Measurement of the toroidal radiation asymmetry during massive gas injection triggered disruptions on J-TEXT

被引：12

作者：

Tong, R. H. ^{[1
]}

Chen, Z. Y. ^{[1
,2
]}

Jiang, Z. H. ^{[1
]}

Zhang, X. L. ^{[1
]}

Cheng, Z. F. ^{[1
]}

Liu, L. Z. ^{[1
]}

Li, W. ^{[1
]}

Yan, W. ^{[1
]}

Wei, Y. N. ^{[1
]}

Lin, Z. F. ^{[1
]}

Huang, Y. ^{[1
]}

Yang, Z. J. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Int Joint Res Lab Magnet Confinement Fus & Plasma, Wuhan 430074, Hubei, Peoples R China

[2] Chengdu Univ, Chengdu 610106, Sichuan, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2018年 / 89卷 / 10期

基金：

中国国家自然科学基金;

关键词：

MITIGATION;

D O I：

10.1063/1.5035187

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Disruptions have the potential to cause severe damage to large tokamaks like ITER. The mitigation of disruption damage is one of the essential issues for the tokamak. Massive gas injection (MGI) is a technique in which large amounts of a noble gas are injected into the plasma in order to safely radiate the plasma energy evenly over the entire plasma-facing wall. However, the radiated energy during the disruption triggered by massive gas injection is found to be toroidally asymmetric. In order to investigate the spatial and temporal structures of the radiation asymmetry, the radiated power diagnostics for the J-TEXT tokamak have been upgraded. The multi-channel arrays of absolute extreme ultraviolet photodiodes have been upgraded at four different toroidal positions to investigate the radiation asymmetries during massive gas injection. It is found that the toroidal asymmetry is associated with plasma properties and MGI induced MHD activities. Published by AIP Publishing.

引用

页数：5

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