title: Galvanometer deflection: a precision high-speed system.
abstract: An X-Y galvanometer deflection system capable of high precision in a random access mode of operation is described. Beam positional information in digitized form is obtained by employing a Ronchi grating with a sophisticated optical detection scheme. This information is used in a control interface to locate the beam to the required precision. The system is characterized by high accuracy at maximum speed and is designed for operation in a variable environment, with particular attention placed on thermal insensitivity.
authors.forename: D P
authors.initials: DP
authors.lastname: Jablonowski
authors.forename: J
authors.initials: J
authors.lastname: Raamot