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Applied Physics Letters / Volume 97 / Issue 17 / PLASMAS AND ELECTRICAL DISCHARGES

Appl. Phys. Lett. 97, 171501 (2010); http://dx.doi.org/10.1063/1.3505339 (3 pages)

Geometric dependence of radio-frequency breakdown in normal conducting accelerating structures

Valery Dolgashev1, Sami Tantawi1, Yasuo Higashi2, and Bruno Spataro3

1SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
2High Energy Accelerator Research Organization, KEK, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
3INFN-LNF, 00044 Frascati, Italy

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(Received 30 July 2010; accepted 4 October 2010; published online 25 October 2010)

We present the experimental results of a systematic study of rf breakdown phenomenon in high vacuum accelerator structures. In this study, the surface processing, geometry, and materials of the structures have been varied, one parameter at a time. The breakdown rate or alternatively, the probability of breakdown/pulse/meter has been recorded for different operating parameters. These statistical data reveal a strong dependence of breakdown probability on surface magnetic field, or alternatively on surface pulsed heating. This is in contrast to the classical view of electric field dependence. We will present our experimental methodology and results showing this remarkable correlation.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

accelerator RF systems, electric fields, geometry, linear accelerators, surface finishing

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3505339

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    H. H. Braun, S. Döbert, I. Wilson, and W. Wuensch, Phys. Rev. Lett. 90, 224801 (2003).

    A. Grudiev, S. Calatroni, and W. Wuensch, Phys. Rev. ST Accel. Beams 12, 102001 (2009).

    D. P. Pritzkau and R. H. Siemann, Phys. Rev. ST Accel. Beams 5, 112002 (2002).


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