...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Computer physics communications >Equilibrium reconstruction in an iron core tokamak using a deterministic magnetisation model
【24h】

Equilibrium reconstruction in an iron core tokamak using a deterministic magnetisation model

机译：使用确定性磁化模型的铁芯托卡卡克均衡重建

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

AbstractIn many tokamaks ferromagnetic material, usually referred to as an iron-core, is present in order to improve the magnetic coupling between the solenoid and the plasma. The presence of the iron core in proximity to the plasma changes the magnetic topology with consequent effects on the magnetic field structure and the plasma boundary. This paper considers the problem of obtaining the free-boundary plasma equilibrium solution in the presence of ferromagnetic material based on measured constraints. The current approach employs a model described by O’Brien et?al. (1992) in which the magnetisation currents at the iron–air boundary are represented by a set of free parameters and appropriate boundary conditions are enforced via a set of quasi-measurements on the material boundary. This can lead to the possibility of overfitting the data and hiding underlying issues with the measured signals. Although the model typically achieves good fits to measured magnetic signals there are significant discrepancies in the inferred magnetic topology compared with other plasma diagnostic measurements that are independent of the magnetic field. An alternative approach for equilibrium reconstruction in iron-core tokamaks, termed the deterministic magnetisation model is developed and implemented in EFIT++. The iron is represented by a boundary current with the gradients in the magnetisation dipole state generating macroscopic internal magnetisation currents. A model for the boundary magnetisation currents at the iron–air interface is developed using B-Splines enabling continuity to arbitrary order; internal magnetisation currents are allocated to triangulated regions within the iron, and a method to
机译：<！[cdata [ Abstract 在许多Tokamaks铁磁性材料中，通常称为铁芯，以改善螺线管和等离子体之间的磁耦合。靠近等离子体的铁芯的存在改变了磁性拓扑，随后对磁场结构和等离子体边界的影响。本文考虑基于测量的约束，在铁磁材料存在下获得自由边界等离子体平衡溶液的问题。目前的方法采用o'brien et？al描述的模型。 （1992）其中铁 - 空气边界处的磁化电流由一组自由参数表示，并且通过材料边界上的一组准测量来强制强制实施适当的边界条件。这可能导致将数据过度和隐藏潜在信号的可能性有可能。尽管模型通常实现良好的赋予测量磁信号，但与独立于磁场的其他等离子体诊断测量相比，推断磁拓扑中存在显着的差异。在EFIT ++中开发并实施了铁芯Tokamak中的均衡方法的替代方法，称为确定性磁化模型。铁由磁化偶极状态中的梯度产生宏观内部磁化电流的界限表示。使用B样曲线开发了铁空间接口处的边界磁化电流模型，从而实现了任意顺序的连续性;内部磁化电流被分配给铁内的三角区域，以及一种方法

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号