2. 2 Jun 2022 Jan 2030 Sep 2032 Jun 2033 11 months 1 month 9 months 11 months 9 months Launch Ariane-5 Jupiter orbit insertion Transfer to Callisto Europa phase: 2 Europa + 2 Callisto flybys Jupiter High Latitude Phase Transfer to Callisto Ganymede Orbit insertion Ganymede tour: Orbits at several altitudes: High altitude 500 km 200km End of nominal mission Next Class-L (Large) ESA Mission

3. Europa Ganymede Callisto 3

4. 4 Extra Solar Planetary Systems The Plasma Universe PlanetaryAtmospheres

5. 5 Possible configuration for Scientific Payload accomodation

6. 6

7. 7 Courtesy of H.B.Garret, Jet Prop.Lab Synchrotron emission observations Synchrotron emission predictions from Divine model

8. 8 40 MeV 300 keV

9. 9 1RadiationHousekeeping 2 Alert and safeguarding 3 Support to platform and payload 4 Future mission preparation & provision of science data

10. 10 Phase A RADEM Model (PSI)

11. 11

12. 12 Proton Telescope 8 Si layers, 8mm Copper shielding) Electron Spectrometer permanent magnet Credits to Wojtek Hadjas & Laurent Desorgher (PSI) @ ESA Space Radiation Workshop, May 2012

13. 13 Ganymede Flyby DATA: EPD measurements Galileo G29 encounter with Ganymede December 2000

14. 14 31 Si sensors (300 μm)  = 22.5 o,  φ = 36 o & FOV= 7.2 o Shielding: 8 mm Copper to electrons with E < 10 MeV stop electrons with E < 10 MeV 300 μm Al absorber stops e- with E < 300 keV & protons with E< 6 MeV e- with E < 300 keV & protons with E< 6 MeV y z x y

15. 15 θ e- Primary Electron Incident angle θ (deg) 300keV- 10 MeV Electrons > 10 MeV

16. 16 300keV- 10 MeV electrons Primary Electron Incident angle θ vs ϕ (deg) 300keV- 10 MeV Electrons Primary Electron Incident angle θ (deg) vs Kinetic Energy (MeV))

17. 17

18. 18

19. 19

20. 20 The exploration of the Jovian System is an engineering & scientific challenge RADEM will be ESA “small” tool to study the Energetic Particle Environment of a giant and complex magnetosphere

21. 21

22. 22

23. 23

24. 24

26. 26

27. 27 Deposited Energy vs. Primary Electron Kinetic Energy (MeV)

28. 28

29. 29

30. Europa Ganymede Callisto Io Jupiter 30 Ice layer. Thickness? Liquid water? Surface and Subsurface composition Geology Loc environment Interaction with JM Ice layer. Thickness? Liquid water? a cold rigid ice crust, an outer warm ice mantle, an inner silicate mantle, and a metallic core

31. 31

32. 32 Model of Callisto's internal structure showing a surface ice layer, a possible liquid water layer, and an ice-rock interior

33. 33 Model of Europa's interior showing a solid ice crust over a layer of liquid water or soft ice, a silicate mantle and a metallic core.

34. 34

35. 35 Worst case integral electron flux spectra for worst averaged over 24 h and 20 min. Earth - GEO Jupiter - JUICE Electron Flux #/(cm 2.sr.s) 0.2 MeV5 MeV Jupiter -JUICE~5 x E+7~5 x E+5 Earth - GEO1 x E+7 /4π1 x E+1 /4π

36. 36

37. 37

38. 38