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Title: Two-Beam Instability in Electron Cooling

Abstract

The drift motion of cooling electrons makes them able to respond to transverse perturbations of a cooled ion beam. This response may lead to dipole or quadrupole transverse instabilities at specific longitudinal wave numbers. While the dipole instabilities can be suppressed by a combination of the Landau damping, machine impedance, and the active damper, the quadrupole and higher order modes can lead to either emittance growth, or a lifetime degradation, or both. The growth rates of these instabilities are strongly determined by the machine x-y coupling. Thus, tuning out of the coupling resonance and/or reduction of the machine coupling can be an efficient remedy for these instabilities.

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
892388
Report Number(s):
FERMILAB-PUB-06-071-AD
TRN: US0701114
DOE Contract Number:
AC02-76CH03000
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; DIPOLES; ELECTRON COOLING; ELECTRONS; IMPEDANCE; INSTABILITY; ION BEAMS; LANDAU DAMPING; LIFETIME; QUADRUPOLES; RESONANCE; TUNING; Accelerators

Citation Formats

Burov, Alexey V., and /Fermilab. Two-Beam Instability in Electron Cooling. United States: N. p., 2006. Web. doi:10.1103/PhysRevSTAB.9.120101.
Burov, Alexey V., & /Fermilab. Two-Beam Instability in Electron Cooling. United States. doi:10.1103/PhysRevSTAB.9.120101.
Burov, Alexey V., and /Fermilab. 2006. "Two-Beam Instability in Electron Cooling". United States. doi:10.1103/PhysRevSTAB.9.120101. https://www.osti.gov/servlets/purl/892388.
@article{osti_892388,
title = {Two-Beam Instability in Electron Cooling},
author = {Burov, Alexey V. and /Fermilab},
abstractNote = {The drift motion of cooling electrons makes them able to respond to transverse perturbations of a cooled ion beam. This response may lead to dipole or quadrupole transverse instabilities at specific longitudinal wave numbers. While the dipole instabilities can be suppressed by a combination of the Landau damping, machine impedance, and the active damper, the quadrupole and higher order modes can lead to either emittance growth, or a lifetime degradation, or both. The growth rates of these instabilities are strongly determined by the machine x-y coupling. Thus, tuning out of the coupling resonance and/or reduction of the machine coupling can be an efficient remedy for these instabilities.},
doi = {10.1103/PhysRevSTAB.9.120101},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2006,
month = 4
}