SREM testing at REEF and open issues on electron calibration in Europe
Menicucci, A.¹; Evans, H.¹; Santin, G.¹; Rodgers, D.¹; Morris, P.²; Ryden, K.^2
1ESA; ²QinetiQ

In view of the Galileo programme, an accurate calibration with electrons sources of radiation monitors flying on-board of the constellation satellites is of high importance for reliable modelling of the MEO radiation environment. Irradiation tests on three instruments onboard of the two test satellites Giove-A and Giove-B have been carried out at REEF (Realistic Electron Exposure Facility), a high activity Strontium-90 radioactive source located in QinetiQ (UK). As part of this programme, also the ESA Standard Environment Radiation Monitor has been calibrated at REEF. The test results and the comparison with the simulation of the test set-up performed with GRAS (Geant4 Radiation Analysis for Space) will be presented as well as a discussion on open issues on radiation monitor electron calibration in Europe.