Study on the Performance of the Input Coupler for the BEPCⅡ Superconducting RF Cavity

ZHONG Juan; PAN Wei-Min

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2006, Vol. 30> Issue(10) : 1014-1017

Study on the Performance of the Input Coupler for the BEPCⅡ Superconducting RF Cavity

ZHONG Juan ^, ,
PAN Wei-Min

Institute of High Energy Physics, CAS, Beijing 100049, China

Abstract
HTML
Reference
Related

PDF

Abstract：
The input coupler for the accelerator cavity is one of the most critical parts in the RF accelerating system, its performance directly influences the RF power coupling to cavity, therefore, directly influences the cavity's quality. In the RF system of the BEPCⅡ, an antenna coaxial input coupler based on the design of KEKB superconducting (SC) cavity's coupler will be used. It's first to use this kind of high power coupler under the frequency of 500MHz in China. Some studies on this RF coupler have been done, which includes the multi-pacting (MP) effect, the transmission performance and the thermal layout simulation. The results show that (1) there are several serious MP points exist in this kind of coupler and some necessary ways must be taken to protect the coupler from destroying; (2) the transmission performance under BEPCⅡ operation frequency can be improved by optimizing the configuration of the coupler; (3) the heat-distributing pattern of the coupler from the simulation provides the important information for the cooling system design.

[1]	JI Bin , ZHAO Zhen-Lu , ZHANG Tian-Jue , XING Jian-Sheng , WANG Xiu-Long , YIN Zhi-Guo , HOU Shi-Gang , XIA Le . Theoretical and Practical Study on RF Model Cavity of 100MeV H^－ Cyclotron. Chinese Physics C, 2008, 32(S1): 160-162.
[2]	BI Yuan-Jie , ZHANG Tian-Jue , JI Bin , YAO Hong-Juan , AN Shi-Zhong , XING Jian-Sheng , TANG Chuan-Xiang . Research on RF Cavity Tolerance of CYCIAE-100. Chinese Physics C, 2008, 32(S1): 163-165.
[3]	SUN Yi , WANG Guang-Wei , PAN Wei-Min , LI Zhong-Quan , HUANG Hong , MA Qiang , LIN Hai-Ying , XU Bo , WANG Qun-Yao , LI Shao-Peng , HE Kun , LIU Ya-Ping . First Superconducting RF System Commissioning for BEPCⅡ in China. Chinese Physics C, 2008, 32(S1): 191-193.
[4]	BIAN Lin , LI Shao-Peng , LIU Ya-Ping . Measurements of Static Heat Loss and Unloaded Q₀ on the BEPCⅡ SRF Cavities. Chinese Physics C, 2008, 32(S1): 166-168.
[5]	WANG Guang-Wei , SHA Peng , PAN Wei-Min , SUN Yi , LI Zhong-Quan , LIU Rong , HUANG Tong-Ming , ZENG Ri-Hua , ZHAO Guang-Yuan , HUANG Hong , XU Yu-Fen , MA Qiang , LIN Hai-Ying , XU Bo , WANG Qun-Yao . Construction of the BEPCⅡ RF System. Chinese Physics C, 2008, 32(S1): 169-171.
[6]	PAN Wei-Min , WANG Guang-Wei , . Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity. Chinese Physics C, 2008, 32(1): 72-74. doi: 10.1088/1674-1137/32/1/016
[7]	ZHAO Feng-Li , HOU Mi , ZHAO Yan-Ping , LIU Jin-Tong , ZHANG Jing-Ru , ZHOU Yao-Xiang , HAN Da-Wei . Microwave System for BEPCⅡ-Linac. Chinese Physics C, 2006, 30(2): 155-158.
[8]	PAN Wei-Min , ZHAO Guang-Yuan , WANG Hao , WANG Guang-Wei . Technical requirements and design of BEPCⅡ RF power source. Chinese Physics C, 2006, 30(3): 246-250.
[9]	HAO Jian-Kui , ZHAO Kui , ZHU Feng . Researches on Bake Effect on RF Superconducting Cavities. Chinese Physics C, 2005, 29(9): 918-922.
[10]	ZHU Kun , GUO Zhi-Yu , FANG Jia-Xun , GAO Shu-Li , SONG Xiang-Xiang . The Simulation and Experiment Study of a 4 Rod RFQ RF Property. Chinese Physics C, 2005, 29(5): 512-516.
[11]	YU Cheng-Hui , WU Ying-Zhi , XU Gang . Coupling Compensation Scheme in BEPCⅡ. Chinese Physics C, 2005, 29(4): 418-423.
[12]	YUAN Ren-Xian , YUE Jun-Hui , CAO Jian-She , MA Li . Simulation of BEPCⅡ′s BPM. Chinese Physics C, 2004, 28(6): 664-668.
[13]	PEI Shi-Lun , WANG Shu-Hong , GU Peng-Da , LIU Bo . Optimization Studies on BEPCⅡ Future Pre-injector with Two SHBs. Chinese Physics C, 2004, 28(5): 549-554.
[14]	PAN Wei-Min , SUN Yi , WANG Guang-Wei , Takaaki Furuya , ichi Kurokawa . Studies on Higher Order Modes in BEPCⅡ Superconducting Cavity. Chinese Physics C, 2004, 28(3): 317-320.
[15]	LIN Zhi-Gang , ZHOU Lin , CHEN Huai-Bi , ZHAO Zhen-Tang . Suppression of HOM's on a Prototype Superconducting Cavity by Absorbers. Chinese Physics C, 2003, 27(8): 735-738.
[16]	LI Zhong-Quan , ZHANG Chuang . Study of Heavily Damped SC RF Cavity. Chinese Physics C, 2003, 27(10): 919-925.
[17]	LIU Xi-Ming , ZHANG Xue-Yao , WANG Hai-Long , WANG Yu-Shui . Fragmentation Character of Resonance Events in BEPC e⁺e^－ Annihilation. Chinese Physics C, 2002, 26(6): 557-562.
[18]	DAI Jian-Ping , CHAI Xue-Dong , ZHAO Zhen-Tang . Shunt Impedance and Power of the BEPC DC Separator. Chinese Physics C, 2001, 25(7): 680-683.
[19]	Zhang Mutian , Xu Taoguang , Zhou Linong , Guo Weiming . Design of Identical Cavity Coupled-Cavity Drift Tube Linac (CCDTL) Tanks. Chinese Physics C, 1999, 23(12): 1223-1230.
[20]	FANG Shou-Xian , CHEN Li-Min , CHEN Sen-Yu , CHEN Si-Yu , LIANG Xiu-Ru , ZHANG Chuang . IMPROVMENTS TO THE BEPC STORAGE RING LATTICE. Chinese Physics C, 1986, 10(2): 207-214.

