Exploring Inverse Compton Scattering at CLARA with Chris Arran
"Discover the potential of Inverse Compton Scattering experiments at CLARA by Christopher Arran, focusing on fundamental QED processes and strong field effects. Explore simulations, plasma optics, and beam optimizations for enhanced results in photon beam research. Join the journey towards high-intensity interactions and electron beam advancements for innovative scientific discoveries."
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Presentation Transcript
Potential Inverse Compton Scattering Experiments at CLARA Christopher Arran, University of York / Lancaster University 3/12/2024 Chris Arran 1
Inverse Compton Scattering Fundamental QED process possible in vacuum Source of bright polarised x-ray and gamma-ray beams Ultrafast and highly penetrative diagnostic ICS ICS E. Los et al. Gemini 2021 XFEL XFEL DLS CT CT 3/12/2024 Chris Arran 2
Simulated interaction at CLARA 120 TW laser hitting a 250 MeV CLARA beam at 1021 Wcm-2 High charge conditions, assuming 250 pC in 100 m, 100 fs and a laser focus of 2 m 7x105 photons produced above 1 MeV Peak brightness of ~2x1018 photons/s/mm2/mrad2/0.1% BW Only a tiny fraction of the electrons hit peak intensity Photon beam has 30 fs rms duration and 1 m rms radius MeV-scale -ray beam 250 MeV e- beam 120 TW laser focussed at f/2 Chris Arran 3/12/2024 3
Exploring Strong Field QED Strong fields change Compton scattering and cause electron recoil But only small divergences are possible under CLARA conditions Repeatable consistent shots are crucial Repeatable consistent shots are crucial 3/12/2024 Chris Arran 4
Potential plasma optics Creating a few m, 10s fs electron beam would improve ICS signatures Plasma boosters could increase electron beam energy Beam compression and focussing could increase bunch density at interaction Ultra-fast kicker could remove non-interacting electrons FBPIC simulation 200 TW laser focussed at f/40 into 2x1018 cm-3 plasma 3/12/2024 Chris Arran 5
