Development of a 2D spatial displacement estimation method for turbulence velocimetry of the gas puff imaging system on EAST

Letian LI; Shaocheng LIU; Ning YAN; Xiaoju LIU; Xiang GAO

doi:10.1088/2058-6272/ad0c24

Plasma Science and Technology > 2024 > 26(3): 034003. > DOI: 10.1088/2058-6272/ad0c24

Letian LI, Shaocheng LIU, Ning YAN, Xiaoju LIU, Xiang GAO. Development of a 2D spatial displacement estimation method for turbulence velocimetry of the gas puff imaging system on EAST[J]. Plasma Science and Technology, 2024, 26(3): 034003. DOI: 10.1088/2058-6272/ad0c24

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Development of a 2D spatial displacement estimation method for turbulence velocimetry of the gas puff imaging system on EAST

1.
Anhui University, Hefei 230039, People’s Republic of China
2.
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China

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Author Bio:
Shaocheng LIU: lshch@ipp.ac.cn

Xiang GAO: xgao@ipp.ac.cn
Corresponding author:
Shaocheng LIU, lshch@ipp.ac.cn

Xiang GAO, xgao@ipp.ac.cn
Received Date: May 14, 2023
Revised Date: August 27, 2023
Accepted Date: August 28, 2023
Available Online: March 03, 2024
Published Date: March 06, 2024

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Abstract

Abstract

A gas puff imaging (GPI) diagnostic has been developed and operated on EAST since 2012, and the time-delay estimation (TDE) method is used to derive the propagation velocity of fluctuations from the two-dimensional GPI data. However, with the TDE method it is difficult to analyze the data with fast transient events, such as edge-localized mode (ELM). Consequently, a method called the spatial displacement estimation (SDE) algorithm is developed to estimate the turbulence velocity with high temporal resolution. Based on the SDE algorithm, we make some improvements, including an adaptive median filter and super-resolution technology. After the development of the algorithm, a straight-line movement and a curved-line movement are used to test the accuracy of the algorithm, and the calculated speed agrees well with preset speed. This SDE algorithm is applied to the EAST GPI data analysis, and the derived propagation velocity of turbulence is consistent with that from the TDE method, but with much higher temporal resolution.
- gas puff imaging,
- spatial displacement estimation,
- SDE,
- edge turbulence velocity,
- TDE,
- EAST tokamak

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References (41)

