Nuclear Fusion (Jan 2023)
Observation of local density increase during pellet homogenization on EAST
- J. Huang,
- T. Zhang,
- J. Zhang,
- Y.F. Liang,
- Y.M. Wang,
- L. Liao,
- J.L. Hou,
- X. Han,
- K.X. Ye,
- K.N. Geng,
- H.M. Xiang,
- F. Wen,
- F.B. Zhong,
- G.S. Li,
- M.F. Wu,
- Z. Zhou,
- S.Q. Yang,
- Z.Q. Zhou,
- L. Yu,
- H.Q. Liu,
- A. Krämer-Flecken,
- X. Gao,
- G. Zhuang,
- the EAST Team
Affiliations
- J. Huang
- ORCiD
- University of Science and Technology of China , Hefei, Anhui 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China; Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC) , 52425 Jülich, Germany
- T. Zhang
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- J. Zhang
- University of Science and Technology of China , Hefei, Anhui 230026, China
- Y.F. Liang
- ORCiD
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC) , 52425 Jülich, Germany
- Y.M. Wang
- Hebei Key Laboratory of Compact Fusion , Langfang 065001, China; ENN Science and Technology Development Co., Ltd , Langfang 065001, China
- L. Liao
- University of Science and Technology of China , Hefei, Anhui 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China; Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC) , 52425 Jülich, Germany
- J.L. Hou
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- X. Han
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- K.X. Ye
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- K.N. Geng
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- H.M. Xiang
- ORCiD
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC) , 52425 Jülich, Germany; Advanced Energy Research Center, Shenzhen University , Shenzhen 518060, China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, China
- F. Wen
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- F.B. Zhong
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- G.S. Li
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- M.F. Wu
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- Z. Zhou
- University of Science and Technology of China , Hefei, Anhui 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- S.Q. Yang
- University of Science and Technology of China , Hefei, Anhui 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- Z.Q. Zhou
- University of Science and Technology of China , Hefei, Anhui 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- L. Yu
- University of Science and Technology of China , Hefei, Anhui 230026, China; Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- H.Q. Liu
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- A. Krämer-Flecken
- ORCiD
- Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung-Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC) , 52425 Jülich, Germany
- X. Gao
- ORCiD
- Institute of Plasma Physics, Chinese Academy of Sciences , Hefei, Anhui 230031, China
- G. Zhuang
- University of Science and Technology of China , Hefei, Anhui 230026, China
- the EAST Team
- DOI
- https://doi.org/10.1088/1741-4326/ad0efa
- Journal volume & issue
-
Vol. 64,
no. 1
p. 016031
Abstract
By combining the X-mode polarized lower and upper cut-off reflections obtained from the density profile reflectometer, we have successfully attained a comprehensive density profile spanning from the edge to the core region in pellet injection (PI) experiments on EAST. During the homogenization process after PI on EAST, an innovative method was introduced to quantify the local density increase. This approach employed the distinctive ‘dual-reflection’ phenomenon observed in the EAST microwave reflectometer, encompassing measurements of both the X-mode lower and upper cut-off frequencies. Furthermore, experimental investigations were carried out on EAST to comprehensively explore the parallel and poloidal expansion of the high-density pellet cloud. Notably, this study marks the first instance of measuring expansion velocities of pellet materials in both parallel and poloidal directions on EAST. A comparative analysis was performed initially between these experimental measurements and simulation results obtained from the HPI2 code, marking a pivotal stride towards enhancing its applicability in EAST.
Keywords
