2013
DOI: 10.1088/0029-5515/53/7/073004
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Abstract: The sustainment of steady-state plasmas in tokamaks requires efficient current drive systems. Lower Hybrid Current Drive (LHCD) is currently the most efficient method to generate a continuous additional off-axis toroidal plasma current as well as reduce the poloidal flux consumption during the plasma current ramp-up phase. The operation of the Tore Supra ITER-like LH launcher has demonstrated the capability to couple LH power at ITER-like power densities with very low reflected power during long pulses. In add… Show more

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Cited by 14 publications
(8 citation statements)
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“…At the contrary of the model proposed in [16] [17] , a larger rectangular input section has been used (WR229 instead of WR187). It was found in [7] a range of dielectric thickness which combines low total dielectric losses (<650W) by minimizing the axial electric field in the ceramic and a low VSWR (S 11 <-25dB). We did not take into account in this study the impact of non-negligible amount of reflected power (>5%), such as experimented on tokamak.…”
Section: Rf and Thermo-mechanical Designmentioning
confidence: 99%
“…At the contrary of the model proposed in [16] [17] , a larger rectangular input section has been used (WR229 instead of WR187). It was found in [7] a range of dielectric thickness which combines low total dielectric losses (<650W) by minimizing the axial electric field in the ceramic and a low VSWR (S 11 <-25dB). We did not take into account in this study the impact of non-negligible amount of reflected power (>5%), such as experimented on tokamak.…”
Section: Rf and Thermo-mechanical Designmentioning
confidence: 99%
“…A non-inductive current drive can be realized using various heating and current drive systems, such as neutral beam injection (NBI), fast wave current drive (FWCD), lower hybrid current drive (LHCD), and electron cyclotron current drive (ECCD) [2][3][4][5][6]. Among these systems, the LHCD appears to have a high current drive efficiency with a far off-axis current drive capability [7,8]. However, the problem of LHCD efficiency in high density plasmas [7,9] is still open to investigation.…”
Section: Introductionmentioning
confidence: 99%
“…LHW are often used to heat the plasma and drive localized current in tokamaks [2] and a lower hybrid current drive (LHCD) system is designed for ITER to help control the q-profile in partially and fully non-inductive steady-state operation [3]. The Alfvén eigenmodes are usually driven unstable by energetic ions but can also be driven unstable by energetic electron populations [4].…”
Section: Introductionmentioning
confidence: 99%