• Media type: E-Article
  • Title: Prompt γ radiation measured with a Nal scintillation detector: a beam monitor for neutron scattering instruments which needs no space in the beam
  • Contributor: Holderer, O. [Author]; Zamponi, M. [Author]; Monkenbusch, M. [Author]; Engels, R. [Author]
  • Published: IOP Publ., 2014
  • Published in: Journal of physics / Conference Series 528(1), 012038 (2014). doi:10.1088/1742-6596/528/1/012038
  • Language: English
  • DOI: https://doi.org/10.1088/1742-6596/528/1/012038
  • ISSN: 1742-6596; 1742-6588
  • Origination:
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  • Description: We investigate the possibility of using the prompt γ rays emitted by aluminum windows in order to monitor the neutron flux of the beam. A Nal scintillation detector is used to detect the prompt γ rays. No additional material apart from the unavoidable Al windows along the flight path is placed in the beam. The performance of the monitor is compared to that of a standard BF3-monitor placed in the beam. Influences of a magnetic field on the photomultiplier of the Nal monitor is discussed, as well as the influence of activation gammas. At an instrument using a beam chopper the time behaviour is discussed.
  • Access State: Open Access