Browsing by Author "Davey, P"

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    Direct current servo motor controlled four‐jaw slits for synchrotron radiation
    (American Institute of Physics, 1994-07-18) Garrett, RF; Cookson, DJ; Davey, P; Janky, S; Wilkins, SW
    A four‐jaw slit assembly and eight‐axis dc servo motor controller have been constructed and are in use at the Australian National Beamline Facility (ANBF) at the Photon Factory. Because of the vacuum operation of the beamline diffractometer, dc servo motors were preferred to stepper motors. Due to the large number of motors to be controlled, commercial dc servo controllers were unsuitable, and an eight‐axis controller was designed to be used in conjunction with the E500 CAMAC stepper motor controller. The system has been in use at the ANBF for about one year, and has allowed the integration of approximately 30 dc servo and stepper motors into a standard control system. © 1995 American Institute of Physics.