Calibration of RADMON radiation monitor onboard Aalto-1 CubeSat

Philipp Oleynik*, Rami Vainio, Arttu Punkkinen, Oleksiy Dudnik, Jan Gieseler, Hannu Pekka Hedman, Heli Hietala, Edward Hæggström, Petri Niemelä, Juhani Peltonen, Jaan Praks, Risto Punkkinen, Tero Säntti, Eino Valtonen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
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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.

Original languageEnglish
Pages (from-to)42-51
Number of pages10
JournalAdvances in Space Research
Issue number1
Early online date2 Dec 2019
Publication statusPublished - 1 Jul 2020
MoE publication typeA1 Journal article-refereed


  • CubeSats
  • Electron precipitation
  • Radiation belts
  • Solar energetic particles


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