LHD的主要目标之一是扩展螺旋系统的等离子体约束数据库，并证明这种扩展的等离子体约束特性在稳态下是持续的。在各种等离子体参数区域中，无碰撞区域中的约束性质的研究尤为重要。电子回旋共振加热（ECRH）已被广泛用于这些约束研究的LHD等离子体从最初的操作。系统优化，包括修改的传输和天线系统进行了特别强调的局部加热性能。其结果是，中心电子温度超过10 keV的电子密度为0.6 × 10 $^{19}$ m $^{-3}$附近的磁轴。电子温度分布的特点是由一个陡峭的梯度类似于在托卡马克和仿星器中观察到的内部传输势垒。168 GHz ECRH系统在超过1.0 x 10 $^{20}$ m $^{-3}$的密度下表现出有效的加热。连续ECRH系统成功运行，维持756 s放电.
英文摘要：
One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state. Among the various plasma parameter regimes, the study of confinement properties in the collisionless regime is of particular importance. Electron cyclotron resonance heating (ECRH) has been extensively used for these confinement studies of the LHD plasma from the initial operation. The system optimizations including the modification of the transmission and antenna system are performed with the special emphasis on the local heating properties. As the result, central electron temperature of more than 10 keV with the electron density of 0.6 x 10$^{19}$ m$^{-3}$ is achieved near the magnetic axis. The electron temperature profile is characterized by a steep gradient similar to those of an internal transport barrier observed in tokamaks and stellarators. 168 GHz ECRH system demonstrated efficient heating at over the density more than 1.0 x 10$^{20}$ m$^{-3}$. CW ECRH system is successfully operated to sustain 756 s discharge.
National Institute for Fusion Science（国立研究开发法人核融合科学研究所）；Graduate School of Frontier Sciences, The University of Tokyo（东京大学前沿科学研究生院）；National Institutes for Quantum Science and Technology（国立研究开发法人量子科学技术研究开发机构）；Chubu University（中部大学）；Kyoto Fusioneering Ltd.（京都聚变工程有限公司）
Hollow toroidal rotation profiles in strongly electron heated H-mode plasmas in the ASDEX Upgrade tokamak
Max Planck Institute for Plasma Physics（马克斯·普朗克等离子体物理研究所）；Department of Applied Physics and Applied Mathematics, Columbia University（哥伦比亚大学应用物理与应用数学系）；VTT（芬兰技术研究中心VTT）
Achievement of 1 MA Discharges in Hydrogen-Boron Plasmas on EXL-50U
Hebei Key Laboratory of Compact Fusion（河北紧凑型聚变重点实验室）；ENN Science and Technology Development Co., Ltd.（新奥科技发展有限公司）；Hefei University of Technology（合肥工业大学）；Southwestern Institute of Physics（西南物理研究院）；Forschungszentrum Jülich GmbH, Institute of Fusion Energy and Nuclear Waste Management- Plasmaphysik（于利希研究中心核能与核废物管理研究所等离子体物理部）
Systematic comparison of VMEC and HINT equilibrium calculations for finite-beta LHD plasmas
Hiroshima University（广岛大学）；Universitat Politècnica de Catalunya - BarcelonaTech (UPC)（加泰罗尼亚理工大学）；National Institute for Quantum Science and Technology, Naka Institute for Fusion Science and Technology（量子科学技术研究机构那霸聚变科学与技术研究所）；National Institute for Quantum Science and Technology, Rokkasho Institute for Fusion Energy（量子科学技术研究机构六所聚变能源研究所）
First achievement of 100 million degree electron temperatures in a spherical torus: the EXL-50U
Beijing ENN Fusion Energy Science and Technology Co., Ltd.（北京新奥聚能科技有限公司）；Beijing Key Laboratory of High Magnetic Field Spherical Torus Fusion Energy（北京市高磁场球马克托聚变能重点实验室）；Hebei Key Laboratory of Compact Fusion（河北省紧凑型聚变重点实验室）；School of Physics, East China University of Science and Technology（华东理工大学物理学院）；School of Resource Environment and Safety Engineering, University of South China（南华大学资源环境与安全工程学院）；International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology（华中科技大学电气与电子工程学院先进电磁工程与技术国家重点实验室磁约束聚变与等离子体物理国际联合研究实验室）；Southwestern Institute of Physics（西南物理研究院）
