对一种强流径向电子束浸没式磁聚焦系统进行了研究和设计。首先介绍了浸没式聚焦径向电子束原理和聚焦系统结构,接着仿真研究了在不同磁场分布下浸没式聚焦400 k V/30 k A径向电子束稳定传输的束轨迹,并根据电子束波动情况优化了径向磁...对一种强流径向电子束浸没式磁聚焦系统进行了研究和设计。首先介绍了浸没式聚焦径向电子束原理和聚焦系统结构,接着仿真研究了在不同磁场分布下浸没式聚焦400 k V/30 k A径向电子束稳定传输的束轨迹,并根据电子束波动情况优化了径向磁场分布,然后设计了基于永磁体和螺线圈混合结构的径向电子束聚焦系统,最后分析了螺线圈绕制方式对聚焦系统的供电系统的影响。结果表明,径向电子束在设计的聚焦系统磁场下能以小波动稳定传输,并且与单线绕制螺线圈相比,双线绕制螺线圈回路脉冲电流前沿更短,脉冲电流宽度更窄,所需电容更小,更有利于径向电子束聚焦系统的小型化。展开更多
The intrinsic radial magnetic field（B r） in a tokamak is explored by the solution of the Grad–Shafranov equation in axisymmetric configurations through an expansion of the four terms of the magnetic surfaces. It ca...The intrinsic radial magnetic field（B r） in a tokamak is explored by the solution of the Grad–Shafranov equation in axisymmetric configurations through an expansion of the four terms of the magnetic surfaces. It can be inferred from the simulation results that at the core of the device, the tokamak should possess a three-dimensional magnetic field configuration, which could be reduced to a two-dimensional one when the radial position is greater than 0.6a. The radial magnetic field and the amzimuthal magnetic field have the same order of magnitude at the core of the device. These results can offer a reference for the analysis of the plasma instability, the property of the core plasma, and the magnetic field measurement.展开更多
目前,国内外对轴带发电机的研究主要集中在轴带发电机的恒速传动装置以及恒频逆变装置方面,并没有重点研究轴带发电机的结构。现代的轴带电机系统发展方向是:投资成本不断降低,运行周期内节能效益不断提高,稳定性不断改善,功能上要求具...目前,国内外对轴带发电机的研究主要集中在轴带发电机的恒速传动装置以及恒频逆变装置方面,并没有重点研究轴带发电机的结构。现代的轴带电机系统发展方向是:投资成本不断降低,运行周期内节能效益不断提高,稳定性不断改善,功能上要求具有长期并联运行能力,同时具有PTI(Power Take In)和PTO(Power Take Out)双模式运行能力。从电机结构上来说,基于轴径向复合磁场的发电机结构新颖、节省材料、高性价比、体积小,还可以通过减小电机长径比来提高电机转矩密度,将会是未来船用轴带电机的研究和发展方向。展开更多
The black hole model will be excluded by a very strong radial magnetic field near the Galactic Center which has been detected in 2013. Following it, the explosion mechanism, for both supernova and the hot big bang of ...The black hole model will be excluded by a very strong radial magnetic field near the Galactic Center which has been detected in 2013. Following it, the explosion mechanism, for both supernova and the hot big bang of the Universe, driven by magnetic monopoles is proposed in this paper.展开更多
文摘对一种强流径向电子束浸没式磁聚焦系统进行了研究和设计。首先介绍了浸没式聚焦径向电子束原理和聚焦系统结构,接着仿真研究了在不同磁场分布下浸没式聚焦400 k V/30 k A径向电子束稳定传输的束轨迹,并根据电子束波动情况优化了径向磁场分布,然后设计了基于永磁体和螺线圈混合结构的径向电子束聚焦系统,最后分析了螺线圈绕制方式对聚焦系统的供电系统的影响。结果表明,径向电子束在设计的聚焦系统磁场下能以小波动稳定传输,并且与单线绕制螺线圈相比,双线绕制螺线圈回路脉冲电流前沿更短,脉冲电流宽度更窄,所需电容更小,更有利于径向电子束聚焦系统的小型化。
基金Project supported by the Special Domestic Program of ITER,China(Grant No.2009GB105003)
文摘The intrinsic radial magnetic field（B r） in a tokamak is explored by the solution of the Grad–Shafranov equation in axisymmetric configurations through an expansion of the four terms of the magnetic surfaces. It can be inferred from the simulation results that at the core of the device, the tokamak should possess a three-dimensional magnetic field configuration, which could be reduced to a two-dimensional one when the radial position is greater than 0.6a. The radial magnetic field and the amzimuthal magnetic field have the same order of magnitude at the core of the device. These results can offer a reference for the analysis of the plasma instability, the property of the core plasma, and the magnetic field measurement.
文摘目前,国内外对轴带发电机的研究主要集中在轴带发电机的恒速传动装置以及恒频逆变装置方面,并没有重点研究轴带发电机的结构。现代的轴带电机系统发展方向是:投资成本不断降低,运行周期内节能效益不断提高,稳定性不断改善,功能上要求具有长期并联运行能力,同时具有PTI(Power Take In)和PTO(Power Take Out)双模式运行能力。从电机结构上来说,基于轴径向复合磁场的发电机结构新颖、节省材料、高性价比、体积小,还可以通过减小电机长径比来提高电机转矩密度,将会是未来船用轴带电机的研究和发展方向。
文摘The black hole model will be excluded by a very strong radial magnetic field near the Galactic Center which has been detected in 2013. Following it, the explosion mechanism, for both supernova and the hot big bang of the Universe, driven by magnetic monopoles is proposed in this paper.
