Development of Electronic Personal Dosimeter with Hybrid Preamplifier using Semiconductor Detector

반도체 검출기를 이용한 Hybrid 전치증폭기형 전자식 개인선량계 개발

  • Lee, B.J. (Korea Atomic Energy Research Institute) ;
  • Kim, B.H. (Korea Atomic Energy Research Institute) ;
  • Chang, S.Y. (Korea Atomic Energy Research Institute) ;
  • Kim, J.S. (Korea Atomic Energy Research Institute) ;
  • Rho, S.R. (The University of Seoul)
  • Published : 2002.03.30

Abstract

An electronic personal dosimeter(EPD) with hybrid type preamplifier adopting a semiconductor detector as a radiation detector has been developed, manufactured and test-evaluated. The radiation detection characteristics of this EPD has been performance-tested by using a reference photon radiation field. After several test-irradiations to a $^{137}Cs$ gamma radiation source the radiation detection sensitivity of this EPD appeared to be $3.8\;cps/Gy{\cdot}h^{-1}$. The linearity of radiation response was kept within 8% of the dose equivalent ranges of $10{\mu}Sv{\sim}4Sv$ and the angular dependence was under less than 4% in angles of ${\pm}60^{\circ}$. It was confirmed that the energy response range was in $60{\sim}1,250keV$ given in the ISO standard. This EPD satisfied the international criteria for the EPD in the mechanical and the environmental performance test for 9 test categories according to IEC 61526.

References

  1. G. F. Knoll, Radiation Detection and Measurement, 2nd ed., John Wiley & Sons, New York(1989)
  2. National council on radiation protection and measurements, 'A handbook of radioactivity measurements procedures', NCRP report no. 58, P. 49(1978)
  3. Kowalski, E. Nuclear Electronics, Springer Verlag, New York(1970)
  4. K. hodyr and S. Wysock, 'Current Transients Induced by Fast Electrons and Bremsstrahlung in Polyethylene Films', Radiation Measurements, Vol. 26, No. 4, pp593-598(1996)
  5. Grosswendt, B. Concersion coefficients for calibrating individual photon dosemeters in terms of dose equivalents defined in an ICRU tissue cube and PMMA slabs. Rad. Prot. Dosim., Vol. 32, No 4, pp219-231(1990)
  6. 이봉재, 김봉환, 장시영, 김종수, ‘실리콘 PIN 다이오드 검출기를 이용한 전자선량계 개발’ 방사선방어학회지, 25(4), 197-205(2000)
  7. W.B. Mann, Radioactivity Measurements Principles and Practice, Pergamon Press, pp. 85-88(1988)
  8. ISO/FDIS 4037-3: X and Gamma reference radiation for calibrating dosemeters and dose rate meters and for determining their response as a function of photon energy-Paer3: Area and personal dosemeters
  9. P.W. Nicholson, 'Nuclear Electronics', Chap.5, John Wiley & Son, New York(1974)
  10. M. Jung et al., 'Dose Response Simulations of A High Sensitivity Electronic Silicon Dosimeter', Radiat. Prot. Dosim., 51(3), pp. 157-167(1994)
  11. Goulding, F. S. Pulse Shaping in Low-Noise Nuclear Amplifier, A Physical Approach to Noise Analysis, Nuclear Instruments and methods, 100, 493(1972)
  12. International Electrotechnical Commission, 'Radiation Protection Instrumentation Measurement of Personal Dose Equivalents, Hp(10) and Hp(0.07) for X, Gamma and Beta Radiations Direction Reading Personal Dose Equivalent and/or Dose Equivalent Rate Dosimeters', IEC-61526 (1998)4. Fairstein, E., and J. Hahn, Part II, Nucleonics, 2319, 81 (1965)
  13. White, D.R., Martin, R.J., and Darlison, R. Epoxy resin based tissue substitutes. Br. J. Radiol., 50, pp814-821(1977)