Zouros TJM, Kanellakopoulos A, Madesis I, Dimitriou A, Fernandez-Martin M, Martinez G, Mertzimekis TJ. The Optimization of a 4-Element Input Lens on a Hemispherical Deflector Analyzer Using SIMION. In: Ninth International Conference on Charged Particle Optics. Vol. 21(S4). ; 2015. pp. 148.