title: Electronics for SPring-8 X-ray beam monitors.
abstract: A sensitive current-measuring system is required to construct a highly sensitive X-ray beam-position monitor (XBPM). A current-voltage converter (I/V) which can measure currents between 0.1 nA and 10 mA was designed, and the signal processing system of the XBPM was constucted using this I/V. This system was used in beamline commissioning. Beam-position data standard deviations of sigma approximately 3 micro m for the bending-magnet beamline, and sigma(x) approximately 3 micro m and sigma(y) approximately 1 micro m for the insertion-device beamline were obtained during the beamline commissioning.
authors.affiliation: SPring-8, Kamigori, Ako-gun, Hyogo 678-12, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kudo
authors.forename: H
authors.initials: H
authors.lastname: Aoyagi
authors.forename: H
authors.initials: H
authors.lastname: Shiwaku
authors.forename: Y
authors.initials: Y
authors.lastname: Sakurai
authors.forename: H
authors.initials: H
authors.lastname: Kitamura