Open AccessSpectral properties of the polarizing devices at SRRC
Author(s) -
Wang Ch.,
Chang L. H.,
Lin M. C.,
Chen J.R.
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/s090904959701707x
Subject(s) - undulator , elliptical polarization , polarization (electrochemistry) , optics , storage ring , broadband , physics , synchrotron , materials science , optoelectronics , linear polarization , chemistry , radiation , laser , beam (structure)
User requirements at SRRC for high‐brilliance synchrotron light in various polarization states will be fulfilled in the near future by the implementation of two types of polarizing devices in the storage ring: the elliptically polarizing undulator (EPU) and the elliptically polarized bending magnet (EPBM). The EPBM provides a broadband polarized spectrum up to the soft X‐ray range with rapid alternation of the left and right helicities. The EPU, which has a magnetic period length of 56 mm, generates a high‐brilliance harmonic spectral intensity in the range 80–1400 eV with abundant polarization states, including circular ones. The optimal merit flux is evaluated for the operation of these two polarizing devices in the SRRC 1.5 GeV storage ring. The available polarization states are also surveyed.