Speaker
Description
The Continuous Electron Beam Accelerator Facility at Jefferson Lab recently underwent a significant injector upgrade to meet the stringent beam quality requirements of upcoming physics experiments and to enhance system reliability. Key modifications include replacing the 130 kV DC photo-cathode gun with a 200 kV version and installing a new SRF booster consisting of 2-cell and 7-cell cavities. This new booster architecture accommodates a broad range of injection energies (130 keV to >300 keV) while simplifying the initial bunching and acceleration stages. The design choices and operational challenges addressed during this upgrade offer valuable insights for other electron injectors aiming to increase simplicity, flexibility, and reliability. Supporting beamline components, including Wien filters and magnets, were similarly upgraded to scale with the higher beam energy. Over the past year, the upgraded injector has met experimental physics requirements, creating beams for four experimental halls simultaneously with >85% availability. This presentation discusses the design philosophy, beam dynamics simulations, hardware performance, and operational beam characterization results.
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