title: Method of measuring the coupled lattice functions at the interaction point in e+e- storage rings.
abstract: We have investigated a method of measuring the complete lattice functions including the coupling parameters at any azimuthal position in a periodic and symplectic system. In particular, the method is applied to measure the lattice functions at the interaction point where the beams collide. It has been demonstrated that a complete set of lattice functions can be accurately measured with two adjacent beam position monitors and the known transformation matrix between them. As a by-product, the method also automatically measures the complete one-turn matrix.
authors.affiliation: Stanford Linear Accelerator Center, Menlo Park, California 94025, USA.
authors.forename: Yunhai
authors.initials: Y
authors.lastname: Cai