1. NSLS-II Seminar

    "Design of a 5BA Low Emittance Lattice for Sirius"

    Presented by Liu Lin, Brazilian Synchrotron Light Source

    Friday, June 21, 2013, 2 pm
    Seminar Room, Bldg. 725

    Hosted by: Dr. Ferdinand Willeke

    In this talk we will present the lattice design issues of the new Brazilian synchrotron light source project Sirius currently under construction at the Brazilian Synchrotron Light Laboratory (LNLS) in Campinas, São Paulo. The Sirius lattice was recently revised to achieve a lower emittance. The new design is based on a 3 GeV, 5BA achromatic lattice with 0.28 nm.rad natural emittance without wigglers. The circumference is 518 m with 20 straight sections of alternating 6 and 7 meters in length. The dipoles will combine low field magnets (0.58 T) for the main beam deflection with a short 2 Tesla high field slice magnet (superbend) integrated in the center dipole. This will produce a longitudinal dipole gradient that is used to lower the emittance as well as to provide hard x-ray (12 keV critical energy) dipole sources with a modest total energy loss.