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Transverse coherent instabilities in storage rings with harmonic cavities

Cullinan, F. J.; Nagaoka, Ryutaro; Skripka, G. LU and Fernandes Tavares, Pedro LU (2016) 7th International Particle Accelerator Conference, IPAC 2016 In IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference p.1061-1064
Abstract

Many current and future synchrotron light sources employ harmonic cavities to lengthen the electron bunches in order to reduce the emittance dilution caused by intrabeam scattering. In some cases, the harmonic cavities may be tuned to fulfill the flat potential condition. For this condition, a large increase in the threshold currents of transverse coupled-bunch instabilities has been predicted and recently, the physical content behind this stabilisation has been better understood. With this in mind, an investigation is made into the effectiveness of harmonic cavities for different machines. Frequency domain computations employing Laclare's eigenvalue method have been used to investigate the influence of several machine parameters and... (More)

Many current and future synchrotron light sources employ harmonic cavities to lengthen the electron bunches in order to reduce the emittance dilution caused by intrabeam scattering. In some cases, the harmonic cavities may be tuned to fulfill the flat potential condition. For this condition, a large increase in the threshold currents of transverse coupled-bunch instabilities has been predicted and recently, the physical content behind this stabilisation has been better understood. With this in mind, an investigation is made into the effectiveness of harmonic cavities for different machines. Frequency domain computations employing Laclare's eigenvalue method have been used to investigate the influence of several machine parameters and the results are presented.

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publication status
published
subject
in
IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference
pages
4 pages
publisher
Joint Accelerator Conferences Website (JACoW)
conference name
7th International Particle Accelerator Conference, IPAC 2016
external identifiers
  • scopus:85015272528
ISBN
9783954501472
language
English
LU publication?
yes
id
6d5e1e6a-8045-41e8-b358-a79f5604fb5a
alternative location
http://accelconf.web.cern.ch/accelconf/ipac2016/papers/tuoab03.pdf
date added to LUP
2017-03-30 13:56:41
date last changed
2017-09-19 16:48:11
@inproceedings{6d5e1e6a-8045-41e8-b358-a79f5604fb5a,
  abstract     = {<p>Many current and future synchrotron light sources employ harmonic cavities to lengthen the electron bunches in order to reduce the emittance dilution caused by intrabeam scattering. In some cases, the harmonic cavities may be tuned to fulfill the flat potential condition. For this condition, a large increase in the threshold currents of transverse coupled-bunch instabilities has been predicted and recently, the physical content behind this stabilisation has been better understood. With this in mind, an investigation is made into the effectiveness of harmonic cavities for different machines. Frequency domain computations employing Laclare's eigenvalue method have been used to investigate the influence of several machine parameters and the results are presented.</p>},
  author       = {Cullinan, F. J. and Nagaoka, Ryutaro and Skripka, G. and Fernandes Tavares, Pedro},
  booktitle    = {IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference},
  isbn         = {9783954501472},
  language     = {eng},
  pages        = {1061--1064},
  publisher    = {Joint Accelerator Conferences Website (JACoW)},
  title        = {Transverse coherent instabilities in storage rings with harmonic cavities},
  year         = {2016},
}