New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak

S. C. Liu; L. M. Shao; S. J. Zweben; G.S. Xu; H. Y. Guo; B. Cao; H. Q. Wang; L. Wang; Ning Yan; S. B. Xia; W. Zhang; R. Chen; L. Chen; S. Y. Ding; H. Xiong; Y. Zhao; B. N. Wan; X. Z. Gong; X. Gao

doi:10.1063/1.4770122

New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak

S. C. Liu, L. M. Shao, S. J. Zweben, G.S. Xu, H. Y. Guo, B. Cao, H. Q. Wang, L. Wang, Ning Yan, S. B. Xia, W. Zhang, R. Chen, L. Chen, S. Y. Ding, H. Xiong, Y. Zhao, B. N. Wan, X. Z. Gong, X. Gao

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Gas puff imaging (GPI) offers a direct and effective diagnostic to measure the edge turbulence structure and velocity in the edge plasma, which closely relates to edge transport and instability in tokamaks. A dual GPI diagnostic system has been installed on the low field side on experimental advanced superconducting tokamak (EAST). The two views are up-down symmetric about the midplane and separated by a toroidal angle of 66.6 degrees. A linear manifold with 16 holes apart by 10 mm is used to form helium gas cloud at the 130x130 mm (radial versus poloidal) objective plane. A fast camera is used to capture the light emission from the image plane with a speed up to 390 804 frames/s with 64x64 pixels and an exposure time of 2.156 mu s. The spatial resolution of the system is 2 mm at the objective plane. A total amount of 200 Pa.L helium gas is puffed into the plasma edge for each GPI viewing region for about 250 ms. The new GPI diagnostic has been applied on EAST for the first time during the recent experimental campaign under various plasma conditions, including ohmic, L-mode, and type-I, and type-III ELMy H-modes. Some of these initial experimental results are also presented. © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770122]

Original language	English
Journal	Review of Scientific Instruments
Volume	83
Issue number	12
Pages (from-to)	123506
Number of pages	7
ISSN	0034-6748
DOIs	https://doi.org/10.1063/1.4770122
Publication status	Published - 2012

Keywords

INSTRUMENTS
PHYSICS,
ALCATOR C-MOD
EDGE TURBULENCE
BOUNDARY PLASMA
OFF-LAYER
FLUCTUATIONS
SIMULATIONS
TRANSPORT
BEHAVIOR
CAMERA

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Liu, S. C., Shao, L. M., Zweben, S. J., Xu, G. S., Guo, H. Y., Cao, B., Wang, H. Q., Wang, L., Yan, N., Xia, S. B., Zhang, W., Chen, R., Chen, L., Ding, S. Y., Xiong, H., Zhao, Y., Wan, B. N., Gong, X. Z., & Gao, X. (2012). New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak. Review of Scientific Instruments, 83(12), 123506. https://doi.org/10.1063/1.4770122

@article{9464c5fab3f241379473ba4d32cfeca6,

title = "New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak",

abstract = "Gas puff imaging (GPI) offers a direct and effective diagnostic to measure the edge turbulence structure and velocity in the edge plasma, which closely relates to edge transport and instability in tokamaks. A dual GPI diagnostic system has been installed on the low field side on experimental advanced superconducting tokamak (EAST). The two views are up-down symmetric about the midplane and separated by a toroidal angle of 66.6 degrees. A linear manifold with 16 holes apart by 10 mm is used to form helium gas cloud at the 130x130 mm (radial versus poloidal) objective plane. A fast camera is used to capture the light emission from the image plane with a speed up to 390 804 frames/s with 64x64 pixels and an exposure time of 2.156 mu s. The spatial resolution of the system is 2 mm at the objective plane. A total amount of 200 Pa.L helium gas is puffed into the plasma edge for each GPI viewing region for about 250 ms. The new GPI diagnostic has been applied on EAST for the first time during the recent experimental campaign under various plasma conditions, including ohmic, L-mode, and type-I, and type-III ELMy H-modes. Some of these initial experimental results are also presented. {\textcopyright} 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770122]",

keywords = "INSTRUMENTS, PHYSICS,, ALCATOR C-MOD, EDGE TURBULENCE, BOUNDARY PLASMA, OFF-LAYER, FLUCTUATIONS, SIMULATIONS, TRANSPORT, BEHAVIOR, CAMERA",

