Design study of the SSC-LINAC re-buncher

SUN Lie-Peng; ZHAO Hong-Wei; SUN Zhou-Ping; HE Yuan; SHI Ai-Min; XIAO Chen; DU Xiao-Nan; ZHANG Cong; ZHANG Zhou-Li

doi:10.1088/1674-1137/37/2/027002

Chinese Physics C> 2013, Vol. 37> Issue(2) : 027002 DOI: 10.1088/1674-1137/37/2/027002

Design study of the SSC-LINAC re-buncher

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Abstract：
A re-buncher with spiral arms for a heavy ion linear accelerator named as SSC-LINAC at HIRFL (the heavy ion research facility of Lanzhou) has been constructed. The re-buncher, which is used for beam longitudinal modulation and matching between the RFQ and DTL, is designed to be operated in continuous wave (CW) mode at the Medium-Energy Beam-Transport (MEBT) line to maintain the beam intensity and quality. Because of the longitudinal space limitation, the re-buncher has to be very compact and will be built with four gaps. We determined the key parameters of the re-buncher cavity from the simulations using Microwave Studio software, such as the resonant frequency, the quality factor Q and the shunt impedance. The detailed design of a 53.667 MHz spiral cavity and measurement results of its prototype will be presented.

References

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Mitra A K, Chan A. Design Considerations and Measurements of a 35 MHz Spiral re-buncher Cavity. TRIUMF Design Note, 1998[2] XIAO Chen, HE Yuan, YUAN You-Jin et al. Chinese Physics C (HEP NP), 2011, 35(5): 500-504[3] Hauser J, Klein H, Schempp A. Nuclear Instruments and Methods in Physics Research, 1976, 135(3): 409-414[4] Aoki T, Stinglin L, Kamigaito O et al. Nuclear Instruments and Methods in Physics Research, 2008, 592(3): 171-179[5] Welsch C P, Kunel K U, Schempp A. Development of Rebunching Cavities at IAP. Proceeding of LINAC2000. Monterey California, 2000[6] Aoki T, Stingelin L, Kamigaito O et al. Nuclear Instruments and Methods in Physics Research A, 2008, 592, 171-179[7] LI Zhi-Hui, TANG Jing-Yu. High Power Laser and Particle Beams, 2000, 12(1): 107-110 (in Chinese)[8] Peebles P Z, Parvarandeh M. Particle Accelerators, 2004, 6(3): 201-209[9] Schuh M, Kuhnel K U, Welsch C P. Optimization of Spiral-Load Cavities Using the 3D Code Opera/Soprano. Proceedings of LINAC. Victoria Canada, 2008[10] Mitra A K, Poirier R L. A 35 MHz Siral re-buncher Cavity for the TRIUMF ISAC Facility. Proceedings of 1999 Particle Conference. New York: United Stetes, 1999

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SUN Lie-Peng, ZHAO Hong-Wei, SUN Zhou-Ping, HE Yuan, SHI Ai-Min, XIAO Chen, DU Xiao-Nan, ZHANG Cong and ZHANG Zhou-Li. Design study of the SSC-LINAC re-buncher[J]. Chinese Physics C, 2013, 37(2): 027002. doi: 10.1088/1674-1137/37/2/027002

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Received: 2011-09-14
Revised: 2012-05-19

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沈阳化工大学材料科学与工程学院沈阳 110142

Design study of the SSC-LINAC re-buncher

Corresponding author: SUN Lie-Peng,

Received Date: 2011-09-14
Accepted Date: 2012-05-19
Available Online: 2013-02-05

Abstract: A re-buncher with spiral arms for a heavy ion linear accelerator named as SSC-LINAC at HIRFL (the heavy ion research facility of Lanzhou) has been constructed. The re-buncher, which is used for beam longitudinal modulation and matching between the RFQ and DTL, is designed to be operated in continuous wave (CW) mode at the Medium-Energy Beam-Transport (MEBT) line to maintain the beam intensity and quality. Because of the longitudinal space limitation, the re-buncher has to be very compact and will be built with four gaps. We determined the key parameters of the re-buncher cavity from the simulations using Microwave Studio software, such as the resonant frequency, the quality factor Q and the shunt impedance. The detailed design of a 53.667 MHz spiral cavity and measurement results of its prototype will be presented.