Dresden 2017 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: New Accelerator Concepts II

AKBP 2.12: Vortrag

Dienstag, 21. März 2017, 12:30–12:45, MOL 213

Simulation of a laser-plasma-driven Thomson source for medical X-ray fluorescence imaging — •Theresa Brümmer and Florian Grüner — Institut für Experimentalphysik, Universität Hamburg, Deutschland

The topic of this talk is the development of an X-ray source for the detection of gold nanoparticles in the human body through X-ray fluorescence. These nanoparticles can act as a tracer for cancer cells or damaged neurons. On the basis of laser-plasma acceleration, an all-laser driven and thus compact X-ray source can be realised with the help of Thomson scattering (optical undulator). The medical application dictates the characteristics of the source which are a quasi-monochromatic photon spectrum at 150 keV, the maximum possible photon yield and a small opening angle to achieve a high spatial resolution. For this, electron bunch and laser pulse parameters are optimised with the help of simulations. These include the simulation of the electron trajectories. Their radiation per energy and solid angle is then calculated numerically. In this talk, first simulative results of the optimisation process are presented.