Lattice optimization of a fourth-generation synchrotron radiation light source in Novosibirsk

We discuss the choice of the magnetic lattice and parameter optimization of the fourth-generation light source SKIF (Russian acronym for Siberian Circular Photon Source) under construction in Novosibirsk. The study compares several basic lattice cells to procure one with low emittance and large dyna...

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Bibliographic Details
Published inPhysical review. Accelerators and beams Vol. 24; no. 12; p. 120704
Main Authors Baranov, G., Bogomyagkov, A., Morozov, I., Sinyatkin, S., Levichev, E.
Format Journal Article
LanguageEnglish
Published College Park American Physical Society 01.12.2021
Subjects
Apertures
Circumferences
Emittance
Lattice design
Light sources
Optimization
Synchrotron radiation
Synchrotrons
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Summary:We discuss the choice of the magnetic lattice and parameter optimization of the fourth-generation light source SKIF (Russian acronym for Siberian Circular Photon Source) under construction in Novosibirsk. The study compares several basic lattice cells to procure one with low emittance and large dynamic aperture. The result is a developed lattice of SKIF with 72 pm natural emittance (at zero beam current and absent betatron coupling) at 3 GeV beam energy and 476 m circumference. Only two families of sextupoles provide horizontal and vertical dynamic apertures of 12 mm and 3.5 mm, respectively, and energy acceptance more than 5%. To check the potential of the found solution, we used slightly modified SKIF lattice to design 6 GeV light source and reached 33 pm natural emittance for 1075 m circumference with 40 straight sections. Again, only two sextupole families ensure sufficient dynamic aperture (7 mm horizontal and 4 mm vertical) and energy acceptance more than 5% for simple efficient injection and sufficient beam lifetime.
ISSN:2469-9888
2469-9888
DOI:10.1103/PhysRevAccelBeams.24.120704