First Measurements of Nonlinear Decoherence in the IOTA Ring

Conference · Mon Jun 24 04:00:00 EDT 2019

DOI:https://doi.org/10.18429/JACoW-IPAC2019-WEPTS070· OSTI ID:1843456

Hall, Christopher ^[1]; Bruhwiler, David ^[1]; Edelen, Jonathan ^[1]; Kuklev, Nikita ^[2]; Romanov, Alexander ^[3]; Valishev, Alexander ^[3]

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1. RadiaSoft, Boulder
2. Chicago U.
3. Fermilab

The Integrable Optics Test Accelerator (IOTA), at Fermi National Laboratory is aimed at testing nonlinear optics for the next generation of high intensity rings. Through use of a special magnetic element the ring is designed to induce a large tune spread with amplitude while maintaining integrable motion. This will allow for the suppression of instabilities in high-intensity beams without significant reduction in dynamic aperture. One important aspect of this is the nonlinear decoherence that occurs when a beam is injected off axis or receives a transverse kick while circulating in the ring. This decoherence has been studied in detail, with simulations, for protons in IOTA both with and without space-charge. However, it has yet to be demonstrated experimentally. During the first phase of the IOTA experimental program, the ring is operated with 100 MeV electrons, allowing for the study of nonlinear optics without the complications introduced by space charge. Here we present measurements taken during the IOTA commissioning, and an analysis of the results.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1843456
• Report Number(s): FERMILAB-CONF-19-804-AD; oai:inspirehep.net:1745542
• Country of Publication: United States
• Language: English

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