Design Study of a New Miniaturized Radiation Monitor Based on Previous Experience with the Space Application of the Timepix Radiation Monitor (SATRAM)

Funded by the European Space Agency, a miniaturized radiation monitor (MIRAM) is being developed in collaboration of the Institute for Experimental and Applied Physics, Czech Technical University in Prague and ADVACAM s.r.o. in Prague. Within a small, low power consumption and inexpensive unit, this tool provides measurement of the deposited dose and flux estimation for electrons and protons separately to the spacecraft it is attached to. The planned device will integrate a direct-converting pixel detector of the Timepix family (300-1000 μm thick sensor, 256 x 256 pixels, pixel pitch 55 μm), combined with four diodes, providing low power mode and coincidence measurements. Presented are the strategy for the particle-type identification and results from simulations of the detector response for electrons and protons. The strategy and design are based on the experience gained from the investigation of the data received from the Space Application of the Timepix Radiation Monitor (SATRAM) within the last five years. The proficiency of both is analysed using data from MC simulations in Geant4.