Optimization of HANARO cold neutron induced prompt gamma activation analysis system by using Monte Carlo code

  • Sy Minh Tuan Hoang
  • Gwang Min Sun
  • Jong Hwa Moon
  • Yong Sam Chung
  • Byung Gun Park


Prompt gamma activation analysis (PGAA) is a nuclear analytical technique for non-destructive determination of elemental and isotopic compositions. The principle of PGAA technique is based on detection of captured gamma-ray emitted from an analytical sample while being irradiated with neutrons. Use of a cold neutron beam guide greatly reduces the gamma-ray background at the analytical sample while maintaining a neutron capture rate is comparable to that of standard thermal neutron PGAA. A new cold neutron induced prompt gamma activation analysis (CN-PGAA) system has been under construction since April of 2009 at the HANARO Cold Neutron Building (KAERI, Republic of KOREA). In this study, the Compton suppression factor of the CN-PGAA system was estimated to be 5.5 using a 60Co radioactive source in conjunction with the MCNPX simulations. Several parameters of the CN-PGAA system were studied to estimate and optimize the performance of the system: scintillation material in the guarded detector of a Compton suppression spectrometer (CSS); the relative positions of the HPGe detector and annular detector; and the distance between the HPGe detector and back catcher BGO detectors of the CSS. In addition, the neutron ray-trace simulation package, McStas, was adopted to predict the neutron flux and wavelength distribution at the end of the cold neutron beam guide. These results served as input for the MCNPX simulation of the CN-PGAA system.


PGAA Compton suppression factor MCNPX McStas Cold neutron HPGe detector 



This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST).


  1. 1.
    Unlu K, Rios-Martinez C, Wehring BW (1995) J Radioanal Nucl Chem 193(1):145–154CrossRefGoogle Scholar
  2. 2.
    Révay Zs, Belgya T, Molnár GL (2005) J Radioanal Nucl Chem 265(2):169–173CrossRefGoogle Scholar
  3. 3.
    Belgya T, Révay Zs, Molnár GL (2005) J Radioanal Nucl Chem 265(2):181–191CrossRefGoogle Scholar
  4. 4.
    Cho SJ, Cho YG, Lee CH, Lee KH, Kim KP (2010) Nucl Instrum Methods A 634:S67–S70CrossRefGoogle Scholar
  5. 5.
    Kudjová P, Materna Th, Jolie J, Türler A, Wilk P, Baechler S, Kasztovszky Zs, Révay Zs, Belgya T (2005) J Radioanal Nucl Chem 265(2):221–227CrossRefGoogle Scholar
  6. 6.
    Çetiner NÖ, Ünlü K, Brenizer JS (2008) J Radioanal Nucl Chem 276(3):615–621CrossRefGoogle Scholar
  7. 7.
    McKinney GW (2009) LA-UR-09-2026 ARI grantees conference, Washington, DCGoogle Scholar
  8. 8.
    Fantidis JG, Nicolaou GE, Potolias C, Vordos N, Bandekas DV (2011) J Radioanal Nucl Chem. doi: 10.1007/s10967-011-1315-4
  9. 9.
    Douglas M, Friese JI, Warren GA, Bachelor PP, Farmer III OT, Choiniere AD, Schulte SM, Aalseth CE (2008) J Radioanal Nucl Chem 276(3):583–588CrossRefGoogle Scholar
  10. 10.
    Pelowit DB (2011) MCNPX 2.7.0 Extension, LA-UR-11-02295Google Scholar
  11. 11.
    Williams RG III, Gesh CJ, Pagh RT (2011) PNNL-15870Google Scholar
  12. 12.
    Yu YJ, Lee KH, Kim YJ (2005) In: Proceedings of the international symposium on research reactor and neutron science, pp 629–631Google Scholar
  13. 13.
    MCSTAS A neutron ray-trace simulation package: Accessed 5 Aug 2012
  14. 14.
    The Visual Editor for MCNPX (2011) Accessed 5 Aug 2012
  15. 15.
    Wua Y, Team FDS (2009) Fusion Eng Des 84:1987–1992CrossRefGoogle Scholar
  16. 16.
    Kiang LL, Tsou RH, Lin WJ (1993) Nucl Instrum Methods A 327:427–432CrossRefGoogle Scholar
  17. 17.
    Badran HM, Sharshar T (1999) Nucl Instrum Methods A 435:423–432CrossRefGoogle Scholar
  18. 18.
    Jones T (1999) WORM (Write One, Run Many) LA-UR-99-3594Google Scholar
  19. 19.
    ANSI/IEEE Standard 325 (1986) Test procedures for germanium gamma-rays detectorsGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • Sy Minh Tuan Hoang
    • 1
    • 2
  • Gwang Min Sun
    • 1
  • Jong Hwa Moon
    • 1
  • Yong Sam Chung
    • 1
  • Byung Gun Park
    • 3
  1. 1.Korea Atomic Energy Research Institute (KAERI)DeajeonSouth Korea
  2. 2.University of Science and TechnologyDaejeonSouth Korea
  3. 3.Seoul National UniversitySeoulSouth Korea

Personalised recommendations