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Characterization of...
Characterization of JET neutron field in irradiation locations for DD, DT and TT plasmas
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- Lengar, Igor (author)
- Culham Sci Ctr, EUROfus Consortium, Abingdon, Oxon, England;Jozef Stefan Inst, Reactor Phys Div, Jamova Cesta 39, Ljubljana, Slovenia
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- Zohar, Andrej (author)
- Culham Sci Ctr, EUROfus Consortium, Abingdon, Oxon, England;Jozef Stefan Inst, Reactor Phys Div, Jamova Cesta 39, Ljubljana, Slovenia
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- Batistoni, Paola (author)
- Culham Sci Ctr, EUROfus Consortium, Abingdon, Oxon, England;ENEA, Fus Tech Unit, Via E Fermi 45, I-00044 Frascati, Italy;Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England
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- Popovichev, Sergey (author)
- Culham Sci Ctr, EUROfus Consortium, Abingdon, Oxon, England;Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England
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- Conroy, Sean (author)
- Uppsala universitet,Tillämpad kärnfysik,Culham Sci Ctr, EUROfus Consortium, Abingdon, Oxon, England
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(creator_code:org_t)
- ELSEVIER SCIENCE SA, 2019
- 2019
- English.
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In: Fusion engineering and design. - : ELSEVIER SCIENCE SA. - 0920-3796 .- 1873-7196. ; 146, s. 1967-1970
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The neutron fluxes and spectra were characterized for four locations close to the plasma and related to activation experiments, as the preparation for the upcoming experimental campaigns in JET. The focus was on the study of a variance reduction technique in order to obtain statistically significant results in the parts of the neutron energy spectra, important for irradiation experiments. The DD, DT and TT plasmas were studied with the Monte Carlo hybrid method and the use of the ADVANTG program for generation of weight windows as variance reduction method to accelerate Monte Carlo simulations. The calculations were optimized to obtain low statistical uncertainties for all energy bins in the 640 energy group structure and for all three plasma sources. This included the acceleration of calculations for reaction rates of capture reactions, i.e. in the thermal flux region in irradiation positions on the first wall. Speed-ups due to use of the hybrid method in excess of two orders of magnitude were found with respect to analog calculations despite the vicinity of the plasma source.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- JET
- KN2 detector
- Long-term irradiation station
- Neutron transport calculations
- ADVANTG
Publication and Content Type
- ref (subject category)
- art (subject category)
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