Measurements of rotational transform profile using Motional Stark Effect spectroscopy

使用运动斯塔克效应光谱测量旋转变换轮廓

• 批准号: 15206106
• 负责人: IDA Katsumi
• 金额: $ 21.22万
• 依托单位: National Institute for Fusion Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15206106/
• 关键词: Motional Stark Effect; Pitch angle of magnetic field; Rotational transform; Plasma equilibrium; soft X-ray CCD camera; モーショナルシュタルク効果; 回転変換角度

The object of the research is to study a relation between magnetic shear and transport and MHD instability in helical plasma by measuring rotational transform profiles with Motional Stark Effect spectroscopy.In 2003 fiscal year, the database of plasma plasma equilibrium for various pressure profile and current profile are developed because a local pitch angle of magnetic field is determined by the toroidal current and Pfirsch-Schluter current due to finite beta. In the preparation of Motional Stark Effect spectroscopy, cooled CCD detector is purchased and tested and software for the CCD detector has been developed.In 2004 fiscal year, the polarization spectrometer using Motional Stark Effect (Motional Stark Effect spectroscopy system) and a preliminary data was taken with the measurement in Large Helical Device. The computer code to calculate the rotational transform determining plasma characteristics from the pitch angle of magnetic field measured with the Motional Stark Effect spectroscopy. In order to study the validity of neutral beam current drive in changing the rotational transform, the current drive experiments have been done in LHD and CHS.In 2005 fiscal year, radial profiles of rotational transform are measured in the current drive experiment with neutral bema injection. Central rotational transform is reduced by the current drive and how the plasma confinement changes was studied. MHD instability is studied by reducing magnetic shear with the increase of central rotational transform. The effects of rotational transform on the plasma confinement and MHD instability are studied in these experimental research.

这项研究的目的是通过测量具有运动性恒定效应光谱的旋转变换曲线来研究磁性剪切与传输与MHD不稳定性之间的关系。2003财年，由于磁场的当前和pfirsch的磁场，因此开发了各种压力和电流的等离子体等离子体等离子体等离子体平衡的数据库，以确定各种压力谱图和电流。在制备运动状态效应光谱法时，已经开发了冷却的CCD检测器，并为CCD检测器进行了测试，并为CCD检测器进行了测试。在2004财政年度，使用Motional Stark效应（Motional Stark效应光谱系统）的极化光谱仪和大型螺旋设备的测量进行了测量。计算机代码计算旋转变换，从用运动型效应光谱测量的磁场的螺距角度来确定等离子体特性。为了研究中性光束电流驱动器在改变旋转变换中的有效性，在LHD和CHS.在2005会计年度中已经进行了当前的驱动实验，在当前的中性BEMA注入的当前驱动驱动实验中，测量了旋转变换的径向谱。当前驱动器以及如何研究了血浆限制变化，中央旋转变化减少了。通过随着中央旋转变换的增加来减少磁剪来研究MHD的不稳定性。在这些实验研究中，研究了旋转变换对等离子体限制和MHD不稳定性的影响。

项目成果

S.Takayama, K.Ida, et al.: "Measurement of magnetic field pitch angle using motional stark effect spectroscopy in the compact helical system"Rev.Sci.Instrum.. 74. 73-79 (2003)

S.Takayama、K.Ida 等人：“在紧凑螺旋系统中使用运动斯塔克效应光谱测量磁场螺距角”Rev.Sci.Instrum.. 74. 73-79 (2003)

Heat pulse propagation across the rational surface in a large helical device plasma with counter-neutral beam injection

• DOI: 10.1063/1.2044447
• 发表时间: 2005-09-01
• 期刊: PHYSICS OF PLASMAS
• 影响因子: 2.2
• 作者: Yakovlev, M;Inagaki, S;Komori, A
• 通讯作者: Komori, A

Effect of net toroidal current on measurement of diamagnetic beta value in heliotron Plasma

净环形电流对日光管等离子体抗磁β值测量的影响

• 发表时间: 2006
• 期刊: submitted to Plasma Phys Control Fusion (to be published)
• 作者: T.Yamaguchi;K.Y.Watanabe;S.Sakakibara;K.Ida;Y.Narushima;K.Narihara;K.Tanaka;T.Tokuzawa;M.Yoshinuma;T.Kobuchi;I.Yamada;K.Kawahata;H.Yamada;LHD Experimental Group
• 通讯作者: LHD Experimental Group

Z Dependence of Neutral Beam Driven Current in LHD and CHS

LHD 和 CHS 中中性束驱动电流的 Z 依赖性

• 发表时间: 2006
• 期刊: Journal of Korean Physical Society (to be published)
• 作者: K.Nagaoka;K.Y.Watanabe;K.Ida;M.Yoshinuma;et al.
• 通讯作者: et al.

Effect of Plasma current on m=1 mode in LHD

LHD 中等离子电流对 m=1 模式的影响

• 发表时间: 2006
• 期刊: Plasma Fusion Res. 1
• 作者: Y.Narushima;S.Sakakibara;K.Y.Watanabe;K.Ida;K.Narihara;S.Ohdachi;S.Inagaki;et al.
• 通讯作者: et al.