Multiple harmonic frequencies resonant cavity design and half-scale prototype measurements for a fast kicker

doi:10.1103/PhysRevAccelBeams.19.122001

	Multiple harmonic frequencies resonant cavity design and half-scale prototype measurements for a fast kicker
	Huang, Yulu 1,2,3; Wang, Haipeng 2; Rimmer, Robert A.2; Wang, Shaoheng 2; Guo, Jiquan 2
刊名	PHYSICAL REVIEW ACCELERATORS AND BEAMS
	2016-12-29
卷号	19 页码:15
ISSN号	2469-9888
DOI	10.1103/PhysRevAccelBeams.19.122001
英文摘要	Quarter wavelength resonator (QWR) based deflecting cavities with the capability of supporting multiple odd-harmonic modes have been developed for an ultrafast periodic kicker system in the proposed Jefferson Lab Electron Ion Collider (JLEIC, formerly MEIC). Previous work on the kicking pulse synthesis and the transverse beam dynamics tracking simulations show that a flat-top kicking pulse can be generated with minimal emittance growth during injection and circulation of the cooling electron bunches. This flat-top kicking pulse can be obtained when a DC component and 10 harmonic modes with appropriate amplitude and phase are combined together. To support 10 such harmonic modes, four QWR cavities are used with 5, 3, 1, and 1 modes, respectively. In the multiple-mode cavities, several slightly tapered segments of the inner conductor are introduced to tune the higher order deflecting modes to be harmonic, and stub tuners are used to fine tune each frequency to compensate for potential errors. In this paper, we summarize the electromagnetic design of the five-mode cavity, including the geometry optimization to get high transverse shunt impedance, the frequency tuning and sensitivity analysis, and the single loop coupler design for coupling to all of the harmonic modes. In particular we report on the design and fabrication of a half-scale copper prototype of this proof-of-principle five-odd-mode cavity, as well as the rf bench measurements. Finally, we demonstrate mode superposition in this cavity experimentally, which illustrates the kicking pulse generation concept.
资助项目	Jefferson Science Associates, LLC[DEAC05-06OR23177]
WOS关键词	QUARTER-WAVE RESONATOR
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000400647500001
资助机构	Jefferson Science Associates, LLC
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45214]
专题	中国科学院近代物理研究所
通讯作者	Wang, Haipeng
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yulu,Wang, Haipeng,Rimmer, Robert A.,et al. Multiple harmonic frequencies resonant cavity design and half-scale prototype measurements for a fast kicker[J]. PHYSICAL REVIEW ACCELERATORS AND BEAMS,2016,19:15.
APA	Huang, Yulu,Wang, Haipeng,Rimmer, Robert A.,Wang, Shaoheng,&Guo, Jiquan.(2016).Multiple harmonic frequencies resonant cavity design and half-scale prototype measurements for a fast kicker.PHYSICAL REVIEW ACCELERATORS AND BEAMS,19,15.
MLA	Huang, Yulu,et al."Multiple harmonic frequencies resonant cavity design and half-scale prototype measurements for a fast kicker".PHYSICAL REVIEW ACCELERATORS AND BEAMS 19(2016):15.