Open AccessSPring‐8 BL41XU, a high‐flux macromolecular crystallography beamline
Author(s) -
Hasegawa Kazuya,
Shimizu Nobutaka,
Okumura Hideo,
Mizuno Nobuhiro,
Baba Seiki,
Hirata Kunio,
Takeuchi Tomoyuki,
Yamazaki Hiroshi,
Senba Yasunori,
Ohashi Haruhiko,
Yamamoto Masaki,
Kumasaka Takashi
Publication year - 2013
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/s0909049513022176
Subject(s) - beamline , monochromator , undulator , spring 8 , optics , collimated light , flux (metallurgy) , diffraction , beam (structure) , microbeam , physics , materials science , wavelength , laser , metallurgy
SPring‐8 BL41XU is a high‐flux macromolecular crystallography beamline using an in‐vacuum undulator as a light source. The X‐rays are monochromated by a liquid‐nitrogen‐cooling Si double‐crystal monochromator, and focused by Kirkpatrick–Baez mirror optics. The focused beam size at the sample is 80 µm (H) × 22 µm (V) with a photon flux of 1.1 × 10 13 photons s −1 . A pinhole aperture is used to collimate the beam in the range 10–50 µm. This high‐flux beam with variable size provides opportunities not only for micro‐crystallography but also for data collection effectively making use of crystal volume. The beamline also provides high‐energy X‐rays covering 20.6–35.4 keV which allows ultra‐high‐resolution data to be obtained and anomalous diffraction using the K ‐edge of Xe and I. Upgrade of BL41XU for more rapid and accurate data collection is proceeding. Here, details of BL41XU are given and an outline of the upgrade project is documented.