Preparation of an Ion Source for an Extra Low Energy Synchrotron

ELENA is a compact ring for cooling and further deceleration of 5.3 MeV antiprotons delivered by the CERN Antiproton Decelerator (AD) down to 100 keV. Because of the long AD cycle of 100 s, it is foreseen to use a source for protons and H⁻ with a kinetic energy of 100 keV for commissioning and start-ups. The source, designed to provide 0.2 to 2.0μsec pulses with 3x10⁷ ions, is based on a proven multicusp volume source used at the COSY/Jülich injector cyclotron. The source and its auxiliaries were refurbished, upgraded to ±100 keV operation at the Forschungszentrum Jülich and have been set in operation at CERN in April 2015 for first tests of new equipments.