Speaker
Description
A pulsed electron lens is being developed at GSI for space charge compensation, but direct time-resolved diagnostics of the electron beam remain challenging because of the high beam power. Additionally, the electron beam will be modulated. The presented concept makes use of an additively manufactured fast Faraday cup for the temporal characterization of the electron beam. Due to geometric restrictions the geometric footprint shall be reduced by e.g., bending the coaxial design. Furthermore, operational capability through cooling of both the chassis and the inner conductor is aimed for. Another objective is to investigate whether the very rough surfaces typical of additive manufacturing can lower secondary electron yield and thereby help to mitigate an electron backflow. The work aims to establish a compact diagnostic concept for demanding pulsed low keV electron-beam environments.