ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER

J. Stober; G. L. Jackson; E. Ascasibar; Y. S. Bae; J. Bucalossi; A. Cappa; T. Casper; M. H. Cho; Y. Gribov; G. Granucci; K. Hanada; J. Hobirk; A. W. Hyatt; S. Ide; J. H. Jeong; M. Joung; T. Luce; T. Lunt; W. Namkung; S. I. Park; P. A. Politzer; J. Schweinzer; A. C.C. Sips

doi:10.1088/0029-5515/51/8/083031

ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER

J. Stober, G. L. Jackson, E. Ascasibar, Y. S. Bae, J. Bucalossi, A. Cappa, T. Casper, M. H. Cho, Y. Gribov, G. Granucci, K. Hanada, J. Hobirk, A. W. Hyatt, S. Ide, J. H. Jeong, M. Joung, T. Luce, T. Lunt, W. Namkung, S. I. ParkP. A. Politzer, J. Schweinzer, A. C.C. Sips

Research output: Contribution to journal › Article › peer-review

55 Citations (Scopus)

Abstract

Electron cyclotron resonance heating (ECRH)-assisted plasma breakdown is foreseen with full and half magnetic field in ITER. As reported earlier, the corresponding O1- and X2-schemes have been successfully used to assist pre-ionization and breakdown in present-day devices. This contribution reports on common experiments studying the effect of toroidal inclination of the ECR beam, which is ≥20° in ITER. All devices could demonstrate successful breakdown assistance for this case also, although in some experiments the necessary power was almost a factor of 2 higher compared with perpendicular launch. Differences between the devices with regard to the required power and vertical field are discussed and analysed. In contrast to most of these experiments, ITER will build up loop voltage prior to the formation of the field null due to the strong shielding by the vessel. Possible consequences of this difference are discussed.

Original language	English
Article number	083031
Journal	Nuclear Fusion
Volume	51
Issue number	8
DOIs	https://doi.org/10.1088/0029-5515/51/8/083031
Publication status	Published - Aug 2011

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

Access to Document

10.1088/0029-5515/51/8/083031

Cite this

Stober, J., Jackson, G. L., Ascasibar, E., Bae, Y. S., Bucalossi, J., Cappa, A., Casper, T., Cho, M. H., Gribov, Y., Granucci, G., Hanada, K., Hobirk, J., Hyatt, A. W., Ide, S., Jeong, J. H., Joung, M., Luce, T., Lunt, T., Namkung, W., ... Sips, A. C. C. (2011). ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER. Nuclear Fusion, 51(8), [083031]. https://doi.org/10.1088/0029-5515/51/8/083031

Stober, J, Jackson, GL, Ascasibar, E, Bae, YS, Bucalossi, J, Cappa, A, Casper, T, Cho, MH, Gribov, Y, Granucci, G, Hanada, K, Hobirk, J, Hyatt, AW, Ide, S, Jeong, JH, Joung, M, Luce, T, Lunt, T, Namkung, W, Park, SI, Politzer, PA, Schweinzer, J & Sips, ACC 2011, 'ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER', Nuclear Fusion, vol. 51, no. 8, 083031. https://doi.org/10.1088/0029-5515/51/8/083031

@article{947fb1ad304944b08da6ea355dc9918b,

title = "ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER",

abstract = "Electron cyclotron resonance heating (ECRH)-assisted plasma breakdown is foreseen with full and half magnetic field in ITER. As reported earlier, the corresponding O1- and X2-schemes have been successfully used to assist pre-ionization and breakdown in present-day devices. This contribution reports on common experiments studying the effect of toroidal inclination of the ECR beam, which is ≥20° in ITER. All devices could demonstrate successful breakdown assistance for this case also, although in some experiments the necessary power was almost a factor of 2 higher compared with perpendicular launch. Differences between the devices with regard to the required power and vertical field are discussed and analysed. In contrast to most of these experiments, ITER will build up loop voltage prior to the formation of the field null due to the strong shielding by the vessel. Possible consequences of this difference are discussed.",

author = "J. Stober and Jackson, {G. L.} and E. Ascasibar and Bae, {Y. S.} and J. Bucalossi and A. Cappa and T. Casper and Cho, {M. H.} and Y. Gribov and G. Granucci and K. Hanada and J. Hobirk and Hyatt, {A. W.} and S. Ide and Jeong, {J. H.} and M. Joung and T. Luce and T. Lunt and W. Namkung and Park, {S. I.} and Politzer, {P. A.} and J. Schweinzer and Sips, {A. C.C.}",

year = "2011",

month = aug,

doi = "10.1088/0029-5515/51/8/083031",

language = "English",

volume = "51",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing Ltd.",

number = "8",

}

TY - JOUR

T1 - ECRH-assisted plasma start-up with toroidally inclined launch

T2 - Multi-machine comparison and perspectives for ITER

AU - Stober, J.

AU - Jackson, G. L.

AU - Ascasibar, E.

AU - Bae, Y. S.

AU - Bucalossi, J.

AU - Cappa, A.

AU - Casper, T.

AU - Cho, M. H.

AU - Gribov, Y.

AU - Granucci, G.

AU - Hanada, K.

AU - Hobirk, J.

AU - Hyatt, A. W.

AU - Ide, S.

AU - Jeong, J. H.

AU - Joung, M.

AU - Luce, T.

AU - Lunt, T.

AU - Namkung, W.

AU - Park, S. I.

AU - Politzer, P. A.

AU - Schweinzer, J.

AU - Sips, A. C.C.

PY - 2011/8

Y1 - 2011/8

N2 - Electron cyclotron resonance heating (ECRH)-assisted plasma breakdown is foreseen with full and half magnetic field in ITER. As reported earlier, the corresponding O1- and X2-schemes have been successfully used to assist pre-ionization and breakdown in present-day devices. This contribution reports on common experiments studying the effect of toroidal inclination of the ECR beam, which is ≥20° in ITER. All devices could demonstrate successful breakdown assistance for this case also, although in some experiments the necessary power was almost a factor of 2 higher compared with perpendicular launch. Differences between the devices with regard to the required power and vertical field are discussed and analysed. In contrast to most of these experiments, ITER will build up loop voltage prior to the formation of the field null due to the strong shielding by the vessel. Possible consequences of this difference are discussed.

AB - Electron cyclotron resonance heating (ECRH)-assisted plasma breakdown is foreseen with full and half magnetic field in ITER. As reported earlier, the corresponding O1- and X2-schemes have been successfully used to assist pre-ionization and breakdown in present-day devices. This contribution reports on common experiments studying the effect of toroidal inclination of the ECR beam, which is ≥20° in ITER. All devices could demonstrate successful breakdown assistance for this case also, although in some experiments the necessary power was almost a factor of 2 higher compared with perpendicular launch. Differences between the devices with regard to the required power and vertical field are discussed and analysed. In contrast to most of these experiments, ITER will build up loop voltage prior to the formation of the field null due to the strong shielding by the vessel. Possible consequences of this difference are discussed.

UR - http://www.scopus.com/inward/record.url?scp=80051649661&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051649661&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/51/8/083031

DO - 10.1088/0029-5515/51/8/083031

M3 - Article

AN - SCOPUS:80051649661

SN - 0029-5515

VL - 51

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 8

M1 - 083031

ER -

ECRH-assisted plasma start-up with toroidally inclined launch: Multi-machine comparison and perspectives for ITER

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this