The energy upgrade of the SPARC photo-injector from 160 to more than 260 MeV will be done by replacing a low gradient 3m S-Band structure with two 1.4m high gradient C-band structures. The structures are travelling wave, constant impedance sections, have symmetric waveguide input couplers and have been optimized to work with a SLED RF input pulse. A prototype with a reduced number of cells has been fabricated and tested at high power in KEK (Japan) giving very good performances in terms of breakdown rates (≈ 10-6 bpp /m) at high accelerating gradient (>50 MV/m). The paper illustrates the design criteria of the structures, the fabrication procedure and the high power RF test results. Copyright © 2011 by IPAC'11/EPS-AG.
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|Titolo:||Design, fabrication and high power RF test of a C-band accelerating structure for feasibility study of the SPARC photo-injector energy upgrade|
|Data di pubblicazione:||2011|
|Appartiene alla tipologia:||04b Atto di convegno in volume|