“…They have already demonstrated their capabilities of determining the charge and energy of high-energy cosmic rays for the proton to iron elemental range with excellent resolution [6]. In addition, the Top and Bottom Counting Detectors (TCD/BCD) located above and below the CAL, respectively, help electron measurements by using different shower profiles to distinguish electrons from protons [7,8]. They also provide a low energy trigger while the CAL provides a high energy trigger.…”