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您的检索式：作者名="J.van Tilborg"
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| 1 | Free electron lasers driven by plasma accelerators:status and near-term prospects显示文摘Owing to their ultra-high accelerating gradients,combined with injection inside micrometer-scale accelerating wakefield buckets,plasma-based accelerators hold great potential to drive a new generation of free-electron lasers(FELs).Indeed,the first demonstration of plasma-driven FEL gain was reported recently,representing a major milestone for the field.Several groups around the world are pursuing these novel light sources,with methodology varying in the use of wakefield driver(laser-driven or beam-driven),plasma structure,phase-space manipulation,beamline design,and undulator technology,among others.This paper presents our best attempt to provide a comprehensive overview of the global community efforts towards plasma-based FEL research and development. | C.Emma J.Van Tilborg R.Assmann S.Barber A.Cianchi S.Corde M.E.Couprie R.D'Arcy M.Ferrario A.F.Habib B.Hidding M.J.Hogan C.B.Schroeder A.Marinelli M.Labat R.Li J.Liu A.Loulergue J.Osterhoff A.R.Maier B.W.J.Mc Neil W.Wang | 2021 | High Power Laser Science and Engineering2021，9，4： | 2 |
| 2 | Observation of optical transition radiation from electron beams generated by laser plasma accelerator显示文摘Laser plasma accelerators (LPAs) have made great progress, achieving electron beam with energy up to 1 GeV from a centimeter scale capillary plasma waveguide. Here, we report the measurement of optical transition radiation (OTR) from the capillary-based LPA electron beams. Transition radiation images, produced by electrons passing through two separate foils (located at 2.3 m and 3.8 m away from the exit of the LPA) were recorded with a high resolution imaging system, respectively. Two magnetic quadrupole lenses were placed right after the capillary to focus and collimate the electron beams. Significant localized spikes appeared in the OTR images when the electron beam was focused by the magnetic quadrupole lenses, indicating the coherence of the radiation and the existence of ultrashort longitudinal structures inside the electron beam. | 林晨 K.Nakamura J.Van Tilborg A.J.Gonsalves T.Sokollik S.Shiraishi W.P.Leemans 郭之虞 | 2013 | Chinese Physics C2013，37，2： | 0 |
| 3 | Radial density profile and stability of capillary discharge plasma waveguides of lengths up to 40 cm显示文摘We measured the parameter reproducibility and radial electron density profile of capillary discharge waveguides with diameters of 650µm to 2 mm and lengths of 9 to 40 cm.To the best of the authors’knowledge,40 cm is the longest discharge capillary plasma waveguide to date.This length is important for≥10 GeV electron energy gain in a single laser-driven plasma wakefield acceleration stage.Evaluation of waveguide parameter variations showed that their focusing strength was stable and reproducible to<0.2%and their average on-axis plasma electron density to<1%.These variations explain only a small fraction of laser-driven plasma wakefield acceleration electron bunch variations observed in experiments to date.Measurements of laser pulse centroid oscillations revealed that the radial channel profile rises faster than parabolic and is in excellent agreement with magnetohydrodynamic simulation results.We show that the effects of non-parabolic contributions on Gaussian pulse propagation were negligible when the pulse was approximately matched to the channel.However,they affected pulse propagation for a non-matched configuration in which the waveguide was used as a plasma telescope to change the focused laser pulse spot size. | M.Turner A.J.Gonsalves S.S.Bulanov C.Benedetti N.A.Bobrova V.A.Gasilov P.V.Sasorov G.Korn K.Nakamura J.van Tilborg C.G.Geddes C.B.Schroeder E.Esarey | 2021 | High Power Laser Science and Engineering2021，9，2： | 0 |
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