Design, fabrication and measurement of the first rounded damped detuned accelerator structure (RDDS1)

Details Design, fabrication and measurement of the first rounded damped detuned accelerator structure (RDDS1) Design, fabrication and measurement of the first rounded damped detuned accelerator structure (RDDS1)

2000-09-06

arxiv.org/abs/physics/0009025v1

eConf C000821:TUA03,2000

Physics

Accelerator Physics

For LINAC2000 (TUA03)

Scientific paper

As a joint effort in the JLC/NLC research program, we have developed a new type of damped detuned accelerator structure with optimized round-shaped cavities (RDDS). This paper discusses some important R&D aspects of the first structure in this series (RDDS1). The design aspects covered are the cell design with sub-MHz precision, HOM detuning, coupling and damping technique and wakefield simulation. The fabrication issues covered are ultra-precision cell machining with micron accuracy, assembly and diffusion bonding technologies to satisfactorily meet bookshelf, straightness and cell rotational alignment requirements. The measurements described are the RF properties of single cavities and complete accelerator section, as well as wakefields from the ASSET tests at SLAC. Finally, future improvements are also discussed.

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