Beam dynamics and commissioning of CW RFQ for a compact deuteron-beryllium neutron source

doi:10.1016/j.nima.2018.06.044

	Beam dynamics and commissioning of CW RFQ for a compact deuteron-beryllium neutron source
	Dou, Wei-Ping 1,2; Chen, Wei-Long 1,2; Wang, Feng-Feng1 ; Wang, Zhi-Jun 1; Li, Chen-Xing 1; Wu, Qi1 ; Wang, Chao 1; Wang, Wang-sheng1 ; Jia, Huan1 ; Zhang, Peng 1
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
	2018-09-21
卷号	903 页码:85-90
关键词	CW RFQ Internal buncher Beam commissioning
ISSN号	0168-9002
DOI	10.1016/j.nima.2018.06.044
英文摘要	The Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS) is building a compact neutron source using a superconducting linac. The injector RFQ will operate in continuous wave (CW) mode, accelerating a 10-mA deuteron beam from 20 keV/u to 1.5 MeV/u. To minimize the possibility of beam loss in the downstream superconducting linac and maintain high acceleration efficiency, we take the 99.9% longitudinal beam emittance as the key optimization parameter for the beam dynamics design of the RFQ, and include an internal buncher to reduce the longitudinal beam emittance. This paper describes the design procedures, beam dynamics simulations and preliminary beam commissioning results for this RFQ. Simulation results show that 99.9% longitudinal beam emittance at the RFQ exit is optimized to 3.5 pi mm mrad, which is 0.13 times the longitudinal acceptance of the downstream superconducting linac. Beam commissioning results demonstrate that the RFQ can accelerate 7.8 mA H-2(+) to 3.11 MeV. The transmission efficiency from a Faraday cup before the RFQ to the beam dump after the RFQ is 97.6%. The measured transmission efficiency agrees well with simulation results at different values for the inter-vane voltage.
资助项目	National Natural Science Foundation of China[Y736070GJ0]
WOS关键词	CONCEPTUAL DESIGN
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444422200011
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/59688]
专题	中国科学院近代物理研究所
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 73000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Dou, Wei-Ping,Chen, Wei-Long,Wang, Feng-Feng,et al. Beam dynamics and commissioning of CW RFQ for a compact deuteron-beryllium neutron source[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2018,903:85-90.
APA	Dou, Wei-Ping.,Chen, Wei-Long.,Wang, Feng-Feng.,Wang, Zhi-Jun.,Li, Chen-Xing.,...&He, Yuan.(2018).Beam dynamics and commissioning of CW RFQ for a compact deuteron-beryllium neutron source.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,903,85-90.
MLA	Dou, Wei-Ping,et al."Beam dynamics and commissioning of CW RFQ for a compact deuteron-beryllium neutron source".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 903(2018):85-90.