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Description
Radiation-Hard Electron Monitor (RADEM) is an instrument developed for ESA JUICE mission. It consists of four detector subsystems: Electron Stack Detector (ESD), Proton Stack Detector (PSD), Heavy Ion Stack Detector (HISD) and Directional Detector (DD). The instrument is designed to provide quasi logarithmic spectra of electrons and protons as well as an angular distribution of electrons. HISD allows for measurement and discrimination of ions from Helium to Oxygen. The energy ranges are 0.3 - 40 MeV for ESD and 5 - 250 MeV for PSD. RADEM is equipped with radiation hard ASIC VATA466 and enables measurements of particle fluxes up to 10$^9$ /cm$^2$/s. The instrument itself is very compact with a total mass of 1.9 kg and 1 dm$^3$ volume. The total power is equal to 3.2 W. RADEM will start operation already during the cruise part of the JUICE S/C providing information on the Cosmic Ray fluxes across the Solar System. Its modular structure and specially designed readout ASIC allow for tailored adaptation in other projects with radiation monitors such as e.g. ESA planned LGR mission.
