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Primary beam steering due to field leakage from superconducting SHMS magnets

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Published 5 November 2014 © 2014 IOP Publishing Ltd and Sissa Medialab srl
, , Citation M.H. Moore et al 2014 JINST 9 T11002 DOI 10.1088/1748-0221/9/11/T11002

1748-0221/9/11/T11002

Abstract

Simulations of the magnetic fields from the Super High Momentum Spectrometer in Hall C at Thomas Jefferson National Accelerator Facility show significant field leakage into the region of the primary beam line between the target and the beam dump. Without mitigation, these remnant fields will steer the unscattered beam enough to limit beam operations at small scattering angles. Presented here are magnetic field simulations of the spectrometer magnets and a solution using optimal placement of a minimal amount of shielding iron around the beam line.

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10.1088/1748-0221/9/11/T11002