Measurement by FIB on the ISS: Two Emissions of Solar Neutrons Detected?

Figure 2

Schematic view of the FIB detector’s sensor. One layer consists of 16 plastic scintillator bars with dimensions of 3 mm (height) × 6 mm (width) × 96 mm (length). The direction of the Sun is identified by tracking two layers of the scintillator in both 𝑥 and 𝑦 directions; the energy of neutrons is measured by the range of protons.