Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D

R. I. Pinsker; M. E. Austin; S. J. Diem; E. J. Doyle; B. A. Grierson; J. C. Hosea; G. L. Jackson; M. C. Kaufman; T. C. Luce; R. Maggiora; D. Milanesio; A. Nagy; R. Perkins; P. A. Politzer; M. Porkolab; P. M. Ryan; W. M. Solomon; G. Taylor; F. Turco; L. Zeng

doi:10.1063/1.4864518

Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D

R. I. Pinsker, M. E. Austin, S. J. Diem, E. J. Doyle, B. A. Grierson, J. C. Hosea, G. L. Jackson, M. C. Kaufman, T. C. Luce, R. Maggiora, D. Milanesio, A. Nagy, R. Perkins, P. A. Politzer, M. Porkolab, P. M. Ryan, W. M. Solomon, G. Taylor, F. Turco, L. Zeng

Fusion Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

Fast Wave (FW) heating and electron cyclotron heating (ECH) are used in the DIII-D tokamak to study plasmas with low applied torque and dominant electron heating characteristic of burning plasmas. FW heating via direct electron damping has reached the 2.5 MW level in high performance ELMy H-mode plasmas. In Advanced Inductive (AI) plasmas, core FW heating was found to be comparable to that of ECH, consistent with the excellent first-pass absorption of FWs predicted by ray-tracing models at high electron beta. FW heating at the ∼2 MW level to ELMy H-mode discharges in the ITER Baseline Scenario (IBS) showed unexpectedly strong absorption of FW power by injected neutral beam (NB) ions, indicated by significant enhancement of the D-D neutron rate, while the intended absorption on core electrons appeared rather weak. The AI and IBS discharges are compared in an effort to identify the causes of the different response to FWs.

Original language	English
Title of host publication	Radiofrequency Power in Plasmas - Proceedings of the 20th Topical Conference
Publisher	American Institute of Physics Inc.
Pages	183-186
Number of pages	4
ISBN (Print)	9780735412101
DOIs	https://doi.org/10.1063/1.4864518
State	Published - 2014
Event	20th Topical Conference on Radiofrequency Power in Plasmas - Sorrento, Italy Duration: Jun 25 2013 → Jun 28 2013

Publication series

Name	AIP Conference Proceedings
Volume	1580
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	20th Topical Conference on Radiofrequency Power in Plasmas
Country/Territory	Italy
City	Sorrento
Period	06/25/13 → 06/28/13

Keywords

Ion cyclotron heating
electron damping
high harmonics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/1.4864518

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Pinsker, R. I., Austin, M. E., Diem, S. J., Doyle, E. J., Grierson, B. A., Hosea, J. C., Jackson, G. L., Kaufman, M. C., Luce, T. C., Maggiora, R., Milanesio, D., Nagy, A., Perkins, R., Politzer, P. A., Porkolab, M., Ryan, P. M., Solomon, W. M., Taylor, G., Turco, F., & Zeng, L. (2014). Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D. In Radiofrequency Power in Plasmas - Proceedings of the 20th Topical Conference (pp. 183-186). (AIP Conference Proceedings; Vol. 1580). American Institute of Physics Inc.. https://doi.org/10.1063/1.4864518

@inproceedings{e1ea322935434074bfb9d0af31880bb3,

title = "Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D",

abstract = "Fast Wave (FW) heating and electron cyclotron heating (ECH) are used in the DIII-D tokamak to study plasmas with low applied torque and dominant electron heating characteristic of burning plasmas. FW heating via direct electron damping has reached the 2.5 MW level in high performance ELMy H-mode plasmas. In Advanced Inductive (AI) plasmas, core FW heating was found to be comparable to that of ECH, consistent with the excellent first-pass absorption of FWs predicted by ray-tracing models at high electron beta. FW heating at the ∼2 MW level to ELMy H-mode discharges in the ITER Baseline Scenario (IBS) showed unexpectedly strong absorption of FW power by injected neutral beam (NB) ions, indicated by significant enhancement of the D-D neutron rate, while the intended absorption on core electrons appeared rather weak. The AI and IBS discharges are compared in an effort to identify the causes of the different response to FWs.",

keywords = "Ion cyclotron heating, electron damping, high harmonics",

author = "Pinsker, {R. I.} and Austin, {M. E.} and Diem, {S. J.} and Doyle, {E. J.} and Grierson, {B. A.} and Hosea, {J. C.} and Jackson, {G. L.} and Kaufman, {M. C.} and Luce, {T. C.} and R. Maggiora and D. Milanesio and A. Nagy and R. Perkins and Politzer, {P. A.} and M. Porkolab and Ryan, {P. M.} and Solomon, {W. M.} and G. Taylor and F. Turco and L. Zeng",

year = "2014",

doi = "10.1063/1.4864518",

language = "English",

isbn = "9780735412101",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

pages = "183--186",

booktitle = "Radiofrequency Power in Plasmas - Proceedings of the 20th Topical Conference",

note = "20th Topical Conference on Radiofrequency Power in Plasmas ; Conference date: 25-06-2013 Through 28-06-2013",

