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59 巻, 1 号
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苫米地 顕1988 年 59 巻 1 号 p. 5-10
発行日: 1988/01/20
公開日: 2011/03/04
ジャーナル フリーNew international co-operation for the next step in the tokamak approach will start in early 1988 under the auspieces of IAEA. The project is referred to as ITER, the acronym for International Thermonuclear Experimental Reactor, and has the goal of producing a conceptual design of the machine by 1990. The scope includes the determination of the technical parameters of the experiment, the research and development necessary to validate the assumptions underlying the concept, and the estimation of costs and time needed to actually build the fusion machine.抄録全体を表示PDF形式でダウンロード (648K) -
糟谷 紘一1988 年 59 巻 1 号 p. 11-19
発行日: 1988/01/20
公開日: 2011/03/04
ジャーナル フリーAs the efficiency to produce light ion beams is much higher than the lasers, they are expected to become the future energy drivers for the inertial confinement fusion. So, the main issues described here are their productions, transportations and target irradiations. The world top machine is now under operation to arrive at a mile stone to obtain 30 MV-4 MA singly ionized lithium beams in USA. Future prospects for such kind of light ion beams are also shown briefly.抄録全体を表示PDF形式でダウンロード (950K) -
大平 竜也, 福家 康隆, 内海 雅文, 村上 好樹, 鎌田 裕, 山田 弘司, 吉田 善章, 井上 信幸1988 年 59 巻 1 号 p. 20-29
発行日: 1988/01/20
公開日: 2011/03/04
ジャーナル フリーThe effects of the wall-conditioning and current ramp-up in ULQ (ultra-low q) discharges are studied in TORIUT-6 by both spectroscopic method and electro-static probes. The plasma current is ramped up by means of increasing the toroidal field in an ULQ discharge in which a quiescent phase is sustained longer than that obserbed in normal discharges. The impurities from a wall and limiters are decreased by the carbonization. The ion density profile in the plasma edge is measured before and after the carbonization, and it is seen that the confinement at the plasma peripheral region is improved by the wall-conditioning.抄録全体を表示PDF形式でダウンロード (921K) -
沈 雲, 高村 秀一, 岩間 尚文, 黒田 勉, 奥田 孝美1988 年 59 巻 1 号 p. 30-50
発行日: 1988/01/20
公開日: 2011/03/04
ジャーナル フリーVisible light computed tomography is quite attractive as one of diagnostic techniques for edge plasma. In this paper, a special CT scanner designed for plasma experiments is developed. Using two types of algorithm, the spline function method (SFM) and the algebraic reconstruction technique (ART), experiments on plasma image reconstruction are performed for a visible emission distribution in a neon discharge tube and Hα emission distribution of tokamak plasma. An effective method to avoid light reflection at the vacuum wall is employed. Two reconstruction methods, ART and SFM, are compared with eath other on their characteristics, advantages and disadvantages, from the view points of simulation and experiment. The effects of data missing on image reconstruction, which is a common problem for all plasma CT algorithms, are also discussed.抄録全体を表示PDF形式でダウンロード (2418K)
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