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Development and beam commissioning of a continuous-wave four-vane heavy ion radio-frequency quadrupole accelerator based on stable operation

文献类型：期刊论文

作者Ma, Wei1,2; Lu, Liang1; Sun, Lie-Peng1; Yang, Yao1; Sun, Liang-Ting1; Xu, Xian-Bo1; Shi, Long-Bo1; Xing, Chao-Chao1; Yang, Lei1; He, Tao1
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
出版日期2020
卷号949页码:12
ISSN号0168-9002
关键词CW RFQ Stable operation Conditioning Beam commissioning
DOI10.1016/j.nima.2019.162824
通讯作者Lu, Liang(luliang@impcas.ac.cn) ; Zhao, Hong-Wei(zhaohw@impcas.ac.cn)
英文摘要A continuous-wave (CW) heavy ion radio frequency quadrupole (RFQ) accelerator was developed for the Low Energy Accelerator Facility (LEAF) at IMP. The RFQ accelerator is the most effective accelerator for accelerating the low energy high intensity beam, but there are challenges achieving the stable CW operation. This paper presents the development of the LEAF RFQ based on the stable CW operation. In the beam dynamics design, a multi-harmonic buncher is utilized to reduce the longitudinal emittance and the constant-voltage design is applied for low RF power loss. In the radio frequency (RF) design, the constant-voltage four-vane RFQ is selected to reduce the power dissipation. The pi-mode stabilizing loop (PISL) is employed to reduce the admixture of the dipole field. In order to ensure the stability of the cavity structure, the multi-physics of the cavity are analysed. The resonant frequency sensitivities of the cooling water temperature are studied to tune the cavity frequency during operation. Through low power test and tuning, the resonance frequency and field distributions are optimized. The beam commissioning (He-4(1+), N-14(2+) and Kr-86(13+)) and some radiation experiments have been performed. The entire processes of the LEAF RFQ development, such as, beam dynamics design, RF design, multi-physics analysis, low power test, high power conditioning, beam commissioning and some radiation experiments, will be detailed presented in this paper. The results of testing and commissioning indicate that the development of the LEAF RFQ has succeeded. And the design scheme for RFQ with stable CW operation in this work can be applied to other future CW RFQs.
WOS关键词FREQUENCY ; DESIGN ; RFQ
资助项目National Nature Science Foundation of China[11427904] ; National Nature Science Foundation of China[11535016]
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种英语
出版者ELSEVIER
WOS记录号WOS:000495098100013
资助机构National Nature Science Foundation of China
源URL[http://119.78.100.186/handle/113462/141597]  
专题中国科学院近代物理研究所
通讯作者Lu, Liang; Zhao, Hong-Wei
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
2.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621999, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Wei,Lu, Liang,Sun, Lie-Peng,et al. Development and beam commissioning of a continuous-wave four-vane heavy ion radio-frequency quadrupole accelerator based on stable operation[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2020,949:12.
APA Ma, Wei.,Lu, Liang.,Sun, Lie-Peng.,Yang, Yao.,Sun, Liang-Ting.,...&Zhao, Hong-Wei.(2020).Development and beam commissioning of a continuous-wave four-vane heavy ion radio-frequency quadrupole accelerator based on stable operation.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,949,12.
MLA Ma, Wei,et al."Development and beam commissioning of a continuous-wave four-vane heavy ion radio-frequency quadrupole accelerator based on stable operation".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 949(2020):12.

入库方式： OAI收割

来源：近代物理研究所

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