Physics – Accelerator Physics
Scientific paper
2003-10-13
J.Vac.Sci.Technol.A Vac.Surf.Films 22 (2004) 1326
Physics
Accelerator Physics
21 pages, 8 figures, 4 tables, Submitted to JVST A as a proceeding of the 50th AVS conference (Baltimore, MD, 2-7 Nov 2003)
Scientific paper
10.1116/1.1701865
X-band accelerator structures meeting the Next Linear Collider (NLC) design requirements have been found to suffer vacuum surface damage caused by radio frequency (RF) breakdown, when processed to high electric-field gradients. Improved understanding of these breakdown events is desirable for the development of structure designs, fabrication procedures, and processing techniques that minimize structure damage. RF reflected wave analysis and acoustic sensor pickup have provided breakdowns localization in RF structures. Particle contaminations found following clean autopsy of four RF-processed travelling wave structures, have been catalogued and analyzed. Their influence on RF breakdown, as well as that of several other material-based properties, will be discussed.
Adamson Kristi
Garwin E. L.
Harvey S. E.
Kirby R. E.
Marcelja F.
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