Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity

PAN Wei-Min<SUP></SUP>; WANG Guang-Wei<SUP></SUP>

doi:10.1088/1674-1137/32/1/016

Chinese Physics C> 2008, Vol. 32> Issue(1) : 72-74 DOI: 10.1088/1674-1137/32/1/016

Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity

PAN Wei-Min ,
WANG Guang-Wei ^, ,

Abstract
HTML
Reference
Related

PDF

Abstract：
It is very important to predict the coupling between the cavity and the high power input source in the coupler design. In this paper, the time domain method is used to calculate the external quality factor for the BEPCII superconducting cavity. A comparison between the simulation results and the experimental results is presented for the different antenna penetration depths of the coupler. The results of simulation and measurement of have a good agreement, and the error is about 10%. The geometry parameters related with are also studied.

References

[1]

. Hasan Padamsee, Jens Knobloch, Tom Hays. RF Superconductivity for Accelerators. New York: John Wiley Sons,INC, 1998. 147-3892. LI De-Run et al. Calculations of External Coupling to a Single Cell RF Cavity. Proceedings of LINAC1998. 9773. SHI Jia-Ru, CHEN Huai-Bi, ZHENG Shu-Xin et al. Comparison of Measured and Calculate Coupling between a Waveguide and an RF Cavity Using CST Microwave Studio. Proceedings of EPAC 2006. 1328-1330

[1]	XU Wen-Can , QUAN Sheng-Wen , HAO Jian-Kui , JIANG Tao , ZHANG Bao-Cheng , ZHAO Kui . Measurement and Adjustment of Dumb-Bells for 9-cell TESLA Cavity. Chinese Physics C, 2008, 32(S1): 154-156.
[2]	HAO Jian-Kui , ZHAO Kui , ZHANG Bao-Cheng , QUAN Sheng-Wen , WANG Li-Fang , CHEN Jia-Er . Researches on Large Grain SC Cavities at Peking University. Chinese Physics C, 2008, 32(S1): 181-183.
[3]	YANG Shi , YANG Han-Wu , QIAN Bao-Liang , ZHONG Hui-Huang . Preliminary Study of the All-Solid, High-Power, Long-Pulse Pulse Generator Based on Magnetic Switch. Chinese Physics C, 2008, 32(S1): 292-294.
[4]	ZHANG Jing-Ru , ZHAO Feng-Li , PEI Shi-Lun . Optimization Design and Application of S-Band 3dB Directional Coupler. Chinese Physics C, 2008, 32(S1): 172-174.
[5]	CHEN Hong-Bin , HU Lin-Lin , LIU Tian-Wen , MENG Fan-Bao , ZHOU Chuan-Ming , LI Ai-Ping , ZHANG Yun-Jian , LU Wei , YANG Zhou-Bing . Particle Simulation and Experimental Study of the High-Power Narrow-Pulse Millimeter Wave BWO. Chinese Physics C, 2007, 31(2): 219-222.
[6]	WANG Gui-Mei , LIU Chu-Yu , LU Xiang-Yang , ZHUANG Jie-Jia , ZHAO Kui , CHEN Jia-Er . Initial Design of High Power Coherent Terahertz(THz) Source. Chinese Physics C, 2007, 31(9): 823-825.
[7]	CHEN Yan-Wei , WANG Shu-Hong , PEI Guo-Xi , LIU Wei-Bin , YE Qiang . Beam Commissioning of BEPCII Injector Linac. Chinese Physics C, 2006, 30(6): 562-565.
[8]	WANG Rong , PEI Yuan-Ji , JIN Kai . A Calculation Method for RF Couplers Design Based on Numerical Simulation by Microwave Studio. Chinese Physics C, 2006, 30(6): 566-570.
[9]	WANG Gui-Mei , WU Wen-Zong , Xiangyang LU , ZHANG Bao-Cheng , QUAN Sheng-Wen , ZHU Feng , LIN LIN , JIAO Fei , ZHAO Kui . Study on HOMs in 1+1/2 Cell Superconducting Cavity. Chinese Physics C, 2005, 29(11): 1077-1080.
[10]	SUN Hong , ZHAO Sheng-Chu , GE Ming-Qi . Magnetic Shield for the Vertical Test System of Superconducting Cavity. Chinese Physics C, 2005, 29(10): 989-992.
[11]	HAO Jian-Kui , ZHAO Kui , ZHU Feng . Researches on Bake Effect on RF Superconducting Cavities. Chinese Physics C, 2005, 29(9): 918-922.
[12]	GU Peng-Da , GEN Zhe-Qiao , CUI Yan-Yan , PEI Guo-Xi , WANG Shu-Hong . Design Studies of RF Phasing System for BEPCII Linac. Chinese Physics C, 2005, 29(3): 316-320.
[13]	HOU Mi , ZHOU Zu-Sheng . RF Power Test and Conditioning of the New Accelerating Structures for the BEPCII-Linac. Chinese Physics C, 2005, 29(1): 81-85.
[14]	LI Zhong-Quan , ZHANG Chuang . Study of Heavily Damped SC RF Cavity. Chinese Physics C, 2003, 27(10): 919-925.
[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]	NI Yi , TONG De-Chun , LIN Yu-Zheng . Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain by Genetic Algorithms. Chinese Physics C, 2001, 25(7): 689-695.
[17]	HU Yan-Le , ZHAO Kui , CHEN Jia-Er , ZHANG Bao-Cheng , HAO Jian-Kui , WANG Li-Fang . Design of a New DC-RF Injector Used in High Average Power FEL. Chinese Physics C, 2001, 25(8): 787-792.
[18]	Ni Yi , Xiao Liling , Tong Dechun , Tian Bo , Jin Qingxiu , Huang Yuanzhong . Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain Without Introducing Objects Into the Cavity. Chinese Physics C, 1998, 22(6): 570-575.
[19]	Zu Donglin . Concept Design of a New Structure of 1.3GHz Single-Cell Superconducting Cavity. Chinese Physics C, 1996, 20(11): 1041-1052.
[20]	LIANG Zhong-Xin , LI Wei-Guo , LIN Kui-Xun , HAN Chong-Zhao , QIAN Wei-Shu , CHENG Jia-Er . HIGH POWER TESTS ON A HELIX RESONATOR WITHOUT BEAM. Chinese Physics C, 1983, 7(4): 515-518.

Access

Get Citation

PAN Wei-Min, WANG Guang-Wei and Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity[J]. Chinese Physics C, 2008, 32(1): 72-74. doi: 10.1088/1674-1137/32/1/016

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2007-02-06
Revised: 2007-03-30

Article Metric

Article Views(4535)
PDF Downloads(769)
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

Calculation of the External Quality Factor of the High Power Input Coupler for the BEPCII Superconducting Cavity

PAN Wei-Min
WANG Guang-Wei ^,

Corresponding author: WANG Guang-Wei,

Received Date: 2007-02-06
Accepted Date: 2007-03-30
Available Online: 2008-01-05

Abstract: It is very important to predict the coupling between the cavity and the high power input source in the coupler design. In this paper, the time domain method is used to calculate the external quality factor for the BEPCII superconducting cavity. A comparison between the simulation results and the experimental results is presented for the different antenna penetration depths of the coupler. The results of simulation and measurement of have a good agreement, and the error is about 10%. The geometry parameters related with are also studied.