Design and simulation of a beam position monitor for the high current proton linac

RUAN Yu-Fang; XU Tao-Guang; FU Shi-Nian

doi:10.1088/1674-1137/33/3/015

Chinese Physics C> 2009, Vol. 33> Issue(3) : 240-244 DOI: 10.1088/1674-1137/33/3/015

Design and simulation of a beam position monitor for the high current proton linac

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Abstract：
In this paper, the 2-D electrostatic field software, POISSON, is used to calculate the characteristic impedance of a BPM (beam position monitor) for a high current proton linac. Furthermore, the time-domain 3-D module of MAFIA with a beam microbunch at a varying offset from the axis is used to compute the induced voltage on the electrodes as a function of time. Finally, the effect of low β beams on the induced voltage, the sensitivity and the signal dynamic range of the BPM are discussed.

References

[1]

. Deibele C. Synthesis and Considerations for Optimally Matching to a Beam Position Monitor Circuit Impedance,SNS-NOTE-DIAG-312. MAFIA, Version 4.1063. Shafer R E. Beam Position Monitoring. AIP Conference Proceedings 212. New York: American Institute of Physics,1990. 26-584. Kurennoy S S. Electromagnetic Modeling of Beam Position and Phase Monitors for SNS Linac. Beam Instrumentation Workshop 2000. Cambridge5. Shafer R E. Beam Position Monitor Sensitivity for Low-β Beams. AIP Conference Proceedings 319. New York: Amer-ican Institute of Physics, 1994. 303-308

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RUAN Yu-Fang, XU Tao-Guang and FU Shi-Nian. Design and simulation of a beam position monitor for the high current proton linac[J]. Chinese Physics C, 2009, 33(3): 240-244. doi: 10.1088/1674-1137/33/3/015

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Received: 2008-07-07
Revised: 2008-07-29

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and simulation of a beam position monitor for the high current proton linac

Corresponding author: FU Shi-Nian,

Received Date: 2008-07-07
Accepted Date: 2008-07-29
Available Online: 2009-03-05

Abstract:

In this paper, the 2-D electrostatic field software, POISSON, is used to calculate the characteristic impedance of a BPM (beam position monitor) for a high current proton linac. Furthermore, the time-domain 3-D module of MAFIA with a beam microbunch at a varying offset from the axis is used to compute the induced voltage on the electrodes as a function of time. Finally, the effect of low β beams on the induced voltage, the sensitivity and the signal dynamic range of the BPM are discussed.