}

Pinsker, RI, Austin, ME, Diem, SJ, Doyle, EJ, Grierson, BA, Hosea, JC, Jackson, GL, Kaufman, MC, Luce, TC, Maggiora, R, Milanesio, D, Nagy, A, Perkins, R, Politzer, PA, Porkolab, M, Ryan, PM, Solomon, WM, Taylor, G, Turco, F & Zeng, L 2014, Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D. in Radiofrequency Power in Plasmas - Proceedings of the 20th Topical Conference. AIP Conference Proceedings, vol. 1580, American Institute of Physics Inc., pp. 183-186, 20th Topical Conference on Radiofrequency Power in Plasmas, Sorrento, Italy, 06/25/13. https://doi.org/10.1063/1.4864518

Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D. / Pinsker, R. I.; Austin, M. E.; Diem, S. J. et al.
Radiofrequency Power in Plasmas - Proceedings of the 20th Topical Conference. American Institute of Physics Inc., 2014. p. 183-186 (AIP Conference Proceedings; Vol. 1580).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D

AU - Pinsker, R. I.

AU - Austin, M. E.

AU - Diem, S. J.

AU - Doyle, E. J.

AU - Grierson, B. A.

AU - Hosea, J. C.

AU - Jackson, G. L.

AU - Kaufman, M. C.

AU - Luce, T. C.

AU - Maggiora, R.

AU - Milanesio, D.

AU - Nagy, A.

AU - Perkins, R.

AU - Politzer, P. A.

AU - Porkolab, M.

AU - Ryan, P. M.

AU - Solomon, W. M.

AU - Taylor, G.

AU - Turco, F.

AU - Zeng, L.

PY - 2014

Y1 - 2014

N2 - Fast Wave (FW) heating and electron cyclotron heating (ECH) are used in the DIII-D tokamak to study plasmas with low applied torque and dominant electron heating characteristic of burning plasmas. FW heating via direct electron damping has reached the 2.5 MW level in high performance ELMy H-mode plasmas. In Advanced Inductive (AI) plasmas, core FW heating was found to be comparable to that of ECH, consistent with the excellent first-pass absorption of FWs predicted by ray-tracing models at high electron beta. FW heating at the ∼2 MW level to ELMy H-mode discharges in the ITER Baseline Scenario (IBS) showed unexpectedly strong absorption of FW power by injected neutral beam (NB) ions, indicated by significant enhancement of the D-D neutron rate, while the intended absorption on core electrons appeared rather weak. The AI and IBS discharges are compared in an effort to identify the causes of the different response to FWs.

AB - Fast Wave (FW) heating and electron cyclotron heating (ECH) are used in the DIII-D tokamak to study plasmas with low applied torque and dominant electron heating characteristic of burning plasmas. FW heating via direct electron damping has reached the 2.5 MW level in high performance ELMy H-mode plasmas. In Advanced Inductive (AI) plasmas, core FW heating was found to be comparable to that of ECH, consistent with the excellent first-pass absorption of FWs predicted by ray-tracing models at high electron beta. FW heating at the ∼2 MW level to ELMy H-mode discharges in the ITER Baseline Scenario (IBS) showed unexpectedly strong absorption of FW power by injected neutral beam (NB) ions, indicated by significant enhancement of the D-D neutron rate, while the intended absorption on core electrons appeared rather weak. The AI and IBS discharges are compared in an effort to identify the causes of the different response to FWs.

KW - Ion cyclotron heating

KW - electron damping

KW - high harmonics

UR - http://www.scopus.com/inward/record.url?scp=84906347679&partnerID=8YFLogxK

U2 - 10.1063/1.4864518

DO - 10.1063/1.4864518

M3 - Conference contribution

AN - SCOPUS:84906347679

SN - 9780735412101

T3 - AIP Conference Proceedings

SP - 183

EP - 186

BT - Radiofrequency Power in Plasmas - Proceedings of the 20th Topical Conference

PB - American Institute of Physics Inc.

T2 - 20th Topical Conference on Radiofrequency Power in Plasmas

Y2 - 25 June 2013 through 28 June 2013

ER -

Fast wave direct electron heating in advanced inductive and ITER baseline scenario discharges in DIII-D

Abstract

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Keywords

UN SDGs

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