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| 1 | Contribution of the Large Helical Device Plasmas to Alfvén Eigenmode Physics in Toroidal Plasmas显示文摘在有三种维的配置的大螺旋状的设备(LHD ) , Alfv é n eigenmodes (AE ) 由精力充沛的离子使动摇广泛地用中立横梁被调查有单音的补品和非单调的旋转变换(ι/2π) 的激烈的血浆侧面。在有单音的补品 ι/2π-profile 的血浆,象全球的一样的核心局部性的导致 toroidicity 的 Alfv é n eigenmode (TAE ) 经常被观察。随平均 toroidal 贝它价值的增加,定义为全部的血浆压力的比率到 toroidal 磁性的压力,有低 toroidal 模式数字的核心局部性的 TAE 变得全球。在有单音的补品 ι/2π-profile 的相对高的贝它血浆,有不同 toroidal 模式数字的二 TAE 经常线性地非交往并且通过联合的三个波浪产生另外一个模式。在有强烈相反中立的横梁水流开车产生的非单调的 ι/2π-profile 的血浆,逆行砍 Alfv é n eigenmode (RSAE ) 和精力充沛的离子激动的测地学的声学的模式(鲸鱼群) 在螺旋状的血浆第一次被观察。非线性的联合也在 RSAE 和鲸鱼群之间被观察。 | K. TOI M. ISOBE M. OSAKABE F. WATANABE K. OGAWA T. TOKUZAWA A. SHIMIZU T. IDO K. IDA, T. ITO S. MORITA K. NAGAOKA K. NARIHARA M. NISHIURA S. OHDACHI S. SAKAKIBARA K. TANAKA LHD Experiment Group | 2009 | Plasma Science and Technology2009，11，4： | 1 |
| 2 | 查看详情显示文摘 | Ming Tingfeng Ohdachi Satoshi Suzuki Yasuhiro LHD Experiment Group | | 0，，： | 1 |
| 3 | Estimate of the Deposition Profile of Carbon Pellets Using a High-Speed VUV Imaging System in the LHD显示文摘The deposition profile of the impurity pellet is measured by a two-dimensional fastframing vacuum ultraviolet(VUV)camera system in the large helical device(LHD).The fast framing camera selectively measures the emission from the by drogen-like ions of carbon(C VI)with a frame rate of several kHz.From the emission profile of the hydrogen-like carbon ions,which are in the process of ionization,the initial deposition profile of the carbon is estimated using a simple one-dimensional transport model. | 明廷凤 Satoshi OHDACHI Yasuhiro SUZUKI LHD Experiment Group | 2013 | Plasma Science and Technology2013，15，12： | 1 |
| 4 | Study of first orbit losses of 1 MeV tritons using the Lorentz orbit code in the LHD显示文摘Shot-integrated measurement of the triton burnup ratio has been performed in the Large Helical Device. It was reported that the triton burnup ratio, defined as total DT neutron yield divided by total DD neutron yield, increases significantly in inward shifted configurations. To understand the magnetic configuration dependence of the triton burnup ratio, the first orbit loss fraction of 1 MeV tritons is evaluated by means of the Lorentz orbit code for various magnetic configurations. The first orbit loss of 1 MeV tritons is seen at t of less than 10-5 s and loss points of the triton are concentrated on the side of the helical coil case where the magnetic field is relatively weak. The significant decrease of the first orbit loss fraction by 15% is obtained with the inward shift of the magnetic axis position from 3.90 to 3.55 m. It is found that the decrease of first orbit loss is due to the reduction of the first orbit loss of transition and helically trapped tritons. | Kunihiro OGAWA Mitsutaka ISOBE Takeo NISHITANI Sadayoshi MURAKAMI Ryosuke SEKI Hideo NUGA Neng PU Masaki OSAKABE LHD Experiment Group | 2019 | Plasma Science and Technology2019，21，2： | 0 |
| 5 | Investigation of Experimental Con6guration for Electron Bernstein Wave Heating on LHD显示文摘为在 LHD 上由使用加热的存在电子回旋加速器(ECH ) 加热天线的电子伯恩斯坦波浪(EBW ) 的试验性的配置的调查被执行。由使用在更低的港口安装的一条天线,指导倾斜的发射非凡(X---) 从高磁场方面(HFS ) 的模式是可得到的。自从折射索引的平行部件(因为磁场的不同类, N ||) 在繁殖期间变化,当发射 X 模式穿过甚至 N || 是的基本电子回旋加速器回声(ECR ) 层时, N || 能是零中午零开始。处于如此的一个条件,如果电子密度在某个水平上面,没有外面被抑制并且能对在 Doppler 被吸收的 EBW 变换模式,倾斜地发射的 X 模式能传递基本 ECR 层转移 ECR 层。由使用在水平港口安装的一条天线,向在稠密上的血浆的从更低的磁场方面(LFS ) 的倾斜的发射是可得到的。经由平常的模式(O) 的模式变换过程的 EBW 的刺激非凡的模式(X) 电子伯恩斯坦波浪(B) 被期望, O 模式向一个适当方向发射。O-X-B 模式变换率和力量免职的区域被改变磁场力量和发射方向调查。调查的结果建议在核心区域的有效加热由使用存在天线是困难的。发射天线的最后的镜子的重新整理可以被需要。 | Hiroe IGAMI Ryosuke IKEDA Hiromi TAKAHASHI Yasuo YOSHIMURA Takashi SHIMOZUMA Shin KUBO Hitoshi TANAKA Kazunobu NAGASAKI Takashi MUTOH the LHD Experiment Group | 2009 | Plasma Science and Technology2009，11，4： | 0 |
