Touschek- and Gas Scattering Lifetime Investigations in the MAX IV 3 GeV Storage Ring

Detta är en Master-uppsats från Lunds universitet/Fysiska institutionen; Lunds universitet/MAX IV-laboratoriet

Sammanfattning: The MAX IV 3 GeV storage ring is a fourth-generation electron synchrotron. At the time of writing in May 2017, it is the lowest emittance light source in the world. To study its performance is of foremost importance for the MAX IV Laboratory, its users and for upcoming synchrotrons. In this thesis, the MAX IV 3 GeV beam lifetime has been divided into its different components by experiments using in-vacuum copper blade scrapers. Touschek- and gas scattering lifetimes have been measured. The overall lattice momentum acceptance has been estimated by comparing measured Touschek scattering lifetimes with simulations. Observed and calculated current decays have been compared, based on a model using diverse types of decays for different lifetimes.

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