Conceptual Design of Tokamak High Power Reactor (A-SSTR2).
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- NISHIO Satoshi
- Japan Atomic Energy Research Institute
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- TOBITA Kenji
- Japan Atomic Energy Research Institute
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- USHIGUSA Kenkichi
- Japan Atomic Energy Research Institute
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- KONISHI Satoshi
- Japan Atomic Energy Research Institute
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- Reactor Design Team
- Japan Atomic Energy Research Institute
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Description
Based on the last decade of JAERI reactor design studies, an advanced commercial reactor concept (A-SSTR2) that meets both economical and environmental requirements has been proposed. The A-SSTR2 is a compact power reactor (Rp = 6.2 m, ap = 1.5 m, Ip = 12 MA) with a high fusion power (Pf = 4 GW) and a net thermal efficiency of 51%. The machine configuration is simplified by eliminating the center solenoid (CS) coil system. An SiC/SiC composite for the blanket structure material, helium gas cooling with a pressure of 10 MPa and an outlet temperature of 900°C, and TiH2 for the bulk shield material are introduced. For the toroidal field (TF) coil, a high temperature (TC) superconducting wire made of bismuth with a maximum field of 23 T and a critical current density of 1,000 A/mm2 at a temperature of 20 K is applied. In spite of the CS-less configuration, a computer simulation gives satisfactory plasma equilibria, plasma initiation process, and current ramp-up scenario. The current rampup time is about 22 hours. The MHD stabilities for the ballooning mode and the ideal low n kink-modes are confirmed. The stabilization of n = 1 and n = 2 kink modes requires a shell position closer than 1.4 times and 1.2 times the plasma minor radius, respectively. With regard to the divertor thermal condition, it was found that a neon gas-seeded divertor plasma with a fraction of ˜ 2.5% gives a thermal load reduction at the divertor plate from 460 MW to 100 MW and a plasma temperature drop at the divertor plate from 200 eV to 20 ˜ 30 eV. By increasing the shield thickness by about 15 cm, the total radwaste is dramatically reduced. The radwaste percentage relative to the total waste is reduced from 92 wt.% to 17 wt.%.
Journal
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- Journal of Plasma and Fusion Research
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Journal of Plasma and Fusion Research 78 (11), 1218-1230, 2002
The Japan Society of Plasma Science and Nuclear Fusion Research
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Details 詳細情報について
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- CRID
- 1390282681489720704
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- NII Article ID
- 10010393114
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- NII Book ID
- AN10401672
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- COI
- 1:CAS:528:DC%2BD3sXntlSktA%3D%3D
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- NDL BIB ID
- 6368567
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- ISSN
- 09187928
- http://id.crossref.org/issn/09187928
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed