• Title/Summary/Keyword: KRISS

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Recent Progress of Plasma Research at the VACUUM CENTER in KRISS

  • Yu, Sin-Jae;Kim, Jeong-Hyeong;Seong, Dae-Jin;Sin, Yong-Hyeon;Kim, Dae-Ung;Yu, Gwang-Ho;;Seo, Byeong-Hun;Na, Byeong-Geun;Jang, Hong-Yeong
    • Proceedings of the Korean Vacuum Society Conference
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    • 2013.02a
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    • pp.152-152
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    • 2013

  • 본 발표를 통해 최근 표준연구원 진공센터에서 수행된 연구들을 진공분과 회원들께 소개하려한다. 발표의 목적은 표준연구원 및 진공센터를 간략히 소개하고 최근 지원을 받아 수행된 cutoff probe, 레이져산란 실험, 대기압 플라즈마, 나노입자 실험등을 개론의 수준으로 설명하고 발견된 재미있는 물리현상을 발표함으로써 토론의 장을 마련함에 있다.

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Comparison of the standards for absorbed dose to water of the IAEA and the KRISS, Korea in accelerator photon beams

  • L. Czap;I.J. Kim;J.I. Park;C.-Y. Yi;Y. Kim;Z. Msimang
    • Nuclear Engineering and Technology
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    • v.56 no.7
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    • pp.2698-2703
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    • 2024

  • A bilateral comparison was conducted between the International Atomic Energy Agency (IAEA) and the Korea Research Institute of Standards and Science (KRISS) to measure the absorbed dose to water in accelerator photon beams. KRISS served as a linking laboratory to compare the IAEA standard with the key comparison reference value (KCRV) of the BIPM.RI(I)-K6 program, in which KRISS participated in 2017. Two ionization chambers from the IAEA were used as transfer instruments for the comparison. Both laboratories measured the calibration coefficients of these instruments and calculated the ratios. The ratio of the KRISS standard to the KCRV was applied to obtain the degree of equivalence of the IAEA, along with its uncertainty. The largest deviation of the IAEA measurement from the KCRV was 3.4 mGy/Gy, significantly smaller than the expanded uncertainty of 10.7 mGy/Gy (k = 2, 95% level of confidence). This study demonstrates the equivalence of IAEA's measurement standard for accelerator photon beams to other primary standard dosimetry laboratories. It provides evidence for the satisfactory operation of IAEA's quality management system and enhances the international credibility of the IAEA SSDL network, particularly in high-energy accelerator photon beams from linear accelerators.

  • https://doi.org/10.1016/j.net.2024.02.030 인용 PDF

Formulation of a New En Score in the Proficiency Test

  • Chul-Young Yi;In Jung Kim;Jong In Park;Yun Ho Kim;Young Min Seong
    • Progress in Medical Physics
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    • v.35 no.1
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    • pp.16-19
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    • 2024

  • A new En score of the proficiency test (PT) is formulated; it is applicable when a correlation exists between the reference and participant's values. Based on the uncertainty propagation rule given in ISO/IEC Guide 98-3 (GUM:1995), the En score covering the correlation case is newly developed for the PT. The new En score will be applied in a future PT organized by the Korea Research Institute of Standards and Science (KRISS) dosimetry team. The new En score will enhance measurement traceability and contribute to improving the quality management system of participants in the KRISS PT by avoiding performance underestimation.

  • https://doi.org/10.14316/pmp.2024.35.1.16 인용 PDF