• Chinese Optics Letters
  • Vol. 9, Issue 6, 060401 (2011)
Baomei Chen1、2, Baosheng Zhao1, Huijun Hu1、2, Qiurong Yan1、2, and Lizhi Sheng1、2
Author Affiliations
  • 1State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
  • 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.3788/COL201109.060401 Cite this Article Set citation alerts
    Baomei Chen, Baosheng Zhao, Huijun Hu, Qiurong Yan, Lizhi Sheng. X-ray photon-counting detector based on a micro-channel plate for pulsar navigation[J]. Chinese Optics Letters, 2011, 9(6): 060401 Copy Citation Text show less

    Abstract

    The pulse time of arrival (TOA) is a determining parameter for accurate timing and positioning in X-ray pulsar navigation. The pulse TOA can be calculated by comparing the measured arrival time with the predicted arrival time of the X-ray pulse for pulsar. In this study, in order to research the measurement of pulse arrival time, an experimental system is set up. The experimental system comprises a simulator of the X-ray pulsar, an X-ray detector, a time-measurement system, and a data-processing system. An X-ray detector base is proposed on the basis of the micro-channel plate (MCP), which is sensitive to soft X-ray in the 1–10 keV band. The MCP-based detector, the structure and principle of the experimental system, and results of the pulse profile are described in detail. In addition, a discussion of the effects of different X-ray pulse periods and the quantum efficiency of the detector on pulse-profile signal-to-noise ratio (SNR) is presented. Experimental results reveal that the SNR of the measured pulse profile becomes enhanced as the quantum efficiency of the detector increases. The SNR of the pulse profile is higher when the period of the pulse is smaller at the same integral.
    Baomei Chen, Baosheng Zhao, Huijun Hu, Qiurong Yan, Lizhi Sheng. X-ray photon-counting detector based on a micro-channel plate for pulsar navigation[J]. Chinese Optics Letters, 2011, 9(6): 060401
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