Results 1 to 10 of about 808,286 (250)
Coherent beam-beam tune shift of unsymmetrical beam-beam interactions with large beam-beam parameter [PDF]
Physical Review E, 2005 Coherent beam-beam tune shift of unsymmetrical beam-beam interactions was studied experimentally and numerically in HERA where the lepton beam has a very large beam-beam parameter (up to $ _y=0.272$). Unlike the symmetrical case of beam-beam interactions, the ratio of the coherent and incoherent beam-beam tune shift in this unsymmetrical case of beam ...
Jin, Lihui +2 more
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Coherent beam-beam interaction with four colliding beams [PDF]
Physical Review E, 1995 The coherent beam-beam interaction in the absence of Landau damping is studied with a computer simulation of four space-charge-compensated colliding beams. Results are presented for the modes, phase space structures, widths, and growth rates of coherent beam-beam resonances.
, Podobedov, , Siemann
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Frictional interactions for non‐localized beam‐to‐beam and beam‐inside‐beam contact [PDF]
International Journal for Numerical Methods in Engineering, 2021 AbstractThis contribution presents the extensions of beam‐to‐beam and beam‐inside‐beam contact schemes of the same authors towards frictional interactions. Since the schemes are based on the beams' true surfaces (instead of surfaces implicitly deduced from the beams' centroid lines), the presented enhancements are not only able to account for ...
Magliulo, Marco +3 more
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Exponential beams of electromagnetic radiation [PDF]
, 2006 We show that in addition to well known Bessel, Hermite-Gauss, and Laguerre-Gauss beams of electromagnetic radiation, one may also construct exponential beams.
Allen L +13 more
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Observation of accelerating parabolic beams [PDF]
, 2008 We report the first observation of accelerating parabolic beams. These accelerating parabolic beams are similar to the Airy beams because they exhibit the unusual ability to remain diffraction-free while having a quadratic transverse shift during ...
Bandres, Miguel A. +3 more
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, 2016 29 pages, contribution to the CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18-29 Aug ...
Herr, W., Pieloni, T.
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Influence of section depth on the structural behaviour of reinforced concrete continuous deep beams [PDF]
, 2007 YesAlthough the depth of reinforced concrete deep beams is much higher than that of slender beams, extensive existing tests on deep beams have focused on simply supported beams with a scaled depth below 600 mm.
Ashour, Ashraf, Yang, Keun-Hyeok
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Higher-order moments and overlaps of Cartesian beams [PDF]
, 2010 We introduce a closed-form expression for the overlap between two different Cartesian beams. In the course of obtaining this expression, we establish a linear relation between the overlap of circular beams with azimuthal symmetry and the overlap of ...
Bandres, Miguel A. +2 more
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The coherent beam-beam interaction [PDF]
Conference Record of the 1991 IEEE Particle Accelerator Conference, 2002 The authors present the results of a new beam-beam simulation program that allows for a self-consistent calculation of the electromagnetic fields of the beams by treating general (non-Gaussian) beam distributions. The simulation program calculates the fields from the coordinates of the test-particles, and does not impose any restrictions on the beam ...
Krishnagopal, S., Siemann, R.H.
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Test Beams and Polarized Fixed Target Beams at the NLC [PDF]
, 2001 A conceptual program to use NLC beams for test beams and fixed target physics is described. Primary undisrupted polarized beams would be the most simple to use, but for NLC, the disrupted beams are of good enough quality that they could also be used ...
Keller, Lewis +4 more
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