ELENA (Extra-Low ENergy Antiproton ring) is a
new 10-m-diameter storage synchrotron, which will be installed
as an upgrade to the existing Antiproton Decelerator (AD)
facility of CERN. Presently the AD produces antiprotons in
high-energy collisions of several GeV, and decelerate them to a
kinetic energy of 5.3 MeV. The ELENA ring will further reduce
this minimum energy to 100 keV, while simultaneously
improving the emittance of the beam a hundredfold by
cooling the antiprotons using electron cooling techniques. This
beam will then be ejected from ELENA and transported using
electrostatic beamlines to several experiments. ELENA was
approved for construction in 2011, with first experiments
planned for 2016 (ELENA project website).
The ASACUSA collaboration is now constructing some beam profile monitors and electrostatic beamline elements for prototype tests as part of its contribution to the ELENA project.