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BL03 iBIX IBARAKI Biological Crystal Diffractometer


Observation of Hydrogen and hydration structure of macromolecules and organic compounds with high measurement efficiency and high resolution

Research ObjectivesElucidation of the function of proteins and chemical reaction contributed by hydrogen and hydration structures.
FeaturesTo identify hydrogen atoms which is difficult to be accomplished by X-ray. Diffraction data can be obtained from a crystal as small as for laboratory X-ray source.

Hydrogen atoms and water molecules around proteins play a very important role in the stability of the three-dimensional structure and in many physiological functions of them. The IBARAKI biological crystal diffractometer called iBIX which is a high-performance time-of-flight single-crystal neutron diffractometer was constructed at the BL03 of MLF/J-PARC, for mainly elucidating of the hydrogen, protonation and hydration structures of biological macromolecules and organic compound in various life processes.


Last Update: 2014-10-24

InstrumentIBARAKI Biological Crystal Diffractometer (iBIX)
Overview of instrumentCollection of pulsed neutron diffraction data from a single crystal to obtain the precise organic and protein structure.
ModeratorCoupled moderator
Range of d-spacing0.35 - 50 Å
Resolution (Specified unit cell dimension amax @minimum d-space dmin)amax = 135 Å
@dmin = 1.2 Å
Neutron intensity (@sample position @1MW)7.0×107 n/s/cm2
Sample size and/or volume
  • 10 days are necessary for a 5mm3 protein crystal
  • 6 days are necessary for a 2mm3 organic crystal
Another important condition for protein crystals: All cell dimensions should be less than 100Å, although one cell edge dimension up to 200Å is acceptable.
(Calculation conditions: 14 detectors and 200kW of accelerator power)
Ancillary equipment and sample environmentLow temperature gas (N2,He) flow equipment
Other information for user's convenienceNone

Beamline Team

ContactKatsuhiro KUSAKA (Frontier Research Center for Applied Atomic Sciences, Ibaraki University)
Secondary contactTaro YAMADA (Frontier Research Center for Applied Atomic Sciences, Ibaraki University)
Naomine YANO (Frontier Research Center for Applied Atomic Sciences, Ibaraki University)
Ichiro TANAKA (College of Engineering, Ibaraki University)
Takaaki HOSOYA (College of Engineering, Ibaraki University)
Takashi OHHARA (J-PARC Center, JAEA)

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