MAX IV Emittance Reduction and Brightness Improvement

Simon Leemann, Mikael Eriksson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

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Abstract

With MAX IV construction well underway and beam commissioning expected to commence in July 2015, first studies have been launched on improving the optics of the MAX IV 3 GeV storage ring with the goal of further reducing the emittance from the baseline design (320 pm rad) towards 150 pm rad while improving the matching of the electron beam to insertion devices to further improve the resulting photon brightness. We report on progress in the development of this new optics as well as studies of the impact of many strong insertion devices on beam emittance. The latter is an crucial issue in ultralow-emittance rings where dipole radiation losses are low and hence the equilibrium emittance is determined to large extent by the insertion devices. Additionally, large stored current can lead to a significant increase of emittance via strong intrabeam scattering in both transverse and longitudinal planes. Hence, the anticipated insertion devices, stored bunch current, and RF cavity tuning all have to be taken into account when optimizing for highest brightness. We present initial results and sketch a path towards a first MAX IV upgrade.
Original languageEnglish
Title of host publicationProceedings of IPAC’14
PublisherJACoW Publishing
Pages1615-1617
Number of pages3
ISBN (Print)978-3-95450-115-1
Publication statusPublished - 2014
Event5th International Particle Accelerator Conference, IPAC 2014 - Dresden, GERMANY, Dresden, Germany
Duration: 2014 Jun 152014 Jun 20

Conference

Conference5th International Particle Accelerator Conference, IPAC 2014
Country/TerritoryGermany
CityDresden
Period2014/06/152014/06/20

Bibliographical note

Conference: http://www.ipac14.org

Proceedings: http://accelconf.web.cern.ch/AccelConf/IPAC2014/

Subject classification (UKÄ)

  • Physical Sciences
  • Natural Sciences

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