Showing 1 - 10 of 64 Journals Results
2020
UKAEA-CCFE-PR(20)115
R. Worrall B. Colling M. R. Gilbert E. Litherland-Smitha C. R. Nobs L. W. Packera C. Wilson A. Zohar
Spectrum unfolding is a key tool used together with diagnostics in the determination of nuclear fields that are associated with a range of nuclear technologies spanning fusion, fission, nuclear medicine and accelerator domains. The underlying process requires a mathematical method for solving the Fredholm integral equation of the first kind. This p…
Preprint Purchase2020
UKAEA-CCFE-PR(20)22
M.S. Anastopoulos-Tzanis B.D. Dudson C.J. Ham C.C. Hegna P.B. Snyder H.R. Wilson
A linear perturbation theory is used to model the MHD stability of tokamak equilibria under the application of external 3D magnetic perturbations [C.C. Hegna, Physics of Plasmas 21 :072502, 2014]. The symmetry breaking produces the coupling of toroidal n modes. We use ELITE [H.R. Wilson et al., Physics of Plasmas 9 :1277, 2002] to produce …
Preprint Published2020
UKAEA-CCFE-PR(20)15
R. Worrall B. Colling E. Litherl -Smith C.R. Nobs L.W. Packer C. Wilson A. Zohar
We discuss the development, testing and comparison of a combined framework of methods for per-forming neutron spectrum unfolding, which includes the UF_G and UF_M codes, based on the un-derlying mathematics of the GRAVEL and MAXED methods respectively, along with a custom pa-rameterised code, UF_P. We compared the behaviour of each method using a s…
Preprint1962
2020
UKAEA-CCFE-PR(20)07
S.F. Smith S.J.P. Pamela A. Fil M. Hoelzl G.T.A. Huijsmans A. Kirk D.Moulton O. Myatra A.J. Thornton H.R. Wilson
ELM simulations for the MAST-U Super-X tokamak have been obtained, using the JOREK code. The JOREK visco-resistive MHD model has been used to obtain comparisons of divertor configurations. The simulations show a factor 10 decrease in the peak heat flux to the outer target of the Super-X in comparison to a conventional divertor configuration. A ro…
Preprint Purchase2019
UKAEA-CCFE-PR(19)39