title: Numerical simulation of gridded electrostatic lens.
abstract: Gridded electrostatic lenses are frequently used in extraction systems and low energy ion beam transport line. Typically, for numerical simulation the grid is treated as a metal plate transparent for beam particles. The influence of real grid geometry on the beam dynamics in the gridded lens has been investigated by KOBRA-3d code. Beam emittance growth for different lens parameters has been investigated. Approximating expressions for obtained results are presented. The grid geometry providing minimal beam distortions is proposed.
authors.affiliation: Institute for Theoretical and Experimental Physics, Moscow, Russia.
authors.forename: G N
authors.initials: GN
authors.lastname: Kropachev
authors.forename: N N
authors.initials: NN
authors.lastname: Alexeev
authors.forename: A I
authors.initials: AI
authors.lastname: Balabin
authors.forename: T V
authors.initials: TV
authors.lastname: Kulevoy
authors.forename: V I
authors.initials: VI
authors.lastname: Nikolaev