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BL41XU OUTLINE

Inquiry number

INS-0000000328

ABSTRACT

A macromolecular crystallography beamline BL41XU allows for diffraction experiment by using the photon flux of the 1.7 × 1012 〜 4.3 × 1013 (photons/s@1 Å) which is the highest level in the world. The beamline is mainly used for the structural determination of challenging targets such as membrane proteins and macromolecular complexes which are usually difficult to make well diffracting crystals. Since the beam size can be changed from 2 × 2 µm2 to 35(H) × 50(V) µm2, it can cope with various samples whose size is from a few micrometer to several hundreds micrometer. Another characteristic feature of BL41XU is that it allows for data collection using high energy X-ray from 20 keV to 35 keV.

AREA OF RESEARCH

  • Macromolecular crystallography
  • Ultra-high resolution structure analysis
  • Micro-crystallography

KEYWORDS

  • Scientific field
    Micro-crystallography, Ultra-high resolution structural analysis, High energy X-ray crystallography
  • Equipment
    Hybrid photon counting detector PILATUS3 6M, CMOS flat panel, Sample changer, N2-gas/He-gas cryo-cooler

SOURCE AND OPTICS

The light source of BL41XU is the SPring-8 standard in-vacuum undulator. A liquid –nitrogen-cooled Si double crystal monochromator is used to monochromatize the beam. For the normal mode that covers from 6.5 to17.7 keV the horizontal two step focusing optics consisting of the first horizontal mirror and KB mirror is installed. For the high energy mode that covers from 19 to 35 keV compound refractive lens is used for beam focus.

 Energy (wavelength)   Normal mode: 6.5 - 17.7 keV (1.9 - 0.7 Å)
High energy mode: 19 - 35 keV (0.65 - 0.35 Å)
 Energy resolution   ΔE/E < 2 × 10-4
 Beam divergence   < 1 mrad
 Beam size Normal mode:
 2 × 2 µm2 - 35 (H) µm × 50 (V) µm2
 (routine use: 4(H) × 5(V) µm2 - 22(H) × 45(V) µm2)
High energy mode:
 30 × 30 µm2 - 300 × 300 µm2
 Photon flux Normal mode:
 1.7 × 1012 – 4.3 × 1013 (phs/sec@12.4 keV)
 (routine use: 2.2 × 1012 ~ 1.1 × 1013 (phs/sec) )
High energy mode:
 6.7 × 1011 (phs/sec@30 keV)

Users who wish to use the high-energy mode should contact the beamline scientist before applying for beamtime.

Users who wish to use the beam size and photon flux other than those should contact the beamline scientist before applying for beamtime.

EXPERIMENTAL STATIONS1

EXPERIMENTAL STATIONS2

DETAIL Information

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CONTACT INFORMATION

Please note that each e-mail address is followed by "@spring8.or.jp."

Kazuya HASEGAWA
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0833
Fax : +81-(0)791-58-0830
e-mail : kazuya

Hideo OKUMURA
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0833
Fax : +81-(0)791-58-0830
e-mail : okumurah

Last modified 2016-05-27 13:25
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