Abstract
An electrostatic storage ring with a circumference of 8.1 m was designed for the research of atomic and molecular science. The race-track ring consists of two 160° deflectors, four 10° deflectors and four quadrupole doublets. For the 160° deflectors, a cylindrical shape has been adopted. In this ring, there are four types of stable regions with and without waists of the beam envelope in the middle of the deflectors. A beam test was performed with 20-keV ion beams from an ECR ion source. The observed lifetimes of beams stored in each stable region were different under the same conditions, except for the tune values. The lifetimes did not depend much on the injected beam intensity for a current of less than about 100 nA. The design and performance of the electrostatic storage ring are presented.
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