636 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Lancaster UniversityGB114 papers
- Daresbury LaboratoryGB82 papers
- University of ManchesterGB70 papers
- University of LiverpoolGB59 papers
- Sci-Tech DaresburyGB51 papers
- European Organization for Nuclear ResearchCH45 papers
- University of StrathclydeGB43 papers
- University College LondonGB30 papers
- University of OxfordGB28 papers
- Imperial College LondonGB27 papers
- Deutsches Elektronen-Synchrotron DESYDE25 papers
- Budker Institute of Nuclear PhysicsRU21 papers
23 papers · 1 filter
Transition between Instability and Seeded Self-Modulation of a Relativistic Particle Bunch in Plasma
F. Batsch, P. Muggli, R. Agnello +94
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of a long proton bunch in plasma. We show experimentally t…
Collisionless shock acceleration in the corona of an inertial confinement fusion pellet with possible application to ion fast ignition
E. Boella, R. Bingham, R. A. Cairns +6
Two-dimensional Particle-In-Cell simulations are used to explore collisionless shock acceleration in the corona plasma surrounding the compressed core of an inertial confinement fu…
Temporal boundaries in electromagnetic materials
Jonathan Gratus, Rebecca Seviour, Paul Kinsler +1
Temporally modulated optical media are important in both abstract and applied applications, such as spacetime transformation optics, relativistic laser-plasma interactions, and dyn…
Characterisation of Laser Wakefield Acceleration Efficiency with Octave Spanning Near-IR Spectrum Measurements
M. J. V. Streeter, Y. Ma, B. Kettle +25
We report on experimental measurements of energy transfer efficiencies in a GeV-class laser wakefield accelerator. Both the transfer of energy from the laser to the plasma wakefiel…
Particle-In-Cell simulation of whistler heat flux instabilities in the solar wind: heat flux regulation and electron halo formation
A. Micera, A. N. Zhukov, R. A. López +4
We present results of two-dimensional fully kinetic Particle-In-Cell simulation in order to shed light on the role of whistler waves in the scattering of strahl electrons and in th…
Experimental study of extended timescale dynamics of a plasma wakefield driven by a self-modulated proton bunch
J. Chappell, E. Adli, R. Agnello +96
Plasma wakefield dynamics over timescales up to 800 ps, approximately 100 plasma periods, are studied experimentally at the Advanced Wakefield Experiment (AWAKE). The development o…
Attosecond Polarisation Modulation of X-ray Radiation in a Free Electron Laser
J. Morgan, B. W. J. McNeil
A new method to generate short wavelength Free Electron Laser output with modulated polarisation at attosecond timescales is presented. Simulations demonstrate polarisation switchi…
Controlled density-downramp injection in a beam-driven plasma wakefield accelerator
Alexander Knetsch, Bridget Sheeran, Lewis Boulton +26
This paper describes the utilization of beam-driven plasma wakefield acceleration to implement a high-quality plasma cathode via density-downramp injection in a short injector stag…
Temporary Singularities and Axions: an analytic solution that challenges charge conservation
Jonathan Gratus, Paul Kinsler, Martin W. McCall
We construct an analytic solution to Maxwell's equations that violates global charge conservation, by building on the possibilities demonstrated in [Foundations of Physics 49, 330…
Effect of dc voltage pulsing on high-vacuum electrical breakdowns near Cu surfaces
Anton Saressalo, Iaroslava Profatilova, William L. Millar +4
Vacuum electrical breakdowns, also known as vacuum arcs, are a limiting factor in many devices that are based on application of high electric fields near their component surfaces.…
Proton Bunch Self-Modulation in Plasma with Density Gradient
F. Braunmüller, T. Nechaeva, AWAKE Collboration
We study experimentally the effect of linear plasma density gradients on the self-modulation of a 400\,GeV proton bunch. Results show that a positive/negative gradient in/decreases…
Collisionless heat flux regulation via electron firehose instability in presence of a core and suprathermal population in the expanding solar wind
Maria Elena Innocenti, Elisabetta Boella, Anna Tenerani +1
The evolution of the electron heat flux in the solar wind is regulated by the interplay between several effects: solar wind expansion, that can potentially drive velocity-space ins…
The Large Hadron-Electron Collider at the HL-LHC
P. Agostini, H. Aksakal, S. Alekhin +333
The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting ener…
Nanostructure Accelerators: Novel concept and path to its realization
A. Sahai, M. Golkowski, F. Zimmermann +3
TeV/m acceleration gradients using crystals as originally envisioned by R. Hofstadter, an early pioneer of HEP, have remained unrealizable. Fundamental obstacles that have hampered…
Arc-Like Variable Bunch Compressors
Peter H. Williams, Gustavo Pérez-Segurana, Ian R. Bailey +3
Electron bunch compressors formed of achromat arcs have a natural advantage over the more commonly used chicane compressors in that linearisation of the longitudinal phase space is…
Guiding of high-intensity laser pulses in 100mm-long hydrodynamic optical-field-ionized plasma channels
A. Picksley, A. Alejo, J. Cowley +11
Hydrodynamic optically-field-ionized (HOFI) plasma channels up to 100mm long are investigated. Optical guiding is demonstrated of laser pulses with a peak input intensity of $6\tim…
The Laser-hybrid Accelerator for Radiobiological Applications
G. Aymar, T. Becker, S. Boogert +37
The `Laser-hybrid Accelerator for Radiobiological Applications', LhARA, is conceived as a novel, uniquely-flexible facility dedicated to the study of radiobiology. The technologies…
Experimental Study of Wakefields Driven by a Self-Modulating Proton Bunch in Plasma
M. Turner, P. Muggli, the AWAKE Collaboration
We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. We show that the wakefields' growt…
The Distributional Stress-Energy Quadrupole
Jonathan Gratus, Paolo Pinto, Spyridon Talaganis
We investigate stress-energy tensors constructed from the delta function on a worldline. We concentrate on quadrupoles as they make an excellent model for the dominant source of gr…
Analysis of Ultra-Short Bunches in Free-Electron Lasers
Lawrence Campbell, Henry Freund, James Henderson +3
Free-electron lasers (FELs) operate at wavelengths from millimeter waves through hard x-rays. At x-ray wavelengths, FELs typically rely on self-amplified spontaneous emission (SASE…
Free Electron Laser Generation of X-Ray Poincaré Beams
Jenny Morgan, Erik Hemsing, Brian W. J. McNeil +1
An optics-free method is proposed to generate X-ray radiation with spatially variant states of polarization via an afterburner extension to a Free Electron Laser (FEL). Control of…
Resonant excitation of very high gradient plasma wakefield accelerators by optical-period bunch trains
P. Manwani, N. Majernik, J. B. Rosenzweig
Using a periodic electron beam bunch train to resonantly excite plasma wakefields in the quasi-nonlinear (QNL) regime has distinct advantages over employing a single, higher charge…
Implications of beam filling patterns on the design of recirculating Energy Recovery Linacs
S. Setiniyaz, R. Apsimon, P. H. Williams
Recirculating energy recovery linacs are a promising technology for delivering high power particle beams (GW) while only requiring low power (kW) RF sources. This is ac…