Title:
RF ELECTRON GUN
Document Type and Number:
WIPO Patent Application WO/2008/068806
Kind Code:
A1
Abstract:
A small and inexpensive RF electron gun capable of outputting an electron beam
with high convergence comprises a housing (10), a magnet consisting of a pole
piece (13d) and a coil (14d) to generate a magnetostatic field, an emitter (15)
arranged in a region generating the magnetostatic field and emitting electrons
(e), an acceleration cavity (16) arranged in a region generating the magnetostatic
field and generating a high frequency electric field on receiving a microwave
(RF), and correction magnets (18d, 19d), wherein the magnet forms a first region
having a uniform magnetostatic field and second regions (A1, A2) where the strength
of magnetostatic field varies monotonously, and a plurality of electrons emitted
from the emitter (15) are moved spirally (S) by the high frequency electric field
and the magnetostatic field in the first region and then converged by the magnetostatic
field in the second region (A1) and the correction magnets (18d, 19d) before being
outputted.
Inventors:
YAMADA, Hironari (4-2-1, Takagai-cho minami Omihachiman-sh, Shiga 98, 5230898, JP)
山田 廣成 (〒98 滋賀県近江八幡市鷹飼町南４－２－１（８０８） Shiga, 5230898, JP)
HASEGAWA, Daisuke (912-4-409, Noji-cho Kusatsu-sh, Shiga 55, 5250055, JP)
山田 廣成 (〒98 滋賀県近江八幡市鷹飼町南４－２－１（８０８） Shiga, 5230898, JP)
HASEGAWA, Daisuke (912-4-409, Noji-cho Kusatsu-sh, Shiga 55, 5250055, JP)
Application Number:
JP2006/323978
Publication Date:
June 12, 2008
Filing Date:
November 30, 2006
Export Citation:
Assignee:
PHOTON PRODUCTION LABORATORY, LTD. (4-2-1, Takagai-cho minami Omihachiman-sh, Shiga 98, 5230898, JP)
株式会社光子発生技術研究所 (〒98 滋賀県近江八幡市鷹飼町南４－２－１（８０８） Shiga, 5230898, JP)
YAMADA, Hironari (4-2-1, Takagai-cho minami Omihachiman-sh, Shiga 98, 5230898, JP)
山田 廣成 (〒98 滋賀県近江八幡市鷹飼町南４－２－１（８０８） Shiga, 5230898, JP)
株式会社光子発生技術研究所 (〒98 滋賀県近江八幡市鷹飼町南４－２－１（８０８） Shiga, 5230898, JP)
YAMADA, Hironari (4-2-1, Takagai-cho minami Omihachiman-sh, Shiga 98, 5230898, JP)
山田 廣成 (〒98 滋賀県近江八幡市鷹飼町南４－２－１（８０８） Shiga, 5230898, JP)
International Classes:
H01J3/02; H01J37/06; H01J3/00; H01J37/06
Attorney, Agent or Firm:
SAEGUSA, Eiji et al. (Kitahama TNK Building, 1-7-1 Doshomachi, Chuo-ku, Osaka-sh, Osaka 45, 5410045, JP)
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