英国物理学会
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作者:H. Nakano , M. Osakabe ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (10)
摘要:The deuterium (D) operation was initiated in the LHD in 2017. In the first campaign of the D experiments, we successfully extended the high temperature regime in the LHD. The new record of the ion temperature ( T i) of 10 keV associated with the ion internal transport ...
作者:H. Nakano , M. Kisaki ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (7)
摘要:The achievements of the deuterium beam operation of a negative-ion-based neutral beam injector (N-NBI) in the large helical device (LHD) are reported. In beam operation in LHD-NBIs, both hydrogen (H) and deuterium (D) neutral beams were generated by changing the operation ga...
作者:H. Nakano , K. Ida ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (8)
摘要:A simultaneous high ion temperature ( T i) and high electron temperature ( T e) regime was successfully extended due to an optimized heating scenario in the LHD. Such high-temperature plasmas were realized by the simultaneous formation of an electron interna...
作者:H. Nakano , A. Pimazzoni ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (1)
摘要:Neutral beam injectors are among the most important methods of plasma heating in magnetic confinement fusion devices. The propagation of the negative ions, prior to their conversion into neutrals, is of fundamental importance in determining the properties of the beam, such as its...
作者:H. Nakano , S. Kamio ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (5)
摘要:The isotope effect on impurities and bulk ion particle transport is investigated by using the deuterium, hydrogen, and isotope mixture plasma in the Large Helical Device (LHD). A clear isotope effect is observed in the impurity transport but not the bulk ion transport. The i...
作者:H. Nakano , K. Tsumori ...
来源:[J].Journal of Instrumentation(IF 1.869), 2016, Vol.11 (3)
摘要:The Cavity Ringdown Technique (CRD) is applied for negative hydrogen ion (H) density measurement in H source for the neutral beam injector. The CRD is one of the laser absorption techniques. Nd:YAG pulse laser was utilized for negative-hydrogen-ion ph...
作者:... H. Takahashi , H. Nakano , K. Tanaka
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (8)
摘要:Time evolution of carbon density during impurity-hole formation is observed on the Large Helical Device (LHD) to study the dynamic behaviors of the carbon impurity flux. The flux of carbon impurity changes from inward to outward without significant change of plasma parameters in ...
作者:H. Nakano , Y. Takeiri ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)
摘要:The discharge scenario of high temperature plasma with a helical configuration has significantly progressed. The increase of central ion temperature due to the reduction of wall recycling was clearly observed. The peaking of the ion heating profile and the reduction of charge exc...
作者:H. Nakano , Y. Takeiri ...
来源:[J].Nuclear Fusion(IF 2.734), 2008, Vol.48 (8)
摘要:Bursting energetic particle mode (EPM) and fast ion loss induced by the EPM have been observed and experimentally investigated in the Compact Helical System (CHS). A directional probe method was newly applied to neutral beam heated plasmas for fast ion measurement, and it success...
作者:H. Nakano , Y. Yoshimura ...
来源:[J].Nuclear Fusion(IF 2.734), 2011, Vol.51 (7), pp.073046 (8pp)
摘要:Geodesic acoustic modes (GAM) driven by energetic particles are observed in the Large Helical Device (LHD) by a heavy ion beam probe. The GAM localizes near the magnetic axis. It is confirmed that the energetic-particle-induced GAM is accompanied by an electrostatic potential flu...

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