Neoclassical and Anomalous Transport Analysis of Helical Reactor Plasmas

Neoclassical and Anomalous Transport Analysis of Helical Reactor Plasmas
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螺旋反应堆等离子体的新古典和反常输运分析

DOI:
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发表时间:
2004
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通讯作者:
A. Tsuneo
A. Tsuneo
中科院分区:
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作者:
Yamazaki Kozo;M. Mihail;Sakakibara Satoru;Okamura Shoichi;G. Jerónimo;Dies Javier;Funaba Hisamichi;A. Tsuneo

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标准 LHD(大型螺旋装置)型螺旋反应堆 (LHR-S) 的等离子体参数是使用具有径向抛物线轮廓校正的零维(零 D)模型以及新古典和反常输运模型的 2.0-D(1-D 输运/3-D 平衡)分析来估计的。使用全局约束尺度定律(包括“新 LHD 修改”尺度定律)的零维分析阐明了所需的 D-T 点火机尺度、磁场和约束改进因子。具有 450 MW α 粒子功率的 LHR-S 的 2.0-D 分析阐明了反馈燃烧控制行为和点燃的稳态等离子体的径向分布。在低β内移构型和较小离子异常损失的情况下,可以在长半径R~15m(比LHD大4.2倍)和磁场强度B~5T的情况下点燃等离子体。真正的高β构型导致有效螺旋波纹的增加,并且所需的密度范围变得相当高。如果我们添加离子反常输运,则点火变得困难,并且由于所需的高密度低温条件而导致热不稳定性被激发。
The plasma parameters of the standard LHD (Large Helical Device)-type helical reactor (LHR-S) are estimated using zero-dimensional (zero-D) model with radial parabolic profile correction and 2.0-D (1-D transport / 3-D equilibrium) analysis with neoclassical and anomalous transport models. Zero-dimensional analysis using global confinement scaling laws including “new LHD modified” scaling laws clarifies the required D-T ignition machine scale, magnetic field and confinement improvement factor. The 2.0-D analysis for LHR-S with 450 MW alpha particle power clarifies the feedback burn control behavior and radial profiles of ignited steady-state plasmas. In the case of low-beta inward-shifted configuration and smaller ion anomalous loss, the plasma can be ignited with the major radius R of ~15m (4.2 times larger than LHD) and the magnetic field strength B of ~5T. The real high beta configuration leads to the increase of effective helical ripple, and the required density regime becomes rather high. If we add the ion anomalous transport, the access to ignition becomes difficult and the thermal instability is found to be excited due to required high-density low-temperature conditions.