Abstract
The conceptual design of the replacement solenoid for the 12 GeV upgrade at Jefferson Lab is analyzed structurally. First, stress distributions within a detailed cross-section of the winding pack under Lorentz and thermal loads are discussed. These stress distributions are used to evaluate the integrity of the copper conductor and fiberglass insulation. Slip planes are included between the ground insulation of each coil and the mandrel. Second, the design of the support rods that carry the axial EM forces attracting the cold mass to the iron, carry the weight of the cold mass and provide lateral elastic stiffness offsetting attraction of the cold mass to the iron yoke in the event the cold mass is not concentric with the iron yoke is also presented. Third, the integrity of the cryostat is evaluated while bearing loads from the cold mass supports, the attraction of the cold mass to the iron yoke, atmospheric pressure, and the step-stops preventing cryostat axial displacements. Fourth, the stresses in the conductor during winding are evaluated.
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