author = "Liu, {S. C.} and Shao, {L. M.} and Zweben, {S. J.} and G.S. Xu and Guo, {H. Y.} and B. Cao and Wang, {H. Q.} and L. Wang and Ning Yan and Xia, {S. B.} and W. Zhang and R. Chen and L. Chen and Ding, {S. Y.} and H. Xiong and Y. Zhao and Wan, {B. N.} and Gong, {X. Z.} and X. Gao",

year = "2012",

doi = "10.1063/1.4770122",

language = "English",

volume = "83",

pages = "123506",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "12",

}

Liu, SC, Shao, LM, Zweben, SJ, Xu, GS, Guo, HY, Cao, B, Wang, HQ, Wang, L, Yan, N, Xia, SB, Zhang, W, Chen, R, Chen, L, Ding, SY, Xiong, H, Zhao, Y, Wan, BN, Gong, XZ & Gao, X 2012, 'New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak', Review of Scientific Instruments, vol. 83, no. 12, pp. 123506. https://doi.org/10.1063/1.4770122

TY - JOUR

T1 - New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak

AU - Liu, S. C.

AU - Shao, L. M.

AU - Zweben, S. J.

AU - Xu, G.S.

AU - Guo, H. Y.

AU - Cao, B.

AU - Wang, H. Q.

AU - Wang, L.

AU - Yan, Ning

AU - Xia, S. B.

AU - Zhang, W.

AU - Chen, R.

AU - Chen, L.

AU - Ding, S. Y.

AU - Xiong, H.

AU - Zhao, Y.

AU - Wan, B. N.

AU - Gong, X. Z.

AU - Gao, X.

PY - 2012

Y1 - 2012

N2 - Gas puff imaging (GPI) offers a direct and effective diagnostic to measure the edge turbulence structure and velocity in the edge plasma, which closely relates to edge transport and instability in tokamaks. A dual GPI diagnostic system has been installed on the low field side on experimental advanced superconducting tokamak (EAST). The two views are up-down symmetric about the midplane and separated by a toroidal angle of 66.6 degrees. A linear manifold with 16 holes apart by 10 mm is used to form helium gas cloud at the 130x130 mm (radial versus poloidal) objective plane. A fast camera is used to capture the light emission from the image plane with a speed up to 390 804 frames/s with 64x64 pixels and an exposure time of 2.156 mu s. The spatial resolution of the system is 2 mm at the objective plane. A total amount of 200 Pa.L helium gas is puffed into the plasma edge for each GPI viewing region for about 250 ms. The new GPI diagnostic has been applied on EAST for the first time during the recent experimental campaign under various plasma conditions, including ohmic, L-mode, and type-I, and type-III ELMy H-modes. Some of these initial experimental results are also presented. © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770122]

AB - Gas puff imaging (GPI) offers a direct and effective diagnostic to measure the edge turbulence structure and velocity in the edge plasma, which closely relates to edge transport and instability in tokamaks. A dual GPI diagnostic system has been installed on the low field side on experimental advanced superconducting tokamak (EAST). The two views are up-down symmetric about the midplane and separated by a toroidal angle of 66.6 degrees. A linear manifold with 16 holes apart by 10 mm is used to form helium gas cloud at the 130x130 mm (radial versus poloidal) objective plane. A fast camera is used to capture the light emission from the image plane with a speed up to 390 804 frames/s with 64x64 pixels and an exposure time of 2.156 mu s. The spatial resolution of the system is 2 mm at the objective plane. A total amount of 200 Pa.L helium gas is puffed into the plasma edge for each GPI viewing region for about 250 ms. The new GPI diagnostic has been applied on EAST for the first time during the recent experimental campaign under various plasma conditions, including ohmic, L-mode, and type-I, and type-III ELMy H-modes. Some of these initial experimental results are also presented. © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770122]

KW - INSTRUMENTS

KW - PHYSICS,

KW - ALCATOR C-MOD

KW - EDGE TURBULENCE

KW - BOUNDARY PLASMA

KW - OFF-LAYER

KW - FLUCTUATIONS

KW - SIMULATIONS

KW - TRANSPORT

KW - BEHAVIOR

KW - CAMERA

U2 - 10.1063/1.4770122

DO - 10.1063/1.4770122

M3 - Journal article

C2 - 23277986

SN - 0034-6748

VL - 83

SP - 123506

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 12

ER -

New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak

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Keywords

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