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High-resolution CT using white X-rays

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Background

·At BL09W, wide-field CT measurements using white X-rays (20 mm horizontal × 4 mm vertical) have been conducted by coalition members.
·However, the spatial resolution of wide-field CT is about 5-10 μm, which has not met user expectations in some cases.

Until now

·We have investigated the feasibility of performing high-resolution CT measurements at BL09W by using the same camera setup as that at BL10U (with the cooperation of professors from the Faculty of Agriculture, Tohoku University), along with attenuators to block X-rays below 20 keV.

From now on

·We have confirmed that high-resolution CT measurements are feasible at BL09W, as demonstrated below. A dedicated high-resolution CT setup is currently under development at BL09W.
·Coalition members can carry out high-resolution CT measurements under the following conditions:

      ≫From July to December 2025
          High-resolution CT setup temporarily borrowed from other beamlines and/or researchers at Tohoku           University will be used.
          Please consult the PhoSIC staff before submitting your beamtime proposal.
      ≫After January 2026 (tentative)
          High-resolution CT will be available with newly introduced equipment.

      ·1.Please note that the above schedule is subject to change depending on the progress of equipment procurement.              We will post updates on our website as needed.
      ·2.If you wish to conduct a high-resolution CT experiment, please understand that scheduling and equipment              adjustments will be necessary for the time being.

Wide-field CT BL09W:A Slice of Cheese


High-resolution CT BL09W:A Slice of Cheese


The above data were obtained at BL09W 25 keV. It was difficult to obtain similar data at BL10U 15 keV due to sample flow.

Wide-field & High-resolution CT @BL09W:CFRP


High-resolution CT at BL09W can resolve a carbon fiber (diameter = 10 µm).