[en] A small multi-purpose storage ring (40 m circumference, 2 Tm rigidity) has been constructed at Aarhus University. It is being used as a heavy-ion facility for atomic physics and as a synchrotron-radiation source. Both positive and negative ions can be preaccelerated in an isotope separator and stored in the ring. The ion mode has been operational since the beginning of 1990. The electrons are preaccelerated in a 100 MeV race-track microtron. A maximum current of 132 mA has been accumulated and the first production run for synchrotron radiation will start in summer 1992. (author) 7 refs.; 3 figs