| 6 | Plasma Boundary Position Measurements Using Frequency Sweep Microwave Reflectometer in LHD显示文摘宽带频率悦耳的微波反射计系统,有快、稳定的频率的能力打扫操作,在大螺旋状的设备(LHD ) 被使用测量高温度的血浆的边界。微波什么时候被发射,与非凡的极化,从有它的频率的磁场的低地方面,扫了从对高度低,最小的右边的截止频率的微波最在外面被反映。我们然后能由从截止的层测量反映的力量的变化估计血浆边界位置。 | T.TOKUZAWA K.KAWAHATA K.TANAKA Y.ITO LHD Experiment Group 凌必利 | 2009 | Plasma Science and Technology2009，11，4： | 0 |
| 7 | Magnetic Configuration Effects on Fast Ion Losses Induced by Fast Ion Driven Toroidal Alfvén Eigenmodes in the Large Helical Device显示文摘Beam-ion losses induced by fast-ion-driven toroidal Alfvén eigenmodes (TAE) were measured with a scintillator-based lost fast-ion probe (SLIP) in the large helical device (LHD). The SLIP gave simultaneously the energy E and the pitch angle χ=arccos(v // /v) distribution of the lost fast ions. The loss fluxes were investigated for three typical magnetic configurations of R ax vac =3.60 m, 3.75 m, and 3.90 m, where R ax vac is the magnetic axis position of the vacuum field. Dominant losses induced by TAEs in these three configurations were observed in the E/χ regions of 50~190 keV/40°, 40~170 keV/25°, and 30~190 keV/30°, respectively. Lost-ion fluxes induced by TAEs depend clearly on the amplitude of TAE magnetic fluctuations, R ax vac and the toroidal field strength Bt . The increment of the loss fluxes has the dependence of (bTAE /Bt ) s . The power s increases from s = 1 to 3 with the increase of the magnetic axis position in finite beta plasmas. | K.OGAWA M.ISOBE K.TOI F.WATANABE D.A.SPONG A.SHIMIZU M.OSAKABE D.S.DARROW S.OHDACHI S.SAKAKIBARA LHD Experiment Group | 2012 | Plasma Science and Technology2012，14，4： | 0 |
| 8 | Improvement of Plasma Performance Using Carbon Pellet Injection in Large Helical Device显示文摘 | Shigeru MORITA Motoshi GOTO Kenichi NAGAOKA Chunfeng DONG Hangyu ZHOU Zhengying CUI Yunbo DONC Xiang GAO TKatsumi IDA Katsunori IKED Osamu KANEKO Shiyao LIN Haruhisa NAKANO Masaki OSAKABE Ryuichi SAKAMOTO Yasuhiko TAKEIRI Ang TI Katsuyoshi TSUMORI Mikiro YOSHINUMA LHD experiment group | 2011 | Plasma Science and Technology2011，13，3： | 0 |
| 9 | Observation of MHD Instabilities Driven by Energetic Electrons in the Large Helical Device显示文摘Coherent magnetic fluctuations in an acoustic range of frequency have been regularly observed in low-density(n_e<0.2×10^(19)m^(-3))plasmas with strong second harmonic electron cyclotron resonance heating(ECRH)on the Large Helical Device.Hard X-ray measurements indicated that energetic electrons are generated in these ECRH discharges.The magnetic fluctuations are suppressed in higher density discharges where energetic electrons are not present.The ECRH power modulation experiment indicated that the observed magnetohydrodynamic(MHD)mode has an acoustic nature rather than an Alfvenic nature. | Mitsutaka ISOBE Kunihiro OGAWA Akihiro SHIMIZU Masaki OSAKABE Shin KUBO K.TOI the LHD Experiment Group | 2015 | Plasma Science and Technology2015，17，4： | 0 |
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