1 / 13

The Neutron Spectrum Determination of p-D 2 O Generator by the Dosimetry -Foil Method

Nuclear Physics Institute of the ASCR Faculty of Nuclear Sciences and Physical Engineering of the CTU in Prague. The Neutron Spectrum Determination of p-D 2 O Generator by the Dosimetry -Foil Method. M. Štefánik *) , P. Bém, M. Honusek, K. Katovský,

mahina
Download Presentation

The Neutron Spectrum Determination of p-D 2 O Generator by the Dosimetry -Foil Method

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nuclear Physics Institute of the ASCR Faculty of Nuclear Sciences and Physical Engineeringof the CTU in Prague The Neutron Spectrum Determination ofp-D2O Generator by the Dosimetry-Foil Method M. Štefánik*), P. Bém, M. Honusek, K. Katovský, M.Majerle, J. Novák, and E. Šimečková *) Department of NuclearReactions NPI ASCR, pri, 250 68 Řež, Czech Republic Department of NuclearReactors FNSPE CTU, V Holešovičkách 2, 180 00 Prague 8, Czech Republic E-mail: milan.stefanik@fjfi.cvut.cz AER Working Group F – „Spent Fuel Transmutation“ and INPRO IAEA Collaborative Project SYNERGIES

  2. Content of presentation • Goals of experiments • Motivation • Experimental equipment • D2O-target station • Activation method • Measurement of p-D2O neutron spectrum • Specification of experiments, set-up, results • MCNPX calculations • Conclusion The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  3. Goals of experiments • Neutron spectrum determination of p-D2O generator • Specification of neutron field characteristic in low energy range • MCNPX model of heavy water target for direct neutron beam The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  4. Motivation • IFMIF-like neutron spectrum simulation utilizing the NPI Cyclotron U-120M and NG-2 generator • Application of simulated IFMIF neutron field for testing Eurofer • Need for knowledge of neutron spectrum in whole energy range including the low energy part The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  5. IFMIF • International Fusion Material Irradiation Facility • Accelerator driven neutron source • Source reaction: d(40 MeV) + Li • Spectrum mean energy of 14 MeV • Testing of materials for fusion reactors Deuteron beam Neutron beam Liquid Li Chamber with samples The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  6. D2O target stationof the NPI • Source of white neutron spectrum • Mean energy of 14 MeV, spectrum extending to 33 MeV • In negative ion mode of acceleration The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  7. Activation method The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  8. Neutron field spectrometry of p-D2O source #1 • Measurement of low-energy part of spectra (En < 4 MeV) • Two irradiation position • Field deformed by samples and devices The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  9. Neutron field spectrometry of p-D2O source #2 • Proton (36 MeV) beam current of 8.4 µA • 7 types of activation materials (Mn, Y, Mo, In, Lu, Cd and Au) • From thermal to fast region • Nuclearγ-spectrometrytechnique The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  10. Neutron field spectrometry of p-D2O source #3 • 21 activation reactions observed • Spectrum unfolded by modified SAND-II code • EAF-2007 library, MCNPX input spectrum The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  11. MCNPX model of heavy water target • Parallelproton beam (Ep = 36 MeV) • D2O layer, Si and PE plate • Nuclear data library: LA-150h, ENDF/B-VII • Input spectrum for SAND-II code The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  12. Conclusion • Dosimetry foil activation method used for IFMIF-likeneutron spectrum determination. • Spectral flux for energies less than 4 MeV relatively well known now. The Neutron Spectrum Determination of p-D2O Generator by the Dosimetry-Foil Method

  13. Thank you for your attention.

More Related