Design of ICRF antennas for TFTR

S. Raftopoulos; R. Scillia; P. Bonanos; J. Hosea; J. R. Wilson; W. Enoch

doi:10.1109/FUSION.1991.218939

Design of ICRF antennas for TFTR

S. Raftopoulos
, R. Scillia
, P. Bonanos
, J. Hosea
, J. R. Wilson
, W. Enoch

PPPL Engineering

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

1 Scopus citations

Abstract

Two 4 MW ICRF antennas have been designed for the Tokamak Fusion Test Reactor (TFTR). The antennas will be installed adjacent to the two existing antennas, bringing the maximum ICRF heating capacity to 12.5 MW. The design goals were as follows: Increase the loading to the plasma; reduce the tendency for arcing; and simplify the fabrication and assembly of the device. The design is an evolution of the Bay M ICRF antenna that has operated at 5 MW into the plasma. 2- 3 The antenna utilizes a center mounted spline drive mechanism for positioning the device with respect to the plasma edge and for resisting the forces generated during disruptions. The antenna consists of an RF cavity with slots at the front end (facing the plasma). The Faraday shields are unique for each launcher, thought they share common design elements. Both launchers use solid Inconel rods that are bent to a radius matching the plasma and tilted six degrees in order to be parallel with the combined PF and TF fields of the tokamak. The "Bay K" launcher uses a single row shield while the "Bay N" launcher incorporates a double row shield. Surrounding the edge of the RF box is a frame of graphite tiles that protect the Faraday shield from the plasma. Four RF feedthroughs deliver power to a pair of end fed, center grounded current straps. The RF cavity and current straps are cooled with water. The antennas are scheduled to be installed on TFTR in January of 1992.

Original language	English (US)
Title of host publication	Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	111-114
Number of pages	4
ISBN (Electronic)	0780301323
DOIs	https://doi.org/10.1109/FUSION.1991.218939
State	Published - 1991
Event	14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991 - San Diego, United States Duration: Sep 30 1991 → Oct 3 1991

Publication series

Name	Proceedings - Symposium on Fusion Engineering

Conference

Conference	14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991
Country/Territory	United States
City	San Diego
Period	9/30/91 → 10/3/91

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

Access to Document

10.1109/FUSION.1991.218939

Cite this

Raftopoulos, S., Scillia, R., Bonanos, P., Hosea, J., Wilson, J. R., & Enoch, W. (1991). Design of ICRF antennas for TFTR. In Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991 (pp. 111-114). Article 218939 (Proceedings - Symposium on Fusion Engineering). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/FUSION.1991.218939

@inproceedings{3d8f33e623f9473483d09206d4645c4b,

title = "Design of ICRF antennas for TFTR",

abstract = "Two 4 MW ICRF antennas have been designed for the Tokamak Fusion Test Reactor (TFTR). The antennas will be installed adjacent to the two existing antennas, bringing the maximum ICRF heating capacity to 12.5 MW. The design goals were as follows: Increase the loading to the plasma; reduce the tendency for arcing; and simplify the fabrication and assembly of the device. The design is an evolution of the Bay M ICRF antenna that has operated at 5 MW into the plasma. 2- 3 The antenna utilizes a center mounted spline drive mechanism for positioning the device with respect to the plasma edge and for resisting the forces generated during disruptions. The antenna consists of an RF cavity with slots at the front end (facing the plasma). The Faraday shields are unique for each launcher, thought they share common design elements. Both launchers use solid Inconel rods that are bent to a radius matching the plasma and tilted six degrees in order to be parallel with the combined PF and TF fields of the tokamak. The {"}Bay K{"} launcher uses a single row shield while the {"}Bay N{"} launcher incorporates a double row shield. Surrounding the edge of the RF box is a frame of graphite tiles that protect the Faraday shield from the plasma. Four RF feedthroughs deliver power to a pair of end fed, center grounded current straps. The RF cavity and current straps are cooled with water. The antennas are scheduled to be installed on TFTR in January of 1992.",

author = "S. Raftopoulos and R. Scillia and P. Bonanos and J. Hosea and Wilson, \{J. R.\} and W. Enoch",

note = "Publisher Copyright: {\textcopyright} 1991 IEEE.; 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991 ; Conference date: 30-09-1991 Through 03-10-1991",

