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

ZHANG Cong; ZHAO Hong-Wei; HE Yuan; XU Zhe; ZHANG Zhou-Li; SUN Lie-Peng; MEI Li-Rong; CONG Yan

doi:10.1088/1674-1137/34/11/018

Chinese Physics C> 2010, Vol. 34> Issue(11) : 1757-1761 DOI: 10.1088/1674-1137/34/11/018

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

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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.

References

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Kakutani N,Nakayama K,Tanabe Yet al.Study on Superconducting Quarter Wave Resonator for CW Intense Ion Linac.Proceedings of the 6th European Particle Accelerator Conference.Stockholm:Stockholm City Congress Centre,1998.1858-1860[2] Ceperly P H,Sokolowski J S,Ben-Zvi I et al.Nuclear Instruments and Methods,1976,136:421-423[3] Shepard K W,Roy A,Potukuchi P N.Niobium Coaxial Quarter-wave Cavities for the New Delhi Booster Linac.1993 Particle Accelerator Conference.Washington,D.C.,USA:Continuous Electron Beam Accelerator Facility,1993.1045-1047[4] Mosnier A.SPIRAL 2:A High Intensity Deuteron and Ion Linear Accelerator for Exotic Beam Production.2003 Particle Accelerator Conference.Portland,Oregon,USA:Stanford Linear Accelerator Center,Lawrence Berkeley National Laboratory,2003.595-597[5] Devanz G.Physica C,2006,441:173

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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

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Received: 2009-12-25
Revised: 2010-05-31

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: ZHANG Cong,

Received Date: 2009-12-25

Accepted Date: 2010-05-31

Available Online: 2010-11-05

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

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