Results 281 to 290 of about 135,438 (314)

Beam-Beam Instability in Case of Strong-Weak Beam-Beam Interactions

AIP Conference Proceedings, 2003
Beam‐beam effects in HERA were studied with a self‐consistent beam‐beam simulation by using the particle‐in‐cell method. A remarkable agreement between the experimental measurement and the simulation result was observed on the emittance growth, luminosity reduction, and coherent beam‐beam tune shifts.
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Luminosity and the beam-beam interaction

AIP Conference Proceedings, 2001
The beam-beam interaction is a strong nonlinear force and ultimately limits the luminosity performance of a colliding beam accelerator. The beam dynamics resulting from the beam-beam force has many aspects and is still under active investigation.
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Noise instability in nonlinear beam-beam interaction

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998
Abstract Diffusion instability of a beam induced by random fluctuations in the size of an opposite colliding beam has been studied. It is shown, that the considered beam-beam configuration is always unstable at any value of beam-beam tune shift, if two conditions are valid: (i) beam-beam kick is a nonlinear function of coordinate and (ii) beam-beam ...
Yuri K. Batygin, Takeshi Katayama
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Beam-beam interaction simulations of the SSC

AIP Conference Proceedings, 1991
The beam‐beam interaction at the collision point is studied using the particle‐in cell method for the Superconducting Super Collider (SSC). This model consists of the symplectic map of the magnets that lie between collision points and the self‐consistent treatment of the interactions of many particles at the collision point.
T. Tajima, J. Koga
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The beam-beam interaction: Coherent effects

AIP Conference Proceedings, 1990
Coherent phenomena and recent theoretical approaches to them are reviewed for the symmetric and asymmetric e+e− colliding storage rings.
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Beam-beam interaction in linear collider

AIP Conference Proceedings, 2001
Beam-beam interaction at the collision point of future e+e− linear colliders imposes strong constraints on the collider parameters. The expected phenomena include bunch deformation due to the Coulomb force, synchrotron radiation (beamstrahlung), coherent pair creation, and incoherent processes. These topics are very briefly summarized.
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Effect of noise in beam-beam interaction

Proceedings of the 1997 Particle Accelerator Conference (Cat. No.97CH36167), 2002
Beam-beam instability induced by random fluctuations in size of a strong beam has been studied both numerically and analytically. In contrast with stochastic particle motion due to overlapping of nonlinear beam-beam resonance islands, noise beam-beam instability exists at any value of beam-beam parameter.
Y.K. Batygin, T. Katayama
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Beam-Beam Interaction Effects in DAFNE

2002
Tesi di Dottorato di Ricerca in Elettromagnetismo Applicato e Scienze ...
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Laser–particle interactions in shaped beams: Beam power normalization

Journal of Quantitative Spectroscopy and Radiative Transfer, 2013
Abstract We present a semi-analytic theory for calculating light–particle interactions in shaped laser beams even when the paraxial beam description is invalid. It requires weighting the expressions for the cross sections with a beam normalization parameter, ϰ , associated with the incident power.
Stout, Brian, Rolly, Brice, Fall, Mandiaye, Hazart, Jérôme, Bonod, Nicolas   +4 more
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Satellite Resonances Due to Beam-Beam Interaction

IEEE Transactions on Nuclear Science, 1977
Experimental and theoretical investigations have shown that the luminosity of the storage ring DORIS is limited by betatron-synchrotron resonances which are produced by the beam-beam interaction. The resonance frequencies are given by Qsa=(p+rQs)/q, where p, q, r are integers and Qs and Qs are the betatron and synchrotron wave numbers, respectively. It
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