Two frequency ICRF heating of D-T plasmas on TFTR

J. H. Rogers; R. Majeski; J. R. Wilson; J. C. Hosea; G. Schilling; J. Stevens; Y. L. Ho; S. Raman; D. A. Rasmussen

Two frequency ICRF heating of D-T plasmas on TFTR

J. H. Rogers, R. Majeski, J. R. Wilson, J. C. Hosea, G. Schilling, J. Stevens, Y. L. Ho, S. Raman, D. A. Rasmussen

PPPL Tokamak Expermntl Science

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

1 Scopus citations

Abstract

Modifications have been made to allow two of the ICRF antennas (bays L and M) on TFTR to operate at either of two frequencies, 43 MHz or 64 MHz. This was accomplished by lengthening the resonant loops feeding the antennas (2λ at 43 MHz, 3λ at 64 MHz) and replacing the conventional quarter wave impedance transformers with a tapered impedance design. The other two antennas (bays K and N) will operate at a fixed frequency, 43 MHz. The two frequency operation allows a combination of ³He-minority (or T second harmonic) and H-minority heating at full toroidal field on TFTR. Multiple frequency operation may also be useful in direct electron heating and current drive experiments. Other modifications have been made which are expected to permit arbitrary phasing between the current straps on bays M and L. The system design of the antenna, resonant loops and impedance matching system as well as preliminary TFTR results are discussed.

Original language	English (US)
Title of host publication	Proceedings - Symposium on Fusion Engineering
Publisher	Publ by IEEE
Pages	621-624
Number of pages	4
ISBN (Print)	0780314131
State	Published - 1993
Event	Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2) - Hyannis, MA, USA Duration: Oct 12 1993 → Oct 12 1993

Publication series

Name	Proceedings - Symposium on Fusion Engineering
Volume	2

Other

Other	Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2)
City	Hyannis, MA, USA
Period	10/12/93 → 10/12/93

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

Cite this

@inproceedings{ee019be0c4af45f681e35be97549fb47,

title = "Two frequency ICRF heating of D-T plasmas on TFTR",

abstract = "Modifications have been made to allow two of the ICRF antennas (bays L and M) on TFTR to operate at either of two frequencies, 43 MHz or 64 MHz. This was accomplished by lengthening the resonant loops feeding the antennas (2λ at 43 MHz, 3λ at 64 MHz) and replacing the conventional quarter wave impedance transformers with a tapered impedance design. The other two antennas (bays K and N) will operate at a fixed frequency, 43 MHz. The two frequency operation allows a combination of 3He-minority (or T second harmonic) and H-minority heating at full toroidal field on TFTR. Multiple frequency operation may also be useful in direct electron heating and current drive experiments. Other modifications have been made which are expected to permit arbitrary phasing between the current straps on bays M and L. The system design of the antenna, resonant loops and impedance matching system as well as preliminary TFTR results are discussed.",

author = "Rogers, \{J. H.\} and R. Majeski and Wilson, \{J. R.\} and Hosea, \{J. C.\} and G. Schilling and J. Stevens and Ho, \{Y. L.\} and S. Raman and Rasmussen, \{D. A.\}",

year = "1993",

language = "English (US)",

isbn = "0780314131",

series = "Proceedings - Symposium on Fusion Engineering",

publisher = "Publ by IEEE",

pages = "621--624",

booktitle = "Proceedings - Symposium on Fusion Engineering",

note = "Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2) ; Conference date: 12-10-1993 Through 12-10-1993",

}

Rogers, JH, Majeski, R, Wilson, JR, Hosea, JC, Schilling, G, Stevens, J, Ho, YL, Raman, S & Rasmussen, DA 1993, Two frequency ICRF heating of D-T plasmas on TFTR. in Proceedings - Symposium on Fusion Engineering. Proceedings - Symposium on Fusion Engineering, vol. 2, Publ by IEEE, pp. 621-624, Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2), Hyannis, MA, USA, 10/12/93.

TY - GEN

T1 - Two frequency ICRF heating of D-T plasmas on TFTR

AU - Rogers, J. H.

AU - Majeski, R.

AU - Wilson, J. R.

AU - Hosea, J. C.

AU - Schilling, G.

AU - Stevens, J.

AU - Ho, Y. L.

AU - Raman, S.

AU - Rasmussen, D. A.

PY - 1993

Y1 - 1993

N2 - Modifications have been made to allow two of the ICRF antennas (bays L and M) on TFTR to operate at either of two frequencies, 43 MHz or 64 MHz. This was accomplished by lengthening the resonant loops feeding the antennas (2λ at 43 MHz, 3λ at 64 MHz) and replacing the conventional quarter wave impedance transformers with a tapered impedance design. The other two antennas (bays K and N) will operate at a fixed frequency, 43 MHz. The two frequency operation allows a combination of 3He-minority (or T second harmonic) and H-minority heating at full toroidal field on TFTR. Multiple frequency operation may also be useful in direct electron heating and current drive experiments. Other modifications have been made which are expected to permit arbitrary phasing between the current straps on bays M and L. The system design of the antenna, resonant loops and impedance matching system as well as preliminary TFTR results are discussed.

AB - Modifications have been made to allow two of the ICRF antennas (bays L and M) on TFTR to operate at either of two frequencies, 43 MHz or 64 MHz. This was accomplished by lengthening the resonant loops feeding the antennas (2λ at 43 MHz, 3λ at 64 MHz) and replacing the conventional quarter wave impedance transformers with a tapered impedance design. The other two antennas (bays K and N) will operate at a fixed frequency, 43 MHz. The two frequency operation allows a combination of 3He-minority (or T second harmonic) and H-minority heating at full toroidal field on TFTR. Multiple frequency operation may also be useful in direct electron heating and current drive experiments. Other modifications have been made which are expected to permit arbitrary phasing between the current straps on bays M and L. The system design of the antenna, resonant loops and impedance matching system as well as preliminary TFTR results are discussed.

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M3 - Conference contribution

AN - SCOPUS:0027719011

SN - 0780314131

T3 - Proceedings - Symposium on Fusion Engineering

SP - 621

EP - 624

BT - Proceedings - Symposium on Fusion Engineering

PB - Publ by IEEE

T2 - Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2)

Y2 - 12 October 1993 through 12 October 1993

ER -

Two frequency ICRF heating of D-T plasmas on TFTR

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