Simulation and experiments for the <EM>Q</EM><SUB>ext</SUB> of a cavity beam position monitor

LI Xiang; ZHENG Shu-Xin

doi:10.1088/1674-1137/34/3/020

Chinese Physics C> 2010, Vol. 34> Issue(3) : 405-408 DOI: 10.1088/1674-1137/34/3/020

Simulation and experiments for the Q_ext of a cavity beam position monitor

LI Xiang ^, ,
ZHENG Shu-Xin

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Abstract：
The external Q (Q_ext) of the dipole mode is a key parameter of the Cavity Beam Position Monitor (CBPM). It determines the amplitude and length of the dipole mode signal. In this paper, Q_ext of a CBPM whose waveguides were open to the air was simulated and measured, and the results agreed with each other. Then four waveguide-to-coaxial cable adpaters were adjusted and assembled to the CBPM, and Q_ext remained unchanged. This progress provides a reliable method to evaluate Q_ext in the physics design without simulating the structurally complex adapters.

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LI Xiang and ZHENG Shu-Xin. Simulation and experiments for the Q_ext of a cavity beam position monitor[J]. Chinese Physics C, 2010, 34(3): 405-408. doi: 10.1088/1674-1137/34/3/020

LI Xiang and ZHENG Shu-Xin. Simulation and experiments for the Q_ext of a cavity beam position monitor[J]. Chinese Physics C, 2010, 34(3): 405-408. doi: 10.1088/1674-1137/34/3/020 shu

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Received: 2009-04-30
Revised: 2009-06-22

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Simulation and experiments for the Q_ext of a cavity beam position monitor

Corresponding author: LI Xiang,

Received Date: 2009-04-30

Accepted Date: 2009-06-22

Available Online: 2010-03-05

Abstract:

The external Q (Q_ext) of the dipole mode is a key parameter of the Cavity Beam Position Monitor (CBPM). It determines the amplitude and length of the dipole mode signal. In this paper, Q_ext of a CBPM whose waveguides were open to the air was simulated and measured, and the results agreed with each other. Then four waveguide-to-coaxial cable adpaters were adjusted and assembled to the CBPM, and Q_ext remained unchanged. This progress provides a reliable method to evaluate Q_ext in the physics design without simulating the structurally complex adapters.

Simulation and experiments for the Q_ext of a cavity beam position monitor

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Simulation and experiments for the Q_ext of a cavity beam position monitor

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Simulation and experiments for the Qext of a cavity beam position monitor

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Simulation and experiments for the Q_ext of a cavity beam position monitor

Simulation and experiments for the Q_ext of a cavity beam position monitor