Physics issues in diffraction limited storage ring design

doi:10.1007/s11433-012-4696-7

Physics issues in diffraction limited storage ring design

2012-03-19

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DOI：10.1007/s11433-012-4696-7

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Diffraction limited electron storage ring is considered a promising candidate for future light sources, whose main characteristics are higher brilliance, better transverse coherence and better stability. The challenge of diffraction limited storage ring design is how to achieve the ultra low beam emittance with acceptable nonlinear performance. Effective linear and nonlinear parameter optimization methods based on Artificial Intelligence were developed for the storage ring physical design. As an example of application, partial physical design of HALS (Hefei Advanced Light Source), which is a diffraction limited VUV and soft X-ray light source, was introduced. Severe emittance growth due to the Intra Beam Scattering effect, which is the main obstacle to achieve ultra low emittance, was estimated quantitatively and possible cures were discussed. It is inspiring that better performance of diffraction limited storage ring can be achieved in principle with careful parameter optimization.

Keywords:

diffraction limited storage ring

lattice design

dynamic aperture

artificial intelligence

intra beam scattering

Physics issues in diffraction limited storage ring design

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