RF measurements of a C-band cavity beam position monitor

CHU Jian-Hua; TONG De-Chun; ZHAO Zhen-Tang

doi:10.1088/1674-1137/32/5/012

Chinese Physics C> 2008, Vol. 32> Issue(5) : 385-388 DOI: 10.1088/1674-1137/32/5/012

RF measurements of a C-band cavity beam position monitor

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Abstract：
RF cold test of a novel C-band cavity beam position monitor (PBM) to be used in the SDUV-FEL Test Facility is described. The test results are presented and some characteristics discussed. The main parameters obtained are in reasonable agreement with the analytical estimations. Effective suppression of the common mode has been demonstrated. The position sensitivity over the test region of ±0.5 mm is about －21.58 dB/10 μm for the TM₁₁₀ mode and is linear in the central region of the BPM cavity.

References

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. ZHAO Z T et al. Nucl. Instrum. Methods A, 2004, 528:5912. Emma P. Nucl. Instrum. Methods A, 1999, 429: 4073. Slaton T. Development of Nanometer Resolution C-Band Radio Frequency Beam Position Monitors in the Final Focous Test Beam. In: Proc. of LINAC98. Chicago: 1998.911-9134. CHU Jian-Hua et al. HEP NP, 2006, 30(6): 344 (in Chinese)5. Shintake T. Development of Nanometer Resolution RFBPMs. In: Proc. of HEACC98. Dubna: 1998. 133-1356. Ronald Johnson et al. An X-Band Cavity for a High Precision Beam Position Monitor. In: Proc. of DIPAC2003.Mainz: 2003. 196-198

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CHU Jian-Hua, TONG De-Chun and ZHAO Zhen-Tang. RF measurements of a C-band cavity beam position monitor[J]. Chinese Physics C, 2008, 32(5): 385-388. doi: 10.1088/1674-1137/32/5/012

CHU Jian-Hua, TONG De-Chun and ZHAO Zhen-Tang. RF measurements of a C-band cavity beam position monitor[J]. Chinese Physics C, 2008, 32(5): 385-388. doi: 10.1088/1674-1137/32/5/012 shu

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Received: 2007-07-19
Revised: 2007-09-03

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沈阳化工大学材料科学与工程学院沈阳 110142

RF measurements of a C-band cavity beam position monitor

Corresponding author: ZHAO Zhen-Tang,

Received Date: 2007-07-19
Accepted Date: 2007-09-03
Available Online: 2008-05-05

Abstract:

RF cold test of a novel C-band cavity beam position monitor (PBM) to be used in the SDUV-FEL Test Facility is described. The test results are presented and some characteristics discussed. The main parameters obtained are in reasonable agreement with the analytical estimations. Effective suppression of the common mode has been demonstrated. The position sensitivity over the test region of ±0.5 mm is about －21.58 dB/10 μm for the TM₁₁₀ mode and is linear in the central region of the BPM cavity.