year = "1991",

doi = "10.1109/FUSION.1991.218939",

language = "English (US)",

series = "Proceedings - Symposium on Fusion Engineering",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "111--114",

booktitle = "Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991",

address = "United States",

}

Raftopoulos, S, Scillia, R, Bonanos, P, Hosea, J, Wilson, JR & Enoch, W 1991, Design of ICRF antennas for TFTR. in Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991., 218939, Proceedings - Symposium on Fusion Engineering, Institute of Electrical and Electronics Engineers Inc., pp. 111-114, 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991, San Diego, United States, 9/30/91. https://doi.org/10.1109/FUSION.1991.218939

Design of ICRF antennas for TFTR. / Raftopoulos, S.; Scillia, R.; Bonanos, P. et al.
Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991. Institute of Electrical and Electronics Engineers Inc., 1991. p. 111-114 218939 (Proceedings - Symposium on Fusion Engineering).

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

TY - GEN

T1 - Design of ICRF antennas for TFTR

AU - Raftopoulos, S.

AU - Scillia, R.

AU - Bonanos, P.

AU - Hosea, J.

AU - Wilson, J. R.

AU - Enoch, W.

PY - 1991

Y1 - 1991

N2 - Two 4 MW ICRF antennas have been designed for the Tokamak Fusion Test Reactor (TFTR). The antennas will be installed adjacent to the two existing antennas, bringing the maximum ICRF heating capacity to 12.5 MW. The design goals were as follows: Increase the loading to the plasma; reduce the tendency for arcing; and simplify the fabrication and assembly of the device. The design is an evolution of the Bay M ICRF antenna that has operated at 5 MW into the plasma. 2- 3 The antenna utilizes a center mounted spline drive mechanism for positioning the device with respect to the plasma edge and for resisting the forces generated during disruptions. The antenna consists of an RF cavity with slots at the front end (facing the plasma). The Faraday shields are unique for each launcher, thought they share common design elements. Both launchers use solid Inconel rods that are bent to a radius matching the plasma and tilted six degrees in order to be parallel with the combined PF and TF fields of the tokamak. The "Bay K" launcher uses a single row shield while the "Bay N" launcher incorporates a double row shield. Surrounding the edge of the RF box is a frame of graphite tiles that protect the Faraday shield from the plasma. Four RF feedthroughs deliver power to a pair of end fed, center grounded current straps. The RF cavity and current straps are cooled with water. The antennas are scheduled to be installed on TFTR in January of 1992.

AB - Two 4 MW ICRF antennas have been designed for the Tokamak Fusion Test Reactor (TFTR). The antennas will be installed adjacent to the two existing antennas, bringing the maximum ICRF heating capacity to 12.5 MW. The design goals were as follows: Increase the loading to the plasma; reduce the tendency for arcing; and simplify the fabrication and assembly of the device. The design is an evolution of the Bay M ICRF antenna that has operated at 5 MW into the plasma. 2- 3 The antenna utilizes a center mounted spline drive mechanism for positioning the device with respect to the plasma edge and for resisting the forces generated during disruptions. The antenna consists of an RF cavity with slots at the front end (facing the plasma). The Faraday shields are unique for each launcher, thought they share common design elements. Both launchers use solid Inconel rods that are bent to a radius matching the plasma and tilted six degrees in order to be parallel with the combined PF and TF fields of the tokamak. The "Bay K" launcher uses a single row shield while the "Bay N" launcher incorporates a double row shield. Surrounding the edge of the RF box is a frame of graphite tiles that protect the Faraday shield from the plasma. Four RF feedthroughs deliver power to a pair of end fed, center grounded current straps. The RF cavity and current straps are cooled with water. The antennas are scheduled to be installed on TFTR in January of 1992.

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U2 - 10.1109/FUSION.1991.218939

DO - 10.1109/FUSION.1991.218939

M3 - Conference contribution

AN - SCOPUS:85067391789

T3 - Proceedings - Symposium on Fusion Engineering

SP - 111

EP - 114

BT - Proceedings - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 14th IEEE/NPSS Symposium Fusion Engineering, FUSION 1991

Y2 - 30 September 1991 through 3 October 1991

ER -

Design of ICRF antennas for TFTR

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