Design and Performance of Photon Imaging Detector Based on Cross-Strip Anode with Charge Induction

Author:

Jiang Zhongzhi,Ni Qiliang

Abstract

Imaging detectors based on a microchannel plate (MCP) and charge division anode with charge induction have broad applications in particles (photons, neutrons, ions, and electrons) detection. However, the application of a charge induction readout mode is mostly focused on planar anodes, and there are few reports on double-layer cross-strip (XS) anodes with high spatial resolution and low gain requirements. In this paper, we design the parameters of the resistive layer and XS anode by theoretical derivation and the three-dimensional finite element method, including the sheet resistance, substrate thickness, strip width, and insulation thickness. The performance of the XS detector is characterized with the help of a resolution target and full field illumination using three different centroid algorithms. We conclude that the modified center of gravity (MCoG) has best imaging performance, which achieves a spatial resolution of 44.2 μm with a periodic distortion about 25.8%.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

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