title: An in-vacuum diffractometer for resonant elastic soft x-ray scattering.
abstract: We describe the design, construction, and performance of a 4-circle in-vacuum diffractometer for resonant elastic soft x-ray scattering. The diffractometer, installed on the resonant elastic and inelastic x-ray scattering beamline at the Canadian Light Source, includes 9 in-vacuum motions driven by in-vacuum stepper motors and operates in ultra-high vacuum at base pressure of 2 × 10(-10) Torr. Cooling to a base temperature of 18 K is provided with a closed-cycle cryostat. The diffractometer includes a choice of 3 photon detectors: a photodiode, a channeltron, and a 2D sensitive channelplate detector. Along with variable slit and filter options, these detectors are suitable for studying a wide range of phenomena having both weak and strong diffraction signals. Example measurements of diffraction and reflectivity in Nd-doped (La,Sr)(2)CuO(4) and thin film (Ga,Mn)As are shown.
authors.affiliation: Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
authors.forename: D G
authors.initials: DG
authors.lastname: Hawthorn
authors.forename: F
authors.initials: F
authors.lastname: He
authors.forename: L
authors.initials: L
authors.lastname: Venema
authors.forename: H
authors.initials: H
authors.lastname: Davis
authors.forename: A J
authors.initials: AJ
authors.lastname: Achkar
authors.forename: J
authors.initials: J
authors.lastname: Zhang
authors.forename: R
authors.initials: R
authors.lastname: Sutarto
authors.forename: H
authors.initials: H
authors.lastname: Wadati
authors.forename: A
authors.initials: A
authors.lastname: Radi
authors.forename: T
authors.initials: T
authors.lastname: Wilson
authors.forename: G
authors.initials: G
authors.lastname: Wright
authors.forename: K M
authors.initials: KM
authors.lastname: Shen
authors.forename: J
authors.initials: J
authors.lastname: Geck
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: V
authors.initials: V
authors.lastname: Novák
authors.forename: G A
authors.initials: GA
authors.lastname: Sawatzky