ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A prototype of a high precision rotation system has been designed, built, and tested for a horizontal deflecting mirror for the sector 2 undulator beamline at the Advanced Photon Source. The UHV high heat load mirror, which is the first optical element in the first optics enclosure, diverts undulator white beam to the downstream optics and experimental stations up to 47 meters away. Submicroradian positioning of this deflection arm is essential due to the position accuracy requirements at the experiment station and is accomplished using a differential-style actuator with a frictionless rotation platform mounted externally to the mirror chamber. The differential actuator combines a high gear-ratio mechanical drive with a series of bellows to achieve near-zero-backlash positioning. As a result, submicroradian resolutions are possible without the use of closed-loop controls. This paper presents the mechanical design and specifications of this system and discusses the prototype test results. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1147377
