Injected mass deposition thresholds for lithium granule instigated triggering of edge localized modes on EAST
Injected mass deposition thresholds for lithium granule instigated triggering of edge localized modes on EAST
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锂颗粒的注入质量沉积阈值引发 EAST 边缘局域模式的触发
DOI：
10.1088/1741-4326/aaa2ac
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发表时间：
2018-01
期刊：
影响因子：
3.3
通讯作者：
Li J. G.
中科院分区：
文献类型：
--
作者：
Lunsford R.;Sun Z.;Maingi R.;Hu J. S.;Mansfield D.;Xu W.;Zuo G. Z.;Diallo A.;Osborne T.;Tritz K.;Canik J.;Huang M.;Meng X. C.;Gong X. Z.;Wan B. N.;Li J. G.
注入的锂颗粒迅速触发边缘局域模式(ELM)的能力已经在多个实验中得到证实。通过将直径从200微米到1毫米的颗粒水平注入到EAST H模式放电的低场侧，我们已经确定直径为600微米的颗粒触发ELMS的成功率超过95%。研究还表明，在600微米以下，触发效率大致随颗粒尺寸的增大而降低。粒子从外正平面以~80ms−-1的速度径向注入EAST上部单零点放电，用类似于ITER的钨块偏滤器。这些颗粒在整个注射周期中被单独跟踪，以确定它们触发ELM的有效性。对于那些足够大小的颗粒，ELM的触发是对颗粒注射的快速反应。通过用实验基准中性气体屏蔽(NGS)模型模拟颗粒注入，计算了迅速触发ELM所需的烧蚀质量沉积，并确定了百分比质量沉积。
The ability of an injected lithium granule to promptly trigger an edge localized mode (ELM) has been established in multiple experiments. By horizontally injecting granules ranging in diameter from 200 microns to 1 mm in diameter into the low field side of EAST H-mode discharges we have determined that granules with diameter> 600 microns are successful in triggering ELMs more than 95% of the time. It was also demonstrated that below 600 microns the triggering efficiency decreased roughly with granule size. Granules were radially injected from the outer midplane with velocities~ 80 ms− 1 into EAST upper single null discharges with an ITER like tungsten monoblock divertor. These granules were individually tracked throughout their injection cycle in order to determine their efficacy at triggering an ELM. For those granules of sufficient size, ELM triggering was a prompt response to granule injection. By simulating the granule injection with an experimentally benchmarked neutral gas shielding (NGS) model, the ablatant mass deposition required to promptly trigger an ELM is calculated and the fractional mass deposition is determined.
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影响因子：
3.3
作者：
R. Lunsford;A. Bortolon;A. Roquemore;D. Mansfield;M. Jaworski;R. Kaita;R. Maingi;A. Nagy
通讯作者：
R. Lunsford;A. Bortolon;A. Roquemore;D. Mansfield;M. Jaworski;R. Kaita;R. Maingi;A. Nagy
影响因子：
2.2
作者：
G. Kocsis;J S Bakos;R. Burhenn;B. Kardon;S. Kálvin;L. Ledl;G. Mank;G. Petravich;A. Pospieszczyk;S. Zoletnik
通讯作者：
G. Kocsis;J S Bakos;R. Burhenn;B. Kardon;S. Kálvin;L. Ledl;G. Mank;G. Petravich;A. Pospieszczyk;S. Zoletnik
影响因子：
3.1
作者：
R. Maqueda;R. Maingi;Joon-Wook Ahn;Nstx Team
通讯作者：
R. Maqueda;R. Maingi;Joon-Wook Ahn;Nstx Team
影响因子：
2.2
作者：
Wagner, F.
通讯作者：
Wagner, F.
影响因子：
3.1
作者：
Hu, J. S.;Sun, Z.;Vinyar, I.
通讯作者：
Vinyar, I.