Table 1.
Energy thresholds of the MEPED proton detector (SEM-2).
| Channel | Nominal energy range of protons (keV) |
|---|---|
| P1 | 30–80 |
| P2 | 80–250a |
| P3 | 250a–800 |
| P4 | 800–2500 |
| P5 | 2500–6900 |
| P6 | >6900b |
We use 250 keV (Yando et al. 2011), as also used by Sandanger et al. (2015). The description of the instrument reports 240 keV (Evans & Greer 2000).
According to simulations by Yando et al. (2011), P6 can measure protons with energy of at least 10 MeV. It is also sensitive to relativistic electrons.
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