Proof of principle experiments of neutral helium beam production for alpha particle diagnostics was carried out on a test stand. Negative helium ions were produced in the Li charge exchange cell, in which stable and long time operation was possible. He- beam was accelerated to 157 keV. Finally, He 0 beam was successfully produced after the flight in the drift-tube through the auto-electron-detachment process from He- to He 0. A neutral beam detector using a pyroelectric device was also developed to measure He0 beam intensity. The metastable component in the neutral helium beam was found to be less than 2.
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