• B. Singh, R.T. Fielder, J. Rowland
  Diamond, Oxfordshire
• R. Bartolini, I.P.S. Martin
  JAI, Oxford

Diamond operates with 10 in-vacuum insertion devices at 5 mm gap, two Apple-II, two superconducting and two normal conducting wigglers. We report here the correction of the linear optics of wigglers and measurements of nonlinear effects such as dynamic aperture and frequency maps and their impacts on injection efficiency, lifetime and loss distribution in operation of the storage ring.