A Small Deceleration Ring for Extra Low Energy Antiprotons (ELENA)
A small ring which allows deceleration of antiprotons coming from LEAR down to 200 keV is presented. The phase-space blow-up during deceleration is compensated by electron cooling. Final beam dimensions are limited by intra-beam scattering. Depending on the number of decelerated antiprotons, the 200 keV antiproton beam will have at least the same emittance and momentum spread as the 5 MeV LEAR beam.
KeywordsStraight Section Electron Cool Momentum Spread Antiproton Beam Revolution Frequency
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