본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Ramp-rate limitation in large superconducting magnets due to ‘supercurrents’

Krempasky, L. ; Schmidt, C. ;
  • 초록  

    Abstract Unexpected ramp-rate limitations were found in large superconducting accelerators magnets as well as in magnets for fusion experiments. We show in this article that the variation of the field sweep rate dBdt along the length of a superconducting cable induces extra coupling currents which flow over long lengths. Their time constants are many orders of magnitude larger than the time constant of ‘ordinary’ coupling currents. These ‘supercurrents’ can lead to a highly inhomogeneous current distribution in the cable. They furthermore create additional coupling losses (‘supercurrent losses’), even in magnet sections where dBdt = 0. Both of these effects may drastically reduce the stability of magnets during fast ramping up. It is shown that ramp-rate limitations measured in accelerator dipoles can clearly be attributed to the proposed effects. Experimental data that remained unexplained can thus be understood. This article gives the complete solution of time and space dependence of supercurrents and supercurrent losses in the approach of a two-wire model cable, which is obtained by solution of the diffusion equation.


  • 원문보기

    원문보기
    무료다운로드 유료다운로드
    • 원문이 없습니다.

    유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

  • 주제어

    superconducting magnets .   coupling currents .   stability.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역