CERN - European Organization for Nuclear Research
Generation of Cold Electrons for an eV Electron Cooler
Trainee: Bruno Galante
Supervisor: Gerard Tranquille
Electron cooling of the antiproton beam is essential to reduce or eliminate any emittance growth caused by the deceleration process. An antiproton beam with a small emittance will be needed for further deceleration and extraction to the trap experiments.
Different options for a cold electron source are under investigation, including expected performance and limitations, to improve the understanding of cold electron beam generation.
This project involved simulations into the electron source performance, as well as experimental studies for a full characterization of the emitted electron beam. One novel material called carbon nanotubes (CNTs), known for its ability to reach low field emissions, was optimized and investigated for durability to develop a suitable alternative source for cold electrons. Improved electron cooling will help to increase the number of available antiprotons for further studies and experiments.