Design, fabrication, and high-gradient testing of an X -band, traveling-wave accelerating structure milled from copper halves
A prototype 11.994 GHz, traveling-wave accelerating structure for the Compact Linear Collider has been built, using the novel technique of assembling the structure from milled halves. The use of milled halves has many advantages when compared to a structure made from individual disks. These include...
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Published in | Physical review. Accelerators and beams Vol. 21; no. 6; p. 061001 |
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Main Authors | , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
College Park
American Physical Society
07.06.2018
American Physical Society (APS) |
Subjects | |
Online Access | Get full text |
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Summary: | A prototype 11.994 GHz, traveling-wave accelerating structure for the Compact Linear Collider has been built, using the novel technique of assembling the structure from milled halves. The use of milled halves has many advantages when compared to a structure made from individual disks. These include the potential for a reduction in cost, because there are fewer parts, as well as a greater freedom in choice of joining technology because there are no rf currents across the halves’ joint. Here we present the rf design and fabrication of the prototype structure, followed by the results of the high-power test and post-test surface analysis. During high-power testing the structure reached an unloaded gradient of100MV/mat a rf breakdown rate of less than1.5×10−5breakdowns/pulse/mwith a 200 ns pulse. This structure has been designed for the CLIC testing program but construction from halves can be advantageous in a wide variety of applications. |
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Bibliography: | USDOE AC02-76SF00515 |
ISSN: | 2469-9888 2469-9888 |
DOI: | 10.1103/PhysRevAccelBeams.21.061001 |