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Proceedings Paper

First polarization measurements of OPHELIE: a versatile polarization VUV undulator at Super-ACO
Author(s): Christian Alcaraz; Roland Thissen; M. Compin; Antoine Jolly; Markus Drecher; Laurent Nahon
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Paper Abstract

This paper reports on the first characterization of the polarization generated by the crossed overlapped electromagnetic undulator, OPHELIE, of the new high flux/high resolution VUV beamline, SU5, in the Super-ACO storage ring at LURE. The beamline configuration for these tests was reduced after the undulator to a single mirror M1, a TGM monochromator and a multiple-reflection polarimeter. The versatility of polarizations generated by the undulator has been demonstrated around 7 eV by the measurements after the monochromator of highly polarized light either linearly (Ptot greater than 95%) or circularly (Ptot up to 80%). The standard mode of operation which produces a strong vertical linear polarization as well as the other exotic modes like the horizontal and the tilted linear polarizations, the left- and right-handed polarization and the switching between these modes, have been validated for a very large range of photon energies across the undulator spectrum.

Paper Details

Date Published: 16 November 1999
PDF: 12 pages
Proc. SPIE 3773, X-Ray Optics Design, Performance, and Applications, (16 November 1999); doi: 10.1117/12.370097
Show Author Affiliations
Christian Alcaraz, Univ. de Paris-Sud (France)
Roland Thissen, Univ. de Paris-Sud (France)
M. Compin, Univ. de Paris-Sud (France)
Antoine Jolly, Univ. Bielefeld (Germany)
Markus Drecher, Univ. Bielefeld (Germany)
Laurent Nahon, Univ. de Paris-Sud and CEA-Saclay (France)


Published in SPIE Proceedings Vol. 3773:
X-Ray Optics Design, Performance, and Applications
Ali M. Khounsary; Andreas K. Freund; Tetsuya Ishikawa; George Srajer; Jonathan C. Lang, Editor(s)

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