The SBS-G_e^pExperiment and its Novel Detectors

Nucleon elastic form factors give important insights into the neutron structure. The Super Bigbite Spectrometer (SBS) program at Jefferson Lab will measure the elastic nucleon form factors at high momentum transfer, including a measurement of the proton electromagnetic form factor G_E^p at up to 12 GeV². Little is known about the proton form factor at high momentum transfer, no data has been measured for G_E^p at Q² > 8.5 GeV². The approved experiment, E12-07-109, will use the recoil polarization technique and aims to make precision measurements at Q² = 5.5, 8, and 12 GeV² and will start in the fall of 2024. Work is underway to construct a new electromagnetic calorimeter capable of withstanding the high radiation load necessary for a precision measurement. The 1656 lead glass crystals will be placed in a custom oven capable of annealing the crystals at 220 deg C. An overview of the SBS-G_E^p experimental method and the development of multiple novel detectors, including the progress of the electromagnetic calorimeter and the completion of a small-scale test will be discussed.