Towards real time control of the internal transport barriers on JET

IF 0.3 1区艺术学 0 MUSIC

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI:10.1109/FUSION.2002.1027679

M. Riva, D. Mazon, R. Felton, X. Litaudon, G. Tresset, A. Becoulet, J. Chareau, S. Dalley, S. Dorling, E. Joffrin, D. Moreau, M. Lennholm

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引用次数: 2

Abstract

Recently a local criterion characterising the emergence and space-time evolution of internal transport barriers (ITB) has been proposed and extensively validated on the large JET database. It was shown that a dimensionless local parameter, /spl rho//spl dot/(T/sub e/) =/spl rho//sub s//L(T/sub e/) characterises with a low computational cost the typical ITB features such as the emergence time, location, collapse time and dynamics [/spl rho//sub s/ is the local Larmor radius and L(T/sub e/) is the temperature gradient scale length L(T/sub e/)=-T/sub e//(/spl part/T/sub e///spl part/R)]. We report on the recent implementation of the calculation of the ITB criterion together with the associated feedback algorithms in the real time system of JET. The system purpose is to acquire all the analogue channels of the high space resolution electron temperature ECE diagnostic (heterodyne radiometer) and to calculate in real time the relevant ITB parameters which am used for the control: the maximum value of the dimensionless local temperature gradient, the ITB radius and width, the core and volume averaged electron temperature.

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面向JET内部传输障碍的实时控制

近年来，研究人员提出了一种表征内部输运障碍(ITB)出现和时空演化的局部判据，并在大型JET数据库上进行了广泛验证。结果表明，无量纲局部参数/spl rho//spl dot/(T/sub e/)= /spl rho//sub s//L(T/sub e/)以较低的计算成本表征了典型的ITB特征，如出现时间、位置、坍缩时间和动力学[/spl rho//sub s/为局部Larmor半径，L(T/sub e/)为温度梯度尺度长度L(T/sub e/)=-T/sub e//(/spl part/T/sub e///spl part/R]。本文报道了在JET实时系统中ITB准则的计算及其相关的反馈算法的最新实现。该系统的目的是获取高空间分辨率电子温度ECE诊断(外差辐射计)的所有模拟通道，并实时计算用于控制的相关ITB参数:无因次局部温度梯度的最大值，ITB半径和宽度，核心和体积平均电子温度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

NINETEENTH CENTURY MUSIC MUSIC-

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： 19th-Century Music covers all aspects of Western art music between the mid-eighteenth and mid-twentieth centuries. We welcome--in no particular order--considerations of composers and compositions, styles, performance, historical watersheds, cultural formations, critical methods, musical institutions, ideas, and topics not named on this list. Our aim is to publish contributions to ongoing conversations at the leading edge of musical and multidisciplinary scholarship.