Stochastic Cooling Pickup/Kicker Developments for the High-Precision Spectrometer Ring in the HIAF Project at IMP

被引：2

作者：

Zhu, Guangyu ^{[1
,2
]}

Wu, Junxia ^{[1
,2
]}

Caspers, Fritz

Du, Ze ^{[1
,2
]}

Wei, Yuan ^{[1
,2
]}

Yang, Jiancheng ^{[1
,2
]}

Hu, Xuejing ^{[1
]}

Zhang, Yong ^{[1
]}

Xie, Hongming ^{[1
]}

Jing, Long ^{[1
]}

Li, Zhixue ^{[1
]}

Zhang, Xin ^{[1
]}

Meng, Jun ^{[1
]}

Xia, Jiawen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Dept Accelerator Technol Ctr, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2021年 / 68卷 / 01期

关键词：

Cooling; Impedance; Particle beams; Bandwidth; Structural beams; Electrodes; Notch filters; Ceramic chamber; pickup; kicker; shunt impedance; spectrometer ring (SRing); stochastic cooling;

D O I：

10.1109/TNS.2020.3038525

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Stochastic cooling of the spectrometer ring (SRing) at the High Intensity Heavy-Ion Accelerator Facility (HIAF) project in China, which is used mainly for experiments with radioactive fragment beams, is applied to speed up the cooling process of a stored ion beam. In this study, both a Faltin traveling wave structure and a novel slot-ring standing wave structure based on a ceramic vacuum chamber are discussed and evaluated for the pickup/kicker of the SRing stochastic cooling system. The slot-ring structure should significantly improve the shunt impedance due to the Cherenkov effect. For the Faltin-type structure, the results for the pickup shunt impedance obtained from simulations and from beam measurements agree well. Good agreement is also found between the simulated and measured results for the pickup shunt impedance of the slot-ring structure. Cooling process simulations using the Fokker-Planck equation based on the shunt impedance results for the Faltin- and slot-ring-type pickups are also presented.

引用

页码：9 / 20

页数：12

共 3 条

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