Fast-wave power flow along SOL field lines in NSTX and the associated power deposition profile across the SOL in front of the antenna
作者: R.J. PerkinsJ.-W. AhnR.E. BellA. DialloS. GerhardtT.K. GrayD.L. GreenE.F. JaegerJ.C. HoseaM.A. JaworskiB.P. LeBlancG.J. KramerA. McLeanR. MaingiC.K. PhillipsM. PodestàL. RoquemoreP.M. RyanS. SabbaghF. ScottiG. TaylorJ.R. Wilson
作者单位: 1Princeton Plasma Physics Laboratory, Princeton, NJ, USA
2Oak Ridge National Laboratory, Oak Ridge, TN, USA
3XCEL Engineering Inc., Oak Ridge, TN, USA
4Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA
刊名: Nuclear Fusion, 2013, Vol.53 (8)
来源数据库: Institute of Physics Journal
DOI: 10.1088/0029-5515/53/8/083025
原始语种摘要: Fast-wave heating and current drive efficiencies can be reduced by a number of processes in the vicinity of the antenna and in the scrape-off layer (SOL). On NSTX from around 25% to more than 60% of the high-harmonic fast-wave power can be lost to the SOL regions, and a large part of this lost power flows along SOL magnetic field lines and is deposited in bright spirals on the divertor floor and ceiling. We show that field-line mapping matches the location of heat deposition on the lower divertor, albeit with a portion of the heat outside of the predictions. The field-line mapping can then be used to partially reconstruct the profile of lost fast-wave power at the midplane in front of the antenna, and the losses peak close to the last closed flux surface as well as the antenna. This...
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关键词翻译
关键词翻译
  • deposition 沉积
  • antenna 触角
  • SOL Safe Operating Limit
  • profile 纵断图
  • front 工祖
  • power 功率
  • divertor 分流偏滤器
  • field 
  • lines 线型
  • minimize 最小化