Improved High-Current Injector Design
Agency / Branch:
DOD / NAVY
"With the achievement of 2.1 kW CW I R operation and an upgrade to10 kW in progress, free-electron lasers (FEL) are now a serious option for high-power, military and commercial applications. As specifically identified in the recent "Department of DefenseLaser Master Plan", the key technology issue on the path to high-power FEL deployment is the demonstration of reliable, high-brightness, photocathode injector operation. A DC gun/superconducting accelerator combination provides the most promising and mostmature path to efficient, weapon-level electron beam power. One of the primary issues identified with this type of gun is beam quality degradation for operation at weapon system charge levels that approach 1 nC per bunch or higher. Longitudinal phasespace aberrations set in that can significantly reduce the lasing efficiency of the FEL. We are proposing to design a doubly resonant first accelerating cavity to both correct the development of this aberration and accelerate the electron beam for currentlevels that approach one ampere. The proposed design will represent a proof-of-principle demonstration. The discriminating attributes of FELs are their wide-band tunability, their implicit potential for very high-power operation and the intrinsicpicosecond pulse structure that promises superior performance for certain applications. Significant military FEL directed energy weapon (DEW), countermeasure and communication applications ex
Small Business Information at Submission:
Advanced Energy Systems, Inc.
27 Industrial Blvd, Unit E Medford, NY 11763
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