title: Performance upgrade in the JAEA actinide science beamline BL23SU at SPring-8 with a new twin-helical undulator.
abstract: The soft X-ray beamline BL23SU at SPring-8 has undergone an upgrade with a twin-helical undulator of in-vacuum type to enhance the experimental capabilities of the endstations. The new light source with a fast helicity-switching operation allows not only the data throughput but also the sensitivity in X-ray magnetic circular dichroism (XMCD) to be improved. The operational performance and potential are described by presenting XMCD results of paramagnetic β-US(2) measured with a 10 T superconducting magnet.
authors.affiliation: Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan. ysaitoh@spring8.or.jp
authors.forename: Yuji
authors.initials: Y
authors.lastname: Saitoh
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Fukuda
authors.forename: Yukiharu
authors.initials: Y
authors.lastname: Takeda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yamagami
authors.forename: Sunao
authors.initials: S
authors.lastname: Takahashi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Asano
authors.forename: Toru
authors.initials: T
authors.lastname: Hara
authors.forename: Katsutoshi
authors.initials: K
authors.lastname: Shirasawa
authors.forename: Masao
authors.initials: M
authors.lastname: Takeuchi
authors.forename: Takashi
authors.initials: T
authors.lastname: Tanaka
authors.forename: Hideo
authors.initials: H
authors.lastname: Kitamura