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Generation and Measurement of High Intermittent Heat Flux in GAMMA 10/PDX

机译:GAMMA 10 / PDX中高间歇热通量的产生和测量

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Electron cyclotron heating (ECH) power modulation experiments have been conducted for GAMMA 10/PDX to generate and control the high heat flux and to develop an edge localized mode (ELM)-like intermittent heat load pattern for divertor simulation studies. Flux and energy spectra of end-loss electrons are measured using a multi-grid energy analyzer (loss electron diagnostics, LED). ECH-induced potential formation at plug regions (P-ECH) produces high-energy electron flows along the magnetic lines of force. The power scaling of electron flux in GAMMA 10/PDX indicates that higher ECH power generates higher electron flux. In this study,a new mirror antenna is developed to generate higher heat flux and concentrate the heating power on the axis. The energy density and heat flux obtained using previous systems are 0.06 MJ/msup2 /supand 11.4 MW/msup2/sup, respectively,and those obtained using the new mirror systems are 0.09 MJ/msup2 /supand 30 MW/msup2/sup, respectively. These values are still considerably lower than those of ITER ELM (mitigated ELMs in ITER is ~0.5 MJ/msup2 /supfor t = 0.5 ms).
机译:已经针对GAMMA 10 / PDX进行了电子回旋加速器(ECH)功率调制实验,以产生和控制高热通量,并开发出类似于边缘局部模式(ELM)的间歇热负荷模式,用于偏滤器仿真研究。最终损耗电子的通量和能谱使用多栅格能量分析仪(损耗电子诊断仪,LED)进行测量。 ECH在插塞区域(P-ECH)上形成的电势形成会沿磁力线产生高能电子流。 GAMMA 10 / PDX中电子通量的功率定标表明,较高的ECH功率产生较高的电子通量。在这项研究中,开发了一种新的镜面天线,以产生更高的热通量并将加热功率集中在轴上。使用以前的系统获得的能量密度和热通量分别为0.06 MJ / m 2 和11.4 MW / m 2 ,而使用新的镜像系统获得的能量密度和热通量为0.09 MJ / m 2 和30 MW / m 2 。这些值仍远低于ITER ELM的值(在t = 0.5 ms时,在ITER中被减轻的ELM为〜0.5 MJ / m 2 )。

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