英国物理学会
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作者:... K. Fujii , H. Funaba , M. Goto
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (10)
摘要:As the finalization of a hydrogen experiment towards the deuterium phase, the exploration of the best performance of hydrogen plasma was intensively performed in the large helical device. High ion and electron temperatures, T i and T e, of more than 6 keV we...
作者:H. Funaba , T. Minami ...
来源:[J].Journal of Instrumentation(IF 1.869), 2019, Vol.14 (6)
摘要:We developed an yttrium aluminium garnet (YAG)-Thomson scattering (TS) system for measuring an electron temperature and density in the divertor simulation experimental module (D-module) plasma in GAMMA 10/PDX. We applied a frequency multiplied microwave interferometer (MIF) syste...
作者:H. Funaba , Y. Suzuki ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (6)
摘要:In the large helical device, plasma with more than 4% average beta was successfully produced by multi-pellet injections in a regime with a collisionality one order of magnitude lower than that in previous high-beta operations. An improvement in particle confinement was observed d...
作者:H. Funaba , K. Ida ...
来源:[J].Nuclear Fusion(IF 2.734), 2018, Vol.58 (10)
摘要:The dependence of the energy confinement and energy transport on the isotope mass is a long-standing open question in the stellarator community. With the recent upgrade of the Large Helical Device to allow for deuterium plasma operation, systematic isotope experiments could ...
作者:H. Funaba , T. Kobayashi ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (11)
摘要:Surveys of the ion and electron heat transports of neutral beam (NB) heating plasma were carried out by power balance analysis in He and H rich plasma at LHD. Collisionality was scanned by changing density and heating power. The characteristics of the transport vary dependin...
作者:... R. Yasuhara , H. Funaba , K. Tanaka
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (8)
摘要:Impurity seeding to reduce the divertor heat load was conducted in the large helical device (LHD) using neon (Ne) and krypton (Kr) puffing. Radiation enhancement and reduction of the divertor heat load were observed. In the LHD, the ratio between the total radiated power and...
作者:H. Funaba , K. Kawataha
来源:[J].Journal of Instrumentation(IF 1.869), 2015, Vol.10 (8)
摘要:A multi-pass (MP) Thomson scattering (TS) system modeled on the GAMMA 10/PDX TS system was constructed for enhancing the Thomson scattered signals. The MPTS system has a polarization-based configuration with an image relaying system. The former MPTS system in GAMMA 10/PDX can mea...
作者:... I. Yamada , H. Funaba , T. Minami
来源:[J].Journal of Instrumentation(IF 1.869), 2015, Vol.10 (11)
摘要:A Thomson scattering (TS) system in GAMMA 10/PDX has been developed for the measurement of radial profiles of electron temperature and density in a single plasma and laser shot. The TS system has a large solid angle optical collection system and high-sensitivity signal detection ...
作者:H. Funaba , M. Goto ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (10)
摘要:The ability to exhaust helium as the fusion born plasma impurity is a critical requirement for burning plasmas. We demonstrate in this paper that resonant magnetic perturbation (RMP) fields can be used to actively manipulate helium exhaust characteristics. We present results...
作者:H. Funaba , S. Sakakibara ...
来源:[J].Nuclear Fusion(IF 2.734), 2008, Vol.48 (1)
摘要:In the Large Helical Device (LHD) experiment, complete detachment takes place when the plasma column shrinks inside the last-closed-flux-surface (LCFS). The density at the LCFS that results in this shrinking corresponds to the maximum LCFS density achievable under the attach...

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