[SCAPA seminar] Ultrahigh-brilliance gamma-rays from laser plasma accelerators

durch Herr Zhu Xinglong

Mittwoch 31.03.2021, 14:00 → 15:00 Europe/Berlin

High-energy photon sources have a wide variety of applications ranging from fundamental research to medical imaging and industrial radiography. Recent development in laser-plasma accelerators has led to compact ultrashort X/γ-ray sources that can deliver peak brilliance comparable with conventional synchrotron sources. However, they have low efficiencies and are typically limited to photon energies ranging from hundreds of keV to a few MeV. In this talk, we propose several new schemes for generating collimated beams of γ-rays with photon energies tunable up to GeV level and controlling the photon beams with intense lasers. Three-dimensional PIC simulations show that more than 10^12 γ-ray photons/shot are produced with efficiencies in excess of 10% for photons above 1 MeV, emitted with unprecedented peak brilliance of over 10^26 photons s^−1 mm^−2 mrad^−2 per 0.1% bandwidth. This may open up new opportunities for applications in a wide range of scientific fields.
 

Meeting ID: 936 3249 2678

Password: 143495

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