Preliminary study of a niobium quarter-wave prototype cavity for a heavy-ion superconducting linac

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ZHANG Cong, ZHAO Hong-Wei, HE Yuan, XU Zhe, ZHANG Zhou-Li, SUN Lie-Peng, MEI Li-Rong and CONG Yan. Preliminary study of a niobium quarter-wave prototype cavity for a heavy-ion superconducting linac[J]. Chinese Physics C, 2010, 34(11): 1757-1761. doi: 10.1088/1674-1137/34/11/018
ZHANG Cong, ZHAO Hong-Wei, HE Yuan, XU Zhe, ZHANG Zhou-Li, SUN Lie-Peng, MEI Li-Rong and CONG Yan. Preliminary study of a niobium quarter-wave prototype cavity for a heavy-ion superconducting linac[J]. Chinese Physics C, 2010, 34(11): 1757-1761.  doi: 10.1088/1674-1137/34/11/018 shu
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Received: 2009-12-25
Revised: 2010-05-31
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Preliminary study of a niobium quarter-wave prototype cavity for a heavy-ion superconducting linac

    Corresponding author: ZHANG Cong,

Abstract: 

Superconducting quarter-wave resonators, due to their compactness and their convenient shape for tuning and coupling, are very attractive for low-β beam acceleration. In this paper, two types of cavities with different geometry have been numerically simulated:the first type with larger capacitive load in the beam line and the second type of lollipop-shape for 100 MHz, β=0.06 beams;then the relative electromagnetic parameters and geometric sizes have been compared. It is found that the second type, whose structural design is optimized with the conical stem and shaping drift-tube, can support the better accelerating performance. At the end of the paper, some structural deformation effects on frequency shifts and appropriate solutions have been discussed.

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