Zobrazeno 1 - 10
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pro vyhledávání: '"McNeil, B."'
An algorithm and numerical code for the up-sampling of a system of particles, from a smaller to a larger number, is described. The method introduces a Poissonian `shot-noise' to the up-sampled distribution, typical of the noise statistics arising in
Externí odkaz:
http://arxiv.org/abs/2212.07905
Autor:
Habib, A. F., Manahan, G. G., Scherkl, P., Heinemann, T., Sutherland, A., Altuiri, R., Alotaibi, B. M., Litos, M., Cary, J., Raubenheimer, T., Hemsing, E., Hogan, M., Rosenzweig, J. B., Williams, P. H., McNeil, B. W. J., Hidding, B.
Electron beam quality is paramount for X-ray pulse production in free-electron-lasers (FELs). State-of-the-art linear accelerators (linacs) can deliver multi-GeV electron beams with sufficient quality for hard X-ray-FELs, albeit requiring km-scale se
Externí odkaz:
http://arxiv.org/abs/2212.04398
Autor:
Morgan, J., McNeil, B. W. J.
A method to temporally tailor the properties of X-ray radiation carrying Orbital Angular Momentum (OAM) is presented. In simulations, an electron beam is prepared with a temporally modulated micro-bunching structure which, when radiating at the secon
Externí odkaz:
http://arxiv.org/abs/2205.01211
Autor:
Morgan, J., McNeil, B. W. J.
Publikováno v:
Phys. Rev. Accel. Beams 24, 010701 (2021)
A new method to generate short wavelength Free Electron Laser output with modulated polarisation at attosecond timescales is presented. Simulations demonstrate polarisation switching timescales that are four orders of magnitude faster than the curren
Externí odkaz:
http://arxiv.org/abs/2008.08375
Autor:
Campbell, L. T., Freund, H. P., Henderson, J., McNeil, B. W. J., Traczykowski, P., van der Slot, P. J. M.
Free-electron lasers (FELs) operate at wavelengths down to hard x-rays, and are either seeded or start from noise. There is increasing interest in x-ray FELs that rely on Self-Amplified Spontaneous Emission (SASE), and this involves increasing simula
Externí odkaz:
http://arxiv.org/abs/1906.01996
Autor:
Cangiano, L.R., Villot, C., Renaud, J., Ipharraguerre, I.R., McNeil, B., DeVries, T.J., Steele, M.A. *
Publikováno v:
In Journal of Dairy Science August 2022 105(8):7125-7139
Previous models of the quantum regime of operation of the Free Electron Laser (QFEL) have performed an averaging and the application of periodic boundary conditions to the coupled Maxwell - Schrodinger equations over short, resonant wavelength interv
Externí odkaz:
http://arxiv.org/abs/1709.06302
Autor:
Campbell, L. T., McNeil, B. W. J.
It is shown via theory and simulation that the resonant frequency of a Free Electron Laser may be modulated to obtain an FEL interaction with a frequency bandwidth which is at least an order of magnitude greater than normal FEL operation. The system
Externí odkaz:
http://arxiv.org/abs/1706.01517
A model of a Free Electron Laser operating with an elliptically polarised undulator is presented. The equations describing the FEL interaction, including resonant harmonic radiation fields, are averaged over an undulator period and generate a general
Externí odkaz:
http://arxiv.org/abs/1603.07155