FIELD: physics.
SUBSTANCE: SQUID magnetometer receiving element has a nonmagnetic vacuum cryostat with a flat bottom part and a flange on the neck attached to a suspension lying in the bottom part of the cryostat and a set of gradient metres mounted on the suspension which are connected to direct current superconducting quantum interference devices (SQUID) connected to a recording system. Each gradient metre is in form of an axially symmetric second order gradient metre and is a module integrated with the SQUID and formed on a cylindrical frame. Windings of the gradient metre are placed on the outer surface of the frame on the side of the bottom part of the cryostat, and the SQUID on the opposite end part in a capsule made from superconducting material which forms a magnetic shield.
EFFECT: stabilisation of the structure, high reliability and universality by arranging a given number of gradient metres without change in design overall, selection of the material of the frame of a single gradient metre which enables to filter high-frequency noise.
5 cl, 4 dwg
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Authors
Dates
2012-07-27—Published
2011-04-28—Filed