Work Environment: Outdoors, In confined space, heights, Underground, Working alone, Working overtime or irregular schedule, Domestic/foreign travel, operation of motor vehicles, Work with weapons or explosives, Work with vibrating equipment/machinery, Work near machinery with moving parts, toxic chemicals, irritant chemicals, dusts or powders, sprays, mists, or vapors, fumes, carcinogens, Hearing protection, Gloves or hand protection, Safety shoes or protective foot-gear, Headgear or head protection, safety glasses or eye protection, face shield or facial protection, Mask or respirator. Core responsibilities of the group include: (1) designing, modeling, and verifying beam physics in both accelerators, (2) advancing the science and technology of beam-target interactions, (3) designing, modeling, and verifying relativistic electron diodes, (4) designing and fielding diagnostics including: pulsed power and non-invasive beam and plasma diagnostics, (5) system engineering support for the controls, mechanical, and pulsed power and diagnostic systems for both accelerators, (6) operating, maintaining, and upgrading both accelerators, and (7) Research and Development necessary for optimization and upgrades of the accelerators.