Open AccessOPHÉLIE: a variable‐polarization electromagnetic undulator optimized for a VUV beamline at Super‐ACO
Author(s) -
Nahon L.,
Corlier M.,
Peaupardin P.,
Marteau F.,
Marcouillé O.,
Alcaraz C.
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049597013022
Subject(s) - undulator , polarization (electrochemistry) , physics , beamline , planar , electromagnet , optics , translational motion , magnetic field , magnet , radiation , chemistry , classical mechanics , computer science , quantum mechanics , beam (structure) , computer graphics (images)
A planar/helical crossed overlapped undulator, called OPHÉLIE, is presented, composed of two identical ten‐period (each 25 cm long) crossed undulators whose magnetic fields are produced by electromagnets. Such a design is quite simple, with only one mechanical translational motion, and versatile. After the presentation of the general concept of the crossed undulator and of its actual magnetic design, the expected performances in terms of flux and polarization capabilities are described. It appears that any state of polarization can be produced, at least on the first harmonic, with a large total polarization rate and a potentially high polarization switching frequency.