Access

Get Citation

ZHONG Juan and PAN Wei-Min. Study on the Performance of the Input Coupler for the BEPCⅡ Superconducting RF Cavity[J]. Chinese Physics C, 2006, 30(10): 1014-1017.

ZHONG Juan and PAN Wei-Min. Study on the Performance of the Input Coupler for the BEPCⅡ Superconducting RF Cavity[J]. Chinese Physics C, 2006, 30(10): 1014-1017. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-01-09
Revised: 2006-02-17

Article Metric

Article Views(3925)
PDF Downloads(721)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Study on the Performance of the Input Coupler for the BEPCⅡ Superconducting RF Cavity

ZHONG Juan ^,
PAN Wei-Min

Corresponding author: ZHONG Juan,

Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2006-01-09
Accepted Date: 2006-02-17
Available Online: 2006-10-05

Abstract: The input coupler for the accelerator cavity is one of the most critical parts in the RF accelerating system, its performance directly influences the RF power coupling to cavity, therefore, directly influences the cavity's quality. In the RF system of the BEPCⅡ, an antenna coaxial input coupler based on the design of KEKB superconducting (SC) cavity's coupler will be used. It's first to use this kind of high power coupler under the frequency of 500MHz in China. Some studies on this RF coupler have been done, which includes the multi-pacting (MP) effect, the transmission performance and the thermal layout simulation. The results show that (1) there are several serious MP points exist in this kind of coupler and some necessary ways must be taken to protect the coupler from destroying; (2) the transmission performance under BEPCⅡ operation frequency can be improved by optimizing the configuration of the coupler; (3) the heat-distributing pattern of the coupler from the simulation provides the important information for the cooling system design.