巻号一覧
38 巻 (2000)
- 6 号 p. 342-
- 5 号 p. 262-
- 4 号 p. 198-
- 3 号 p. 124-
- 2 号 p. 68-
- 1 号 p. 4-
前身誌
38 巻, 2 号
選択された号の論文の5件中1～5を表示しています
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小林 正典2000 年 38 巻 2 号 p. 68-72
発行日: 2000/03/25
公開日: 2010/08/05
ジャーナル フリーProgress of vacuum science and vacuum techniques in Ultra High Vacuum region is described briefly, and motivations and researches for getting Extreame High Vacuum are presented with their future applications.抄録全体を表示PDF形式でダウンロード (771K) -
一村 信吾2000 年 38 巻 2 号 p. 73-84
発行日: 2000/03/25
公開日: 2010/08/05
ジャーナル フリーCurent technologies to establish UHV and XHV conditions and present methods to measure UHV/XHV conditions were summarized and discussed. From the view point of UHV/XHV genetarion, the importance of controlling outgassing from vacuum chambers was first explained based on the equation of evacuation. Then several methods effective to reduce the outgassing rate were introduced. Those methods are application of electrochemical polishing, vacuum pre-baking, BN and TiN coating on SUS, and also the adoption of other materials than SUS such as aluminum and copper. The outgassing from pumping system and also the reduction of it were also discussed. As to UHV/XHV measurement, several principal problems associated with XHV measurement were first discussed, which were followed by the introduction of new XHV gauges and new measurement methods developed to overcome those problems.抄録全体を表示PDF形式でダウンロード (1614K) -
石川 雄一2000 年 38 巻 2 号 p. 85-94
発行日: 2000/03/25
公開日: 2010/08/05
ジャーナル フリーMaterials used for ultrahigh to extreme high vacuum (10-7-10-10Pa) applications are described in terms of their vacuum related properties such as outgassing and permeation characteristics. Materials discussed here are metals, glasses, ceramics, plastics and elastomers.
In order to attain ultrahigh to extremehigh vacuum, outgassing rates must be reduced to the order of 10-9-10-11Pam3/sm2. Such an order of outgassing rates is usually realized by baking at temperatures 120-300°C. The effect of baking and surface modification on the outgassing rate is given in detail for major vacuum chamber materials, stainless steels and aluminum alloys.抄録全体を表示PDF形式でダウンロード (1294K) -
加速器堀 洋一郎2000 年 38 巻 2 号 p. 95-105
発行日: 2000/03/25
公開日: 2010/08/05
ジャーナル フリーThe vacuum technology is one of bases of accelerator engineering. Every accelerator requires an ultra-high vacuum condition in order to achieve a long beam lifetime. This article describes the status and problems of the vacuum system, mainly of high-energy synchrotrons where both the outgassing and heat load is most severe because of intense synchrotron radiation.抄録全体を表示PDF形式でダウンロード (1524K) -
奥山 利久2000 年 38 巻 2 号 p. 106-114
発行日: 2000/03/25
公開日: 2010/08/05
ジャーナル フリーHigh speed vacuum pumping cryopumps for neutral beam injection heating system are presented. Cryo-condensation pumps had been mainly used in large vacuum devices with high gas load and high vacuum operation. However, recently cryosorption pumps with GM cryocooler have been developed for high speed vacuum pump. Cryo-condensation pump is tough to high heat load, on the other hand cryo sorption pump is easy to operate. The features of these two types of cryopump are explained.抄録全体を表示PDF形式でダウンロード (5491K)
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