Experimental investigation of the ripple induced losses of perpendicularly injected beam ions in the low aspect ratio helical system CHS
Experimental investigation of the ripple induced losses of perpendicularly injected beam ions in the low aspect ratio helical system CHS
复制标题
低纵横比螺旋系统CHS中垂直注入离子束波纹引起损耗的实验研究
DOI：
10.1088/0029-5515/41/9/316
复制
发表时间：
2001
期刊：
影响因子：
3.3
通讯作者：
V. Yavorskij
中科院分区：
文献类型：
--
作者：
M. Isobe;M. Sasao;S. Okamura;T. Kondo;S. Murakami;T. Minami;S. Kado;K. Ida;A. Shimizu;M. Osakabe;Y. Yoshimura;K. Tanaka;C. Takahashi;S. Nishimura;K. Matsuoka;V. Yavorskij
垂直注入束离子的限制已经通过中子技术在 CHS 日光管/托萨管的标准配置和漂移优化配置中进行了实验研究。实验结果表明，两种配置对捕获束离子的限制都很差。观察到的捕获束离子的损失率非常高，并且从时间尺度的角度来看，这种高损失率不能用电荷交换或碰撞散射造成的损失来解释。轨道计算后的全回转运动表明，在 CHS 等离子体的外围区域，被捕获的束离子很快就会丢失，因为它们由于拉莫尔半径较大而立即与真空室壁相交。它还表明，在核心域中，无碰撞跃迁行为是理解束离子快速损失的关键。结果表明，垂直注入束离子的磁矩在 CHS 中没有很好地守恒。垂直注入束离子的快速损失可能是由于非绝热效应导致高能离子的跃迁行为。
Confinement of perpendicularly injected beam ions has been investigated experimentally both in the standard configuration and in the drift optimized configuration of the CHS heliotron/torsatron by means of the neutron technique. The experimental results indicate that the confinement of trapped beam ions is poor in both configurations. The observed loss rate of trapped beam ions was very high and this high rate is not explained by losses due to charge exchange or collisional scattering from the timescale perspective. Full gyro-motion following orbit calculations showed that in the peripheral region of CHS plasmas, trapped beam ions are promptly lost because they immediately intersect the vacuum chamber wall due to their large Larmor radii. It also suggested that in the core domain the collisionless transition behaviour is the key to understanding the rapid loss of beam ions. It was shown that the magnetic moment of perpendicularly injected beam ions is not well conserved in CHS. The rapid losses of perpendicularly injected beam ions are probably due to non-adiabatic effects resulting in the transition behaviour of energetic ions.
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
紧凑螺旋系统中的等离子体约束物理研究
DOI：
--
发表时间：
2006
期刊：
Journal of the Korean Physical Society 49
影响因子：
--
作者：
S.Okamura;et. al.
通讯作者：
et. al.