FIELD: electrical engineering. SUBSTANCE: shielding facility includes body, magnetic circuit which space is filled with ferromagnetic liquid. Body manufactured in the form of set of shells installed with gaps relative one another is utilized in the capacity of magnetic circuit. Body is made of nonmagnetic material. Shells of body can be of multilayer type. EFFECT: constant gradient of magnetic field inside facility is ensured, doors and hatches are reliably closed, screening constant can be regulated in wide range. 2 cl, 1 dwg
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