In Cs frequency standards a zone of highly uniform magnetic flux density, lower in value of 0.1 T, is required. The magnetic homogeneity value is tied to the overall accuracy of the standard and, for an accuracy of 10-14, a design value 1 p.p.m. is required. For this purpose a resistive solenoid 700 mm long with a bore radius of 32.5 mm has been designed and built. This paper reports the design process, the measurements on the manufactured magnet and the shimming strategy used to reach the homogeneity target.
High homogeneity solenoidal magnet for cesium frequency standard / Costanzo, Giovanni Antonio; A., Demarchi; M., Nervi; Repetto, Maurizio. - In: IEEE TRANSACTIONS ON MAGNETICS. - ISSN 0018-9464. - 30:4(1994), pp. 2628-2631. [10.1109/20.305818]
High homogeneity solenoidal magnet for cesium frequency standard
COSTANZO, Giovanni Antonio;REPETTO, MAURIZIO
1994
Abstract
In Cs frequency standards a zone of highly uniform magnetic flux density, lower in value of 0.1 T, is required. The magnetic homogeneity value is tied to the overall accuracy of the standard and, for an accuracy of 10-14, a design value 1 p.p.m. is required. For this purpose a resistive solenoid 700 mm long with a bore radius of 32.5 mm has been designed and built. This paper reports the design process, the measurements on the manufactured magnet and the shimming strategy used to reach the homogeneity target.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/1399175
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