The Department of Defense (DoD) is seeking proposals for the development of a compact, high current, L-band modulator/buncher with broad bandwidth capability for an X-band accelerator. The modulator/buncher should be designed to provide L-band modulated electron beams of arbitrary waveform to the X-band accelerator, with consistent capture efficiency across a variety of lower frequency modulated electron beams. The design should include a transition into X-band cavities for integration with the accelerator. The project will involve extensive modeling, simulation, and theory, and Phase II awardees will fabricate the modulator and integrate it with an X-band accelerator for testing. Phase III will involve refining the design, scaling it to S-band, and potentially integrating it onto a ruggedized platform for field testing. The project falls under the Directed Energy critical technology area and is restricted under export control laws. The solicitation is open until October 18, 2023. For more information, visit the solicitation link.