A possible approach to reduce the emittance of HLS- storage ring using a Robinson wiggler

In this paper,we present some preliminary studies on using a Robinson wiggler to reduce the horizontal beam emittance in the Hefei Light Source(HLS-) storage ring. A proof-of-principle lattice demonstrates that it is possible to reduce its emittance by 50% with a 2-meter long wiggler. This encouraging result suggests a feasible option to significantly improve the machine performance at a relatively low cost.