全超导托卡马克装置欧姆放电逃逸电子行为研究

卢洪伟, 胡立群, 江勇, 林士耀, 陈开云, 段艳敏, 许平

卢洪伟, 胡立群, 江勇, 林士耀, 陈开云, 段艳敏, 许平. 全超导托卡马克装置欧姆放电逃逸电子行为研究[J]. 原子能科学技术, 2009, 43(1): 22-26. DOI: 10.7538/yzk.2009.43.01.0022
引用本文: 卢洪伟, 胡立群, 江勇, 林士耀, 陈开云, 段艳敏, 许平. 全超导托卡马克装置欧姆放电逃逸电子行为研究[J]. 原子能科学技术, 2009, 43(1): 22-26. DOI: 10.7538/yzk.2009.43.01.0022
LU Hong-wei, HU Li-qun, JIANG Yong, LIN Shi-yao, CHEN Kai-yun, DUAN Yan-min, XU Ping. Behaviors of Runaway Electrons Generation on Experiment Advanced Superconducting Tokamak[J]. Atomic Energy Science and Technology, 2009, 43(1): 22-26. DOI: 10.7538/yzk.2009.43.01.0022
Citation: LU Hong-wei, HU Li-qun, JIANG Yong, LIN Shi-yao, CHEN Kai-yun, DUAN Yan-min, XU Ping. Behaviors of Runaway Electrons Generation on Experiment Advanced Superconducting Tokamak[J]. Atomic Energy Science and Technology, 2009, 43(1): 22-26. DOI: 10.7538/yzk.2009.43.01.0022

全超导托卡马克装置欧姆放电逃逸电子行为研究

详细信息
  • 中图分类号: O536;O532

Behaviors of Runaway Electrons Generation on Experiment Advanced Superconducting Tokamak

  • 摘要: 电子发生逃逸在托卡马克等离子体中是较常见的现象,特别是在等离子体破裂阶段,会产生大量的逃逸电子。本工作利用硬X射线监测系统,并结合其它相关诊断系统研究世界上第1个运行的全超导托卡马克(EAST)装置在欧姆放电的不同阶段逃逸电子的行为。研究结果表明:在欧姆放电起始阶段,逃逸电子的初级产生过程占主导地位。随着放电的进行,逃逸电子的次级雪崩过程逐渐增长,在放电后期一直到等离子体破裂阶段,雪崩过程将占据主导地位。等离子体破裂后,因存在较高的环电压而产生了高能逃逸电子拖尾。

     

    Abstract: Plasma disruption on the Tokamak device often generates a lot of runaway electrons. Primary (Dreicer) acceleration and secondary avalanching are two mechanisms responsible for the generation of runaway electrons during disruptions. The behavior of runaway electrons generation was investigated at different phases of discharges on Experiment Advanced Superconducting Tokamak. It is found that primary acceleration is the main mechanism in current ramp-up phase while avalanching played an important role in current quench. In the paper, the diagnostics system is described, and the mechanisms of runaway electrons generation in different phases of discharges are presented by hard X-ray measurement.

     

  • [1] 陈忠勇. HT-7低杂波电流驱动实验以及高能电子动力学的实验研究[D]. 合肥:中国科学院等离子体物理研究所,2006.
    [2] GILL R D. Generation and loss of runaway electrons following disruptions in JET[J]. Nucl Fusion, 1993, 33: 1 613-1 625.
    [3] YOSHINO R, KONDOH T, NEYATANI Y, et al. Fast plasma shut down by killer pellet injection in JT-60U with reduced heat flux on the divertor plate and avoiding runaway electron generation[J]. Plasma Phys Contr Fusion, 1997, 39: 313-332.
    [4] MARTIN-SOLIS J R,ESPOSITO B, SNCHEZ R, et al. Energy limit on runaway electrons in Tokamak plasmas[J]. Phys Plasmas, 1999, 6: 238-252.
    [5] JASPERS R, LOPES CARDOZO N J, SCHULLER F C, et al. Disruption generated runaway electrons in TEXTOR and ITER[J]. Nucl Fusion, 1996, 36: 367-373.
    [6] GILL R D, ALPER B, EDWARDS A W, et al. Direct observations of runaway electrons during disruptions in the JET Tokamak[J]. Nucl Fusion, 2000, 40: 163-174.
    [7] ESPOSITO B, BERTALOT L, KASCHUCK Y A, et al. A gamma ray spectrometer system for fusion applications[J]. Nucl Instrum Methods, 2002, A476: 522-526.
    [8] ESPOSITO B, MARTN-SOLS J R, POLI F M, et al. Dynamics of high energy runaway electrons in the Frascati Tokamak upgrade[J]. Phys Plasmas, 2003, 10: 2 350-2 360.
    [9] MARTIN-SOLIS J R, ESPOSITO B, SNCHEZ R, et al. Runaway electron behaviour during electron cyclotron resonance heating in the Frascati Tokamak upgrade[J]. Nucl Fusion, 2004, 44: 974-981.
    [10] MARTIN-SOLIS J R, ESPOSITO B, SNCHEZ R, et al. Comparison of runaway electron dynamics in LH and ECRH heated discharges in the Frascati Tokamak upgrade[J]. Nucl Fusion, 2005, 45: 1 524-1 533.
    [11] PLYUSNIN V V, RICCARDO V, JASPERS R, et al. Study of runaway electron generation during major disruption in JET[J]. Nucl Fusion, 2006, 46: 277-284.
    [12] JARVIS N. Neutron measurement techniques for Tokamak plasmas[J]. Plasma Phys Controlled Fusion, 1994, 36: 209-244.
  • 期刊类型引用(1)

    1. 吕生龙. 情景模拟技术在警务技战术模块化课程体系中的应用研究. 微型电脑应用. 2023(04): 156-159 . 百度学术

    其他类型引用(3)

计量
  • 文章访问数:  1553
  • HTML全文浏览量:  2
  • PDF下载量:  1659
  • 被引次数: 4
出版历程
  • 收稿日期:  2007-09-22
  • 修回日期:  2007-12-25
  • 刊出日期:  2009-01-19

目录

    /

    返回文章
    返回