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Published January 2013 | public
Journal Article

Overlap Technique for End-Cap Seals on Cylindrical Magnetic Shields


We present results from studies of the effectiveness of an overlap technique for forming a magnetic seal across a gap at the boundary between a cylindrical magnetic shield and an end-cap. In this technique a thin foil of magnetic material overlaps the two surfaces, thereby spanning the gap across the cylinder and the end-cap, with the magnetic seal then formed by clamping the thin magnetic foil to the surfaces of the cylindrical shield and the end-cap on both sides of the gap. In studies with a prototype 31-cm diameter, 91-cm long, 0.16-cm thick cylindrical magnetic shield and flared end-cap, the magnetic shielding performance of our overlap technique is comparable to that obtained with the conventional method in which the end-cap is placed in direct lapped contact with the cylindrical shield via through bolts or screws.

Additional Information

© 2012 IEEE. Manuscript received April 16, 2012; revised June 30, 2012; accepted August 20, 2012. Date of publication August 23, 2012; date of current version December 19, 2012. This work was supported in part by the U.S. Department of Energy Office of Nuclear Physics under Award DE-FG02- 08ER41557 and by the University of Kentucky. The authors thank two anonymous referees for their useful comments.

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