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Online optimization of storage ring nonlinear beam dynamics

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arxiv 1502.07799 v1 pith:QWBDEZRJ submitted 2015-02-27 physics.acc-ph

classification physics.acc-ph
keywords optimizationstorageapproachonlineaperturebeamdynamicdynamics
verification ladder T0 review T1 audit T2 compute T3 formal
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We propose to optimize the nonlinear beam dynamics of existing and future storage rings with direct online optimization techniques. This approach may have crucial importance for the implementation of diffraction limited storage rings. In this paper considerations and algorithms for the online optimization approach are discussed. We have applied this approach to experimentally improve the dynamic aperture of the SPEAR3 storage ring with the robust conjugate direction search method and the particle swarm optimization method. The dynamic aperture was improved by more than 5 mm within a short period of time. Experimental setup and results are presented.

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    An autonomous loop lets a language-model agent write and refine RF beam-capture procedures in an ALS-U accumulator-ring simulator, improving on the published expert procedure by roughly a factor of ten.

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