A design for an electromagnetic filter for precision energy measurements at the tritium endpoint. - Betti, M.G.; Biasotti, M.; Boscá, A.; Calle, F.; Carabe-Lopez, J.; Cavoto, G.; Chang, C.; Chung, W.; Cocco, A.G.; Colijn, A.P.; Conrad, J.; D'Ambrosio, N.; et al. (Progress in Particle & Nuclear Physics, 2019)