J
James Rosenzweig
Researcher at University of California, Los Angeles
Publications - 285
Citations - 4571
James Rosenzweig is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Laser & Beam (structure). The author has an hindex of 35, co-authored 283 publications receiving 3991 citations. Previous affiliations of James Rosenzweig include University of California.
Papers
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Journal ArticleDOI
Adjustable, short focal length permanent-magnet quadrupole based electron beam final focus system
J. K. Lim,Pedro Frigola,Gil Travish,James Rosenzweig,S.G. Anderson,W. J. Brown,J. S. Jacob,C. L. Robbins,Aaron Tremaine +8 more
TL;DR: In this paper, a focusing system using permanent magnet quadrupoles (PMQs) is reported, which achieves a field gradient of 560 T/m, the highest ever reported in a magnetic optics system, and is tuned by adjusting the position of the three magnets along the beamline axis.
Journal ArticleDOI
Coherent optical vortices from relativistic electron beams
TL;DR: The interaction between light and a relativistic electron beam can be used to generate optical vortices in a free electron laser, providing a way to engineer bright orbital angular momentum light at shorter X-ray wavelengths.
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Measurements of Gain Larger than 10 5 at 12 mm in a Self-Amplified Spontaneous-Emission Free-Electron Laser
Mark Hogan,Claudio Pellegrini,James Rosenzweig,Sue Anderson,Pedro Frigola,Aaron Tremaine,C.M. Fortgang,Dinh C. Nguyen,Richard L. Sheffield,J.M. Kinross-Wright,A.A. Varfolomeev,A. A. Varfolomeev,S.V. Tolmachev,Roger Carr +13 more
TL;DR: In this paper, the authors reported very large output intensities corresponding to a gain larger than 10sup 5 for a single pass free-electron laser operating in the self-amplified spontaneous emission (SASE) mode at 12 µm.
Journal ArticleDOI
Observation of acceleration and deceleration in gigaelectron-volt-per-metre gradient dielectric wakefield accelerators.
Brendan O'Shea,Brendan O'Shea,Gerard Andonian,S. Barber,K. Fitzmorris,Sahel Hakimi,Jere C. Harrison,P. Hoang,Mark Hogan,Brian Naranjo,O. Williams,Vitaly Yakimenko,James Rosenzweig +12 more
TL;DR: These measurements improve on previous measurements by and order of magnitude and show promise for dielectric wakefield accelerators as sources of high-energy electrons.
Journal ArticleDOI
Space-charge effects in high brightness electron beam emittance measurements
TL;DR: In this article, the role of space charge forces in a traditional measurement of transverse emittance, the quadrupole scan, is discussed and the mitigation of these effects by use of multislit-or pepperpot-based techniques is explained.