The QBA optics for the 3.2 GeV synchrotron light source ROSY II

ROSY, a synchrotron light source dedicated to material research has been proposed to be built at the research Center Rossendorf in the Dresden region of Germany. At a early stage of the project the idea was to build ROSY in two steps: ROSY I as an compact light source and as an injector for ROSY II. ROSY II shall be a high brilliance light source (3rd generation) serving photons with energies up to 30 keV. For the design of ROSY II a modified QBA-lattice was taken. With an energy of 3.2 GeV and a magnetic field of 1.33 T in the bending magnets the critical photon energy is 9.0 keV. With 12 achromats and a circumference of 310 m, the emittance yields 3 nm rad. The dynamic aperture is +/- 10 mm in both directions.<>