Synergetic heating of D-NBI ions in the vicinity of the mode conversion layer in H-D plasmas in JET with the ITER like wall
Synergetic heating of D-NBI ions in the vicinity of the mode conversion layer in H-D plasmas in JET with the ITER like wall
复制标题
JET 中 H-D 等离子体模式转换层附近的 D-NBI 离子与 ITER 类壁的协同加热
DOI：
10.1051/epjconf/201715702006
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
J. Wright
中科院分区：
文献类型：
--
作者：
J. Ongena;Y. Kazakov;Y. Baranov;C. Hellesen;J. Eriksson;T. Johnson;V. Kiptily;M. Mantsinen;M. Nocente;R. Bilato;A. Cardinali;C. Castaldo;K. Crombé;A. Czarnecka;R. Dumont;J. Faustin;L. Giacomelli;V. Goloborod’ko;J. Graves;P. Jacquet;N. Krawczyk;E. Lerche;L. Meneses;M. Nave;H. Patten;M. Schneider;D. V. Eester;H. Weisen;J. Wright
本文讨论了用快注入NBI离子作为共振“第三”种离子加热混合等离子体的“三离子”种离子回旋共振辐射（ICRF）技术的推广。在这种情况下，ICRF功率被模式转换层附近的快束离子吸收，其中左旋极化RF电场E +被强烈增强。在束速度分布中具有接近模式转换层的多普勒频移共振的离子有效地吸收RF功率并经历加速。我们展示了第一个实验观测的ICRF加热的D-NBI离子在H-D等离子体中的JET与ITER一样的壁。在协议的理论预测和数值模拟，加速的D-NBI离子在这个D-（DNBI）-H的情况下，证实了几个快离子测量。这里讨论的加热方案的扩展是D-T等离子体中的T-NBI和D-NBI离子的加速，提供了在JET中的未来D-T活动中进一步提高Q值的潜力。
This paper discusses the extension of the ‘three-ion’ species ICRF technique for heating mixture plasmas using fast injected NBI ions as resonant ‘third’ species. In this scenario the ICRF power is absorbed by the fast beam ions in the vicinity of the mode conversion layer where the left-hand polarized RF electric field E + is strongly enhanced. The ions in the beam velocity distribution that have a Doppler-shifted resonance close to the mode conversion layer efficiently absorb RF power and undergo acceleration. We show first experimental observations of ICRF heating of D-NBI ions in H-D plasmas in JET with the ITER-like wall. In agreement with theoretical predictions and numerical modelling, acceleration of the D-NBI ions in this D-(DNBI )-H scenario is confirmed by several fast-ion measurements. An extension of the heating scheme discussed here is acceleration of T-NBI and D-NBI ions in D-T plasmas, offering the potential to further boost the Q -value in future D-T campaigns in JET.