KEKB大型衝突リング真空システムの運転経験 : 大電流蓄積に関連して  [in Japanese] Experience of Operating the Large Vacuum System of the KEKB Collider : High Stored Current Issues  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

For the KEK B-factory, an electron-positron collider which consists of two storage rings intersecting at the collision point has been running in operation since December 1998. The ring has a circumference of 3016 m, and its vacumm chambers are mainly made of copper. Untill July 2001, a fill with the initial current of 940 mA positron and 730 mA electron was established and the world record luminosity was achieved. Before the goal currents of 2.6 A positron and 1.1 A electron are achieved, the effect of high beam current has been emerging. The effect of electron cloud became evident especially in the LER. Some bellows were found to be warmed by the TE mode of beam induced fields. Direct damage by beam is seen at the surface of the movable mask. An indirect effect of the high beam current passing close to a vacuum seal is also observed.

Journal

  • Shinku

    Shinku 45(3), 149-152, 2002-03-20

    The Vacuum Society of Japan

References:  5

  • <no title>

    KANAZAWA K.

    Appl. Surf. Sci. 169-170, 715, 2001

    Cited by (1)

  • <no title>

    加藤茂樹

    第42回真空に関する連合講演会, 2001

    Cited by (1)

  • <no title>

    末次祐介

    第42回真空に関する連合講演会, 2001

    Cited by (2)

  • <no title>

    末次祐介

    第42回真空に関する連合講演会, 2001

    Cited by (2)

  • <no title>

    GROBNER O.

    Proc. 10th Int. Conf. on High Energy Accelerators 277, 1977

    Cited by (1)

Codes

  • NII Article ID (NAID)
    10008202836
  • NII NACSIS-CAT ID (NCID)
    AN00119871
  • Text Lang
    JPN
  • Article Type
    SHO
  • ISSN
    05598516
  • NDL Article ID
    6144145
  • NDL Source Classification
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL Call No.
    Z16-474
  • Data Source
    CJP  NDL  J-STAGE 
Page Top