electrons and protons (20 MeV to 200 MeV) with acceptance of some tens of cm2sr; (v) the High-Energy Particle Detector (HEPD), which is discussed in this article
This included the study of trapped, albedo and solar energetic particles [4], of Solar energetic particles (SEPs) events [5] and the discovery of anomalously high fluxes of trapped anti-protons [6] in the kinetic energy range between 60 and 750 MeV
Summary
The China Seismo-Electromagnetic Satellite (CSES) [1] is a space mission dedicated to the monitoring of the electromagnetic (e.m.) perturbations in atmosphere, ionosphere, magnetosphere and Van Allen belts, and to investigate possible correlations with seismic events. The satellite is based on the Chinese CAST2000 platform It is a 3-axis attitude stabilized satellite and will be placed in a 98 degrees inclination Sun-synchronous circular orbit, at an altitude of 500 km. The HEPD detector can perform measurements of not-trapped low-energy charged particles up to few hundreds of MeV. This allows the study of several topics related to the solarterrestrial environment and the lower end of the cosmic-ray spectrum
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