A preliminary study of the feasibility of using superconducting quarter-wave resonators foraccelerating high intensity proton beams

YANG Liu; LU Xiang-Yang; QUAN Sheng-Wen; YAO Zhong-Yuan; LUO Xing; ZHOU Kui

doi:10.1088/1674-1137/36/11/014

Chinese Physics C> 2012, Vol. 36> Issue(11) : 1116-1119 DOI: 10.1088/1674-1137/36/11/014

A preliminary study of the feasibility of using superconducting quarter-wave resonators foraccelerating high intensity proton beams

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Abstract：
The superconducting (SC) cavities currently used for the acceleration of protons at a low velocity range are based on half-wave resonators. Due to the rising demand on high current, the issue of beam loading and space-charge problems has arisen. Qualities of low cost and high accelerating efficiency are required for SC cavities, which are properly fitted by using SC quarter-wave resonators (QWR). We propose a concept of using QWRs with frequency 162.5 MHz to accelerate high current proton beams. The main factor limiting SC QWRs being applied to high current proton beams is vertical beam steering, which is dominantly caused by the magnetic field on axis. In this paper, we intend to analyze steering and eliminate it to verify the qualification of using QWRs to accelerate high intensity proton beams.

References

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Facco A et al. Low and Medium Beta sc Cavities. Proc. EPAC2004[2] Devanz G. Superconducting RF Technology for Proton and Ion Accelerators. Proc. IPAC2011[3] Mosnier A. The IFMIF 5 MW linacs. Proc. LINAC2008[4] Ristori L et al. Design, Fabrication and Testing of Single Spoke Resonators at Fermilab. Proc. SRF2009[5] Dziuba F et al. Development of Superconducting CH-cavities for the EUROTRANS Injector Linac. Proc. SRF2009[6] HE Y et al. The Conceptual Design of Injector II of ADS in China. Proc. IPAC2011[7] Facco A et al. Physical Review Special Topics-Accelerators and Beam, 2006, 9: 110101[8] Facco A. Physical Review Special Topics-Accelerators and Beam, 2011, 14: 070101[9] Ostroumov P N, Shepard K W. Physical Review Special Topics-Accelerators and Beam, 2001, 4: 110101

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YANG Liu, LU Xiang-Yang, QUAN Sheng-Wen, YAO Zhong-Yuan, LUO Xing and ZHOU Kui. A preliminary study of the feasibility of using superconducting quarter-wave resonators foraccelerating high intensity proton beams[J]. Chinese Physics C, 2012, 36(11): 1116-1119. doi: 10.1088/1674-1137/36/11/014

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Received: 2012-01-10
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

A preliminary study of the feasibility of using superconducting quarter-wave resonators foraccelerating high intensity proton beams

Corresponding author: LU Xiang-Yang,

Received Date: 2012-01-10
Accepted Date: 1900-01-01
Available Online: 2012-11-05

Abstract: The superconducting (SC) cavities currently used for the acceleration of protons at a low velocity range are based on half-wave resonators. Due to the rising demand on high current, the issue of beam loading and space-charge problems has arisen. Qualities of low cost and high accelerating efficiency are required for SC cavities, which are properly fitted by using SC quarter-wave resonators (QWR). We propose a concept of using QWRs with frequency 162.5 MHz to accelerate high current proton beams. The main factor limiting SC QWRs being applied to high current proton beams is vertical beam steering, which is dominantly caused by the magnetic field on axis. In this paper, we intend to analyze steering and eliminate it to verify the qualification of using QWRs to accelerate high intensity proton beams.