Safety design of radiation shielding for JT-60SA

Sukegawa, Atsuhiko M.; Sakurai, S.; Masaki, K.; Kizu, K.; Tsuchiya, Kazuyoshi; Shibama, Yusuke; Hayashi, Takao; Tamai, Hiroshi; Matsukawa, M.

doi:10.1016/j.fusengdes.2007.06.021

Cited by 14 publications

(12 citation statements)

References 7 publications

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“…Consideration of the shielding effect of the cryostat for biological shielding in the torus hall, the borated water as the shielding material is adopted to initial JT-60SA shielding design. The structure consists of double wall using the 24 mm thickness of SS316L filled with the 140 mm thick borated water 1) .…”

Section: Radiation Shieldingmentioning

confidence: 99%

“…The radiation shielding performance of the vacuum vessel by using pure water was insufficient, so that we selected the water with boric acid, namely borated water, instead of pure water. The thickness of the borated water layer 140 mm was adopted from the radiation shielding design of toroidal field magnetic (TF) superconducting winding by 1D calculation 1) .…”

Section: Introductionmentioning

confidence: 99%

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Neutronic Analysis of Fusion Tokamak Devices by PHITS

Sukegawa

Takiyoshi

Amano

et al. 2011

Progress in Nuclear Science and Technology

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A complete 3D neutronic analysis by PHITS (Particle and Heavy Ion Transport code System) has been performed for fusion tokamaku devices such as JT-60U device and JT-60 Superconducting tokamak device (JT-60 Super Advanced). The mono-energetic neutrons (E n =2.45 MeV) of the DD fusion devices are used for the neutron source in the analysis. The visual neutron flux distribution for the estimation of the port streaming and the dose rate around the fusion tokamak devices has been calculated by the PHITS. The PHITS analysis makes it clear that the effect of the port streaming of superconducting fusion tokamak device with the cryostat is crucial and the calculated neutron spectrum results by PHITS agree with the MCNP-4C2 results.

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Section: Radiation Shieldingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Neutronic Analysis of Fusion Tokamak Devices by PHITS

Sukegawa

Takiyoshi

Amano

et al. 2011

Progress in Nuclear Science and Technology

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“…The thickness of the borated water layer 140 mm was adopted from the radiation shielding design of toroidal field magnetic (TF) superconducting winding by 1D calculation and 2D calculation on the conceptual design. 8) In the present radiation shielding design, the radiation shielding concepts of JT-60SA are entrusted by mainly the vacuum vessel and the cryostat due to the restricted space in the building. From the 3D neutron and photon transports analysis, it was clarified that the effects of neutrons by the port streaming of the JT-60SA are clearly depicted in JT-60 torus hall.…”

Section: Phits (Particle and Heavy Ion Transport Code System)mentioning

confidence: 99%

“…The structure consists of double wall using the 24 mm thickness of SS316L filled with the 140 mm (inboard) of the borated water. 8) In the shielding design by borated water, the borated water needs the temperature management of the plant. As a decrease plan of capital investment on the plant, the design without the management of the borated water is demanded.…”

Section: Vacuum Vessel Designmentioning

confidence: 99%

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Conceptual Radiation Shielding Design of Superconducting Tokamak Fusion Device by PHITS

Sukegawa

Kawasaki

Okuno³

2011

Progress in Nuclear Science and Technology

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A 3D neutron and photon transport analysis by Monte Carlo transport code system PHITS (Particle and Heavy Ion Transport code System) has been performed for superconducting tokamak fusion device such as JT-60 Super Advanced (JT-60SA). It is possible to make use of PHITS in the port streaming analysis around the devices for the tokamak fusion device, the duct streaming analysis in the building where the device is installed, and the sky shine analysis for the site boundary. The neutron transport analysis by PHITS makes it clear that the shielding performance of the superconducting tokamak fusion device with the cryostat has been improved by the graphical results. From the standpoint of the port and duct streaming, it is necessary to estimate by 3D Monte Carlo code such as PHITS for the neutronics analysis of superconducting tokamak fusion device.

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