Marx Based Modulator for ILC

79770S The International Linear Collider (ILC) will require hundreds of klystron pulsed power modulators that must operate in the very long pulse-width range (1 to 2 millisecond). Long pulse width modulators typically require large capacitive energy storage banks to prevent voltage droop, and large, costly pulse transformers. Marx-generator-based modulators have the potential to be effective for this application; however, little work has been done to tailor this type of modulator for long pulse widths. This project will develop a Marx-based modulator that is tailored to meet the specific requirements of the ILC. The approach will focus on a novel combination of Marx cells with unique control technology, which will dramatically reduce the modulator¿s capacitive energy storage while still meeting the precision pulse regulation required. In Phase I, circuit simulations and analyses will be performed to optimize the configuration of the Marx-based modulator. Key components will be defined, and the components will be evaluated to determine their suitability for this application. A conceptual design and a cost model will be developed for the Marx cells, regulation circuits, and the entire modulator. Commercial Applications and Other Benefits as described by the awardee: The new Marx-based modulator should provide a cost-effective solution for the International Linear Collider. In addition, this new long pulse modulator has important commercial applications, including its use in radiation processing equipment for materials processing, disinfestation, food irradiation, and other electron beam processing industries where long pulse, high average power sources are required.