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Initial performance of the high sensitivity alpha particle detector at the Yangyang underground laboratory

  • C. Ha
  • , G. Adhikari
  • , P. Adhikari
  • , E. J. Jeon
  • , W. G. Kang
  • , B. H. Kim
  • , H. Kim
  • , Y. D. Kim
  • , Y. H. Kim
  • , H. S. Lee
  • , J. H. Lee
  • , M. H. Lee
  • , D. S. Leonard
  • , S. L. Olsen
  • , J. S. Park
  • , S. H. Yong
  • , Y. S. Yoon

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Initial performance of the UltraLo-1800 alpha particle detector at the 700 m deep Yangyang underground laboratory in Korea is described. The ionization detector uses Argon as a counting gas for measuring alpha events of a sample. We present initial calibration results and low-activity sample measurements based on the detector's pulse discrimination method and a hardware veto. A likelihood analysis that shows a separation of a bulk component from a surface component with a contamination depth from 210Po alpha particles using simulated models is presented.

Keywords

  • Gaseous detectors
  • Ionization and excitation processes
  • Particle identification methods

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