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Long-pulse plasma discharge on the Large Helical Device

机译:大型螺旋设备上的长脉冲等离子体放电

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A long-pulse plasma discharge of more than 30 min duration was achieved on the Large Helical Device (LHD). A plasma of n_e = 0.8 x 10~(19) m~(-3) and T_(i0) = 2.0 keV was sustained with P_(ICH) = 0.52 MW, P_(ECH) = 0.1MW and averaged P_(NBI) = 0.067 MW. The total injected heating energy was 1.3 GJ. One of the keys to the success of the experiment was a dispersion of the local plasma heat load to divertors, accomplished by sweeping the magnetic axis inward and outward. Causes limiting the long pulse plasma discharge are discussed. An ion impurity penetration limited further long-pulse discharge in the 8th experimental campaign (2004).
机译:在大型螺旋装置(LHD)上实现了30分钟以上的长脉冲等离子体放电。维持n_e = 0.8 x 10〜(19)m〜(-3)和T_(i0)= 2.0 keV的等离子体,P_(ICH)= 0.52 MW,P_(ECH)= 0.1MW,平均P_(NBI) = 0.067兆瓦。注入的总热能为1.3 GJ。实验成功的关键之一是通过向内和向外扫动磁轴来实现将局部等离子热负荷分散到分流器上。讨论了限制长脉冲等离子体放电的原因。在第8次实验(2004年)中,离子杂质渗透限制了进一步的长脉冲放电。

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