Advanced

High-chromaticity Optics for the MAX IV 1.5 GeV Storage Ring

Olsson, Teresia LU and Leemann, Simon LU (2014) 5th International Particle Accelerator Conference (IPAC 2014) In Proceedings of IPAC’14 p.3053-3055
Abstract
The MAX IV facility currently under construction in Lund, Sweden will include a 1.5 GeV storage ring. To prevent head-tail instability, the negative natural chromaticities of the MAX IV 1.5 GeV storage ring have been corrected to positive values using sextupole gradients in the focusing quadrupoles along with dedicated sextupole magnets. To allow adjustment of the chromaticity correction, weak correction sextupoles have been inserted into the lattice. A high-chromaticity optics has been developed for the MAX IV 1.5 GeV storage ring in case instability issues arise during commissioning. Two chromatic sextupole families were used to correct the linear chromaticity. The tune footprint was then tailored using the remaining two sextupole... (More)
The MAX IV facility currently under construction in Lund, Sweden will include a 1.5 GeV storage ring. To prevent head-tail instability, the negative natural chromaticities of the MAX IV 1.5 GeV storage ring have been corrected to positive values using sextupole gradients in the focusing quadrupoles along with dedicated sextupole magnets. To allow adjustment of the chromaticity correction, weak correction sextupoles have been inserted into the lattice. A high-chromaticity optics has been developed for the MAX IV 1.5 GeV storage ring in case instability issues arise during commissioning. Two chromatic sextupole families were used to correct the linear chromaticity. The tune footprint was then tailored using the remaining two sextupole families with the goal of maximizing dynamic aperture and Touschek lifetime. This paper describes the recently developed high-chromaticity optics for the MAX IV 1.5 GeV storage ring and discusses performance limitations of the optics constrained by available gradient strength in the sextupoles. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Proceedings of IPAC’14
pages
3 pages
publisher
IPAC 2014
conference name
5th International Particle Accelerator Conference (IPAC 2014)
external identifiers
  • Scopus:84928350364
ISBN
978-3-95450-115-1
language
English
LU publication?
yes
id
10227653-3592-43c7-bd67-806a828014c4 (old id 4538946)
alternative location
http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/thpro075.pdf
date added to LUP
2014-07-18 09:53:59
date last changed
2016-10-13 04:46:34
@misc{10227653-3592-43c7-bd67-806a828014c4,
  abstract     = {The MAX IV facility currently under construction in Lund, Sweden will include a 1.5 GeV storage ring. To prevent head-tail instability, the negative natural chromaticities of the MAX IV 1.5 GeV storage ring have been corrected to positive values using sextupole gradients in the focusing quadrupoles along with dedicated sextupole magnets. To allow adjustment of the chromaticity correction, weak correction sextupoles have been inserted into the lattice. A high-chromaticity optics has been developed for the MAX IV 1.5 GeV storage ring in case instability issues arise during commissioning. Two chromatic sextupole families were used to correct the linear chromaticity. The tune footprint was then tailored using the remaining two sextupole families with the goal of maximizing dynamic aperture and Touschek lifetime. This paper describes the recently developed high-chromaticity optics for the MAX IV 1.5 GeV storage ring and discusses performance limitations of the optics constrained by available gradient strength in the sextupoles.},
  author       = {Olsson, Teresia and Leemann, Simon},
  isbn         = {978-3-95450-115-1},
  language     = {eng},
  pages        = {3053--3055},
  publisher    = {ARRAY(0x8350770)},
  series       = {Proceedings of IPAC’14},
  title        = {High-chromaticity Optics for the MAX IV 1.5 GeV Storage Ring},
  year         = {2014},
}