References

[1]	Piras F et al 2010 Phys. Rev. Lett. 105 155003 doi: 10.1103/PhysRevLett.105.155003
[2]	Baonian Wan for the EAST and HT-7 Teams and International Collaborators 2009 Nucl. Fusion 49 104011 doi: 10.1088/0029-5515/49/10/104011
[3]	Wan Y X et al 2006 Plasma Sci. Technol. 8 253 doi: 10.1088/1009-0630/8/3/01
[4]	Harbour P J 1984 Nucl. Fusion 24 1211 doi: 10.1088/0029-5515/24/9/011
[5]	Harrison M F A, Harbour P J and Hotston E S 1983 Nucl. Technol. Fusion 3 432 doi: 10.13182/FST83-A20866
[6]	Ke R et al 2018 Rev. Sci. Instrum. 89 10D122 doi: 10.1063/1.5039350
[7]	Chodura R 1992 Contrib. Plasm. Phys. 32 219 doi: 10.1002/ctpp.2150320308
[8]	Hobbs G D and Wesson J A 1967 Plasma Phys. 9 85 doi: 10.1088/0032-1028/9/1/410
[9]	Mahdavi M A et al 1981 Phys. Rev. Lett. 47 1602 doi: 10.1103/PhysRevLett.47.1602
[10]	Tobias B et al 2010 Rev. Sci. Instrum. 81 10D928 doi: 10.1063/1.3460456
[11]	Yun G S et al 2010 Rev. Sci. Instrum. 81 10D930 doi: 10.1063/1.3483209
[12]	Li X L et al 2021 Fusion Eng. Des. 172 112915 doi: 10.1016/j.fusengdes.2021.112915
[13]	Zhu Y et al 2020 J. Instrum. 15 P07006 doi: 10.1088/1748-0221/15/07/P07006
[14]	Xie X L et al 2020 Fusion Eng. Des. 155 111636 doi: 10.1016/j.fusengdes.2020.111636
[15]	Liu S C et al 2012 Rev. Sci. Instrum. 83 123506 doi: 10.1063/1.4770122
[16]	Sechrest Y et al 2015 Phys. Plasmas 22 052310 doi: 10.1063/1.4921215
[17]	Yuan B et al 2018 J. Instrum. 13 C03033 doi: 10.1088/1748-0221/13/03/C03033
[18]	Levinson S J et al 1984 Nucl. Fusion 24 527 doi: 10.1088/0029-5515/24/5/001
[19]	Maqueda R J et al 2001 Rev. Sci. Instrum. 72 931 doi: 10.1063/1.1321009
[20]	Halpern F D et al 2015 Plasma Phys. Control. Fusion 57 054005 doi: 10.1088/0741-3335/57/5/054005
[21]	Shesterikov I et al 2013 Rev. Sci. Instrum. 84 053501 doi: 10.1063/1.4803934
[22]	Li F et al 2021 Rev. Sci. Instrum. 92 043503 doi: 10.1063/5.0040988
[23]	Shao L M et al 2013 Plasma Phys. Control. Fusion 55 105006 doi: 10.1088/0741-3335/55/10/105006
[24]	Horn B K P and Schunck B G 1981 Artif. Intell. 17 185 doi: 10.1016/0004-3702(81)90024-2
[25]	Banerjee S et al 2015 Rev. Sci. Instrum. 86 033505 doi: 10.1063/1.4914838
[26]	Lampert M, Diallo A and Zweben S J 2021 Rev. Sci. Instrum. 92 083508 doi: 10.1063/5.0058216
[27]	Kriete D M et al 2018 Rev. Sci. Instrum. 89 10E107 doi: 10.1063/1.5036535
[28]	Boedo J A et al 2014 Phys. Plasmas 21 042309 doi: 10.1063/1.4873390
[29]	Yun G S et al 2012 Phys. Rev. Lett. 109 145003 doi: 10.1103/PhysRevLett.109.145003
[30]	Hwang H and Haddad R A 1995 IEEE Trans. Image Process. 4 499 doi: 10.1109/83.370679
[31]	Keys R 1981 IEEE Trans. Acoust. Speech Signal Process. 29 1153 doi: 10.1109/TASSP.1981.1163711
[32]	Cooley J W and Tukey J W 1965 Math. Comput. 19 297 doi: 10.1090/S0025-5718-1965-0178586-1
[33]	Horvatic D, Stanley H E and Podobnik B 2011 Europhys. Lett. 94 18007 doi: 10.1209/0295-5075/94/18007
[34]	Ahmad M and Sundararajan D 1987 IEEE Trans. Circuits Syst. 34 1364 doi: 10.1109/TCS.1987.1086059
[35]	Liu S C et al 2022 Fusion Eng. Des. 179 113156 doi: 10.1016/j.fusengdes.2022.113156
[36]	Strang G 1994 Am. Sci. 82 256
[37]	Anuta P E 1970 IEEE Trans. Geosci. Electron. 8 353 doi: 10.1109/TGE.1970.271435
[38]	Wong J W H, Durante C and Cartwright H M 2005 Anal. Chem. 77 5655 doi: 10.1021/ac050619p
[39]	Ballantine J P et al 1952 Am. Math. Mon. 59 242
[40]	Diallo A et al 2017 Nucl. Fusion 57 066050 doi: 10.1088/1741-4326/aa6a24
[41]	Banerjee S, Diallo A and Zweben S J 2016 Phys. Plasmas 23 044502 doi: 10.1063/1.4946871

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