Speaker
Description
PERLE is a high-current, multi-turn Energy Recovery Linac currently entering its construction phase, being developed as a demonstrator for advanced ERL technology and future high-power electron facilities. The staged construction and commissioning schedule foresees single-turn energy recovery in 2029, with full three-turn operation planned for 2031. Achieving these milestones requires an optics and beam-dynamics strategy that accommodates strong space-charge effects in the injector/merger, coherent synchrotron radiation in the arcs, and very tight loss tolerances characteristic of high-current ERLs.
We present PERLE’s current status and the latest optics design for the one-turn commissioning mode and the nominal three-turn configuration. The lattices are evaluated using multi-physics tracking to assess collective effects, error sensitivity, and operational stability. Particular emphasis is placed on identifying workable settings that support high-current transport and robust energy recovery across the different operational stages.
This contribution provides an update on construction and commissioning timelines, outlines the main beam-dynamics challenges for staged operation, and summarizes recent progress in optics development. The results contribute to defining the operational basis for PERLE and provide insight relevant to the design studies of future multi-turn ERL facilities.
Funding Agency
This work received government funding managed by the Agence Nationale de la Recheche (ANR) in the France 2030 framework (reference: ANR-24-RRII-0001).
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