KEKB加速器初期運転時の真空特性 Characteristics of KEKB Vacuum System during First Commissioning

この論文にアクセスする

この論文をさがす

著者

抄録

The commissioning of KEKB accelerator (KEKB-factory) started in December, 1998. The vacuum system is working almost satisfactorily although several troubles occurred near the interaction region. The photon stimulated gas desorption coefficient of copper beam chamber is decreasing steadily and reached to around 1×10<SUP>-5</SUP> molecules photon<SUP>-1</SUP> at the integrated linear photon flux of 1×10<SUP>24</SUP> photons m<SUP>-1</SUP>. The beam lifetime is increasing with the integrated beam current but is shorter than that expected by the average pressure especially for the Low Energy Ring. A pressure burst was observed at a straight section of the positron ring. The Helicoflex vacuum sealing is stable. Bellows and gate valves with RF-shield structure showed no excess heating up to the storage current of 500 mA.

収録刊行物

  • 真空  

    真空 43(3), 219-222, 2000-03-20 

    The Vacuum Society of Japan

参考文献:  5件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10004561565
  • NII書誌ID(NCID)
    AN00119871
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    05598516
  • NDL 記事登録ID
    5360856
  • NDL 雑誌分類
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL 請求記号
    Z16-474
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