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Assessment of current drive efficiency and the synergetic effect for ECCD and LHCD and the possibility of long pulse operation in ITER

A. Polevoi, A. Zvonkov, T. Oikawa, A. Kuyanov, M. Shimada, A. Saveliev, Yu. Gribov2008年被引用 11Nuclear FusionIF 3出版社

Steady state operation is preferable for fusion reactors. The possibility of extending the pulse length in ITER is considered taking into account the capabilities of the planned electron-cyclotron current drive (ECCD) and low-hybrid current drive (LHCD). The ECCD efficiency for current drive at different locations is assessed. The possibility of extending the pulse length by the increase in the current drive efficiency due to the synergetic effect for combined ECCD and LHCD at the same location is assessed. The calculated synergetic effect of ECCD and LHCD on the current drive efficiency is less than 10% for ITER parameters. Long pulse operation with the energy multiplication factor Pfus/Paux = Q > 5 and duration t > 3000 s will be possible in the case of enhanced confinement with respect to the ELMy H-mode scaling HH98y,2 ∼ 1.3–1.4.

日本語訳

定常運転は核融合炉にとって望ましい。ITERにおけるパルス長の延長の可能性について、計画中の電子サイクロトロン電流駆動(ECCD)および低域混成波電流駆動(LHCD)の能力を考慮して検討する。異なる位置での電流駆動におけるECCD効率を評価する。同じ位置でのECCDとLHCDの組み合わせによる相乗効果によって電流駆動効率が向上することによるパルス長延長の可能性を評価する。ITERのパラメータに対するECCDとLHCDの電流駆動効率への相乗効果は10%未満である。ELMy HモードスケーリングHH98y,2 ∼ 1.3–1.4に関して閉じ込めが向上した場合、エネルギー増倍率Pfus/Paux = Q > 5および持続時間t > 3000 sでの長時間パルス運転が可能となる。

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iter高精度(タイトル一致)

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ITERCurrent driveLower hybrid current driveElectron cyclotron current drive
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