Impurity radiation for detecting arcs during high lower hybrid power transmission at JET

M. Goniche; J. Mailloux; Y. Baranov; T. M. Biewer; I. Coffey; L. Delpech; A. Ekedahl; J. Hillairet; K. Kirov; M. L. Mayoral; J. Ongena; G. Sergienko

doi:10.1063/1.3273764

Impurity radiation for detecting arcs during high lower hybrid power transmission at JET

M. Goniche
, J. Mailloux
, Y. Baranov
, T. M. Biewer
, I. Coffey
, L. Delpech
, A. Ekedahl
, J. Hillairet
, K. Kirov
, M. L. Mayoral
, J. Ongena
, G. Sergienko

Diagnostics and Control

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

Abstract

During high power commissioning of the JET LH launcher, the radiation and impurity release has been analyzed from various diagnostics: VUV and visible spectroscopy, bolometry. These two last diagnostics have lines-of-sight viewing the launcher and can provide information about the electron and/or impurity source localisation. Using a database of 800 plasmas, it is concluded that the iron contamination (FeXV and FeXXIII) is very low for 94% of the pulses and increases linearly with LH power. During arcs, a strong and fast increase of the radiation along the line-of-sight viewing the launcher is observed. This diagnostic could provide a tool for arc detection complementary to the RF measurements aiming at reducing the metal contamination in the plasma.

Original language	English
Title of host publication	Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference
Pages	347-350
Number of pages	4
DOIs	https://doi.org/10.1063/1.3273764
State	Published - 2009
Event	18th Topical Conference on Radio Frequency Power in plasmas - Gent, Belgium Duration: Jun 24 2009 → Jun 26 2009

Publication series

Name	AIP Conference Proceedings
Volume	1187
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	18th Topical Conference on Radio Frequency Power in plasmas
Country/Territory	Belgium
City	Gent
Period	06/24/09 → 06/26/09

Keywords

Arcing
ITER
Impurity
JET
LHCD
Lower hybrid
Radiation

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10.1063/1.3273764

Cite this

Goniche, M., Mailloux, J., Baranov, Y., Biewer, T. M., Coffey, I., Delpech, L., Ekedahl, A., Hillairet, J., Kirov, K., Mayoral, M. L., Ongena, J., & Sergienko, G. (2009). Impurity radiation for detecting arcs during high lower hybrid power transmission at JET. In Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference (pp. 347-350). (AIP Conference Proceedings; Vol. 1187). https://doi.org/10.1063/1.3273764

@inproceedings{47f9a6ee4d4748afb78e37d111eec9d9,

title = "Impurity radiation for detecting arcs during high lower hybrid power transmission at JET",

abstract = "During high power commissioning of the JET LH launcher, the radiation and impurity release has been analyzed from various diagnostics: VUV and visible spectroscopy, bolometry. These two last diagnostics have lines-of-sight viewing the launcher and can provide information about the electron and/or impurity source localisation. Using a database of 800 plasmas, it is concluded that the iron contamination (FeXV and FeXXIII) is very low for 94\% of the pulses and increases linearly with LH power. During arcs, a strong and fast increase of the radiation along the line-of-sight viewing the launcher is observed. This diagnostic could provide a tool for arc detection complementary to the RF measurements aiming at reducing the metal contamination in the plasma.",

keywords = "Arcing, ITER, Impurity, JET, LHCD, Lower hybrid, Radiation",

author = "M. Goniche and J. Mailloux and Y. Baranov and Biewer, \{T. M.\} and I. Coffey and L. Delpech and A. Ekedahl and J. Hillairet and K. Kirov and Mayoral, \{M. L.\} and J. Ongena and G. Sergienko",

year = "2009",

doi = "10.1063/1.3273764",

language = "English",

isbn = "9780735407534",

series = "AIP Conference Proceedings",

pages = "347--350",

booktitle = "Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference",

note = "18th Topical Conference on Radio Frequency Power in plasmas ; Conference date: 24-06-2009 Through 26-06-2009",

}

Goniche, M, Mailloux, J, Baranov, Y, Biewer, TM, Coffey, I, Delpech, L, Ekedahl, A, Hillairet, J, Kirov, K, Mayoral, ML, Ongena, J & Sergienko, G 2009, Impurity radiation for detecting arcs during high lower hybrid power transmission at JET. in Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference. AIP Conference Proceedings, vol. 1187, pp. 347-350, 18th Topical Conference on Radio Frequency Power in plasmas, Gent, Belgium, 06/24/09. https://doi.org/10.1063/1.3273764

Impurity radiation for detecting arcs during high lower hybrid power transmission at JET. / Goniche, M.; Mailloux, J.; Baranov, Y. et al.
Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference. 2009. p. 347-350 (AIP Conference Proceedings; Vol. 1187).

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

TY - GEN

T1 - Impurity radiation for detecting arcs during high lower hybrid power transmission at JET

AU - Goniche, M.

AU - Mailloux, J.

AU - Baranov, Y.

AU - Biewer, T. M.

AU - Coffey, I.

AU - Delpech, L.

AU - Ekedahl, A.

AU - Hillairet, J.

AU - Kirov, K.

AU - Mayoral, M. L.

AU - Ongena, J.

AU - Sergienko, G.

PY - 2009

Y1 - 2009

N2 - During high power commissioning of the JET LH launcher, the radiation and impurity release has been analyzed from various diagnostics: VUV and visible spectroscopy, bolometry. These two last diagnostics have lines-of-sight viewing the launcher and can provide information about the electron and/or impurity source localisation. Using a database of 800 plasmas, it is concluded that the iron contamination (FeXV and FeXXIII) is very low for 94% of the pulses and increases linearly with LH power. During arcs, a strong and fast increase of the radiation along the line-of-sight viewing the launcher is observed. This diagnostic could provide a tool for arc detection complementary to the RF measurements aiming at reducing the metal contamination in the plasma.

AB - During high power commissioning of the JET LH launcher, the radiation and impurity release has been analyzed from various diagnostics: VUV and visible spectroscopy, bolometry. These two last diagnostics have lines-of-sight viewing the launcher and can provide information about the electron and/or impurity source localisation. Using a database of 800 plasmas, it is concluded that the iron contamination (FeXV and FeXXIII) is very low for 94% of the pulses and increases linearly with LH power. During arcs, a strong and fast increase of the radiation along the line-of-sight viewing the launcher is observed. This diagnostic could provide a tool for arc detection complementary to the RF measurements aiming at reducing the metal contamination in the plasma.

KW - Arcing

KW - ITER

KW - Impurity

KW - JET

KW - LHCD

KW - Lower hybrid

KW - Radiation

UR - https://www.scopus.com/pages/publications/73449141422

U2 - 10.1063/1.3273764

DO - 10.1063/1.3273764

M3 - Conference contribution

AN - SCOPUS:73449141422

SN - 9780735407534

T3 - AIP Conference Proceedings

SP - 347

EP - 350

BT - Radio Frequency Power in plasmas - Proceedings of the 18th Topical Conference

T2 - 18th Topical Conference on Radio Frequency Power in plasmas

Y2 - 24 June 2009 through 26 June 2009

ER -

Impurity radiation for detecting arcs during high lower hybrid power transmission at JET

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Keywords

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