Title:
PARTICLE BEAM ACCELERATOR AND PARTICLE BEAM THERAPY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/264475
Kind Code:
A1
Abstract:
A dynamic magnetic field application device 52 applies a magnetic field, at a predetermined timing, to a predetermined region through which an ion beam of desired energy circling within an acceleration space passes to displace the circling orbit of the ion beam of the desired energy. An emission channel 1019 is disposed in an outer peripheral portion of a magnetic pole 9. A position O1 at which an ion introduction device introduces ions into the acceleration space is located closer to the emission channel 1019 than a center O2 of the magnetic pole. The region to which the dynamic field application device 52 applies the magnetic field is a region closer to an opening 1019a of the emission channel 1019 than the position O1 at which the ions are introduced, and the magnetic field to be applied is a magnetic field in a direction in which a main magnetic field is strengthened. Consequently, a variable beam energy accelerator capable of improving the beam's time responsivity regarding emission control and achieving higher-accuracy emission control is provided.
Inventors:
HORI CHISHIN (JP)
AOKI TAKAMICHI (JP)
HAE TAKAMITSU (JP)
AOKI TAKAMICHI (JP)
HAE TAKAMITSU (JP)
Application Number:
PCT/JP2022/002575
Publication Date:
December 22, 2022
Filing Date:
January 25, 2022
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H05H7/04; A61N5/10; H05H7/10; H05H13/00
Foreign References:
| JP2020035728A | 2020-03-05 | |||
| US20140028220A1 | 2014-01-30 |
Other References:
STORRN D W, COHEN R C, DUGAN G, SACHS A M, RAINWATER J, AU Y, HAWRYLAK R A, SHILL J, TINTA F G: "Nevis Synchrocyclotron Beam Status Report", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, vol. 22, no. 3, 1 June 1975 (1975-06-01), pages 1408 - 1410, XP093014971, DOI: 10.1109/TNS.1975.4327896
ANONYMOUS: "Novel Variable-energy Accelerator fot Particle Beam Therapy", HITACHI REVIEW, vol. 69, no. 3, 1 March 2020 (2020-03-01), pages 133, XP009541920
ANONYMOUS: "Novel Variable-energy Accelerator fot Particle Beam Therapy", HITACHI REVIEW, vol. 69, no. 3, 1 March 2020 (2020-03-01), pages 133, XP009541920
Attorney, Agent or Firm:
KAICHI IP (JP)
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