Results 11 to 20 of about 77,319 (287)

Analytic Model Of Electron Self-Injection In A Plasma Wakefield Accelerator In The Strongly Nonlinear Bubble Regime [PDF]

open access: yes, 2012
Self-injection of background electrons in plasma wakefield accelerators in the highly nonlinear bubble regime is analyzed using particle-in-cell and semi-analytic modeling.
Khudik, V.   +3 more
core   +1 more source

Particle Acceleration Mechanisms [PDF]

open access: yesInternational Astronomical Union Colloquium, 1994
AbstractHigh-energy particle acceleration is observed to proceed in a diverse variety of astrophysical sites ranging from the terrestrial aurorae to the most distant quasars. Particle acceleration is a fairly common channel for the release of large-scale kinetic, rotational, and magnetic energy.
openaire   +3 more sources

Development of a novel approach for construction of high gradient braze-free S-band cavities

open access: yesScientific Reports, 2021
Vacuum breakdown is one of the main limitations to the operating accelerating gradient in radio frequency linear accelerators. Recent studies of copper cavities have been shown that harder copper conditions more quickly and can reach higher accelerating ...
Mahdi Aghayan   +4 more
doaj   +1 more source

Review of Quality Optimization of Electron Beam Based on Laser Wakefield Acceleration

open access: yesPhotonics, 2022
Compared with state-of-the-art radio frequency accelerators, the gradient of laser wakefield accelerators is 3–4 orders of magnitude higher. This is of great significance in the development of miniaturized particle accelerators and radiation sources ...
Kangnan Jiang   +3 more
doaj   +1 more source

Naked Singularities as Particle Accelerators II [PDF]

open access: yes, 2011
We generalize here our earlier results on particle acceleration by naked singularities. We showed recently[1] that the naked singularities that form due to gravitational collapse of massive stars provide a suitable environment where particles could get ...
Daniele Malafarina   +8 more
core   +3 more sources

Particle Acceleration Mechanisms

open access: yesSpace Science Reviews, 2008
We review the possible mechanisms for production of non-thermal electrons which are responsible for non-thermal radiation in clusters of galaxies. Our primary focus is on non-thermal Bremsstrahlung and inverse Compton scattering, that produce hard X-ray emission.
Petrosian, V., Bykov, A.
openaire   +2 more sources

Automation and control of laser wakefield accelerators using Bayesian optimization

open access: yesNature Communications, 2020
Laser wakefield accelerators are compact sources of ultra-relativistic electrons which are highly sensitive to many control parameters. Here the authors present an automated machine learning based method for the efficient multi-dimensional optimization ...
R. J. Shalloo   +28 more
doaj   +1 more source

Formation of temporally shaped electron bunches for beam-driven collinear wakefield accelerators

open access: yesPhysical Review Accelerators and Beams, 2021
Beam-driven collinear wakefield accelerators (CWAs) that operate by using slow-wave structures or plasmas hold great promise toward reducing the size of contemporary accelerators.
Wei Hou Tan   +2 more
doaj   +1 more source

Evaluation of MLC Thickness and Composite Effects on Collimation Parameters using EGSnrc and IAEA Phase Space Data [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2020
Background: Recently, multileaf collimators (MLC) have become an important part of any LINAC collimation system because they reduce the treatment planning time and improve the conformity.
K Hadad, H Alipour
doaj   +1 more source

Development of Particle Accelerators in the Life and Health Fields [PDF]

open access: yes中国工程科学
With the intensification of population aging, increasing environmental risks, and evolving disease spectra, the incidence of major chronic diseases in China continues to rise.
Donglin Ren   +5 more
doaj   +1 more source

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