Vulnerability of feedthroughs operated at a low-impedance point on DIII-D

F. W. Baity; R. I. Pinsker; E. H. Fredd; N. L. Greenough; A. R. Horton; W. C. Martin

doi:10.1109/FUSION.2005.252945

Vulnerability of feedthroughs operated at a low-impedance point on DIII-D

F. W. Baity, R. I. Pinsker, E. H. Fredd, N. L. Greenough, A. R. Horton, W. C. Martin

Advanced Tokamak Physics

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

Abstract

Two vacuum feedthrough ceramics failed in separate incidents on DIII-D when operating at high power with the feedthrough near a low-voltage point in the transmission line. In each case a sustained arc in the feedthrough was not detected by the arc protection circuit because the impedance seen by directional couplers upstream was nearly the same as that observed with no arc. A different arc detection methodology is needed when operating with the vacuum feedthrough at a low-voltage point than the more usual situation with the vacuum feedthrough at high-voltage.

Original language	English
Title of host publication	21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	142440150X, 9781424401505
DOIs	https://doi.org/10.1109/FUSION.2005.252945
State	Published - 2005
Event	21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05 - Knoxville, TN, United States Duration: Sep 26 2005 → Sep 29 2005

Publication series

Name	Proceedings - Symposium on Fusion Engineering

Conference

Conference	21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05
Country/Territory	United States
City	Knoxville, TN
Period	09/26/05 → 09/29/05

Keywords

Arc protection
DIII-D
RF heating
Vacuum feedthrough

UN SDGs

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

Access to Document

10.1109/FUSION.2005.252945

Cite this

Baity, F. W., Pinsker, R. I., Fredd, E. H., Greenough, N. L., Horton, A. R., & Martin, W. C. (2005). Vulnerability of feedthroughs operated at a low-impedance point on DIII-D. In 21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05 Article 4018979 (Proceedings - Symposium on Fusion Engineering). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/FUSION.2005.252945

@inproceedings{d18b26920d6047728ef576551c9d8ec6,

title = "Vulnerability of feedthroughs operated at a low-impedance point on DIII-D",

abstract = "Two vacuum feedthrough ceramics failed in separate incidents on DIII-D when operating at high power with the feedthrough near a low-voltage point in the transmission line. In each case a sustained arc in the feedthrough was not detected by the arc protection circuit because the impedance seen by directional couplers upstream was nearly the same as that observed with no arc. A different arc detection methodology is needed when operating with the vacuum feedthrough at a low-voltage point than the more usual situation with the vacuum feedthrough at high-voltage.",

keywords = "Arc protection, DIII-D, RF heating, Vacuum feedthrough",

author = "Baity, {F. W.} and Pinsker, {R. I.} and Fredd, {E. H.} and Greenough, {N. L.} and Horton, {A. R.} and Martin, {W. C.}",

year = "2005",

doi = "10.1109/FUSION.2005.252945",

language = "English",

isbn = "142440150X",

series = "Proceedings - Symposium on Fusion Engineering",

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

booktitle = "21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05",

note = "21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05 ; Conference date: 26-09-2005 Through 29-09-2005",

}

Baity, FW, Pinsker, RI, Fredd, EH, Greenough, NL, Horton, AR & Martin, WC 2005, Vulnerability of feedthroughs operated at a low-impedance point on DIII-D. in 21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05., 4018979, Proceedings - Symposium on Fusion Engineering, Institute of Electrical and Electronics Engineers Inc., 21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05, Knoxville, TN, United States, 09/26/05. https://doi.org/10.1109/FUSION.2005.252945

Vulnerability of feedthroughs operated at a low-impedance point on DIII-D. / Baity, F. W.; Pinsker, R. I.; Fredd, E. H. et al.
21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05. Institute of Electrical and Electronics Engineers Inc., 2005. 4018979 (Proceedings - Symposium on Fusion Engineering).

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

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T1 - Vulnerability of feedthroughs operated at a low-impedance point on DIII-D

AU - Baity, F. W.

AU - Pinsker, R. I.

AU - Fredd, E. H.

AU - Greenough, N. L.

AU - Horton, A. R.

AU - Martin, W. C.

PY - 2005

Y1 - 2005

N2 - Two vacuum feedthrough ceramics failed in separate incidents on DIII-D when operating at high power with the feedthrough near a low-voltage point in the transmission line. In each case a sustained arc in the feedthrough was not detected by the arc protection circuit because the impedance seen by directional couplers upstream was nearly the same as that observed with no arc. A different arc detection methodology is needed when operating with the vacuum feedthrough at a low-voltage point than the more usual situation with the vacuum feedthrough at high-voltage.

AB - Two vacuum feedthrough ceramics failed in separate incidents on DIII-D when operating at high power with the feedthrough near a low-voltage point in the transmission line. In each case a sustained arc in the feedthrough was not detected by the arc protection circuit because the impedance seen by directional couplers upstream was nearly the same as that observed with no arc. A different arc detection methodology is needed when operating with the vacuum feedthrough at a low-voltage point than the more usual situation with the vacuum feedthrough at high-voltage.

KW - Arc protection

KW - DIII-D

KW - RF heating

KW - Vacuum feedthrough

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DO - 10.1109/FUSION.2005.252945

M3 - Conference contribution

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SN - 9781424401505

T3 - Proceedings - Symposium on Fusion Engineering

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PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 21st IEEE/NPS Symposium on Fusion Engineering, SOFE'05

Y2 - 26 September 2005 through 29 September 2005

ER -

Vulnerability of feedthroughs operated at a low-impedance point on DIII-D

Abstract

Publication series

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Keywords

UN SDGs

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