Magnet pole pieces and pole piece extensions and shields
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01F-003/00
H01F-007/02
H01F-007/08
출원번호
US-0104786
(1979-12-18)
발명자
/ 주소
Flack Arnold (15913 Pennsylvania Southfield MI 48075)
인용정보
피인용 횟수 :
15인용 특허 :
0
초록▼
Pole piece structures for permanent magnets and electromagnets, more particularly for superconducting electromagnets, and pole piece extensions and shields adapted, separately and in combination, to achieve a high concentration of the magnetic flux along the principal magnetic axis of the pole piece
Pole piece structures for permanent magnets and electromagnets, more particularly for superconducting electromagnets, and pole piece extensions and shields adapted, separately and in combination, to achieve a high concentration of the magnetic flux along the principal magnetic axis of the pole pieces, and preventing magnetic flux leakage and dispersion. The pole pieces are preferably conical or frusto-conical, or in the form of hollow cylinders or conical cylinders or, alternatively, provided with a tapered step ending in a pointed cylinder, a flat cylinder, or a hollow cylinder. The pole piece configurations provide a high concentration of magnetic flux intensity in the magnetic gap between the pole pieces either along the centerline of the pole pieces or in a cylindrical space disposed axially along the centerline of the pole pieces. Pole piece extensions, or field concentration members in the form of cylindrical, frusto-conical, helical shields or, alternatively, in the form of cylindrical, frusto-conical, single or multiple concentric shields, are disposed around the pole pieces as a further arrangement for shaping the magnetic flux and concentrating the high intensity magnetic lines of force in an appropriate region of the magnetic gap between the ends of the pole pieces, thus producing a high flux intensity in a predetermined region of the gap space in applications where such a controlled high intensity magnetic flux is required, as, for example, for magnetically confining a critical mass of ions, such as deuterons and tritons in an energy fusion reaction.
대표청구항▼
In combination, a magnet pole piece having a frusto-conical end portion and a magnetic field correction member for the magnetic field formed by the magnet pole piece, said correction member comprising at least one hollow shield member attached to the frusto-conical end portion, said hollow shield me
In combination, a magnet pole piece having a frusto-conical end portion and a magnetic field correction member for the magnetic field formed by the magnet pole piece, said correction member comprising at least one hollow shield member attached to the frusto-conical end portion, said hollow shield member being made of magnetic material, wherein said hollow shield is in the form of a generally conical diverging helical strand of said magnetic material.
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