A dimensional extrapolation technique for ITER
A dimensional extrapolation technique for ITER
复制标题
ITER 的维度外推技术
DOI：
10.1088/0029-5515/41/2/302
复制
发表时间：
2001
期刊：
影响因子：
3.3
通讯作者：
P. Barabaschi
中科院分区：
文献类型：
--
作者：
P. Barabaschi
介绍了一种新的外推ITER类机器性能的方法。该程序通过相似方法利用ITER ELMy H模式数据库，通过使用ITER设计演变过程中开发的托卡马克系统代码，将每次放电推断为满足ITER性能要求的机器。除其他外，这种方法试图克服与同时选择无量纲参数相关的困难，特别是当接近它们各自的极限时，这些参数可能会有一些影响能量约束时间的重要相互作用。该方法还应用于ITER物理基础缩放，以开发一种非统计方法，其中核聚变功率外推为常数β，并且假定约束遵循gyroBohm形式。在这两种情况下，在ELMy H模式数据库中的一千多个放电中，只有不到一半的放电被推断为Q = 10的机器，其主要半径小于8米。然而，大量的放电确实可以推断出Q = 10且R<6.2 m的机器。这加强了人们对ITER当前参数选择的信心。此外，从这一分析中，有可能从许多机器中识别出一组高性能的“ITER相关”放电，这可以作为研究禁闭进一步改进的起点。
A novel methodology for extrapolation of the performance of ITER class machines is introduced. This procedure utilizes the ITER ELMy H mode database by means of a similarity approach where every discharge is extrapolated to a machine satisfying the ITER performance requirements through the use of the tokamak system code developed during the course of the ITER design evolution. This approach attempts, amongst other things, to overcome the difficulty associated with the simultaneous choice of non-dimensional parameters which, in particular when close to their respective limits, may have some significant mutual interactions affecting energy confinement time. The methodology is also applied to the ITER Physics Basis scalings to develop a non-statistical approach where fusion power is extrapolated at constant beta and confinement is assumed to follow a gyroBohm form. In both cases, out of more than a thousand discharges in the ELMy H mode database, less than half turn out to extrapolate to a Q = 10 machine whose major radius is smaller than 8 m. However, a significant number of discharges do extrapolate to a Q = 10 machine with R<6.2 m. This strengthens confidence in the present choice of ITER parameters. In addition, from this analysis, it has been possible to identify a set of high performance `ITER relevant' discharges from a number of machines, which could be used as starting points for investigation of further improvements in confinement.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
影响因子：
3.3
作者：
Shimada, M.;Campbell, D. J.;Sipps, A. C. C.
通讯作者：
Sipps, A. C. C.