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Distributed drive linear accelerators (DDLs), in which each accelerating cell is independently powered, offer the flexibility to set the phase and amplitude of the RF fields in each cavity individually. In the limiting case of a linac composed entirely of independently-driven single-cell cavities, the RF power required per individual cavity can be a good match to the capabilities of solid-state amplifiers. For these reasons, the possibility of upgrading the current coupled cavity linac (CCL) in the LANSCE accelerator at Los Alamos National Laboratory to a DDL architecture is being investigated. Here we report results from cell profile optimizations and beam dynamics simulations carried out to study the potential advantages of a DDL architecture in the LANSCE accelerator.
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