First polarization measurements of OPHELIE: a versatile polarization VUV undulator at Super-ACO

Christian Alcaraz; Roland Thissen; M. Compin; Antoine Jolly; Markus Drecher; Laurent Nahon

doi:10.1117/12.370097

16 November 1999 First polarization measurements of OPHELIE: a versatile polarization VUV undulator at Super-ACO

Christian Alcaraz, Roland Thissen, M. Compin, Antoine Jolly, Markus Drecher, Laurent Nahon

Proceedings Volume 3773, X-Ray Optics Design, Performance, and Applications; (1999) https://doi.org/10.1117/12.370097
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

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 (P_tot greater than 95%) or circularly (P_tot 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.

Citation Download Citation

Christian Alcaraz, Roland Thissen, M. Compin, Antoine Jolly, Markus Drecher, and Laurent Nahon "First polarization measurements of OPHELIE: a versatile polarization VUV undulator at Super-ACO", Proc. SPIE 3773, X-Ray Optics Design, Performance, and Applications, (16 November 1999); https://doi.org/10.1117/12.370097

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