Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod

C. Lau; G. Hanson; Y. Lin; O. Meneghini; S. Wukitch; B. Labombard; R. Parker; S. Shiraiwa; G. Wallace; J. Wilgen

doi:10.1063/1.3664966

Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod

C. Lau, G. Hanson, Y. Lin, O. Meneghini, S. Wukitch, B. Labombard, R. Parker, S. Shiraiwa, G. Wallace, J. Wilgen

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

2 Scopus citations

Abstract

A swept-frequency X-mode reflectometer has being installed on Alcator C-Mod to measure the SOL density profiles at three poloidal locations adjacent to the new Lower Hybrid Launcher. First results on density profile modifications at the LH launcher due to ICRH or LHCD non-linear effects will be presented. Experimental measurements indicate that the application of LH power creates a density depletion near the LH launcher, which is consistent with the influence of a ponderomotive force. At high n̄ _e, LH power increases the density in the far SOL. Application of low ICRF power decreases the density in front of the LH launcher, which may be consistent with ICRF sheath induced convective cells. Preliminary results, however, indicate that field line mapping and increasing ICRF power do not modify the density profile significantly.

Original language	English
Title of host publication	Radio Frequency Power in Plasmas - Proceedings of the 19th Topical Conference
Pages	227-230
Number of pages	4
DOIs	https://doi.org/10.1063/1.3664966
State	Published - 2011
Externally published	Yes
Event	19th Topical Conference on Radio Frequency Power in Plasmas - Newport, RI, United States Duration: Jun 1 2011 → Jul 3 2011

Publication series

Name	AIP Conference Proceedings
Volume	1406
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	19th Topical Conference on Radio Frequency Power in Plasmas
Country/Territory	United States
City	Newport, RI
Period	06/1/11 → 07/3/11

Keywords

ICRF
LH
Scrape-off-layer
density profiles
reflectometer

UN SDGs

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

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10.1063/1.3664966

Cite this

Lau, C., Hanson, G., Lin, Y., Meneghini, O., Wukitch, S., Labombard, B., Parker, R., Shiraiwa, S., Wallace, G., & Wilgen, J. (2011). Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod. In Radio Frequency Power in Plasmas - Proceedings of the 19th Topical Conference (pp. 227-230). (AIP Conference Proceedings; Vol. 1406). https://doi.org/10.1063/1.3664966

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title = "Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod",

abstract = "A swept-frequency X-mode reflectometer has being installed on Alcator C-Mod to measure the SOL density profiles at three poloidal locations adjacent to the new Lower Hybrid Launcher. First results on density profile modifications at the LH launcher due to ICRH or LHCD non-linear effects will be presented. Experimental measurements indicate that the application of LH power creates a density depletion near the LH launcher, which is consistent with the influence of a ponderomotive force. At high {\=n} e, LH power increases the density in the far SOL. Application of low ICRF power decreases the density in front of the LH launcher, which may be consistent with ICRF sheath induced convective cells. Preliminary results, however, indicate that field line mapping and increasing ICRF power do not modify the density profile significantly.",

keywords = "ICRF, LH, Scrape-off-layer, density profiles, reflectometer",

author = "C. Lau and G. Hanson and Y. Lin and O. Meneghini and S. Wukitch and B. Labombard and R. Parker and S. Shiraiwa and G. Wallace and J. Wilgen",

year = "2011",

doi = "10.1063/1.3664966",

language = "English",

isbn = "9780735409781",

series = "AIP Conference Proceedings",

pages = "227--230",

booktitle = "Radio Frequency Power in Plasmas - Proceedings of the 19th Topical Conference",

note = "19th Topical Conference on Radio Frequency Power in Plasmas ; Conference date: 01-06-2011 Through 03-07-2011",

}

Lau, C, Hanson, G, Lin, Y, Meneghini, O, Wukitch, S, Labombard, B, Parker, R, Shiraiwa, S, Wallace, G & Wilgen, J 2011, Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod. in Radio Frequency Power in Plasmas - Proceedings of the 19th Topical Conference. AIP Conference Proceedings, vol. 1406, pp. 227-230, 19th Topical Conference on Radio Frequency Power in Plasmas, Newport, RI, United States, 06/1/11. https://doi.org/10.1063/1.3664966

TY - GEN

T1 - Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod

AU - Lau, C.

AU - Hanson, G.

AU - Lin, Y.

AU - Meneghini, O.

AU - Wukitch, S.

AU - Labombard, B.

AU - Parker, R.

AU - Shiraiwa, S.

AU - Wallace, G.

AU - Wilgen, J.

PY - 2011

Y1 - 2011

N2 - A swept-frequency X-mode reflectometer has being installed on Alcator C-Mod to measure the SOL density profiles at three poloidal locations adjacent to the new Lower Hybrid Launcher. First results on density profile modifications at the LH launcher due to ICRH or LHCD non-linear effects will be presented. Experimental measurements indicate that the application of LH power creates a density depletion near the LH launcher, which is consistent with the influence of a ponderomotive force. At high n̄ e, LH power increases the density in the far SOL. Application of low ICRF power decreases the density in front of the LH launcher, which may be consistent with ICRF sheath induced convective cells. Preliminary results, however, indicate that field line mapping and increasing ICRF power do not modify the density profile significantly.

AB - A swept-frequency X-mode reflectometer has being installed on Alcator C-Mod to measure the SOL density profiles at three poloidal locations adjacent to the new Lower Hybrid Launcher. First results on density profile modifications at the LH launcher due to ICRH or LHCD non-linear effects will be presented. Experimental measurements indicate that the application of LH power creates a density depletion near the LH launcher, which is consistent with the influence of a ponderomotive force. At high n̄ e, LH power increases the density in the far SOL. Application of low ICRF power decreases the density in front of the LH launcher, which may be consistent with ICRF sheath induced convective cells. Preliminary results, however, indicate that field line mapping and increasing ICRF power do not modify the density profile significantly.

KW - ICRF

KW - LH

KW - Scrape-off-layer

KW - density profiles

KW - reflectometer

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SN - 9780735409781

T3 - AIP Conference Proceedings

SP - 227

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BT - Radio Frequency Power in Plasmas - Proceedings of the 19th Topical Conference

T2 - 19th Topical Conference on Radio Frequency Power in Plasmas

Y2 - 1 June 2011 through 3 July 2011

ER -

Effects of ICRF and LHCD on SOL density profiles on Alcator C-Mod

Abstract

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Conference

Keywords

UN SDGs

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