Status report on a dc 130 mA, 75 keV proton injector (invited)
| Autor: | Joseph D. Sherman, Lash Hansborough, Michael E. Thuot, R.R. Stevens, J. David Schneider, Andrew Arvin, H. Vernon Smith, R. Ferdinand, David Hodgkins, M. Stettler, Thomas Zaugg, E. A. Meyer |
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| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 69:1003-1008 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1148706 |
| Popis: | 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 600–800 W of 2.45 GHz discharge power. Typical proton fraction is 85%–90% of the total extracted ion current, and the rms normalized beam emittance after transport through a prototype 2.1 m LEBT is 0.20 (πmm mrad). Beam space-charge neutralization is measured to be >98% 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. |
| Databáze: | OpenAIRE |
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