| 摘要 |
<p>An accelerator includes an inflector (21) through which a beam (B) entering from an ion source passes and which introduces the beam (B) to an acceleration orbit (T). The inflector (21) includes a beam convergence unit that converges the beam (B) passing through the inflector (21). A cyclotron, which accelerates a beam (B) in a convoluted acceleration orbit (T), includes magnetic poles, D-electrodes (9), and an inflector (21). The magnetic poles generate a magnetic field in a direction perpendicular to the acceleration orbit (T). The D-electrodes (9) generate a potential difference, which accelerates the beam (B), in the acceleration orbit (T). A beam (B), which enters in an incident direction perpendicular to the acceleration orbit (T), passes through the inflector (21), and the inflector (21) bends the beam (B) so as to introduce the beam (B) to the acceleration orbit (T). The inflector (21) includes a beam convergence unit that converges the beam (B) passing through the inflector (21) .</p> |
