On Compensating Tune Spread Induced by Space Charge in Bunched Beams

Abstract

Space charge effects play significant role in modern-day accelerators. These effects frequently constrain attainable beam parameters in an accelerator - or - in an accelerator chain. They also could limit the luminosity of hadron colliders operating either at low energies or with a sub-TeV high brightness hadron beams. A number of schemes for compensating space charge effects in a coasting (e.g. continuous) hadron beam were proposed and some of them had been tested. But all of these methods do not address the issue of tune spread compensation of a bunched hadron beam, e.g. the tune shift dependence on the longitudinal position inside the bunch. In this paper we propose and evaluate a novel idea of using a co-propagating electron bunch with miss-matched longitudinal velocity to compensate the space charge induced tune-shift and tune spread. We present a number of practical examples of such system.

arXiv comment40 pages, 12 figures

References in corpus (3)

• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• Tevatron Electron Lenses: Design and Operation
• Transverse Instabilities of Coasting Beams with Space Charge

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• IOTA (Integrable Optics Test Accelerator): Facility and Experimental Beam Physics Program
• Plasma-Cascade Instability- theory, simulations and experiment
• Interplay of space charge, intrabeam scattering and synchrotron radiation in the Compact Linear Collider damping rings
• Pulsed Electron Lenses for Space Charge Mitigation
• Landau damping of transverse head-tail instabilities with a pulsed electron lens in hadron synchrotrons
• Proton Dynamics Scenarios in the Integrable Optics Test Accelerator (IOTA) at Fermilab