KEKB加速器での冷陰極真空計に対する光電子の影響 Effects of Photoelectrons on Cold Cathode Gauges in KEKB Accelerator

この論文にアクセスする

この論文をさがす

著者

抄録

Some cold cathode gauges (CCGs) in KEKB Accelerator show different behavior from other ones. These gauges have following characteristics : (1) The locations of these CCGs are limitted to just downstream side of bending magnets where the synchrotorn radiation is intense. (2) The discharge current is proportional to the beam current. (3) The discharge current is observed even without a permanent magnet of CCG. (4) The discharge current per unit beam current approaches to a constant value as the integrated beam current increases. From these characteristics, the observed abnormal discharge current of these CCGs is considered to be due to the photoelectrons generated by the synchrotron radiation. A simulation shows that the electrons are not generated inside of the beam chamber but inside the gauge chamber by reflected SR or accelerated photoelectrons that are produced inside the beam chamber. Attaching small dipole magnet at the neck of CCG port can remove the effect of secondary electrons.

収録刊行物

  • 真空  

    真空 43(3), 235-238, 2000-03-20 

    The Vacuum Society of Japan

参考文献:  3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)
    10004561592
  • 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
    5360886
  • 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