  Low-energy investigations on rare ion beams are often limited by the
available intensity and purity of the ion species in focus. Here, we present
the first application of a technique that combines in-flight production at
relativistic energies with subsequent secondary beam storage, accumulation and
finally deceleration to the energy of interest. Using the FRS and ESR
facilities at GSI, this scheme was pioneered to provide a secondary beam of
$^{118}$Te$^{52+}$ for the measurement of nuclear proton-capture at energies of
6 and 7 MeV/u. The technique provided stored beam intensities of about $10^6$
ions at high purity and brilliance, representing a major step towards
low-energy nuclear physics studies using rare ion beams.
