The Design of C-Band Cavity Type Beam Position Monitor

CHU Jian-Hua; ZHAO Zhen-Tang

Chinese Physics C> 2006, Vol. 30> Issue(4) : 344-348

The Design of C-Band Cavity Type Beam Position Monitor

CHU Jian-Hua ^, ,
ZHAO Zhen-Tang

Shanghai Institute of Applied Phsyics, the Chinese Academy of Sciences, Shanghai 201800, China

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Abstract：
This paper presents the structural and electromagnetic design of a C-band cavity type beam position monitor, with working frequency of 5.712GHz. We use MAFIA to simulate electromagnetic field, the results show that the waveguide coupling scheme can reject the common mode TM010 effectively. Some major parameters which may affect TM110 frequency are calculated. A homodyne cicuit has been designed, which converts microwave signal to low-frequency output.

References

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. Emma P. Nucl. Instrum. and Methods, 1999, A429: 407-4132. Marc C R. Future Developments in Electron Linac Diagnostics.In: Proc. of LINAC2004. Lübeck: 2004. 280-843. Slaton T. Development of Nanometer Resolution C-Band Radio Frequency Beam Position Monitors in the Final Focous Test Beam. In: Proc. of LINAC98. Chicago: 1998.911-134. Waldmann H. Cavity-Type BPMs for the Tesla Test Facility Free Electron Laser. In: Proc. of DIPAC2003. Mainz:2003. 193-955. Shintake. Development of Nanometer Resolution RFBPMs.In: Proc. of HEACC98.Dubna: 1998. 133-356. Ronald Johnson. An X-Band Cavity for a High Precision Beam Position Monitor. In: Proc. of DIPAC2003. Mainz:2003. 196-987. Lorenz R. Cavity Beam Position Monitors. In: Proc. of PAC2003. Ptland: 2004; In: Proc. of AIP98. Poland: 1998.26-88. YUAN Ren-Xian et al. HEP NP, 2004, 28(6): 664-68(in Chinese)(衰任贤等.高能物理与核物理,2004, 28(6): 664-668)9. Ross M C et al. Very High Resolution RF Cavity BPM. In:Proc. of PAC2003. Ptland: 2004. 2545-54710. Sabah S. Design and Calibration of IQ-Mixers, EPAC 1998.830-32

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CHU Jian-Hua and ZHAO Zhen-Tang. The Design of C-Band Cavity Type Beam Position Monitor[J]. Chinese Physics C, 2006, 30(4): 344-348.

CHU Jian-Hua and ZHAO Zhen-Tang. The Design of C-Band Cavity Type Beam Position Monitor[J]. Chinese Physics C, 2006, 30(4): 344-348. shu

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Received: 2005-07-26
Revised: 2005-08-31

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The Design of C-Band Cavity Type Beam Position Monitor

CHU Jian-Hua ^,
ZHAO Zhen-Tang

Corresponding author: CHU Jian-Hua,

Shanghai Institute of Applied Phsyics, the Chinese Academy of Sciences, Shanghai 201800, China

Received Date: 2005-07-26
Accepted Date: 2005-08-31
Available Online: 2006-04-05

Abstract: This paper presents the structural and electromagnetic design of a C-band cavity type beam position monitor, with working frequency of 5.712GHz. We use MAFIA to simulate electromagnetic field, the results show that the waveguide coupling scheme can reject the common mode TM010 effectively. Some major parameters which may affect TM110 frequency are calculated. A homodyne cicuit has been designed, which converts microwave signal to low-frequency output.