Primary Beam Steering Due to Field Leakage from Superconducting SHMS   Magnets
  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. 
Michael H. Moore, Buddhini P. Waidyawansa, Silviu Covrig, Roger   Carlini, Jay Benesch
physics.acc-ph nucl-ex