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作者:... V. Lindholm , T. Makkonen , S. Äkäslompolo
来源:[J].Journal of Nuclear Materials(IF 1.211), 2015, Vol.463, pp.459-462
摘要:Abstract(#br)In this study, 3D orbit-following simulations with the ASCOT code of a tracer injection experiment on ASDEX Upgrade (AUG) are carried out to investigate the influence of toroidal field (TF) ripple and resonant magnetic perturbations (RMPs) on global 13 C transport in...
作者:S. Sipilä , A. Snicker
来源:[J].Computer Physics Communications(IF 3.078), 2014, Vol.185 (4), pp.1310-1321
摘要:Abstract(#br)A comprehensive description of methods, suitable for solving the kinetic equation for fast ions and impurity species in tokamak plasmas using a Monte Carlo approach, is presented. The described methods include Hamiltonian orbit-following in particle and guiding ...
作者:S. Marsen , C. Silva
来源:[J].Journal of Nuclear Materials(IF 1.211), 2013, Vol.438, pp.S612-S615
摘要:Abstract(#br)We model the transport of a beryllium ( 10 Be) marker during a sequence of an inner-wall limited and a diverted Ohmic plasma phase in JET with the objective of identifying principal migration pathways. The 3D orbit-following code ASCOT is used for predictive ana...
作者:S. Bozhenkov , C. Brandt ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (11)
摘要:The optimized superconducting stellarator device Wendelstein 7-X (with major radius , minor radius , and plasma volume) restarted operation after the assembly of a graphite heat shield and 10 inertially cooled island divertor modules. This paper reports on the results from the f...
作者:... T. Kurki-Suonio , S. Äkäslompolo , JET contributors
来源:[J].Journal of Instrumentation(IF 1.869), 2017, Vol.12 (11)
摘要:Neutral particle analysis (NPA) is one of the few methods for diagnosing fast ions inside a plasma by measuring neutral atom fluxes emitted due to charge exchange reactions. The JET tokamak features an NPA diagnostic which measures neutral atom fluxes and energy spectra simultane...
作者:S. Äkäslompolo , G. Bonheure ...
来源:[J].Journal of Instrumentation(IF 1.869), 2015, Vol.10 (10)
摘要:The activation probe is a robust tool to measure flux of fusion products from a magnetically confined plasma. A carefully chosen solid sample is exposed to the flux, and the impinging ions transmute the material making it radioactive. Ultra-low level gamma-ray spectroscopy is use...
作者:S. Äkäslompolo , K. Särkimäki ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (11)
摘要:We assess the effect of the European design of the pebble-bed helium-cooled test blanket modules (TBM) on fast ion power loads on ITER material surfaces. For this purpose, the effect of not only the TBMs but also the ferritic inserts (FI), used for mitigating the toroidal fi...
作者:S. Bozhenkov , B. Buttenschön ...
来源:[J].Nature Physics(IF 19.352), 2018, Vol.14 (8), pp.855-860
摘要:Abstract(#br)The two leading concepts for confining high-temperature fusion plasmas are the tokamak and the stellarator. Tokamaks are rotationally symmetric and use a large plasma current to achieve confinement, whereas stellarators are non-axisymmetric and employ three-dime...
作者:S. Äkäslompolo , R. Bilato ...
来源:[J].Nuclear Fusion(IF 2.734), 2011, Vol.51 (10), pp.103013 (14pp)
摘要:A comprehensive suite of diagnostics has allowed detailed measurements of the Alfvén eigenmode (AE) spatial structure and subsequent fast-ion transport in the ASDEX Upgrade (AUG) tokamak [1]. Reversed shear Alfvén eigenmodes (RSAEs) and toroidal induced Alfvén eigenmodes (TA...
作者:S. Äkäslompolo , C. Angioni ...
来源:[J].Nuclear Fusion(IF 2.734), 2011, Vol.51 (9), pp.094012 (11pp)
摘要:The ASDEX Upgrade programme is directed towards physics input to critical elements of the ITER design and the preparation of ITER operation, as well as addressing physics issues for a future DEMO design. After the finalization of the tungsten coating of the plasma facing com...

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