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arXiv · 1912.02896

Foil Scattering Model for Fermilab Booster

J. Eldred·C. M. Bhat·S. Chaurize·V. Lebedev·S. Nagaitsev·K. Seiya·C. Y. Tan·R. J. Tesarek
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Abstract

At the Fermilab Booster, and many other proton facili-ties, an intense proton beam is accumulated by multi-turn injection of an H- beam through a stripping foil. The circu-lating beam scatters off the injection foil and large-angle Coulomb scattering leads to uncontrolled losses concen-trated in the first betatron period. We measure the foil scat-tering loss rate in the Fermilab Booster as a function of LINAC current, number of injection turns, and time on the injection foil. We find that current Booster operation has ~1% foil scattering loss and we make projections for the Proton Improvement Plan II (PIP-II) injector upgrade. Here we present the results from our recent beam measure-ments and a foil scattering model analyses.

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J. Eldred, C. M. Bhat, S. Chaurize, V. Lebedev, S. Nagaitsev, K. Seiya, C. Y. Tan, R. J. Tesarek. 2019-12-05. Foil Scattering Model for Fermilab Booster. https://arxiv.org/abs/1912.02896

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