Impedance Measurement Setup for Higher-Order Mode Studies in NLC Accelerator Structures with the Wire Method
N. Baboi, R. M. Jones, J. W. Wang, G. B. Bowden, V. A. Dolgashev, J. Lewandowski, S. G. Tantawi, P. B. Wilson
Abstract
Dipole modes are the main cause of transverse emittance dilution in the Japanese Linear Collider / Next Linear Collider (JLC/NLC). A diagnostic setup has been built in order to investigate them. The method is based on using a coaxial wire to excite and measure electromagnetic modes of accelerating structures. This method can offer a more efficient and less expensive procedure than the ASSET facility. Initial measurements have been made and are presented in this paper.
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