High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX

R. J. Perkins; J. C. Hosea; G. J. Kramer; J. W. Ahn; R. E. Bell; A. Diallo; S. Gerhardt; T. K. Gray; D. L. Green; E. F. Jaeger; M. A. Jaworski; B. P. Leblanc; A. McLean; R. Maingi; C. K. Phillips; L. Roquemore; P. M. Ryan; S. Sabbagh; G. Taylor; J. R. Wilson

doi:10.1103/PhysRevLett.109.045001

High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX

R. J. Perkins, J. C. Hosea, G. J. Kramer, J. W. Ahn, R. E. Bell, A. Diallo, S. Gerhardt, T. K. Gray, D. L. Green, E. F. Jaeger, M. A. Jaworski, B. P. Leblanc, A. McLean, R. Maingi, C. K. Phillips, L. Roquemore, P. M. Ryan, S. Sabbagh, G. Taylor, J. R. Wilson

Power Exhaust and Particle Control

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

A significant fraction of high-harmonic fast-wave (HHFW) power applied to NSTX can be lost to the scrape-off layer (SOL) and deposited in bright and hot spirals on the divertor rather than in the core plasma. We show that the HHFW power flows to these spirals along magnetic field lines passing through the SOL in front of the antenna, implying that the HHFW power couples across the entire width of the SOL rather than mostly at the antenna face. This result will help guide future efforts to understand and minimize these edge losses in order to maximize fast-wave heating and current drive.

Original language	English
Article number	045001
Journal	Physical Review Letters
Volume	109
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.109.045001
State	Published - Jul 27 2012

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Perkins, R. J., Hosea, J. C., Kramer, G. J., Ahn, J. W., Bell, R. E., Diallo, A., Gerhardt, S., Gray, T. K., Green, D. L., Jaeger, E. F., Jaworski, M. A., Leblanc, B. P., McLean, A., Maingi, R., Phillips, C. K., Roquemore, L., Ryan, P. M., Sabbagh, S., Taylor, G., & Wilson, J. R. (2012). High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX. Physical Review Letters, 109(4), Article 045001. https://doi.org/10.1103/PhysRevLett.109.045001

@article{80afebb83670499fabfcfc13edc18901,

title = "High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX",

abstract = "A significant fraction of high-harmonic fast-wave (HHFW) power applied to NSTX can be lost to the scrape-off layer (SOL) and deposited in bright and hot spirals on the divertor rather than in the core plasma. We show that the HHFW power flows to these spirals along magnetic field lines passing through the SOL in front of the antenna, implying that the HHFW power couples across the entire width of the SOL rather than mostly at the antenna face. This result will help guide future efforts to understand and minimize these edge losses in order to maximize fast-wave heating and current drive.",

author = "Perkins, {R. J.} and Hosea, {J. C.} and Kramer, {G. J.} and Ahn, {J. W.} and Bell, {R. E.} and A. Diallo and S. Gerhardt and Gray, {T. K.} and Green, {D. L.} and Jaeger, {E. F.} and Jaworski, {M. A.} and Leblanc, {B. P.} and A. McLean and R. Maingi and Phillips, {C. K.} and L. Roquemore and Ryan, {P. M.} and S. Sabbagh and G. Taylor and Wilson, {J. R.}",

year = "2012",

month = jul,

day = "27",

doi = "10.1103/PhysRevLett.109.045001",

language = "English",

volume = "109",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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Perkins, RJ, Hosea, JC, Kramer, GJ, Ahn, JW, Bell, RE, Diallo, A, Gerhardt, S, Gray, TK, Green, DL, Jaeger, EF, Jaworski, MA, Leblanc, BP, McLean, A, Maingi, R, Phillips, CK, Roquemore, L, Ryan, PM, Sabbagh, S, Taylor, G & Wilson, JR 2012, 'High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX', Physical Review Letters, vol. 109, no. 4, 045001. https://doi.org/10.1103/PhysRevLett.109.045001

TY - JOUR

T1 - High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX

AU - Perkins, R. J.

AU - Hosea, J. C.

AU - Kramer, G. J.

AU - Ahn, J. W.

AU - Bell, R. E.

AU - Diallo, A.

AU - Gerhardt, S.

AU - Gray, T. K.

AU - Green, D. L.

AU - Jaeger, E. F.

AU - Jaworski, M. A.

AU - Leblanc, B. P.

AU - McLean, A.

AU - Maingi, R.

AU - Phillips, C. K.

AU - Roquemore, L.

AU - Ryan, P. M.

AU - Sabbagh, S.

AU - Taylor, G.

AU - Wilson, J. R.

PY - 2012/7/27

Y1 - 2012/7/27

N2 - A significant fraction of high-harmonic fast-wave (HHFW) power applied to NSTX can be lost to the scrape-off layer (SOL) and deposited in bright and hot spirals on the divertor rather than in the core plasma. We show that the HHFW power flows to these spirals along magnetic field lines passing through the SOL in front of the antenna, implying that the HHFW power couples across the entire width of the SOL rather than mostly at the antenna face. This result will help guide future efforts to understand and minimize these edge losses in order to maximize fast-wave heating and current drive.

AB - A significant fraction of high-harmonic fast-wave (HHFW) power applied to NSTX can be lost to the scrape-off layer (SOL) and deposited in bright and hot spirals on the divertor rather than in the core plasma. We show that the HHFW power flows to these spirals along magnetic field lines passing through the SOL in front of the antenna, implying that the HHFW power couples across the entire width of the SOL rather than mostly at the antenna face. This result will help guide future efforts to understand and minimize these edge losses in order to maximize fast-wave heating and current drive.

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DO - 10.1103/PhysRevLett.109.045001

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VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 045001

ER -

High-harmonic fast-wave power flow along magnetic field lines in the scrape-off layer of NSTX

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