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Fabrication Technologies of the High Gradient Accelerator Structures at 100MV/M Range

Description: A CERN-SLAC-KEK collaboration on high gradient X-band structure research has been established in order to demonstrate the feasibility of the CLIC baseline design for the main linac stably operating at more than 100 MV/m loaded accelerating gradient. Several prototype CLIC structures were successfully fabricated and high power tested. They operated at 105 MV/m with a breakdown rate that meets the CLIC linear collider specifications of < 5 x 10{sup -7}/pulse/m. This paper summarizes the fabrication technologies including the mechanical design, precision machining, chemical cleaning, diffusion bonding as well as vacuum baking and all related assembly technologies. Also, the tolerances control, tuning and RF characterization will be discussed.
Date: July 3, 2012
Creator: Wang, Juwen; /SLAC; Lewandowski, James; /SLAC; Van Pelt, John; /SLAC et al.
Partner: UNT Libraries Government Documents Department

Fabrication of DDS-3, an 11.4 GHz damped-detuned structure

Description: A 1.8 m X-band Damped-Detuned Structure (DDS-3) has been fabricated and characterized as part of the structure development program towards a TeV-scale e + e - linear collider. In this joint venture, the copper cells were precision-fabricated by LLNL, diffusion-bonded into a monolithic structure by KEK, and the structure completed and tested by SLAC. The overall process constitutes a baseline for future high-volume structure manufacture.
Date: March 1, 1999
Creator: Adolphsen, C; Asano, K; Elmer, J; Funchasi, Y; Higashi, Y; Higo, T et al.
Partner: UNT Libraries Government Documents Department