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作者:D. Moseev , J.W. Oosterbeek ...
来源:[J].Fusion Engineering and Design(IF 0.842), 2019, Vol.148
摘要:Abstract(#br)The reliability of gyrotron operation is significantly decreased approaching the individual maximum output power of the tube due to loss of the nominal operating mode. For the first time, this paper proposes an algorithm for an automated mode recovery (MORE) for...
作者:D. Moseev , S.K. Nielsen ...
来源:[J].Nuclear Inst. and Methods in Physics Research, A(IF 1.142), 2010, Vol.623 (2), pp.677-680
摘要:Abstract(#br)Collective Thomson scattering (CTS) is a versatile technique for diagnosing fusion plasmas. In particular, experiments on diagnosing the ion temperature and fast ion velocity distribution have been executed on a number of fusion devices. In this article the main aim ...
作者:D. Moseev , H.P. Laqua ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (3)
摘要:The efficiency of electron cyclotron heating is determined by the microwave absorption of the plasma. Good microwave absorption is also crucial for the machine safety. In this paper we present a method of evaluating the microwave absorption coefficient from stray radiation measur...
作者:D. Moseev , T. Stange ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (6)
摘要:Wendelstein 7-X (W7-X) relies on wall conditioning to control the density and the impurity content of the plasma. Wall conditioning in the first operation campaign of W7-X consisted of baking at 150 °C during 1 week prior to operation, glow discharge conditioning (GDC) in he...
作者:D. Moseev , S.K. Nielsen ...
来源:[J].Journal of Instrumentation(IF 1.869), 2019, Vol.14 (5)
摘要:The measurement of the energy spectra and densities of Α-particles and other fast ions are part of the ITER measurement requirements, highlighting the importance of energy-resolved energetic-particle measurements for the mission of ITER. However, it has been found in recent ...
作者:D. Moseev , S.K. Nielsen ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (5)
摘要:We demonstrate the measurement of a 2D MeV-range ion velocity distribution function by velocity-space tomography at JET. Deuterium ions were accelerated into the MeV-range by third harmonic ion cyclotron resonance heating. We made measurements with three neutron emission spe...
作者:D. Moseev , S. Nielsen ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (1)
摘要:Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core , near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In these cases the only source of energetic (⩾1 MeV) hy...
作者:D. Moseev , S.K. Nielsen ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (3)
摘要:We measure the deuterium density, the parallel drift velocity, and parallel and perpendicular temperatures (, ) in non-Maxwellian plasmas at ASDEX Upgrade. This is done by taking moments of the ion velocity distribution function measured by tomographic inversion of five simu...
作者:D. Moseev , S.K. Nielsen ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (9)
摘要:We discuss α -particle velocity-space diagnostic in ITER based on the planned collective Thomson scattering (CTS) and γ -ray spectrometry (GRS) systems as well as ASCOT simulations of the α -particle distribution function. GRS is sensitive to α -particles with energies MeV a...
作者:D. Moseev , P. Helander ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (10)
摘要:Ion cyclotron frequencies are generally three orders of magnitude (electron-to-ion mass ratio) smaller than the electron cyclotron frequency. Here we propose a novel way of generating electrostatic fluctuations along the magnetic field in the ion cyclotron frequency range by...

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