Title:
ROTARY CAPACITOR, CIRCULAR ACCELERATOR, AND PARTICLE BEAM THERAPY SYSTEM
Document Type and Number:
Japanese Patent JP2023039803
Kind Code:
A
Abstract:
To improve workability of maintenance of a bearing of a rotary capacitor used for a circular accelerator.SOLUTION: A rotary capacitor 22 is used for a circular accelerator 39 for accelerating a charged particle beam by applying a first high frequency wave to a direct current main magnetic field and modulates a frequency of the first high frequency wave. The rotary capacitor 22 includes: a stator electrode 32; and a rotor electrode 33 that is used for modulation of the frequency of the first high frequency wave together with the stator electrode 32. A vacuum seal 29 performs vacuum-sealing around a shaft 35 for rotating the rotor electrode 33. A bearing 30 for supporting the shaft 35 is installed on the atmosphere side.SELECTED DRAWING: Figure 6
Inventors:
HANEE TAKAMITSU
IKEDA MASAHIRO
IKEDA MASAHIRO
Application Number:
JP2021147099A
Publication Date:
March 22, 2023
Filing Date:
September 09, 2021
Export Citation:
Assignee:
HITACHI LTD
International Classes:
A61N5/10; H05H13/02; H01G5/01; H01G5/013; H01G5/06; H05H7/02
Attorney, Agent or Firm:
Patent Attorney Corporation YKI International Patent Office