Greifswald 2009 – scientific programme
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EP: Fachverband Extraterrestrische Physik
EP 11: Planets and Small Bodies II
EP 11.5: Talk
Thursday, April 2, 2009, 14:30–14:45, HS-Ost Pharmazie
The Ionizing Radiation Sensors (IRAS) for ESA's ExoMars Mission — •Shrinivasrao R. Kulkarni1, Robert F. Wimmer-Schweingruber1, Stephan Boettcher1, Soenke Burmeister1, Bent Ehresmann1, Jan Koehler1, Lars Seimetz1, Bjoern Schuster1, Guenther Reitz2, Thomas Berger2, Andrea M. Di Lellis3, and Costanzo Federico4 — 1IEAP, University of Kiel, Leibnizstr. 11, 24118, Kiel, Germany — 2German Aerospace Center, Institute of Aerospace Medicine, 51147 Cologne, Germany — 3AMDL, Srl, Viale Somalia 133, 00199 Roma, Italy — 4Dipartimento di Scienza della Terra, Universita' degli Studi di Perugia, 06100 Perugia, Italy
The Ionizing Radiation Sensor (IRAS) on ESA's ExoMars mission shall characterize the ionizing radiation environment at the Martian surface. Its development is being led by the German Aerospace Center (DLR) in Cologne. It will measure the particle count rate, radiation dose rate, and LET(Si) spectra. Thus will allow us to estimate the corresponding LET(H2O) spectra. IRAS shall also allow operation during the night time to characterize the night-time radiation environment. The strict mass and power requirements placed on the ExoMars payload drove the design of this extremely light-weight instrument. Nevertheless, it has a high detection efficiency for charged particles and also allows us to estimate the contribution to total dose by the neutral radiation component, neutrons and gamma rays. Currently, we are developing the IRAS instrument to satisfy all the science requirements and preparing first tests with prototype models. Here, we will present initial results of this development of the IRAS instrument.