Title:
【発明の名称】線形加速器
Document Type and Number:
Japanese Patent JP2003506840
Kind Code:
A
Abstract:
A standing wave linear accelerator has a plurality of resonant cavities located along a particle beam axis. One or more pairs of resonant cavities are electromagnetically coupled via a coupling cavity. A rotationally asymmetric element within the coupling cavity is adapted to rotate about an axis that is substantially parallel to the axis of the coupling cavity. The coupling cavity is imperfectly symmetric about its axis due to a relative excess of material disposed within the cavity in the portion opposed to the apertures. Rotation of the polarization of a TE111 mode inside the cylindrical cavity provided a simple single mechanical control of coupling value, that has negligible effect on the phase shift across the device. A slight frequency dependence on the angle of rotation is correctable by a relative excess of material located opposite the apertures between the coupling cavity and the accelerating cavities.
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Inventors:
John, Allen
Leonard, Knowles, Brandle
Terry, arthur, large
Terence, Bates
Leonard, Knowles, Brandle
Terry, arthur, large
Terence, Bates
Application Number:
JP2001515662A
Publication Date:
February 18, 2003
Filing Date:
August 03, 2000
Export Citation:
Assignee:
ELEKTA AB
International Classes:
H05H7/18; H05H9/04; H05H9/00; (IPC1-7): H05H9/00; H05H9/04
Domestic Patent References:
| JPH01264200A | 1989-10-20 | |||
| JP3025920B | ||||
| JPS61253800A | 1986-11-11 | |||
| JPS5410196A | 1979-01-25 | |||
| JPH01264200A | 1989-10-20 | |||
| JPH0325920B2 | 1991-04-09 | |||
| JPS61253800A | 1986-11-11 | |||
| JPS5410196U | 1979-01-23 |
Attorney, Agent or Firm:
Kenji Yoshitake (6 others)