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首页> 外文期刊>Plasma physics and controlled fusion >The behaviour of magnetic ripple wells along field lines in current heliotrons and stellarators: comparison with a classical heliotron
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The behaviour of magnetic ripple wells along field lines in current heliotrons and stellarators: comparison with a classical heliotron

机译：当前日光加速器和恒星器中沿磁场线的磁波纹井的行为：与经典日光加速器的比较

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摘要

For the stellarator-type devices of today, which are very different from the quasi-symmetric ones, the analytical conditions for the existence of two kinds of ripple wells along field lines are derived taking into account the multiple helicity and multiple toroidicity of the magnetic field. It is shown that a typical feature of the above-mentioned devices, in contrast to a classical heliotron, is a considerable deformation of magnetic wells, both ordinary and secondary, by additional ripple fields. When this deformation exceeds a critical level, one kind of magnetic ripple well can be suppressed in some toroidal region. This happens if the amplitudes of the helical and toroidal magnetic fields and the amplitudes of the ripple fields are correlated with each other through the relations known as conditions for parametric resonance. When the parametric resonance conditions are fulfilled, charged particle confinement is improved because of a suppression of the toroidal drift. [References: 36]
机译：对于今天的与准对称装置非常不同的恒星器类型的装置，考虑到磁场的多重螺旋和多重环形性，得出了沿磁场线存在两种脉动阱的分析条件。 。结果表明，与传统的日光加速器相比，上述装置的典型特征是，由于附加的纹波场，普通和次级磁阱都会发生相当大的变形。当该变形超过临界水平时，可以在某些环形区域中抑制一种磁波纹。如果螺旋形和环形磁场的振幅与纹波场的振幅通过称为参数共振条件的关系相互关联，则会发生这种情况。当满足参数共振条件时，由于抑制了环形漂移，带电粒子的约束得到改善。 [参考：36]

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