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Title: Multiple striated heat fluxes patterns on the EAST first wall generated by lower hybrid wave absorption in the scrape-off layer

Abstract

Multiple striated heat fluxes on the EAST first wall are observed with lower hybrid wave (LHW) heating on the EAST device. Our analysis indicates that the heat source for the striated heat flux is from LHW absorption in the scrape-off layer (SOL). Magnetic field line tracing from the front of the LHW antenna grills is in good agreement with the striated heat flux profile. In addition the relative intensity of the LHW absorption in the SOL is consistent with the measured striated heat flux. However, the heat flux at inner strike points and outer strike points significantly decreased when the ion cyclotron resonance frequency (ICRF) wave was switched off, while there was no change for the striated heat flux, suggests that the striated heat flux is independent on the injected power to the core plasma.

Authors:
 [1];  [2];  [2];  [3];  [2];  [2];  [4];  [5]
  1. Univ. of Tennessee, Knoxville, TN (United States); Chinese Academy of Sciences, Anhui (China)
  2. Chinese Academy of Sciences, Anhui (China)
  3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Univ. of Tennessee, Knoxville, TN (United States); Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Contributing Org.:
[National Magnetic Confinement Fusion Science Program of China No. 2015GB102000.]
OSTI Identifier:
1529325
Alternate Identifier(s):
OSTI ID: 1544460; OSTI ID: 1557572
Grant/Contract Number:  
[SC0016915]
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
[ Journal Volume: 26; Journal Issue: 7]; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Gan, Kaifu, Li, Miaohui, Gong, Xianzu, Maingi, Rajesh, Zhang, Bin, Chen, Meiwen, Gray, Travis K., and Wirth, Brian D. Multiple striated heat fluxes patterns on the EAST first wall generated by lower hybrid wave absorption in the scrape-off layer. United States: N. p., 2019. Web. doi:10.1063/1.5088156.
Gan, Kaifu, Li, Miaohui, Gong, Xianzu, Maingi, Rajesh, Zhang, Bin, Chen, Meiwen, Gray, Travis K., & Wirth, Brian D. Multiple striated heat fluxes patterns on the EAST first wall generated by lower hybrid wave absorption in the scrape-off layer. United States. doi:10.1063/1.5088156.
Gan, Kaifu, Li, Miaohui, Gong, Xianzu, Maingi, Rajesh, Zhang, Bin, Chen, Meiwen, Gray, Travis K., and Wirth, Brian D. Tue . "Multiple striated heat fluxes patterns on the EAST first wall generated by lower hybrid wave absorption in the scrape-off layer". United States. doi:10.1063/1.5088156.
@article{osti_1529325,
title = {Multiple striated heat fluxes patterns on the EAST first wall generated by lower hybrid wave absorption in the scrape-off layer},
author = {Gan, Kaifu and Li, Miaohui and Gong, Xianzu and Maingi, Rajesh and Zhang, Bin and Chen, Meiwen and Gray, Travis K. and Wirth, Brian D.},
abstractNote = {Multiple striated heat fluxes on the EAST first wall are observed with lower hybrid wave (LHW) heating on the EAST device. Our analysis indicates that the heat source for the striated heat flux is from LHW absorption in the scrape-off layer (SOL). Magnetic field line tracing from the front of the LHW antenna grills is in good agreement with the striated heat flux profile. In addition the relative intensity of the LHW absorption in the SOL is consistent with the measured striated heat flux. However, the heat flux at inner strike points and outer strike points significantly decreased when the ion cyclotron resonance frequency (ICRF) wave was switched off, while there was no change for the striated heat flux, suggests that the striated heat flux is independent on the injected power to the core plasma.},
doi = {10.1063/1.5088156},
journal = {Physics of Plasmas},
number = [7],
volume = [26],
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
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This content will become publicly available on July 23, 2020
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Works referenced in this record:

Lower hybrid wave edge power loss quantification on the Alcator C-Mod tokamak
journal, May 2016

  • Faust, I. C.; Brunner, D.; LaBombard, B.
  • Physics of Plasmas, Vol. 23, Issue 5
  • DOI: 10.1063/1.4951736

Bright spots generated by lower hybrid waves on JET
journal, June 2005

  • Rantamäki, K. M.; Petržílka, V.; Andrew, P.
  • Plasma Physics and Controlled Fusion, Vol. 47, Issue 7
  • DOI: 10.1088/0741-3335/47/7/009

LH Power Losses In Front of the JET Launcher
conference, January 2009

  • Jacquet, P.; Arnoux, G.; Colas, L.
  • RADIO FREQUENCY POWER IN PLASMAS: Proceedings of the 18th Topical Conference, AIP Conference Proceedings
  • DOI: 10.1063/1.3273776

Divertor heat flux mitigation by using supersonic molecular beam injection in the HL-2A tokamak
journal, August 2017


Heat loads on JET plasma facing components from ICRF and LH wave absorption in the SOL
journal, August 2011


Enhanced heat flux in the scrape-off layer due to electrons accelerated in the near field of lower hybrid grills
journal, June 1998


Comparison between gas puffing and supersonic molecular beam injection in plasma density feedback experiments in EAST
journal, October 2013


Hot spots generated by low hybrid wave absorption in the SOL on the EAST tokamak
journal, July 2013


Study of Divertor Heat Patterns Induced by LHCD L-Mode Plasmas Using an Infra-Red Camera System on EAST
journal, October 2015


A long-pulse high-confinement plasma regime in the Experimental Advanced Superconducting Tokamak
journal, November 2013

  • Li, J.; Guo, H. Y.; Wan, B. N.
  • Nature Physics, Vol. 9, Issue 12
  • DOI: 10.1038/nphys2795

Strong toroidal asymmetries in power deposition on divertor and first wall components during LHCD on TdeV and Tore Supra
journal, February 1997


Magnetic Topology Changes Induced by Lower Hybrid Waves and their Profound Effect on Edge-Localized Modes in the EAST Tokamak
journal, June 2013