Correlated Head-Tail Instability in Beam-Beam Collisions
The study discusses the impact of the cross wake force and correlated head-tail instability in collisions with a large crossing angle. It delves into the mechanism of beam-beam instability, cross wake force induction, mode coupling, and particle tracking simulations. Design parameters and instabilit
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Overview of Electron/Positron Injector Linac Upgrades at KEK
The recent status of the Electron/Positron Injector Linac at KEK, presented by Kazuro Furukawa, highlights the mission to achieve 40 times higher luminosity in the SuperKEKB collider. The upgrades include low emittance, low energy spread injection beams with higher beam current, new high-current pho
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Overview of Positron Sources and High-Power Targets at KEK
Comparison of the positron source at KEK, from the TRISTAN era to current SuperKEKB operations, along with details on high-power targets used in various experiments. The discussion covers the development of positron sources for the ILC, the significance of SuperKEKB, and the challenges associated wi
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Highlights of the 65th ICFA Advanced Beam Dynamics Workshop
The 65th ICFA Advanced Beam Dynamics Workshop featured insightful presentations on high currents, luminosity, and beam behaviors. Topics included beam pipe scrubbing, non-gaussian beam tails, and detector backgrounds. Presenters discussed progress in FCCee design, focus magnets, and beampipe concept
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SuperKEKB: Advancements in Electron-Positron Collider Technology
SuperKEKB is a cutting-edge circular collider facility that aims to push the boundaries of high-energy physics research. From addressing cloud challenges to conducting instability simulations, the facility has made significant strides in understanding beam dynamics and electron cloud effects. The co
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Instabilities Simulation and Observation at KEKB Accelerator Review Committee
In the 21st KEKB Accelerator Review Committee, instabilities related to beam size blow-up, coupled bunch instability, and electron cloud effects were discussed based on simulations and observations. Various studies were presented, including threshold beam currents, electron density simulations, and
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SuperKEKB Linac RF Distribution System Upgrades Overview
The SuperKEKB Linac RF Distribution System underwent various upgrades and installations to enhance performance and functionality. These included improvements to the Injector Master Oscillator Phase Shifter, S-band Phase Shifter for DR Downstream, LLRF Control Unit, RF Monitoring systems, and more. A
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