Effect of the calibration in water and the build-up cap on the Mg(Ar) ionization chamber measurements

H. Koivunoro (Corresponding Author), H. Hyvönen, J. Uusi-Simola, I. Jokelainen, A. Kosunen, M. Kortesniemi, T. Seppälä, Iiro Auterinen, S. Savolainen

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

Magnesium-walled argon gas flow ionization chamber (Mg(Ar)) is used for photon dose measurements in the epithermal neutron beam of FiR 1 reactor in Finland. In this study, the photon dose measurements were re-evaluated against calculations applying a new chamber calibration factor defined in water instead of in air. Also, effect of the build-up cap on the measurements was investigated. The new calibration factor provides improved agreement between measured and calculated photon dose. Use of the build-up cap does not affect the measured signal in water in neutron beam.
Original languageEnglish
Pages (from-to)1901-1903
Number of pages3
JournalApplied Radiation and Isotopes
Volume69
Issue number12
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

ionization chambers
caps
neutron beams
dosage
photons
water
Finland
gas flow
magnesium
chambers
reactors
argon
air

Keywords

  • BNCT
  • 60Co
  • dosimetry
  • ionization chamber
  • SERA
  • MCNP

Cite this

Koivunoro, H., Hyvönen, H., Uusi-Simola, J., Jokelainen, I., Kosunen, A., Kortesniemi, M., ... Savolainen, S. (2011). Effect of the calibration in water and the build-up cap on the Mg(Ar) ionization chamber measurements. Applied Radiation and Isotopes, 69(12), 1901-1903. https://doi.org/10.1016/j.apradiso.2011.03.037
Koivunoro, H. ; Hyvönen, H. ; Uusi-Simola, J. ; Jokelainen, I. ; Kosunen, A. ; Kortesniemi, M. ; Seppälä, T. ; Auterinen, Iiro ; Savolainen, S. / Effect of the calibration in water and the build-up cap on the Mg(Ar) ionization chamber measurements. In: Applied Radiation and Isotopes. 2011 ; Vol. 69, No. 12. pp. 1901-1903.
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abstract = "Magnesium-walled argon gas flow ionization chamber (Mg(Ar)) is used for photon dose measurements in the epithermal neutron beam of FiR 1 reactor in Finland. In this study, the photon dose measurements were re-evaluated against calculations applying a new chamber calibration factor defined in water instead of in air. Also, effect of the build-up cap on the measurements was investigated. The new calibration factor provides improved agreement between measured and calculated photon dose. Use of the build-up cap does not affect the measured signal in water in neutron beam.",
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author = "H. Koivunoro and H. Hyv{\"o}nen and J. Uusi-Simola and I. Jokelainen and A. Kosunen and M. Kortesniemi and T. Sepp{\"a}l{\"a} and Iiro Auterinen and S. Savolainen",
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Koivunoro, H, Hyvönen, H, Uusi-Simola, J, Jokelainen, I, Kosunen, A, Kortesniemi, M, Seppälä, T, Auterinen, I & Savolainen, S 2011, 'Effect of the calibration in water and the build-up cap on the Mg(Ar) ionization chamber measurements', Applied Radiation and Isotopes, vol. 69, no. 12, pp. 1901-1903. https://doi.org/10.1016/j.apradiso.2011.03.037

Effect of the calibration in water and the build-up cap on the Mg(Ar) ionization chamber measurements. / Koivunoro, H. (Corresponding Author); Hyvönen, H.; Uusi-Simola, J.; Jokelainen, I.; Kosunen, A.; Kortesniemi, M.; Seppälä, T.; Auterinen, Iiro; Savolainen, S.

In: Applied Radiation and Isotopes, Vol. 69, No. 12, 2011, p. 1901-1903.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of the calibration in water and the build-up cap on the Mg(Ar) ionization chamber measurements

AU - Koivunoro, H.

AU - Hyvönen, H.

AU - Uusi-Simola, J.

AU - Jokelainen, I.

AU - Kosunen, A.

AU - Kortesniemi, M.

AU - Seppälä, T.

AU - Auterinen, Iiro

AU - Savolainen, S.

N1 - Special Issue: 14th International Conference on Neutron Capture Therapy

PY - 2011

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N2 - Magnesium-walled argon gas flow ionization chamber (Mg(Ar)) is used for photon dose measurements in the epithermal neutron beam of FiR 1 reactor in Finland. In this study, the photon dose measurements were re-evaluated against calculations applying a new chamber calibration factor defined in water instead of in air. Also, effect of the build-up cap on the measurements was investigated. The new calibration factor provides improved agreement between measured and calculated photon dose. Use of the build-up cap does not affect the measured signal in water in neutron beam.

AB - Magnesium-walled argon gas flow ionization chamber (Mg(Ar)) is used for photon dose measurements in the epithermal neutron beam of FiR 1 reactor in Finland. In this study, the photon dose measurements were re-evaluated against calculations applying a new chamber calibration factor defined in water instead of in air. Also, effect of the build-up cap on the measurements was investigated. The new calibration factor provides improved agreement between measured and calculated photon dose. Use of the build-up cap does not affect the measured signal in water in neutron beam.

KW - BNCT

KW - 60Co

KW - dosimetry

KW - ionization chamber

KW - SERA

KW - MCNP

U2 - 10.1016/j.apradiso.2011.03.037

DO - 10.1016/j.apradiso.2011.03.037

M3 - Article

VL - 69

SP - 1901

EP - 1903

JO - Applied Radiation and Isotopes

JF - Applied Radiation and Isotopes

SN - 0969-8043

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ER -