Characterisation of local ICRF heat loads on the JET ILW

P. Jacquet; F. Marcotte; L. Colas; G. Arnoux; V. Bobkov; Y. Corre; S. Devaux; J. L. Gardarein; E. Gauthier; M. Graham; E. Lerche; M. L. Mayoral; I. Monakhov; F. Rimini; A. Sirinelli; D. Van Eester

doi:10.1016/j.jnucmat.2013.01.075

Characterisation of local ICRF heat loads on the JET ILW

P. Jacquet, F. Marcotte, L. Colas, G. Arnoux, V. Bobkov, Y. Corre, S. Devaux, J. L. Gardarein, E. Gauthier, M. Graham, E. Lerche, M. L. Mayoral, I. Monakhov, F. Rimini, A. Sirinelli, D. Van Eester

Laboratory for Plasma Physics

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

Abstract

When using Ion Cyclotron Range of Frequency (ICRF) heating, enhanced heat-fluxes are commonly observed on some plasma facing components close to the antennas. Experiments have recently been carried out on JET with the new ITER-Like-Wall (ILW) to characterize the heat flux to the JET ICRF antennas. Using Infra-Red thermography and thermal models of the tiles, heat-fluxes were evaluated from the surface temperature increase during the RF phase of L-mode plasmas. The maximum observed heat-flux intensity was ∼4.5 MW/m² when operating with -/2 current drive strap phasing at power level of 2 MW per antenna and with a 4 cm distance between the plasma and the outer limiters. Heat-fluxes are reduced when using dipole strap phasing. The fraction of ICRF power deposited on the antenna limiters or septa was in the range 2-10% for dipole phasing and 10-20% with ± p/2 phasing.

Original language	English
Pages (from-to)	S379-S383
Journal	Journal of Nuclear Materials
Volume	438
Issue number	SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2013.01.075
Publication status	Published - 2013

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Jacquet, P., Marcotte, F., Colas, L., Arnoux, G., Bobkov, V., Corre, Y., Devaux, S., Gardarein, J. L., Gauthier, E., Graham, M., Lerche, E., Mayoral, M. L., Monakhov, I., Rimini, F., Sirinelli, A., & Van Eester, D. (2013). Characterisation of local ICRF heat loads on the JET ILW. Journal of Nuclear Materials, 438(SUPPL), S379-S383. https://doi.org/10.1016/j.jnucmat.2013.01.075

@article{3f656e2bc832453e910238f72fa0ed99,

title = "Characterisation of local ICRF heat loads on the JET ILW",

abstract = "When using Ion Cyclotron Range of Frequency (ICRF) heating, enhanced heat-fluxes are commonly observed on some plasma facing components close to the antennas. Experiments have recently been carried out on JET with the new ITER-Like-Wall (ILW) to characterize the heat flux to the JET ICRF antennas. Using Infra-Red thermography and thermal models of the tiles, heat-fluxes were evaluated from the surface temperature increase during the RF phase of L-mode plasmas. The maximum observed heat-flux intensity was ∼4.5 MW/m2 when operating with -/2 current drive strap phasing at power level of 2 MW per antenna and with a 4 cm distance between the plasma and the outer limiters. Heat-fluxes are reduced when using dipole strap phasing. The fraction of ICRF power deposited on the antenna limiters or septa was in the range 2-10% for dipole phasing and 10-20% with ± p/2 phasing.",

author = "P. Jacquet and F. Marcotte and L. Colas and G. Arnoux and V. Bobkov and Y. Corre and S. Devaux and Gardarein, {J. L.} and E. Gauthier and M. Graham and E. Lerche and Mayoral, {M. L.} and I. Monakhov and F. Rimini and A. Sirinelli and {Van Eester}, D.",

note = "Funding Information: This work, supported by the European Communities under the contract of Association between EURATOM and CCFE, was carried out within the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This work was also part-funded by the RCUK Energy Programme under Grant EP/I501045.",

year = "2013",

doi = "10.1016/j.jnucmat.2013.01.075",

language = "English",

volume = "438",

pages = "S379--S383",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

number = "SUPPL",

}

Jacquet, P, Marcotte, F, Colas, L, Arnoux, G, Bobkov, V, Corre, Y, Devaux, S, Gardarein, JL, Gauthier, E, Graham, M, Lerche, E, Mayoral, ML, Monakhov, I, Rimini, F, Sirinelli, A & Van Eester, D 2013, 'Characterisation of local ICRF heat loads on the JET ILW', Journal of Nuclear Materials, vol. 438, no. SUPPL, pp. S379-S383. https://doi.org/10.1016/j.jnucmat.2013.01.075

TY - JOUR

T1 - Characterisation of local ICRF heat loads on the JET ILW

AU - Jacquet, P.

AU - Marcotte, F.

AU - Colas, L.

AU - Arnoux, G.

AU - Bobkov, V.

AU - Corre, Y.

AU - Devaux, S.

AU - Gardarein, J. L.

AU - Gauthier, E.

AU - Graham, M.

AU - Lerche, E.

AU - Mayoral, M. L.

AU - Monakhov, I.

AU - Rimini, F.

AU - Sirinelli, A.

AU - Van Eester, D.

N1 - Funding Information: This work, supported by the European Communities under the contract of Association between EURATOM and CCFE, was carried out within the framework of the European Fusion Development Agreement. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This work was also part-funded by the RCUK Energy Programme under Grant EP/I501045.

PY - 2013

Y1 - 2013

N2 - When using Ion Cyclotron Range of Frequency (ICRF) heating, enhanced heat-fluxes are commonly observed on some plasma facing components close to the antennas. Experiments have recently been carried out on JET with the new ITER-Like-Wall (ILW) to characterize the heat flux to the JET ICRF antennas. Using Infra-Red thermography and thermal models of the tiles, heat-fluxes were evaluated from the surface temperature increase during the RF phase of L-mode plasmas. The maximum observed heat-flux intensity was ∼4.5 MW/m2 when operating with -/2 current drive strap phasing at power level of 2 MW per antenna and with a 4 cm distance between the plasma and the outer limiters. Heat-fluxes are reduced when using dipole strap phasing. The fraction of ICRF power deposited on the antenna limiters or septa was in the range 2-10% for dipole phasing and 10-20% with ± p/2 phasing.

AB - When using Ion Cyclotron Range of Frequency (ICRF) heating, enhanced heat-fluxes are commonly observed on some plasma facing components close to the antennas. Experiments have recently been carried out on JET with the new ITER-Like-Wall (ILW) to characterize the heat flux to the JET ICRF antennas. Using Infra-Red thermography and thermal models of the tiles, heat-fluxes were evaluated from the surface temperature increase during the RF phase of L-mode plasmas. The maximum observed heat-flux intensity was ∼4.5 MW/m2 when operating with -/2 current drive strap phasing at power level of 2 MW per antenna and with a 4 cm distance between the plasma and the outer limiters. Heat-fluxes are reduced when using dipole strap phasing. The fraction of ICRF power deposited on the antenna limiters or septa was in the range 2-10% for dipole phasing and 10-20% with ± p/2 phasing.

UR - http://www.scopus.com/inward/record.url?scp=84885480230&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2013.01.075

DO - 10.1016/j.jnucmat.2013.01.075

M3 - Article

AN - SCOPUS:84885480230

SN - 0022-3115

VL - 438

SP - S379-S383

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - SUPPL

ER -

Characterisation of local ICRF heat loads on the JET ILW

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