The SCRIT (Self-Confining Radioactive-Isotope Ion Target) electron scattering
facility has been constructed at the
RIKEN RI Beam Factory.
In the commissioning experiment,
the ion-trapping properties of the SCRIT system were studied
using stable ions. By using an electron spectrometer,
the momentum transfer distribution of the electron elastic
scattering of $^{132}$Xe was measured at 150, 200, and 300~MeV,
and the charge density distribution was deduced.
During the measurements,
a luminosity of
$1.8 \times$10$^{27}$~cm$^{-2}$s$^{-1}$
was achieved with a 250-mA electron beam and only 10$^8$ trapped ions.
Production of RIs has begun in an electron-beam-driven RI
separator, and developments are underway to
increase the production rate of short-lived nuclei.
Soon, measurements of electron elastic scattering by
short-lived nuclei will be performed.