Lower hybrid antenna design for MST

J. A. Goetz; M. A. Thomas; M. C. Kaufman; S. P. Oliva

doi:10.1063/1.2098249

Lower hybrid antenna design for MST

J. A. Goetz, M. A. Thomas, M. C. Kaufman, S. P. Oliva

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

Abstract

Inter-digital line antennas are being used to test the feasibility of lower hybrid current drive in MST. The antennas use λ/4 resonators and launch slow waves at 800 MHz with n _∥ ∼ 7.5. Routine operation has been achieved with a good impedance match between antenna and plasma. High power antenna design improvements include larger vacuum feed-throughs, better impedance matching, and rf instrumentation on all resonators. The antenna and feed-through modeling was performed with CST Microwave Studio™. The pulse-forming network that powers the klystron is being upgraded to a 50 kV - 30 ms pulse. The goal for the LHCD system on MST is a modular design that can handle 300 kW per antenna.

Original language	English
Title of host publication	RADIO FREQUENCY POWER IN PLASMAS
Subtitle of host publication	16th Topical Conference on Radio Frequency Power in Plasmas
Pages	323-326
Number of pages	4
DOIs	https://doi.org/10.1063/1.2098249
State	Published - Sep 26 2005
Externally published	Yes
Event	RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas - Park City, UT, United States Duration: Apr 11 2005 → Apr 13 2005

Publication series

Name	AIP Conference Proceedings
Volume	787
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas
Country/Territory	United States
City	Park City, UT
Period	04/11/05 → 04/13/05

Keywords

Antennas
Current drive
Lower hybrid waves
Reversed field pinch

Access to Document

10.1063/1.2098249

Cite this

@inproceedings{e3066cda728e4ebe9a8bd28e210093ad,

title = "Lower hybrid antenna design for MST",

abstract = "Inter-digital line antennas are being used to test the feasibility of lower hybrid current drive in MST. The antennas use λ/4 resonators and launch slow waves at 800 MHz with n ∥ ∼ 7.5. Routine operation has been achieved with a good impedance match between antenna and plasma. High power antenna design improvements include larger vacuum feed-throughs, better impedance matching, and rf instrumentation on all resonators. The antenna and feed-through modeling was performed with CST Microwave Studio{\texttrademark}. The pulse-forming network that powers the klystron is being upgraded to a 50 kV - 30 ms pulse. The goal for the LHCD system on MST is a modular design that can handle 300 kW per antenna.",

keywords = "Antennas, Current drive, Lower hybrid waves, Reversed field pinch",

author = "Goetz, {J. A.} and Thomas, {M. A.} and Kaufman, {M. C.} and Oliva, {S. P.}",

year = "2005",

month = sep,

day = "26",

doi = "10.1063/1.2098249",

language = "English",

isbn = "0735402760",

series = "AIP Conference Proceedings",

pages = "323--326",

booktitle = "RADIO FREQUENCY POWER IN PLASMAS",

note = "RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas ; Conference date: 11-04-2005 Through 13-04-2005",

}

Goetz, JA, Thomas, MA, Kaufman, MC & Oliva, SP 2005, Lower hybrid antenna design for MST. in RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas. AIP Conference Proceedings, vol. 787, pp. 323-326, RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas, Park City, UT, United States, 04/11/05. https://doi.org/10.1063/1.2098249

TY - GEN

T1 - Lower hybrid antenna design for MST

AU - Goetz, J. A.

AU - Thomas, M. A.

AU - Kaufman, M. C.

AU - Oliva, S. P.

PY - 2005/9/26

Y1 - 2005/9/26

N2 - Inter-digital line antennas are being used to test the feasibility of lower hybrid current drive in MST. The antennas use λ/4 resonators and launch slow waves at 800 MHz with n ∥ ∼ 7.5. Routine operation has been achieved with a good impedance match between antenna and plasma. High power antenna design improvements include larger vacuum feed-throughs, better impedance matching, and rf instrumentation on all resonators. The antenna and feed-through modeling was performed with CST Microwave Studio™. The pulse-forming network that powers the klystron is being upgraded to a 50 kV - 30 ms pulse. The goal for the LHCD system on MST is a modular design that can handle 300 kW per antenna.

AB - Inter-digital line antennas are being used to test the feasibility of lower hybrid current drive in MST. The antennas use λ/4 resonators and launch slow waves at 800 MHz with n ∥ ∼ 7.5. Routine operation has been achieved with a good impedance match between antenna and plasma. High power antenna design improvements include larger vacuum feed-throughs, better impedance matching, and rf instrumentation on all resonators. The antenna and feed-through modeling was performed with CST Microwave Studio™. The pulse-forming network that powers the klystron is being upgraded to a 50 kV - 30 ms pulse. The goal for the LHCD system on MST is a modular design that can handle 300 kW per antenna.

KW - Antennas

KW - Current drive

KW - Lower hybrid waves

KW - Reversed field pinch

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U2 - 10.1063/1.2098249

DO - 10.1063/1.2098249

M3 - Conference contribution

AN - SCOPUS:33749655924

SN - 0735402760

SN - 9780735402768

T3 - AIP Conference Proceedings

SP - 323

EP - 326

BT - RADIO FREQUENCY POWER IN PLASMAS

T2 - RADIO FREQUENCY POWER IN PLASMAS: 16th Topical Conference on Radio Frequency Power in Plasmas

Y2 - 11 April 2005 through 13 April 2005

ER -

Lower hybrid antenna design for MST

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Keywords

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