CAS - CERN Accelerator School: Intermediate Accelerator Physics: Zeuthen, Germany 15 - 26 Sep 2003

This contribution describes the transverse dynamics of particles in a synchrotron. It builds on other contributions to the General Accelerator School for definitions of transport matrices and lattice functions. After a discussion of the conservation laws which govern emittance, the effects of closed orbit distortion and other field errors are treated. A number of practical methods of measuring the transverse behaviour of particles are outlined.