Status report on a dc 130 mA, 75 keV proton injector (invited)
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- CEA-Saclay, LNS, 91191 Gif-sur-Yvette Cedex (France)
A 110 mA, 75 keV dc proton injector is being developed at Los Alamos. A microwave proton source is coupled to a two solenoid, space-charge neutralized, low-energy beam transport (LEBT) system. The ion source produces 110 mA proton current at 75 keV using 600{endash}800 W of 2.45 GHz discharge power. Typical proton fraction is 85{percent}{endash}90{percent} of the total extracted ion current, and the rms normalized beam emittance after transport through a prototype 2.1 m LEBT is 0.20 ({pi}mmmrad). Beam space-charge neutralization is measured to be {gt}98{percent} which enables the solenoid magnetic transport to successfully match the injector beam into a radio-frequency quadrupole. Beam simulations indicate small emittance growth in the proposed 2.8 m low-energy demonstration accelerator LEBT. The LEBT also contains beam diagnostics, steering, and a beam deflector for variable duty factor and accelerator fast protect functions. The injector beam availability status is also discussed. {copyright} {ital 1998 American Institute of Physics.}
- OSTI ID:
- 591924
- Report Number(s):
- CONF-980145-; ISSN 0034-6748; TRN: 98:004868
- Journal Information:
- Review of Scientific Instruments, Vol. 69, Issue 2; Conference: 7. international conference on ion sources, Shirahama (Japan), 26-27 Jan 1998; Other Information: PBD: Feb 1998
- Country of Publication:
- United States
- Language:
- English
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