论文信息 - Application of bulk high-TC superconductors to electron beam ion sources: present status and outlook

Application of bulk high-TC superconductors to electron beam ion sources: present status and outlook

We have developed an electron beam ion source (EBIS) assembling three rings made of high-TC superconductor as a solenoid, which enables us to construct a `table-top' EBIS operated at the liquid N2 temperature with a strong magnetic field. Optimizing a pulse field magnetization procedure, the assembly yielded a magnetic field as high as 0.8 T under a persistent mode, which stably lasted more than two days. An electron beam of 12 keV–50 mA was successfully compressed and guided by the magnetic field along the axis of the drift tube and `soft-landed' on an electron collector with a collection efficiency of more than 99%. As a result, highly charged ions such as Ar17+ and Xe42+ have been produced and extracted.

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