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The dual slot resonance linac (DSRL) is a novel method of providing enhanced coupling to a coupled cavity linac system, resulting in very strong coupling. For the 11-cell, 2856 MHz structure described here, the accelerator mode bandwidth exceeds 700 MHz, about an order of magnitude greater than many traditional side-coupled and axis-coupled linacs. The strong coupling promotes phase and amplitude stabilization, and offers decreased sensitivity to fabrication errors. We describe the construction, tuning, and RF conditioning of the prototype structure.
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