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Conference Poster Year : 2007

Non-linear field generated by a distribution of conductors in a spiral FFAG

Abstract

FFAGs accelertors re-appeared fifteen years ago to be of interest for new accelerator projects. These synchrotrons allow fast accceleration because of the fixed field magnets. To compensate the beam trajectory radius increase which would happen, the radial gradient follows a non-linear law B_0(r/R_0)^k. Amongst several methods, in the frame of the RACCAM project in France, a scaling spiral FFAG ring is developed for medical applications. Magnets have spiral edges to make beam focusing, and here is described the design study for flat horizontal poles that allow a low variation of the vertical tune. This study presents how to produce B_0(r/R_0)^k with distributed polar conductors.
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Dates and versions

in2p3-00172848 , version 1 (18-09-2007)

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B. Autin, E. Froidefond. Non-linear field generated by a distribution of conductors in a spiral FFAG. 20th Biennial Conference on Magnet Technology - MT20, Aug 2007, Philadelphia, Pennsylvania, United States. IEEE, 18, pp.899-903, 2008, ⟨10.1109/TASC.2008.920804⟩. ⟨in2p3-00172848⟩
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