Speaker
Description
Particle accelerators enable scientists to probe deeper into nuclei to extract key observables to validate or improve our nuclear theoretical frameworks. A fundamental quantity is the precise measurement of the nuclear charge radius. Electron scattering is the best tool to probe such quantity, with laser spectroscopy being a highly precise complementary technique that extends the reach to unstable isotopes. However, the latter requires known reference radii. The SCRIT facility (RIKEN, Japan) is the only one in operation that can scatter electrons off rare isotopes. The Facility for Rare Isotope Beams (Michigan, USA) has opened an uncharted window in the nuclear landscape from the proton to neutron driplines. Technological breakthroughs in accelerators, e.g. C-beta magnets and cold copper cavities, allow building relatively low costs high energy, high current compact machines. Two prototypes are being studied to be coupled with an ion trap: one is a compact linac to deliver (un)polarized electron, positron and photon beams and the other is a laser system to perform laser spectroscopy on the same isotopes. This dual system will provide the foundation for a possible Advanced Rare-isotope Electron Scattering (ARES) facility in the U.S. A review of the status for this effort will be discussed.
