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.


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    Titel :

    Temporal resolution of x-ray detector for pulsar navigation


    Beteiligte:
    Sheng, Li-zhi (Autor:in) / Zhao, Bao-sheng (Autor:in) / Hu, Hui-jun (Autor:in) / Wang, Peng (Autor:in) / Yan, Qiu-rong (Autor:in) / Chen, Bao-mei (Autor:in) / Liu, Yong-an (Autor:in) / OuYang, Xiao-ping (Autor:in) / Chen, Ding (Autor:in)

    Kongress:

    International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications ; 2011 ; Beijing,China


    Erschienen in:

    Erscheinungsdatum :

    2011-08-15





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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