Chromatic effects in quadrupole scan emittance measurements

A. Mostacci, M. Bellaveglia, E. Chiadroni, A. Cianchi, M. Ferrario, D. Filippetto, G. Gatti, C. Ronsivalle

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Abstract

A reliable transverse emittance measurement for high-brightness electron beams is of utmost importance for the successful development of fourth generation light sources and for the beam transport in plasma-based accelerators. When the beam exhibits a significant energy spread, typical quadrupole scan emittance measurements may be affected depending on the beam properties and on the quadrupoles arrangement. The emittance degradation induced by chromatic effects in measurements involving magnetic lattices is evaluated analytically for different configurations. Analytical and numerical calculations compared with measurements have been used to evaluate the consequent error on the emittance value measured for single and double quadrupole schemes and for typical operating conditions at the SPARC facility. Published by the American Physical Society under the terms of the http://creativecommons.org/licenses/by/ 3.0/Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Original languageEnglish
Article number082802
Pages (from-to)-
JournalPhysical Review Special Topics - Accelerators and Beams
Volume15
Issue number8
DOIs
Publication statusPublished - 23 Aug 2012
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)
  • Surfaces and Interfaces

Cite this

Mostacci, A., Bellaveglia, M., Chiadroni, E., Cianchi, A., Ferrario, M., Filippetto, D., ... Ronsivalle, C. (2012). Chromatic effects in quadrupole scan emittance measurements. Physical Review Special Topics - Accelerators and Beams, 15(8), -. [082802]. https://doi.org/10.1103/PhysRevSTAB.15.082802