Schematic view (not to scale) of the RAD instrument, consisting of three silicon detectors (A, B, C, each having the thickness of 300 μm), a caesium iodide scintillator (D with a height of 28 mm), and a plastic scintillator (E with a height of 18 mm). Both scintillators are surrounded by a plastic anticoincidence (F1 and F2). For detecting charged particles (blue), A, B, C, D, and E are used as a telescope. Neutral particles (both neutrons and gammas, green) are detected in D and E using C, F1, and F2 as anticoincidence. This figure is adapted from Fig. 7 of Köhler et al. (2011) and originally from Fig. 3 of Posner et al. (2005).