ZHOU De-Min; WANG Jiu-Qing; HUANG Gang; ZHOU Li-Juan

Chinese Physics C> 2005, Vol. 29> Issue(11) : 1081-1085

BEPCⅡ高频屏蔽波纹管纵向耦合阻抗测量和数值计算

Institute of High Energy Physics,CAS,Beijing 100049,China2 Department of Engineer Physics,Tsinghua University,Beijing 100084,China

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Abstract：
An impedance measurement system has been established to measure the longitudinal coupling impedance of vacuum components for the BEPC upgrade project(BEPCⅡ). The measurement system is based on the traditional coaxial wire methods. The measurements are done in frequency domain taking advantage of the HP/Agilent microwave vector network analyzer 8720ES. Two kinds of techniques, the TRL calibration and using a reference line, were investigated and applied to the practical measurements. This paper introduces this impedance measurement system and the results of the measurements. As a comparison, we also give the numerical simulations of the RF-shielded bellows for BEPCⅡ.

References

[1]

. BEPC ⅡDesign Report—Storage Rings: IHEP-BEPC Ⅱ-SB-03-3. 2003.11(in Chinese)(BEPC II初步设计储存环:IHEP-BEPC II-SB-03-3.2003.11)2. Sands M, Rees J. PEP-95, August, 19743. Hahn H. Phys. Rev. ST Accel. and Beams, 2000, 3: 1220014. WANG Cuang-Wei. Ph. D Dissertation, 1989(in Chinese)(王光伟.博士论文，1989)5. LENG Yong-Bin. Ph. D Dissertation, 1999(in Chinese)(冷用斌.博士论文，1999)6. HUANG Gang. Ph. D Dissertation, 2001(in Chinese)(黄刚.博士论文，2002)7. Engen G F, Hoer C A. IEEE Transaction on Microwave Theory and Techniques, 1979, MTT-27: 987—9938. Foley M et al. Proc. of the PAC 1993, 32949. Lambertson G R et al. Proc. of European Particle Accel.Conf. Nice, France, 1990. 104910. Hahn H. Phys. Rev. ST Accel. and Beams, 2004, 7: 01200111. ZHOU Li-Juan. Heating Test of the RF-Shield Bellows for BEPCⅡ. Vacuum, 2005, 42(2): 49(in Chinese)(周利娟.BEPC II储存环高频屏蔽波纹管发热实验.真空2005, 42(2): 49)12. The MAFIA Collaboration: MAFIA Manual Ver. 4.106(CST GmBH, Darmstadt, Germany, 2001)

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Received: 2005-03-14
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

BEPCⅡ高频屏蔽波纹管纵向耦合阻抗测量和数值计算

Corresponding author: ZHOU De-Min,

Institute of High Energy Physics,CAS,Beijing 100049,China2 Department of Engineer Physics,Tsinghua University,Beijing 100084,China

Received Date: 2005-03-14
Accepted Date: 1900-01-01
Available Online: 2005-11-05

Abstract: An impedance measurement system has been established to measure the longitudinal coupling impedance of vacuum components for the BEPC upgrade project(BEPCⅡ). The measurement system is based on the traditional coaxial wire methods. The measurements are done in frequency domain taking advantage of the HP/Agilent microwave vector network analyzer 8720ES. Two kinds of techniques, the TRL calibration and using a reference line, were investigated and applied to the practical measurements. This paper introduces this impedance measurement system and the results of the measurements. As a comparison, we also give the numerical simulations of the RF-shielded bellows for BEPCⅡ.