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Design of a Badge Filter System for Measurement of Hp(10) with the New Type of TL Dosimeter $CaSO_4:Dy,P$  

Kim, H.K. (Dept. of Nuclear Engineering, Hanyang University)
Kwon, J.W. (Dept. of Nuclear Engineering, Hanyang University)
Lee, J.K. (Dept. of Nuclear Engineering, Hanyang University)
Kim, J.L. (Korea Atomic Energy Research Institute(KAERI))
Publication Information
Journal of Radiation Protection and Research / v.28, no.2, 2003 , pp. 79-85 More about this Journal
Abstract
This study was intended to estimate Hp(10) recommended by the ICRU using the $CaSO_4:Dy,P$ element developed in the KAERI. For the estimation of Hp(10), TL response should be compensated properly through the energy range using filter materials since $CaSO_4:Dy,P$ is of severe photon energy dependent response. Various experiments and computations using Monte Carlo Code were carried out for designing filter satisfying the performance requirements of the ISO related to TL dosimeter. Under the completed filter, the relative response of $CaSO_4:Dy,P$ showed $0.75{\sim}1.0$ for photons in the range of $20{\sim}662keV$. Especially it was possible to reduce the thickness of front filter and simplify the filter combination with rear filter of larger diameter and to considerably improve angular dependence by introducing taper to the filler.
Keywords
thermoluminescence dosimeter; personal dosimeter; $CaSO_4$; Hp(10); energy dependence; angular dependence;
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