Open AccessSPring‐8 twin helical undulator
Author(s) -
Hara T.,
Tanaka T.,
Tanabe T.,
Mare´chal X.M.,
Kumagai K.,
Kitamura H.
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/s0909049597015719
Subject(s) - undulator , spring 8 , physics , magnet , helicity , polarization (electrochemistry) , spring (device) , circular polarization , optics , radiation , chemistry , particle physics , beam (structure) , quantum mechanics , beamline , thermodynamics , microstrip
There are several ways of producing circularly polarized light, such as using asymmetric devices, crossed undulators etc . The SPring‐8 helical undulator introduces a simple way of producing both horizontal and vertical fields in one undulator. All the magnet arrays are arranged above and below the plane of the electron orbit, so there is no limitation of access from the sides of the undulator. For the SPring‐8 BL25SU, two helical undulators will be installed in tandem, and the helicity of the polarization can be switched at up to 10 Hz using five kicker magnets.