The welding Characteristics of the Insertion Device Vacuum Chamber of PLS Storage Ring

가속기 저장링 삽입장치 진공 챔버의 용접

  • 최만호 (포항공과대학교 포항가속기연구소) ;
  • 한영진 (포항공과대학교 포항가속기연구소) ;
  • 김창균 (포항공과대학교 포항가속기연구소) ;
  • 정진화 (포항공과대학교 포항가속기연구소) ;
  • 권영각 (포항산업과학기술연구원)
  • Published : 1999.08.01

Abstract

PAL(Pohang Accelerator Laboratory) designed and manufactured a 5m-long straight vacuum chamber to adopt U7 undulator that is the first insertion device. Top and bottom plates of the vacuum chamber were made of Al alloy A5083-H321, and welded together by the GTAW welding. The leak rate is less than 1×{TEX}$10^{-10}${/TEX} torr·ℓ/s with negligible welding deformation. The pressure has been maintained below {TEX}$10^{-10}${/TEX} torr after installation. This paper reports the welding process and the method applied to achieve ultimate vacuum performance and t satisfy integrity of welds.

Keywords

References

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