Michrochannel plate for position sensitive alpha particle detection

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This paper will describe the use of a microchannel plate (MCP) as the associated particle detector on a sealed tube neutron generator. The generator produces neutrons and associated alpha particles for use as a probe to locate and identify hidden explosives in associated particle imaging (API). The MCP measures the position in two dimensions and precise timing of the incident alpha particle, information which is then used to calculate the emission time and direction of the corresponding neutron. The MCP replaces the position-sensitive photomultipler tube (PSPMT) which, until recently, had been the only detector available for measuring position and timing ... continued below

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Tinsley, Paul Hurley and James August 31, 2007.

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Description

This paper will describe the use of a microchannel plate (MCP) as the associated particle detector on a sealed tube neutron generator. The generator produces neutrons and associated alpha particles for use as a probe to locate and identify hidden explosives in associated particle imaging (API). The MCP measures the position in two dimensions and precise timing of the incident alpha particle, information which is then used to calculate the emission time and direction of the corresponding neutron. The MCP replaces the position-sensitive photomultipler tube (PSPMT) which, until recently, had been the only detector available for measuring position and timing for alpha particles in neutron generator applications. Where the PSPMT uses charge division for generating position information, a process that requires a first order correction to each pulse, the MCP uses delay-line timing, which requires no correction. The result is a device with an order of magnitude improvement in both position resolution and timing compared to the PSPMT. Hardware and software development and the measurements made to characterize the MCP for API applications are described.

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  • SPIE Conference on Hard X-Ray and Gamma-Ray Detector Physics VIII; August 27, 2007

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  • Report No.: DOE/NV/25946--152
  • Grant Number: DE-AC52-06NA25946
  • Office of Scientific & Technical Information Report Number: 946613
  • Archival Resource Key: ark:/67531/metadc901368

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 31, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 16, 2016, 12:46 p.m.

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Tinsley, Paul Hurley and James. Michrochannel plate for position sensitive alpha particle detection, article, August 31, 2007; United States. (digital.library.unt.edu/ark:/67531/metadc901368/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.