title: SB7: the new bending-magnet double-headed dragon beamline at SuperACO.
abstract: A new beamline is now operational at LURE on bending-magnet 7 of the SuperACO storage ring in Orsay. The monochromator is of the ;dragon' type, designed to work in the energy range 150-1500 eV, and is equipped with a double vertical focusing mirror in order to allow for fast switching of light polarization. In this paper the results of photoion-yield experiments performed on N(2), Ar and Ne gases are presented. The observed resonance structures enable us to determine the available energy resolution: a resolving power higher than 8500 is obtained at the Ar 2p, N 1s and Ne K-edges when using all the optical elements at full aperture. The total flux as a function of the measured photon energy resolution and the characterization of the double-head behaviour in delivering circularly polarized light are reported.
authors.affiliation: Laboratoire pour l'Utilisation du Rayonnement Electromagnetique, CNRS, CEA, MESR, BP34, F-91485 Orsay, France. sirotti@lure.u-psud.fr
authors.forename: F
authors.initials: F
authors.lastname: Sirotti
authors.forename: F
authors.initials: F
authors.lastname: Polack
authors.forename: J L
authors.initials: JL
authors.lastname: Cantin
authors.forename: M
authors.initials: M
authors.lastname: Sacchi
authors.forename: R
authors.initials: R
authors.lastname: Delaunay
authors.forename: M
authors.initials: M
authors.lastname: Meyer
authors.forename: M
authors.initials: M
authors.lastname: Liberati