Abstract
We have been developing an electron beam ion source equipped with an assembly of bulk high-Tc superconductors (YBCO) as a solenoid, which fulfil the following practical requirements: high magnetic field, compact, operation at liquid nitrogen temperature. The energy and current of the electron beam are designed to be 30 keV and 100 mA at the maximum, which are sufficient to produce highly charged ions such as Ne-like U82+. Recently, we have succeeded in producing a stable solenoidal field of 0.8 T, and in injecting an electron beam of 10 keV – 40 mA keeping beam collection efficiency of ∼99% at the electron collector. The details of the design and the results of extraction tests are presented.
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More From: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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