Design and simulation of a wire position monitor for cryogenicsystems in an ADS linac

ZHU Hong-Yan; DONG Lan; LI Bo

doi:10.1088/1674-1137/38/8/087001

Chinese Physics C> 2014, Vol. 38> Issue(8) : 087001 DOI: 10.1088/1674-1137/38/8/087001

Design and simulation of a wire position monitor for cryogenicsystems in an ADS linac

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Abstract：
This paper introduces the design and simulation of a Wire Position Monitor (WPM) used in the cryogenic system of an Accelerator Driven System (ADS). The WPM is designed to monitor the contraction of cold masses during the cooling-down operation. In this paper, POISSON-2D electrostatic field software is used to calculate the best characteristic impedance for the WPM. Furthermore, the time domain signal of different end structures is theoretically analyzed and simulated. The coupling of electrodes and the influence of signal carrier size, which may influence the induced signal, are also discussed. Finally, the linearity of the induced voltage and the sensitivity of the WPM are analyzed. The time domain simulation results are consistent with the theoretical analysis. The influences of the coupling and carrier size are very small, and the linearity of the normalized voltage is good within r/2.

References

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ZHU Hong-Yan, DONG Lan and LI Bo. Design and simulation of a wire position monitor for cryogenicsystems in an ADS linac[J]. Chinese Physics C, 2014, 38(8): 087001. doi: 10.1088/1674-1137/38/8/087001

ZHU Hong-Yan, DONG Lan and LI Bo. Design and simulation of a wire position monitor for cryogenicsystems in an ADS linac[J]. Chinese Physics C, 2014, 38(8): 087001. doi: 10.1088/1674-1137/38/8/087001 shu

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Received: 2013-10-09
Revised: 2014-01-25

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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

Design and simulation of a wire position monitor for cryogenicsystems in an ADS linac

Corresponding author: ZHU Hong-Yan,

Received Date: 2013-10-09

Accepted Date: 2014-01-25

Available Online: 2014-08-05

Abstract: This paper introduces the design and simulation of a Wire Position Monitor (WPM) used in the cryogenic system of an Accelerator Driven System (ADS). The WPM is designed to monitor the contraction of cold masses during the cooling-down operation. In this paper, POISSON-2D electrostatic field software is used to calculate the best characteristic impedance for the WPM. Furthermore, the time domain signal of different end structures is theoretically analyzed and simulated. The coupling of electrodes and the influence of signal carrier size, which may influence the induced signal, are also discussed. Finally, the linearity of the induced voltage and the sensitivity of the WPM are analyzed. The time domain simulation results are consistent with the theoretical analysis. The influences of the coupling and carrier size are very small, and the linearity of the normalized voltage is good within r/2.

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Design and simulation of a wire position monitor for cryogenicsystems in an ADS linac

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通讯作者: 陈斌, bchen63@163.com

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