Construction and experimental tests of the high frequency pellet injection system on EAST tokamak
Abstract
A high frequency deuterium pellet injection system based on extrusion and pneumatic acceleration has been recently developed and built for EAST tokamak, which is one of fully superconducting Tokamaks with ITER-like plasma configuration. It is mainly used for plasma edge localized mode control and can achieve 1-50 Hz injection rate. It has been completely installed on EAST up to now. A new differential pumping system and pellet transmission lines have been designed according to the actual condition of EAST. Recently we have tested the system systematically and injected multiple pellets into type-I ELMy H-mode plasma on EAST for the first time. Here, the test and experimental results show that the system can inject continuous pellets into plasma stably, and ELMs can be triggered by deuterium pellets in H mode plasma with negligible impact on density and stored energy. And it was also found that ELM trigger efficiency is less than 100% sometimes. This lays an important foundation for further experimental study of ELM modulation using deuterium pellet injection on EAST.
- Authors:
-
[1];
- Chinese Academy of Sciences (CAS), Hefei (China); Univ. of Science and Technology of China, Hefei (China)
- Chinese Academy of Sciences (CAS), Hefei (China)
- Chinese Academy of Sciences (CAS), Hefei (China); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE; National Key Research and Development Program of China; National Nature Science Foundation of China (NNSFC); Presidential Foundation of Hefei Inst. of Physical Science
- OSTI Identifier:
- 1660495
- Grant/Contract Number:
- 2017YFA0402500; 2017YFE0301100; 11625524; 11775261; 11605246; 11075185; 11905254; 11021565; YZJJ2019QN9
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fusion Engineering and Design
- Additional Journal Information:
- Journal Volume: 153; Journal ID: ISSN 0920-3796
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; EAST; high frequency pellet injection system; experimental test; ELM trigger
Citation Formats
Hou, Jilei, Chen, Yue, Yuan, Xiaolin, Limeng, Manni, Sun, Zhen, Zuo, Guizhong, and Hu, Jiansheng. Construction and experimental tests of the high frequency pellet injection system on EAST tokamak. United States: N. p., 2020.
Web. doi:10.1016/j.fusengdes.2020.111482.
Hou, Jilei, Chen, Yue, Yuan, Xiaolin, Limeng, Manni, Sun, Zhen, Zuo, Guizhong, & Hu, Jiansheng. Construction and experimental tests of the high frequency pellet injection system on EAST tokamak. United States. https://doi.org/10.1016/j.fusengdes.2020.111482
Hou, Jilei, Chen, Yue, Yuan, Xiaolin, Limeng, Manni, Sun, Zhen, Zuo, Guizhong, and Hu, Jiansheng. Sat .
"Construction and experimental tests of the high frequency pellet injection system on EAST tokamak". United States. https://doi.org/10.1016/j.fusengdes.2020.111482. https://www.osti.gov/servlets/purl/1660495.
@article{osti_1660495,
title = {Construction and experimental tests of the high frequency pellet injection system on EAST tokamak},
author = {Hou, Jilei and Chen, Yue and Yuan, Xiaolin and Limeng, Manni and Sun, Zhen and Zuo, Guizhong and Hu, Jiansheng},
abstractNote = {A high frequency deuterium pellet injection system based on extrusion and pneumatic acceleration has been recently developed and built for EAST tokamak, which is one of fully superconducting Tokamaks with ITER-like plasma configuration. It is mainly used for plasma edge localized mode control and can achieve 1-50 Hz injection rate. It has been completely installed on EAST up to now. A new differential pumping system and pellet transmission lines have been designed according to the actual condition of EAST. Recently we have tested the system systematically and injected multiple pellets into type-I ELMy H-mode plasma on EAST for the first time. Here, the test and experimental results show that the system can inject continuous pellets into plasma stably, and ELMs can be triggered by deuterium pellets in H mode plasma with negligible impact on density and stored energy. And it was also found that ELM trigger efficiency is less than 100% sometimes. This lays an important foundation for further experimental study of ELM modulation using deuterium pellet injection on EAST.},
doi = {10.1016/j.fusengdes.2020.111482},
journal = {Fusion Engineering and Design},
number = ,
volume = 153,
place = {United States},
year = {Sat Jan 18 00:00:00 EST 2020},
month = {Sat Jan 18 00:00:00 EST 2020}
}
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