Design of electrostatic 6D phase space detector for keV ions

Abstract

One of the key issues in the field of ion optics is to know the properties of the ion beam: what is the beam energy distribution ($E$), the beam momentum distribution ($p_x$, $p_y$) and how the beam is distributed in the plane ($x$, $y$) perpendicular to the beam direction ($z$). In other words, we want to know what the full 6D phase space of the ion beam is like. In this paper, we present the design and results of the first tests of a fully electrostatic emittance scanner that can determine the 6D phase space of low-energy ion beams of up to 30 keV. The concept of a fully electrostatic 6D emittance scanner presents a robust and much simpler alternative to existing methods.