英国物理学会
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作者:... D.A. Spong , L. Garcia , R. Seki
来源:[J].Nuclear Fusion(IF 2.734), 2020, Vol.60 (4)
摘要:The aim of the present study is to perform a theoretical analysis of different strategies to stabilize energetic-ion-driven resistive interchange mode (EIC in Large Helical Device (LHD plasma. We use a reduced MHD for the thermal plasma coupled with a gyrofluid model for the ener...
作者:R. Seki , H. Yamaguchi ...
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:R. Seki , M. Nakata ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (3)
摘要:Time-resolved measurement of triton burnup is performed with a scintillating fiber detector system in the deuterium operation of the large helical device. The scintillating fiber detector system is composed of the detector head consisting of 109 scintillating fibers having a...
作者:... S. Ohdachi , K.Y. Watanabe , R. Seki
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (4)
摘要:The aim of this study is to perform a theoretical analysis of the magnetohydrodynamic (MHD) stability and energetic particle effects on a LHD equilibria, calculated during a discharge where energetic-ion-driven resistive interchange mode (EIC) events were triggered. We use the re...
作者:R. Seki , S. Satake ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (6)
摘要:This study closely investigates the plasma operation scenario for the LHD-type helical reactor FFHR-d1 in view of MHD equilibrium/stability, neoclassical transport, alpha energy loss and impurity effect. In 1D calculation code that reproduces the typical pellet discharges in LHD ...
作者:R. Seki , T. Seki ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (12)
摘要:The ion cyclotron range of frequencies (ICRF) heating power injection in the hydrogen experiment in LHD was demonstrated after the upgrade of ICRF antennas. The ICRF wave couples and accelerates the energetic particles injected by perpendicular-NBIs with 40 keV. The simulati...
作者:R. Seki , H. Nuga ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (7)
摘要:Understanding energetic particle (EP) confinement is one of the critical issues in realizing fusion reactors. In stellarator/helical devices, the research on EP confinement is one of the key topics to obtain better confinement by utilizing the flexibility of a 3D magnetic fi...
作者:R. Seki , M. Osakabe
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (4)
摘要:A deuterium experiment was initiated to achieve higher-temperature and higher-density plasmas in March 2017 in the Large Helical Device (LHD). The central ion temperature notably increases compared with that in hydrogen experiments. However, an energetic particle mode called the ...
作者:R. Seki , S. Masuzaki ...
来源:[J].Nuclear Fusion(IF 2.734), 2019, Vol.59 (9)
摘要:The effects of resonant magnetic perturbation (RMP) field on impurity radiation, divertor footprint distribution, and core plasma transport are investigated in the detachment discharges of the Large Helical Device (LHD). The RMP with m / n = 1/1 mode creates an edge magnetic isla...

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