Paper | Title | Other Keywords | Page |
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TUPA02 | Characterization of Octupole Elements for IOTA | octupole, alignment, dipole, optics | 351 |
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Funding: Work partially supported by the US Department of Energy, Office of Science, High Energy Physics under Cooperative Agreement award number DE-SC0018362 and Michigan State University. The Integrable Optics Test Accelerator (IOTA) is a research storage ring constructed and operated at Fermilab to demonstrate the advantages of nonlinear integrable lattices. One of the nonlinear lattice configurations with one integral of motion is based on a string of short octupoles. The results of the individual magnet’s characterizations, which were necessary to determine their multipole composition and magnetic centers, are presented. This information was used to select and align the best subset of octupoles for the IOTA run 4. |
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DOI • | reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-TUPA02 | ||
About • | Received ※ 03 August 2022 — Revised ※ 08 August 2022 — Accepted ※ 09 August 2022 — Issue date ※ 08 September 2022 | ||
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TUPA83 | Derivative-Free Optimization of Multipole Fits to Experimental Wakefield Data | wakefield, simulation, experiment, electron | 523 |
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Funding: Department of Energy DE-SC0017648. A method to deduce the transverse self-wakefields acting on a beam, based only on screen images, is introduced. By employing derivative-free optimization, the relatively high-dimensional parameter space can be efficiently explored to determine the multipole components up to the desired order. This technique complements simulations, which are able to directly infer the wakefield composition. It is applied to representative simulation results as a benchmark and also applied to experimental data on skew wake observations from dielectric slab structures. |
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DOI • | reference for this paper ※ doi:10.18429/JACoW-NAPAC2022-TUPA83 | ||
About • | Received ※ 02 August 2022 — Revised ※ 21 August 2022 — Accepted ※ 26 August 2022 — Issue date ※ 11 September 2022 | ||
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