Generation and transport of runaway electrons during sawteeth crash in the ADITYA tokamak
作者: Harshita RajJ. GhoshR.L. TannaP.K. ChattopadhyayD. RajuS.K. JhaJ. RavalY.S. JoisaS. PurohitP.K. AtreyY.C. SaxenaRabindranath Palthe ADITYA team
作者单位: 1Institute for Plasma Research, Bhat, Gandhinagar 382428, India
2HBNI, Anushakti Nagar, Mumbai 400094, India
3Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
刊名: Nuclear Fusion, 2018, Vol.58 (7)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/aabdbf
原始语种摘要: Sawteeth oscillations are commonly observed in temporal profiles of temperatures in almost all tokamaks including ADITYA tokamak. In typical discharges of ADITYA, bursts of hard x-ray (HXR) due to interaction of runaway electrons (RE) with limiter, during sawteeth crash are regularly observed in initial period of plasma current flat-top. These HXR bursts are highly correlated with the sawteeth-crash in time, which suggests that sawtooth crash generates these runaway electrons, which then yield the HXR bursts due to their interaction with the limiter. The electric field induced in the toroidal direction due to change in poloidal magnetic field during the sawtooth crash is found to be higher than the critical electric field required for runaway generation. This induced toroidal electric...
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  • crash 事故
  • runaway 逸走
  • during 在的期间
  • tokamak 托卡马克
  • sawtooth 上向梯段回采
  • limiter 限幅器
  • observed 观察到的
  • overlapping 重叠
  • current 
  • initial 开首字母