US 12,114,415 B2
Circular accelerator
Takamichi Aoki, Tokyo (JP)
Assigned to HITACHI HIGH-TECH CORPORATION, Tokyo (JP)
Filed by Hitachi High-Tech Corporation, Tokyo (JP)
Filed on Aug. 22, 2022, as Appl. No. 17/892,311.
Application 17/892,311 is a division of application No. 16/341,072, granted, now 11,457,523, previously published as PCT/JP2017/011906, filed on Mar. 24, 2017.
Prior Publication US 2022/0408541 A1, Dec. 22, 2022
Int. Cl. H05H 7/04 (2006.01); A61N 5/10 (2006.01); H01F 7/20 (2006.01); H05H 7/08 (2006.01); H05H 13/00 (2006.01); H05H 13/02 (2006.01); H05H 15/00 (2006.01)
CPC H05H 7/04 (2013.01) [A61N 5/103 (2013.01); A61N 5/1077 (2013.01); H01F 7/202 (2013.01); H05H 7/08 (2013.01); H05H 13/005 (2013.01); H05H 13/02 (2013.01); H05H 15/00 (2013.01); A61N 2005/1087 (2013.01); A61N 2005/1097 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An accelerator, comprising:
a pair of magnets forming a magnetic field therebetween;
an ion source which injects ions between the pair of magnets;
an acceleration electrode which accelerates the ions; and
a beam extraction path which extracts the ions to an outside, wherein
a plurality of ring-shaped beam closed orbits formed by the pair of magnets, in which ions of different energies respectively circulate, are aggregated on one side; and
the magnetic field formed by the pair of magnets is uniform along the plurality of ring-shaped beam closed orbits and decreases as energy increases.