Design and demonstration of a distributed-coupling linear accelerator structure

We present a topology for linear accelerators (linacs) in which the power is distributed to the cavities through a waveguide with periodic apertures that guarantees the correct phases and amplitudes along the structure length. Unlike conventional traveling and standing-wave linacs, the presented top...

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Bibliographic Details
Published in:Physical review. Accelerators and beams 2020-09, Vol.23 (9), p.092001, Article 092001
Main Authors: Tantawi, Sami, Nasr, Mamdouh, Li, Zenghai, Limborg, Cecile, Borchard, Philipp
Format: Article
Language:English
Subjects:
Accelerators
Accelerators & Beams
Coupling
High-energy accelerators & colliders
Holes
Linear accelerators
Low temperature
PARTICLE ACCELERATORS
Physical Systems
Power consumption
Pulsed-power accelerators
Shape optimization
Standing waves
Topology
Waveguides
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Summary:We present a topology for linear accelerators (linacs) in which the power is distributed to the cavities through a waveguide with periodic apertures that guarantees the correct phases and amplitudes along the structure length. Unlike conventional traveling and standing-wave linacs, the presented topology allows the cavity shapes to be designed without the constraints applied to the coupling between cells to transfer power from one cell to the next. Therefore, the topology permits more degrees of freedom for the optimization of individual cavity shapes in comparison with conventional linacs. The cavity shapes can be optimized for power consumption and efficiency, and/or the manipulation of the surface fields for high gradient operation. This topology also provides a possibility for low-temperature manufacturing techniques that prevent the annealing of the material during typical brazing processes; hence, the material could retain its original properties such as hardness. We present a design and an experimental demonstration of this linac.
ISSN:2469-9888
2469-9888
DOI:10.1103/PhysRevAccelBeams.23.092001