BNL, Upton, Long Island, New York
We shall discuss the conceptual design of the 3 GeV storage ring (NSLS-II) proposed to serve as a high-brightness source of X-rays at Brookhaven National Laboratory. The lattice is a 32-period double bend achromat (DBA) with damping wigglers used to produce an electron beam emittance below 1 nm. Specially designed insertions are provided for the use of small-gap short-period undulators. Both superconducting and in-vacuum permanent magnet insertion devices are envisioned. Our discussion will emphasize the key accelerator physics issues which limit the achievable source brightness.
