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Proceedings Paper

Temporal resolution of x-ray detector for pulsar navigation
Author(s): Li-zhi Sheng; Bao-sheng Zhao; Hui-jun Hu; Peng Wang; Qiu-rong Yan; Bao-mei Chen; Yong-an Liu; Xiao-ping OuYang; Ding Chen
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Paper Abstract

Pulsar navigation is a promising new technique for space exploration because of its autonomous and deep space capability. Since the baseline of pulsar navigation approach is to observe the X rays (0.2~20keV) emitted from pulsars, a compact high temporal resolution X-ray detector is needed. In this paper an micro-channel plate(MCP) photon counting detector sensitive to X-rays is proposed. The detection system consists of a CsI photocathode, a 50mm diameter micro-channel plate (MCP) stack, a collection anode, a preamplifier, a constant fraction discriminator(CFD) and data acquisition(DAQ). The incident X-rays photons are absorbed by CsI and converted to photoelectrons, the electrons are multiplied by MCP and collected by the anode. Anode output signal is a fast pulse which need to be amplified by preamplifier and then fed to CFD circuit and DAQ for a precise timing. The total temporal resolution (ΔT) of the entire detection system could be determined by ▵tD, the intrinsic temporal resolution of cathode-MCP-anode, and ▵E the resolution of electronic system including preamplifier and CFD. The resolution of the detection system is tested to be 18.4ns in experiment.

Paper Details

Date Published: 15 August 2011
PDF: 6 pages
Proc. SPIE 8196, International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, 81961C (15 August 2011); doi: 10.1117/12.900678
Show Author Affiliations
Li-zhi Sheng, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate Univ. of CAS (Chile)
Bao-sheng Zhao, Xi'an Institute of Optics and Precision Mechanics (China)
Hui-jun Hu, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate Univ. of CAS (China)
Peng Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate Univ. of CAS (China)
Qiu-rong Yan, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate Univ. of CAS (China)
Bao-mei Chen, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate Univ. of CAS (China)
Yong-an Liu, Xi'an Institute of Optics and Precision Mechanics (China)
Xiao-ping OuYang, Northwestern Institute of Nuclear Technology (China)
Ding Chen, National Time Service Ctr. (China)


Published in SPIE Proceedings Vol. 8196:
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications
John C. Zarnecki; Carl A. Nardell; Rong Shu; Jianfeng Yang; Yunhua Zhang, Editor(s)

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