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Impact of the JET ITER-like wall on H-mode plasma fueling

机译：类JET ITER壁对H型等离子体供油的影响

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摘要

JET ITER-like wall (ILW) experiments show that the edge density evolution is strongly linked with the poloidal distribution of the ionization source. The fueling profile in the JET-ILW is more delocalized as compared to JET-C (JET with carbon-based plasma-facing components PFCs). Compared to JET-C the H-mode pedestal fueling cycle is dynamically influenced by a combination of plasma-wall interaction features, in particular: (1) edge-localized modes (ELMs) induced energetic particles are kinetically reflected on W divertor PFCs leading to distributed refueling away from the divertor depending on the divertor plasma configuration, (2) delayed molecular re-emission and outgassing of particles being trapped in W PFCs (bulk-W at the high field side and W-coated CFCs at the low field side) with different fuel content and (3) outgassing from Be co-deposits located on top of the high-field side baffle region shortly after the ELM. In view of the results of a set of well diagnosed series of JET-ILW type-I ELMy H-mode discharges with good statistics, the aforementioned effects are discussed in view of H-mode pedestal fueling capacity. The ongoing modelling activities with the focus on coupled core-edge plasma simulations and plasma-wall interaction are described and discussed also in view of possible code improvements required.
机译：类似于JET ITER的墙（ILW）实验表明，边缘密度的演变与电离源的多倍体分布密切相关。与JET-C（带有碳基等离子体组件PFC的JET）相比，JET-ILW中的加油曲线更加分散。与JET-C相比，H模式的基座加油周期受等离子-壁相互作用特征的组合动态影响，特别是：（1）边缘定位模式（ELM）诱导的高能粒子在动力学上反映在W偏滤器PFC上，从而导致（2）延迟分子的重新发射和被W PFC捕获的颗粒的脱气（高场侧为大功率W，低场侧为W包被的CFC），从而使远离扩散器的燃料分布更加分散。具有不同的燃料含量，并且（3）在ELM之后不久从位于高场侧挡板区域顶部的Be共沉积物放气。鉴于一组诊断良好的一系列JET-ILW I型ELMy H模式放电结果具有良好的统计数据，鉴于H模式基座供油能力，讨论了上述效果。鉴于需要的代码改进，还描述和讨论了正在进行的建模活动，重点是耦合核边缘等离子体仿真和等离子体-壁相互作用。

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  • 来源
    《Nuclear fusion》 |2017年第6期|066024.1-066024.9|共9页
  • 作者

    S. Wiesen; S. Brezinsek; M. Wischmeier; E. De la Luna; M. Groth; A. E. Jaervinen; E. de la Cal; U. Losada; A.M. de Aguilera; L. Frassinetti; Y. Gao; C. Guillemaut; D. Harting; A. Meigs; K. Schmid; G. Sergienko;

  • 作者单位

    Forschungszentrum Juelich GmbH, Institut fuer Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Juelich, Germany;

    Forschungszentrum Juelich GmbH, Institut fuer Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Juelich, Germany;

    Max-Planck-Institut fuer Plasmaphysik, 85748 Garching bei Muenchen, Germany;

    Laboratorio Nacional de Fusion, CIEMAT, 28040, Madrid, Spain;

    Aalto University, Otakaari, Espoo, Finland;

    Lawrence Livermore National Laboratory, Livermore, CA 94550, United States of America;

    Laboratorio Nacional de Fusion, CIEMAT, 28040, Madrid, Spain;

    Laboratorio Nacional de Fusion, CIEMAT, 28040, Madrid, Spain;

    Laboratorio Nacional de Fusion, CIEMAT, 28040, Madrid, Spain;

    Association VR, Fusion Plasma Physics, KTH, SE-10044 Stockholm, Sweden;

    Forschungszentrum Juelich GmbH, Institut fuer Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Juelich, Germany,Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China;

    Institute de Plasmas e Fusao Nuclear, IST, Univ. de Lisboa, P-1049-001, Lisboa, Portugal;

    CCFE, Culham Science Centre, Abingdon OX14 3DB, United Kingdom;

    CCFE, Culham Science Centre, Abingdon OX14 3DB, United Kingdom;

    Max-Planck-Institut fuer Plasmaphysik, 85748 Garching bei Muenchen, Germany;

    Forschungszentrum Juelich GmbH, Institut fuer Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Juelich, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    H-mode; JET; ITER-like wall; integrated modelling; pedestal fuelling; plasma-wall interaction;

    机译：H模式喷射;ITER状的墙;集成建模;底座加油等离子体-壁相互作用;

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