A simple method of producing a focused x-ray beam

Enrico Brunetti; Karolina Kokurewicz; Silvia Cipiccia; Antoine Maitrallain; Mohammed Shahzad; Roman Spesyvtsev; Dino A. Jaroszynski

doi:10.1117/12.2524167

24 April 2019 A simple method of producing a focused x-ray beam

Enrico Brunetti, Karolina Kokurewicz, Silvia Cipiccia, Antoine Maitrallain, Mohammed Shahzad, Roman Spesyvtsev, Dino A. Jaroszynski

Author Affiliations +

Proceedings Volume 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III; 110360S (2019) https://doi.org/10.1117/12.2524167
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

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.

Citation Download Citation

Enrico Brunetti, Karolina Kokurewicz, Silvia Cipiccia, Antoine Maitrallain, Mohammed Shahzad, Roman Spesyvtsev, and Dino A. Jaroszynski "A simple method of producing a focused x-ray beam", Proc. SPIE 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 110360S (24 April 2019); https://doi.org/10.1117/12.2524167

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