Superconducting magnet device and cyclotron

    公开(公告)号:US12033795B2

    公开(公告)日:2024-07-09

    申请号:US17712918

    申请日:2022-04-04

    Inventor: Akito Higuchi

    CPC classification number: H01F6/04 H01F6/06 H05H7/04 H05H13/005

    Abstract: To provide a superconducting magnet device enabling improved access to internal equipment. A superconducting magnet device includes: a superconducting coil; and a hollow tubular cryostat having an outer peripheral wall and an inner peripheral wall connected to each other so as to define a vacuum region where the superconducting coil is disposed. The cryostat has a tubular partition wall connecting the outer peripheral wall and the inner peripheral wall and a cavity partitioned from the vacuum region by the tubular partition wall is formed inside the tubular partition wall. The outer peripheral wall has an opening portion wide in the circumferential direction of the cryostat, and the opening portion communicates with the cryostat hollow portion radially inside the inner peripheral wall through the cavity.

    ACCELERATOR AND PARTICLE BEAM IRRADIATION SYSTEM

    公开(公告)号:US20170303384A1

    公开(公告)日:2017-10-19

    申请号:US15513584

    申请日:2014-12-08

    Applicant: Hitachi, Ltd.

    Abstract: The accelerator includes a circular vacuum container which contains a circular return yoke. With respect to the central axis of the vacuum container, an incidence electrode is arranged towards the entrance of a beam emission path inside of the return yoke. Inside of the return yoke, electrodes are arranged radially from the incidence electrode in the periphery of the incidence electrode. Recesses are arranged alternately with the electrodes in the circumferential direction of the return yoke. In the vacuum container, an orbit-concentric region is formed in which multiple beam orbits centered on the incidence electrode are present, and, in the periphery of said region, an orbit-eccentric area is formed in which multiple beam orbits eccentric to the incidence electrode are present. In the orbit-eccentric region, the beam orbits between the incidence electrode and the entrance to the beam emission path are denser.

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