• DocumentCode
    2544997
  • Title

    Gain stabilization and pulse-shape discrimination in a thermally-variant environment for a hand-held radiation monitoring device utilizing Cs2LiYCl6:Ce3+ (CLYC) scintillator

  • Author

    Budden, Brent S. ; Stonehill, Laura C. ; Dallmann, Nicholas A. ; Michel, John M. ; Baginski, Mark J. ; Best, Dave J. ; Dathy, Corinne ; Frank, John M. ; McClish, Mickel ; Smith, Martin B.

  • Author_Institution
    Intell. & Space Res. Div., Los Alamos Nat. Lab., Los Alamos, NM, USA
  • fYear
    2012
  • fDate
    Oct. 27 2012-Nov. 3 2012
  • Firstpage
    351
  • Lastpage
    356
  • Abstract
    We have utilized CS2LiYCl6:Ce3+ (CLYC) scintillators in a hand-held instrument for radioisotope identification, known as the Advanced Radiation Monitoring Device (ARMD). The CLYC crystals in ARMD are each read out by a PMT and custom electronics designed to exploit CLYC´s pulse-shape discrimination (PSD) capabilities. ARMD is designed to function in temperatures ranging from -20 to +500°C. CLYC scintillation emission light yield and pulse shapes are a function of temperature, due to the thermal dependence of the responsible scintillation mechanisms. Additionally, PMT gain and electronics readout also exhibit temperature dependence. Gain stabilization and compensation for varying waveform profiles are therefore necessary for robust isotope identification and PSD. We present the results of a complete thermal cycle over the specified range on an ARMD core detector module and describe our method of gain stabilization and PSD compensation to account for thermallydependent waveform profiles.
  • Keywords
    portable instruments; pulse shaping; radiation monitoring; readout electronics; solid scintillation detectors; ARMD core detector module; Advanced Radiation Monitoring Device; CLYC scintillator; Cs2LiYCl6:Ce3+; electronics readout; gain stabilization; handheld radiation monitoring device; pulse shape discrimination; radioisotope identification; temperature dependence; thermal dependence; thermally variant environment; CLYC; emission; gamma ray; neutron; scintillation; temperature; waveform;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
  • Conference_Location
    Anaheim, CA
  • ISSN
    1082-3654
  • Print_ISBN
    978-1-4673-2028-3
  • Type

    conf

  • DOI
    10.1109/NSSMIC.2012.6551124
  • Filename
    6551124
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2544997