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  • Event Date
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    Location
    Remote
  • Event Date
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    Location
    Remote

  • Online Documentation for Running Hall-C
    (username/password are available from Hall C Counting Room)

  • Click images to see enlarged version or download the zip file.

    E03-008

  • The Hall-C Moller Polarimeter measures the polarization of the electron beam arriving in Hall-C. It does so by observing the rate of production of Moller electrons at 90 degrees in the center of mass when the beam strikes a thin iron target. The outer shell electrons in the iron are polarized parallel (or anti-parallel) to the beam direction by a 4 Tesla magnetic field. The Moller electron production rate differs when the beam and target electron spins are aligned parallel or anti-parallel to one-another. Measurement of this rate difference provides a measure of the beam polarization.

  • Event Date
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  • (1) Division 1's Pressure Vessels can be Designed with Division 2's Design by Analysis
    Elastic-Plastic Stress Analysis Method of Division 2 can be used to qualify Division 1 vessels by elevating the design factors from 2.4 (Division 2) to 3.5 (Division 1).

    Stress-strain curves of any materials used in elastic-plastic analysis shall be computed according to ASME, Section VIII, Division 2, Annex 3-D STRENGTH PARAMETERS (2019, page 148). Don’t use measured stress-strain curves. 
     

    (2) 2019 ASME Section VIII Division 1 and 2

  • Carl Carlson
    Theory Center Associate Staff
    Professor of Physics, College of William and Mary

    Research Highlights

  • J. Dirk Walecka
    Theory Center Associate Staff
    Assistant Professor of Physics, College of William and Mary

  • (1) Stress Concentration or Singularity

    For linear elastic analysis, there is no converged stress at the areas with stress concentration. The maximum stress is infinite just as the theory predicts. Thus, if there is stress concentration, the maximum stress in a linear elastic analysis is not a useful criterion to validate the structure.

    (2) A Beam Example of Stress Concentration