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Registration Number

0222U001230, 0121U110846 , R & D reports

Title

Development of elements of X-ray optics using proton-beam lithography for X-ray phase contrast tomography

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Head

Lebed Oleksandr A., к.ф.-м.н.

Registration Date

25-01-2022

Organization

Institute of Applied Physics National Academy of Sciences of Ukraine

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 The aim of the work is the development and creation of diffraction gratings on the basis of the analytical accelerator complex of the Institute of Applied Physics of the NAS of Ukraine for X-ray phase contrast experiments. The process is carried out for a proton beam forming with 1 MeV energy at the mode of focusing in a line with using of multiples of magnetic quadrupole lenses. It is shown that the probe-forming system based on a distributed triplet with two independent power supplies allows to reduce the line width by an order of magnitude compared to the doublet. However, these systems have a fairly large aberration, which requires reducing the size of the angular collimator and, consequently, reducing the amount of beam current. The quadruplet system of magnetic quadrupole lenses with individual power supplies allows you to focus the beam in a line with the same dimensions as triplet configurations, but is a more complex system. The advantage of quadruplet is lower aberrations, which will increase the beam current due to the larger size of the angular collimator and speed up the process of making lattice templates. The development of diffraction grating templates with parameters that are optimal for the implementation of phase contrast on the corresponding channel has been started.

Product Description

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Zakharets Myhailo I
Kolinko Sergii V.
Kolomiiets Volodymyr М.
Nahornyy Dmytro A.
Ponomarev Oleksandr G.
Rebrov Volodymyr A.
Salyvon Vadym F

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2022-03-09