Browsing by Author "Gieseler, Jan"

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    Calibration of RADMON radiation monitor onboard Aalto-1 CubeSat
    (ELSEVIER SCI LTD, 2020-07-01) Oleynik, Philipp; Vainio, Rami; Punkkinen, Arttu; Dudnik, Oleksiy; Gieseler, Jan; Hedman, Hannu Pekka; Hietala, Heli; Hæggström, Edward; Niemelä, Petri; Peltonen, Juhani; Praks, Jaan; Punkkinen, Risto; Säntti, Tero; Valtonen, Eino; University of Turku; NASU - Institute of Radio Astronomy; University of Helsinki; Department of Electronics and Nanoengineering
    RADMON is a small radiation monitor designed and assembled by students of University of Turku and University of Helsinki. It is flown on-board Aalto-1, a 3-unit CubeSat in low Earth orbit at about 500 km altitude. The detector unit of the instrument consists of two detectors, a Si solid-state detector and a CsI(Tl) scintillator, and utilizes the ΔE-E technique to determine the total energy and species of each particle hitting the detector. We present the results of the on-ground and in-flight calibration campaigns of the instrument, as well as the characterization of its response through extensive simulations within the Geant4 framework. The overall energy calibration margin achieved is about 5%. The full instrument response to protons and electrons is presented and the issue of proton contamination of the electron channels is quantified and discussed.