Results 61 to 70 of about 131,717 (268)

Beam-dust interactions in an e^{+}e^{−} collider

Physical Review Accelerators and Beams
In recent electron-positron colliders designed and operated with very low emittance and high current, the energy density of the beam has increased significantly compared to earlier designs.
Kazuhito Ohmi, Hitoshi Fukuma, Shinji Terui   +2 more
doaj   +1 more source

Beam ion instability: Measurement, analysis, and simulation

Physical Review Special Topics. Accelerators and Beams, 2013
A weak vertical coupled-bunch instability with oscillation amplitude of the order of a few μm has been observed in SPEAR3 at nominal vacuum pressure. The instability becomes stronger with increasing neutral gas pressure as observed by turning off vacuum ...
L. Wang, J. Safranek, Y. Cai, J. Corbett, R. O. Hettel, T. O. Raubenheimer, J. Schmerge, J. Sebek   +7 more
doaj   +1 more source

Filling pattern dependence of regenerative beam breakup instability in energy recovery linacs

Physical Review Accelerators and Beams, 2021
Beam breakup instability is a potential issue for all particle accelerators and is often the limiting factor for the maximum beam current that can be achieved.
S. Setiniyaz, R. Apsimon, P. H. Williams   +2 more
doaj   +1 more source

Investigation of the flat beam model of the beam-beam interaction [PDF]

Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440), 2003
At the interaction point of a storage ring collider each beam is subject to perturbations due to the electromagnetic field of the counterrotating beam. For flat beams, a well-known approximation models the beam by a current sheet which is uniform in the horizontal plane, restricting the particle motion to the vertical direction. In this classical model
Bjoern S. Schmekel, Georg H. Hoffstaetter, Joseph T. Rogers   +2 more
openaire   +3 more sources

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Dust-induced beam losses in the cryogenic arcs of the CERN Large Hadron Collider

Physical Review Accelerators and Beams, 2022
The interaction of dust particles with the LHC proton beams accounts for a major fraction of irregular beam loss events observed in LHC physics operation.
A. Lechner, P. Bélanger, I. Efthymiopoulos, L. Grob, B. Lindstrom, R. Schmidt, D. Wollmann   +6 more
doaj   +1 more source

Simulation of the beam halo from the beam-beam interaction [PDF]

Physical Review E, 1994
A technique for simulating the beam halo in circular ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ colliders is introduced, tested, and applied. Amplitude space is divided into core and halo regions, and only halo particles are tracked saving a factor of 100 or more in CPU time.
, Chen, , Irwin, , Siemann
openaire   +2 more sources

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Mitigation of the kink instability in the energy recovery linac based electron-ion collider

Physical Review Special Topics. Accelerators and Beams, 2013
Beam-beam effects in eRHIC, the proposed energy recovery linac (ERL)-based electron-ion collider (EIC) at BNL, have several unique features distinguishing them from those in hadron and lepton colliders.
Yue Hao, Vladimir N. Litvinenko, Vadim Ptitsyn   +2 more
doaj   +1 more source

Incoherent pair generation in a beam-beam interaction simulation [PDF]

Physical Review Special Topics - Accelerators and Beams, 2006
This paper deals with two topics: the generation of incoherent pairs in two beam-beam simulation programs, GUINEA-PIG and CAIN, and the influence of the International Linear Collider (ILC) beam parameter choices on the background in the micro–vertex detector (VD) induced by direct hits. One of the processes involved in incoherent pair creation (IPC) is
Rimbault, C., Bambade, P., Mönig, K., Schulte, D.   +3 more
openaire   +3 more sources