The Form Factor Program with the Super BigBite Spectrometer (SBS)

The Super Bigbite Spectrometer (SBS) has been developed for precise measurements of the proton electric form factor (G_E^P) and the neutron electric and magnetic form factors (G_Eⁿ and G_Mⁿ), at a momentum transfer higher than ever previously explored. These form factor measurements will be made in a suite of experiments to be run in Hall A at the Thomas Jefferson National Accelerator Facility (JLab). The SBS apparatus consists of a new, large acceptance dipole magnet, and new detector packages which are currently under construction. The present G_E^P form factor measurements are limited at a momentum transfer of Q² = 3.4 (GeV/c)². The new experiments will extend the Q² range up to 10 (GeV/c)², while significantly improving the precision of the measurements. An overview of the SBS apparatus and the physics measurements of the G_E^P , G_Mⁿ and G_Eⁿ will be presented.