Fig. 2From: Low-energy particle experiments–ion mass analyzer (LEPi) onboard the ERG (Arase) satelliteChannel definition of LEPi. LEPi has a planar FOV in the \({Y}_{\text{ sc }}{Z}_{\text{ sc }}\) plane. Illustrated direction corresponds to the velocity direction of the incoming particles. Channels 0–8, and e are wide channels, while channels 9–d are narrow channels. The positions of the center of the anodes in the satellite frame of reference are shown in parenthesesBack to article page