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Beam tests of a prototype of the Radiation Hard Electron Monitor to be flown in the JUICE mission

Radiation Hard Electron Monitor (RADEM) is a radiation monitor dedicated to the ESA, Jupiter Icy Moons Explorer (JUICE) space mission. Its purpose, as a part of the JUICE environmental monitor system, is to provide precise information of Jupiter radiation belts such as particle fluxes, energy range, species and directionality. RADEM consists of three independent detector systems: the Proton and Heavy Ion Detector Head (P&HIDH), the Electron Detector Head (EDH), and the Directionality Detector Head (DDH). Each of them has a dedicated, radiation-hard IDE3466 ASIC responsible for the readout. In this paper, we compare the first beam tests results with Geant4 simulations to understand the instrument response and to validate the simulation mass model.