JT-60 upgrade device for confinement and steady state studies

Ninomiya, H.; Ando, T.; Horie, Takeshi; Horiike, Hiroshi; Koizumi, K.; Kushima, T.; Matsukawa, M.; Neyatani, Y.; Yamamoto, Masahiro

doi:10.1080/10519999008225528

Cited by 57 publications

(11 citation statements)

References 9 publications

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“…After the construction of JT-60U in 1990-1991 [4,5], deuterium experiments have begun at July 1991. In 1997, the divertor structure inside the vacuum vessel was modified from an open divertor to a W-shaped divertor with pumping to study high-performance plasmas and steady-state operation [6].…”

Section: Methodsmentioning

confidence: 99%

Major results of the cooperative program between JAERI and universities using plasma facing materials in JT-60U

Miya¹,

Tanabe

Nishikawa

et al. 2004

Journal of Nuclear Materials

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Section: Methodsmentioning

confidence: 99%

Major results of the cooperative program between JAERI and universities using plasma facing materials in JT-60U

Miya¹,

Tanabe

Nishikawa

et al. 2004

Journal of Nuclear Materials

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“…The pumping speed achieved was about 800 m3/s. (7) The JT-60 NB system is now under modifications to raise the beam energy up to 120 keV and to convert into deuterium beams system for the JT-60 upgrade [14].…”

Section: Discussionmentioning

confidence: 99%

Operations of neutral beam system in JT-60

Kuriyama¹,

Akiba²,

Akin³

et al. 1991

Plasma Devices and Operations

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The J1-60 neutral beam system has been successfully operated for 4 years under a wide range of operation conditions: beam energy of 30-75 keV, beam pulse up to 6 s, injection power up to 26 MW with hydrogen beams. The maximum injection power of 26 MW was obtained at 73 keV with a two-stage accelerator. In a lower energy beam injection with a single-stage accelerator, the beam power at 38 keV reached 18 MW. The system could routinely inject a nominal power of 20 MW with high reliability. The beam energy could be changed during a beam pulse, e.g. from 40 keV to 70 keV for 1.5 s. Helium beams were injected with one of the beamlines for a simulation experiment of helium ash, and the injected power was 0.4 MW at 31 keV. The helium beams could deposit in the vicinity of the plasma center column. Helium gas in the beamline was evacuated by SF6 gas condensed cryo-sorption pumps whose pumping speed was about 800 m3/s.

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“…5 (b). This parallel computing method has been applied to a large scale electromagnetic-mechanical coupled analysis of JT-6OU [9] vacuum vessel in a state of plasma disruption. Current quench time of 10 ms for 6 MA plasma current and the steady toroidal field of 4.2 T are assumed for the analysis, which are the same as the design condition.…”

Section: A Estimation Of Parallel Execution Timementioning

confidence: 99%

Parallel electromagnetic-mechanical coupled analysis using combined domain decomposition method

1997

Self Cite

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Since the electromagnetic-mechanical coupled analysis requires large computation time, development of the parallel processing techniques is inevitable. In this paper, the parallel computing technique with the combination of the domain decomposition method and the domain partitioned conjugate gradient method is proposed. The method to evaluate the parallel performance is presented and discussed for the coupled problem using a workstation cluster. This method is efficient for a large scale coupled problem of a magnetic fusion device component.

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JT-60 upgrade device for confinement and steady state studies

Cited by 57 publications

References 9 publications

Major results of the cooperative program between JAERI and universities using plasma facing materials in JT-60U

Major results of the cooperative program between JAERI and universities using plasma facing materials in JT-60U

Operations of neutral beam system in JT-60

Parallel electromagnetic-mechanical coupled analysis using combined domain decomposition method

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