title: A plane-grating monochromator beamline for the PTB undulators at BESSY II.
abstract: At the BESSY II storage ring, the Physikalisch-Technische Bundesanstalt (PTB) will operate insertion devices dedicated to radiometric use. One branch of the appendant beamline system will be equipped with a grazing-incidence monochromator, described here. The monochromator concept is based on a plane grating operated in parallel light; therefore exact focusing is maintained for all photon energies irrespective of the angular setting at the grating. The monochromator has been optimized for small higher-order transmittance and high power throughput, as required by radiometric applications in the wide photon energy range from 20 eV to 1900 eV.
authors.affiliation: BESSY GmbH, Lentzeallee 100, 14195 Berlin, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Senf
authors.forename: U
authors.initials: U
authors.lastname: Flechsig
authors.forename: F
authors.initials: F
authors.lastname: Eggenstein
authors.forename: W
authors.initials: W
authors.lastname: Gudat
authors.forename: R
authors.initials: R
authors.lastname: Klein
authors.forename: H
authors.initials: H
authors.lastname: Rabus
authors.forename: G
authors.initials: G
authors.lastname: Ulm