Ion source

摘要

According to one embodiments, an ion source connected with a vacuum-exhausted downstream apparatus is provided. The ion source includes a vacuum chamber which is vacuum-exhausted, a target which is set in the vacuum chamber and generates ions by irradiation of a laser beam, a transportation unit which transports the ions generated by the target to the downstream apparatus, and a vacuum sealing unit which seals the transportation unit so as to separate vacuum-conditions of the vacuum chamber side and the downstream apparatus side before exchanging the target set in the vacuum chamber.

主权项

1. An ion source connected through an insulation duct with a downstream-located linear accelerator which is located downstream of the ion source apparatus and which is vacuum exhausted, the ion source comprising:
a vacuum chamber which is vacuum-exhausted; a target which is set in the vacuum chamber and which generates plasmas containing multi-charged ions by irradiation of a laser beam; a transportation unit which transports the multi-charged ions contained in the plasmas generated by the target to the downstream-located linear accelerator via a transportation pipe, the insulation duct, an intermediate electrode, and an acceleration electrode; and a vacuum sealing unit which is located between the target and the insulation duct, and is located upstream of the intermediate electrode and the acceleration electrode, and is located upstream of the insulation duct, intermediate electrode, and acceleration electrode so as to separate vacuum-conditions of the vacuum chamber side and the downstream-located linear accelerator side, and is located at a position where the multi-charged ions contained in the plasmas in the vacuum chamber are transportable, and which seals one of ends of the transportation pipe before exchanging the target set in the vacuum chamber.