Effects of capacitance ratio on the image linearity of capacitive division image readout

Fanpu Lei; Yonglin Bai; Bingli Zhu; Bo Wang; Xiaohong Bai; Xun Hou

doi:10.1016/j.nima.2018.06.030

Effects of capacitance ratio on the image linearity of capacitive division image readout

Fanpu Lei
, Yonglin Bai
, Bingli Zhu
, Bo Wang
, Xiaohong Bai
, Xun Hou

CAS - Xi'an Institute of Optics and Precision Mechanics
University of Chinese Academy of Sciences

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Capacitive division readout anode has the advantages of simple manufacture technology and high spatial resolution. Linearity of the restored image is limited by the relationship between the values of C (charge divide capacitor), C_s (parasitic capacitor), C_d (capacitor introduced by diagonal electrode) and C_p (perimeter capacitor). This paper describes a discrete capacitance matrix to investigate the dependence of image linearity on capacitor ratios, including C/C_s, C/C _d and(N-1)C/C _p (N is the number of nodes in each row of the capacitance matrix). Results presents that image nonlinearity varies monotonically with C/C_s, C/C _d and(N-1)C/C_p. The effect of these capacitors on the linearity of image can be negligible when C/C_s is greater than 100, C/C_d is greater than 10 and (N-1)C/C_p is smaller than 0.1. The reliability of the simulation results is verified by experiments. The RMS nonlinearity of capacitive anode is expected to less than 0.71%.

Original language	English
Pages (from-to)	76-82
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	902
DOIs	https://doi.org/10.1016/j.nima.2018.06.030
State	Published - 11 Sep 2018
Externally published	Yes

Keywords

Capacitive anode
Charge division
Image linearity

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10.1016/j.nima.2018.06.030

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@article{6284a92f241e4d04b7889f19ef5cba00,

title = "Effects of capacitance ratio on the image linearity of capacitive division image readout",

abstract = "Capacitive division readout anode has the advantages of simple manufacture technology and high spatial resolution. Linearity of the restored image is limited by the relationship between the values of C (charge divide capacitor), Cs (parasitic capacitor), Cd (capacitor introduced by diagonal electrode) and Cp (perimeter capacitor). This paper describes a discrete capacitance matrix to investigate the dependence of image linearity on capacitor ratios, including C/Cs, C/C d and(N-1)C/C p (N is the number of nodes in each row of the capacitance matrix). Results presents that image nonlinearity varies monotonically with C/Cs, C/C d and(N-1)C/Cp. The effect of these capacitors on the linearity of image can be negligible when C/Cs is greater than 100, C/Cd is greater than 10 and (N-1)C/Cp is smaller than 0.1. The reliability of the simulation results is verified by experiments. The RMS nonlinearity of capacitive anode is expected to less than 0.71\%.",

keywords = "Capacitive anode, Charge division, Image linearity",

author = "Fanpu Lei and Yonglin Bai and Bingli Zhu and Bo Wang and Xiaohong Bai and Xun Hou",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = sep,

day = "11",

doi = "10.1016/j.nima.2018.06.030",

language = "英语",

volume = "902",

pages = "76--82",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

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TY - JOUR

T1 - Effects of capacitance ratio on the image linearity of capacitive division image readout

AU - Lei, Fanpu

AU - Bai, Yonglin

AU - Zhu, Bingli

AU - Wang, Bo

AU - Bai, Xiaohong

AU - Hou, Xun

PY - 2018/9/11

Y1 - 2018/9/11

N2 - Capacitive division readout anode has the advantages of simple manufacture technology and high spatial resolution. Linearity of the restored image is limited by the relationship between the values of C (charge divide capacitor), Cs (parasitic capacitor), Cd (capacitor introduced by diagonal electrode) and Cp (perimeter capacitor). This paper describes a discrete capacitance matrix to investigate the dependence of image linearity on capacitor ratios, including C/Cs, C/C d and(N-1)C/C p (N is the number of nodes in each row of the capacitance matrix). Results presents that image nonlinearity varies monotonically with C/Cs, C/C d and(N-1)C/Cp. The effect of these capacitors on the linearity of image can be negligible when C/Cs is greater than 100, C/Cd is greater than 10 and (N-1)C/Cp is smaller than 0.1. The reliability of the simulation results is verified by experiments. The RMS nonlinearity of capacitive anode is expected to less than 0.71%.

AB - Capacitive division readout anode has the advantages of simple manufacture technology and high spatial resolution. Linearity of the restored image is limited by the relationship between the values of C (charge divide capacitor), Cs (parasitic capacitor), Cd (capacitor introduced by diagonal electrode) and Cp (perimeter capacitor). This paper describes a discrete capacitance matrix to investigate the dependence of image linearity on capacitor ratios, including C/Cs, C/C d and(N-1)C/C p (N is the number of nodes in each row of the capacitance matrix). Results presents that image nonlinearity varies monotonically with C/Cs, C/C d and(N-1)C/Cp. The effect of these capacitors on the linearity of image can be negligible when C/Cs is greater than 100, C/Cd is greater than 10 and (N-1)C/Cp is smaller than 0.1. The reliability of the simulation results is verified by experiments. The RMS nonlinearity of capacitive anode is expected to less than 0.71%.

KW - Capacitive anode

KW - Charge division

KW - Image linearity

UR - https://www.scopus.com/pages/publications/85048762780

U2 - 10.1016/j.nima.2018.06.030

DO - 10.1016/j.nima.2018.06.030

M3 - 文章

AN - SCOPUS:85048762780

SN - 0168-9002

VL - 902

SP - 76

EP - 82

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Effects of capacitance ratio on the image linearity of capacitive division image readout

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Keywords

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