The NBS magnetic monopole detector

We have built and operated several inductive type monopole detectors, the present one having three concentric, orthogonal loops operated in coincidence. The area of each loop is 200 cm 2 and the cross sectional area of the superconducting shield is 700 cm 2 . The detector loops are in a trapped magn...

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Bibliographic Details
Published in:IEEE transactions on magnetics Vol. 21; no. 2; pp. 418 - 420
Main Authors: Cromar, M., Clark, A., Fickett, F.
Format: Journal Article
Language:English
Published: IEEE 01-03-1985
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Summary:We have built and operated several inductive type monopole detectors, the present one having three concentric, orthogonal loops operated in coincidence. The area of each loop is 200 cm 2 and the cross sectional area of the superconducting shield is 700 cm 2 . The detector loops are in a trapped magnetic field of approximately 3 milligauss. The system is mechanically stable and is relatively insensitive to external disturbances, both mechanical and electro-magnetic. The detector is quiet, having a signal-to-noise ratio for monopole detection of approximately 20. We have also investigated several sources of noise and spurious signals which might mimic a monopole event.
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ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.1985.1063737