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Proceedings Paper

A simple method of producing a focused x-ray beam
Author(s): Enrico Brunetti; Karolina Kokurewicz; Silvia Cipiccia; Antoine Maitrallain; Mohammed Shahzad; Roman Spesyvtsev; Dino A. Jaroszynski
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Paper Abstract

One challenge in X-ray optics is how to focus hard X-rays. The possibility of achieving a wide-range of spot sizes would be an advantage for many applications, such as semiconductor lithography, nuclear fusion diagnostics or focused X-ray beams for cancer therapy. Focused X-rays could deliver precise high doses to tumours while sparing the surrounding tissue. Currently, a promising approach is using a Laue lens. However, they are limited by the diffraction capability of crystals and the complex mm-size arrangement of the optical elements. In addition, they are restricted to sub-MeV photon beams, because for higher energies the Bragg condition is not satisfied. We present an efficient and cost-effective method to extend this range up to tens of MeV using an electron-photon converter in the stream of focused high energy electrons. The emerging X-rays follow the trajectories of the electrons and the focus can be simply adjusted by modifying the focus of the electron beam. A bending magnet can be used to remove electrons, if necessary, however a mixed radiation could be an additional option. Our solution can also be adapted to a multiple beam arrangement as an effective alternative to Gamma Knife without the need for handling radioactive sources.

Paper Details

Date Published: 24 April 2019
PDF: 6 pages
Proc. SPIE 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 110360S (24 April 2019); doi: 10.1117/12.2524167
Show Author Affiliations
Enrico Brunetti, Univ. of Strathclyde (United Kingdom)
Karolina Kokurewicz, Univ. of Strathclyde (United Kingdom)
Silvia Cipiccia, Diamond Light Source Ltd. (United Kingdom)
Antoine Maitrallain, Univ. of Strathclyde (United Kingdom)
Mohammed Shahzad, Univ. of Strathclyde (United Kingdom)
Roman Spesyvtsev, Univ. of Strathclyde (United Kingdom)
Dino A. Jaroszynski, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 11036:
Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III
Dino A. Jaroszynski; MinSup Hur, Editor(s)

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