Results 311 to 320 of about 2,988,636 (351)
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2020
Bernoulli theory is a classical beam theory where the transverse shear deformation is neglected and the deflection of the beam indicated by w is the only degree of freedom of the model and the in-plane rotation si given by the derivative of the transverse deflection with respect to the beam axis.
Ferreira A. J. M., Fantuzzi N.
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Bernoulli theory is a classical beam theory where the transverse shear deformation is neglected and the deflection of the beam indicated by w is the only degree of freedom of the model and the in-plane rotation si given by the derivative of the transverse deflection with respect to the beam axis.
Ferreira A. J. M., Fantuzzi N.
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PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268), 2002
We have performed a strong-strong simulation to investigate the effect of a beam-beam interaction on the motion of circulating beams in a 50 GeV /spl times/ 50 GeV muon-collider ring. The phase-slip factor /spl eta//sub 1/ in the muon-collider ring is approximately -1 /spl times/ 10/sup -6/ so that the synchrotron motion is nearly frozen during the ...
null Eun-San Kim +2 more
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We have performed a strong-strong simulation to investigate the effect of a beam-beam interaction on the motion of circulating beams in a 50 GeV /spl times/ 50 GeV muon-collider ring. The phase-slip factor /spl eta//sub 1/ in the muon-collider ring is approximately -1 /spl times/ 10/sup -6/ so that the synchrotron motion is nearly frozen during the ...
null Eun-San Kim +2 more
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Beam-beam simulation with non-Gaussian beams
AIP Conference Proceedings, 1990A new method of calculating the beam‐beam force for High Energy Colliding Beam Machines is given and the method does not assume that the particle distribution is gaussian. With the method, the coherent beam‐beam tune shift as a function of beam current is reproduced for the horizontal case. (AIP)
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Beam-based beam-beam benchmarking and correction
Optics studies in the LHC are generally performed on low-intensity, non-colliding beams. Understanding the optics perturbation from beam-beam effects however, is of significant interest. This was particularly true for the LHC in 2024, where the 3Qy resonance driven by the long-range beam-beam (LRBB) contributed to breaking of the collimator hierarchy ...Maclean,Ewen +6 more
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Beam-Beam Instability in Case of Strong-Weak Beam-Beam Interactions
AIP Conference Proceedings, 2003Beam‐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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Beam-Beam Synchrobetatron Resonances
IEEE Transactions on Nuclear Science, 1983Electron storage rings see dangerous beam-beam synchrobetatron sidebands which are almost invisible to single beams, for example the diagonal resonances Qz-Qx = mQs. Colliding protons and antiprotons in the SPS do not see diagonal sidebands, despite the absence of stabilisation by radiation damping.
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2020
Unlike the Bernoulli beam formulation, the Timoshenko beam formulation accounts for transverse shear deformation. It is therefore capable of modeling thin or thick beams. In this chapter we perform the analysis of Timoshenko beams in static bending, free vibrations and buckling. We present the basic formulation and show how a MATLAB code can accurately
Ferreira A. J. M., Fantuzzi N.
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Unlike the Bernoulli beam formulation, the Timoshenko beam formulation accounts for transverse shear deformation. It is therefore capable of modeling thin or thick beams. In this chapter we perform the analysis of Timoshenko beams in static bending, free vibrations and buckling. We present the basic formulation and show how a MATLAB code can accurately
Ferreira A. J. M., Fantuzzi N.
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Beam-beam interaction: Experimental
AIP Conference Proceedings, 1990Performance limitations of electron‐positron circular colliders are reviewed with emphasis on examining beam‐beam limits through experimental data collected from operating storage rings. Particular emphasis has been put on reviewing scaling laws for the beam‐beam parameter, or ‘‘tune‐shift.’’Observational data on colliders with asymmetric energy are ...
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AIP Conference Proceedings, 2003
This paper summarizes the presentations and discussions of the Beam‐Beam’03 workshop, held in Montauk, Long Island, from May 19 to 23, 2003. Presentations and discussions focused on halo generation from beam‐beam interactions; beam‐beam limits, especially coherent limits and their effects on existing and future hadron colliders; beam‐beam compensation ...
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This paper summarizes the presentations and discussions of the Beam‐Beam’03 workshop, held in Montauk, Long Island, from May 19 to 23, 2003. Presentations and discussions focused on halo generation from beam‐beam interactions; beam‐beam limits, especially coherent limits and their effects on existing and future hadron colliders; beam‐beam compensation ...
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