N. Cavanagh
A5050762179- Laser-Plasma Interactions and Diagnostics
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Laser-Matter Interactions and Applications
- Particle Detector Development and Performance
- Medical Imaging Techniques and Applications
- Advanced X-ray Imaging Techniques
- Crystallography and Radiation Phenomena
- Spacecraft and Cryogenic Technologies
- Particle accelerators and beam dynamics
- Ion-surface interactions and analysis
- Dark Matter and Cosmic Phenomena
- Laser Design and Applications
- Radiation Therapy and Dosimetry
- High-pressure geophysics and materials
- Astro and Planetary Science
- High-Energy Particle Collisions Research
- Atomic and Molecular Physics
- Laser-induced spectroscopy and plasma
- Gyrotron and Vacuum Electronics Research
Queen's University Belfast
2020-2024
Abstract This Conceptual Design Report describes LUXE (Laser Und XFEL Experiment), an experimental campaign that aims to combine the high-quality and high-energy electron beam of European with a powerful laser explore uncharted terrain quantum electrodynamics characterised by both high energy intensity. We will reach this hitherto inaccessible regime physics analysing electron-photon photon-photon interactions in extreme environment provided intense focus. The background its relevance are...
Abstract This Technical Design Report presents a detailed description of all aspects the LUXE (Laser Und XFEL Experiment), an experiment that will combine high-quality and high-energy electron beam European with high-intensity laser, to explore uncharted terrain strong-field quantum electrodynamics characterised by both high energy intensity, reaching Schwinger field beyond. The further implications for search physics beyond Standard Model are also discussed.
This Technical Design Report presents a detailed description of all aspects the LUXE (Laser Und XFEL Experiment), an experiment that will combine high-quality and high-energy electron beam European with high-intensity laser, to explore uncharted terrain strong-field quantum electrodynamics characterised by both high energy intensity, reaching Schwinger field beyond. The further implications for search physics beyond Standard Model are also discussed.
Measuring signatures of strong-field quantum electrodynamics (SF-QED) processes in an intense laser field is experimental challenge: it requires detectors to be highly sensitive single electrons and positrons the presence typically very strong x-ray $\gamma$-photon background levels. In this paper, we describe a particle detector capable diagnosing leptons from SF-QED interactions discuss level simulations for upcoming Experiment-320 at FACET-II (SLAC National Accelerator Laboratory). The...
Abstract Laser-driven compact particle accelerators can provide ultrashort pulses of broadband X-rays, well suited for undertaking X-ray absorption spectroscopy measurements on a femtosecond timescale. Here the Extended Absorption Fine Structure (EXAFS) features K-edge copper sample have been observed over 250 eV window in single shot using laser wakefield accelerator, providing information both electronic and ionic structure simultaneously. This capability will allow investigation ultrafast...
Abstract We present here a novel scheme for the high-resolution spectrometry of high-flux gamma-ray beams with energies per photon in multi-GeV range. The spectrometer relies on conversion photons into electron-positron pairs solid foil high atomic number. measured electron and positron spectra are then used to reconstruct spectrum beam. performance has been numerically tested against predicted expected from non-linear Compton scattering proposed LUXE experiment, showing fidelity identifying...
We report on the first experimental characterization of a gamma-ray spectrometer designed to spectrally resolve high-flux photon beams with energies in GeV range. The has been experimentally characterized using bremsstrahlung source obtained at Apollon laser facility during interaction laser-wakefield accelerated electron (maximum energy 1.7 and overall charge $207\ifmmode\pm\else\textpm\fi{}62$ pC) 1 mm thick tantalum target. Experimental data confirms possibility performing single-shot...
The rapid progress that plasma wakefield accelerators are experiencing is now posing the question as to whether they could be included in design of next generation high-energy electron-positron colliders. However, typical structure accelerating wakefields presents challenging complications for positron acceleration. Despite seminal proof-of-principle experiments and theoretical proposals, experimental research plasma-based acceleration positrons currently limited by scarcity beams suitable...
We report on the first experimental characterization of a laser-wakefield accelerator able to deliver, in single pulse, doses excess 1 Gy timescales order tens femtoseconds, reaching unprecedented average dose-rates above $10^{13}$ Gy/s. The irradiator is demonstrated deliver tuneable up 2.2 cm$^2$ area and with high degree longitudinal transverse uniformity irradiation. In this regime, proof-of-principle irradiation patient-derived glioblastoma stem-like cells human skin fibroblast show...
While plasma-based accelerators have the potential to positively impact a broad range of research topics, route application will only be possible through improved understanding their stability. We present experimental results laser wakefield accelerator in nonlinear regime helium gas jet target with density transition produced by razor blade flow. Modifications setup are correlated variations plasma profile diagnosed via interferometry and shot-to-shot for nominally equal conditions...
We report on the first experimental characterisation of a gamma-ray spectrometer designed to spectrally resolve high-flux photon beams with energies in GeV range. The has been experimentally characterised using bremsstrahlung source obtained at Apollon laser facility during interaction laser-wakefield accelerated electron (maximum energy 1.7 and overall charge 207$\pm$62 pC) 1 mm thick tantalum target. Experimental data confirms possibility performing single-shot measurements, without need...
<title>Abstract</title> Laser-wakefield accelerated electron beams have been demonstrated to be a viable alternative those produced by radio-frequency systems, with unique characteristics including intrinsic femtosecond-scale duration and micron-scale source size. In addition, they present the practical advantage of generally compact cost-effective setup inherently synchronsed high-power laser. The rapid progress experienced these accelerators is now posing question as whether could included...