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AssigneesHitachi, Ltd., Yoshihisa Iwashita
InventorsMasahiro Tadokoro, Junichi Hirota, Kazuo Hiramoto, Masumi Umezawa, Yoshihisa Iwashita
Estimating the term…
An electromagnet comprises a pair of magnetic pole 1a and 1b, a return yoke 3, exciting coils 4 and 5, etc. In an interior portion of a magnetic pole, plural spacers 2a-2g are provided putting side by side in a horizontal direction. Each of the spaces 2a-2g is an air layer and a longitudinal cross-section is a substantially rectangular shape and the space has a lengthily extending slit shape in a vertical direction against a paper face in FIG. 1. The plural spaces are mainly arranged toward a right side from a beam orbit center O and an interval formed between adjacent spaces is narrower toward the right side. The electromagnet having a simple magnetic pole structure and a wide effective magnetic field area in a case where a maximum magnetic field strength is increased can be secured.
In an electromagnet for bending an orbit of a charged particle beam according to a magnetic field which is generated between magnetic poles;
An electromagnet comprises at least one pair of magnetic poles which are arranged oppositely, a return yoke for forming a magnetic path by connecting said magnetic poles to each other, and a coil for generating a magnetic field in a space formed between said magnetic poles in order to vary an orbit of a charged particle beam;
An electromagnet comprises at least one pair of magnetic poles which are arranged oppositely, a return yoke for forming a magnetic path by connecting said magnetic poles to each other, and a coil for generating a magnetic field in a space formed between said magnetic poles in order to vary an orbit of a charged particle beam between said magnetic poles;
A magnetic field generating apparatus comprises at least one pair of pole pieces which are arranged oppositely by forming an air gap, and a permanent magnet for supplying a magnetic flux to said pole piece, wherein
Dependencies are inferred from the claim text.