Intense ion‐beam‐transport experiments using a z ‐discharge plasma channel
1993; American Institute of Physics; Volume: 5; Issue: 1 Linguagem: Inglês
10.1063/1.860851
ISSN2163-503X
AutoresJ. M. Neri, P. F. Ottinger, D. V. Rose, P.J. Goodrich, D. D. Hinshelwood, D. Mosher, S. J. Stephanakis, F.C. Young,
Tópico(s)Pulsed Power Technology Applications
ResumoA z-discharge plasma channel is used to confine and transport an intense proton beam. A pinch-reflex ion diode on the NRL Gamble II accelerator focuses a proton beam onto the entrance aperture of a 2.5 cm diam, 1.2 m long z-discharge transport system. The beam ions are charge and current neutralized in the discharge plasma, and execute betatronlike orbits in the magnetic field of the discharge. Ion beam diagnostics include shadowbox imaging and prompt-γ radiation measurements from LiF targets. Under appropriate conditions, 95% particle transport and 90% energy transport are observed, with the only energy loss attributed to classical stopping in the channel gas. The transverse phase-space distribution of the beam measured by the shadowbox is consistent with full charge and current neutralization of the transported beam.
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