全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:W.W. Heidbrink , A.W. Hyatt ...
来源:[J].Fusion Engineering and Design(IF 0.842), 2006, Vol.81 (23), pp.2807-2815
摘要:Abstract(#br)Advanced Tokamak research in DIII-D seeks to develop a scientific basis for steady-state high-performance tokamak operation. Fully noninductive ( f NI ≈ 100%) in-principle steady-state discharges have been maintained for several confinement times. These plasmas...
作者:W.W. Heidbrink , L. Bardoczi ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (8)
摘要:Modulation of various neutral beam sources probes the interaction of fast ions with tearing modes (TM) in the DIII-D tokamak. As measured by electron cyclotron emission, the tearing modes have an island width of ∼8 cm and change phase at the q = 2 surface. (Here, m is the po...
作者:W.W. Heidbrink , M. Podestà ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (8)
摘要:Experiments in the DIII-D tokamak show that many overlapping small-amplitude Alfvén eigenmodes (AEs) cause fast-ion transport to sharply increase above a critical threshold in beam power, leading to fast-ion density profile resilience and reduced fusion performance. The thre...
作者:W.W. Heidbrink , C. Pawley ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (1)
摘要:A first-ever demonstration of controlling power and torque injection through time evolution of neutral beam energy has been achieved in recent experiments at the DIII-D tokamak (Luxon 2002 Nucl. Fusion 42 614). Pre-programmed waveforms for the neutral beam energy produce pow...
作者:W.W. Heidbrink , D. Liu ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (8)
摘要:In plasmas heated with deuterium beams a deficit of the expected fusion neutron rate is an indicator of the deterioration of the fast-ion confinement, caused, for instance, by magnetohydrodynamic instabilities. The capability of predicting this deficit during the discharge r...
作者:W.W. Heidbrink , M. Hoppe ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (6)
摘要:Novel measurements and modeling of runaway electron (RE) dynamics in DIII-D have resolved experimental discrepancies and validated predictions for ITER, improving confidence that RE avoidance and mitigation can be predictably achieved. Considering RE formation, first experim...
作者:W.W. Heidbrink , A.S. Jacobsen ...
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:W.W. Heidbrink , R. Nazikian ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (5)
摘要:We show that the degradation of fast-ion confinement in steady-state DIII-D discharges is quantitatively consistent with predictions based on the effects of multiple unstable Alfvén eigenmodes on beam-ion transport. Simulation and experiment show that increasing the radius w...
作者:W.W. Heidbrink , M.A. Van Zeeland ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (12)
摘要:A real-time Alfvén eigenmode (AE) controller is designed and implemented for the first time in DIII-D. The experimental test consists of two parts: (i) open-loop and feedback control using neutral beam power as an actuator and (ii) open-loop control using electron cyclotron ...
作者:W.W. Heidbrink , M. Podestà ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (8)
摘要:During the 2016 experimental campaign of NSTX-U (Menard et al 2012 Nucl. Fusion 52 083015), long L-mode and reproducible sawtoothing plasmas have been achieved that were previously not accessible before the upgrade. This provides a good opportunity to study the effect of sawtooth...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×