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TY - UNPB AU - Beiser, Th. AU - Aulenbacher, K. AU - Bruker, M.W. AU - Weilbach, T. ED - Schaa, Volker RW ED - Marx, Michaela ED - Tilmont, Manuel TI - Secondary Electron and Photon Measurements at the HIM Electron Cooler Test Set-Up J2 - Proc. of COOL2017, Bonn, Germany, 18-22 September 2017 C1 - Bonn, Germany T2 - Workshop on Beam Cooling and Related Topics T3 - 11 LA - english AB - A low-energy test set-up for the measurement and optimisation of secondary electron currents from the collector in electron coolers is presented. A variable-field Wien filter and current-measuring aperture plates grant insight into the trajectory and energy distribution of the secondary particles. Photons emitted by residual gas ions trapped inside the electromagnetic potential of the electron beam can be used to measure the location of the beam. The exact composition of those ions, the optical spectrum of said photons, and the possibility of related beam diagnostics is a subject of ongoing research. PB - JACoW CP - Geneva, Switzerland ER -