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Some small-emittance light-source lattices with multi-bend achromats

Eriksson, Mikael LU ; Lindgren, Lars-Johan LU ; Sjöström, Magnus LU ; Wallén, Erik LU ; Rivkin, L. and Streun, A. (2008) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 587(2-3). p.221-226
Abstract
Two examples of low-emittance light-source lattices are discussed. Both use similar building blocks consisting of 7-bend achromats. The small emittances generated by these lattices are further reduced by the introduction of insertion devices (IDs), resulting in beam emittance values ranging from 0.2 to 0.9 nm rad, depending on the number of achromats chosen. The two examples discussed here are rings with 12 and 20 achromats. The performances of any intermediate number of achromats can easily be estimated. A higher number of achromats of this type seems to result in an uncomfortably small dynamic aperture. The Touschek losses and Intra Beam Scattering (IBS) effect are calculated together with some means to reduce their impact. To calculate... (More)
Two examples of low-emittance light-source lattices are discussed. Both use similar building blocks consisting of 7-bend achromats. The small emittances generated by these lattices are further reduced by the introduction of insertion devices (IDs), resulting in beam emittance values ranging from 0.2 to 0.9 nm rad, depending on the number of achromats chosen. The two examples discussed here are rings with 12 and 20 achromats. The performances of any intermediate number of achromats can easily be estimated. A higher number of achromats of this type seems to result in an uncomfortably small dynamic aperture. The Touschek losses and Intra Beam Scattering (IBS) effect are calculated together with some means to reduce their impact. To calculate this impact, certain technical solutions are assumed, which are described. Other technical solutions could naturally be chosen. The impact of emittance on brilliance is also discussed and the brilliance curves for the two cases are presented and compared with the zero-emittance case ("ultimate source"). (C) 2008 Elsevier B.V. All rights reserved. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
synchrotron light source, lattice, small emittance, achromat
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
587
issue
2-3
pages
221 - 226
publisher
Elsevier
external identifiers
  • wos:000255238600006
  • scopus:40849095833
ISSN
0167-5087
DOI
10.1016/j.nima.2008.01.068
language
English
LU publication?
yes
id
0fbb4db9-96de-46d2-8aa3-a50bd0051704 (old id 1416523)
date added to LUP
2009-06-16 14:40:30
date last changed
2017-10-01 04:29:52
@article{0fbb4db9-96de-46d2-8aa3-a50bd0051704,
  abstract     = {Two examples of low-emittance light-source lattices are discussed. Both use similar building blocks consisting of 7-bend achromats. The small emittances generated by these lattices are further reduced by the introduction of insertion devices (IDs), resulting in beam emittance values ranging from 0.2 to 0.9 nm rad, depending on the number of achromats chosen. The two examples discussed here are rings with 12 and 20 achromats. The performances of any intermediate number of achromats can easily be estimated. A higher number of achromats of this type seems to result in an uncomfortably small dynamic aperture. The Touschek losses and Intra Beam Scattering (IBS) effect are calculated together with some means to reduce their impact. To calculate this impact, certain technical solutions are assumed, which are described. Other technical solutions could naturally be chosen. The impact of emittance on brilliance is also discussed and the brilliance curves for the two cases are presented and compared with the zero-emittance case ("ultimate source"). (C) 2008 Elsevier B.V. All rights reserved.},
  author       = {Eriksson, Mikael and Lindgren, Lars-Johan and Sjöström, Magnus and Wallén, Erik and Rivkin, L. and Streun, A.},
  issn         = {0167-5087},
  keyword      = {synchrotron light source,lattice,small emittance,achromat},
  language     = {eng},
  number       = {2-3},
  pages        = {221--226},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment},
  title        = {Some small-emittance light-source lattices with multi-bend achromats},
  url          = {http://dx.doi.org/10.1016/j.nima.2008.01.068},
  volume       = {587},
  year         = {2008},
}