title: Allowable aperture size of the front end for the high-heat-load undulator beamlines of SPring-8.
abstract: A systematic study to determinine the allowable aperture size of the front end for the SPring-8 high-heat-load undulator beamlines has been performed, from the viewpoint of protecting the front-end Be window from thermomechanical failure, and based on the results of ANSYS finite-element analyses. These results have revealed that the allowable aperture size of the front end ranges approximately from 1.06 mm(2) to 3.2 mm(2) depending on the K-parameter and the filter thickness.
authors.affiliation: JAERI-RIKEN SPring-8 Project Team, Kamigori, Ako-gun, Hyogo 678-12, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Oura
authors.forename: H
authors.initials: H
authors.lastname: Sakae
authors.forename: Y
authors.initials: Y
authors.lastname: Sakurai
authors.forename: H
authors.initials: H
authors.lastname: Kitamura